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 1>&2 echo "$0: This script has been replaced by sys/tools/makesyscalls.lua and"
  64 1>&2 echo "$0: will be removed before FreeBSD 13.  See also: sys/conf/sysent.mk"
  65
  66 if [ -n "$2" ]; then
  67         . "$2"
  68 fi
  69
  70 if [ -n "$capenabled" ]; then
  71         # do nothing
  72 elif [ -r $capabilities_conf ]; then
  73         capenabled=`egrep -v '^#|^$' $capabilities_conf`
  74         capenabled=`echo $capenabled | sed 's/ /,/g'`
  75 else
  76         capenabled=""
  77 fi
  78
  79 sed -e '
  80         # FreeBSD ID, includes, comments, and blank lines
  81         /.*\$FreeBSD/b done_joining
  82         /^[#;]/b done_joining
  83         /^$/b done_joining
  84
  85         # Join lines ending in backslash
  86 :joining
  87         /\\$/{a\
  88
  89         N
  90         s/\\\n//
  91         b joining
  92         }
  93
  94         # OBSOL, etc lines without function signatures
  95         /^[0-9][^{]*$/b done_joining
  96
  97         # Join incomplete signatures.  The { must appear on the first line
  98         # and the } must appear on the last line (modulo lines joined by
  99         # backslashes).
 100         /^[^}]*$/{a\
 101
 102         N
 103         s/\n//
 104         b joining
 105         }
 106 :done_joining
 107 2,${
 108         /^#/!s/\([{}()*,]\)/ \1 /g
 109 }
 110 ' < $1 | awk "
 111         BEGIN {
 112                 sysaue = \"$sysaue\"
 113                 sysdcl = \"$sysdcl\"
 114                 sysproto = \"$sysproto\"
 115                 sysprotoend = \"$sysprotoend\"
 116                 sysproto_h = \"$sysproto_h\"
 117                 syscompat = \"$syscompat\"
 118                 syscompatdcl = \"$syscompatdcl\"
 119                 syscompat4 = \"$syscompat4\"
 120                 syscompat4dcl = \"$syscompat4dcl\"
 121                 syscompat6 = \"$syscompat6\"
 122                 syscompat6dcl = \"$syscompat6dcl\"
 123                 syscompat7 = \"$syscompat7\"
 124                 syscompat7dcl = \"$syscompat7dcl\"
 125                 syscompat10 = \"$syscompat10\"
 126                 syscompat10dcl = \"$syscompat10dcl\"
 127                 syscompat11 = \"$syscompat11\"
 128                 syscompat11dcl = \"$syscompat11dcl\"
 129                 syscompat12 = \"$syscompat12\"
 130                 syscompat12dcl = \"$syscompat12dcl\"
 131                 sysent = \"$sysent\"
 132                 syssw = \"$syssw\"
 133                 sysinc = \"$sysinc\"
 134                 sysarg = \"$sysarg\"
 135                 sysnames = \"$sysnames\"
 136                 syshdr = \"$syshdr\"
 137                 sysmk = \"$sysmk\"
 138                 systrace = \"$systrace\"
 139                 systracetmp = \"$systracetmp\"
 140                 systraceret = \"$systraceret\"
 141                 compat = \"$compat\"
 142                 compat4 = \"$compat4\"
 143                 compat6 = \"$compat6\"
 144                 compat7 = \"$compat7\"
 145                 compat10 = \"$compat10\"
 146                 compat11 = \"$compat11\"
 147                 compat12 = \"$compat12\"
 148                 syscallprefix = \"$syscallprefix\"
 149                 switchname = \"$switchname\"
 150                 namesname = \"$namesname\"
 151                 infile = \"$1\"
 152                 abi_func_prefix = \"$abi_func_prefix\"
 153                 capenabled_string = \"$capenabled\"
 154                 "'
 155
 156                 # Avoid a literal generated file tag here.
