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.$$"
  41 systraceret="systraceret.$$"
  42
  43 if [ -r capabilities.conf ]; then
  44         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
  45         capenabled=`echo $capenabled | sed 's/ /,/g'`
  46 else
  47         capenabled=""
  48 fi
  49
  50 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
  51
  52 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
  53
  54 case $# in
  55     0)  echo "usage: $0 input-file <config-file>" 1>&2
  56         exit 1
  57         ;;
  58 esac
  59
  60 if [ -n "$2" -a -f "$2" ]; then
  61         . $2
  62 fi
  63
  64 sed -e '
  65 s/\$//g
  66 :join
  67         /\\$/{a\
  68
  69         N
  70         s/\\\n//
  71         b join
  72         }
  73 2,${
  74         /^#/!s/\([{}()*,]\)/ \1 /g
  75 }
  76 ' < $1 | awk "
  77         BEGIN {
  78                 sysaue = \"$sysaue\"
  79                 sysdcl = \"$sysdcl\"
  80                 sysproto = \"$sysproto\"
  81                 sysprotoend = \"$sysprotoend\"
  82                 sysproto_h = \"$sysproto_h\"
  83                 syscompat = \"$syscompat\"
  84                 syscompatdcl = \"$syscompatdcl\"
  85                 syscompat4 = \"$syscompat4\"
  86                 syscompat4dcl = \"$syscompat4dcl\"
  87                 syscompat6 = \"$syscompat6\"
  88                 syscompat6dcl = \"$syscompat6dcl\"
  89                 syscompat7 = \"$syscompat7\"
  90                 syscompat7dcl = \"$syscompat7dcl\"
  91                 sysent = \"$sysent\"
  92                 syssw = \"$syssw\"
  93                 sysinc = \"$sysinc\"
  94                 sysarg = \"$sysarg\"
  95                 sysnames = \"$sysnames\"
  96                 syshdr = \"$syshdr\"
  97                 sysmk = \"$sysmk\"
  98                 systrace = \"$systrace\"
  99                 systracetmp = \"$systracetmp\"
 100                 systraceret = \"$systraceret\"
 101                 compat = \"$compat\"
 102                 compat4 = \"$compat4\"
 103                 compat6 = \"$compat6\"
 104                 compat7 = \"$compat7\"
 105                 syscallprefix = \"$syscallprefix\"
 106                 switchname = \"$switchname\"
 107                 namesname = \"$namesname\"
 108                 infile = \"$1\"
 109                 capenabled_string = \"$capenabled\"
 110                 "'
 111
 112                 split(capenabled_string, capenabled, ",");
 113
 114                 printf "/*\n * System call switch table.\n *\n" > syssw
 115                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
 116                 printf " * $%s$\n", "FreeBSD" > syssw
 117
 118                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 119                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
 120                 printf " * $%s$\n", "FreeBSD" > sysarg
 121
 122                 printf "\n#ifdef %s\n\n", compat > syscompat
 123                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 124                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 125                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 126
 127                 printf "/*\n * System call names.\n *\n" > sysnames
 128                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 129                 printf " * $%s$\n", "FreeBSD" > sysnames
 130
 131                 printf "/*\n * System call numbers.\n *\n" > syshdr
 132                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 133                 printf " * $%s$\n", "FreeBSD" > syshdr
 134                 printf "# FreeBSD system call names.\n" > sysmk
 135                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 136                 printf "# $%s$\n", "FreeBSD" > sysmk
 137
 138                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 139                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
 140                 printf " * $%s$\n", "FreeBSD" > systrace
 141         }
 142         NR == 1 {
 143                 gsub("[$]FreeBSD: ", "", $0)
 144                 gsub(" [$]", "", $0)
 145
 146                 printf " * created from%s\n */\n\n", $0 > syssw
 147
 148                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 149                 printf "struct sysent %s[] = {\n",switchname > sysent
 150
 151                 printf " * created from%s\n */\n\n", $0 > sysarg
 152                 printf "#ifndef %s\n", sysproto_h > sysarg
 153                 printf "#define\t%s\n\n", sysproto_h > sysarg
 154                 printf "#include <sys/signal.h>\n" > sysarg
 155                 printf "#include <sys/acl.h>\n" > sysarg
 156                 printf "#include <sys/cpuset.h>\n" > sysarg
 157                 printf "#include <sys/_ffcounter.h>\n" > sysarg
 158                 printf "#include <sys/_semaphore.h>\n" > sysarg
 159                 printf "#include <sys/ucontext.h>\n" > sysarg
 160                 printf "#include <sys/wait.h>\n\n" > sysarg
 161                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 162                 printf "struct proc;\n\n" > sysarg
 163                 printf "struct thread;\n\n" > sysarg
 164                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 165                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 166                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 167                 printf "#define\tPADL_(t)\t0\n" > sysarg
 168                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 169                 printf "#else\n" > sysarg
