bsd/kern/makesyscalls.sh

   1 #! /bin/sh -
   2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
   3 # $FreeBSD: src/sys/kern/makesyscalls.sh,v 1.60 2003/04/01 01:12:24 jeff Exp $
   4 #
   5 # Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   6 #
   7 # @APPLE_LICENSE_HEADER_START@
   8 #
   9 # The contents of this file constitute Original Code as defined in and
  10 # are subject to the Apple Public Source License Version 1.1 (the
  11 # "License").  You may not use this file except in compliance with the
  12 # License.  Please obtain a copy of the License at
  13 # http://www.apple.com/publicsource and read it before using this file.
  14 #
  15 # This Original Code and all software distributed under the License are
  16 # distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17 # EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18 # INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  20 # License for the specific language governing rights and limitations
  21 # under the License.
  22 #
  23 # @APPLE_LICENSE_HEADER_END@
  24 #
  25
  26 set -e
  27
  28 # output files:
  29 syscallnamesfile="syscalls.c"
  30 sysprotofile="../sys/sysproto.h"
  31 sysproto_h=_SYS_SYSPROTO_H_
  32 syshdrfile="../sys/syscall.h"
  33 syscall_h=_SYS_SYSCALL_H_
  34 syscalltablefile="init_sysent.c"
  35 syscallprefix="SYS_"
  36 switchname="sysent"
  37 namesname="syscallnames"
  38
  39 # tmp files:
  40 syslegal="sysent.syslegal.$$"
  41 sysent="sysent.switch.$$"
  42 sysinc="sysinc.switch.$$"
  43 sysarg="sysarg.switch.$$"
  44 sysprotoend="sysprotoend.$$"
  45 syscallnamestempfile="syscallnamesfile.$$"
  46 syshdrtempfile="syshdrtempfile.$$"
  47
  48 trap "rm $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile" 0
  49
  50 touch $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile
  51
  52 case $# in
  53     0)  echo "usage: $0 input-file <config-file>" 1>&2
  54         exit 1
  55         ;;
  56 esac
  57
  58 if [ -n "$2" -a -f "$2" ]; then
  59         . $2
  60 fi
  61
  62 sed -e '
  63 s/\$//g
  64 :join
  65         /\\$/{a\
  66
  67         N
  68         s/\\\n//
  69         b join
  70         }
  71 2,${
  72         /^#/!s/\([{}()*,]\)/ \1 /g
  73 }
  74 ' < $1 | awk "
  75         BEGIN {
  76                 syslegal = \"$syslegal\"
  77                 sysprotofile = \"$sysprotofile\"
  78                 sysprotoend = \"$sysprotoend\"
  79                 sysproto_h = \"$sysproto_h\"
  80                 syscall_h = \"$syscall_h\"
  81                 sysent = \"$sysent\"
  82                 syscalltablefile = \"$syscalltablefile\"
  83                 sysinc = \"$sysinc\"
  84                 sysarg = \"$sysarg\"
  85                 syscallnamesfile = \"$syscallnamesfile\"
  86                 syscallnamestempfile = \"$syscallnamestempfile\"
  87                 syshdrfile = \"$syshdrfile\"
  88                 syshdrtempfile = \"$syshdrtempfile\"
  89                 syscallprefix = \"$syscallprefix\"
  90                 switchname = \"$switchname\"
  91                 namesname = \"$namesname\"
  92                 infile = \"$1\"
  93                 "'
  94
  95                 printf "/*\n" > syslegal
  96                 printf " * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.\n" > syslegal
  97                 printf " * \n" > syslegal
  98                 printf " * @APPLE_LICENSE_HEADER_START@ \n" > syslegal
  99                 printf " * \n" > syslegal
 100                 printf " * The contents of this file constitute Original Code as defined in and \n" > syslegal
 101                 printf " * are subject to the Apple Public Source License Version 1.1 (the \n" > syslegal
 102                 printf " * \"License\").  You may not use this file except in compliance with the \n" > syslegal
 103                 printf " * License.  Please obtain a copy of the License at \n" > syslegal
 104                 printf " * http://www.apple.com/publicsource and read it before using this file. \n" > syslegal
 105                 printf " * \n" > syslegal
 106                 printf " * This Original Code and all software distributed under the License are \n" > syslegal
 107                 printf " * distributed on an \"AS IS\" basis, WITHOUT WARRANTY OF ANY KIND, EITHER \n" > syslegal
 108                 printf " * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, \n" > syslegal
 109                 printf " * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, \n" > syslegal
 110                 printf " * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the \n" > syslegal
 111                 printf " * License for the specific language governing rights and limitations \n" > syslegal
 112                 printf " * under the License. \n" > syslegal
 113                 printf " * \n" > syslegal
 114                 printf " * @APPLE_LICENSE_HEADER_END@ \n" > syslegal
 115                 printf " * \n" > syslegal
 116                 printf " * \n" > syslegal
 117                 printf " * System call switch table.\n *\n" > syslegal
