#include #include #include "cpuid.h" static void mmx_3dnow_test (void); static void __attribute__ ((noinline)) do_test (void) { mmx_3dnow_test (); } int main () { unsigned int eax, ebx, ecx, edx; if (!__get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx)) return 0; /* Run 3DNow! test only if host has 3DNow! support. */ if (edx & bit_3DNOW) do_test (); return 0; }