makelintstub revision 1.3 
1#!/bin/sh -
2#	$NetBSD: makelintstub,v 1.3 1998/03/01 10:20:06 fvdl Exp $
3#
4# Copyright (c) 1996, 1997 Christopher G. Demetriou.  All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14# 3. All advertising materials mentioning features or use of this software
15#    must display the following acknowledgement:
16#      This product includes software developed for the NetBSD Project
17#      by Christopher G. Demetriou.
18# 4. The name of the author may not be used to endorse or promote products
19#    derived from this software without specific prior written permission
20#
21# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32usage()
33{
34
35	echo "usage: $0 [-n|-p] [-o filename] object ..."
36	exit 1
37}
38
39header()
40{
41
42	cat <<- __EOF__
43	/*
44	 * THIS IS AN AUTOMATICALLY GENERATED FILE.  DO NOT EDIT.
45	 */
46
47	#include <sys/param.h>
48	#include <sys/time.h>
49	#include <sys/mount.h>
50	#include <sys/stat.h>
51	#include <ufs/ufs/dinode.h>
52	#include <ufs/lfs/lfs.h>
53	#include <sys/resource.h>
54	#include <sys/poll.h>
55	#include <sys/uio.h>
56	#include <sys/ipc.h>
57	#include <sys/msg.h>
58	#include <sys/sem.h>
59	#include <sys/shm.h>
60	#include <sys/timex.h>
61	#include <sys/socket.h>
62	#ifdef __STDC__
63	#include <stdarg.h>
64	#else
65	#include <varargs.h>
66	#endif
67
68	__EOF__
69}
70
71syscall_stub()
72{
73
74	syscallhdr="$1"
75	syscallname="$2"
76	funcname="$3"
77
78	arglist="`printf '#include "'"$syscallhdr"'"' | cpp -C | \
79    	grep '^/\* syscall: "'"$syscallname"'" ' | \
80    	sed -e 's,^/\* syscall: ,,;s, \*/$,,'`"
81
82	eval set -f -- "$arglist"
83
84	if [ $# -lt 4 ]; then
85		echo syscall $syscallname not found! 1>&2
86		exit 1
87	fi
88
89	syscallname=$1
90	shift 2			# kill name and "ret:"
91	returntype=$1
92	shift 2			# kill return type and "args:"
93
94	cat <<- __EOF__
95	/*ARGSUSED*/
96	$returntype
97	__EOF__
98
99	if [ "`eval echo -n \\$$#`" = "..." ]; then
100		varargs=YES
101		nargs=$(($# - 1))
102	else
103		varargs=NO
104		nargs=$#
105	fi
106	nargswithva=$#
107
108	# do ANSI C function header
109	if [ $varargs = YES ]; then
110		echo	"#ifdef __STDC__"
111
112		echo -n	"$funcname("
113		i=1
114		while [ $i -le $nargs ]; do
115			eval echo -n \""\$$i"\"
116			echo -n	" arg$i"
117			if [ $i -lt $nargswithva ]; then
118				echo -n	", "
119			fi
120			i=$(($i + 1))
121		done
122		if [ $varargs = YES ]; then
123			echo -n "..."
124		fi
125		echo	")"
126
127		# do K&R C function header
128		echo	"#else"
129	fi
130
131	echo -n	"$funcname("
132	i=1
133	while [ $i -le $nargs ]; do
134		echo -n	"arg$i"
135		if [ $i -lt $nargswithva ]; then
136			echo -n	", "
137		fi
138		i=$(($i + 1))
139	done
140	if [ $varargs = YES ]; then
141		echo -n "va_alist"
142	fi
143	echo	")"
144	i=1
145	while [ $i -le $nargs ]; do
146		eval echo -n \""        \$$i"\"
147		echo	" arg$i;"
148		i=$(($i + 1))
149	done
150	if [ $varargs = YES ]; then
151		echo	"        va_dcl"
152	fi
153
154	# do function body
155	if [ $varargs = YES ]; then
156		echo	"#endif"
157	fi
158	echo	"{"
159	if [ "$returntype" != "void" ]; then
160		echo "        return (($returntype)0);"
161	fi
162	echo	"}"
163}
164
165trailer()
166{
167
168	cat <<- __EOF__
169	/* END */
170	__EOF__
171}
172
173set -- `getopt no:ps: $*`
174
175pflag=NO
176nflag=NO
177oarg=""
178syscallhdr=/usr/include/sys/syscall.h
179
180if test $? -ne 0; then
181	usage
182fi
183for i; do
184	case "$i" in
185	-n)	nflag=YES; shift;;
186	-o)	oarg=$2; shift; shift;;
187	-p)	pflag=YES; shift;;
188	-s)	syscallhdr=$2; shift; shift;;
189	--)	shift; break;;
190	esac
191done
192
193if [ $pflag = YES ] && [ $nflag = YES ]; then
194	echo "$0: -n flag and -p flag may not be used together"
195	echo ""
196	usage
197fi
198
199if [ "X$oarg" != "X" ]; then
200	exec > $oarg
201fi
202
203header
204for syscall; do
205	fnname=`echo $syscall | sed -e 's,\.o$,,'`
206	if [ $pflag = YES ]; then
207		scname=`echo $fnname | sed -e 's,^_,,'`
208	else
209		scname=$fnname
210	fi
211	syscall_stub $syscallhdr $scname $fnname
212	echo ""
213done
214trailer
215
216exit 0
217