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fixed and reenabled and slightly optimized the JIT version of fcmpo/fcmpu.

This commit is contained in:
nitsuja 2012-01-07 22:19:45 -08:00
parent 2368d88c65
commit 1603bbb5f4
2 changed files with 43 additions and 22 deletions
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2
Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
View File

@ -193,7 +193,7 @@ void Jit64::Init()
jo.enableFastMem = false;
#endif
jo.assumeFPLoadFromMem = Core::g_CoreStartupParameter.bUseFastMem;
jo.fpAccurateFcmp = true; // Fallback to Interpreter
jo.fpAccurateFcmp = Core::g_CoreStartupParameter.bEnableFPRF;
jo.optimizeGatherPipe = true;
jo.fastInterrupts = false;
jo.accurateSinglePrecision = true;

63
Source/Core/Core/Src/PowerPC/Jit64/Jit_FloatingPoint.cpp
View File

@ -229,8 +229,6 @@ void Jit64::fmrx(UGeckoInstruction inst)
void Jit64::fcmpx(UGeckoInstruction inst)
{
// TODO : This still causes crashes in Nights, and broken graphics
// in Paper Mario, Super Paper Mario as well as SoulCalibur 2 prolly others too.. :(
INSTRUCTION_START
JITDISABLE(FloatingPoint)
if (jo.fpAccurateFcmp) {
@ -243,36 +241,59 @@ void Jit64::fcmpx(UGeckoInstruction inst)
int crf = inst.CRFD;
fpr.Lock(a,b);
if (a != b) fpr.BindToRegister(a, true);
fpr.BindToRegister(b, true);
// Are we masking sNaN invalid floating point exceptions? If not this could crash if we don't handle the exception?
UCOMISD(fpr.R(a).GetSimpleReg(), fpr.R(b));
UCOMISD(fpr.R(b).GetSimpleReg(), fpr.R(a));
FixupBranch pNaN = J_CC(CC_P);
FixupBranch pLesser = J_CC(CC_B);
FixupBranch pGreater = J_CC(CC_A);
FixupBranch pNaN, pLesser, pGreater;
FixupBranch continue1, continue2, continue3;
if (a != b)
{
// if B > A, goto Lesser's jump target
pLesser = J_CC(CC_A);
}
// if (B != B) or (A != A), goto NaN's jump target
pNaN = J_CC(CC_P);
if (a != b)
{
// if B < A, goto Greater's jump target
// JB can't precede the NaN check because it doesn't test ZF
pGreater = J_CC(CC_B);
}
// Equal
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x2));
FixupBranch continue1 = J();
// Greater Than
SetJumpTarget(pGreater);
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x4));
FixupBranch continue2 = J();
// Less Than
SetJumpTarget(pLesser);
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x8));
FixupBranch continue3 = J();
continue1 = J();
// NAN
SetJumpTarget(pNaN);
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x1));
if (a != b)
{
continue2 = J();
// Greater Than
SetJumpTarget(pGreater);
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x4));
continue3 = J();
// Less Than
SetJumpTarget(pLesser);
MOV(8, M(&PowerPC::ppcState.cr_fast[crf]), Imm8(0x8));
}
SetJumpTarget(continue1);
SetJumpTarget(continue2);
SetJumpTarget(continue3);
if (a != b)
{
SetJumpTarget(continue2);
SetJumpTarget(continue3);
}
fpr.UnlockAll();
}