1: /* Return list with names for address in backtrace.
    2:    Copyright (C) 1998, 2000 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library 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 GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <execinfo.h>
   22: #include <stdlib.h>
   23: #include <string.h>
   24: 
   25: 
   26: /* Assume the worst for the width of an address.  */
   27: #define WORD_WIDTH 16
   28: 
   29: 
   30: char **
   31: __backtrace_symbols (array, size)
   32:      void *const *array;
   33:      int size;
   34: {
   35:   int cnt;
   36:   size_t total = 0;
   37:   char **result;
   38: 
   39:   /* We can compute the text size needed for the symbols since we print
   40:      them all as "[+0x<addr>]".  */
   41:   total = size * (WORD_WIDTH + 6);
   42: 
   43:   /* Allocate memory for the result.  */
   44:   result = malloc (size * sizeof (char *) + total);
   45:   if (result != NULL)
   46:     {
   47:       char *last = (char *) (result + size);
   48: 
   49:       for (cnt = 0; cnt < size; ++cnt)
   50:         {
   51:           result[cnt] = last;
   52:           last += 1 + sprintf (last, "[+%p]", array[cnt]);
   53:         }
   54:     }
   55: 
   56:   return result;
   57: }
   58: weak_alias (__backtrace_symbols, backtrace_symbols)