From a9ee7a51329c8a6c6e205e91907c2a753bb62495 Mon Sep 17 00:00:00 2001 From: Alex Smith Date: Fri, 3 Aug 2012 15:42:30 +0100 Subject: [PATCH] Added new BIOS module for calling BIOS interrupts. This module provides an interface for drivers to use to perform calls to the BIOS (only really for use by graphics drivers which need to use the VESA BIOS). It uses the x86emu library from X.org which emulates a real mode x86 CPU. This is necessary for x86_64 as virtual 8086 mode no longer exists there. --- build/jam/Haiku64Image | 2 +- build/jam/HaikuImage | 4 +- headers/os/drivers/bios.h | 73 + src/add-ons/kernel/generic/Jamfile | 1 + src/add-ons/kernel/generic/bios/Jamfile | 17 + src/add-ons/kernel/generic/bios/bios.cpp | 368 + .../kernel/generic/bios/x86emu/debug.c | 496 + .../kernel/generic/bios/x86emu/decode.c | 1092 ++ src/add-ons/kernel/generic/bios/x86emu/fpu.c | 976 ++ src/add-ons/kernel/generic/bios/x86emu/ops.c | 12307 ++++++++++++++++ src/add-ons/kernel/generic/bios/x86emu/ops2.c | 3008 ++++ .../kernel/generic/bios/x86emu/prim_ops.c | 2859 ++++ src/add-ons/kernel/generic/bios/x86emu/sys.c | 550 + .../kernel/generic/bios/x86emu/validate.c | 769 + .../kernel/generic/bios/x86emu/x86emu.h | 197 + .../kernel/generic/bios/x86emu/x86emu/debug.h | 209 + .../generic/bios/x86emu/x86emu/decode.h | 87 + .../kernel/generic/bios/x86emu/x86emu/fpu.h | 60 + .../generic/bios/x86emu/x86emu/fpu_regs.h | 119 + .../kernel/generic/bios/x86emu/x86emu/ops.h | 45 + .../generic/bios/x86emu/x86emu/prim_asm.h | 1053 ++ .../generic/bios/x86emu/x86emu/prim_ops.h | 141 + .../generic/bios/x86emu/x86emu/prim_x86_gcc.h | 77 + .../kernel/generic/bios/x86emu/x86emu/regs.h | 342 + .../kernel/generic/bios/x86emu/x86emu/types.h | 80 + .../generic/bios/x86emu/x86emu/x86emui.h | 100 + 26 files changed, 25029 insertions(+), 3 deletions(-) create mode 100644 headers/os/drivers/bios.h create mode 100644 src/add-ons/kernel/generic/bios/Jamfile create mode 100644 src/add-ons/kernel/generic/bios/bios.cpp create mode 100644 src/add-ons/kernel/generic/bios/x86emu/debug.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/decode.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/fpu.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/ops.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/ops2.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/prim_ops.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/sys.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/validate.c create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/debug.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/decode.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu_regs.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/ops.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_asm.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_ops.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_x86_gcc.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/regs.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/types.h create mode 100644 src/add-ons/kernel/generic/bios/x86emu/x86emu/x86emui.h diff --git a/build/jam/Haiku64Image b/build/jam/Haiku64Image index ba5c32f4bc..c841c2322d 100644 --- a/build/jam/Haiku64Image +++ b/build/jam/Haiku64Image @@ -65,7 +65,7 @@ AddFilesToHaikuImage system add-ons kernel debugger AddFilesToHaikuImage system add-ons kernel file_systems : $(SYSTEM_ADD_ONS_FILE_SYSTEMS) ; AddFilesToHaikuImage system add-ons kernel generic - : $(ATA_ONLY)ata_adapter dpc locked_pool scsi_periph tty ; + : $(ATA_ONLY)ata_adapter bios dpc locked_pool scsi_periph tty ; AddFilesToHaikuImage system add-ons kernel partitioning_systems : intel session ; diff --git a/build/jam/HaikuImage b/build/jam/HaikuImage index 61adf50d76..29b914cafe 100644 --- a/build/jam/HaikuImage +++ b/build/jam/HaikuImage @@ -244,8 +244,8 @@ AddFilesToHaikuImage system add-ons kernel debugger AddFilesToHaikuImage system add-ons kernel file_systems : $(SYSTEM_ADD_ONS_FILE_SYSTEMS) ; AddFilesToHaikuImage system add-ons kernel generic - : $(ATA_ONLY)ata_adapter dpc $(IDE_ONLY)ide_adapter locked_pool mpu401 - scsi_periph tty ; + : $(ATA_ONLY)ata_adapter $(X86_ONLY)bios dpc $(IDE_ONLY)ide_adapter + locked_pool mpu401 scsi_periph tty ; AddFilesToHaikuImage system add-ons kernel partitioning_systems : amiga_rdb apple efi_gpt intel session ; AddFilesToHaikuImage system add-ons kernel interrupt_controllers diff --git a/headers/os/drivers/bios.h b/headers/os/drivers/bios.h new file mode 100644 index 0000000000..c756649eb1 --- /dev/null +++ b/headers/os/drivers/bios.h @@ -0,0 +1,73 @@ +/* + * Copyright 2012, Haiku, Inc. All Rights Reserved. + * Distributed under the terms of the MIT License. + */ +#ifndef _BIOS_MODULE_H_ +#define _BIOS_MODULE_H_ + + +#include +#include + + +/*! BIOS call interface. + + This module provides a mechanism to call PC BIOS interrupts (e.g. to use + the VESA BIOS). + + Basic usage is as follows: + - Call bios_module_info::prepare(). This sets up memory mappings and + obtains exclusive access to the BIOS (only 1 thread is able to use the + BIOS at a time). + - Allocate memory for data that will be passed to BIOS interrupts using + bios_module_info::allocate_mem(). This returns a virtual address, to + get the physical address to pass to the BIOS use + bios_module_info::physical_address(). + - Call the BIOS with bios_module_info::interrupt(). + - Get the virtual location of any physical addresses returned using + bios_module_info::virtual_address(). + - Release the BIOS and free created memory mappings with + bios_module_info::finish(). + +*/ + + +// Cookie for the BIOS module functions. +typedef struct BIOSState bios_state; + + +// Registers to pass to a BIOS interrupt. +struct bios_regs { + uint32 eax; + uint32 ebx; + uint32 ecx; + uint32 edx; + uint32 edi; + uint32 esi; + uint32 ebp; + uint32 eflags; + uint32 ds; + uint32 es; + uint32 fs; + uint32 gs; +}; + + +struct bios_module_info { + module_info info; + + status_t (*prepare)(bios_state** _state); + status_t (*interrupt)(bios_state* state, uint8 vector, bios_regs* regs); + void (*finish)(bios_state* state); + + // Memory management methods. + void* (*allocate_mem)(bios_state* state, size_t size); + uint32 (*physical_address)(bios_state* state, void* virtualAddress); + void* (*virtual_address)(bios_state* state, uint32 physicalAddress); +}; + + +#define B_BIOS_MODULE_NAME "generic/bios/v1" + + +#endif // _BIOS_MODULE_H_ diff --git a/src/add-ons/kernel/generic/Jamfile b/src/add-ons/kernel/generic/Jamfile index a2a6bfc1fa..1ac20bafc0 100644 --- a/src/add-ons/kernel/generic/Jamfile +++ b/src/add-ons/kernel/generic/Jamfile @@ -2,6 +2,7 @@ SubDir HAIKU_TOP src add-ons kernel generic ; SubInclude HAIKU_TOP src add-ons kernel generic ata_adapter ; SubInclude HAIKU_TOP src add-ons kernel generic atomizer ; +SubInclude HAIKU_TOP src add-ons kernel generic bios ; SubInclude HAIKU_TOP src add-ons kernel generic dpc ; SubInclude HAIKU_TOP src add-ons kernel generic ide_adapter ; SubInclude HAIKU_TOP src add-ons kernel generic locked_pool ; diff --git a/src/add-ons/kernel/generic/bios/Jamfile b/src/add-ons/kernel/generic/bios/Jamfile new file mode 100644 index 0000000000..faa5ec4370 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/Jamfile @@ -0,0 +1,17 @@ +SubDir HAIKU_TOP src add-ons kernel generic bios ; + +UsePrivateKernelHeaders ; + +SEARCH_SOURCE += [ FDirName $(SUBDIR) x86emu ] ; + +KernelAddon bios : + decode.c + fpu.c + ops.c + ops2.c + prim_ops.c + sys.c + + bios.cpp +; + diff --git a/src/add-ons/kernel/generic/bios/bios.cpp b/src/add-ons/kernel/generic/bios/bios.cpp new file mode 100644 index 0000000000..8ae2745852 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/bios.cpp @@ -0,0 +1,368 @@ +/* + * Copyright 2012, Alex Smith, alex@alex-smith.me.uk. + * Distributed under the terms of the MIT License. + */ + + +#include + +#include + +#include + +#include +#include +#include + +#include "x86emu.h" + + +struct BIOSState { + BIOSState() + : + mapped_address(0), + bios_area(-1), + ram_area(-1), + allocated_size(0) + { + } + + ~BIOSState() + { + if (bios_area >= 0) + delete_area(bios_area); + if (ram_area >= 0) + delete_area(ram_area); + } + + addr_t mapped_address; + area_id bios_area; + area_id ram_area; + size_t allocated_size; +}; + + +// BIOS memory layout definitions. +static const uint32 kBDABase = 0; +static const uint32 kBDASize = 0x1000; +static const uint32 kEBDABase = 0x90000; +static const uint32 kEBDASize = 0x70000; +static const uint32 kRAMBase = 0x1000; +static const uint32 kRAMSize = 0x8f000; +static const uint32 kStackSize = 0x1000; +static const uint32 kTotalSize = 0x100000; + + +static sem_id sBIOSLock; +static BIOSState* sCurrentBIOSState; + + +// #pragma mark - X86EMU hooks. + + +static x86emuu8 +x86emu_pio_inb(X86EMU_pioAddr port) +{ + return in8(port); +} + + +static x86emuu16 +x86emu_pio_inw(X86EMU_pioAddr port) +{ + return in16(port); +} + + +static x86emuu32 +x86emu_pio_inl(X86EMU_pioAddr port) +{ + return in32(port); +} + + +static void +x86emu_pio_outb(X86EMU_pioAddr port, x86emuu8 data) +{ + out8(data, port); +} + + +static void +x86emu_pio_outw(X86EMU_pioAddr port, x86emuu16 data) +{ + out16(data, port); +} + + +static void +x86emu_pio_outl(X86EMU_pioAddr port, x86emuu32 data) +{ + out32(data, port); +} + + +static X86EMU_pioFuncs x86emu_pio_funcs = { + x86emu_pio_inb, + x86emu_pio_inw, + x86emu_pio_inl, + x86emu_pio_outb, + x86emu_pio_outw, + x86emu_pio_outl, +}; + + +static x86emuu8 +x86emu_mem_rdb(x86emuu32 addr) +{ + return *(x86emuu8*)((addr_t)addr + sCurrentBIOSState->mapped_address); +} + + +static x86emuu16 +x86emu_mem_rdw(x86emuu32 addr) +{ + return *(x86emuu16*)((addr_t)addr + sCurrentBIOSState->mapped_address); +} + + +static x86emuu32 +x86emu_mem_rdl(x86emuu32 addr) +{ + return *(x86emuu32*)((addr_t)addr + sCurrentBIOSState->mapped_address); +} + + +static void +x86emu_mem_wrb(x86emuu32 addr, x86emuu8 val) +{ + *(x86emuu8*)((addr_t)addr + sCurrentBIOSState->mapped_address) = val; +} + + +static void +x86emu_mem_wrw(x86emuu32 addr, x86emuu16 val) +{ + *(x86emuu16*)((addr_t)addr + sCurrentBIOSState->mapped_address) = val; +} + + +static void +x86emu_mem_wrl(x86emuu32 addr, x86emuu32 val) +{ + *(x86emuu32*)((addr_t)addr + sCurrentBIOSState->mapped_address) = val; +} + + +static X86EMU_memFuncs x86emu_mem_funcs = { + x86emu_mem_rdb, + x86emu_mem_rdw, + x86emu_mem_rdl, + x86emu_mem_wrb, + x86emu_mem_wrw, + x86emu_mem_wrl, +}; + + +// #pragma mark - + + +static void* +bios_allocate_mem(bios_state* state, size_t size) +{ + // Simple allocator for memory to pass to the BIOS. No need for a complex + // allocator here, there is only a few allocations per BIOS usage. + + size = ROUNDUP(size, 4); + + if (state->allocated_size + size > kRAMSize) + return NULL; + + void* address + = (void*)(state->mapped_address + kRAMBase + state->allocated_size); + state->allocated_size += size; + + return address; +} + + +static uint32 +bios_physical_address(bios_state* state, void* virtualAddress) +{ + return (uint32)((addr_t)virtualAddress - state->mapped_address); +} + + +static void* +bios_virtual_address(bios_state* state, uint32 physicalAddress) +{ + return (void*)((addr_t)physicalAddress + state->mapped_address); +} + + +static status_t +bios_prepare(bios_state** _state) +{ + status_t status; + + BIOSState* state = new(std::nothrow) BIOSState; + if (state == NULL) + return B_NO_MEMORY; + ObjectDeleter stateDeleter(state); + + // Reserve a chunk of address space to map at. + status = vm_reserve_address_range(VMAddressSpace::KernelID(), + (void**)&state->mapped_address, B_ANY_KERNEL_ADDRESS, + kTotalSize, 0); + if (status != B_OK) + return status; + + // Map RAM for for the BIOS. + state->ram_area = create_area("bios ram", (void**)&state->mapped_address, + B_EXACT_ADDRESS, kBDASize + kRAMSize, B_NO_LOCK, B_KERNEL_READ_AREA + | B_KERNEL_WRITE_AREA); + if (state->ram_area < B_OK) { + vm_unreserve_address_range(VMAddressSpace::KernelID(), + (void*)state->mapped_address, kTotalSize); + return state->ram_area; + } + + // Copy the interrupt vectors and the BIOS data area. + status = vm_memcpy_from_physical((void*)state->mapped_address, kBDABase, + kBDASize, false); + if (status != B_OK) { + vm_unreserve_address_range(VMAddressSpace::KernelID(), + (void*)state->mapped_address, kTotalSize); + return status; + } + *((uint32 *)state->mapped_address) = 0xdeadbeef; + + // Map the extended BIOS data area and VGA memory. + void* address = (void*)(state->mapped_address + kEBDABase); + state->bios_area = map_physical_memory("bios", kEBDABase, kEBDASize, + B_EXACT_ADDRESS, B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA, &address); + if (state->bios_area < B_OK) { + vm_unreserve_address_range(VMAddressSpace::KernelID(), + (void*)state->mapped_address, kTotalSize); + return state->bios_area; + } + + // Attempt to acquire exclusive access to the BIOS. + acquire_sem(sBIOSLock); + + stateDeleter.Detach(); + *_state = state; + return B_OK; +} + + +static status_t +bios_interrupt(bios_state* state, uint8 vector, bios_regs* regs) +{ + sCurrentBIOSState = state; + + // Allocate a stack. + void* stack = bios_allocate_mem(state, kStackSize); + if (stack == NULL) + return B_NO_MEMORY; + uint32 stackTop = bios_physical_address(state, stack) + kStackSize; + + // X86EMU finishes when it encounters a HLT instruction, allocate a + // byte to store one in and set the return address of the interrupt to + // point to it. + void* halt = bios_allocate_mem(state, 1); + if (halt == NULL) + return B_NO_MEMORY; + *(uint8*)halt = 0xF4; + + // Copy in the registers. + memset(&M, 0, sizeof(M)); + M.x86.R_EAX = regs->eax; + M.x86.R_EBX = regs->ebx; + M.x86.R_ECX = regs->ecx; + M.x86.R_EDX = regs->edx; + M.x86.R_EDI = regs->edi; + M.x86.R_ESI = regs->esi; + M.x86.R_EBP = regs->ebp; + M.x86.R_EFLG = regs->eflags | X86_EFLAGS_INTERRUPT | X86_EFLAGS_RESERVED1; + M.x86.R_EIP = bios_physical_address(state, halt); + M.x86.R_CS = 0x0; + M.x86.R_DS = regs->ds; + M.x86.R_ES = regs->es; + M.x86.R_FS = regs->fs; + M.x86.R_GS = regs->gs; + M.x86.R_SS = stackTop >> 4; + M.x86.R_ESP = stackTop - (M.x86.R_SS << 4); + + /* Run the interrupt. */ + X86EMU_setupPioFuncs(&x86emu_pio_funcs); + X86EMU_setupMemFuncs(&x86emu_mem_funcs); + X86EMU_prepareForInt(vector); + X86EMU_exec(); + + // Copy back modified data. + regs->eax = M.x86.R_EAX; + regs->ebx = M.x86.R_EBX; + regs->ecx = M.x86.R_ECX; + regs->edx = M.x86.R_EDX; + regs->edi = M.x86.R_EDI; + regs->esi = M.x86.R_ESI; + regs->ebp = M.x86.R_EBP; + regs->eflags = M.x86.R_EFLG; + regs->ds = M.x86.R_DS; + regs->es = M.x86.R_ES; + regs->fs = M.x86.R_FS; + regs->gs = M.x86.R_GS; + + return B_OK; +} + + +static void +bios_finish(bios_state* state) +{ + release_sem(sBIOSLock); + + delete state; +} + + +static status_t +std_ops(int32 op, ...) +{ + switch (op) { + case B_MODULE_INIT: + sBIOSLock = create_sem(1, "bios lock"); + if (sBIOSLock < B_OK) + return sBIOSLock; + + return B_OK; + case B_MODULE_UNINIT: + delete_sem(sBIOSLock); + return B_OK; + default: + return B_ERROR; + } +} + + +static bios_module_info sBIOSModule = { + { + B_BIOS_MODULE_NAME, + 0, + std_ops + }, + + bios_prepare, + bios_interrupt, + bios_finish, + bios_allocate_mem, + bios_physical_address, + bios_virtual_address +}; + + +module_info *modules[] = { + (module_info*)&sBIOSModule, + NULL +}; diff --git a/src/add-ons/kernel/generic/bios/x86emu/debug.c b/src/add-ons/kernel/generic/bios/x86emu/debug.c new file mode 100644 index 0000000000..cee36f595d --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/debug.c @@ -0,0 +1,496 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to handle debugging of the +* emulator. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" +#include +#include +#ifndef NO_SYS_HEADERS +#include +#include +#endif + +/*----------------------------- Implementation ----------------------------*/ + +#ifdef DEBUG + +static void print_encoded_bytes(u16 s, u16 o); +static void print_decoded_instruction(void); +static int parse_line(char *s, int *ps, int *n); + +/* should look something like debug's output. */ +void +X86EMU_trace_regs(void) +{ + if (DEBUG_TRACE()) { + x86emu_dump_regs(); + } + if (DEBUG_DECODE() && !DEBUG_DECODE_NOPRINT()) { + printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); + } +} + +void +X86EMU_trace_xregs(void) +{ + if (DEBUG_TRACE()) { + x86emu_dump_xregs(); + } +} + +void +x86emu_just_disassemble(void) +{ + /* + * This routine called if the flag DEBUG_DISASSEMBLE is set kind + * of a hack! + */ + printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); +} + +static void +disassemble_forward(u16 seg, u16 off, int n) +{ + X86EMU_sysEnv tregs; + int i; + u8 op1; + + /* + * hack, hack, hack. What we do is use the exact machinery set up + * for execution, except that now there is an additional state + * flag associated with the "execution", and we are using a copy + * of the register struct. All the major opcodes, once fully + * decoded, have the following two steps: TRACE_REGS(r,m); + * SINGLE_STEP(r,m); which disappear if DEBUG is not defined to + * the preprocessor. The TRACE_REGS macro expands to: + * + * if (debug&DEBUG_DISASSEMBLE) + * {just_disassemble(); goto EndOfInstruction;} + * if (debug&DEBUG_TRACE) trace_regs(r,m); + * + * ...... and at the last line of the routine. + * + * EndOfInstruction: end_instr(); + * + * Up to the point where TRACE_REG is expanded, NO modifications + * are done to any register EXCEPT the IP register, for fetch and + * decoding purposes. + * + * This was done for an entirely different reason, but makes a + * nice way to get the system to help debug codes. + */ + tregs = M; + tregs.x86.R_IP = off; + tregs.x86.R_CS = seg; + + /* reset the decoding buffers */ + tregs.x86.enc_str_pos = 0; + tregs.x86.enc_pos = 0; + + /* turn on the "disassemble only, no execute" flag */ + tregs.x86.debug |= DEBUG_DISASSEMBLE_F; + + /* DUMP NEXT n instructions to screen in straight_line fashion */ + /* + * This looks like the regular instruction fetch stream, except + * that when this occurs, each fetched opcode, upon seeing the + * DEBUG_DISASSEMBLE flag set, exits immediately after decoding + * the instruction. XXX --- CHECK THAT MEM IS NOT AFFECTED!!! + * Note the use of a copy of the register structure... + */ + for (i = 0; i < n; i++) { + op1 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + (x86emu_optab[op1]) (op1); + } + /* end major hack mode. */ +} + +void +x86emu_check_ip_access(void) +{ + /* NULL as of now */ +} + +void +x86emu_check_sp_access(void) +{ +} + +void +x86emu_check_mem_access(u32 dummy) +{ + /* check bounds, etc */ +} + +void +x86emu_check_data_access(uint dummy1, uint dummy2) +{ + /* check bounds, etc */ +} + +void +x86emu_inc_decoded_inst_len(int x) +{ + M.x86.enc_pos += x; +} + +void +x86emu_decode_printf(const char *x) +{ + sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", x); + M.x86.enc_str_pos += strlen(x); +} + +void +x86emu_decode_printf2(const char *x, int y) +{ + char temp[100]; + + snprintf(temp, sizeof(temp), x, y); + sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", temp); + M.x86.enc_str_pos += strlen(temp); +} + +void +x86emu_end_instr(void) +{ + M.x86.enc_str_pos = 0; + M.x86.enc_pos = 0; +} + +static void +print_encoded_bytes(u16 s, u16 o) +{ + int i; + char buf1[64]; + + for (i = 0; i < M.x86.enc_pos; i++) { + sprintf(buf1 + 2 * i, "%02x", fetch_data_byte_abs(s, o + i)); + } + printk("%-20s", buf1); +} + +static void +print_decoded_instruction(void) +{ + printk("%s", M.x86.decoded_buf); +} + +void +x86emu_print_int_vect(u16 iv) +{ + u16 seg, off; + + if (iv > 256) + return; + seg = fetch_data_word_abs(0, iv * 4); + off = fetch_data_word_abs(0, iv * 4 + 2); + printk("%04x:%04x ", seg, off); +} + +void +X86EMU_dump_memory(u16 seg, u16 off, u32 amt) +{ + u32 start = off & 0xfffffff0; + u32 end = (off + 16) & 0xfffffff0; + u32 i; + u32 current; + + current = start; + while (end <= off + amt) { + printk("%04x:%04x ", seg, start); + for (i = start; i < off; i++) + printk(" "); + for (; i < end; i++) + printk("%02x ", fetch_data_byte_abs(seg, i)); + printk("\n"); + start = end; + end = start + 16; + } +} + +void +x86emu_single_step(void) +{ + return; + char s[1024]; + int ps[10]; + int ntok; + int cmd; + int done; + int segment; + int offset; + static int breakpoint; + static int noDecode = 1; + + //char *p; + + if (DEBUG_BREAK()) { + if (M.x86.saved_ip != breakpoint) { + return; + } + else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + M.x86.debug |= DEBUG_TRACE_F; + M.x86.debug &= ~DEBUG_BREAK_F; + print_decoded_instruction(); + X86EMU_trace_regs(); + } + } + done = 0; + offset = M.x86.saved_ip; + while (!done) { + printk("-"); + //p = fgets(s, 1023, stdin); + cmd = parse_line(s, ps, &ntok); + switch (cmd) { + case 'u': + disassemble_forward(M.x86.saved_cs, (u16) offset, 10); + break; + case 'd': + if (ntok == 2) { + segment = M.x86.saved_cs; + offset = ps[1]; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } + else if (ntok == 3) { + segment = ps[1]; + offset = ps[2]; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } + else { + segment = M.x86.saved_cs; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } + break; + case 'c': + M.x86.debug ^= DEBUG_TRACECALL_F; + break; + case 's': + M.x86.debug ^= DEBUG_SVC_F | DEBUG_SYS_F | DEBUG_SYSINT_F; + break; + case 'r': + X86EMU_trace_regs(); + break; + case 'x': + X86EMU_trace_xregs(); + break; + case 'g': + if (ntok == 2) { + breakpoint = ps[1]; + if (noDecode) { + M.x86.debug |= DEBUG_DECODE_NOPRINT_F; + } + else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + } + M.x86.debug &= ~DEBUG_TRACE_F; + M.x86.debug |= DEBUG_BREAK_F; + done = 1; + } + break; + case 'q': + M.x86.debug |= DEBUG_EXIT; + return; + case 'P': + noDecode = (noDecode) ? 0 : 1; + printk("Toggled decoding to %s\n", (noDecode) ? "FALSE" : "TRUE"); + break; + case 't': + case 0: + done = 1; + break; + } + } +} + +int +X86EMU_trace_on(void) +{ + return M.x86.debug |= DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F; +} + +int +X86EMU_trace_off(void) +{ + return M.x86.debug &= ~(DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F); +} + +static int +parse_line(char *s, int *ps, int *n) +{ + int cmd; + + *n = 0; + while (*s == ' ' || *s == '\t') + s++; + ps[*n] = *s; + switch (*s) { + case '\n': + *n += 1; + return 0; + default: + cmd = *s; + *n += 1; + } + + while (1) { + while (*s != ' ' && *s != '\t' && *s != '\n') + s++; + + if (*s == '\n') + return cmd; + + while (*s == ' ' || *s == '\t') + s++; + + //sscanf(s, "%x", &ps[*n]); + *n += 1; + } +} + +#endif /* DEBUG */ + +void +x86emu_dump_regs(void) +{ + printk("\tAX=%04x ", M.x86.R_AX); + printk("BX=%04x ", M.x86.R_BX); + printk("CX=%04x ", M.x86.R_CX); + printk("DX=%04x ", M.x86.R_DX); + printk("SP=%04x ", M.x86.R_SP); + printk("BP=%04x ", M.x86.R_BP); + printk("SI=%04x ", M.x86.R_SI); + printk("DI=%04x\n", M.x86.R_DI); + printk("\tDS=%04x ", M.x86.R_DS); + printk("ES=%04x ", M.x86.R_ES); + printk("SS=%04x ", M.x86.R_SS); + printk("CS=%04x ", M.x86.R_CS); + printk("IP=%04x ", M.x86.R_IP); + if (ACCESS_FLAG(F_OF)) + printk("OV "); /* CHECKED... */ + else + printk("NV "); + if (ACCESS_FLAG(F_DF)) + printk("DN "); + else + printk("UP "); + if (ACCESS_FLAG(F_IF)) + printk("EI "); + else + printk("DI "); + if (ACCESS_FLAG(F_SF)) + printk("NG "); + else + printk("PL "); + if (ACCESS_FLAG(F_ZF)) + printk("ZR "); + else + printk("NZ "); + if (ACCESS_FLAG(F_AF)) + printk("AC "); + else + printk("NA "); + if (ACCESS_FLAG(F_PF)) + printk("PE "); + else + printk("PO "); + if (ACCESS_FLAG(F_CF)) + printk("CY "); + else + printk("NC "); + printk("\n"); +} + +void +x86emu_dump_xregs(void) +{ + printk("\tEAX=%08x ", M.x86.R_EAX); + printk("EBX=%08x ", M.x86.R_EBX); + printk("ECX=%08x ", M.x86.R_ECX); + printk("EDX=%08x \n", M.x86.R_EDX); + printk("\tESP=%08x ", M.x86.R_ESP); + printk("EBP=%08x ", M.x86.R_EBP); + printk("ESI=%08x ", M.x86.R_ESI); + printk("EDI=%08x\n", M.x86.R_EDI); + printk("\tDS=%04x ", M.x86.R_DS); + printk("ES=%04x ", M.x86.R_ES); + printk("SS=%04x ", M.x86.R_SS); + printk("CS=%04x ", M.x86.R_CS); + printk("EIP=%08x\n\t", M.x86.R_EIP); + if (ACCESS_FLAG(F_OF)) + printk("OV "); /* CHECKED... */ + else + printk("NV "); + if (ACCESS_FLAG(F_DF)) + printk("DN "); + else + printk("UP "); + if (ACCESS_FLAG(F_IF)) + printk("EI "); + else + printk("DI "); + if (ACCESS_FLAG(F_SF)) + printk("NG "); + else + printk("PL "); + if (ACCESS_FLAG(F_ZF)) + printk("ZR "); + else + printk("NZ "); + if (ACCESS_FLAG(F_AF)) + printk("AC "); + else + printk("NA "); + if (ACCESS_FLAG(F_PF)) + printk("PE "); + else + printk("PO "); + if (ACCESS_FLAG(F_CF)) + printk("CY "); + else + printk("NC "); + printk("\n"); +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/decode.c b/src/add-ons/kernel/generic/bios/x86emu/decode.c new file mode 100644 index 0000000000..12f8fb84b3 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/decode.c @@ -0,0 +1,1092 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* instruction decoding and accessess of immediate data via IP. etc. +* +****************************************************************************/ + +#include +#include "x86emu/x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +REMARKS: +Handles any pending asychronous interrupts. +****************************************************************************/ +static void +x86emu_intr_handle(void) +{ + u8 intno; + + if (M.x86.intr & INTR_SYNCH) { + intno = M.x86.intno; + if (_X86EMU_intrTab[intno]) { + (*_X86EMU_intrTab[intno]) (intno); + } + else { + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intno * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intno * 4); + M.x86.intr = 0; + } + } +} + +/**************************************************************************** +PARAMETERS: +intrnum - Interrupt number to raise + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. +****************************************************************************/ +void +x86emu_intr_raise(u8 intrnum) +{ + M.x86.intno = intrnum; + M.x86.intr |= INTR_SYNCH; +} + +/**************************************************************************** +REMARKS: +Main execution loop for the emulator. We return from here when the system +halts, which is normally caused by a stack fault when we return from the +original real mode call. +****************************************************************************/ +void +X86EMU_exec(void) +{ + u8 op1; + + M.x86.intr = 0; + DB(x86emu_end_instr(); + ) + + for (;;) { + DB(if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + /* If debugging, save the IP and CS values. */ + SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP); + INC_DECODED_INST_LEN(1); + if (M.x86.intr) { + if (M.x86.intr & INTR_HALTED) { + DB(if (M.x86.R_SP != 0) { + printk("halted\n"); X86EMU_trace_regs();} + else { + if (M.x86.debug) + printk("Service completed successfully\n");} + ) + return; + } + if (((M.x86.intr & INTR_SYNCH) && + (M.x86.intno == 0 || M.x86.intno == 2)) || + !ACCESS_FLAG(F_IF)) { + x86emu_intr_handle(); + } + } + op1 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + (*x86emu_optab[op1]) (op1); + if (M.x86.debug & DEBUG_EXIT) { + M.x86.debug &= ~DEBUG_EXIT; + return; + } + } +} + +/**************************************************************************** +REMARKS: +Halts the system by setting the halted system flag. +****************************************************************************/ +void +X86EMU_halt_sys(void) +{ + M.x86.intr |= INTR_HALTED; +} + +/**************************************************************************** +PARAMETERS: +mod - Mod value from decoded byte +regh - Reg h value from decoded byte +regl - Reg l value from decoded byte + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +void +fetch_decode_modrm(int *mod, int *regh, int *regl) +{ + int fetched; + + DB(if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + *mod = (fetched >> 6) & 0x03; + *regh = (fetched >> 3) & 0x07; + *regl = (fetched >> 0) & 0x07; +} + +/**************************************************************************** +RETURNS: +Immediate byte value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +u8 +fetch_byte_imm(void) +{ + u8 fetched; + + DB(if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate word value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u16 +fetch_word_imm(void) +{ + u16 fetched; + + DB(if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdw) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 2; + INC_DECODED_INST_LEN(2); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate lone value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u32 +fetch_long_imm(void) +{ + u32 fetched; + + DB(if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdl) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 4; + INC_DECODED_INST_LEN(4); + return fetched; +} + +/**************************************************************************** +RETURNS: +Value of the default data segment + +REMARKS: +Inline function that returns the default data segment for the current +instruction. + +On the x86 processor, the default segment is not always DS if there is +no segment override. Address modes such as -3[BP] or 10[BP+SI] all refer to +addresses relative to SS (ie: on the stack). So, at the minimum, all +decodings of addressing modes would have to set/clear a bit describing +whether the access is relative to DS or SS. That is the function of the +cpu-state-varible M.x86.mode. There are several potential states: + + repe prefix seen (handled elsewhere) + repne prefix seen (ditto) + + cs segment override + ds segment override + es segment override + fs segment override + gs segment override + ss segment override + + ds/ss select (in absense of override) + +Each of the above 7 items are handled with a bit in the mode field. +****************************************************************************/ +_INLINE u32 +get_data_segment(void) +{ +#define GET_SEGMENT(segment) + switch (M.x86.mode & SYSMODE_SEGMASK) { + case 0: /* default case: use ds register */ + case SYSMODE_SEGOVR_DS: + case SYSMODE_SEGOVR_DS | SYSMODE_SEG_DS_SS: + return M.x86.R_DS; + case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */ + return M.x86.R_SS; + case SYSMODE_SEGOVR_CS: + case SYSMODE_SEGOVR_CS | SYSMODE_SEG_DS_SS: + return M.x86.R_CS; + case SYSMODE_SEGOVR_ES: + case SYSMODE_SEGOVR_ES | SYSMODE_SEG_DS_SS: + return M.x86.R_ES; + case SYSMODE_SEGOVR_FS: + case SYSMODE_SEGOVR_FS | SYSMODE_SEG_DS_SS: + return M.x86.R_FS; + case SYSMODE_SEGOVR_GS: + case SYSMODE_SEGOVR_GS | SYSMODE_SEG_DS_SS: + return M.x86.R_GS; + case SYSMODE_SEGOVR_SS: + case SYSMODE_SEGOVR_SS | SYSMODE_SEG_DS_SS: + return M.x86.R_SS; + default: +#ifdef DEBUG + printk("error: should not happen: multiple overrides.\n"); +#endif + HALT_SYS(); + return 0; + } +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 +fetch_data_byte(uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + return (*sys_rdb) ((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 +fetch_data_word(uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + return (*sys_rdw) ((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 +fetch_data_long(uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + return (*sys_rdl) ((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 +fetch_data_byte_abs(uint segment, uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdb) (((u32) segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 +fetch_data_word_abs(uint segment, uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdw) (((u32) segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 +fetch_data_long_abs(uint segment, uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdl) (((u32) segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_byte(uint offset, u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + (*sys_wrb) ((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_word(uint offset, u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + (*sys_wrw) ((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_long(uint offset, u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16) get_data_segment(), offset); +#endif + (*sys_wrl) ((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a byte value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_byte_abs(uint segment, uint offset, u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrb) (((u32) segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_word_abs(uint segment, uint offset, u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrw) (((u32) segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void +store_data_long_abs(uint segment, uint offset, u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrl) (((u32) segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for byte operands. Also enables the decoding of instructions. +****************************************************************************/ +u8 * +decode_rm_byte_register(int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AL"); + return &M.x86.R_AL; + case 1: + DECODE_PRINTF("CL"); + return &M.x86.R_CL; + case 2: + DECODE_PRINTF("DL"); + return &M.x86.R_DL; + case 3: + DECODE_PRINTF("BL"); + return &M.x86.R_BL; + case 4: + DECODE_PRINTF("AH"); + return &M.x86.R_AH; + case 5: + DECODE_PRINTF("CH"); + return &M.x86.R_CH; + case 6: + DECODE_PRINTF("DH"); + return &M.x86.R_DH; + case 7: + DECODE_PRINTF("BH"); + return &M.x86.R_BH; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands. Also enables the decoding of instructions. +****************************************************************************/ +u16 * +decode_rm_word_register(int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AX"); + return &M.x86.R_AX; + case 1: + DECODE_PRINTF("CX"); + return &M.x86.R_CX; + case 2: + DECODE_PRINTF("DX"); + return &M.x86.R_DX; + case 3: + DECODE_PRINTF("BX"); + return &M.x86.R_BX; + case 4: + DECODE_PRINTF("SP"); + return &M.x86.R_SP; + case 5: + DECODE_PRINTF("BP"); + return &M.x86.R_BP; + case 6: + DECODE_PRINTF("SI"); + return &M.x86.R_SI; + case 7: + DECODE_PRINTF("DI"); + return &M.x86.R_DI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for dword operands. Also enables the decoding of instructions. +****************************************************************************/ +u32 * +decode_rm_long_register(int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("EAX"); + return &M.x86.R_EAX; + case 1: + DECODE_PRINTF("ECX"); + return &M.x86.R_ECX; + case 2: + DECODE_PRINTF("EDX"); + return &M.x86.R_EDX; + case 3: + DECODE_PRINTF("EBX"); + return &M.x86.R_EBX; + case 4: + DECODE_PRINTF("ESP"); + return &M.x86.R_ESP; + case 5: + DECODE_PRINTF("EBP"); + return &M.x86.R_EBP; + case 6: + DECODE_PRINTF("ESI"); + return &M.x86.R_ESI; + case 7: + DECODE_PRINTF("EDI"); + return &M.x86.R_EDI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands, modified from above for the weirdo +special case of segreg operands. Also enables the decoding of instructions. +****************************************************************************/ +u16 * +decode_rm_seg_register(int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("ES"); + return &M.x86.R_ES; + case 1: + DECODE_PRINTF("CS"); + return &M.x86.R_CS; + case 2: + DECODE_PRINTF("SS"); + return &M.x86.R_SS; + case 3: + DECODE_PRINTF("DS"); + return &M.x86.R_DS; + case 4: + DECODE_PRINTF("FS"); + return &M.x86.R_FS; + case 5: + DECODE_PRINTF("GS"); + return &M.x86.R_GS; + case 6: + case 7: + DECODE_PRINTF("ILLEGAL SEGREG"); + break; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/* + * + * return offset from the SIB Byte + */ +u32 +decode_sib_address(int sib, int mod) +{ + u32 base = 0, i = 0, scale = 1; + + switch (sib & 0x07) { + case 0: + DECODE_PRINTF("[EAX]"); + base = M.x86.R_EAX; + break; + case 1: + DECODE_PRINTF("[ECX]"); + base = M.x86.R_ECX; + break; + case 2: + DECODE_PRINTF("[EDX]"); + base = M.x86.R_EDX; + break; + case 3: + DECODE_PRINTF("[EBX]"); + base = M.x86.R_EBX; + break; + case 4: + DECODE_PRINTF("[ESP]"); + base = M.x86.R_ESP; + M.x86.mode |= SYSMODE_SEG_DS_SS; + break; + case 5: + if (mod == 0) { + base = fetch_long_imm(); + DECODE_PRINTF2("%08x", base); + } + else { + DECODE_PRINTF("[EBP]"); + base = M.x86.R_ESP; + M.x86.mode |= SYSMODE_SEG_DS_SS; + } + break; + case 6: + DECODE_PRINTF("[ESI]"); + base = M.x86.R_ESI; + break; + case 7: + DECODE_PRINTF("[EDI]"); + base = M.x86.R_EDI; + break; + } + switch ((sib >> 3) & 0x07) { + case 0: + DECODE_PRINTF("[EAX"); + i = M.x86.R_EAX; + break; + case 1: + DECODE_PRINTF("[ECX"); + i = M.x86.R_ECX; + break; + case 2: + DECODE_PRINTF("[EDX"); + i = M.x86.R_EDX; + break; + case 3: + DECODE_PRINTF("[EBX"); + i = M.x86.R_EBX; + break; + case 4: + i = 0; + break; + case 5: + DECODE_PRINTF("[EBP"); + i = M.x86.R_EBP; + break; + case 6: + DECODE_PRINTF("[ESI"); + i = M.x86.R_ESI; + break; + case 7: + DECODE_PRINTF("[EDI"); + i = M.x86.R_EDI; + break; + } + scale = 1 << ((sib >> 6) & 0x03); + if (((sib >> 3) & 0x07) != 4) { + if (scale == 1) { + DECODE_PRINTF("]"); + } + else { + DECODE_PRINTF2("*%d]", scale); + } + } + return base + (i * scale); +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=00 addressing. Also enables the +decoding of instructions. + +NOTE: The code which specifies the corresponding segment (ds vs ss) + below in the case of [BP+..]