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 output_tracecodes=0
  38 output_systrace=0
  39
  40 use_stdout=0
  41
  42 # output files:
  43 syscallnamesfile="syscalls.c"
  44 sysprotofile="sysproto.h"
  45 sysproto_h=_SYS_SYSPROTO_H_
  46 syshdrfile="syscall.h"
  47 syscall_h=_SYS_SYSCALL_H_
  48 syscalltablefile="init_sysent.c"
  49 auditevfile="audit_kevents.c"
  50 syscallprefix="SYS_"
  51 switchname="sysent"
  52 namesname="syscallnames"
  53 tracecodename="syscall.codes"
  54 systraceargsfile="systrace_args.c"
  55 # tmp files:
  56 syslegal="sysent.syslegal.$$"
  57 sysent="sysent.switch.$$"
  58 sysinc="sysinc.switch.$$"
  59 sysarg="sysarg.switch.$$"
  60 sysprotoend="sysprotoend.$$"
  61 syscallnamestempfile="syscallnamesfile.$$"
  62 syshdrtempfile="syshdrtempfile.$$"
  63 audittempfile="audittempfile.$$"
  64 tracecodetempfile="tracecodetempfile.$$"
  65 systraceargstempfile="systraceargstempfile.$$"
  66 systraceargdesctempfile="systraceargdesctempfile.$$"
  67 systracerettempfile="systracerettempfile.$$"
  68
  69 trap "rm $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile $systraceargstempfile $systraceargdesctempfile $systracerettempfile" 0
  70
  71 touch $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile $systraceargstempfile $systraceargdesctempfile $systracerettempfile
  72
  73 case $# in
  74     0)
  75         echo "usage: $0 input-file [<names|proto|header|table|audit|trace> [<config-file>]]" 1>&2
  76         exit 1
  77         ;;
  78 esac
  79
  80 input_file="$1"
  81 shift
  82
  83 if [ -n "$1" ]; then
  84     case $1 in
  85         names)
  86             output_syscallnamesfile=1
  87             ;;
  88         proto)
  89             output_sysprotofile=1
  90             ;;
  91         header)
  92             output_syshdrfile=1
  93             ;;
  94         table)
  95             output_syscalltablefile=1
  96             ;;
  97         audit)
  98             output_auditevfile=1
  99             ;;
 100         systrace)
 101             output_systrace=1
 102             ;;
 103         trace)
 104             output_tracecodes=1
 105             use_stdout=1
 106             ;;
 107     esac
 108     shift;
 109 else
 110     output_syscallnamesfile=1
 111     output_sysprotofile=1
 112     output_syshdrfile=1
 113     output_syscalltablefile=1
 114     output_auditevfile=1
 115     output_tracecodes=1
 116 fi
 117
 118 if [ -n "$1" -a -f "$1" ]; then
 119         . $1
 120 fi
 121
 122
 123
 124 sed -e '
 125 s/\$//g
 126 :join
 127         /\\$/{a\
 128
 129         N
 130         s/\\\n//
 131         b join
 132         }
 133 2,${
 134         /^#/!s/\([{}()*,;]\)/ \1 /g
 135 }
 136 ' < "$input_file" | awk "
 137         BEGIN {
 138                 syslegal = \"$syslegal\"
 139                 sysprotofile = \"$sysprotofile\"
 140                 sysprotoend = \"$sysprotoend\"
 141                 sysproto_h = \"$sysproto_h\"
 142                 syscall_h = \"$syscall_h\"
 143                 sysent = \"$sysent\"
 144                 syscalltablefile = \"$syscalltablefile\"
 145                 sysinc = \"$sysinc\"
 146                 sysarg = \"$sysarg\"
 147                 syscallnamesfile = \"$syscallnamesfile\"
 148                 syscallnamestempfile = \"$syscallnamestempfile\"
 149                 syshdrfile = \"$syshdrfile\"
 150                 syshdrtempfile = \"$syshdrtempfile\"
 151                 systraceargstempfile = \"$systraceargstempfile\"
 152                 systraceargdesctempfile = \"$systraceargdesctempfile\"
 153                 systracerettempfile = \"$systracerettempfile\"
 154                 audittempfile = \"$audittempfile\"
 155                 tracecodetempfile = \"$tracecodetempfile\"
 156                 syscallprefix = \"$syscallprefix\"
 157                 switchname = \"$switchname\"
 158                 namesname = \"$namesname\"
 159                 infile = \"$input_file\"
 160                 "'
 161
 162                 printf "/*\n" > syslegal
 163                 printf " * Copyright (c) 2004-2008 Apple Inc. All rights reserved.\n" > syslegal
 164                 printf " * \n" > syslegal
 165                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_START@\n" > syslegal
 166                 printf " * \n" > syslegal
 167                 printf " * This file contains Original Code and/or Modifications of Original Code\n" > syslegal
 168                 printf " * as defined in and that are subject to the Apple Public Source License\n" > syslegal
 169                 printf " * Version 2.0 (the \047License\047). You may not use this file except in\n" > syslegal
 170                 printf " * compliance with the License. The rights granted to you under the License\n" > syslegal
 171                 printf " * may not be used to create, or enable the creation or redistribution of,\n" > syslegal
 172                 printf " * unlawful or unlicensed copies of an Apple operating system, or to\n" > syslegal
