1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1997-2010 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