steam-frame/FEX-Emu--FEX
1
0 Fork 0
mirror of https://github.com/FEX-Emu/FEX.git synced 2026-10-23 09:00:39 +02:00
Code Issues Packages Projects Releases 67 Wiki Activity

Support setting emulator host rounding mode with ldmxcsr/stmxcsr

Browse Source
This commit is contained in:
Ryan Houdek committed 2020-09-23 00:21:52 -07:00
1 parent e168e5053a
commit a69b700afb
1 file changed
+9 -1
Download Patch File Download Diff File Expand all files Collapse all files
External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
Vendored
+9 -1
View File
@@ -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>