 173                 printf " * circumvent, violate, or enable the circumvention or violation of, any\n" > syslegal
 174                 printf " * terms of an Apple operating system software license agreement.\n" > syslegal
 175                 printf " * \n" > syslegal
 176                 printf " * Please obtain a copy of the License at\n" > syslegal
 177                 printf " * http://www.opensource.apple.com/apsl/ and read it before using this file.\n" > syslegal
 178                 printf " * \n" > syslegal
 179                 printf " * The Original Code and all software distributed under the License are\n" > syslegal
 180                 printf " * distributed on an \047AS IS\047 basis, WITHOUT WARRANTY OF ANY KIND, EITHER\n" > syslegal
 181                 printf " * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,\n" > syslegal
 182                 printf " * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,\n" > syslegal
 183                 printf " * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.\n" > syslegal
 184                 printf " * Please see the License for the specific language governing rights and\n" > syslegal
 185                 printf " * limitations under the License.\n" > syslegal
 186                 printf " * \n" > syslegal
 187                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_END@\n" > syslegal
 188                 printf " * \n" > syslegal
 189                 printf " * \n" > syslegal
 190                 printf " * System call switch table.\n *\n" > syslegal
 191                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syslegal
 192                 printf " * created from %s\n */\n\n", infile > syslegal
 193         }
 194         NR == 1 {
 195                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 196                 printf "__private_extern__ const struct sysent %s[] = {\n",switchname > sysent
 197
 198                 printf "#ifndef %s\n", sysproto_h > sysarg
 199                 printf "#define\t%s\n\n", sysproto_h > sysarg
 200                 printf "#ifndef %s\n", syscall_h > syshdrtempfile
 201                 printf "#define\t%s\n\n", syscall_h > syshdrtempfile
 202                 printf "#include <sys/appleapiopts.h>\n" > syshdrtempfile
 203                 printf "#ifdef __APPLE_API_PRIVATE\n" > syshdrtempfile
 204                 printf "#include <sys/appleapiopts.h>\n" > sysarg
 205                 printf "#include <sys/cdefs.h>\n" > sysarg
 206                 printf "#include <sys/mount_internal.h>\n" > sysarg
 207                 printf "#include <sys/types.h>\n" > sysarg
 208                 printf "#include <sys/sem_internal.h>\n" > sysarg
 209                 printf "#include <sys/semaphore.h>\n" > sysarg
 210                 printf "#include <sys/wait.h>\n" > sysarg
 211                 printf "#include <mach/shared_region.h>\n" > sysarg
 212                 printf "\n#ifdef KERNEL\n" > sysarg
 213                 printf "#ifdef __APPLE_API_PRIVATE\n" > sysarg
 214                 printf "/*\n" > sysarg
 215                 printf " * The kernel may support multiple userspace ABIs, and must use\n" > sysarg
 216                 printf " * argument structures with elements large enough for any of them.\n" > sysarg
 217                 printf "*/\n" > sysarg
 218                 printf "\n" > sysarg
 219                 printf "#if CONFIG_REQUIRES_U32_MUNGING\n" > sysarg
 220                 printf "#define\tPAD_(t)\t(sizeof(uint64_t) <= sizeof(t) \\\n " > sysarg
 221                 printf "\t\t? 0 : sizeof(uint64_t) - sizeof(t))\n" > sysarg
 222                 printf "#else\n" > sysarg
 223                 printf "#define\tPAD_(t)\t(sizeof(uint32_t) <= sizeof(t) \\\n" > sysarg
 224                 printf "                ? 0 : sizeof(uint32_t) - sizeof(t))\n" > sysarg
 225                 printf "#endif\n" > sysarg
 226                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 227                 printf "#define\tPADL_(t)\t0\n" > sysarg
 228                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 229                 printf "#else\n" > sysarg
 230                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 231                 printf "#define\tPADR_(t)\t0\n" > sysarg
 232                 printf "#endif\n" > sysarg
 233                 printf "\n__BEGIN_DECLS\n" > sysarg
 234                 printf "#include <sys/munge.h>\n" > sysarg
 235
 236                 printf "\n" > sysarg
 237
 238                 printf "const char *%s[] = {\n", namesname > syscallnamestempfile
 239
 240                 printf "#include <sys/param.h>\n" > audittempfile
 241                 printf "#include <sys/types.h>\n\n" > audittempfile
 242                 printf "#include <bsm/audit.h>\n" > audittempfile
 243                 printf "#include <bsm/audit_kevents.h>\n\n" > audittempfile
 244                 printf "#if CONFIG_AUDIT\n\n" > audittempfile
