Quelle objdiff Sprache: Shell

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-only

# 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>
#

# 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 .objdiff/*)
# $ ./scripts/objdiff clean all
#
# Note: 'make mrproper' will also remove .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/.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

# remove addresses for a cleaner diff
# http://dummdida.tumblr.com/post/60924060451/binary-diff-between-libc-from-scientificlinux-and
$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() {
[ $# -eq 0 ] && usage

FILES="$*"

CMT="`git rev-parse --short HEAD`"

STRIP="${CROSS_COMPILE}strip"
OBJDUMP="${CROSS_COMPILE}objdump"

for d in $FILES; do
  if [ -d "$d" ]; then
   for f in $(find $d -name '*.o')
   do
    do_objdump $f
   done
  else
   do_objdump $d
  fi
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 >&2 "ERROR: $SRCD doesn't exist"
  exit 1
fi

if [ ! -d "$DSTD" ]; then
  echo >&2 "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 >&2 "$CMT not found"
  fi
fi
}

[ $# -eq 0 ] && usage

case "$1" in
record)
  shift
  dorecord $*
  ;;
diff)
  shift
  dodiff $*
  ;;
clean)
  shift
  doclean $*
  ;;
*)
  echo >&2 "Unrecognized command '$1'"
  exit 1
  ;;
esac

¤ Dauer der Verarbeitung: 0.18 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

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