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 compat11=COMPAT_FREEBSD11
  14 compat12=COMPAT_FREEBSD12
  15
  16 # output files:
  17 sysnames="syscalls.c"
  18 sysproto="../sys/sysproto.h"
  19 sysproto_h=_SYS_SYSPROTO_H_
  20 syshdr="../sys/syscall.h"
  21 sysmk="../sys/syscall.mk"
  22 syssw="init_sysent.c"
  23 syscallprefix="SYS_"
  24 switchname="sysent"
  25 namesname="syscallnames"
  26 systrace="systrace_args.c"
  27
  28 # tmp files:
  29 sysaue="sysent.aue.$$"
  30 sysdcl="sysent.dcl.$$"
  31 syscompat="sysent.compat.$$"
  32 syscompatdcl="sysent.compatdcl.$$"
  33 syscompat4="sysent.compat4.$$"
  34 syscompat4dcl="sysent.compat4dcl.$$"
  35 syscompat6="sysent.compat6.$$"
  36 syscompat6dcl="sysent.compat6dcl.$$"
  37 syscompat7="sysent.compat7.$$"
  38 syscompat7dcl="sysent.compat7dcl.$$"
  39 syscompat10="sysent.compat10.$$"
  40 syscompat10dcl="sysent.compat10dcl.$$"
  41 syscompat11="sysent.compat11.$$"
  42 syscompat11dcl="sysent.compat11dcl.$$"
  43 syscompat12="sysent.compat12.$$"
  44 syscompat12dcl="sysent.compat12dcl.$$"
  45 sysent="sysent.switch.$$"
  46 sysinc="sysinc.switch.$$"
  47 sysarg="sysarg.switch.$$"
  48 sysprotoend="sysprotoend.$$"
  49 systracetmp="systrace.$$"
  50 systraceret="systraceret.$$"
  51 capabilities_conf="capabilities.conf"
  52
  53 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $syscompat11 $syscompat11dcl $syscompat12 $syscompat12dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
  54
  55 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $syscompat11 $syscompat11dcl $syscompat12 $syscompat12dcl $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 if [ -r $capabilities_conf ]; then
  68         capenabled=`egrep -v '^#|^$' $capabilities_conf`
  69         capenabled=`echo $capenabled | sed 's/ /,/g'`
  70 else
  71         capenabled=""
  72 fi
  73
  74 sed -e '
  75         # FreeBSD ID, includes, comments, and blank lines
  76         /.*\$FreeBSD/b done_joining
  77         /^[#;]/b done_joining
  78         /^$/b done_joining
  79
  80         # Join lines ending in backslash
  81 :joining
  82         /\\$/{a\
  83
  84         N
  85         s/\\\n//
  86         b joining
  87         }
  88
  89         # OBSOL, etc lines without function signatures
  90         /^[0-9][^{]*$/b done_joining
  91
  92         # Join incomplete signatures.  The { must appear on the first line
  93         # and the } must appear on the last line (modulo lines joined by
  94         # backslashes).
