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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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aedb37dc49
MFC after: 1 week Sponsored by: Klara, Inc. Reviewed by: allanjude Differential Revision: https://reviews.freebsd.org/D44155
111 lines
2.8 KiB
Bash
111 lines
2.8 KiB
Bash
#!/bin/sh -
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Copyright (c) 1990, 1993
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# The Regents of the University of California. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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export LC_CTYPE=C
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export LC_COLLATE=C
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set -e
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usage() {
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echo "usage: lorder file ..." >&2
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exit 1
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}
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while getopts "" opt ; do
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case $opt in
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*)
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usage
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;;
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esac
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done
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shift $(($OPTIND - 1))
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if [ $# -eq 0 ] ; then
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usage
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fi
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#
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# Create temporary files.
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#
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N=$(mktemp -t _nm_)
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R=$(mktemp -t _reference_)
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S=$(mktemp -t _symbol_)
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T=$(mktemp -t _temp_)
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NM=${NM:-nm}
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#
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# Remove temporary files on termination.
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#
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trap "rm -f $N $R $S $T" EXIT 1 2 3 13 15
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#
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# A line matching " [RTDW] " indicates that the input defines a symbol
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# with external linkage; put it in the symbol file.
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#
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# A line matching " U " indicates that the input references an
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# undefined symbol; put it in the reference file.
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#
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${NM} ${NMFLAGS} -go "$@" >$N
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sed -e "
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/ [RTDW] / {
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s/:.* [RTDW] / /
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w $S
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d
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}
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/ U / {
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s/:.* U / /
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w $R
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}
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d
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" <$N
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#
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# Elide entries representing a reference to a symbol from within the
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# library that defines it.
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#
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sort -u -o $S $S
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sort -u -o $R $R
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comm -23 $R $S >$T
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mv $T $R
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#
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# Make sure that all inputs get into the output.
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#
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for i ; do
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echo "$i" "$i"
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done
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#
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# Sort references and symbols on the second field (the symbol), join
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# on that field, and print out the file names.
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#
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sort -k 2 -o $R $R
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sort -k 2 -o $S $S
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join -j 2 -o 1.1 -o 2.1 $R $S
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