1# $NetBSD: ubsan_common.subr,v 1.2 2022/06/12 08:55:36 skrll Exp $ 2# 3# Copyright (c) 2018, 2019 The NetBSD Foundation, Inc. 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25# POSSIBILITY OF SUCH DAMAGE. 26# 27 28test_target() 29{ 30 SUPPORT='n' 31 if ! echo __GNUC__ | cc -E - | grep -q __GNUC__; then 32 SUPPORT='y' 33 fi 34 35 if ! echo __clang__ | cc -E - | grep -q __clang__; then 36 SUPPORT='y' 37 fi 38} 39 40atf_test_case target_not_supported 41target_not_supported_head() 42{ 43 atf_set "descr" "Test forced skip" 44} 45 46target_not_supported_body() 47{ 48 atf_skip "Target is not supported" 49} 50 51# Add a new test case, with head & body. 52# asan_test_case <test-name> <description> <check-output> 53ubsan_test_case() { 54 atf_test_case "$1" 55 eval "$1_head() { 56 atf_set 'descr' 'Test Undefined Behavior for $2' 57 atf_set 'require.progs' 'cc' 58 }" 59 60 atf_test_case "$1_profile" 61 eval "$1_head() { 62 atf_set 'descr' 'Test Undefined Behavior for $2 with profiling option' 63 atf_set 'require.progs' 'cc' 64 }" 65 66 atf_test_case "$1_pic" 67 eval "$1_head() { 68 atf_set 'descr' 'Test Undefined Behavior for $2 with position independent code (PIC) flag' 69 atf_set 'require.progs' 'cc' 70 }" 71 72 atf_test_case "$1_pie" 73 eval "$1_head() { 74 atf_set 'descr' 'Test Undefined Behavior for $2 with position independent execution (PIE) flag' 75 atf_set 'require.progs' 'cc' 76 }" 77 78 atf_test_case "${1}32" 79 eval "$1_head() { 80 atf_set 'descr' 'Test Undefined Behavior for $2 in NetBSD_32 emulation' 81 atf_set 'require.progs' 'cc file diff cat' 82 }" 83 84 eval "$1_body() { 85 echo \"\$UBSAN_CODE\" > test.c 86 cc -fsanitize=undefined -o test test.c 87 # note: ignoring exit status due to inconsistency between gcc/clang 88 # (and between individual tests) 89 atf_check -s ignore -e match:'$3' ./test 90 } 91 92 $1_profile_body() { 93 echo \"\$UBSAN_CODE\" > test.c 94 cc -fsanitize=undefined -static -o test -pg test.c 95 atf_check -s ignore -e match:'$3' ./test 96 } 97 98 $1_pic_body() { 99 echo \"\$UBSAN_CODE\" > test.c 100 cc -DPIC_FOO -fsanitize=undefined -fPIC -shared -o libtest.so test.c 101 cc -DPIC_MAIN -o test test.c -fsanitize=undefined -L. -ltest 102 103 export LD_LIBRARY_PATH=. 104 atf_check -s ignore -e match:'$3' ./test 105 } 106 107 $1_pie_body() { 108 # check whether this arch supports -pice 109 if ! cc -pie -dM -E - < /dev/null 2>/dev/null >/dev/null; then 110 atf_set_skip 'cc -pie not supported on this architecture' 111 fi 112 echo \"\$UBSAN_CODE\" > test.c 113 cc -fsanitize=undefined -o test -fpie -pie test.c 114 atf_check -s ignore -e match:'$3' ./test 115 } 116 117 ${1}32_body() { 118 # check whether this arch is 64bit 119 if ! cc -dM -E - < /dev/null | fgrep -q _LP64; then 120 atf_skip 'this is not a 64 bit architecture' 121 fi 122 if ! cc -m32 -dM -E - < /dev/null 2>/dev/null > ./def32; then 123 atf_skip 'cc -m32 not supported on this architecture' 124 else 125 if fgrep -q _LP64 ./def32; then 126 atf_fail 'cc -m32 does not generate netbsd32 binaries' 127 fi 128 fi 129 130 echo \"\$UBSAN_CODE\" > test.c 131 cc -fsanitize=undefined -o df32 -m32 test.c 132 cc -fsanitize=undefined -o df64 test.c 133 file -b ./df32 > ./ftype32 134 file -b ./df64 > ./ftype64 135 if diff ./ftype32 ./ftype64 >/dev/null; then 136 atf_fail 'generated binaries do not differ' 137 fi 138 echo '32bit binaries on this platform are:' 139 cat ./ftype32 140 echo 'While native (64bit) binaries are:' 141 cat ./ftype64 142 atf_check -s ignore -e match:'$3' ./df32 143 144# and another test with profile 32bit binaries 145 cc -fsanitize=undefined -static -o test -pg -m32 test.c 146 atf_check -s ignore -e match:'$3' ./test 147 }" 148} 149 150ubsan_add_test_cases() { 151 test_target 152 test $SUPPORT = 'n' && { 153 atf_add_test_case target_not_supported 154 return 0 155 } 156 157 atf_add_test_case "$1" 158# atf_add_test_case "$1_profile" 159 atf_add_test_case "$1_pic" 160 atf_add_test_case "$1_pie" 161# atf_add_test_case "${1}32" 162} 163