1 /*
2 * Copyright (c) 1985 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <signal.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33 #include "atexit.h"
34
35 __LIBC_HIDDEN__ void (*__cleanup)();
36
37 #ifdef __arm__
__libc_android_abort()38 extern "C" __LIBC_HIDDEN__ void __libc_android_abort()
39 #else
40 void abort()
41 #endif
42 {
43 // Don't block SIGABRT to give any signal handler a chance; we ignore
44 // any errors -- X311J doesn't allow abort to return anyway.
45 sigset_t mask;
46 sigfillset(&mask);
47 sigdelset(&mask, SIGABRT);
48 sigprocmask(SIG_SETMASK, &mask, NULL);
49
50 // POSIX requires we flush stdio buffers on abort.
51 if (__cleanup) {
52 (*__cleanup)();
53 }
54
55 raise(SIGABRT);
56
57 // If SIGABRT ignored, or caught and the handler returns,
58 // remove the SIGABRT signal handler and raise SIGABRT again.
59 struct sigaction sa;
60 sa.sa_handler = SIG_DFL;
61 sa.sa_flags = SA_RESTART;
62 sigemptyset(&sa.sa_mask);
63 sigaction(SIGABRT, &sa, &sa);
64 sigprocmask(SIG_SETMASK, &mask, NULL);
65 raise(SIGABRT);
66 _exit(1);
67 }
68