 170                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 171                 printf "#define\tPADR_(t)\t0\n" > sysarg
 172                 printf "#endif\n\n" > sysarg
 173
 174                 printf " * created from%s\n */\n\n", $0 > sysnames
 175                 printf "const char *%s[] = {\n", namesname > sysnames
 176
 177                 printf " * created from%s\n */\n\n", $0 > syshdr
 178
 179                 printf "# created from%s\nMIASM = ", $0 > sysmk
 180
 181                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 182                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
 183                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 184                 printf "\tswitch (sysnum) {\n" > systrace
 185
 186                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 187                 printf "\tswitch (sysnum) {\n" > systracetmp
 188
 189                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
 190                 printf "\tswitch (sysnum) {\n" > systraceret
 191
 192                 next
 193         }
 194         NF == 0 || $1 ~ /^;/ {
 195                 next
 196         }
 197         $1 ~ /^#[       ]*include/ {
 198                 print > sysinc
 199                 next
 200         }
 201         $1 ~ /^#[       ]*if/ {
 202                 print > sysent
 203                 print > sysdcl
 204                 print > sysarg
 205                 print > syscompat
 206                 print > syscompat4
 207                 print > syscompat6
 208                 print > syscompat7
 209                 print > sysnames
 210                 print > systrace
 211                 print > systracetmp
 212                 print > systraceret
 213                 savesyscall = syscall
 214                 next
 215         }
 216         $1 ~ /^#[       ]*else/ {
 217                 print > sysent
 218                 print > sysdcl
 219                 print > sysarg
 220                 print > syscompat
 221                 print > syscompat4
 222                 print > syscompat6
 223                 print > syscompat7
 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 > sysnames
 240                 print > systrace
 241                 print > systracetmp
 242                 print > systraceret
 243                 next
 244         }
 245         syscall != $1 {
 246                 printf "%s: line %d: syscall number out of sync at %d\n",
 247                     infile, NR, syscall
 248                 printf "line is:\n"
 249                 print
 250                 exit 1
 251         }
 252         # Returns true if the type "name" is the first flag in the type field
 253         function type(name, flags, n) {
 254                 n = split($3, flags, /\|/)
 255                 return (n > 0 && flags[1] == name)
 256         }
 257         # Returns true if the flag "name" is set in the type field
 258         function flag(name, flags, i, n) {
 259                 n = split($3, flags, /\|/)
 260                 for (i = 1; i <= n; i++)
 261                         if (flags[i] == name)
 262                                 return 1
 263                 return 0
 264         }
 265         function align_sysent_comment(column) {
 266                 printf("\t") > sysent
 267                 column = column + 8 - column % 8
 268                 while (column < 56) {
 269                         printf("\t") > sysent
 270                         column = column + 8
 271                 }
 272         }
 273         function parserr(was, wanted) {
 274                 printf "%s: line %d: unexpected %s (expected %s)\n",
 275                     infile, NR, was, wanted
 276                 exit 1
 277         }
 278         function parseline() {
 279                 f=4                     # toss number, type, audit event
 280                 argc= 0;
 281                 argssize = "0"
 282                 thr_flag = "SY_THR_STATIC"
 283                 if (flag("NOTSTATIC")) {
 284                         thr_flag = "SY_THR_ABSENT"
 285                 }
 286                 if ($NF != "}") {
 287                         funcalias=$(NF-2)
 288                         argalias=$(NF-1)
 289                         rettype=$NF
 290                         end=NF-3
 291                 } else {
 292                         funcalias=""
 293                         argalias=""
 294                         rettype="int"
 295                         end=NF
 296                 }
 297                 if (flag("NODEF")) {
 298                         auditev="AUE_NULL"
 299                         funcname=$4
 300                         argssize = "AS(" $6 ")"
 301                         return
 302                 }
 303                 if ($f != "{")
 304                         parserr($f, "{")
 305                 f++
 306                 if ($end != "}")
 307                         parserr($end, "}")
 308                 end--
 309                 if ($end != ";")
 310                         parserr($end, ";")
 311                 end--
 312                 if ($end != ")")
 313                         parserr($end, ")")
 314                 end--
 315
 316                 syscallret=$f
 317                 f++
 318
 319                 funcname=$f
 320
 321                 #
 322                 # We now know the func name, so define a flags field for it.
 323                 # Do this before any other processing as we may return early
 324                 # from it.