 245                 printf "au_event_t sys_au_event[] = {\n" > audittempfile
 246
 247                 printf "/*\n * System call argument to DTrace register array conversion.\n */\n" > systraceargstempfile
 248                 printf "#include <sys/systrace_args.h>\n" > systraceargstempfile
 249                 printf "void\nsystrace_args(int sysnum, void *params, uint64_t *uarg)\n{\n" > systraceargstempfile
 250                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systraceargstempfile
 251                 printf "\tswitch (sysnum) {\n" > systraceargstempfile
 252
 253                 printf "void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceargdesctempfile
 254                 printf "\tswitch (sysnum) {\n" > systraceargdesctempfile
 255
 256                 printf "void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracerettempfile
 257                 printf "\tswitch (sysnum) {\n" > systracerettempfile
 258
 259                 next
 260         }
 261         NF == 0 || $1 ~ /^;/ {
 262                 next
 263         }
 264         $1 ~ /^#[       ]*include/ {
 265                 print > sysinc
 266                 next
 267         }
 268         $1 ~ /^#[       ]*if/ {
 269                 print > sysent
 270                 print > sysarg
 271                 print > syscallnamestempfile
 272                 print > sysprotoend
 273                 print > audittempfile
 274                 print > systraceargstempfile
 275                 print > systraceargdesctempfile
 276                 print > systracerettempfile
 277                 savesyscall = syscall_num
 278                 skip_for_header = 0
 279                 next
 280         }
 281         $1 ~ /^#[       ]*else/ {
 282                 print > sysent
 283                 print > sysarg
 284                 print > syscallnamestempfile
 285                 print > sysprotoend
 286                 print > audittempfile
 287                 print > systraceargstempfile
 288                 print > systraceargdesctempfile
 289                 print > systracerettempfile
 290                 syscall_num = savesyscall
 291                 skip_for_header = 1
 292                 next
 293         }
 294         $1 ~ /^#/ {
 295                 print > sysent
 296                 print > sysarg
 297                 print > syscallnamestempfile
 298                 print > sysprotoend
 299                 print > audittempfile
 300                 print > systraceargstempfile
 301                 print > systraceargdesctempfile
 302                 print > systracerettempfile
 303                 skip_for_header = 0
 304                 next
 305         }
 306         syscall_num != $1 {
 307                 printf "%s: line %d: syscall number out of sync at %d\n",
 308                     infile, NR, syscall_num
 309                 printf "line is:\n"
 310                 print
 311                 exit 1
 312         }
 313         function align_comment(linesize, location, thefile) {
 314                 printf(" ") > thefile
 315                 while (linesize < location) {
 316                         printf(" ") > thefile
 317                         linesize++
 318                 }
 319         }
 320         function parserr(was, wanted) {
 321                 printf "%s: line %d: unexpected %s (expected %s)\n",
 322                     infile, NR, was, wanted
 323                 exit 1
 324         }
 325
 326         function parseline() {
 327                 funcname = ""
 328                 current_field = 4       # skip number, audit event, type
 329                 args_start = 0
 330                 args_end = 0
 331                 comments_start = 0
 332                 comments_end = 0
 333                 argc = 0
 334                 argssize = "0"
 335                 additional_comments = " "
 336                 obs_comments = "_"
 337
 338                 # find start and end of call name and arguments
 339                 if ($current_field != "{")
 340                         parserr($current_field, "{")
 341                 args_start = current_field
 342                 current_field++
 343                 while (current_field <= NF) {
 344                         if ($current_field == "}") {
 345                                 args_end = current_field
 346                                 break
 347                         }
 348                         current_field++
 349                 }
 350                 if (args_end == 0) {
 351                         printf "%s: line %d: invalid call name and arguments\n",
 352                         infile, NR
 353                         exit 1
 354                 }
 355
 356                 # find start and end of optional comments
 357                 current_field++
 358                 if (current_field < NF && $current_field == "{") {
 359                         comments_start = current_field
