mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-24 12:13:42 +01:00
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2001-2002 Hewlett-Packard Co
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Copyright (c) 2002 Hewlett-Packard Co.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
#include <execinfo.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <libunwind.h>
|
|
|
|
#define panic(args...) \
|
|
{ fprintf (stderr, args); exit (-1); }
|
|
|
|
static void
|
|
do_backtrace (void)
|
|
{
|
|
unw_cursor_t cursor;
|
|
unw_word_t ip, sp;
|
|
unw_context_t uc;
|
|
int ret;
|
|
|
|
unw_getcontext (&uc);
|
|
if (unw_init_local (&cursor, &uc) < 0)
|
|
panic ("unw_init_local failed!\n");
|
|
|
|
do
|
|
{
|
|
unw_get_reg (&cursor, UNW_REG_IP, &ip);
|
|
unw_get_reg (&cursor, UNW_REG_SP, &sp);
|
|
printf ("ip=%016lx sp=%016lx\n", ip, sp);
|
|
|
|
{
|
|
unw_proc_info_t pi;
|
|
unw_word_t bsp;
|
|
|
|
unw_get_proc_info (&cursor, &pi);
|
|
unw_get_reg (&cursor, UNW_IA64_BSP, &bsp);
|
|
printf ("\tproc_start=%016lx handler=%lx lsda=%lx bsp=%lx\n",
|
|
pi.start_ip, pi.end_ip, pi.lsda, bsp);
|
|
}
|
|
ret = unw_step (&cursor);
|
|
if (ret < 0)
|
|
{
|
|
unw_get_reg (&cursor, UNW_REG_IP, &ip);
|
|
printf ("FAILURE: unw_step() returned %d for ip=%lx\n", ret, ip);
|
|
}
|
|
}
|
|
while (ret > 0);
|
|
}
|
|
|
|
static void
|
|
foo (void)
|
|
{
|
|
void *buffer[20];
|
|
int i, n;
|
|
|
|
do_backtrace ();
|
|
|
|
n = backtrace (buffer, 20);
|
|
for (i = 0; i < n; ++i)
|
|
printf ("[%d] ip=%p\n", i, buffer[i]);
|
|
}
|
|
|
|
void
|
|
sighandler (int signal, void *siginfo, struct sigcontext *sc)
|
|
{
|
|
printf ("sighandler: got signal %d @ %lx\n", signal, sc->sc_ip);
|
|
|
|
do_backtrace();
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
foo ();
|
|
|
|
signal (SIGTERM, (sighandler_t) sighandler);
|
|
kill (getpid (), SIGTERM);
|
|
return 0;
|
|
}
|