. The assumption here is that at the + point that this subroutine is called, the bit corresponding to + SYSMODE_SEG_DS_SS will be zero. After every instruction + except the segment override instructions, this bit (as well + as any bits indicating segment overrides) will be clear. So + if a SS access is needed, set this bit. Otherwise, DS access + occurs (unless any of the segment override bits are set). +****************************************************************************/ +u32 +decode_rm00_address(int rm) +{ + u32 offset; + int sib; + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[EAX]"); + return M.x86.R_EAX; + case 1: + DECODE_PRINTF("[ECX]"); + return M.x86.R_ECX; + case 2: + DECODE_PRINTF("[EDX]"); + return M.x86.R_EDX; + case 3: + DECODE_PRINTF("[EBX]"); + return M.x86.R_EBX; + case 4: + sib = fetch_byte_imm(); + return decode_sib_address(sib, 0); + case 5: + offset = fetch_long_imm(); + DECODE_PRINTF2("[%08x]", offset); + return offset; + case 6: + DECODE_PRINTF("[ESI]"); + return M.x86.R_ESI; + case 7: + DECODE_PRINTF("[EDI]"); + return M.x86.R_EDI; + } + HALT_SYS(); + } + else { + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[BX+SI]"); + return (M.x86.R_BX + M.x86.R_SI) & 0xffff; + case 1: + DECODE_PRINTF("[BX+DI]"); + return (M.x86.R_BX + M.x86.R_DI) & 0xffff; + case 2: + DECODE_PRINTF("[BP+SI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI) & 0xffff; + case 3: + DECODE_PRINTF("[BP+DI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI) & 0xffff; + case 4: + DECODE_PRINTF("[SI]"); + return M.x86.R_SI; + case 5: + DECODE_PRINTF("[DI]"); + return M.x86.R_DI; + case 6: + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]", offset); + return offset; + case 7: + DECODE_PRINTF("[BX]"); + return M.x86.R_BX; + } + HALT_SYS(); + } + return 0; +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=01 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +u32 +decode_rm01_address(int rm) +{ + int displacement = 0; + int sib; + + /* Fetch disp8 if no SIB byte */ + if (!((M.x86.mode & SYSMODE_PREFIX_ADDR) && (rm == 4))) + displacement = (s8) fetch_byte_imm(); + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: + sib = fetch_byte_imm(); + displacement = (s8) fetch_byte_imm(); + DECODE_PRINTF2("%d", displacement); + return decode_sib_address(sib, 1) + displacement; + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + HALT_SYS(); + } + else { + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + HALT_SYS(); + } + return 0; /* SHOULD NOT HAPPEN */ +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=10 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +u32 +decode_rm10_address(int rm) +{ + u32 displacement = 0; + int sib; + + /* Fetch disp16 if 16-bit addr mode */ + if (!(M.x86.mode & SYSMODE_PREFIX_ADDR)) + displacement = (u16) fetch_word_imm(); + else { + /* Fetch disp32 if no SIB byte */ + if (rm != 4) + displacement = (u32) fetch_long_imm(); + } + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%08x[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%08x[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%08x[EDX]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%08x[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: + sib = fetch_byte_imm(); + displacement = (u32) fetch_long_imm(); + DECODE_PRINTF2("%08x", displacement); + return decode_sib_address(sib, 2) + displacement; + break; + case 5: + DECODE_PRINTF2("%08x[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%08x[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%08x[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + HALT_SYS(); + } + else { + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%04x[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%04x[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%04x[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%04x[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%04x[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%04x[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%04x[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%04x[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + HALT_SYS(); + } + return 0; + /*NOTREACHED */ +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/fpu.c b/src/add-ons/kernel/generic/bios/x86emu/fpu.c new file mode 100644 index 0000000000..0dab05ce38 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/fpu.c @@ -0,0 +1,976 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to implement the decoding and +* emulation of the FPU instructions. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/* opcode=0xd8 */ +void +x86emuOp_esc_coprocess_d8(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ESC D8\n"); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_d9_tab[] = { + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", + + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", + + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", +}; + +static const char *x86emu_fpu_op_d9_tab1[] = { + "FLD\t", "FLD\t", "FLD\t", "FLD\t", + "FLD\t", "FLD\t", "FLD\t", "FLD\t", + + "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", + "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", + + "FNOP", "ESC_D9", "ESC_D9", "ESC_D9", + "ESC_D9", "ESC_D9", "ESC_D9", "ESC_D9", + + "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", + "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", + + "FCHS", "FABS", "ESC_D9", "ESC_D9", + "FTST", "FXAM", "ESC_D9", "ESC_D9", + + "FLD1", "FLDL2T", "FLDL2E", "FLDPI", + "FLDLG2", "FLDLN2", "FLDZ", "ESC_D9", + + "F2XM1", "FYL2X", "FPTAN", "FPATAN", + "FXTRACT", "ESC_D9", "FDECSTP", "FINCSTP", + + "FPREM", "FYL2XP1", "FSQRT", "ESC_D9", + "FRNDINT", "FSCALE", "ESC_D9", "ESC_D9", +}; + +#endif /* DEBUG */ + +/* opcode=0xd9 */ +void +x86emuOp_esc_coprocess_d9(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (mod != 3) { + DECODE_PRINTINSTR32(x86emu_fpu_op_d9_tab, mod, rh, rl); + } + else { + DECODE_PRINTF(x86emu_fpu_op_d9_tab1[(rh << 3) + rl]); + } +#endif + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + if (rh < 4) { + DECODE_PRINTF2("ST(%d)\n", stkelem); + } + else { + DECODE_PRINTF("\n"); + } + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_fld(X86EMU_FPU_STKTOP, stkelem); + break; + case 1: + x86emu_fpu_R_fxch(X86EMU_FPU_STKTOP, stkelem); + break; + case 2: + switch (rl) { + case 0: + x86emu_fpu_R_nop(); + break; + default: + x86emu_fpu_illegal(); + break; + } + case 3: + x86emu_fpu_R_fstp(X86EMU_FPU_STKTOP, stkelem); + break; + case 4: + switch (rl) { + case 0: + x86emu_fpu_R_fchs(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fabs(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_ftst(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fxam(X86EMU_FPU_STKTOP); + break; + default: + /* 2,3,6,7 */ + x86emu_fpu_illegal(); + break; + } + break; + + case 5: + switch (rl) { + case 0: + x86emu_fpu_R_fld1(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fldl2t(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fldl2e(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fldpi(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fldlg2(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fldln2(X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fldz(X86EMU_FPU_STKTOP); + break; + default: + /* 7 */ + x86emu_fpu_illegal(); + break; + } + break; + + case 6: + switch (rl) { + case 0: + x86emu_fpu_R_f2xm1(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fyl2x(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fptan(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fpatan(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fxtract(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_illegal(); + break; + case 6: + x86emu_fpu_R_decstp(); + break; + case 7: + x86emu_fpu_R_incstp(); + break; + } + break; + + case 7: + switch (rl) { + case 0: + x86emu_fpu_R_fprem(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fyl2xp1(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fsqrt(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_illegal(); + break; + case 4: + x86emu_fpu_R_frndint(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fscale(X86EMU_FPU_STKTOP); + break; + case 6: + case 7: + default: + x86emu_fpu_illegal(); + break; + } + break; + + default: + switch (rh) { + case 0: + x86emu_fpu_M_fld(X86EMU_FPU_FLOAT, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fst(X86EMU_FPU_FLOAT, destoffset); + break; + case 3: + x86emu_fpu_M_fstp(X86EMU_FPU_FLOAT, destoffset); + break; + case 4: + x86emu_fpu_M_fldenv(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_M_fldcw(X86EMU_FPU_WORD, destoffset); + break; + case 6: + x86emu_fpu_M_fstenv(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fstcw(X86EMU_FPU_WORD, destoffset); + break; + } + } + } +#else + (void) destoffset; + (void) stkelem; +#endif /* X86EMU_FPU_PRESENT */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_da_tab[] = { + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", + "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", +}; + +#endif /* DEBUG */ + +/* opcode=0xda */ +void +x86emuOp_esc_coprocess_da(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_da_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + x86emu_fpu_illegal(); + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_iadd(X86EMU_FPU_SHORT, destoffset); + break; + case 1: + x86emu_fpu_M_imul(X86EMU_FPU_SHORT, destoffset); + break; + case 2: + x86emu_fpu_M_icom(X86EMU_FPU_SHORT, destoffset); + break; + case 3: + x86emu_fpu_M_icomp(X86EMU_FPU_SHORT, destoffset); + break; + case 4: + x86emu_fpu_M_isub(X86EMU_FPU_SHORT, destoffset); + break; + case 5: + x86emu_fpu_M_isubr(X86EMU_FPU_SHORT, destoffset); + break; + case 6: + x86emu_fpu_M_idiv(X86EMU_FPU_SHORT, destoffset); + break; + case 7: + x86emu_fpu_M_idivr(X86EMU_FPU_SHORT, destoffset); + break; + } + } +#else + (void) destoffset; + (void) stkelem; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_db_tab[] = { + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", + + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", + + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", +}; + +#endif /* DEBUG */ + +/* opcode=0xdb */ +void +x86emuOp_esc_coprocess_db(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (mod != 3) { + DECODE_PRINTINSTR32(x86emu_fpu_op_db_tab, mod, rh, rl); + } + else if (rh == 4) { /* === 11 10 0 nnn */ + switch (rl) { + case 0: + DECODE_PRINTF("FENI\n"); + break; + case 1: + DECODE_PRINTF("FDISI\n"); + break; + case 2: + DECODE_PRINTF("FCLEX\n"); + break; + case 3: + DECODE_PRINTF("FINIT\n"); + break; + } + } + else { + DECODE_PRINTF2("ESC_DB %0x\n", (mod << 6) + (rh << 3) + (rl)); + } +#endif /* DEBUG */ + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + break; + case 1: + destoffset = decode_rm01_address(rl); + break; + case 2: + destoffset = decode_rm10_address(rl); + break; + case 3: /* register to register */ + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 4: + switch (rl) { + case 0: + x86emu_fpu_R_feni(); + break; + case 1: + x86emu_fpu_R_fdisi(); + break; + case 2: + x86emu_fpu_R_fclex(); + break; + case 3: + x86emu_fpu_R_finit(); + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fild(X86EMU_FPU_SHORT, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fist(X86EMU_FPU_SHORT, destoffset); + break; + case 3: + x86emu_fpu_M_fistp(X86EMU_FPU_SHORT, destoffset); + break; + case 4: + x86emu_fpu_illegal(); + break; + case 5: + x86emu_fpu_M_fld(X86EMU_FPU_LDBL, destoffset); + break; + case 6: + x86emu_fpu_illegal(); + break; + case 7: + x86emu_fpu_M_fstp(X86EMU_FPU_LDBL, destoffset); + break; + } + } +#else + (void) destoffset; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG +static const char *x86emu_fpu_op_dc_tab[] = { + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\t", "FMUL\t", "FCOM\t", "FCOMP\t", + "FSUBR\t", "FSUB\t", "FDIVR\t", "FDIV\t", +}; +#endif /* DEBUG */ + +/* opcode=0xdc */ +void +x86emuOp_esc_coprocess_dc(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_dc_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_fadd(stkelem, X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fmul(stkelem, X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fcom(stkelem, X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fsubr(stkelem, X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fsub(stkelem, X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fdivr(stkelem, X86EMU_FPU_STKTOP); + break; + case 7: + x86emu_fpu_R_fdiv(stkelem, X86EMU_FPU_STKTOP); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fadd(X86EMU_FPU_DOUBLE, destoffset); + break; + case 1: + x86emu_fpu_M_fmul(X86EMU_FPU_DOUBLE, destoffset); + break; + case 2: + x86emu_fpu_M_fcom(X86EMU_FPU_DOUBLE, destoffset); + break; + case 3: + x86emu_fpu_M_fcomp(X86EMU_FPU_DOUBLE, destoffset); + break; + case 4: + x86emu_fpu_M_fsub(X86EMU_FPU_DOUBLE, destoffset); + break; + case 5: + x86emu_fpu_M_fsubr(X86EMU_FPU_DOUBLE, destoffset); + break; + case 6: + x86emu_fpu_M_fdiv(X86EMU_FPU_DOUBLE, destoffset); + break; + case 7: + x86emu_fpu_M_fdivr(X86EMU_FPU_DOUBLE, destoffset); + break; + } + } +#else + (void) destoffset; + (void) stkelem; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_dd_tab[] = { + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", + "ESC_DD\t2C,", "ESC_DD\t2D,", "ESC_DD\t2E,", "ESC_DD\t2F,", +}; + +#endif /* DEBUG */ + +/* opcode=0xdd */ +void +x86emuOp_esc_coprocess_dd(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_dd_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_ffree(stkelem); + break; + case 1: + x86emu_fpu_R_fxch(stkelem); + break; + case 2: + x86emu_fpu_R_fst(stkelem); /* register version */ + break; + case 3: + x86emu_fpu_R_fstp(stkelem); /* register version */ + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fld(X86EMU_FPU_DOUBLE, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fst(X86EMU_FPU_DOUBLE, destoffset); + break; + case 3: + x86emu_fpu_M_fstp(X86EMU_FPU_DOUBLE, destoffset); + break; + case 4: + x86emu_fpu_M_frstor(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_illegal(); + break; + case 6: + x86emu_fpu_M_fsave(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fstsw(X86EMU_FPU_WORD, destoffset); + break; + } + } +#else + (void) destoffset; + (void) stkelem; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_de_tab[] = { + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FADDP\t", "FMULP\t", "FCOMP\t", "FCOMPP\t", + "FSUBRP\t", "FSUBP\t", "FDIVRP\t", "FDIVP\t", +}; + +#endif /* DEBUG */ + +/* opcode=0xde */ +void +x86emuOp_esc_coprocess_de(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_de_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_faddp(stkelem, X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fmulp(stkelem, X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); + break; + case 3: + if (stkelem == 1) + x86emu_fpu_R_fcompp(stkelem, X86EMU_FPU_STKTOP); + else + x86emu_fpu_illegal(); + break; + case 4: + x86emu_fpu_R_fsubrp(stkelem, X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fsubp(stkelem, X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fdivrp(stkelem, X86EMU_FPU_STKTOP); + break; + case 7: + x86emu_fpu_R_fdivp(stkelem, X86EMU_FPU_STKTOP); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fiadd(X86EMU_FPU_WORD, destoffset); + break; + case 1: + x86emu_fpu_M_fimul(X86EMU_FPU_WORD, destoffset); + break; + case 2: + x86emu_fpu_M_ficom(X86EMU_FPU_WORD, destoffset); + break; + case 3: + x86emu_fpu_M_ficomp(X86EMU_FPU_WORD, destoffset); + break; + case 4: + x86emu_fpu_M_fisub(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_M_fisubr(X86EMU_FPU_WORD, destoffset); + break; + case 6: + x86emu_fpu_M_fidiv(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fidivr(X86EMU_FPU_WORD, destoffset); + break; + } + } +#else + (void) destoffset; + (void) stkelem; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_df_tab[] = { + /* mod == 00 */ + "FILD\tWORD PTR ", "ESC_DF\t39\n", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 01 */ + "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 10 */ + "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 11 */ + "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", + "ESC_DF\t3C,", "ESC_DF\t3D,", "ESC_DF\t3E,", "ESC_DF\t3F," +}; + +#endif /* DEBUG */ + +/* opcode=0xdf */ +void +x86emuOp_esc_coprocess_df(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset = 0; + u8 stkelem = 0; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_df_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8) rl; + DECODE_PRINTF2("\tST(%d)\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_ffree(stkelem); + break; + case 1: + x86emu_fpu_R_fxch(stkelem); + break; + case 2: + x86emu_fpu_R_fst(stkelem); /* register version */ + break; + case 3: + x86emu_fpu_R_fstp(stkelem); /* register version */ + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fild(X86EMU_FPU_WORD, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fist(X86EMU_FPU_WORD, destoffset); + break; + case 3: + x86emu_fpu_M_fistp(X86EMU_FPU_WORD, destoffset); + break; + case 4: + x86emu_fpu_M_fbld(X86EMU_FPU_BSD, destoffset); + break; + case 5: + x86emu_fpu_M_fild(X86EMU_FPU_LONG, destoffset); + break; + case 6: + x86emu_fpu_M_fbstp(X86EMU_FPU_BSD, destoffset); + break; + case 7: + x86emu_fpu_M_fistp(X86EMU_FPU_LONG, destoffset); + break; + } + } +#else + (void) destoffset; + (void) stkelem; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/ops.c b/src/add-ons/kernel/generic/bios/x86emu/ops.c new file mode 100644 index 0000000000..76b83581f5 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/ops.c @@ -0,0 +1,12307 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 processor instructions. +* +* There are approximately 250 subroutines in here, which correspond +* to the 256 byte-"opcodes" found on the 8086. The table which +* dispatches this is found in the files optab.[ch]. +* +* Each opcode proc has a comment preceeding it which gives it's table +* address. Several opcodes are missing (undefined) in the table. +* +* Each proc includes information for decoding (DECODE_PRINTF and +* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc +* functions (START_OF_INSTR, END_OF_INSTR). +* +* Many of the procedures are *VERY* similar in coding. This has +* allowed for a very large amount of code to be generated in a fairly +* short amount of time (i.e. cut, paste, and modify). The result is +* that much of the code below could have been folded into subroutines +* for a large reduction in size of this file. The downside would be +* that there would be a penalty in execution speed. The file could +* also have been *MUCH* larger by inlining certain functions which +* were called. This could have resulted even faster execution. The +* prime directive I used to decide whether to inline the code or to +* modularize it, was basically: 1) no unnecessary subroutine calls, +* 2) no routines more than about 200 lines in size, and 3) modularize +* any code that I might not get right the first time. The fetch_* +* subroutines fall into the latter category. The The decode_* fall +* into the second category. The coding of the "switch(mod){ .... }" +* in many of the subroutines below falls into the first category. +* Especially, the coding of {add,and,or,sub,...}_{byte,word} +* subroutines are an especially glaring case of the third guideline. +* Since so much of the code is cloned from other modules (compare +* opcode #00 to opcode #01), making the basic operations subroutine +* calls is especially important; otherwise mistakes in coding an +* "add" would represent a nightmare in maintenance. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +static void +x86emuOp_illegal_op(u8 op1) +{ + START_OF_INSTR(); + if (M.x86.R_SP != 0) { + DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); + TRACE_REGS(); + DB(printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP - 1, op1)); + HALT_SYS(); + } + else { + /* If we get here, it means the stack pointer is back to zero + * so we are just returning from an emulator service call + * so therte is no need to display an error message. We trap + * the emulator with an 0xF1 opcode to finish the service + * call. + */ + X86EMU_halt_sys(); + } + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x00 +****************************************************************************/ +static void +x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg, *srcreg; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("ADD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x01 +****************************************************************************/ +static void +x86emuOp_add_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("ADD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = add_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x02 +****************************************************************************/ +static void +x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("ADD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x03 +****************************************************************************/ +static void +x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("ADD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = add_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x04 +****************************************************************************/ +static void +x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("ADD\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = add_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x05 +****************************************************************************/ +static void +x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("ADD\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("ADD\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = add_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = add_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x06 +****************************************************************************/ +static void +x86emuOp_push_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tES\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_ES); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x07 +****************************************************************************/ +static void +x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tES\n"); + TRACE_AND_STEP(); + M.x86.R_ES = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x08 +****************************************************************************/ +static void +x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("OR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x09 +****************************************************************************/ +static void +x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("OR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = or_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0a +****************************************************************************/ +static void +x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("OR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0b +****************************************************************************/ +static void +x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("OR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = or_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0c +****************************************************************************/ +static void +x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("OR\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = or_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0d +****************************************************************************/ +static void +x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OR\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("OR\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = or_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = or_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0e +****************************************************************************/ +static void +x86emuOp_push_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tCS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f. Escape for two-byte opcode (286 or better) +****************************************************************************/ +static void +x86emuOp_two_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 op2 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + + INC_DECODED_INST_LEN(1); + (*x86emu_optab2[op2]) (op2); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x10 +****************************************************************************/ +static void +x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("ADC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x11 +****************************************************************************/ +static void +x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("ADC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = adc_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x12 +****************************************************************************/ +static void +x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("ADC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x13 +****************************************************************************/ +static void +x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("ADC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = adc_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x14 +****************************************************************************/ +static void +x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("ADC\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = adc_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x15 +****************************************************************************/ +static void +x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("ADC\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("ADC\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = adc_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x16 +****************************************************************************/ +static void +x86emuOp_push_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tSS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_SS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x17 +****************************************************************************/ +static void +x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tSS\n"); + TRACE_AND_STEP(); + M.x86.R_SS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x18 +****************************************************************************/ +static void +x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("SBB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x19 +****************************************************************************/ +static void +x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SBB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sbb_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1a +****************************************************************************/ +static void +x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("SBB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1b +****************************************************************************/ +static void +x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SBB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sbb_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1c +****************************************************************************/ +static void +x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("SBB\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1d +****************************************************************************/ +static void +x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("SBB\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("SBB\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = sbb_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1e +****************************************************************************/ +static void +x86emuOp_push_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tDS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_DS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1f +****************************************************************************/ +static void +x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tDS\n"); + TRACE_AND_STEP(); + M.x86.R_DS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x20 +****************************************************************************/ +static void +x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("AND\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x21 +****************************************************************************/ +static void +x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("AND\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = and_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x22 +****************************************************************************/ +static void +x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("AND\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x23 +****************************************************************************/ +static void +x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("AND\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_long(*destreg, srcval); + break; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_word(*destreg, srcval); + break; + } + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = and_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x24 +****************************************************************************/ +static void +x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("AND\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = and_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x25 +****************************************************************************/ +static void +x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("AND\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("AND\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = and_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = and_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x26 +****************************************************************************/ +static void +x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ES:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_ES; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x27 +****************************************************************************/ +static void +x86emuOp_daa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAA\n"); + TRACE_AND_STEP(); + M.x86.R_AL = daa_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x28 +****************************************************************************/ +static void +x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("SUB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x29 +****************************************************************************/ +static void +x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SUB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = sub_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2a +****************************************************************************/ +static void +x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("SUB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2b +****************************************************************************/ +static void +x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SUB\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = sub_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2c +****************************************************************************/ +static void +x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("SUB\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = sub_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2d +****************************************************************************/ +static void +x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("SUB\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("SUB\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = sub_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2e +****************************************************************************/ +static void +x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("CS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_CS; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2f +****************************************************************************/ +static void +x86emuOp_das(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAS\n"); + TRACE_AND_STEP(); + M.x86.R_AL = das_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x30 +****************************************************************************/ +static void +x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("XOR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_byte(destval, *srcreg); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x31 +****************************************************************************/ +static void +x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("XOR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_long(destval, *srcreg); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = xor_word(destval, *srcreg); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x32 +****************************************************************************/ +static void +x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("XOR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x33 +****************************************************************************/ +static void +x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("XOR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = xor_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x34 +****************************************************************************/ +static void +x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("XOR\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = xor_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x35 +****************************************************************************/ +static void +x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XOR\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("XOR\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval); + } + else { + M.x86.R_AX = xor_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x36 +****************************************************************************/ +static void +x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_SS; + /* no DECODE_CLEAR_SEGOVR ! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x37 +****************************************************************************/ +static void +x86emuOp_aaa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAA\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aaa_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x38 +****************************************************************************/ +static void +x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg, *srcreg; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("CMP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(destval, *srcreg); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(destval, *srcreg); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(destval, *srcreg); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x39 +****************************************************************************/ +static void +x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("CMP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(destval, *srcreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(destval, *srcreg); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(destval, *srcreg); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3a +****************************************************************************/ +static void +x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("CMP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(*destreg, srcval); + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(*destreg, srcval); + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(*destreg, srcval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3b +****************************************************************************/ +static void +x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("CMP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(*destreg, srcval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(*destreg, srcval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(*destreg, srcval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + cmp_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3c +****************************************************************************/ +static void +x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("CMP\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + cmp_byte(M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3d +****************************************************************************/ +static void +x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CMP\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("CMP\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + cmp_long(M.x86.R_EAX, srcval); + } + else { + cmp_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3e +****************************************************************************/ +static void +x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_DS; + /* NO DECODE_CLEAR_SEGOVR! