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 if [ ! -x $file ]; then 81 echo "failed: file ${file} does not exist" 82 exit 1 83 fi 84 85 diff ${file} ${1} 86 if [ $? -ne 0 ]; then 87 echo "failed: ${file} do not match" 88 exit 1 89 fi 90 91 ${perf} buildid-cache -l | grep ${id} 92 if [ $? -ne 0 ]; then 93 echo "failed: ${id} is not reported by \"perf buildid-cache -l\"" 94 exit 1 95 fi 96 97 echo "OK for ${1}" 98} 99 100test_add() 101{ 102 build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) 103 perf="perf --buildid-dir ${build_id_dir}" 104 105 ${perf} buildid-cache -v -a ${1} 106 if [ $? -ne 0 ]; then 107 echo "failed: add ${1} to build id cache" 108 exit 1 109 fi 110 111 check ${1} 112 113 rm -rf ${build_id_dir} 114} 115 116test_record() 117{ 118 data=$(mktemp /tmp/perf.data.XXX) 119 build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) 120 log=$(mktemp /tmp/perf.log.XXX) 121 perf="perf --buildid-dir ${build_id_dir}" 122 123 echo "running: perf record $@" 124 ${perf} record --buildid-all -o ${data} $@ &> ${log} 125 if [ $? -ne 0 ]; then 126 echo "failed: record $@" 127 echo "see log: ${log}" 128 exit 1 129 fi 130 131 check ${@: -1} 132 133 rm -f ${log} 134 rm -rf ${build_id_dir} 135 rm -rf ${data} 136} 137 138# add binaries manual via perf buildid-cache -a 139test_add ${ex_sha1} 140test_add ${ex_md5} 141if [ ${add_pe} -eq 1 ]; then 142 test_add ${ex_pe} 143fi 144 145# add binaries via perf record post processing 146test_record ${ex_sha1} 147test_record ${ex_md5} 148if [ ${run_pe} -eq 1 ]; then 149 test_record wine ${ex_pe} 150fi 151 152# cleanup 153rm ${ex_sha1} ${ex_md5} 154if [ ${run_pe} -eq 1 ]; then 155 rm -r ${wineprefix} 156fi 157 158exit ${err} 159