 157                 generated = "@" "generated";
 158
 159                 split(capenabled_string, capenabled, ",");
 160
 161                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 162                 printf "struct sysent %s[] = {\n",switchname > sysent
 163
 164                 printf "/*\n * System call switch table.\n *\n" > syssw
 165                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > syssw
 166                 printf " * $%s$\n", "FreeBSD" > syssw
 167                 printf " */\n\n" > syssw
 168
 169                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 170                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > sysarg
 171                 printf " * $%s$\n", "FreeBSD" > sysarg
 172                 printf " */\n\n" > sysarg
 173                 printf "#ifndef %s\n", sysproto_h > sysarg
 174                 printf "#define\t%s\n\n", sysproto_h > sysarg
 175                 printf "#include <sys/signal.h>\n" > sysarg
 176                 printf "#include <sys/acl.h>\n" > sysarg
 177                 printf "#include <sys/cpuset.h>\n" > sysarg
 178                 printf "#include <sys/domainset.h>\n" > sysarg
 179                 printf "#include <sys/_ffcounter.h>\n" > sysarg
 180                 printf "#include <sys/_semaphore.h>\n" > sysarg
 181                 printf "#include <sys/ucontext.h>\n" > sysarg
 182                 printf "#include <sys/wait.h>\n\n" > sysarg
 183                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 184                 printf "struct proc;\n\n" > sysarg
 185                 printf "struct thread;\n\n" > sysarg
 186                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 187                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 188                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 189                 printf "#define\tPADL_(t)\t0\n" > sysarg
 190                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 191                 printf "#else\n" > sysarg
 192                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 193                 printf "#define\tPADR_(t)\t0\n" > sysarg
 194                 printf "#endif\n\n" > sysarg
 195
 196                 printf "\n#ifdef %s\n\n", compat > syscompat
 197                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 198                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 199                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
 200                 printf "\n#ifdef %s\n\n", compat10 > syscompat10
 201                 printf "\n#ifdef %s\n\n", compat11 > syscompat11
 202                 printf "\n#ifdef %s\n\n", compat12 > syscompat12
 203
 204                 printf "/*\n * System call names.\n *\n" > sysnames
 205                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > sysnames
 206                 printf " * $%s$\n", "FreeBSD" > sysnames
 207                 printf " */\n\n" > sysnames
 208                 printf "const char *%s[] = {\n", namesname > sysnames
 209
 210                 printf "/*\n * System call numbers.\n *\n" > syshdr
 211                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > syshdr
 212                 printf " * $%s$\n", "FreeBSD" > syshdr
 213                 printf " */\n\n" > syshdr
 214
 215                 printf "# FreeBSD system call object files.\n" > sysmk
 216                 printf "# DO NOT EDIT-- this file is automatically " generated ".\n" > sysmk
 217                 printf "# $%s$\n", "FreeBSD" > sysmk
 218                 printf "MIASM = " > sysmk
 219
 220                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 221                 printf " * DO NOT EDIT-- this file is automatically " generated ".\n" > systrace
 222                 printf " * $%s$\n", "FreeBSD" > systrace
 223                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 224                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
 225                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 226                 printf "\tswitch (sysnum) {\n" > systrace
 227
 228                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 229                 printf "\tswitch (sysnum) {\n" > systracetmp
 230
 231                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
 232                 printf "\tswitch (sysnum) {\n" > systraceret
 233         }
 234         NR == 1 {
 235                 next
 236         }
 237         NF == 0 || $1 ~ /^;/ {
 238                 next
 239         }
 240         $1 ~ /^#[       ]*include/ {
 241                 print > sysinc
 242                 next
 243         }
 244         $1 ~ /^#[       ]*if/ {
 245                 print > sysent
 246                 print > sysdcl
 247                 print > sysarg
 248                 print > syscompat
 249                 print > syscompat4
 250                 print > syscompat6
 251                 print > syscompat7
 252                 print > syscompat10
 253                 print > syscompat11
 254                 print > syscompat12
 255                 print > sysnames
 256                 print > systrace
 257                 print > systracetmp
 258                 print > systraceret
 259                 savesyscall = syscall
 260                 next
 261         }
 262         $1 ~ /^#[       ]*else/ {
 263                 print > sysent
 264                 print > sysdcl
 265                 print > sysarg
 266                 print > syscompat
 267                 print > syscompat4
 268                 print > syscompat6
 269                 print > syscompat7
 270                 print > syscompat10
 271                 print > syscompat11
 272                 print > syscompat12
 273                 print > sysnames
 274                 print > systrace
 275                 print > systracetmp
 276                 print > systraceret
 277                 syscall = savesyscall
 278                 next
 279         }
 280         $1 ~ /^#/ {
 281                 print > sysent
 282                 print > sysdcl
 283                 print > sysarg
 284                 print > syscompat
 285                 print > syscompat4
 286                 print > syscompat6
 287                 print > syscompat7
 288                 print > syscompat10
 289                 print > syscompat11
 290                 print > syscompat12
 291                 print > sysnames
 292                 print > systrace
 293                 print > systracetmp
 294                 print > systraceret
 295                 next
 296         }
 297         # Returns true if the type "name" is the first flag in the type field