 360                         while (current_field <= NF) {
 361                                 if ($current_field == "}") {
 362                                         comments_end = current_field
 363                                         break
 364                                 }
 365                                 current_field++
 366                         }
 367                         if (comments_end == 0) {
 368                                 printf "%s: line %d: invalid comments \n",
 369                                         infile, NR
 370                                 exit 1
 371                         }
 372                 }
 373
 374                 if ($args_end != "}")
 375                         parserr($args_end, "}")
 376                 args_end--
 377                 if ($args_end != ";")
 378                         parserr($args_end, ";")
 379                 args_end--
 380
 381                 # skip any NO_SYSCALL_STUB qualifier
 382                 if ($args_end == "NO_SYSCALL_STUB")
 383                         args_end--
 384
 385                 if ($args_end != ")")
 386                         parserr($args_end, ")")
 387                 args_end--
 388
 389                 # extract additional comments
 390                 if (comments_start != 0) {
 391                         current_field = comments_start + 1
 392                         while (current_field < comments_end) {
 393                                 additional_comments = additional_comments $current_field " "
 394                                 obs_comments = obs_comments $current_field "_"
 395                                 current_field++
 396                         }
 397                 }
 398                 sub(/old/, "obs", obs_comments)
 399                 obs_comments = substr(obs_comments, 1, length(obs_comments)-1)
 400                 if (obs_comments == "_") {
 401                         obs_comments = ""
 402                 }
 403
 404                 # get function return type
 405                 current_field = args_start + 1
 406                 returntype = $current_field
 407
 408                 # get function name and set up to get arguments
 409                 current_field++
 410                 funcname = $current_field
 411                 argalias = funcname "_args"
 412                 current_field++ # bump past function name
 413
 414                 if ($current_field != "(")
 415                         parserr($current_field, "(")
 416                 current_field++
 417
 418                 if (current_field == args_end) {
 419                         if ($current_field != "void")
 420                                 parserr($current_field, "argument definition")
 421                         return
 422                 }
 423
 424                 # extract argument types and names
 425                 while (current_field <= args_end) {
 426                         argc++
 427                         argtype[argc]=""
 428                         ext_argtype[argc]=""
 429                         oldf=""
 430                         while (current_field < args_end && $(current_field + 1) != ",") {
 431                                 if (argtype[argc] != "" && oldf != "*") {
 432                                         argtype[argc] = argtype[argc] " ";
 433                                 }
 434                                 argtype[argc] = argtype[argc] $current_field;
 435                                 ext_argtype[argc] = argtype[argc];
 436                                 oldf = $current_field;
 437                                 current_field++
 438                         }
 439                         if (argtype[argc] == "")
 440                                 parserr($current_field, "argument definition")
 441                         argname[argc] = $current_field;
 442                         current_field += 2;                     # skip name, and any comma
 443                 }
 444                 if (argc > 8) {
 445                         printf "%s: line %d: too many arguments!\n", infile, NR
 446                         exit 1
 447                 }
 448                 if (argc != 0)
 449                         argssize = "AC(" argalias ")"
 450         }
 451
 452         {
 453                 auditev = $2;
 454         }
 455
 456         {
 457                 add_sysent_entry = 1
 458                 add_sysnames_entry = 1
 459                 add_sysheader_entry = 1
 460                 add_sysproto_entry = 1
 461
 462
 463                 if ($3 != "ALL") {
 464                         files_keyword_OK = 0
 465                         add_sysent_entry = 0
 466                         add_sysnames_entry = 0
 467                         add_sysheader_entry = 0
 468                         add_sysproto_entry = 0
 469
 470                         if (match($3, "[T]") != 0) {
 471                                 add_sysent_entry = 1
