diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/init-arch.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c index 49b421eac8..c152ab29eb 100644 --- a/sysdeps/x86_64/multiarch/init-arch.c +++ b/sysdeps/x86_64/multiarch/init-arch.c @@ -18,6 +18,7 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <cpuid.h> #include "init-arch.h" @@ -27,12 +28,10 @@ struct cpu_features __cpu_features attribute_hidden; static void get_common_indeces (void) { - asm volatile ("cpuid" - : "=a" (__cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax), - "=b" (__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ebx), - "=c" (__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx), - "=d" (__cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx) - : "0" (1)); + __cpuid (1, __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax, + __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ebx, + __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx, + __cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx); unsigned int eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax; __cpu_features.family = (eax >> 8) & 0x0f; @@ -47,10 +46,7 @@ __init_cpu_features (void) unsigned int ecx; unsigned int edx; - asm volatile ("cpuid" - : "=a" (__cpu_features.max_cpuid), "=b" (ebx), "=c" (ecx), - "=d" (edx) - : "0" (0)); + __cpuid (0, __cpu_features.max_cpuid, ebx, ecx, edx); /* This spells out "GenuineIntel". */ if (ebx == 0x756e6547 && ecx == 0x6c65746e && edx == 0x49656e69) @@ -71,9 +67,11 @@ __init_cpu_features (void) { __cpu_features.model += extended_model; +#ifndef ENABLE_SSSE3_ON_ATOM if (__cpu_features.model == 0x1c) /* Avoid SSSE3 on Atom since it is slow. */ __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx &= ~(1 << 9); +#endif } } /* This spells out "AuthenticAMD". */ |