makesyscalls.sh revision 1.120
1 #! /bin/sh - 2 # $NetBSD: makesyscalls.sh,v 1.120 2012/05/05 19:37:37 christos Exp $ 3 # 4 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou 5 # All rights reserved. 6 # 7 # Redistribution and use in source and binary forms, with or without 8 # modification, are permitted provided that the following conditions 9 # are met: 10 # 1. Redistributions of source code must retain the above copyright 11 # notice, this list of conditions and the following disclaimer. 12 # 2. Redistributions in binary form must reproduce the above copyright 13 # notice, this list of conditions and the following disclaimer in the 14 # documentation and/or other materials provided with the distribution. 15 # 3. All advertising materials mentioning features or use of this software 16 # must display the following acknowledgement: 17 # This product includes software developed for the NetBSD Project 18 # by Christopher G. Demetriou. 19 # 4. The name of the author may not be used to endorse or promote products 20 # derived from this software without specific prior written permission 21 # 22 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33 # @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93 34 35 set -e 36 37 case $# in 38 2) ;; 39 *) echo "Usage: $0 config-file input-file" 1>&2 40 exit 1 41 ;; 42 esac 43 44 # the config file sets the following variables: 45 # sysalign check for alignment of off_t 46 # sysnames the syscall names file 47 # sysnumhdr the syscall numbers file 48 # syssw the syscall switch file 49 # sysarghdr the syscall argument struct definitions 50 # compatopts those syscall types that are for 'compat' syscalls 51 # switchname the name for the 'struct sysent' we define 52 # namesname the name for the 'const char *[]' we define 53 # constprefix the prefix for the system call constants 54 # registertype the type for register_t 55 # nsysent the size of the sysent table 56 # sys_nosys [optional] name of function called for unsupported 57 # syscalls, if not sys_nosys() 58 # maxsysargs [optiona] the maximum number or arguments 59 # 60 # NOTE THAT THIS makesyscalls.sh DOES NOT SUPPORT 'SYSLIBCOMPAT'. 61 62 # source the config file. 63 sys_nosys="sys_nosys" # default is sys_nosys(), if not specified otherwise 64 maxsysargs=8 # default limit is 8 (32bit) arguments 65 rumpcalls="/dev/null" 66 rumpcallshdr="/dev/null" 67 rumpsysent="rumpsysent.tmp" 68 . ./$1 69 70 # tmp files: 71 sysdcl="sysent.dcl" 72 sysprotos="sys.protos" 73 syscompat_pref="sysent." 74 sysent="sysent.switch" 75 sysnamesbottom="sysnames.bottom" 76 rumptypes="rumphdr.types" 77 rumpprotos="rumphdr.protos" 78 79 trap "rm $sysdcl $sysprotos $sysent $sysnamesbottom $rumpsysent $rumptypes $rumpprotos" 0 80 81 # Awk program (must support nawk extensions) 82 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 83 awk=${AWK:-awk} 84 85 # Does this awk have a "toupper" function? 86 have_toupper=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 87 88 # If this awk does not define "toupper" then define our own. 89 if [ "$have_toupper" = TRUE ] ; then 90 # Used awk (GNU awk or nawk) provides it 91 toupper= 92 else 93 # Provide our own toupper() 94 toupper=' 95 function toupper(str) { 96 _toupper_cmd = "echo "str" |tr a-z A-Z" 97 _toupper_cmd | getline _toupper_str; 98 close(_toupper_cmd); 99 return _toupper_str; 100 }' 101 fi 102 103 # before handing it off to awk, make a few adjustments: 104 # (1) insert spaces around {, }, (, ), *, and commas. 105 # (2) get rid of any and all dollar signs (so that rcs id use safe) 106 # 107 # The awk script will deal with blank lines and lines that 108 # start with the comment character (';'). 109 110 sed -e ' 111 s/\$//g 112 :join 113 /\\$/{a\ 114 115 N 116 s/\\\n// 117 b join 118 } 119 2,${ 120 /^#/!s/\([{}()*,|]\)/ \1 /g 121 } 122 ' < $2 | $awk " 123 $toupper 124 BEGIN { 125 # Create a NetBSD tag that does not get expanded when checking 126 # this script out of CVS. (This part of the awk script is in a 127 # shell double-quoted string, so the backslashes are eaten by 128 # the shell.) 129 tag = \"\$\" \"NetBSD\" \"\$\" 130 131 # to allow nested #if/#else/#endif sets 132 savedepth = 0 133 # to track already processed syscalls 134 135 sysnames = \"$sysnames\" 136 sysprotos = \"$sysprotos\" 137 sysnumhdr = \"$sysnumhdr\" 138 sysarghdr = \"$sysarghdr\" 139 sysarghdrextra = \"$sysarghdrextra\" 140 rumpcalls = \"$rumpcalls\" 141 rumpcallshdr = \"$rumpcallshdr\" 142 rumpsysent = \"$rumpsysent\" 143 switchname = \"$switchname\" 144 namesname = \"$namesname\" 145 constprefix = \"$constprefix\" 146 registertype = \"$registertype\" 147 sysalign=\"$sysalign\" 148 if (!registertype) { 149 registertype = \"register_t\" 150 } 151 nsysent = \"$nsysent\" 152 153 sysdcl = \"$sysdcl\" 154 syscompat_pref = \"$syscompat_pref\" 155 sysent = \"$sysent\" 156 sysnamesbottom = \"$sysnamesbottom\" 157 rumpprotos = \"$rumpprotos\" 158 rumptypes = \"$rumptypes\" 159 sys_nosys = \"$sys_nosys\" 160 maxsysargs = \"$maxsysargs\" 161 infile = \"$2\" 162 163 compatopts = \"$compatopts\" 164 "' 165 166 printf "/* %s */\n\n", tag > sysdcl 167 printf "/*\n * System call switch table.\n *\n" > sysdcl 168 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 169 170 ncompat = split(compatopts,compat) 171 for (i = 1; i <= ncompat; i++) { 172 compat_upper[i] = toupper(compat[i]) 173 174 printf "\n#ifdef %s\n", compat_upper[i] > sysent 175 printf "#define %s(func) __CONCAT(%s_,func)\n", compat[i], \ 176 compat[i] > sysent 177 printf "#else\n" > sysent 178 printf "#define %s(func) %s\n", compat[i], sys_nosys > sysent 179 printf "#endif\n" > sysent 180 } 181 182 printf "\n#define\ts(type)\tsizeof(type)\n" > sysent 183 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > sysent 184 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > sysent 185 printf "struct sysent %s[] = {\n",switchname > sysent 186 187 printf "/* %s */\n\n", tag > sysnames 188 printf "/*\n * System call names.\n *\n" > sysnames 189 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 190 191 printf "\n/*\n * System call prototypes.\n */\n\n" > sysprotos 192 193 printf "/* %s */\n\n", tag > sysnumhdr 194 printf "/*\n * System call numbers.\n *\n" > sysnumhdr 195 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnumhdr 196 197 printf "/* %s */\n\n", tag > sysarghdr 198 printf "/*\n * System call argument lists.\n *\n" > sysarghdr 199 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarghdr 200 201 printf "/* %s */\n\n", tag > rumpcalls 202 printf "/*\n * System call vector and marshalling for rump.\n *\n" > rumpcalls 203 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcalls 204 205 printf "/* %s */\n\n", tag > rumpcallshdr 206 printf "/*\n * System call protos in rump namespace.\n *\n" > rumpcallshdr 207 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcallshdr 208 } 209 NR == 1 { 210 sub(/ $/, "") 211 printf " * created from%s\n */\n\n", $0 > sysdcl 212 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysdcl 213 214 printf " * created from%s\n */\n\n", $0 > sysnames 215 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysnames 216 217 printf " * created from%s\n */\n\n", $0 > rumpcalls 218 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > rumpcalls 219 220 printf "#include <sys/param.h>\n" > rumpcalls 221 printf "#include <sys/fstypes.h>\n" > rumpcalls 222 printf "#include <sys/proc.h>\n" > rumpcalls 223 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 224 printf "#include <srcsys/syscall.h>\n" > rumpcalls 225 printf "#include <srcsys/syscallargs.h>\n\n" > rumpcalls 226 printf "#include <errno.h>\n" > rumpcalls 227 printf "#include <rump/rumpclient.h>\n\n" > rumpcalls 228 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 229 printf " rumpclient_syscall(num, data, dlen, retval)\n" > rumpcalls 230 printf "#define rsys_seterrno(error) errno = error\n" > rumpcalls 231 printf "#define rsys_alias(a,b)\n#else\n" > rumpcalls 232 printf "#include <sys/syscall.h>\n" > rumpcalls 233 printf "#include <sys/syscallargs.h>\n\n" > rumpcalls 234 printf "#include <sys/syscallvar.h>\n\n" > rumpcalls 235 printf "#include <rump/rumpuser.h>\n" > rumpcalls 236 printf "#include \"rump_private.h\"\n\n" > rumpcalls 237 printf "static int\nrsys_syscall" > rumpcalls 238 printf "(int num, void *data, size_t dlen, register_t *retval)" > rumpcalls 239 printf "\n{\n\tstruct sysent *callp = rump_sysent + num;\n" > rumpcalls 240 printf "\tint rv;\n" > rumpcalls 241 