void Jit::Comp_mxc1(MIPSOpcode op) {
CONDITIONAL_DISABLE(FPU_XFER);
int fs = _FS;
MIPSGPReg rt = _RT;
switch ((op >> 21) & 0x1f) {
case 0: // R(rt) = FI(fs); break; //mfc1
if (rt == MIPS_REG_ZERO)
return;
gpr.MapReg(rt, false, true);
// If fs is not mapped, most likely it's being abandoned.
// Just load from memory in that case.
if (fpr.R(fs).IsSimpleReg()) {
MOVD_xmm(gpr.R(rt), fpr.RX(fs));
} else {
MOV(32, gpr.R(rt), fpr.R(fs));
}
break;
case 2: // R(rt) = currentMIPS->ReadFCR(fs); break; //cfc1
if (rt == MIPS_REG_ZERO)
return;
if (fs == 31) {
bool wasImm = gpr.IsImm(MIPS_REG_FPCOND);
if (!wasImm) {
gpr.Lock(rt, MIPS_REG_FPCOND);
gpr.MapReg(MIPS_REG_FPCOND, true, false);
}
gpr.MapReg(rt, false, true);
MOV(32, gpr.R(rt), MIPSSTATE_VAR(fcr31));
if (wasImm) {
if (gpr.GetImm(MIPS_REG_FPCOND) & 1) {
OR(32, gpr.R(rt), Imm32(1 << 23));
} else {
AND(32, gpr.R(rt), Imm32(~(1 << 23)));
}
} else {
AND(32, gpr.R(rt), Imm32(~(1 << 23)));
MOV(32, R(TEMPREG), gpr.R(MIPS_REG_FPCOND));
AND(32, R(TEMPREG), Imm32(1));
SHL(32, R(TEMPREG), Imm8(23));
OR(32, gpr.R(rt), R(TEMPREG));
}
gpr.UnlockAll();
} else if (fs == 0) {
gpr.SetImm(rt, MIPSState::FCR0_VALUE);
} else {
Comp_Generic(op);
}
return;
case 4: //FI(fs) = R(rt); break; //mtc1
fpr.MapReg(fs, false, true);
if (gpr.IsImm(rt) && gpr.GetImm(rt) == 0) {
XORPS(fpr.RX(fs), fpr.R(fs));
} else {
gpr.KillImmediate(rt, true, false);
MOVD_xmm(fpr.RX(fs), gpr.R(rt));
}
return;
case 6: //currentMIPS->WriteFCR(fs, R(rt)); break; //ctc1
if (fs == 31) {
// Must clear before setting, since ApplyRoundingMode() assumes it was cleared.
RestoreRoundingMode();
if (gpr.IsImm(rt)) {
gpr.SetImm(MIPS_REG_FPCOND, (gpr.GetImm(rt) >> 23) & 1);
MOV(32, MIPSSTATE_VAR(fcr31), Imm32(gpr.GetImm(rt) & 0x0181FFFF));
if ((gpr.GetImm(rt) & 0x1000003) == 0) {
// Default nearest / no-flush mode, just leave it cleared.
} else {
UpdateRoundingMode(gpr.GetImm(rt));
ApplyRoundingMode();
}
} else {
void Jit::Comp_FPU2op(MIPSOpcode op) {
CONDITIONAL_DISABLE;
int fs = _FS;
int fd = _FD;
switch (op & 0x3f)
{
case 5: //F(fd) = fabsf(F(fs)); break; //abs
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
MOVSS(fpr.RX(fd), fpr.R(fs));
PAND(fpr.RX(fd), M(ssNoSignMask));
break;
case 6: //F(fd) = F(fs); break; //mov
if (fd != fs) {
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
MOVSS(fpr.RX(fd), fpr.R(fs));
}
break;
case 7: //F(fd) = -F(fs); break; //neg
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
MOVSS(fpr.RX(fd), fpr.R(fs));
PXOR(fpr.RX(fd), M(ssSignBits2));
break;
case 4: //F(fd) = sqrtf(F(fs)); break; //sqrt
fpr.SpillLock(fd, fs); // this probably works, just badly tested
fpr.MapReg(fd, fd == fs, true);
SQRTSS(fpr.RX(fd), fpr.R(fs));
break;
case 13: //FsI(fd) = F(fs)>=0 ? (int)floorf(F(fs)) : (int)ceilf(F(fs)); break;//trunc.w.s
{
fpr.SpillLock(fs, fd);
fpr.StoreFromRegister(fd);
CVTTSS2SI(EAX, fpr.R(fs));
// Did we get an indefinite integer value?
CMP(32, R(EAX), Imm32(0x80000000));
FixupBranch skip = J_CC(CC_NE);
MOVSS(XMM0, fpr.R(fs));
XORPS(XMM1, R(XMM1));
CMPSS(XMM0, R(XMM1), CMP_LT);
// At this point, -inf = 0xffffffff, inf/nan = 0x00000000.
// We want -inf to be 0x80000000 inf/nan to be 0x7fffffff, so we flip those bits.
