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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-03-28 19:22:59 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-04-02 11:19:36 -0700 |
| commit | e1203f48239fbb9832db6ed3a0d2a008e317aff9 (patch) | |
| tree | 2f38f56d3ed89618bb07623ae39117b36148992b | |
| parent | 3597d65be2a44f063ef12bb907fdad8567aa3e6a (diff) | |
| download | glibc-e1203f48239fbb9832db6ed3a0d2a008e317aff9.tar.gz glibc-e1203f48239fbb9832db6ed3a0d2a008e317aff9.tar.xz glibc-e1203f48239fbb9832db6ed3a0d2a008e317aff9.zip | |
Initial Enhanced REP MOVSB/STOSB (ERMS) support
The newer Intel processors support Enhanced REP MOVSB/STOSB (ERMS) which has a feature bit in CPUID. This patch adds the Enhanced REP MOVSB/STOSB (ERMS) bit to x86 cpu-features. * sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New. (index_cpu_ERMS): Likewise. (reg_ERMS): Likewise. (cherry picked from commit 0791f91dff9a77263fa8173b143d854cad902c6d)
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index 48a99041a9..100e31b1ba 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -51,6 +51,7 @@ #define bit_cpu_FMA4 (1 << 16) /* COMMON_CPUID_INDEX_7. */ +#define bit_cpu_ERMS (1 << 9) #define bit_cpu_RTM (1 << 11) #define bit_cpu_AVX2 (1 << 5) #define bit_cpu_AVX512F (1 << 16) @@ -82,6 +83,7 @@ # define index_cpu_SSE4_2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET # define index_cpu_AVX COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET # define index_cpu_AVX2 COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET +# define index_cpu_ERMS COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET # define index_arch_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE # define index_arch_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE @@ -224,6 +226,7 @@ extern const struct cpu_features *__get_cpu_features (void) # define index_cpu_AVX2 COMMON_CPUID_INDEX_7 # define index_cpu_AVX512F COMMON_CPUID_INDEX_7 # define index_cpu_AVX512DQ COMMON_CPUID_INDEX_7 +# define index_cpu_ERMS COMMON_CPUID_INDEX_7 # define index_cpu_RTM COMMON_CPUID_INDEX_7 # define index_cpu_FMA COMMON_CPUID_INDEX_1 # define index_cpu_FMA4 COMMON_CPUID_INDEX_80000001 @@ -240,6 +243,7 @@ extern const struct cpu_features *__get_cpu_features (void) # define reg_AVX2 ebx # define reg_AVX512F ebx # define reg_AVX512DQ ebx +# define reg_ERMS ebx # define reg_RTM ebx # define reg_FMA ecx # define reg_FMA4 ecx |