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Fix stack misalignment fix.

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This commit is contained in:
comex
2013-09-22 15:48:27 -04:00
parent 9a6f28fce4
commit 6209067daa
8 changed files with 139 additions and 187 deletions
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20
Source/Core/Common/Src/x64Thunk.cpp
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@ -91,35 +91,27 @@ void *ThunkManager::ProtectFunction(void *function, int num_params)
PanicAlert("Trying to protect functions before the emu is started. Bad bad bad.");
const u8 *call_point = GetCodePtr();
// Make sure to align stack.
#ifdef _M_X64
#ifdef _WIN32
SUB(64, R(ESP), Imm8(0x28));
#else
SUB(64, R(ESP), Imm8(0x8));
#endif
// Make sure to align stack.
ABI_AlignStack(0, true);
CALL((void*)save_regs);
CALL((void*)function);
CALL((void*)load_regs);
#ifdef _WIN32
ADD(64, R(ESP), Imm8(0x28));
#else
ADD(64, R(ESP), Imm8(0x8));
#endif
ABI_RestoreStack(0, true);
RET();
#else
CALL((void*)save_regs);
// Since parameters are in the previous stack frame, not in registers, this takes some
// trickery : we simply re-push the parameters. might not be optimal, but that doesn't really
// matter.
ABI_AlignStack(num_params * 4);
ABI_AlignStack(num_params * 4, true);
unsigned int alignedSize = ABI_GetAlignedFrameSize(num_params * 4);
for (int i = 0; i < num_params; i++) {
// ESP is changing, so we do not need i
PUSH(32, MDisp(ESP, alignedSize - 4));
PUSH(32, MDisp(ESP, alignedSize));
}
CALL(function);
ABI_RestoreStack(num_params * 4);
ABI_RestoreStack(num_params * 4, true);
CALL((void*)load_regs);
RET();
#endif