sys/kern/makesyscalls.sh

   1 #! /bin/sh -
   2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
   3 # $FreeBSD$
   4
   5 set -e
   6
   7 # name of compat options:
   8 compat=COMPAT_43
   9 compat4=COMPAT_FREEBSD4
  10 compat6=COMPAT_FREEBSD6
  11 compat7=COMPAT_FREEBSD7
  12
  13 # output files:
  14 sysnames="syscalls.c"
  15 sysproto="../sys/sysproto.h"
  16 sysproto_h=_SYS_SYSPROTO_H_
  17 syshdr="../sys/syscall.h"
  18 sysmk="../sys/syscall.mk"
  19 syssw="init_sysent.c"
  20 syscallprefix="SYS_"
  21 switchname="sysent"
  22 namesname="syscallnames"
  23 systrace="systrace_args.c"
  24
  25 # tmp files:
  26 sysaue="sysent.aue.$$"
  27 sysdcl="sysent.dcl.$$"
  28 syscompat="sysent.compat.$$"
  29 syscompatdcl="sysent.compatdcl.$$"
  30 syscompat4="sysent.compat4.$$"
  31 syscompat4dcl="sysent.compat4dcl.$$"
  32 syscompat6="sysent.compat6.$$"
  33 syscompat6dcl="sysent.compat6dcl.$$"
  34 syscompat7="sysent.compat7.$$"
  35 syscompat7dcl="sysent.compat7dcl.$$"
  36 sysent="sysent.switch.$$"
  37 sysinc="sysinc.switch.$$"
  38 sysarg="sysarg.switch.$$"
  39 sysprotoend="sysprotoend.$$"
  40 systracetmp="systrace.$$"
  41
  42 if [ -r capabilities.conf ]; then
  43         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
  44         capenabled=`echo $capenabled | sed 's/ /,/g'`
  45 else
  46         capenabled=""
  47 fi
  48
  49 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp" 0
  50
  51 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp
  52
  53 case $# in
  54     0)  echo "usage: $0 input-file <config-file>" 1>&2
  55         exit 1
  56         ;;
  57 esac
  58
  59 if [ -n "$2" -a -f "$2" ]; then
  60         . $2
  61 fi
  62
  63 sed -e '
  64 s/\$//g
  65 :join
  66         /\\$/{a\
  67
  68         N
  69         s/\\\n//
  70         b join
  71         }
  72 2,${
  73         /^#/!s/\([{}()*,]\)/ \1 /g
  74 }
  75 ' < $1 | awk "
  76         BEGIN {
  77                 sysaue = \"$sysaue\"
  78                 sysdcl = \"$sysdcl\"
  79                 sysproto = \"$sysproto\"
  80                 sysprotoend = \"$sysprotoend\"
  81                 sysproto_h = \"$sysproto_h\"
  82                 syscompat = \"$syscompat\"
  83                 syscompatdcl = \"$syscompatdcl\"
  84                 syscompat4 = \"$syscompat4\"
  85                 syscompat4dcl = \"$syscompat4dcl\"
  86                 syscompat6 = \"$syscompat6\"
  87                 syscompat6dcl = \"$syscompat6dcl\"
  88                 syscompat7 = \"$syscompat7\"
  89                 syscompat7dcl = \"$syscompat7dcl\"
  90                 sysent = \"$sysent\"
  91                 syssw = \"$syssw\"
  92                 sysinc = \"$sysinc\"
  93                 sysarg = \"$sysarg\"
  94                 sysnames = \"$sysnames\"
  95                 syshdr = \"$syshdr\"
  96                 sysmk = \"$sysmk\"
  97                 systrace = \"$systrace\"
  98                 systracetmp = \"$systracetmp\"
  99                 compat = \"$compat\"
 100                 compat4 = \"$compat4\"
 101                 compat6 = \"$compat6\"
 102                 compat7 = \"$compat7\"
 103                 syscallprefix = \"$syscallprefix\"
 104                 switchname = \"$switchname\"
 105                 namesname = \"$namesname\"
 106                 infile = \"$1\"
 107                 capenabled_string = \"$capenabled\"
 108                 "'
 109
 110                 split(capenabled_string, capenabled, ",");
 111
 112                 printf "/*\n * System call switch table.\n *\n" > syssw
 113                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
 114                 printf " * $%s$\n", "FreeBSD" > syssw
 115
 116                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 117                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
 118                 printf " * $%s$\n", "FreeBSD" > sysarg
 119
 120                 printf "\n#ifdef %s\n\n", compat > syscompat
 121                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 122                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 123                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 124
 125                 printf "/*\n * System call names.\n *\n" > sysnames
 126                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 127                 printf " * $%s$\n", "FreeBSD" > sysnames
 128
 129                 printf "/*\n * System call numbers.\n *\n" > syshdr
 130                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 131                 printf " * $%s$\n", "FreeBSD" > syshdr
 132                 printf "# FreeBSD system call names.\n" > sysmk
 133                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 134                 printf "# $%s$\n", "FreeBSD" > sysmk
 135
 136                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 137                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
