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Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/dl-vdso.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/dl-vdso.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-vdso.c b/sysdeps/unix/sysv/linux/powerpc/dl-vdso.c
new file mode 100644
index 0000000000..e1be097734
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/dl-vdso.c
@@ -0,0 +1,59 @@
+/* ELF symbol resolve functions for VDSO objects.
+ Copyright (C) 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "config.h"
+#include <dl-hash.h>
+#include <ldsodefs.h>
+
+
+void *
+internal_function
+_dl_vdso_vsym (const char *name, const char *version)
+{
+ struct link_map *map = GLRO (dl_sysinfo_map);
+ void *value = NULL;
+
+
+ if (map != NULL)
+ {
+ /* Use a WEAK REF so we don't error out if the symbol is not found. */
+ ElfW (Sym) wsym;
+ memset (&wsym, 0, sizeof (ElfW (Sym)));
+ wsym.st_info = (unsigned char) ELFW (ST_INFO (STB_WEAK, STT_NOTYPE));
+
+ /* Compute hash value to the version string. */
+ struct r_found_version vers;
+ vers.name = version;
+ vers.hidden = 1;
+ vers.hash = _dl_elf_hash (version);
+ /* We don't have a specific file where the symbol can be found. */
+ vers.filename = NULL;
+
+ /* Search the scope of the vdso map. */
+ const ElfW (Sym) *ref = &wsym;
+ lookup_t result = GLRO (dl_lookup_symbol_x) (name, map, &ref,
+ map->l_local_scope,
+ &vers, 0, 0, NULL);
+
+ if (ref != NULL)
+ value = DL_SYMBOL_ADDRESS (result, ref);
+ }
+
+ return value;
+}