1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1997-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                                                                      *
19***********************************************************************/
20#pragma prototyped
21/*
22 * Glenn Fowler
23 * AT&T Research
24 */
25
26#include <ast.h>
27#include <dlldefs.h>
28
29/*
30 * dlsym() with `_' weak fallback
31 */
32
33void*
34dlllook(void* dll, const char* name)
35{
36	register void*	addr;
37	char		buf[256];
38
39	if (!(addr = dlsym(dll, name)) && strlen(name) < (sizeof(buf) - 2))
40	{
41		buf[0] = '_';
42		strcpy(buf + 1, name);
43		addr = dlsym(dll, buf);
44	}
45	return addr;
46}
47