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JitArm64: Fix fresx/frsqrtex unlocking W0 too early 

fpr.RW may clobber GPRs that are not locked.
Fixes https://bugs.dolphin-emu.org/issues/12656.
This commit is contained in:
JosJuice 2021-09-13 19:03:43 +02:00
parent ee863e6722
commit 1c4155f800
1 changed files with 6 additions and 2 deletions
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8
Source/Core/Core/PowerPC/JitArm64/JitArm64_FloatingPoint.cpp
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@ -564,13 +564,15 @@ void JitArm64::fresx(UGeckoInstruction inst)
BL(GetAsmRoutines()->fres);
gpr.Unlock(ARM64Reg::W0, ARM64Reg::W1, ARM64Reg::W2, ARM64Reg::W3, ARM64Reg::W4, ARM64Reg::W30);
gpr.Unlock(ARM64Reg::W1, ARM64Reg::W2, ARM64Reg::W3, ARM64Reg::W4, ARM64Reg::W30);
fpr.Unlock(ARM64Reg::Q0);
const ARM64Reg VD = fpr.RW(d, RegType::Duplicated);
m_float_emit.FMOV(EncodeRegToDouble(VD), ARM64Reg::X0);
SetFPRFIfNeeded(false, ARM64Reg::X0);
gpr.Unlock(ARM64Reg::W0);
}
void JitArm64::frsqrtex(UGeckoInstruction inst)
@ -591,13 +593,15 @@ void JitArm64::frsqrtex(UGeckoInstruction inst)
BL(GetAsmRoutines()->frsqrte);
gpr.Unlock(ARM64Reg::W0, ARM64Reg::W1, ARM64Reg::W2, ARM64Reg::W3, ARM64Reg::W4, ARM64Reg::W30);
gpr.Unlock(ARM64Reg::W1, ARM64Reg::W2, ARM64Reg::W3, ARM64Reg::W4, ARM64Reg::W30);
fpr.Unlock(ARM64Reg::Q0);
const ARM64Reg VD = fpr.RW(d, RegType::LowerPair);
m_float_emit.FMOV(EncodeRegToDouble(VD), ARM64Reg::X0);
SetFPRFIfNeeded(false, ARM64Reg::X0);
gpr.Unlock(ARM64Reg::W0);
}
// Since the following float conversion functions are used in non-arithmetic PPC float