 118                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syslegal
 119                 printf " * created from %s\n */\n\n", infile > syslegal
 120         }
 121         NR == 1 {
 122                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 123                 printf "__private_extern__ struct sysent %s[] = {\n",switchname > sysent
 124
 125                 printf "#ifndef %s\n", sysproto_h > sysarg
 126                 printf "#define\t%s\n\n", sysproto_h > sysarg
 127                 printf "#ifndef %s\n", syscall_h > syshdrtempfile
 128                 printf "#define\t%s\n\n", syscall_h > syshdrtempfile
 129                 printf "#include <sys/appleapiopts.h>\n" > syshdrtempfile
 130                 printf "#ifdef __APPLE_API_PRIVATE\n" > syshdrtempfile
 131                 printf "#include <sys/appleapiopts.h>\n" > sysarg
 132                 printf "#include <sys/cdefs.h>\n" > sysarg
 133                 printf "#include <sys/mount_internal.h>\n" > sysarg
 134                 printf "#include <sys/types.h>\n" > sysarg
 135                 printf "#include <sys/sem_internal.h>\n" > sysarg
 136                 printf "#include <sys/semaphore.h>\n" > sysarg
 137                 printf "#include <sys/wait.h>\n" > sysarg
 138                 printf "#include <mach/shared_memory_server.h>\n" > sysarg
 139                 printf "\n#ifdef KERNEL\n" > sysarg
 140                 printf "#ifdef __APPLE_API_PRIVATE\n" > sysarg
 141                 printf "#define\tPAD_(t)\t(sizeof(uint64_t) <= sizeof(t) \\\n " > sysarg
 142                 printf "\t\t? 0 : sizeof(uint64_t) - sizeof(t))\n" > sysarg
 143                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 144                 printf "#define\tPADL_(t)\t0\n" > sysarg
 145                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 146                 printf "#else\n" > sysarg
 147                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 148                 printf "#define\tPADR_(t)\t0\n" > sysarg
 149                 printf "#endif\n" > sysarg
 150                 printf "\n__BEGIN_DECLS\n" > sysarg
 151                 printf "#ifndef __MUNGE_ONCE\n" > sysarg
 152                 printf "#define __MUNGE_ONCE\n" > sysarg
 153                 printf "void munge_w(const void *, void *);  \n" > sysarg
 154                 printf "void munge_ww(const void *, void *);  \n" > sysarg
 155                 printf "void munge_www(const void *, void *);  \n" > sysarg
 156                 printf "void munge_wwww(const void *, void *);  \n" > sysarg
 157                 printf "void munge_wwwww(const void *, void *);  \n" > sysarg
 158                 printf "void munge_wwwwww(const void *, void *);  \n" > sysarg
 159                 printf "void munge_wwwwwww(const void *, void *);  \n" > sysarg
 160                 printf "void munge_wwwwwwww(const void *, void *);  \n" > sysarg
 161                 printf "void munge_wl(const void *, void *);  \n" > sysarg
 162                 printf "void munge_wlw(const void *, void *);  \n" > sysarg
 163                 printf "void munge_wwwl(const void *, void *);  \n" > sysarg
 164                 printf "void munge_wwwlww(const void *, void *); \n" > sysarg
 165                 printf "void munge_wwwwl(const void *, void *);  \n" > sysarg
 166                 printf "void munge_wwwwwl(const void *, void *);  \n" > sysarg
 167                 printf "void munge_wsw(const void *, void *);  \n" > sysarg
 168                 printf "void munge_wws(const void *, void *);  \n" > sysarg
 169                 printf "void munge_wwwsw(const void *, void *);  \n" > sysarg
 170                 printf "#ifdef __ppc__\n" > sysarg
 171                 printf "void munge_d(const void *, void *);  \n" > sysarg
 172                 printf "void munge_dd(const void *, void *);  \n" > sysarg
 173                 printf "void munge_ddd(const void *, void *);  \n" > sysarg
 174                 printf "void munge_dddd(const void *, void *);  \n" > sysarg
 175                 printf "void munge_ddddd(const void *, void *);  \n" > sysarg
 176                 printf "void munge_dddddd(const void *, void *);  \n" > sysarg
 177                 printf "void munge_ddddddd(const void *, void *);  \n" > sysarg
 178                 printf "void munge_dddddddd(const void *, void *);  \n" > sysarg
 179                 printf "#else \n" > sysarg
 180                 printf "#define munge_d  NULL \n" > sysarg
 181                 printf "#define munge_dd  NULL \n" > sysarg
 182                 printf "#define munge_ddd  NULL \n" > sysarg
 183                 printf "#define munge_dddd  NULL \n" > sysarg
 184                 printf "#define munge_ddddd  NULL \n" > sysarg
 185                 printf "#define munge_dddddd  NULL \n" > sysarg
 186                 printf "#define munge_ddddddd  NULL \n" > sysarg
 187                 printf "#define munge_dddddddd  NULL \n" > sysarg
 188                 printf "#endif // __ppc__\n" > sysarg