  95         /^[^}]*$/{a\
  96
  97         N
  98         s/\n//
  99         b joining
 100         }
 101 :done_joining
 102 2,${
 103         /^#/!s/\([{}()*,]\)/ \1 /g
 104 }
 105 ' < $1 | awk "
 106         BEGIN {
 107                 sysaue = \"$sysaue\"
 108                 sysdcl = \"$sysdcl\"
 109                 sysproto = \"$sysproto\"
 110                 sysprotoend = \"$sysprotoend\"
 111                 sysproto_h = \"$sysproto_h\"
 112                 syscompat = \"$syscompat\"
 113                 syscompatdcl = \"$syscompatdcl\"
 114                 syscompat4 = \"$syscompat4\"
 115                 syscompat4dcl = \"$syscompat4dcl\"
 116                 syscompat6 = \"$syscompat6\"
 117                 syscompat6dcl = \"$syscompat6dcl\"
 118                 syscompat7 = \"$syscompat7\"
 119                 syscompat7dcl = \"$syscompat7dcl\"
 120                 syscompat10 = \"$syscompat10\"
 121                 syscompat10dcl = \"$syscompat10dcl\"
 122                 syscompat11 = \"$syscompat11\"
 123                 syscompat11dcl = \"$syscompat11dcl\"
 124                 syscompat12 = \"$syscompat12\"
 125                 syscompat12dcl = \"$syscompat12dcl\"
 126                 sysent = \"$sysent\"
 127                 syssw = \"$syssw\"
 128                 sysinc = \"$sysinc\"
 129                 sysarg = \"$sysarg\"
 130                 sysnames = \"$sysnames\"
 131                 syshdr = \"$syshdr\"
 132                 sysmk = \"$sysmk\"
 133                 systrace = \"$systrace\"
 134                 systracetmp = \"$systracetmp\"
 135                 systraceret = \"$systraceret\"
 136                 compat = \"$compat\"
 137                 compat4 = \"$compat4\"
 138                 compat6 = \"$compat6\"
 139                 compat7 = \"$compat7\"
 140                 compat10 = \"$compat10\"
 141                 compat11 = \"$compat11\"
 142                 compat12 = \"$compat12\"
 143                 syscallprefix = \"$syscallprefix\"
 144                 switchname = \"$switchname\"
 145                 namesname = \"$namesname\"
 146                 infile = \"$1\"
 147                 abi_func_prefix = \"$abi_func_prefix\"
 148                 capenabled_string = \"$capenabled\"
 149                 "'
 150
 151                 # Avoid a literal generated file tag here.
 152                 generated = "@" "generated";
 153
 154                 split(capenabled_string, capenabled, ",");
 155
 156                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 157                 printf "struct sysent %s[] = {\n",switchname > sysent
 158
 159                 printf "/*\n * System call switch table.\n *\n" > syssw
 160                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > syssw
 161                 printf " * $%s$\n", "FreeBSD" > syssw
 162                 printf " */\n\n" > syssw
 163
 164                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 165                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > sysarg
 166                 printf " * $%s$\n", "FreeBSD" > sysarg
 167                 printf " */\n\n" > sysarg
 168                 printf "#ifndef %s\n", sysproto_h > sysarg
 169                 printf "#define\t%s\n\n", sysproto_h > sysarg
 170                 printf "#include <sys/signal.h>\n" > sysarg
 171                 printf "#include <sys/acl.h>\n" > sysarg
 172                 printf "#include <sys/cpuset.h>\n" > sysarg
 173                 printf "#include <sys/domainset.h>\n" > sysarg
 174                 printf "#include <sys/_ffcounter.h>\n" > sysarg
 175                 printf "#include <sys/_semaphore.h>\n" > sysarg
 176                 printf "#include <sys/ucontext.h>\n" > sysarg
 177                 printf "#include <sys/wait.h>\n\n" > sysarg
 178                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 179                 printf "struct proc;\n\n" > sysarg
 180                 printf "struct thread;\n\n" > sysarg
 181                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 182                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 183                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 184                 printf "#define\tPADL_(t)\t0\n" > sysarg
 185                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 186                 printf "#else\n" > sysarg
 187                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 188                 printf "#define\tPADR_(t)\t0\n" > sysarg
 189                 printf "#endif\n\n" > sysarg
 190
 191                 printf "\n#ifdef %s\n\n", compat > syscompat
 192                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 193                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 194                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 195                 printf "\n#ifdef %s\n\n", compat10 > syscompat10
 196                 printf "\n#ifdef %s\n\n", compat11 > syscompat11
 197                 printf "\n#ifdef %s\n\n", compat12 > syscompat12
 198
 199                 printf "/*\n * System call names.\n *\n" > sysnames
 200                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > sysnames
 201                 printf " * $%s$\n", "FreeBSD" > sysnames
