mirror of
https://github.com/tobast/libunwind-eh_elf.git
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7e8c5066e8
(sighandler): Correct return type to "void". Delete unused variables buffer[] and n. (main): Cast sighandler to (sighandler_t). (Logical change 1.19)
88 lines
2 KiB
C
88 lines
2 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2002 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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libunwind is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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libunwind 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
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GNU General Public License for more details. */
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#include <execinfo.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <libunwind.h>
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#define panic(args...) \
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{ fprintf (stderr, args); exit (-1); }
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static void
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do_backtrace (void)
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{
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unw_cursor_t cursor;
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unw_word_t ip, sp;
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unw_context_t uc;
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unw_getcontext (&uc);
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if (unw_init_local (&cursor, &uc) < 0)
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panic ("unw_init_local failed!\n");
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do
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{
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unw_get_reg (&cursor, UNW_REG_IP, &ip);
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unw_get_reg (&cursor, UNW_REG_SP, &sp);
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printf ("ip=%016lx sp=%016lx\n", ip, sp);
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{
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unw_word_t proc_start, handler, lsda, bsp;
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unw_get_reg (&cursor, UNW_REG_PROC_START, &proc_start);
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unw_get_reg (&cursor, UNW_REG_HANDLER, &handler);
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unw_get_reg (&cursor, UNW_REG_LSDA, &lsda);
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unw_get_reg (&cursor, UNW_IA64_BSP, &bsp);
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printf ("\tproc_start=%016lx handler=%lx lsda=%lx bsp=%lx\n",
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proc_start, handler, lsda, bsp);
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}
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}
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while (unw_step (&cursor) > 0);
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}
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static void
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foo (void)
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{
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void *buffer[20];
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int i, n;
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do_backtrace ();
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n = backtrace (buffer, 20);
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for (i = 0; i < n; ++i)
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printf ("[%d] ip=%p\n", i, buffer[i]);
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}
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void
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sighandler (int signal, void *siginfo, struct sigcontext *sc)
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{
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printf ("sighandler: got signal %d @ %lx\n", signal, sc->sc_ip);
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do_backtrace();
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}
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int
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main (int argc, char **argv)
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{
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foo ();
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signal (SIGTERM, (sighandler_t) sighandler);
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kill (getpid (), SIGTERM);
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return 0;
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}
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