regress/sys/arch/arm/abort-fixup/abortfixup.c

   1 /* $NetBSD: abortfixup.c,v 1.7 2005/12/24 21:22:46 perry Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  *
  29  * Trying out if an unhandled instruction pattern in the late abort fixup
  30  * generates a panic or sysfaults like it ought to do.
  31  */
  32
  33 #include <sys/types.h>
  34
  35 __RCSID("$NetBSD: abortfixup.c,v 1.7 2005/12/24 21:22:46 perry Exp $");
  36
  37 #include <setjmp.h>
  38 #include <signal.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <stdio.h>
  42
  43 jmp_buf buf;
  44
  45 void
  46 sighandler(int sig)
  47 {
  48
  49         /* Catching SIGSEGV means the test passed. */
  50         longjmp(buf, 1);
  51 }
  52
  53 int
  54 main(void)
  55 {
  56
  57         if (signal(SIGSEGV, sighandler) == SIG_ERR)
  58                 err(1, "signal");
  59
  60         printf("ARM6/7 abort fixup panic\n");
  61
  62         /*
  63          * issue an instruction that for certain generates a page
  64          * fault but _can't_ be fixed up by late abort fixup
  65          * routines due to its structure.
  66          */
  67
  68         if (setjmp(buf) == 0) {
  69                 __asm volatile (
  70                 "       mov r0, #0                      \n"
  71                 "       mov r1, r0                      \n"
  72                 "       str r1, [r0], r1, ror #10");
  73
  74                 /* Should not be reached if OK */
  75                 printf("!!! Regression test FAILED - no SEGV recieved\n");
  76                 exit(1);
  77         }
  78
  79         printf("ARM2/3 abort address panic\n");
  80
  81         /* Similar but pre-indexed, to check ARM2/3 abort address function. */
  82
  83         if (setjmp(buf) == 0) {
  84                 __asm volatile (
  85                 "       mov r0, #0                      \n"
  86                 "       mov r1, r0                      \n"
  87                 "       str r1, [r0, r1, ror #10]");
  88
  89                 /* Should not be reached if OK */
  90                 printf("!!! Regression test FAILED - no SEGV recieved\n");
  91                 exit(1);
  92         }
  93
  94         printf("All OK\n");
  95
  96         exit(0);
  97 };