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author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-05-09 10:47:05 +0200 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-05-09 11:50:14 +0200 |
commit | d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19 (patch) | |
tree | d71aae6d706d1f3b01da5f944e247abe308feea0 /scripts/objdiff | |
parent | 7904b70885f3c589c239f6ac978f299a6744557f (diff) | |
parent | 173d294b94cfec10063a5be40934d6d8fb7981ce (diff) | |
download | u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.zip u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.tar.gz u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.tar.bz2 |
Merge branch 'u-boot/master'
Conflicts:
drivers/net/Makefile
(trivial merge)
Diffstat (limited to 'scripts/objdiff')
-rwxr-xr-x | scripts/objdiff | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/scripts/objdiff b/scripts/objdiff new file mode 100755 index 0000000..b3e4f10 --- /dev/null +++ b/scripts/objdiff @@ -0,0 +1,141 @@ +#!/bin/bash + +# objdiff - a small script for validating that a commit or series of commits +# didn't change object code. +# +# Copyright 2014, Jason Cooper <jason@lakedaemon.net> +# +# Licensed under the terms of the GNU GPL version 2 + +# usage example: +# +# $ git checkout COMMIT_A +# $ <your fancy build command here> +# $ ./scripts/objdiff record path/to/*.o +# +# $ git checkout COMMIT_B +# $ <your fancy build command here> +# $ ./scripts/objdiff record path/to/*.o +# +# $ ./scripts/objdiff diff COMMIT_A COMMIT_B +# $ + +# And to clean up (everything is in .tmp_objdiff/*) +# $ ./scripts/objdiff clean all +# +# Note: 'make mrproper' will also remove .tmp_objdiff + +GIT_DIR="`git rev-parse --git-dir`" + +if [ -d "$GIT_DIR" ]; then + TMPD="${GIT_DIR%git}tmp_objdiff" + + [ -d "$TMPD" ] || mkdir "$TMPD" +else + echo "ERROR: git directory not found." + exit 1 +fi + +usage() { + echo "Usage: $0 <command> <args>" + echo " record <list of object files>" + echo " diff <commitA> <commitB>" + echo " clean all | <commit>" + exit 1 +} + +dorecord() { + [ $# -eq 0 ] && usage + + FILES="$*" + + CMT="`git rev-parse --short HEAD`" + + OBJDUMP="${CROSS_COMPILE}objdump" + OBJDIFFD="$TMPD/$CMT" + + [ ! -d "$OBJDIFFD" ] && mkdir -p "$OBJDIFFD" + + for f in $FILES; do + dn="${f%/*}" + bn="${f##*/}" + + [ ! -d "$OBJDIFFD/$dn" ] && mkdir -p "$OBJDIFFD/$dn" + + # remove addresses for a more clear diff + # http://dummdida.tumblr.com/post/60924060451/binary-diff-between-libc-from-scientificlinux-and + $OBJDUMP -D "$f" | sed "s/^[[:space:]]\+[0-9a-f]\+//" \ + >"$OBJDIFFD/$dn/$bn" + done +} + +dodiff() { + [ $# -ne 2 ] && [ $# -ne 0 ] && usage + + if [ $# -eq 0 ]; then + SRC="`git rev-parse --short HEAD^`" + DST="`git rev-parse --short HEAD`" + else + SRC="`git rev-parse --short $1`" + DST="`git rev-parse --short $2`" + fi + + DIFF="`which colordiff`" + + if [ ${#DIFF} -eq 0 ] || [ ! -x "$DIFF" ]; then + DIFF="`which diff`" + fi + + SRCD="$TMPD/$SRC" + DSTD="$TMPD/$DST" + + if [ ! -d "$SRCD" ]; then + echo "ERROR: $SRCD doesn't exist" + exit 1 + fi + + if [ ! -d "$DSTD" ]; then + echo "ERROR: $DSTD doesn't exist" + exit 1 + fi + + $DIFF -Nurd $SRCD $DSTD +} + +doclean() { + [ $# -eq 0 ] && usage + [ $# -gt 1 ] && usage + + if [ "x$1" = "xall" ]; then + rm -rf $TMPD/* + else + CMT="`git rev-parse --short $1`" + + if [ -d "$TMPD/$CMT" ]; then + rm -rf $TMPD/$CMT + else + echo "$CMT not found" + fi + fi +} + +[ $# -eq 0 ] && usage + +case "$1" in + record) + shift + dorecord $* + ;; + diff) + shift + dodiff $* + ;; + clean) + shift + doclean $* + ;; + *) + echo "Unrecognized command '$1'" + exit 1 + ;; +esac |