makesyscalls.sh

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    1 #! /bin/sh -
    2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
    3 # $FreeBSD: releng/10.1/sys/kern/makesyscalls.sh 255777 2013-09-21 23:05:44Z markj $
    4 
    5 set -e
    6 
    7 # name of compat options:
    8 compat=COMPAT_43
    9 compat4=COMPAT_FREEBSD4
   10 compat6=COMPAT_FREEBSD6
   11 compat7=COMPAT_FREEBSD7
   12 
   13 # output files:
   14 sysnames="syscalls.c"
   15 sysproto="../sys/sysproto.h"
   16 sysproto_h=_SYS_SYSPROTO_H_
   17 syshdr="../sys/syscall.h"
   18 sysmk="../sys/syscall.mk"
   19 syssw="init_sysent.c"
   20 syscallprefix="SYS_"
   21 switchname="sysent"
   22 namesname="syscallnames"
   23 systrace="systrace_args.c"
   24 
   25 # tmp files:
   26 sysaue="sysent.aue.$$"
   27 sysdcl="sysent.dcl.$$"
   28 syscompat="sysent.compat.$$"
   29 syscompatdcl="sysent.compatdcl.$$"
   30 syscompat4="sysent.compat4.$$"
   31 syscompat4dcl="sysent.compat4dcl.$$"
   32 syscompat6="sysent.compat6.$$"
   33 syscompat6dcl="sysent.compat6dcl.$$"
   34 syscompat7="sysent.compat7.$$"
   35 syscompat7dcl="sysent.compat7dcl.$$"
   36 sysent="sysent.switch.$$"
   37 sysinc="sysinc.switch.$$"
   38 sysarg="sysarg.switch.$$"
   39 sysprotoend="sysprotoend.$$"
   40 systracetmp="systrace.$$"
   41 systraceret="systraceret.$$"
   42 
   43 if [ -r capabilities.conf ]; then
   44         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
   45         capenabled=`echo $capenabled | sed 's/ /,/g'`
   46 else
   47         capenabled=""
   48 fi
   49 
   50 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
   51 
   52 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
   53 
   54 case $# in
   55     0)  echo "usage: $0 input-file <config-file>" 1>&2
   56         exit 1
   57         ;;
   58 esac
   59 
   60 if [ -n "$2" -a -f "$2" ]; then
   61         . $2
   62 fi
   63 
   64 sed -e '
   65 s/\$//g
   66 :join
   67         /\\$/{a\
   68 
   69         N
   70         s/\\\n//
   71         b join
   72         }
   73 2,${
   74         /^#/!s/\([{}()*,]\)/ \1 /g
   75 }
   76 ' < $1 | awk "
   77         BEGIN {
   78                 sysaue = \"$sysaue\"
   79                 sysdcl = \"$sysdcl\"
   80                 sysproto = \"$sysproto\"
   81                 sysprotoend = \"$sysprotoend\"
   82                 sysproto_h = \"$sysproto_h\"
   83                 syscompat = \"$syscompat\"
   84                 syscompatdcl = \"$syscompatdcl\"
   85                 syscompat4 = \"$syscompat4\"
   86                 syscompat4dcl = \"$syscompat4dcl\"
   87                 syscompat6 = \"$syscompat6\"
   88                 syscompat6dcl = \"$syscompat6dcl\"
   89                 syscompat7 = \"$syscompat7\"
   90                 syscompat7dcl = \"$syscompat7dcl\"
   91                 sysent = \"$sysent\"
   92                 syssw = \"$syssw\"
   93                 sysinc = \"$sysinc\"
   94                 sysarg = \"$sysarg\"
   95                 sysnames = \"$sysnames\"
   96                 syshdr = \"$syshdr\"
   97                 sysmk = \"$sysmk\"
   98                 systrace = \"$systrace\"
   99                 systracetmp = \"$systracetmp\"
  100                 systraceret = \"$systraceret\"
  101                 compat = \"$compat\"
  102                 compat4 = \"$compat4\"
  103                 compat6 = \"$compat6\"
  104                 compat7 = \"$compat7\"
  105                 syscallprefix = \"$syscallprefix\"
  106                 switchname = \"$switchname\"
  107                 namesname = \"$namesname\"
  108                 infile = \"$1\"
  109                 capenabled_string = \"$capenabled\"
  110                 "'
  111 
  112                 split(capenabled_string, capenabled, ",");
  113 
  114                 printf "/*\n * System call switch table.\n *\n" > syssw
  115                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  116                 printf " * $%s$\n", "FreeBSD" > syssw
  117 
  118                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  119                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  120                 printf " * $%s$\n", "FreeBSD" > sysarg
  121 
  122                 printf "\n#ifdef %s\n\n", compat > syscompat
  123                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
  124                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
  125                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
  126 
  127                 printf "/*\n * System call names.\n *\n" > sysnames
  128                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  129                 printf " * $%s$\n", "FreeBSD" > sysnames
  130 
  131                 printf "/*\n * System call numbers.\n *\n" > syshdr
  132                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
  133                 printf " * $%s$\n", "FreeBSD" > syshdr
  134                 printf "# FreeBSD system call names.\n" > sysmk
  135                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
  136                 printf "# $%s$\n", "FreeBSD" > sysmk
  137 
  138                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
