makesyscalls.sh revision 1.108.2.1
1 #! /bin/sh - 2 # $NetBSD: makesyscalls.sh,v 1.108.2.1 2011/06/06 09:09:33 jruoho 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\n" > rumpcallshdr 287 printf "#include <signal.h> /* typedefs */\n\n" > rumpcallshdr 288 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 289 290 printf "%s", sysarghdrextra > sysarghdr 291 # Write max number of system call arguments to both headers 292 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 293 > sysnumhdr 294 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 295 > sysarghdr 296 printf "#undef\tsyscallarg\n" > sysarghdr 297 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 298 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 299 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 300 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 301 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 302 > sysarghdr 303 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 304 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 305 registertype > sysarghdr 306 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 307 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 308 registertype > sysarghdr 309 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 310 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 311 printf "\t}\n" > sysarghdr 312 printf("\n#undef check_syscall_args\n") >sysarghdr 313 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 314 "\ttypedef char call##_check_args" \ 315 "[sizeof (struct call##_args) \\\n" \ 316 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 317 constprefix, registertype) >sysarghdr 318 319 # compat types from syscalls.master. this is slightly ugly, 320 # but given that we have so few compats from over 17 years, 321 # a more complicated solution is not currently warranted. 322 uncompattypes["struct timeval50"] = "struct timeval"; 323 uncompattypes["struct timespec50"] = "struct timespec"; 324 uncompattypes["struct stat30"] = "struct stat"; 325 326 next 327 } 328 NF == 0 || $1 ~ /^;/ { 329 next 330 } 331 $0 ~ /^%%$/ { 332 intable = 1 333 next 334 } 335 $1 ~ /^#[ ]*include/ { 336 print > sysdcl 337 print > sysnames 338 next 339 } 340 $1 ~ /^#/ && !intable { 341 print > sysdcl 342 print > sysnames 343 next 344 } 345 $1 ~ /^#/ && intable { 346 if ($1 ~ /^#[ ]*if/) { 347 savedepth++ 348 savesyscall[savedepth] = syscall 349 } 350 if ($1 ~ /^#[ ]*else/) { 351 if (savedepth <= 0) { 352 printf("%s: line %d: unbalanced #else\n", \ 353 infile, NR) 354 exit 1 355 } 356 syscall = savesyscall[savedepth] 357 } 358 if ($1 ~ /^#[ ]*endif/) { 359 if (savedepth <= 0) { 360 printf("%s: line %d: unbalanced #endif\n", \ 361 infile, NR) 362 exit 1 363 } 364 savedepth-- 365 } 366 print > sysent 367 print > sysarghdr 368 print > sysnumhdr 369 print > sysprotos 370 print > sysnamesbottom 371 372 # XXX: technically we do not want to have conditionals in rump, 373 # but it is easier to just let the cpp handle them than try to 374 # figure out what we want here in this script 375 print > rumpsysent 376 next 377 } 378 syscall != $1 { 379 printf "%s: line %d: syscall number out of sync at %d\n", \ 380 infile, NR, syscall 381 printf "line is:\n" 382 print 383 exit 1 384 } 385 function parserr(was, wanted) { 386 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 387 infile, NR, was, wanted 388 printf "line is:\n" 389 print 390 exit 1 391 } 392 function parseline() { 393 f=3 # toss number and type 394 if ($2 == "INDIR") 395 sycall_flags="SYCALL_INDIRECT" 396 else 397 sycall_flags="0" 398 if ($NF != "}") { 399 funcalias=$NF 400 end=NF-1 401 } else { 402 funcalias="" 403 end=NF 404 } 405 if ($f == "INDIR") { # allow for "NOARG INDIR" 406 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 407 f++ 408 } 409 if ($f == "MODULAR") { # registered at runtime 410 modular = 1 411 f++ 412 } else { 413 modular = 0; 414 } 415 if ($f == "RUMP") { 416 rumpable = 1 417 f++ 418 } else { 419 rumpable = 0 420 } 421 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 422 funcalias=$f 423 f++ 424 } 425 if ($f != "{") 426 parserr($f, "{") 427 f++ 428 if ($end != "}") 429 parserr($end, "}") 430 end-- 431 if ($end != ";") 432 parserr($end, ";") 433 end-- 434 if ($end != ")") 435 parserr($end, ")") 436 end-- 437 438 returntype = oldf = ""; 439 do { 440 if (returntype != "" && oldf != "*") 441 returntype = returntype" "; 442 returntype = returntype$f; 443 oldf = $f; 444 f++ 445 } while ($f != "|" && f < (end-1)) 446 if (f == (end - 1)) { 447 parserr($f, "function argument definition (maybe \"|\"?)"); 448 } 449 f++ 450 451 fprefix=$f 452 f++ 453 if ($f != "|") { 454 parserr($f, "function compat delimiter (maybe \"|\"?)"); 455 } 456 f++ 457 458 fcompat="" 459 if ($f != "|") { 460 fcompat=$f 461 f++ 462 } 463 464 if ($f != "|") { 465 parserr($f, "function name delimiter (maybe \"|\"?)"); 466 } 467 f++ 468 fbase=$f 469 470 # pipe is special in how to returns its values. 471 # So just generate it manually if present. 472 if (rumpable == 1 && fbase == "pipe") { 473 rumpable = 0; 474 rumphaspipe = 1; 475 } 476 477 if (fcompat != "") { 478 funcname=fprefix "___" fbase "" fcompat 479 } else { 480 funcname=fprefix "_" fbase 481 } 482 if (returntype == "quad_t" || returntype == "off_t") { 483 if (sycall_flags == "0") 484 sycall_flags = "SYCALL_RET_64"; 485 else 486 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 487 } 488 489 if (funcalias == "") { 490 funcalias=funcname 491 sub(/^([^_]+_)*sys_/, "", funcalias) 492 realname=fbase 493 } else { 494 realname=funcalias 495 } 496 rumpfname=realname "" fcompat 497 f++ 498 499 if ($f != "(") 500 parserr($f, "(") 501 f++ 502 503 argc=0; 504 argalign=0; 505 if (f == end) { 506 if ($f != "void") 507 parserr($f, "argument definition") 508 isvarargs = 0; 509 varargc = 0; 510 argtype[0]="void"; 511 return 512 } 513 514 # some system calls (open() and fcntl()) can accept a variable 515 # number of arguments. If syscalls accept a variable number of 516 # arguments, they must still have arguments specified for 517 # the remaining argument "positions," because of the way the 518 # kernel system call argument handling works. 519 # 520 # Indirect system calls, e.g. syscall(), are exceptions to this 521 # rule, since they are handled entirely by machine-dependent code 522 # and do not need argument structures built. 523 524 isvarargs = 0; 525 args64 = 0; 526 while (f <= end) { 527 if ($f == "...") { 528 f++; 529 isvarargs = 1; 530 varargc = argc; 531 continue; 532 } 533 argc++ 534 argtype[argc]="" 535 oldf="" 536 while (f < end && $(f+1) != ",") { 537 if (argtype[argc] != "" && oldf != "*") 538 argtype[argc] = argtype[argc]" "; 539 argtype[argc] = argtype[argc]$f; 540 oldf = $f; 541 f++ 542 } 543 if (argtype[argc] == "") 544 parserr($f, "argument definition") 545 if (argtype[argc] == "off_t" \ 546 || argtype[argc] == "dev_t" \ 547 || argtype[argc] == "time_t") { 548 if ((argalign % 2) != 0 && sysalign && 549 funcname != "sys_posix_fadvise") # XXX for now 550 parserr($f, "a padding argument") 551 } else { 552 argalign++; 553 } 554 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 555 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 556 if (sycall_flags == "0") 557 sycall_flags = "SYCALL_ARG"argc-1"_64"; 558 else 559 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 560 args64++; 561 } 562 argname[argc]=$f; 563 f += 2; # skip name, and any comma 564 } 565 if (args64 > 0) 566 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 567 # must see another argument after varargs notice. 