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authorUlrich Drepper <drepper@redhat.com>2005-12-18 06:58:22 +0000
committerUlrich Drepper <drepper@redhat.com>2005-12-18 06:58:22 +0000
commit827b70873b41363c864fb65e99829204595d0f85 (patch)
tree5d2e3811b6b0da44f18a7c8920dffdc524e3cd66 /nptl
parent8292f6fc71a60e92a23be053c500f504c6802c54 (diff)
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* elf/Versions [GLIBC_PRIVATE]: Export __pointer_chk_guard if defined.
* elf/rtld.c: Define __pointer_chk_guard_local and if necessary __pointer_chk_guard. (_rtld_global_ro): Initialize _dl_pointer_guard. (dl_main): Initialize __pointer_chk_guard_local and either __pointer_chk_guard or TLS value if necessary. (process_envvars): Recognize and handle LD_POINTER_GUARD. * sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_pointer_guard. * sysdeps/i386/__longjmp.S: Use PTR_DEMANGLE for PC if defined. * sysdeps/x86_64/__longjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Use PTR_MANGLE for PC if defined. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/setjmp.S: Likewise. [IS_IN_rtld]: Avoid call to __sigjmp_save. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and PTR_DEMANGLE. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/i386/elf/setjmp.S: Removed. * sysdeps/i386/elf/bsd-setjmp.S: Removed.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog10
-rw-r--r--nptl/pthread_create.c5
-rw-r--r--nptl/sysdeps/i386/tcb-offsets.sym1
-rw-r--r--nptl/sysdeps/i386/tls.h9
-rw-r--r--nptl/sysdeps/x86_64/tcb-offsets.sym1
-rw-r--r--nptl/sysdeps/x86_64/tls.h10
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 */