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" ]; then
  61         . $2
  62 fi
  63
  64 sed -e '
  65 :join
  66         /\\$/{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 = \"$systracetmp\"
  99                 systraceret = \"$systraceret\"
 100                 compat = \"$compat\"
 101                 compat4 = \"$compat4\"
 102                 compat6 = \"$compat6\"
 103                 compat7 = \"$compat7\"
 104                 syscallprefix = \"$syscallprefix\"
 105                 switchname = \"$switchname\"
 106                 namesname = \"$namesname\"
 107                 infile = \"$1\"
 108                 capenabled_string = \"$capenabled\"
 109                 "'
 110
 111                 split(capenabled_string, capenabled, ",");
 112
 113                 printf "/*\n * System call switch table.\n *\n" > syssw
 114                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
 115                 printf " * $%s$\n", "FreeBSD" > syssw
 116                 printf " */\n\n" > 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                 printf " */\n\n" > sysarg
 122
 123                 printf "\n#ifdef %s\n\n", compat > syscompat
 124                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 125                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 126                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 127
 128                 printf "/*\n * System call names.\n *\n" > sysnames
 129                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 130                 printf " * $%s$\n", "FreeBSD" > sysnames
 131                 printf " */\n\n" > sysnames
 132
 133                 printf "/*\n * System call numbers.\n *\n" > syshdr
 134                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 135                 printf " * $%s$\n", "FreeBSD" > syshdr
 136                 printf " */\n\n" > syshdr
 137
 138                 printf "# FreeBSD system call object files.\n" > sysmk
 139                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 140                 printf "# $%s$\n", "FreeBSD" > sysmk
 141
 142                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 143                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
 144                 printf " * $%s$\n", "FreeBSD" > systrace
 145         }
 146         NR == 1 {
 147                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 148                 printf "struct sysent %s[] = {\n",switchname > sysent
 149
 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/_ffcounter.h>\n" > sysarg
 156                 printf "#include <sys/_semaphore.h>\n" > sysarg
 157                 printf "#include <sys/ucontext.h>\n" > sysarg
 158                 printf "#include <sys/wait.h>\n\n" > sysarg
 159                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 160                 printf "struct proc;\n\n" > sysarg
 161                 printf "struct thread;\n\n" > sysarg
 162                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 163                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 164                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 165                 printf "#define\tPADL_(t)\t0\n" > sysarg
 166                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 167                 printf "#else\n" > sysarg
 168                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 169                 printf "#define\tPADR_(t)\t0\n" > sysarg
 170                 printf "#endif\n\n" > sysarg
 171
 172                 printf "const char *%s[] = {\n", namesname > sysnames
 173
 174                 printf "MIASM = " > sysmk
 175
 176                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 177                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
 178                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 179                 printf "\tswitch (sysnum) {\n" > systrace
 180
 181                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 182                 printf "\tswitch (sysnum) {\n" > systracetmp
 183
 184                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
 185                 printf "\tswitch (sysnum) {\n" > systraceret
 186
 187                 next
 188         }
 189         NF == 0 || $1 ~ /^;/ {
 190                 next
 191         }
 192         $1 ~ /^#[       ]*include/ {
 193                 print > sysinc
 194                 next
 195         }
 196         $1 ~ /^#[       ]*if/ {
 197                 print > sysent
 198                 print > sysdcl
 199                 print > sysarg
 200                 print > syscompat
 201                 print > syscompat4
 202                 print > syscompat6
 203                 print > syscompat7
 204                 print > sysnames
 205                 print > systrace
 206                 print > systracetmp
 207                 print > systraceret
 208                 savesyscall = syscall
 209                 next
 210         }
 211         $1 ~ /^#[       ]*else/ {
 212                 print > sysent
 213                 print > sysdcl
 214                 print > sysarg
 215                 print > syscompat
 216                 print > syscompat4
 217                 print > syscompat6
 218                 print > syscompat7
 219                 print > sysnames
 220                 print > systrace
 221                 print > systracetmp
 222                 print > systraceret
 223                 syscall = savesyscall
 224                 next
 225         }
 226         $1 ~ /^#/ {
 227                 print > sysent
 228                 print > sysdcl
 229                 print > sysarg
 230                 print > syscompat
 231                 print > syscompat4
 232                 print > syscompat6
 233                 print > syscompat7