 138                 printf " * $%s$\n", "FreeBSD" > systrace
 139         }
 140         NR == 1 {
 141                 gsub("[$]FreeBSD: ", "", $0)
 142                 gsub(" [$]", "", $0)
 143
 144                 printf " * created from%s\n */\n\n", $0 > syssw
 145
 146                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 147                 printf "struct sysent %s[] = {\n",switchname > sysent
 148
 149                 printf " * created from%s\n */\n\n", $0 > sysarg
 150                 printf "#ifndef %s\n", sysproto_h > sysarg
 151                 printf "#define\t%s\n\n", sysproto_h > sysarg
 152                 printf "#include <sys/signal.h>\n" > sysarg
 153                 printf "#include <sys/acl.h>\n" > sysarg
 154                 printf "#include <sys/cpuset.h>\n" > sysarg
 155                 printf "#include <sys/_semaphore.h>\n" > sysarg
 156                 printf "#include <sys/ucontext.h>\n" > sysarg
 157                 printf "#include <sys/wait.h>\n\n" > sysarg
 158                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 159                 printf "struct proc;\n\n" > sysarg
 160                 printf "struct thread;\n\n" > sysarg
 161                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 162                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 163                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 164                 printf "#define\tPADL_(t)\t0\n" > sysarg
 165                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 166                 printf "#else\n" > sysarg
 167                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 168                 printf "#define\tPADR_(t)\t0\n" > sysarg
 169                 printf "#endif\n\n" > sysarg
 170
 171                 printf " * created from%s\n */\n\n", $0 > sysnames
 172                 printf "const char *%s[] = {\n", namesname > sysnames
 173
 174                 printf " * created from%s\n */\n\n", $0 > syshdr
 175
 176                 printf "# created from%s\nMIASM = ", $0 > sysmk
 177
 178                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 179                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
 180                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 181                 printf "\tswitch (sysnum) {\n" > systrace
 182
 183                 printf "static void\nsystrace_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 184                 printf "\tswitch (sysnum) {\n" > systracetmp
 185
 186                 next
 187         }
 188         NF == 0 || $1 ~ /^;/ {
 189                 next
 190         }
 191         $1 ~ /^#[       ]*include/ {
 192                 print > sysinc
 193                 next
 194         }
 195         $1 ~ /^#[       ]*if/ {
 196                 print > sysent
 197                 print > sysdcl
 198                 print > sysarg
 199                 print > syscompat
 200                 print > syscompat4
 201                 print > syscompat6
 202                 print > syscompat7
 203                 print > sysnames
 204                 print > systrace
 205                 print > systracetmp
 206                 savesyscall = syscall
 207                 next
 208         }
 209         $1 ~ /^#[       ]*else/ {
 210                 print > sysent
 211                 print > sysdcl
 212                 print > sysarg
 213                 print > syscompat
 214                 print > syscompat4
 215                 print > syscompat6
 216                 print > syscompat7
 217                 print > sysnames
 218                 print > systrace
 219                 print > systracetmp
 220                 syscall = savesyscall
 221                 next
 222         }
 223         $1 ~ /^#/ {
 224                 print > sysent
 225                 print > sysdcl
 226                 print > sysarg
 227                 print > syscompat
 228                 print > syscompat4
 229                 print > syscompat6
 230                 print > syscompat7
 231                 print > sysnames
 232                 print > systrace
 233                 print > systracetmp
 234                 next
 235         }
 236         syscall != $1 {
 237                 printf "%s: line %d: syscall number out of sync at %d\n",
 238                     infile, NR, syscall
 239                 printf "line is:\n"
 240                 print
 241                 exit 1
 242         }
 243         # Returns true if the type "name" is the first flag in the type field
 244         function type(name, flags, n) {
 245                 n = split($3, flags, /\|/)
 246                 return (n > 0 && flags[1] == name)
 247         }
 248         # Returns true if the flag "name" is set in the type field
 249         function flag(name, flags, i, n) {
 250                 n = split($3, flags, /\|/)
 251                 for (i = 1; i <= n; i++)