 202                 printf " */\n\n" > sysnames
 203                 printf "const char *%s[] = {\n", namesname > sysnames
 204
 205                 printf "/*\n * System call numbers.\n *\n" > syshdr
 206                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > syshdr
 207                 printf " * $%s$\n", "FreeBSD" > syshdr
 208                 printf " */\n\n" > syshdr
 209
 210                 printf "# FreeBSD system call object files.\n" > sysmk
 211                 printf "# DO NOT EDIT-- this file is automatically " generated ".\n" > sysmk
 212                 printf "# $%s$\n", "FreeBSD" > sysmk
 213                 printf "MIASM = " > sysmk
 214
 215                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 216                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > systrace
 217                 printf " * $%s$\n", "FreeBSD" > systrace
 218                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 219                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
 220                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 221                 printf "\tswitch (sysnum) {\n" > systrace
 222
 223                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 224                 printf "\tswitch (sysnum) {\n" > systracetmp
 225
 226                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
 227                 printf "\tswitch (sysnum) {\n" > systraceret
 228         }
 229         NR == 1 {
 230                 next
 231         }
 232         NF == 0 || $1 ~ /^;/ {
 233                 next
 234         }
 235         $1 ~ /^#[       ]*include/ {
 236                 print > sysinc
 237                 next
 238         }
 239         $1 ~ /^#[       ]*if/ {
 240                 print > sysent
 241                 print > sysdcl
 242                 print > sysarg
 243                 print > syscompat
 244                 print > syscompat4
 245                 print > syscompat6
 246                 print > syscompat7
 247                 print > syscompat10
 248                 print > syscompat11
 249                 print > syscompat12
 250                 print > sysnames
 251                 print > systrace
 252                 print > systracetmp
 253                 print > systraceret
 254                 savesyscall = syscall
 255                 next
 256         }
 257         $1 ~ /^#[       ]*else/ {
 258                 print > sysent
 259                 print > sysdcl
 260                 print > sysarg
 261                 print > syscompat
 262                 print > syscompat4
 263                 print > syscompat6
 264                 print > syscompat7
 265                 print > syscompat10
 266                 print > syscompat11
 267                 print > syscompat12
 268                 print > sysnames
 269                 print > systrace
 270                 print > systracetmp
 271                 print > systraceret
 272                 syscall = savesyscall
 273                 next
 274         }
 275         $1 ~ /^#/ {
 276                 print > sysent
 277                 print > sysdcl
 278                 print > sysarg
 279                 print > syscompat
 280                 print > syscompat4
 281                 print > syscompat6
 282                 print > syscompat7
 283                 print > syscompat10
 284                 print > syscompat11
 285                 print > syscompat12
 286                 print > sysnames
 287                 print > systrace
 288                 print > systracetmp
 289                 print > systraceret
 290                 next
 291         }
 292         # Returns true if the type "name" is the first flag in the type field
 293         function type(name, flags, n) {
 294                 n = split($3, flags, /\|/)
 295                 return (n > 0 && flags[1] == name)
 296         }
 297         # Returns true if the flag "name" is set in the type field
 298         function flag(name, flags, i, n) {
 299                 n = split($3, flags, /\|/)
 300                 for (i = 1; i <= n; i++)
 301                         if (flags[i] == name)
 302                                 return 1
 303                 return 0
 304         }
 305         {
 306                 n = split($1, syscall_range, /-/)
 307                 if (n == 1) {
 308                         syscall_range[2] = syscall_range[1]
 309                 } else if (n == 2) {
 310                         if (!type("UNIMPL")) {
 311                                 printf "%s: line %d: range permitted only with UNIMPL\n",
 312                                     infile, NR
 313                                 exit 1
 314                         }
 315                 } else {
 316                         printf "%s: line %d: invalid syscall number or range %s\n",
 317                             infile, NR, $1
 318                         exit 1
 319                 }
 320         }
 321         syscall != syscall_range[1] {
 322                 printf "%s: line %d: syscall number out of sync at %d\n",
 323                     infile, NR, syscall
 324                 printf "line is:\n"
 325                 print
 326                 exit 1
 327         }