  139                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
  140                 printf " * $%s$\n", "FreeBSD" > systrace
  141         }
  142         NR == 1 {
  143                 gsub("[$]FreeBSD: ", "", $0)
  144                 gsub(" [$]", "", $0)
  145 
  146                 printf " * created from%s\n */\n\n", $0 > syssw
  147 
  148                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
  149                 printf "struct sysent %s[] = {\n",switchname > sysent
  150 
  151                 printf " * created from%s\n */\n\n", $0 > sysarg
  152                 printf "#ifndef %s\n", sysproto_h > sysarg
  153                 printf "#define\t%s\n\n", sysproto_h > sysarg
  154                 printf "#include <sys/signal.h>\n" > sysarg
  155                 printf "#include <sys/acl.h>\n" > sysarg
  156                 printf "#include <sys/cpuset.h>\n" > sysarg
  157                 printf "#include <sys/_ffcounter.h>\n" > sysarg
  158                 printf "#include <sys/_semaphore.h>\n" > sysarg
  159                 printf "#include <sys/ucontext.h>\n" > sysarg
  160                 printf "#include <sys/wait.h>\n\n" > sysarg
  161                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
  162                 printf "struct proc;\n\n" > sysarg
  163                 printf "struct thread;\n\n" > sysarg
  164                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
  165                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
  166                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
  167                 printf "#define\tPADL_(t)\t0\n" > sysarg
  168                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
  169                 printf "#else\n" > sysarg
  170                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
  171                 printf "#define\tPADR_(t)\t0\n" > sysarg
  172                 printf "#endif\n\n" > sysarg
  173 
  174                 printf " * created from%s\n */\n\n", $0 > sysnames
  175                 printf "const char *%s[] = {\n", namesname > sysnames
  176 
  177                 printf " * created from%s\n */\n\n", $0 > syshdr
  178 
  179                 printf "# created from%s\nMIASM = ", $0 > sysmk
  180 
  181                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
  182                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
  183                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
  184                 printf "\tswitch (sysnum) {\n" > systrace
  185 
  186                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
  187                 printf "\tswitch (sysnum) {\n" > systracetmp
  188 
  189                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
  190                 printf "\tswitch (sysnum) {\n" > systraceret
  191 
  192                 next
  193         }
  194         NF == 0 || $1 ~ /^;/ {
  195                 next
  196         }
  197         $1 ~ /^#[       ]*include/ {
  198                 print > sysinc
  199                 next
  200         }
  201         $1 ~ /^#[       ]*if/ {
  202                 print > sysent
  203                 print > sysdcl
  204                 print > sysarg
  205                 print > syscompat
  206                 print > syscompat4
  207                 print > syscompat6
  208                 print > syscompat7
  209                 print > sysnames
  210                 print > systrace
  211                 print > systracetmp
  212                 print > systraceret
  213                 savesyscall = syscall
  214                 next
  215         }
  216         $1 ~ /^#[       ]*else/ {
  217                 print > sysent
  218                 print > sysdcl
  219                 print > sysarg
  220                 print > syscompat
  221                 print > syscompat4
  222                 print > syscompat6
  223                 print > syscompat7
  224                 print > sysnames
  225                 print > systrace
  226                 print > systracetmp
  227                 print > systraceret
  228                 syscall = savesyscall
  229                 next
  230         }
  231         $1 ~ /^#/ {
  232                 print > sysent
  233                 print > sysdcl
  234                 print > sysarg
  235                 print > syscompat
  236                 print > syscompat4
  237                 print > syscompat6
  238                 print > syscompat7
  239                 print > sysnames
  240                 print > systrace
  241                 print > systracetmp
  242                 print > systraceret
  243                 next
  244         }
  245         syscall != $1 {
  246                 printf "%s: line %d: syscall number out of sync at %d\n",
  247                     infile, NR, syscall
  248                 printf "line is:\n"
  249                 print
  250                 exit 1
  251         }
  252         # Returns true if the type "name" is the first flag in the type field
  253         function type(name, flags, n) {
  254                 n = split($3, flags, /\|/)
  255                 return (n > 0 && flags[1] == name)
  256         }
  257         # Returns true if the flag "name" is set in the type field