568 if (isvarargs) { 569 if (argc == varargc) 570 parserr($f, "argument definition") 571 } else 572 varargc = argc; 573 } 574 575 function printproto(wrap) { 576 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 577 returntype) > sysnumhdr 578 for (i = 1; i <= varargc; i++) 579 printf(" \"%s\"", argtype[i]) > sysnumhdr 580 if (isvarargs) 581 printf(" \"...\"") > sysnumhdr 582 printf(" */\n") > sysnumhdr 583 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 584 syscall) > sysnumhdr 585 586 # rumpalooza 587 if (!rumpable) 588 return 589 590 # accumulate fbases we have seen. we want the last 591 # occurence for the default __RENAME() 592 seen = funcseen[fbase] 593 funcseen[fbase] = rumpfname 594 if (seen) 595 return 596 597 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 598 599 for (i = 1; i < varargc; i++) 600 if (argname[i] != "PAD") 601 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 602 603 if (isvarargs) 604 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 605 else 606 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 607 608 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 609 printf(";\n") > rumpprotos 610 611 # generate forward-declares for types, apart from the 612 # braindead typedef jungle we cannot easily handle here 613 for (i = 1; i <= varargc; i++) { 614 type=uncompattype(argtype[i]) 615 sub("const ", "", type) 616 if (!typeseen[type] && \ 617 match(type, "struct") && match(type, "\\*")) { 618 typeseen[type] = 1 619 sub(" *\\*", "", type); 620 printf("%s;\n", type) > rumptypes 621 } 622 } 623 } 624 625 function printrumpsysent(insysent, compatwrap) { 626 if (!insysent) { 627 eno[0] = "rump_enosys" 628 eno[1] = "sys_nomodule" 629 flags[0] = "SYCALL_NOSYS" 630 flags[1] = "0" 631 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 632 "/* %d = %s */\n", \ 633 flags[modular], eno[modular], syscall, funcalias) \ 634 > rumpsysent 635 return 636 } 637 638 printf("\t{ ") > rumpsysent 639 if (argc == 0) { 640 printf("0, 0, ") > rumpsysent 641 } else { 642 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 643 } 644 645 if (compatwrap == "") { 646 if (modular) 647 rfn = "(sy_call_t *)sys_nomodule" 648 else 649 rfn = "(sy_call_t *)" funcname 650 } else { 651 rfn = "(sy_call_t *)" compatwrap "_" funcname 652 } 653 654 printf("0,\n\t %s },", rfn) > rumpsysent 655 for (i = 0; i < (33 - length(rfn)) / 8; i++) 656 printf("\t") > rumpsysent 657 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 658 } 659 660 function iscompattype(type) { 661 for (var in uncompattypes) { 662 if (match(type, var)) { 663 return 1 664 } 665 } 666 667 return 0 668 } 669 670 function uncompattype(type) { 671 for (var in uncompattypes) { 672 if (match(type, var)) { 673 sub(var, uncompattypes[var], type) 674 return type 675 } 676 } 677 678 return type 679 } 680 681 function putent(type, compatwrap) { 682 # output syscall declaration for switch table. 683 if (compatwrap == "") 684 compatwrap_ = "" 685 else 686 compatwrap_ = compatwrap "_" 687 if (argc == 0) 688 arg_type = "void"; 689 else { 690 arg_type = "struct " compatwrap_ funcname "_args"; 691 } 692 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 693 arg_type " *, register_t *);\n" 694 if (sysmap[proto] != 1) { 695 sysmap[proto] = 1; 696 print proto > sysprotos; 697 } 698 699 # output syscall switch entry 700 printf("\t{ ") > sysent 701 if (argc == 0) { 702 printf("0, 0, ") > sysent 703 } else { 704 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 705 } 706 if (modular) 707 wfn = "(sy_call_t *)sys_nomodule"; 708 else if (compatwrap == "") 709 wfn = "(sy_call_t *)" funcname; 710 else 711 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 712 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 713 for (i = 0; i < (33 - length(wfn)) / 8; i++) 714 printf("\t") > sysent 715 