110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/* Write formatted list with names for addresses in backtrace to a file.
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Copyright (C) 1998, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <execinfo.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <stdio-common/_itoa.h>
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#include <ldsodefs.h>
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#if __ELF_NATIVE_CLASS == 32
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# define WORD_WIDTH 8
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#else
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/* We assyme 64bits. */
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# define WORD_WIDTH 16
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#endif
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void
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__backtrace_symbols_fd (array, size, fd)
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void *const *array;
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int size;
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int fd;
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{
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struct iovec iov[9];
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int cnt;
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for (cnt = 0; cnt < size; ++cnt)
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{
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char buf[WORD_WIDTH];
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Dl_info info;
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size_t last = 0;
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if (_dl_addr (array[cnt], &info)
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&& info.dli_fname && info.dli_fname[0] != '\0')
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{
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/* Name of the file. */
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iov[0].iov_base = (void *) info.dli_fname;
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iov[0].iov_len = strlen (info.dli_fname);
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last = 1;
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/* Symbol name. */
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if (info.dli_sname != NULL)
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{
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char buf2[WORD_WIDTH];
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size_t diff;
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iov[1].iov_base = (void *) "(";
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iov[1].iov_len = 1;
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iov[2].iov_base = (void *) info.dli_sname;
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iov[2].iov_len = strlen (info.dli_sname);
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if (array[cnt] >= (void *) info.dli_saddr)
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{
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iov[3].iov_base = (void *) "+0x";
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diff = array[cnt] - info.dli_saddr;
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}
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else
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{
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iov[3].iov_base = (void *) "-0x";
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diff = info.dli_saddr - array[cnt];
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}
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iov[3].iov_len = 3;
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iov[4].iov_base = _itoa_word ((unsigned long int) diff,
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&buf2[WORD_WIDTH], 16, 0);
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iov[4].iov_len = &buf2[WORD_WIDTH] - (char *) iov[4].iov_base;
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iov[5].iov_base = (void *) ")";
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iov[5].iov_len = 1;
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last = 6;
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}
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}
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iov[last].iov_base = (void *) "[0x";
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iov[last].iov_len = 3;
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++last;
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iov[last].iov_base = _itoa_word ((unsigned long int) array[cnt],
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&buf[WORD_WIDTH], 16, 0);
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iov[last].iov_len = &buf[WORD_WIDTH] - (char *) iov[last].iov_base;
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++last;
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iov[last].iov_base = (void *) "]\n";
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iov[last].iov_len = 2;
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++last;
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__writev (fd, iov, last);
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}
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}
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weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
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