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Update x64emu.c #507

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Feb 3, 2023
Merged

Update x64emu.c #507

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11 changes: 10 additions & 1 deletion src/emu/x64emu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -518,10 +518,19 @@ void applyFlushTo0(x64emu_t* emu)
#ifdef __x86_64__
_mm_setcsr(_mm_getcsr() | (emu->mxcsr.x32&0x8040));
#elif defined(__aarch64__)
#ifdef __ANDROID__
uint64_t fpcr;
__asm__ __volatile__ ("mrs %0, fpcr":"=r"(fpcr));
#else
uint64_t fpcr = __builtin_aarch64_get_fpcr();
#endif
fpcr &= ~((1<<24) | (1<<1)); // clear bit FZ (24) and AH (1)
fpcr |= (emu->mxcsr.f.MXCSR_FZ)<<24; // set FZ as mxcsr FZ
fpcr |= ((emu->mxcsr.f.MXCSR_DAZ)^(emu->mxcsr.f.MXCSR_FZ))<<1; // set AH if DAZ different from FZ
#ifdef __ANDROID__
__asm__ __volatile__ ("msr fpcr, %0"::"r"(fpcr));
#else
__builtin_aarch64_set_fpcr(fpcr);
#endif
}
#endif
}