1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2017 Konstantin Belousov <kib@FreeBSD.org> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Trigger a SIGSEGV/SIGBUS _not_ caused by an access to the unmapped page. 31 32uname -a | egrep -q "i386|amd64" || exit 0 33. ../default.cfg 34 35cat > /tmp/segnp.c <<EOF 36/* $Id: segnp.c,v 1.2 2017/08/12 10:23:28 kostik Exp kostik $ */ 37 38#include <stdio.h> 39 40int 41main(void) 42{ 43 44 __asm __volatile ("movw %w0,%%ds\n" : : "q" (0x1117) : "memory"); 45 printf("Huh ?\n"); 46} 47EOF 48mycc -o /tmp/segnp -Wall -Wextra -O2 /tmp/segnp.c || exit 1 49rm /tmp/segnp.c 50 51echo "expect: Bus error (core dumped)" 52(cd /tmp; /tmp/segnp) 53s=$? 54[ $s -ne 138 ] && { echo "Expected 138, got $s", exit 1; } 55 56rm /tmp/segnp /tmp/segnp.core 57exit 0 58