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) 2004-2008 Apple Inc. All rights reserved.
   6 #
   7 # @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   8 #
   9 # This file contains Original Code and/or Modifications of Original Code
  10 # as defined in and that are subject to the Apple Public Source License
  11 # Version 2.0 (the 'License'). You may not use this file except in
  12 # compliance with the License. Please obtain a copy of the License at
  13 # http://www.opensource.apple.com/apsl/ and read it before using this
  14 # file.
  15 #
  16 # The Original Code and all software distributed under the License are
  17 # distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  18 # EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  19 # INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  20 # FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  21 # Please see the License for the specific language governing rights and
  22 # limitations under the License.
  23 #
  24 # @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  25 #
  26
  27 set -e
  28
  29 input_file="" # first argument
  30
  31 # output type:
  32 output_syscallnamesfile=0
  33 output_sysprotofile=0
  34 output_syshdrfile=0
  35 output_syscalltablefile=0
  36 output_auditevfile=0
  37
  38 # output files:
  39 syscallnamesfile="syscalls.c"
  40 sysprotofile="sysproto.h"
  41 sysproto_h=_SYS_SYSPROTO_H_
  42 syshdrfile="syscall.h"
  43 syscall_h=_SYS_SYSCALL_H_
  44 syscalltablefile="init_sysent.c"
  45 auditevfile="audit_kevents.c"
  46 syscallprefix="SYS_"
  47 switchname="sysent"
  48 namesname="syscallnames"
  49
  50 # tmp files:
  51 syslegal="sysent.syslegal.$$"
  52 sysent="sysent.switch.$$"
  53 sysinc="sysinc.switch.$$"
  54 sysarg="sysarg.switch.$$"
  55 sysprotoend="sysprotoend.$$"
  56 syscallnamestempfile="syscallnamesfile.$$"
  57 syshdrtempfile="syshdrtempfile.$$"
  58 audittempfile="audittempfile.$$"
  59
  60 trap "rm $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile" 0
  61
  62 touch $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile
  63
  64 case $# in
  65     0)
  66         echo "usage: $0 input-file [<names|proto|header|table|audit> [<config-file>]]" 1>&2
  67         exit 1
  68         ;;
  69 esac
  70
  71 input_file="$1"
  72 shift
  73
  74 if [ -n "$1" ]; then
  75     case $1 in
  76         names)
  77             output_syscallnamesfile=1
  78             ;;
  79         proto)
  80             output_sysprotofile=1
  81             ;;
  82         header)
  83             output_syshdrfile=1
  84             ;;
  85         table)
  86             output_syscalltablefile=1
  87             ;;
  88         audit)
  89             output_auditevfile=1
  90             ;;
  91     esac
  92     shift;
  93 else
  94     output_syscallnamesfile=1
  95     output_sysprotofile=1
  96     output_syshdrfile=1
  97     output_syscalltablefile=1
  98     output_auditevfile=1
  99 fi
 100
 101 if [ -n "$1" -a -f "$1" ]; then
 102         . $1
 103 fi
 104
 105
 106
 107 sed -e '
 108 s/\$//g
 109 :join
 110         /\\$/{a\
 111
 112         N
 113         s/\\\n//
 114         b join
 115         }
 116 2,${
 117         /^#/!s/\([{}()*,;]\)/ \1 /g
 118 }
 119 ' < "$input_file" | awk "
 120         BEGIN {
 121                 syslegal = \"$syslegal\"
 122                 sysprotofile = \"$sysprotofile\"
 123                 sysprotoend = \"$sysprotoend\"
 124                 sysproto_h = \"$sysproto_h\"
 125                 syscall_h = \"$syscall_h\"
 126                 sysent = \"$sysent\"
 127                 syscalltablefile = \"$syscalltablefile\"
 128                 sysinc = \"$sysinc\"
 129                 sysarg = \"$sysarg\"
 130                 syscallnamesfile = \"$syscallnamesfile\"
 131                 syscallnamestempfile = \"$syscallnamestempfile\"
 132                 syshdrfile = \"$syshdrfile\"
 133                 syshdrtempfile = \"$syshdrtempfile\"
 134                 audittempfile = \"$audittempfile\"
 135                 syscallprefix = \"$syscallprefix\"
 136                 switchname = \"$switchname\"
 137                 namesname = \"$namesname\"
 138                 infile = \"$input_file\"
 139                 "'
 140
 141                 printf "/*\n" > syslegal
 142                 printf " * Copyright (c) 2004-2008 Apple Inc. All rights reserved.\n" > syslegal
 143                 printf " * \n" > syslegal
 144                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_START@\n" > syslegal
 145                 printf " * \n" > syslegal
 146                 printf " * This file contains Original Code and/or Modifications of Original Code\n" > syslegal
 147                 printf " * as defined in and that are subject to the Apple Public Source License\n" > syslegal
 148                 printf " * Version 2.0 (the \047License\047). You may not use this file except in\n" > syslegal
 149                 printf " * compliance with the License. The rights granted to you under the License\n" > syslegal
