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/* Write formatted list with names for addresses in backtrace to a file.
Copyright (C) 1998 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <execinfo.h>
#include <string.h>
#include <sys/uio.h>
#include <stdio-common/_itoa.h>
#include <elf/ldsodefs.h>
#if __ELF_NATIVE_CLASS == 32
# define WORD_WIDTH 8
#else
/* We assyme 64bits. */
# define WORD_WIDTH 16
#endif
void
__backtrace_symbols_fd (array, size, fd)
void *const *array;
int size;
int fd;
{
struct iovec iov[9];
int cnt;
for (cnt = 0; cnt < size; ++cnt)
{
char buf[WORD_WIDTH];
Dl_info info;
size_t last = 0;
if (_dl_addr (array[cnt], &info)
&& info.dli_fname && info.dli_fname[0] != '\0')
{
/* Name of the file. */
iov[0].iov_base = (void *) info.dli_fname;
iov[0].iov_len = strlen (info.dli_fname);
last = 1;
/* Symbol name. */
if (info.dli_sname != NULL)
{
char buf2[WORD_WIDTH];
size_t diff;
iov[1].iov_base = (void *) "(";
iov[1].iov_len = 1;
iov[2].iov_base = (void *) info.dli_sname;
iov[2].iov_len = strlen (info.dli_sname);
if (array[cnt] >= (void *) info.dli_saddr)
{
iov[3].iov_base = (void *) "+0x";
diff = array[cnt] - info.dli_saddr;
}
else
{
iov[3].iov_base = (void *) "-0x";
diff = info.dli_saddr - array[cnt];
}
iov[3].iov_len = 3;
iov[4].iov_base = _itoa_word ((unsigned long int) diff,
&buf2[WORD_WIDTH], 16, 0);
iov[4].iov_len = &buf2[WORD_WIDTH] - (char *) iov[4].iov_base;
iov[5].iov_base = (void *) ")";
iov[5].iov_len = 1;
last = 6;
}
}
iov[last].iov_base = (void *) "[0x";
iov[last].iov_len = 3;
++last;
iov[last].iov_base = _itoa_word ((unsigned long int) array[cnt],
&buf[WORD_WIDTH], 16, 0);
iov[last].iov_len = &buf[WORD_WIDTH] - (char *) iov[last].iov_base;
++last;
iov[last].iov_base = (void *) "]\n";
iov[last].iov_len = 2;
++last;
__writev (fd, iov, last);
}
}
weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
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