binutils/budemang.c

   1 /* demangle.c -- A wrapper calling libiberty cplus_demangle
   2    Copyright 2002, 2003 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., 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, 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 *
  39 demangle (bfd *abfd, const char *name)
  40 {
  41   char *res;
  42   const char *p;
  43
  44   if (abfd != NULL && bfd_get_symbol_leading_char (abfd) == name[0])
  45     ++name;
  46
  47   /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
  48      or the MS PE format.  These formats have a number of leading '.'s
  49      on at least some symbols, so we remove all dots to avoid
  50      confusing the demangler.  */
  51   p = name;
  52   while (*p == '.')
  53     ++p;
  54
  55   res = cplus_demangle (p, DMGL_ANSI | DMGL_PARAMS);
  56   if (res)
  57     {
  58       size_t dots = p - name;
  59
  60       /* Now put back any stripped dots.  */
  61       if (dots != 0)
  62         {
  63           size_t len = strlen (res) + 1;
  64           char *add_dots = xmalloc (len + dots);
  65
  66           memcpy (add_dots, name, dots);
  67           memcpy (add_dots + dots, res, len);
  68           free (res);
  69           res = add_dots;
  70         }
  71       return res;
  72     }
  73
  74   return xstrdup (name);
  75 }