 298         function type(name, flags, n) {
 299                 n = split($3, flags, /\|/)
 300                 return (n > 0 && flags[1] == name)
 301         }
 302         # Returns true if the flag "name" is set in the type field
 303         function flag(name, flags, i, n) {
 304                 n = split($3, flags, /\|/)
 305                 for (i = 1; i <= n; i++)
 306                         if (flags[i] == name)
 307                                 return 1
 308                 return 0
 309         }
 310         {
 311                 n = split($1, syscall_range, /-/)
 312                 if (n == 1) {
 313                         syscall_range[2] = syscall_range[1]
 314                 } else if (n == 2) {
 315                         if (!type("UNIMPL")) {
 316                                 printf "%s: line %d: range permitted only with UNIMPL\n",
 317                                     infile, NR
 318                                 exit 1
 319                         }
 320                 } else {
 321                         printf "%s: line %d: invalid syscall number or range %s\n",
 322                             infile, NR, $1
 323                         exit 1
 324                 }
 325         }
 326         syscall != syscall_range[1] {
 327                 printf "%s: line %d: syscall number out of sync at %d\n",
 328                     infile, NR, syscall
 329                 printf "line is:\n"
 330                 print
 331                 exit 1
 332         }
 333         function align_sysent_comment(column) {
 334                 printf("\t") > sysent
 335                 column = column + 8 - column % 8
 336                 while (column < 56) {
 337                         printf("\t") > sysent
 338                         column = column + 8
 339                 }
 340         }
 341         function parserr(was, wanted) {
 342                 printf "%s: line %d: unexpected %s (expected %s)\n",
 343                     infile, NR, was, wanted
 344                 exit 1
 345         }
 346         function parseline() {
 347                 f=4                     # toss number, type, audit event
 348                 ret_inc = 0
 349                 argc= 0;
 350                 argssize = "0"
 351                 thr_flag = "SY_THR_STATIC"
 352                 if (flag("NOTSTATIC")) {
 353                         thr_flag = "SY_THR_ABSENT"
 354                 }
 355                 if ($NF != "}") {
 356                         funcalias=$(NF-2)
 357                         argalias=$(NF-1)
 358                         rettype=$NF
 359                         end=NF-3
 360                 } else {
 361                         funcalias=""
 362                         argalias=""
 363                         rettype="int"
 364                         if ($(f+2) == "*") {
 365                                 ret_inc = 1
 366                         }
 367                         end=NF
 368                 }
 369                 if (flag("NODEF")) {
 370                         auditev="AUE_NULL"
 371                         funcname=$(4 + ret_inc)
 372                         argssize = "AS(" $(6 + ret_inc) ")"
 373                         return
 374                 }
 375                 if ($f != "{")
 376                         parserr($f, "{")
 377                 f++
 378                 if ($end != "}")
 379                         parserr($end, "}")
 380                 end--
 381                 if ($end != ";")
 382                         parserr($end, ";")
 383                 end--
 384                 if ($end != ")")
 385                         parserr($end, ")")
 386                 end--
 387
 388                 syscallret=$f
 389                 f++
 390                 while (ret_inc > 0) {
 391                         syscallret=syscallret " " $f
 392                         f++
 393                         ret_inc--
 394                 }
 395
 396                 funcname=$f
 397
 398                 #
 399                 # We now know the func name, so define a flags field for it.
 400                 # Do this before any other processing as we may return early
 401                 # from it.
 402                 #
 403                 for (cap in capenabled) {
 404                         if (funcname == capenabled[cap] ||
 405                             funcname == abi_func_prefix capenabled[cap]) {
 406                                 flags = "SYF_CAPENABLED";
 407                                 break;
 408                         }
 409                 }
 410
 411                 if (funcalias == "")
 412                         funcalias = funcname
 413                 if (argalias == "") {
 414                         argalias = funcname "_args"
 415                         if (flag("COMPAT"))
 416                                 argalias = "o" argalias
 417                         if (flag("COMPAT4"))
 418                                 argalias = "freebsd4_" argalias
 419                         if (flag("COMPAT6"))
 420                                 argalias = "freebsd6_" argalias
 421                         if (flag("COMPAT7"))
 422                                 argalias = "freebsd7_" argalias
 423                         if (flag("COMPAT10"))
 424                                 argalias = "freebsd10_" argalias
 425                         if (flag("COMPAT11"))
 426                                 argalias = "freebsd11_" argalias
 427                         if (flag("COMPAT12"))
 428                                 argalias = "freebsd12_" argalias
 429                 }
 430                 f++
 431
 432                 if ($f != "(")
 433                         parserr($f, ")")
 434                 f++
 435
 436                 if (f == end) {
 437                         if ($f != "void")
 438                                 parserr($f, "argument definition")
 439                         return
 440                 }
 441
 442                 while (f <= end) {
 443                         argc++
 444                         argtype[argc]=""
 445                         oldf=""
 446                         while (f < end && $(f+1) != ",") {
 447                                 if (argtype[argc] != "" && oldf != "*")
 448                                         argtype[argc] = argtype[argc]" ";
 449                                 argtype[argc] = argtype[argc]$f;
 450                                 oldf = $f;
 451                                 f++
 452                         }
 453                         if (argtype[argc] == "")
 454                                 parserr($f, "argument definition")
 455
 456                         # The parser adds space around parens.