 325                 #
 326                 for (cap in capenabled) {
 327                         if (funcname == capenabled[cap]) {
 328                                 flags = "SYF_CAPENABLED";
 329                         }
 330                 }
 331
 332                 if (funcalias == "")
 333                         funcalias = funcname
 334                 if (argalias == "") {
 335                         argalias = funcname "_args"
 336                         if (flag("COMPAT"))
 337                                 argalias = "o" argalias
 338                         if (flag("COMPAT4"))
 339                                 argalias = "freebsd4_" argalias
 340                         if (flag("COMPAT6"))
 341                                 argalias = "freebsd6_" argalias
 342                         if (flag("COMPAT7"))
 343                                 argalias = "freebsd7_" argalias
 344                 }
 345                 f++
 346
 347                 if ($f != "(")
 348                         parserr($f, ")")
 349                 f++
 350
 351                 if (f == end) {
 352                         if ($f != "void")
 353                                 parserr($f, "argument definition")
 354                         return
 355                 }
 356
 357                 while (f <= end) {
 358                         argc++
 359                         argtype[argc]=""
 360                         oldf=""
 361                         while (f < end && $(f+1) != ",") {
 362                                 if (argtype[argc] != "" && oldf != "*")
 363                                         argtype[argc] = argtype[argc]" ";
 364                                 argtype[argc] = argtype[argc]$f;
 365                                 oldf = $f;
 366                                 f++
 367                         }
 368                         if (argtype[argc] == "")
 369                                 parserr($f, "argument definition")
 370                         argname[argc]=$f;
 371                         f += 2;                 # skip name, and any comma
 372                 }
 373                 if (argc != 0)
 374                         argssize = "AS(" argalias ")"
 375         }
 376         {       comment = $4
 377                 if (NF < 7)
 378                         for (i = 5; i <= NF; i++)
 379                                 comment = comment " " $i
 380         }
 381
 382         #
 383         # The AUE_ audit event identifier.
 384         #
 385         {
 386                 auditev = $2;
 387         }
 388
 389         #
 390         # The flags, if any.
 391         #
 392         {
 393                 flags = "0";
 394         }
 395
 396         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 397             || type("NOSTD") {
 398                 parseline()
 399                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 400                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 401                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
 402                 if (argc > 0) {
 403                         printf("\t\tswitch(ndx) {\n") > systracetmp
 404                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 405                         for (i = 1; i <= argc; i++) {
 406                                 arg = argtype[i]
 407                                 sub("__restrict$", "", arg)
 408                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 409                                 if (index(arg, "*") > 0 || arg == "caddr_t")
 410                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 411                                              i - 1, \
 412                                              argname[i], arg) > systrace
 413                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 414                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 415                                              i - 1, \
 416                                              argname[i], arg) > systrace
 417                                 else
 418                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 419                                              i - 1, \
 420                                              argname[i], arg) > systrace
 421                         }
 422                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 423
 424                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
 425                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
 426                         printf("\t\tbreak;\n") > systraceret
 427                 }
 428                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 429                 printf("\t\tbreak;\n") > systracetmp
 430                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 431                     !flag("NODEF")) {
 432                         printf("struct %s {\n", argalias) > sysarg
 433                         for (i = 1; i <= argc; i++)
 434                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 435                                     "%s %s; char %s_r_[PADR_(%s)];\n",
 436                                     argname[i], argtype[i],
 437                                     argtype[i], argname[i],
 438                                     argname[i], argtype[i]) > sysarg
 439                         printf("};\n") > sysarg
 440                 }
 441                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 442                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 443                             argalias) > sysarg
 444                 if (!flag("NOPROTO") && !flag("NODEF")) {
 445                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 446                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 447                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 448                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 449                                 printf("%s\t%s(struct thread *, struct %s *)",
 450                                     rettype, funcname, argalias) > sysdcl
 451                         } else {
 452                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 453                                     rettype, funcname, argalias) > sysdcl
 454                         }
 455                         printf(";\n") > sysdcl
 456                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 457                             funcalias, auditev) > sysaue
 458                 }
 459                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 460                 column = 8 + 2 + length(argssize) + 15
 461                 if (flag("NOSTD")) {
 462                         printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
 463                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 464                 } else {
 465                         if (funcname == "nosys" || funcname == "sysarch" ||
 466                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 467                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 468                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 469                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 470                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 471                         } else {
 472                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 473                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 474                         }
 475                 }
 476                 align_sysent_comment(column)
 477                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 478                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 479                     funcalias, syscall, funcalias) > sysnames
 480                 if (!flag("NODEF")) {
 481                         printf("#define\t%s%s\t%d\n", syscallprefix,
 482                             funcalias, syscall) > syshdr
 483                         printf(" \\\n\t%s.o", funcalias) > sysmk
 484                 }
 485                 syscall++
 486                 next
 487         }
 488         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 489             type("COMPAT7") {
