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Save only the registers that need to be saved rather than going through ProtectFunction.

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This commit is contained in:
comex
2013-09-25 00:29:00 -04:00
parent 2a339c926e
commit ebe4448749
14 changed files with 193 additions and 58 deletions
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68
Source/Core/Common/Src/x64Emitter.cpp
View File

@ -1634,6 +1634,74 @@ void XEmitter::___CallCdeclImport6(void* impptr, u32 arg0, u32 arg1, u32 arg2, u
CALLptr(M(impptr));
}
void XEmitter::PushRegistersAndAlignStack(u32 mask)
{
int shadow = 0;
#ifdef _WIN32
shadow = 0x20;
#endif
int count = 0;
for (int r = 0; r < 16; r++)
{
if (mask & (1 << r))
{
PUSH((X64Reg) r);
count++;
}
}
int size = (count & 1) ? 0 : 8;
for (int x = 0; x < 16; x++)
{
if (mask & (1 << (16 + x)))
size += 16;
}
size += shadow;
if (size)
SUB(64, R(RSP), size >= 0x100 ? Imm32(size) : Imm8(size));
int offset = shadow;
for (int x = 0; x < 16; x++)
{
if (mask & (1 << (16 + x)))
{
MOVAPD(MDisp(RSP, offset), (X64Reg) x);
offset += 16;
}
}
}
void XEmitter::PopRegistersAndAlignStack(u32 mask)
{
int size = 0;
#ifdef _WIN32
size += 0x20;
#endif
for (int x = 0; x < 16; x++)
{
if (mask & (1 << (16 + x)))
{
MOVAPD((X64Reg) x, MDisp(RSP, size));
size += 16;
}
}
int count = 0;
for (int r = 0; r < 16; r++)
{
if (mask & (1 << r))
count++;
}
size += (count & 1) ? 0 : 8;
if (size)
ADD(64, R(RSP), size >= 0x100 ? Imm32(size) : Imm8(size));
for (int r = 15; r >= 0; r--)
{
if (mask & (1 << r))
{
POP((X64Reg) r);
}
}
}
#endif
}

3
Source/Core/Common/Src/x64Emitter.h
View File

@ -691,6 +691,9 @@ public:
#define DECLARE_IMPORT(x) extern "C" void *__imp_##x
void PushRegistersAndAlignStack(u32 mask);
void PopRegistersAndAlignStack(u32 mask);
#endif
}; // class XEmitter