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 compat10=COMPAT_FREEBSD10
  13
  14 # output files:
  15 sysnames="syscalls.c"
  16 sysproto="../sys/sysproto.h"
  17 sysproto_h=_SYS_SYSPROTO_H_
  18 syshdr="../sys/syscall.h"
  19 sysmk="../sys/syscall.mk"
  20 syssw="init_sysent.c"
  21 syscallprefix="SYS_"
  22 switchname="sysent"
  23 namesname="syscallnames"
  24 systrace="systrace_args.c"
  25
  26 # tmp files:
  27 sysaue="sysent.aue.$$"
  28 sysdcl="sysent.dcl.$$"
  29 syscompat="sysent.compat.$$"
  30 syscompatdcl="sysent.compatdcl.$$"
  31 syscompat4="sysent.compat4.$$"
  32 syscompat4dcl="sysent.compat4dcl.$$"
  33 syscompat6="sysent.compat6.$$"
  34 syscompat6dcl="sysent.compat6dcl.$$"
  35 syscompat7="sysent.compat7.$$"
  36 syscompat7dcl="sysent.compat7dcl.$$"
  37 syscompat10="sysent.compat10.$$"
  38 syscompat10dcl="sysent.compat10dcl.$$"
  39 sysent="sysent.switch.$$"
  40 sysinc="sysinc.switch.$$"
  41 sysarg="sysarg.switch.$$"
  42 sysprotoend="sysprotoend.$$"
  43 systracetmp="systrace.$$"
  44 systraceret="systraceret.$$"
  45
  46 if [ -r capabilities.conf ]; then
  47         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
  48         capenabled=`echo $capenabled | sed 's/ /,/g'`
  49 else
  50         capenabled=""
  51 fi
  52
  53 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
  54
  55 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
  56
  57 case $# in
  58     0)  echo "usage: $0 input-file <config-file>" 1>&2
  59         exit 1
  60         ;;
  61 esac
  62
  63 if [ -n "$2" ]; then
  64         . $2
  65 fi
  66
  67 sed -e '
  68 :join
  69         /\\$/{a\
  70
  71         N
  72         s/\\\n//
  73         b join
  74         }
  75 2,${
  76         /^#/!s/\([{}()*,]\)/ \1 /g
  77 }
  78 ' < $1 | awk "
  79         BEGIN {
  80                 sysaue = \"$sysaue\"
  81                 sysdcl = \"$sysdcl\"
  82                 sysproto = \"$sysproto\"
  83                 sysprotoend = \"$sysprotoend\"
  84                 sysproto_h = \"$sysproto_h\"
  85                 syscompat = \"$syscompat\"
  86                 syscompatdcl = \"$syscompatdcl\"
  87                 syscompat4 = \"$syscompat4\"
  88                 syscompat4dcl = \"$syscompat4dcl\"
  89                 syscompat6 = \"$syscompat6\"
  90                 syscompat6dcl = \"$syscompat6dcl\"
  91                 syscompat7 = \"$syscompat7\"
  92                 syscompat7dcl = \"$syscompat7dcl\"
  93                 syscompat10 = \"$syscompat10\"
  94                 syscompat10dcl = \"$syscompat10dcl\"
  95                 sysent = \"$sysent\"
  96                 syssw = \"$syssw\"
  97                 sysinc = \"$sysinc\"
  98                 sysarg = \"$sysarg\"
  99                 sysnames = \"$sysnames\"
 100                 syshdr = \"$syshdr\"
 101                 sysmk = \"$sysmk\"
 102                 systrace = \"$systrace\"
 103                 systracetmp = \"$systracetmp\"
 104                 systraceret = \"$systraceret\"
 105                 compat = \"$compat\"
 106                 compat4 = \"$compat4\"
 107                 compat6 = \"$compat6\"
 108                 compat7 = \"$compat7\"
 109                 compat10 = \"$compat10\"
 110                 syscallprefix = \"$syscallprefix\"
 111                 switchname = \"$switchname\"
 112                 namesname = \"$namesname\"
 113                 infile = \"$1\"
 114                 capenabled_string = \"$capenabled\"
 115                 "'
 116
 117                 split(capenabled_string, capenabled, ",");
 118
 119                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 120                 printf "struct sysent %s[] = {\n",switchname > sysent
 121
 122                 printf "/*\n * System call switch table.\n *\n" > syssw
 123                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
 124                 printf " * $%s$\n", "FreeBSD" > syssw
 125                 printf " */\n\n" > syssw
 126
 127                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 128                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
 129                 printf " * $%s$\n", "FreeBSD" > sysarg
 130                 printf " */\n\n" > sysarg
 131                 printf "#ifndef %s\n", sysproto_h > sysarg
 132                 printf "#define\t%s\n\n", sysproto_h > sysarg
 133                 printf "#include <sys/signal.h>\n" > sysarg
 134                 printf "#include <sys/acl.h>\n" > sysarg
 135                 printf "#include <sys/cpuset.h>\n" > sysarg
 136                 printf "#include <sys/_ffcounter.h>\n" > sysarg
 137                 printf "#include <sys/_semaphore.h>\n" > sysarg
 138                 printf "#include <sys/ucontext.h>\n" > sysarg
 139                 printf "#include <sys/wait.h>\n\n" > sysarg
 140                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 141                 printf "struct proc;\n\n" > sysarg
 142                 printf "struct thread;\n\n" > sysarg