 234                 print > sysnames
 235                 print > systrace
 236                 print > systracetmp
 237                 print > systraceret
 238                 next
 239         }
 240         syscall != $1 {
 241                 printf "%s: line %d: syscall number out of sync at %d\n",
 242                     infile, NR, syscall
 243                 printf "line is:\n"
 244                 print
 245                 exit 1
 246         }
 247         # Returns true if the type "name" is the first flag in the type field
 248         function type(name, flags, n) {
 249                 n = split($3, flags, /\|/)
 250                 return (n > 0 && flags[1] == name)
 251         }
 252         # Returns true if the flag "name" is set in the type field
 253         function flag(name, flags, i, n) {
 254                 n = split($3, flags, /\|/)
 255                 for (i = 1; i <= n; i++)
 256                         if (flags[i] == name)
 257                                 return 1
 258                 return 0
 259         }
 260         function align_sysent_comment(column) {
 261                 printf("\t") > sysent
 262                 column = column + 8 - column % 8
 263                 while (column < 56) {
 264                         printf("\t") > sysent
 265                         column = column + 8
 266                 }
 267         }
 268         function parserr(was, wanted) {
 269                 printf "%s: line %d: unexpected %s (expected %s)\n",
 270                     infile, NR, was, wanted
 271                 exit 1
 272         }
 273         function parseline() {
 274                 f=4                     # toss number, type, audit event
 275                 argc= 0;
 276                 argssize = "0"
 277                 thr_flag = "SY_THR_STATIC"
 278                 if (flag("NOTSTATIC")) {
 279                         thr_flag = "SY_THR_ABSENT"
 280                 }
 281                 if ($NF != "}") {
 282                         funcalias=$(NF-2)
 283                         argalias=$(NF-1)
 284                         rettype=$NF
 285                         end=NF-3
 286                 } else {
 287                         funcalias=""
 288                         argalias=""
 289                         rettype="int"
 290                         end=NF
 291                 }
 292                 if (flag("NODEF")) {
 293                         auditev="AUE_NULL"
 294                         funcname=$4
 295                         argssize = "AS(" $6 ")"
 296                         return
 297                 }
 298                 if ($f != "{")
 299                         parserr($f, "{")
 300                 f++
 301                 if ($end != "}")
 302                         parserr($end, "}")
 303                 end--
 304                 if ($end != ";")
 305                         parserr($end, ";")
 306                 end--
 307                 if ($end != ")")
 308                         parserr($end, ")")
 309                 end--
 310
 311                 syscallret=$f
 312                 f++
 313
 314                 funcname=$f
 315
 316                 #
 317                 # We now know the func name, so define a flags field for it.
 318                 # Do this before any other processing as we may return early
 319                 # from it.
 320                 #
 321                 for (cap in capenabled) {
 322                         if (funcname == capenabled[cap]) {
 323                                 flags = "SYF_CAPENABLED";
 324                         }
 325                 }
 326
 327                 if (funcalias == "")
 328                         funcalias = funcname
 329                 if (argalias == "") {
 330                         argalias = funcname "_args"
 331                         if (flag("COMPAT"))
 332                                 argalias = "o" argalias
 333                         if (flag("COMPAT4"))
 334                                 argalias = "freebsd4_" argalias
 335                         if (flag("COMPAT6"))
 336                                 argalias = "freebsd6_" argalias
 337                         if (flag("COMPAT7"))
 338                                 argalias = "freebsd7_" argalias
 339                 }
 340                 f++
 341
 342                 if ($f != "(")
 343                         parserr($f, ")")
 344                 f++
 345
 346                 if (f == end) {
 347                         if ($f != "void")
 348                                 parserr($f, "argument definition")
 349                         return
 350                 }
 351
 352                 while (f <= end) {
 353                         argc++
 354                         argtype[argc]=""
 355                         oldf=""
 356                         while (f < end && $(f+1) != ",") {
 357                                 if (argtype[argc] != "" && oldf != "*")
 358                                         argtype[argc] = argtype[argc]" ";
 359                                 argtype[argc] = argtype[argc]$f;
 360                                 oldf = $f;
 361                                 f++
 362                         }
 363                         if (argtype[argc] == "")
 364                                 parserr($f, "argument definition")
 365                         argname[argc]=$f;
 366                         f += 2;                 # skip name, and any comma
 367                 }
 368                 if (argc != 0)
 369                         argssize = "AS(" argalias ")"
 370         }
 371         {       comment = $4
 372                 if (NF < 7)
 373                         for (i = 5; i <= NF; i++)
 374                                 comment = comment " " $i
 375         }
 376
 377         #
 378         # The AUE_ audit event identifier.
