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1998-08-31  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dl-close.c (_dl_close): Update _dl_loaded if the first
	object on the list is removed.  Don't use this code for PIC.
	Reported by HJ Lu [PR libc/770].
This commit is contained in:
Ulrich Drepper 1998-08-31 17:23:45 +00:00
parent bfce746a87
commit 7afab53d43
5 changed files with 27 additions and 7 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
1998-08-31 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-close.c (_dl_close): Update _dl_loaded if the first
object on the list is removed. Don't use this code for PIC.
Reported by HJ Lu [PR libc/770].
1998-08-31 15:56 Ulrich Drepper <drepper@cygnus.com> 1998-08-31 15:56 Ulrich Drepper <drepper@cygnus.com>
* db2/db_int.h: Use <db.h> instead of "db.h" to find header in include. * db2/db_int.h: Use <db.h> instead of "db.h" to find header in include.

11
elf/dl-close.c
View File

@ -17,6 +17,7 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */ Boston, MA 02111-1307, USA. */
#include <assert.h>
#include <dlfcn.h> #include <dlfcn.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -139,8 +140,16 @@ _dl_close (struct link_map *map)
__munmap ((caddr_t) (imap->l_addr + mapstart), mapend - mapstart); __munmap ((caddr_t) (imap->l_addr + mapstart), mapend - mapstart);
/* Finally, unlink the data structure and free it. */ /* Finally, unlink the data structure and free it. */
if (imap->l_prev) #ifdef PIC
/* We will unlink the first object only if this is a statically
linked program. */
assert (imap->l_prev != NULL);
#else
if (imap->l_prev != NULL)
imap->l_prev->l_next = imap->l_next; imap->l_prev->l_next = imap->l_next;
else
_dl_loaded = imap->l_next;
#endif
if (imap->l_next) if (imap->l_next)
imap->l_next->l_prev = imap->l_prev; imap->l_next->l_prev = imap->l_prev;
if (imap->l_searchlist && imap->l_searchlist != list) if (imap->l_searchlist && imap->l_searchlist != list)

3
linuxthreads/ChangeLog
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@ -1,6 +1,7 @@
1998-08-31 Ulrich Drepper <drepper@cygnus.com> 1998-08-31 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/i386/pt-machine.h (testandset): Add memory clobber. * sysdeps/i386/i686/pt-machine.h (testandset): Add memory clobber.
* sysdeps/i386/pt-machine.h: Likewise
Suggested by Roland McGrath. Suggested by Roland McGrath.
1998-08-28 13:58 Ulrich Drepper <drepper@cygnus.com> 1998-08-28 13:58 Ulrich Drepper <drepper@cygnus.com>

6
linuxthreads/sysdeps/i386/i686/pt-machine.h
View File

@ -26,9 +26,11 @@ testandset (int *spinlock)
{ {
int ret; int ret;
__asm__ __volatile__("xchgl %0, %1" __asm__ __volatile__ (
"xchgl %0, %1"
: "=r"(ret), "=m"(*spinlock) : "=r"(ret), "=m"(*spinlock)
: "0"(1), "m"(*spinlock)); : "0"(1), "m"(*spinlock)
: "memory");
return ret; return ret;
} }

6
linuxthreads/sysdeps/i386/pt-machine.h
View File

@ -26,9 +26,11 @@ testandset (int *spinlock)
{ {
int ret; int ret;
__asm__ __volatile__("xchgl %0, %1" __asm__ __volatile__(
"xchgl %0, %1"
: "=r"(ret), "=m"(*spinlock) : "=r"(ret), "=m"(*spinlock)
: "0"(1), "m"(*spinlock)); : "0"(1), "m"(*spinlock)
: "memory");
return ret; return ret;
} }