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x86/R5900: EE rec doesn't need a stack frame

This commit is contained in:
Stenzek 2023-10-10 13:16:11 +10:00 committed by Connor McLaughlin
parent 606cbb3883
commit 8e2af39c06
1 changed files with 16 additions and 14 deletions
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30
pcsx2/x86/ix86-32/iR5900.cpp
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@ -365,7 +365,6 @@ static const void* DispatcherReg = nullptr;
static const void* JITCompile = nullptr;
static const void* JITCompileInBlock = nullptr;
static const void* EnterRecompiledCode = nullptr;
static const void* ExitRecompiledCode = nullptr;
static const void* DispatchBlockDiscard = nullptr;
static const void* DispatchPageReset = nullptr;
@ -443,23 +442,26 @@ static const void* _DynGen_EnterRecompiledCode()
u8* retval = xGetAlignedCallTarget();
{ // Properly scope the frame prologue/epilogue
#ifdef ENABLE_VTUNE
xScopedStackFrame frame(true, true);
xScopedStackFrame frame(true, true);
#else
xScopedStackFrame frame(false, true);
#ifdef _WIN32
// Shadow space for Win32
static constexpr u32 stack_size = 32 + 8;
#else
// Stack still needs to be aligned
static constexpr u32 stack_size = 8;
#endif
if (CHECK_FASTMEM)
xMOV(RFASTMEMBASE, ptrNative[&vtlb_private::vtlbdata.fastmem_base]);
// We never return through this function, instead we fastjmp() out.
// So we don't need to worry about preserving callee-saved registers, but we do need to align the stack.
xSUB(rsp, stack_size);
#endif
xJMP((void*)DispatcherReg);
if (CHECK_FASTMEM)
xMOV(RFASTMEMBASE, ptrNative[&vtlb_private::vtlbdata.fastmem_base]);
// Save an exit point
ExitRecompiledCode = xGetPtr();
}
xRET();
xJMP(DispatcherReg);
return retval;
}
@ -468,7 +470,7 @@ static const void* _DynGen_DispatchBlockDiscard()
{
u8* retval = xGetPtr();
xFastCall((const void*)dyna_block_discard);
xJMP((const void*)ExitRecompiledCode);
xJMP(DispatcherReg);
return retval;
}
@ -476,7 +478,7 @@ static const void* _DynGen_DispatchPageReset()
{
u8* retval = xGetPtr();
xFastCall((const void*)dyna_page_reset);
xJMP((const void*)ExitRecompiledCode);
xJMP(DispatcherReg);
return retval;
}