sys/kern/makesyscalls.sh

   1 #! /bin/sh -
   2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
   3 # $FreeBSD: src/sys/kern/makesyscalls.sh,v 1.39.2.4 2001/10/20 09:01:24 marcel Exp $
   4 # $DragonFly: src/sys/kern/makesyscalls.sh,v 1.11 2004/08/12 19:59:30 eirikn Exp $
   5
   6 set -e
   7
   8 # name of compat option:
   9 compat=COMPAT_43
  10
  11 # output files:
  12 sysnames="syscalls.c"
  13 sysproto="../sys/sysproto.h"
  14 sysunion="../sys/sysunion.h"
  15 sysproto_h=_SYS_SYSPROTO_H_
  16 syshdr="../sys/syscall.h"
  17 sysmk="../sys/syscall.mk"
  18 syssw="init_sysent.c"
  19 syshide="../sys/syscall-hide.h"
  20 sysargs="../sys/syscall-args"
  21 syscallprefix="SYS_"
  22 switchname="sysent"
  23 namesname="syscallnames"
  24
  25 # tmp files:
  26 sysdcl="sysent.dcl.$$"
  27 syscompat="sysent.compat.$$"
  28 syscompatdcl="sysent.compatdcl.$$"
  29 sysent="sysent.switch.$$"
  30 sysinc="sysinc.switch.$$"
  31 sysarg="sysarg.switch.$$"
  32 sysun="sysunion.switch.$$"
  33
  34 trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun" 0
  35
  36 touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun
  37
  38 case $# in
  39     0)  echo "Usage: $0 input-file <config-file>" 1>&2
  40         exit 1
  41         ;;
  42 esac
  43
  44 if [ -n "$2" -a -f "$2" ]; then
  45         . $2
  46 fi
  47
  48 sed -e '
  49 s/\$//g
  50 :join
  51         /\\$/{a\
  52
  53         N
  54         s/\\\n//
  55         b join
  56         }
  57 2,${
  58         /^#/!s/\([{}()*,]\)/ \1 /g
  59 }
  60 ' < $1 | awk "
  61         BEGIN {
  62                 sysdcl = \"$sysdcl\"
  63                 sysproto = \"$sysproto\"
  64                 sysproto_h = \"$sysproto_h\"
  65                 syscompat = \"$syscompat\"
  66                 syscompatdcl = \"$syscompatdcl\"
  67                 sysent = \"$sysent\"
  68                 syssw = \"$syssw\"
  69                 sysinc = \"$sysinc\"
  70                 sysarg = \"$sysarg\"
  71                 sysun = \"$sysun\"
  72                 sysnames = \"$sysnames\"
  73                 syshdr = \"$syshdr\"
  74                 sysmk = \"$sysmk\"
  75                 compat = \"$compat\"
  76                 syshide = \"$syshide\"
  77                 syscallprefix = \"$syscallprefix\"
  78                 switchname = \"$switchname\"
  79                 namesname = \"$namesname\"
  80                 infile = \"$1\"
  81                 sysargs = \"$sysargs\"
  82                 "'
  83
  84                 printf "/*\n * System call switch table.\n *\n" > syssw
  85                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  86                 printf " * \$\DragonFly\$\n" > syssw
  87
  88                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  89                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  90                 printf " * \$\DragonFly\$\n" > sysarg
  91
  92                 printf "\n#ifdef %s\n\n", compat > syscompat
  93
  94                 printf "/*\n * System call names.\n *\n" > sysnames
  95                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  96                 printf " * \$\DragonFly\$\n" > sysnames
  97
  98                 printf "/*\n * System call numbers.\n *\n" > syshdr
  99                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 100                 printf " * \$\DragonFly\$\n" > syshdr
 101                 printf "# DragonFly system call names.\n" > sysmk
 102                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 103                 printf "# \$\DragonFly\$\n" > sysmk
 104                 printf "/*\n * System call hiders.\n *\n" > syshide
 105                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
 106                 printf " * \$\DragonFly\$\n" > syshide
 107
 108                 printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
 109                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysun
 110                 printf " * \$\DragonFly\$\n" > sysun
 111                 printf "\n#ifdef _KERNEL\n\n" > sysdcl
 112                 printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
 113
 114                 printf "# System call argument table.\n" > sysargs
 115                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysargs
 116                 printf "# \$\DragonFly\$\n" > sysargs
 117         }
 118         NR == 1 {
 119                 gsub("[$]DragonFly: ", "", $0)
 120                 gsub(" [$]", "", $0)
 121
 122                 printf " * created from%s\n */\n\n", $0 > syssw
 123
 124                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 125                 printf "struct sysent %s[] = {\n",switchname > sysent
 126
 127                 printf " * created from%s\n */\n\n", $0 > sysarg
 128                 printf "#ifndef %s\n", sysproto_h > sysarg
 129                 printf "#define\t%s\n\n", sysproto_h > sysarg
 130                 printf "#include <sys/signal.h>\n\n" > sysarg
 131                 printf "#include <sys/acl.h>\n\n" > sysarg
 132                 printf "#include <sys/msgport.h>\n\n" > sysarg
 133                 printf "#include <sys/sysmsg.h>\n\n" > sysarg
 134                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 135                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 136
 137                 printf " * created from%s\n */\n\n", $0 > sysnames
 138                 printf "char *%s[] = {\n", namesname > sysnames
 139
 140                 printf " * created from%s\n */\n\n", $0 > syshdr
 141
 142                 printf "# created from%s\nMIASM = ", $0 > sysmk