 472                                 files_keyword_OK = 1
 473                         }
 474                         if (match($3, "[N]") != 0) {
 475                                 add_sysnames_entry = 1
 476                                 files_keyword_OK = 1
 477                         }
 478                         if (match($3, "[H]") != 0) {
 479                                 add_sysheader_entry = 1
 480                                 files_keyword_OK = 1
 481                         }
 482                         if (match($3, "[P]") != 0) {
 483                                 add_sysproto_entry = 1
 484                                 files_keyword_OK = 1
 485                         }
 486
 487                         if (files_keyword_OK == 0) {
 488                                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 489                                 exit 1
 490                         }
 491                 }
 492
 493
 494                 parseline()
 495
 496                 # output function argument structures to sysproto.h and build the
 497                 # name of the appropriate argument mungers
 498                 munge32 = "NULL"
 499                 size32 = 0
 500
 501                 if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 502                         printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall_num) > systraceargstempfile
 503                         printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systraceargdesctempfile
 504                         printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systracerettempfile
 505                         if (argc > 0) {
 506                                 printf("\t\tswitch(ndx) {\n") > systraceargdesctempfile
 507                                 printf("\t\tstruct %s *p = params;\n", argalias) > systraceargstempfile
 508                                 for (i = 1; i <= argc; i++) {
 509                                         arg = argtype[i]
 510                                         sub("__restrict$", "", arg)
 511                                         if (index(arg, "*") > 0)
 512                                                 printf("\t\tcase %d:\n\t\t\tp = \"userland %s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
 513                                         else
 514                                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
 515                                         if (index(arg, "*") > 0 || arg == "caddr_t")
 516                                                 printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 517                                                         i - 1, \
 518                                                         argname[i], arg) > systraceargstempfile
 519                                         else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 520                                                 printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 521                                                         i - 1, \
 522                                                         argname[i], arg) > systraceargstempfile
 523                                         else
 524                                                 printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 525                                                         i - 1, \
 526                                                         argname[i], arg) > systraceargstempfile
 527                                 }
 528                                 printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systraceargdesctempfile
 529
 530                         }
 531                         printf("\t\tbreak;\n\t}\n", argc) > systraceargstempfile
 532                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systracerettempfile
 533                         printf("\t\t\tp = \"%s\";\n", returntype) > systracerettempfile
 534                         printf("\t\tbreak;\n") > systracerettempfile
 535                         printf("\t\tbreak;\n") > systraceargdesctempfile
 536                         if (argc != 0) {
 537                                 if (add_sysproto_entry == 1) {
 538                                         printf("struct %s {\n", argalias) > sysarg
 539                                 }
 540                                 munge32 = "munge_"
 541                                 for (i = 1; i <= argc; i++) {
 542                                         # Build name of argument munger.
 543                                         # We account for all sys call argument types here.
 544                                         # This is where you add any new types.  With LP64 support
 545                                         # each argument consumes 64-bits.
 546                                         # see .../xnu/bsd/dev/munge.c for munge argument types.