 150                 printf " * may not be used to create, or enable the creation or redistribution of,\n" > syslegal
 151                 printf " * unlawful or unlicensed copies of an Apple operating system, or to\n" > syslegal
 152                 printf " * circumvent, violate, or enable the circumvention or violation of, any\n" > syslegal
 153                 printf " * terms of an Apple operating system software license agreement.\n" > syslegal
 154                 printf " * \n" > syslegal
 155                 printf " * Please obtain a copy of the License at\n" > syslegal
 156                 printf " * http://www.opensource.apple.com/apsl/ and read it before using this file.\n" > syslegal
 157                 printf " * \n" > syslegal
 158                 printf " * The Original Code and all software distributed under the License are\n" > syslegal
 159                 printf " * distributed on an \047AS IS\047 basis, WITHOUT WARRANTY OF ANY KIND, EITHER\n" > syslegal
 160                 printf " * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,\n" > syslegal
 161                 printf " * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,\n" > syslegal
 162                 printf " * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.\n" > syslegal
 163                 printf " * Please see the License for the specific language governing rights and\n" > syslegal
 164                 printf " * limitations under the License.\n" > syslegal
 165                 printf " * \n" > syslegal
 166                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_END@\n" > syslegal
 167                 printf " * \n" > syslegal
 168                 printf " * \n" > syslegal
 169                 printf " * System call switch table.\n *\n" > syslegal
 170                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syslegal
 171                 printf " * created from %s\n */\n\n", infile > syslegal
 172         }
 173         NR == 1 {
 174                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 175                 printf "__private_extern__ const struct sysent %s[] = {\n",switchname > sysent
 176
 177                 printf "#ifndef %s\n", sysproto_h > sysarg
 178                 printf "#define\t%s\n\n", sysproto_h > sysarg
 179                 printf "#ifndef %s\n", syscall_h > syshdrtempfile
 180                 printf "#define\t%s\n\n", syscall_h > syshdrtempfile
 181                 printf "#include <sys/appleapiopts.h>\n" > syshdrtempfile
 182                 printf "#ifdef __APPLE_API_PRIVATE\n" > syshdrtempfile
 183                 printf "#include <sys/appleapiopts.h>\n" > sysarg
 184                 printf "#include <sys/cdefs.h>\n" > sysarg
 185                 printf "#include <sys/mount_internal.h>\n" > sysarg
 186                 printf "#include <sys/types.h>\n" > sysarg
 187                 printf "#include <sys/sem_internal.h>\n" > sysarg
 188                 printf "#include <sys/semaphore.h>\n" > sysarg
 189                 printf "#include <sys/wait.h>\n" > sysarg
 190                 printf "#include <mach/shared_region.h>\n" > sysarg
 191                 printf "\n#ifdef KERNEL\n" > sysarg
 192                 printf "#ifdef __APPLE_API_PRIVATE\n" > sysarg
 193                 printf "/*\n" > sysarg
 194                 printf " * The kernel may support multiple userspace ABIs, and must use\n" > sysarg
 195                 printf " * argument structures with elements large enough for any of them.\n" > sysarg
 196                 printf "*/\n" > sysarg
 197                 printf "\n" > sysarg
 198                 printf "#if CONFIG_REQUIRES_U32_MUNGING\n" > sysarg
 199                 printf "#define\tPAD_(t)\t(sizeof(uint64_t) <= sizeof(t) \\\n " > sysarg
 200                 printf "\t\t? 0 : sizeof(uint64_t) - sizeof(t))\n" > sysarg
 201                 printf "#else\n" > sysarg
 202                 printf "#define\tPAD_(t)\t(sizeof(uint32_t) <= sizeof(t) \\\n" > sysarg
 203                 printf "                ? 0 : sizeof(uint32_t) - sizeof(t))\n" > sysarg
 204                 printf "#endif\n" > sysarg
 205                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 206                 printf "#define\tPADL_(t)\t0\n" > sysarg
 207                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 208                 printf "#else\n" > sysarg
 209                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 210                 printf "#define\tPADR_(t)\t0\n" > sysarg
 211                 printf "#endif\n" > sysarg
 212                 printf "\n__BEGIN_DECLS\n" > sysarg
 213                 printf "#include <sys/munge.h>\n" > sysarg
 214
 215                 printf "\n" > sysarg
 216
 217                 printf "const char *%s[] = {\n", namesname > syscallnamestempfile
 218
 219                 printf "#include <sys/param.h>\n" > audittempfile
 220                 printf "#include <sys/types.h>\n\n" > audittempfile
 221                 printf "#include <bsm/audit.h>\n" > audittempfile
 222                 printf "#include <bsm/audit_kevents.h>\n\n" > audittempfile
 223                 printf "#if CONFIG_AUDIT\n\n" > audittempfile
 224                 printf "au_event_t sys_au_event[] = {\n" > audittempfile
 225                 next
 226         }
 227         NF == 0 || $1 ~ /^;/ {
 228                 next
 229         }
 230         $1 ~ /^#[       ]*include/ {
 231                 print > sysinc
 232                 next
 233         }
 234         $1 ~ /^#[       ]*if/ {
 235                 print > sysent
 236                 print > sysarg
 237                 print > syscallnamestempfile
 238                 print > sysprotoend
 239                 print > audittempfile
 240                 savesyscall = syscall_num
 241                 skip_for_header = 0
 242                 next
 243         }
 244         $1 ~ /^#[       ]*else/ {
 245                 print > sysent
 246                 print > sysarg
 247                 print > syscallnamestempfile
 248                 print > sysprotoend
 249                 print > audittempfile
 250                 syscall_num = savesyscall
 251                 skip_for_header = 1
 252                 next
 253         }
 254         $1 ~ /^#/ {
 255                 print > sysent
 256                 print > sysarg
 257                 print > syscallnamestempfile
 258                 print > sysprotoend
 259                 print > audittempfile
 260                 skip_for_header = 0
 261                 next
 262         }
 263         syscall_num != $1 {
 264                 printf "%s: line %d: syscall number out of sync at %d\n",
 265                     infile, NR, syscall_num
 266                 printf "line is:\n"
 267                 print
 268                 exit 1
 269         }
 270         function align_comment(linesize, location, thefile) {
 271                 printf(" ") > thefile
 272                 while (linesize < location) {
 273                         printf(" ") > thefile
 274                         linesize++
 275                 }
 276         }
 277         function parserr(was, wanted) {
 278                 printf "%s: line %d: unexpected %s (expected %s)\n",
 279                     infile, NR, was, wanted
 280                 exit 1
 281         }
 282
 283         function parseline() {
 284                 funcname = ""
 285                 current_field = 4       # skip number, audit event, type
 286                 args_start = 0
 287                 args_end = 0
 288                 comments_start = 0
 289                 comments_end = 0
 290                 argc = 0
 291                 argssize = "0"
 292                 additional_comments = " "
 293
 294                 # find start and end of call name and arguments
 295                 if ($current_field != "{")
 296                         parserr($current_field, "{")
 297                 args_start = current_field
 298                 current_field++
 299                 while (current_field <= NF) {
 300                         if ($current_field == "}") {
 301                                 args_end = current_field
 302                                 break
 303                         }
 304                         current_field++
 305                 }
 306                 if (args_end == 0) {
 307                         printf "%s: line %d: invalid call name and arguments\n",
 308                         infile, NR
 309                         exit 1
 310                 }
 311
 312                 # find start and end of optional comments
 313                 current_field++
 314                 if (current_field < NF && $current_field == "{") {
 315                         comments_start = current_field
 316                         while (current_field <= NF) {
 317                                 if ($current_field == "}") {
 318                                         comments_end = current_field
 319                                         break
 320                                 }
 321                                 current_field++
 322                         }
 323                         if (comments_end == 0) {
 324                                 printf "%s: line %d: invalid comments \n",
 325                                         infile, NR
 326                                 exit 1
 327                         }
 328                 }
 329
 330                 if ($args_end != "}")
 331                         parserr($args_end, "}")
 332                 args_end--
 333                 if ($args_end != ";")
 334                         parserr($args_end, ";")
 335                 args_end--
 336
 337                 # skip any NO_SYSCALL_STUB qualifier
 338                 if ($args_end == "NO_SYSCALL_STUB")
 339                         args_end--
 340
 341                 if ($args_end != ")")
 342                         parserr($args_end, ")")
 343                 args_end--
 344
 345                 # extract additional comments
 346                 if (comments_start != 0) {
