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Merge pull request #416 from Sonicadvance1/loadstore_roundingmode

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Support setting emulator host rounding mode with ldmxcsr/stmxcsr
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Stefanos Kornilios Mitsis Poiitidis authored and GitHub committed 2020-09-23 14:17:00 +03:00
2 parents e168e5053a a69b700afb
commit 6e4507ea2b
1 file changed
+9 -1
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External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
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@@ -7253,11 +7253,19 @@ void OpDispatchBuilder::UCOMISxOp(OpcodeArgs) {
}
void OpDispatchBuilder::LDMXCSR(OpcodeArgs) {
OrderedNode *Dest = LoadSource(GPRClass, Op, Op->Dest, Op->Flags, -1);
// We only support the rounding mode being set
OrderedNode *RoundingMode = _Bfe(4, 3, 13, Dest);
_SetRoundingMode(RoundingMode);
}
void OpDispatchBuilder::STMXCSR(OpcodeArgs) {
// Default MXCSR
StoreResult(GPRClass, Op, _Constant(0x1F80), -1);
OrderedNode *MXCSR = _Constant(32, 0x1F80);
OrderedNode *RoundingMode = _GetRoundingMode();
MXCSR = _Bfi(3, 13, MXCSR, RoundingMode);
StoreResult(GPRClass, Op, MXCSR, -1);
}
template<size_t ElementSize>