 547                                         if (argtype[i] == "long") {
 548                                                 ext_argtype[i] = "user_long_t";
 549                                                 munge32 = munge32 "s"
 550                                                 size32 += 4
 551                                         }
 552                                         else if (argtype[i] == "u_long") {
 553                                                 ext_argtype[i] = "user_ulong_t";
 554                                                 munge32 = munge32 "w"
 555                                                 size32 += 4
 556                                         }
 557                                         else if (argtype[i] == "size_t") {
 558                                                 ext_argtype[i] = "user_size_t";
 559                                                 munge32 = munge32 "w"
 560                                                 size32 += 4
 561                                         }
 562                                         else if (argtype[i] == "ssize_t") {
 563                                                 ext_argtype[i] = "user_ssize_t";
 564                                                 munge32 = munge32 "s"
 565                                                 size32 += 4
 566                                         }
 567                                         else if (argtype[i] == "user_ssize_t" || argtype[i] == "user_long_t") {
 568                                                 munge32 = munge32 "s"
 569                                                 size32 += 4
 570                                         }
 571                                         else if (argtype[i] == "user_addr_t" || argtype[i] == "user_size_t" ||
 572                                                 argtype[i] == "user_ulong_t") {
 573                                                 munge32 = munge32 "w"
 574                                                 size32 += 4
 575                                         }
 576                                         else if (argtype[i] == "caddr_t" || argtype[i] == "semun_t" ||
 577                                                 argtype[i] == "uuid_t" || match(argtype[i], "[\*]") != 0) {
 578                                                 ext_argtype[i] = "user_addr_t";
 579                                                 munge32 = munge32 "w"
 580                                                 size32 += 4
 581                                         }
 582                                         else if (argtype[i] == "int" || argtype[i] == "u_int" ||
 583                                                          argtype[i] == "uid_t" || argtype[i] == "pid_t" ||
 584                                                          argtype[i] == "id_t" || argtype[i] == "idtype_t" ||
 585                                                          argtype[i] == "socklen_t" || argtype[i] == "uint32_t" || argtype[i] == "int32_t" ||
 586                                                          argtype[i] == "sigset_t" || argtype[i] == "gid_t" || argtype[i] == "unsigned int" ||
 587                                                          argtype[i] == "mode_t" || argtype[i] == "key_t" ||
 588                                                          argtype[i] == "mach_port_name_t" || argtype[i] == "au_asid_t" ||
 589                                                          argtype[i] == "sae_associd_t" || argtype[i] == "sae_connid_t") {
 590                                                 munge32 = munge32 "w"
 591                                                 size32 += 4
 592                                         }
 593                                         else if (argtype[i] == "off_t" || argtype[i] == "int64_t" || argtype[i] == "uint64_t") {
 594                                                 munge32 = munge32 "l"
 595                                                 size32 += 8
 596                                         }
 597                                         else {
 598                                                 printf "%s: line %d: invalid type \"%s\" \n",
 599                                                         infile, NR, argtype[i]
 600                                                 printf "You need to add \"%s\" into the type checking code. \n",
 601                                                          argtype[i]
 602                                                 exit 1
 603                                         }
 604                                         if (add_sysproto_entry == 1) {
 605                                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 606                                                         "%s %s; char %s_r_[PADR_(%s)];\n",
 607                                                         argname[i], ext_argtype[i],
 608                                                         ext_argtype[i], argname[i],
 609                                                         argname[i], ext_argtype[i]) > sysarg
 610                                         }
 611                                 }
 612                                 if (add_sysproto_entry == 1) {
 613                                         printf("};\n") > sysarg
