lib/libc/sys/makelintstub

   1 #!/bin/sh -
   2 # $NetBSD: makelintstub,v 1.23 2008/08/05 02:08:13 lukem 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          */
  60
  61         #include <sys/param.h>
  62         #include <sys/aio.h>
  63         #include <sys/time.h>
  64         #include <sys/mount.h>
  65         #include <sys/stat.h>
  66         #include <ufs/ufs/dinode.h>
  67         #include <ufs/lfs/lfs.h>
  68         #include <sys/resource.h>
  69         #include <sys/poll.h>
  70         #include <sys/uio.h>
  71         #include <sys/ipc.h>
  72         #include <sys/lwpctl.h>
  73         #include <sys/mqueue.h>
  74         #include <sys/msg.h>
  75         #include <sys/sem.h>
  76         #include <sys/shm.h>
  77         #include <sys/sched.h>
  78         #include <sys/timex.h>
  79         #include <sys/socket.h>
  80         #include <sys/event.h>
  81         #include <sys/uuid.h>
  82         #ifdef __STDC__
  83         #include <stdarg.h>
  84         #else
  85         #include <varargs.h>
  86         #endif
  87
  88         __EOF__
  89 }
  90
  91 syscall_stub()
  92 {
  93
  94         syscalldump="$1"
  95         syscallname="$2"
  96         funcname="$3"
  97
  98         arglist="$(
  99         sed -e 'ta
 100                 :a
 101                 s,^/\* syscall: \"'"$syscallname"'\" ,,
 102                 tb
 103                 d
 104                 :b
 105                 s, \*/$,,' $syscalldump
 106         )"
 107
 108         eval set -f -- "$arglist"
 109
 110         if [ $# -lt 3 ]; then
 111                 echo syscall $syscallname not found! 1>&2
 112                 exit 1
 113         fi
 114
 115         shift                   # kill "ret:"
 116         returntype=$1; shift
 117         shift                   # kill "args:"
 118
 119         cat <<- __EOF__
 120         /*ARGSUSED*/
 121         $returntype
 122         __EOF__
 123
 124         # do ANSI C function header
 125         echo    "#ifdef __STDC__"
 126
 127         echo "$funcname("
 128         first=true; i=1
 129         for arg; do
 130                 if $first; then
 131                         first=false
 132                 else
 133                         echo ", "
 134                 fi
 135                 case "$arg" in
 136                 "...") echo "...";;
 137                 *) echo "$arg arg$i"; i=$(($i + 1));;
 138                 esac
 139         done
 140         if $first; then
 141                 echo "void"
 142         fi
 143         echo    ")"
 144
 145         # do K&R C function header
 146         echo    "#else"
 147
 148         echo "$funcname("
 149         first=true; i=1
 150         for arg; do
 151                 if $first; then
 152                         first=false
 153                 else
 154                         echo ", "
 155                 fi
 156                 case "$arg" in
 157                 "...") echo "va_alist";;
 158                 *) echo "arg$i"; i=$(($i + 1));;
 159                 esac
 160         done
 161         echo    ")"
 162         i=1
 163         for arg; do
 164                 case "$arg" in
 165                 "...") echo "   va_dcl";;
 166                 *) echo "       $arg arg$i;"; i=$(($i + 1));;
 167                 esac
 168         done
 169
 170         # do function body
 171         echo    "#endif"
 172
 173         echo    "{"
 174         if [ "$returntype" != "void" ]; then
 175                 echo "        return (($returntype)0);"
 176         fi
 177         echo    "}"
 178 }
 179
 180 trailer()
 181 {
 182
 183         cat <<- __EOF__
 184         /* END */
 185         __EOF__
 186 }
 187
 188
 189 pflag=false
 190 nflag=false
 191 oarg=""
 192 syscallhdr=/usr/include/sys/syscall.h
 193 syscalldump=/tmp/makelintstub.$$
 194 PROG="$(basename "$0")"
 195
 196 if [ -z "${CPP}" ]; then
 197         usage
 198 fi
 199
 200 while getopts no:ps: i
 201 do
 202         case "$i" in
 203         n)      nflag=true;;
 204         o)      oarg=$OPTARG;;
 205         p)      pflag=true;;
 206         s)      syscallhdr=$OPTARG;;
 207         *)      usage;;
 208         esac
 209 done
 210
 211 shift $(expr $OPTIND - 1)
 212
 213 if $pflag && $nflag
 214 then
 215         echo "$PROG: -n flag and -p flag may not be used together" 1>&2
 216         usage
 217 fi
 218
 219 if [ -n "$oarg" ]; then
 220         exec > $oarg
 221 fi
 222
 223 trap "rm -f $syscalldump" 0 1 2 3 15
 224
 225 header
 226
 227 echo "#include \"$syscallhdr\"" | ${CPP} -D_LIBC -C > $syscalldump
 228
 229 for syscall; do
 230         fnname=${syscall%.S}
 231         if $pflag; then
 232                 scname=${fnname#_}
 233         else
 234                 scname=$fnname
 235         fi
 236         syscall_stub $syscalldump $scname $fnname
 237         echo ""
 238 done
 239
 240 trailer
 241
 242 exit 0