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 1.17 2008/05/19 10:19:49 corecode Exp $
   5
   6 set -e
   7
   8 # name of compat option:
   9 compat=COMPAT_43
  10 # name of DragonFly 1.2 compat option
  11 compatdf12=COMPAT_DF12
  12
  13 # output files:
  14 sysnames="syscalls.c"
  15 sysproto="../sys/sysproto.h"
  16 sysunion="../sys/sysunion.h"
  17 sysproto_h=_SYS_SYSPROTO_H_
  18 syshdr="../sys/syscall.h"
  19 sysmk="../sys/syscall.mk"
  20 syssw="init_sysent.c"
  21 syshide="../sys/syscall-hide.h"
  22 syscallprefix="SYS_"
  23 switchname="sysent"
  24 namesname="syscallnames"
  25
  26 # tmp files:
  27 sysdcl="sysent.dcl.$$"
  28 syscompat="sysent.compat.$$"
  29 syscompatdf12="sysent.compatdf12.$$"
  30 syscompatdcl="sysent.compatdcl.$$"
  31 syscompatdcldf12="sysent.compatdcldf12.$$"
  32 sysent="sysent.switch.$$"
  33 sysinc="sysinc.switch.$$"
  34 sysarg="sysarg.switch.$$"
  35 sysun="sysunion.switch.$$"
  36
  37 trap "rm $sysdcl $syscompat $syscompatdf12 $syscompatdcl $syscompatdcldf12 $sysent $sysinc $sysarg $sysun" 0
  38
  39 touch $sysdcl $syscompat $syscompatdf12 $syscompatdcl $syscompatdcldf12 $sysent $sysinc $sysarg $sysun
  40
  41 case $# in
  42     0)  echo "Usage: $0 input-file <config-file>" 1>&2
  43         exit 1
  44         ;;
  45 esac
  46
  47 if [ -n "$2" -a -f "$2" ]; then
  48         . $2
  49 fi
  50
  51 sed -e '
  52 s/\$//g
  53 :join
  54         /\\$/{a\
  55
  56         N
  57         s/\\\n//
  58         b join
  59         }
  60 2,${
  61         /^#/!s/\([{}()*,]\)/ \1 /g
  62 }
  63 ' < $1 | awk "
  64         BEGIN {
  65                 sysdcl = \"$sysdcl\"
  66                 sysproto = \"$sysproto\"
  67                 sysproto_h = \"$sysproto_h\"
  68                 syscompat = \"$syscompat\"
  69                 syscompatdf12 = \"$syscompatdf12\"
  70                 syscompatdcl = \"$syscompatdcl\"
  71                 syscompatdcldf12 = \"$syscompatdcldf12\"
  72                 sysent = \"$sysent\"
  73                 syssw = \"$syssw\"
  74                 sysinc = \"$sysinc\"
  75                 sysarg = \"$sysarg\"
  76                 sysun = \"$sysun\"
  77                 sysnames = \"$sysnames\"
  78                 syshdr = \"$syshdr\"
  79                 sysmk = \"$sysmk\"
  80                 compat = \"$compat\"
  81                 compatdf12 = \"$compatdf12\"
  82                 syshide = \"$syshide\"
  83                 syscallprefix = \"$syscallprefix\"
  84                 switchname = \"$switchname\"
  85                 namesname = \"$namesname\"
  86                 infile = \"$1\"
  87                 "'
  88
  89                 printf "/*\n * System call switch table.\n *\n" > syssw
  90                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  91                 printf " */\n\n" > syssw
  92
  93                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  94                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  95                 printf " */\n\n" > sysarg
  96                 printf "#ifndef %s\n", sysproto_h > sysarg
  97                 printf "#define\t%s\n\n", sysproto_h > sysarg
  98                 printf "#include <sys/select.h>\n\n" > sysarg
  99                 printf "#include <sys/signal.h>\n\n" > sysarg
 100                 printf "#include <sys/acl.h>\n\n" > sysarg
 101                 printf "#include <sys/msgport.h>\n\n" > sysarg
 102                 printf "#include <sys/sysmsg.h>\n\n" > sysarg
 103                 printf "#include <sys/syslink.h>\n\n" > sysarg
 104                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 105                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 106
 107                 printf "\n#ifdef %s\n\n", compat > syscompat
 108                 printf "\n#ifdef %s\n\n", compatdf12 > syscompatdf12
 109
 110                 printf "/*\n * System call names.\n *\n" > sysnames
 111                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 112                 printf " */\n\n" > sysnames
 113                 printf "const char *%s[] = {\n", namesname > sysnames
 114
 115                 printf "/*\n * System call numbers.\n *\n" > syshdr
 116                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 117                 printf " */\n\n" > syshdr
 118
 119                 printf "# DragonFly system call names.\n" > sysmk
 120                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 121                 printf "MIASM = " > sysmk
 122
 123                 printf "/*\n * System call hiders.\n *\n" > syshide
 124                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
 125                 printf " */\n\n" > syshide
 126
 127                 printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
 128                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysun
 129                 printf " */\n\n" > sysun
 130                 printf "union sysunion {\n" > sysun
 131                 printf "#ifdef _KERNEL /* header only applies in kernel */\n" > sysun
 132                 printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
 133                 printf "\tstruct\tsysmsg sysmsg;\n" > sysun
 134                 printf "#endif\n" > sysun
 135
 136                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 137                 printf "struct sysent %s[] = {\n",switchname > sysent
 138
 139                 printf "\n#ifdef _KERNEL\n\n" > sysdcl
 140                 printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
 141                 printf "\n#ifdef _KERNEL\n\n" > syscompatdcldf12
 142         }
 143         NF == 0 || $1 ~ /^;/ {
 144                 next
 145         }
 146         $1 ~ /^#[       ]*include/ {
 147                 print > sysinc
 148                 next
 149         }
 150         $1 ~ /^#[       ]*if/ {
 151                 print > sysent
 152                 print > sysdcl
 153                 print > sysarg
 154                 print > syscompat
 155                 print > syscompatdf12
 156                 print > sysnames
 157                 print > syshide
 158                 print > sysun
 159                 savesyscall = syscall
 160                 next
 161         }
 162         $1 ~ /^#[       ]*else/ {
 163                 print > sysent
 164                 print > sysdcl
 165                 print > sysarg
 166                 print > sysun
 167                 print > syscompat
 168                 print > syscompatdf12
 169                 print > sysnames
 170                 print > syshide
 171                 syscall = savesyscall
 172                 next
 173         }
 174         $1 ~ /^#/ {
 175                 print > sysent
 176                 print > sysdcl
 177                 print > sysarg
 178                 print > sysun
 179                 print > syscompat
 180                 print > syscompatdf12
 181                 print > sysnames
 182                 print > syshide
 183                 next
 184         }
 185         syscall != $1 {
 186                 printf "%s: line %d: syscall number out of sync at %d\n",
 187                     infile, NR, syscall
 188                 printf "line is:\n"
 189                 print
 190                 exit 1
 191         }
 192         function align_sysent_comment(column) {
 193                 printf("\t") > sysent
 194                 column = column + 8 - column % 8
 195                 while (column < 56) {
 196                         printf("\t") > sysent
 197                         column = column + 8
 198                 }
 199         }
 200         function parserr(was, wanted) {
 201                 printf "%s: line %d: unexpected %s (expected %s)\n",
 202                     infile, NR, was, wanted
 203                 exit 1
 204         }
 205         function parseline() {
 206                 f=4                     # toss number and type
 207                 argc= 0;
 208                 argssize = "0"
 209                 if ($NF != "}") {
 210                         funcalias=$(NF-2)
 211                         argalias=$(NF-1)
 212                         rettype=$NF
 213                         end=NF-3
 214                 } else {
 215                         funcalias=""
 216                         argalias=""
 217                         rettype="int"
 218                         end=NF
 219                 }
 220                 if ($2 == "NODEF") {
 221                         funcname=$4
 222                         argssize = "AS(" $6 ")"
 223                         return
 224                 }
 225                 if ($f != "{")
 226                         parserr($f, "{")
 227                 f++
 228                 if ($end != "}")
 229                         parserr($end, "}")
 230                 end--
 231                 if ($end != ";")
 232                         parserr($end, ";")
 233                 end--
 234                 if ($end != ")")
 235                         parserr($end, ")")
 236                 end--
 237
 238                 f++     #function return type
 239
 240                 funcname=$f
 241                 usefuncname=$f
 242                 if (funcalias == "")
 243                         funcalias = funcname
 244                 if (argalias == "") {
 245                         argalias = funcname "_args"
 246                         if ($2 == "COMPAT") {
 247                                 argalias = "o" argalias
 248                                 usefuncname = "sys_o" funcname
 249                         }
 250                         if ($2 == "COMPAT_DF12") {
