* Copyright 2009-2012, Ingo Weinhold, ingo_weinhold@gmx.de.
* Copyright 2011-2014, Rene Gollent, rene@gollent.com.
* Distributed under the terms of the MIT License.
*/
#include "CpuStateX86.h"
#include <new>
#include <string.h>
#include "Register.h"
CpuStateX86::CpuStateX86()
:
fSetRegisters(),
fInterruptVector(0)
{
}
CpuStateX86::CpuStateX86(const x86_debug_cpu_state& state)
:
fSetRegisters(),
fInterruptVector(0)
{
SetIntRegister(X86_REGISTER_EIP, state.eip);
SetIntRegister(X86_REGISTER_ESP, state.user_esp);
SetIntRegister(X86_REGISTER_EBP, state.ebp);
SetIntRegister(X86_REGISTER_EAX, state.eax);
SetIntRegister(X86_REGISTER_EBX, state.ebx);
SetIntRegister(X86_REGISTER_ECX, state.ecx);
SetIntRegister(X86_REGISTER_EDX, state.edx);
SetIntRegister(X86_REGISTER_ESI, state.esi);
SetIntRegister(X86_REGISTER_EDI, state.edi);
SetIntRegister(X86_REGISTER_CS, state.cs);
SetIntRegister(X86_REGISTER_DS, state.ds);
SetIntRegister(X86_REGISTER_ES, state.es);
SetIntRegister(X86_REGISTER_FS, state.fs);
SetIntRegister(X86_REGISTER_GS, state.gs);
SetIntRegister(X86_REGISTER_SS, state.user_ss);
const x86_extended_registers& extended = state.extended_registers;
SetFloatRegister(X86_REGISTER_ST0,
(double)(*(long double*)(extended.fp_registers[0].value)));
SetFloatRegister(X86_REGISTER_ST1,
(double)(*(long double*)(extended.fp_registers[1].value)));
SetFloatRegister(X86_REGISTER_ST2,
(double)(*(long double*)(extended.fp_registers[2].value)));
SetFloatRegister(X86_REGISTER_ST3,
(double)(*(long double*)(extended.fp_registers[3].value)));
SetFloatRegister(X86_REGISTER_ST4,
(double)(*(long double*)(extended.fp_registers[4].value)));
SetFloatRegister(X86_REGISTER_ST5,
(double)(*(long double*)(extended.fp_registers[5].value)));
SetFloatRegister(X86_REGISTER_ST6,
(double)(*(long double*)(extended.fp_registers[6].value)));
SetFloatRegister(X86_REGISTER_ST7,
(double)(*(long double*)(extended.fp_registers[7].value)));
SetMMXRegister(X86_REGISTER_MM0, extended.mmx_registers[0].value);
SetMMXRegister(X86_REGISTER_MM1, extended.mmx_registers[1].value);
SetMMXRegister(X86_REGISTER_MM2, extended.mmx_registers[2].value);
SetMMXRegister(X86_REGISTER_MM3, extended.mmx_registers[3].value);
SetMMXRegister(X86_REGISTER_MM4, extended.mmx_registers[4].value);
SetMMXRegister(X86_REGISTER_MM5, extended.mmx_registers[5].value);
SetMMXRegister(X86_REGISTER_MM6, extended.mmx_registers[6].value);
SetMMXRegister(X86_REGISTER_MM7, extended.mmx_registers[7].value);
SetXMMRegister(X86_REGISTER_XMM0, extended.xmm_registers[0].value);
SetXMMRegister(X86_REGISTER_XMM1, extended.xmm_registers[1].value);
SetXMMRegister(X86_REGISTER_XMM2, extended.xmm_registers[2].value);
SetXMMRegister(X86_REGISTER_XMM3, extended.xmm_registers[3].value);
SetXMMRegister(X86_REGISTER_XMM4, extended.xmm_registers[4].value);
SetXMMRegister(X86_REGISTER_XMM5, extended.xmm_registers[5].value);
SetXMMRegister(X86_REGISTER_XMM6, extended.xmm_registers[6].value);
SetXMMRegister(X86_REGISTER_XMM7, extended.xmm_registers[7].value);
fInterruptVector = state.vector;
}
CpuStateX86::~CpuStateX86()
{
}
status_t
CpuStateX86::Clone(CpuState*& _clone) const
{
CpuStateX86* newState = new(std::nothrow) CpuStateX86();
