usr/src/usr.bin/lorder/lorder.sh

#!/bin/sh -
#
# Copyright (c) 1990 The Regents of the University of California.
# All rights reserved.
#
# Redistribution and use in source and binary forms are permitted
# provided that the above copyright notice and this paragraph are
# duplicated in all such forms and that any documentation,
# advertising materials, and other materials related to such
# distribution and use acknowledge that the software was developed
# by the University of California, Berkeley.  The name of the
# University may not be used to endorse or promote products derived
# from this software without specific prior written permission.
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
#       @(#)lorder.sh   5.2 (Berkeley) %G%
#
PATH=/bin:/usr/bin
export PATH

# only one argument is a special case, just output the name twice
case $# in
        0)
                echo "usage: lorder file ...";
                exit ;;
        1)
                echo $1 $1;
                exit ;;
esac

# temporary files
R=/tmp/_reference_$$
S=/tmp/_symbol_$$

# remove temporary files on HUP, INT, QUIT, PIPE, TERM
trap "rm -f $R $S; exit 1" 1 2 3 13 15

# if the line ends in a colon, assume it's the first occurrence of a new
# object file.  Echo it twice, just to make sure it gets into the output.
#
# if the line has " T " or " D " it's a globally defined symbol, put it
# into the symbol file.
#
# if the line has " U " it's a globally undefined symbol, put it into
# the reference file.
nm -go $* | sed "
        /:$/ {
                s/://
                s/.*/& &/
                p
                d
        }
        / [TD] / {
                s/:.* [TD]//
                w $S
                d
        }
        / U / {
                s/:.* U//
                w $R
        }
        d
"

# sort symbols and references on the first field (the symbol)
# join on that field, and print out the file names.
sort +1 $R -o $R
sort +1 $S -o $S
join -j 2 -o 1.1 2.1 $R $S
rm -f $R $S