The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kern/makesyscalls.sh

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
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    1 #! /bin/sh -
    2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
    3 # $FreeBSD$
    4 
    5 set -e
    6 
    7 # name of compat options:
    8 compat=COMPAT_43
    9 compat4=COMPAT_FREEBSD4
   10 compat6=COMPAT_FREEBSD6
   11 compat7=COMPAT_FREEBSD7
   12 
   13 # output files:
   14 sysnames="syscalls.c"
   15 sysproto="../sys/sysproto.h"
   16 sysproto_h=_SYS_SYSPROTO_H_
   17 syshdr="../sys/syscall.h"
   18 sysmk="../sys/syscall.mk"
   19 syssw="init_sysent.c"
   20 syscallprefix="SYS_"
   21 switchname="sysent"
   22 namesname="syscallnames"
   23 systrace="systrace_args.c"
   24 
   25 # tmp files:
   26 sysaue="sysent.aue.$$"
   27 sysdcl="sysent.dcl.$$"
   28 syscompat="sysent.compat.$$"
   29 syscompatdcl="sysent.compatdcl.$$"
   30 syscompat4="sysent.compat4.$$"
   31 syscompat4dcl="sysent.compat4dcl.$$"
   32 syscompat6="sysent.compat6.$$"
   33 syscompat6dcl="sysent.compat6dcl.$$"
   34 syscompat7="sysent.compat7.$$"
   35 syscompat7dcl="sysent.compat7dcl.$$"
   36 sysent="sysent.switch.$$"
   37 sysinc="sysinc.switch.$$"
   38 sysarg="sysarg.switch.$$"
   39 sysprotoend="sysprotoend.$$"
   40 systracetmp="systrace.$$"
   41 
   42 if [ -r capabilities.conf ]; then
   43         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
   44         capenabled=`echo $capenabled | sed 's/ /,/g'`
   45 else
   46         capenabled=""
   47 fi
   48 
   49 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp" 0
   50 
   51 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp
   52 
   53 case $# in
   54     0)  echo "usage: $0 input-file <config-file>" 1>&2
   55         exit 1
   56         ;;
   57 esac
   58 
   59 if [ -n "$2" -a -f "$2" ]; then
   60         . $2
   61 fi
   62 
   63 sed -e '
   64 s/\$//g
   65 :join
   66         /\\$/{a\
   67 
   68         N
   69         s/\\\n//
   70         b join
   71         }
   72 2,${
   73         /^#/!s/\([{}()*,]\)/ \1 /g
   74 }
   75 ' < $1 | awk "
   76         BEGIN {
   77                 sysaue = \"$sysaue\"
   78                 sysdcl = \"$sysdcl\"
   79                 sysproto = \"$sysproto\"
   80                 sysprotoend = \"$sysprotoend\"
   81                 sysproto_h = \"$sysproto_h\"
   82                 syscompat = \"$syscompat\"
   83                 syscompatdcl = \"$syscompatdcl\"
   84                 syscompat4 = \"$syscompat4\"
   85                 syscompat4dcl = \"$syscompat4dcl\"
   86                 syscompat6 = \"$syscompat6\"
   87                 syscompat6dcl = \"$syscompat6dcl\"
   88                 syscompat7 = \"$syscompat7\"
   89                 syscompat7dcl = \"$syscompat7dcl\"
   90                 sysent = \"$sysent\"
   91                 syssw = \"$syssw\"
   92                 sysinc = \"$sysinc\"
   93                 sysarg = \"$sysarg\"
   94                 sysnames = \"$sysnames\"
   95                 syshdr = \"$syshdr\"
   96                 sysmk = \"$sysmk\"
   97                 systrace = \"$systrace\"
   98                 systracetmp = \"$systracetmp\"
   99                 compat = \"$compat\"
  100                 compat4 = \"$compat4\"
  101                 compat6 = \"$compat6\"
  102                 compat7 = \"$compat7\"
  103                 syscallprefix = \"$syscallprefix\"
  104                 switchname = \"$switchname\"
  105                 namesname = \"$namesname\"
  106                 infile = \"$1\"
  107                 capenabled_string = \"$capenabled\"
  108                 "'
  109 
  110                 split(capenabled_string, capenabled, ",");
  111 
  112                 printf "/*\n * System call switch table.\n *\n" > syssw
  113                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  114                 printf " * $%s$\n", "FreeBSD" > syssw
  115 
  116                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  117                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  118                 printf " * $%s$\n", "FreeBSD" > sysarg
  119 
  120                 printf "\n#ifdef %s\n\n", compat > syscompat
  121                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
  122                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
  123                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
  124 
  125                 printf "/*\n * System call names.\n *\n" > sysnames
  126                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  127                 printf " * $%s$\n", "FreeBSD" > sysnames
  128 
  129                 printf "/*\n * System call numbers.\n *\n" > syshdr
  130                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
  131                 printf " * $%s$\n", "FreeBSD" > syshdr
  132                 printf "# FreeBSD system call names.\n" > sysmk
  133                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
  134                 printf "# $%s$\n", "FreeBSD" > sysmk
  135 
