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minor VU recUpdateFlags() changes based on what Jake mentioned in r560 

git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@564 a6443dda-0b58-4228-96e9-037be469359c
This commit is contained in:
cottonvibes 2009-01-09 00:07:39 +00:00 committed by Gregory Hainaut
parent a20ceb0bcb
commit fc924ba6e0
1 changed files with 10 additions and 10 deletions
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20
pcsx2/x86/iVUmicroUpper.cpp
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@ -181,8 +181,8 @@ void recUpdateFlags(VURegs * VU, int reg, int info)
}
SSE_SHUFPS_XMM_to_XMM(reg, reg, 0x1B); // Flip wzyx to xyzw
XOR16RtoR(x86macflag, x86macflag); // Clear Mac Flag
MOV16MtoR(x86temp, prevstataddr); // Load the previous status in to x86temp
XOR32RtoR(x86macflag, x86macflag); // Clear Mac Flag
MOV32MtoR(x86temp, prevstataddr); // Load the previous status in to x86temp
AND16ItoR(x86temp, 0xff0); // Keep Sticky and D/I flags
@ -203,11 +203,11 @@ void recUpdateFlags(VURegs * VU, int reg, int info)
SSE_MOVMSKPS_XMM_to_R32(EAX, t1reg); // Move the sign bits of the previous calculation
AND32ItoR(EAX, _X_Y_Z_W ); // Grab "Has Overflowed" bits from the previous calculation (also make sure we're only grabbing from the XYZW being modified)
AND16ItoR(EAX, _X_Y_Z_W ); // Grab "Has Overflowed" bits from the previous calculation (also make sure we're only grabbing from the XYZW being modified)
pjmp = JZ8(0); // Skip if none are
OR16ItoR(x86temp, 0x208); // OS, O flags
SHL16ItoR(EAX, 12);
OR16RtoR(x86macflag, EAX);
OR32RtoR(x86macflag, EAX);
pjmp32 = JMP32(0); // Skip Underflow Check
x86SetJ8(pjmp);
@ -224,11 +224,11 @@ void recUpdateFlags(VURegs * VU, int reg, int info)
SSE_MOVMSKPS_XMM_to_R32(EAX, t1reg); // Move the sign bits of the previous calculation
AND32ItoR(EAX, _X_Y_Z_W ); // Grab "Has Underflowed" bits from the previous calculation
AND16ItoR(EAX, _X_Y_Z_W ); // Grab "Has Underflowed" bits from the previous calculation
pjmp = JZ8(0); // Skip if none are
OR16ItoR(x86temp, 0x104); // US, U flags
SHL16ItoR(EAX, 8);
OR16RtoR(x86macflag, EAX);
OR32RtoR(x86macflag, EAX);
x86SetJ8(pjmp);
//-------------------------Optional Code: Denormals Are Zero------------------------------
@ -254,11 +254,11 @@ void recUpdateFlags(VURegs * VU, int reg, int info)
SSE_MOVMSKPS_XMM_to_R32(EAX, t1reg); // Move the sign bits of the t1reg
AND32ItoR(EAX, _X_Y_Z_W ); // Grab "Is Signed" bits from the previous calculation
AND16ItoR(EAX, _X_Y_Z_W ); // Grab "Is Signed" bits from the previous calculation
pjmp = JZ8(0); // Skip if none are
OR16ItoR(x86temp, 0x82); // SS, S flags
SHL16ItoR(EAX, 4);
OR16RtoR(x86macflag, EAX);
OR32RtoR(x86macflag, EAX);
pjmp2 = JMP8(0); // If negative and not Zero, we can skip the Zero Flag checking
x86SetJ8(pjmp);
@ -269,10 +269,10 @@ void recUpdateFlags(VURegs * VU, int reg, int info)
SSE_MOVMSKPS_XMM_to_R32(EAX, t1reg); // Move the sign bits of the previous calculation
AND32ItoR(EAX, _X_Y_Z_W ); // Grab "Is Zero" bits from the previous calculation
AND16ItoR(EAX, _X_Y_Z_W ); // Grab "Is Zero" bits from the previous calculation
pjmp = JZ8(0); // Skip if none are
OR16ItoR(x86temp, 0x41); // ZS, Z flags
OR16RtoR(x86macflag, EAX);
OR32RtoR(x86macflag, EAX);
x86SetJ8(pjmp);
//-------------------------Finally: Send the Flags to the Mac Flag Address------------------------------