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interp: Implement vsbz and vlgb.

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Not sure any games actually use them, but good to have the remaining vfpu
ops all implemented.
This commit is contained in:
Unknown W. Brackets 2019-02-23 15:04:54 -08:00
parent 520f850e09
commit aff1d8e8b2
2 changed files with 51 additions and 7 deletions
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57
Core/MIPS/MIPSIntVFPU.cpp
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@ -1820,11 +1820,33 @@ bad:
void Int_Vlgb(MIPSOpcode op)
{
// S & D valid
Reporting::ReportMessage("vlgb not implemented");
if (!PSP_CoreParameter().headLess) {
_dbg_assert_msg_(CPU,0,"vlgb not implemented");
// Vector log binary (extract exponent)
int vd = _VD;
int vs = _VS;
VectorSize sz = GetVecSize(op);
FloatBits d;
FloatBits s;
ReadVector(s.f, sz, vs);
// TODO: Test swizzle, t?
ApplySwizzleS(s.f, sz);
if (sz != V_Single) {
ERROR_LOG_REPORT(CPU, "vlgb not implemented for size %d", GetNumVectorElements(sz));
}
for (int i = 0; i < GetNumVectorElements(sz); ++i) {
int exp = (s.u[i] & 0x7F800000) >> 23;
if (exp == 0xFF) {
d.f[i] = s.f[i];
} else if (exp == 0) {
d.f[i] = -INFINITY;
} else {
d.f[i] = (float)(exp - 127);
}
}
ApplyPrefixD(d.f, sz);
WriteVector(d.f, sz, vd);
PC += 4;
EatPrefixes();
}
@ -1905,10 +1927,31 @@ bad:
void Int_Vsbz(MIPSOpcode op)
{
Reporting::ReportMessage("vsbz not implemented");
if (!PSP_CoreParameter().headLess) {
_dbg_assert_msg_(CPU,0,"vsbz not implemented");
// Vector scale by zero (set exp to 0 to extract mantissa)
int vd = _VD;
int vs = _VS;
VectorSize sz = GetVecSize(op);
FloatBits d;
FloatBits s;
ReadVector(s.f, sz, vs);
// TODO: Test swizzle, t?
ApplySwizzleS(s.f, sz);
if (sz != V_Single) {
ERROR_LOG_REPORT(CPU, "vsbz not implemented for size %d", GetNumVectorElements(sz));
}
for (int i = 0; i < GetNumVectorElements(sz); ++i) {
// NAN and denormals pass through.
if (my_isnan(s.f[i]) || (s.u[i] & 0x7F800000) == 0) {
d.u[i] = s.u[i];
} else {
d.u[i] = (127 << 23) | (s.u[i] & 0x007FFFFF);
}
}
ApplyPrefixD(d.f, sz);
WriteVector(d.f, sz, vd);
PC += 4;
EatPrefixes();
}

1
Core/MIPS/MIPSTables.cpp
View File

@ -524,6 +524,7 @@ const MIPSInstruction tableVFPU0[8] = // 011000 xxx ....... . ....... . .......
{
INSTR("vadd", JITFUNC(Comp_VecDo3), Dis_VectorSet3, Int_VecDo3, IN_OTHER|OUT_OTHER|IS_VFPU|OUT_EAT_PREFIX),
INSTR("vsub", JITFUNC(Comp_VecDo3), Dis_VectorSet3, Int_VecDo3, IN_OTHER|OUT_OTHER|IS_VFPU|OUT_EAT_PREFIX),
// TODO: Disasm is wrong.
INSTR("vsbn", JITFUNC(Comp_Generic), Dis_VectorSet3, Int_Vsbn, IN_OTHER|OUT_OTHER|IS_VFPU|OUT_EAT_PREFIX),
INVALID, INVALID, INVALID, INVALID,