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 = \"$input_file\"
 160                 infilepretty = \"${input_file#"$TARGET"}\"
 161                 "'
 162
 163                 printf "/*\n" > syslegal
 164                 printf " * Copyright (c) 2004-2008 Apple Inc. All rights reserved.\n" > syslegal
 165                 printf " * \n" > syslegal
 166                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_START@\n" > syslegal
 167                 printf " * \n" > syslegal
 168                 printf " * This file contains Original Code and/or Modifications of Original Code\n" > syslegal
 169                 printf " * as defined in and that are subject to the Apple Public Source License\n" > syslegal
 170                 printf " * Version 2.0 (the \047License\047). You may not use this file except in\n" > syslegal
 171                 printf " * compliance with the License. The rights granted to you under the License\n" > syslegal
 172                 printf " * may not be used to create, or enable the creation or redistribution of,\n" > syslegal
 173                 printf " * unlawful or unlicensed copies of an Apple operating system, or to\n" > syslegal
 174                 printf " * circumvent, violate, or enable the circumvention or violation of, any\n" > syslegal
 175                 printf " * terms of an Apple operating system software license agreement.\n" > syslegal
 176                 printf " * \n" > syslegal
 177                 printf " * Please obtain a copy of the License at\n" > syslegal
 178                 printf " * http://www.opensource.apple.com/apsl/ and read it before using this file.\n" > syslegal
 179                 printf " * \n" > syslegal
 180                 printf " * The Original Code and all software distributed under the License are\n" > syslegal
 181                 printf " * distributed on an \047AS IS\047 basis, WITHOUT WARRANTY OF ANY KIND, EITHER\n" > syslegal
 182                 printf " * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,\n" > syslegal
 183                 printf " * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,\n" > syslegal
 184                 printf " * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.\n" > syslegal
 185                 printf " * Please see the License for the specific language governing rights and\n" > syslegal
 186                 printf " * limitations under the License.\n" > syslegal
 187                 printf " * \n" > syslegal
 188                 printf " * @APPLE_OSREFERENCE_LICENSE_HEADER_END@\n" > syslegal
 189                 printf " * \n" > syslegal
 190                 printf " * \n" > syslegal
 191                 printf " * System call switch table.\n *\n" > syslegal
 192                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syslegal
 193                 printf " * created from %s\n */\n\n", infilepretty > syslegal
 194         }
 195         NR == 1 {
 196                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 197                 printf "__private_extern__ const struct sysent %s[] = {\n",switchname > sysent
 198
 199                 printf "#ifndef %s\n", sysproto_h > sysarg
 200                 printf "#define\t%s\n\n", sysproto_h > sysarg
 201                 printf "#ifndef %s\n", syscall_h > syshdrtempfile
 202                 printf "#define\t%s\n\n", syscall_h > syshdrtempfile
 203                 printf "#include <sys/appleapiopts.h>\n" > syshdrtempfile
 204                 printf "#ifdef __APPLE_API_PRIVATE\n" > syshdrtempfile
 205                 printf "#include <sys/appleapiopts.h>\n" > sysarg
 206                 printf "#include <sys/cdefs.h>\n" > sysarg
 207                 printf "#include <sys/mount_internal.h>\n" > sysarg
 208                 printf "#include <sys/types.h>\n" > sysarg
 209                 printf "#include <sys/sem_internal.h>\n" > sysarg
 210                 printf "#include <sys/semaphore.h>\n" > sysarg
 211                 printf "#include <sys/wait.h>\n" > sysarg
 212                 printf "#include <mach/shared_region.h>\n" > sysarg
 213                 printf "\n#ifdef KERNEL\n" > sysarg
 214                 printf "#ifdef __APPLE_API_PRIVATE\n" > sysarg
 215                 printf "/*\n" > sysarg
 216                 printf " * The kernel may support multiple userspace ABIs, and must use\n" > sysarg
 217                 printf " * argument structures with elements large enough for any of them.\n" > sysarg
 218                 printf "*/\n" > sysarg
 219                 printf "\n" > sysarg
 220                 printf "#if CONFIG_REQUIRES_U32_MUNGING\n" > sysarg
 221                 printf "#define\tPAD_(t)\t(sizeof(uint64_t) <= sizeof(t) \\\n " > sysarg
 222                 printf "\t\t? 0 : sizeof(uint64_t) - sizeof(t))\n" > sysarg
 223                 printf "#else\n" > sysarg
 224                 printf "#define\tPAD_(t)\t(sizeof(uint32_t) <= sizeof(t) \\\n" > sysarg
 225                 printf "                ? 0 : sizeof(uint32_t) - sizeof(t))\n" > sysarg
 226                 printf "#endif\n" > sysarg
 227                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 228                 printf "#define\tPADL_(t)\t0\n" > sysarg