 328         function align_sysent_comment(column) {
 329                 printf("\t") > sysent
 330                 column = column + 8 - column % 8
 331                 while (column < 56) {
 332                         printf("\t") > sysent
 333                         column = column + 8
 334                 }
 335         }
 336         function parserr(was, wanted) {
 337                 printf "%s: line %d: unexpected %s (expected %s)\n",
 338                     infile, NR, was, wanted
 339                 exit 1
 340         }
 341         function parseline() {
 342                 f=4                     # toss number, type, audit event
 343                 ret_inc = 0
 344                 argc= 0;
 345                 argssize = "0"
 346                 thr_flag = "SY_THR_STATIC"
 347                 if (flag("NOTSTATIC")) {
 348                         thr_flag = "SY_THR_ABSENT"
 349                 }
 350                 if ($NF != "}") {
 351                         funcalias=$(NF-2)
 352                         argalias=$(NF-1)
 353                         rettype=$NF
 354                         end=NF-3
 355                 } else {
 356                         funcalias=""
 357                         argalias=""
 358                         rettype="int"
 359                         if ($(f+2) == "*") {
 360                                 ret_inc = 1
 361                         }
 362                         end=NF
 363                 }
 364                 if (flag("NODEF")) {
 365                         auditev="AUE_NULL"
 366                         funcname=$(4 + ret_inc)
 367                         argssize = "AS(" $(6 + ret_inc) ")"
 368                         return
 369                 }
 370                 if ($f != "{")
 371                         parserr($f, "{")
 372                 f++
 373                 if ($end != "}")
 374                         parserr($end, "}")
 375                 end--
 376                 if ($end != ";")
 377                         parserr($end, ";")
 378                 end--
 379                 if ($end != ")")
 380                         parserr($end, ")")
 381                 end--
 382
 383                 syscallret=$f
 384                 f++
 385                 while (ret_inc > 0) {
 386                         syscallret=syscallret " " $f
 387                         f++
 388                         ret_inc--
 389                 }
 390
 391                 funcname=$f
 392
 393                 #
 394                 # We now know the func name, so define a flags field for it.
 395                 # Do this before any other processing as we may return early
 396                 # from it.
 397                 #
 398                 for (cap in capenabled) {
 399                         if (funcname == capenabled[cap] ||
 400                             funcname == abi_func_prefix capenabled[cap]) {
 401                                 flags = "SYF_CAPENABLED";
 402                                 break;
 403                         }
 404                 }
 405
 406                 if (funcalias == "")
 407                         funcalias = funcname
 408                 if (argalias == "") {
 409                         argalias = funcname "_args"
 410                         if (flag("COMPAT"))
 411                                 argalias = "o" argalias
 412                         if (flag("COMPAT4"))
 413                                 argalias = "freebsd4_" argalias
 414                         if (flag("COMPAT6"))
 415                                 argalias = "freebsd6_" argalias
 416                         if (flag("COMPAT7"))
 417                                 argalias = "freebsd7_" argalias
 418                         if (flag("COMPAT10"))
 419                                 argalias = "freebsd10_" argalias
 420                         if (flag("COMPAT11"))
 421                                 argalias = "freebsd11_" argalias
 422                         if (flag("COMPAT12"))
 423                                 argalias = "freebsd12_" argalias
 424                 }
 425                 f++
 426
 427                 if ($f != "(")
 428                         parserr($f, ")")
 429                 f++
 430
 431                 if (f == end) {
 432                         if ($f != "void")
 433                                 parserr($f, "argument definition")
 434                         return
 435                 }
 436
 437                 while (f <= end) {
 438                         argc++
 439                         argtype[argc]=""
 440                         oldf=""
 441                         while (f < end && $(f+1) != ",") {
 442                                 if (argtype[argc] != "" && oldf != "*")
 443                                         argtype[argc] = argtype[argc]" ";
 444                                 argtype[argc] = argtype[argc]$f;
 445                                 oldf = $f;
 446                                 f++
 447                         }
 448                         if (argtype[argc] == "")
 449                                 parserr($f, "argument definition")
 450
 451                         # The parser adds space around parens.
 452                         # Remove it from annotations.
