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| author | Ulrich Drepper <drepper@redhat.com> | 1998-08-31 17:23:45 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-08-31 17:23:45 +0000 |
| commit | 7afab53d438e9fdc3060c20cf855235aa5ef6f49 (patch) | |
| tree | 2e6dcf9891303ea88e048c86faab6c4a1377a9e8 | |
| parent | bfce746a87e205a682b85e144e056029a8a30d07 (diff) | |
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Update.
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].
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | elf/dl-close.c | 11 | ||||
| -rw-r--r-- | linuxthreads/ChangeLog | 3 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/i686/pt-machine.h | 6 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/pt-machine.h | 8 |
5 files changed, 27 insertions, 7 deletions
@@ -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> * db2/db_int.h: Use <db.h> instead of "db.h" to find header in include. diff --git a/elf/dl-close.c b/elf/dl-close.c index 0d4b176b1e..bbbeed8e58 100644 --- a/elf/dl-close.c +++ b/elf/dl-close.c @@ -17,6 +17,7 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <assert.h> #include <dlfcn.h> #include <stdlib.h> #include <string.h> @@ -139,8 +140,16 @@ _dl_close (struct link_map *map) __munmap ((caddr_t) (imap->l_addr + mapstart), mapend - mapstart); /* 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; + else + _dl_loaded = imap->l_next; +#endif if (imap->l_next) imap->l_next->l_prev = imap->l_prev; if (imap->l_searchlist && imap->l_searchlist != list) diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 88cf853c84..66847d4416 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,6 +1,7 @@ 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. 1998-08-28 13:58 Ulrich Drepper <drepper@cygnus.com> diff --git a/linuxthreads/sysdeps/i386/i686/pt-machine.h b/linuxthreads/sysdeps/i386/i686/pt-machine.h index a4b3a63f1c..d01e6cf368 100644 --- a/linuxthreads/sysdeps/i386/i686/pt-machine.h +++ b/linuxthreads/sysdeps/i386/i686/pt-machine.h @@ -26,9 +26,11 @@ testandset (int *spinlock) { int ret; - __asm__ __volatile__("xchgl %0, %1" + __asm__ __volatile__ ( + "xchgl %0, %1" : "=r"(ret), "=m"(*spinlock) - : "0"(1), "m"(*spinlock)); + : "0"(1), "m"(*spinlock) + : "memory"); return ret; } diff --git a/linuxthreads/sysdeps/i386/pt-machine.h b/linuxthreads/sysdeps/i386/pt-machine.h index 6723c80bda..7ed90b7553 100644 --- a/linuxthreads/sysdeps/i386/pt-machine.h +++ b/linuxthreads/sysdeps/i386/pt-machine.h @@ -26,9 +26,11 @@ testandset (int *spinlock) { int ret; - __asm__ __volatile__("xchgl %0, %1" - : "=r"(ret), "=m"(*spinlock) - : "0"(1), "m"(*spinlock)); + __asm__ __volatile__( + "xchgl %0, %1" + : "=r"(ret), "=m"(*spinlock) + : "0"(1), "m"(*spinlock) + : "memory"); return ret; } |