 229                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 230                 printf "#else\n" > sysarg
 231                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 232                 printf "#define\tPADR_(t)\t0\n" > sysarg
 233                 printf "#endif\n" > sysarg
 234                 printf "\n__BEGIN_DECLS\n" > sysarg
 235                 printf "#include <sys/munge.h>\n" > sysarg
 236
 237                 printf "\n" > sysarg
 238
 239                 printf "const char *%s[] = {\n", namesname > syscallnamestempfile
 240
 241                 printf "#include <sys/param.h>\n" > audittempfile
 242                 printf "#include <sys/types.h>\n\n" > audittempfile
 243                 printf "#include <bsm/audit.h>\n" > audittempfile
 244                 printf "#include <bsm/audit_kevents.h>\n\n" > audittempfile
 245                 printf "#if CONFIG_AUDIT\n\n" > audittempfile
 246                 printf "au_event_t sys_au_event[] = {\n" > audittempfile
 247
 248                 printf "/*\n * System call argument to DTrace register array conversion.\n */\n" > systraceargstempfile
 249                 printf "#include <sys/systrace_args.h>\n" > systraceargstempfile
 250                 printf "void\nsystrace_args(int sysnum, void *params, uint64_t *uarg)\n{\n" > systraceargstempfile
 251                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systraceargstempfile
 252                 printf "\tswitch (sysnum) {\n" > systraceargstempfile
 253
 254                 printf "void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceargdesctempfile
 255                 printf "\tswitch (sysnum) {\n" > systraceargdesctempfile
 256
 257                 printf "void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracerettempfile
 258                 printf "\tswitch (sysnum) {\n" > systracerettempfile
 259
 260                 next
 261         }
 262         NF == 0 || $1 ~ /^;/ {
 263                 next
 264         }
 265         $1 ~ /^#[       ]*include/ {
 266                 print > sysinc
 267                 next
 268         }
 269         $1 ~ /^#[       ]*if/ {
 270                 print > sysent
 271                 print > sysarg
 272                 print > syscallnamestempfile
 273                 print > sysprotoend
 274                 print > audittempfile
 275                 print > systraceargstempfile
 276                 print > systraceargdesctempfile
 277                 print > systracerettempfile
 278                 savesyscall = syscall_num
 279                 skip_for_header = 0
 280                 next
 281         }
 282         $1 ~ /^#[       ]*else/ {
 283                 print > sysent
 284                 print > sysarg
 285                 print > syscallnamestempfile
 286                 print > sysprotoend
 287                 print > audittempfile
 288                 print > systraceargstempfile
 289                 print > systraceargdesctempfile
 290                 print > systracerettempfile
 291                 syscall_num = savesyscall
 292                 skip_for_header = 1
 293                 next
 294         }
 295         $1 ~ /^#/ {
 296                 print > sysent
 297                 print > sysarg
 298                 print > syscallnamestempfile
 299                 print > sysprotoend
 300                 print > audittempfile
 301                 print > systraceargstempfile
 302                 print > systraceargdesctempfile
 303                 print > systracerettempfile
 304                 skip_for_header = 0
 305                 next
 306         }
 307         syscall_num != $1 {
 308                 printf "%s: line %d: syscall number out of sync at %d\n",
 309                     infile, NR, syscall_num
 310                 printf "line is:\n"
 311                 print
 312                 exit 1
 313         }
 314         function align_comment(linesize, location, thefile) {
 315                 printf(" ") > thefile
 316                 while (linesize < location) {
 317                         printf(" ") > thefile
 318                         linesize++
 319                 }
 320         }
 321         function parserr(was, wanted) {
 322                 printf "%s: line %d: unexpected %s (expected %s)\n",
 323                     infile, NR, was, wanted
 324                 exit 1
 325         }
 326
 327         function parseline() {
 328                 funcname = ""
 329                 current_field = 4       # skip number, audit event, type
 330                 args_start = 0
 331                 args_end = 0
 332                 comments_start = 0
 333                 comments_end = 0
 334                 argc = 0
 335                 argssize = "0"
 336                 additional_comments = " "
 337                 obs_comments = "_"
 338
 339                 # find start and end of call name and arguments
 340                 if ($current_field != "{")
 341                         parserr($current_field, "{")
 342                 args_start = current_field
 343                 current_field++
 344                 while (current_field <= NF) {
 345                         if ($current_field == "}") {
 346                                 args_end = current_field
 347                                 break
