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 1.7 2003/07/30 00:19:14 dillon 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 syscallprefix="SYS_"
  21 switchname="sysent"
  22 namesname="syscallnames"
  23
  24 # tmp files:
  25 sysdcl="sysent.dcl.$$"
  26 syscompat="sysent.compat.$$"
  27 syscompatdcl="sysent.compatdcl.$$"
  28 sysent="sysent.switch.$$"
  29 sysinc="sysinc.switch.$$"
  30 sysarg="sysarg.switch.$$"
  31 sysun="sysunion.switch.$$"
  32
  33 trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun" 0
  34
  35 touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun
  36
  37 case $# in
  38     0)  echo "Usage: $0 input-file <config-file>" 1>&2
  39         exit 1
  40         ;;
  41 esac
  42
  43 if [ -n "$2" -a -f "$2" ]; then
  44         . $2
  45 fi
  46
  47 sed -e '
  48 s/\$//g
  49 :join
  50         /\\$/{a\
  51
  52         N
  53         s/\\\n//
  54         b join
  55         }
  56 2,${
  57         /^#/!s/\([{}()*,]\)/ \1 /g
  58 }
  59 ' < $1 | awk "
  60         BEGIN {
  61                 sysdcl = \"$sysdcl\"
  62                 sysproto = \"$sysproto\"
  63                 sysproto_h = \"$sysproto_h\"
  64                 syscompat = \"$syscompat\"
  65                 syscompatdcl = \"$syscompatdcl\"
  66                 sysent = \"$sysent\"
  67                 syssw = \"$syssw\"
  68                 sysinc = \"$sysinc\"
  69                 sysarg = \"$sysarg\"
  70                 sysun = \"$sysun\"
  71                 sysnames = \"$sysnames\"
  72                 syshdr = \"$syshdr\"
  73                 sysmk = \"$sysmk\"
  74                 compat = \"$compat\"
  75                 syshide = \"$syshide\"
  76                 syscallprefix = \"$syscallprefix\"
  77                 switchname = \"$switchname\"
  78                 namesname = \"$namesname\"
  79                 infile = \"$1\"
  80                 "'
  81
  82                 printf "/*\n * System call switch table.\n *\n" > syssw
  83                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  84                 printf " * \$\DragonFly\$\n" > syssw
  85
  86                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  87                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  88                 printf " * \$\DragonFly\$\n" > sysarg
  89
  90                 printf "\n#ifdef %s\n\n", compat > syscompat
  91
  92                 printf "/*\n * System call names.\n *\n" > sysnames
  93                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  94                 printf " * \$\DragonFly\$\n" > sysnames
  95
  96                 printf "/*\n * System call numbers.\n *\n" > syshdr
  97                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
  98                 printf " * \$\DragonFly\$\n" > syshdr
  99                 printf "# DragonFly system call names.\n" > sysmk
 100                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 101                 printf "# \$\DragonFly\$\n" > sysmk
 102                 printf "/*\n * System call hiders.\n *\n" > syshide
 103                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
 104                 printf " * \$\DragonFly\$\n" > syshide
 105
 106                 printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
 107                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysun
 108                 printf " * \$\DragonFly\$\n" > sysun
 109                 printf "\n#ifdef _KERNEL\n\n" > sysdcl
 110                 printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
 111         }
 112         NR == 1 {
 113                 gsub("[$]DragonFly: ", "", $0)
 114                 gsub(" [$]", "", $0)
 115
 116                 printf " * created from%s\n */\n\n", $0 > syssw
 117
 118                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 119                 printf "struct sysent %s[] = {\n",switchname > sysent
 120
 121                 printf " * created from%s\n */\n\n", $0 > sysarg
 122                 printf "#ifndef %s\n", sysproto_h > sysarg
 123                 printf "#define\t%s\n\n", sysproto_h > sysarg
 124                 printf "#include <sys/signal.h>\n\n" > sysarg
 125                 printf "#include <sys/acl.h>\n\n" > sysarg
 126                 printf "#include <sys/msgport.h>\n\n" > sysarg
 127                 printf "#include <sys/sysmsg.h>\n\n" > sysarg
 128                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 129                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 130
 131                 printf " * created from%s\n */\n\n", $0 > sysnames
 132                 printf "char *%s[] = {\n", namesname > sysnames
 133
 134                 printf " * created from%s\n */\n\n", $0 > syshdr
 135
 136                 printf "# created from%s\nMIASM = ", $0 > sysmk
 137
 138                 printf " * created from%s\n */\n\n", $0 > syshide
 139                 printf " * created from%s\n */\n\n", $0 > sysun
 140                 printf "union sysunion {\n" > sysun