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3f +****************************************************************************/ +static void +x86emuOp_aas(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAS\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aas_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x40 +****************************************************************************/ +static void +x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tEAX\n"); + } + else { + DECODE_PRINTF("INC\tAX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = inc_long(M.x86.R_EAX); + } + else { + M.x86.R_AX = inc_word(M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x41 +****************************************************************************/ +static void +x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tECX\n"); + } + else { + DECODE_PRINTF("INC\tCX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = inc_long(M.x86.R_ECX); + } + else { + M.x86.R_CX = inc_word(M.x86.R_CX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x42 +****************************************************************************/ +static void +x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tEDX\n"); + } + else { + DECODE_PRINTF("INC\tDX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDX = inc_long(M.x86.R_EDX); + } + else { + M.x86.R_DX = inc_word(M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x43 +****************************************************************************/ +static void +x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tEBX\n"); + } + else { + DECODE_PRINTF("INC\tBX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBX = inc_long(M.x86.R_EBX); + } + else { + M.x86.R_BX = inc_word(M.x86.R_BX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x44 +****************************************************************************/ +static void +x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tESP\n"); + } + else { + DECODE_PRINTF("INC\tSP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESP = inc_long(M.x86.R_ESP); + } + else { + M.x86.R_SP = inc_word(M.x86.R_SP); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x45 +****************************************************************************/ +static void +x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tEBP\n"); + } + else { + DECODE_PRINTF("INC\tBP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBP = inc_long(M.x86.R_EBP); + } + else { + M.x86.R_BP = inc_word(M.x86.R_BP); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x46 +****************************************************************************/ +static void +x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tESI\n"); + } + else { + DECODE_PRINTF("INC\tSI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESI = inc_long(M.x86.R_ESI); + } + else { + M.x86.R_SI = inc_word(M.x86.R_SI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x47 +****************************************************************************/ +static void +x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tEDI\n"); + } + else { + DECODE_PRINTF("INC\tDI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = inc_long(M.x86.R_EDI); + } + else { + M.x86.R_DI = inc_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x48 +****************************************************************************/ +static void +x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tEAX\n"); + } + else { + DECODE_PRINTF("DEC\tAX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = dec_long(M.x86.R_EAX); + } + else { + M.x86.R_AX = dec_word(M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x49 +****************************************************************************/ +static void +x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tECX\n"); + } + else { + DECODE_PRINTF("DEC\tCX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = dec_long(M.x86.R_ECX); + } + else { + M.x86.R_CX = dec_word(M.x86.R_CX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4a +****************************************************************************/ +static void +x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tEDX\n"); + } + else { + DECODE_PRINTF("DEC\tDX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDX = dec_long(M.x86.R_EDX); + } + else { + M.x86.R_DX = dec_word(M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4b +****************************************************************************/ +static void +x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tEBX\n"); + } + else { + DECODE_PRINTF("DEC\tBX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBX = dec_long(M.x86.R_EBX); + } + else { + M.x86.R_BX = dec_word(M.x86.R_BX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4c +****************************************************************************/ +static void +x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tESP\n"); + } + else { + DECODE_PRINTF("DEC\tSP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESP = dec_long(M.x86.R_ESP); + } + else { + M.x86.R_SP = dec_word(M.x86.R_SP); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4d +****************************************************************************/ +static void +x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tEBP\n"); + } + else { + DECODE_PRINTF("DEC\tBP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBP = dec_long(M.x86.R_EBP); + } + else { + M.x86.R_BP = dec_word(M.x86.R_BP); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4e +****************************************************************************/ +static void +x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tESI\n"); + } + else { + DECODE_PRINTF("DEC\tSI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESI = dec_long(M.x86.R_ESI); + } + else { + M.x86.R_SI = dec_word(M.x86.R_SI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x4f +****************************************************************************/ +static void +x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tEDI\n"); + } + else { + DECODE_PRINTF("DEC\tDI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = dec_long(M.x86.R_EDI); + } + else { + M.x86.R_DI = dec_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x50 +****************************************************************************/ +static void +x86emuOp_push_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tEAX\n"); + } + else { + DECODE_PRINTF("PUSH\tAX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EAX); + } + else { + push_word(M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x51 +****************************************************************************/ +static void +x86emuOp_push_CX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tECX\n"); + } + else { + DECODE_PRINTF("PUSH\tCX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_ECX); + } + else { + push_word(M.x86.R_CX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x52 +****************************************************************************/ +static void +x86emuOp_push_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tEDX\n"); + } + else { + DECODE_PRINTF("PUSH\tDX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EDX); + } + else { + push_word(M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x53 +****************************************************************************/ +static void +x86emuOp_push_BX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tEBX\n"); + } + else { + DECODE_PRINTF("PUSH\tBX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EBX); + } + else { + push_word(M.x86.R_BX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x54 +****************************************************************************/ +static void +x86emuOp_push_SP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tESP\n"); + } + else { + DECODE_PRINTF("PUSH\tSP\n"); + } + TRACE_AND_STEP(); + /* Always push (E)SP, since we are emulating an i386 and above + * processor. This is necessary as some BIOS'es use this to check + * what type of processor is in the system. + */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_ESP); + } + else { + push_word((u16) (M.x86.R_SP)); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x55 +****************************************************************************/ +static void +x86emuOp_push_BP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tEBP\n"); + } + else { + DECODE_PRINTF("PUSH\tBP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EBP); + } + else { + push_word(M.x86.R_BP); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x56 +****************************************************************************/ +static void +x86emuOp_push_SI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tESI\n"); + } + else { + DECODE_PRINTF("PUSH\tSI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_ESI); + } + else { + push_word(M.x86.R_SI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x57 +****************************************************************************/ +static void +x86emuOp_push_DI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSH\tEDI\n"); + } + else { + DECODE_PRINTF("PUSH\tDI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EDI); + } + else { + push_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x58 +****************************************************************************/ +static void +x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tEAX\n"); + } + else { + DECODE_PRINTF("POP\tAX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = pop_long(); + } + else { + M.x86.R_AX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x59 +****************************************************************************/ +static void +x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tECX\n"); + } + else { + DECODE_PRINTF("POP\tCX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = pop_long(); + } + else { + M.x86.R_CX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5a +****************************************************************************/ +static void +x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tEDX\n"); + } + else { + DECODE_PRINTF("POP\tDX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDX = pop_long(); + } + else { + M.x86.R_DX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5b +****************************************************************************/ +static void +x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tEBX\n"); + } + else { + DECODE_PRINTF("POP\tBX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBX = pop_long(); + } + else { + M.x86.R_BX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5c +****************************************************************************/ +static void +x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tESP\n"); + } + else { + DECODE_PRINTF("POP\tSP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESP = pop_long(); + } + else { + M.x86.R_SP = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5d +****************************************************************************/ +static void +x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tEBP\n"); + } + else { + DECODE_PRINTF("POP\tBP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBP = pop_long(); + } + else { + M.x86.R_BP = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5e +****************************************************************************/ +static void +x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tESI\n"); + } + else { + DECODE_PRINTF("POP\tSI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESI = pop_long(); + } + else { + M.x86.R_SI = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x5f +****************************************************************************/ +static void +x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POP\tEDI\n"); + } + else { + DECODE_PRINTF("POP\tDI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = pop_long(); + } + else { + M.x86.R_DI = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x60 +****************************************************************************/ +static void +x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHAD\n"); + } + else { + DECODE_PRINTF("PUSHA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 old_sp = M.x86.R_ESP; + + push_long(M.x86.R_EAX); + push_long(M.x86.R_ECX); + push_long(M.x86.R_EDX); + push_long(M.x86.R_EBX); + push_long(old_sp); + push_long(M.x86.R_EBP); + push_long(M.x86.R_ESI); + push_long(M.x86.R_EDI); + } + else { + u16 old_sp = M.x86.R_SP; + + push_word(M.x86.R_AX); + push_word(M.x86.R_CX); + push_word(M.x86.R_DX); + push_word(M.x86.R_BX); + push_word(old_sp); + push_word(M.x86.R_BP); + push_word(M.x86.R_SI); + push_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x61 +****************************************************************************/ +static void +x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPAD\n"); + } + else { + DECODE_PRINTF("POPA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = pop_long(); + M.x86.R_ESI = pop_long(); + M.x86.R_EBP = pop_long(); + M.x86.R_ESP += 4; /* skip ESP */ + M.x86.R_EBX = pop_long(); + M.x86.R_EDX = pop_long(); + M.x86.R_ECX = pop_long(); + M.x86.R_EAX = pop_long(); + } + else { + M.x86.R_DI = pop_word(); + M.x86.R_SI = pop_word(); + M.x86.R_BP = pop_word(); + M.x86.R_SP += 2; /* skip SP */ + M.x86.R_BX = pop_word(); + M.x86.R_DX = pop_word(); + M.x86.R_CX = pop_word(); + M.x86.R_AX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ +/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ + +/**************************************************************************** +REMARKS: +Handles opcode 0x64 +****************************************************************************/ +static void +x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("FS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_FS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x65 +****************************************************************************/ +static void +x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("GS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_GS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x66 - prefix for 32-bit register +****************************************************************************/ +static void +x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DATA:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_DATA; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x67 - prefix for 32-bit address +****************************************************************************/ +static void +x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ADDR:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_ADDR; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x68 +****************************************************************************/ +static void +x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 imm; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + imm = fetch_long_imm(); + } + else { + imm = fetch_word_imm(); + } + DECODE_PRINTF2("PUSH\t%x\n", imm); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(imm); + } + else { + push_word((u16) imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x69 +****************************************************************************/ +static void +x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + u32 res_lo, res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * srcreg, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg, *srcreg; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + res = (s16) * srcreg * (s16) imm; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6a +****************************************************************************/ +static void +x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 imm; + + START_OF_INSTR(); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2("PUSH\t%d\n", imm); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long((s32) imm); + } + else { + push_word(imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6b +****************************************************************************/ +static void +x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + s8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + res = (s16) srcval *(s16) imm; + + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * srcreg, (s32) imm); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg, *srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32) imm); + res = (s16) * srcreg * (s16) imm; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6c +****************************************************************************/ +static void +x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("INSB\n"); + ins(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6d +****************************************************************************/ +static void +x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INSD\n"); + ins(4); + } + else { + DECODE_PRINTF("INSW\n"); + ins(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6e +****************************************************************************/ +static void +x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUTSB\n"); + outs(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6f +****************************************************************************/ +static void +x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUTSD\n"); + outs(4); + } + else { + DECODE_PRINTF("OUTSW\n"); + outs(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x70 +****************************************************************************/ +static void +x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JO\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_OF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x71 +****************************************************************************/ +static void +x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if overflow is not set */ + START_OF_INSTR(); + DECODE_PRINTF("JNO\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!ACCESS_FLAG(F_OF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x72 +****************************************************************************/ +static void +x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if carry flag is set. */ + START_OF_INSTR(); + DECODE_PRINTF("JB\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_CF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x73 +****************************************************************************/ +static void +x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if carry flag is clear. */ + START_OF_INSTR(); + DECODE_PRINTF("JNB\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!ACCESS_FLAG(F_CF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x74 +****************************************************************************/ +static void +x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if zero flag is set. */ + START_OF_INSTR(); + DECODE_PRINTF("JZ\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_ZF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x75 +****************************************************************************/ +static void +x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if zero flag is clear. */ + START_OF_INSTR(); + DECODE_PRINTF("JNZ\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!ACCESS_FLAG(F_ZF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x76 +****************************************************************************/ +static void +x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if carry flag is set or if the zero + flag is set. */ + START_OF_INSTR(); + DECODE_PRINTF("JBE\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x77 +****************************************************************************/ +static void +x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if carry flag is clear and if the zero + flag is clear */ + START_OF_INSTR(); + DECODE_PRINTF("JNBE\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x78 +****************************************************************************/ +static void +x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if sign flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JS\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_SF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x79 +****************************************************************************/ +static void +x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if sign flag is clear */ + START_OF_INSTR(); + DECODE_PRINTF("JNS\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!ACCESS_FLAG(F_SF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7a +****************************************************************************/ +static void +x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if parity flag is set (even parity) */ + START_OF_INSTR(); + DECODE_PRINTF("JP\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_PF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7b +****************************************************************************/ +static void +x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + + /* jump to byte offset if parity flag is clear (odd parity) */ + START_OF_INSTR(); + DECODE_PRINTF("JNP\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (!ACCESS_FLAG(F_PF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7c +****************************************************************************/ +static void +x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + int sf, of; + + /* jump to byte offset if sign flag not equal to overflow flag. */ + START_OF_INSTR(); + DECODE_PRINTF("JL\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + sf = ACCESS_FLAG(F_SF) != 0; + of = ACCESS_FLAG(F_OF) != 0; + if (sf ^ of) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7d +****************************************************************************/ +static void +x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + int sf, of; + + /* jump to byte offset if sign flag not equal to overflow flag. */ + START_OF_INSTR(); + DECODE_PRINTF("JNL\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + sf = ACCESS_FLAG(F_SF) != 0; + of = ACCESS_FLAG(F_OF) != 0; + /* note: inverse of above, but using == instead of xor. */ + if (sf == of) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7e +****************************************************************************/ +static void +x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + int sf, of; + + /* jump to byte offset if sign flag not equal to overflow flag + or the zero flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JLE\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + sf = ACCESS_FLAG(F_SF) != 0; + of = ACCESS_FLAG(F_OF) != 0; + if ((sf ^ of) || ACCESS_FLAG(F_ZF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x7f +****************************************************************************/ +static void +x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1)) +{ + s8 offset; + u16 target; + int sf, of; + + /* jump to byte offset if sign flag equal to overflow flag. + and the zero flag is clear */ + START_OF_INSTR(); + DECODE_PRINTF("JNLE\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + (s16) offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + sf = ACCESS_FLAG(F_SF) != 0; + of = ACCESS_FLAG(F_OF) != 0; + if ((sf == of) && !ACCESS_FLAG(F_ZF)) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +static u8(*opc80_byte_operation[]) (u8 d, u8 s) = { + add_byte, /* 00 */ + or_byte, /* 01 */ + adc_byte, /* 02 */ + sbb_byte, /* 03 */ + and_byte, /* 04 */ + sub_byte, /* 05 */ + xor_byte, /* 06 */ + cmp_byte, /* 07 */ +}; + +/**************************************************************************** +REMARKS: +Handles opcode 0x80 +****************************************************************************/ +static void +x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc80_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc80_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc80_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc80_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +static u16(*opc81_word_operation[]) (u16 d, u16 s) = { + add_word, /*00 */ + or_word, /*01 */ + adc_word, /*02 */ + sbb_word, /*03 */ + and_word, /*04 */ + sub_word, /*05 */ + xor_word, /*06 */ + cmp_word, /*07 */ +}; + +static u32(*opc81_long_operation[]) (u32 d, u32 s) = { + add_long, /*00 */ + or_long, /*01 */ + adc_long, /*02 */ + sbb_long, /*03 */ + and_long, /*04 */ + sub_long, /*05 */ + xor_long, /*06 */ + cmp_long, /*07 */ +}; + +/**************************************************************************** +REMARKS: +Handles opcode 0x81 +****************************************************************************/ +static void +x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* + * Know operation, decode the mod byte to find the addressing + * mode. + */ + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval, imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + else { + u16 *destreg; + u16 destval, imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc81_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +static u8(*opc82_byte_operation[]) (u8 s, u8 d) = { + add_byte, /*00 */ + or_byte, /*01 *//*YYY UNUSED ???? */ + adc_byte, /*02 */ + sbb_byte, /*03 */ + and_byte, /*04 *//*YYY UNUSED ???? */ + sub_byte, /*05 */ + xor_byte, /*06 *//*YYY UNUSED ???? */ + cmp_byte, /*07 */ +}; + +/**************************************************************************** +REMARKS: +Handles opcode 0x82 +****************************************************************************/ +static void +x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc82_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc82_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc82_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc82_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +static u16(*opc83_word_operation[]) (u16 s, u16 d) = { + add_word, /*00 */ + or_word, /*01 *//*YYY UNUSED ???? */ + adc_word, /*02 */ + sbb_word, /*03 */ + and_word, /*04 *//*YYY UNUSED ???? */ + sub_word, /*05 */ + xor_word, /*06 *//*YYY UNUSED ???? */ + cmp_word, /*07 */ +}; + +static u32(*opc83_long_operation[]) (u32 s, u32 d) = { + add_long, /*00 */ + or_long, /*01 *//*YYY UNUSED ???? */ + adc_long, /*02 */ + sbb_long, /*03 */ + and_long, /*04 *//*YYY UNUSED ???? */ + sub_long, /*05 */ + xor_long, /*06 *//*YYY UNUSED ???? */ + cmp_long, /*07 */ +}; + +/**************************************************************************** +REMARKS: +Handles opcode 0x83 +****************************************************************************/ +static void +x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } + else { + u16 destval, imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm10_address(rl); + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval, imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + else { + u16 *destreg; + u16 destval, imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*opc83_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x84 +****************************************************************************/ +static void +x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(*destreg, *srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x85 +****************************************************************************/ +static void +x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } + else { + u16 destval; + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(*destreg, *srcreg); + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(*destreg, *srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x86 +****************************************************************************/ +static void +x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + u8 tmp; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x87 +****************************************************************************/ +static void +x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval, tmp; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } + else { + u16 *srcreg; + u16 destval, tmp; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval, tmp; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } + else { + u16 *srcreg; + u16 destval, tmp; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval, tmp; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } + else { + u16 *srcreg; + u16 destval, tmp; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + u32 tmp; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + else { + u16 *destreg, *srcreg; + u16 tmp; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x88 +****************************************************************************/ +static void +x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x89 +****************************************************************************/ +static void +x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u32 destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } + else { + u16 *srcreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } + else { + u16 *srcreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } + else { + u16 *srcreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8a +****************************************************************************/ +static void +x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 1: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 2: + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8b +****************************************************************************/ +static void +x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8c +****************************************************************************/ +static void +x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint destoffset; + u16 destval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8d +****************************************************************************/ +static void +x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LEA\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u32) destoffset; + } + else { + u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16) destoffset; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u32) destoffset; + } + else { + u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16) destoffset; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u32) destoffset; + } + else { + u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); + + DECODE_PRINTF(","); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16) destoffset; + } + break; + case 3: /* register to register */ + /* undefined. Do nothing. */ + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8e +****************************************************************************/ +static void +x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint srcoffset; + u16 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 1: + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 2: + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 3: /* register to register */ + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + break; + } + /* + * Clean up, and reset all the R_xSP pointers to the correct + * locations. This is about 3x too much overhead (doing all the + * segreg ptrs when only one is needed, but this instruction + * *cannot* be that common, and this isn't too much work anyway. + */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8f +****************************************************************************/ +static void +x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("POP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_long(); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_word(); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x90 +****************************************************************************/ +static void +x86emuOp_nop(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("NOP\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x91 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,ECX\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,CX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_ECX; + M.x86.R_ECX = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_CX; + M.x86.R_CX = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x92 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,EDX\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,DX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_EDX; + M.x86.R_EDX = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_DX; + M.x86.R_DX = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x93 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,EBX\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,BX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_EBX; + M.x86.R_EBX = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_BX; + M.x86.R_BX = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x94 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,ESP\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,SP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_ESP; + M.x86.R_ESP = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_SP; + M.x86.R_SP = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x95 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,EBP\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,BP\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_EBP; + M.x86.R_EBP = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_BP; + M.x86.R_BP = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x96 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,ESI\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,SI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_ESI; + M.x86.R_ESI = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_SI; + M.x86.R_SI = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x97 +****************************************************************************/ +static void +x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("XCHG\tEAX,EDI\n"); + } + else { + DECODE_PRINTF("XCHG\tAX,DI\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + tmp = M.x86.R_EAX; + M.x86.R_EAX = M.x86.R_EDI; + M.x86.R_EDI = tmp; + } + else { + tmp = M.x86.R_AX; + M.x86.R_AX = M.x86.R_DI; + M.x86.R_DI = (u16) tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x98 +****************************************************************************/ +static void +x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CWDE\n"); + } + else { + DECODE_PRINTF("CBW\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_AX & 0x8000) { + M.x86.R_EAX |= 0xffff0000; + } + else { + M.x86.R_EAX &= 0x0000ffff; + } + } + else { + if (M.x86.R_AL & 0x80) { + M.x86.R_AH = 0xff; + } + else { + M.x86.R_AH = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x99 +****************************************************************************/ +static void +x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CDQ\n"); + } + else { + DECODE_PRINTF("CWD\n"); + } + DECODE_PRINTF("CWD\n"); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_EAX & 0x80000000) { + M.x86.R_EDX = 0xffffffff; + } + else { + M.x86.R_EDX = 0x0; + } + } + else { + if (M.x86.R_AX & 0x8000) { + M.x86.R_DX = 0xffff; + } + else { + M.x86.R_DX = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9a +****************************************************************************/ +static void +x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 farseg, faroff; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + faroff = fetch_long_imm(); + farseg = fetch_word_imm(); + } + else { + faroff = fetch_word_imm(); + farseg = fetch_word_imm(); + } + DECODE_PRINTF2("%04x:", farseg); + DECODE_PRINTF2("%04x\n", faroff); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR "); + + /* XXX + * + * Hooked interrupt vectors calling into our "BIOS" will cause + * problems unless all intersegment stuff is checked for BIOS + * access. Check needed here. For moment, let it alone. + */ + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = farseg; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EIP); + } + else { + push_word(M.x86.R_IP); + } + M.x86.R_EIP = faroff & 0xffff; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9b +****************************************************************************/ +static void +x86emuOp_wait(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("WAIT"); + TRACE_AND_STEP(); + /* NADA. */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9c +****************************************************************************/ +static void +x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) +{ + u32 flags; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHFD\n"); + } + else { + DECODE_PRINTF("PUSHF\n"); + } + TRACE_AND_STEP(); + + /* clear out *all* bits not representing flags, and turn on real bits */ + flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(flags); + } + else { + push_word((u16) flags); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9d +****************************************************************************/ +static void +x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPFD\n"); + } + else { + DECODE_PRINTF("POPF\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EFLG = pop_long(); + } + else { + M.x86.R_FLG = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9e +****************************************************************************/ +static void +x86emuOp_sahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SAHF\n"); + TRACE_AND_STEP(); + /* clear the lower bits of the flag register */ + M.x86.R_FLG &= 0xffffff00; + /* or in the AH register into the flags register */ + M.x86.R_FLG |= M.x86.R_AH; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9f +****************************************************************************/ +static void +x86emuOp_lahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LAHF\n"); + TRACE_AND_STEP(); + M.x86.R_AH = (u8) (M.x86.R_FLG & 0xff); + /*undocumented TC++ behavior??? Nope. It's documented, but + you have too look real hard to notice it. */ + M.x86.R_AH |= 0x2; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa0 +****************************************************************************/ +static void +x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tAL,"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]\n", offset); + TRACE_AND_STEP(); + M.x86.R_AL = fetch_data_byte(offset); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa1 +****************************************************************************/ +static void +x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); + } + else { + DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(offset); + } + else { + M.x86.R_AX = fetch_data_word(offset); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa2 +****************************************************************************/ +static void +x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x],AL\n", offset); + TRACE_AND_STEP(); + store_data_byte(offset, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa3 +****************************************************************************/ +static void +x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); + } + else { + DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long(offset, M.x86.R_EAX); + } + else { + store_data_word(offset, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa4 +****************************************************************************/ +static void +x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 val; + u32 count; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("MOVS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + val = fetch_data_byte(M.x86.R_SI); + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa5 +****************************************************************************/ +static void +x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val; + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOVS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } + else { + DECODE_PRINTF("MOVS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long(M.x86.R_SI); + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); + } + else { + val = fetch_data_word(M.x86.R_SI); + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16) val); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa6 +****************************************************************************/ +static void +x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val1, val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("CMPS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } + else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } + else { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa7 +****************************************************************************/ +static void +x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val1, val2; + int inc; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CMPS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } + else { + DECODE_PRINTF("CMPS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } + else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16) val1, (u16) val2); + } + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } + else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } + else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16) val1, (u16) val2); + } + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } + else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } + else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16) val1, (u16) val2); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa8 +****************************************************************************/ +static void +x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + int imm; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\tAL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%04x\n", imm); + TRACE_AND_STEP(); + test_byte(M.x86.R_AL, (u8) imm); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa9 +****************************************************************************/ +static void +x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("TEST\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("TEST\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + test_long(M.x86.R_EAX, srcval); + } + else { + test_word(M.x86.R_AX, (u16) srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaa +****************************************************************************/ +static void +x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("STOS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + else { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xab +****************************************************************************/ +static void +x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("STOS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } + else { + DECODE_PRINTF("STOS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); + } + else { + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); + } + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xac +****************************************************************************/ +static void +x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("LODS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + else { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_SI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xad +****************************************************************************/ +static void +x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("LODS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } + else { + DECODE_PRINTF("LODS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(M.x86.R_SI); + } + else { + M.x86.R_AX = fetch_data_word(M.x86.R_SI); + } + M.x86.R_SI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xae +****************************************************************************/ +static void +x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("SCAS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } + else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } + else { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaf +****************************************************************************/ +static void +x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 val; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("SCAS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } + else { + DECODE_PRINTF("SCAS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } + else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16) val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } + else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } + else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16) val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } + else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } + else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16) val); + } + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb0 +****************************************************************************/ +static void +x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tAL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_AL = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb1 +****************************************************************************/ +static void +x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tCL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_CL = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb2 +****************************************************************************/ +static void +x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tDL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_DL = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb3 +****************************************************************************/ +static void +x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tBL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_BL = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb4 +****************************************************************************/ +static void +x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tAH,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_AH = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb5 +****************************************************************************/ +static void +x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tCH,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_CH = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb6 +****************************************************************************/ +static void +x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tDH,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_DH = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb7 +****************************************************************************/ +static void +x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tBH,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_BH = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb8 +****************************************************************************/ +static void +x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tEAX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = srcval; + } + else { + M.x86.R_AX = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb9 +****************************************************************************/ +static void +x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tECX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tCX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = srcval; + } + else { + M.x86.R_CX = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xba +****************************************************************************/ +static void +x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tEDX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tDX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDX = srcval; + } + else { + M.x86.R_DX = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xbb +****************************************************************************/ +static void +x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tEBX,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tBX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBX = srcval; + } + else { + M.x86.R_BX = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xbc +****************************************************************************/ +static void +x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tESP,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tSP,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESP = srcval; + } + else { + M.x86.R_SP = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xbd +****************************************************************************/ +static void +x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tEBP,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tBP,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EBP = srcval; + } + else { + M.x86.R_BP = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xbe +****************************************************************************/ +static void +x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tESI,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tSI,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ESI = srcval; + } + else { + M.x86.R_SI = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xbf +****************************************************************************/ +static void +x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOV\tEDI,"); + srcval = fetch_long_imm(); + } + else { + DECODE_PRINTF("MOV\tDI,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = srcval; + } + else { + M.x86.R_DI = (u16) srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* used by opcodes c0, d0, and d2. */ +static u8(*opcD0_byte_operation[]) (u8 d, u8 s) = { + rol_byte, ror_byte, rcl_byte, rcr_byte, shl_byte, shr_byte, shl_byte, /* sal_byte === shl_byte by definition */ +sar_byte,}; + +/**************************************************************************** +REMARKS: +Handles opcode 0xc0 +****************************************************************************/ +static void +x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* used by opcodes c1, d1, and d3. */ +static u16(*opcD1_word_operation[]) (u16 s, u8 d) = { + rol_word, ror_word, rcl_word, rcr_word, shl_word, shr_word, shl_word, /* sal_byte === shl_byte by definition */ +sar_word,}; + +/* used by opcodes c1, d1, and d3. */ +static u32(*opcD1_long_operation[]) (u32 s, u8 d) = { + rol_long, ror_long, rcl_long, rcr_long, shl_long, shr_long, shl_long, /* sal_byte === shl_byte by definition */ +sar_long,}; + +/**************************************************************************** +REMARKS: +Handles opcode 0xc1 +****************************************************************************/ +static void +x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm10_address(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc2 +****************************************************************************/ +static void +x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RET\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + RETURN_TRACE("RET", M.x86.saved_cs, M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc3 +****************************************************************************/ +static void +x86emuOp_ret_near(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RET\n"); + RETURN_TRACE("RET", M.x86.saved_cs, M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc4 +****************************************************************************/ +static void +x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LES\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); + break; + case 1: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); + break; + case 2: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); + break; + case 3: /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc5 +****************************************************************************/ +static void +x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LDS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); + break; + case 1: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); + break; + case 2: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); + break; + case 3: /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc6 +****************************************************************************/ +static void +x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); + HALT_SYS(); + } + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc7 +****************************************************************************/ +static void +x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } + else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } + else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } + else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm10_address(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + else { + u16 *destreg; + u16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc8 +****************************************************************************/ +static void +x86emuOp_enter(u8 X86EMU_UNUSED(op1)) +{ + u16 local, frame_pointer; + u8 nesting; + int i; + + START_OF_INSTR(); + local = fetch_word_imm(); + nesting = fetch_byte_imm(); + DECODE_PRINTF2("ENTER %x\n", local); + DECODE_PRINTF2(",%x\n", nesting); + TRACE_AND_STEP(); + push_word(M.x86.R_BP); + frame_pointer = M.x86.R_SP; + if (nesting > 0) { + for (i = 1; i < nesting; i++) { + M.x86.R_BP -= 2; + push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); + } + push_word(frame_pointer); + } + M.x86.R_BP = frame_pointer; + M.x86.R_SP = (u16) (M.x86.R_SP - local); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc9 +****************************************************************************/ +static void +x86emuOp_leave(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LEAVE\n"); + TRACE_AND_STEP(); + M.x86.R_SP = M.x86.R_BP; + M.x86.R_BP = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xca +****************************************************************************/ +static void +x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RETF\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + RETURN_TRACE("RETF", M.x86.saved_cs, M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcb +****************************************************************************/ +static void +x86emuOp_ret_far(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RETF\n"); + RETURN_TRACE("RETF", M.x86.saved_cs, M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcc +****************************************************************************/ +static void +x86emuOp_int3(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("INT 3\n"); + TRACE_AND_STEP(); + if (_X86EMU_intrTab[3]) { + (*_X86EMU_intrTab[3]) (3); + } + else { + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(3 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(3 * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcd +****************************************************************************/ +static void +x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 intnum; + + START_OF_INSTR(); + DECODE_PRINTF("INT\t"); + intnum = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", intnum); + TRACE_AND_STEP(); + if (_X86EMU_intrTab[intnum]) { + (*_X86EMU_intrTab[intnum]) (intnum); + } + else { + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intnum * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intnum * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xce +****************************************************************************/ +static void +x86emuOp_into(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("INTO\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_OF)) { + if (_X86EMU_intrTab[4]) { + (*_X86EMU_intrTab[4]) (4); + } + else { + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(4 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(4 * 4); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcf +****************************************************************************/ +static void +x86emuOp_iret(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IRET\n"); + + TRACE_AND_STEP(); + + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + M.x86.R_FLG = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd0 +****************************************************************************/ +static void +x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, 1); + *destreg = destval; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd1 +****************************************************************************/ +static void +x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (*destreg, 1); + *destreg = destval; + } + else { + u16 destval; + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (*destreg, 1); + *destreg = destval; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd2 +****************************************************************************/ +static void +x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd3 +****************************************************************************/ +static void +x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd4 +****************************************************************************/ +static void +x86emuOp_aam(u8 X86EMU_UNUSED(op1)) +{ + u8 a; + + START_OF_INSTR(); + DECODE_PRINTF("AAM\n"); + a = fetch_byte_imm(); /* this is a stupid encoding. */ + if (a != 10) { + /* fix: add base decoding + aam_word(u8 val, int base a) */ + DECODE_PRINTF("ERROR DECODING AAM\n"); + TRACE_REGS(); + HALT_SYS(); + } + TRACE_AND_STEP(); + /* note the type change here --- returning AL and AH in AX. */ + M.x86.R_AX = aam_word(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd5 +****************************************************************************/ +static void +x86emuOp_aad(u8 X86EMU_UNUSED(op1)) +{ + u8 a; + + START_OF_INSTR(); + DECODE_PRINTF("AAD\n"); + a = fetch_byte_imm(); + if (a != 10) { + /* fix: add base decoding + aad_word(u16 val, int base a) */ + DECODE_PRINTF("ERROR DECODING AAM\n"); + TRACE_REGS(); + HALT_SYS(); + } + TRACE_AND_STEP(); + M.x86.R_AX = aad_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* opcode 0xd6 ILLEGAL OPCODE */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xd7 +****************************************************************************/ +static void +x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) +{ + u16 addr; + + START_OF_INSTR(); + DECODE_PRINTF("XLAT\n"); + TRACE_AND_STEP(); + addr = (u16) (M.x86.R_BX + (u8) M.x86.R_AL); + M.x86.R_AL = fetch_data_byte(addr); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* instuctions D8 .. DF are in i87_ops.c */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xe0 +****************************************************************************/ +static void +x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPNE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe1 +****************************************************************************/ +static void +x86emuOp_loope(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe2 +****************************************************************************/ +static void +x86emuOp_loop(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOP\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0) + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe3 +****************************************************************************/ +static void +x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JCXZ\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (M.x86.R_CX == 0) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe4 +****************************************************************************/ +static void +x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb) (port); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe5 +****************************************************************************/ +static void +x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("EAX,%x\n", port); + } + else { + DECODE_PRINTF2("AX,%x\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl) (port); + } + else { + M.x86.R_AX = (*sys_inw) (port); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe6 +****************************************************************************/ +static void +x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + (*sys_outb) (port, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe7 +****************************************************************************/ +static void +x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("%x,EAX\n", port); + } + else { + DECODE_PRINTF2("%x,AX\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl) (port, M.x86.R_EAX); + } + else { + (*sys_outw) (port, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe8 +****************************************************************************/ +static void +x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 ip16; + s32 ip32; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip32 = (s32) fetch_long_imm(); + ip32 += (s16) M.x86.R_IP; /* CHECK SIGN */ + DECODE_PRINTF2("%04x\n", (u16) ip32); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip32, ""); + } + else { + ip16 = (s16) fetch_word_imm(); + ip16 += (s16) M.x86.R_IP; /* CHECK SIGN */ + DECODE_PRINTF2("%04x\n", (u16) ip16); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip16, ""); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EIP); + M.x86.R_EIP = ip32 & 0xffff; + } + else { + push_word(M.x86.R_IP); + M.x86.R_EIP = ip16; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe9 +****************************************************************************/ +static void +x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip = (u32) fetch_long_imm(); + ip += (u32) M.x86.R_EIP; + DECODE_PRINTF2("%08x\n", (u32) ip); + TRACE_AND_STEP(); + M.x86.R_EIP = (u32) ip; + } + else { + ip = (s16) fetch_word_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", (u16) ip); + TRACE_AND_STEP(); + M.x86.R_IP = (u16) ip; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xea +****************************************************************************/ +static void +x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 cs; + u32 ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\tFAR "); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip = fetch_long_imm(); + } + else { + ip = fetch_word_imm(); + } + cs = fetch_word_imm(); + DECODE_PRINTF2("%04x:", cs); + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_EIP = ip & 0xffff; + M.x86.R_CS = cs; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xeb +****************************************************************************/ +static void +x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + offset = (s8) fetch_byte_imm(); + target = (u16) (M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xec +****************************************************************************/ +static void +x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IN\tAL,DX\n"); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb) (M.x86.R_DX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xed +****************************************************************************/ +static void +x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("IN\tEAX,DX\n"); + } + else { + DECODE_PRINTF("IN\tAX,DX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl) (M.x86.R_DX); + } + else { + M.x86.R_AX = (*sys_inw) (M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xee +****************************************************************************/ +static void +x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUT\tDX,AL\n"); + TRACE_AND_STEP(); + (*sys_outb) (M.x86.R_DX, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xef +****************************************************************************/ +static void +x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUT\tDX,EAX\n"); + } + else { + DECODE_PRINTF("OUT\tDX,AX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl) (M.x86.R_DX, M.x86.R_EAX); + } + else { + (*sys_outw) (M.x86.R_DX, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf0 +****************************************************************************/ +static void +x86emuOp_lock(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LOCK:\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0xf1 ILLEGAL OPERATION */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xf2 +****************************************************************************/ +static void +x86emuOp_repne(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPNE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPNE; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf3 +****************************************************************************/ +static void +x86emuOp_repe(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPE; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf4 +****************************************************************************/ +static void +x86emuOp_halt(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("HALT\n"); + TRACE_AND_STEP(); + HALT_SYS(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf5 +****************************************************************************/ +static void +x86emuOp_cmc(u8 X86EMU_UNUSED(op1)) +{ + /* complement the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CMC\n"); + TRACE_AND_STEP(); + TOGGLE_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf6 +****************************************************************************/ +static void +x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval, srcval; + + /* long, drawn out code follows. Double switch for a total + of 32 cases. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: /* mod=00 */ + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF("TEST\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("NOT\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("NEG\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("MUL\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("IMUL\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("DIV\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + div_byte(destval); + break; + case 7: + DECODE_PRINTF("IDIV\tBYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + break; /* end mod==00 */ + case 1: /* mod=01 */ + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF("TEST\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("NOT\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("NEG\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("MUL\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("IMUL\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("DIV\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + div_byte(destval); + break; + case 7: + DECODE_PRINTF("IDIV\tBYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + break; /* end mod==01 */ + case 2: /* mod=10 */ + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF("TEST\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("NOT\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("NEG\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("MUL\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("IMUL\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("DIV\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + div_byte(destval); + break; + case 7: + DECODE_PRINTF("IDIV\tBYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + break; /* end mod==10 */ + case 3: /* mod=11 */ + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF("TEST\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("NOT\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_byte(*destreg); + break; + case 3: + DECODE_PRINTF("NEG\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_byte(*destreg); + break; + case 4: + DECODE_PRINTF("MUL\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("IMUL\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(*destreg); + break; + case 6: + DECODE_PRINTF("DIV\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(*destreg); + break; + case 7: + DECODE_PRINTF("IDIV\t"); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(*destreg); + break; + } + break; /* end mod==11 */ + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf7 +****************************************************************************/ +static void +x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* long, drawn out code follows. Double switch for a total + of 32 cases. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: /* mod=00 */ + switch (rh) { + case 0: /* test word imm */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("TEST\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + test_long(destval, srcval); + } + else { + u16 destval, srcval; + + DECODE_PRINTF("TEST\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + test_word(destval, srcval); + } + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NOT\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NOT\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + } + break; + case 3: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NEG\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NEG\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + } + break; + case 4: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("MUL\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + mul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("MUL\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + mul_word(destval); + } + break; + case 5: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IMUL\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + imul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IMUL\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + imul_word(destval); + } + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DIV\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + div_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("DIV\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + div_word(destval); + } + break; + case 7: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IDIV\tDWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + idiv_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IDIV\tWORD PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + idiv_word(destval); + } + break; + } + break; /* end mod==00 */ + case 1: /* mod=01 */ + switch (rh) { + case 0: /* test word imm */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("TEST\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + test_long(destval, srcval); + } + else { + u16 destval, srcval; + + DECODE_PRINTF("TEST\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + test_word(destval, srcval); + } + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NOT\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NOT\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + } + break; + case 3: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NEG\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NEG\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + } + break; + case 4: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("MUL\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + mul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("MUL\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + mul_word(destval); + } + break; + case 5: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IMUL\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + imul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IMUL\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + imul_word(destval); + } + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DIV\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + div_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("DIV\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + div_word(destval); + } + break; + case 7: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IDIV\tDWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + idiv_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IDIV\tWORD PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + idiv_word(destval); + } + break; + } + break; /* end mod==01 */ + case 2: /* mod=10 */ + switch (rh) { + case 0: /* test word imm */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("TEST\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + test_long(destval, srcval); + } + else { + u16 destval, srcval; + + DECODE_PRINTF("TEST\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + test_word(destval, srcval); + } + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NOT\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NOT\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + } + break; + case 3: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("NEG\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + DECODE_PRINTF("NEG\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + } + break; + case 4: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("MUL\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + mul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("MUL\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + mul_word(destval); + } + break; + case 5: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IMUL\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + imul_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IMUL\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + imul_word(destval); + } + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DIV\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + div_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("DIV\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + div_word(destval); + } + break; + case 7: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("IDIV\tDWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + idiv_long(destval); + } + else { + u16 destval; + + DECODE_PRINTF("IDIV\tWORD PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + idiv_word(destval); + } + break; + } + break; /* end mod==10 */ + case 3: /* mod=11 */ + switch (rh) { + case 0: /* test word imm */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + DECODE_PRINTF("TEST\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(*destreg, srcval); + } + else { + u16 *destreg; + u16 srcval; + + DECODE_PRINTF("TEST\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(*destreg, srcval); + } + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("NOT\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_long(*destreg); + } + else { + u16 *destreg; + + DECODE_PRINTF("NOT\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_word(*destreg); + } + break; + case 3: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("NEG\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_long(*destreg); + } + else { + u16 *destreg; + + DECODE_PRINTF("NEG\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_word(*destreg); + } + break; + case 4: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("MUL\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(*destreg); /*!!! */ + } + else { + u16 *destreg; + + DECODE_PRINTF("MUL\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(*destreg); /*!!! */ + } + break; + case 5: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("IMUL\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(*destreg); + } + else { + u16 *destreg; + + DECODE_PRINTF("IMUL\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(*destreg); + } + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("DIV\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(*destreg); + } + else { + u16 *destreg; + + DECODE_PRINTF("DIV\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(*destreg); + } + break; + case 7: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + DECODE_PRINTF("IDIV\t"); + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(*destreg); + } + else { + u16 *destreg; + + DECODE_PRINTF("IDIV\t"); + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(*destreg); + } + break; + } + break; /* end mod==11 */ + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf8 +****************************************************************************/ +static void +x86emuOp_clc(u8 X86EMU_UNUSED(op1)) +{ + /* clear the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CLC\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf9 +****************************************************************************/ +static void +x86emuOp_stc(u8 X86EMU_UNUSED(op1)) +{ + /* set the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("STC\n"); + TRACE_AND_STEP(); + SET_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfa +****************************************************************************/ +static void +x86emuOp_cli(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLI\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfb +****************************************************************************/ +static void +x86emuOp_sti(u8 X86EMU_UNUSED(op1)) +{ + /* enable interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STI\n"); + TRACE_AND_STEP(); + SET_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfc +****************************************************************************/ +static void +x86emuOp_cld(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLD\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfd +****************************************************************************/ +static void +x86emuOp_std(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STD\n"); + TRACE_AND_STEP(); + SET_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfe +****************************************************************************/ +static void +x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u8 destval; + uint destoffset; + u8 *destreg; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("INC\t"); + break; + case 1: + DECODE_PRINTF("DEC\t"); + break; + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); + HALT_SYS(); + break; + } + } +#endif + switch (mod) { + case 0: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: /* inc word ptr ... */ + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = inc_byte(destval); + store_data_byte(destoffset, destval); + break; + case 1: /* dec word ptr ... */ + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = dec_byte(destval); + store_data_byte(destoffset, destval); + break; + } + break; + case 1: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = inc_byte(destval); + store_data_byte(destoffset, destval); + break; + case 1: + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = dec_byte(destval); + store_data_byte(destoffset, destval); + break; + } + break; + case 2: + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = inc_byte(destval); + store_data_byte(destoffset, destval); + break; + case 1: + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = dec_byte(destval); + store_data_byte(destoffset, destval); + break; + } + break; + case 3: + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: + TRACE_AND_STEP(); + *destreg = inc_byte(*destreg); + break; + case 1: + TRACE_AND_STEP(); + *destreg = dec_byte(*destreg); + break; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xff +****************************************************************************/ +static void +x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + uint destoffset = 0; + u16 *destreg; + u16 destval, destval2; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tDWORD PTR "); + } + else { + DECODE_PRINTF("INC\tWORD PTR "); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tDWORD PTR "); + } + else { + DECODE_PRINTF("DEC\tWORD PTR "); + } + break; + case 2: + DECODE_PRINTF("CALL\t"); + break; + case 3: + DECODE_PRINTF("CALL\tFAR "); + break; + case 4: + DECODE_PRINTF("JMP\t"); + break; + case 5: + DECODE_PRINTF("JMP\tFAR "); + break; + case 6: + DECODE_PRINTF("PUSH\t"); + break; + case 7: + DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); + HALT_SYS(); + break; + } + } +#endif + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: /* inc word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = inc_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: /* dec word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = dec_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = inc_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = dec_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = inc_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = dec_long(destval); + store_data_long(destoffset, destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval); + } + else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } + break; + case 3: + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_long(*destreg); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_word(*destreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_long(*destreg); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_word(*destreg); + } + break; + case 2: /* call word ptr ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = *destreg; + break; + case 3: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + + case 4: /* jmp ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + M.x86.R_IP = (u16) (*destreg); + break; + case 5: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*destreg); + } + else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*destreg); + } + break; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Single byte operation code table: + **************************************************************************/ +void (*x86emu_optab[256]) (u8) = { +/* 0x00 */ x86emuOp_add_byte_RM_R, +/* 0x01 */ x86emuOp_add_word_RM_R, +/* 0x02 */ x86emuOp_add_byte_R_RM, +/* 0x03 */ x86emuOp_add_word_R_RM, +/* 0x04 */ x86emuOp_add_byte_AL_IMM, +/* 0x05 */ x86emuOp_add_word_AX_IMM, +/* 0x06 */ x86emuOp_push_ES, +/* 0x07 */ x86emuOp_pop_ES, +/* 0x08 */ x86emuOp_or_byte_RM_R, +/* 0x09 */ x86emuOp_or_word_RM_R, +/* 0x0a */ x86emuOp_or_byte_R_RM, +/* 0x0b */ x86emuOp_or_word_R_RM, +/* 0x0c */ x86emuOp_or_byte_AL_IMM, +/* 0x0d */ x86emuOp_or_word_AX_IMM, +/* 0x0e */ x86emuOp_push_CS, +/* 0x0f */ x86emuOp_two_byte, +/* 0x10 */ x86emuOp_adc_byte_RM_R, +/* 0x11 */ x86emuOp_adc_word_RM_R, +/* 0x12 */ x86emuOp_adc_byte_R_RM, +/* 0x13 */ x86emuOp_adc_word_R_RM, +/* 0x14 */ x86emuOp_adc_byte_AL_IMM, +/* 0x15 */ x86emuOp_adc_word_AX_IMM, +/* 0x16 */ x86emuOp_push_SS, +/* 0x17 */ x86emuOp_pop_SS, +/* 0x18 */ x86emuOp_sbb_byte_RM_R, +/* 0x19 */ x86emuOp_sbb_word_RM_R, +/* 0x1a */ x86emuOp_sbb_byte_R_RM, +/* 0x1b */ x86emuOp_sbb_word_R_RM, +/* 0x1c */ x86emuOp_sbb_byte_AL_IMM, +/* 0x1d */ x86emuOp_sbb_word_AX_IMM, +/* 0x1e */ x86emuOp_push_DS, +/* 0x1f */ x86emuOp_pop_DS, +/* 0x20 */ x86emuOp_and_byte_RM_R, +/* 0x21 */ x86emuOp_and_word_RM_R, +/* 0x22 */ x86emuOp_and_byte_R_RM, +/* 0x23 */ x86emuOp_and_word_R_RM, +/* 0x24 */ x86emuOp_and_byte_AL_IMM, +/* 0x25 */ x86emuOp_and_word_AX_IMM, +/* 0x26 */ x86emuOp_segovr_ES, +/* 0x27 */ x86emuOp_daa, +/* 0x28 */ x86emuOp_sub_byte_RM_R, +/* 0x29 */ x86emuOp_sub_word_RM_R, +/* 0x2a */ x86emuOp_sub_byte_R_RM, +/* 0x2b */ x86emuOp_sub_word_R_RM, +/* 0x2c */ x86emuOp_sub_byte_AL_IMM, +/* 0x2d */ x86emuOp_sub_word_AX_IMM, +/* 0x2e */ x86emuOp_segovr_CS, +/* 0x2f */ x86emuOp_das, +/* 0x30 */ x86emuOp_xor_byte_RM_R, +/* 0x31 */ x86emuOp_xor_word_RM_R, +/* 0x32 */ x86emuOp_xor_byte_R_RM, +/* 0x33 */ x86emuOp_xor_word_R_RM, +/* 0x34 */ x86emuOp_xor_byte_AL_IMM, +/* 0x35 */ x86emuOp_xor_word_AX_IMM, +/* 0x36 */ x86emuOp_segovr_SS, +/* 0x37 */ x86emuOp_aaa, +/* 0x38 */ x86emuOp_cmp_byte_RM_R, +/* 0x39 */ x86emuOp_cmp_word_RM_R, +/* 0x3a */ x86emuOp_cmp_byte_R_RM, +/* 0x3b */ x86emuOp_cmp_word_R_RM, +/* 0x3c */ x86emuOp_cmp_byte_AL_IMM, +/* 0x3d */ x86emuOp_cmp_word_AX_IMM, +/* 0x3e */ x86emuOp_segovr_DS, +/* 0x3f */ x86emuOp_aas, +/* 0x40 */ x86emuOp_inc_AX, +/* 0x41 */ x86emuOp_inc_CX, +/* 0x42 */ x86emuOp_inc_DX, +/* 0x43 */ x86emuOp_inc_BX, +/* 0x44 */ x86emuOp_inc_SP, +/* 0x45 */ x86emuOp_inc_BP, +/* 0x46 */ x86emuOp_inc_SI, +/* 0x47 */ x86emuOp_inc_DI, +/* 0x48 */ x86emuOp_dec_AX, +/* 0x49 */ x86emuOp_dec_CX, +/* 0x4a */ x86emuOp_dec_DX, +/* 0x4b */ x86emuOp_dec_BX, +/* 0x4c */ x86emuOp_dec_SP, +/* 0x4d */ x86emuOp_dec_BP, +/* 0x4e */ x86emuOp_dec_SI, +/* 0x4f */ x86emuOp_dec_DI, +/* 0x50 */ x86emuOp_push_AX, +/* 0x51 */ x86emuOp_push_CX, +/* 0x52 */ x86emuOp_push_DX, +/* 0x53 */ x86emuOp_push_BX, +/* 0x54 */ x86emuOp_push_SP, +/* 0x55 */ x86emuOp_push_BP, +/* 0x56 */ x86emuOp_push_SI, +/* 0x57 */ x86emuOp_push_DI, +/* 0x58 */ x86emuOp_pop_AX, +/* 0x59 */ x86emuOp_pop_CX, +/* 0x5a */ x86emuOp_pop_DX, +/* 0x5b */ x86emuOp_pop_BX, +/* 0x5c */ x86emuOp_pop_SP, +/* 0x5d */ x86emuOp_pop_BP, +/* 0x5e */ x86emuOp_pop_SI, +/* 0x5f */ x86emuOp_pop_DI, +/* 0x60 */ x86emuOp_push_all, +/* 0x61 */ x86emuOp_pop_all, + /* 0x62 */ x86emuOp_illegal_op, + /* bound */ + /* 0x63 */ x86emuOp_illegal_op, + /* arpl */ +/* 0x64 */ x86emuOp_segovr_FS, +/* 0x65 */ x86emuOp_segovr_GS, +/* 0x66 */ x86emuOp_prefix_data, +/* 0x67 */ x86emuOp_prefix_addr, +/* 0x68 */ x86emuOp_push_word_IMM, +/* 0x69 */ x86emuOp_imul_word_IMM, +/* 0x6a */ x86emuOp_push_byte_IMM, +/* 0x6b */ x86emuOp_imul_byte_IMM, +/* 0x6c */ x86emuOp_ins_byte, +/* 0x6d */ x86emuOp_ins_word, +/* 0x6e */ x86emuOp_outs_byte, +/* 0x6f */ x86emuOp_outs_word, +/* 0x70 */ x86emuOp_jump_near_O, +/* 0x71 */ x86emuOp_jump_near_NO, +/* 0x72 */ x86emuOp_jump_near_B, +/* 0x73 */ x86emuOp_jump_near_NB, +/* 0x74 */ x86emuOp_jump_near_Z, +/* 0x75 */ x86emuOp_jump_near_NZ, +/* 0x76 */ x86emuOp_jump_near_BE, +/* 0x77 */ x86emuOp_jump_near_NBE, +/* 0x78 */ x86emuOp_jump_near_S, +/* 0x79 */ x86emuOp_jump_near_NS, +/* 0x7a */ x86emuOp_jump_near_P, +/* 0x7b */ x86emuOp_jump_near_NP, +/* 0x7c */ x86emuOp_jump_near_L, +/* 0x7d */ x86emuOp_jump_near_NL, +/* 0x7e */ x86emuOp_jump_near_LE, +/* 0x7f */ x86emuOp_jump_near_NLE, +/* 0x80 */ x86emuOp_opc80_byte_RM_IMM, +/* 0x81 */ x86emuOp_opc81_word_RM_IMM, +/* 0x82 */ x86emuOp_opc82_byte_RM_IMM, +/* 0x83 */ x86emuOp_opc83_word_RM_IMM, +/* 0x84 */ x86emuOp_test_byte_RM_R, +/* 0x85 */ x86emuOp_test_word_RM_R, +/* 0x86 */ x86emuOp_xchg_byte_RM_R, +/* 0x87 */ x86emuOp_xchg_word_RM_R, +/* 0x88 */ x86emuOp_mov_byte_RM_R, +/* 0x89 */ x86emuOp_mov_word_RM_R, +/* 0x8a */ x86emuOp_mov_byte_R_RM, +/* 0x8b */ x86emuOp_mov_word_R_RM, +/* 0x8c */ x86emuOp_mov_word_RM_SR, +/* 0x8d */ x86emuOp_lea_word_R_M, +/* 0x8e */ x86emuOp_mov_word_SR_RM, +/* 0x8f */ x86emuOp_pop_RM, +/* 0x90 */ x86emuOp_nop, +/* 0x91 */ x86emuOp_xchg_word_AX_CX, +/* 0x92 */ x86emuOp_xchg_word_AX_DX, +/* 0x93 */ x86emuOp_xchg_word_AX_BX, +/* 0x94 */ x86emuOp_xchg_word_AX_SP, +/* 0x95 */ x86emuOp_xchg_word_AX_BP, +/* 0x96 */ x86emuOp_xchg_word_AX_SI, +/* 0x97 */ x86emuOp_xchg_word_AX_DI, +/* 0x98 */ x86emuOp_cbw, +/* 0x99 */ x86emuOp_cwd, +/* 0x9a */ x86emuOp_call_far_IMM, +/* 0x9b */ x86emuOp_wait, +/* 0x9c */ x86emuOp_pushf_word, +/* 0x9d */ x86emuOp_popf_word, +/* 0x9e */ x86emuOp_sahf, +/* 0x9f */ x86emuOp_lahf, +/* 0xa0 */ x86emuOp_mov_AL_M_IMM, +/* 0xa1 */ x86emuOp_mov_AX_M_IMM, +/* 0xa2 */ x86emuOp_mov_M_AL_IMM, +/* 0xa3 */ x86emuOp_mov_M_AX_IMM, +/* 0xa4 */ x86emuOp_movs_byte, +/* 0xa5 */ x86emuOp_movs_word, +/* 0xa6 */ x86emuOp_cmps_byte, +/* 0xa7 */ x86emuOp_cmps_word, +/* 0xa8 */ x86emuOp_test_AL_IMM, +/* 0xa9 */ x86emuOp_test_AX_IMM, +/* 0xaa */ x86emuOp_stos_byte, +/* 0xab */ x86emuOp_stos_word, +/* 0xac */ x86emuOp_lods_byte, +/* 0xad */ x86emuOp_lods_word, +/* 0xac */ x86emuOp_scas_byte, +/* 0xad */ x86emuOp_scas_word, +/* 0xb0 */ x86emuOp_mov_byte_AL_IMM, +/* 0xb1 */ x86emuOp_mov_byte_CL_IMM, +/* 0xb2 */ x86emuOp_mov_byte_DL_IMM, +/* 0xb3 */ x86emuOp_mov_byte_BL_IMM, +/* 0xb4 */ x86emuOp_mov_byte_AH_IMM, +/* 0xb5 */ x86emuOp_mov_byte_CH_IMM, +/* 0xb6 */ x86emuOp_mov_byte_DH_IMM, +/* 0xb7 */ x86emuOp_mov_byte_BH_IMM, +/* 0xb8 */ x86emuOp_mov_word_AX_IMM, +/* 0xb9 */ x86emuOp_mov_word_CX_IMM, +/* 0xba */ x86emuOp_mov_word_DX_IMM, +/* 0xbb */ x86emuOp_mov_word_BX_IMM, +/* 0xbc */ x86emuOp_mov_word_SP_IMM, +/* 0xbd */ x86emuOp_mov_word_BP_IMM, +/* 0xbe */ x86emuOp_mov_word_SI_IMM, +/* 0xbf */ x86emuOp_mov_word_DI_IMM, +/* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM, +/* 0xc1 */ x86emuOp_opcC1_word_RM_MEM, +/* 0xc2 */ x86emuOp_ret_near_IMM, +/* 0xc3 */ x86emuOp_ret_near, +/* 0xc4 */ x86emuOp_les_R_IMM, +/* 0xc5 */ x86emuOp_lds_R_IMM, +/* 0xc6 */ x86emuOp_mov_byte_RM_IMM, +/* 0xc7 */ x86emuOp_mov_word_RM_IMM, +/* 0xc8 */ x86emuOp_enter, +/* 0xc9 */ x86emuOp_leave, +/* 0xca */ x86emuOp_ret_far_IMM, +/* 0xcb */ x86emuOp_ret_far, +/* 0xcc */ x86emuOp_int3, +/* 0xcd */ x86emuOp_int_IMM, +/* 0xce */ x86emuOp_into, +/* 0xcf */ x86emuOp_iret, +/* 0xd0 */ x86emuOp_opcD0_byte_RM_1, +/* 0xd1 */ x86emuOp_opcD1_word_RM_1, +/* 0xd2 */ x86emuOp_opcD2_byte_RM_CL, +/* 0xd3 */ x86emuOp_opcD3_word_RM_CL, +/* 0xd4 */ x86emuOp_aam, +/* 0xd5 */ x86emuOp_aad, + /* 0xd6 */ x86emuOp_illegal_op, + /* Undocumented SETALC instruction */ +/* 0xd7 */ x86emuOp_xlat, +/* 0xd8 */ x86emuOp_esc_coprocess_d8, +/* 0xd9 */ x86emuOp_esc_coprocess_d9, +/* 0xda */ x86emuOp_esc_coprocess_da, +/* 0xdb */ x86emuOp_esc_coprocess_db, +/* 0xdc */ x86emuOp_esc_coprocess_dc, +/* 0xdd */ x86emuOp_esc_coprocess_dd, +/* 0xde */ x86emuOp_esc_coprocess_de, +/* 0xdf */ x86emuOp_esc_coprocess_df, +/* 0xe0 */ x86emuOp_loopne, +/* 0xe1 */ x86emuOp_loope, +/* 0xe2 */ x86emuOp_loop, +/* 0xe3 */ x86emuOp_jcxz, +/* 0xe4 */ x86emuOp_in_byte_AL_IMM, +/* 0xe5 */ x86emuOp_in_word_AX_IMM, +/* 0xe6 */ x86emuOp_out_byte_IMM_AL, +/* 0xe7 */ x86emuOp_out_word_IMM_AX, +/* 0xe8 */ x86emuOp_call_near_IMM, +/* 0xe9 */ x86emuOp_jump_near_IMM, +/* 0xea */ x86emuOp_jump_far_IMM, +/* 0xeb */ x86emuOp_jump_byte_IMM, +/* 0xec */ x86emuOp_in_byte_AL_DX, +/* 0xed */ x86emuOp_in_word_AX_DX, +/* 0xee */ x86emuOp_out_byte_DX_AL, +/* 0xef */ x86emuOp_out_word_DX_AX, +/* 0xf0 */ x86emuOp_lock, +/* 0xf1 */ x86emuOp_illegal_op, +/* 0xf2 */ x86emuOp_repne, +/* 0xf3 */ x86emuOp_repe, +/* 0xf4 */ x86emuOp_halt, +/* 0xf5 */ x86emuOp_cmc, +/* 0xf6 */ x86emuOp_opcF6_byte_RM, +/* 0xf7 */ x86emuOp_opcF7_word_RM, +/* 0xf8 */ x86emuOp_clc, +/* 0xf9 */ x86emuOp_stc, +/* 0xfa */ x86emuOp_cli, +/* 0xfb */ x86emuOp_sti, +/* 0xfc */ x86emuOp_cld, +/* 0xfd */ x86emuOp_std, +/* 0xfe */ x86emuOp_opcFE_byte_RM, +/* 0xff */ x86emuOp_opcFF_word_RM, +}; diff --git a/src/add-ons/kernel/generic/bios/x86emu/ops2.c b/src/add-ons/kernel/generic/bios/x86emu/ops2.c new file mode 100644 index 0000000000..5ed2bf68d3 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/ops2.c @@ -0,0 +1,3008 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 extended two-byte processor +* instructions. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +#undef bswap_32 +#define bswap_32(x) (((x & 0xff000000) >> 24) | \ + ((x & 0x00ff0000) >> 8) | \ + ((x & 0x0000ff00) << 8) | \ + ((x & 0x000000ff) << 24)) + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +static void +x86emuOp2_illegal_op(u8 op2) +{ + START_OF_INSTR(); + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP - 2, op2); + HALT_SYS(); + END_OF_INSTR(); +} + +#define xorl(a,b) ((a) && !(b)) || (!(a) && (b)) + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x31 +****************************************************************************/ +static void +x86emuOp2_rdtsc(u8 X86EMU_UNUSED(op2)) +{ +#ifdef __HAS_LONG_LONG__ + static u64 counter = 0; +#else + static u32 counter = 0; +#endif + + counter += 0x10000; + + /* read timestamp counter */ + /* + * Note that instead of actually trying to accurately measure this, we just + * increase the counter by a fixed amount every time we hit one of these + * instructions. Feel free to come up with a better method. + */ + START_OF_INSTR(); + DECODE_PRINTF("RDTSC\n"); + TRACE_AND_STEP(); +#ifdef __HAS_LONG_LONG__ + M.x86.R_EAX = counter & 0xffffffff; + M.x86.R_EDX = counter >> 32; +#else + M.x86.R_EAX = counter; + M.x86.R_EDX = 0; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x80-0x8F +****************************************************************************/ +static void +x86emuOp2_long_jump(u8 op2) +{ + s32 target; + const char *name = NULL; + int cond = 0; + + /* conditional jump to word offset. */ + START_OF_INSTR(); + switch (op2) { + case 0x80: + name = "JO\t"; + cond = ACCESS_FLAG(F_OF); + break; + case 0x81: + name = "JNO\t"; + cond = !ACCESS_FLAG(F_OF); + break; + case 0x82: + name = "JB\t"; + cond = ACCESS_FLAG(F_CF); + break; + case 0x83: + name = "JNB\t"; + cond = !ACCESS_FLAG(F_CF); + break; + case 0x84: + name = "JZ\t"; + cond = ACCESS_FLAG(F_ZF); + break; + case 0x85: + name = "JNZ\t"; + cond = !ACCESS_FLAG(F_ZF); + break; + case 0x86: + name = "JBE\t"; + cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x87: + name = "JNBE\t"; + cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x88: + name = "JS\t"; + cond = ACCESS_FLAG(F_SF); + break; + case 0x89: + name = "JNS\t"; + cond = !ACCESS_FLAG(F_SF); + break; + case 0x8a: + name = "JP\t"; + cond = ACCESS_FLAG(F_PF); + break; + case 0x8b: + name = "JNP\t"; + cond = !ACCESS_FLAG(F_PF); + break; + case 0x8c: + name = "JL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x8d: + name = "JNL\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF))); + break; + case 0x8e: + name = "JLE\t"; + cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + case 0x8f: + name = "JNLE\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + } + DECODE_PRINTF(name); + (void) name; + target = (s16) fetch_word_imm(); + target += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", target); + TRACE_AND_STEP(); + if (cond) + M.x86.R_IP = (u16) target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x90-0x9F +****************************************************************************/ +static void +x86emuOp2_set_byte(u8 op2) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg; + const char *name = NULL; + int cond = 0; + + START_OF_INSTR(); + switch (op2) { + case 0x90: + name = "SETO\t"; + cond = ACCESS_FLAG(F_OF); + break; + case 0x91: + name = "SETNO\t"; + cond = !ACCESS_FLAG(F_OF); + break; + case 0x92: + name = "SETB\t"; + cond = ACCESS_FLAG(F_CF); + break; + case 0x93: + name = "SETNB\t"; + cond = !ACCESS_FLAG(F_CF); + break; + case 0x94: + name = "SETZ\t"; + cond = ACCESS_FLAG(F_ZF); + break; + case 0x95: + name = "SETNZ\t"; + cond = !ACCESS_FLAG(F_ZF); + break; + case 0x96: + name = "SETBE\t"; + cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x97: + name = "SETNBE\t"; + cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x98: + name = "SETS\t"; + cond = ACCESS_FLAG(F_SF); + break; + case 0x99: + name = "SETNS\t"; + cond = !ACCESS_FLAG(F_SF); + break; + case 0x9a: + name = "SETP\t"; + cond = ACCESS_FLAG(F_PF); + break; + case 0x9b: + name = "SETNP\t"; + cond = !ACCESS_FLAG(F_PF); + break; + case 0x9c: + name = "SETL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9d: + name = "SETNL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9e: + name = "SETLE\t"; + cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + case 0x9f: + name = "SETNLE\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + } + DECODE_PRINTF(name); + (void) name; + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + break; + case 1: + destoffset = decode_rm01_address(rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + break; + case 2: + destoffset = decode_rm10_address(rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + break; + case 3: /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + TRACE_AND_STEP(); + *destreg = cond ? 0x01 : 0x00; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa0 +****************************************************************************/ +static void +x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tFS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_FS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa1 +****************************************************************************/ +static void +x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tFS\n"); + TRACE_AND_STEP(); + M.x86.R_FS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output +Handles opcode 0x0f,0xa2 +****************************************************************************/ +static void +x86emuOp2_cpuid(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("CPUID\n"); + TRACE_AND_STEP(); + cpuid(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa3 +****************************************************************************/ +static void +x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit, disp; + + START_OF_INSTR(); + DECODE_PRINTF("BT\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + else { + u16 srcval; + u16 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + else { + u16 srcval; + u16 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + else { + u16 srcval; + u16 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *shiftreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit), F_CF); + } + else { + u16 *srcreg, *shiftreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit), F_CF); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa4 +****************************************************************************/ +static void +x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg, *shiftreg, shift); + } + else { + u16 *destreg, *shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg, *shiftreg, shift); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa5 +****************************************************************************/ +static void +x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg, *shiftreg, M.x86.R_CL); + } + else { + u16 *destreg, *shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg, *shiftreg, M.x86.R_CL); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa8 +****************************************************************************/ +static void +x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tGS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_GS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa9 +****************************************************************************/ +static void +x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tGS\n"); + TRACE_AND_STEP(); + M.x86.R_GS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xab +****************************************************************************/ +static void +x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit, disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval | mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, srcval | mask); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval | mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, srcval | mask); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval | mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, srcval | mask); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg |= mask; + } + else { + u16 *srcreg, *shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg |= mask; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xac +****************************************************************************/ +static void +x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, shift); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, shift); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg, *shiftreg, shift); + } + else { + u16 *destreg, *shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg, *shiftreg, shift); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xad +****************************************************************************/ +static void +x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval, *shiftreg, M.x86.R_CL); + store_data_long(destoffset, destval); + } + else { + u16 destval; + u16 *shiftreg; + + destoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval, *shiftreg, M.x86.R_CL); + store_data_word(destoffset, destval); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg, *shiftreg, M.x86.R_CL); + } + else { + u16 *destreg, *shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg, *shiftreg, M.x86.R_CL); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xaf +****************************************************************************/ +static void +x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16) * destreg * (s16) srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16) * destreg * (s16) srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16) * destreg * (s16) srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + u32 res_lo, res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + TRACE_AND_STEP(); + imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) * srcreg); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32) res_lo; + } + else { + u16 *destreg, *srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + res = (s16) * destreg * (s16) * srcreg; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16) res; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb2 +****************************************************************************/ +static void +x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LSS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + break; + case 1: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + break; + case 2: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + break; + case 3: /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb3 +****************************************************************************/ +static void +x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit, disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval & ~mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval & ~mask)); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval & ~mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval & ~mask)); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval & ~mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval & ~mask)); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg &= ~mask; + } + else { + u16 *srcreg, *shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg &= ~mask; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb4 +****************************************************************************/ +static void +x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LFS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + break; + case 1: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + break; + case 2: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + break; + case 3: /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb5 +****************************************************************************/ +static void +x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LGS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + break; + case 1: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + break; + case 2: + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + break; + case 3: /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb6 +****************************************************************************/ +static void +x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb7 +****************************************************************************/ +static void +x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 1: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 2: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 3: /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xba +****************************************************************************/ +static void +x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (rh) { + case 4: + DECODE_PRINTF("BT\t"); + break; + case 5: + DECODE_PRINTF("BTS\t"); + break; + case 6: + DECODE_PRINTF("BTR\t"); + break; + case 7: + DECODE_PRINTF("BTC\t"); + break; + default: + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n", + M.x86.R_CS, M.x86.R_IP - 3, op2, (mod << 6) | (rh << 3) | rl); + HALT_SYS(); + } + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u8 shift; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + else { + u16 srcval, mask; + u8 shift; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u8 shift; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + else { + u16 srcval, mask; + u8 shift; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u8 shift; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + else { + u16 srcval, mask; + u8 shift; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 mask; + u8 shift; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } + else { + u16 *srcreg; + u16 mask; + u8 shift; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + TRACE_AND_STEP(); + bit = shift & 0xF; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbb +****************************************************************************/ +static void +x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit, disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval ^ mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval ^ mask)); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval ^ mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval ^ mask)); + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + u32 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16) * shiftreg >> 5; + srcval = fetch_data_long(srcoffset + disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_long(srcoffset + disp, srcval ^ mask); + } + else { + u16 srcval, mask; + u16 *shiftreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16) * shiftreg >> 4; + srcval = fetch_data_word(srcoffset + disp); + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask, F_CF); + store_data_word(srcoffset + disp, (u16) (srcval ^ mask)); + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg ^= mask; + } + else { + u16 *srcreg, *shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16) (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF); + *srcreg ^= mask; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbc +****************************************************************************/ +static void +x86emuOp2_bsf(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSF\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcval = *DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcval = *DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) + break; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbd +****************************************************************************/ +static void +x86emuOp2_bsr(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm00_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm01_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcoffset = decode_rm10_address(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcval = *DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + else { + u16 srcval, *dstreg; + + srcval = *DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for (*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) + break; + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbe +****************************************************************************/ +static void +x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = (s32) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = (s16) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = (s32) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = (s16) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 2: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = (s32) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = (s16) ((s8) fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + break; + case 3: /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32) ((s8) * srcreg); + } + else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s16) ((s8) * srcreg); + } + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbf +****************************************************************************/ +static void +x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (mod) { + case 0: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm00_address(rl); + srcval = (s32) ((s16) fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 1: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm01_address(rl); + srcval = (s32) ((s16) fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 2: + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rm10_address(rl); + srcval = (s32) ((s16) fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + break; + case 3: /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32) ((s16) * srcreg); + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* Handles opcodes 0xc8-0xcf */ +static void +x86emuOp2_bswap(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("BSWAP\n"); + TRACE_AND_STEP(); + + switch (op2) { + case 0xc8: + M.x86.R_EAX = bswap_32(M.x86.R_EAX); + break; + case 0xc9: + M.x86.R_ECX = bswap_32(M.x86.R_ECX); + break; + case 0xca: + M.x86.R_EDX = bswap_32(M.x86.R_EDX); + break; + case 0xcb: + M.x86.R_EBX = bswap_32(M.x86.R_EBX); + break; + case 0xcc: + M.x86.R_ESP = bswap_32(M.x86.R_ESP); + break; + case 0xcd: + M.x86.R_EBP = bswap_32(M.x86.R_EBP); + break; + case 0xce: + M.x86.R_ESI = bswap_32(M.x86.R_ESI); + break; + case 0xcf: + M.x86.R_EDI = bswap_32(M.x86.R_EDI); + break; + default: + /* can't happen */ + break; + } + + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Double byte operation code table: + **************************************************************************/ +void (*x86emu_optab2[256]) (u8) = { + /* 0x00 */ x86emuOp2_illegal_op, + /* Group F (ring 0 PM) */ + /* 0x01 */ x86emuOp2_illegal_op, + /* Group G (ring 0 PM) */ + /* 0x02 */ x86emuOp2_illegal_op, + /* lar (ring 0 PM) */ + /* 0x03 */ x86emuOp2_illegal_op, + /* lsl (ring 0 PM) */ +/* 0x04 */ x86emuOp2_illegal_op, + /* 0x05 */ x86emuOp2_illegal_op, + /* loadall (undocumented) */ + /* 0x06 */ x86emuOp2_illegal_op, + /* clts (ring 0 PM) */ + /* 0x07 */ x86emuOp2_illegal_op, + /* loadall (undocumented) */ + /* 0x08 */ x86emuOp2_illegal_op, + /* invd (ring 0 PM) */ + /* 0x09 */ x86emuOp2_illegal_op, + /* wbinvd (ring 0 PM) */ +/* 0x0a */ x86emuOp2_illegal_op, +/* 0x0b */ x86emuOp2_illegal_op, +/* 0x0c */ x86emuOp2_illegal_op, +/* 0x0d */ x86emuOp2_illegal_op, +/* 0x0e */ x86emuOp2_illegal_op, +/* 0x0f */ x86emuOp2_illegal_op, +/* 0x10 */ x86emuOp2_illegal_op, +/* 0x11 */ x86emuOp2_illegal_op, +/* 0x12 */ x86emuOp2_illegal_op, +/* 0x13 */ x86emuOp2_illegal_op, +/* 0x14 */ x86emuOp2_illegal_op, +/* 0x15 */ x86emuOp2_illegal_op, +/* 0x16 */ x86emuOp2_illegal_op, +/* 0x17 */ x86emuOp2_illegal_op, +/* 0x18 */ x86emuOp2_illegal_op, +/* 0x19 */ x86emuOp2_illegal_op, +/* 0x1a */ x86emuOp2_illegal_op, +/* 0x1b */ x86emuOp2_illegal_op, +/* 0x1c */ x86emuOp2_illegal_op, +/* 0x1d */ x86emuOp2_illegal_op, +/* 0x1e */ x86emuOp2_illegal_op, +/* 0x1f */ x86emuOp2_illegal_op, + /* 0x20 */ x86emuOp2_illegal_op, + /* mov reg32,creg (ring 0 PM) */ + /* 0x21 */ x86emuOp2_illegal_op, + /* mov reg32,dreg (ring 0 PM) */ + /* 0x22 */ x86emuOp2_illegal_op, + /* mov creg,reg32 (ring 0 PM) */ + /* 0x23 */ x86emuOp2_illegal_op, + /* mov dreg,reg32 (ring 0 PM) */ + /* 0x24 */ x86emuOp2_illegal_op, + /* mov reg32,treg (ring 0 PM) */ +/* 0x25 */ x86emuOp2_illegal_op, + /* 0x26 */ x86emuOp2_illegal_op, + /* mov treg,reg32 (ring 0 PM) */ +/* 0x27 */ x86emuOp2_illegal_op, +/* 0x28 */ x86emuOp2_illegal_op, +/* 0x29 */ x86emuOp2_illegal_op, +/* 0x2a */ x86emuOp2_illegal_op, +/* 0x2b */ x86emuOp2_illegal_op, +/* 0x2c */ x86emuOp2_illegal_op, +/* 0x2d */ x86emuOp2_illegal_op, +/* 0x2e */ x86emuOp2_illegal_op, +/* 0x2f */ x86emuOp2_illegal_op, +/* 0x30 */ x86emuOp2_illegal_op, +/* 0x31 */ x86emuOp2_rdtsc, +/* 0x32 */ x86emuOp2_illegal_op, +/* 0x33 */ x86emuOp2_illegal_op, +/* 0x34 */ x86emuOp2_illegal_op, +/* 0x35 */ x86emuOp2_illegal_op, +/* 0x36 */ x86emuOp2_illegal_op, +/* 0x37 */ x86emuOp2_illegal_op, +/* 0x38 */ x86emuOp2_illegal_op, +/* 0x39 */ x86emuOp2_illegal_op, +/* 0x3a */ x86emuOp2_illegal_op, +/* 0x3b */ x86emuOp2_illegal_op, +/* 0x3c */ x86emuOp2_illegal_op, +/* 0x3d */ x86emuOp2_illegal_op, +/* 0x3e */ x86emuOp2_illegal_op, +/* 0x3f */ x86emuOp2_illegal_op, +/* 0x40 */ x86emuOp2_illegal_op, +/* 0x41 */ x86emuOp2_illegal_op, +/* 0x42 */ x86emuOp2_illegal_op, +/* 0x43 */ x86emuOp2_illegal_op, +/* 0x44 */ x86emuOp2_illegal_op, +/* 0x45 */ x86emuOp2_illegal_op, +/* 0x46 */ x86emuOp2_illegal_op, +/* 0x47 */ x86emuOp2_illegal_op, +/* 0x48 */ x86emuOp2_illegal_op, +/* 0x49 */ x86emuOp2_illegal_op, +/* 0x4a */ x86emuOp2_illegal_op, +/* 0x4b */ x86emuOp2_illegal_op, +/* 0x4c */ x86emuOp2_illegal_op, +/* 0x4d */ x86emuOp2_illegal_op, +/* 0x4e */ x86emuOp2_illegal_op, +/* 0x4f */ x86emuOp2_illegal_op, +/* 0x50 */ x86emuOp2_illegal_op, +/* 0x51 */ x86emuOp2_illegal_op, +/* 0x52 */ x86emuOp2_illegal_op, +/* 0x53 */ x86emuOp2_illegal_op, +/* 0x54 */ x86emuOp2_illegal_op, +/* 0x55 */ x86emuOp2_illegal_op, +/* 0x56 */ x86emuOp2_illegal_op, +/* 0x57 */ x86emuOp2_illegal_op, +/* 0x58 */ x86emuOp2_illegal_op, +/* 0x59 */ x86emuOp2_illegal_op, +/* 0x5a */ x86emuOp2_illegal_op, +/* 0x5b */ x86emuOp2_illegal_op, +/* 0x5c */ x86emuOp2_illegal_op, +/* 0x5d */ x86emuOp2_illegal_op, +/* 0x5e */ x86emuOp2_illegal_op, +/* 0x5f */ x86emuOp2_illegal_op, +/* 0x60 */ x86emuOp2_illegal_op, +/* 0x61 */ x86emuOp2_illegal_op, +/* 0x62 */ x86emuOp2_illegal_op, +/* 0x63 */ x86emuOp2_illegal_op, +/* 0x64 */ x86emuOp2_illegal_op, +/* 0x65 */ x86emuOp2_illegal_op, +/* 0x66 */ x86emuOp2_illegal_op, +/* 0x67 */ x86emuOp2_illegal_op, +/* 0x68 */ x86emuOp2_illegal_op, +/* 0x69 */ x86emuOp2_illegal_op, +/* 0x6a */ x86emuOp2_illegal_op, +/* 0x6b */ x86emuOp2_illegal_op, +/* 0x6c */ x86emuOp2_illegal_op, +/* 0x6d */ x86emuOp2_illegal_op, +/* 0x6e */ x86emuOp2_illegal_op, +/* 0x6f */ x86emuOp2_illegal_op, +/* 0x70 */ x86emuOp2_illegal_op, +/* 0x71 */ x86emuOp2_illegal_op, +/* 0x72 */ x86emuOp2_illegal_op, +/* 0x73 */ x86emuOp2_illegal_op, +/* 0x74 */ x86emuOp2_illegal_op, +/* 0x75 */ x86emuOp2_illegal_op, +/* 0x76 */ x86emuOp2_illegal_op, +/* 0x77 */ x86emuOp2_illegal_op, +/* 0x78 */ x86emuOp2_illegal_op, +/* 0x79 */ x86emuOp2_illegal_op, +/* 0x7a */ x86emuOp2_illegal_op, +/* 0x7b */ x86emuOp2_illegal_op, +/* 0x7c */ x86emuOp2_illegal_op, +/* 0x7d */ x86emuOp2_illegal_op, +/* 0x7e */ x86emuOp2_illegal_op, +/* 0x7f */ x86emuOp2_illegal_op, +/* 0x80 */ x86emuOp2_long_jump, +/* 0x81 */ x86emuOp2_long_jump, +/* 0x82 */ x86emuOp2_long_jump, +/* 0x83 */ x86emuOp2_long_jump, +/* 0x84 */ x86emuOp2_long_jump, +/* 0x85 */ x86emuOp2_long_jump, +/* 0x86 */ x86emuOp2_long_jump, +/* 0x87 */ x86emuOp2_long_jump, +/* 0x88 */ x86emuOp2_long_jump, +/* 0x89 */ x86emuOp2_long_jump, +/* 0x8a */ x86emuOp2_long_jump, +/* 0x8b */ x86emuOp2_long_jump, +/* 0x8c */ x86emuOp2_long_jump, +/* 0x8d */ x86emuOp2_long_jump, +/* 0x8e */ x86emuOp2_long_jump, +/* 0x8f */ x86emuOp2_long_jump, +/* 0x90 */ x86emuOp2_set_byte, +/* 0x91 */ x86emuOp2_set_byte, +/* 0x92 */ x86emuOp2_set_byte, +/* 0x93 */ x86emuOp2_set_byte, +/* 0x94 */ x86emuOp2_set_byte, +/* 0x95 */ x86emuOp2_set_byte, +/* 0x96 */ x86emuOp2_set_byte, +/* 0x97 */ x86emuOp2_set_byte, +/* 0x98 */ x86emuOp2_set_byte, +/* 0x99 */ x86emuOp2_set_byte, +/* 0x9a */ x86emuOp2_set_byte, +/* 0x9b */ x86emuOp2_set_byte, +/* 0x9c */ x86emuOp2_set_byte, +/* 0x9d */ x86emuOp2_set_byte, +/* 0x9e */ x86emuOp2_set_byte, +/* 0x9f */ x86emuOp2_set_byte, +/* 0xa0 */ x86emuOp2_push_FS, +/* 0xa1 */ x86emuOp2_pop_FS, +/* 0xa2 */ x86emuOp2_cpuid, +/* 0xa3 */ x86emuOp2_bt_R, +/* 0xa4 */ x86emuOp2_shld_IMM, +/* 0xa5 */ x86emuOp2_shld_CL, +/* 0xa6 */ x86emuOp2_illegal_op, +/* 0xa7 */ x86emuOp2_illegal_op, +/* 0xa8 */ x86emuOp2_push_GS, +/* 0xa9 */ x86emuOp2_pop_GS, +/* 0xaa */ x86emuOp2_illegal_op, +/* 0xab */ x86emuOp2_bts_R, +/* 0xac */ x86emuOp2_shrd_IMM, +/* 0xad */ x86emuOp2_shrd_CL, +/* 0xae */ x86emuOp2_illegal_op, +/* 0xaf */ x86emuOp2_imul_R_RM, + /* 0xb0 */ x86emuOp2_illegal_op, + /* TODO: cmpxchg */ + /* 0xb1 */ x86emuOp2_illegal_op, + /* TODO: cmpxchg */ +/* 0xb2 */ x86emuOp2_lss_R_IMM, +/* 0xb3 */ x86emuOp2_btr_R, +/* 0xb4 */ x86emuOp2_lfs_R_IMM, +/* 0xb5 */ x86emuOp2_lgs_R_IMM, +/* 0xb6 */ x86emuOp2_movzx_byte_R_RM, +/* 0xb7 */ x86emuOp2_movzx_word_R_RM, +/* 0xb8 */ x86emuOp2_illegal_op, +/* 0xb9 */ x86emuOp2_illegal_op, +/* 0xba */ x86emuOp2_btX_I, +/* 0xbb */ x86emuOp2_btc_R, +/* 0xbc */ x86emuOp2_bsf, +/* 0xbd */ x86emuOp2_bsr, +/* 0xbe */ x86emuOp2_movsx_byte_R_RM, +/* 0xbf */ x86emuOp2_movsx_word_R_RM, + /* 0xc0 */ x86emuOp2_illegal_op, + /* TODO: xadd */ + /* 0xc1 */ x86emuOp2_illegal_op, + /* TODO: xadd */ +/* 0xc2 */ x86emuOp2_illegal_op, +/* 0xc3 */ x86emuOp2_illegal_op, +/* 0xc4 */ x86emuOp2_illegal_op, +/* 0xc5 */ x86emuOp2_illegal_op, +/* 0xc6 */ x86emuOp2_illegal_op, +/* 0xc7 */ x86emuOp2_illegal_op, +/* 0xc8 */ x86emuOp2_bswap, +/* 0xc9 */ x86emuOp2_bswap, +/* 0xca */ x86emuOp2_bswap, +/* 0xcb */ x86emuOp2_bswap, +/* 0xcc */ x86emuOp2_bswap, +/* 0xcd */ x86emuOp2_bswap, +/* 0xce */ x86emuOp2_bswap, +/* 0xcf */ x86emuOp2_bswap, +/* 0xd0 */ x86emuOp2_illegal_op, +/* 0xd1 */ x86emuOp2_illegal_op, +/* 0xd2 */ x86emuOp2_illegal_op, +/* 0xd3 */ x86emuOp2_illegal_op, +/* 0xd4 */ x86emuOp2_illegal_op, +/* 0xd5 */ x86emuOp2_illegal_op, +/* 0xd6 */ x86emuOp2_illegal_op, +/* 0xd7 */ x86emuOp2_illegal_op, +/* 0xd8 */ x86emuOp2_illegal_op, +/* 0xd9 */ x86emuOp2_illegal_op, +/* 0xda */ x86emuOp2_illegal_op, +/* 0xdb */ x86emuOp2_illegal_op, +/* 0xdc */ x86emuOp2_illegal_op, +/* 0xdd */ x86emuOp2_illegal_op, +/* 0xde */ x86emuOp2_illegal_op, +/* 0xdf */ x86emuOp2_illegal_op, +/* 0xe0 */ x86emuOp2_illegal_op, +/* 0xe1 */ x86emuOp2_illegal_op, +/* 0xe2 */ x86emuOp2_illegal_op, +/* 0xe3 */ x86emuOp2_illegal_op, +/* 0xe4 */ x86emuOp2_illegal_op, +/* 0xe5 */ x86emuOp2_illegal_op, +/* 0xe6 */ x86emuOp2_illegal_op, +/* 0xe7 */ x86emuOp2_illegal_op, +/* 0xe8 */ x86emuOp2_illegal_op, +/* 0xe9 */ x86emuOp2_illegal_op, +/* 0xea */ x86emuOp2_illegal_op, +/* 0xeb */ x86emuOp2_illegal_op, +/* 0xec */ x86emuOp2_illegal_op, +/* 0xed */ x86emuOp2_illegal_op, +/* 0xee */ x86emuOp2_illegal_op, +/* 0xef */ x86emuOp2_illegal_op, +/* 0xf0 */ x86emuOp2_illegal_op, +/* 0xf1 */ x86emuOp2_illegal_op, +/* 0xf2 */ x86emuOp2_illegal_op, +/* 0xf3 */ x86emuOp2_illegal_op, +/* 0xf4 */ x86emuOp2_illegal_op, +/* 0xf5 */ x86emuOp2_illegal_op, +/* 0xf6 */ x86emuOp2_illegal_op, +/* 0xf7 */ x86emuOp2_illegal_op, +/* 0xf8 */ x86emuOp2_illegal_op, +/* 0xf9 */ x86emuOp2_illegal_op, +/* 0xfa */ x86emuOp2_illegal_op, +/* 0xfb */ x86emuOp2_illegal_op, +/* 0xfc */ x86emuOp2_illegal_op, +/* 0xfd */ x86emuOp2_illegal_op, +/* 0xfe */ x86emuOp2_illegal_op, +/* 0xff */ x86emuOp2_illegal_op, +}; diff --git a/src/add-ons/kernel/generic/bios/x86emu/prim_ops.c b/src/add-ons/kernel/generic/bios/x86emu/prim_ops.c new file mode 100644 index 0000000000..24f76b47fb --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/prim_ops.c @@ -0,0 +1,2859 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to implement the primitive +* machine operations used by the emulation code in ops.c +* +* Carry Chain Calculation +* +* This represents a somewhat expensive calculation which is +* apparently required to emulate the setting of the OF and AF flag. +* The latter is not so important, but the former is. The overflow +* flag is the XOR of the top two bits of the carry chain for an +* addition (similar for subtraction). Since we do not want to +* simulate the addition in a bitwise manner, we try to calculate the +* carry chain given the two operands and the result. +* +* So, given the following table, which represents the addition of two +* bits, we can derive a formula for the carry chain. +* +* a b cin r cout +* 0 0 0 0 0 +* 0 0 1 1 0 +* 0 1 0 1 0 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 1 +* 1 1 0 0 1 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 1 1 +* 1 | 0 0 1 0 +* +* By inspection, one gets: cc = ab + r'(a + b) +* +* That represents alot of operations, but NO CHOICE.... +* +* Borrow Chain Calculation. +* +* The following table represents the subtraction of two bits, from +* which we can derive a formula for the borrow chain. +* +* a b bin r bout +* 0 0 0 0 0 +* 0 0 1 1 1 +* 0 1 0 1 1 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 0 +* 1 1 0 0 0 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 0 0 +* 1 | 1 1 1 0 +* +* By inspection, one gets: bc = a'b + r(a' + b) +* +****************************************************************************/ + +#include + +#define PRIM_OPS_NO_REDEFINE_ASM +#include "x86emu/x86emui.h" + +#if defined(__GNUC__) +#if defined (__i386__) || defined(__i386) || defined(__AMD64__) || defined(__amd64__) +#include "x86emu/prim_x86_gcc.h" +#endif +#endif + +/*------------------------- Global Variables ------------------------------*/ + +static u32 x86emu_parity_tab[8] = { + 0x96696996, + 0x69969669, + 0x69969669, + 0x96696996, + 0x69969669, + 0x96696996, + 0x96696996, + 0x69969669, +}; + +#define PARITY(x) (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0) +#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1) + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 +aaa_word(u16 d) +{ + u16 res; + + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d += 0x6; + d += 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16) (d & 0xFF0F); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 +aas_word(u16 d) +{ + u16 res; + + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d -= 0x6; + d -= 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } + else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16) (d & 0xFF0F); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAD instruction and side effects. +****************************************************************************/ +u16 +aad_word(u16 d) +{ + u16 l; + u8 hb, lb; + + hb = (u8) ((d >> 8) & 0xff); + lb = (u8) ((d & 0xff)); + l = (u16) ((lb + 10 * hb) & 0xFF); + + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(l & 0x80, F_SF); + CONDITIONAL_SET_FLAG(l == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(l & 0xff), F_PF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the AAM instruction and side effects. +****************************************************************************/ +u16 +aam_word(u8 d) +{ + u16 h, l; + + h = (u16) (d / 10); + l = (u16) (d % 10); + l |= (u16) (h << 8); + + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(l & 0x80, F_SF); + CONDITIONAL_SET_FLAG(l == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(l & 0xff), F_PF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u8 +adc_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + if (ACCESS_FLAG(F_CF)) + res = 1 + d + s; + else + res = d + s; + + CONDITIONAL_SET_FLAG(res & 0x100, F_CF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 6), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u16 +adc_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + if (ACCESS_FLAG(F_CF)) + res = 1 + d + s; + else + res = d + s; + + CONDITIONAL_SET_FLAG(res & 0x10000, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 14), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u32 +adc_long(u32 d, u32 s) +{ + register u32 lo; /* all operands in native machine order */ + register u32 hi; + register u32 res; + register u32 cc; + + if (ACCESS_FLAG(F_CF)) { + lo = 1 + (d & 0xFFFF) + (s & 0xFFFF); + res = 1 + d + s; + } + else { + lo = (d & 0xFFFF) + (s & 0xFFFF); + res = d + s; + } + hi = (lo >> 16) + (d >> 16) + (s >> 16); + + CONDITIONAL_SET_FLAG(hi & 0x10000, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 30), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u8 +add_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + res = d + s; + CONDITIONAL_SET_FLAG(res & 0x100, F_CF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 6), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u16 +add_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + res = d + s; + CONDITIONAL_SET_FLAG(res & 0x10000, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 14), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u32 +add_long(u32 d, u32 s) +{ + register u32 lo; /* all operands in native machine order */ + register u32 hi; + register u32 res; + register u32 cc; + + lo = (d & 0xFFFF) + (s & 0xFFFF); + res = d + s; + hi = (lo >> 16) + (d >> 16) + (s >> 16); + + CONDITIONAL_SET_FLAG(hi & 0x10000, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 30), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u8 +and_byte(u8 d, u8 s) +{ + register u8 res; /* all operands in native machine order */ + + res = d & s; + + /* set the flags */ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u16 +and_word(u16 d, u16 s) +{ + register u16 res; /* all operands in native machine order */ + + res = d & s; + + /* set the flags */ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u32 +and_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d & s; + + /* set the flags */ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u8 +cmp_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CLEAR_FLAG(F_CF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u16 +cmp_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u32 +cmp_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DAA instruction and side effects. +****************************************************************************/ +u8 +daa_byte(u8 d) +{ + u32 res = d; + + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + res += 6; + SET_FLAG(F_AF); + } + if (res > 0x9F || ACCESS_FLAG(F_CF)) { + res += 0x60; + SET_FLAG(F_CF); + } + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG((res & 0xFF) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the DAS instruction and side effects. +****************************************************************************/ +u8 +das_byte(u8 d) +{ + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + d -= 6; + SET_FLAG(F_AF); + } + if (d > 0x9F || ACCESS_FLAG(F_CF)) { + d -= 0x60; + SET_FLAG(F_CF); + } + CONDITIONAL_SET_FLAG(d & 0x80, F_SF); + CONDITIONAL_SET_FLAG(d == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(d & 0xff), F_PF); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u8 +dec_byte(u8 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - 1; + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + /* based on sub_byte, uses s==1. */ + bc = (res & (~d | 1)) | (~d & 1); + /* carry flag unchanged */ + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u16 +dec_word(u16 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - 1; + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + /* based on the sub_byte routine, with s==1 */ + bc = (res & (~d | 1)) | (~d & 1); + /* carry flag unchanged */ + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u32 +dec_long(u32 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - 1; + + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | 1)) | (~d & 1); + /* carry flag unchanged */ + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u8 +inc_byte(u8 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + res = d + 1; + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = ((1 & d) | (~res)) & (1 | d); + CONDITIONAL_SET_FLAG(XOR2(cc >> 6), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u16 +inc_word(u16 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + res = d + 1; + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (1 & d) | ((~res) & (1 | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 14), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u32 +inc_long(u32 d) +{ + register u32 res; /* all operands in native machine order */ + register u32 cc; + + res = d + 1; + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the carry chain SEE NOTE AT TOP. */ + cc = (1 & d) | ((~res) & (1 | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> 30), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 +or_byte(u8 d, u8 s) +{ + register u8 res; /* all operands in native machine order */ + + res = d | s; + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 +or_word(u16 d, u16 s) +{ + register u16 res; /* all operands in native machine order */ + + res = d | s; + /* set the carry flag to be bit 8 */ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 +or_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d | s; + + /* set the carry flag to be bit 8 */ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 +neg_byte(u8 s) +{ + register u8 res; + register u8 bc; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u8) - s; + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res), F_PF); + /* calculate the borrow chain --- modified such that d=0. + substitutiing d=0 into bc= res&(~d|s)|(~d&s); + (the one used for sub) and simplifying, since ~d=0xff..., + ~d|s == 0xffff..., and res&0xfff... == res. Similarly + ~d&s == s. So the simplified result is: */ + bc = res | s; + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 +neg_word(u16 s) +{ + register u16 res; + register u16 bc; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u16) - s; + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain --- modified such that d=0. + substitutiing d=0 into bc= res&(~d|s)|(~d&s); + (the one used for sub) and simplifying, since ~d=0xff..., + ~d|s == 0xffff..., and res&0xfff... == res. Similarly + ~d&s == s. So the simplified result is: */ + bc = res | s; + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 +neg_long(u32 s) +{ + register u32 res; + register u32 bc; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u32) - s; + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain --- modified such that d=0. + substitutiing d=0 into bc= res&(~d|s)|(~d&s); + (the one used for sub) and simplifying, since ~d=0xff..., + ~d|s == 0xffff..., and res&0xfff... == res. Similarly + ~d&s == s. So the simplified result is: */ + bc = res | s; + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u8 +not_byte(u8 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u16 +not_word(u16 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u32 +not_long(u32 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u8 +rcl_byte(u8 d, u8 s) +{ + register unsigned int res, cnt, mask, cf; + + /* s is the rotate distance. It varies from 0 - 8. */ + /* have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + want to rotate through the carry by "s" bits. We could + loop, but that's inefficient. So the width is 9, + and we split into three parts: + + The new carry flag (was B_n) + the stuff in B_n-1 .. B_0 + the stuff in B_7 .. B_n+1 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the MSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(8-n) + 2) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 + 3) B_(n-1) <- cf + 4) B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(8-n) */ + cf = (d >> (8 - cnt)) & 0x1; + + /* get the low stuff which rotated + into the range B_7 .. B_cnt */ + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */ + /* note that the right hand side done by the mask */ + res = (d << cnt) & 0xff; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (9 - cnt)) & mask; + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(n-1) <- cf */ + res |= 1 << (cnt - 1); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized this expression since it appears to + be causing OF to be misset */ + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)), F_OF); + + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u16 +rcl_word(u16 d, u8 s) +{ + register unsigned int res, cnt, mask, cf; + + res = d; + if ((cnt = s % 17) != 0) { + cf = (d >> (16 - cnt)) & 0x1; + res = (d << cnt) & 0xffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (17 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)), F_OF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u32 +rcl_long(u32 d, u8 s) +{ + register u32 res, cnt, mask, cf; + + res = d; + if ((cnt = s % 33) != 0) { + cf = (d >> (32 - cnt)) & 0x1; + res = (d << cnt) & 0xffffffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (33 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)), F_OF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u8 +rcr_byte(u8 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the LSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(n-1) + 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 3) B_(8-n) <- cf + 4) B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(n-1) */ + if (cnt == 1) { + cf = d & 0x1; + /* note hackery here. Access_flag(..) evaluates to either + 0 if flag not set + non-zero if flag is set. + doing access_flag(..) != 0 casts that into either + 0..1 in any representation of the flags register + (i.e. packed bit array or unpacked.) + */ + ocf = ACCESS_FLAG(F_CF) != 0; + } + else + cf = (d >> (cnt - 1)) & 0x1; + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */ + /* note that the right hand side done by the mask + This is effectively done by shifting the + object to the right. The result must be masked, + in case the object came in and was treated + as a negative number. Needed??? */ + + mask = (1 << (8 - cnt)) - 1; + res = (d >> cnt) & mask; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + res |= (d << (9 - cnt)); + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(8-n) <- cf */ + res |= 1 << (8 - cnt); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized... */ + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)), F_OF); + } + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u16 +rcr_word(u16 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 17) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } + else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (16 - cnt)) - 1; + res = (d >> cnt) & mask; + res |= (d << (17 - cnt)); + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (16 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)), F_OF); + } + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u32 +rcr_long(u32 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 33) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } + else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (32 - cnt)) - 1; + res = (d >> cnt) & mask; + if (cnt != 1) + res |= (d << (33 - cnt)); + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (32 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)), F_OF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u8 +rol_byte(u8 d, u8 s) +{ + register unsigned int res, cnt, mask; + + /* rotate left */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 ... B_0 + + The new rotate is done mod 8. + Much simpler than the "rcl" or "rcr" operations. + + IF n > 0 + 1) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) + 2) B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) + */ + res = d; + if ((cnt = s % 8) != 0) { + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */ + res = (d << cnt); + + /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */ + mask = (1 << cnt) - 1; + res |= (d >> (8 - cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of CF and the most significant bit. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 6) & 0x2)), F_OF); + } + if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u16 +rol_word(u16 d, u8 s) +{ + register unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (16 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 14) & 0x2)), F_OF); + } + if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u32 +rol_long(u32 d, u8 s) +{ + register u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (32 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 30) & 0x2)), F_OF); + } + if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u8 +ror_byte(u8 d, u8 s) +{ + register unsigned int res, cnt, mask; + + /* rotate right */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + B_7 ... B_0 + + The rotate is done mod 8. + + IF n > 0 + 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 2) B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) + */ + res = d; + if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */ + /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ + res = (d << (8 - cnt)); + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */ + mask = (1 << (8 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of the two most significant bits. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF); + } + else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u16 +ror_word(u16 d, u8 s) +{ + register unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << (16 - cnt)); + mask = (1 << (16 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF); + } + else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u32 +ror_long(u32 d, u8 s) +{ + register u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << (32 - cnt)); + mask = (1 << (32 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF); + } + else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u8 +shl_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + + /* last bit shifted out goes into carry flag */ + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (8 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = (u8) d; + } + + if (cnt == 1) { + /* Needs simplification. */ + CONDITIONAL_SET_FLAG((((res & 0x80) == 0x80) ^ + (ACCESS_FLAG(F_CF) != 0)), + /* was (M.x86.R_FLG&F_CF)==F_CF)), */ + F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s - 1)) & 0x80, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u16 +shl_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = (u16) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s - 1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u32 +shl_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s - 1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u8 +shr_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = (u8) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d >> (s - 1)) & 0x1, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u16 +shr_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u32 +shr_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u8 +sar_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + res = d; + sf = d & 0x80; + cnt = s % 8; + if (cnt > 0 && cnt < 8) { + mask = (1 << (8 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + } + else if (cnt >= 8) { + if (sf) { + res = 0xff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } + else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u16 +sar_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + sf = d & 0x8000; + cnt = s % 16; + res = d; + if (cnt > 0 && cnt < 16) { + mask = (1 << (16 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else if (cnt >= 16) { + if (sf) { + res = 0xffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } + else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u32 +sar_long(u32 d, u8 s) +{ + u32 cnt, res, cf, mask, sf; + + sf = d & 0x80000000; + cnt = s % 32; + res = d; + if (cnt > 0 && cnt < 32) { + mask = (1 << (32 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else if (cnt >= 32) { + if (sf) { + res = 0xffffffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } + else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u16 +shld_word(u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = (d << cnt) | (fill >> (16 - cnt)); + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s - 1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u32 +shld_long(u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = (d << cnt) | (fill >> (32 - cnt)); + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s - 1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u16 +shrd_word(u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u32 +shrd_long(u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + } + else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } + else { + CLEAR_FLAG(F_OF); + } + } + else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u8 +sbb_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u16 +sbb_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u32 +sbb_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u8 +sub_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG((res & 0xff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8) res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u16 +sub_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16) res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u32 +sub_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + register u32 bc; + + res = d - s; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG((res & 0xffffffff) == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void +test_byte(u8 d, u8 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void +test_word(u16 d, u16 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void +test_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u8 +xor_byte(u8 d, u8 s) +{ + register u8 res; /* all operands in native machine order */ + + res = d ^ s; + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res), F_PF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u16 +xor_word(u16 d, u16 s) +{ + register u16 res; /* all operands in native machine order */ + + res = d ^ s; + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u32 +xor_long(u32 d, u32 s) +{ + register u32 res; /* all operands in native machine order */ + + res = d ^ s; + CLEAR_FLAG(F_OF); + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(res & 0xff), F_PF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void +imul_byte(u8 s) +{ + s16 res = (s16) ((s8) M.x86.R_AL * (s8) s); + + M.x86.R_AX = res; + if (((M.x86.R_AL & 0x80) == 0 && M.x86.R_AH == 0x00) || + ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void +imul_word(u16 s) +{ + s32 res = (s16) M.x86.R_AX * (s16) s; + + M.x86.R_AX = (u16) res; + M.x86.R_DX = (u16) (res >> 16); + if (((M.x86.R_AX & 0x8000) == 0 && M.x86.R_DX == 0x00) || + ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void +imul_long_direct(u32 * res_lo, u32 * res_hi, u32 d, u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 res = (s64) (s32) d * (s32) s; + + *res_lo = (u32) res; + *res_hi = (u32) (res >> 32); +#else + u32 d_lo, d_hi, d_sign; + u32 s_lo, s_hi, s_sign; + u32 rlo_lo, rlo_hi, rhi_lo; + + if ((d_sign = d & 0x80000000) != 0) + d = -d; + d_lo = d & 0xFFFF; + d_hi = d >> 16; + if ((s_sign = s & 0x80000000) != 0) + s = -s; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = d_lo * s_lo; + rlo_hi = (d_hi * s_lo + d_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = d_hi * s_hi + (rlo_hi >> 16); + *res_lo = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + *res_hi = rhi_lo; + if (d_sign != s_sign) { + d = ~*res_lo; + s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16); + *res_lo = ~*res_lo + 1; + *res_hi = ~*res_hi + (s >> 16); + } +#endif +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void +imul_long(u32 s) +{ + imul_long_direct(&M.x86.R_EAX, &M.x86.R_EDX, M.x86.R_EAX, s); + if (((M.x86.R_EAX & 0x80000000) == 0 && M.x86.R_EDX == 0x00) || + ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void +mul_byte(u8 s) +{ + u16 res = (u16) (M.x86.R_AL * s); + + M.x86.R_AX = res; + if (M.x86.R_AH == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void +mul_word(u16 s) +{ + u32 res = M.x86.R_AX * s; + + M.x86.R_AX = (u16) res; + M.x86.R_DX = (u16) (res >> 16); + if (M.x86.R_DX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void +mul_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 res = (u64) M.x86.R_EAX * s; + + M.x86.R_EAX = (u32) res; + M.x86.R_EDX = (u32) (res >> 32); +#else + u32 a, a_lo, a_hi; + u32 s_lo, s_hi; + u32 rlo_lo, rlo_hi, rhi_lo; + + a = M.x86.R_EAX; + a_lo = a & 0xFFFF; + a_hi = a >> 16; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = a_lo * s_lo; + rlo_hi = (a_hi * s_lo + a_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = a_hi * s_hi + (rlo_hi >> 16); + M.x86.R_EAX = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + M.x86.R_EDX = rhi_lo; +#endif + + if (M.x86.R_EDX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void +idiv_byte(u8 s) +{ + s32 dvd, div, mod; + + dvd = (s16) M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s8) s; + mod = dvd % (s8) s; + if (abs(div) > 0x7f) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (s8) div; + M.x86.R_AH = (s8) mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void +idiv_word(u16 s) +{ + s32 dvd, div, mod; + + dvd = (((s32) M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s16) s; + mod = dvd % (s16) s; + if (abs(div) > 0x7fff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(mod & 0xff), F_PF); + + M.x86.R_AX = (u16) div; + M.x86.R_DX = (u16) mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void +idiv_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 dvd, div, mod; + + dvd = (((s64) M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s32) s; + mod = dvd % (s32) s; + if (abs(div) > 0x7fffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + u32 abs_s = s & 0x7FFFFFFF; + u32 abs_h_dvd = h_dvd & 0x7FFFFFFF; + u32 h_s = abs_s >> 1; + u32 l_s = abs_s << 31; + int counter = 31; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (abs_h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = abs_s << (--counter); + continue; + } + else { + abs_h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = abs_s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (abs_h_dvd || (l_dvd > abs_s)) { + x86emu_intr_raise(0); + return; + } + /* sign */ + div |= ((h_dvd & 0x10000000) ^ (s & 0x10000000)); + mod = l_dvd; + +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + CONDITIONAL_SET_FLAG(PARITY(mod & 0xff), F_PF); + + M.x86.R_EAX = (u32) div; + M.x86.R_EDX = (u32) mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void +div_byte(u8 s) +{ + u32 dvd, div, mod; + + dvd = M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u8) s; + mod = dvd % (u8) s; + if (abs(div) > 0xff) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (u8) div; + M.x86.R_AH = (u8) mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void +div_word(u16 s) +{ + u32 dvd, div, mod; + + dvd = (((u32) M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u16) s; + mod = dvd % (u16) s; + if (abs(div) > 0xffff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + CONDITIONAL_SET_FLAG(PARITY(mod & 0xff), F_PF); + + M.x86.R_AX = (u16) div; + M.x86.R_DX = (u16) mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void +div_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 dvd, div, mod; + + dvd = (((u64) M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u32) s; + mod = dvd % (u32) s; + if (abs(div) > 0xffffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + + u32 h_s = s; + u32 l_s = 0; + int counter = 32; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = s << (--counter); + continue; + } + else { + h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (h_dvd || (l_dvd > s)) { + x86emu_intr_raise(0); + return; + } + mod = l_dvd; +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + CONDITIONAL_SET_FLAG(PARITY(mod & 0xff), F_PF); + + M.x86.R_EAX = (u32) div; + M.x86.R_EDX = (u32) mod; +} + +/**************************************************************************** +REMARKS: +Implements the IN string instruction and side effects. +****************************************************************************/ +void +ins(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* in until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + switch (size) { + case 1: + while (count--) { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inb) (M.x86.R_DX)); + M.x86.R_DI += inc; + } + break; + + case 2: + while (count--) { + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inw) (M.x86.R_DX)); + M.x86.R_DI += inc; + } + break; + case 4: + while (count--) { + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inl) (M.x86.R_DX)); + M.x86.R_DI += inc; + break; + } + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + else { + switch (size) { + case 1: + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inb) (M.x86.R_DX)); + break; + case 2: + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inw) (M.x86.R_DX)); + break; + case 4: + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, + (*sys_inl) (M.x86.R_DX)); + break; + } + M.x86.R_DI += inc; + } +} + +/**************************************************************************** +REMARKS: +Implements the OUT string instruction and side effects. +****************************************************************************/ +void +outs(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* out until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + switch (size) { + case 1: + while (count--) { + (*sys_outb) (M.x86.R_DX, + fetch_data_byte_abs(M.x86.R_ES, M.x86.R_SI)); + M.x86.R_SI += inc; + } + break; + + case 2: + while (count--) { + (*sys_outw) (M.x86.R_DX, + fetch_data_word_abs(M.x86.R_ES, M.x86.R_SI)); + M.x86.R_SI += inc; + } + break; + case 4: + while (count--) { + (*sys_outl) (M.x86.R_DX, + fetch_data_long_abs(M.x86.R_ES, M.x86.R_SI)); + M.x86.R_SI += inc; + break; + } + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + else { + switch (size) { + case 1: + (*sys_outb) (M.x86.R_DX, + fetch_data_byte_abs(M.x86.R_ES, M.x86.R_SI)); + break; + case 2: + (*sys_outw) (M.x86.R_DX, + fetch_data_word_abs(M.x86.R_ES, M.x86.R_SI)); + break; + case 4: + (*sys_outl) (M.x86.R_DX, + fetch_data_long_abs(M.x86.R_ES, M.x86.R_SI)); + break; + } + M.x86.R_SI += inc; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Address to fetch word from + +REMARKS: +Fetches a word from emulator memory using an absolute address. +****************************************************************************/ +u16 +mem_access_word(int addr) +{ + DB(if (CHECK_MEM_ACCESS()) + x86emu_check_mem_access(addr);) + return (*sys_rdw) (addr); +} + +/**************************************************************************** +REMARKS: +Pushes a word onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void +push_word(u16 w) +{ + DB(if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 2; + (*sys_wrw) (((u32) M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pushes a long onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void +push_long(u32 w) +{ + DB(if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 4; + (*sys_wrl) (((u32) M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pops a word from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u16 +pop_word(void) +{ + register u16 res; + + DB(if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdw) (((u32) M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 2; + return res; +} + +/**************************************************************************** +REMARKS: +Pops a long from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u32 +pop_long(void) +{ + register u32 res; + + DB(if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdl) (((u32) M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 4; + return res; +} + +/**************************************************************************** +REMARKS: +CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output +****************************************************************************/ +void +cpuid(void) +{ + u32 feature = M.x86.R_EAX; + +#ifdef X86EMU_HAS_HW_CPUID + /* If the platform allows it, we will base our values on the real + * results from the CPUID instruction. We limit support to the + * first two features, and the results of those are sanitized. + */ + if (feature <= 1) + hw_cpuid(&M.x86.R_EAX, &M.x86.R_EBX, &M.x86.R_ECX, &M.x86.R_EDX); +#endif + + switch (feature) { + case 0: + /* Regardless if we have real data from the hardware, the emulator + * will only support upto feature 1, which we set in register EAX. + * Registers EBX:EDX:ECX contain a string identifying the CPU. + */ + M.x86.R_EAX = 1; +#ifndef X86EMU_HAS_HW_CPUID + /* EBX:EDX:ECX = "GenuineIntel" */ + M.x86.R_EBX = 0x756e6547; + M.x86.R_EDX = 0x49656e69; + M.x86.R_ECX = 0x6c65746e; +#endif + break; + case 1: +#ifndef X86EMU_HAS_HW_CPUID + /* If we don't have x86 compatible hardware, we return values from an + * Intel 486dx4; which was one of the first processors to have CPUID. + */ + M.x86.R_EAX = 0x00000480; + M.x86.R_EBX = 0x00000000; + M.x86.R_ECX = 0x00000000; + M.x86.R_EDX = 0x00000002; /* VME */ +#else + /* In the case that we have hardware CPUID instruction, we make sure + * that the features reported are limited to TSC and VME. + */ + M.x86.R_EDX &= 0x00000012; +#endif + break; + default: + /* Finally, we don't support any additional features. Most CPUs + * return all zeros when queried for invalid or unsupported feature + * numbers. + */ + M.x86.R_EAX = 0; + M.x86.R_EBX = 0; + M.x86.R_ECX = 0; + M.x86.R_EDX = 0; + break; + } +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/sys.c b/src/add-ons/kernel/generic/bios/x86emu/sys.c new file mode 100644 index 0000000000..031f44f534 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/sys.c @@ -0,0 +1,550 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* programmed I/O and memory access. Included in this module +* are default functions with limited usefulness. For real +* uses these functions will most likely be overriden by the +* user library. +* +****************************************************************************/ + +#include "x86emu.h" +#include "x86emu/x86emui.h" +#include "x86emu/regs.h" +#include "x86emu/debug.h" +#include "x86emu/prim_ops.h" +#ifndef NO_SYS_HEADERS +#include +#endif + +#ifdef __GNUC__ + +/* Define some packed structures to use with unaligned accesses */ + +struct __una_u64 { + u64 x __attribute__ ((packed)); +}; +struct __una_u32 { + u32 x __attribute__ ((packed)); +}; +struct __una_u16 { + u16 x __attribute__ ((packed)); +}; + +/* Elemental unaligned loads */ + +static __inline__ u64 +ldq_u(u64 * p) +{ + const struct __una_u64 *ptr = (const struct __una_u64 *) p; + + return ptr->x; +} + +static __inline__ u32 +ldl_u(u32 * p) +{ + const struct __una_u32 *ptr = (const struct __una_u32 *) p; + + return ptr->x; +} + +static __inline__ u16 +ldw_u(u16 * p) +{ + const struct __una_u16 *ptr = (const struct __una_u16 *) p; + + return ptr->x; +} + +/* Elemental unaligned stores */ + +static __inline__ void +stq_u(u64 val, u64 * p) +{ + struct __una_u64 *ptr = (struct __una_u64 *) p; + + ptr->x = val; +} + +static __inline__ void +stl_u(u32 val, u32 * p) +{ + struct __una_u32 *ptr = (struct __una_u32 *) p; + + ptr->x = val; +} + +static __inline__ void +stw_u(u16 val, u16 * p) +{ + struct __una_u16 *ptr = (struct __una_u16 *) p; + + ptr->x = val; +} +#else /* !