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 716 717 # output syscall name for names table 718 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 719 > sysnamesbottom 720 721 # output syscall number of header, if appropriate 722 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 723 type == "NOERR") { 724 # output a prototype, to be used to generate lint stubs in 725 # libc. 726 printproto("") 727 } else if (type == "COMPAT") { 728 # Just define the syscall number with a comment. These 729 # may be used by compatibility stubs in libc. 730 printproto(compatwrap_) 731 } 732 733 # output syscall argument structure, if it has arguments 734 if (argc != 0) { 735 printf("\nstruct %s%s_args", compatwrap_, funcname) > sysarghdr 736 if (type != "NOARGS") { 737 print " {" >sysarghdr; 738 for (i = 1; i <= argc; i++) 739 printf("\tsyscallarg(%s) %s;\n", argtype[i], 740 argname[i]) > sysarghdr 741 printf "}" >sysarghdr; 742 } 743 printf(";\n") > sysarghdr 744 if (type != "NOARGS" && type != "INDIR") { 745 printf("check_syscall_args(%s%s)\n", compatwrap_, 746 funcname) >sysarghdr 747 } 748 } 749 750 if (!rumpable) { 751 if (funcname == "sys_pipe" && rumphaspipe == 1) 752 insysent = 1 753 else 754 insysent = 0 755 } else { 756 insysent = 1 757 } 758 printrumpsysent(insysent, compatwrap) 759 760 # output rump marshalling code if necessary 761 if (!rumpable) { 762 return 763 } 764 765 # need a local prototype, we export the re-re-named one in .h 766 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 767 > rumpcalls 768 for (i = 1; i < argc; i++) { 769 if (argname[i] != "PAD") 770 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 771 } 772 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 773 774 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 775 for (i = 1; i < argc; i++) { 776 if (argname[i] != "PAD") 777 printf("%s %s, ", uncompattype(argtype[i]), \ 778 argname[i]) > rumpcalls 779 } 780 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 781 > rumpcalls 782 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 783 if (returntype != "void") { 784 if (type != "NOERR") { 785 printf("\tint error = 0;\n") > rumpcalls 786 } 787 # assume rumpcalls return only integral types 788 printf("\t%s rv = -1;\n", returntype) > rumpcalls 789 } 790 791 argarg = "NULL" 792 argsize = 0; 793 if (argc) { 794 argarg = "&callarg" 795 argsize = "sizeof(callarg)" 796 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 797 > rumpcalls 798 for (i = 1; i <= argc; i++) { 799 if (argname[i] == "PAD") { 800 printf("\tSPARG(&callarg, %s) = 0;\n", \ 801 argname[i]) > rumpcalls 802 } else { 803 if (iscompattype(argtype[i])) { 804 printf("\tSPARG(&callarg, %s) = " \ 805 "(%s)%s;\n", argname[i], argtype[i], \ 806 argname[i]) > rumpcalls 807 } else { 808 printf("\tSPARG(&callarg, %s) = %s;\n",\ 809 argname[i], argname[i]) > rumpcalls 810 } 811 } 812 } 813 printf("\n") > rumpcalls 814 } else { 815 printf("\n") > rumpcalls 816 } 817 printf("\t") > rumpcalls 818 if (returntype != "void" && type != "NOERR") 819 printf("error = ") > rumpcalls 820 printf("rsys_syscall(%s%s%s, " \ 821 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 822 argarg, argsize) > rumpcalls 823 if (type != "NOERR") { 824 printf("\trsys_seterrno(error);\n") > rumpcalls 825 printf("\tif (error == 0) {\n") > rumpcalls 826 indent="\t\t" 827 ending="\t}\n" 828 } else { 829 indent="\t" 830 ending="" 831 } 832 if (returntype != "void") { 833 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 834 indent, returntype) > rumpcalls 835 printf("%s\trv = *(%s *)retval;\n", \ 836 indent, returntype) > rumpcalls 837 printf("%selse\n", indent, indent) > rumpcalls 838 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 839 printf("%s", ending) > rumpcalls 840 printf("\treturn