  136                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
  137                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
  138                 printf " * $%s$\n", "FreeBSD" > systrace
  139         }
  140         NR == 1 {
  141                 gsub("[$]FreeBSD: ", "", $0)
  142                 gsub(" [$]", "", $0)
  143 
  144                 printf " * created from%s\n */\n\n", $0 > syssw
  145 
  146                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
  147                 printf "struct sysent %s[] = {\n",switchname > sysent
  148 
  149                 printf " * created from%s\n */\n\n", $0 > sysarg
  150                 printf "#ifndef %s\n", sysproto_h > sysarg
  151                 printf "#define\t%s\n\n", sysproto_h > sysarg
  152                 printf "#include <sys/signal.h>\n" > sysarg
  153                 printf "#include <sys/acl.h>\n" > sysarg
  154                 printf "#include <sys/cpuset.h>\n" > sysarg
  155                 printf "#include <sys/_semaphore.h>\n" > sysarg
  156                 printf "#include <sys/ucontext.h>\n" > sysarg
  157                 printf "#include <sys/wait.h>\n\n" > sysarg
  158                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
  159                 printf "struct proc;\n\n" > sysarg
  160                 printf "struct thread;\n\n" > sysarg
  161                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
  162                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
  163                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
  164                 printf "#define\tPADL_(t)\t0\n" > sysarg
  165                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
  166                 printf "#else\n" > sysarg
  167                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
  168                 printf "#define\tPADR_(t)\t0\n" > sysarg
  169                 printf "#endif\n\n" > sysarg
  170 
  171                 printf " * created from%s\n */\n\n", $0 > sysnames
  172                 printf "const char *%s[] = {\n", namesname > sysnames
  173 
  174                 printf " * created from%s\n */\n\n", $0 > syshdr
  175 
  176                 printf "# created from%s\nMIASM = ", $0 > sysmk
  177 
  178                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
  179                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
  180                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
  181                 printf "\tswitch (sysnum) {\n" > systrace
  182 
  183                 printf "static void\nsystrace_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
  184                 printf "\tswitch (sysnum) {\n" > systracetmp
  185 
  186                 next
  187         }
  188         NF == 0 || $1 ~ /^;/ {
  189                 next
  190         }
  191         $1 ~ /^#[       ]*include/ {
  192                 print > sysinc
  193                 next
  194         }
  195         $1 ~ /^#[       ]*if/ {
  196                 print > sysent
  197                 print > sysdcl
  198                 print > sysarg
  199                 print > syscompat
  200                 print > syscompat4
  201                 print > syscompat6
  202                 print > syscompat7
  203                 print > sysnames
  204                 print > systrace
  205                 print > systracetmp
  206                 savesyscall = syscall
  207                 next
  208         }
  209         $1 ~ /^#[       ]*else/ {
  210                 print > sysent
  211                 print > sysdcl
  212                 print > sysarg
  213                 print > syscompat
  214                 print > syscompat4
  215                 print > syscompat6
  216                 print > syscompat7
  217                 print > sysnames
  218                 print > systrace
  219                 print > systracetmp
  220                 syscall = savesyscall
  221                 next
  222         }
  223         $1 ~ /^#/ {
  224                 print > sysent
  225                 print > sysdcl
  226                 print > sysarg
  227                 print > syscompat
  228                 print > syscompat4
  229                 print > syscompat6
  230                 print > syscompat7
  231                 print > sysnames
  232                 print > systrace
  233                 print > systracetmp
  234                 next
  235         }
  236         syscall != $1 {
  237                 printf "%s: line %d: syscall number out of sync at %d\n",
  238                     infile, NR, syscall
  239                 printf "line is:\n"
  240                 print
  241                 exit 1
  242         }
  243         # Returns true if the type "name" is the first flag in the type field
  244         function type(name, flags, n) {
  245                 n = split($3, flags, /\|/)
  246                 return (n > 0 && flags[1] == name)
  247         }
  248         # Returns true if the flag "name" is set in the type field
  249         function flag(name, flags, i, n) {
  250                 n = split($3, flags, /\|/)
