diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 10 | ||||
| -rw-r--r-- | nptl/pthread_create.c | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/i386/tcb-offsets.sym | 1 | ||||
| -rw-r--r-- | nptl/sysdeps/i386/tls.h | 9 | ||||
| -rw-r--r-- | nptl/sysdeps/x86_64/tcb-offsets.sym | 1 | ||||
| -rw-r--r-- | nptl/sysdeps/x86_64/tls.h | 10 |
6 files changed, 36 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 9db2e498c5..7a35696b38 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,13 @@ +2005-12-17 Ulrich Drepper <drepper@redhat.com> + + * pthread_create.c (__pthread_create_2_1): Use + THREAD_COPY_POINTER_GUARD if available. + * sysdeps/i386/tcb-offsets.sym: Add POINTER_GUARD. + * sysdeps/x86_64/tcb-offsets.sym: Likewise. + * sysdeps/i386/tls.h (tcbhead_t): Add pointer_guard. + Define THREAD_SET_POINTER_GUARD and THREAD_COPY_POINTER_GUARD. + * sysdeps/x86_64/tls.h: Likewise. + 2005-12-15 Roland McGrath <roland@redhat.com> * sysdeps/unix/sysv/linux/mq_notify.c: Don't use sysdeps/generic. diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index f2f206be5a..c11d972572 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -415,6 +415,11 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg) THREAD_COPY_STACK_GUARD (pd); #endif + /* Copy the pointer guard value. */ +#ifdef THREAD_COPY_POINTER_GUARD + THREAD_COPY_POINTER_GUARD (pd); +#endif + /* Determine scheduling parameters for the thread. */ if (attr != NULL && __builtin_expect ((iattr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0, 0) diff --git a/nptl/sysdeps/i386/tcb-offsets.sym b/nptl/sysdeps/i386/tcb-offsets.sym index 4e0444ba38..7c8d9a5ca5 100644 --- a/nptl/sysdeps/i386/tcb-offsets.sym +++ b/nptl/sysdeps/i386/tcb-offsets.sym @@ -11,3 +11,4 @@ SYSINFO_OFFSET offsetof (tcbhead_t, sysinfo) CLEANUP offsetof (struct pthread, cleanup) CLEANUP_PREV offsetof (struct _pthread_cleanup_buffer, __prev) MUTEX_FUTEX offsetof (pthread_mutex_t, __data.__lock) +POINTER_GUARD offsetof (tcbhead_t, pointer_guard) diff --git a/nptl/sysdeps/i386/tls.h b/nptl/sysdeps/i386/tls.h index 65566ff7a7..a870a848cf 100644 --- a/nptl/sysdeps/i386/tls.h +++ b/nptl/sysdeps/i386/tls.h @@ -50,6 +50,7 @@ typedef struct int multiple_threads; uintptr_t sysinfo; uintptr_t stack_guard; + uintptr_t pointer_guard; } tcbhead_t; # define TLS_MULTIPLE_THREADS_IN_TCB 1 @@ -425,6 +426,14 @@ union user_desc_init = 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 */ 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 */ |