| --- crc/crc32c-intel.c 2010-08-27 09:04:13.000000000 +0200 |
| +++ crc/crc32c-intel.c.new2 2010-09-17 15:04:28.000000000 +0200 |
| @@ -74,30 +74,12 @@ |
| return crc; |
| } |
| |
| -static void do_cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx, |
| - unsigned int *edx) |
| -{ |
| - int id = *eax; |
| - |
| - asm("movl %4, %%eax;" |
| - "cpuid;" |
| - "movl %%eax, %0;" |
| - "movl %%ebx, %1;" |
| - "movl %%ecx, %2;" |
| - "movl %%edx, %3;" |
| - : "=r" (*eax), "=r" (*ebx), "=r" (*ecx), "=r" (*edx) |
| - : "r" (id) |
| - : "eax", "ebx", "ecx", "edx"); |
| -} |
| - |
| -int crc32c_intel_works(void) |
| -{ |
| - unsigned int eax, ebx, ecx, edx; |
| - |
| - eax = 1; |
| - |
| - do_cpuid(&eax, &ebx, &ecx, &edx); |
| - return (ecx & (1 << 20)) != 0; |
| +int crc32c_intel_works(void) { |
| + unsigned int _eax, _ebx, _ecx, _edx; |
| + unsigned int op = 1; |
| + asm ("cpuid" : "=a" (_eax), "=r" (_ebx), "=c" (_ecx), "=d" (_edx) |
| + : "a" (op)); |
| + return (_ecx & (1 << 20)) != 0; |
| } |
| |
| #endif /* ARCH_HAVE_SSE */ |