if (newState == NULL)
return B_NO_MEMORY;
memcpy(newState->fIntRegisters, fIntRegisters, sizeof(fIntRegisters));
memcpy(newState->fFloatRegisters, fFloatRegisters,
sizeof(fFloatRegisters));
memcpy(newState->fMMXRegisters, fMMXRegisters, sizeof(fMMXRegisters));
memcpy(newState->fXMMRegisters, fXMMRegisters, sizeof(fXMMRegisters));
newState->fSetRegisters = fSetRegisters;
newState->fInterruptVector = fInterruptVector;
_clone = newState;
return B_OK;
}
status_t
CpuStateX86::UpdateDebugState(void* state, size_t size) const
{
if (size != sizeof(x86_debug_cpu_state))
return B_BAD_VALUE;
x86_debug_cpu_state* x86State = (x86_debug_cpu_state*)state;
x86State->eip = InstructionPointer();
x86State->user_esp = StackPointer();
x86State->ebp = StackFramePointer();
x86State->eax = IntRegisterValue(X86_REGISTER_EAX);
x86State->ebx = IntRegisterValue(X86_REGISTER_EBX);
x86State->ecx = IntRegisterValue(X86_REGISTER_ECX);
x86State->edx = IntRegisterValue(X86_REGISTER_EDX);
x86State->esi = IntRegisterValue(X86_REGISTER_ESI);
x86State->edi = IntRegisterValue(X86_REGISTER_EDI);
x86State->cs = IntRegisterValue(X86_REGISTER_CS);
x86State->ds = IntRegisterValue(X86_REGISTER_DS);
x86State->es = IntRegisterValue(X86_REGISTER_ES);
x86State->fs = IntRegisterValue(X86_REGISTER_FS);
x86State->gs = IntRegisterValue(X86_REGISTER_GS);
x86State->user_ss = IntRegisterValue(X86_REGISTER_SS);
x86State->vector = fInterruptVector;
for (int32 i = 0; i < 8; i++) {
*(long double*)(x86State->extended_registers.fp_registers[i].value)
= (long double)FloatRegisterValue(X86_REGISTER_ST0 + i);
if (IsRegisterSet(X86_REGISTER_MM0 + i)) {
memcpy(&x86State->extended_registers.mmx_registers[i],
&fMMXRegisters[i], sizeof(x86_fp_register));
}
if (IsRegisterSet(X86_REGISTER_XMM0 + i)) {
memcpy(&x86State->extended_registers.xmm_registers[i],
&fXMMRegisters[i], sizeof(x86_xmm_register));
} else {
memset(&x86State->extended_registers.xmm_registers[i],
0, sizeof(x86_xmm_register));
}
}
return B_OK;
}
target_addr_t
CpuStateX86::InstructionPointer() const
{
return IsRegisterSet(X86_REGISTER_EIP)
? IntRegisterValue(X86_REGISTER_EIP) : 0;
}
void
CpuStateX86::SetInstructionPointer(target_addr_t address)
{
SetIntRegister(X86_REGISTER_EIP, (uint32)address);
}
target_addr_t
CpuStateX86::StackFramePointer() const
{
return IsRegisterSet(X86_REGISTER_EBP)
? IntRegisterValue(X86_REGISTER_EBP) : 0;
}
target_addr_t
CpuStateX86::StackPointer() const
{
return IsRegisterSet(X86_REGISTER_ESP)
? IntRegisterValue(X86_REGISTER_ESP) : 0;
}
bool
CpuStateX86::GetRegisterValue(const Register* reg, BVariant& _value) const
{
int32 index = reg->Index();
if (!IsRegisterSet(index))
return false;
if (index >= X86_XMM_REGISTER_END)
return false;
if (BVariant::TypeIsInteger(reg->ValueType())) {
if (reg->BitSize() == 16)
_value.SetTo((uint16)fIntRegisters[index]);
else
_value.SetTo(fIntRegisters[index]);
} else if (BVariant::TypeIsFloat(reg->ValueType())) {
index -= X86_REGISTER_ST0;
if (reg->ValueType() == B_FLOAT_TYPE)
_value.SetTo((float)fFloatRegisters[index]);
else
_value.SetTo(fFloatRegisters[index]);
} else {
if (index >= X86_REGISTER_MM0 && index < X86_REGISTER_XMM0) {