 143
 144                 printf " * created from%s\n */\n\n", $0 > syshide
 145                 printf " * created from%s\n */\n\n", $0 > sysun
 146                 printf "union sysunion {\n" > sysun
 147                 printf "#ifdef _KERNEL /* header only applies in kernel */\n" > sysun
 148                 printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
 149                 printf "\tstruct\tsysmsg sysmsg;\n" > sysun
 150                 printf "#endif\n" > sysun
 151
 152                 printf "\n# Created from%s\n\n", $0 > sysargs
 153                 next
 154         }
 155         NF == 0 || $1 ~ /^;/ {
 156                 next
 157         }
 158         $1 ~ /^#[       ]*include/ {
 159                 print > sysinc
 160                 next
 161         }
 162         $1 ~ /^#[       ]*if/ {
 163                 print > sysent
 164                 print > sysdcl
 165                 print > sysarg
 166                 print > syscompat
 167                 print > sysnames
 168                 print > syshide
 169                 print > sysun
 170                 savesyscall = syscall
 171                 next
 172         }
 173         $1 ~ /^#[       ]*else/ {
 174                 print > sysent
 175                 print > sysdcl
 176                 print > sysarg
 177                 print > sysun
 178                 print > syscompat
 179                 print > sysnames
 180                 print > syshide
 181                 syscall = savesyscall
 182                 next
 183         }
 184         $1 ~ /^#/ {
 185                 print > sysent
 186                 print > sysdcl
 187                 print > sysarg
 188                 print > sysun
 189                 print > syscompat
 190                 print > sysnames
 191                 print > syshide
 192                 next
 193         }
 194         syscall != $1 {
 195                 printf "%s: line %d: syscall number out of sync at %d\n",
 196                     infile, NR, syscall
 197                 printf "line is:\n"
 198                 print
 199                 exit 1
 200         }
 201         function align_sysent_comment(column) {
 202                 printf("\t") > sysent
 203                 column = column + 8 - column % 8
 204                 while (column < 56) {
 205                         printf("\t") > sysent
 206                         column = column + 8
 207                 }
 208         }
 209         function parserr(was, wanted) {
 210                 printf "%s: line %d: unexpected %s (expected %s)\n",
 211                     infile, NR, was, wanted
 212                 exit 1
 213         }
 214         function parseline() {
 215                 f=4                     # toss number and type
 216                 argc= 0;
 217                 argssize = "0"
 218                 if ($NF != "}") {
 219                         funcalias=$(NF-2)
 220                         argalias=$(NF-1)
 221                         rettype=$NF
 222                         end=NF-3
 223                 } else {
 224                         funcalias=""
 225                         argalias=""
 226                         rettype="int"
 227                         end=NF
 228                 }
 229                 if ($2 == "NODEF") {
 230                         funcname=$4
 231                         argssize = "AS(" $6 ")"
 232                         return
 233                 }
 234                 if ($f != "{")
 235                         parserr($f, "{")
 236                 f++
 237                 if ($end != "}")
 238                         parserr($end, "}")
 239                 end--
 240                 if ($end != ";")
 241                         parserr($end, ";")
 242                 end--
 243                 if ($end != ")")
 244                         parserr($end, ")")
 245                 end--
 246
 247                 f++     #function return type
 248
 249                 funcname=$f
 250                 usefuncname=$f
 251                 if (funcalias == "")
 252                         funcalias = funcname
 253                 if (argalias == "") {
 254                         argalias = funcname "_args"
 255                         if ($2 == "COMPAT") {
 256                                 argalias = "o" argalias
 257                                 usefuncname = "o" funcname
 258                         }
 259                 }
 260                 f++
 261
 262                 if ($f != "(")
 263                         parserr($f, ")")
 264                 f++
 265
 266                 if (f == end) {
 267                         if ($f != "void")
 268                                 parserr($f, "argument definition")
 269                         return
 270                 }
 271
 272                 while (f <= end) {
 273                         argc++
 274                         argtype[argc]=""
 275                         oldf=""
 276                         while (f < end && $(f+1) != ",") {
 277                                 if (argtype[argc] != "" && oldf != "*")
 278                                         argtype[argc] = argtype[argc]" ";
 279                                 argtype[argc] = argtype[argc]$f;
 280                                 oldf = $f;
 281                                 f++
 282                         }
 283                         if (argtype[argc] == "")
 284                                 parserr($f, "argument definition")
 285                         argname[argc]=$f;
 286                         f += 2;                 # skip name, and any comma
