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microVU: Made the flaghack safer by accounting for some problematic case. 

It fixes the few games I have that were having problems with the flaghack (but the speedup the flaghack offered in those games has been lessened).
The speedup on games that weren't having problems before should be around the same as before; (in other words: games that were compatible with the hack should still be as fast as before, and games that had problems with the hack will probably be fixed but the speedhack won't do as-much)

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1694 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
cottonvibes 2009-08-28 04:27:14 +00:00
parent 4c39dd35a7
commit 9adf6858c1
2 changed files with 3 additions and 2 deletions
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4
pcsx2/x86/microVU_Flags.inl
View File

@ -74,7 +74,8 @@ int sortFlag(int* fFlag, int* bFlag, int cycles) {
return x; // Returns the number of Valid Flag Instances
}
#define sFlagCond ((sFLAG.doFlag && !mVUsFlagHack) || mVUlow.isFSSET || mVUinfo.doDivFlag)
#define sFlagCond (sFLAG.doFlag || mVUlow.isFSSET || mVUinfo.doDivFlag)
#define sHackCond (mVUsFlagHack && !sFLAG.doNonSticky)
// Note: Flag handling is 'very' complex, it requires full knowledge of how microVU recs work, so don't touch!
microVUt(void) mVUsetFlags(mV, microFlagCycles& mFC) {
@ -143,6 +144,7 @@ microVUt(void) mVUsetFlags(mV, microFlagCycles& mFC) {
mFLAG.lastWrite = (xM-1) & 3;
cFLAG.lastWrite = (xC-1) & 3;
if (sHackCond) { sFLAG.doFlag = 0; }
if (sFlagCond) { mFC.xStatus[xS] = mFC.cycles + 4; xS = (xS+1) & 3; }
if (mFLAG.doFlag) { mFC.xMac [xM] = mFC.cycles + 4; xM = (xM+1) & 3; }
if (cFLAG.doFlag) { mFC.xClip [xC] = mFC.cycles + 4; xC = (xC+1) & 3; }

1
pcsx2/x86/microVU_Upper.inl
View File

@ -32,7 +32,6 @@ microVUt(void) mVUupdateFlags(mV, int reg, int regT1 = -1, int regT2 = -1, bool
static const u16 flipMask[16] = {0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15};
//SysPrintf("Status = %d; Mac = %d\n", sFLAG.doFlag, mFLAG.doFlag);
if (mVUsFlagHack) { sFLAG.doFlag = 0; }
if (!sFLAG.doFlag && !mFLAG.doFlag) { return; }
if ((mFLAG.doFlag && !(_XYZW_SS && modXYZW))) {
if (regT2 < 0) { regT2 = mVU->regAlloc->allocReg(); regT2b = 1; }