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Fix the ASM dispatcher to work with linux 64 

ESI is not available as callee save register on linux 64, so use R12, which
is available on windows 64, too. The only callee save register still available on
all platforms is EBP, but i guess we don't want to fiddle with that one.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6492 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
pierre 2010-11-28 16:29:58 +00:00
parent fa5f206797
commit f370650660
1 changed files with 29 additions and 6 deletions
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35
Source/Core/DSPCore/Src/DSPEmitter.cpp
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@ -189,7 +189,12 @@ void DSPEmitter::Compile(int start_addr)
// Increment PC - we shouldn't need to do this for every instruction. only for branches and end of block.
// Fallbacks to interpreter need this for fetching immediate values
#ifdef _M_IX86 // All32
ADD(16, M(&(g_dsp.pc)), Imm16(1));
#else
MOV(64, R(RAX), ImmPtr(&(g_dsp.pc)));
ADD(16, MDisp(RAX,0), Imm16(1));
#endif
EmitInstruction(inst);
@ -248,7 +253,8 @@ void DSPEmitter::Compile(int start_addr)
#ifdef _M_IX86 // All32
MOV(16, R(AX), M(&g_dsp.pc));
#else
MOVZX(32, 16, EAX, M(&g_dsp.pc));
MOV(64, R(RAX), ImmPtr(&(g_dsp.pc)));
MOV(16, R(AX), MDisp(RAX,0));
#endif
CMP(16, R(AX), Imm16(addr));
FixupBranch rNoBranch = J_CC(CC_Z);
@ -303,7 +309,7 @@ const u8 *DSPEmitter::CompileStub()
const u8 *entryPoint = AlignCode16();
ABI_PushAllCalleeSavedRegsAndAdjustStack();
// ABI_AlignStack(0);
CALL((void *)CompileCurrent);
ABI_CallFunction((void *)&CompileCurrent);
// ABI_RestoreStack(0);
ABI_PopAllCalleeSavedRegsAndAdjustStack();
//MOVZX(32, 16, ECX, M(&g_dsp.pc));
@ -320,29 +326,46 @@ void DSPEmitter::CompileDispatcher()
// Cache pointers into registers
#ifdef _M_IX86
MOV(32, R(ESI), M(&cyclesLeft));
MOV(32, R(EBX), Imm32((u32)blocks));
MOV(32, R(EBX), ImmPtr(blocks));
#else
MOV(32, R(ESI), M(&cyclesLeft));
MOV(64, R(RBX), Imm64((u64)blocks));
// Using R12 here since it is callee save register on both
// linux and windows 64.
MOV(64, R(R12), ImmPtr(&cyclesLeft));
MOV(32, R(R12), MDisp(R12,0));
MOV(64, R(RBX), ImmPtr(blocks));
#endif
const u8 *dispatcherLoop = GetCodePtr();
// Check for DSP halt
#ifdef _M_IX86
TEST(8, M(&g_dsp.cr), Imm8(CR_HALT));
#else
MOV(64, R(R11), ImmPtr(&g_dsp.cr));
TEST(8, MDisp(R11,0), Imm8(CR_HALT));
#endif
FixupBranch halt = J_CC(CC_NE);
#ifdef _M_IX86
MOVZX(32, 16, ECX, M(&g_dsp.pc));
#else
MOV(64, R(RCX), ImmPtr(&g_dsp.pc));
MOVZX(64, 16, RCX, MDisp(RCX,0));
#endif
// Execute block. Cycles executed returned in EAX.
#ifdef _M_IX86
CALLptr(MComplex(EBX, ECX, SCALE_4, 0));
#else
CALLptr(MComplex(RBX, ECX, SCALE_8, 0));
CALLptr(MComplex(RBX, RCX, SCALE_8, 0));
#endif
// Decrement cyclesLeft
#ifdef _M_IX86
SUB(32, R(ESI), R(EAX));
#else
SUB(32, R(R12), R(EAX));
#endif
J_CC(CC_A, dispatcherLoop);