 287                 }
 288                 if (argc != 0)
 289                         argssize = "AS(" argalias ")"
 290         }
 291         {       comment = $4
 292                 if (NF < 7)
 293                         for (i = 5; i <= NF; i++)
 294                                 comment = comment " " $i
 295         }
 296         # if the "MPSAFE" keyword is found, note it and shift the line
 297         mpsafe = ""
 298         $2 == "MPSAFE" {
 299                 for (i = 2; i <= NF; i++)
 300                         $i = $(i + 1);
 301                 NF -= 1;
 302                 mpsafe = "SYF_MPSAFE | "
 303         }
 304         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 305             || $2 == "NOIMPL" {
 306                 parseline()
 307                 if ((!nosys || funcname != "nosys") && \
 308                     (funcname != "lkmnosys")) {
 309                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 310                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 311                                 printf("struct\t%s {\n", argalias) > sysarg
 312                                 printf("#ifdef _KERNEL\n") > sysarg
 313                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 314                                 printf("#endif\n") > sysarg
 315                                 printf("\tunion usrmsg usrmsg;\n") > sysarg
 316                                 for (i = 1; i <= argc; i++)
 317                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 318                                             argtype[i], argname[i],
 319                                             argname[i], argtype[i]) > sysarg
 320                                 printf("};\n") > sysarg
 321                         }
 322                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 323                             $2 != "NODEF") {
 324                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 325                                 printf("struct\t%s {\n", argalias) > sysarg
 326                                 printf("#ifdef _KERNEL\n") > sysarg
 327                                 printf("\tstruct sysmsg sysmsg;\n") > sysarg
 328                                 printf("#endif\n") > sysarg
 329                                 printf("\tunion usrmsg usrmsg;\n") > sysarg
 330                                 printf("\tregister_t dummy;\n") > sysarg
 331                                 printf("};\n") > sysarg
 332                         }
 333                 }
 334                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 335                     (funcname != "nosys" || !nosys)) || \
 336                     (funcname == "lkmnosys" && !lkmnosys) || \
 337                     funcname == "lkmressys") {
 338                         printf("%s\t%s (struct %s *)",
 339                             rettype, funcname, argalias) > sysdcl
 340                         printf(";\n") > sysdcl
 341                 }
 342                 if (funcname == "nosys")
 343                         nosys = 1
 344                 if (funcname == "lkmnosys")
 345                         lkmnosys = 1
 346                 printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
 347                 column = 8 + 2 + length(mpsafe) + length(argssize) + 15
 348                 if ($2 != "NOIMPL") {
 349                         printf("%s },", funcname) > sysent
 350                         column = column + length(funcname) + 3
 351                 } else {
 352                         printf("%s },", "nosys") > sysent
 353                         column = column + length("nosys") + 3
 354                 }
 355                 align_sysent_comment(column)
 356                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 357                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 358                     funcalias, syscall, funcalias) > sysnames
 359                 if ($2 != "NODEF") {
 360                         printf("#define\t%s%s\t%d\n", syscallprefix,
 361                             funcalias, syscall) > syshdr
 362                         printf(" \\\n\t%s.o", funcalias) > sysmk
 363                         printf("%s\t%s\t%s\t%s", rettype, funcalias, usefuncname, argalias) > sysargs
 364                         for (i = 1; i <= argc; i++)
 365                                 printf("\t%s\t%s", argtype[i], argname[i]) > sysargs
 366                         printf("\n") > sysargs
 367                 }
 368                 if ($3 != "NOHIDE")
 369                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 370                 syscall++
 371                 next
 372         }
 373         $2 == "COMPAT" || $2 == "CPT_NOA" {
 374                 ncompat++
 375                 parseline()
 376                 if (argc != 0 && $2 != "CPT_NOA") {
 377                         printf("#ifdef %s\n", compat) > sysun
 378                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 379                         printf("#endif\n") > sysun
 380                         printf("struct\t%s {\n", argalias) > syscompat
 381                         printf("#ifdef _KERNEL\n") > syscompat
 382                         printf("\tstruct sysmsg sysmsg;\n") > syscompat
 383                         printf("#endif\n") > syscompat
 384                         printf("\tunion usrmsg usrmsg;\n") > syscompat
 385                         for (i = 1; i <= argc; i++)
 386                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 387                                     argtype[i], argname[i],