printf "\n\tKASSERT(num > 0 && num < SYS_NSYSENT);\n\n" > rumpcalls 242 printf "\trump_schedule();\n" > rumpcalls 243 printf "\trv = sy_call(callp, curlwp, data, retval);\n" > rumpcalls 244 printf "\trump_unschedule();\n\n\treturn rv;\n}\n\n" > rumpcalls 245 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 246 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 247 248 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 249 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 250 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 251 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 252 printf "#endif\n\n" > rumpcalls 253 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 254 printf "int rump_enosys(void);\n" > rumpcalls 255 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 256 printf "#endif\n" > rumpcalls 257 258 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 259 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 260 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 261 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 262 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 263 264 # System call names are included by userland (kdump(1)), so 265 # hide the include files from it. 266 printf "#if defined(_KERNEL_OPT)\n" > sysnames 267 268 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 269 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 270 271 printf " * created from%s\n */\n\n", $0 > sysnumhdr 272 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 273 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 274 275 printf " * created from%s\n */\n\n", $0 > sysarghdr 276 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 277 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 278 279 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 280 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 281 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 282 printf "#ifdef _KERNEL\n" > rumpcallshdr 283 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 284 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 285 printf "#include <sys/types.h> /* typedefs */\n" > rumpcallshdr 286 printf "#include <sys/select.h> /* typedefs */\n" > rumpcallshdr 287 printf "#include <sys/sigtypes.h> /* typedefs */\n" > rumpcallshdr 288 printf "#include <sys/socket.h> /* typedefs */\n\n" > rumpcallshdr 289 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 290 291 printf "%s", sysarghdrextra > sysarghdr 292 # Write max number of system call arguments to both headers 293 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 294 > sysnumhdr 295 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 296 > sysarghdr 297 printf "#undef\tsyscallarg\n" > sysarghdr 298 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 299 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 300 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 301 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 302 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 303 > sysarghdr 304 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 305 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 306 registertype > sysarghdr 307 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 308 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 309 registertype > sysarghdr 310 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 311 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 312 printf "\t}\n" > sysarghdr 313 printf("\n#undef check_syscall_args\n") >sysarghdr 314 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 315 "\ttypedef char call##_check_args" \ 316 "[sizeof (struct call##_args) \\\n" \ 317 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 318 constprefix, registertype) >sysarghdr 319 320 # compat types from syscalls.master. this is slightly ugly, 321 # but given that we have so few compats from over 17 years, 322 # a more complicated solution is not currently warranted. 