From: Stephen Boyd stephen.boyd@linaro.org
If the kernel is configured to be built with debug symbols, or has bug tables, comparing files may not work if line numbers change. This makes comparing object files with these options harder to do. Let's strip out the debug info and drop the __bug_table here so that we don't see false positives. There may be other things to drop later, and it may be architecture specific, but this works for me with my ARM64 build.
[ Import Linux commit: 65ba6fa439e7c3cbf97de9dce9e7a3390ae2638c ]
Signed-off-by: Stephen Boyd stephen.boyd@linaro.org Reviewed-by: Jason Cooper jason@lakedaemon.net Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
scripts/objdiff | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/scripts/objdiff b/scripts/objdiff index 62e51dae2138..4fb5d6796893 100755 --- a/scripts/objdiff +++ b/scripts/objdiff @@ -57,13 +57,15 @@ get_output_dir() { do_objdump() { dir=$(get_output_dir $1) base=${1##*/} + stripped=$dir/${base%.o}.stripped dis=$dir/${base%.o}.dis
[ ! -d "$dir" ] && mkdir -p $dir
# remove addresses for a cleaner diff # http://dummdida.tumblr.com/post/60924060451/binary-diff-between-libc-from-sc... - $OBJDUMP -D $1 | sed "s/^[[:space:]]+[0-9a-f]+//" > $dis + $STRIP -g $1 -R __bug_table -R .note -R .comment -o $stripped + $OBJDUMP -D $stripped | sed -e "s/^[[:space:]]+[0-9a-f]+//" -e "s:^$stripped:$1:" > $dis }
dorecord() { @@ -73,6 +75,7 @@ dorecord() {
CMT="`git rev-parse --short HEAD`"
+ STRIP="${CROSS_COMPILE}strip" OBJDUMP="${CROSS_COMPILE}objdump"
for d in $FILES; do