diff options
Diffstat (limited to 'nptl/sysdeps/x86_64')
| -rw-r--r-- | nptl/sysdeps/x86_64/tcb-offsets.sym | 1 | ||||
| -rw-r--r-- | nptl/sysdeps/x86_64/tls.h | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/nptl/sysdeps/x86_64/tcb-offsets.sym b/nptl/sysdeps/x86_64/tcb-offsets.sym index 8118d2df8b..a9ede75c96 100644 --- a/nptl/sysdeps/x86_64/tcb-offsets.sym +++ b/nptl/sysdeps/x86_64/tcb-offsets.sym @@ -10,3 +10,4 @@ CLEANUP offsetof (struct pthread, cleanup) CLEANUP_PREV offsetof (struct _pthread_cleanup_buffer, __prev) MUTEX_FUTEX offsetof (pthread_mutex_t, __data.__lock) MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) +POINTER_GUARD offsetof (tcbhead_t, pointer_guard) diff --git a/nptl/sysdeps/x86_64/tls.h b/nptl/sysdeps/x86_64/tls.h index 516827b8e1..13cf6fb3f5 100644 --- a/nptl/sysdeps/x86_64/tls.h +++ b/nptl/sysdeps/x86_64/tls.h @@ -49,6 +49,7 @@ typedef struct int multiple_threads; uintptr_t sysinfo; uintptr_t stack_guard; + uintptr_t pointer_guard; } tcbhead_t; #else /* __ASSEMBLER__ */ @@ -329,6 +330,15 @@ typedef struct ((descr)->header.stack_guard \ = THREAD_GETMEM (THREAD_SELF, header.stack_guard)) + +/* Set the pointer guard field in the TCB head. */ +#define THREAD_SET_POINTER_GUARD(value) \ + THREAD_SETMEM (THREAD_SELF, header.pointer_guard, value) +#define THREAD_COPY_POINTER_GUARD(descr) \ + ((descr)->header.pointer_guard \ + = THREAD_GETMEM (THREAD_SELF, header.pointer_guard)) + + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |