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
  12 # output files:
  13 sysnames="syscalls.c"
  14 sysproto="../sys/sysproto.h"
  15 sysproto_h=_SYS_SYSPROTO_H_
  16 syshdr="../sys/syscall.h"
  17 sysmk="../sys/syscall.mk"
  18 syssw="init_sysent.c"
  19 syscallprefix="SYS_"
  20 switchname="sysent"
  21 namesname="syscallnames"
  22 systrace="systrace_args.c"
  23
  24 # tmp files:
  25 sysaue="sysent.aue.$$"
  26 sysdcl="sysent.dcl.$$"
  27 syscompat="sysent.compat.$$"
  28 syscompatdcl="sysent.compatdcl.$$"
  29 syscompat4="sysent.compat4.$$"
  30 syscompat4dcl="sysent.compat4dcl.$$"
  31 syscompat6="sysent.compat6.$$"
  32 syscompat6dcl="sysent.compat6dcl.$$"
  33 sysent="sysent.switch.$$"
  34 sysinc="sysinc.switch.$$"
  35 sysarg="sysarg.switch.$$"
  36 sysprotoend="sysprotoend.$$"
  37 systracetmp="systrace.$$"
  38
  39 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp" 0
  40
  41 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp
  42
  43 case $# in
  44     0)  echo "usage: $0 input-file <config-file>" 1>&2
  45         exit 1
  46         ;;
  47 esac
  48
  49 if [ -n "$2" -a -f "$2" ]; then
  50         . $2
  51 fi
  52
  53 sed -e '
  54 s/\$//g
  55 :join
  56         /\\$/{a\
  57
  58         N
  59         s/\\\n//
  60         b join
  61         }
  62 2,${
  63         /^#/!s/\([{}()*,]\)/ \1 /g
  64 }
  65 ' < $1 | awk "
  66         BEGIN {
  67                 sysaue = \"$sysaue\"
  68                 sysdcl = \"$sysdcl\"
  69                 sysproto = \"$sysproto\"
  70                 sysprotoend = \"$sysprotoend\"
  71                 sysproto_h = \"$sysproto_h\"
  72                 syscompat = \"$syscompat\"
  73                 syscompatdcl = \"$syscompatdcl\"
  74                 syscompat4 = \"$syscompat4\"
  75                 syscompat4dcl = \"$syscompat4dcl\"
  76                 syscompat6 = \"$syscompat6\"
  77                 syscompat6dcl = \"$syscompat6dcl\"
  78                 sysent = \"$sysent\"
  79                 syssw = \"$syssw\"
  80                 sysinc = \"$sysinc\"
  81                 sysarg = \"$sysarg\"
  82                 sysnames = \"$sysnames\"
  83                 syshdr = \"$syshdr\"
  84                 sysmk = \"$sysmk\"
  85                 systrace = \"$systrace\"
  86                 systracetmp = \"$systracetmp\"
  87                 compat = \"$compat\"
  88                 compat4 = \"$compat4\"
  89                 compat6 = \"$compat6\"
  90                 syscallprefix = \"$syscallprefix\"
  91                 switchname = \"$switchname\"
  92                 namesname = \"$namesname\"
  93                 infile = \"$1\"
  94                 "'
  95
  96                 printf "/*\n * System call switch table.\n *\n" > syssw
  97                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  98                 printf " * $%s$\n", "FreeBSD" > syssw
  99
 100                 printf "/*\n * System call prototypes.\n *\n" > sysarg
 101                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
 102                 printf " * $%s$\n", "FreeBSD" > sysarg
 103
 104                 printf "\n#ifdef %s\n\n", compat > syscompat
 105                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
 106                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
 107
 108                 printf "/*\n * System call names.\n *\n" > sysnames
 109                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
 110                 printf " * $%s$\n", "FreeBSD" > sysnames
 111
 112                 printf "/*\n * System call numbers.\n *\n" > syshdr
 113                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 114                 printf " * $%s$\n", "FreeBSD" > syshdr
 115                 printf "# FreeBSD system call names.\n" > sysmk
 116                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 117                 printf "# $%s$\n", "FreeBSD" > sysmk
 118
 119                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
 120                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
 121                 printf " * $%s$\n", "FreeBSD" > systrace
 122         }
 123         NR == 1 {
 124                 gsub("[$]FreeBSD: ", "", $0)
 125                 gsub(" [$]", "", $0)
 126
 127                 printf " * created from%s\n */\n\n", $0 > syssw
 128
 129                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 130                 printf "struct sysent %s[] = {\n",switchname > sysent
 131
 132                 printf " * created from%s\n */\n\n", $0 > sysarg
 133                 printf "#ifndef %s\n", sysproto_h > sysarg
 134                 printf "#define\t%s\n\n", sysproto_h > sysarg
 135                 printf "#include <sys/signal.h>\n" > sysarg
 136                 printf "#include <sys/acl.h>\n" > sysarg
 137                 printf "#include <sys/cpuset.h>\n" > sysarg
 138                 printf "#include <sys/_semaphore.h>\n" > sysarg