 189                 printf "#endif /* !__MUNGE_ONCE */\n" > sysarg
 190
 191                 printf "\n" > sysarg
 192
 193                 printf "const char *%s[] = {\n", namesname > syscallnamestempfile
 194                 next
 195         }
 196         NF == 0 || $1 ~ /^;/ {
 197                 next
 198         }
 199         $1 ~ /^#[       ]*include/ {
 200                 print > sysinc
 201                 next
 202         }
 203         $1 ~ /^#[       ]*if/ {
 204                 print > sysent
 205                 print > sysarg
 206                 print > syscallnamestempfile
 207                 print > syshdrtempfile
 208                 print > sysprotoend
 209                 savesyscall = syscall
 210                 next
 211         }
 212         $1 ~ /^#[       ]*else/ {
 213                 print > sysent
 214                 print > sysarg
 215                 print > syscallnamestempfile
 216                 print > syshdrtempfile
 217                 print > sysprotoend
 218                 syscall = savesyscall
 219                 next
 220         }
 221         $1 ~ /^#/ {
 222                 print > sysent
 223                 print > sysarg
 224                 print > syscallnamestempfile
 225                 print > syshdrtempfile
 226                 print > sysprotoend
 227                 next
 228         }
 229         syscall != $1 {
 230                 printf "%s: line %d: syscall number out of sync at %d\n",
 231                     infile, NR, syscall
 232                 printf "line is:\n"
 233                 print
 234                 exit 1
 235         }
 236         function align_comment(linesize, location, thefile) {
 237                 printf(" ") > thefile
 238                 while (linesize < location) {
 239                         printf(" ") > thefile
 240                         linesize++
 241                 }
 242         }
 243         function parserr(was, wanted) {
 244                 printf "%s: line %d: unexpected %s (expected %s)\n",
 245                     infile, NR, was, wanted
 246                 exit 1
 247         }
 248
 249         function parseline() {
 250                 funcname = ""
 251                 current_field = 5
 252                 args_start = 0
 253                 args_end = 0
 254                 comments_start = 0
 255                 comments_end = 0
 256                 argc = 0
 257                 argssize = "0"
 258                 additional_comments = " "
 259
 260                 # find start and end of call name and arguments
 261                 if ($current_field != "{")
 262                         parserr($current_field, "{")
 263                 args_start = current_field
 264                 current_field++
 265                 while (current_field <= NF) {
 266                         if ($current_field == "}") {
 267                                 args_end = current_field
 268                                 break
 269                         }
 270                         current_field++
 271                 }
 272                 if (args_end == 0) {
 273                         printf "%s: line %d: invalid call name and arguments\n",
 274                         infile, NR
 275                         exit 1
 276                 }
 277
 278                 # find start and end of optional comments
 279                 current_field++
 280                 if (current_field < NF && $current_field == "{") {
 281                         comments_start = current_field
 282                         while (current_field <= NF) {
 283                                 if ($current_field == "}") {
 284                                         comments_end = current_field
 285                                         break
 286                                 }
 287                                 current_field++
 288                         }
 289                         if (comments_end == 0) {
 290                                 printf "%s: line %d: invalid comments \n",
 291                                         infile, NR
 292                                 exit 1
 293                         }
 294                 }
 295
 296                 if ($args_end != "}")
 297                         parserr($args_end, "}")
 298                 args_end--
 299                 if ($args_end != ";")
 300                         parserr($args_end, ";")
 301                 args_end--
 302                 if ($args_end != ")")
 303                         parserr($args_end, ")")
 304                 args_end--
 305
 306                 # extract additional comments
 307                 if (comments_start != 0) {
 308                         current_field = comments_start + 1
 309                         while (current_field < comments_end) {
 310                                 additional_comments = additional_comments $current_field " "
 311                                 current_field++
 312                         }
 313                 }
 314
 315                 # get function return type
