diff options
Diffstat (limited to 'utils/cpuid.h')
| -rw-r--r-- | utils/cpuid.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/utils/cpuid.h b/utils/cpuid.h index 2bac69a..53da789 100644 --- a/utils/cpuid.h +++ b/utils/cpuid.h @@ -5,9 +5,21 @@ static inline void __cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) { /* ecx is often an input as well as an output. */ - asm volatile("cpuid" + asm volatile( +#if defined(__i386__) && defined(__PIC__) + "push %%ebx\n" + "cpuid\n" + "movl %%ebx, %1\n" + "pop %%ebx\n" +#else + "cpuid\n" +#endif : "=a" (*eax), +#if defined(__i386__) && defined(__PIC__) + "=r" (*ebx), +#else "=b" (*ebx), +#endif "=c" (*ecx), "=d" (*edx) : "0" (*eax), "2" (*ecx)); |