 457                         # Remove it from annotations.
 458                         gsub(/ \( /, "(", argtype[argc]);
 459                         gsub(/ \)/, ")", argtype[argc]);
 460
 461                         #remove annotations
 462                         gsub(/_In[^ ]*[_)] /, "", argtype[argc]);
 463                         gsub(/_Out[^ ]*[_)] /, "", argtype[argc]);
 464
 465                         argname[argc]=$f;
 466                         f += 2;                 # skip name, and any comma
 467                 }
 468                 if (argc != 0)
 469                         argssize = "AS(" argalias ")"
 470         }
 471         {       comment = $4
 472                 if (NF < 7)
 473                         for (i = 5; i <= NF; i++)
 474                                 comment = comment " " $i
 475         }
 476
 477         #
 478         # The AUE_ audit event identifier.
 479         #
 480         {
 481                 auditev = $2;
 482         }
 483
 484         #
 485         # The flags, if any.
 486         #
 487         {
 488                 flags = "0";
 489         }
 490
 491         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
 492             || type("NOSTD") {
 493                 parseline()
 494                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 495                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 496                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
 497                 if (argc > 0) {
 498                         printf("\t\tswitch(ndx) {\n") > systracetmp
 499                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 500                         for (i = 1; i <= argc; i++) {
 501                                 arg = argtype[i]
 502                                 sub("__restrict$", "", arg)
 503                                 if (index(arg, "*") > 0)
 504                                         printf("\t\tcase %d:\n\t\t\tp = \"userland %s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 505                                 else
 506                                         printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
 507                                 if (index(arg, "*") > 0 || arg == "caddr_t")
 508                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 509                                              i - 1, \
 510                                              argname[i], arg) > systrace
 511                                 else if (arg == "union l_semun")
 512                                         printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
 513                                              i - 1, \
 514                                              argname[i], arg) > systrace
 515                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
 516                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 517                                              i - 1, \
 518                                              argname[i], arg) > systrace
 519                                 else
 520                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 521                                              i - 1, \
 522                                              argname[i], arg) > systrace
 523                         }
 524                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 525
 526                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
 527                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
 528                         printf("\t\tbreak;\n") > systraceret
 529                 }
 530                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 531                 printf("\t\tbreak;\n") > systracetmp
 532                 if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF")) {
 533                         if (argc != 0) {
 534                                 printf("struct %s {\n", argalias) > sysarg
 535                                 for (i = 1; i <= argc; i++)
 536                                         printf("\tchar %s_l_[PADL_(%s)]; " \
 537                                             "%s %s; char %s_r_[PADR_(%s)];\n",
 538                                             argname[i], argtype[i],
 539                                             argtype[i], argname[i],
 540                                             argname[i], argtype[i]) > sysarg
 541                                 printf("};\n") > sysarg
 542                         } else
 543                                 printf("struct %s {\n\tregister_t dummy;\n};\n",
 544                                     argalias) > sysarg
 545                 }
 546                 if (!flag("NOPROTO") && !flag("NODEF")) {
 547                         if (funcname == "nosys" || funcname == "lkmnosys" ||
 548                             funcname == "sysarch" || funcname ~ /^freebsd/ ||
 549                             funcname ~ /^linux/ || funcname ~ /^cloudabi/) {
 550                                 printf("%s\t%s(struct thread *, struct %s *)",
 551                                     rettype, funcname, argalias) > sysdcl
 552                         } else {
 553                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
 554                                     rettype, funcname, argalias) > sysdcl
 555                         }
 556                         printf(";\n") > sysdcl
 557                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 558                             funcalias, auditev) > sysaue
 559                 }
 560                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 561                 column = 8 + 2 + length(argssize) + 15
 562                 if (flag("NOSTD")) {
 563                         printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
 564                         column = column + length("lkmressys") + length("AUE_NULL") + 3
 565                 } else {
 566                         if (funcname == "nosys" || funcname == "sysarch" ||
 567                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
 568                             funcname ~ /^linux/ || funcname ~ /^cloudabi/) {