  251                 for (i = 1; i <= n; i++)
  252                         if (flags[i] == name)
  253                                 return 1
  254                 return 0
  255         }
  256         function align_sysent_comment(column) {
  257                 printf("\t") > sysent
  258                 column = column + 8 - column % 8
  259                 while (column < 56) {
  260                         printf("\t") > sysent
  261                         column = column + 8
  262                 }
  263         }
  264         function parserr(was, wanted) {
  265                 printf "%s: line %d: unexpected %s (expected %s)\n",
  266                     infile, NR, was, wanted
  267                 exit 1
  268         }
  269         function parseline() {
  270                 f=4                     # toss number, type, audit event
  271                 argc= 0;
  272                 argssize = "0"
  273                 thr_flag = "SY_THR_STATIC"
  274                 if (flag("NOTSTATIC")) {
  275                         thr_flag = "SY_THR_ABSENT"
  276                 }
  277                 if ($NF != "}") {
  278                         funcalias=$(NF-2)
  279                         argalias=$(NF-1)
  280                         rettype=$NF
  281                         end=NF-3
  282                 } else {
  283                         funcalias=""
  284                         argalias=""
  285                         rettype="int"
  286                         end=NF
  287                 }
  288                 if (flag("NODEF")) {
  289                         auditev="AUE_NULL"
  290                         funcname=$4
  291                         argssize = "AS(" $6 ")"
  292                         return
  293                 }
  294                 if ($f != "{")
  295                         parserr($f, "{")
  296                 f++
  297                 if ($end != "}")
  298                         parserr($end, "}")
  299                 end--
  300                 if ($end != ";")
  301                         parserr($end, ";")
  302                 end--
  303                 if ($end != ")")
  304                         parserr($end, ")")
  305                 end--
  306 
  307                 f++     #function return type
  308 
  309                 funcname=$f
  310 
  311                 #
  312                 # We now know the func name, so define a flags field for it.
  313                 # Do this before any other processing as we may return early
  314                 # from it.
  315                 #
  316                 for (cap in capenabled) {
  317                         if (funcname == capenabled[cap]) {
  318                                 flags = "SYF_CAPENABLED";
  319                         }
  320                 }
  321 
  322                 if (funcalias == "")
  323                         funcalias = funcname
  324                 if (argalias == "") {
  325                         argalias = funcname "_args"
  326                         if (flag("COMPAT"))
  327                                 argalias = "o" argalias
  328                         if (flag("COMPAT4"))
  329                                 argalias = "freebsd4_" argalias
  330                         if (flag("COMPAT6"))
  331                                 argalias = "freebsd6_" argalias
  332                         if (flag("COMPAT7"))
  333                                 argalias = "freebsd7_" argalias
  334                 }
  335                 f++
  336 
  337                 if ($f != "(")
  338                         parserr($f, ")")
  339                 f++
  340 
  341                 if (f == end) {
  342                         if ($f != "void")
  343                                 parserr($f, "argument definition")
  344                         return
  345                 }
  346 
  347                 while (f <= end) {
  348                         argc++
  349                         argtype[argc]=""
  350                         oldf=""
  351                         while (f < end && $(f+1) != ",") {
  352                                 if (argtype[argc] != "" && oldf != "*")
  353                                         argtype[argc] = argtype[argc]" ";
  354                                 argtype[argc] = argtype[argc]$f;
  355                                 oldf = $f;
  356                                 f++
  357                         }
  358                         if (argtype[argc] == "")
  359                                 parserr($f, "argument definition")
  360                         argname[argc]=$f;
  361                         f += 2;                 # skip name, and any comma
  362                 }
  363                 if (argc != 0)
  364                         argssize = "AS(" argalias ")"
  365         }
  366         {       comment = $4
  367                 if (NF < 7)
  368                         for (i = 5; i <= NF; i++)
  369                                 comment = comment " " $i
  370         }
  371 
  372         #
  373         # The AUE_ audit event identifier.