 379         #
 380         {
 381                 auditev = $2;
 382         }
 383
 384         #
 385         # The flags, if any.
 386         #
 387         {
 388                 flags = "0";
 389         }
 390
 391         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 392             || type("NOSTD") {
 393                 parseline()
 394                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 395                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 396                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
 397                 if (argc > 0) {
 398                         printf("\t\tswitch(ndx) {\n") > systracetmp
 399                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 400                         for (i = 1; i <= argc; i++) {
 401                                 arg = argtype[i]
 402                                 sub("__restrict$", "", arg)
 403                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 404                                 if (index(arg, "*") > 0 || arg == "caddr_t")
 405                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 406                                              i - 1, \
 407                                              argname[i], arg) > systrace
 408                                 else if (arg == "union l_semun")
 409                                         printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
 410                                              i - 1, \
 411                                              argname[i], arg) > systrace
 412                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 413                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 414                                              i - 1, \
 415                                              argname[i], arg) > systrace
 416                                 else
 417                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 418                                              i - 1, \
 419                                              argname[i], arg) > systrace
 420                         }
 421                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 422
 423                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
 424                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
 425                         printf("\t\tbreak;\n") > systraceret
 426                 }
 427                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 428                 printf("\t\tbreak;\n") > systracetmp
 429                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 430                     !flag("NODEF")) {
 431                         printf("struct %s {\n", argalias) > sysarg
 432                         for (i = 1; i <= argc; i++)
 433                                 printf("\tchar %s_l_[PADL_(%s)]; " \
 434                                     "%s %s; char %s_r_[PADR_(%s)];\n",
 435                                     argname[i], argtype[i],
 436                                     argtype[i], argname[i],
 437                                     argname[i], argtype[i]) > sysarg
 438                         printf("};\n") > sysarg
 439                 }
 440                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 441                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 442                             argalias) > sysarg
 443                 if (!flag("NOPROTO") && !flag("NODEF")) {
 444                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 445                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 446                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 447                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 448                                 printf("%s\t%s(struct thread *, struct %s *)",
 449                                     rettype, funcname, argalias) > sysdcl
 450                         } else {
 451                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 452                                     rettype, funcname, argalias) > sysdcl
 453                         }
 454                         printf(";\n") > sysdcl
 455                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 456                             funcalias, auditev) > sysaue
 457                 }
 458                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 459                 column = 8 + 2 + length(argssize) + 15
 460                 if (flag("NOSTD")) {
 461                         printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
 462                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 463                 } else {
 464                         if (funcname == "nosys" || funcname == "sysarch" ||
 465                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 466                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
 467                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
 468                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 469                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 470                         } else {
 471                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 472                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 473                         }
 474                 }
 475                 align_sysent_comment(column)
 476                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 477                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 478                     funcalias, syscall, funcalias) > sysnames
 479                 if (!flag("NODEF")) {
 480                         printf("#define\t%s%s\t%d\n", syscallprefix,
 481                             funcalias, syscall) > syshdr
 482                         printf(" \\\n\t%s.o", funcalias) > sysmk
 483                 }
 484                 syscall++
 485                 next
 486         }
 487         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 488             type("COMPAT7") {
 489                 if (flag("COMPAT")) {
 490                         ncompat++
 491                         out = syscompat
 492                         outdcl = syscompatdcl
 493                         wrap = "compat"
 494                         prefix = "o"
 495                         descr = "old"
 496                 } else if (flag("COMPAT4")) {
 497                         ncompat4++
 498                         out = syscompat4
 499                         outdcl = syscompat4dcl
 500                         wrap = "compat4"
 501                         prefix = "freebsd4_"
 502                         descr = "freebsd4"
 503                 } else if (flag("COMPAT6")) {
 504                         ncompat6++
 505                         out = syscompat6
 506                         outdcl = syscompat6dcl
 507                         wrap = "compat6"
 508                         prefix = "freebsd6_"
 509                         descr = "freebsd6"
 510                 } else if (flag("COMPAT7")) {
 511                         ncompat7++