 348                         }
 349                         current_field++
 350                 }
 351                 if (args_end == 0) {
 352                         printf "%s: line %d: invalid call name and arguments\n",
 353                         infile, NR
 354                         exit 1
 355                 }
 356
 357                 # find start and end of optional comments
 358                 current_field++
 359                 if (current_field < NF && $current_field == "{") {
 360                         comments_start = current_field
 361                         while (current_field <= NF) {
 362                                 if ($current_field == "}") {
 363                                         comments_end = current_field
 364                                         break
 365                                 }
 366                                 current_field++
 367                         }
 368                         if (comments_end == 0) {
 369                                 printf "%s: line %d: invalid comments \n",
 370                                         infile, NR
 371                                 exit 1
 372                         }
 373                 }
 374
 375                 if ($args_end != "}")
 376                         parserr($args_end, "}")
 377                 args_end--
 378                 if ($args_end != ";")
 379                         parserr($args_end, ";")
 380                 args_end--
 381
 382                 # skip any NO_SYSCALL_STUB qualifier
 383                 if ($args_end == "NO_SYSCALL_STUB")
 384                         args_end--
 385
 386                 if ($args_end != ")")
 387                         parserr($args_end, ")")
 388                 args_end--
 389
 390                 # extract additional comments
 391                 if (comments_start != 0) {
 392                         current_field = comments_start + 1
 393                         while (current_field < comments_end) {
 394                                 additional_comments = additional_comments $current_field " "
 395                                 obs_comments = obs_comments $current_field "_"
 396                                 current_field++
 397                         }
 398                 }
 399                 sub(/old/, "obs", obs_comments)
 400                 obs_comments = substr(obs_comments, 1, length(obs_comments)-1)
 401                 if (obs_comments == "_") {
 402                         obs_comments = ""
 403                 }
 404
 405                 # get function return type
 406                 current_field = args_start + 1
 407                 returntype = $current_field
 408
 409                 # get function name and set up to get arguments
 410                 current_field++
 411                 funcname = $current_field
 412                 argalias = funcname "_args"
 413                 if (substr(argalias, 1, 4) == "sys_") {
 414                         argalias = substr(argalias, 5)
 415                 }
 416                 current_field++ # bump past function name
 417
 418                 if ($current_field != "(")
 419                         parserr($current_field, "(")
 420                 current_field++
 421
 422                 if (current_field == args_end) {
 423                         if ($current_field != "void")
 424                                 parserr($current_field, "argument definition")
 425                         return
 426                 }
 427
 428                 # extract argument types and names
 429                 while (current_field <= args_end) {
 430                         argc++
 431                         argtype[argc]=""
 432                         ext_argtype[argc]=""
 433                         oldf=""
 434                         while (current_field < args_end && $(current_field + 1) != ",") {
 435                                 if (argtype[argc] != "" && oldf != "*") {
 436                                         argtype[argc] = argtype[argc] " ";
 437                                 }
 438                                 argtype[argc] = argtype[argc] $current_field;
 439                                 ext_argtype[argc] = argtype[argc];
 440                                 oldf = $current_field;
 441                                 current_field++
 442                         }
 443                         if (argtype[argc] == "")
 444                                 parserr($current_field, "argument definition")
 445                         argname[argc] = $current_field;
 446                         current_field += 2;                     # skip name, and any comma
 447                 }
 448                 if (argc > 8) {
 449                         printf "%s: line %d: too many arguments!\n", infile, NR
 450                         exit 1
 451                 }
 452                 if (argc != 0)
 453                         argssize = "AC(" argalias ")"
 454         }
 455
 456         {
 457                 auditev = $2;
 458         }
 459
 460         {
 461                 add_sysent_entry = 1
 462                 add_sysnames_entry = 1
 463                 add_sysheader_entry = 1
 464                 add_sysproto_entry = 1
 465
 466
 467                 if ($3 != "ALL") {
