mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-29 10:17:38 +01:00
7e8c5066e8
(sighandler): Correct return type to "void". Delete unused variables buffer[] and n. (main): Cast sighandler to (sighandler_t). (Logical change 1.19)
87 lines
2 KiB
C
87 lines
2 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.
|
|
|
|
libunwind is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
libunwind 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 General Public License for more details. */
|
|
|
|
#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;
|
|
|
|
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_word_t proc_start, handler, lsda, bsp;
|
|
|
|
unw_get_reg (&cursor, UNW_REG_PROC_START, &proc_start);
|
|
unw_get_reg (&cursor, UNW_REG_HANDLER, &handler);
|
|
unw_get_reg (&cursor, UNW_REG_LSDA, &lsda);
|
|
unw_get_reg (&cursor, UNW_IA64_BSP, &bsp);
|
|
printf ("\tproc_start=%016lx handler=%lx lsda=%lx bsp=%lx\n",
|
|
proc_start, handler, lsda, bsp);
|
|
}
|
|
}
|
|
while (unw_step (&cursor) > 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;
|
|
}
|