 453                         gsub(/ \( /, "(", argtype[argc]);
 454                         gsub(/ \)/, ")", argtype[argc]);
 455
 456                         #remove annotations
 457                         gsub(/_In[^ ]*[_)] /, "", argtype[argc]);
 458                         gsub(/_Out[^ ]*[_)] /, "", argtype[argc]);
 459
 460                         argname[argc]=$f;
 461                         f += 2;                 # skip name, and any comma
 462                 }
 463                 if (argc != 0)
 464                         argssize = "AS(" argalias ")"
 465         }
 466         {       comment = $4
 467                 if (NF < 7)
 468                         for (i = 5; i <= NF; i++)
 469                                 comment = comment " " $i
 470         }
 471
 472         #
 473         # The AUE_ audit event identifier.
 474         #
 475         {
 476                 auditev = $2;
 477         }
 478
 479         #
 480         # The flags, if any.
 481         #
 482         {
 483                 flags = "0";
 484         }
 485
 486         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 487             || type("NOSTD") {
 488                 parseline()
 489                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 490                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 491                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
 492                 if (argc > 0) {
 493                         printf("\t\tswitch(ndx) {\n") > systracetmp
 494                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 495                         for (i = 1; i <= argc; i++) {
 496                                 arg = argtype[i]
 497                                 sub("__restrict$", "", arg)
 498                                 if (index(arg, "*") > 0)
 499                                         printf("\t\tcase %d:\n\t\t\tp = \"userland %s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 500                                 else
 501                                         printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 502                                 if (index(arg, "*") > 0 || arg == "caddr_t")
 503                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 504                                              i - 1, \
 505                                              argname[i], arg) > systrace
 506                                 else if (arg == "union l_semun")
 507                                         printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
 508                                              i - 1, \
 509                                              argname[i], arg) > systrace
 510                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 511                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 512                                              i - 1, \
 513                                              argname[i], arg) > systrace
 514                                 else
 515                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 516                                              i - 1, \
 517                                              argname[i], arg) > systrace
 518                         }
 519                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 520
 521                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
 522                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
 523                         printf("\t\tbreak;\n") > systraceret
 524                 }
 525                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 526                 printf("\t\tbreak;\n") > systracetmp
 527                 if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF")) {
 528                         if (argc != 0) {
 529                                 printf("struct %s {\n", argalias) > sysarg
 530                                 for (i = 1; i <= argc; i++)
 531                                         printf("\tchar %s_l_[PADL_(%s)]; " \
 532                                             "%s %s; char %s_r_[PADR_(%s)];\n",
 533                                             argname[i], argtype[i],
 534                                             argtype[i], argname[i],
 535                                             argname[i], argtype[i]) > sysarg
 536                                 printf("};\n") > sysarg
 537                         } else
 538                                 printf("struct %s {\n\tregister_t dummy;\n};\n",
 539                                     argalias) > sysarg
 540                 }
 541                 if (!flag("NOPROTO") && !flag("NODEF")) {
 542                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 543                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 544                             funcname ~ /^linux/ || funcname ~ /^cloudabi/) {
 545                                 printf("%s\t%s(struct thread *, struct %s *)",
 546                                     rettype, funcname, argalias) > sysdcl
 547                         } else {
 548                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 549                                     rettype, funcname, argalias) > sysdcl
 550                         }
 551                         printf(";\n") > sysdcl
 552                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 553                             funcalias, auditev) > sysaue
 554                 }
 555                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 556                 column = 8 + 2 + length(argssize) + 15
 557                 if (flag("NOSTD")) {
 558                         printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
 559                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 560                 } else {
 561                         if (funcname == "nosys" || funcname == "sysarch" ||
 562                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 563                             funcname ~ /^linux/ || funcname ~ /^cloudabi/) {
