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Invoke DL_AFTER_LOAD if defined 

This hook is useful for any arch-specific functionality that
should be done on loaded objects.  For the tile architecture,
the hook is already provided (though we switch to using the new
macro name with this commit) and implements a simulator notifier
so that the simulator can load Elf symbols to match the object
and generate better error messages for PC's.

Also, remove a spurious definition of DL_UNMAP in dl-runtime.c
This commit is contained in:
Chris Metcalf 2012-10-30 14:16:18 -04:00
parent 017678433c
commit 47cc1490e0
5 changed files with 15 additions and 5 deletions
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3
ChangeLog
View File

@ -1,5 +1,8 @@
2012-10-30 Chris Metcalf <cmetcalf@tilera.com>
* elf/dl-load.c (_dl_map_object_from_fd): Call DL_AFTER_LOAD
if defined.
* nss/nsswitch.h (nss_interface_function): Provide new
macro for use with NSS functions.
* grp/initgroups.c: Use new macro.

4
elf/dl-load.c
View File

@ -1580,6 +1580,10 @@ cannot enable executable stack as shared object requires");
add_name_to_object (l, ((const char *) D_PTR (l, l_info[DT_STRTAB])
+ l->l_info[DT_SONAME]->d_un.d_val));
#ifdef DL_AFTER_LOAD
DL_AFTER_LOAD (l);
#endif
/* Now that the object is fully initialized add it to the object list. */
_dl_add_to_namespace_list (l, nsid);

5
ports/ChangeLog.tile
View File

@ -1,5 +1,10 @@
2012-10-30 Chris Metcalf <cmetcalf@tilera.com>
* sysdeps/tile/dl-machine.h: Use new DL_AFTER_LOAD macro
and rename _dl_arch_map_object to _dl_after_load.
* sysdeps/tile/dl-runtime.c: Rename _dl_arch_map_object
to _dl_after_load and remove spurious DL_UNMAP definition.
* sysdeps/unix/sysv/linux/tile/init-first.c: Use better #include.
* sysdeps/unix/sysv/linux/tile/gettimeofday.c: Use gettimeofday
aliases that match existing tile ABI.

4
ports/sysdeps/tile/dl-machine.h
View File

@ -253,8 +253,8 @@ elf_machine_plt_value (struct link_map *map, const ElfW(Rela) *reloc,
}
/* Support notifying the simulator about new objects. */
void internal_function _dl_arch_map_object (struct link_map *l);
#define _dl_arch_map_object _dl_arch_map_object
void internal_function _dl_after_load (struct link_map *l);
#define DL_AFTER_LOAD _dl_after_load
/* Names of the architecture-specific auditing callback functions. */
#define ARCH_LA_PLTENTER tile_gnu_pltenter

4
ports/sysdeps/tile/dl-runtime.c
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@ -30,7 +30,7 @@
/* Support notifying the simulator about new objects. */
void internal_function
_dl_arch_map_object (struct link_map *l)
_dl_after_load (struct link_map *l)
{
int shift;
@ -75,5 +75,3 @@ _dl_unmap (struct link_map *l)
__munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
}
#define DL_UNMAP(map) _dl_unmap (map)