 347                         current_field = comments_start + 1
 348                         while (current_field < comments_end) {
 349                                 additional_comments = additional_comments $current_field " "
 350                                 current_field++
 351                         }
 352                 }
 353
 354                 # get function return type
 355                 current_field = args_start + 1
 356                 returntype = $current_field
 357
 358                 # get function name and set up to get arguments
 359                 current_field++
 360                 funcname = $current_field
 361                 argalias = funcname "_args"
 362                 current_field++ # bump past function name
 363
 364                 if ($current_field != "(")
 365                         parserr($current_field, "(")
 366                 current_field++
 367
 368                 if (current_field == args_end) {
 369                         if ($current_field != "void")
 370                                 parserr($current_field, "argument definition")
 371                         return
 372                 }
 373
 374                 # extract argument types and names
 375                 while (current_field <= args_end) {
 376                         argc++
 377                         argtype[argc]=""
 378                         ext_argtype[argc]=""
 379                         oldf=""
 380                         while (current_field < args_end && $(current_field + 1) != ",") {
 381                                 if (argtype[argc] != "" && oldf != "*") {
 382                                         argtype[argc] = argtype[argc] " ";
 383                                 }
 384                                 argtype[argc] = argtype[argc] $current_field;
 385                                 ext_argtype[argc] = argtype[argc];
 386                                 oldf = $current_field;
 387                                 current_field++
 388                         }
 389                         if (argtype[argc] == "")
 390                                 parserr($current_field, "argument definition")
 391                         argname[argc] = $current_field;
 392                         current_field += 2;                     # skip name, and any comma
 393                 }
 394                 if (argc > 8) {
 395                         printf "%s: line %d: too many arguments!\n", infile, NR
 396                         exit 1
 397                 }
 398                 if (argc != 0)
 399                         argssize = "AC(" argalias ")"
 400         }
 401
 402         {
 403                 auditev = $2;
 404         }
 405
 406         {
 407                 add_sysent_entry = 1
 408                 add_sysnames_entry = 1
 409                 add_sysheader_entry = 1
 410                 add_sysproto_entry = 1
 411
 412
 413                 if ($3 != "ALL") {
 414                         files_keyword_OK = 0
 415                         add_sysent_entry = 0
 416                         add_sysnames_entry = 0
 417                         add_sysheader_entry = 0
 418                         add_sysproto_entry = 0
 419
 420                         if (match($3, "[T]") != 0) {
 421                                 add_sysent_entry = 1
 422                                 files_keyword_OK = 1
 423                         }
 424                         if (match($3, "[N]") != 0) {
 425                                 add_sysnames_entry = 1
 426                                 files_keyword_OK = 1
 427                         }
 428                         if (match($3, "[H]") != 0) {
 429                                 add_sysheader_entry = 1
 430                                 files_keyword_OK = 1
 431                         }
 432                         if (match($3, "[P]") != 0) {
 433                                 add_sysproto_entry = 1
 434                                 files_keyword_OK = 1
 435                         }
 436
 437                         if (files_keyword_OK == 0) {
 438                                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 439                                 exit 1
 440                         }
 441                 }
 442
 443
 444                 parseline()
 445
 446                 # output function argument structures to sysproto.h and build the
 447                 # name of the appropriate argument mungers
 448                 munge32 = "NULL"
 449                 size32 = 0
 450
 451                 if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 452                         if (argc != 0) {
 453                                 if (add_sysproto_entry == 1) {
 454                                         printf("struct %s {\n", argalias) > sysarg
 455                                 }
 456                                 munge32 = "munge_"
 457                                 for (i = 1; i <= argc; i++) {
 458                                         # Build name of argument munger.