 143                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 144                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 145                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 146                 printf "#define\tPADL_(t)\t0\n" > sysarg
 147                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 148                 printf "#else\n" > sysarg
 149                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 150                 printf "#define\tPADR_(t)\t0\n" > sysarg
 151                 printf "#endif\n\n" > sysarg
 152
 153                 printf "\n#ifdef %s\n\n", compat > syscompat
 154                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 155                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 156                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 157                 printf "\n#ifdef %s\n\n", compat10 > syscompat10
 158
 159                 printf "/*\n * System call names.\n *\n" > sysnames
 160                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 161                 printf " * $%s$\n", "FreeBSD" > sysnames
 162                 printf " */\n\n" > sysnames
 163                 printf "const char *%s[] = {\n", namesname > sysnames
 164
 165                 printf "/*\n * System call numbers.\n *\n" > syshdr
 166                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 167                 printf " * $%s$\n", "FreeBSD" > syshdr
 168                 printf " */\n\n" > syshdr
 169
 170                 printf "# FreeBSD system call object files.\n" > sysmk
 171                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 172                 printf "# $%s$\n", "FreeBSD" > sysmk
 173                 printf "MIASM = " > sysmk
 174
 175                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 176                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
 177                 printf " * $%s$\n", "FreeBSD" > systrace
 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_entry_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                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
 187                 printf "\tswitch (sysnum) {\n" > systraceret
 188         }
 189         NR == 1 {
 190                 next
 191         }
 192         NF == 0 || $1 ~ /^;/ {
 193                 next
 194         }
 195         $1 ~ /^#[       ]*include/ {
 196                 print > sysinc
 197                 next
 198         }
 199         $1 ~ /^#[       ]*if/ {
 200                 print > sysent
 201                 print > sysdcl
 202                 print > sysarg
 203                 print > syscompat
 204                 print > syscompat4
 205                 print > syscompat6
 206                 print > syscompat7
 207                 print > syscompat10
 208                 print > sysnames
 209                 print > systrace
 210                 print > systracetmp
 211                 print > systraceret
 212                 savesyscall = syscall
 213                 next
 214         }
 215         $1 ~ /^#[       ]*else/ {
 216                 print > sysent
 217                 print > sysdcl
 218                 print > sysarg
 219                 print > syscompat
 220                 print > syscompat4
 221                 print > syscompat6
 222                 print > syscompat7
 223                 print > syscompat10
 224                 print > sysnames
 225                 print > systrace
 226                 print > systracetmp
 227                 print > systraceret
 228                 syscall = savesyscall
 229                 next
 230         }
 231         $1 ~ /^#/ {
 232                 print > sysent
 233                 print > sysdcl
 234                 print > sysarg
 235                 print > syscompat
 236                 print > syscompat4
 237                 print > syscompat6
 238                 print > syscompat7
 239                 print > syscompat10
 240                 print > sysnames
 241                 print > systrace
 242                 print > systracetmp
 243                 print > systraceret
 244                 next
 245         }
 246         syscall != $1 {
 247                 printf "%s: line %d: syscall number out of sync at %d\n",
 248                     infile, NR, syscall
 249                 printf "line is:\n"
 250                 print
 251                 exit 1
 252         }
 253         # Returns true if the type "name" is the first flag in the type field
 254         function type(name, flags, n) {
 255                 n = split($3, flags, /\|/)
 256                 return (n > 0 && flags[1] == name)
 257         }
 258         # Returns true if the flag "name" is set in the type field
 259         function flag(name, flags, i, n) {
 260                 n = split($3, flags, /\|/)
 261                 for (i = 1; i <= n; i++)
 262                         if (flags[i] == name)
 263                                 return 1
 264                 return 0
 265         }
 266         function align_sysent_comment(column) {
