diff options
Diffstat (limited to 'compat/cpuid.h')
| -rw-r--r-- | compat/cpuid.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/compat/cpuid.h b/compat/cpuid.h new file mode 100644 index 0000000000..7709e35286 --- /dev/null +++ b/compat/cpuid.h @@ -0,0 +1,25 @@ +#ifndef COMPAT_CPUID_H +#define COMPAT_CPUID_H + +#if (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) +#include <cpuid.h> +#define CPUID_SSE42_BIT (1 << 20) + +static int processor_supports_sse42(void) +{ + unsigned eax, ebx, ecx, edx; + __cpuid(1, eax, ebx, ecx, edx); + return ecx & CPUID_SSE42_BIT; +} + +#else + +static int processor_supports_sse42(void) +{ + /* TODO: handle CPUID on non-GCC compilers */ + return 0; +} + +#endif + +#endif /* COMPAT_CPUID_H */ |