 468                         files_keyword_OK = 0
 469                         add_sysent_entry = 0
 470                         add_sysnames_entry = 0
 471                         add_sysheader_entry = 0
 472                         add_sysproto_entry = 0
 473
 474                         if (match($3, "[T]") != 0) {
 475                                 add_sysent_entry = 1
 476                                 files_keyword_OK = 1
 477                         }
 478                         if (match($3, "[N]") != 0) {
 479                                 add_sysnames_entry = 1
 480                                 files_keyword_OK = 1
 481                         }
 482                         if (match($3, "[H]") != 0) {
 483                                 add_sysheader_entry = 1
 484                                 files_keyword_OK = 1
 485                         }
 486                         if (match($3, "[P]") != 0) {
 487                                 add_sysproto_entry = 1
 488                                 files_keyword_OK = 1
 489                         }
 490
 491                         if (files_keyword_OK == 0) {
 492                                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 493                                 exit 1
 494                         }
 495                 }
 496
 497
 498                 parseline()
 499
 500                 # output function argument structures to sysproto.h and build the
 501                 # name of the appropriate argument mungers
 502                 munge32 = "NULL"
 503                 size32 = 0
 504
 505                 if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 506                         printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall_num) > systraceargstempfile
 507                         printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systraceargdesctempfile
 508                         printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systracerettempfile
 509                         if (argc > 0) {
 510                                 printf("\t\tswitch(ndx) {\n") > systraceargdesctempfile
 511                                 printf("\t\tstruct %s *p = params;\n", argalias) > systraceargstempfile
 512                                 for (i = 1; i <= argc; i++) {
 513                                         arg = argtype[i]
 514                                         sub("__restrict$", "", arg)
 515                                         if (index(arg, "*") > 0)
 516                                                 printf("\t\tcase %d:\n\t\t\tp = \"userland %s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
 517                                         else
 518                                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
 519                                         if (index(arg, "*") > 0 || arg == "caddr_t")
 520                         printf("\t\tuarg[%d] = (uint64_t) p->%s; /* %s */\n", \
 521                                                         i - 1, \
 522                                                         argname[i], arg) > systraceargstempfile
 523                                         else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 524                         printf("\t\tuarg[%d] = (uint64_t) p->%s; /* %s */\n", \
 525                                                         i - 1, \
 526                                                         argname[i], arg) > systraceargstempfile
 527                                         else
 528                         printf("\t\tiarg[%d] = (int64_t) p->%s; /* %s */\n", \
 529                                                         i - 1, \
 530                                                         argname[i], arg) > systraceargstempfile
 531                                 }
 532                                 printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systraceargdesctempfile
 533
 534                         }
 535                         printf("\t\tbreak;\n\t}\n", argc) > systraceargstempfile
 536                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systracerettempfile
 537                         printf("\t\t\tp = \"%s\";\n", returntype) > systracerettempfile
 538                         printf("\t\tbreak;\n") > systracerettempfile
 539                         printf("\t\tbreak;\n") > systraceargdesctempfile
 540                         if (argc != 0) {
 541                                 if (add_sysproto_entry == 1) {
 542                                         printf("struct %s {\n", argalias) > sysarg
 543                                 }
 544                                 munge32 = "munge_"
 545                                 for (i = 1; i <= argc; i++) {
 546                                         # Build name of argument munger.
 547                                         # We account for all sys call argument types here.
 548                                         # This is where you add any new types.  With LP64 support
 549                                         # each argument consumes 64-bits.
 550                                         # see .../xnu/bsd/dev/munge.c for munge argument types.
