Bochs/bochs/cpu/cpudb/pentium_mmx.cc
Stanislav Shwartsman b8b63ac6ea compile CPUDB to separate library
reduce compile-time dependencies
2011-08-18 18:55:22 +00:00

176 lines
5.4 KiB
C++
Executable File

/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2011 Stanislav Shwartsman
// 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
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
#include "bochs.h"
#include "cpu.h"
#include "pentium_mmx.h"
#define LOG_THIS cpu->
#if BX_CPU_LEVEL == 5
pentium_mmx_t::pentium_mmx_t(BX_CPU_C *cpu): bx_cpuid_t(cpu)
{
if (BX_SUPPORT_X86_64)
BX_PANIC(("x86-64 should be disabled for Pentium MMX configuration"));
if (BX_CPU_LEVEL != 5)
BX_PANIC(("Pentium MMX should be compiled with BX_CPU_LEVEL=5"));
}
void pentium_mmx_t::get_cpuid_leaf(Bit32u function, Bit32u subfunction, cpuid_function_t *leaf) const
{
switch(function) {
case 0x00000000:
get_std_cpuid_leaf_0(leaf);
return;
case 0x00000001:
default:
get_std_cpuid_leaf_1(leaf);
return;
}
}
Bit32u pentium_mmx_t::get_isa_extensions_bitmask(void) const
{
return BX_CPU_X87 |
BX_CPU_486 |
BX_CPU_PENTIUM |
BX_CPU_MMX;
}
Bit32u pentium_mmx_t::get_cpu_extensions_bitmask(void) const
{
return BX_CPU_DEBUG_EXTENSIONS |
BX_CPU_VME |
#if BX_PHY_ADDRESS_LONG
BX_CPU_PSE36 |
#endif
BX_CPU_PSE;
}
// leaf 0x00000000 //
void pentium_mmx_t::get_std_cpuid_leaf_0(cpuid_function_t *leaf) const
{
static const char* vendor_string = "GenuineIntel";
// EAX: highest std function understood by CPUID
// EBX: vendor ID string
// EDX: vendor ID string
// ECX: vendor ID string
leaf->eax = 0x1;
// CPUID vendor string (e.g. GenuineIntel, AuthenticAMD, CentaurHauls, ...)
memcpy(&(leaf->ebx), vendor_string, 4);
memcpy(&(leaf->edx), vendor_string + 4, 4);
memcpy(&(leaf->ecx), vendor_string + 8, 4);
#ifdef BX_BIG_ENDIAN
leaf->ebx = bx_bswap32(leaf->ebx);
leaf->ecx = bx_bswap32(leaf->ecx);
leaf->edx = bx_bswap32(leaf->edx);
#endif
}
// leaf 0x00000001 //
void pentium_mmx_t::get_std_cpuid_leaf_1(cpuid_function_t *leaf) const
{
// EAX: CPU Version Information
// [3:0] Stepping ID
// [7:4] Model: starts at 1
// [11:8] Family: 4=486, 5=Pentium, 6=PPro, ...
// [13:12] Type: 0=OEM, 1=overdrive, 2=dual cpu, 3=reserved
// [19:16] Extended Model
// [27:20] Extended Family
leaf->eax = 0x00000543;
leaf->ebx = 0;
leaf->ecx = 0;
// EDX: Standard Feature Flags
// * [0:0] FPU on chip
// * [1:1] VME: Virtual-8086 Mode enhancements
// * [2:2] DE: Debug Extensions (I/O breakpoints)
// * [3:3] PSE: Page Size Extensions
// * [4:4] TSC: Time Stamp Counter
// * [5:5] MSR: RDMSR and WRMSR support
// [6:6] PAE: Physical Address Extensions
// * [7:7] MCE: Machine Check Exception
// * [8:8] CXS: CMPXCHG8B instruction
// [9:9] APIC: APIC on Chip
// [10:10] Reserved
// [11:11] SYSENTER/SYSEXIT support
// [12:12] MTRR: Memory Type Range Reg
// [13:13] PGE/PTE Global Bit
// [14:14] MCA: Machine Check Architecture
// [15:15] CMOV: Cond Mov/Cmp Instructions
// [16:16] PAT: Page Attribute Table
// [17:17] PSE-36: Physical Address Extensions
// [18:18] PSN: Processor Serial Number
// [19:19] CLFLUSH: CLFLUSH Instruction support
// [20:20] Reserved
// [21:21] DS: Debug Store
// [22:22] ACPI: Thermal Monitor and Software Controlled Clock Facilities
// * [23:23] MMX Technology
// [24:24] FXSR: FXSAVE/FXRSTOR (also indicates CR4.OSFXSR is available)
// [25:25] SSE: SSE Extensions
// [26:26] SSE2: SSE2 Extensions
// [27:27] Self Snoop
// [28:28] Hyper Threading Technology
// [29:29] TM: Thermal Monitor
// [30:30] Reserved
// [31:31] PBE: Pending Break Enable
leaf->edx = BX_CPUID_STD_X87 |
BX_CPUID_STD_VME |
BX_CPUID_STD_DEBUG_EXTENSIONS |
BX_CPUID_STD_PSE |
BX_CPUID_STD_TSC |
BX_CPUID_STD_MSR |
BX_CPUID_STD_MCE |
BX_CPUID_STD_CMPXCHG8B |
#if BX_PHY_ADDRESS_LONG
BX_CPUID_STD_PSE36 |
#endif
BX_CPUID_STD_MMX;
#if BX_SUPPORT_APIC
// if MSR_APICBASE APIC Global Enable bit has been cleared,
// the CPUID feature flag for the APIC is set to 0.
if (cpu->msr.apicbase & 0x800)
leaf->edx |= BX_CPUID_STD_APIC; // APIC on chip
#endif
}
void pentium_mmx_t::dump_cpuid(void) const
{
struct cpuid_function_t leaf;
for (unsigned n=0; n<=0x1; n++) {
get_cpuid_leaf(n, 0x00000000, &leaf);
BX_INFO(("CPUID[0x%08x]: %08x %08x %08x %08x", n, leaf.eax, leaf.ebx, leaf.ecx, leaf.edx));
}
}
bx_cpuid_t *create_pentium_mmx_cpuid(BX_CPU_C *cpu) { return new pentium_mmx_t(cpu); }
#endif