1 /* 2 * This file is part of ltrace. 3 * Copyright (C) 2012,2013 Petr Machata, Red Hat Inc. 4 * Copyright (C) 1998,1999,2003,2004,2008,2009 Juan Cespedes 5 * Copyright (C) 2006 Ian Wienand 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of the 10 * License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA 21 */ 22 23 #include "config.h" 24 25 #include <string.h> 26 #include <stdlib.h> 27 #include <stdio.h> 28 29 #include "demangle.h" 30 #include "dict.h" 31 #include "debug.h" 32 33 #ifdef USE_DEMANGLE 34 35 /*****************************************************************************/ 36 37 static struct dict *name_cache = NULL; 38 39 const char * 40 my_demangle(const char *function_name) { 41 #ifdef USE_CXA_DEMANGLE 42 extern char *__cxa_demangle(const char *, char *, size_t *, int *); 43 #endif 44 45 debug(DEBUG_FUNCTION, "my_demangle(name=%s)", function_name); 46 47 if (name_cache == NULL) { 48 name_cache = malloc(sizeof(*name_cache)); 49 if (name_cache != NULL) 50 DICT_INIT(name_cache, char *, const char *, 51 dict_hash_string, dict_eq_string, NULL); 52 } 53 54 const char *tmp = NULL; 55 if (name_cache != NULL 56 && DICT_FIND_VAL(name_cache, &function_name, &tmp) == 0) 57 return tmp; 58 59 #ifdef HAVE_LIBIBERTY 60 tmp = cplus_demangle(function_name, 61 DMGL_ANSI | DMGL_PARAMS); 62 #elif defined USE_CXA_DEMANGLE 63 int status = 0; 64 tmp = __cxa_demangle(function_name, NULL, NULL, &status); 65 #endif 66 if (name_cache == NULL || tmp == NULL) { 67 fail: 68 if (tmp == NULL) 69 return function_name; 70 return tmp; 71 } 72 73 const char *fn_copy = strdup(function_name); 74 if (fn_copy == NULL) 75 goto fail; 76 77 if (DICT_INSERT(name_cache, &fn_copy, &tmp) < 0) { 78 free((char *)fn_copy); 79 goto fail; 80 } 81 82 return tmp; 83 } 84 85 #endif 86