 551                                         if (argtype[i] == "long") {
 552                                                 ext_argtype[i] = "user_long_t";
 553                                                 munge32 = munge32 "s"
 554                                                 size32 += 4
 555                                         }
 556                                         else if (argtype[i] == "u_long") {
 557                                                 ext_argtype[i] = "user_ulong_t";
 558                                                 munge32 = munge32 "w"
 559                                                 size32 += 4
 560                                         }
 561                                         else if (argtype[i] == "size_t") {
 562                                                 ext_argtype[i] = "user_size_t";
 563                                                 munge32 = munge32 "w"
 564                                                 size32 += 4
 565                                         }
 566                                         else if (argtype[i] == "ssize_t") {
 567                                                 ext_argtype[i] = "user_ssize_t";
 568                                                 munge32 = munge32 "s"
 569                                                 size32 += 4
 570                                         }
 571                                         else if (argtype[i] == "user_ssize_t" || argtype[i] == "user_long_t") {
 572                                                 munge32 = munge32 "s"
 573                                                 size32 += 4
 574                                         }
 575                                         else if (argtype[i] == "user_addr_t" || argtype[i] == "user_size_t" ||
 576                                                 argtype[i] == "user_ulong_t") {
 577                                                 munge32 = munge32 "w"
 578                                                 size32 += 4
 579                                         }
 580                                         else if (argtype[i] == "caddr_t" || argtype[i] == "semun_t" ||
 581                                                 argtype[i] == "uuid_t" || match(argtype[i], "[\*]") != 0) {
 582                                                 ext_argtype[i] = "user_addr_t";
 583                                                 munge32 = munge32 "w"
 584                                                 size32 += 4
 585                                         }
 586                                         else if (argtype[i] == "int" || argtype[i] == "u_int" ||
 587                                                          argtype[i] == "uid_t" || argtype[i] == "pid_t" ||
 588                                                          argtype[i] == "id_t" || argtype[i] == "idtype_t" ||
 589                                                          argtype[i] == "socklen_t" || argtype[i] == "uint32_t" || argtype[i] == "int32_t" ||
 590                                                          argtype[i] == "sigset_t" || argtype[i] == "gid_t" || argtype[i] == "unsigned int" ||
 591                                                          argtype[i] == "mode_t" || argtype[i] == "key_t" ||
 592                                                          argtype[i] == "mach_port_name_t" || argtype[i] == "au_asid_t" ||
 593                                                          argtype[i] == "sae_associd_t" || argtype[i] == "sae_connid_t") {
 594                                                 munge32 = munge32 "w"
 595                                                 size32 += 4
 596                                         }
 597                                         else if (argtype[i] == "off_t" || argtype[i] == "int64_t" || argtype[i] == "uint64_t") {
 598                                                 munge32 = munge32 "l"
 599                                                 size32 += 8
 600                                         }
 601                                         else {
 602                                                 printf "%s: line %d: invalid type \"%s\" \n",
 603                                                         infile, NR, argtype[i]
 604                                                 printf "You need to add \"%s\" into the type checking code. \n",
 605                                                          argtype[i]
 606                                                 exit 1
 607                                         }
 608                                         if (add_sysproto_entry == 1) {
 609                                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 610                                                         "%s %s; char %s_r_[PADR_(%s)];\n",
 611                                                         argname[i], ext_argtype[i],
 612                                                         ext_argtype[i], argname[i],
 613                                                         argname[i], ext_argtype[i]) > sysarg
 614                                         }
 615                                 }
 616                                 if (add_sysproto_entry == 1) {
 617                                         printf("};\n") > sysarg
 618                                 }
