diff options
Diffstat (limited to 'sysdeps/x86_64/nptl')
| -rw-r--r-- | sysdeps/x86_64/nptl/tcb-offsets.sym | 1 | ||||
| -rw-r--r-- | sysdeps/x86_64/nptl/tls.h | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/x86_64/nptl/tcb-offsets.sym b/sysdeps/x86_64/nptl/tcb-offsets.sym index be63404a16..387621e88c 100644 --- a/sysdeps/x86_64/nptl/tcb-offsets.sym +++ b/sysdeps/x86_64/nptl/tcb-offsets.sym @@ -12,6 +12,7 @@ MUTEX_FUTEX offsetof (pthread_mutex_t, __data.__lock) MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) POINTER_GUARD offsetof (tcbhead_t, pointer_guard) VGETCPU_CACHE_OFFSET offsetof (tcbhead_t, vgetcpu_cache) +FEATURE_1_OFFSET offsetof (tcbhead_t, feature_1) -- Not strictly offsets, but these values are also used in the TCB. TCB_CANCELSTATE_BITMASK CANCELSTATE_BITMASK diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h index 65c0051dcf..f042a0250a 100644 --- a/sysdeps/x86_64/nptl/tls.h +++ b/sysdeps/x86_64/nptl/tls.h @@ -51,7 +51,10 @@ typedef struct uintptr_t stack_guard; uintptr_t pointer_guard; unsigned long int vgetcpu_cache[2]; - int __glibc_reserved1; + /* Bit 0: X86_FEATURE_1_IBT. + Bit 1: X86_FEATURE_1_SHSTK. + */ + unsigned int feature_1; int __glibc_unused1; /* Reservation of some values for the TM ABI. */ void *__private_tm[4]; |