diff options
Diffstat (limited to 'debug/backtracesyms.c')
-rw-r--r-- | debug/backtracesyms.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/debug/backtracesyms.c b/debug/backtracesyms.c new file mode 100644 index 0000000..db7ba36 --- /dev/null +++ b/debug/backtracesyms.c @@ -0,0 +1,58 @@ +/* Return list with names for address in backtrace. + Copyright (C) 1998, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <execinfo.h> +#include <stdlib.h> +#include <string.h> + + +/* Assume the worst for the width of an address. */ +#define WORD_WIDTH 16 + + +char ** +__backtrace_symbols (array, size) + void *const *array; + int size; +{ + int cnt; + size_t total = 0; + char **result; + + /* We can compute the text size needed for the symbols since we print + them all as "[+0x<addr>]". */ + total = size * (WORD_WIDTH + 6); + + /* Allocate memory for the result. */ + result = malloc (size * sizeof (char *) + total); + if (result != NULL) + { + char *last = (char *) (result + size); + + for (cnt = 0; cnt < size; ++cnt) + { + result[cnt] = last; + last += 1 + sprintf (last, "[+%p]", array[cnt]); + } + } + + return result; +} +weak_alias (__backtrace_symbols, backtrace_symbols) |