 267                 printf("\t") > sysent
 268                 column = column + 8 - column % 8
 269                 while (column < 56) {
 270                         printf("\t") > sysent
 271                         column = column + 8
 272                 }
 273         }
 274         function parserr(was, wanted) {
 275                 printf "%s: line %d: unexpected %s (expected %s)\n",
 276                     infile, NR, was, wanted
 277                 exit 1
 278         }
 279         function parseline() {
 280                 f=4                     # toss number, type, audit event
 281                 argc= 0;
 282                 argssize = "0"
 283                 thr_flag = "SY_THR_STATIC"
 284                 if (flag("NOTSTATIC")) {
 285                         thr_flag = "SY_THR_ABSENT"
 286                 }
 287                 if ($NF != "}") {
 288                         funcalias=$(NF-2)
 289                         argalias=$(NF-1)
 290                         rettype=$NF
 291                         end=NF-3
 292                 } else {
 293                         funcalias=""
 294                         argalias=""
 295                         rettype="int"
 296                         end=NF
 297                 }
 298                 if (flag("NODEF")) {
 299                         auditev="AUE_NULL"
 300                         funcname=$4
 301                         argssize = "AS(" $6 ")"
 302                         return
 303                 }
 304                 if ($f != "{")
 305                         parserr($f, "{")
 306                 f++
 307                 if ($end != "}")
 308                         parserr($end, "}")
 309                 end--
 310                 if ($end != ";")
 311                         parserr($end, ";")
 312                 end--
 313                 if ($end != ")")
 314                         parserr($end, ")")
 315                 end--
 316
 317                 syscallret=$f
 318                 f++
 319
 320                 funcname=$f
 321
 322                 #
 323                 # We now know the func name, so define a flags field for it.
 324                 # Do this before any other processing as we may return early
 325                 # from it.
 326                 #
 327                 for (cap in capenabled) {
 328                         if (funcname == capenabled[cap]) {
 329                                 flags = "SYF_CAPENABLED";
 330                                 break;
 331                         }
 332                 }
 333
 334                 if (funcalias == "")
 335                         funcalias = funcname
 336                 if (argalias == "") {
 337                         argalias = funcname "_args"
 338                         if (flag("COMPAT"))
 339                                 argalias = "o" argalias
 340                         if (flag("COMPAT4"))
 341                                 argalias = "freebsd4_" argalias
 342                         if (flag("COMPAT6"))
 343                                 argalias = "freebsd6_" argalias
 344                         if (flag("COMPAT7"))
 345                                 argalias = "freebsd7_" argalias
 346                         if (flag("COMPAT10"))
 347                                 argalias = "freebsd10_" argalias
 348                 }
 349                 f++
 350
 351                 if ($f != "(")
 352                         parserr($f, ")")
 353                 f++
 354
 355                 if (f == end) {
 356                         if ($f != "void")
 357                                 parserr($f, "argument definition")
 358                         return
 359                 }
 360
 361                 while (f <= end) {
 362                         argc++
 363                         argtype[argc]=""
 364                         oldf=""
 365                         while (f < end && $(f+1) != ",") {
 366                                 if (argtype[argc] != "" && oldf != "*")
 367                                         argtype[argc] = argtype[argc]" ";
 368                                 argtype[argc] = argtype[argc]$f;
 369                                 oldf = $f;
 370                                 f++
 371                         }
 372                         if (argtype[argc] == "")
 373                                 parserr($f, "argument definition")
 374                         argname[argc]=$f;
 375                         f += 2;                 # skip name, and any comma
 376                 }
 377                 if (argc != 0)
 378                         argssize = "AS(" argalias ")"
 379         }
 380         {       comment = $4
 381                 if (NF < 7)
 382                         for (i = 5; i <= NF; i++)
 383                                 comment = comment " " $i
 384         }
 385
 386         #
 387         # The AUE_ audit event identifier.
 388         #
 389         {
 390                 auditev = $2;
 391         }
 392
 393         #
 394         # The flags, if any.
