abortfixup.c revision 1.9 
1/* $NetBSD: abortfixup.c,v 1.9 2011/05/18 19:44:18 mellon 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 1.9 2011/05/18 19:44:18 mellon Exp $");
36
37#include <setjmp.h>
38#include <signal.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <stdio.h>
42#include <err.h>
43
44jmp_buf buf;
45
46void
47sighandler(int sig)
48{
49
50	/* Catching SIGSEGV means the test passed. */
51	longjmp(buf, 1);
52}
53
54int
55main(void)
56{
57
58	if (signal(SIGSEGV, sighandler) == SIG_ERR)
59		err(1, "signal");
60
61	printf("ARM6/7 abort fixup panic\n");
62
63	/*
64 	 * issue an instruction that for certain generates a page
65	 * fault but _can't_ be fixed up by late abort fixup
66	 * routines due to its structure.
67	 */
68
69	if (setjmp(buf) == 0) {
70		__asm volatile (
71		"	mov r0, #0			\n"
72		"	mov r1, r0			\n"
73		"	str r1, [r0], r1, ror #10");
74
75		/* Should not be reached if OK */
76		printf("!!! Regression test FAILED - no SEGV recieved\n");
77		exit(1);
78	}
79
80	printf("ARM2/3 abort address panic\n");
81
82	/* Similar but pre-indexed, to check ARM2/3 abort address function. */
83
84	if (setjmp(buf) == 0) {
85		__asm volatile (
86		"	mov r0, #0			\n"
87		"	mov r1, r0			\n"
88		"	str r1, [r0, r1, ror #10]");
89
90		/* Should not be reached if OK */
91		printf("!!! Regression test FAILED - no SEGV recieved\n");
92		exit(1);
93	}
94
95	printf("All OK\n");
96
97	exit(0);
98};
99