about summary refs log tree commit diff
path: root/elf/dl-conflict.c
diff options
context:
space:
mode:
Diffstat (limited to 'elf/dl-conflict.c')
-rw-r--r--elf/dl-conflict.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/elf/dl-conflict.c b/elf/dl-conflict.c
new file mode 100644
index 0000000000..5426a5ad44
--- /dev/null
+++ b/elf/dl-conflict.c
@@ -0,0 +1,66 @@
+/* Resolve conflicts against already prelinked libraries.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <libintl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include "dynamic-link.h"
+
+extern unsigned long int _dl_num_cache_relocations;	/* in dl-lookup.c */
+
+void
+_dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict,
+		       ElfW(Rela) *conflictend)
+{
+  if (__builtin_expect (_dl_debug_mask & DL_DEBUG_RELOC, 0))
+    _dl_printf ("\nconflict processing: %s\n",
+		l->l_name[0] ? l->l_name : _dl_argv[0]);
+
+  {
+    /* Do the conflict relocation of the object and library GOT and other
+       data.  */
+
+    /* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code.  */
+#define RESOLVE_MAP(ref, version, flags) (*ref = NULL, 0)
+#define RESOLVE(ref, version, flags) (*ref = NULL, 0)
+#define RESOLVE_CONFLICT_FIND_MAP(map, r_offset)		\
+do								\
+  {								\
+    while (resolve_conflict_map->l_map_end < (r_offset)		\
+	   || resolve_conflict_map->l_map_start > (r_offset))	\
+      resolve_conflict_map					\
+	= resolve_conflict_map->l_next;				\
+    (map) = resolve_conflict_map;				\
+  } while (0)
+
+    struct link_map *resolve_conflict_map = _dl_loaded;
+
+#include "dynamic-link.h"
+
+    _dl_num_cache_relocations += conflictend - conflict;
+
+    for (; conflict < conflictend; ++conflict)
+      elf_machine_rela (l, conflict, NULL, NULL, (void *) conflict->r_offset);
+  }
+}