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tweak avx supported check

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This commit is contained in:
FunkyFr3sh 2022-09-22 19:28:35 +02:00
parent 30dc604286
commit bcf10cb899
1 changed files with 40 additions and 7 deletions
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47
src/utils.c
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@ -13,18 +13,51 @@
BOOL util_is_avx_supported()
{
unsigned int xcr0 = 0;
const DWORD XMM_STATE_BIT = 1 << 1;
const DWORD YMM_STATE_BIT = 1 << 2;
const DWORD OS_AVX_BITS = XMM_STATE_BIT | YMM_STATE_BIT;
#if defined(_MSC_VER)
xcr0 = (unsigned int)_xgetbv(_XCR_XFEATURE_ENABLED_MASK);
#else
__asm__("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx");
const DWORD AVX_BIT = 1 << 28;
const DWORD OSXSAVE_BIT = 1 << 27;
const DWORD XSAVE_BIT = 1 << 26;
const DWORD CPU_AVX_BITS = AVX_BIT | OSXSAVE_BIT | XSAVE_BIT;
BOOL result = FALSE;
#ifdef _MSC_VER
__try
{
#endif
int info[4] = { 0 };
__cpuid(info, 1);
__cpuid(info, 0);
return (info[2] & (1 << 27)) && (info[2] & (1 << 28)) && (xcr0 & 6);
if (info[0] >= 1)
{
__cpuid(info, 1);
if ((info[2] & CPU_AVX_BITS) == CPU_AVX_BITS)
{
unsigned int xcr0 = 0;
#if defined(_MSC_VER)
xcr0 = (unsigned int)_xgetbv(_XCR_XFEATURE_ENABLED_MASK);
#else
__asm__("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx");
#endif
result = (xcr0 & OS_AVX_BITS) == OS_AVX_BITS;
}
}
#ifdef _MSC_VER
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
#endif
return result;
}
void util_limit_game_ticks()