 564                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 565                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 566                         } else {
 567                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 568                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 569                         }
 570                 }
 571                 align_sysent_comment(column)
 572                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 573                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 574                     funcalias, syscall, funcalias) > sysnames
 575                 if (!flag("NODEF")) {
 576                         printf("#define\t%s%s\t%d\n", syscallprefix,
 577                             funcalias, syscall) > syshdr
 578                         printf(" \\\n\t%s.o", funcalias) > sysmk
 579                 }
 580                 syscall++
 581                 next
 582         }
 583         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 584             type("COMPAT7") || type("COMPAT10") || type("COMPAT11") || \
 585             type("COMPAT12") {
 586                 if (flag("COMPAT")) {
 587                         ncompat++
 588                         out = syscompat
 589                         outdcl = syscompatdcl
 590                         wrap = "compat"
 591                         prefix = "o"
 592                         descr = "old"
 593                 } else if (flag("COMPAT4")) {
 594                         ncompat4++
 595                         out = syscompat4
 596                         outdcl = syscompat4dcl
 597                         wrap = "compat4"
 598                         prefix = "freebsd4_"
 599                         descr = "freebsd4"
 600                 } else if (flag("COMPAT6")) {
 601                         ncompat6++
 602                         out = syscompat6
 603                         outdcl = syscompat6dcl
 604                         wrap = "compat6"
 605                         prefix = "freebsd6_"
 606                         descr = "freebsd6"
 607                 } else if (flag("COMPAT7")) {
 608                         ncompat7++
 609                         out = syscompat7
 610                         outdcl = syscompat7dcl
 611                         wrap = "compat7"
 612                         prefix = "freebsd7_"
 613                         descr = "freebsd7"
 614                 } else if (flag("COMPAT10")) {
 615                         ncompat10++
 616                         out = syscompat10
 617                         outdcl = syscompat10dcl
 618                         wrap = "compat10"
 619                         prefix = "freebsd10_"
 620                         descr = "freebsd10"
 621                 } else if (flag("COMPAT11")) {
 622                         ncompat11++
 623                         out = syscompat11
 624                         outdcl = syscompat11dcl
 625                         wrap = "compat11"
 626                         prefix = "freebsd11_"
 627                         descr = "freebsd11"
 628                 } else if (flag("COMPAT12")) {
 629                         ncompat12++
 630                         out = syscompat12
 631                         outdcl = syscompat12dcl
 632                         wrap = "compat12"
 633                         prefix = "freebsd12_"
 634                         descr = "freebsd12"
 635                 }
 636                 parseline()
 637                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 638                     !flag("NODEF")) {
 639                         printf("struct %s {\n", argalias) > out
 640                         for (i = 1; i <= argc; i++)
 641                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 642                                     "char %s_r_[PADR_(%s)];\n",
 643                                     argname[i], argtype[i],
 644                                     argtype[i], argname[i],
 645                                     argname[i], argtype[i]) > out
 646                         printf("};\n") > out
 647                 }
 648                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 649                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 650                             argalias) > sysarg
 651                 if (!flag("NOPROTO") && !flag("NODEF")) {
 652                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 653                             rettype, prefix, funcname, argalias) > outdcl
 654                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 655                             prefix, funcname, auditev) > sysaue
 656                 }
 657                 if (flag("NOSTD")) {
 658                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 659                             "0", "lkmressys", "AUE_NULL") > sysent
 660                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 661                             length("lkmressys") + length("AUE_NULL") + 3)
 662                 } else {
 663                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 664                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 665                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 666                             length(funcname) + length(auditev) + \
 667                             length(flags) + 4)
 668                 }
 669                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 670                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 671                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 672                 # Do not provide freebsdN_* symbols in libc for < FreeBSD 7
 673                 if (flag("COMPAT") || flag("COMPAT4") || flag("COMPAT6")) {
 674                         printf("\t\t\t\t/* %d is %s %s */\n",
 675                             syscall, descr, funcalias) > syshdr
 676                 } else if (!flag("NODEF")) {
 677                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 678                             prefix, funcalias, syscall) > syshdr
