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 # $DragonFly: src/sys/kern/makesyscalls.sh,v 1.4 2003/06/23 17:55:41 dillon Exp $
   5
   6 set -e
   7
   8 # name of compat option:
   9 compat=COMPAT_43
  10
  11 # output files:
  12 sysnames="syscalls.c"
  13 sysproto="../sys/sysproto.h"
  14 sysproto_h=_SYS_SYSPROTO_H_
  15 syshdr="../sys/syscall.h"
  16 sysmk="../sys/syscall.mk"
  17 syssw="init_sysent.c"
  18 syshide="../sys/syscall-hide.h"
  19 syscallprefix="SYS_"
  20 switchname="sysent"
  21 namesname="syscallnames"
  22
  23 # tmp files:
  24 sysdcl="sysent.dcl.$$"
  25 syscompat="sysent.compat.$$"
  26 syscompatdcl="sysent.compatdcl.$$"
  27 sysent="sysent.switch.$$"
  28 sysinc="sysinc.switch.$$"
  29 sysarg="sysarg.switch.$$"
  30
  31 trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg" 0
  32
  33 touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg
  34
  35 case $# in
  36     0)  echo "Usage: $0 input-file <config-file>" 1>&2
  37         exit 1
  38         ;;
  39 esac
  40
  41 if [ -n "$2" -a -f "$2" ]; then
  42         . $2
  43 fi
  44
  45 sed -e '
  46 s/\$//g
  47 :join
  48         /\\$/{a\
  49
  50         N
  51         s/\\\n//
  52         b join
  53         }
  54 2,${
  55         /^#/!s/\([{}()*,]\)/ \1 /g
  56 }
  57 ' < $1 | awk "
  58         BEGIN {
  59                 sysdcl = \"$sysdcl\"
  60                 sysproto = \"$sysproto\"
  61                 sysproto_h = \"$sysproto_h\"
  62                 syscompat = \"$syscompat\"
  63                 syscompatdcl = \"$syscompatdcl\"
  64                 sysent = \"$sysent\"
  65                 syssw = \"$syssw\"
  66                 sysinc = \"$sysinc\"
  67                 sysarg = \"$sysarg\"
  68                 sysnames = \"$sysnames\"
  69                 syshdr = \"$syshdr\"
  70                 sysmk = \"$sysmk\"
  71                 compat = \"$compat\"
  72                 syshide = \"$syshide\"
  73                 syscallprefix = \"$syscallprefix\"
  74                 switchname = \"$switchname\"
  75                 namesname = \"$namesname\"
  76                 infile = \"$1\"
  77                 "'
  78
  79                 printf "/*\n * System call switch table.\n *\n" > syssw
  80                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  81                 printf " * \$\TurtleBSD\$\n" > syssw
  82
  83                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  84                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  85                 printf " * \$\TurtleBSD\$\n" > sysarg
  86
  87                 printf "\n#ifdef %s\n\n", compat > syscompat
  88
  89                 printf "/*\n * System call names.\n *\n" > sysnames
  90                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  91                 printf " * \$\TurtleBSD\$\n" > sysnames
  92
  93                 printf "/*\n * System call numbers.\n *\n" > syshdr
  94                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
  95                 printf " * \$\TurtleBSD\$\n" > syshdr
  96                 printf "# TurtleBSD system call names.\n" > sysmk
  97                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
  98                 printf "# \$\TurtleBSD\$\n" > sysmk
  99                 printf "/*\n * System call hiders.\n *\n" > syshide
 100                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
 101                 printf " * \$\TurtleBSD\$\n" > syshide
 102         }
 103         NR == 1 {
 104                 gsub("[$]TurtleBSD: ", "", $0)
 105                 gsub(" [$]", "", $0)
 106
 107                 printf " * created from%s\n */\n\n", $0 > syssw
 108
 109                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 110                 printf "struct sysent %s[] = {\n",switchname > sysent
 111
 112                 printf " * created from%s\n */\n\n", $0 > sysarg
 113                 printf "#ifndef %s\n", sysproto_h > sysarg
 114                 printf "#define\t%s\n\n", sysproto_h > sysarg
 115                 printf "#include <sys/signal.h>\n\n" > sysarg
 116                 printf "#include <sys/acl.h>\n\n" > sysarg
 117                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 118                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 119
 120                 printf " * created from%s\n */\n\n", $0 > sysnames
 121                 printf "char *%s[] = {\n", namesname > sysnames
 122
 123                 printf " * created from%s\n */\n\n", $0 > syshdr
 124
 125                 printf "# created from%s\nMIASM = ", $0 > sysmk
 126
 127                 printf " * created from%s\n */\n\n", $0 > syshide
 128                 next
 129         }
 130         NF == 0 || $1 ~ /^;/ {
 131                 next
 132         }
 133         $1 ~ /^#[       ]*include/ {
 134                 print > sysinc
 135                 next
 136         }
 137         $1 ~ /^#[       ]*if/ {
 138                 print > sysent
 139                 print > sysdcl
 140                 print > sysarg
 141                 print > syscompat
 142                 print > sysnames
 143                 print > syshide
 144                 savesyscall = syscall
 145                 next
 146         }
 147         $1 ~ /^#[       ]*else/ {
 148                 print > sysent
 149                 print > sysdcl
 150                 print > sysarg
 151                 print > syscompat
 152                 print > sysnames
 153                 print > syshide
 154                 syscall = savesyscall
 155                 next
 156         }
 157         $1 ~ /^#/ {
 158                 print > sysent
 159                 print > sysdcl
 160                 print > sysarg
 161                 print > syscompat
 162                 print > sysnames
 163                 print > syshide
 164                 next
 165         }
 166         syscall != $1 {
 167                 printf "%s: line %d: syscall number out of sync at %d\n",
 168                     infile, NR, syscall
 169                 printf "line is:\n"
