sys/kern/makesyscalls.sh

   1 #! /bin/sh -
   2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
   3 # $FreeBSD: src/sys/kern/makesyscalls.sh,v 1.39.2.4 2001/10/20 09:01:24 marcel Exp $
   4
   5 set -e
   6
   7 # output files:
   8 sysnames="syscalls.c"
   9 sysproto="../sys/sysproto.h"
  10 sysunion="../sys/sysunion.h"
  11 sysproto_h=_SYS_SYSPROTO_H_
  12 syshdr="../sys/syscall.h"
  13 sysmk="../sys/syscall.mk"
  14 syssw="init_sysent.c"
  15 syscallprefix="SYS_"
  16 switchname="sysent"
  17 namesname="syscallnames"
  18
  19 # tmp files:
  20 sysdcl="sysent.dcl.$$"
  21 syscompat="sysent.compat.$$"
  22 syscompatdcl="sysent.compatdcl.$$"
  23 sysent="sysent.switch.$$"
  24 sysinc="sysinc.switch.$$"
  25 sysarg="sysarg.switch.$$"
  26 sysun="sysunion.switch.$$"
  27
  28 trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun" 0
  29
  30 touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun
  31
  32 case $# in
  33     0)  echo "Usage: $0 input-file <config-file>" 1>&2
  34         exit 1
  35         ;;
  36 esac
  37
  38 if [ -n "$2" -a -f "$2" ]; then
  39         . $2
  40 fi
  41
  42 sed -e '
  43 s/\$//g
  44 :join
  45         /\\$/{a\
  46
  47         N
  48         s/\\\n//
  49         b join
  50         }
  51 2,${
  52         /^#/!s/\([{}()*,]\)/ \1 /g
  53 }
  54 ' < $1 | awk "
  55         BEGIN {
  56                 sysdcl = \"$sysdcl\"
  57                 sysproto = \"$sysproto\"
  58                 sysproto_h = \"$sysproto_h\"
  59                 syscompat = \"$syscompat\"
  60                 syscompatdcl = \"$syscompatdcl\"
  61                 sysent = \"$sysent\"
  62                 syssw = \"$syssw\"
  63                 sysinc = \"$sysinc\"
  64                 sysarg = \"$sysarg\"
  65                 sysun = \"$sysun\"
  66                 sysnames = \"$sysnames\"
  67                 syshdr = \"$syshdr\"
  68                 sysmk = \"$sysmk\"
  69                 compat = \"$compat\"
  70                 syscallprefix = \"$syscallprefix\"
  71                 switchname = \"$switchname\"
  72                 namesname = \"$namesname\"
  73                 infile = \"$1\"
  74                 "'
  75
  76                 printf "/*\n * System call switch table.\n *\n" > syssw
  77                 printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syssw
  78                 printf " *               by running make sysent in the same directory.\n" > syssw
  79                 printf " */\n\n" > syssw
  80
  81                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  82                 printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysarg
  83                 printf " *               by running make sysent in the same directory.\n" > sysarg
  84                 printf " */\n\n" > sysarg
  85                 printf "#ifndef _KERNEL\n" >sysarg
  86                 printf "#error \"This file should not be included by userland programs.\"\n" >sysarg
  87                 printf "#endif\n\n" >sysarg
  88                 printf "#ifndef %s\n", sysproto_h > sysarg
  89                 printf "#define\t%s\n\n", sysproto_h > sysarg
  90                 printf "#include <sys/select.h>\n" > sysarg
  91                 printf "#include <sys/signal.h>\n" > sysarg
  92                 printf "#include <sys/acl.h>\n" > sysarg
  93                 printf "#include <sys/cpumask.h>\n" > sysarg
  94                 printf "#include <sys/mqueue.h>\n" > sysarg
  95                 printf "#include <sys/msgport.h>\n" > sysarg
  96                 printf "#include <sys/procctl.h>\n\n" > sysarg
  97                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
  98                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
  99
 100                 printf "/*\n * System call names.\n *\n" > sysnames
 101                 printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysnames
 102                 printf " *               by running make sysent in the same directory.\n" > sysnames
 103                 printf " */\n\n" > sysnames
 104                 printf "const char *%s[] = {\n", namesname > sysnames
 105
 106                 printf "/*\n * System call numbers.\n *\n" > syshdr
 107                 printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syshdr
 108                 printf " *               by running make sysent in the same directory.\n" > syshdr
 109                 printf " */\n\n" > syshdr
 110
 111                 printf "# DragonFly system call names.\n" > sysmk
 112                 printf "# DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysmk
 113                 printf "#               by running make sysent in the same directory.\n" > sysmk
 114                 printf "MIASM = " > sysmk
 115
 116                 printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
 117                 printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysun
 118                 printf " *               by running make sysent in the same directory.\n" > sysun
 119                 printf " */\n\n" > sysun
 120                 printf "#ifndef _KERNEL\n" >sysun
 121                 printf "#error \"This file should not be included by userland programs.\"\n" >sysun
 122                 printf "#endif\n\n" >sysun
 123                 printf "#include <sys/sysproto.h>\n\n" > sysun
 124                 printf "union sysunion {\n" > sysun
 125
