mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
142 lines
3.6 KiB
Bash
142 lines
3.6 KiB
Bash
#!/bin/sh
|
|
|
|
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
#
|
|
# Copyright (c) 2000, Bruce Evans <bde@freebsd.org>
|
|
# Copyright (c) 2018, Jeff Roberson <jeff@freebsd.org>
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# $FreeBSD$
|
|
|
|
usage()
|
|
{
|
|
echo "usage: genoffset [-o outfile] objfile"
|
|
exit 1
|
|
}
|
|
|
|
|
|
work()
|
|
{
|
|
echo "#ifndef _OFFSET_INC_"
|
|
echo "#define _OFFSET_INC_"
|
|
echo "#if !defined(GENOFFSET) && (!defined(KLD_MODULE) || defined(KLD_TIED))"
|
|
${NM:='nm'} ${NMFLAGS} "$1" | ${AWK:='awk'} '
|
|
/ C .*_datatype_*/ {
|
|
type = substr($3, match($3, "_datatype_") + length("_datatype_"))
|
|
}
|
|
/ C .*_parenttype_*/ {
|
|
parent = substr($3, match($3, "_parenttype_") + length("_parenttype_"))
|
|
}
|
|
/ C .*sign$/ {
|
|
sign = substr($1, length($1) - 3, 4)
|
|
sub("^0*", "", sign)
|
|
if (sign != "")
|
|
sign = "-"
|
|
}
|
|
/ C .*w0$/ {
|
|
w0 = substr($1, length($1) - 3, 4)
|
|
}
|
|
/ C .*w1$/ {
|
|
w1 = substr($1, length($1) - 3, 4)
|
|
}
|
|
/ C .*w2$/ {
|
|
w2 = substr($1, length($1) - 3, 4)
|
|
}
|
|
/ C .*w3$/ {
|
|
w3 = substr($1, length($1) - 3, 4)
|
|
w = w3 w2 w1 w0
|
|
sub("^0*", "", w)
|
|
if (w == "")
|
|
w = "0"
|
|
hex = ""
|
|
if (w != "0")
|
|
hex = "0x"
|
|
sub("w3$", "", $3)
|
|
member = tolower($3)
|
|
# This still has minor problems representing INT_MIN, etc.
|
|
# E.g.,
|
|
# with 32-bit 2''s complement ints, this prints -0x80000000,
|
|
# which has the wrong type (unsigned int).
|
|
offset = sprintf("%s%s%s", sign, hex, w)
|
|
|
|
structures[parent] = sprintf("%s%s %s %s\n",
|
|
structures[parent], offset, type, member)
|
|
}
|
|
END {
|
|
for (struct in structures) {
|
|
printf("struct %s_lite {\n", struct);
|
|
n = split(structures[struct], members, "\n")
|
|
for (i = 1; i < n; i++) {
|
|
for (j = i + 1; j < n; j++) {
|
|
split(members[i], ivar, " ")
|
|
split(members[j], jvar, " ")
|
|
if (jvar[1] < ivar[1]) {
|
|
tmp = members[i]
|
|
members[i] = members[j]
|
|
members[j] = tmp
|
|
}
|
|
}
|
|
}
|
|
off = "0"
|
|
for (i = 1; i < n; i++) {
|
|
split(members[i], m, " ")
|
|
printf "\tu_char\tpad_%s[%s - %s];\n", m[3], m[1], off
|
|
printf "\t%s\t%s;\n", m[2], m[3]
|
|
off = sprintf("(%s + sizeof(%s))", m[1], m[2])
|
|
}
|
|
printf("};\n");
|
|
}
|
|
}
|
|
'
|
|
|
|
echo "#endif"
|
|
echo "#endif"
|
|
}
|
|
|
|
|
|
#
|
|
#MAIN PROGGRAM
|
|
#
|
|
use_outfile="no"
|
|
while getopts "o:" option
|
|
do
|
|
case "$option" in
|
|
o) outfile="$OPTARG"
|
|
use_outfile="yes";;
|
|
*) usage;;
|
|
esac
|
|
done
|
|
shift $(($OPTIND - 1))
|
|
case $# in
|
|
1) ;;
|
|
*) usage;;
|
|
esac
|
|
|
|
if [ "$use_outfile" = "yes" ]
|
|
then
|
|
work $1 3>"$outfile" >&3 3>&-
|
|
else
|
|
work $1
|
|
fi
|
|
|