 170                 print
 171                 exit 1
 172         }
 173         function align_sysent_comment(column) {
 174                 printf("\t") > sysent
 175                 column = column + 8 - column % 8
 176                 while (column < 56) {
 177                         printf("\t") > sysent
 178                         column = column + 8
 179                 }
 180         }
 181         function parserr(was, wanted) {
 182                 printf "%s: line %d: unexpected %s (expected %s)\n",
 183                     infile, NR, was, wanted
 184                 exit 1
 185         }
 186         function parseline() {
 187                 f=4                     # toss number and type
 188                 argc= 0;
 189                 argssize = "0"
 190                 if ($NF != "}") {
 191                         funcalias=$(NF-2)
 192                         argalias=$(NF-1)
 193                         rettype=$NF
 194                         end=NF-3
 195                 } else {
 196                         funcalias=""
 197                         argalias=""
 198                         rettype="int"
 199                         end=NF
 200                 }
 201                 if ($2 == "NODEF") {
 202                         funcname=$4
 203                         argssize = "AS(" $6 ")"
 204                         return
 205                 }
 206                 if ($f != "{")
 207                         parserr($f, "{")
 208                 f++
 209                 if ($end != "}")
 210                         parserr($end, "}")
 211                 end--
 212                 if ($end != ";")
 213                         parserr($end, ";")
 214                 end--
 215                 if ($end != ")")
 216                         parserr($end, ")")
 217                 end--
 218
 219                 f++     #function return type
 220
 221                 funcname=$f
 222                 if (funcalias == "")
 223                         funcalias = funcname
 224                 if (argalias == "") {
 225                         argalias = funcname "_args"
 226                         if ($2 == "COMPAT")
 227                                 argalias = "o" argalias
 228                 }
 229                 f++
 230
 231                 if ($f != "(")
 232                         parserr($f, ")")
 233                 f++
 234
 235                 if (f == end) {
 236                         if ($f != "void")
 237                                 parserr($f, "argument definition")
 238                         return
 239                 }
 240
 241                 while (f <= end) {
 242                         argc++
 243                         argtype[argc]=""
 244                         oldf=""
 245                         while (f < end && $(f+1) != ",") {
 246                                 if (argtype[argc] != "" && oldf != "*")
 247                                         argtype[argc] = argtype[argc]" ";
 248                                 argtype[argc] = argtype[argc]$f;
 249                                 oldf = $f;
 250                                 f++
 251                         }
 252                         if (argtype[argc] == "")
 253                                 parserr($f, "argument definition")
 254                         argname[argc]=$f;
 255                         f += 2;                 # skip name, and any comma
 256                 }
 257                 if (argc != 0)
 258                         argssize = "AS(" argalias ")"
 259         }
 260         {       comment = $4
 261                 if (NF < 7)
 262                         for (i = 5; i <= NF; i++)
 263                                 comment = comment " " $i
 264         }
 265         # if the "MPSAFE" keyword is found, note it and shift the line
 266         mpsafe = ""
 267         $2 == "MPSAFE" {
 268                 for (i = 2; i <= NF; i++)
 269                         $i = $(i + 1);
 270                 NF -= 1;
 271                 mpsafe = "SYF_MPSAFE | "
 272         }
 273         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 274             || $2 == "NOIMPL" {
 275                 parseline()
 276                 if ((!nosys || funcname != "nosys") && \
 277                     (funcname != "lkmnosys")) {
 278                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 279                                 printf("struct\t%s {\n", argalias) > sysarg
 280                                 for (i = 1; i <= argc; i++)
 281                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 282                                             argtype[i], argname[i],
 283                                             argname[i], argtype[i]) > sysarg
 284                                 printf("};\n") > sysarg
 285                         }
 286                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 287                             $2 != "NODEF")
 288                                 printf("struct\t%s {\n\tregister_t dummy;\n};\n",
 289                                     argalias) > sysarg
 290                 }
 291                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 292                     (funcname != "nosys" || !nosys)) || \
 293                     (funcname == "lkmnosys" && !lkmnosys) || \
 294                     funcname == "lkmressys") {
 295                         printf("%s\t%s __P((struct %s *))",
 296                             rettype, funcname, argalias) > sysdcl
 297                         printf(";\n") > sysdcl
 298                 }
 299                 if (funcname == "nosys")
 300                         nosys = 1
 301                 if (funcname == "lkmnosys")
 302                         lkmnosys = 1
 303                 printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
 304                 column = 8 + 2 + length(mpsafe) + length(argssize) + 15
 305                 if ($2 != "NOIMPL") {
 306                         printf("%s },", funcname) > sysent
