diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 143 |
1 files changed, 47 insertions, 96 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index 4c24ba7c31..b0ded20486 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -44,107 +44,55 @@ extern void TUNABLE_CALLBACK (set_x86_shstk) (tunable_val_t *) static void update_usable (struct cpu_features *cpu_features) { - /* Before COMMON_CPUID_INDEX_80000001, copy the cpuid array elements to - the usable array. */ - unsigned int i; - for (i = 0; i < COMMON_CPUID_INDEX_80000001; i++) - cpu_features->features[i].usable = cpu_features->features[i].cpuid; - - /* Before COMMON_CPUID_INDEX_80000001, clear the unknown usable bits - and the always zero bits. */ - CPU_FEATURE_UNSET (cpu_features, INDEX_1_ECX_16); - CPU_FEATURE_UNSET (cpu_features, INDEX_1_ECX_31); - CPU_FEATURE_UNSET (cpu_features, INDEX_1_EDX_10); - CPU_FEATURE_UNSET (cpu_features, INDEX_1_EDX_20); - CPU_FEATURE_UNSET (cpu_features, INDEX_1_EDX_30); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EBX_6); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EBX_22); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_13); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_15); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_16); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_23); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_24); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_ECX_26); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_0); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_1); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_5); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_6); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_7); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_9); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_11); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_12); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_13); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_17); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_19); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_21); - CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_23); - - /* EAX/EBX from COMMON_CPUID_INDEX_1 and EAX from COMMON_CPUID_INDEX_7 - aren't used for CPU feature detection. */ - cpu_features->features[COMMON_CPUID_INDEX_1].usable.eax = 0; - cpu_features->features[COMMON_CPUID_INDEX_1].usable.ebx = 0; - cpu_features->features[COMMON_CPUID_INDEX_7].usable.eax = 0; - - /* Starting from COMMON_CPUID_INDEX_80000001, copy the cpuid bits to - usable bits. */ + /* Copy the cpuid bits to usable bits for CPU featuress whose usability + in user space can be detected without additonal OS support. */ + CPU_FEATURE_SET_USABLE (cpu_features, SSE3); + CPU_FEATURE_SET_USABLE (cpu_features, PCLMULQDQ); + CPU_FEATURE_SET_USABLE (cpu_features, SSSE3); + CPU_FEATURE_SET_USABLE (cpu_features, CMPXCHG16B); + CPU_FEATURE_SET_USABLE (cpu_features, SSE4_1); + CPU_FEATURE_SET_USABLE (cpu_features, SSE4_2); + CPU_FEATURE_SET_USABLE (cpu_features, MOVBE); + CPU_FEATURE_SET_USABLE (cpu_features, POPCNT); + CPU_FEATURE_SET_USABLE (cpu_features, AES); + CPU_FEATURE_SET_USABLE (cpu_features, OSXSAVE); + CPU_FEATURE_SET_USABLE (cpu_features, TSC); + CPU_FEATURE_SET_USABLE (cpu_features, CX8); + CPU_FEATURE_SET_USABLE (cpu_features, CMOV); + CPU_FEATURE_SET_USABLE (cpu_features, CLFSH); + CPU_FEATURE_SET_USABLE (cpu_features, MMX); + CPU_FEATURE_SET_USABLE (cpu_features, FXSR); + CPU_FEATURE_SET_USABLE (cpu_features, SSE); + CPU_FEATURE_SET_USABLE (cpu_features, SSE2); + CPU_FEATURE_SET_USABLE (cpu_features, HTT); + CPU_FEATURE_SET_USABLE (cpu_features, BMI1); + CPU_FEATURE_SET_USABLE (cpu_features, HLE); + CPU_FEATURE_SET_USABLE (cpu_features, BMI2); + CPU_FEATURE_SET_USABLE (cpu_features, ERMS); + CPU_FEATURE_SET_USABLE (cpu_features, RTM); + CPU_FEATURE_SET_USABLE (cpu_features, RDSEED); + CPU_FEATURE_SET_USABLE (cpu_features, ADX); + CPU_FEATURE_SET_USABLE (cpu_features, CLFLUSHOPT); + CPU_FEATURE_SET_USABLE (cpu_features, CLWB); + CPU_FEATURE_SET_USABLE (cpu_features, SHA); + CPU_FEATURE_SET_USABLE (cpu_features, PREFETCHWT1); + CPU_FEATURE_SET_USABLE (cpu_features, OSPKE); + CPU_FEATURE_SET_USABLE (cpu_features, WAITPKG); + CPU_FEATURE_SET_USABLE (cpu_features, GFNI); + CPU_FEATURE_SET_USABLE (cpu_features, RDPID); + CPU_FEATURE_SET_USABLE (cpu_features, CLDEMOTE); + CPU_FEATURE_SET_USABLE (cpu_features, MOVDIRI); + CPU_FEATURE_SET_USABLE (cpu_features, MOVDIR64B); + CPU_FEATURE_SET_USABLE (cpu_features, FSRM); + CPU_FEATURE_SET_USABLE (cpu_features, SERIALIZE); + CPU_FEATURE_SET_USABLE (cpu_features, TSXLDTRK); CPU_FEATURE_SET_USABLE (cpu_features, LAHF64_SAHF64); - CPU_FEATURE_SET_USABLE (cpu_features, SVM); CPU_FEATURE_SET_USABLE (cpu_features, LZCNT); CPU_FEATURE_SET_USABLE (cpu_features, SSE4A); CPU_FEATURE_SET_USABLE (cpu_features, PREFETCHW); - CPU_FEATURE_SET_USABLE (cpu_features, XOP); - CPU_FEATURE_SET_USABLE (cpu_features, LWP); - CPU_FEATURE_SET_USABLE (cpu_features, FMA4); CPU_FEATURE_SET_USABLE (cpu_features, TBM); - CPU_FEATURE_SET_USABLE (cpu_features, SYSCALL_SYSRET); - CPU_FEATURE_SET_USABLE (cpu_features, NX); - CPU_FEATURE_SET_USABLE (cpu_features, PAGE1GB); CPU_FEATURE_SET_USABLE (cpu_features, RDTSCP); - CPU_FEATURE_SET_USABLE (cpu_features, LM); - CPU_FEATURE_SET_USABLE (cpu_features, XSAVEOPT); - CPU_FEATURE_SET_USABLE (cpu_features, XSAVEC); - CPU_FEATURE_SET_USABLE (cpu_features, XGETBV_ECX_1); - CPU_FEATURE_SET_USABLE (cpu_features, XSAVES); - CPU_FEATURE_SET_USABLE (cpu_features, XFD); - CPU_FEATURE_SET_USABLE (cpu_features, INVARIANT_TSC); CPU_FEATURE_SET_USABLE (cpu_features, WBNOINVD); - CPU_FEATURE_SET_USABLE (cpu_features, AVX512_BF16); - - /* MPX has been deprecated. */ - CPU_FEATURE_UNSET (cpu_features, MPX); - - /* Clear the usable bits which require OS support. */ - CPU_FEATURE_UNSET (cpu_features, FMA); - CPU_FEATURE_UNSET (cpu_features, AVX); - CPU_FEATURE_UNSET (cpu_features, F16C); - CPU_FEATURE_UNSET (cpu_features, AVX2); - CPU_FEATURE_UNSET (cpu_features, AVX512F); - CPU_FEATURE_UNSET (cpu_features, AVX512DQ); - CPU_FEATURE_UNSET (cpu_features, AVX512_IFMA); - CPU_FEATURE_UNSET (cpu_features, AVX512PF); - CPU_FEATURE_UNSET (cpu_features, AVX512ER); - CPU_FEATURE_UNSET (cpu_features, AVX512CD); - CPU_FEATURE_UNSET (cpu_features, AVX512BW); - CPU_FEATURE_UNSET (cpu_features, AVX512VL); - CPU_FEATURE_UNSET (cpu_features, AVX512_VBMI); - CPU_FEATURE_UNSET (cpu_features, PKU); - CPU_FEATURE_UNSET (cpu_features, AVX512_VBMI2); - CPU_FEATURE_UNSET (cpu_features, VAES); - CPU_FEATURE_UNSET (cpu_features, VPCLMULQDQ); - CPU_FEATURE_UNSET (cpu_features, AVX512_VNNI); - CPU_FEATURE_UNSET (cpu_features, AVX512_BITALG); - CPU_FEATURE_UNSET (cpu_features, AVX512_VPOPCNTDQ); - CPU_FEATURE_UNSET (cpu_features, AVX512_4VNNIW); - CPU_FEATURE_UNSET (cpu_features, AVX512_4FMAPS); - CPU_FEATURE_UNSET (cpu_features, AVX512_VP2INTERSECT); - CPU_FEATURE_UNSET (cpu_features, AMX_BF16); - CPU_FEATURE_UNSET (cpu_features, AMX_TILE); - CPU_FEATURE_UNSET (cpu_features, AMX_INT8); - CPU_FEATURE_UNSET (cpu_features, XOP); - CPU_FEATURE_UNSET (cpu_features, FMA4); - CPU_FEATURE_UNSET (cpu_features, XSAVEC); - CPU_FEATURE_UNSET (cpu_features, XFD); - CPU_FEATURE_UNSET (cpu_features, AVX512_BF16); /* Can we call xgetbv? */ if (CPU_FEATURES_CPU_P (cpu_features, OSXSAVE)) @@ -243,8 +191,11 @@ update_usable (struct cpu_features *cpu_features) CPU_FEATURE_SET_USABLE (cpu_features, AMX_INT8); } - - /* XFD is usable only when OSXSAVE is enabled. */ + /* These features are usable only when OSXSAVE is enabled. */ + CPU_FEATURE_SET (cpu_features, XSAVE); + CPU_FEATURE_SET_USABLE (cpu_features, XSAVEOPT); + CPU_FEATURE_SET_USABLE (cpu_features, XSAVEC); + CPU_FEATURE_SET_USABLE (cpu_features, XGETBV_ECX_1); CPU_FEATURE_SET_USABLE (cpu_features, XFD); /* For _dl_runtime_resolve, set xsave_state_size to xsave area |