void EmuCodeBlock::UnsafeLoadToEAX(const Gen::OpArg & opAddress, int accessSize, s32 offset, bool signExtend)
{
#ifdef _M_X64
if (opAddress.IsSimpleReg())
{
MOVZX(32, accessSize, EAX, MComplex(RBX, opAddress.GetSimpleReg(), SCALE_1, offset));
}
else
{
MOV(32, R(EAX), opAddress);
MOVZX(32, accessSize, EAX, MComplex(RBX, EAX, SCALE_1, offset));
}
#else
if (opAddress.IsImm())
{
MOVZX(32, accessSize, EAX, M(Memory::base + (((u32)opAddress.offset + offset) & Memory::MEMVIEW32_MASK)));
}
else
{
if (!opAddress.IsSimpleReg(EAX))
MOV(32, R(EAX), opAddress);
AND(32, R(EAX), Imm32(Memory::MEMVIEW32_MASK));
MOVZX(32, accessSize, EAX, MDisp(EAX, (u32)Memory::base + offset));
}
#endif
// Add a 2 bytes NOP to have some space for the backpatching
if (accessSize == 8)
NOP(2);
if (accessSize == 32)
{
BSWAP(32, EAX);
}
else if (accessSize == 16)
{
BSWAP(32, EAX);
if (signExtend)
SAR(32, R(EAX), Imm8(16));
else
SHR(32, R(EAX), Imm8(16));
}
else if (signExtend)
{
// TODO: bake 8-bit into the original load.
MOVSX(32, accessSize, EAX, R(EAX));
}
}
void Jit64::ComputeRC(const Gen::OpArg & arg) {
if( arg.IsImm() )
{
s32 value = (s32)arg.offset;
if( value < 0 )
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x8));
else if( value > 0 )
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x4));
else
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x2));
}
else
{
if (arg.IsSimpleReg())
TEST(32, arg, arg);
else
CMP(32, arg, Imm8(0));
FixupBranch pLesser = J_CC(CC_L);
FixupBranch pGreater = J_CC(CC_G);
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x2)); // _x86Reg == 0
FixupBranch continue1 = J();
SetJumpTarget(pGreater);
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x4)); // _x86Reg > 0
FixupBranch continue2 = J();
SetJumpTarget(pLesser);
MOV(8, M(&PowerPC::ppcState.cr_fast[0]), Imm8(0x8)); // _x86Reg < 0
SetJumpTarget(continue1);
SetJumpTarget(continue2);
}
}
void XEmitter::ABI_CallFunctionAC(int bits, const void *func, const Gen::OpArg &arg1, u32 param2)
{
if (!arg1.IsSimpleReg(ABI_PARAM1))
MOV(bits, R(ABI_PARAM1), arg1);
MOV(32, R(ABI_PARAM2), Imm32(param2));
ABI_CallFunction(func);
}
void XEmitter::ABI_CallFunctionAA(void *func, const Gen::OpArg &arg1, const Gen::OpArg &arg2)
{
if (!arg1.IsSimpleReg(ABI_PARAM1))
MOV(32, R(ABI_PARAM1), arg1);
if (!arg2.IsSimpleReg(ABI_PARAM2))
MOV(32, R(ABI_PARAM2), arg2);
u64 distance = u64(func) - (u64(code) + 5);
if (distance >= 0x0000000080000000ULL
&& distance < 0xFFFFFFFF80000000ULL) {
// Far call
MOV(64, R(RAX), Imm64((u64)func));
CALLptr(R(RAX));
} else {
CALL(func);
}
}
void XEmitter::ABI_CallFunctionPAA(const void *func, void *param1, const Gen::OpArg &arg2, const Gen::OpArg &arg3) {
MOV(64, R(ABI_PARAM1), ImmPtr(param1));
if (!arg2.IsSimpleReg(ABI_PARAM2))
MOV(32, R(ABI_PARAM2), arg2);
if (!arg3.IsSimpleReg(ABI_PARAM3))
MOV(32, R(ABI_PARAM3), arg3);
u64 distance = u64(func) - (u64(code) + 5);
if (distance >= 0x0000000080000000ULL
&& distance < 0xFFFFFFFF80000000ULL) {
// Far call
MOV(64, R(RAX), ImmPtr(func));
CALLptr(R(RAX));
} else {
CALL(func);
}
}
void XEmitter::ABI_CallFunctionAC(void *func, const Gen::OpArg &arg1, u32 param2)
{
ABI_AlignStack(0);
if (!arg1.IsSimpleReg(ABI_PARAM1))
MOV(32, R(ABI_PARAM1), arg1);
MOV(32, R(ABI_PARAM2), Imm32(param2));
u64 distance = u64(func) - (u64(code) + 5);
if (distance >= 0x0000000080000000ULL
&& distance < 0xFFFFFFFF80000000ULL) {
// Far call
MOV(64, R(RAX), Imm64((u64)func));
CALLptr(R(RAX));
} else {
CALL(func);
}
ABI_RestoreStack(0);
}
void XEmitter::ABI_CallFunctionA(int bits, const void *func, const Gen::OpArg &arg1)
{
if (!arg1.IsSimpleReg(ABI_PARAM1))
MOV(bits, R(ABI_PARAM1), arg1);
ABI_CallFunction(func);
}