 252                         if (flags[i] == name)
 253                                 return 1
 254                 return 0
 255         }
 256         function align_sysent_comment(column) {
 257                 printf("\t") > sysent
 258                 column = column + 8 - column % 8
 259                 while (column < 56) {
 260                         printf("\t") > sysent
 261                         column = column + 8
 262                 }
 263         }
 264         function parserr(was, wanted) {
 265                 printf "%s: line %d: unexpected %s (expected %s)\n",
 266                     infile, NR, was, wanted
 267                 exit 1
 268         }
 269         function parseline() {
 270                 f=4                     # toss number, type, audit event
 271                 argc= 0;
 272                 argssize = "0"
 273                 thr_flag = "SY_THR_STATIC"
 274                 if (flag("NOTSTATIC")) {
 275                         thr_flag = "SY_THR_ABSENT"
 276                 }
 277                 if ($NF != "}") {
 278                         funcalias=$(NF-2)
 279                         argalias=$(NF-1)
 280                         rettype=$NF
 281                         end=NF-3
 282                 } else {
 283                         funcalias=""
 284                         argalias=""
 285                         rettype="int"
 286                         end=NF
 287                 }
 288                 if (flag("NODEF")) {
 289                         auditev="AUE_NULL"
 290                         funcname=$4
 291                         argssize = "AS(" $6 ")"
 292                         return
 293                 }
 294                 if ($f != "{")
 295                         parserr($f, "{")
 296                 f++
 297                 if ($end != "}")
 298                         parserr($end, "}")
 299                 end--
 300                 if ($end != ";")
 301                         parserr($end, ";")
 302                 end--
 303                 if ($end != ")")
 304                         parserr($end, ")")
 305                 end--
 306
 307                 f++     #function return type
 308
 309                 funcname=$f
 310
 311                 #
 312                 # We now know the func name, so define a flags field for it.
 313                 # Do this before any other processing as we may return early
 314                 # from it.
 315                 #
 316                 for (cap in capenabled) {
 317                         if (funcname == capenabled[cap]) {
 318                                 flags = "SYF_CAPENABLED";
 319                         }
 320                 }
 321
 322                 if (funcalias == "")
 323                         funcalias = funcname
 324                 if (argalias == "") {
 325                         argalias = funcname "_args"
 326                         if (flag("COMPAT"))
 327                                 argalias = "o" argalias
 328                         if (flag("COMPAT4"))
 329                                 argalias = "freebsd4_" argalias
 330                         if (flag("COMPAT6"))
 331                                 argalias = "freebsd6_" argalias
 332                         if (flag("COMPAT7"))
 333                                 argalias = "freebsd7_" argalias
 334                 }
 335                 f++
 336
 337                 if ($f != "(")
 338                         parserr($f, ")")
 339                 f++
 340
 341                 if (f == end) {
 342                         if ($f != "void")
 343                                 parserr($f, "argument definition")
 344                         return
 345                 }
 346
 347                 while (f <= end) {
 348                         argc++
 349                         argtype[argc]=""
 350                         oldf=""
 351                         while (f < end && $(f+1) != ",") {
 352                                 if (argtype[argc] != "" && oldf != "*")
 353                                         argtype[argc] = argtype[argc]" ";
 354                                 argtype[argc] = argtype[argc]$f;
 355                                 oldf = $f;
 356                                 f++
 357                         }
 358                         if (argtype[argc] == "")
 359                                 parserr($f, "argument definition")
 360                         argname[argc]=$f;
 361                         f += 2;                 # skip name, and any comma
 362                 }
 363                 if (argc != 0)
 364                         argssize = "AS(" argalias ")"
 365         }
 366         {       comment = $4
 367                 if (NF < 7)
 368                         for (i = 5; i <= NF; i++)
 369                                 comment = comment " " $i
 370         }
 371
 372         #
 373         # The AUE_ audit event identifier.
 374         #
 375         {
 376                 auditev = $2;
 377         }
 378
 379         #
 380         # The flags, if any.
 381         #
 382         {
 383                 flags = "0";
 384         }
 385
 386         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 387             || type("NOSTD") {
 388                 parseline()
 389                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 390                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 391                 if (argc > 0) {
 392                         printf("\t\tswitch(ndx) {\n") > systracetmp
 393                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 394                         for (i = 1; i <= argc; i++) {
 395                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, argtype[i]) > systracetmp
 396                                 if (index(argtype[i], "*") > 0 || argtype[i] == "caddr_t")
 397                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 398                                              i - 1, \
 399                                              argname[i], argtype[i]) > systrace
 400                                 else if (substr(argtype[i], 1, 1) == "u" || argtype[i] == "size_t")
 401                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 402                                              i - 1, \
 403                                              argname[i], argtype[i]) > systrace
 404                                 else
 405                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 406                                              i - 1, \
 407                                              argname[i], argtype[i]) > systrace
 408                         }
 409                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 410                 }
 411                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 412                 printf("\t\tbreak;\n") > systracetmp
 413                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 414                     !flag("NODEF")) {
 415                         printf("struct %s {\n", argalias) > sysarg
 416                         for (i = 1; i <= argc; i++)
 417                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 418                                     "%s %s; char %s_r_[PADR_(%s)];\n",
 419                                     argname[i], argtype[i],
 420                                     argtype[i], argname[i],
 421                                     argname[i], argtype[i]) > sysarg
 422                         printf("};\n") > sysarg
 423                 }
 424                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 425                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 426                             argalias) > sysarg
 427                 if (!flag("NOPROTO") && !flag("NODEF")) {
 428                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 429                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 430                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 431                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 432                                 printf("%s\t%s(struct thread *, struct %s *)",
 433                                     rettype, funcname, argalias) > sysdcl
 434                         } else {
 435                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 436                                     rettype, funcname, argalias) > sysdcl
 437                         }
 438                         printf(";\n") > sysdcl
 439                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 440                             funcalias, auditev) > sysaue
 441                 }
 442                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 443                 column = 8 + 2 + length(argssize) + 15
 444                 if (flag("NOSTD")) {
 445                         printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
 446                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 447                 } else {
 448                         if (funcname == "nosys" || funcname == "sysarch" ||
 449                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 450                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 451                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 452                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 453                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 454                         } else {
 455                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 456                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 457                         }
 458                 }
 459                 align_sysent_comment(column)
 460                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 461                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 462                     funcalias, syscall, funcalias) > sysnames
 463                 if (!flag("NODEF")) {
 464                         printf("#define\t%s%s\t%d\n", syscallprefix,
 465                             funcalias, syscall) > syshdr
 466                         printf(" \\\n\t%s.o", funcalias) > sysmk
 467                 }
 468                 syscall++
 469                 next
 470         }
 471         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 472             type("COMPAT7") {
 473                 if (flag("COMPAT")) {
 474                         ncompat++
 475                         out = syscompat
 476                         outdcl = syscompatdcl
 477                         wrap = "compat"
 478                         prefix = "o"
 479                         descr = "old"
 480                 } else if (flag("COMPAT4")) {
 481                         ncompat4++
 482                         out = syscompat4
 483                         outdcl = syscompat4dcl
 484                         wrap = "compat4"
 485                         prefix = "freebsd4_"
 486                         descr = "freebsd4"
 487                 } else if (flag("COMPAT6")) {
 488                         ncompat6++
 489                         out = syscompat6
 490                         outdcl = syscompat6dcl
 491                         wrap = "compat6"
 492                         prefix = "freebsd6_"
 493                         descr = "freebsd6"
 494                 } else if (flag("COMPAT7")) {
 495                         ncompat7++
 496                         out = syscompat7
 497                         outdcl = syscompat7dcl
 498                         wrap = "compat7"
 499                         prefix = "freebsd7_"
 500                         descr = "freebsd7"
 501                 }
