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