 569                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 570                                 column = column + length(funcname) + length(auditev) + length(flags) + 3
 571                         } else {
 572                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
 573                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
 574                         }
 575                 }
 576                 align_sysent_comment(column)
 577                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 578                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 579                     funcalias, syscall, funcalias) > sysnames
 580                 if (!flag("NODEF")) {
 581                         printf("#define\t%s%s\t%d\n", syscallprefix,
 582                             funcalias, syscall) > syshdr
 583                         printf(" \\\n\t%s.o", funcalias) > sysmk
 584                 }
 585                 syscall++
 586                 next
 587         }
 588         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
 589             type("COMPAT7") || type("COMPAT10") || type("COMPAT11") || \
 590             type("COMPAT12") {
 591                 if (flag("COMPAT")) {
 592                         ncompat++
 593                         out = syscompat
 594                         outdcl = syscompatdcl
 595                         wrap = "compat"
 596                         prefix = "o"
 597                         descr = "old"
 598                 } else if (flag("COMPAT4")) {
 599                         ncompat4++
 600                         out = syscompat4
 601                         outdcl = syscompat4dcl
 602                         wrap = "compat4"
 603                         prefix = "freebsd4_"
 604                         descr = "freebsd4"
 605                 } else if (flag("COMPAT6")) {
 606                         ncompat6++
 607                         out = syscompat6
 608                         outdcl = syscompat6dcl
 609                         wrap = "compat6"
 610                         prefix = "freebsd6_"
 611                         descr = "freebsd6"
 612                 } else if (flag("COMPAT7")) {
 613                         ncompat7++
 614                         out = syscompat7
 615                         outdcl = syscompat7dcl
 616                         wrap = "compat7"
 617                         prefix = "freebsd7_"
 618                         descr = "freebsd7"
 619                 } else if (flag("COMPAT10")) {
 620                         ncompat10++
 621                         out = syscompat10
 622                         outdcl = syscompat10dcl
 623                         wrap = "compat10"
 624                         prefix = "freebsd10_"
 625                         descr = "freebsd10"
 626                 } else if (flag("COMPAT11")) {
 627                         ncompat11++
 628                         out = syscompat11
 629                         outdcl = syscompat11dcl
 630                         wrap = "compat11"
 631                         prefix = "freebsd11_"
 632                         descr = "freebsd11"
 633                 } else if (flag("COMPAT12")) {
 634                         ncompat12++
 635                         out = syscompat12
 636                         outdcl = syscompat12dcl
 637                         wrap = "compat12"
 638                         prefix = "freebsd12_"
 639                         descr = "freebsd12"
 640                 }
 641                 parseline()
 642                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
 643                     !flag("NODEF")) {
 644                         printf("struct %s {\n", argalias) > out
 645                         for (i = 1; i <= argc; i++)
 646                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 647                                     "char %s_r_[PADR_(%s)];\n",
 648                                     argname[i], argtype[i],
 649                                     argtype[i], argname[i],
 650                                     argname[i], argtype[i]) > out
 651                         printf("};\n") > out
 652                 }
 653                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
 654                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 655                             argalias) > sysarg
 656                 if (!flag("NOPROTO") && !flag("NODEF")) {
 657                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
 658                             rettype, prefix, funcname, argalias) > outdcl
 659                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
 660                             prefix, funcname, auditev) > sysaue
 661                 }
 662                 if (flag("NOSTD")) {
 663                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
 664                             "0", "lkmressys", "AUE_NULL") > sysent
 665                         align_sysent_comment(8 + 2 + length("0") + 15 + \
 666                             length("lkmressys") + length("AUE_NULL") + 3)
 667                 } else {
 668                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
 669                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
 670                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
 671                             length(funcname) + length(auditev) + \
 672                             length(flags) + 4)
 673                 }
 674                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
 675                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
 676                     wrap, funcalias, syscall, descr, funcalias) > sysnames
 677                 # Do not provide freebsdN_* symbols in libc for < FreeBSD 7
 678                 if (flag("COMPAT") || flag("COMPAT4") || flag("COMPAT6")) {
 679                         printf("\t\t\t\t/* %d is %s %s */\n",
 680                             syscall, descr, funcalias) > syshdr
 681                 } else if (!flag("NODEF")) {
 682                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 683                             prefix, funcalias, syscall) > syshdr