 502                 parseline()
 503                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 504                     !flag("NODEF")) {
 505                         printf("struct %s {\n", argalias) > out
 506                         for (i = 1; i <= argc; i++)
 507                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 508                                     "char %s_r_[PADR_(%s)];\n",
 509                                     argname[i], argtype[i],
 510                                     argtype[i], argname[i],
 511                                     argname[i], argtype[i]) > out
 512                         printf("};\n") > out
 513                 }
 514                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 515                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 516                             argalias) > sysarg
 517                 if (!flag("NOPROTO") && !flag("NODEF")) {
 518                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 519                             rettype, prefix, funcname, argalias) > outdcl
 520                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 521                             prefix, funcname, auditev) > sysaue
 522                 }
 523                 if (flag("NOSTD")) {
 524                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 525                             "0", "lkmressys", "AUE_NULL") > sysent
 526                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 527                             length("lkmressys") + length("AUE_NULL") + 3)
 528                 } else {
 529                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 530                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 531                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 532                             length(funcname) + length(auditev) + \
 533                             length(flags) + 4)
 534                 }
 535                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 536                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 537                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 538                 if (flag("COMPAT")) {
 539                         printf("\t\t\t\t/* %d is old %s */\n",
 540                             syscall, funcalias) > syshdr
 541                 } else if (!flag("NODEF")) {
 542                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 543                             prefix, funcalias, syscall) > syshdr
 544                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 545                 }
 546                 syscall++
 547                 next
 548         }
 549         type("OBSOL") {
 550                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 551                 align_sysent_comment(34)
 552                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 553                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 554                     $4, syscall, comment) > sysnames
 555                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 556                     syscall, comment) > syshdr
 557                 syscall++
 558                 next
 559         }
 560         type("UNIMPL") {
 561                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 562                     syscall, comment) > sysent
 563                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 564                     syscall, syscall, comment) > sysnames
 565                 syscall++
 566                 next
 567         }
 568         {
 569                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 570                 exit 1
 571         }
 572         END {
 573                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 574
 575                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
 576                         printf "#include \"opt_compat.h\"\n\n" > syssw
 577
 578                 if (ncompat != 0) {
 579                         printf "\n#ifdef %s\n", compat > sysinc
 580                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 581                         printf "#else\n" > sysinc
 582                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 583                         printf "#endif\n" > sysinc
 584                 }
 585
 586                 if (ncompat4 != 0) {
 587                         printf "\n#ifdef %s\n", compat4 > sysinc
 588                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 589                         printf "#else\n" > sysinc
 590                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 591                         printf "#endif\n" > sysinc
 592                 }
 593
 594                 if (ncompat6 != 0) {
 595                         printf "\n#ifdef %s\n", compat6 > sysinc
 596                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 597                         printf "#else\n" > sysinc
 598                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 599                         printf "#endif\n" > sysinc
 600                 }
 601
 602                 if (ncompat7 != 0) {
 603                         printf "\n#ifdef %s\n", compat7 > sysinc
 604                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 605                         printf "#else\n" > sysinc
 606                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 607                         printf "#endif\n" > sysinc
 608                 }
 609
 610                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 611                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 612                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 613                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 614
 615                 printf("\n#undef PAD_\n") > sysprotoend
 616                 printf("#undef PADL_\n") > sysprotoend
 617                 printf("#undef PADR_\n") > sysprotoend
 618                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 619
 620                 printf("\n") > sysmk
 621                 printf("};\n") > sysent
 622                 printf("};\n") > sysnames
 623                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 624                     > syshdr
 625                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 626                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 627         } '
 628
 629 cat $sysinc $sysent >> $syssw
 630 cat $sysarg $sysdcl \
 631         $syscompat $syscompatdcl \
 632         $syscompat4 $syscompat4dcl \
 633         $syscompat6 $syscompat6dcl \
 634         $syscompat7 $syscompat7dcl \
 635         $sysaue $sysprotoend > $sysproto
 636 cat $systracetmp >> $systrace
 637