 614                                 }
 615                         }
 616                         else if (add_sysproto_entry == 1) {
 617                                 printf("struct %s {\n\tint32_t dummy;\n};\n", argalias) > sysarg
 618                         }
 619                 }
 620
 621                 # output to init_sysent.c
 622                 tempname = funcname
 623                 if (add_sysent_entry == 0) {
 624                         argssize = "0"
 625                         munge32 = "NULL"
 626                         munge_ret = "_SYSCALL_RET_NONE"
 627                         if (tempname != "enosys") {
 628                                 tempname = "nosys"
 629                         }
 630                 }
 631                 else {
 632                         # figure out which return value type to munge
 633                         if (returntype == "user_addr_t") {
 634                                 munge_ret = "_SYSCALL_RET_ADDR_T"
 635                         }
 636                         else if (returntype == "user_ssize_t") {
 637                                 munge_ret = "_SYSCALL_RET_SSIZE_T"
 638                         }
 639                         else if (returntype == "user_size_t") {
 640                                 munge_ret = "_SYSCALL_RET_SIZE_T"
 641                         }
 642                         else if (returntype == "int") {
 643                                 munge_ret = "_SYSCALL_RET_INT_T"
 644                         }
 645                         else if (returntype == "u_int" || returntype == "mach_port_name_t") {
 646                                 munge_ret = "_SYSCALL_RET_UINT_T"
 647                         }
 648                         else if (returntype == "uint32_t") {
 649                                 munge_ret = "_SYSCALL_RET_UINT_T"
 650                         }
 651                         else if (returntype == "uint64_t") {
 652                                 munge_ret = "_SYSCALL_RET_UINT64_T"
 653                         }
 654                         else if (returntype == "off_t") {
 655                                 munge_ret = "_SYSCALL_RET_OFF_T"
 656                         }
 657                         else if (returntype == "void") {
 658                                 munge_ret = "_SYSCALL_RET_NONE"
 659                         }
 660                         else {
 661                                 printf "%s: line %d: invalid return type \"%s\" \n",
 662                                         infile, NR, returntype
 663                                 printf "You need to add \"%s\" into the return type checking code. \n",
 664                                          returntype
 665                                 exit 1
 666                         }
 667                 }
 668
 669                 printf("#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))\n") > sysent
 670                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s, %s},",
 671                                 tempname, munge32, munge_ret, argssize, size32) > sysent
 672                 linesize = length(tempname) + length(munge32) + \
 673                         length(munge_ret) + length(argssize) + length(size32) + 28
 674                 align_comment(linesize, 88, sysent)
 675                 printf("/* %d = %s%s*/\n", syscall_num, funcname, additional_comments) > sysent
 676                 printf("#else\n") > sysent
 677                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s},\n",
 678                                 tempname, munge_ret, argssize, size32) > sysent
 679                 printf("#endif\n") > sysent
 680
 681                 # output to syscalls.c
 682                 if (add_sysnames_entry == 1) {
 683                         tempname = funcname
 684                         if (funcname == "nosys" || funcname == "enosys") {
 685                                 if (syscall_num == 0)
 686                                         tempname = "syscall"
 687                                 else
 688                                         tempname = "#" syscall_num
 689                         }
 690                         printf("\t\"%s\", ", tempname) > syscallnamestempfile
 691                         linesize = length(tempname) + 8
 692                         align_comment(linesize, 25, syscallnamestempfile)
 693                         if (substr(tempname,1,1) == "#") {
 694                                 printf("/* %d =%s*/\n", syscall_num, additional_comments) > syscallnamestempfile
 695                         }
 696                         else {
 697                                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > syscallnamestempfile
 698                         }
 699                 }
 700
 701                 # output to syscalls.h
 702                 if (add_sysheader_entry == 1) {
 703                         tempname = funcname
 704                         if (syscall_num == 0) {
 705                                 tempname = "syscall"
 706                         }
 707                         if (tempname != "nosys" && tempname != "enosys") {
 708                                 printf("#define\t%s%s", syscallprefix, tempname) > syshdrtempfile
