diff options
Diffstat (limited to 'sysdeps/x86_64')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.c | 7 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.h | 9 |
2 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c index dc3b417c79..992cbfb754 100644 --- a/sysdeps/x86_64/multiarch/init-arch.c +++ b/sysdeps/x86_64/multiarch/init-arch.c @@ -143,6 +143,13 @@ __init_cpu_features (void) else kind = arch_kind_other; + if (__cpu_features.max_cpuid >= 7) + __cpuid_count (7, 0, + __cpu_features.cpuid[COMMON_CPUID_INDEX_7].eax, + __cpu_features.cpuid[COMMON_CPUID_INDEX_7].ebx, + __cpu_features.cpuid[COMMON_CPUID_INDEX_7].ecx, + __cpu_features.cpuid[COMMON_CPUID_INDEX_7].edx); + /* Can we call xgetbv? */ if (CPUID_OSXSAVE) { diff --git a/sysdeps/x86_64/multiarch/init-arch.h b/sysdeps/x86_64/multiarch/init-arch.h index d3009b2e42..0aece18de3 100644 --- a/sysdeps/x86_64/multiarch/init-arch.h +++ b/sysdeps/x86_64/multiarch/init-arch.h @@ -26,6 +26,8 @@ #define bit_FMA4_Usable (1 << 8) /* CPUID Feature flags. */ + +/* COMMON_CPUID_INDEX_1. */ #define bit_SSE2 (1 << 26) #define bit_SSSE3 (1 << 9) #define bit_SSE4_1 (1 << 19) @@ -36,6 +38,9 @@ #define bit_FMA (1 << 12) #define bit_FMA4 (1 << 16) +/* COMMON_CPUID_INDEX_7. */ +#define bit_RTM (1 << 11) + /* XCR0 Feature flags. */ #define bit_XMM_state (1 << 1) #define bit_YMM_state (2 << 1) @@ -67,6 +72,7 @@ enum { COMMON_CPUID_INDEX_1 = 0, + COMMON_CPUID_INDEX_7, COMMON_CPUID_INDEX_80000001, /* for AMD */ /* Keep the following line at the end. */ COMMON_CPUID_INDEX_MAX @@ -137,6 +143,8 @@ extern const struct cpu_features *__get_cpu_features (void) HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_FMA) # define CPUID_FMA4 \ HAS_CPUID_FLAG (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4) +# define CPUID_RTM \ + HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_RTM) /* HAS_* evaluates to true if we may use the feature at runtime. */ # define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2) @@ -144,6 +152,7 @@ extern const struct cpu_features *__get_cpu_features (void) # define HAS_SSSE3 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3) # define HAS_SSE4_1 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1) # define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2) +# define HAS_RTM HAS_CPU_FEATURE (COMMON_CPUID_INDEX_7, ebx, bit_RTM) # define index_Fast_Rep_String FEATURE_INDEX_1 # define index_Fast_Copy_Backward FEATURE_INDEX_1 |