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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-08-14 05:54:25 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-08-14 05:54:38 -0700 |
| commit | 73322d5ff6ad71c65f875095c4801771cff9ab2d (patch) | |
| tree | 6dfe6b618b2501adfed46076a4d06cc3b4b0b5e0 /sysdeps/x86/cpu-features.h | |
| parent | dbc303ef76503793b4744004984d248346602479 (diff) | |
| download | glibc-73322d5ff6ad71c65f875095c4801771cff9ab2d.tar.gz glibc-73322d5ff6ad71c65f875095c4801771cff9ab2d.tar.xz glibc-73322d5ff6ad71c65f875095c4801771cff9ab2d.zip | |
x86: Add IBT/SHSTK bits to cpu-features
Add IBT/SHSTK bits to cpu-features for Shadow Stack in Intel Control-flow Enforcement Technology (CET) instructions: https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-enforcement-technology-preview.pdf * sysdeps/x86/cpu-features.h (bit_cpu_BIT): New. (bit_cpu_SHSTK): Likewise. (index_cpu_IBT): Likewise. (index_cpu_SHSTK): Likewise. (reg_IBT): Likewise. (reg_SHSTK): Likewise. * sysdeps/x86/cpu-tunables.c (TUNABLE_CALLBACK (set_hwcaps)): Handle index_cpu_IBT and index_cpu_SHSTK.
Diffstat (limited to 'sysdeps/x86/cpu-features.h')
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index af52689123..9733e6ee66 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -74,6 +74,8 @@ #define bit_cpu_AVX512CD (1 << 28) #define bit_cpu_AVX512BW (1 << 30) #define bit_cpu_AVX512VL (1u << 31) +#define bit_cpu_IBT (1u << 20) +#define bit_cpu_SHSTK (1u << 7) /* XCR0 Feature flags. */ #define bit_XMM_state (1 << 1) @@ -103,6 +105,8 @@ # 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_cpu_MOVBE COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET +# define index_cpu_IBT COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EDX_OFFSET +# define index_cpu_SHSTK COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_ECX_OFFSET # define index_arch_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE # define index_arch_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE @@ -220,6 +224,8 @@ extern const struct cpu_features *__get_cpu_features (void) # define index_cpu_LZCNT COMMON_CPUID_INDEX_1 # define index_cpu_MOVBE COMMON_CPUID_INDEX_1 # define index_cpu_POPCNT COMMON_CPUID_INDEX_1 +# define index_cpu_IBT COMMON_CPUID_INDEX_7 +# define index_cpu_SHSTK COMMON_CPUID_INDEX_7 # define reg_CX8 edx # define reg_CMOV edx @@ -249,6 +255,8 @@ extern const struct cpu_features *__get_cpu_features (void) # define reg_LZCNT ecx # define reg_MOVBE ecx # define reg_POPCNT ecx +# define reg_IBT edx +# define reg_SHSTK ecx # define index_arch_Fast_Rep_String FEATURE_INDEX_1 # define index_arch_Fast_Copy_Backward FEATURE_INDEX_1 |