 251                                 argalias = "dfbsd12_" argalias
 252                                 usefuncname = "sys_dfbsd12_" funcname
 253                         }
 254                 }
 255                 f++
 256
 257                 if ($f != "(")
 258                         parserr($f, ")")
 259                 f++
 260
 261                 if (f == end) {
 262                         if ($f != "void")
 263                                 parserr($f, "argument definition")
 264                         return
 265                 }
 266
 267                 while (f <= end) {
 268                         argc++
 269                         argtype[argc]=""
 270                         oldf=""
 271                         while (f < end && $(f+1) != ",") {
 272                                 if (argtype[argc] != "" && oldf != "*")
 273                                         argtype[argc] = argtype[argc]" ";
 274                                 argtype[argc] = argtype[argc]$f;
 275                                 oldf = $f;
 276                                 f++
 277                         }
 278                         if (argtype[argc] == "")
 279                                 parserr($f, "argument definition")
 280                         argname[argc]=$f;
 281                         f += 2;                 # skip name, and any comma
 282                 }
 283                 if (argc != 0)
 284                         argssize = "AS(" argalias ")"
 285         }
 286         {       comment = $4
 287                 if (NF < 7)
 288                         for (i = 5; i <= NF; i++)
 289                                 comment = comment " " $i
 290         }
 291         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 292             || $2 == "NOIMPL" {
 293                 parseline()
 294                 if ((!nosys || funcname != "nosys") && \
 295                     (funcname != "lkmnosys")) {
 296                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 297                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 298                                 printf("struct\t%s {\n", argalias) > sysarg
 299                                 printf("#ifdef _KERNEL\n") > sysarg
 300                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 301                                 printf("#endif\n") > sysarg
 302                                 for (i = 1; i <= argc; i++)
 303                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 304                                             argtype[i], argname[i],
 305                                             argname[i], argtype[i]) > sysarg
 306                                 printf("};\n") > sysarg
 307                         }
 308                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 309                             $2 != "NODEF") {
 310                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 311                                 printf("struct\t%s {\n", argalias) > sysarg
 312                                 printf("#ifdef _KERNEL\n") > sysarg
 313                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 314                                 printf("#endif\n") > sysarg
 315                                 printf("\tregister_t dummy;\n") > sysarg
 316                                 printf("};\n") > sysarg
 317                         }
 318                 }
 319                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 320                     (funcname != "nosys" || !nosys)) || \
 321                     (funcname == "lkmnosys" && !lkmnosys) || \
 322                     funcname == "lkmressys") {
 323                         printf("%s\tsys_%s (struct %s *)",
 324                             rettype, funcname, argalias) > sysdcl
 325                         printf(";\n") > sysdcl
 326                 }
 327                 if (funcname == "nosys")
 328                         nosys = 1
 329                 if (funcname == "lkmnosys")
 330                         lkmnosys = 1
 331                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 332                 column = 8 + 2 + length(argssize) + 15
 333                 if ($2 != "NOIMPL") {
 334                         printf("sys_%s },", funcname) > sysent
 335                         column = column + length(funcname) + 7
 336                 } else {
 337                         printf("sys_%s },", "nosys") > sysent
 338                         column = column + length("nosys") + 7
 339                 }
 340                 align_sysent_comment(column)
 341                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 342                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 343                     funcalias, syscall, funcalias) > sysnames
 344                 if ($2 != "NODEF") {