 126                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 127                 printf "struct sysent %s[] = {\n",switchname > sysent
 128
 129                 printf "\n#ifdef _KERNEL\n\n" > sysdcl
 130                 printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
 131                 printf "struct sysmsg;\n\n" > sysdcl
 132                 printf "struct sysmsg;\n\n" > syscompatdcl
 133         }
 134         NF == 0 || $1 ~ /^;/ {
 135                 next
 136         }
 137         $1 ~ /^#[       ]*include/ {
 138                 print > sysinc
 139                 next
 140         }
 141         $1 ~ /^#[       ]*if/ {
 142                 print > sysent
 143                 print > sysdcl
 144                 print > sysarg
 145                 print > syscompat
 146                 print > sysnames
 147                 print > sysun
 148                 savesyscall = syscall
 149                 next
 150         }
 151         $1 ~ /^#[       ]*else/ {
 152                 print > sysent
 153                 print > sysdcl
 154                 print > sysarg
 155                 print > sysun
 156                 print > syscompat
 157                 print > sysnames
 158                 syscall = savesyscall
 159                 next
 160         }
 161         $1 ~ /^#/ {
 162                 print > sysent
 163                 print > sysdcl
 164                 print > sysarg
 165                 print > sysun
 166                 print > syscompat
 167                 print > sysnames
 168                 next
 169         }
 170         syscall != $1 {
 171                 printf "%s: line %d: syscall number out of sync at %d\n",
 172                     infile, NR, syscall
 173                 printf "line is:\n"
 174                 print
 175                 exit 1
 176         }
 177         function align_sysent_comment(column) {
 178                 printf("\t") > sysent
 179                 column = column + 8 - column % 8
 180                 while (column < 56) {
 181                         printf("\t") > sysent
 182                         column = column + 8
 183                 }
 184         }
 185         function parserr(was, wanted) {
 186                 printf "%s: line %d: unexpected %s (expected %s)\n",
 187                     infile, NR, was, wanted
 188                 exit 1
 189         }
 190         function parseline() {
 191                 f=3                     # toss number and type
 192                 argc= 0;
 193                 argssize = "0"
 194                 rsize=4
 195                 if ($NF != "}") {
 196                         funcalias=$(NF-2)
 197                         argalias=$(NF-1)
 198                         rettype=$NF
 199                         end=NF-3
 200                 } else {
 201                         funcalias=""
 202                         argalias=""
 203                         rettype="int"
 204                         end=NF
 205                 }
 206                 if ($2 == "NODEF") {
 207                         funcname=$3
 208                         argssize = "AS(" $5 ")"
 209                         return
 210                 }
 211                 if ($f != "{")
 212                         parserr($f, "{")
 213                 f++
 214                 if ($end != "}")
 215                         parserr($end, "}")
 216                 end--
 217                 if ($end != ";")
 218                         parserr($end, ";")
 219                 end--
 220                 if ($end != ")")
 221                         parserr($end, ")")
 222                 end--
 223
 224                 rtype=$f
 225                 f++     #function return type
 226
 227                 funcname=$f
 228                 usefuncname=$f
 229                 if (funcalias == "")
 230                         funcalias = funcname
 231                 if (argalias == "")
 232                         argalias = funcname "_args"
 233                 f++
 234
 235                 if ($f != "(")
 236                         parserr($f, ")")
 237                 f++
 238
 239                 if (f == end) {
 240                         if ($f != "void")
 241                                 parserr($f, "argument definition")
 242                         return
 243                 }
 244
 245                 if (rtype == "caddr_t")
 246                         rsize = 8
 247                 if (rtype == "size_t")
 248                         rsize = 8
 249                 if (rtype == "ssize_t")
 250                         rsize = 8
 251                 if (rtype == "off_t")
 252                         rsize = 8
 253
 254                 while (f <= end) {
 255                         argc++
 256                         argtype[argc]=""
 257                         oldf=""
 258                         while (f < end && $(f+1) != ",") {
 259                                 if (argtype[argc] != "" && oldf != "*")
 260                                         argtype[argc] = argtype[argc]" ";
 261                                 argtype[argc] = argtype[argc]$f;
 262                                 oldf = $f;
 263                                 f++
 264                         }
 265                         if (argtype[argc] == "")
 266                                 parserr($f, "argument definition")
 267                         argname[argc]=$f;
 268                         f += 2;                 # skip name, and any comma
