usr.bin/lorder/lorder.sh

   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