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