 316                 current_field = args_start + 1
 317                 returntype = $current_field
 318
 319                 # get function name and set up to get arguments
 320                 current_field++
 321                 funcname = $current_field
 322                 argalias = funcname "_args"
 323                 current_field++ # bump past function name
 324
 325                 if ($current_field != "(")
 326                         parserr($current_field, "(")
 327                 current_field++
 328
 329                 if (current_field == args_end) {
 330                         if ($current_field != "void")
 331                                 parserr($current_field, "argument definition")
 332                         return
 333                 }
 334
 335                 # extract argument types and names
 336                 while (current_field <= args_end) {
 337                         argc++
 338                         argtype[argc]=""
 339                         ext_argtype[argc]=""
 340                         oldf=""
 341                         while (current_field < args_end && $(current_field + 1) != ",") {
 342                                 if (argtype[argc] != "" && oldf != "*") {
 343                                         argtype[argc] = argtype[argc] " ";
 344                                 }
 345                                 argtype[argc] = argtype[argc] $current_field;
 346                                 ext_argtype[argc] = argtype[argc];
 347                                 oldf = $current_field;
 348                                 current_field++
 349                         }
 350                         if (argtype[argc] == "")
 351                                 parserr($current_field, "argument definition")
 352                         argname[argc] = $current_field;
 353                         current_field += 2;                     # skip name, and any comma
 354                 }
 355                 if (argc > 8) {
 356                         printf "%s: line %d: too many arguments!\n", infile, NR
 357                         exit 1
 358                 }
 359                 if (argc != 0)
 360                         argssize = "AC(" argalias ")"
 361         }
 362
 363         {
 364                 add_sysent_entry = 1
 365                 add_sysnames_entry = 1
 366                 add_sysheader_entry = 1
 367                 add_sysproto_entry = 1
 368                 add_64bit_unsafe = 0
 369                 add_64bit_fakesafe = 0
 370                 add_cancel_enable = "0"
 371
 372                 if ($2 == "NONE") {
 373                         add_cancel_enable = "_SYSCALL_CANCEL_NONE"
 374                 }
 375                 else if ($2 == "PRE") {
 376                         add_cancel_enable = "_SYSCALL_CANCEL_PRE"
 377                 }
 378                 else if ($2 == "POST") {
 379                         add_cancel_enable = "_SYSCALL_CANCEL_POST"
 380                 }
 381                 else {
 382                         printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 383                         exit 1
 384
 385                 }
 386
 387                 if ($3 == "KERN") {
 388                         my_funnel = "KERNEL_FUNNEL"
 389                 }
 390                 else if ($3 == "NONE") {
 391                         my_funnel = "NO_FUNNEL"
 392                 }
 393                 else {
 394                         printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 395                         exit 1
 396                 }
 397
 398                 if ($4 != "ALL" && $4 != "UALL") {
 399                         files_keyword_OK = 0
 400                         add_sysent_entry = 0
 401                         add_sysnames_entry = 0
 402                         add_sysheader_entry = 0
 403                         add_sysproto_entry = 0
 404
 405                         if (match($4, "[T]") != 0) {
 406                                 add_sysent_entry = 1
 407                                 files_keyword_OK = 1
 408                         }
 409                         if (match($4, "[N]") != 0) {
 410                                 add_sysnames_entry = 1
 411                                 files_keyword_OK = 1
 412                         }
 413                         if (match($4, "[H]") != 0) {
 414                                 add_sysheader_entry = 1
 415                                 files_keyword_OK = 1
 416                         }
 417                         if (match($4, "[P]") != 0) {
 418                                 add_sysproto_entry = 1
 419                                 files_keyword_OK = 1
 420                         }
 421                         if (match($4, "[U]") != 0) {
 422                                 add_64bit_unsafe = 1
 423                         }
 424                         if (match($4, "[F]") != 0) {
 425                                 add_64bit_fakesafe = 1
 426                         }
 427