 490                 if (flag("COMPAT")) {
 491                         ncompat++
 492                         out = syscompat
 493                         outdcl = syscompatdcl
 494                         wrap = "compat"
 495                         prefix = "o"
 496                         descr = "old"
 497                 } else if (flag("COMPAT4")) {
 498                         ncompat4++
 499                         out = syscompat4
 500                         outdcl = syscompat4dcl
 501                         wrap = "compat4"
 502                         prefix = "freebsd4_"
 503                         descr = "freebsd4"
 504                 } else if (flag("COMPAT6")) {
 505                         ncompat6++
 506                         out = syscompat6
 507                         outdcl = syscompat6dcl
 508                         wrap = "compat6"
 509                         prefix = "freebsd6_"
 510                         descr = "freebsd6"
 511                 } else if (flag("COMPAT7")) {
 512                         ncompat7++
 513                         out = syscompat7
 514                         outdcl = syscompat7dcl
 515                         wrap = "compat7"
 516                         prefix = "freebsd7_"
 517                         descr = "freebsd7"
 518                 }
 519                 parseline()
 520                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 521                     !flag("NODEF")) {
 522                         printf("struct %s {\n", argalias) > out
 523                         for (i = 1; i <= argc; i++)
 524                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 525                                     "char %s_r_[PADR_(%s)];\n",
 526                                     argname[i], argtype[i],
 527                                     argtype[i], argname[i],
 528                                     argname[i], argtype[i]) > out
 529                         printf("};\n") > out
 530                 }
 531                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 532                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 533                             argalias) > sysarg
 534                 if (!flag("NOPROTO") && !flag("NODEF")) {
 535                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 536                             rettype, prefix, funcname, argalias) > outdcl
 537                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 538                             prefix, funcname, auditev) > sysaue
 539                 }
 540                 if (flag("NOSTD")) {
 541                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 542                             "0", "lkmressys", "AUE_NULL") > sysent
 543                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 544                             length("lkmressys") + length("AUE_NULL") + 3)
 545                 } else {
 546                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 547                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 548                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 549                             length(funcname) + length(auditev) + \
 550                             length(flags) + 4)
 551                 }
 552                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 553                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 554                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 555                 if (flag("COMPAT")) {
 556                         printf("\t\t\t\t/* %d is old %s */\n",
 557                             syscall, funcalias) > syshdr
 558                 } else if (!flag("NODEF")) {
 559                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 560                             prefix, funcalias, syscall) > syshdr
 561                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 562                 }
 563                 syscall++
 564                 next
 565         }
 566         type("OBSOL") {
 567                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 568                 align_sysent_comment(34)
 569                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 570                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 571                     $4, syscall, comment) > sysnames
 572                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 573                     syscall, comment) > syshdr
 574                 syscall++
 575                 next
 576         }
 577         type("UNIMPL") {
 578                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 579                     syscall, comment) > sysent
 580                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 581                     syscall, syscall, comment) > sysnames
 582                 syscall++
 583                 next
 584         }
 585         {
 586                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 587                 exit 1
 588         }
 589         END {
 590                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 591
 592                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
 593                         printf "#include \"opt_compat.h\"\n\n" > syssw
 594
 595                 if (ncompat != 0) {
 596                         printf "\n#ifdef %s\n", compat > sysinc
 597                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 598                         printf "#else\n" > sysinc
 599                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 600                         printf "#endif\n" > sysinc
 601                 }
 602
 603                 if (ncompat4 != 0) {
 604                         printf "\n#ifdef %s\n", compat4 > sysinc
 605                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 606                         printf "#else\n" > sysinc
 607                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 608                         printf "#endif\n" > sysinc
 609                 }
 610
 611                 if (ncompat6 != 0) {
 612                         printf "\n#ifdef %s\n", compat6 > sysinc
 613                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 614                         printf "#else\n" > sysinc
 615                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 616                         printf "#endif\n" > sysinc
 617                 }
 618
 619                 if (ncompat7 != 0) {
 620                         printf "\n#ifdef %s\n", compat7 > sysinc
 621                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 622                         printf "#else\n" > sysinc
 623                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 624                         printf "#endif\n" > sysinc
 625                 }
 626
 627                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 628                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 629                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 630                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 631
 632                 printf("\n#undef PAD_\n") > sysprotoend
 633                 printf("#undef PADL_\n") > sysprotoend
 634                 printf("#undef PADR_\n") > sysprotoend
 635                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 636
 637                 printf("\n") > sysmk
 638                 printf("};\n") > sysent
 639                 printf("};\n") > sysnames
 640                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 641                     > syshdr
 642                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 643                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 644                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
 645         } '
 646
 647 cat $sysinc $sysent >> $syssw
 648 cat $sysarg $sysdcl \
 649         $syscompat $syscompatdcl \
 650         $syscompat4 $syscompat4dcl \
 651         $syscompat6 $syscompat6dcl \
 652         $syscompat7 $syscompat7dcl \
 653         $sysaue $sysprotoend > $sysproto
 654 cat $systracetmp >> $systrace
 655 cat $systraceret >> $systrace
 656