  258         function flag(name, flags, i, n) {
  259                 n = split($3, flags, /\|/)
  260                 for (i = 1; i <= n; i++)
  261                         if (flags[i] == name)
  262                                 return 1
  263                 return 0
  264         }
  265         function align_sysent_comment(column) {
  266                 printf("\t") > sysent
  267                 column = column + 8 - column % 8
  268                 while (column < 56) {
  269                         printf("\t") > sysent
  270                         column = column + 8
  271                 }
  272         }
  273         function parserr(was, wanted) {
  274                 printf "%s: line %d: unexpected %s (expected %s)\n",
  275                     infile, NR, was, wanted
  276                 exit 1
  277         }
  278         function parseline() {
  279                 f=4                     # toss number, type, audit event
  280                 argc= 0;
  281                 argssize = "0"
  282                 thr_flag = "SY_THR_STATIC"
  283                 if (flag("NOTSTATIC")) {
  284                         thr_flag = "SY_THR_ABSENT"
  285                 }
  286                 if ($NF != "}") {
  287                         funcalias=$(NF-2)
  288                         argalias=$(NF-1)
  289                         rettype=$NF
  290                         end=NF-3
  291                 } else {
  292                         funcalias=""
  293                         argalias=""
  294                         rettype="int"
  295                         end=NF
  296                 }
  297                 if (flag("NODEF")) {
  298                         auditev="AUE_NULL"
  299                         funcname=$4
  300                         argssize = "AS(" $6 ")"
  301                         return
  302                 }
  303                 if ($f != "{")
  304                         parserr($f, "{")
  305                 f++
  306                 if ($end != "}")
  307                         parserr($end, "}")
  308                 end--
  309                 if ($end != ";")
  310                         parserr($end, ";")
  311                 end--
  312                 if ($end != ")")
  313                         parserr($end, ")")
  314                 end--
  315 
  316                 syscallret=$f
  317                 f++
  318 
  319                 funcname=$f
  320 
  321                 #
  322                 # We now know the func name, so define a flags field for it.
  323                 # Do this before any other processing as we may return early
  324                 # from it.
  325                 #
  326                 for (cap in capenabled) {
  327                         if (funcname == capenabled[cap]) {
  328                                 flags = "SYF_CAPENABLED";
  329                         }
  330                 }
  331 
  332                 if (funcalias == "")
  333                         funcalias = funcname
  334                 if (argalias == "") {
  335                         argalias = funcname "_args"
  336                         if (flag("COMPAT"))
  337                                 argalias = "o" argalias
  338                         if (flag("COMPAT4"))
  339                                 argalias = "freebsd4_" argalias
  340                         if (flag("COMPAT6"))
  341                                 argalias = "freebsd6_" argalias
  342                         if (flag("COMPAT7"))
  343                                 argalias = "freebsd7_" argalias
  344                 }
  345                 f++
  346 
  347                 if ($f != "(")
  348                         parserr($f, ")")
  349                 f++
  350 
  351                 if (f == end) {
  352                         if ($f != "void")
  353                                 parserr($f, "argument definition")
  354                         return
  355                 }
  356 
  357                 while (f <= end) {
  358                         argc++
  359                         argtype[argc]=""
  360                         oldf=""
  361                         while (f < end && $(f+1) != ",") {
  362                                 if (argtype[argc] != "" && oldf != "*")
  363                                         argtype[argc] = argtype[argc]" ";
  364                                 argtype[argc] = argtype[argc]$f;
  365                                 oldf = $f;
  366                                 f++
  367                         }
  368                         if (argtype[argc] == "")
  369                                 parserr($f, "argument definition")
  370                         argname[argc]=$f;
  371                         f += 2;                 # skip name, and any comma
  372                 }
  373                 if (argc != 0)
  374                         argssize = "AS(" argalias ")"
  375         }
  376         {       comment = $4
  377                 if (NF < 7)
  378                         for (i = 5; i <= NF; i++)
  379                                 comment = comment " " $i
  380         }
  381 
  382         #
  383         # The AUE_ audit event identifier.