 139                 printf "#include <sys/ucontext.h>\n\n" > sysarg
 140                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
 141                 printf "struct proc;\n\n" > sysarg
 142                 printf "struct thread;\n\n" > sysarg
 143                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 144                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 145                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 146                 printf "#define\tPADL_(t)\t0\n" > sysarg
 147                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 148                 printf "#else\n" > sysarg
 149                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 150                 printf "#define\tPADR_(t)\t0\n" > sysarg
 151                 printf "#endif\n\n" > sysarg
 152
 153                 printf " * created from%s\n */\n\n", $0 > sysnames
 154                 printf "const char *%s[] = {\n", namesname > sysnames
 155
 156                 printf " * created from%s\n */\n\n", $0 > syshdr
 157
 158                 printf "# created from%s\nMIASM = ", $0 > sysmk
 159
 160                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
 161                 printf "static void\nsystrace_args(int sysnum, void *params, u_int64_t *uarg, int *n_args)\n{\n" > systrace
 162                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
 163                 printf "\tswitch (sysnum) {\n" > systrace
 164
 165                 printf "static void\nsystrace_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
 166                 printf "\tswitch (sysnum) {\n" > systracetmp
 167
 168                 next
 169         }
 170         NF == 0 || $1 ~ /^;/ {
 171                 next
 172         }
 173         $1 ~ /^#[       ]*include/ {
 174                 print > sysinc
 175                 next
 176         }
 177         $1 ~ /^#[       ]*if/ {
 178                 print > sysent
 179                 print > sysdcl
 180                 print > sysarg
 181                 print > syscompat
 182                 print > syscompat4
 183                 print > syscompat6
 184                 print > sysnames
 185                 savesyscall = syscall
 186                 next
 187         }
 188         $1 ~ /^#[       ]*else/ {
 189                 print > sysent
 190                 print > sysdcl
 191                 print > sysarg
 192                 print > syscompat
 193                 print > syscompat4
 194                 print > syscompat6
 195                 print > sysnames
 196                 syscall = savesyscall
 197                 next
 198         }
 199         $1 ~ /^#/ {
 200                 print > sysent
 201                 print > sysdcl
 202                 print > sysarg
 203                 print > syscompat
 204                 print > syscompat4
 205                 print > syscompat6
 206                 print > sysnames
 207                 next
 208         }
 209         syscall != $1 {
 210                 printf "%s: line %d: syscall number out of sync at %d\n",
 211                     infile, NR, syscall
 212                 printf "line is:\n"
 213                 print
 214                 exit 1
 215         }
 216         function align_sysent_comment(column) {
 217                 printf("\t") > sysent
 218                 column = column + 8 - column % 8
 219                 while (column < 56) {
 220                         printf("\t") > sysent
 221                         column = column + 8
 222                 }
 223         }
 224         function parserr(was, wanted) {
 225                 printf "%s: line %d: unexpected %s (expected %s)\n",
 226                     infile, NR, was, wanted
 227                 exit 1
 228         }
 229         function parseline() {
 230                 f=4                     # toss number, type, audit event
 231                 argc= 0;
 232                 argssize = "0"
 233                 if ($NF != "}") {
 234                         funcalias=$(NF-2)
 235                         argalias=$(NF-1)
 236                         rettype=$NF
 237                         end=NF-3
 238                 } else {
 239                         funcalias=""
 240                         argalias=""
 241                         rettype="int"
 242                         end=NF
 243                 }
 244                 if ($3 == "NODEF") {
 245                         auditev="AUE_NULL"
 246                         funcname=$4
 247                         argssize = "AS(" $6 ")"
 248                         return
 249                 }
 250                 if ($f != "{")
 251                         parserr($f, "{")
 252                 f++
 253                 if ($end != "}")
 254                         parserr($end, "}")
 255                 end--
 256                 if ($end != ";")
 257                         parserr($end, ";")
 258                 end--
 259                 if ($end != ")")
 260                         parserr($end, ")")
