usr/src/lib/efcode/engine/signal.c

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