 428                         if (files_keyword_OK == 0) {
 429                                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $4
 430                                 exit 1
 431                         }
 432                 }
 433                 else if ($4 == "UALL") {
 434                         add_64bit_unsafe = 1;
 435                 }
 436
 437
 438                 parseline()
 439
 440                 # output function argument structures to sysproto.h and build the
 441                 # name of the appropriate argument mungers
 442                 munge32 = "NULL"
 443                 munge64 = "NULL"
 444                 if (funcname != "nosys" || (syscall == 0 && funcname == "nosys")) {
 445                         if (argc != 0) {
 446                                 if (add_sysproto_entry == 1) {
 447                                         printf("struct %s {\n", argalias) > sysarg
 448                                 }
 449                                 munge32 = "munge_"
 450                                 munge64 = "munge_"
 451                                 for (i = 1; i <= argc; i++) {
 452                                         # Build name of argument munger.
 453                                         # We account for all sys call argument types here.
 454                                         # This is where you add any new types.  With LP64 support
 455                                         # each argument consumes 64-bits.
 456                                         # see .../xnu/bsd/dev/ppc/munge.s for munge argument types.
 457                                         if (argtype[i] == "long") {
 458                                                 if (add_64bit_unsafe == 0)
 459                                                         ext_argtype[i] = "user_long_t";
 460                                                 munge32 = munge32 "s"
 461                                                 munge64 = munge64 "d"
 462                                         }
 463                                         else if (argtype[i] == "u_long") {
 464                                                 if (add_64bit_unsafe == 0)
 465                                                         ext_argtype[i] = "user_ulong_t";
 466                                                 munge32 = munge32 "w"
 467                                                 munge64 = munge64 "d"
 468                                         }
 469                                         else if (argtype[i] == "size_t") {
 470                                                 if (add_64bit_unsafe == 0)
 471                                                         ext_argtype[i] = "user_size_t";
 472                                                 munge32 = munge32 "w"
 473                                                 munge64 = munge64 "d"
 474                                         }
 475                                         else if (argtype[i] == "ssize_t") {
 476                                                 if (add_64bit_unsafe == 0)
 477                                                         ext_argtype[i] = "user_ssize_t";
 478                                                 munge32 = munge32 "s"
 479                                                 munge64 = munge64 "d"
 480                                         }
 481                                         else if (argtype[i] == "user_ssize_t" || argtype[i] == "user_long_t") {
 482                                                 munge32 = munge32 "s"
 483                                                 munge64 = munge64 "d"
 484                                         }
 485                                         else if (argtype[i] == "user_addr_t" || argtype[i] == "user_size_t" ||
 486                                                 argtype[i] == "user_ulong_t") {
 487                                                 munge32 = munge32 "w"
 488                                                 munge64 = munge64 "d"
 489                                         }
 490                                         else if (argtype[i] == "caddr_t" || argtype[i] == "semun_t" ||
 491                                                 match(argtype[i], "[\*]") != 0) {
 492                                                 if (add_64bit_unsafe == 0)
 493                                                         ext_argtype[i] = "user_addr_t";
 494                                                 munge32 = munge32 "w"
 495                                                 munge64 = munge64 "d"
 496                                         }
 497                                         else if (argtype[i] == "int" || argtype[i] == "u_int" ||
 498                                                          argtype[i] == "uid_t" || argtype[i] == "pid_t" ||
 499                                                          argtype[i] == "id_t" || argtype[i] == "idtype_t" ||