 345                         printf("#define\t%s%s\t%d\n", syscallprefix,
 346                             funcalias, syscall) > syshdr
 347                         printf(" \\\n\t%s.o", funcalias) > sysmk
 348                 }
 349                 if ($3 != "NOHIDE")
 350                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 351                 syscall++
 352                 next
 353         }
 354         $2 == "COMPAT" || $2 == "CPT_NOA" {
 355                 ncompat++
 356                 parseline()
 357                 if (argc != 0 && $2 != "CPT_NOA") {
 358                         printf("#ifdef %s\n", compat) > sysun
 359                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 360                         printf("#endif\n") > sysun
 361                         printf("struct\t%s {\n", argalias) > syscompat
 362                         printf("#ifdef _KERNEL\n") > syscompat
 363                         printf("\tstruct sysmsg sysmsg;\n") > syscompat
 364                         printf("#endif\n") > syscompat
 365                         for (i = 1; i <= argc; i++)
 366                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 367                                     argtype[i], argname[i],
 368                                     argname[i], argtype[i]) > syscompat
 369                         printf("};\n") > syscompat
 370                 }
 371                 else if($2 != "CPT_NOA") {
 372                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 373                         printf("struct\t%s {\n", argalias) > sysarg
 374                         printf("#ifdef _KERNEL\n") > sysarg
 375                         printf("\tstruct sysmsg sysmsg;\n") > sysarg
 376                         printf("#endif\n") > sysarg
 377                         printf("\tregister_t dummy;\n") > sysarg
 378                         printf("};\n") > sysarg
 379                 }
 380                 printf("%s\tsys_o%s (struct %s *);\n",
 381                     rettype, funcname, argalias) > syscompatdcl
 382                 printf("\t{ compat(%s,%s) },",
 383                     argssize, funcname) > sysent
 384                 align_sysent_comment(8 + 9 + \
 385                     length(argssize) + 1 + length(funcname) + 4)
 386                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 387                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 388                     funcalias, syscall, funcalias) > sysnames
 389                 printf("\t\t\t\t/* %d is old %s */\n",
 390                     syscall, funcalias) > syshdr
 391                 if ($3 != "NOHIDE")
 392                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 393                 syscall++
 394                 next
 395         }
 396         $2 == "COMPAT_DF12" {
 397                 ncompatdf12++
 398                 parseline()
 399                 if (argc != 0) {
 400                         printf("#ifdef %s\n", compatdf12) > sysun
 401                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 402                         printf("#endif\n") > sysun
 403                         printf("struct\t%s {\n", argalias) > syscompatdf12
 404                         printf("#ifdef _KERNEL\n") > syscompatdf12
 405                         printf("\tstruct sysmsg sysmsg;\n") > syscompatdf12
 406                         printf("#endif\n") > syscompatdf12
 407                         for (i = 1; i <= argc; i++)
 408                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 409                                     argtype[i], argname[i],
 410                                     argname[i], argtype[i]) > syscompatdf12
 411                         printf("};\n") > syscompatdf12
 412                 }
 413                 else {
 414                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 415                         printf("struct\t%s {\n", argalias) > sysarg
 416                         printf("#ifdef _KERNEL\n") > sysarg
 417                         printf("\tstruct sysmsg sysmsg;\n") > sysarg
 418                         printf("#endif\n") > sysarg
 419                         printf("\tregister_t dummy;\n") > sysarg
 420                         printf("};\n") > sysarg
 421                 }
 422                 printf("%s\tsys_dfbsd12_%s (struct %s *);\n",
 423                     rettype, funcname, argalias) > syscompatdcldf12
 424                 printf("\t{ compatdf12(%s,%s) },",
 425                     argssize, funcname) > sysent
 426                 align_sysent_comment(8 + 9 + \
 427                     length(argssize) + 1 + length(funcname) + 4)
 428                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 429                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 430                     funcalias, syscall, funcalias) > sysnames
