mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 05:50:14 +00:00
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* Write formatted list with names for addresses in backtrace to a file.
|
|
Copyright (C) 1998,2000,2003,2005,2009 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 <string.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <stdio-common/_itoa.h>
|
|
#include <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;
|
|
struct link_map *map;
|
|
size_t last = 0;
|
|
|
|
if (_dl_addr (array[cnt], &info, &map, NULL)
|
|
&& info.dli_fname != NULL && 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;
|
|
|
|
if (info.dli_sname != NULL || map->l_addr != 0)
|
|
{
|
|
char buf2[WORD_WIDTH];
|
|
size_t diff;
|
|
|
|
iov[last].iov_base = (void *) "(";
|
|
iov[last].iov_len = 1;
|
|
++last;
|
|
|
|
if (info.dli_sname != NULL)
|
|
{
|
|
/* We have a symbol name. */
|
|
iov[last].iov_base = (void *) info.dli_sname;
|
|
iov[last].iov_len = strlen (info.dli_sname);
|
|
++last;
|
|
}
|
|
else
|
|
/* We have no symbol, so describe it as relative to the file.
|
|
The load bias is more useful to the user than the load
|
|
address. The use of these addresses is to calculate an
|
|
address in the ELF file, so its prelinked bias is not
|
|
something we want to subtract out. */
|
|
info.dli_saddr = (void *) map->l_addr;
|
|
|
|
if (array[cnt] >= (void *) info.dli_saddr)
|
|
{
|
|
iov[last].iov_base = (void *) "+0x";
|
|
diff = array[cnt] - info.dli_saddr;
|
|
}
|
|
else
|
|
{
|
|
iov[last].iov_base = (void *) "-0x";
|
|
diff = info.dli_saddr - array[cnt];
|
|
}
|
|
iov[last].iov_len = 3;
|
|
++last;
|
|
|
|
iov[last].iov_base = _itoa_word ((unsigned long int) diff,
|
|
&buf2[WORD_WIDTH], 16, 0);
|
|
iov[last].iov_len = (&buf2[WORD_WIDTH]
|
|
- (char *) iov[last].iov_base);
|
|
++last;
|
|
|
|
iov[last].iov_base = (void *) ")";
|
|
iov[last].iov_len = 1;
|
|
++last;
|
|
}
|
|
}
|
|
|
|
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)
|
|
libc_hidden_def (__backtrace_symbols_fd)
|