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 "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         # if the "MPSAFE" keyword is found, note it and shift the line
 292         mpsafe = ""
 293         $2 == "MPSAFE" {
 294                 for (i = 2; i <= NF; i++)
 295                         $i = $(i + 1);
 296                 NF -= 1;
 297                 mpsafe = "SYF_MPSAFE | "
 298         }
 299         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 300             || $2 == "NOIMPL" {
 301                 parseline()
 302                 if ((!nosys || funcname != "nosys") && \
 303                     (funcname != "lkmnosys")) {
 304                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 305                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 306                                 printf("struct\t%s {\n", argalias) > sysarg
 307                                 printf("#ifdef _KERNEL\n") > sysarg
 308                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 309                                 printf("#endif\n") > sysarg
 310                                 for (i = 1; i <= argc; i++)
 311                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 312                                             argtype[i], argname[i],
 313                                             argname[i], argtype[i]) > sysarg
 314                                 printf("};\n") > sysarg
 315                         }
 316                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 317                             $2 != "NODEF") {
 318                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 319                                 printf("struct\t%s {\n", argalias) > sysarg
 320                                 printf("#ifdef _KERNEL\n") > sysarg
 321                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 322                                 printf("#endif\n") > sysarg
 323                                 printf("\tregister_t dummy;\n") > sysarg
 324                                 printf("};\n") > sysarg
 325                         }
 326                 }
 327                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 328                     (funcname != "nosys" || !nosys)) || \
 329                     (funcname == "lkmnosys" && !lkmnosys) || \
 330                     funcname == "lkmressys") {
 331                         printf("%s\tsys_%s (struct %s *)",
 332                             rettype, funcname, argalias) > sysdcl
 333                         printf(";\n") > sysdcl
 334                 }
 335                 if (funcname == "nosys")
 336                         nosys = 1
 337                 if (funcname == "lkmnosys")
 338                         lkmnosys = 1
 339                 printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
 340                 column = 8 + 2 + length(mpsafe) + length(argssize) + 15
 341                 if ($2 != "NOIMPL") {
 342                         printf("sys_%s },", funcname) > sysent
 343                         column = column + length(funcname) + 7
 344                 } else {
 345                         printf("sys_%s },", "nosys") > sysent
 346                         column = column + length("nosys") + 7
 347                 }
 348                 align_sysent_comment(column)
 349                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 350                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 351                     funcalias, syscall, funcalias) > sysnames
 352                 if ($2 != "NODEF") {
 353                         printf("#define\t%s%s\t%d\n", syscallprefix,
 354                             funcalias, syscall) > syshdr
 355                         printf(" \\\n\t%s.o", funcalias) > sysmk
 356                 }
 357                 if ($3 != "NOHIDE")
 358                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 359                 syscall++
 360                 next
 361         }
 362         $2 == "COMPAT" || $2 == "CPT_NOA" {
 363                 ncompat++
 364                 parseline()
 365                 if (argc != 0 && $2 != "CPT_NOA") {
 366                         printf("#ifdef %s\n", compat) > sysun
 367                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 368                         printf("#endif\n") > sysun
 369                         printf("struct\t%s {\n", argalias) > syscompat
 370                         printf("#ifdef _KERNEL\n") > syscompat
 371                         printf("\tstruct sysmsg sysmsg;\n") > syscompat
 372                         printf("#endif\n") > syscompat
 373                         for (i = 1; i <= argc; i++)
 374                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 375                                     argtype[i], argname[i],
 376                                     argname[i], argtype[i]) > syscompat
 377                         printf("};\n") > syscompat
 378                 }
 379                 else if($2 != "CPT_NOA") {
 380                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 381                         printf("struct\t%s {\n", argalias) > sysarg
 382                         printf("#ifdef _KERNEL\n") > sysarg
 383                         printf("\tstruct sysmsg sysmsg;\n") > sysarg
 384                         printf("#endif\n") > sysarg
 385                         printf("\tregister_t dummy;\n") > sysarg
 386                         printf("};\n") > sysarg
 387                 }
 388                 printf("%s\tsys_o%s (struct %s *);\n",
 389                     rettype, funcname, argalias) > syscompatdcl
 390                 printf("\t{ compat(%s%s,%s) },",
 391                     mpsafe, argssize, funcname) > sysent
 392                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 393                     length(argssize) + 1 + length(funcname) + 4)
 394                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 395                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 396                     funcalias, syscall, funcalias) > sysnames
 397                 printf("\t\t\t\t/* %d is old %s */\n",
 398                     syscall, funcalias) > syshdr
 399                 if ($3 != "NOHIDE")
 400                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 401                 syscall++
 402                 next
 403         }
 404         $2 == "COMPAT_DF12" {
 405                 ncompatdf12++
 406                 parseline()
 407                 if (argc != 0) {
 408                         printf("#ifdef %s\n", compatdf12) > sysun