 395         #
 396         {
 397                 flags = "0";
 398         }
 399
 400         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 401             || type("NOSTD") {
 402                 parseline()
 403                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 404                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 405                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
 406                 if (argc > 0) {
 407                         printf("\t\tswitch(ndx) {\n") > systracetmp
 408                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 409                         for (i = 1; i <= argc; i++) {
 410                                 arg = argtype[i]
 411                                 sub("__restrict$", "", arg)
 412                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 413                                 if (index(arg, "*") > 0 || arg == "caddr_t")
 414                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 415                                              i - 1, \
 416                                              argname[i], arg) > systrace
 417                                 else if (arg == "union l_semun")
 418                                         printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
 419                                              i - 1, \
 420                                              argname[i], arg) > systrace
 421                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 422                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 423                                              i - 1, \
 424                                              argname[i], arg) > systrace
 425                                 else
 426                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 427                                              i - 1, \
 428                                              argname[i], arg) > systrace
 429                         }
 430                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 431
 432                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
 433                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
 434                         printf("\t\tbreak;\n") > systraceret
 435                 }
 436                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 437                 printf("\t\tbreak;\n") > systracetmp
 438                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 439                     !flag("NODEF")) {
 440                         printf("struct %s {\n", argalias) > sysarg
 441                         for (i = 1; i <= argc; i++)
 442                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 443                                     "%s %s; char %s_r_[PADR_(%s)];\n",
 444                                     argname[i], argtype[i],
 445                                     argtype[i], argname[i],
 446                                     argname[i], argtype[i]) > sysarg
 447                         printf("};\n") > sysarg
 448                 }
 449                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 450                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 451                             argalias) > sysarg
 452                 if (!flag("NOPROTO") && !flag("NODEF")) {
 453                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 454                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 455                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 456                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
 457                             funcname ~ /^cloudabi/) {
 458                                 printf("%s\t%s(struct thread *, struct %s *)",
 459                                     rettype, funcname, argalias) > sysdcl
 460                         } else {
 461                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 462                                     rettype, funcname, argalias) > sysdcl
 463                         }
 464                         printf(";\n") > sysdcl
 465                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 466                             funcalias, auditev) > sysaue
 467                 }
 468                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 469                 column = 8 + 2 + length(argssize) + 15
 470                 if (flag("NOSTD")) {
 471                         printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
 472                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 473                 } else {
 474                         if (funcname == "nosys" || funcname == "sysarch" ||
 475                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 476                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 477                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
 478                             funcname ~ /^cloudabi/) {
 479                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 480                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 481                         } else {
 482                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 483                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 484                         }
 485                 }
 486                 align_sysent_comment(column)
 487                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 488                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 489                     funcalias, syscall, funcalias) > sysnames
 490                 if (!flag("NODEF")) {
 491                         printf("#define\t%s%s\t%d\n", syscallprefix,
 492                             funcalias, syscall) > syshdr
 493                         printf(" \\\n\t%s.o", funcalias) > sysmk
 494                 }
 495                 syscall++
 496                 next
 497         }
 498         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 499             type("COMPAT7") || type("COMPAT10") {
 500                 if (flag("COMPAT")) {
 501                         ncompat++
 502                         out = syscompat
 503                         outdcl = syscompatdcl
 504                         wrap = "compat"
 505                         prefix = "o"
 506                         descr = "old"
 507                 } else if (flag("COMPAT4")) {
 508                         ncompat4++
 509                         out = syscompat4
 510                         outdcl = syscompat4dcl
 511                         wrap = "compat4"
 512                         prefix = "freebsd4_"
 513                         descr = "freebsd4"
 514                 } else if (flag("COMPAT6")) {
 515                         ncompat6++
 516                         out = syscompat6
 517                         outdcl = syscompat6dcl
 518                         wrap = "compat6"
 519                         prefix = "freebsd6_"
 520                         descr = "freebsd6"
 521                 } else if (flag("COMPAT7")) {
 522                         ncompat7++
 523                         out = syscompat7
 524                         outdcl = syscompat7dcl
 525                         wrap = "compat7"
 526                         prefix = "freebsd7_"
 527                         descr = "freebsd7"
 528                 } else if (flag("COMPAT10")) {
 529                         ncompat10++
 530                         out = syscompat10
 531                         outdcl = syscompat10dcl
 532                         wrap = "compat10"
 533                         prefix = "freebsd10_"
