Bochs/bochs/instrument/example0/instrument.cc

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/////////////////////////////////////////////////////////////////////////
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// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2006-2015 Stanislav Shwartsman
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// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <assert.h>
#include "bochs.h"
#include "cpu/cpu.h"
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#include "disasm/disasm.h"
// maximum size of an instruction
#define MAX_OPCODE_LENGTH 16
// maximum physical addresses an instruction can generate
#define MAX_DATA_ACCESSES 1024
// Use this variable to turn on/off collection of instrumentation data
// If you are not using the debugger to turn this on/off, then possibly
// start this at 1 instead of 0.
- Apply patch.replace-Boolean rev 1.3. Every "Boolean" is now changed to a "bx_bool" which is always defined as Bit32u on all platforms. In Carbon specific code, Boolean is still used because the Carbon header files define it to unsigned char. - this fixes bug [ 623152 ] MacOSX: Triple Exception Booting win95. The bug was that some code in Bochs depends on Boolean to be a 32 bit value. (This should be fixed, but I don't know all the places where it needs to be fixed yet.) Because Carbon defined Boolean as an unsigned char, Bochs just followed along and used the unsigned char definition to avoid compile problems. This exposed the dependency on 32 bit Boolean on MacOS X only and led to major simulation problems, that could only be reproduced and debugged on that platform. - On the mailing list we debated whether to make all Booleans into "bool" or our own type. I chose bx_bool for several reasons. 1. Unlike C++'s bool, we can guarantee that bx_bool is the same size on all platforms, which makes it much less likely to have more platform-specific simulation differences in the future. (I spent hours on a borrowed MacOSX machine chasing bug 618388 before discovering that different sized Booleans were the problem, and I don't want to repeat that.) 2. We still have at least one dependency on 32 bit Booleans which must be fixed some time, but I don't want to risk introducing new bugs into the simulation just before the 2.0 release. Modified Files: bochs.h config.h.in gdbstub.cc logio.cc main.cc pc_system.cc pc_system.h plugin.cc plugin.h bios/rombios.c cpu/apic.cc cpu/arith16.cc cpu/arith32.cc cpu/arith64.cc cpu/arith8.cc cpu/cpu.cc cpu/cpu.h cpu/ctrl_xfer16.cc cpu/ctrl_xfer32.cc cpu/ctrl_xfer64.cc cpu/data_xfer16.cc cpu/data_xfer32.cc cpu/data_xfer64.cc cpu/debugstuff.cc cpu/exception.cc cpu/fetchdecode.cc cpu/flag_ctrl_pro.cc cpu/init.cc cpu/io_pro.cc cpu/lazy_flags.cc cpu/lazy_flags.h cpu/mult16.cc cpu/mult32.cc cpu/mult64.cc cpu/mult8.cc cpu/paging.cc cpu/proc_ctrl.cc cpu/segment_ctrl_pro.cc cpu/stack_pro.cc cpu/tasking.cc debug/dbg_main.cc debug/debug.h debug/sim2.cc disasm/dis_decode.cc disasm/disasm.h doc/docbook/Makefile docs-html/cosimulation.html fpu/wmFPUemu_glue.cc gui/amigaos.cc gui/beos.cc gui/carbon.cc gui/gui.cc gui/gui.h gui/keymap.cc gui/keymap.h gui/macintosh.cc gui/nogui.cc gui/rfb.cc gui/sdl.cc gui/siminterface.cc gui/siminterface.h gui/term.cc gui/win32.cc gui/wx.cc gui/wxmain.cc gui/wxmain.h gui/x.cc instrument/example0/instrument.cc instrument/example0/instrument.h instrument/example1/instrument.cc instrument/example1/instrument.h instrument/stubs/instrument.cc instrument/stubs/instrument.h iodev/cdrom.cc iodev/cdrom.h iodev/cdrom_osx.cc iodev/cmos.cc iodev/devices.cc iodev/dma.cc iodev/dma.h iodev/eth_arpback.cc iodev/eth_packetmaker.cc iodev/eth_packetmaker.h iodev/floppy.cc iodev/floppy.h iodev/guest2host.h iodev/harddrv.cc iodev/harddrv.h iodev/ioapic.cc iodev/ioapic.h iodev/iodebug.cc iodev/iodev.h iodev/keyboard.cc iodev/keyboard.h iodev/ne2k.h iodev/parallel.h iodev/pci.cc iodev/pci.h iodev/pic.h iodev/pit.cc iodev/pit.h iodev/pit_wrap.cc iodev/pit_wrap.h iodev/sb16.cc iodev/sb16.h iodev/serial.cc iodev/serial.h iodev/vga.cc iodev/vga.h memory/memory.h memory/misc_mem.cc