 269                 }
 270                 if (argc != 0)
 271                         argssize = "AS(" argalias ")"
 272         }
 273         {       comment = $3
 274                 if (NF < 6)
 275                         for (i = 4; i <= NF; i++)
 276                                 comment = comment " " $i
 277         }
 278         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 279             || $2 == "NOIMPL" {
 280                 parseline()
 281                 if ((!nosys || funcname != "nosys") && \
 282                     (funcname != "lkmnosys")) {
 283                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 284                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 285                                 printf("struct\t%s {\n", argalias) > sysarg
 286                                 for (i = 1; i <= argc; i++)
 287                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 288                                             argtype[i], argname[i],
 289                                             argname[i], argtype[i]) > sysarg
 290                                 printf("};\n") > sysarg
 291                         }
 292                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 293                             $2 != "NODEF") {
 294                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 295                                 printf("struct\t%s {\n", argalias) > sysarg
 296                                 printf("\tregister_t dummy;\n") > sysarg
 297                                 printf("};\n") > sysarg
 298                         }
 299                 }
 300                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 301                     (funcname != "nosys" || !nosys)) || \
 302                     (funcname == "lkmnosys" && !lkmnosys) || \
 303                     funcname == "lkmressys") {
 304                         printf("%s\tsys_%s (struct sysmsg *sysmsg, const struct %s *)",
 305                             rettype, funcname, argalias) > sysdcl
 306                         printf(";\n") > sysdcl
 307                 }
 308                 if (funcname == "nosys")
 309                         nosys = 1
 310                 if (funcname == "lkmnosys")
 311                         lkmnosys = 1
 312                 printf("\t{ %s, %s, (sy_call_t *)", argssize, rsize) > sysent
 313                 column = 8 + 2 + length(argssize) + 15
 314                 if ($2 != "NOIMPL") {
 315                         printf("sys_%s },", funcname) > sysent
 316                         column = column + length(funcname) + 7
 317                 } else {
 318                         printf("sys_%s },", "nosys") > sysent
 319                         column = column + length("nosys") + 7
 320                 }
 321                 align_sysent_comment(column)
 322                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 323                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 324                     funcalias, syscall, funcalias) > sysnames
 325                 if ($2 != "NODEF") {
 326                         printf("#define\t%s%s\t%d\n", syscallprefix,
 327                             funcalias, syscall) > syshdr
 328                         printf(" \\\n\t%s.o", funcalias) > sysmk
 329                 }
 330                 syscall++
 331                 next
 332         }
 333         $2 == "OBSOL" {
 334                 printf("\t{ 0, 4, (sy_call_t *)sys_nosys },") > sysent
 335                 align_sysent_comment(37)
 336                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 337                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 338                     $3, syscall, comment) > sysnames
 339                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 340                     syscall, comment) > syshdr
 341                 syscall++
 342                 next
 343         }
 344         $2 == "UNIMPL" {
 345                 printf("\t{ 0, 4, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
 346                     syscall, comment) > sysent
 347                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 348                     syscall, syscall, comment) > sysnames
 349                 syscall++
 350                 next
 351         }
 352         {
 353                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 354                 exit 1
 355         }
 356         END {
 357                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 358                 if (ncompat != 0)
 359                         printf "#define compat(n, name) 0, 4, (sy_call_t *)sys_nosys\n" > sysinc
 360
 361                 printf("\n#undef PAD_\n") > sysarg
 362                 printf("\n#endif /* _KERNEL */\n") > syscompatdcl
 363                 printf("\n#endif /* _KERNEL */\n") > sysdcl
 364                 printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
 365
 366                 printf("\n") > sysmk
 367                 printf("};\n") > sysent
 368                 printf("};\n") > sysnames
 369                 printf("};\n") > sysun
 370                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 371                     > syshdr
 372         } '
 373
 374 cat $sysinc $sysent >> $syssw
 375 cat $sysarg $syscompat $syscompatdcl $sysdcl > $sysproto
 376 cat $sysun > $sysunion