+2001-11-20 Jakub Jelinek <jakub@redhat.com>
+
+ * unwind-dw2-fde.c (__register_frame_info_bases, __register_frame):
+ Don't register empty .eh_frame sections.
+ (__deregister_frame_info_bases, __deregister_frame): Don't
+ unregister them either.
+
2001-11-19 Geoffrey Keating <geoffk@redhat.com>
* configure.in (HAVE_AS_GDWARF2_DEBUG_FLAG): Define.
__register_frame_info_bases (void *begin, struct object *ob,
void *tbase, void *dbase)
{
+ /* If .eh_frame is empty, don't register at all. */
+ if (*(uword *)begin == 0)
+ return;
+
ob->pc_begin = (void *)-1;
ob->tbase = tbase;
ob->dbase = dbase;
void
__register_frame (void *begin)
{
- struct object *ob = (struct object *) malloc (sizeof (struct object));
+ struct object *ob;
+
+ /* If .eh_frame is empty, don't register at all. */
+ if (*(uword *)begin == 0)
+ return;
+
+ ob = (struct object *) malloc (sizeof (struct object));
__register_frame_info (begin, ob);
}
struct object **p;
struct object *ob = 0;
+ /* If .eh_frame is empty, we haven't registered. */
+ if (*(uword *)begin == 0)
+ return;
+
init_object_mutex_once ();
__gthread_mutex_lock (&object_mutex);
void
__deregister_frame (void *begin)
{
- free (__deregister_frame_info (begin));
+ /* If .eh_frame is empty, we haven't registered. */
+ if (*(uword *)begin != 0)
+ free (__deregister_frame_info (begin));
}
\f