#!/bin/bash+
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#+
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# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.+
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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#+
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# This code is free software; you can redistribute it and/or modify it+
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# under the terms of the GNU General Public License version 2 only, as+
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# published by the Free Software Foundation.+
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#+
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# This code is distributed in the hope that it will be useful, but WITHOUT+
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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# version 2 for more details (a copy is included in the LICENSE file that+
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# accompanied this code).+
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#+
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# You should have received a copy of the GNU General Public License version+
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# 2 along with this work; if not, write to the Free Software Foundation,+
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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#+
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
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# or visit www.oracle.com if you need additional information or have any+
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# questions.+
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#+
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+
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# MANUAL+
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#+
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# ./common/bin/compare-objects.sh old_jdk_build_dir new_jdk_build_dir+
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#+
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# Compares object files+
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#+
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+
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if [ "x$1" = "x-h" ] || [ "x$1" = "x--help" ] || [ "x$1" == "x" ]; then+
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    echo "bash ./common/bin/compare-objects.sh old_jdk_build_dir new_jdk_build_dir <pattern>"+
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    echo ""+
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    echo "Compare object files"+
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    echo ""+
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    exit 10+
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fi+
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+
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#######+
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#+
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# List of files (grep patterns) that are ignored+
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# +
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# 1) hotspot object files+
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IGNORE="-e hotspot"+
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+
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# 2) various build artifacts: sizer.32.o sizer.64.o dummyodbc.o+
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#    these are produced during build and then e.g run to produce other data+
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#    i.e not directly put into build => safe to ignore+
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IGNORE="${IGNORE} -e sizer.32.o -e sizer.64.o"+
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IGNORE="${IGNORE} -e dummyodbc.o"+
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IGNORE="${IGNORE} -e genSolarisConstants.o"+
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IGNORE="${IGNORE} -e genUnixConstants.o"+
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+
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OLD="$1"+
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NEW="$2"+
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shift; shift+
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PATTERN="$*"+
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+
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if [ -f $NEW/spec.sh ]; then+
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    . $NEW/spec.sh+
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elif [ -f $NEW/../../spec.sh ]; then+
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    . $NEW/../../spec.sh+
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elif [ -f $OLD/spec.sh ]; then+
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    . $OLD/spec.sh+
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elif [ -f $OLD/../../spec.sh ]; then+
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    . $OLD/../../spec.sh+
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else+
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    echo "Unable to find spec.sh"+
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    echo "Giving up"+
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    exit 1+
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fi+
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+
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export COMPARE_ROOT=/tmp/cimages.$USER/objects+
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mkdir -p $COMPARE_ROOT+
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+
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(${CD} $OLD && ${FIND} . -name '*.o') > $COMPARE_ROOT/list.old+
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(${CD} $NEW && ${FIND} . -name '*.o') > $COMPARE_ROOT/list.new+
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+
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# On macosx JobjC is build in both i386 and x86_64 variant (universial binary)+
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#   but new build only builds the x86_64+
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# Remove the 386 variants from comparison...to avoid "false" positives+
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${GREP} -v 'JObjC.dst/Objects-normal/i386' $COMPARE_ROOT/list.old > $COMPARE_ROOT/list.old.new+
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${CP} $COMPARE_ROOT/list.old $COMPARE_ROOT/list.old.full+
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${CP} $COMPARE_ROOT/list.old.new $COMPARE_ROOT/list.old+
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+
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findnew() {+
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    arg_1=$1+
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    arg_2=$2+
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+
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    # special case 1 unpack-cmd => unpackexe+
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    arg_1=`${ECHO} $arg_1 | ${SED} 's!unpack-cmd!unpackexe!g'`+
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    arg_2=`${ECHO} $arg_2 | ${SED} 's!unpack-cmd!unpackexe!g'`+
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+
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    # special case 2 /JObjC.dst/ => /libjobjc/+
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    arg_1=`${ECHO} $arg_1 | ${SED} 's!/JObjC.dst/!/libjobjc/!g'`+
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    arg_2=`${ECHO} $arg_2 | ${SED} 's!/JObjC.dst/!/libjobjc/!g'`+
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+
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    full=`${ECHO} $arg_1 | ${SED} 's!\.!\\\.!g'`+
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    medium=`${ECHO} $arg_1 | ${SED} 's!.*/\([^/]*/[^/]*\)!\1!'`+
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    short=`${ECHO} $arg_2 | ${SED} 's!\.!\\\.!g'`+
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    if [ "`${GREP} -c "/$full" $COMPARE_ROOT/list.new`" -eq 1 ]+
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    then+
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	${ECHO} $NEW/$arg_1+
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	return+
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    fi+
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+
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    if [ "`${GREP} -c "$medium" $COMPARE_ROOT/list.new`" -eq 1 ]+
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    then+
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	${GREP} "$medium" $COMPARE_ROOT/list.new+
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	return+
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    fi+
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+
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    if [ "`${GREP} -c "/$short" $COMPARE_ROOT/list.new`" -eq 1 ]+
