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      1 #!/bin/sh -
      2 # $NetBSD: makelintstub,v 1.28 2024/01/20 14:52:49 christos Exp $
      3 #
      4 # Copyright (c) 1996, 1997 Christopher G. Demetriou
      5 # 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 for the
     18 #          NetBSD Project.  See http://www.NetBSD.org/ for
     19 #          information about NetBSD.
     20 # 4. The name of the author may not be used to endorse or promote products
     21 #    derived from this software without specific prior written permission.
     22 # 
     23 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33 # 
     34 # <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
     35 
     36 usage()
     37 {
     38 
     39 cat << _EOF 1>&2
     40 Usage: $PROG [-n|-p] [-o filename] [-s syscall.h] object ...
     41 	-n		Create SYSCALL_NOERROR.
     42 	-p		Create PSEUDO_NOERROR.
     43 			(also removes leading "_" on syscall name).
     44 	-o filename	Output to filename.
     45 	-s syscall.h	Header to #include instead of <sys/syscall.h>.
     46 
     47 	The CPP environment variable must be set
     48 	to the path to the C preprocessor.
     49 _EOF
     50 	exit 1
     51 }
     52 
     53 header()
     54 {
     55 
     56 	cat <<- __EOF__
     57 	/*
     58 	 * THIS IS AN AUTOMATICALLY GENERATED FILE.  DO NOT EDIT.
     59 	 * It is generated by $PROG
     60 	 */
     61 
     62 	#include <sys/param.h>
     63 	#include <sys/acl.h>
     64 	#include <sys/aio.h>
     65 	#include <sys/time.h>
     66 	#include <sys/mount.h>
     67 	#include <sys/stat.h>
     68 	#include <ufs/ufs/dinode.h>
     69 	#include <ufs/lfs/lfs.h>
     70 	#include <sys/resource.h>
     71 	#include <sys/poll.h>
     72 	#include <sys/uio.h>
     73 	#include <sys/ipc.h>
     74 	#include <sys/idtype.h>
     75 	#include <sys/lwpctl.h>
     76 	#include <sys/mqueue.h>
     77 	#include <sys/msg.h>
     78 	#include <sys/sem.h>
     79 	#include <sys/shm.h>
     80 	#include <sys/spawn.h>
     81 	#include <sys/sched.h>
     82 	#include <sys/timex.h>
     83 	#include <sys/socket.h>
     84 	#include <sys/event.h>
     85 	#include <sys/uuid.h>
     86 	#include <sys/quotactl.h>
     87 	#include <stdarg.h>
     88 	#include <unistd.h>
     89 	#include <stdlib.h>
     90 	#include <spawn.h>
     91 	#include <fcntl.h>
     92 
     93 	#include "extern.h"
     94 
     95 	__EOF__
     96 }
     97 
     98 syscall_stub()
     99 {
    100 
    101 	syscalldump="$1"
    102 	syscallname="$2"
    103 	funcname="$3"
    104 
    105     	arglist="$(
    106     	sed -e 'ta
    107 		:a
    108 		s,^/\* syscall: \"'"$syscallname"'\" ,,
    109 	        tb
    110 		d
    111 		:b
    112 		s, \*/$,,' $syscalldump
    113 	)"
    114 
    115 	eval set -f -- "$arglist"
    116 
    117 	if [ $# -lt 3 ]; then
    118 		echo syscall $syscallname not found! 1>&2
    119 		exit 1
    120 	fi
    121 
    122 	shift			# kill "ret:"
    123 	returntype=$1; shift
    124 	shift			# kill "args:"
    125 
    126 	cat <<- __EOF__
    127 	/*ARGSUSED*/
    128 	$returntype
    129 	__EOF__
    130 
    131 	# do ANSI C function header
    132 	echo	"#ifdef __STDC__"
    133 
    134 	echo "$funcname("
    135 	first=true; i=1
    136 	for arg; do
    137 		if $first; then
    138 			first=false
    139 		else
    140 			echo ", "
    141 		fi
    142 		case "$arg" in
    143 		"...") echo "...";;
    144 		*) echo "$arg arg$i"; i=$(($i + 1));;
    145 		esac
    146 	done
    147 	if $first; then
    148 		echo "void"
    149 	fi
    150 	echo	")"
    151 
    152 	# do K&R C function header
    153 	echo	"#else"
    154 
    155 	echo "$funcname("
    156 	first=true; i=1
    157 	for arg; do
    158 		if $first; then
    159 			first=false
    160 		else
    161 			echo ", "
    162 		fi
    163 		case "$arg" in
    164 		"...") echo "va_alist";;
    165 		*) echo "arg$i"; i=$(($i + 1));;
    166 		esac
    167 	done
    168 	echo	")"
    169 	i=1
    170 	for arg; do
    171 		case "$arg" in
    172 		"...") echo "	va_dcl";;
    173 		*) echo "	$arg arg$i;"; i=$(($i + 1));;
    174 		esac
    175 	done
    176 
    177 	# do function body
    178 	echo	"#endif"
    179 
    180 	echo	"{"
    181 	if [ "$returntype" != "void" ]; then
    182 		echo "        return (($returntype)0);"
    183 	fi
    184 	echo	"}"
    185 }
    186 
    187 trailer()
    188 {
    189 
    190 	cat <<- __EOF__
    191 	/* END */
    192 	__EOF__
    193 }
    194 
    195 
    196 pflag=false
    197 nflag=false
    198 oarg=""
    199 syscallhdr=/usr/include/sys/syscall.h
    200 syscalldump=/tmp/makelintstub.$$
    201 PROG="$(basename "$0")"
    202 
    203 if [ -z "${CPP}" ]; then
    204 	usage
    205 fi
    206 
    207 while getopts no:ps: i
    208 do
    209 	case "$i" in
    210 	n)	nflag=true;;
    211 	o)	oarg=$OPTARG;;
    212 	p)	pflag=true;;
    213 	s)	syscallhdr=$OPTARG;;
    214 	*)	usage;;
    215 	esac
    216 done
    217 
    218 shift $(expr $OPTIND - 1)
    219 
    220 if $pflag && $nflag
    221 then
    222 	echo "$PROG: -n flag and -p flag may not be used together" 1>&2
    223 	usage
    224 fi
    225 
    226 if [ -n "$oarg" ]; then
    227 	exec > $oarg
    228 fi
    229 
    230 trap "rm -f $syscalldump" 0 1 2 3 15
    231 
    232 header
    233 
    234 echo "#include \"$syscallhdr\"" | ${CPP} -D_LIBC -C > $syscalldump
    235 
    236 for syscall; do
    237 	fnname=${syscall%.S}
    238 	if $pflag; then
    239 		scname=${fnname#_}
    240 	else
    241 		scname=$fnname
    242 	fi
    243 	syscall_stub $syscalldump $scname $fnname
    244 	echo ""
    245 done
    246 
    247 trailer
    248 
    249 exit 0
    250