diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_cpu_detect.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c index b118fc8ae..588fc7c72 100644 --- a/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c @@ -67,7 +67,7 @@ #if defined(PIPE_OS_WINDOWS) #include <windows.h> -#if defined(MSVC) +#if defined(PIPE_CC_MSVC) #include <intrin.h> #endif #endif @@ -211,6 +211,27 @@ cpuid(uint32_t ax, uint32_t *p) p[3] = 0; #endif } + +static INLINE uint64_t xgetbv(void) +{ +#if defined(PIPE_CC_GCC) + uint32_t eax, edx; + + __asm __volatile ( + ".byte 0x0f, 0x01, 0xd0" // xgetbv isn't supported on gcc < 4.4 + : "=a"(eax), + "=d"(edx) + : "c"(0) + ); + + return ((uint64_t)edx << 32) | eax; +#elif defined(PIPE_CC_MSVC) && defined(_MSC_FULL_VER) && defined(_XCR_XFEATURE_ENABLED_MASK) + return _xgetbv(_XCR_XFEATURE_ENABLED_MASK); +#else + return 0; +#endif + +} #endif /* X86 or X86_64 */ void @@ -284,7 +305,9 @@ util_cpu_detect(void) util_cpu_caps.has_sse4_1 = (regs2[2] >> 19) & 1; util_cpu_caps.has_sse4_2 = (regs2[2] >> 20) & 1; util_cpu_caps.has_popcnt = (regs2[2] >> 23) & 1; - util_cpu_caps.has_avx = (regs2[2] >> 28) & 1; + util_cpu_caps.has_avx = ((regs2[2] >> 28) & 1) && // AVX + ((regs2[2] >> 27) & 1) && // OSXSAVE + ((xgetbv() & 6) == 6); // XMM & YMM util_cpu_caps.has_f16c = (regs2[2] >> 29) & 1; util_cpu_caps.has_mmx2 = util_cpu_caps.has_sse; /* SSE cpus supports mmxext too */ |