 619                         }
 620                         else if (add_sysproto_entry == 1) {
 621                                 printf("struct %s {\n\tint32_t dummy;\n};\n", argalias) > sysarg
 622                         }
 623                 }
 624
 625                 # output to init_sysent.c
 626                 tempname = funcname
 627                 if (add_sysent_entry == 0) {
 628                         argssize = "0"
 629                         munge32 = "NULL"
 630                         munge_ret = "_SYSCALL_RET_NONE"
 631                         if (tempname != "enosys") {
 632                                 tempname = "nosys"
 633                         }
 634                 }
 635                 else {
 636                         # figure out which return value type to munge
 637                         if (returntype == "user_addr_t") {
 638                                 munge_ret = "_SYSCALL_RET_ADDR_T"
 639                         }
 640                         else if (returntype == "user_ssize_t") {
 641                                 munge_ret = "_SYSCALL_RET_SSIZE_T"
 642                         }
 643                         else if (returntype == "user_size_t") {
 644                                 munge_ret = "_SYSCALL_RET_SIZE_T"
 645                         }
 646                         else if (returntype == "int") {
 647                                 munge_ret = "_SYSCALL_RET_INT_T"
 648                         }
 649                         else if (returntype == "u_int" || returntype == "mach_port_name_t") {
 650                                 munge_ret = "_SYSCALL_RET_UINT_T"
 651                         }
 652                         else if (returntype == "uint32_t") {
 653                                 munge_ret = "_SYSCALL_RET_UINT_T"
 654                         }
 655                         else if (returntype == "uint64_t") {
 656                                 munge_ret = "_SYSCALL_RET_UINT64_T"
 657                         }
 658                         else if (returntype == "off_t") {
 659                                 munge_ret = "_SYSCALL_RET_OFF_T"
 660                         }
 661                         else if (returntype == "void") {
 662                                 munge_ret = "_SYSCALL_RET_NONE"
 663                         }
 664                         else {
 665                                 printf "%s: line %d: invalid return type \"%s\" \n",
 666                                         infile, NR, returntype
 667                                 printf "You need to add \"%s\" into the return type checking code. \n",
 668                                          returntype
 669                                 exit 1
 670                         }
 671                 }
 672
 673                 printf("#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))\n") > sysent
 674                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s, %s},",
 675                                 tempname, munge32, munge_ret, argssize, size32) > sysent
 676                 linesize = length(tempname) + length(munge32) + \
 677                         length(munge_ret) + length(argssize) + length(size32) + 28
 678                 align_comment(linesize, 88, sysent)
 679                 printf("/* %d = %s%s*/\n", syscall_num, funcname, additional_comments) > sysent
 680                 printf("#else\n") > sysent
 681                 printf("\t{ \(sy_call_t *\)%s, %s, %s, %s},\n",
 682                                 tempname, munge_ret, argssize, size32) > sysent
 683                 printf("#endif\n") > sysent
 684
 685                 # output to syscalls.c
 686                 if (add_sysnames_entry == 1) {
 687                         tempname = funcname
 688                         if (substr(tempname, 1, 4) == "sys_") {
 689                                 tempname = substr(tempname, 5)
 690                         }
 691                         if (funcname == "nosys" || funcname == "enosys") {
 692                                 if (syscall_num == 0)
 693                                         tempname = "syscall"
 694                                 else
 695                                         tempname = "#" syscall_num
 696                         }
 697                         printf("\t\"%s\", ", tempname) > syscallnamestempfile
 698                         linesize = length(tempname) + 8
 699                         align_comment(linesize, 25, syscallnamestempfile)
 700                         if (substr(tempname,1,1) == "#") {
 701                                 printf("/* %d =%s*/\n", syscall_num, additional_comments) > syscallnamestempfile
 702                         }
 703                         else {
 704                                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > syscallnamestempfile
 705                         }
 706                 }
 707
 708                 # output to syscalls.h
 709                 if (add_sysheader_entry == 1) {
 710                         tempname = funcname
 711                         if (substr(tempname, 1, 4) == "sys_") {
 712                                 tempname = substr(tempname, 5)
 713                         }
 714                         if (syscall_num == 0) {
 715                                 tempname = "syscall"