 307                         column = column + length(funcname) + 3
 308                 } else {
 309                         printf("%s },", "nosys") > sysent
 310                         column = column + length("nosys") + 3
 311                 }
 312                 align_sysent_comment(column)
 313                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 314                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 315                     funcalias, syscall, funcalias) > sysnames
 316                 if ($2 != "NODEF") {
 317                         printf("#define\t%s%s\t%d\n", syscallprefix,
 318                             funcalias, syscall) > syshdr
 319                         printf(" \\\n\t%s.o", funcalias) > sysmk
 320                 }
 321                 if ($3 != "NOHIDE")
 322                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 323                 syscall++
 324                 next
 325         }
 326         $2 == "COMPAT" || $2 == "CPT_NOA" {
 327                 ncompat++
 328                 parseline()
 329                 if (argc != 0 && $2 != "CPT_NOA") {
 330                         printf("struct\t%s {\n", argalias) > syscompat
 331                         for (i = 1; i <= argc; i++)
 332                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 333                                     argtype[i], argname[i],
 334                                     argname[i], argtype[i]) > syscompat
 335                         printf("};\n") > syscompat
 336                 }
 337                 else if($2 != "CPT_NOA")
 338                         printf("struct\t%s {\n\tregister_t dummy;\n};\n",
 339                             argalias) > sysarg
 340                 printf("%s\to%s __P((struct %s *));\n",
 341                     rettype, funcname, argalias) > syscompatdcl
 342                 printf("\t{ compat(%s%s,%s) },",
 343                     mpsafe, argssize, funcname) > sysent
 344                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 345                     length(argssize) + 1 + length(funcname) + 4)
 346                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 347                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 348                     funcalias, syscall, funcalias) > sysnames
 349                 printf("\t\t\t\t/* %d is old %s */\n",
 350                     syscall, funcalias) > syshdr
 351                 if ($3 != "NOHIDE")
 352                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 353                 syscall++
 354                 next
 355         }
 356         $2 == "LIBCOMPAT" {
 357                 ncompat++
 358                 parseline()
 359                 printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
 360                 printf("\t{ compat(%s%s,%s) },",
 361                     mpsafe, argssize, funcname) > sysent
 362                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 363                     length(argssize) + 1 + length(funcname) + 4)
 364                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 365                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 366                     funcalias, syscall, funcalias) > sysnames
 367                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 368                     syscallprefix, funcalias, syscall) > syshdr
 369                 printf(" \\\n\t%s.o", funcalias) > sysmk
 370                 if ($3 != "NOHIDE")
 371                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 372                 syscall++
 373                 next
 374         }
 375         $2 == "OBSOL" {
 376                 printf("\t{ 0, (sy_call_t *)nosys },") > sysent
 377                 align_sysent_comment(34)
 378                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 379                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 380                     $4, syscall, comment) > sysnames
 381                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 382                     syscall, comment) > syshdr
 383                 if ($3 != "NOHIDE")
 384                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 385                 syscall++
 386                 next
 387         }
 388         $2 == "UNIMPL" {
 389                 printf("\t{ 0, (sy_call_t *)nosys },\t\t\t/* %d = %s */\n",
 390                     syscall, comment) > sysent
 391                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 392                     syscall, syscall, comment) > sysnames
 393                 if ($3 != "NOHIDE")
 394                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 395                 syscall++
 396                 next
 397         }
 398         {
 399                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 400                 exit 1
 401         }
 402         END {
 403                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 404                 if (ncompat != 0) {
 405                         printf "#include \"opt_compat.h\"\n\n" > syssw
 406                         printf "\n#ifdef %s\n", compat > sysinc
 407                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 408                         printf "#else\n" > sysinc
 409                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 410                         printf "#endif\n" > sysinc
 411                 }
 412
 413                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 414                 printf("#undef PAD_\n") > syscompatdcl
 415                 printf("\n#endif /* !%s */\n", sysproto_h) > syscompatdcl
 416
 417                 printf("\n") > sysmk
 418                 printf("};\n") > sysent
 419                 printf("};\n") > sysnames
 420                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 421                     > syshdr
 422         } '
 423
 424 cat $sysinc $sysent >> $syssw
 425 cat $sysarg $sysdcl $syscompat $syscompatdcl > $sysproto