 459                                         # We account for all sys call argument types here.
 460                                         # This is where you add any new types.  With LP64 support
 461                                         # each argument consumes 64-bits.
 462                                         # see .../xnu/bsd/dev/munge.c for munge argument types.
 463                                         if (argtype[i] == "long") {
 464                                                 ext_argtype[i] = "user_long_t";
 465                                                 munge32 = munge32 "s"
 466                                                 size32 += 4
 467                                         }
 468                                         else if (argtype[i] == "u_long") {
 469                                                 ext_argtype[i] = "user_ulong_t";
 470                                                 munge32 = munge32 "w"
 471                                                 size32 += 4
 472                                         }
 473                                         else if (argtype[i] == "size_t") {
 474                                                 ext_argtype[i] = "user_size_t";
 475                                                 munge32 = munge32 "w"
 476                                                 size32 += 4
 477                                         }
 478                                         else if (argtype[i] == "ssize_t") {
 479                                                 ext_argtype[i] = "user_ssize_t";
 480                                                 munge32 = munge32 "s"
 481                                                 size32 += 4
 482                                         }
 483                                         else if (argtype[i] == "user_ssize_t" || argtype[i] == "user_long_t") {
 484                                                 munge32 = munge32 "s"
 485                                                 size32 += 4
 486                                         }
 487                                         else if (argtype[i] == "user_addr_t" || argtype[i] == "user_size_t" ||
 488                                                 argtype[i] == "user_ulong_t") {
 489                                                 munge32 = munge32 "w"
 490                                                 size32 += 4
 491                                         }
 492                                         else if (argtype[i] == "caddr_t" || argtype[i] == "semun_t" ||
 493                                                 argtype[i] == "uuid_t" || match(argtype[i], "[\*]") != 0) {
 494                                                 ext_argtype[i] = "user_addr_t";
 495                                                 munge32 = munge32 "w"
 496                                                 size32 += 4
 497                                         }
 498                                         else if (argtype[i] == "int" || argtype[i] == "u_int" ||
 499                                                          argtype[i] == "uid_t" || argtype[i] == "pid_t" ||
 500                                                          argtype[i] == "id_t" || argtype[i] == "idtype_t" ||
 501                                                          argtype[i] == "socklen_t" || argtype[i] == "uint32_t" || argtype[i] == "int32_t" ||
 502                                                          argtype[i] == "sigset_t" || argtype[i] == "gid_t" || argtype[i] == "unsigned int" ||
 503                                                          argtype[i] == "mode_t" || argtype[i] == "key_t" ||
 504                                                          argtype[i] == "mach_port_name_t" || argtype[i] == "au_asid_t" ||
 505                                                          argtype[i] == "sae_associd_t" || argtype[i] == "sae_connid_t") {
 506                                                 munge32 = munge32 "w"
 507                                                 size32 += 4
 508                                         }
 509                                         else if (argtype[i] == "off_t" || argtype[i] == "int64_t" || argtype[i] == "uint64_t") {
 510                                                 munge32 = munge32 "l"
 511                                                 size32 += 8
 512                                         }
 513                                         else {
 514                                                 printf "%s: line %d: invalid type \"%s\" \n",
 515                                                         infile, NR, argtype[i]
 516                                                 printf "You need to add \"%s\" into the type checking code. \n",
 517                                                          argtype[i]
 518                                                 exit 1
 519                                         }
 520                                         if (add_sysproto_entry == 1) {
 521                                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 522                                                         "%s %s; char %s_r_[PADR_(%s)];\n",
