/* Copyright (C) 1991 Free Software Foundation, Inc.
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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The GNU C Library 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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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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Cambridge, MA 02139, USA. */
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/* Hacked up for uClibc by Erik Andersen */
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/* Hacked up for uClibc by Erik Andersen */
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#define _GNU_SOURCE
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#define _GNU_SOURCE
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#include <features.h>
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#include <features.h>
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#include <signal.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <signal.h>
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#include <signal.h>
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#include <errno.h>
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#include <errno.h>
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/* Our last ditch effort to commit suicide */
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/* Our last ditch effort to commit suicide */
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#if defined(__i386__)
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#if defined(__i386__)
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#define ABORT_INSTRUCTION asm ("hlt")
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#define ABORT_INSTRUCTION asm ("hlt")
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#elif defined(__ia64__)
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#elif defined(__ia64__)
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#define ABORT_INSTRUCTION asm ("break 0")
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#define ABORT_INSTRUCTION asm ("break 0")
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#elif defined(__mc68000__)
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#elif defined(__mc68000__)
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#define ABORT_INSTRUCTION asm (".long 0xffffffff")
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#define ABORT_INSTRUCTION asm (".long 0xffffffff")
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#elif defined(__mips__)
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#elif defined(__mips__)
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#define ABORT_INSTRUCTION asm ("break 255")
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#define ABORT_INSTRUCTION asm ("break 255")
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#elif defined(__s390__)
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#elif defined(__s390__)
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#define ABORT_INSTRUCTION asm (".word 0")
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#define ABORT_INSTRUCTION asm (".word 0")
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#elif defined(__sparc__)
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#elif defined(__sparc__)
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#define ABORT_INSTRUCTION asm ("unimp 0xf00")
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#define ABORT_INSTRUCTION asm ("unimp 0xf00")
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#elif defined(__x86_64__)
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#elif defined(__x86_64__)
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#define ABORT_INSTRUCTION asm ("hlt")
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#define ABORT_INSTRUCTION asm ("hlt")
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#else
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#else
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#define ABORT_INSTRUCTION
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#define ABORT_INSTRUCTION
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#endif
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#endif
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extern void weak_function _stdio_term(void);
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extern void weak_function _stdio_term(void);
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extern void _exit __P((int __status)) __attribute__ ((__noreturn__));
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extern void _exit __P((int __status)) __attribute__ ((__noreturn__));
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static int been_there_done_that = 0;
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static int been_there_done_that = 0;
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/* Be prepared in case multiple threads try to abort(). */
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/* Be prepared in case multiple threads try to abort(). */
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#ifdef __UCLIBC_HAS_THREADS__
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#ifdef __UCLIBC_HAS_THREADS__
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#include <pthread.h>
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#include <pthread.h>
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static pthread_mutex_t mylock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
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static pthread_mutex_t mylock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
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# define LOCK __pthread_mutex_lock(&mylock)
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# define LOCK __pthread_mutex_lock(&mylock)
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# define UNLOCK __pthread_mutex_unlock(&mylock);
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# define UNLOCK __pthread_mutex_unlock(&mylock);
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#else
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#else
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# define LOCK
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# define LOCK
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# define UNLOCK
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# define UNLOCK
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#endif
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#endif
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/* Cause an abnormal program termination with core-dump. */
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/* Cause an abnormal program termination with core-dump. */
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void abort(void)
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void abort(void)
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{
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{
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sigset_t sigset;
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sigset_t sigset;
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/* Make sure we acquire the lock before proceeding. */
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/* Make sure we acquire the lock before proceeding. */
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LOCK;
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LOCK;
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/* Unmask SIGABRT to be sure we can get it */
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/* Unmask SIGABRT to be sure we can get it */
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if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) {
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if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) {
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sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL);
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sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL);
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}
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}
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/* If we are using stdio, try to shut it down. At the very least,
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/* If we are using stdio, try to shut it down. At the very least,
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* this will attempt to commit all buffered writes. It may also
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* this will attempt to commit all buffered writes. It may also
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* unbuffer all writable files, or close them outright.
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* unbuffer all writable files, or close them outright.
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* Check the stdio routines for details. */
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* Check the stdio routines for details. */
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if (_stdio_term)
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if (_stdio_term)
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_stdio_term();
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_stdio_term();
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while (1) {
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while (1) {
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/* Try to suicide with a SIGABRT. */
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/* Try to suicide with a SIGABRT. */
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if (been_there_done_that == 0) {
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if (been_there_done_that == 0) {
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been_there_done_that++;
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been_there_done_that++;
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UNLOCK;
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UNLOCK;
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raise(SIGABRT);
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raise(SIGABRT);
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LOCK;
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LOCK;
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}
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}
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/* Still here? Try to remove any signal handlers. */
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/* Still here? Try to remove any signal handlers. */
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if (been_there_done_that == 1) {
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if (been_there_done_that == 1) {
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struct sigaction act;
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struct sigaction act;
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been_there_done_that++;
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been_there_done_that++;
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memset (&act, '\0', sizeof (struct sigaction));
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memset (&act, '\0', sizeof (struct sigaction));
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act.sa_handler = SIG_DFL;
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act.sa_handler = SIG_DFL;
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__sigfillset (&act.sa_mask);
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__sigfillset (&act.sa_mask);
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act.sa_flags = 0;
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act.sa_flags = 0;
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sigaction (SIGABRT, &act, NULL);
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sigaction (SIGABRT, &act, NULL);
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}
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}
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/* Still here? Try to suicide with an illegal instruction */
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/* Still here? Try to suicide with an illegal instruction */
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if (been_there_done_that == 2) {
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if (been_there_done_that == 2) {
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been_there_done_that++;
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been_there_done_that++;
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ABORT_INSTRUCTION;
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ABORT_INSTRUCTION;
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}
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}
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/* Still here? Try to at least exit */
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/* Still here? Try to at least exit */
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if (been_there_done_that == 3) {
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if (been_there_done_that == 3) {
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been_there_done_that++;
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been_there_done_that++;
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_exit (127);
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_exit (127);
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}
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}
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/* Still here? We're screwed. Sleepy time. Good night */
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/* Still here? We're screwed. Sleepy time. Good night */
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while (1)
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while (1)
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/* Try for ever and ever. */
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/* Try for ever and ever. */
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ABORT_INSTRUCTION;
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ABORT_INSTRUCTION;
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}
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}
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}
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}
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