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static bx_bool active = 1;
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static disassembler bx_disassembler;
static struct instruction_t {
bx_bool ready; // is current instruction ready to be printed
unsigned opcode_length;
Bit8u opcode[MAX_OPCODE_LENGTH];
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bx_bool is32, is64;
unsigned num_data_accesses;
struct {
bx_address laddr; // linear address
bx_phy_address paddr; // physical address
unsigned rw; // BX_READ, BX_WRITE or BX_RW
unsigned size; // 1 .. 32
} data_access[MAX_DATA_ACCESSES];
- Apply patch.replace-Boolean rev 1.3. Every "Boolean" is now changed to a "bx_bool" which is always defined as Bit32u on all platforms. In Carbon specific code, Boolean is still used because the Carbon header files define it to unsigned char. - this fixes bug [ 623152 ] MacOSX: Triple Exception Booting win95. The bug was that some code in Bochs depends on Boolean to be a 32 bit value. (This should be fixed, but I don't know all the places where it needs to be fixed yet.) Because Carbon defined Boolean as an unsigned char, Bochs just followed along and used the unsigned char definition to avoid compile problems. This exposed the dependency on 32 bit Boolean on MacOS X only and led to major simulation problems, that could only be reproduced and debugged on that platform. - On the mailing list we debated whether to make all Booleans into "bool" or our own type. I chose bx_bool for several reasons. 1. Unlike C++'s bool, we can guarantee that bx_bool is the same size on all platforms, which makes it much less likely to have more platform-specific simulation differences in the future. (I spent hours on a borrowed MacOSX machine chasing bug 618388 before discovering that different sized Booleans were the problem, and I don't want to repeat that.) 2. We still have at least one dependency on 32 bit Booleans which must be fixed some time, but I don't want to risk introducing new bugs into the simulation just before the 2.0 release. Modified Files: bochs.h config.h.in gdbstub.cc logio.cc main.cc pc_system.cc pc_system.h plugin.cc plugin.h bios/rombios.c cpu/apic.cc cpu/arith16.cc cpu/arith32.cc cpu/arith64.cc cpu/arith8.cc cpu/cpu.cc cpu/cpu.h cpu/ctrl_xfer16.cc cpu/ctrl_xfer32.cc cpu/ctrl_xfer64.cc cpu/data_xfer16.cc cpu/data_xfer32.cc cpu/data_xfer64.cc cpu/debugstuff.cc cpu/exception.cc cpu/fetchdecode.cc cpu/flag_ctrl_pro.cc cpu/init.cc cpu/io_pro.cc cpu/lazy_flags.cc cpu/lazy_flags.h cpu/mult16.cc cpu/mult32.cc cpu/mult64.cc cpu/mult8.cc cpu/paging.cc cpu/proc_ctrl.cc cpu/segment_ctrl_pro.cc cpu/stack_pro.cc cpu/tasking.cc debug/dbg_main.cc debug/debug.h debug/sim2.cc disasm/dis_decode.cc disasm/disasm.h doc/docbook/Makefile docs-html/cosimulation.html fpu/wmFPUemu_glue.cc gui/amigaos.cc gui/beos.cc gui/carbon.cc gui/gui.cc gui/gui.h gui/keymap.cc gui/keymap.h gui/macintosh.cc gui/nogui.cc gui/rfb.cc gui/sdl.cc gui/siminterface.cc gui/siminterface.h gui/term.cc gui/win32.cc gui/wx.cc gui/wxmain.cc gui/wxmain.h gui/x.cc instrument/example0/instrument.cc instrument/example0/instrument.h instrument/example1/instrument.cc instrument/example1/instrument.h instrument/stubs/instrument.cc instrument/stubs/instrument.h iodev/cdrom.cc iodev/cdrom.h iodev/cdrom_osx.cc iodev/cmos.cc iodev/devices.cc iodev/dma.cc iodev/dma.h iodev/eth_arpback.cc iodev/eth_packetmaker.cc iodev/eth_packetmaker.h iodev/floppy.cc iodev/floppy.h iodev/guest2host.h iodev/harddrv.cc iodev/harddrv.h iodev/ioapic.cc iodev/ioapic.h iodev/iodebug.cc iodev/iodev.h iodev/keyboard.cc iodev/keyboard.h iodev/ne2k.h iodev/parallel.h iodev/pci.cc iodev/pci.h iodev/pic.h iodev/pit.cc iodev/pit.h iodev/pit_wrap.cc iodev/pit_wrap.h iodev/sb16.cc iodev/sb16.h iodev/serial.cc iodev/serial.h iodev/vga.cc iodev/vga.h memory/memory.h memory/misc_mem.cc
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bx_bool is_branch;
bx_bool is_taken;
bx_address target_linear;
} *instruction;
