diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2018-07-26 11:10:08 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-07-26 11:10:44 -0700 |
| commit | 65d87ade1ee6f3ac099105e3511bd09bdc24cf3f (patch) | |
| tree | 4a4a37507e6e33c4484f5a2f53883bc5052c927f /sysdeps/x86 | |
| parent | c9dc4d5117afea7283d5fd80c80be8cc09cde84d (diff) | |
| download | glibc-65d87ade1ee6f3ac099105e3511bd09bdc24cf3f.tar.gz glibc-65d87ade1ee6f3ac099105e3511bd09bdc24cf3f.tar.xz glibc-65d87ade1ee6f3ac099105e3511bd09bdc24cf3f.zip | |
x86: Correct index_cpu_LZCNT [BZ # 23456]
cpu-features.h has #define bit_cpu_LZCNT (1 << 5) #define index_cpu_LZCNT COMMON_CPUID_INDEX_1 #define reg_LZCNT But the LZCNT feature bit is in COMMON_CPUID_INDEX_80000001: Initial EAX Value: 80000001H ECX Extended Processor Signature and Feature Bits: Bit 05: LZCNT available index_cpu_LZCNT should be COMMON_CPUID_INDEX_80000001, not COMMON_CPUID_INDEX_1. The VMX feature bit is in COMMON_CPUID_INDEX_1: Initial EAX Value: 01H Feature Information Returned in the ECX Register: 5 VMX Reviewed-by: Carlos O'Donell <carlos@redhat.com> [BZ # 23456] * sysdeps/x86/cpu-features.h (index_cpu_LZCNT): Set to COMMON_CPUID_INDEX_80000001.
Diffstat (limited to 'sysdeps/x86')
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index 624e681e96..3807a9d611 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -204,7 +204,7 @@ extern const struct cpu_features *__get_cpu_features (void) # define index_cpu_HTT COMMON_CPUID_INDEX_1 # define index_cpu_BMI1 COMMON_CPUID_INDEX_7 # define index_cpu_BMI2 COMMON_CPUID_INDEX_7 -# define index_cpu_LZCNT COMMON_CPUID_INDEX_1 +# define index_cpu_LZCNT COMMON_CPUID_INDEX_80000001 # define index_cpu_MOVBE COMMON_CPUID_INDEX_1 # define index_cpu_POPCNT COMMON_CPUID_INDEX_1 # define index_cpu_IBT COMMON_CPUID_INDEX_7 |