 261                 end--
 262
 263                 f++     #function return type
 264
 265                 funcname=$f
 266                 if (funcalias == "")
 267                         funcalias = funcname
 268                 if (argalias == "") {
 269                         argalias = funcname "_args"
 270                         if ($3 == "COMPAT")
 271                                 argalias = "o" argalias
 272                         if ($3 == "COMPAT4")
 273                                 argalias = "freebsd4_" argalias
 274                         if ($3 == "COMPAT6")
 275                                 argalias = "freebsd6_" argalias
 276                 }
 277                 f++
 278
 279                 if ($f != "(")
 280                         parserr($f, ")")
 281                 f++
 282
 283                 if (f == end) {
 284                         if ($f != "void")
 285                                 parserr($f, "argument definition")
 286                         return
 287                 }
 288
 289                 while (f <= end) {
 290                         argc++
 291                         argtype[argc]=""
 292                         oldf=""
 293                         while (f < end && $(f+1) != ",") {
 294                                 if (argtype[argc] != "" && oldf != "*")
 295                                         argtype[argc] = argtype[argc]" ";
 296                                 argtype[argc] = argtype[argc]$f;
 297                                 oldf = $f;
 298                                 f++
 299                         }
 300                         if (argtype[argc] == "")
 301                                 parserr($f, "argument definition")
 302                         argname[argc]=$f;
 303                         f += 2;                 # skip name, and any comma
 304                 }
 305                 if (argc != 0)
 306                         argssize = "AS(" argalias ")"
 307         }
 308         {       comment = $4
 309                 if (NF < 7)
 310                         for (i = 5; i <= NF; i++)
 311                                 comment = comment " " $i
 312         }
 313
 314         #
 315         # The AUE_ audit event identifier.
 316         #
 317         {
 318                 auditev = $2;
 319         }
 320
 321         $3 == "STD" || $3 == "NODEF" || $3 == "NOARGS"  || $3 == "NOPROTO" \
 322             || $3 == "NOIMPL" || $3 == "NOSTD" {
 323                 parseline()
 324                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
 325                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
 326                 if (argc > 0) {
 327                         printf("\t\tswitch(ndx) {\n") > systracetmp
 328                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
 329                         for (i = 1; i <= argc; i++) {
 330                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, argtype[i]) > systracetmp
 331                                 if (index(argtype[i], "*") > 0 || argtype[i] == "caddr_t" || argtype[i] == "l_handler_t")
 332                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
 333                                              i - 1, \
 334                                              argname[i], argtype[i]) > systrace
 335                                 else if (substr(argtype[i], 1, 1) == "u" || argtype[i] == "size_t")
 336                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
 337                                              i - 1, \
 338                                              argname[i], argtype[i]) > systrace
 339                                 else
 340                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
 341                                              i - 1, \
 342                                              argname[i], argtype[i]) > systrace
 343                         }
 344                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
 345                 }
 346                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
 347                 printf("\t\tbreak;\n") > systracetmp
 348                 if ((!nosys || funcname != "nosys") && \
 349                     (funcname != "lkmnosys") && (funcname != "lkmressys")) {
 350                         if (argc != 0 && $3 != "NOARGS" && $3 != "NOPROTO") {
 351                                 printf("struct %s {\n", argalias) > sysarg
 352                                 for (i = 1; i <= argc; i++)
 353                                         printf("\tchar %s_l_[PADL_(%s)]; " \
 354                                             "%s %s; char %s_r_[PADR_(%s)];\n",
 355                                             argname[i], argtype[i],
 356                                             argtype[i], argname[i],
 357                                             argname[i], argtype[i]) > sysarg
 358                                 printf("};\n") > sysarg