index -= X86_REGISTER_MM0;
_value.SetTo(fMMXRegisters[index].value);
} else {
index -= X86_REGISTER_XMM0;
_value.SetTo(fXMMRegisters[index].value);
}
}
return true;
}
bool
CpuStateX86::SetRegisterValue(const Register* reg, const BVariant& value)
{
int32 index = reg->Index();
if (index >= X86_XMM_REGISTER_END)
return false;
if (index < X86_INT_REGISTER_END)
fIntRegisters[index] = value.ToUInt32();
else if (index >= X86_REGISTER_ST0 && index < X86_FP_REGISTER_END)
fFloatRegisters[index - X86_REGISTER_ST0] = value.ToDouble();
else if (index >= X86_REGISTER_MM0 && index < X86_MMX_REGISTER_END) {
if (value.Size() > sizeof(int64))
return false;
memset(&fMMXRegisters[index - X86_REGISTER_MM0], 0,
sizeof(x86_fp_register));
memcpy(fMMXRegisters[index - X86_REGISTER_MM0].value,
value.ToPointer(), value.Size());
} else if (index >= X86_REGISTER_XMM0 && index < X86_XMM_REGISTER_END) {
if (value.Size() > sizeof(x86_xmm_register))
return false;
memset(&fXMMRegisters[index - X86_REGISTER_XMM0], 0,
sizeof(x86_xmm_register));
memcpy(fXMMRegisters[index - X86_REGISTER_XMM0].value,
value.ToPointer(), value.Size());
} else
return false;
fSetRegisters[index] = 1;
return true;
}
bool
CpuStateX86::IsRegisterSet(int32 index) const
{
return index >= 0 && index < X86_REGISTER_COUNT && fSetRegisters[index];
}
uint32
CpuStateX86::IntRegisterValue(int32 index) const
{
if (!IsRegisterSet(index) || index >= X86_INT_REGISTER_END)
return 0;
return fIntRegisters[index];
}
void
CpuStateX86::SetIntRegister(int32 index, uint32 value)
{
if (index < 0 || index >= X86_INT_REGISTER_END)
return;
fIntRegisters[index] = value;
fSetRegisters[index] = 1;
}
double
CpuStateX86::FloatRegisterValue(int32 index) const
{
if (index < X86_REGISTER_ST0 || index >= X86_FP_REGISTER_END
|| !IsRegisterSet(index)) {
return 0.0;
}
return fFloatRegisters[index - X86_REGISTER_ST0];
}
void
CpuStateX86::SetFloatRegister(int32 index, double value)
{
if (index < X86_REGISTER_ST0 || index >= X86_FP_REGISTER_END)
return;
fFloatRegisters[index - X86_REGISTER_ST0] = value;
fSetRegisters[index] = 1;
}
const void*
CpuStateX86::MMXRegisterValue(int32 index) const
{
if (index < X86_REGISTER_MM0 || index >= X86_MMX_REGISTER_END
|| !IsRegisterSet(index)) {
return 0;
}
return fMMXRegisters[index - X86_REGISTER_MM0].value;
}
void
CpuStateX86::SetMMXRegister(int32 index, const uint8* value)
{
if (index < X86_REGISTER_MM0 || index >= X86_MMX_REGISTER_END)
return;
memcpy(fMMXRegisters[index - X86_REGISTER_MM0].value, value,
sizeof(uint64));
fSetRegisters[index] = 1;
}
const void*
CpuStateX86::XMMRegisterValue(int32 index) const
{
if (index < X86_REGISTER_XMM0 || index >= X86_XMM_REGISTER_END
|| !IsRegisterSet(index)) {
return NULL;
}
return fXMMRegisters[index - X86_REGISTER_XMM0].value;
}
void
CpuStateX86::SetXMMRegister(int32 index, const uint8* value)
{
if (index < X86_REGISTER_XMM0 || index >= X86_XMM_REGISTER_END)
return;
memcpy(fXMMRegisters[index - X86_REGISTER_XMM0].value, value,
sizeof(x86_xmm_register));
fSetRegisters[index] = 1;
}
void
CpuStateX86::UnsetRegister(int32 index)
{
if (index < 0 || index >= X86_REGISTER_COUNT)
return;
fSetRegisters[index] = 0;
}