 512                         out = syscompat7
 513                         outdcl = syscompat7dcl
 514                         wrap = "compat7"
 515                         prefix = "freebsd7_"
 516                         descr = "freebsd7"
 517                 }
 518                 parseline()
 519                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 520                     !flag("NODEF")) {
 521                         printf("struct %s {\n", argalias) > out
 522                         for (i = 1; i <= argc; i++)
 523                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 524                                     "char %s_r_[PADR_(%s)];\n",
 525                                     argname[i], argtype[i],
 526                                     argtype[i], argname[i],
 527                                     argname[i], argtype[i]) > out
 528                         printf("};\n") > out
 529                 }
 530                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 531                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 532                             argalias) > sysarg
 533                 if (!flag("NOPROTO") && !flag("NODEF")) {
 534                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 535                             rettype, prefix, funcname, argalias) > outdcl
 536                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 537                             prefix, funcname, auditev) > sysaue
 538                 }
 539                 if (flag("NOSTD")) {
 540                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 541                             "0", "lkmressys", "AUE_NULL") > sysent
 542                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 543                             length("lkmressys") + length("AUE_NULL") + 3)
 544                 } else {
 545                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 546                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 547                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 548                             length(funcname) + length(auditev) + \
 549                             length(flags) + 4)
 550                 }
 551                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 552                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 553                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 554                 if (flag("COMPAT")) {
 555                         printf("\t\t\t\t/* %d is old %s */\n",
 556                             syscall, funcalias) > syshdr
 557                 } else if (!flag("NODEF")) {
 558                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 559                             prefix, funcalias, syscall) > syshdr
 560                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 561                 }
 562                 syscall++
 563                 next
 564         }
 565         type("OBSOL") {
 566                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 567                 align_sysent_comment(34)
 568                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 569                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 570                     $4, syscall, comment) > sysnames
 571                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 572                     syscall, comment) > syshdr
 573                 syscall++
 574                 next
 575         }
 576         type("UNIMPL") {
 577                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 578                     syscall, comment) > sysent
 579                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 580                     syscall, syscall, comment) > sysnames
 581                 syscall++
 582                 next
 583         }
 584         {
 585                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 586                 exit 1
 587         }
 588         END {
 589                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 590
 591                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
 592                         printf "#include \"opt_compat.h\"\n\n" > syssw
 593
 594                 if (ncompat != 0) {
 595                         printf "\n#ifdef %s\n", compat > sysinc
 596                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 597                         printf "#else\n" > sysinc
 598                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 599                         printf "#endif\n" > sysinc
 600                 }
 601
 602                 if (ncompat4 != 0) {
 603                         printf "\n#ifdef %s\n", compat4 > sysinc
 604                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 605                         printf "#else\n" > sysinc
 606                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 607                         printf "#endif\n" > sysinc
 608                 }
 609
 610                 if (ncompat6 != 0) {
 611                         printf "\n#ifdef %s\n", compat6 > sysinc
 612                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 613                         printf "#else\n" > sysinc
 614                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 615                         printf "#endif\n" > sysinc
 616                 }
 617
 618                 if (ncompat7 != 0) {
 619                         printf "\n#ifdef %s\n", compat7 > sysinc
 620                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 621                         printf "#else\n" > sysinc
 622                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 623                         printf "#endif\n" > sysinc
 624                 }
 625
 626                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 627                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 628                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 629                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 630
 631                 printf("\n#undef PAD_\n") > sysprotoend
 632                 printf("#undef PADL_\n") > sysprotoend
 633                 printf("#undef PADR_\n") > sysprotoend
 634                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 635
 636                 printf("\n") > sysmk
 637                 printf("};\n") > sysent
 638                 printf("};\n") > sysnames
 639                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 640                     > syshdr
 641                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 642                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 643                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
 644         } '
 645
 646 cat $sysinc $sysent >> $syssw
 647 cat $sysarg $sysdcl \
 648         $syscompat $syscompatdcl \
 649         $syscompat4 $syscompat4dcl \
 650         $syscompat6 $syscompat6dcl \
 651         $syscompat7 $syscompat7dcl \
 652         $sysaue $sysprotoend > $sysproto
 653 cat $systracetmp >> $systrace
 654 cat $systraceret >> $systrace
 655