323 uncompattypes["struct timeval50"] = "struct timeval"; 324 uncompattypes["struct timespec50"] = "struct timespec"; 325 uncompattypes["struct stat30"] = "struct stat"; 326 327 next 328 } 329 NF == 0 || $1 ~ /^;/ { 330 next 331 } 332 $0 ~ /^%%$/ { 333 intable = 1 334 next 335 } 336 $1 ~ /^#[ ]*include/ { 337 print > sysdcl 338 print > sysnames 339 next 340 } 341 $1 ~ /^#/ && !intable { 342 print > sysdcl 343 print > sysnames 344 next 345 } 346 $1 ~ /^#/ && intable { 347 if ($1 ~ /^#[ ]*if/) { 348 savedepth++ 349 savesyscall[savedepth] = syscall 350 } 351 if ($1 ~ /^#[ ]*else/) { 352 if (savedepth <= 0) { 353 printf("%s: line %d: unbalanced #else\n", \ 354 infile, NR) 355 exit 1 356 } 357 syscall = savesyscall[savedepth] 358 } 359 if ($1 ~ /^#[ ]*endif/) { 360 if (savedepth <= 0) { 361 printf("%s: line %d: unbalanced #endif\n", \ 362 infile, NR) 363 exit 1 364 } 365 savedepth-- 366 } 367 print > sysent 368 print > sysarghdr 369 print > sysnumhdr 370 print > sysprotos 371 print > sysnamesbottom 372 373 # XXX: technically we do not want to have conditionals in rump, 374 # but it is easier to just let the cpp handle them than try to 375 # figure out what we want here in this script 376 print > rumpsysent 377 next 378 } 379 syscall != $1 { 380 printf "%s: line %d: syscall number out of sync at %d\n", \ 381 infile, NR, syscall 382 printf "line is:\n" 383 print 384 exit 1 385 } 386 function parserr(was, wanted) { 387 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 388 infile, NR, was, wanted 389 printf "line is:\n" 390 print 391 exit 1 392 } 393 function parseline() { 394 f=3 # toss number and type 395 if ($2 == "INDIR") 396 sycall_flags="SYCALL_INDIRECT" 397 else 398 sycall_flags="0" 399 if ($NF != "}") { 400 funcalias=$NF 401 end=NF-1 402 } else { 403 funcalias="" 404 end=NF 405 } 406 if ($f == "INDIR") { # allow for "NOARG INDIR" 407 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 408 f++ 409 } 410 if ($f == "MODULAR") { # registered at runtime 411 modular = 1 412 f++ 413 } else { 414 modular = 0; 415 } 416 if ($f == "RUMP") { 417 rumpable = 1 418 f++ 419 } else { 420 rumpable = 0 421 } 422 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 423 funcalias=$f 424 f++ 425 } 426 if ($f != "{") 427 parserr($f, "{") 428 f++ 429 if ($end != "}") 430 parserr($end, "}") 431 end-- 432 if ($end != ";") 433 parserr($end, ";") 434 end-- 435 if ($end != ")") 436 parserr($end, ")") 437 end-- 438 439 returntype = oldf = ""; 440 do { 441 if (returntype != "" && oldf != "*") 442 returntype = returntype" "; 443 returntype = returntype$f; 444 oldf = $f; 445 f++ 446 } while ($f != "|" && f < (end-1)) 447 if (f == (end - 1)) { 448 parserr($f, "function argument definition (maybe \"|\"?)"); 449 } 450 f++ 451 452 fprefix=$f 453 f++ 454 if ($f != "|") { 455 parserr($f, "function compat delimiter (maybe \"|\"?)"); 456 } 457 f++ 458 459 fcompat="" 460 if ($f != "|") { 461 fcompat=$f 462 f++ 463 } 464 465 if ($f != "|") { 466 parserr($f, "function name delimiter (maybe \"|\"?)"); 467 } 468 f++ 469 fbase=$f 470 471 # pipe is special in how to returns its values. 472 # So just generate it manually if present. 473 if (rumpable == 1 && fbase == "pipe") { 474 rumpable = 0; 475 rumphaspipe = 1; 476 } 477 478 if (fcompat != "") { 479 funcname=fprefix "___" fbase "" fcompat 480 } else { 481 funcname=fprefix "_" fbase 482 } 483 if (returntype == "quad_t" || returntype == "off_t") { 484 if (sycall_flags == "0") 485 sycall_flags = "SYCALL_RET_64"; 486 else 487 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 488 } 489 490 if (funcalias == "") { 491 funcalias=funcname 492 sub(/^([^_]+_)*sys_/, "", funcalias) 493 realname=fbase 494 } else { 495 realname=funcalias 496 } 497 rumpfname=realname "" fcompat 498 f++ 499 500 if ($f != "(") 501 parserr($f, "(") 502 f++ 503 504 argc=0; 505 argalign=0; 506 if (f == end) { 507 if ($f != "void") 508 parserr($f, "argument definition") 509 isvarargs = 0; 510 varargc = 0; 511 argtype[0]="void"; 512 return 513 } 514 515 # some system calls (open() and fcntl()) can accept a variable 516 # number of arguments. If syscalls accept a variable number of 517 # arguments, they must still have arguments specified for 518 # the remaining argument "positions," because of the way the 519 # kernel system call argument handling works. 520 # 521 # Indirect system calls, e.g. syscall(), are exceptions to this 522 # rule, since they are handled entirely by machine-dependent code 523 # and do not need argument structures built. 