MOVD_xmm(R(EAX), XMM0);
XOR(32, R(EAX), Imm32(0x7fffffff));
SetJumpTarget(skip);
MOV(32, fpr.R(fd), R(EAX));
}
break;
case 32: //F(fd) = (float)FsI(fs); break; //cvt.s.w
// Store to memory so we can read it as an integer value.
fpr.StoreFromRegister(fs);
CVTSI2SS(XMM0, fpr.R(fs));
MOVSS(fpr.R(fd), XMM0);
break;
case 12: //FsI(fd) = (int)floorf(F(fs)+0.5f); break; //round.w.s
case 14: //FsI(fd) = (int)ceilf (F(fs)); break; //ceil.w.s
case 15: //FsI(fd) = (int)floorf(F(fs)); break; //floor.w.s
case 36: //FsI(fd) = (int) F(fs); break; //cvt.w.s
default:
DISABLE;
return;
}
fpr.ReleaseSpillLocks();
}
void Jit::Comp_FPU2op(MIPSOpcode op) {
CONDITIONAL_DISABLE(FPU);
int fs = _FS;
int fd = _FD;
auto execRounding = [&](void (XEmitter::*conv)(X64Reg, OpArg), int setMXCSR) {
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fs == fd, true);
// Small optimization: 0 is our default mode anyway.
if (setMXCSR == 0 && !js.hasSetRounding) {
setMXCSR = -1;
}
if (setMXCSR != -1) {
STMXCSR(MIPSSTATE_VAR(mxcsrTemp));
MOV(32, R(TEMPREG), MIPSSTATE_VAR(mxcsrTemp));
AND(32, R(TEMPREG), Imm32(~(3 << 13)));
OR(32, R(TEMPREG), Imm32(setMXCSR << 13));
MOV(32, MIPSSTATE_VAR(temp), R(TEMPREG));
LDMXCSR(MIPSSTATE_VAR(temp));
}
(this->*conv)(TEMPREG, fpr.R(fs));
// Did we get an indefinite integer value?
CMP(32, R(TEMPREG), Imm32(0x80000000));
FixupBranch skip = J_CC(CC_NE);
if (fd != fs) {
CopyFPReg(fpr.RX(fd), fpr.R(fs));
}
XORPS(XMM1, R(XMM1));
CMPSS(fpr.RX(fd), R(XMM1), CMP_LT);
// At this point, -inf = 0xffffffff, inf/nan = 0x00000000.
// We want -inf to be 0x80000000 inf/nan to be 0x7fffffff, so we flip those bits.
MOVD_xmm(R(TEMPREG), fpr.RX(fd));
XOR(32, R(TEMPREG), Imm32(0x7fffffff));
SetJumpTarget(skip);
MOVD_xmm(fpr.RX(fd), R(TEMPREG));
if (setMXCSR != -1) {
LDMXCSR(MIPSSTATE_VAR(mxcsrTemp));
}
};
switch (op & 0x3f) {
case 5: //F(fd) = fabsf(F(fs)); break; //abs
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
MOV(PTRBITS, R(TEMPREG), ImmPtr(&ssNoSignMask[0]));
if (fd != fs && fpr.IsMapped(fs)) {
MOVAPS(fpr.RX(fd), MatR(TEMPREG));
ANDPS(fpr.RX(fd), fpr.R(fs));
} else {
if (fd != fs) {
MOVSS(fpr.RX(fd), fpr.R(fs));
}
ANDPS(fpr.RX(fd), MatR(TEMPREG));
}
break;
case 6: //F(fd) = F(fs); break; //mov
if (fd != fs) {
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
CopyFPReg(fpr.RX(fd), fpr.R(fs));
}
break;
case 7: //F(fd) = -F(fs); break; //neg
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
MOV(PTRBITS, R(TEMPREG), ImmPtr(&ssSignBits2[0]));
if (fd != fs && fpr.IsMapped(fs)) {
MOVAPS(fpr.RX(fd), MatR(TEMPREG));
XORPS(fpr.RX(fd), fpr.R(fs));
} else {
if (fd != fs) {
MOVSS(fpr.RX(fd), fpr.R(fs));
}
XORPS(fpr.RX(fd), MatR(TEMPREG));
}
break;
case 4: //F(fd) = sqrtf(F(fs)); break; //sqrt
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fd == fs, true);
SQRTSS(fpr.RX(fd), fpr.R(fs));
break;
case 13: //FsI(fd) = F(fs)>=0 ? (int)floorf(F(fs)) : (int)ceilf(F(fs)); break; //trunc.w.s
execRounding(&XEmitter::CVTTSS2SI, -1);
break;
case 32: //F(fd) = (float)FsI(fs); break; //cvt.s.w
fpr.SpillLock(fd, fs);
fpr.MapReg(fd, fs == fd, true);
if (fpr.IsMapped(fs)) {
CVTDQ2PS(fpr.RX(fd), fpr.R(fs));
} else {
// If fs was fd, we'd be in the case above since we mapped fd.
MOVSS(fpr.RX(fd), fpr.R(fs));
CVTDQ2PS(fpr.RX(fd), fpr.R(fd));
}
break;
case 36: //FsI(fd) = (int) F(fs); break; //cvt.w.s
// Uses the current rounding mode.
execRounding(&XEmitter::CVTSS2SI, -1);
break;
case 12: //FsI(fd) = (int)floorf(F(fs)+0.5f); break; //round.w.s
execRounding(&XEmitter::CVTSS2SI, 0);
break;
case 14: //FsI(fd) = (int)ceilf (F(fs)); break; //ceil.w.s
execRounding(&XEmitter::CVTSS2SI, 2);
break;
case 15: //FsI(fd) = (int)floorf(F(fs)); break; //floor.w.s
execRounding(&XEmitter::CVTSS2SI, 1);
break;
default:
DISABLE;
return;
}
fpr.ReleaseSpillLocks();
}