 534                         descr = "freebsd10"
 535                 }
 536                 parseline()
 537                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 538                     !flag("NODEF")) {
 539                         printf("struct %s {\n", argalias) > out
 540                         for (i = 1; i <= argc; i++)
 541                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 542                                     "char %s_r_[PADR_(%s)];\n",
 543                                     argname[i], argtype[i],
 544                                     argtype[i], argname[i],
 545                                     argname[i], argtype[i]) > out
 546                         printf("};\n") > out
 547                 }
 548                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 549                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 550                             argalias) > sysarg
 551                 if (!flag("NOPROTO") && !flag("NODEF")) {
 552                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 553                             rettype, prefix, funcname, argalias) > outdcl
 554                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 555                             prefix, funcname, auditev) > sysaue
 556                 }
 557                 if (flag("NOSTD")) {
 558                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 559                             "0", "lkmressys", "AUE_NULL") > sysent
 560                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 561                             length("lkmressys") + length("AUE_NULL") + 3)
 562                 } else {
 563                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 564                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 565                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 566                             length(funcname) + length(auditev) + \
 567                             length(flags) + 4)
 568                 }
 569                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 570                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 571                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 572                 # Do not provide freebsdN_* symbols in libc for < FreeBSD 7
 573                 if (flag("COMPAT") || flag("COMPAT4") || flag("COMPAT6")) {
 574                         printf("\t\t\t\t/* %d is %s %s */\n",
 575                             syscall, descr, funcalias) > syshdr
 576                 } else if (!flag("NODEF")) {
 577                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 578                             prefix, funcalias, syscall) > syshdr
 579                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 580                 }
 581                 syscall++
 582                 next
 583         }
 584         type("OBSOL") {
 585                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 586                 align_sysent_comment(34)
 587                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 588                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 589                     $4, syscall, comment) > sysnames
 590                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 591                     syscall, comment) > syshdr
 592                 syscall++
 593                 next
 594         }
 595         type("UNIMPL") {
 596                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 597                     syscall, comment) > sysent
 598                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 599                     syscall, syscall, comment) > sysnames
 600                 syscall++
 601                 next
 602         }
 603         {
 604                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 605                 exit 1
 606         }
 607         END {
 608                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 609
 610                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0 || ncompat10 != 0)
 611                         printf "#include \"opt_compat.h\"\n\n" > syssw
 612
 613                 if (ncompat != 0) {
 614                         printf "\n#ifdef %s\n", compat > sysinc
 615                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 616                         printf "#else\n" > sysinc
 617                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 618                         printf "#endif\n" > sysinc
 619                 }
 620
 621                 if (ncompat4 != 0) {
 622                         printf "\n#ifdef %s\n", compat4 > sysinc
 623                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 624                         printf "#else\n" > sysinc
 625                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 626                         printf "#endif\n" > sysinc
 627                 }
 628
 629                 if (ncompat6 != 0) {
 630                         printf "\n#ifdef %s\n", compat6 > sysinc
 631                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 632                         printf "#else\n" > sysinc
 633                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 634                         printf "#endif\n" > sysinc
 635                 }
 636
 637                 if (ncompat7 != 0) {
 638                         printf "\n#ifdef %s\n", compat7 > sysinc
 639                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 640                         printf "#else\n" > sysinc
 641                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 642                         printf "#endif\n" > sysinc
 643                 }
 644                 if (ncompat10 != 0) {
 645                         printf "\n#ifdef %s\n", compat10 > sysinc
 646                         printf "#define compat10(n, name) n, (sy_call_t *)__CONCAT(freebsd10_,name)\n" > sysinc
 647                         printf "#else\n" > sysinc
 648                         printf "#define compat10(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 649                         printf "#endif\n" > sysinc
 650                 }
 651                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 652                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 653                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 654                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 655                 printf("\n#endif /* %s */\n\n", compat10) > syscompat10dcl
 656
 657                 printf("\n#undef PAD_\n") > sysprotoend
 658                 printf("#undef PADL_\n") > sysprotoend
 659                 printf("#undef PADR_\n") > sysprotoend
 660                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 661
 662                 printf("\n") > sysmk
 663                 printf("};\n") > sysent
 664                 printf("};\n") > sysnames
 665                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 666                     > syshdr
 667                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 668                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 669                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
 670         } '
 671
 672 cat $sysinc $sysent >> $syssw
 673 cat $sysarg $sysdcl \
 674         $syscompat $syscompatdcl \
 675         $syscompat4 $syscompat4dcl \
 676         $syscompat6 $syscompat6dcl \
 677         $syscompat7 $syscompat7dcl \
 678         $syscompat10 $syscompat10dcl \
 679         $sysaue $sysprotoend > $sysproto
 680 cat $systracetmp >> $systrace
 681 cat $systraceret >> $systrace
 682