 716                         }
 717                         if (tempname != "nosys" && tempname != "enosys") {
 718                                 printf("#define\t%s%s", syscallprefix, tempname) > syshdrtempfile
 719                                 linesize = length(syscallprefix) + length(tempname) + 12
 720                                 align_comment(linesize, 30, syshdrtempfile)
 721                                 printf("%d\n", syscall_num) > syshdrtempfile
 722                         }
 723                         else if (skip_for_header == 0) {
 724                                 printf("\t\t\t/* %d %s*/\n", syscall_num, additional_comments) > syshdrtempfile
 725                         }
 726                 }
 727
 728                 # output function prototypes to sysproto.h
 729                 if (add_sysproto_entry == 1) {
 730                         if (funcname =="exit") {
 731                                 printf("void %s(struct proc *, struct %s *, int32_t *);\n",
 732                                                 funcname, argalias) > sysprotoend
 733                         }
 734                         else if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
 735                                 printf("int %s(struct proc *, struct %s *, %s *);\n",
 736                                                 funcname, argalias, returntype) > sysprotoend
 737                         }
 738                 }
 739
 740                 # output to audit_kevents.c
 741                 printf("\t%s,\t\t", auditev) > audittempfile
 742                 printf("/* %d = %s%s*/\n", syscall_num, tempname, additional_comments) > audittempfile
 743
 744                 tempname = funcname
 745                 if (skip_for_header == 0) {
 746                         if (tempname == "nosys" || tempname == "enosys") {
 747                                 if (obs_comments == "") {
 748                                         printf("0x40c%04x\tBSC_#%d%s\n", (syscall_num*4), syscall_num, obs_comments) > tracecodetempfile
 749                                 } else {
 750                                         printf("0x40c%04x\tBSC%s\n", (syscall_num*4), obs_comments) > tracecodetempfile
 751                                 }
 752                         } else {
 753                                 sub(/^_+/, "", tempname)
 754                                 printf("0x40c%04x\tBSC_%s\n", (syscall_num*4), tempname) > tracecodetempfile
 755                         }
 756                 }
 757
 758                 syscall_num++
 759                 next
 760         }
 761
 762         END {
 763                 printf "#define AC(name) (sizeof(struct name) / sizeof(syscall_arg_t))\n" > sysinc
 764                 printf "\n" > sysinc
 765
 766                 printf("\n__END_DECLS\n") > sysprotoend
 767                 printf("#undef PAD_\n") > sysprotoend
 768                 printf("#undef PADL_\n") > sysprotoend
 769                 printf("#undef PADR_\n") > sysprotoend
 770                 printf "\n#endif /* __APPLE_API_PRIVATE */\n" > sysprotoend
 771                 printf "#endif /* KERNEL */\n" > sysprotoend
 772                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 773
 774                 printf("};\n") > sysent
 775                 printf("const unsigned int nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
 776
 777                 printf("};\n") > syscallnamestempfile
 778                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall_num) \
 779                     > syshdrtempfile
 780                 printf("#define\t%sinvalid\t%d\n", syscallprefix, 63) \
 781                     > syshdrtempfile
 782                 printf("\n#endif /* __APPLE_API_PRIVATE */\n") > syshdrtempfile
 783                 printf("#endif /* !%s */\n", syscall_h) > syshdrtempfile
 784                 printf("};\n\n") > audittempfile
 785                 printf("#endif /* AUDIT */\n") > audittempfile
 786
 787                 printf "\tdefault:\n\t\tbreak;\n\t};\n}\n" > systraceargstempfile
 788                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceargdesctempfile
 789                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracerettempfile
 790         } '
 791
 792 if [ $output_syscalltablefile -eq 1 ]; then
 793     cat $syslegal > $syscalltablefile
 794     cat $sysinc $sysent >> $syscalltablefile
 795 fi
 796
 797 if [ $output_syscallnamesfile -eq 1 ]; then
 798     cat $syslegal $syscallnamestempfile > $syscallnamesfile
 799 fi
 800
 801 if [ $output_sysprotofile -eq 1 ]; then
 802     cat $syslegal $sysarg $sysprotoend > $sysprotofile
 803 fi
 804
 805 if [ $output_syshdrfile -eq 1 ]; then
 806     cat $syslegal $syshdrtempfile > $syshdrfile
 807 fi
 808
 809 if [ $output_auditevfile -eq 1 ]; then
 810     cat $syslegal $audittempfile > $auditevfile
 811 fi
 812
 813 if [ $output_systrace -eq 1 ]; then
 814         cat $systraceargstempfile > $systraceargsfile
 815         cat $systraceargdesctempfile >> $systraceargsfile
 816         cat $systracerettempfile >> $systraceargsfile
 817 fi
 818
 819 if [ $output_tracecodes -eq 1 ]; then
 820         if [ $use_stdout -eq 1 ]; then
 821                 cat $tracecodetempfile
 822         else
 823                 cat $tracecodetempfile > $tracecodename
 824         fi
 825 fi
 826