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      1 #!/bin/sh -
      2 #	$NetBSD: lorder.sh,v 1.15 2007/01/14 16:29:35 apb Exp $
      3 #
      4 # Copyright (c) 1990, 1993
      5 #	The Regents of the University of California.  All rights reserved.
      6 #
      7 # Redistribution and use in source and binary forms, with or without
      8 # modification, are permitted provided that the following conditions
      9 # are met:
     10 # 1. Redistributions of source code must retain the above copyright
     11 #    notice, this list of conditions and the following disclaimer.
     12 # 2. Redistributions in binary form must reproduce the above copyright
     13 #    notice, this list of conditions and the following disclaimer in the
     14 #    documentation and/or other materials provided with the distribution.
     15 # 3. All advertising materials mentioning features or use of this software
     16 #    must display the following acknowledgement:
     17 #	This product includes software developed by the University of
     18 #	California, Berkeley and its contributors.
     19 # 4. Neither the name of the University nor the names of its contributors
     20 #    may be used to endorse or promote products derived from this software
     21 #    without specific prior written permission.
     22 #
     23 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26 # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33 # SUCH DAMAGE.
     34 #
     35 #	@(#)lorder.sh	8.1 (Berkeley) 6/6/93
     36 #
     37 
     38 # If the user has set ${NM} then we use it, otherwise we use 'nm'.
     39 # Similarly for JOIN, MKTEMP, SED, and SORT.
     40 #
     41 # For each of these, we try to find the command in the user's path, and
     42 # if that fails we try to find it in the default path.  If we can't
     43 # find it, we punt.  Once we find it, we canonicalize its name and set
     44 # the path to the default path so that other commands we use are picked
     45 # properly.
     46 
     47 : ${JOIN:=join}
     48 : ${MKTEMP:=mktemp}
     49 : ${NM:=nm}
     50 : ${SED:=sed}
     51 : ${SORT:=sort}
     52 for var in JOIN MKTEMP NM SED SORT ; do
     53 	if ! eval type "\$${var}" >/dev/null 2>&1 ; then
     54 		PATH=/bin:/usr/bin
     55 		export PATH
     56 		if ! eval type "\$${var}" > /dev/null 2>&1; then
     57 			eval echo "lorder: \$${var}: not found" >&2
     58 			exit 1
     59 		fi
     60 	fi
     61 	cmd='set $(eval type "\$${var}") ; eval echo \$$#'
     62 	eval "${var}=\$(eval \${cmd})"
     63 done
     64 
     65 # only one argument is a special case, just output the name twice
     66 case $# in
     67 	0)
     68 		echo "usage: lorder file ..." >&2;
     69 		exit ;;
     70 	1)
     71 		echo $1 $1;
     72 		exit ;;
     73 esac
     74 
     75 # temporary files
     76 N=$("${MKTEMP}" /tmp/_nm_.XXXXXX) || exit 1
     77 R=$("${MKTEMP}" /tmp/_reference_.XXXXXX) || exit 1
     78 S=$("${MKTEMP}" /tmp/_symbol_.XXXXXX) || exit 1
     79 
     80 # remove temporary files on exit
     81 trap "rm -f $N $R $S; exit 0" 0
     82 trap "rm -f $N $R $S; exit 1" HUP INT QUIT PIPE TERM 2>/dev/null || \
     83 	trap "rm -f $N $R $S; exit 1" 1 2 3 13 15
     84 
     85 # if the line ends in a colon, assume it's the first occurrence of a new
     86 # object file.  Echo it twice, just to make sure it gets into the output.
     87 #
     88 # if the line has " T " or " D " it's a globally defined symbol, put it
     89 # into the symbol file.
     90 #
     91 # if the line has " U " it's a globally undefined symbol, put it into
     92 # the reference file.
     93 (for file in $* ; do echo $file":" ; done ; $NM -go $*) >$N
     94 "${SED}" -ne '/:$/{s/://;s/.*/& &/;p;}' <$N
     95 "${SED}" -ne 's/:.* [TDGR] / /p' <$N >$S
     96 "${SED}" -ne 's/:.* U / /p' <$N >$R
     97 
     98 # sort symbols and references on the second field (the symbol)
     99 # join on that field, and print out the file names.
    100 "${SORT}" -k2 $R -o $R
    101 "${SORT}" -k2 $S -o $S
    102 "${JOIN}" -j 2 -o 1.1,2.1 $R $S
    103