 679                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 680                 }
 681                 syscall++
 682                 next
 683         }
 684         type("OBSOL") {
 685                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 686                 align_sysent_comment(34)
 687                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 688                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 689                     $4, syscall, comment) > sysnames
 690                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 691                     syscall, comment) > syshdr
 692                 syscall++
 693                 next
 694         }
 695         type("UNIMPL") {
 696                 while (syscall <= syscall_range[2]) {
 697                         printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 698                             syscall, comment) > sysent
 699                         printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 700                             syscall, syscall, comment) > sysnames
 701                         syscall++
 702                 }
 703                 next
 704         }
 705         {
 706                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 707                 exit 1
 708         }
 709         END {
 710                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 711
 712                 if (ncompat != 0) {
 713                         printf "\n#ifdef %s\n", compat > sysinc
 714                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 715                         printf "#else\n" > sysinc
 716                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 717                         printf "#endif\n" > sysinc
 718                 }
 719
 720                 if (ncompat4 != 0) {
 721                         printf "\n#ifdef %s\n", compat4 > sysinc
 722                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 723                         printf "#else\n" > sysinc
 724                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 725                         printf "#endif\n" > sysinc
 726                 }
 727
 728                 if (ncompat6 != 0) {
 729                         printf "\n#ifdef %s\n", compat6 > sysinc
 730                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 731                         printf "#else\n" > sysinc
 732                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 733                         printf "#endif\n" > sysinc
 734                 }
 735
 736                 if (ncompat7 != 0) {
 737                         printf "\n#ifdef %s\n", compat7 > sysinc
 738                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 739                         printf "#else\n" > sysinc
 740                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 741                         printf "#endif\n" > sysinc
 742                 }
 743                 if (ncompat10 != 0) {
 744                         printf "\n#ifdef %s\n", compat10 > sysinc
 745                         printf "#define compat10(n, name) n, (sy_call_t *)__CONCAT(freebsd10_,name)\n" > sysinc
 746                         printf "#else\n" > sysinc
 747                         printf "#define compat10(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 748                         printf "#endif\n" > sysinc
 749                 }
 750                 if (ncompat11 != 0) {
 751                         printf "\n#ifdef %s\n", compat11 > sysinc
 752                         printf "#define compat11(n, name) n, (sy_call_t *)__CONCAT(freebsd11_,name)\n" > sysinc
 753                         printf "#else\n" > sysinc
 754                         printf "#define compat11(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 755                         printf "#endif\n" > sysinc
 756                 }
 757                 if (ncompat12 != 0) {
 758                         printf "\n#ifdef %s\n", compat12 > sysinc
 759                         printf "#define compat12(n, name) n, (sy_call_t *)__CONCAT(freebsd12_,name)\n" > sysinc
 760                         printf "#else\n" > sysinc
 761                         printf "#define compat12(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 762                         printf "#endif\n" > sysinc
 763                 }
 764
 765                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 766                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 767                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 768                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 769                 printf("\n#endif /* %s */\n\n", compat10) > syscompat10dcl
 770                 printf("\n#endif /* %s */\n\n", compat11) > syscompat11dcl
 771                 printf("\n#endif /* %s */\n\n", compat12) > syscompat12dcl
 772
 773                 printf("\n#undef PAD_\n") > sysprotoend
 774                 printf("#undef PADL_\n") > sysprotoend
 775                 printf("#undef PADR_\n") > sysprotoend
 776                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 777
 778                 printf("\n") > sysmk
 779                 printf("};\n") > sysent
 780                 printf("};\n") > sysnames
 781                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 782                     > syshdr
 783                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 784                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 785                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
 786         } '
 787
 788 cat $sysinc $sysent >> $syssw
 789 cat $sysarg $sysdcl \
 790         $syscompat $syscompatdcl \
 791         $syscompat4 $syscompat4dcl \
 792         $syscompat6 $syscompat6dcl \
 793         $syscompat7 $syscompat7dcl \
 794         $syscompat10 $syscompat10dcl \
 795         $syscompat11 $syscompat11dcl \
 796         $syscompat12 $syscompat12dcl \
 797         $sysaue $sysprotoend > $sysproto
 798 cat $systracetmp >> $systrace
 799 cat $systraceret >> $systrace
 800