 523                                                         argname[i], ext_argtype[i],
 524                                                         ext_argtype[i], argname[i],
 525                                                         argname[i], ext_argtype[i]) > sysarg
 526                                         }
 527                                 }
 528                                 if (add_sysproto_entry == 1) {
 529                                         printf("};\n") > sysarg
 530                                 }
 531                         }
 532                         else if (add_sysproto_entry == 1) {
 533                                 printf("struct %s {\n\tint32_t dummy;\n};\n", argalias) > sysarg
 534                         }
 535                 }
 536
 537                 # output to init_sysent.c
 538                 tempname = funcname
 539                 if (add_sysent_entry == 0) {
 540                         argssize = "0"
 541                         munge32 = "NULL"
 542                         munge_ret = "_SYSCALL_RET_NONE"
 543                         if (tempname != "enosys") {
 544                                 tempname = "nosys"
 545                         }
 546                 }
 547                 else {
 548                         # figure out which return value type to munge
 549                         if (returntype == "user_addr_t") {
 550                                 munge_ret = "_SYSCALL_RET_ADDR_T"
 551                         }
 552                         else if (returntype == "user_ssize_t") {
 553                                 munge_ret = "_SYSCALL_RET_SSIZE_T"
 554                         }
 555                         else if (returntype == "user_size_t") {
 556                                 munge_ret = "_SYSCALL_RET_SIZE_T"
 557                         }
 558                         else if (returntype == "int") {
 559                                 munge_ret = "_SYSCALL_RET_INT_T"
 560                         }
 561                         else if (returntype == "u_int" || returntype == "mach_port_name_t") {
 562                                 munge_ret = "_SYSCALL_RET_UINT_T"
 563                         }
 564                         else if (returntype == "uint32_t") {
 565                                 munge_ret = "_SYSCALL_RET_UINT_T"
 566                         }
 567                         else if (returntype == "uint64_t") {
 568                                 munge_ret = "_SYSCALL_RET_UINT64_T"
 569                         }
 570                         else if (returntype == "off_t") {
 571                                 munge_ret = "_SYSCALL_RET_OFF_T"
 572                         }
 573                         else if (returntype == "void") {
 574                                 munge_ret = "_SYSCALL_RET_NONE"
 575                         }
 576                         else {
 577                                 printf "%s: line %d: invalid return type \"%s\" \n",
 578                                         infile, NR, returntype
 579                                 printf "You need to add \"%s\" into the return type checking code. \n",
 580                                          returntype
 581                                 exit 1
 582                         }
 583                 }
 584
 585                 printf("#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))\n") > sysent
 586                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s, %s},",
 587                                 tempname, munge32, munge_ret, argssize, size32) > sysent
 588                 linesize = length(tempname) + length(munge32) + \
 589                         length(munge_ret) + length(argssize) + length(size32) + 28
 590                 align_comment(linesize, 88, sysent)
 591                 printf("/* %d = %s%s*/\n", syscall_num, funcname, additional_comments) > sysent
 592                 printf("#else\n") > sysent
 593                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s},\n",
 594                                 tempname, munge_ret, argssize, size32) > sysent
 595                 printf("#endif\n") > sysent
 596
 597                 # output to syscalls.c
 598                 if (add_sysnames_entry == 1) {
 599                         tempname = funcname
 600                         if (funcname == "nosys" || funcname == "enosys") {
 601                                 if (syscall_num == 0)
 602                                         tempname = "syscall"
 603                                 else
 604                                         tempname = "#" syscall_num
 605                         }
 606                         printf("\t\"%s\", ", tempname) > syscallnamestempfile
 607                         linesize = length(tempname) + 8
 608                         align_comment(linesize, 25, syscallnamestempfile)
 609                         if (substr(tempname,1,1) == "#") {
 610                                 printf("/* %d =%s*/\n", syscall_num, additional_comments) > syscallnamestempfile
 611                         }