 359                         }
 360                         else if ($3 != "NOARGS" && $3 != "NOPROTO" && \
 361                             $3 != "NODEF")
 362                                 printf("struct %s {\n\tregister_t dummy;\n};\n",
 363                                     argalias) > sysarg
 364                 }
 365                 if (($3 != "NOPROTO" && $3 != "NODEF" && \
 366                     (funcname != "nosys" || !nosys)) || \
 367                     (funcname == "lkmnosys" && !lkmnosys) || \
 368                     funcname == "lkmressys") {
 369                         printf("%s\t%s(struct thread *, struct %s *)",
 370                             rettype, funcname, argalias) > sysdcl
 371                         printf(";\n") > sysdcl
 372                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
 373                             funcalias, auditev) > sysaue
 374                 }
 375                 if (funcname == "nosys")
 376                         nosys = 1
 377                 if (funcname == "lkmnosys")
 378                         lkmnosys = 1
 379                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 380                 column = 8 + 2 + length(argssize) + 15
 381                 if ($3 == "NOIMPL") {
 382                         printf("%s },", "nosys, AUE_NULL, NULL, 0, 0") > sysent
 383                         column = column + length("nosys") + 3
 384                 } else if ($3 == "NOSTD") {
 385                         printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0") > sysent
 386                         column = column + length("lkmressys") + 3
 387                 } else {
 388                         printf("%s, %s, NULL, 0, 0 },", funcname, auditev) > sysent
 389                         column = column + length(funcname) + length(auditev) + 3
 390                 }
 391                 align_sysent_comment(column)
 392                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 393                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 394                     funcalias, syscall, funcalias) > sysnames
 395                 if ($3 != "NODEF") {
 396                         printf("#define\t%s%s\t%d\n", syscallprefix,
 397                             funcalias, syscall) > syshdr
 398                         printf(" \\\n\t%s.o", funcalias) > sysmk
 399                 }
 400                 syscall++
 401                 next
 402         }
 403         $3 == "COMPAT" || $3 == "COMPAT4" || $3 == "COMPAT6" || $3 == "CPT_NOA" {
 404                 if ($3 == "COMPAT" || $3 == "CPT_NOA") {
 405                         ncompat++
 406                         out = syscompat
 407                         outdcl = syscompatdcl
 408                         wrap = "compat"
 409                         prefix = "o"
 410                 } else if ($3 == "COMPAT4") {
 411                         ncompat4++
 412                         out = syscompat4
 413                         outdcl = syscompat4dcl
 414                         wrap = "compat4"
 415                         prefix = "freebsd4_"
 416                 } else if ($3 == "COMPAT6") {
 417                         ncompat6++
 418                         out = syscompat6
 419                         outdcl = syscompat6dcl
 420                         wrap = "compat6"
 421                         prefix = "freebsd6_"
 422                 }
 423                 parseline()
 424                 if (argc != 0 && $3 != "CPT_NOA") {
 425                         printf("struct %s {\n", argalias) > out
 426                         for (i = 1; i <= argc; i++)
 427                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 428                                     "char %s_r_[PADR_(%s)];\n",
 429                                     argname[i], argtype[i],
 430                                     argtype[i], argname[i],
 431                                     argname[i], argtype[i]) > out
 432                         printf("};\n") > out
 433                 }
 434                 else if($3 != "CPT_NOA")
 435                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 436                             argalias) > sysarg
 437                 printf("%s\t%s%s(struct thread *, struct %s *);\n",
 438                     rettype, prefix, funcname, argalias) > outdcl
 439                 printf("\t{ %s(%s,%s), %s, NULL, 0, 0 },",
 440                     wrap, argssize, funcname, auditev) > sysent
 441                 align_sysent_comment(8 + 9 + \
 442                     length(argssize) + 1 + length(funcname) + length(auditev) + 4)
 443                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 444                 printf("\t\"%s.%s\",\t\t/* %d = old %s */\n",
 445                     wrap, funcalias, syscall, funcalias) > sysnames
 446                 if ($3 == "COMPAT" || $3 == "CPT_NOA") {
 447                         printf("\t\t\t\t/* %d is old %s */\n",