524 525 isvarargs = 0; 526 args64 = 0; 527 while (f <= end) { 528 if ($f == "...") { 529 f++; 530 isvarargs = 1; 531 varargc = argc; 532 continue; 533 } 534 argc++ 535 argtype[argc]="" 536 oldf="" 537 while (f < end && $(f+1) != ",") { 538 if (argtype[argc] != "" && oldf != "*") 539 argtype[argc] = argtype[argc]" "; 540 argtype[argc] = argtype[argc]$f; 541 oldf = $f; 542 f++ 543 } 544 if (argtype[argc] == "") 545 parserr($f, "argument definition") 546 if (argtype[argc] == "off_t" \ 547 || argtype[argc] == "dev_t" \ 548 || argtype[argc] == "time_t") { 549 if ((argalign % 2) != 0 && sysalign && 550 funcname != "sys_posix_fadvise") # XXX for now 551 parserr($f, "a padding argument") 552 } else { 553 argalign++; 554 } 555 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 556 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 557 if (sycall_flags == "0") 558 sycall_flags = "SYCALL_ARG"argc-1"_64"; 559 else 560 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 561 args64++; 562 } 563 argname[argc]=$f; 564 f += 2; # skip name, and any comma 565 } 566 if (args64 > 0) 567 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 568 # must see another argument after varargs notice. 569 if (isvarargs) { 570 if (argc == varargc) 571 parserr($f, "argument definition") 572 } else 573 varargc = argc; 574 } 575 576 function printproto(wrap) { 577 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 578 returntype) > sysnumhdr 579 for (i = 1; i <= varargc; i++) 580 printf(" \"%s\"", argtype[i]) > sysnumhdr 581 if (isvarargs) 582 printf(" \"...\"") > sysnumhdr 583 printf(" */\n") > sysnumhdr 584 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 585 syscall) > sysnumhdr 586 587 # rumpalooza 588 if (!rumpable) 589 return 590 591 # accumulate fbases we have seen. we want the last 592 # occurence for the default __RENAME() 593 seen = funcseen[fbase] 594 funcseen[fbase] = rumpfname 595 if (seen) 596 return 597 598 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 599 600 for (i = 1; i < varargc; i++) 601 if (argname[i] != "PAD") 602 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 603 604 if (isvarargs) 605 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 606 else 607 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 608 609 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 610 printf(";\n") > rumpprotos 611 612 # generate forward-declares for types, apart from the 613 # braindead typedef jungle we cannot easily handle here 614 for (i = 1; i <= varargc; i++) { 615 type=uncompattype(argtype[i]) 616 sub("const ", "", type) 617 if (!typeseen[type] && \ 618 match(type, "struct") && match(type, "\\*")) { 619 typeseen[type] = 1 620 sub(" *\\*", "", type); 621 printf("%s;\n", type) > rumptypes 622 } 623 } 624 } 625 626 function printrumpsysent(insysent, compatwrap) { 627 if (!insysent) { 628 eno[0] = "rump_enosys" 629 eno[1] = "sys_nomodule" 630 flags[0] = "SYCALL_NOSYS" 631 flags[1] = "0" 632 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 633 "/* %d = %s */\n", \ 634 flags[modular], eno[modular], syscall, funcalias) \ 635 > rumpsysent 636 return 637 } 638 639 printf("\t{ ") > rumpsysent 640 if (argc == 0) { 641 printf("0, 0, ") > rumpsysent 642 } else { 643 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 644 } 645 646 if (compatwrap == "") { 647 if (modular) 648 rfn = "(sy_call_t *)sys_nomodule" 649 else 650 rfn = "(sy_call_t *)" funcname 651 } else { 652 rfn = "(sy_call_t *)" compatwrap "_" funcname 653 } 654 655 printf("0,\n\t %s },", rfn) > rumpsysent 656 for (i = 0; i < (33 - length(rfn)) / 8; i++) 657 printf("\t") > rumpsysent 658 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 659 } 660 661 function iscompattype(type) { 662 for (var in uncompattypes) { 663 if (match(type, var)) { 664 return 1 665 } 666 } 667 668 return 0 669 } 670 671 function uncompattype(type) { 672 for (var in uncompattypes) { 673 if (match(type, var)) { 674 sub(var, uncompattypes[var], type) 675 return type 676 } 677 } 678 679 return type 680 } 681 682 function putent(type, compatwrap) { 683 # output syscall declaration for switch table. 