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-rwxr-xr-xtools/perf/tests/shell/buildid.sh158
1 files changed, 158 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/buildid.sh b/tools/perf/tests/shell/buildid.sh
new file mode 100755
index 000000000..f05670d1e
--- /dev/null
+++ b/tools/perf/tests/shell/buildid.sh
@@ -0,0 +1,158 @@
+#!/bin/sh
+# build id cache operations
+# SPDX-License-Identifier: GPL-2.0
+
+# skip if there's no readelf
+if ! [ -x "$(command -v readelf)" ]; then
+ echo "failed: no readelf, install binutils"
+ exit 2
+fi
+
+# skip if there's no compiler
+if ! [ -x "$(command -v cc)" ]; then
+ echo "failed: no compiler, install gcc"
+ exit 2
+fi
+
+# check what we need to test windows binaries
+add_pe=1
+run_pe=1
+if ! perf version --build-options | grep -q 'libbfd: .* on '; then
+ echo "WARNING: perf not built with libbfd. PE binaries will not be tested."
+ add_pe=0
+ run_pe=0
+fi
+if ! which wine > /dev/null; then
+ echo "WARNING: wine not found. PE binaries will not be run."
+ run_pe=0
+fi
+
+# set up wine
+if [ ${run_pe} -eq 1 ]; then
+ wineprefix=$(mktemp -d /tmp/perf.wineprefix.XXX)
+ export WINEPREFIX=${wineprefix}
+ # clear display variables to prevent wine from popping up dialogs
+ unset DISPLAY
+ unset WAYLAND_DISPLAY
+fi
+
+ex_md5=$(mktemp /tmp/perf.ex.MD5.XXX)
+ex_sha1=$(mktemp /tmp/perf.ex.SHA1.XXX)
+ex_pe=$(dirname $0)/../pe-file.exe
+
+echo 'int main(void) { return 0; }' | cc -Wl,--build-id=sha1 -o ${ex_sha1} -x c -
+echo 'int main(void) { return 0; }' | cc -Wl,--build-id=md5 -o ${ex_md5} -x c -
+
+echo "test binaries: ${ex_sha1} ${ex_md5} ${ex_pe}"
+
+check()
+{
+ case $1 in
+ *.exe)
+ # We don't have a tool that can pull a nicely formatted build-id out of
+ # a PE file, but we can extract the whole section with objcopy and
+ # format it ourselves. The .buildid section is a Debug Directory
+ # containing a CodeView entry:
+ # https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#debug-directory-image-only
+ # https://github.com/dotnet/runtime/blob/da94c022576a5c3bbc0e896f006565905eb137f9/docs/design/specs/PE-COFF.md
+ # The build-id starts at byte 33 and must be rearranged into a GUID.
+ id=`objcopy -O binary --only-section=.buildid $1 /dev/stdout | \
+ cut -c 33-48 | hexdump -ve '/1 "%02x"' | \
+ sed 's@^\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(.*\)0a$@\4\3\2\1\6\5\8\7\9@'`
+ ;;
+ *)
+ id=`readelf -n ${1} 2>/dev/null | grep 'Build ID' | awk '{print $3}'`
+ ;;
+ esac
+ echo "build id: ${id}"
+
+ link=${build_id_dir}/.build-id/${id:0:2}/${id:2}
+ echo "link: ${link}"
+
+ if [ ! -h $link ]; then
+ echo "failed: link ${link} does not exist"
+ exit 1
+ fi
+
+ file=${build_id_dir}/.build-id/${id:0:2}/`readlink ${link}`/elf
+ echo "file: ${file}"
+
+ if [ ! -x $file ]; then
+ echo "failed: file ${file} does not exist"
+ exit 1
+ fi
+
+ diff ${file} ${1}
+ if [ $? -ne 0 ]; then
+ echo "failed: ${file} do not match"
+ exit 1
+ fi
+
+ ${perf} buildid-cache -l | grep ${id}
+ if [ $? -ne 0 ]; then
+ echo "failed: ${id} is not reported by \"perf buildid-cache -l\""
+ exit 1
+ fi
+
+ echo "OK for ${1}"
+}
+
+test_add()
+{
+ build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
+ perf="perf --buildid-dir ${build_id_dir}"
+
+ ${perf} buildid-cache -v -a ${1}
+ if [ $? -ne 0 ]; then
+ echo "failed: add ${1} to build id cache"
+ exit 1
+ fi
+
+ check ${1}
+
+ rm -rf ${build_id_dir}
+}
+
+test_record()
+{
+ data=$(mktemp /tmp/perf.data.XXX)
+ build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
+ log=$(mktemp /tmp/perf.log.XXX)
+ perf="perf --buildid-dir ${build_id_dir}"
+
+ echo "running: perf record $@"
+ ${perf} record --buildid-all -o ${data} $@ &> ${log}
+ if [ $? -ne 0 ]; then
+ echo "failed: record $@"
+ echo "see log: ${log}"
+ exit 1
+ fi
+
+ check ${@: -1}
+
+ rm -f ${log}
+ rm -rf ${build_id_dir}
+ rm -rf ${data}
+}
+
+# add binaries manual via perf buildid-cache -a
+test_add ${ex_sha1}
+test_add ${ex_md5}
+if [ ${add_pe} -eq 1 ]; then
+ test_add ${ex_pe}
+fi
+
+# add binaries via perf record post processing
+test_record ${ex_sha1}
+test_record ${ex_md5}
+if [ ${run_pe} -eq 1 ]; then
+ test_record wine ${ex_pe}
+fi
+
+# cleanup
+rm ${ex_sha1} ${ex_md5}
+if [ ${run_pe} -eq 1 ]; then
+ rm -r ${wineprefix}
+fi
+
+exit ${err}