  384         #
  385         {
  386                 auditev = $2;
  387         }
  388 
  389         #
  390         # The flags, if any.
  391         #
  392         {
  393                 flags = "0";
  394         }
  395 
  396         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
  397             || type("NOSTD") {
  398                 parseline()
  399                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
  400                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
  401                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
  402                 if (argc > 0) {
  403                         printf("\t\tswitch(ndx) {\n") > systracetmp
  404                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
  405                         for (i = 1; i <= argc; i++) {
  406                                 arg = argtype[i]
  407                                 sub("__restrict$", "", arg)
  408                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
  409                                 if (index(arg, "*") > 0 || arg == "caddr_t")
  410                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
  411                                              i - 1, \
  412                                              argname[i], arg) > systrace
  413                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
  414                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
  415                                              i - 1, \
  416                                              argname[i], arg) > systrace
  417                                 else
  418                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
  419                                              i - 1, \
  420                                              argname[i], arg) > systrace
  421                         }
  422                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
  423 
  424                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
  425                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
  426                         printf("\t\tbreak;\n") > systraceret
  427                 }
  428                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
  429                 printf("\t\tbreak;\n") > systracetmp
  430                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  431                     !flag("NODEF")) {
  432                         printf("struct %s {\n", argalias) > sysarg
  433                         for (i = 1; i <= argc; i++)
  434                                 printf("\tchar %s_l_[PADL_(%s)]; " \
  435                                     "%s %s; char %s_r_[PADR_(%s)];\n",
  436                                     argname[i], argtype[i],
  437                                     argtype[i], argname[i],
  438                                     argname[i], argtype[i]) > sysarg
  439                         printf("};\n") > sysarg
  440                 }
  441                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  442                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  443                             argalias) > sysarg
  444                 if (!flag("NOPROTO") && !flag("NODEF")) {
  445                         if (funcname == "nosys" || funcname == "lkmnosys" ||
  446                             funcname == "sysarch" || funcname ~ /^freebsd/ || 
  447                             funcname ~ /^linux/ || funcname ~ /^svr4/ || 
  448                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {                               
  449                                 printf("%s\t%s(struct thread *, struct %s *)",
  450                                     rettype, funcname, argalias) > sysdcl
  451                         } else {
  452                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
  453                                     rettype, funcname, argalias) > sysdcl
  454                         } 
  455                         printf(";\n") > sysdcl
  456                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
  457                             funcalias, auditev) > sysaue
  458                 }
  459                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
  460                 column = 8 + 2 + length(argssize) + 15
  461                 if (flag("NOSTD")) {
  462                         printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
  463                         column = column + length("lkmressys") + length("AUE_NULL") + 3
  464                 } else {
  465                         if (funcname == "nosys" || funcname == "sysarch" || 
  466                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
  467                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
  468                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
  469                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  470                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 
  471                         } else {
  472                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  473                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
  474                         } 
  475                 } 
  476                 align_sysent_comment(column)
  477                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
  478                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
  479                     funcalias, syscall, funcalias) > sysnames
  480                 if (!flag("NODEF")) {
  481                         printf("#define\t%s%s\t%d\n", syscallprefix,
  482                             funcalias, syscall) > syshdr
  483                         printf(" \\\n\t%s.o", funcalias) > sysmk
  484                 }
  485                 syscall++
  486                 next
  487         }
  488         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
  489             type("COMPAT7") {
  490                 if (flag("COMPAT")) {
  491                         ncompat++
  492                         out = syscompat
  493                         outdcl = syscompatdcl
  494                         wrap = "compat"
  495                         prefix = "o"
  496                         descr = "old"
  497                 } else if (flag("COMPAT4")) {
  498                         ncompat4++
  499                         out = syscompat4
  500                         outdcl = syscompat4dcl
  501                         wrap = "compat4"
  502                         prefix = "freebsd4_"
  503                         descr = "freebsd4"
  504                 } else if (flag("COMPAT6")) {
  505                         ncompat6++
  506                         out = syscompat6
  507                         outdcl = syscompat6dcl
  508                         wrap = "compat6"
  509                         prefix = "freebsd6_"
  510                         descr = "freebsd6"
  511                 } else if (flag("COMPAT7")) {
  512                         ncompat7++
  513                         out = syscompat7
  514                         outdcl = syscompat7dcl
  515                         wrap = "compat7"
  516                         prefix = "freebsd7_"
  517                         descr = "freebsd7"
