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-rw-r--r--dlfcn/dlsym.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/dlfcn/dlsym.c b/dlfcn/dlsym.c
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+++ b/dlfcn/dlsym.c
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+/* Look up a symbol in a shared object loaded by `dlopen'.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <dlfcn.h>
+
+struct dlsym_args
+{
+ /* The arguments to dlsym_doit. */
+ void *handle;
+ const char *name;
+ void *who;
+
+ /* The return value of dlsym_doit. */
+ void *sym;
+};
+
+static void
+dlsym_doit (void *a)
+{
+ struct dlsym_args *args = (struct dlsym_args *) a;
+
+ args->sym = _dl_sym (args->handle, args->name, args->who);
+}
+
+
+void *
+dlsym (void *handle, const char *name)
+{
+ struct dlsym_args args;
+ args.who = __builtin_return_address (0);
+ args.handle = handle;
+ args.name = name;
+
+ return (_dlerror_run (dlsym_doit, &args) ? NULL : args.sym);
+}