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