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