1#!/bin/sh 2# build id cache operations 3# SPDX-License-Identifier: GPL-2.0 4 5# skip if there's no readelf 6if ! [ -x "$(command -v readelf)" ]; then 7 echo "failed: no readelf, install binutils" 8 exit 2 9fi 10 11# skip if there's no compiler 12if ! [ -x "$(command -v cc)" ]; then 13 echo "failed: no compiler, install gcc" 14 exit 2 15fi 16 17# check what we need to test windows binaries 18add_pe=1 19run_pe=1 20if ! perf version --build-options | grep -q 'libbfd: .* on '; then 21 echo "WARNING: perf not built with libbfd. PE binaries will not be tested." 22 add_pe=0 23 run_pe=0 24fi 25if ! which wine > /dev/null; then 26 echo "WARNING: wine not found. PE binaries will not be run." 27 run_pe=0 28fi 29 30# set up wine 31if [ ${run_pe} -eq 1 ]; then 32 wineprefix=$(mktemp -d /tmp/perf.wineprefix.XXX) 33 export WINEPREFIX=${wineprefix} 34 # clear display variables to prevent wine from popping up dialogs 35 unset DISPLAY 36 unset WAYLAND_DISPLAY 37fi 38 39ex_md5=$(mktemp /tmp/perf.ex.MD5.XXX) 40ex_sha1=$(mktemp /tmp/perf.ex.SHA1.XXX) 41ex_pe=$(dirname $0)/../pe-file.exe 42 43echo 'int main(void) { return 0; }' | cc -Wl,--build-id=sha1 -o ${ex_sha1} -x c - 44echo 'int main(void) { return 0; }' | cc -Wl,--build-id=md5 -o ${ex_md5} -x c - 45 46echo "test binaries: ${ex_sha1} ${ex_md5} ${ex_pe}" 47 48check() 49{ 50 case $1 in 51 *.exe) 52 # We don't have a tool that can pull a nicely formatted build-id out of 53 # a PE file, but we can extract the whole section with objcopy and 54 # format it ourselves. The .buildid section is a Debug Directory 55 # containing a CodeView entry: 56 # https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#debug-directory-image-only 57 # https://github.com/dotnet/runtime/blob/da94c022576a5c3bbc0e896f006565905eb137f9/docs/design/specs/PE-COFF.md 58 # The build-id starts at byte 33 and must be rearranged into a GUID. 59 id=`objcopy -O binary --only-section=.buildid $1 /dev/stdout | \ 60 cut -c 33-48 | hexdump -ve '/1 "%02x"' | \ 61 sed 's@^\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(.*\)0a$@\4\3\2\1\6\5\8\7\9@'` 62 ;; 63 *) 64 id=`readelf -n ${1} 2>/dev/null | grep 'Build ID' | awk '{print $3}'` 65 ;; 66 esac 67 echo "build id: ${id}" 68 69 link=${build_id_dir}/.build-id/${id:0:2}/${id:2} 70 echo "link: ${link}" 71 72 if [ ! -h $link ]; then 73 echo "failed: link ${link} does not exist" 74 exit 1 75 fi 76 77 file=${build_id_dir}/.build-id/${id:0:2}/`readlink ${link}`/elf 78 echo "file: ${file}" 79 80 # Check for file permission of original file 81 # in case of pe-file.exe file 82 echo $1 | grep ".exe" 83 if [ $? -eq 0 ]; then 84 if [ -x $1 -a ! -x $file ]; then 85 echo "failed: file ${file} executable does not exist" 86 exit 1 87 fi 88 89 if [ ! -x $file -a ! -e $file ]; then 90 echo "failed: file ${file} does not exist" 91 exit 1 92 fi 93 elif [ ! -x $file ]; then 94 echo "failed: file ${file} does not exist" 95 exit 1 96 fi 97 98 diff ${file} ${1} 99 if [ $? -ne 0 ]; then 100 echo "failed: ${file} do not match" 101 exit 1 102 fi 103 104 ${perf} buildid-cache -l | grep ${id} 105 if [ $? -ne 0 ]; then 106 echo "failed: ${id} is not reported by \"perf buildid-cache -l\"" 107 exit 1 108 fi 109 110 echo "OK for ${1}" 111} 112 113test_add() 114{ 115 build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) 116 perf="perf --buildid-dir ${build_id_dir}" 117 118 ${perf} buildid-cache -v -a ${1} 119 if [ $? -ne 0 ]; then 120 echo "failed: add ${1} to build id cache" 121 exit 1 122 fi 123 124 check ${1} 125 126 rm -rf ${build_id_dir} 127} 128 129test_record() 130{ 131 data=$(mktemp /tmp/perf.data.XXX) 132 build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) 133 log=$(mktemp /tmp/perf.log.XXX) 134 perf="perf --buildid-dir ${build_id_dir}" 135 136 echo "running: perf record $@" 137 ${perf} record --buildid-all -o ${data} $@ &> ${log} 138 if [ $? -ne 0 ]; then 139 echo "failed: record $@" 140 echo "see log: ${log}" 141 exit 1 142 fi 143 144 check ${@: -1} 145 146 rm -f ${log} 147 rm -rf ${build_id_dir} 148 rm -rf ${data} 149} 150 151# add binaries manual via perf buildid-cache -a 152test_add ${ex_sha1} 153test_add ${ex_md5} 154if [ ${add_pe} -eq 1 ]; then 155 test_add ${ex_pe} 156fi 157 158# add binaries via perf record post processing 159test_record ${ex_sha1} 160test_record ${ex_md5} 161if [ ${run_pe} -eq 1 ]; then 162 test_record wine ${ex_pe} 163fi 164 165# cleanup 166rm ${ex_sha1} ${ex_md5} 167if [ ${run_pe} -eq 1 ]; then 168 rm -r ${wineprefix} 169fi 170 171exit ${err} 172