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few more updates to the div opcode... 

git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@30 a6443dda-0b58-4228-96e9-037be469359c
This commit is contained in:
cottonvibes 2008-08-14 18:10:56 +00:00 committed by Gregory Hainaut
parent c3a6c3316d
commit bb6fc0b3d0
1 changed files with 12 additions and 8 deletions
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20
pcsx2/x86/iVUmicro.c
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@ -3806,14 +3806,14 @@ void recVUMI_DIV(VURegs *VU, int info)
}
}
else
{
{ // needs work, ft can also be zero!
if (CHECK_EXTRA_OVERFLOW)
vuFloat2(EEREC_T, EEREC_TEMP, 0x8);
SSE_MOVSS_M32_to_XMM(EEREC_TEMP, (uptr)&VU->VF[0].UL[3]); // TEMP.x <- 1
SSE_DIVSS_XMM_to_XMM(EEREC_TEMP, EEREC_T);
}
}
else {
else { // needs work, ft can also be zero!
if (CHECK_EXTRA_OVERFLOW)
vuFloat3( (uptr)&VU->VF[_Ft_].UL[_Ftf_] );
SSE_MOVSS_M32_to_XMM(EEREC_TEMP, (uptr)&VU->VF[0].UL[3]); // TEMP.x <- 1
@ -3821,7 +3821,7 @@ void recVUMI_DIV(VURegs *VU, int info)
}
}
else { // = 0 So result is +/- 0, or +/- Fmax if (FT == 0)
//SysPrintf("FS = 0, FT != 0\n");
SysPrintf("FS = 0, FT != 0\n");
_unpackVFSS_xyzw(EEREC_TEMP, EEREC_T, _Ftf_); // EEREC_TEMP.x <- EEREC_T.ftf
@ -3866,16 +3866,20 @@ void recVUMI_DIV(VURegs *VU, int info)
}
else { // _Fs_ != 0
if( _Ft_ == 0 ) {
if( _Ftf_ < 3 ) {
//SysPrintf("FS != 0, FT == 0\n");
if( _Ftf_ < 3 ) { // needs extra work, fs can also be zero!
SysPrintf("FS != 0, FT == n/0");
OR32ItoM(VU_VI_ADDR(REG_STATUS_FLAG, 2), 0x820); //Zero divide (only when not 0/0)
AND32ItoM(VU_VI_ADDR(REG_Q, 0), 0x80000000);
OR32ItoM(VU_VI_ADDR(REG_Q, 0), 0x7f7fffff);
_unpackVFSS_xyzw(EEREC_TEMP, EEREC_S, _Fsf_); // EEREC_TEMP.x <- EEREC_S.fsf
SSE_ANDPS_M128_to_XMM(EEREC_TEMP, (uptr)&VU_Signed_Zero_Mask[0]);
SSE_ORPS_M128_to_XMM(EEREC_TEMP, (uptr)&g_maxvals[0]);
SSE_MOVSS_XMM_to_M32(VU_VI_ADDR(REG_Q, 0), EEREC_TEMP);
} else {
//SysPrintf("FS != 0, FT == 1\n");
SysPrintf("FS != 0, FT == n/1");
if( _Fsf_ == 0 ) SSE_MOVAPS_XMM_to_XMM(EEREC_TEMP, EEREC_S);
else _unpackVF_xyzw(EEREC_TEMP, EEREC_S, _Fsf_);
if (CHECK_EXTRA_OVERFLOW)
vuFloat2(EEREC_TEMP, EEREC_TEMP, 0x8);
SSE_MOVSS_XMM_to_M32(VU_VI_ADDR(REG_Q, 0), EEREC_TEMP);
}