 141                 printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
 142                 printf "\tunion\tsysmsg sysmsg;\n" > sysun
 143                 next
 144         }
 145         NF == 0 || $1 ~ /^;/ {
 146                 next
 147         }
 148         $1 ~ /^#[       ]*include/ {
 149                 print > sysinc
 150                 next
 151         }
 152         $1 ~ /^#[       ]*if/ {
 153                 print > sysent
 154                 print > sysdcl
 155                 print > sysarg
 156                 print > syscompat
 157                 print > sysnames
 158                 print > syshide
 159                 print > sysun
 160                 savesyscall = syscall
 161                 next
 162         }
 163         $1 ~ /^#[       ]*else/ {
 164                 print > sysent
 165                 print > sysdcl
 166                 print > sysarg
 167                 print > sysun
 168                 print > syscompat
 169                 print > sysnames
 170                 print > syshide
 171                 syscall = savesyscall
 172                 next
 173         }
 174         $1 ~ /^#/ {
 175                 print > sysent
 176                 print > sysdcl
 177                 print > sysarg
 178                 print > sysun
 179                 print > syscompat
 180                 print > sysnames
 181                 print > syshide
 182                 next
 183         }
 184         syscall != $1 {
 185                 printf "%s: line %d: syscall number out of sync at %d\n",
 186                     infile, NR, syscall
 187                 printf "line is:\n"
 188                 print
 189                 exit 1
 190         }
 191         function align_sysent_comment(column) {
 192                 printf("\t") > sysent
 193                 column = column + 8 - column % 8
 194                 while (column < 56) {
 195                         printf("\t") > sysent
 196                         column = column + 8
 197                 }
 198         }
 199         function parserr(was, wanted) {
 200                 printf "%s: line %d: unexpected %s (expected %s)\n",
 201                     infile, NR, was, wanted
 202                 exit 1
 203         }
 204         function parseline() {
 205                 f=4                     # toss number and type
 206                 argc= 0;
 207                 argssize = "0"
 208                 if ($NF != "}") {
 209                         funcalias=$(NF-2)
 210                         argalias=$(NF-1)
 211                         rettype=$NF
 212                         end=NF-3
 213                 } else {
 214                         funcalias=""
 215                         argalias=""
 216                         rettype="int"
 217                         end=NF
 218                 }
 219                 if ($2 == "NODEF") {
 220                         funcname=$4
 221                         argssize = "AS(" $6 ")"
 222                         return
 223                 }
 224                 if ($f != "{")
 225                         parserr($f, "{")
 226                 f++
 227                 if ($end != "}")
 228                         parserr($end, "}")
 229                 end--
 230                 if ($end != ";")
 231                         parserr($end, ";")
 232                 end--
 233                 if ($end != ")")
 234                         parserr($end, ")")
 235                 end--
 236
 237                 f++     #function return type
 238
 239                 funcname=$f
 240                 usefuncname=$f
 241                 if (funcalias == "")
 242                         funcalias = funcname
 243                 if (argalias == "") {
 244                         argalias = funcname "_args"
 245                         if ($2 == "COMPAT") {
 246                                 argalias = "o" argalias
 247                                 usefuncname = "o" funcname
 248                         }
 249                 }
 250                 f++
 251
 252                 if ($f != "(")
 253                         parserr($f, ")")
 254                 f++
 255
 256                 if (f == end) {
 257                         if ($f != "void")
 258                                 parserr($f, "argument definition")
 259                         return
 260                 }
 261
 262                 while (f <= end) {
 263                         argc++
 264                         argtype[argc]=""
 265                         oldf=""
 266                         while (f < end && $(f+1) != ",") {
 267                                 if (argtype[argc] != "" && oldf != "*")
 268                                         argtype[argc] = argtype[argc]" ";
 269                                 argtype[argc] = argtype[argc]$f;
 270                                 oldf = $f;
 271                                 f++
 272                         }
 273                         if (argtype[argc] == "")
 274                                 parserr($f, "argument definition")