static logfunctions *instrument_log = new logfunctions ();
#define LOG_THIS instrument_log->
void bx_instr_init_env(void) {}
void bx_instr_exit_env(void) {}
void bx_instr_initialize(unsigned cpu)
{
assert(cpu < BX_SMP_PROCESSORS);
if (instruction == NULL)
instruction = new struct instruction_t[BX_SMP_PROCESSORS];
fprintf(stderr, "Initialize cpu %u\n", cpu);
}
void bx_instr_reset(unsigned cpu, unsigned type)
{
instruction[cpu].ready = 0;
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instruction[cpu].num_data_accesses = 0;
instruction[cpu].is_branch = 0;
}
void bx_print_instruction(unsigned cpu, const instruction_t *i)
{
char disasm_tbuf[512]; // buffer for instruction disassembly
unsigned length = i->opcode_length, n;
bx_disassembler.disasm(i->is32, i->is64, 0, 0, i->opcode, disasm_tbuf);
if(length != 0)
{
fprintf(stderr, "----------------------------------------------------------\n");
fprintf(stderr, "CPU %u: %s\n", cpu, disasm_tbuf);
fprintf(stderr, "LEN %u\tBYTES: ", length);
for(n=0;n < length;n++) fprintf(stderr, "%02x", i->opcode[n]);
if(i->is_branch)
{
fprintf(stderr, "\tBRANCH ");
if(i->is_taken)
fprintf(stderr, "TARGET " FMT_ADDRX " (TAKEN)", i->target_linear);
else
fprintf(stderr, "(NOT TAKEN)");
}
fprintf(stderr, "\n");
for(n=0;n < i->num_data_accesses;n++)
{
fprintf(stderr, "MEM ACCESS[%u]: 0x" FMT_ADDRX " (linear) 0x" FMT_PHY_ADDRX " (physical) %s SIZE: %d\n", n,
i->data_access[n].laddr,
i->data_access[n].paddr,
i->data_access[n].rw == BX_READ ? "RD":"WR",
i->data_access[n].size);
}
fprintf(stderr, "\n");
}
}
void bx_instr_before_execution(unsigned cpu, bxInstruction_c *bx_instr)
{
if (!active) return;
instruction_t *i = &instruction[cpu];
if (i->ready) bx_print_instruction(cpu, i);
// prepare instruction_t structure for new instruction
i->ready = 1;
i->num_data_accesses = 0;
i->is_branch = 0;
i->is32 = BX_CPU(cpu)->sregs[BX_SEG_REG_CS].cache.u.segment.d_b;
i->is64 = BX_CPU(cpu)->long64_mode();
i->opcode_length = bx_instr->ilen();
memcpy(i->opcode, bx_instr->get_opcode_bytes(), i->opcode_length);
}
void bx_instr_after_execution(unsigned cpu, bxInstruction_c *bx_instr)
{
if (!active) return;
instruction_t *i = &instruction[cpu];
if (i->ready) {
bx_print_instruction(cpu, i);
i->ready = 0;
}
}
static void branch_taken(unsigned cpu, bx_address new_eip)
{
if (!active || !instruction[cpu].ready) return;
instruction[cpu].is_branch = 1;
instruction[cpu].is_taken = 1;
// find linear address
instruction[cpu].target_linear = BX_CPU(cpu)->get_laddr(BX_SEG_REG_CS, new_eip);
}
void bx_instr_cnear_branch_taken(unsigned cpu, bx_address branch_eip, bx_address new_eip)
{
branch_taken(cpu, new_eip);
}
void bx_instr_cnear_branch_not_taken(unsigned cpu, bx_address branch_eip)
{
if (!active || !instruction[cpu].ready) return;
instruction[cpu].is_branch = 1;
instruction[cpu].is_taken = 0;
}
void bx_instr_ucnear_branch(unsigned cpu, unsigned what, bx_address branch_eip, bx_address new_eip)
{
branch_taken(cpu, new_eip);
}
void bx_instr_far_branch(unsigned cpu, unsigned what, Bit16u prev_cs, bx_address prev_eip, Bit16u new_cs, bx_address new_eip)
{
branch_taken(cpu, new_eip);
}
void bx_instr_interrupt(unsigned cpu, unsigned vector)
{
if(active)
{
fprintf(stderr, "CPU %u: interrupt %02xh\n", cpu, vector);
}
}
void bx_instr_exception(unsigned cpu, unsigned vector, unsigned error_code)
{
if(active)
{
fprintf(stderr, "CPU %u: exception %02xh, error_code = %x\n", cpu, vector, error_code);
}
}
void bx_instr_hwinterrupt(unsigned cpu, unsigned vector, Bit16u cs, bx_address eip)
{
if(active)
{
fprintf(stderr, "CPU %u: hardware interrupt %02xh\n", cpu, vector);
}
}
void bx_instr_lin_access(unsigned cpu, bx_address lin, bx_phy_address phy, unsigned len, unsigned rw)
{
if(!active || !instruction[cpu].ready) return;
unsigned index = instruction[cpu].num_data_accesses;
if (index < MAX_DATA_ACCESSES) {
instruction[cpu].data_access[index].laddr = lin;
instruction[cpu].data_access[index].paddr = phy;
instruction[cpu].data_access[index].rw = rw;
instruction[cpu].data_access[index].size = len;
instruction[cpu].num_data_accesses++;
index++;
}
}