 709                                 linesize = length(syscallprefix) + length(tempname) + 12
 710                                 align_comment(linesize, 30, syshdrtempfile)
 711                                 printf("%d\n", syscall_num) > syshdrtempfile
 712                         }
 713                         else if (skip_for_header == 0) {
 714                                 printf("\t\t\t/* %d %s*/\n", syscall_num, additional_comments) > syshdrtempfile
 715                         }
 716                 }
 717
 718                 # output function prototypes to sysproto.h
 719                 if (add_sysproto_entry == 1) {
 720                         if (funcname =="exit") {
 721                                 printf("void %s(struct proc *, struct %s *, int32_t *);\n",
 722                                                 funcname, argalias) > sysprotoend
 723                         }
 724                         else if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 725                                 printf("int %s(struct proc *, struct %s *, %s *);\n",
 726                                                 funcname, argalias, returntype) > sysprotoend
 727                         }
 728                 }
 729
 730                 # output to audit_kevents.c
 731                 printf("\t%s,\t\t", auditev) > audittempfile
 732                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > audittempfile
 733
 734                 tempname = funcname
 735                 if (skip_for_header == 0) {
 736                         if (tempname == "nosys" || tempname == "enosys") {
 737                                 if (obs_comments == "") {
 738                                         printf("0x40c%04x\tBSC_#%d%s\n", (syscall_num*4), syscall_num, obs_comments) > tracecodetempfile
 739                                 } else {
 740                                         printf("0x40c%04x\tBSC%s\n", (syscall_num*4), obs_comments) > tracecodetempfile
 741                                 }
 742                         } else {
 743                                 sub(/^_+/, "", tempname)
 744                                 printf("0x40c%04x\tBSC_%s\n", (syscall_num*4), tempname) > tracecodetempfile
 745                         }
 746                 }
 747
 748                 syscall_num++
 749                 next
 750         }
 751
 752         END {
 753                 printf "#define AC(name) (sizeof(struct name) / sizeof(syscall_arg_t))\n" > sysinc
 754                 printf "\n" > sysinc
 755
 756                 printf("\n__END_DECLS\n") > sysprotoend
 757                 printf("#undef PAD_\n") > sysprotoend
 758                 printf("#undef PADL_\n") > sysprotoend
 759                 printf("#undef PADR_\n") > sysprotoend
 760                 printf "\n#endif /* __APPLE_API_PRIVATE */\n" > sysprotoend
 761                 printf "#endif /* KERNEL */\n" > sysprotoend
 762                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 763
 764                 printf("};\n") > sysent
 765                 printf("unsigned int    nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
 766
 767                 printf("};\n") > syscallnamestempfile
 768                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall_num) \
 769                     > syshdrtempfile
 770                 printf("#define\t%sinvalid\t%d\n", syscallprefix, 63) \
 771                     > syshdrtempfile
 772                 printf("\n#endif /* __APPLE_API_PRIVATE */\n") > syshdrtempfile
 773                 printf("#endif /* !%s */\n", syscall_h) > syshdrtempfile
 774                 printf("};\n\n") > audittempfile
 775                 printf("#endif /* AUDIT */\n") > audittempfile
 776
 777                 printf "\tdefault:\n\t\tbreak;\n\t};\n}\n" > systraceargstempfile
 778                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceargdesctempfile
 779                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracerettempfile
 780         } '
 781
 782 # define value in syscall table file to permit redifintion because of the way
 783 # __private_extern__ (doesn't) work.
 784 if [ $output_syscalltablefile -eq 1 ]; then
 785     cat $syslegal > $syscalltablefile
 786     printf "#define __INIT_SYSENT_C__ 1\n" >> $syscalltablefile
 787     cat $sysinc $sysent >> $syscalltablefile
 788 fi
 789
 790 if [ $output_syscallnamesfile -eq 1 ]; then
 791     cat $syslegal $syscallnamestempfile > $syscallnamesfile
 792 fi
 793
 794 if [ $output_sysprotofile -eq 1 ]; then
 795     cat $syslegal $sysarg $sysprotoend > $sysprotofile
 796 fi
 797
 798 if [ $output_syshdrfile -eq 1 ]; then
 799     cat $syslegal $syshdrtempfile > $syshdrfile
 800 fi
 801
 802 if [ $output_auditevfile -eq 1 ]; then
 803     cat $syslegal $audittempfile > $auditevfile
 804 fi
 805
 806 if [ $output_systrace -eq 1 ]; then
 807         cat $systraceargstempfile > $systraceargsfile
 808         cat $systraceargdesctempfile >> $systraceargsfile
 809         cat $systracerettempfile >> $systraceargsfile
 810 fi
 811
 812 if [ $output_tracecodes -eq 1 ]; then
 813         if [ $use_stdout -eq 1 ]; then
 814                 cat $tracecodetempfile
 815         else
 816                 cat $tracecodetempfile > $tracecodename
 817         fi
 818 fi
 819