  374         #
  375         {
  376                 auditev = $2;
  377         }
  378 
  379         #
  380         # The flags, if any.
  381         #
  382         {
  383                 flags = "0";
  384         }
  385 
  386         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
  387             || type("NOSTD") {
  388                 parseline()
  389                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
  390                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
  391                 if (argc > 0) {
  392                         printf("\t\tswitch(ndx) {\n") > systracetmp
  393                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
  394                         for (i = 1; i <= argc; i++) {
  395                                 arg = argtype[i]
  396                                 sub("__restrict$", "", arg)
  397                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
  398                                 if (index(arg, "*") > 0 || arg == "caddr_t")
  399                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
  400                                              i - 1, \
  401                                              argname[i], arg) > systrace
  402                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
  403                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
  404                                              i - 1, \
  405                                              argname[i], arg) > systrace
  406                                 else
  407                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
  408                                              i - 1, \
  409                                              argname[i], arg) > systrace
  410                         }
  411                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
  412                 }
  413                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
  414                 printf("\t\tbreak;\n") > systracetmp
  415                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  416                     !flag("NODEF")) {
  417                         printf("struct %s {\n", argalias) > sysarg
  418                         for (i = 1; i <= argc; i++)
  419                                 printf("\tchar %s_l_[PADL_(%s)]; " \
  420                                     "%s %s; char %s_r_[PADR_(%s)];\n",
  421                                     argname[i], argtype[i],
  422                                     argtype[i], argname[i],
  423                                     argname[i], argtype[i]) > sysarg
  424                         printf("};\n") > sysarg
  425                 }
  426                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  427                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  428                             argalias) > sysarg
  429                 if (!flag("NOPROTO") && !flag("NODEF")) {
  430                         if (funcname == "nosys" || funcname == "lkmnosys" ||
  431                             funcname == "sysarch" || funcname ~ /^freebsd/ || 
  432                             funcname ~ /^linux/ || funcname ~ /^svr4/ || 
  433                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {                               
  434                                 printf("%s\t%s(struct thread *, struct %s *)",
  435                                     rettype, funcname, argalias) > sysdcl
  436                         } else {
  437                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
  438                                     rettype, funcname, argalias) > sysdcl
  439                         } 
  440                         printf(";\n") > sysdcl
  441                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
  442                             funcalias, auditev) > sysaue
  443                 }
  444                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
  445                 column = 8 + 2 + length(argssize) + 15
  446                 if (flag("NOSTD")) {
  447                         printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
  448                         column = column + length("lkmressys") + length("AUE_NULL") + 3
  449                 } else {
  450                         if (funcname == "nosys" || funcname == "sysarch" || 
  451                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
  452                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
  453                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
  454                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  455                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 
  456                         } else {
  457                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  458                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
  459                         } 
  460                 } 
  461                 align_sysent_comment(column)
  462                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
  463                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
  464                     funcalias, syscall, funcalias) > sysnames
  465                 if (!flag("NODEF")) {
  466                         printf("#define\t%s%s\t%d\n", syscallprefix,
  467                             funcalias, syscall) > syshdr
  468                         printf(" \\\n\t%s.o", funcalias) > sysmk
  469                 }
  470                 syscall++
  471                 next
  472         }
  473         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
  474             type("COMPAT7") {
  475                 if (flag("COMPAT")) {
  476                         ncompat++
  477                         out = syscompat
  478                         outdcl = syscompatdcl
  479                         wrap = "compat"
  480                         prefix = "o"
  481                         descr = "old"
  482                 } else if (flag("COMPAT4")) {
  483                         ncompat4++
  484                         out = syscompat4
  485                         outdcl = syscompat4dcl
  486                         wrap = "compat4"
  487                         prefix = "freebsd4_"
  488                         descr = "freebsd4"
  489                 } else if (flag("COMPAT6")) {
  490                         ncompat6++
  491                         out = syscompat6
  492                         outdcl = syscompat6dcl
  493                         wrap = "compat6"
  494                         prefix = "freebsd6_"
  495                         descr = "freebsd6"
  496                 } else if (flag("COMPAT7")) {
  497                         ncompat7++
  498                         out = syscompat7
  499                         outdcl = syscompat7dcl
  500                         wrap = "compat7"
  501                         prefix = "freebsd7_"
  502                         descr = "freebsd7"
  503                 }