684 if (compatwrap == "") 685 compatwrap_ = "" 686 else 687 compatwrap_ = compatwrap "_" 688 if (argc == 0) 689 arg_type = "void"; 690 else { 691 arg_type = "struct " compatwrap_ funcname "_args"; 692 } 693 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 694 arg_type " *, register_t *);\n" 695 if (sysmap[proto] != 1) { 696 sysmap[proto] = 1; 697 print proto > sysprotos; 698 } 699 700 # output syscall switch entry 701 printf("\t{ ") > sysent 702 if (argc == 0) { 703 printf("0, 0, ") > sysent 704 } else { 705 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 706 } 707 if (modular) 708 wfn = "(sy_call_t *)sys_nomodule"; 709 else if (compatwrap == "") 710 wfn = "(sy_call_t *)" funcname; 711 else 712 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 713 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 714 for (i = 0; i < (33 - length(wfn)) / 8; i++) 715 printf("\t") > sysent 716 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 717 718 # output syscall name for names table 719 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 720 > sysnamesbottom 721 722 # output syscall number of header, if appropriate 723 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 724 type == "NOERR") { 725 # output a prototype, to be used to generate lint stubs in 726 # libc. 727 printproto("") 728 } else if (type == "COMPAT" || type == "EXTERN") { 729 # Just define the syscall number with a comment. These 730 # may be used by compatibility stubs in libc. 731 printproto(compatwrap_) 732 } 733 734 # output syscall argument structure, if it has arguments 735 if (argc != 0) { 736 printf("\nstruct %s%s_args", compatwrap_, funcname) > sysarghdr 737 if (type != "NOARGS") { 738 print " {" >sysarghdr; 739 for (i = 1; i <= argc; i++) 740 printf("\tsyscallarg(%s) %s;\n", argtype[i], 741 argname[i]) > sysarghdr 742 printf "}" >sysarghdr; 743 } 744 printf(";\n") > sysarghdr 745 if (type != "NOARGS" && type != "INDIR") { 746 printf("check_syscall_args(%s%s)\n", compatwrap_, 747 funcname) >sysarghdr 748 } 749 } 750 751 if (!rumpable) { 752 if (funcname == "sys_pipe" && rumphaspipe == 1) 753 insysent = 1 754 else 755 insysent = 0 756 } else { 757 insysent = 1 758 } 759 printrumpsysent(insysent, compatwrap) 760 761 # output rump marshalling code if necessary 762 if (!rumpable) { 763 return 764 } 765 766 # need a local prototype, we export the re-re-named one in .h 767 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 768 > rumpcalls 769 for (i = 1; i < argc; i++) { 770 if (argname[i] != "PAD") 771 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 772 } 773 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 774 775 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 776 for (i = 1; i < argc; i++) { 777 if (argname[i] != "PAD") 778 printf("%s %s, ", uncompattype(argtype[i]), \ 779 argname[i]) > rumpcalls 780 } 781 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 782 > rumpcalls 783 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 784 if (returntype != "void") { 785 if (type != "NOERR") { 786 printf("\tint error = 0;\n") > rumpcalls 787 } 788 # assume rumpcalls return only integral types 789 printf("\t%s rv = -1;\n", returntype) > rumpcalls 790 } 791 792 argarg = "NULL" 793 argsize = 0; 794 if (argc) { 795 argarg = "&callarg" 796 argsize = "sizeof(callarg)" 797 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 798 > rumpcalls 799 for (i = 1; i <= argc; i++) { 800 if (argname[i] == "PAD") { 801 printf("\tSPARG(&callarg, %s) = 0;\n", \ 802 argname[i]) > rumpcalls 803 } else { 804 if (iscompattype(argtype[i])) { 805 printf("\tSPARG(&callarg, %s) = " \ 806 "(%s)%s;\n", argname[i], argtype[i], \ 807 argname[i]) > rumpcalls 808 } else { 809 printf("\tSPARG(&callarg, %s) = %s;\n",\ 810 argname[i], argname[i]) > rumpcalls 811 } 812 } 813 } 814 printf("\n") > rumpcalls 815 } else { 816 printf("\n") > rumpcalls 817 } 818 printf("\t") > rumpcalls 819 if (returntype != "void" && type != "NOERR") 820 printf("error = ") > rumpcalls 821 printf("rsys_syscall(%s%s%s, " \ 822 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 823 argarg, argsize) > rumpcalls 824 if (type != "NOERR") { 825 printf("\trsys_seterrno(error);\n") > rumpcalls 826 printf("\tif (error == 0) {\n") > rumpcalls 827 indent="\t\t" 828 ending="\t}\n" 829 } else { 830 indent="\t" 831 ending="" 832 } 833 if (returntype != "void") { 834 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 835 indent, returntype) > rumpcalls 836 printf("%s\trv = *(%s *)retval;\n", \ 837 indent, returntype) > rumpcalls 838 printf("%selse\n", indent, indent) > rumpcalls 839 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 840 printf("%s", ending) > rumpcalls 841 printf("\treturn rv;\n") > rumpcalls 842 } 843 printf("}\n") > rumpcalls 844 printf("rsys_alias(%s%s,rump_enosys)\n", \ 845 compatwrap_, funcname) > rumpcalls 846 847 } 848 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 849 || $2 == "NOERR" { 850 parseline() 851 putent($2, "") 852 syscall++ 853 next 854 } 855 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 856 if ($2 == "OBSOL") 857 comment="obsolete" 858 else if ($2 == "EXCL") 859 comment="excluded" 860 else if ($2 == "IGNORED") 861 comment="ignored" 862 else 863 comment="unimplemented" 864 for (i = 3; i <= NF; i++) 865 comment=comment " " $i 866 867 if ($2 == "IGNORED") 868 sys_stub = "(sy_call_t *)nullop"; 869 else 870 sys_stub = sys_nosys; 871 872 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 873 sys_stub, syscall, comment) > sysent 874 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 875 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 876 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 877 > sysnamesbottom 878 if ($2 != "UNIMPL") 879 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 880 syscall++ 881 next 882 } 883 $2 == "EXTERN" { 884 parseline() 885 putent("EXTERN", "") 886 syscall++ 887 next 888 } 889 { 890 for (i = 1; i <= ncompat; i++) { 891 if ($2 == compat_upper[i]) { 892 parseline(); 893 putent("COMPAT", compat[i]) 894 syscall++ 895 next 896 } 897 } 898 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 899 exit 1 900 } 901 END { 902 # output pipe() syscall with its special retval[2] handling 903 if (rumphaspipe) { 904 printf("int rump_sys_pipe(int *);\n") > rumpprotos 905 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 906 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 907 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 908 printf("\tint error = 0;\n") > rumpcalls 909 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 910 printf("NULL, 0, retval);\n") > rumpcalls 911 printf("\tif (error) {\n") > rumpcalls 912 printf("\t\trsys_seterrno(error);\n") > rumpcalls 913 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 914 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 915 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 916 } 917 918 # print default rump syscall interfaces 919 for (var in funcseen) { 920 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 921 toupper(var)) > rumpcallshdr 922 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 923 toupper(var), funcseen[var]) > rumpcallshdr 924 printf("#endif\n\n") > rumpcallshdr 925 } 926 927 maxsyscall = syscall 928 if (nsysent) { 929 if (syscall > nsysent) { 930 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 931 exit 1 932 } 933 while (syscall < nsysent) { 934 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 935 sys_nosys, syscall) > sysent 936 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 937 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 938 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 939 > sysnamesbottom 940 syscall++ 941 } 942 } 943 printf("};\n") > sysent 944 printf("};\n") > rumpsysent 945 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 946 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 947 printf("};\n") > sysnamesbottom 948 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 949 if (nsysent) 950 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 951 } ' 952 953 cat $sysprotos >> $sysarghdr 954 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 955 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 956 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 957 cat $sysdcl $sysent > $syssw 958 cat $sysnamesbottom >> $sysnames 959 cat $rumpsysent >> $rumpcalls 960 961 touch $rumptypes 962 cat $rumptypes >> $rumpcallshdr 963 echo >> $rumpcallshdr 964 cat $rumpprotos >> $rumpcallshdr 965 966 #chmod 444 $sysnames $sysnumhdr $syssw 967
Indexes created Sun Oct 12 02:09:55 GMT 2025