 500                                                          argtype[i] == "socklen_t" || argtype[i] == "uint32_t" || argtype[i] == "int32_t" ||
 501                                                          argtype[i] == "sigset_t" || argtype[i] == "gid_t" ||
 502                                                          argtype[i] == "mode_t" || argtype[i] == "key_t" || argtype[i] == "time_t") {
 503                                                 munge32 = munge32 "w"
 504                                                 munge64 = munge64 "d"
 505                                         }
 506                                         else if (argtype[i] == "off_t" || argtype[i] == "int64_t" || argtype[i] == "uint64_t") {
 507                                                 munge32 = munge32 "l"
 508                                                 munge64 = munge64 "d"
 509                                         }
 510                                         else {
 511                                                 printf "%s: line %d: invalid type \"%s\" \n",
 512                                                         infile, NR, argtype[i]
 513                                                 printf "You need to add \"%s\" into the type checking code. \n",
 514                                                          argtype[i]
 515                                                 exit 1
 516                                         }
 517                                         if (add_sysproto_entry == 1) {
 518                                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 519                                                         "%s %s; char %s_r_[PADR_(%s)];\n",
 520                                                         argname[i], ext_argtype[i],
 521                                                         ext_argtype[i], argname[i],
 522                                                         argname[i], ext_argtype[i]) > sysarg
 523                                         }
 524                                 }
 525                                 if (add_sysproto_entry == 1) {
 526                                         printf("};\n") > sysarg
 527                                 }
 528                         }
 529                         else if (add_sysproto_entry == 1) {
 530                                 printf("struct %s {\n\tregister_t dummy;\n};\n", argalias) > sysarg
 531                         }
 532                 }
 533
 534                 # output to init_sysent.c
 535                 tempname = funcname
 536                 if (add_sysent_entry == 0) {
 537                         argssize = "0"
 538                         munge32 = "NULL"
 539                         munge64 = "NULL"
 540                         munge_ret = "_SYSCALL_RET_NONE"
 541                         tempname = "nosys"
 542                 }
 543                 else {
 544                         # figure out which return value type to munge
 545                         if (returntype == "user_addr_t") {
 546                                 munge_ret = "_SYSCALL_RET_ADDR_T"
 547                         }
 548                         else if (returntype == "user_ssize_t") {
 549                                 munge_ret = "_SYSCALL_RET_SSIZE_T"
 550                         }
 551                         else if (returntype == "user_size_t") {
 552                                 munge_ret = "_SYSCALL_RET_SIZE_T"
 553                         }
 554                         else if (returntype == "int") {
 555                                 munge_ret = "_SYSCALL_RET_INT_T"
 556                         }
 557                         else if (returntype == "u_int") {
 558                                 munge_ret = "_SYSCALL_RET_UINT_T"
 559                         }
 560                         else if (returntype == "off_t") {
 561                                 munge_ret = "_SYSCALL_RET_OFF_T"
 562                         }
 563                         else if (returntype == "void") {
 564                                 munge_ret = "_SYSCALL_RET_NONE"
 565                         }
 566                         else {
 567                                 printf "%s: line %d: invalid return type \"%s\" \n",
 568                                         infile, NR, returntype
 569                                 printf "You need to add \"%s\" into the return type checking code. \n",
 570                                          returntype
 571                                 exit 1
 572                         }
 573                 }
 574
 575                 if (add_64bit_unsafe == 1  && add_64bit_fakesafe == 0)
 576                         my_funnel = my_funnel "|UNSAFE_64BIT";
 577
 578                 printf("\t{%s, %s, %s, \(sy_call_t *\)%s, %s, %s, %s},",
 579                                 argssize, add_cancel_enable, my_funnel, tempname, munge32, munge64, munge_ret) > sysent
 580                 linesize = length(argssize) + length(add_cancel_enable) + length(my_funnel) + length(tempname) + \
