1 /* demangle.c -- A wrapper calling libiberty cplus_demangle
2 Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
3
4 This file is part of GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
20
21 #include "config.h"
22 #include <stdlib.h>
23 #ifdef HAVE_STRING_H
24 #include <string.h>
25 #else
26 #ifdef HAVE_STRINGS_H
27 #include <strings.h>
28 #endif
29 #endif
30 #include "bfd.h"
31 #include "libiberty.h"
32 #include "demangle.h"
33 #include "budemang.h"
34
35 /* Wrapper around cplus_demangle. Strips leading underscores and
36 other such chars that would otherwise confuse the demangler. */
37
38 char *
demangle(bfd * abfd,const char * name)39 demangle (bfd *abfd, const char *name)
40 {
41 char *res, *alloc;
42 const char *pre, *suf;
43 size_t pre_len;
44
45 if (abfd != NULL && bfd_get_symbol_leading_char (abfd) == name[0])
46 ++name;
47
48 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
49 or the MS PE format. These formats have a number of leading '.'s
50 on at least some symbols, so we remove all dots to avoid
51 confusing the demangler. */
52 pre = name;
53 while (*name == '.')
54 ++name;
55 pre_len = name - pre;
56
57 alloc = NULL;
58 suf = strchr (name, '@');
59 if (suf != NULL)
60 {
61 alloc = xmalloc (suf - name + 1);
62 memcpy (alloc, name, suf - name);
63 alloc[suf - name] = '\0';
64 name = alloc;
65 }
66
67 res = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
68 if (res != NULL)
69 {
70 /* Now put back any suffix, or stripped dots. */
71 if (pre_len != 0 || suf != NULL)
72 {
73 size_t len;
74 size_t suf_len;
75 char *final;
76
77 if (alloc != NULL)
78 free (alloc);
79
80 len = strlen (res);
81 if (suf == NULL)
82 suf = res + len;
83 suf_len = strlen (suf) + 1;
84 final = xmalloc (pre_len + len + suf_len);
85
86 memcpy (final, pre, pre_len);
87 memcpy (final + pre_len, res, len);
88 memcpy (final + pre_len + len, suf, suf_len);
89 free (res);
90 res = final;
91 }
92
93 return res;
94 }
95
96 if (alloc != NULL)
97 free (alloc);
98
99 return xstrdup (pre);
100 }
101