xref: /titanic_52/usr/src/lib/efcode/engine/signal.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1999 by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <stdio.h>
30*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
31*7c478bd9Sstevel@tonic-gate #include <string.h>
32*7c478bd9Sstevel@tonic-gate #include <signal.h>
33*7c478bd9Sstevel@tonic-gate #include <unistd.h>
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate #include <sys/time.h>
36*7c478bd9Sstevel@tonic-gate #include <sys/termio.h>
37*7c478bd9Sstevel@tonic-gate 
38*7c478bd9Sstevel@tonic-gate #include <fcode/private.h>
39*7c478bd9Sstevel@tonic-gate #include <fcode/log.h>
40*7c478bd9Sstevel@tonic-gate 
41*7c478bd9Sstevel@tonic-gate static fcode_env_t *saved_envp;
42*7c478bd9Sstevel@tonic-gate static struct termio saved_termio;
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate static void
45*7c478bd9Sstevel@tonic-gate process_signal(int sig, siginfo_t *sip, void *addr)
46*7c478bd9Sstevel@tonic-gate {
47*7c478bd9Sstevel@tonic-gate 	/*
48*7c478bd9Sstevel@tonic-gate 	 * Format appropriate error message, want fault addr if Bus Error
49*7c478bd9Sstevel@tonic-gate 	 * or Segmentation Violation.
50*7c478bd9Sstevel@tonic-gate 	 */
51*7c478bd9Sstevel@tonic-gate 	switch (sig) {
52*7c478bd9Sstevel@tonic-gate 	case SIGSEGV:
53*7c478bd9Sstevel@tonic-gate 	case SIGBUS:
54*7c478bd9Sstevel@tonic-gate 	case SIGILL:
55*7c478bd9Sstevel@tonic-gate 	case SIGFPE:
56*7c478bd9Sstevel@tonic-gate 		forth_abort(saved_envp, "%s: Fault Addr: 0x%08x",
57*7c478bd9Sstevel@tonic-gate 		    strsignal(sig), sip->si_addr);
58*7c478bd9Sstevel@tonic-gate 
59*7c478bd9Sstevel@tonic-gate 	case SIGQUIT:
60*7c478bd9Sstevel@tonic-gate 		ioctl(fileno(stdin), TCSETA, &saved_termio);
61*7c478bd9Sstevel@tonic-gate 		log_message(MSG_FATAL, "SIGQUIT\n");
62*7c478bd9Sstevel@tonic-gate 		abort();
63*7c478bd9Sstevel@tonic-gate 
64*7c478bd9Sstevel@tonic-gate 	case SIGINT:
65*7c478bd9Sstevel@tonic-gate 		ioctl(fileno(stdin), TCSETA, &saved_termio);
66*7c478bd9Sstevel@tonic-gate 		break;
67*7c478bd9Sstevel@tonic-gate 	}
68*7c478bd9Sstevel@tonic-gate 	forth_abort(saved_envp, strsignal(sig));
69*7c478bd9Sstevel@tonic-gate }
70*7c478bd9Sstevel@tonic-gate 
71*7c478bd9Sstevel@tonic-gate void
72*7c478bd9Sstevel@tonic-gate install_handlers(fcode_env_t *env)
73*7c478bd9Sstevel@tonic-gate {
74*7c478bd9Sstevel@tonic-gate 	struct sigaction sa;
75*7c478bd9Sstevel@tonic-gate 
76*7c478bd9Sstevel@tonic-gate 	saved_envp = env;
77*7c478bd9Sstevel@tonic-gate 
78*7c478bd9Sstevel@tonic-gate 	ioctl(fileno(stdin), TCGETA, &saved_termio);
79*7c478bd9Sstevel@tonic-gate 
80*7c478bd9Sstevel@tonic-gate 	sigemptyset(&sa.sa_mask);
81*7c478bd9Sstevel@tonic-gate 	sa.sa_flags = SA_SIGINFO|SA_NODEFER;
82*7c478bd9Sstevel@tonic-gate 	sa.sa_handler = 0;
83*7c478bd9Sstevel@tonic-gate 	sa.sa_sigaction = process_signal;
84*7c478bd9Sstevel@tonic-gate 
85*7c478bd9Sstevel@tonic-gate 	sigaction(SIGINT, &sa, NULL);
86*7c478bd9Sstevel@tonic-gate 	sigaction(SIGQUIT, &sa, NULL);
87*7c478bd9Sstevel@tonic-gate 	sigaction(SIGSEGV, &sa, NULL);
88*7c478bd9Sstevel@tonic-gate 	sigaction(SIGBUS, &sa, NULL);
89*7c478bd9Sstevel@tonic-gate 	sigaction(SIGUSR1, &sa, NULL);
90*7c478bd9Sstevel@tonic-gate 	sigaction(SIGFPE, &sa, NULL);
91*7c478bd9Sstevel@tonic-gate }
92