 581                                 length(munge32) + length(munge64) + length(munge_ret) + 28
 582                 align_comment(linesize, 88, sysent)
 583                 printf("/* %d = %s%s*/\n", syscall, funcname, additional_comments) > sysent
 584
 585                 # output to syscalls.c
 586                 if (add_sysnames_entry == 1) {
 587                         tempname = funcname
 588                         if (funcname == "nosys") {
 589                                 if (syscall == 0)
 590                                         tempname = "syscall"
 591                                 else
 592                                         tempname = "#" syscall
 593                         }
 594                         printf("\t\"%s\", ", tempname) > syscallnamestempfile
 595                         linesize = length(tempname) + 8
 596                         align_comment(linesize, 25, syscallnamestempfile)
 597                         if (substr(tempname,1,1) == "#") {
 598                                 printf("/* %d =%s*/\n", syscall, additional_comments) > syscallnamestempfile
 599                         }
 600                         else {
 601                                 printf("/* %d = %s%s*/\n", syscall, tempname, additional_comments) > syscallnamestempfile
 602                         }
 603                 }
 604
 605                 # output to syscalls.h
 606                 if (add_sysheader_entry == 1) {
 607                         tempname = funcname
 608                         if (syscall == 0) {
 609                                 tempname = "syscall"
 610                         }
 611                         if (tempname != "nosys") {
 612                                 printf("#define\t%s%s", syscallprefix, tempname) > syshdrtempfile
 613                                 linesize = length(syscallprefix) + length(tempname) + 12
 614                                 align_comment(linesize, 30, syshdrtempfile)
 615                                 printf("%d\n", syscall) > syshdrtempfile
 616                                 # special case for gettimeofday on ppc - cctools project uses old name
 617                                 if (tempname == "ppc_gettimeofday") {
 618                                         printf("#define\t%s%s", syscallprefix, "gettimeofday") > syshdrtempfile
 619                                         linesize = length(syscallprefix) + length(tempname) + 12
 620                                         align_comment(linesize, 30, syshdrtempfile)
 621                                         printf("%d\n", syscall) > syshdrtempfile
 622                                 }
 623                         }
 624                         else {
 625                                 printf("\t\t\t/* %d %s*/\n", syscall, additional_comments) > syshdrtempfile
 626                         }
 627                 }
 628
 629                 # output function prototypes to sysproto.h
 630                 if (add_sysproto_entry == 1) {
 631                         if (funcname =="exit") {
 632                                 printf("void %s(struct proc *, struct %s *, int *);\n",
 633                                                 funcname, argalias) > sysprotoend
 634                         }
 635                         else if (funcname != "nosys" || (syscall == 0 && funcname == "nosys")) {
 636                                 printf("int %s(struct proc *, struct %s *, %s *);\n",
 637                                                 funcname, argalias, returntype) > sysprotoend
 638                         }
 639                 }
 640
 641                 syscall++
 642                 next
 643         }
 644
 645         END {
 646                 printf "#define AC(name) (sizeof(struct name) / sizeof(uint64_t))\n" > sysinc
 647                 printf "\n" > sysinc
 648
 649                 printf("\n__END_DECLS\n") > sysprotoend
 650                 printf("#undef PAD_\n") > sysprotoend
 651                 printf("#undef PADL_\n") > sysprotoend
 652                 printf("#undef PADR_\n") > sysprotoend
 653                 printf "\n#endif /* __APPLE_API_PRIVATE */\n" > sysprotoend
 654                 printf "#endif /* KERNEL */\n" > sysprotoend
 655                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 656
 657                 printf("};\n") > sysent
 658                 printf("int     nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
 659
 660                 printf("};\n") > syscallnamestempfile
 661                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 662                     > syshdrtempfile
 663                 printf("\n#endif /* __APPLE_API_PRIVATE */\n") > syshdrtempfile
 664                 printf("#endif /* !%s */\n", syscall_h) > syshdrtempfile
 665         } '
 666
 667 cat $syslegal $sysinc $sysent > $syscalltablefile
 668 cat $syslegal $sysarg $sysprotoend > $sysprotofile
 669 cat $syslegal $syscallnamestempfile > $syscallnamesfile
 670 cat $syslegal $syshdrtempfile > $syshdrfile