  518                 }
  519                 parseline()
  520                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  521                     !flag("NODEF")) {
  522                         printf("struct %s {\n", argalias) > out
  523                         for (i = 1; i <= argc; i++)
  524                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
  525                                     "char %s_r_[PADR_(%s)];\n",
  526                                     argname[i], argtype[i],
  527                                     argtype[i], argname[i],
  528                                     argname[i], argtype[i]) > out
  529                         printf("};\n") > out
  530                 }
  531                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  532                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  533                             argalias) > sysarg
  534                 if (!flag("NOPROTO") && !flag("NODEF")) {
  535                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
  536                             rettype, prefix, funcname, argalias) > outdcl
  537                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
  538                             prefix, funcname, auditev) > sysaue
  539                 }
  540                 if (flag("NOSTD")) {
  541                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
  542                             "0", "lkmressys", "AUE_NULL") > sysent
  543                         align_sysent_comment(8 + 2 + length("0") + 15 + \
  544                             length("lkmressys") + length("AUE_NULL") + 3)
  545                 } else {
  546                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
  547                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
  548                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
  549                             length(funcname) + length(auditev) + \
  550                             length(flags) + 4)
  551                 }
  552                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
  553                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
  554                     wrap, funcalias, syscall, descr, funcalias) > sysnames
  555                 if (flag("COMPAT")) {
  556                         printf("\t\t\t\t/* %d is old %s */\n",
  557                             syscall, funcalias) > syshdr
  558                 } else if (!flag("NODEF")) {
  559                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
  560                             prefix, funcalias, syscall) > syshdr
  561                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
  562                 }
  563                 syscall++
  564                 next
  565         }
  566         type("OBSOL") {
  567                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
  568                 align_sysent_comment(34)
  569                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
  570                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
  571                     $4, syscall, comment) > sysnames
  572                 printf("\t\t\t\t/* %d is obsolete %s */\n",
  573                     syscall, comment) > syshdr
  574                 syscall++
  575                 next
  576         }
  577         type("UNIMPL") {
  578                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
  579                     syscall, comment) > sysent
  580                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
  581                     syscall, syscall, comment) > sysnames
  582                 syscall++
  583                 next
  584         }
  585         {
  586                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
  587                 exit 1
  588         }
  589         END {
  590                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
  591 
  592                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
  593                         printf "#include \"opt_compat.h\"\n\n" > syssw
  594 
  595                 if (ncompat != 0) {
  596                         printf "\n#ifdef %s\n", compat > sysinc
  597                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
  598                         printf "#else\n" > sysinc
  599                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  600                         printf "#endif\n" > sysinc
  601                 }
  602 
  603                 if (ncompat4 != 0) {
  604                         printf "\n#ifdef %s\n", compat4 > sysinc
  605                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
  606                         printf "#else\n" > sysinc
  607                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  608                         printf "#endif\n" > sysinc
  609                 }
  610 
  611                 if (ncompat6 != 0) {
  612                         printf "\n#ifdef %s\n", compat6 > sysinc
  613                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
  614                         printf "#else\n" > sysinc
  615                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  616                         printf "#endif\n" > sysinc
  617                 }
  618 
  619                 if (ncompat7 != 0) {
  620                         printf "\n#ifdef %s\n", compat7 > sysinc
  621                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
  622                         printf "#else\n" > sysinc
  623                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  624                         printf "#endif\n" > sysinc
  625                 }
  626 
  627                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
  628                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
  629                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
  630                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
  631 
  632                 printf("\n#undef PAD_\n") > sysprotoend
  633                 printf("#undef PADL_\n") > sysprotoend
  634                 printf("#undef PADR_\n") > sysprotoend
  635                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
  636 
  637                 printf("\n") > sysmk
  638                 printf("};\n") > sysent
  639                 printf("};\n") > sysnames
  640                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
  641                     > syshdr
  642                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
  643                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
  644                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
  645         } '
  646 
  647 cat $sysinc $sysent >> $syssw
  648 cat $sysarg $sysdcl \
  649         $syscompat $syscompatdcl \
  650         $syscompat4 $syscompat4dcl \
  651         $syscompat6 $syscompat6dcl \
  652         $syscompat7 $syscompat7dcl \
  653         $sysaue $sysprotoend > $sysproto
  654 cat $systracetmp >> $systrace
  655 cat $systraceret >> $systrace
  656
Cache object: f8e542eab37da5808d288c436df3291a
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FreeBSD/Linux Kernel Cross Reference sys/kern/makesyscalls.sh

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