__GNUC__ */ + +static __inline__ u64 +ldq_u(u64 * p) +{ + u64 ret; + + memmove(&ret, p, sizeof(*p)); + return ret; +} + +static __inline__ u32 +ldl_u(u32 * p) +{ + u32 ret; + + memmove(&ret, p, sizeof(*p)); + return ret; +} + +static __inline__ u16 +ldw_u(u16 * p) +{ + u16 ret; + + memmove(&ret, p, sizeof(*p)); + return ret; +} + +static __inline__ void +stq_u(u64 val, u64 * p) +{ + u64 tmp = val; + + memmove(p, &tmp, sizeof(*p)); +} + +static __inline__ void +stl_u(u32 val, u32 * p) +{ + u32 tmp = val; + + memmove(p, &tmp, sizeof(*p)); +} + +static __inline__ void +stw_u(u16 val, u16 * p) +{ + u16 tmp = val; + + memmove(p, &tmp, sizeof(*p)); +} + +#endif /* __GNUC__ */ +/*------------------------- Global Variables ------------------------------*/ + +X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */ +X86EMU_intrFuncs _X86EMU_intrTab[256]; + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Byte value read from emulator memory. + +REMARKS: +Reads a byte value from the emulator memory. +****************************************************************************/ +u8 X86API +rdb(u32 addr) +{ + u8 val; + + if (addr > M.mem_size - 1) { + DB(printk("mem_read: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } + val = *(u8 *) (M.mem_base + addr); + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 1 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Word value read from emulator memory. + +REMARKS: +Reads a word value from the emulator memory. +****************************************************************************/ +u16 X86API +rdw(u32 addr) +{ + u16 val = 0; + + if (addr > M.mem_size - 2) { + DB(printk("mem_read: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } +#ifdef __BIG_ENDIAN__ + if (addr & 0x1) { + val = (*(u8 *) (M.mem_base + addr) | + (*(u8 *) (M.mem_base + addr + 1) << 8)); + } + else +#endif + val = ldw_u((u16 *) (M.mem_base + addr)); + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 2 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Long value read from emulator memory. +REMARKS: +Reads a long value from the emulator memory. +****************************************************************************/ +u32 X86API +rdl(u32 addr) +{ + u32 val = 0; + + if (addr > M.mem_size - 4) { + DB(printk("mem_read: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } +#ifdef __BIG_ENDIAN__ + if (addr & 0x3) { + val = (*(u8 *) (M.mem_base + addr + 0) | + (*(u8 *) (M.mem_base + addr + 1) << 8) | + (*(u8 *) (M.mem_base + addr + 2) << 16) | + (*(u8 *) (M.mem_base + addr + 3) << 24)); + } + else +#endif + val = ldl_u((u32 *) (M.mem_base + addr)); + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 4 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a byte value to emulator memory. +****************************************************************************/ +void X86API +wrb(u32 addr, u8 val) +{ + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 1 <- %#x\n", addr, val);) + if (addr > M.mem_size - 1) { + DB(printk("mem_write: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } + *(u8 *) (M.mem_base + addr) = val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a word value to emulator memory. +****************************************************************************/ +void X86API +wrw(u32 addr, u16 val) +{ + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 2 <- %#x\n", addr, val);) + if (addr > M.mem_size - 2) { + DB(printk("mem_write: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } +#ifdef __BIG_ENDIAN__ + if (addr & 0x1) { + *(u8 *) (M.mem_base + addr + 0) = (val >> 0) & 0xff; + *(u8 *) (M.mem_base + addr + 1) = (val >> 8) & 0xff; + } + else +#endif + stw_u(val, (u16 *) (M.mem_base + addr)); +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a long value to emulator memory. +****************************************************************************/ +void X86API +wrl(u32 addr, u32 val) +{ + DB(if (DEBUG_MEM_TRACE()) + printk("%#08x 4 <- %#x\n", addr, val);) + if (addr > M.mem_size - 4) { + DB(printk("mem_write: address %#x out of range!\n", addr); + ) + HALT_SYS(); + } +#ifdef __BIG_ENDIAN__ + if (addr & 0x1) { + *(u8 *) (M.mem_base + addr + 0) = (val >> 0) & 0xff; + *(u8 *) (M.mem_base + addr + 1) = (val >> 8) & 0xff; + *(u8 *) (M.mem_base + addr + 2) = (val >> 16) & 0xff; + *(u8 *) (M.mem_base + addr + 3) = (val >> 24) & 0xff; + } + else +#endif + stl_u(val, (u32 *) (M.mem_base + addr)); +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO byte read function. Doesn't perform real inb. +****************************************************************************/ +static u8 X86API +p_inb(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inb %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO word read function. Doesn't perform real inw. +****************************************************************************/ +static u16 X86API +p_inw(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inw %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO long read function. Doesn't perform real inl. +****************************************************************************/ +static u32 X86API +p_inl(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inl %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO byte write function. Doesn't perform real outb. +****************************************************************************/ +static void X86API +p_outb(X86EMU_pioAddr addr, u8 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outb %#02x -> %#04x \n", val, addr);) + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO word write function. Doesn't perform real outw. +****************************************************************************/ +static void X86API +p_outw(X86EMU_pioAddr addr, u16 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outw %#04x -> %#04x \n", val, addr);) + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO ;ong write function. Doesn't perform real outl. +****************************************************************************/ +static void X86API +p_outl(X86EMU_pioAddr addr, u32 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outl %#08x -> %#04x \n", val, addr);) + return; +} + +/*------------------------- Global Variables ------------------------------*/ + +u8(X86APIP sys_rdb) (u32 addr) = rdb; +u16(X86APIP sys_rdw) (u32 addr) = rdw; +u32(X86APIP sys_rdl) (u32 addr) = rdl; +void (X86APIP sys_wrb) (u32 addr, u8 val) = wrb; +void (X86APIP sys_wrw) (u32 addr, u16 val) = wrw; +void (X86APIP sys_wrl) (u32 addr, u32 val) = wrl; + +u8(X86APIP sys_inb) (X86EMU_pioAddr addr) = p_inb; +u16(X86APIP sys_inw) (X86EMU_pioAddr addr) = p_inw; +u32(X86APIP sys_inl) (X86EMU_pioAddr addr) = p_inl; +void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val) = p_outb; +void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val) = p_outw; +void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val) = p_outl; + +/*----------------------------- Setup -------------------------------------*/ + +/**************************************************************************** +PARAMETERS: +funcs - New memory function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +memory space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void +X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs) +{ + sys_rdb = funcs->rdb; + sys_rdw = funcs->rdw; + sys_rdl = funcs->rdl; + sys_wrb = funcs->wrb; + sys_wrw = funcs->wrw; + sys_wrl = funcs->wrl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New programmed I/O function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +I/O space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void +X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs) +{ + sys_inb = funcs->inb; + sys_inw = funcs->inw; + sys_inl = funcs->inl; + sys_outb = funcs->outb; + sys_outw = funcs->outw; + sys_outl = funcs->outl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New interrupt vector table to make active + +REMARKS: +This function is used to set the pointers to functions which handle +interrupt processing in the emulator, allowing the user application to +hook interrupts as necessary for their application. Any interrupts that +are not hooked by the user application, and reflected and handled internally +in the emulator via the interrupt vector table. This allows the application +to get control when the code being emulated executes specific software +interrupts. +****************************************************************************/ +void +X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]) +{ + int i; + + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = NULL; + if (funcs) { + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = funcs[i]; + } +} + +/**************************************************************************** +PARAMETERS: +int - New software interrupt to prepare for + +REMARKS: +This function is used to set up the emulator state to exceute a software +interrupt. This can be used by the user application code to allow an +interrupt to be hooked, examined and then reflected back to the emulator +so that the code in the emulator will continue processing the software +interrupt as per normal. This essentially allows system code to actively +hook and handle certain software interrupts as necessary. +****************************************************************************/ +void +X86EMU_prepareForInt(int num) +{ + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(num * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(num * 4); + M.x86.intr = 0; +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/validate.c b/src/add-ons/kernel/generic/bios/x86emu/validate.c new file mode 100644 index 0000000000..4c36e1df51 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/validate.c @@ -0,0 +1,769 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: Watcom C 10.6 or later +* Environment: 32-bit DOS +* Developer: Kendall Bennett +* +* Description: Program to validate the x86 emulator library for +* correctness. We run the emulator primitive operations +* functions against the real x86 CPU, and compare the result +* and flags to ensure correctness. +* +* We use inline assembler to compile and build this program. +* +****************************************************************************/ + +#include +#include +#include +#include +#include "x86emu.h" +#include "x86emu/prim_asm.h" + +/*-------------------------- Implementation -------------------------------*/ + +#define true 1 +#define false 0 + +#define ALL_FLAGS (F_CF | F_PF | F_AF | F_ZF | F_SF | F_OF) + +#define VAL_START_BINARY(parm_type,res_type,dmax,smax,dincr,sincr) \ +{ \ + parm_type d,s; \ + res_type r,r_asm; \ + ulong flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < dmax; d += dincr) { \ + for (s = 0; s < smax; s += sincr) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { + +#define VAL_TEST_BINARY(name) \ + r_asm = name##_asm(&flags,d,s); \ + r = name(d,s); \ + if (r != r_asm || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { + +#define VAL_TEST_BINARY_VOID(name) \ + name##_asm(&flags,d,s); \ + name(d,s); \ + r = r_asm = 0; \ + if (M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { + +#define VAL_FAIL_BYTE_BYTE_BINARY(name) \ + if (failed) \ + printk("fail\n"); \ + printk("0x%02X = %-15s(0x%02X,0x%02X), flags = %s -> %s\n", \ + r, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%02X = %-15s(0x%02X,0x%02X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_FAIL_WORD_WORD_BINARY(name) \ + if (failed) \ + printk("fail\n"); \ + printk("0x%04X = %-15s(0x%04X,0x%04X), flags = %s -> %s\n", \ + r, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X = %-15s(0x%04X,0x%04X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_FAIL_LONG_LONG_BINARY(name) \ + if (failed) \ + printk("fail\n"); \ + printk("0x%08X = %-15s(0x%08X,0x%08X), flags = %s -> %s\n", \ + r, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%08X = %-15s(0x%08X,0x%08X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_END_BINARY() \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_BYTE_BYTE_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u8,u8,0xFF,0xFF,1,1) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_BYTE_BYTE_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_WORD_WORD_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u16,u16,0xFF00,0xFF00,0x100,0x100) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_WORD_WORD_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_LONG_LONG_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u32,u32,0xFF000000,0xFF000000,0x1000000,0x1000000) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_LONG_LONG_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_VOID_BYTE_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u8,u8,0xFF,0xFF,1,1) \ + VAL_TEST_BINARY_VOID(name) \ + VAL_FAIL_BYTE_BYTE_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_VOID_WORD_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u16,u16,0xFF00,0xFF00,0x100,0x100) \ + VAL_TEST_BINARY_VOID(name) \ + VAL_FAIL_WORD_WORD_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_VOID_LONG_BINARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u32,u32,0xFF000000,0xFF000000,0x1000000,0x1000000) \ + VAL_TEST_BINARY_VOID(name) \ + VAL_FAIL_LONG_LONG_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_BYTE_ROTATE(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u8,u8,0xFF,8,1,1) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_BYTE_BYTE_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_WORD_ROTATE(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u16,u16,0xFF00,16,0x100,1) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_WORD_WORD_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_LONG_ROTATE(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_BINARY(u32,u32,0xFF000000,32,0x1000000,1) \ + VAL_TEST_BINARY(name) \ + VAL_FAIL_LONG_LONG_BINARY(name) \ + VAL_END_BINARY() + +#define VAL_START_TERNARY(parm_type,res_type,dmax,smax,dincr,sincr,maxshift)\ +{ \ + parm_type d,s; \ + res_type r,r_asm; \ + u8 shift; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < dmax; d += dincr) { \ + for (s = 0; s < smax; s += sincr) { \ + for (shift = 0; shift < maxshift; shift += 1) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { + +#define VAL_TEST_TERNARY(name) \ + r_asm = name##_asm(&flags,d,s,shift); \ + r = name(d,s,shift); \ + if (r != r_asm || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { + +#define VAL_FAIL_WORD_WORD_TERNARY(name) \ + if (failed) \ + printk("fail\n"); \ + printk("0x%04X = %-15s(0x%04X,0x%04X,%d), flags = %s -> %s\n", \ + r, #name, d, s, shift, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X = %-15s(0x%04X,0x%04X,%d), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, shift, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_FAIL_LONG_LONG_TERNARY(name) \ + if (failed) \ + printk("fail\n"); \ + printk("0x%08X = %-15s(0x%08X,0x%08X,%d), flags = %s -> %s\n", \ + r, #name, d, s, shift, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%08X = %-15s(0x%08X,0x%08X,%d), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, shift, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_END_TERNARY() \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_WORD_ROTATE_DBL(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_TERNARY(u16,u16,0xFF00,0xFF00,0x100,0x100,16) \ + VAL_TEST_TERNARY(name) \ + VAL_FAIL_WORD_WORD_TERNARY(name) \ + VAL_END_TERNARY() + +#define VAL_LONG_ROTATE_DBL(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_TERNARY(u32,u32,0xFF000000,0xFF000000,0x1000000,0x1000000,32) \ + VAL_TEST_TERNARY(name) \ + VAL_FAIL_LONG_LONG_TERNARY(name) \ + VAL_END_TERNARY() + +#define VAL_START_UNARY(parm_type,max,incr) \ +{ \ + parm_type d,r,r_asm; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < max; d += incr) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { + +#define VAL_TEST_UNARY(name) \ + r_asm = name##_asm(&flags,d); \ + r = name(d); \ + if (r != r_asm || M.x86.R_EFLG != flags) { \ + failed = true; + +#define VAL_FAIL_BYTE_UNARY(name) \ + printk("fail\n"); \ + printk("0x%02X = %-15s(0x%02X), flags = %s -> %s\n", \ + r, #name, d, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%02X = %-15s(0x%02X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_FAIL_WORD_UNARY(name) \ + printk("fail\n"); \ + printk("0x%04X = %-15s(0x%04X), flags = %s -> %s\n", \ + r, #name, d, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X = %-15s(0x%04X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_FAIL_LONG_UNARY(name) \ + printk("fail\n"); \ + printk("0x%08X = %-15s(0x%08X), flags = %s -> %s\n", \ + r, #name, d, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%08X = %-15s(0x%08X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, print_flags(buf1,inflags), print_flags(buf2,flags)); + +#define VAL_END_UNARY() \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | ALL_FLAGS; \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_BYTE_UNARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_UNARY(u8,0xFF,0x1) \ + VAL_TEST_UNARY(name) \ + VAL_FAIL_BYTE_UNARY(name) \ + VAL_END_UNARY() + +#define VAL_WORD_UNARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_UNARY(u16,0xFF00,0x100) \ + VAL_TEST_UNARY(name) \ + VAL_FAIL_WORD_UNARY(name) \ + VAL_END_UNARY() + +#define VAL_WORD_BYTE_UNARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_UNARY(u16,0xFF,0x1) \ + VAL_TEST_UNARY(name) \ + VAL_FAIL_WORD_UNARY(name) \ + VAL_END_UNARY() + +#define VAL_LONG_UNARY(name) \ + printk("Validating %s ... ", #name); \ + VAL_START_UNARY(u32,0xFF000000,0x1000000) \ + VAL_TEST_UNARY(name) \ + VAL_FAIL_LONG_UNARY(name) \ + VAL_END_UNARY() + +#define VAL_BYTE_MUL(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u8 d,s; \ + u16 r,r_asm; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF; d += 1) { \ + for (s = 0; s < 0xFF; s += 1) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + name##_asm(&flags,&r_asm,d,s); \ + M.x86.R_AL = d; \ + name(s); \ + r = M.x86.R_AX; \ + if (r != r_asm || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%04X = %-15s(0x%02X,0x%02X), flags = %s -> %s\n", \ + r, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X = %-15s(0x%02X,0x%02X), flags = %s -> %s\n", \ + r_asm, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_WORD_MUL(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u16 d,s; \ + u16 r_lo,r_asm_lo; \ + u16 r_hi,r_asm_hi; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF00; d += 0x100) { \ + for (s = 0; s < 0xFF00; s += 0x100) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + name##_asm(&flags,&r_asm_lo,&r_asm_hi,d,s); \ + M.x86.R_AX = d; \ + name(s); \ + r_lo = M.x86.R_AX; \ + r_hi = M.x86.R_DX; \ + if (r_lo != r_asm_lo || r_hi != r_asm_hi || M.x86.R_EFLG != flags)\ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%04X:0x%04X = %-15s(0x%04X,0x%04X), flags = %s -> %s\n", \ + r_hi,r_lo, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X:0x%04X = %-15s(0x%04X,0x%04X), flags = %s -> %s\n", \ + r_asm_hi,r_asm_lo, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_LONG_MUL(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u32 d,s; \ + u32 r_lo,r_asm_lo; \ + u32 r_hi,r_asm_hi; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF000000; d += 0x1000000) { \ + for (s = 0; s < 0xFF000000; s += 0x1000000) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + name##_asm(&flags,&r_asm_lo,&r_asm_hi,d,s); \ + M.x86.R_EAX = d; \ + name(s); \ + r_lo = M.x86.R_EAX; \ + r_hi = M.x86.R_EDX; \ + if (r_lo != r_asm_lo || r_hi != r_asm_hi || M.x86.R_EFLG != flags)\ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%08X:0x%08X = %-15s(0x%08X,0x%08X), flags = %s -> %s\n", \ + r_hi,r_lo, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%08X:0x%08X = %-15s(0x%08X,0x%08X), flags = %s -> %s\n", \ + r_asm_hi,r_asm_lo, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_BYTE_DIV(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u16 d,s; \ + u8 r_quot,r_rem,r_asm_quot,r_asm_rem; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF00; d += 0x100) { \ + for (s = 1; s < 0xFF; s += 1) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + M.x86.intr = 0; \ + M.x86.R_AX = d; \ + name(s); \ + r_quot = M.x86.R_AL; \ + r_rem = M.x86.R_AH; \ + if (M.x86.intr & INTR_SYNCH) \ + continue; \ + name##_asm(&flags,&r_asm_quot,&r_asm_rem,d,s); \ + if (r_quot != r_asm_quot || r_rem != r_asm_rem || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%02X:0x%02X = %-15s(0x%04X,0x%02X), flags = %s -> %s\n", \ + r_quot, r_rem, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%02X:0x%02X = %-15s(0x%04X,0x%02X), flags = %s -> %s\n", \ + r_asm_quot, r_asm_rem, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_WORD_DIV(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u32 d,s; \ + u16 r_quot,r_rem,r_asm_quot,r_asm_rem; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF000000; d += 0x1000000) { \ + for (s = 0x100; s < 0xFF00; s += 0x100) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + M.x86.intr = 0; \ + M.x86.R_AX = d & 0xFFFF; \ + M.x86.R_DX = d >> 16; \ + name(s); \ + r_quot = M.x86.R_AX; \ + r_rem = M.x86.R_DX; \ + if (M.x86.intr & INTR_SYNCH) \ + continue; \ + name##_asm(&flags,&r_asm_quot,&r_asm_rem,d & 0xFFFF,d >> 16,s);\ + if (r_quot != r_asm_quot || r_rem != r_asm_rem || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%04X:0x%04X = %-15s(0x%08X,0x%04X), flags = %s -> %s\n", \ + r_quot, r_rem, #name, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%04X:0x%04X = %-15s(0x%08X,0x%04X), flags = %s -> %s\n", \ + r_asm_quot, r_asm_rem, #name"_asm", d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +#define VAL_LONG_DIV(name) \ + printk("Validating %s ... ", #name); \ +{ \ + u32 d,s; \ + u32 r_quot,r_rem,r_asm_quot,r_asm_rem; \ + u32 flags,inflags; \ + int f,failed = false; \ + char buf1[80],buf2[80]; \ + for (d = 0; d < 0xFF000000; d += 0x1000000) { \ + for (s = 0x100; s < 0xFF00; s += 0x100) { \ + M.x86.R_EFLG = inflags = flags = def_flags; \ + for (f = 0; f < 2; f++) { \ + M.x86.intr = 0; \ + M.x86.R_EAX = d; \ + M.x86.R_EDX = 0; \ + name(s); \ + r_quot = M.x86.R_EAX; \ + r_rem = M.x86.R_EDX; \ + if (M.x86.intr & INTR_SYNCH) \ + continue; \ + name##_asm(&flags,&r_asm_quot,&r_asm_rem,d,0,s); \ + if (r_quot != r_asm_quot || r_rem != r_asm_rem || M.x86.R_EFLG != flags) \ + failed = true; \ + if (failed || trace) { \ + if (failed) \ + printk("fail\n"); \ + printk("0x%08X:0x%08X = %-15s(0x%08X:0x%08X,0x%08X), flags = %s -> %s\n", \ + r_quot, r_rem, #name, 0, d, s, print_flags(buf1,inflags), print_flags(buf2,M.x86.R_EFLG)); \ + printk("0x%08X:0x%08X = %-15s(0x%08X:0x%08X,0x%08X), flags = %s -> %s\n", \ + r_asm_quot, r_asm_rem, #name"_asm", 0, d, s, print_flags(buf1,inflags), print_flags(buf2,flags)); \ + } \ + M.x86.R_EFLG = inflags = flags = def_flags | (ALL_FLAGS & ~F_OF); \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (failed) \ + break; \ + } \ + if (!failed) \ + printk("passed\n"); \ +} + +void +printk(const char *fmt, ...) +{ + va_list argptr; + + va_start(argptr, fmt); + vfprintf(stdout, fmt, argptr); + fflush(stdout); + va_end(argptr); +} + +char * +print_flags(char *buf, ulong flags) +{ + char *separator = ""; + + buf[0] = 0; + if (flags & F_CF) { + strcat(buf, separator); + strcat(buf, "CF"); + separator = ","; + } + if (flags & F_PF) { + strcat(buf, separator); + strcat(buf, "PF"); + separator = ","; + } + if (flags & F_AF) { + strcat(buf, separator); + strcat(buf, "AF"); + separator = ","; + } + if (flags & F_ZF) { + strcat(buf, separator); + strcat(buf, "ZF"); + separator = ","; + } + if (flags & F_SF) { + strcat(buf, separator); + strcat(buf, "SF"); + separator = ","; + } + if (flags & F_OF) { + strcat(buf, separator); + strcat(buf, "OF"); + separator = ","; + } + if (separator[0] == 0) + strcpy(buf, "None"); + return buf; +} + +int +main(int argc) +{ + ulong def_flags; + int trace = false; + + if (argc > 1) + trace = true; + memset(&M, 0, sizeof(M)); + def_flags = get_flags_asm() & ~ALL_FLAGS; + + VAL_WORD_UNARY(aaa_word); + VAL_WORD_UNARY(aas_word); + + VAL_WORD_UNARY(aad_word); + VAL_WORD_UNARY(aam_word); + + VAL_BYTE_BYTE_BINARY(adc_byte); + VAL_WORD_WORD_BINARY(adc_word); + VAL_LONG_LONG_BINARY(adc_long); + + VAL_BYTE_BYTE_BINARY(add_byte); + VAL_WORD_WORD_BINARY(add_word); + VAL_LONG_LONG_BINARY(add_long); + + VAL_BYTE_BYTE_BINARY(and_byte); + VAL_WORD_WORD_BINARY(and_word); + VAL_LONG_LONG_BINARY(and_long); + + VAL_BYTE_BYTE_BINARY(cmp_byte); + VAL_WORD_WORD_BINARY(cmp_word); + VAL_LONG_LONG_BINARY(cmp_long); + + VAL_BYTE_UNARY(daa_byte); + VAL_BYTE_UNARY(das_byte); /* Fails for 0x9A (out of range anyway) */ + + VAL_BYTE_UNARY(dec_byte); + VAL_WORD_UNARY(dec_word); + VAL_LONG_UNARY(dec_long); + + VAL_BYTE_UNARY(inc_byte); + VAL_WORD_UNARY(inc_word); + VAL_LONG_UNARY(inc_long); + + VAL_BYTE_BYTE_BINARY(or_byte); + VAL_WORD_WORD_BINARY(or_word); + VAL_LONG_LONG_BINARY(or_long); + + VAL_BYTE_UNARY(neg_byte); + VAL_WORD_UNARY(neg_word); + VAL_LONG_UNARY(neg_long); + + VAL_BYTE_UNARY(not_byte); + VAL_WORD_UNARY(not_word); + VAL_LONG_UNARY(not_long); + + VAL_BYTE_ROTATE(rcl_byte); + VAL_WORD_ROTATE(rcl_word); + VAL_LONG_ROTATE(rcl_long); + + VAL_BYTE_ROTATE(rcr_byte); + VAL_WORD_ROTATE(rcr_word); + VAL_LONG_ROTATE(rcr_long); + + VAL_BYTE_ROTATE(rol_byte); + VAL_WORD_ROTATE(rol_word); + VAL_LONG_ROTATE(rol_long); + + VAL_BYTE_ROTATE(ror_byte); + VAL_WORD_ROTATE(ror_word); + VAL_LONG_ROTATE(ror_long); + + VAL_BYTE_ROTATE(shl_byte); + VAL_WORD_ROTATE(shl_word); + VAL_LONG_ROTATE(shl_long); + + VAL_BYTE_ROTATE(shr_byte); + VAL_WORD_ROTATE(shr_word); + VAL_LONG_ROTATE(shr_long); + + VAL_BYTE_ROTATE(sar_byte); + VAL_WORD_ROTATE(sar_word); + VAL_LONG_ROTATE(sar_long); + + VAL_WORD_ROTATE_DBL(shld_word); + VAL_LONG_ROTATE_DBL(shld_long); + + VAL_WORD_ROTATE_DBL(shrd_word); + VAL_LONG_ROTATE_DBL(shrd_long); + + VAL_BYTE_BYTE_BINARY(sbb_byte); + VAL_WORD_WORD_BINARY(sbb_word); + VAL_LONG_LONG_BINARY(sbb_long); + + VAL_BYTE_BYTE_BINARY(sub_byte); + VAL_WORD_WORD_BINARY(sub_word); + VAL_LONG_LONG_BINARY(sub_long); + + VAL_BYTE_BYTE_BINARY(xor_byte); + VAL_WORD_WORD_BINARY(xor_word); + VAL_LONG_LONG_BINARY(xor_long); + + VAL_VOID_BYTE_BINARY(test_byte); + VAL_VOID_WORD_BINARY(test_word); + VAL_VOID_LONG_BINARY(test_long); + + VAL_BYTE_MUL(imul_byte); + VAL_WORD_MUL(imul_word); + VAL_LONG_MUL(imul_long); + + VAL_BYTE_MUL(mul_byte); + VAL_WORD_MUL(mul_word); + VAL_LONG_MUL(mul_long); + + VAL_BYTE_DIV(idiv_byte); + VAL_WORD_DIV(idiv_word); + VAL_LONG_DIV(idiv_long); + + VAL_BYTE_DIV(div_byte); + VAL_WORD_DIV(div_word); + VAL_LONG_DIV(div_long); + + return 0; +} diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu.h new file mode 100644 index 0000000000..501dd913c9 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu.h @@ -0,0 +1,197 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for public specific functions. +* Any application linking against us should only +* include this header +* +****************************************************************************/ + +#ifndef __X86EMU_X86EMU_H +#define __X86EMU_X86EMU_H + +#ifdef SCITECH +#include "scitech.h" +#define X86API _ASMAPI +#define X86APIP _ASMAPIP +typedef int X86EMU_pioAddr; +#else +#include "x86emu/types.h" +#define X86API +#define X86APIP * +#endif +#include "x86emu/regs.h" + +/*---------------------- Macros and type definitions ----------------------*/ + +#ifdef PACK +#pragma PACK /* Don't pack structs with function pointers! */ +#endif + +/**************************************************************************** +REMARKS: +Data structure containing ponters to programmed I/O functions used by the +emulator. This is used so that the user program can hook all programmed +I/O for the emulator to handled as necessary by the user program. By +default the emulator contains simple functions that do not do access the +hardware in any way. To allow the emualtor access the hardware, you will +need to override the programmed I/O functions using the X86EMU_setupPioFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +inb - Function to read a byte from an I/O port +inw - Function to read a word from an I/O port +inl - Function to read a dword from an I/O port +outb - Function to write a byte to an I/O port +outw - Function to write a word to an I/O port +outl - Function to write a dword to an I/O port +****************************************************************************/ +typedef struct { + u8(X86APIP inb) (X86EMU_pioAddr addr); + u16(X86APIP inw) (X86EMU_pioAddr addr); + u32(X86APIP inl) (X86EMU_pioAddr addr); + void (X86APIP outb) (X86EMU_pioAddr addr, u8 val); + void (X86APIP outw) (X86EMU_pioAddr addr, u16 val); + void (X86APIP outl) (X86EMU_pioAddr addr, u32 val); +} X86EMU_pioFuncs; + +/**************************************************************************** +REMARKS: +Data structure containing ponters to memory access functions used by the +emulator. This is used so that the user program can hook all memory +access functions as necessary for the emulator. By default the emulator +contains simple functions that only access the internal memory of the +emulator. If you need specialised functions to handle access to different +types of memory (ie: hardware framebuffer accesses and BIOS memory access +etc), you will need to override this using the X86EMU_setupMemFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +rdb - Function to read a byte from an address +rdw - Function to read a word from an address +rdl - Function to read a dword from an address +wrb - Function to write a byte to an address +wrw - Function to write a word to an address +wrl - Function to write a dword to an address +****************************************************************************/ +typedef struct { + u8(X86APIP rdb) (u32 addr); + u16(X86APIP rdw) (u32 addr); + u32(X86APIP rdl) (u32 addr); + void (X86APIP wrb) (u32 addr, u8 val); + void (X86APIP wrw) (u32 addr, u16 val); + void (X86APIP wrl) (u32 addr, u32 val); +} X86EMU_memFuncs; + +/**************************************************************************** + Here are the default memory read and write + function in case they are needed as fallbacks. +***************************************************************************/ +extern u8 X86API rdb(u32 addr); +extern u16 X86API rdw(u32 addr); +extern u32 X86API rdl(u32 addr); +extern void X86API wrb(u32 addr, u8 val); +extern void X86API wrw(u32 addr, u16 val); +extern void X86API wrl(u32 addr, u32 val); + +#ifdef END_PACK +#pragma END_PACK +#endif + +/*--------------------- type definitions -----------------------------------*/ + +typedef void (X86APIP X86EMU_intrFuncs) (int num); +extern X86EMU_intrFuncs _X86EMU_intrTab[256]; + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs); + void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs); + void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]); + void X86EMU_prepareForInt(int num); + +/* decode.c */ + + void X86EMU_exec(void); + void X86EMU_halt_sys(void); + +#ifdef DEBUG +#define HALT_SYS() \ + printk("halt_sys: file %s, line %d\n", __FILE__, __LINE__), \ + X86EMU_halt_sys() +#else +#define HALT_SYS() X86EMU_halt_sys() +#endif + +/* Debug options */ + +#define DEBUG_DECODE_F 0x000001 /* print decoded instruction */ +#define DEBUG_TRACE_F 0x000002 /* dump regs before/after execution */ +#define DEBUG_STEP_F 0x000004 +#define DEBUG_DISASSEMBLE_F 0x000008 +#define DEBUG_BREAK_F 0x000010 +#define DEBUG_SVC_F 0x000020 +#define DEBUG_SAVE_IP_CS_F 0x000040 +#define DEBUG_FS_F 0x000080 +#define DEBUG_PROC_F 0x000100 +#define DEBUG_SYSINT_F 0x000200 /* bios system interrupts. */ +#define DEBUG_TRACECALL_F 0x000400 +#define DEBUG_INSTRUMENT_F 0x000800 +#define DEBUG_MEM_TRACE_F 0x001000 +#define DEBUG_IO_TRACE_F 0x002000 +#define DEBUG_TRACECALL_REGS_F 0x004000 +#define DEBUG_DECODE_NOPRINT_F 0x008000 +#define DEBUG_EXIT 0x010000 +#define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F) + + void X86EMU_trace_regs(void); + void X86EMU_trace_xregs(void); + void X86EMU_dump_memory(u16 seg, u16 off, u32 amt); + int X86EMU_trace_on(void); + int X86EMU_trace_off(void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_X86EMU_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/debug.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/debug.h new file mode 100644 index 0000000000..385b804dd7 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/debug.h @@ -0,0 +1,209 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for debug definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_DEBUG_H +#define __X86EMU_DEBUG_H + +/*---------------------- Macros and type definitions ----------------------*/ + +/* checks to be enabled for "runtime" */ + +#define CHECK_IP_FETCH_F 0x1 +#define CHECK_SP_ACCESS_F 0x2 +#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */ +#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset */ + +#ifdef DEBUG +#define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F) +#define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F) +#define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F) +#define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F) +#else +#define CHECK_IP_FETCH() +#define CHECK_SP_ACCESS() +#define CHECK_MEM_ACCESS() +#define CHECK_DATA_ACCESS() +#endif + +#ifdef DEBUG +#define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F) +#define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F) +#define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F) +#define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F) +#define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F) +#define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F) +#define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F) +#define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_IP_CS_F) + +#define DEBUG_FS() (M.x86.debug & DEBUG_FS_F) +#define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F) +#define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F) +#define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F) +#define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F) +#define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F) +#define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F) +#define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F) +#define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F) +#else +#define DEBUG_INSTRUMENT() 0 +#define DEBUG_DECODE() 0 +#define DEBUG_TRACE() 0 +#define DEBUG_STEP() 0 +#define DEBUG_DISASSEMBLE() 0 +#define DEBUG_BREAK() 0 +#define DEBUG_SVC() 0 +#define DEBUG_SAVE_IP_CS() 0 +#define DEBUG_FS() 0 +#define DEBUG_PROC() 0 +#define DEBUG_SYSINT() 0 +#define DEBUG_TRACECALL() 0 +#define DEBUG_TRACECALLREGS() 0 +#define DEBUG_SYS() 0 +#define DEBUG_MEM_TRACE() 0 +#define DEBUG_IO_TRACE() 0 +#define DEBUG_DECODE_NOPRINT() 0 +#endif + +#ifdef DEBUG + +#define DECODE_PRINTF(x) if (DEBUG_DECODE()) \ + x86emu_decode_printf(x) +#define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \ + x86emu_decode_printf2(x,y) + +/* + * The following allow us to look at the bytes of an instruction. The + * first INCR_INSTRN_LEN, is called everytime bytes are consumed in + * the decoding process. The SAVE_IP_CS is called initially when the + * major opcode of the instruction is accessed. + */ +#define INC_DECODED_INST_LEN(x) \ + if (DEBUG_DECODE()) \ + x86emu_inc_decoded_inst_len(x) + +#define SAVE_IP_CS(x,y) \ + if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \ + | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \ + M.x86.saved_cs = x; \ + M.x86.saved_ip = y; \ + } +#else +#define INC_DECODED_INST_LEN(x) +#define DECODE_PRINTF(x) +#define DECODE_PRINTF2(x,y) +#define SAVE_IP_CS(x,y) +#endif + +#ifdef DEBUG +#define TRACE_REGS() \ + if (DEBUG_DISASSEMBLE()) { \ + x86emu_just_disassemble(); \ + goto EndOfTheInstructionProcedure; \ + } \ + if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs() +#else +#define TRACE_REGS() +#endif + +#ifdef DEBUG +#define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step() +#else +#define SINGLE_STEP() +#endif + +#define TRACE_AND_STEP() \ + TRACE_REGS(); \ + SINGLE_STEP() + +#ifdef DEBUG +#define START_OF_INSTR() +#define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr(); +#define END_OF_INSTR_NO_TRACE() x86emu_end_instr(); +#else +#define START_OF_INSTR() +#define END_OF_INSTR() +#define END_OF_INSTR_NO_TRACE() +#endif + +#ifdef DEBUG +#define CALL_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x); +#define RETURN_TRACE(n,u,v) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: %s\n",u,v,n); +#else +#define CALL_TRACE(u,v,w,x,s) +#define RETURN_TRACE(n,u,v) +#endif + +#ifdef DEBUG +#define DB(x) x +#else +#define DB(x) +#endif + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + extern void x86emu_inc_decoded_inst_len(int x); + extern void x86emu_decode_printf(const char *x); + extern void x86emu_decode_printf2(const char *x, int y); + extern void x86emu_just_disassemble(void); + extern void x86emu_single_step(void); + extern void x86emu_end_instr(void); + extern void x86emu_dump_regs(void); + extern void x86emu_dump_xregs(void); + extern void x86emu_print_int_vect(u16 iv); + extern void x86emu_instrument_instruction(void); + extern void x86emu_check_ip_access(void); + extern void x86emu_check_sp_access(void); + extern void x86emu_check_mem_access(u32 p); + extern void x86emu_check_data_access(uint s, uint o); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_DEBUG_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/decode.