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    then+
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	${GREP} "/$short" $COMPARE_ROOT/list.new+
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	return+
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    fi+
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+
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    # old style has "dir" before obj{64}+
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    dir=`${ECHO} $arg_1 | ${SED} 's!.*/\([^/]*\)/obj[64]*.*!\1!g'`+
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    if [ -n "$dir" -a "$dir" != "$arg_1" ]+
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    then+
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	if [ "`${GREP} $dir $COMPARE_ROOT/list.new | ${GREP} -c "/$short"`" -eq 1 ]+
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	then+
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	    ${GREP} $dir $COMPARE_ROOT/list.new | ${GREP} "/$short"+
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	    return+
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	fi+
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+
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	# Try with lib$dir/+
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	if [ "`${GREP} "lib$dir/" $COMPARE_ROOT/list.new | ${GREP} -c "/$short"`" -eq 1 ]+
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	then+
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	    ${GREP} "lib$dir/" $COMPARE_ROOT/list.new | ${GREP} "/$short"+
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	    return+
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	fi+
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+
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	# Try with $dir_objs+
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	if [ "`${GREP} "${dir}_objs" $COMPARE_ROOT/list.new | ${GREP} -c "/$short"`" -eq 1 ]+
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	then+
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	    ${GREP} "${dir}_objs" $COMPARE_ROOT/list.new | ${GREP} "/$short"+
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	    return+
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	fi+
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    fi+
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+
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    # check for some specifics...+
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    for i in demo hotspot jobjc+
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    do+
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	if [ "`${ECHO} $full | ${GREP} -c $i`" -gt 0 ]+
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	then+
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	    if [ "`${GREP} $i $COMPARE_ROOT/list.new | ${GREP} -c "/$short"`" -eq 1 ]+
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	    then+
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		${GREP} $i $COMPARE_ROOT/list.new | ${GREP} "/$short"+
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		return+
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	    fi+
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	fi+
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    done+
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+
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    # check for specific demo+
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    demo=`${ECHO} $arg_1 | ${SED} 's!.*/demo/jvmti/\([^/]*\)/.*!\1!g'`+
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    if [ -n "$demo" -a "$dir" != "$demo" ]+
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    then+
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	if [ "`${GREP} $demo $COMPARE_ROOT/list.new | ${GREP} -c "/$short"`" -eq 1 ]+
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	then+
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	    ${GREP} $demo $COMPARE_ROOT/list.new | ${GREP} "/$short"+
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	    return+
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	fi+
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    fi+
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+
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    return+
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}+
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+
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compare() {+
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    old=$1+
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    new=$2+
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    ${DIFF} $old $new > /dev/null+
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    res=$?+
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    if [ $res -eq 0 ]+
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    then+
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	${ECHO} 0+
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	return+
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    fi+
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+
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    # check if stripped objects gives equality+
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    ${CP} $old $COMPARE_ROOT/`basename $old`.old+
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    ${CP} $new $COMPARE_ROOT/`basename $old`.new+
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    ${POST_STRIP_CMD} $COMPARE_ROOT/`basename $old`.old $COMPARE_ROOT/`basename $old`.new > /dev/null 2>&1+
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    ${DIFF} $COMPARE_ROOT/`basename $old`.old $COMPARE_ROOT/`basename $old`.new > /dev/null+
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    res=$?+
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    ${RM} $COMPARE_ROOT/`basename $old`.old $COMPARE_ROOT/`basename $old`.new+
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    if [ $res -eq 0 ]+
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    then+
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	${ECHO} S+
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	return+
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    fi+
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+
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    name=`basename $1 | ${SED} 's!\.o!!'`+
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    cntold=`strings $old | ${GREP} -c $name`+
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    cntnew=`strings $new | ${GREP} -c $name`+
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    +
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    if [ $cntold -gt 0 -a $cntnew -gt 0 ]+
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    then+
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	${ECHO} F+
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	return+
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    fi+
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+
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    ${ECHO} 1+
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}+
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+
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for F in `${CAT} $COMPARE_ROOT/list.old`+
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do+
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    if [ "${IGNORE}" ] && [ "`${ECHO} $F | ${GREP} ${IGNORE}`" ]+
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    then+
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	#+
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	# skip ignored files+
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        #+
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	continue;+
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    fi+
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+
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    if [ "$PATTERN" ] && [ `${ECHO} $F | ${GREP} -c $PATTERN` -eq 0 ]+
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    then+
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	continue;+
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    fi+
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+
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    f=`basename $F`+
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    o=$OLD/$F+
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    n=`findnew $F $f`+
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+
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    if [ "$n" ]+
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    then	+
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	n="$NEW/$n"+
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	${ECHO} `compare $o $n` : $f : $o : $n+
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    else+
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	${ECHO} "- : $f : $o "+
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    fi+
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done+
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