summaryrefslogtreecommitdiff
path: root/elf/dl-deps.c
diff options
context:
space:
mode:
Diffstat (limited to 'elf/dl-deps.c')
-rw-r--r--elf/dl-deps.c73
1 files changed, 47 insertions, 26 deletions
diff --git a/elf/dl-deps.c b/elf/dl-deps.c
index f034196762..7a6772979b 100644
--- a/elf/dl-deps.c
+++ b/elf/dl-deps.c
@@ -32,7 +32,7 @@ _dl_map_object_deps (struct link_map *map,
struct link_map *map;
struct list *next;
};
- struct list head[2 + npreloads], *tailp, *scanp;
+ struct list *head, *tailp, *scanp;
struct list duphead, *duptailp;
unsigned int nduplist;
unsigned int nlist, naux, i;
@@ -49,36 +49,57 @@ _dl_map_object_deps (struct link_map *map,
naux = nlist = 0;
-#define AUXTAG (DT_NUM + DT_PROCNUM + DT_EXTRATAGIDX (DT_AUXILIARY))
+ /* XXX The AUXILIARY implementation isn't correct in the moment. XXX
+ XXX The problem is that we currently do not handle auxiliary XXX
+ XXX entries in the loaded objects. XXX */
+#define AUXTAG (DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM \
+ + DT_EXTRATAGIDX (DT_AUXILIARY))
+
+ /* First determine the number of auxiliary objects we have to load. */
if (map->l_info[AUXTAG])
{
- /* There is an auxiliary library specified. We try to load it,
- and if we can, use its symbols in preference to our own.
- But if we can't load it, we just silently ignore it.
- XXX support multiple DT_AUXILIARYs?
- */
- struct link_map *aux;
- void openaux (void)
- {
- const char *strtab
- = ((void *) map->l_addr + map->l_info[DT_STRTAB]->d_un.d_ptr);
- aux = _dl_map_object (map, strtab + map->l_info[AUXTAG]->d_un.d_val,
- map->l_type == lt_executable ? lt_library :
- map->l_type, trace_mode);
- }
- char *errstring;
- const char *objname;
- if (! _dl_catch_error (&errstring, &objname, &openaux))
- {
- /* The auxiliary object is actually there. Use it
- as the first search element, even before MAP itself. */
- preload (aux);
- naux = 1;
- }
+ ElfW(Dyn) *d;
+ for (d = map->l_ld; d->d_tag != DT_NULL; ++d)
+ if (d->d_tag == DT_AUXILIARY)
+ ++naux;
+ }
+
+ /* Now we can allocate the array for the linker maps. */
+ head = (struct list *) alloca (sizeof (struct list)
+ * (naux + npreloads + 2));
+
+ /* Load the auxiliary objects, even before the object itself. */
+ if (map->l_info[AUXTAG])
+ {
+ /* There is at least one auxiliary library specified. We try to
+ load it, and if we can, use its symbols in preference to our
+ own. But if we can't load it, we just silently ignore it. */
+ const char *strtab
+ = ((void *) map->l_addr + map->l_info[DT_STRTAB]->d_un.d_ptr);
+ ElfW(Dyn) *d;
+
+ for (d = map->l_ld; d->d_tag != DT_NULL; ++d)
+ if (d->d_tag == DT_AUXILIARY)
+ {
+ struct link_map *aux;
+ void openaux (void)
+ {
+ aux = _dl_map_object (map, strtab + d->d_un.d_val,
+ (map->l_type == lt_executable
+ ? lt_library : map->l_type),
+ trace_mode);
+ }
+ char *errstring;
+ const char *objname;
+ if (! _dl_catch_error (&errstring, &objname, openaux))
+ /* The auxiliary object is actually there. Use it as
+ the first search element, even before MAP itself. */
+ preload (aux);
+ }
}
- /* Start the search list with one element: MAP itself. */
+ /* Next load MAP itself. */
preload (map);
/* Add the preloaded items after MAP but before any of its dependencies. */