 431                 printf("\t\t\t\t/* %d is old %s */\n",
 432                     syscall, funcalias) > syshdr
 433                 if ($3 != "NOHIDE")
 434                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 435                 syscall++
 436                 next
 437         }
 438         $2 == "LIBCOMPAT" {
 439                 ncompat++
 440                 parseline()
 441                 printf("%s\tsys_o%s();\n", rettype, funcname) > syscompatdcl
 442                 printf("\t{ compat(%s,%s) },",
 443                     argssize, funcname) > sysent
 444                 align_sysent_comment(8 + 9 + \
 445                     length(argssize) + 1 + length(funcname) + 4)
 446                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 447                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 448                     funcalias, syscall, funcalias) > sysnames
 449                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 450                     syscallprefix, funcalias, syscall) > syshdr
 451                 printf(" \\\n\t%s.o", funcalias) > sysmk
 452                 if ($3 != "NOHIDE")
 453                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 454                 syscall++
 455                 next
 456         }
 457         $2 == "OBSOL" {
 458                 printf("\t{ 0, (sy_call_t *)sys_nosys },") > sysent
 459                 align_sysent_comment(37)
 460                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 461                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 462                     $4, syscall, comment) > sysnames
 463                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 464                     syscall, comment) > syshdr
 465                 if ($3 != "NOHIDE")
 466                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 467                 syscall++
 468                 next
 469         }
 470         $2 == "UNIMPL" {
 471                 printf("\t{ 0, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
 472                     syscall, comment) > sysent
 473                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 474                     syscall, syscall, comment) > sysnames
 475                 if ($3 != "NOHIDE")
 476                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 477                 syscall++
 478                 next
 479         }
 480         {
 481                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 482                 exit 1
 483         }
 484         END {
 485                 printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg)) / sizeof(register_t))\n" > sysinc
 486                 if (ncompat != 0) {
 487                         printf "#include \"opt_compat.h\"\n\n" > syssw
 488                         printf "\n#ifdef %s\n", compat > sysinc
 489                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(o,name))\n" > sysinc
 490                         printf "#else\n" > sysinc
 491                         printf "#define compat(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
 492                         printf "#endif\n" > sysinc
 493                 }
 494
 495                 if (ncompatdf12 != 0) {
 496                         printf "#include \"opt_compatdf12.h\"\n\n" > syssw
 497                         printf "\n#ifdef %s\n", compatdf12 > sysinc
 498                         printf "#define compatdf12(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(dfbsd12_,name))\n" > sysinc
 499                         printf "#else\n" > sysinc
 500                         printf "#define compatdf12(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
 501                         printf "#endif\n" > sysinc
 502                 }
 503
 504                 printf("\n#endif /* _KERNEL */\n") > syscompatdcl
 505                 printf("\n#endif /* _KERNEL */\n") > syscompatdcldf12
 506                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 507                 printf("\n#endif /* %s */\n\n", compatdf12) > syscompatdcldf12
 508
 509                 printf("\n") > sysmk
 510                 printf("};\n") > sysent
 511                 printf("};\n") > sysnames
 512                 printf("};\n") > sysun
 513                 printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
 514                 printf("#undef PAD_\n") > sysdcl
 515                 printf("\n#endif /* _KERNEL */\n") > sysdcl
 516                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 517                     > syshdr
 518         } '
 519
 520 cat $sysinc $sysent >> $syssw
 521 cat $sysarg $syscompat $syscompatdcl $syscompatdf12 $syscompatdcldf12 $sysdcl > $sysproto
 522 cat $sysun > $sysunion