 684                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 685                 }
 686                 syscall++
 687                 next
 688         }
 689         type("OBSOL") {
 690                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
 691                 align_sysent_comment(34)
 692                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 693                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 694                     $4, syscall, comment) > sysnames
 695                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 696                     syscall, comment) > syshdr
 697                 syscall++
 698                 next
 699         }
 700         type("UNIMPL") {
 701                 while (syscall <= syscall_range[2]) {
 702                         printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
 703                             syscall, comment) > sysent
 704                         printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 705                             syscall, syscall, comment) > sysnames
 706                         syscall++
 707                 }
 708                 next
 709         }
 710         {
 711                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 712                 exit 1
 713         }
 714         END {
 715                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 716
 717                 if (ncompat != 0) {
 718                         printf "\n#ifdef %s\n", compat > sysinc
 719                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 720                         printf "#else\n" > sysinc
 721                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 722                         printf "#endif\n" > sysinc
 723                 }
 724
 725                 if (ncompat4 != 0) {
 726                         printf "\n#ifdef %s\n", compat4 > sysinc
 727                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 728                         printf "#else\n" > sysinc
 729                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 730                         printf "#endif\n" > sysinc
 731                 }
 732
 733                 if (ncompat6 != 0) {
 734                         printf "\n#ifdef %s\n", compat6 > sysinc
 735                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 736                         printf "#else\n" > sysinc
 737                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 738                         printf "#endif\n" > sysinc
 739                 }
 740
 741                 if (ncompat7 != 0) {
 742                         printf "\n#ifdef %s\n", compat7 > sysinc
 743                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
 744                         printf "#else\n" > sysinc
 745                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 746                         printf "#endif\n" > sysinc
 747                 }
 748                 if (ncompat10 != 0) {
 749                         printf "\n#ifdef %s\n", compat10 > sysinc
 750                         printf "#define compat10(n, name) n, (sy_call_t *)__CONCAT(freebsd10_,name)\n" > sysinc
 751                         printf "#else\n" > sysinc
 752                         printf "#define compat10(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 753                         printf "#endif\n" > sysinc
 754                 }
 755                 if (ncompat11 != 0) {
 756                         printf "\n#ifdef %s\n", compat11 > sysinc
 757                         printf "#define compat11(n, name) n, (sy_call_t *)__CONCAT(freebsd11_,name)\n" > sysinc
 758                         printf "#else\n" > sysinc
 759                         printf "#define compat11(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 760                         printf "#endif\n" > sysinc
 761                 }
 762                 if (ncompat12 != 0) {
 763                         printf "\n#ifdef %s\n", compat12 > sysinc
 764                         printf "#define compat12(n, name) n, (sy_call_t *)__CONCAT(freebsd12_,name)\n" > sysinc
 765                         printf "#else\n" > sysinc
 766                         printf "#define compat12(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 767                         printf "#endif\n" > sysinc
 768                 }
 769
 770                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 771                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 772                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 773                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
 774                 printf("\n#endif /* %s */\n\n", compat10) > syscompat10dcl
 775                 printf("\n#endif /* %s */\n\n", compat11) > syscompat11dcl
 776                 printf("\n#endif /* %s */\n\n", compat12) > syscompat12dcl
 777
 778                 printf("\n#undef PAD_\n") > sysprotoend
 779                 printf("#undef PADL_\n") > sysprotoend
 780                 printf("#undef PADR_\n") > sysprotoend
 781                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 782
 783                 printf("\n") > sysmk
 784                 printf("};\n") > sysent
 785                 printf("};\n") > sysnames
 786                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 787                     > syshdr
 788                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 789                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 790                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
 791         } '
 792
 793 cat $sysinc $sysent >> $syssw
 794 cat $sysarg $sysdcl \
 795         $syscompat $syscompatdcl \
 796         $syscompat4 $syscompat4dcl \
 797         $syscompat6 $syscompat6dcl \
 798         $syscompat7 $syscompat7dcl \
 799         $syscompat10 $syscompat10dcl \
 800         $syscompat11 $syscompat11dcl \
 801         $syscompat12 $syscompat12dcl \
 802         $sysaue $sysprotoend > $sysproto
 803 cat $systracetmp >> $systrace
 804 cat $systraceret >> $systrace
 805