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/decode.h new file mode 100644 index 0000000000..49a1f7b540 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/decode.h @@ -0,0 +1,87 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for instruction decoding logic. +* +****************************************************************************/ + +#ifndef __X86EMU_DECODE_H +#define __X86EMU_DECODE_H + +/*---------------------- Macros and type definitions ----------------------*/ + +/* Instruction Decoding Stuff */ + +#define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) +#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) +#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) +#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) +#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + void x86emu_intr_raise(u8 type); + void fetch_decode_modrm(int *mod, int *regh, int *regl); + u8 fetch_byte_imm(void); + u16 fetch_word_imm(void); + u32 fetch_long_imm(void); + u8 fetch_data_byte(uint offset); + u8 fetch_data_byte_abs(uint segment, uint offset); + u16 fetch_data_word(uint offset); + u16 fetch_data_word_abs(uint segment, uint offset); + u32 fetch_data_long(uint offset); + u32 fetch_data_long_abs(uint segment, uint offset); + void store_data_byte(uint offset, u8 val); + void store_data_byte_abs(uint segment, uint offset, u8 val); + void store_data_word(uint offset, u16 val); + void store_data_word_abs(uint segment, uint offset, u16 val); + void store_data_long(uint offset, u32 val); + void store_data_long_abs(uint segment, uint offset, u32 val); + u8 *decode_rm_byte_register(int reg); + u16 *decode_rm_word_register(int reg); + u32 *decode_rm_long_register(int reg); + u16 *decode_rm_seg_register(int reg); + u32 decode_rm00_address(int rm); + u32 decode_rm01_address(int rm); + u32 decode_rm10_address(int rm); + u32 decode_sib_address(int sib, int mod); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_DECODE_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu.h new file mode 100644 index 0000000000..1c114987f0 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu.h @@ -0,0 +1,60 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for FPU instruction decoding. +* +****************************************************************************/ + +#ifndef __X86EMU_FPU_H +#define __X86EMU_FPU_H + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* these have to be defined, whether 8087 support compiled in or not. */ + + extern void x86emuOp_esc_coprocess_d8(u8 op1); + extern void x86emuOp_esc_coprocess_d9(u8 op1); + extern void x86emuOp_esc_coprocess_da(u8 op1); + extern void x86emuOp_esc_coprocess_db(u8 op1); + extern void x86emuOp_esc_coprocess_dc(u8 op1); + extern void x86emuOp_esc_coprocess_dd(u8 op1); + extern void x86emuOp_esc_coprocess_de(u8 op1); + extern void x86emuOp_esc_coprocess_df(u8 op1); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_FPU_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu_regs.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu_regs.h new file mode 100644 index 0000000000..5a780e69c0 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/fpu_regs.h @@ -0,0 +1,119 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for FPU register definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_FPU_REGS_H +#define __X86EMU_FPU_REGS_H + +#ifdef X86_FPU_SUPPORT + +#ifdef PACK +#pragma PACK +#endif + +/* Basic 8087 register can hold any of the following values: */ + +union x86_fpu_reg_u { + s8 tenbytes[10]; + double dval; + float fval; + s16 sval; + s32 lval; +}; + +struct x86_fpu_reg { + union x86_fpu_reg_u reg; + char tag; +}; + +/* + * Since we are not going to worry about the problems of aliasing + * registers, every time a register is modified, its result type is + * set in the tag fields for that register. If some operation + * attempts to access the type in a way inconsistent with its current + * storage format, then we flag the operation. If common, we'll + * attempt the conversion. + */ + +#define X86_FPU_VALID 0x80 +#define X86_FPU_REGTYP(r) ((r) & 0x7F) + +#define X86_FPU_WORD 0x0 +#define X86_FPU_SHORT 0x1 +#define X86_FPU_LONG 0x2 +#define X86_FPU_FLOAT 0x3 +#define X86_FPU_DOUBLE 0x4 +#define X86_FPU_LDBL 0x5 +#define X86_FPU_BSD 0x6 + +#define X86_FPU_STKTOP 0 + +struct x86_fpu_registers { + struct x86_fpu_reg x86_fpu_stack[8]; + int x86_fpu_flags; + int x86_fpu_config; /* rounding modes, etc. */ + short x86_fpu_tos, x86_fpu_bos; +}; + +#ifdef END_PACK +#pragma END_PACK +#endif + +/* + * There are two versions of the following macro. + * + * One version is for opcode D9, for which there are more than 32 + * instructions encoded in the second byte of the opcode. + * + * The other version, deals with all the other 7 i87 opcodes, for + * which there are only 32 strings needed to describe the + * instructions. + */ + +#endif /* X86_FPU_SUPPORT */ + +#ifdef DEBUG +#define DECODE_PRINTINSTR32(t,mod,rh,rl) \ + DECODE_PRINTF(t[(mod<<3)+(rh)]); +#define DECODE_PRINTINSTR256(t,mod,rh,rl) \ + DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]); +#else +#define DECODE_PRINTINSTR32(t,mod,rh,rl) +#define DECODE_PRINTINSTR256(t,mod,rh,rl) +#endif + +#endif /* __X86EMU_FPU_REGS_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/ops.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/ops.h new file mode 100644 index 0000000000..1bc07a4e1d --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/ops.h @@ -0,0 +1,45 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for operand decoding functions. +* +****************************************************************************/ + +#ifndef __X86EMU_OPS_H +#define __X86EMU_OPS_H + +extern void (*x86emu_optab[0x100]) (u8 op1); +extern void (*x86emu_optab2[0x100]) (u8 op2); + +#endif /* __X86EMU_OPS_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_asm.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_asm.h new file mode 100644 index 0000000000..aca132bf1c --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_asm.h @@ -0,0 +1,1053 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: Watcom C++ 10.6 or later +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Inline assembler versions of the primitive operand +* functions for faster performance. At the moment this is +* x86 inline assembler, but these functions could be replaced +* with native inline assembler for each supported processor +* platform. +* +****************************************************************************/ + +#ifndef __X86EMU_PRIM_ASM_H +#define __X86EMU_PRIM_ASM_H + +#ifdef __WATCOMC__ + +#ifndef VALIDATE +#define __HAVE_INLINE_ASSEMBLER__ +#endif + +u32 get_flags_asm(void); + +#pragma aux get_flags_asm = \ + "pushf" \ + "pop eax" \ + value [eax] \ + modify exact [eax]; + +u16 aaa_word_asm(u32 * flags, u16 d); + +#pragma aux aaa_word_asm = \ + "push [edi]" \ + "popf" \ + "aaa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aas_word_asm(u32 * flags, u16 d); + +#pragma aux aas_word_asm = \ + "push [edi]" \ + "popf" \ + "aas" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aad_word_asm(u32 * flags, u16 d); + +#pragma aux aad_word_asm = \ + "push [edi]" \ + "popf" \ + "aad" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aam_word_asm(u32 * flags, u8 d); + +#pragma aux aam_word_asm = \ + "push [edi]" \ + "popf" \ + "aam" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [ax] \ + modify exact [ax]; + +u8 adc_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux adc_byte_asm = \ + "push [edi]" \ + "popf" \ + "adc al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 adc_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux adc_word_asm = \ + "push [edi]" \ + "popf" \ + "adc ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 adc_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux adc_long_asm = \ + "push [edi]" \ + "popf" \ + "adc eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 add_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux add_byte_asm = \ + "push [edi]" \ + "popf" \ + "add al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 add_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux add_word_asm = \ + "push [edi]" \ + "popf" \ + "add ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 add_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux add_long_asm = \ + "push [edi]" \ + "popf" \ + "add eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 and_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux and_byte_asm = \ + "push [edi]" \ + "popf" \ + "and al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 and_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux and_word_asm = \ + "push [edi]" \ + "popf" \ + "and ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 and_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux and_long_asm = \ + "push [edi]" \ + "popf" \ + "and eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 cmp_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux cmp_byte_asm = \ + "push [edi]" \ + "popf" \ + "cmp al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 cmp_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux cmp_word_asm = \ + "push [edi]" \ + "popf" \ + "cmp ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 cmp_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux cmp_long_asm = \ + "push [edi]" \ + "popf" \ + "cmp eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 daa_byte_asm(u32 * flags, u8 d); + +#pragma aux daa_byte_asm = \ + "push [edi]" \ + "popf" \ + "daa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 das_byte_asm(u32 * flags, u8 d); + +#pragma aux das_byte_asm = \ + "push [edi]" \ + "popf" \ + "das" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 dec_byte_asm(u32 * flags, u8 d); + +#pragma aux dec_byte_asm = \ + "push [edi]" \ + "popf" \ + "dec al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 dec_word_asm(u32 * flags, u16 d); + +#pragma aux dec_word_asm = \ + "push [edi]" \ + "popf" \ + "dec ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 dec_long_asm(u32 * flags, u32 d); + +#pragma aux dec_long_asm = \ + "push [edi]" \ + "popf" \ + "dec eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 inc_byte_asm(u32 * flags, u8 d); + +#pragma aux inc_byte_asm = \ + "push [edi]" \ + "popf" \ + "inc al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 inc_word_asm(u32 * flags, u16 d); + +#pragma aux inc_word_asm = \ + "push [edi]" \ + "popf" \ + "inc ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 inc_long_asm(u32 * flags, u32 d); + +#pragma aux inc_long_asm = \ + "push [edi]" \ + "popf" \ + "inc eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 or_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux or_byte_asm = \ + "push [edi]" \ + "popf" \ + "or al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 or_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux or_word_asm = \ + "push [edi]" \ + "popf" \ + "or ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 or_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux or_long_asm = \ + "push [edi]" \ + "popf" \ + "or eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 neg_byte_asm(u32 * flags, u8 d); + +#pragma aux neg_byte_asm = \ + "push [edi]" \ + "popf" \ + "neg al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 neg_word_asm(u32 * flags, u16 d); + +#pragma aux neg_word_asm = \ + "push [edi]" \ + "popf" \ + "neg ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 neg_long_asm(u32 * flags, u32 d); + +#pragma aux neg_long_asm = \ + "push [edi]" \ + "popf" \ + "neg eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 not_byte_asm(u32 * flags, u8 d); + +#pragma aux not_byte_asm = \ + "push [edi]" \ + "popf" \ + "not al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 not_word_asm(u32 * flags, u16 d); + +#pragma aux not_word_asm = \ + "push [edi]" \ + "popf" \ + "not ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 not_long_asm(u32 * flags, u32 d); + +#pragma aux not_long_asm = \ + "push [edi]" \ + "popf" \ + "not eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 rcl_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux rcl_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcl_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux rcl_word_asm = \ + "push [edi]" \ + "popf" \ + "rcl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcl_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux rcl_long_asm = \ + "push [edi]" \ + "popf" \ + "rcl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rcr_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux rcr_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcr_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux rcr_word_asm = \ + "push [edi]" \ + "popf" \ + "rcr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcr_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux rcr_long_asm = \ + "push [edi]" \ + "popf" \ + "rcr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rol_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux rol_byte_asm = \ + "push [edi]" \ + "popf" \ + "rol al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rol_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux rol_word_asm = \ + "push [edi]" \ + "popf" \ + "rol ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rol_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux rol_long_asm = \ + "push [edi]" \ + "popf" \ + "rol eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 ror_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux ror_byte_asm = \ + "push [edi]" \ + "popf" \ + "ror al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 ror_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux ror_word_asm = \ + "push [edi]" \ + "popf" \ + "ror ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 ror_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux ror_long_asm = \ + "push [edi]" \ + "popf" \ + "ror eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shl_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux shl_byte_asm = \ + "push [edi]" \ + "popf" \ + "shl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shl_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux shl_word_asm = \ + "push [edi]" \ + "popf" \ + "shl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shl_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux shl_long_asm = \ + "push [edi]" \ + "popf" \ + "shl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shr_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux shr_byte_asm = \ + "push [edi]" \ + "popf" \ + "shr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shr_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux shr_word_asm = \ + "push [edi]" \ + "popf" \ + "shr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shr_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux shr_long_asm = \ + "push [edi]" \ + "popf" \ + "shr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 sar_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux sar_byte_asm = \ + "push [edi]" \ + "popf" \ + "sar al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 sar_word_asm(u32 * flags, u16 d, u8 s); + +#pragma aux sar_word_asm = \ + "push [edi]" \ + "popf" \ + "sar ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 sar_long_asm(u32 * flags, u32 d, u8 s); + +#pragma aux sar_long_asm = \ + "push [edi]" \ + "popf" \ + "sar eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u16 shld_word_asm(u32 * flags, u16 d, u16 fill, u8 s); + +#pragma aux shld_word_asm = \ + "push [edi]" \ + "popf" \ + "shld ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shld_long_asm(u32 * flags, u32 d, u32 fill, u8 s); + +#pragma aux shld_long_asm = \ + "push [edi]" \ + "popf" \ + "shld eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u16 shrd_word_asm(u32 * flags, u16 d, u16 fill, u8 s); + +#pragma aux shrd_word_asm = \ + "push [edi]" \ + "popf" \ + "shrd ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shrd_long_asm(u32 * flags, u32 d, u32 fill, u8 s); + +#pragma aux shrd_long_asm = \ + "push [edi]" \ + "popf" \ + "shrd eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u8 sbb_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux sbb_byte_asm = \ + "push [edi]" \ + "popf" \ + "sbb al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sbb_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux sbb_word_asm = \ + "push [edi]" \ + "popf" \ + "sbb ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sbb_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux sbb_long_asm = \ + "push [edi]" \ + "popf" \ + "sbb eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 sub_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux sub_byte_asm = \ + "push [edi]" \ + "popf" \ + "sub al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sub_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux sub_word_asm = \ + "push [edi]" \ + "popf" \ + "sub ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sub_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux sub_long_asm = \ + "push [edi]" \ + "popf" \ + "sub eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void test_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux test_byte_asm = \ + "push [edi]" \ + "popf" \ + "test al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + modify exact [al bl]; + +void test_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux test_word_asm = \ + "push [edi]" \ + "popf" \ + "test ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + modify exact [ax bx]; + +void test_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux test_long_asm = \ + "push [edi]" \ + "popf" \ + "test eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + modify exact [eax ebx]; + +u8 xor_byte_asm(u32 * flags, u8 d, u8 s); + +#pragma aux xor_byte_asm = \ + "push [edi]" \ + "popf" \ + "xor al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 xor_word_asm(u32 * flags, u16 d, u16 s); + +#pragma aux xor_word_asm = \ + "push [edi]" \ + "popf" \ + "xor ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 xor_long_asm(u32 * flags, u32 d, u32 s); + +#pragma aux xor_long_asm = \ + "push [edi]" \ + "popf" \ + "xor eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void imul_byte_asm(u32 * flags, u16 * ax, u8 d, u8 s); + +#pragma aux imul_byte_asm = \ + "push [edi]" \ + "popf" \ + "imul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void imul_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 d, u16 s); + +#pragma aux imul_word_asm = \ + "push [edi]" \ + "popf" \ + "imul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void imul_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 d, u32 s); + +#pragma aux imul_long_asm = \ + "push [edi]" \ + "popf" \ + "imul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void mul_byte_asm(u32 * flags, u16 * ax, u8 d, u8 s); + +#pragma aux mul_byte_asm = \ + "push [edi]" \ + "popf" \ + "mul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void mul_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 d, u16 s); + +#pragma aux mul_word_asm = \ + "push [edi]" \ + "popf" \ + "mul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void mul_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 d, u32 s); + +#pragma aux mul_long_asm = \ + "push [edi]" \ + "popf" \ + "mul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void idiv_byte_asm(u32 * flags, u8 * al, u8 * ah, u16 d, u8 s); + +#pragma aux idiv_byte_asm = \ + "push [edi]" \ + "popf" \ + "idiv bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void idiv_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 dlo, u16 dhi, u16 s); + +#pragma aux idiv_word_asm = \ + "push [edi]" \ + "popf" \ + "idiv bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void idiv_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 dlo, u32 dhi, u32 s); + +#pragma aux idiv_long_asm = \ + "push [edi]" \ + "popf" \ + "idiv ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +void div_byte_asm(u32 * flags, u8 * al, u8 * ah, u16 d, u8 s); + +#pragma aux div_byte_asm = \ + "push [edi]" \ + "popf" \ + "div bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void div_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 dlo, u16 dhi, u16 s); + +#pragma aux div_word_asm = \ + "push [edi]" \ + "popf" \ + "div bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void div_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 dlo, u32 dhi, u32 s); + +#pragma aux div_long_asm = \ + "push [edi]" \ + "popf" \ + "div ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +#endif + +#endif /* __X86EMU_PRIM_ASM_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_ops.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_ops.h new file mode 100644 index 0000000000..0f0e78d717 --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_ops.h @@ -0,0 +1,141 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for primitive operation functions. +* +****************************************************************************/ + +#ifndef __X86EMU_PRIM_OPS_H +#define __X86EMU_PRIM_OPS_H + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + u16 aaa_word(u16 d); + u16 aas_word(u16 d); + u16 aad_word(u16 d); + u16 aam_word(u8 d); + u8 adc_byte(u8 d, u8 s); + u16 adc_word(u16 d, u16 s); + u32 adc_long(u32 d, u32 s); + u8 add_byte(u8 d, u8 s); + u16 add_word(u16 d, u16 s); + u32 add_long(u32 d, u32 s); + u8 and_byte(u8 d, u8 s); + u16 and_word(u16 d, u16 s); + u32 and_long(u32 d, u32 s); + u8 cmp_byte(u8 d, u8 s); + u16 cmp_word(u16 d, u16 s); + u32 cmp_long(u32 d, u32 s); + u8 daa_byte(u8 d); + u8 das_byte(u8 d); + u8 dec_byte(u8 d); + u16 dec_word(u16 d); + u32 dec_long(u32 d); + u8 inc_byte(u8 d); + u16 inc_word(u16 d); + u32 inc_long(u32 d); + u8 or_byte(u8 d, u8 s); + u16 or_word(u16 d, u16 s); + u32 or_long(u32 d, u32 s); + u8 neg_byte(u8 s); + u16 neg_word(u16 s); + u32 neg_long(u32 s); + u8 not_byte(u8 s); + u16 not_word(u16 s); + u32 not_long(u32 s); + u8 rcl_byte(u8 d, u8 s); + u16 rcl_word(u16 d, u8 s); + u32 rcl_long(u32 d, u8 s); + u8 rcr_byte(u8 d, u8 s); + u16 rcr_word(u16 d, u8 s); + u32 rcr_long(u32 d, u8 s); + u8 rol_byte(u8 d, u8 s); + u16 rol_word(u16 d, u8 s); + u32 rol_long(u32 d, u8 s); + u8 ror_byte(u8 d, u8 s); + u16 ror_word(u16 d, u8 s); + u32 ror_long(u32 d, u8 s); + u8 shl_byte(u8 d, u8 s); + u16 shl_word(u16 d, u8 s); + u32 shl_long(u32 d, u8 s); + u8 shr_byte(u8 d, u8 s); + u16 shr_word(u16 d, u8 s); + u32 shr_long(u32 d, u8 s); + u8 sar_byte(u8 d, u8 s); + u16 sar_word(u16 d, u8 s); + u32 sar_long(u32 d, u8 s); + u16 shld_word(u16 d, u16 fill, u8 s); + u32 shld_long(u32 d, u32 fill, u8 s); + u16 shrd_word(u16 d, u16 fill, u8 s); + u32 shrd_long(u32 d, u32 fill, u8 s); + u8 sbb_byte(u8 d, u8 s); + u16 sbb_word(u16 d, u16 s); + u32 sbb_long(u32 d, u32 s); + u8 sub_byte(u8 d, u8 s); + u16 sub_word(u16 d, u16 s); + u32 sub_long(u32 d, u32 s); + void test_byte(u8 d, u8 s); + void test_word(u16 d, u16 s); + void test_long(u32 d, u32 s); + u8 xor_byte(u8 d, u8 s); + u16 xor_word(u16 d, u16 s); + u32 xor_long(u32 d, u32 s); + void imul_byte(u8 s); + void imul_word(u16 s); + void imul_long(u32 s); + void imul_long_direct(u32 * res_lo, u32 * res_hi, u32 d, u32 s); + void mul_byte(u8 s); + void mul_word(u16 s); + void mul_long(u32 s); + void idiv_byte(u8 s); + void idiv_word(u16 s); + void idiv_long(u32 s); + void div_byte(u8 s); + void div_word(u16 s); + void div_long(u32 s); + void ins(int size); + void outs(int size); + u16 mem_access_word(int addr); + void push_word(u16 w); + void push_long(u32 w); + u16 pop_word(void); + u32 pop_long(void); + void cpuid(void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_PRIM_OPS_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_x86_gcc.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_x86_gcc.h new file mode 100644 index 0000000000..646ec9defe --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/prim_x86_gcc.h @@ -0,0 +1,77 @@ +/**************************************************************************** +* +* Inline helpers for x86emu +* +* Copyright (C) 2008 Bart Trojanowski, Symbio Technologies, LLC +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: GNU C +* Environment: GCC on i386 or x86-64 +* Developer: Bart Trojanowski +* +* Description: This file defines a few x86 macros that can be used by the +* emulator to execute native instructions. +* +* For PIC vs non-PIC code refer to: +* http://sam.zoy.org/blog/2007-04-13-shlib-with-non-pic-code-have-inline-assembly-and-pic-mix-well +* +****************************************************************************/ +#ifndef __X86EMU_PRIM_X86_GCC_H +#define __X86EMU_PRIM_X86_GCC_H + +#include "x86emu/types.h" + +#if !defined(__GNUC__) || !(defined (__i386__) || defined(__i386) || defined(__AMD64__) || defined(__amd64__)) +#error This file is intended to be used by gcc on i386 or x86-64 system +#endif + +#if defined(__PIC__) && defined(__i386__) + +#define X86EMU_HAS_HW_CPUID 1 +static inline void +hw_cpuid(u32 * a, u32 * b, u32 * c, u32 * d) +{ + __asm__ __volatile__("pushl %%ebx \n\t" + "cpuid \n\t" + "movl %%ebx, %1 \n\t" + "popl %%ebx \n\t":"=a"(*a), "=r"(*b), + "=c"(*c), "=d"(*d) + :"a"(*a), "c"(*c) + :"cc"); +} + +#else /* ! (__PIC__ && __i386__) */ + +#define x86EMU_HAS_HW_CPUID 1 +static inline void +hw_cpuid(u32 * a, u32 * b, u32 * c, u32 * d) +{ + __asm__ __volatile__("cpuid":"=a"(*a), "=b"(*b), "=c"(*c), "=d"(*d) + :"a"(*a), "c"(*c) + :"cc"); +} + +#endif /* __PIC__ && __i386__ */ + +#endif /* __X86EMU_PRIM_X86_GCC_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/regs.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/regs.h new file mode 100644 index 0000000000..203a442adc --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/regs.h @@ -0,0 +1,342 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for x86 register definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_REGS_H +#define __X86EMU_REGS_H + +/*---------------------- Macros and type definitions ----------------------*/ + +#ifdef PACK +#pragma PACK +#endif + +/* + * General EAX, EBX, ECX, EDX type registers. Note that for + * portability, and speed, the issue of byte swapping is not addressed + * in the registers. All registers are stored in the default format + * available on the host machine. The only critical issue is that the + * registers should line up EXACTLY in the same manner as they do in + * the 386. That is: + * + * EAX & 0xff === AL + * EAX & 0xffff == AX + * + * etc. The result is that alot of the calculations can then be + * done using the native instruction set fully. + */ + +#ifdef __BIG_ENDIAN__ + +typedef struct { + u32 e_reg; +} I32_reg_t; + +typedef struct { + u16 filler0, x_reg; +} I16_reg_t; + +typedef struct { + u8 filler0, filler1, h_reg, l_reg; +} I8_reg_t; + +#else /* !__BIG_ENDIAN__ */ + +typedef struct { + u32 e_reg; +} I32_reg_t; + +typedef struct { + u16 x_reg; +} I16_reg_t; + +typedef struct { + u8 l_reg, h_reg; +} I8_reg_t; + +#endif /* BIG_ENDIAN */ + +typedef union { + I32_reg_t I32_reg; + I16_reg_t I16_reg; + I8_reg_t I8_reg; +} i386_general_register; + +struct i386_general_regs { + i386_general_register A, B, C, D; +}; + +typedef struct i386_general_regs Gen_reg_t; + +struct i386_special_regs { + i386_general_register SP, BP, SI, DI, IP; + u32 FLAGS; +}; + +/* + * Segment registers here represent the 16 bit quantities + * CS, DS, ES, SS. + */ + +struct i386_segment_regs { + u16 CS, DS, SS, ES, FS, GS; +}; + +/* 8 bit registers */ +#define R_AH gen.A.I8_reg.h_reg +#define R_AL gen.A.I8_reg.l_reg +#define R_BH gen.B.I8_reg.h_reg +#define R_BL gen.B.I8_reg.l_reg +#define R_CH gen.C.I8_reg.h_reg +#define R_CL gen.C.I8_reg.l_reg +#define R_DH gen.D.I8_reg.h_reg +#define R_DL gen.D.I8_reg.l_reg + +/* 16 bit registers */ +#define R_AX gen.A.I16_reg.x_reg +#define R_BX gen.B.I16_reg.x_reg +#define R_CX gen.C.I16_reg.x_reg +#define R_DX gen.D.I16_reg.x_reg + +/* 32 bit extended registers */ +#define R_EAX gen.A.I32_reg.e_reg +#define R_EBX gen.B.I32_reg.e_reg +#define R_ECX gen.C.I32_reg.e_reg +#define R_EDX gen.D.I32_reg.e_reg + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_ESP spc.SP.I32_reg.e_reg +#define R_EBP spc.BP.I32_reg.e_reg +#define R_ESI spc.SI.I32_reg.e_reg +#define R_EDI spc.DI.I32_reg.e_reg +#define R_EIP spc.IP.I32_reg.e_reg +#define R_EFLG spc.FLAGS + +/* segment registers */ +#define R_CS seg.CS +#define R_DS seg.DS +#define R_SS seg.SS +#define R_ES seg.ES +#define R_FS seg.FS +#define R_GS seg.GS + +/* flag conditions */ +#define FB_CF 0x0001 /* CARRY flag */ +#define FB_PF 0x0004 /* PARITY flag */ +#define FB_AF 0x0010 /* AUX flag */ +#define FB_ZF 0x0040 /* ZERO flag */ +#define FB_SF 0x0080 /* SIGN flag */ +#define FB_TF 0x0100 /* TRAP flag */ +#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define FB_DF 0x0400 /* DIR flag */ +#define FB_OF 0x0800 /* OVERFLOW flag */ + +/* 80286 and above always have bit#1 set */ +#define F_ALWAYS_ON (0x0002) /* flag bits always on */ + +/* + * Define a mask for only those flag bits we will ever pass back + * (via PUSHF) + */ +#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF) + +/* following bits masked in to a 16bit quantity */ + +#define F_CF 0x0001 /* CARRY flag */ +#define F_PF 0x0004 /* PARITY flag */ +#define F_AF 0x0010 /* AUX flag */ +#define F_ZF 0x0040 /* ZERO flag */ +#define F_SF 0x0080 /* SIGN flag */ +#define F_TF 0x0100 /* TRAP flag */ +#define F_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define F_DF 0x0400 /* DIR flag */ +#define F_OF 0x0800 /* OVERFLOW flag */ + +#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag)) +#define SET_FLAG(flag) (M.x86.R_FLG |= (flag)) +#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag)) +#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag)) +#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0) + +#define CONDITIONAL_SET_FLAG(COND,FLAG) \ + if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG) + +#define F_PF_CALC 0x010000 /* PARITY flag has been calced */ +#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ +#define F_SF_CALC 0x040000 /* SIGN flag has been calced */ + +#define F_ALL_CALC 0xff0000 /* All have been calced */ + +/* + * Emulator machine state. + * Segment usage control. + */ +#define SYSMODE_SEG_DS_SS 0x00000001 +#define SYSMODE_SEGOVR_CS 0x00000002 +#define SYSMODE_SEGOVR_DS 0x00000004 +#define SYSMODE_SEGOVR_ES 0x00000008 +#define SYSMODE_SEGOVR_FS 0x00000010 +#define SYSMODE_SEGOVR_GS 0x00000020 +#define SYSMODE_SEGOVR_SS 0x00000040 +#define SYSMODE_PREFIX_REPE 0x00000080 +#define SYSMODE_PREFIX_REPNE 0x00000100 +#define SYSMODE_PREFIX_DATA 0x00000200 +#define SYSMODE_PREFIX_ADDR 0x00000400 +#define SYSMODE_INTR_PENDING 0x10000000 +#define SYSMODE_EXTRN_INTR 0x20000000 +#define SYSMODE_HALTED 0x40000000 + +#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS) +#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS | \ + SYSMODE_PREFIX_DATA | \ + SYSMODE_PREFIX_ADDR) + +#define INTR_SYNCH 0x1 +#define INTR_ASYNCH 0x2 +#define INTR_HALTED 0x4 + +typedef struct { + struct i386_general_regs gen; + struct i386_special_regs spc; + struct i386_segment_regs seg; + /* + * MODE contains information on: + * REPE prefix 2 bits repe,repne + * SEGMENT overrides 5 bits normal,DS,SS,CS,ES + * Delayed flag set 3 bits (zero, signed, parity) + * reserved 6 bits + * interrupt # 8 bits instruction raised interrupt + * BIOS video segregs 4 bits + * Interrupt Pending 1 bits + * Extern interrupt 1 bits + * Halted 1 bits + */ + u32 mode; + volatile int intr; /* mask of pending interrupts */ + int debug; +#ifdef DEBUG + int check; + u16 saved_ip; + u16 saved_cs; + int enc_pos; + int enc_str_pos; + char decode_buf[32]; /* encoded byte stream */ + char decoded_buf[256]; /* disassembled strings */ +#endif + u8 intno; + u8 __pad[3]; +} X86EMU_regs; + +/**************************************************************************** +REMARKS: +Structure maintaining the emulator machine state. + +MEMBERS: +mem_base - Base real mode memory for the emulator +mem_size - Size of the real mode memory block for the emulator +private - private data pointer +x86 - X86 registers +****************************************************************************/ +typedef struct { + unsigned long mem_base; + unsigned long mem_size; +#ifdef __cplusplus + void *_private; +#else + void *private; +#endif + X86EMU_regs x86; +} X86EMU_sysEnv; + +#ifdef END_PACK +#pragma END_PACK +#endif + +/*----------------------------- Global Variables --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* Global emulator machine state. + * + * We keep it global to avoid pointer dereferences in the code for speed. + */ + + extern X86EMU_sysEnv _X86EMU_env; +#define M _X86EMU_env + +/*-------------------------- Function Prototypes --------------------------*/ + +/* Function to log information at runtime */ + +#include +#define printk(fmt...) dprintf(fmt) +// void printk(const char *fmt, ...); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_REGS_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/types.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/types.h new file mode 100644 index 0000000000..5a6ef01f8b --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/types.h @@ -0,0 +1,80 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for x86 emulator type definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_TYPES_H +#define __X86EMU_TYPES_H + +#ifndef NO_SYS_HEADERS +#include +#endif + +/* + * The following kludge is an attempt to work around typedef conflicts with + * . + */ +#define u8 x86emuu8 +#define u16 x86emuu16 +#define u32 x86emuu32 +#define u64 x86emuu64 +#define s8 x86emus8 +#define s16 x86emus16 +#define s32 x86emus32 +#define s64 x86emus64 +#define uint x86emuuint +#define sint x86emusint + +/*---------------------- Macros and type definitions ----------------------*/ + +#include + +typedef uint8_t u8; +typedef uint16_t u16; +typedef uint32_t u32; +typedef uint64_t u64; + +typedef int8_t s8; +typedef int16_t s16; +typedef int32_t s32; +typedef int64_t s64; + +typedef unsigned int uint; +typedef int sint; + +typedef u16 X86EMU_pioAddr; + +#endif /* __X86EMU_TYPES_H */ diff --git a/src/add-ons/kernel/generic/bios/x86emu/x86emu/x86emui.h b/src/add-ons/kernel/generic/bios/x86emu/x86emu/x86emui.h new file mode 100644 index 0000000000..f11dc102ff --- /dev/null +++ b/src/add-ons/kernel/generic/bios/x86emu/x86emu/x86emui.h @@ -0,0 +1,100 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for system specific functions. These functions +* are always compiled and linked in the OS depedent libraries, +* and never in a binary portable driver. +* +****************************************************************************/ + +#ifndef __X86EMU_X86EMUI_H +#define __X86EMU_X86EMUI_H + +/* If we are compiling in C++ mode, we can compile some functions as + * inline to increase performance (however the code size increases quite + * dramatically in this case). + */ + +#if defined(__cplusplus) && !defined(_NO_INLINE) +#define _INLINE inline +#else +#define _INLINE static +#endif + +/* Get rid of unused parameters in C++ compilation mode */ + +#ifdef __cplusplus +#define X86EMU_UNUSED(v) +#else +#define X86EMU_UNUSED(v) v +#endif + +#include "x86emu.h" +#include "x86emu/regs.h" +#include "x86emu/debug.h" +#include "x86emu/decode.h" +#include "x86emu/ops.h" +#include "x86emu/prim_ops.h" +#include "x86emu/fpu.h" +#include "x86emu/fpu_regs.h" + +#ifndef NO_SYS_HEADERS +#include +#include +#include +#endif +/*--------------------------- Inline Functions ----------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + extern u8(X86APIP sys_rdb) (u32 addr); + extern u16(X86APIP sys_rdw) (u32 addr); + extern u32(X86APIP sys_rdl) (u32 addr); + extern void (X86APIP sys_wrb) (u32 addr, u8 val); + extern void (X86APIP sys_wrw) (u32 addr, u16 val); + extern void (X86APIP sys_wrl) (u32 addr, u32 val); + + extern u8(X86APIP sys_inb) (X86EMU_pioAddr addr); + extern u16(X86APIP sys_inw) (X86EMU_pioAddr addr); + extern u32(X86APIP sys_inl) (X86EMU_pioAddr addr); + extern void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val); + extern void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val); + extern void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_X86EMUI_H */