 448                             syscall, funcalias) > syshdr
 449                 } else {
 450                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
 451                             prefix, funcalias, syscall) > syshdr
 452                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
 453                 }
 454                 syscall++
 455                 next
 456         }
 457         $3 == "LIBCOMPAT" {
 458                 ncompat++
 459                 parseline()
 460                 printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
 461                 printf("\t{ compat(%s,%s), %s, NULL, 0, 0 },",
 462                     argssize, funcname, auditev) > sysent
 463                 align_sysent_comment(8 + 9 + \
 464                     length(argssize) + 1 + length(funcname) + length(auditev) + 4)
 465                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 466                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 467                     funcalias, syscall, funcalias) > sysnames
 468                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 469                     syscallprefix, funcalias, syscall) > syshdr
 470                 printf(" \\\n\t%s.o", funcalias) > sysmk
 471                 syscall++
 472                 next
 473         }
 474         $3 == "OBSOL" {
 475                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0 },") > sysent
 476                 align_sysent_comment(34)
 477                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 478                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 479                     $4, syscall, comment) > sysnames
 480                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 481                     syscall, comment) > syshdr
 482                 syscall++
 483                 next
 484         }
 485         $3 == "UNIMPL" {
 486                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0 },\t\t\t/* %d = %s */\n",
 487                     syscall, comment) > sysent
 488                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 489                     syscall, syscall, comment) > sysnames
 490                 syscall++
 491                 next
 492         }
 493         {
 494                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 495                 exit 1
 496         }
 497         END {
 498                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 499
 500                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0)
 501                         printf "#include \"opt_compat.h\"\n\n" > syssw
 502
 503                 if (ncompat != 0) {
 504                         printf "\n#ifdef %s\n", compat > sysinc
 505                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 506                         printf "#else\n" > sysinc
 507                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 508                         printf "#endif\n" > sysinc
 509                 }
 510
 511                 if (ncompat4 != 0) {
 512                         printf "\n#ifdef %s\n", compat4 > sysinc
 513                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 514                         printf "#else\n" > sysinc
 515                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 516                         printf "#endif\n" > sysinc
 517                 }
 518
 519                 if (ncompat6 != 0) {
 520                         printf "\n#ifdef %s\n", compat6 > sysinc
 521                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
 522                         printf "#else\n" > sysinc
 523                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 524                         printf "#endif\n" > sysinc
 525                 }
 526
 527                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 528                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 529                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
 530
 531                 printf("\n#undef PAD_\n") > sysprotoend
 532                 printf("#undef PADL_\n") > sysprotoend
 533                 printf("#undef PADR_\n") > sysprotoend
 534                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 535
 536                 printf("\n") > sysmk
 537                 printf("};\n") > sysent
 538                 printf("};\n") > sysnames
 539                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 540                     > syshdr
 541                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
 542                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
 543         } '
 544
 545 cat $sysinc $sysent >> $syssw
 546 cat $sysarg $sysdcl \
 547         $syscompat $syscompatdcl \
 548         $syscompat4 $syscompat4dcl \
 549         $syscompat6 $syscompat6dcl \
 550         $sysaue $sysprotoend > $sysproto
 551 cat $systracetmp >> $systrace
 552