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Interpreter: Simplify mcrfs implementation

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This commit is contained in:
JosJuice 2021-08-18 13:39:06 +02:00
parent 33154de614
commit 4f09c320e8
1 changed files with 6 additions and 28 deletions
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34
Source/Core/Core/PowerPC/Interpreter/Interpreter_SystemRegisters.cpp
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@ -549,34 +549,12 @@ void Interpreter::isync(UGeckoInstruction inst)
void Interpreter::mcrfs(UGeckoInstruction inst)
{
UpdateFPSCR(&FPSCR);
u32 fpflags = ((FPSCR.Hex >> (4 * (7 - inst.CRFS))) & 0xF);
switch (inst.CRFS)
{
case 0:
FPSCR.FX = 0;
FPSCR.OX = 0;
break;
case 1:
FPSCR.UX = 0;
FPSCR.ZX = 0;
FPSCR.XX = 0;
FPSCR.VXSNAN = 0;
break;
case 2:
FPSCR.VXISI = 0;
FPSCR.VXIDI = 0;
FPSCR.VXZDZ = 0;
FPSCR.VXIMZ = 0;
break;
case 3:
FPSCR.VXVC = 0;
break;
case 5:
FPSCR.VXSOFT = 0;
FPSCR.VXSQRT = 0;
FPSCR.VXCVI = 0;
break;
}
const u32 shift = 4 * (7 - inst.CRFS);
const u32 fpflags = (FPSCR.Hex >> shift) & 0xF;
// If any exception bits were read, clear them
FPSCR.Hex &= ~((0xF << shift) & (FPSCR_FX | FPSCR_ANY_X));
PowerPC::ppcState.cr.SetField(inst.CRFD, fpflags);
}