From d66e34cd423425c348bcc83df127dd19711b0b9a Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 2 May 1995 06:35:55 +0000 Subject: * sysdeps/mach/i386/sysdep.h (SNARF_ARGS, CALL_WITH_SP): Rewritten. * sysdeps/i386/dl-machine.h: New file. * sysdeps/stub/dl-machine.h: New file. * sysdeps/i386/dl-runtime.c: New file. * sysdeps/stub/dl-runtime.c: New file. * sysdeps/i386/elf/start.S: New file. * sysdeps/generic/dl-sysdep.c: New file. * sysdeps/mach/hurd/dl-sysdep.c: New file. --- elf/dlsym.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 elf/dlsym.c (limited to 'elf/dlsym.c') diff --git a/elf/dlsym.c b/elf/dlsym.c new file mode 100644 index 0000000..6d87810 --- /dev/null +++ b/elf/dlsym.c @@ -0,0 +1,46 @@ +/* dlsym -- Look up a symbol in a shared object loaded by `dlopen'. +Copyright (C) 1995 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 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + + +void * +dlsym (void *handle, const char *name) +{ + struct link_map *map = handle; + struct link_map *real_next; + Elf32_Addr value; + int lose; + void doit (void) + { + const Elf32_Sym *ref = NULL; + value = _dl_lookup_symbol (name, &ref, map); + } + + /* Confine the symbol scope to just this map. */ + real_next = map->l_next; + map->l_next = NULL; + lose = _dlerror_run (doit); + map->l_next = real_next; + + return lose ? NULL : (void *) value; +} -- cgit v1.1