 388                                     argname[i], argtype[i]) > syscompat
 389                         printf("};\n") > syscompat
 390                 }
 391                 else if($2 != "CPT_NOA") {
 392                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 393                         printf("struct\t%s {\n", argalias) > sysarg
 394                         printf("#ifdef _KERNEL\n") > sysarg
 395                         printf("\tstruct sysmsg sysmsg;\n") > sysarg
 396                         printf("#endif\n") > sysarg
 397                         printf("\tunion usrmsg usrmsg;\n") > sysarg
 398                         printf("\tregister_t dummy;\n") > sysarg
 399                         printf("};\n") > sysarg
 400                 }
 401                 printf("%s\to%s (struct %s *);\n",
 402                     rettype, funcname, argalias) > syscompatdcl
 403                 printf("\t{ compat(%s%s,%s) },",
 404                     mpsafe, argssize, funcname) > sysent
 405                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 406                     length(argssize) + 1 + length(funcname) + 4)
 407                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 408                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 409                     funcalias, syscall, funcalias) > sysnames
 410                 printf("\t\t\t\t/* %d is old %s */\n",
 411                     syscall, funcalias) > syshdr
 412                 if ($3 != "NOHIDE")
 413                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 414                 syscall++
 415                 next
 416         }
 417         $2 == "LIBCOMPAT" {
 418                 ncompat++
 419                 parseline()
 420                 printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
 421                 printf("\t{ compat(%s%s,%s) },",
 422                     mpsafe, argssize, funcname) > sysent
 423                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 424                     length(argssize) + 1 + length(funcname) + 4)
 425                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 426                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 427                     funcalias, syscall, funcalias) > sysnames
 428                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 429                     syscallprefix, funcalias, syscall) > syshdr
 430                 printf(" \\\n\t%s.o", funcalias) > sysmk
 431                 printf("%s\t%s\t%s\t%s", rettype, funcalias, usefuncname, argalias) > sysargs
 432                 for (i = 1; i <= argc; i++)
 433                         printf("\t%s\t%s", argtype[i], argname[i]) > sysargs
 434                 printf("\n") > sysargs
 435                 if ($3 != "NOHIDE")
 436                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 437                 syscall++
 438                 next
 439         }
 440         $2 == "OBSOL" {
 441                 printf("\t{ 0, (sy_call_t *)nosys },") > sysent
 442                 align_sysent_comment(34)
 443                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 444                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 445                     $4, syscall, comment) > sysnames
 446                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 447                     syscall, comment) > syshdr
 448                 if ($3 != "NOHIDE")
 449                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 450                 syscall++
 451                 next
 452         }
 453         $2 == "UNIMPL" {
 454                 printf("\t{ 0, (sy_call_t *)nosys },\t\t\t/* %d = %s */\n",
 455                     syscall, comment) > sysent
 456                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 457                     syscall, syscall, comment) > sysnames
 458                 if ($3 != "NOHIDE")
 459                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 460                 syscall++
 461                 next
 462         }
 463         {
 464                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 465                 exit 1
 466         }
 467         END {
 468                 printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg) - sizeof(union usrmsg)) / sizeof(register_t))\n" > sysinc
 469                 if (ncompat != 0) {
 470                         printf "#include \"opt_compat.h\"\n\n" > syssw
 471                         printf "\n#ifdef %s\n", compat > sysinc
 472                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 473                         printf "#else\n" > sysinc
 474                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 475                         printf "#endif\n" > sysinc
 476                 }
 477
 478                 printf("\n#endif /* _KERNEL */\n") > syscompatdcl
 479                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 480                 printf("#undef PAD_\n") > syscompatdcl
 481                 printf("\n#endif /* !%s */\n", sysproto_h) > syscompatdcl
 482
 483                 printf("\n") > sysmk
 484                 printf("};\n") > sysent
 485                 printf("};\n") > sysnames
 486                 printf("};\n") > sysun
 487                 printf("\n#endif /* _KERNEL */\n") > sysdcl
 488                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 489                     > syshdr
 490         } '
 491
 492 cat $sysinc $sysent >> $syssw
 493 cat $sysarg $sysdcl $syscompat $syscompatdcl > $sysproto
 494 cat $sysun > $sysunion