#include #include #include "cpuid.h" static void sse4a_test (void); static void __attribute__ ((noinline)) do_test (void) { sse4a_test (); } int main () { unsigned int eax, ebx, ecx, edx; if (!__get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx)) return 0; /* Run SSE4a test only if host has SSE4a support. */ if (ecx & bit_SSE4a) do_test (); return 0; }