 409                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 410                         printf("#endif\n") > sysun
 411                         printf("struct\t%s {\n", argalias) > syscompatdf12
 412                         printf("#ifdef _KERNEL\n") > syscompatdf12
 413                         printf("\tstruct sysmsg sysmsg;\n") > syscompatdf12
 414                         printf("#endif\n") > syscompatdf12
 415                         for (i = 1; i <= argc; i++)
 416                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 417                                     argtype[i], argname[i],
 418                                     argname[i], argtype[i]) > syscompatdf12
 419                         printf("};\n") > syscompatdf12
 420                 }
 421                 else {
 422                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 423                         printf("struct\t%s {\n", argalias) > sysarg
 424                         printf("#ifdef _KERNEL\n") > sysarg
 425                         printf("\tstruct sysmsg sysmsg;\n") > sysarg
 426                         printf("#endif\n") > sysarg
 427                         printf("\tregister_t dummy;\n") > sysarg
 428                         printf("};\n") > sysarg
 429                 }
 430                 printf("%s\tsys_dfbsd12_%s (struct %s *);\n",
 431                     rettype, funcname, argalias) > syscompatdcldf12
 432                 printf("\t{ compatdf12(%s%s,%s) },",
 433                     mpsafe, argssize, funcname) > sysent
 434                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 435                     length(argssize) + 1 + length(funcname) + 4)
 436                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 437                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 438                     funcalias, syscall, funcalias) > sysnames
 439                 printf("\t\t\t\t/* %d is old %s */\n",
 440                     syscall, funcalias) > syshdr
 441                 if ($3 != "NOHIDE")
 442                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 443                 syscall++
 444                 next
 445         }
 446         $2 == "LIBCOMPAT" {
 447                 ncompat++
 448                 parseline()
 449                 printf("%s\tsys_o%s();\n", rettype, funcname) > syscompatdcl
 450                 printf("\t{ compat(%s%s,%s) },",
 451                     mpsafe, argssize, funcname) > sysent
 452                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 453                     length(argssize) + 1 + length(funcname) + 4)
 454                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 455                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 456                     funcalias, syscall, funcalias) > sysnames
 457                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 458                     syscallprefix, funcalias, syscall) > syshdr
 459                 printf(" \\\n\t%s.o", funcalias) > sysmk
 460                 if ($3 != "NOHIDE")
 461                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 462                 syscall++
 463                 next
 464         }
 465         $2 == "OBSOL" {
 466                 printf("\t{ 0, (sy_call_t *)sys_nosys },") > sysent
 467                 align_sysent_comment(37)
 468                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 469                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 470                     $4, syscall, comment) > sysnames
 471                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 472                     syscall, comment) > syshdr
 473                 if ($3 != "NOHIDE")
 474                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 475                 syscall++
 476                 next
 477         }
 478         $2 == "UNIMPL" {
 479                 printf("\t{ 0, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
 480                     syscall, comment) > sysent
 481                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 482                     syscall, syscall, comment) > sysnames
 483                 if ($3 != "NOHIDE")
 484                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 485                 syscall++
 486                 next
 487         }
 488         {
 489                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 490                 exit 1
 491         }
 492         END {
 493                 printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg)) / sizeof(register_t))\n" > sysinc
 494                 if (ncompat != 0) {
 495                         printf "#include \"opt_compat.h\"\n\n" > syssw
 496                         printf "\n#ifdef %s\n", compat > sysinc
 497                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(o,name))\n" > sysinc
 498                         printf "#else\n" > sysinc
 499                         printf "#define compat(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
 500                         printf "#endif\n" > sysinc
 501                 }
 502
 503                 if (ncompatdf12 != 0) {
 504                         printf "#include \"opt_compatdf12.h\"\n\n" > syssw
 505                         printf "\n#ifdef %s\n", compatdf12 > sysinc
 506                         printf "#define compatdf12(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(dfbsd12_,name))\n" > sysinc
 507                         printf "#else\n" > sysinc
 508                         printf "#define compatdf12(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
 509                         printf "#endif\n" > sysinc
 510                 }
 511
 512                 printf("\n#endif /* _KERNEL */\n") > syscompatdcl
 513                 printf("\n#endif /* _KERNEL */\n") > syscompatdcldf12
 514                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 515                 printf("\n#endif /* %s */\n\n", compatdf12) > syscompatdcldf12
 516
 517                 printf("\n") > sysmk
 518                 printf("};\n") > sysent
 519                 printf("};\n") > sysnames
 520                 printf("};\n") > sysun
 521                 printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
 522                 printf("#undef PAD_\n") > sysdcl
 523                 printf("\n#endif /* _KERNEL */\n") > sysdcl
 524                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 525                     > syshdr
 526         } '
 527
 528 cat $sysinc $sysent >> $syssw
 529 cat $sysarg $syscompat $syscompatdcl $syscompatdf12 $syscompatdcldf12 $sysdcl > $sysproto
 530 cat $sysun > $sysunion