linux-imx

#!/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

​

SRCTREE=$(cd $(git rev-parse --show-toplevel 2>/dev/null); pwd)

​

if [ -z "$SRCTREE" ]; then

    echo >&2 "ERROR: Not a git repository."

    exit 1

fi

​

TMPD=$SRCTREE/.tmp_objdiff

​

usage() {

    echo >&2 "Usage: $0 <command> <args>"

    echo >&2 "  record    <list of object files or directories>"

    echo >&2 "  diff      <commitA> <commitB>"

    echo >&2 "  clean     all | <commit>"

    exit 1

}

​

get_output_dir() {

    dir=${1%/*}

​

    if [ "$dir" = "$1" ]; then

        dir=.

    fi

​

    dir=$(cd $dir; pwd)

​

    echo $TMPD/$CMT${dir#$SRCTREE}

}

​

do_objdump() {

    dir=$(get_output_dir $1)

    base=${1##*/}

    stripped=$dir/${base%.o}.stripped

    dis=$dir/${base%.o}.dis

​

    [ ! -d "$dir" ] && mkdir -p $dir