rv;\n") > rumpcalls 841 } 842 printf("}\n") > rumpcalls 843 printf("rsys_alias(%s%s,rump_enosys)\n", \ 844 compatwrap_, funcname) > rumpcalls 845 846 } 847 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 848 || $2 == "NOERR" { 849 parseline() 850 putent($2, "") 851 syscall++ 852 next 853 } 854 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 855 if ($2 == "OBSOL") 856 comment="obsolete" 857 else if ($2 == "EXCL") 858 comment="excluded" 859 else if ($2 == "IGNORED") 860 comment="ignored" 861 else 862 comment="unimplemented" 863 for (i = 3; i <= NF; i++) 864 comment=comment " " $i 865 866 if ($2 == "IGNORED") 867 sys_stub = "(sy_call_t *)nullop"; 868 else 869 sys_stub = sys_nosys; 870 871 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 872 sys_stub, syscall, comment) > sysent 873 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 874 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 875 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 876 > sysnamesbottom 877 if ($2 != "UNIMPL") 878 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 879 syscall++ 880 next 881 } 882 { 883 for (i = 1; i <= ncompat; i++) { 884 if ($2 == compat_upper[i]) { 885 parseline(); 886 putent("COMPAT", compat[i]) 887 syscall++ 888 next 889 } 890 } 891 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 892 exit 1 893 } 894 END { 895 # output pipe() syscall with its special retval[2] handling 896 if (rumphaspipe) { 897 printf("int rump_sys_pipe(int *);\n") > rumpprotos 898 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 899 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 900 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 901 printf("\tint error = 0;\n") > rumpcalls 902 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 903 printf("NULL, 0, retval);\n") > rumpcalls 904 printf("\tif (error) {\n") > rumpcalls 905 printf("\t\trsys_seterrno(error);\n") > rumpcalls 906 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 907 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 908 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 909 } 910 911 # print default rump syscall interfaces 912 for (var in funcseen) { 913 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 914 toupper(var)) > rumpcallshdr 915 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 916 toupper(var), funcseen[var]) > rumpcallshdr 917 printf("#endif\n\n") > rumpcallshdr 918 } 919 920 maxsyscall = syscall 921 if (nsysent) { 922 if (syscall > nsysent) { 923 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 924 exit 1 925 } 926 while (syscall < nsysent) { 927 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 928 sys_nosys, syscall) > sysent 929 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 930 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 931 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 932 > sysnamesbottom 933 syscall++ 934 } 935 } 936 printf("};\n") > sysent 937 printf("};\n") > rumpsysent 938 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 939 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 940 printf("};\n") > sysnamesbottom 941 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 942 if (nsysent) 943 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 944 } ' 945 946 cat $sysprotos >> $sysarghdr 947 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 948 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 949 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 950 cat $sysdcl $sysent > $syssw 951 cat $sysnamesbottom >> $sysnames 952 cat $rumpsysent >> $rumpcalls 953 954 touch $rumptypes 955 cat $rumptypes >> $rumpcallshdr 956 echo >> $rumpcallshdr 957 cat $rumpprotos >> $rumpcallshdr 958 959 #chmod 444 $sysnames $sysnumhdr $syssw 960
Indexes created Sun Oct 12 09:09:55 GMT 2025