 275                         argname[argc]=$f;
 276                         f += 2;                 # skip name, and any comma
 277                 }
 278                 if (argc != 0)
 279                         argssize = "AS(" argalias ")"
 280         }
 281         {       comment = $4
 282                 if (NF < 7)
 283                         for (i = 5; i <= NF; i++)
 284                                 comment = comment " " $i
 285         }
 286         # if the "MPSAFE" keyword is found, note it and shift the line
 287         mpsafe = ""
 288         $2 == "MPSAFE" {
 289                 for (i = 2; i <= NF; i++)
 290                         $i = $(i + 1);
 291                 NF -= 1;
 292                 mpsafe = "SYF_MPSAFE | "
 293         }
 294         $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
 295             || $2 == "NOIMPL" {
 296                 parseline()
 297                 if ((!nosys || funcname != "nosys") && \
 298                     (funcname != "lkmnosys")) {
 299                         if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
 300                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 301                                 printf("struct\t%s {\n", argalias) > sysarg
 302                                 printf("\tunion sysmsg sysmsg;\n") > sysarg
 303                                 for (i = 1; i <= argc; i++)
 304                                         printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 305                                             argtype[i], argname[i],
 306                                             argname[i], argtype[i]) > sysarg
 307                                 printf("};\n") > sysarg
 308                         }
 309                         else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
 310                             $2 != "NODEF") {
 311                                 printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 312                                 printf("struct\t%s {\n", argalias) > sysarg
 313                                 printf("\tunion sysmsg sysmsg;\n") > sysarg
 314                                 printf("\tregister_t dummy;\n") > sysarg
 315                                 printf("};\n") > sysarg
 316                         }
 317                 }
 318                 if (($2 != "NOPROTO" && $2 != "NODEF" && \
 319                     (funcname != "nosys" || !nosys)) || \
 320                     (funcname == "lkmnosys" && !lkmnosys) || \
 321                     funcname == "lkmressys") {
 322                         printf("%s\t%s __P((struct %s *))",
 323                             rettype, funcname, argalias) > sysdcl
 324                         printf(";\n") > sysdcl
 325                 }
 326                 if (funcname == "nosys")
 327                         nosys = 1
 328                 if (funcname == "lkmnosys")
 329                         lkmnosys = 1
 330                 printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
 331                 column = 8 + 2 + length(mpsafe) + length(argssize) + 15
 332                 if ($2 != "NOIMPL") {
 333                         printf("%s },", funcname) > sysent
 334                         column = column + length(funcname) + 3
 335                 } else {
 336                         printf("%s },", "nosys") > sysent
 337                         column = column + length("nosys") + 3
 338                 }
 339                 align_sysent_comment(column)
 340                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 341                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 342                     funcalias, syscall, funcalias) > sysnames
 343                 if ($2 != "NODEF") {
 344                         printf("#define\t%s%s\t%d\n", syscallprefix,
 345                             funcalias, syscall) > syshdr
 346                         printf(" \\\n\t%s.o", funcalias) > sysmk
 347                 }
 348                 if ($3 != "NOHIDE")
 349                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 350                 syscall++
 351                 next
 352         }
 353         $2 == "COMPAT" || $2 == "CPT_NOA" {
 354                 ncompat++
 355                 parseline()
 356                 if (argc != 0 && $2 != "CPT_NOA") {
 357                         printf("#ifdef %s\n", compat) > sysun
 358                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 359                         printf("#endif\n") > sysun
 360                         printf("struct\t%s {\n", argalias) > syscompat
 361                         printf("\tunion sysmsg sysmsg;\n") > syscompat
 362                         for (i = 1; i <= argc; i++)
 363                                 printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
 364                                     argtype[i], argname[i],
 365                                     argname[i], argtype[i]) > syscompat
 366                         printf("};\n") > syscompat