  504                 parseline()
  505                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  506                     !flag("NODEF")) {
  507                         printf("struct %s {\n", argalias) > out
  508                         for (i = 1; i <= argc; i++)
  509                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
  510                                     "char %s_r_[PADR_(%s)];\n",
  511                                     argname[i], argtype[i],
  512                                     argtype[i], argname[i],
  513                                     argname[i], argtype[i]) > out
  514                         printf("};\n") > out
  515                 }
  516                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  517                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  518                             argalias) > sysarg
  519                 if (!flag("NOPROTO") && !flag("NODEF")) {
  520                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
  521                             rettype, prefix, funcname, argalias) > outdcl
  522                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
  523                             prefix, funcname, auditev) > sysaue
  524                 }
  525                 if (flag("NOSTD")) {
  526                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
  527                             "0", "lkmressys", "AUE_NULL") > sysent
  528                         align_sysent_comment(8 + 2 + length("0") + 15 + \
  529                             length("lkmressys") + length("AUE_NULL") + 3)
  530                 } else {
  531                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
  532                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
  533                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
  534                             length(funcname) + length(auditev) + \
  535                             length(flags) + 4)
  536                 }
  537                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
  538                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
  539                     wrap, funcalias, syscall, descr, funcalias) > sysnames
  540                 if (flag("COMPAT")) {
  541                         printf("\t\t\t\t/* %d is old %s */\n",
  542                             syscall, funcalias) > syshdr
  543                 } else if (!flag("NODEF")) {
  544                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
  545                             prefix, funcalias, syscall) > syshdr
  546                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
  547                 }
  548                 syscall++
  549                 next
  550         }
  551         type("OBSOL") {
  552                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
  553                 align_sysent_comment(34)
  554                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
  555                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
  556                     $4, syscall, comment) > sysnames
  557                 printf("\t\t\t\t/* %d is obsolete %s */\n",
  558                     syscall, comment) > syshdr
  559                 syscall++
  560                 next
  561         }
  562         type("UNIMPL") {
  563                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
  564                     syscall, comment) > sysent
  565                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
  566                     syscall, syscall, comment) > sysnames
  567                 syscall++
  568                 next
  569         }
  570         {
  571                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
  572                 exit 1
  573         }
  574         END {
  575                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
  576 
  577                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
  578                         printf "#include \"opt_compat.h\"\n\n" > syssw
  579 
  580                 if (ncompat != 0) {
  581                         printf "\n#ifdef %s\n", compat > sysinc
  582                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
  583                         printf "#else\n" > sysinc
  584                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  585                         printf "#endif\n" > sysinc
  586                 }
  587 
  588                 if (ncompat4 != 0) {
  589                         printf "\n#ifdef %s\n", compat4 > sysinc
  590                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
  591                         printf "#else\n" > sysinc
  592                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  593                         printf "#endif\n" > sysinc
  594                 }
  595 
  596                 if (ncompat6 != 0) {
  597                         printf "\n#ifdef %s\n", compat6 > sysinc
  598                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
  599                         printf "#else\n" > sysinc
  600                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  601                         printf "#endif\n" > sysinc
  602                 }
  603 
  604                 if (ncompat7 != 0) {
  605                         printf "\n#ifdef %s\n", compat7 > sysinc
  606                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
  607                         printf "#else\n" > sysinc
  608                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  609                         printf "#endif\n" > sysinc
  610                 }
  611 
  612                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
  613                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
  614                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
  615                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
  616 
  617                 printf("\n#undef PAD_\n") > sysprotoend
  618                 printf("#undef PADL_\n") > sysprotoend
  619                 printf("#undef PADR_\n") > sysprotoend
  620                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
  621 
  622                 printf("\n") > sysmk
  623                 printf("};\n") > sysent
  624                 printf("};\n") > sysnames
  625                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
  626                     > syshdr
  627                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
  628                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
  629         } '
  630 
  631 cat $sysinc $sysent >> $syssw
  632 cat $sysarg $sysdcl \
  633         $syscompat $syscompatdcl \
  634         $syscompat4 $syscompat4dcl \
  635         $syscompat6 $syscompat6dcl \
  636         $syscompat7 $syscompat7dcl \
  637         $sysaue $sysprotoend > $sysproto
  638 cat $systracetmp >> $systrace
  639 

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