 612                         else {
 613                                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > syscallnamestempfile
 614                         }
 615                 }
 616
 617                 # output to syscalls.h
 618                 if (add_sysheader_entry == 1) {
 619                         tempname = funcname
 620                         if (syscall_num == 0) {
 621                                 tempname = "syscall"
 622                         }
 623                         if (tempname != "nosys" && tempname != "enosys") {
 624                                 printf("#define\t%s%s", syscallprefix, tempname) > syshdrtempfile
 625                                 linesize = length(syscallprefix) + length(tempname) + 12
 626                                 align_comment(linesize, 30, syshdrtempfile)
 627                                 printf("%d\n", syscall_num) > syshdrtempfile
 628                                 # special case for gettimeofday on ppc - cctools project uses old name
 629                                 if (tempname == "ppc_gettimeofday") {
 630                                         printf("#define\t%s%s", syscallprefix, "gettimeofday") > syshdrtempfile
 631                                         linesize = length(syscallprefix) + length(tempname) + 12
 632                                         align_comment(linesize, 30, syshdrtempfile)
 633                                         printf("%d\n", syscall_num) > syshdrtempfile
 634                                 }
 635                         }
 636                         else if (skip_for_header == 0) {
 637                                 printf("\t\t\t/* %d %s*/\n", syscall_num, additional_comments) > syshdrtempfile
 638                         }
 639                 }
 640
 641                 # output function prototypes to sysproto.h
 642                 if (add_sysproto_entry == 1) {
 643                         if (funcname =="exit") {
 644                                 printf("void %s(struct proc *, struct %s *, int32_t *);\n",
 645                                                 funcname, argalias) > sysprotoend
 646                         }
 647                         else if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 648                                 printf("int %s(struct proc *, struct %s *, %s *);\n",
 649                                                 funcname, argalias, returntype) > sysprotoend
 650                         }
 651                 }
 652
 653                 # output to audit_kevents.c
 654                 printf("\t%s,\t\t", auditev) > audittempfile
 655                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > audittempfile
 656
 657                 syscall_num++
 658                 next
 659         }
 660
 661         END {
 662                 printf "#define AC(name) (sizeof(struct name) / sizeof(syscall_arg_t))\n" > sysinc
 663                 printf "\n" > sysinc
 664
 665                 printf("\n__END_DECLS\n") > sysprotoend
 666                 printf("#undef PAD_\n") > sysprotoend
 667                 printf("#undef PADL_\n") > sysprotoend
 668                 printf("#undef PADR_\n") > sysprotoend
 669                 printf "\n#endif /* __APPLE_API_PRIVATE */\n" > sysprotoend
 670                 printf "#endif /* KERNEL */\n" > sysprotoend
 671                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 672
 673                 printf("};\n") > sysent
 674                 printf("int     nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
 675                 printf("/* Verify that NUM_SYSENT reflects the latest syscall count */\n") > sysent
 676                 printf("_Static_assert(((sizeof(sysent) / sizeof(sysent[0])) == NUM_SYSENT), \"NUM_SYSENT needs to be updated to match syscall count\");\n") > sysent
 677
 678                 printf("};\n") > syscallnamestempfile
 679                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall_num) \
 680                     > syshdrtempfile
 681                 printf("\n#endif /* __APPLE_API_PRIVATE */\n") > syshdrtempfile
 682                 printf("#endif /* !%s */\n", syscall_h) > syshdrtempfile
 683                 printf("};\n\n") > audittempfile
 684                 printf("#endif /* AUDIT */\n") > audittempfile
 685         } '
 686
 687 # define value in syscall table file to permit redifintion because of the way
 688 # __private_extern__ (doesn't) work.
 689 if [ $output_syscalltablefile -eq 1 ]; then
 690     cat $syslegal > $syscalltablefile
 691     printf "#define __INIT_SYSENT_C__ 1\n" >> $syscalltablefile
 692     cat $sysinc $sysent >> $syscalltablefile
 693 fi
 694
 695 if [ $output_syscallnamesfile -eq 1 ]; then
 696     cat $syslegal $syscallnamestempfile > $syscallnamesfile
 697 fi
 698
 699 if [ $output_sysprotofile -eq 1 ]; then
 700     cat $syslegal $sysarg $sysprotoend > $sysprotofile
 701 fi
 702
 703 if [ $output_syshdrfile -eq 1 ]; then
 704     cat $syslegal $syshdrtempfile > $syshdrfile
 705 fi
 706
 707 if [ $output_auditevfile -eq 1 ]; then
 708     cat $syslegal $audittempfile > $auditevfile
 709 fi