 367                 }
 368                 else if($2 != "CPT_NOA") {
 369                         printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
 370                         printf("struct\t%s {\n", argalias) > sysarg
 371                         printf("\tunion sysmsg sysmsg;\n") > sysarg
 372                         printf("\tregister_t dummy;\n") > sysarg
 373                         printf("};\n") > sysarg
 374                 }
 375                 printf("%s\to%s __P((struct %s *));\n",
 376                     rettype, funcname, argalias) > syscompatdcl
 377                 printf("\t{ compat(%s%s,%s) },",
 378                     mpsafe, argssize, funcname) > sysent
 379                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 380                     length(argssize) + 1 + length(funcname) + 4)
 381                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 382                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 383                     funcalias, syscall, funcalias) > sysnames
 384                 printf("\t\t\t\t/* %d is old %s */\n",
 385                     syscall, funcalias) > syshdr
 386                 if ($3 != "NOHIDE")
 387                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 388                 syscall++
 389                 next
 390         }
 391         $2 == "LIBCOMPAT" {
 392                 ncompat++
 393                 parseline()
 394                 printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
 395                 printf("\t{ compat(%s%s,%s) },",
 396                     mpsafe, argssize, funcname) > sysent
 397                 align_sysent_comment(8 + 9 + length(mpsafe) + \
 398                     length(argssize) + 1 + length(funcname) + 4)
 399                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 400                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 401                     funcalias, syscall, funcalias) > sysnames
 402                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 403                     syscallprefix, funcalias, syscall) > syshdr
 404                 printf(" \\\n\t%s.o", funcalias) > sysmk
 405                 if ($3 != "NOHIDE")
 406                         printf("HIDE_%s(%s)\n", $3, funcname) > syshide
 407                 syscall++
 408                 next
 409         }
 410         $2 == "OBSOL" {
 411                 printf("\t{ 0, (sy_call_t *)nosys },") > sysent
 412                 align_sysent_comment(34)
 413                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 414                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 415                     $4, syscall, comment) > sysnames
 416                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 417                     syscall, comment) > syshdr
 418                 if ($3 != "NOHIDE")
 419                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 420                 syscall++
 421                 next
 422         }
 423         $2 == "UNIMPL" {
 424                 printf("\t{ 0, (sy_call_t *)nosys },\t\t\t/* %d = %s */\n",
 425                     syscall, comment) > sysent
 426                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 427                     syscall, syscall, comment) > sysnames
 428                 if ($3 != "NOHIDE")
 429                         printf("HIDE_%s(%s)\n", $3, $4) > syshide
 430                 syscall++
 431                 next
 432         }
 433         {
 434                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
 435                 exit 1
 436         }
 437         END {
 438                 printf "\n#define AS(name) ((sizeof(struct name) - sizeof(union sysmsg)) / sizeof(register_t))\n" > sysinc
 439                 if (ncompat != 0) {
 440                         printf "#include \"opt_compat.h\"\n\n" > syssw
 441                         printf "\n#ifdef %s\n", compat > sysinc
 442                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 443                         printf "#else\n" > sysinc
 444                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 445                         printf "#endif\n" > sysinc
 446                 }
 447
 448                 printf("\n#endif /* _KERNEL */\n") > syscompatdcl
 449                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 450                 printf("#undef PAD_\n") > syscompatdcl
 451                 printf("\n#endif /* !%s */\n", sysproto_h) > syscompatdcl
 452
 453                 printf("\n") > sysmk
 454                 printf("};\n") > sysent
 455                 printf("};\n") > sysnames
 456                 printf("};\n") > sysun
 457                 printf("\n#endif /* _KERNEL */\n") > sysdcl
 458                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 459                     > syshdr
 460         } '
 461
 462 cat $sysinc $sysent >> $syssw
 463 cat $sysarg $sysdcl $syscompat $syscompatdcl > $sysproto
 464 cat $sysun > $sysunion