makesyscalls.sh revision 1.139.2.1
1 # $NetBSD: makesyscalls.sh,v 1.139.2.1 2014/08/10 06:55:58 tls Exp $ 2 # 3 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou 4 # All rights reserved. 5 # 6 # Redistribution and use in source and binary forms, with or without 7 # modification, are permitted provided that the following conditions 8 # are met: 9 # 1. Redistributions of source code must retain the above copyright 10 # notice, this list of conditions and the following disclaimer. 11 # 2. Redistributions in binary form must reproduce the above copyright 12 # notice, this list of conditions and the following disclaimer in the 13 # documentation and/or other materials provided with the distribution. 14 # 3. All advertising materials mentioning features or use of this software 15 # must display the following acknowledgement: 16 # This product includes software developed for the NetBSD Project 17 # by Christopher G. Demetriou. 18 # 4. The name of the author may not be used to endorse or promote products 19 # derived from this software without specific prior written permission 20 # 21 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 32 # @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93 33 34 set -e 35 36 case $# in 37 2) ;; 38 *) echo "Usage: $0 config-file input-file" 1>&2 39 exit 1 40 ;; 41 esac 42 43 # the config file sets the following variables: 44 # sysalign check for alignment of off_t/dev_t/time_t 45 # sysnames the syscall names file 46 # sysnumhdr the syscall numbers file 47 # syssw the syscall switch file 48 # sysarghdr the syscall argument struct definitions 49 # compatopts those syscall types that are for 'compat' syscalls 50 # switchname the name for the 'struct sysent' we define 51 # namesname the name for the 'const char *[]' we define 52 # constprefix the prefix for the system call constants 53 # registertype the type for register_t 54 # nsysent the size of the sysent table 55 # sys_nosys [optional] name of function called for unsupported 56 # syscalls, if not sys_nosys() 57 # maxsysargs [optiona] the maximum number or arguments 58 # 59 # NOTE THAT THIS makesyscalls.sh DOES NOT SUPPORT 'SYSLIBCOMPAT'. 60 61 # source the config file. 62 sys_nosys="sys_nosys" # default is sys_nosys(), if not specified otherwise 63 maxsysargs=8 # default limit is 8 (32bit) arguments 64 rumpcalls="/dev/null" 65 rumpcallshdr="/dev/null" 66 rumpsysmap="/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 = \"$rumpsysent\" 143 rumpsysmap = \"$rumpsysmap\" 144 switchname = \"$switchname\" 145 namesname = \"$namesname\" 146 constprefix = \"$constprefix\" 147 registertype = \"$registertype\" 148 sysalign=\"$sysalign\" 149 if (!registertype) { 150 registertype = \"register_t\" 151 } 152 nsysent = \"$nsysent\" 153 154 sysdcl = \"$sysdcl\" 155 syscompat_pref = \"$syscompat_pref\" 156 sysent = \"$sysent\" 157 sysnamesbottom = \"$sysnamesbottom\" 158 rumpprotos = \"$rumpprotos\" 159 rumptypes = \"$rumptypes\" 160 sys_nosys = \"$sys_nosys\" 161 maxsysargs = \"$maxsysargs\" 162 infile = \"$2\" 163 164 compatopts = \"$compatopts\" 165 "' 166 167 if (rumpcalls != "/dev/null") 168 haverumpcalls = 1 169 170 printf "/* %s */\n\n", tag > sysdcl 171 printf "/*\n * System call switch table.\n *\n" > sysdcl 172 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 173 174 ncompat = split(compatopts,compat) 175 for (i = 1; i <= ncompat; i++) { 176 compat_upper[i] = toupper(compat[i]) 177 178 printf "\n#ifdef %s\n", compat_upper[i] > sysent 179 printf "#define %s(func) __CONCAT(%s_,func)\n", compat[i], \ 180 compat[i] > sysent 181 printf "#else\n" > sysent 182 printf "#define %s(func) %s\n", compat[i], sys_nosys > sysent 183 printf "#endif\n" > sysent 184 } 185 186 printf "\n#define\ts(type)\tsizeof(type)\n" > sysent 187 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > sysent 188 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > sysent 189 printf "struct sysent %s[] = {\n",switchname > sysent 190 191 printf "/* %s */\n\n", tag > sysnames 192 printf "/*\n * System call names.\n *\n" > sysnames 193 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 194 195 printf "\n/*\n * System call prototypes.\n */\n\n" > sysprotos 196 if (haverumpcalls) 197 printf("#ifndef RUMP_CLIENT\n") > sysprotos 198 199 printf "/* %s */\n\n", tag > sysnumhdr 200 printf "/*\n * System call numbers.\n *\n" > sysnumhdr 201 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnumhdr 202 203 printf "/* %s */\n\n", tag > sysarghdr 204 printf "/*\n * System call argument lists.\n *\n" > sysarghdr 205 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarghdr 206 207 printf "/* %s */\n\n", tag > rumpcalls 208 printf "/*\n * System call vector and marshalling for rump.\n *\n" > rumpcalls 209 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcalls 210 211 printf "/* %s */\n\n", tag > rumpcallshdr 212 printf "/*\n * System call protos in rump namespace.\n *\n" > rumpcallshdr 213 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcallshdr 214 } 215 NR == 1 { 216 sub(/ $/, "") 217 printf " * created from%s\n */\n\n", $0 > sysdcl 218 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysdcl 219 220 printf " * created from%s\n */\n\n", $0 > sysnames 221 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysnames 222 223 printf " * created from%s\n */\n\n", $0 > rumpcalls 224 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 225 printf "#include <rump/rumpuser_port.h>\n" > rumpcalls 226 printf "#endif /* RUMP_CLIENT */\n\n" > rumpcalls 227 printf "#include <sys/param.h>\n\n" > rumpcalls 228 printf "#ifdef __NetBSD__\n" > rumpcalls 229 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > rumpcalls 230 231 printf "#include <sys/fstypes.h>\n" > rumpcalls 232 printf "#include <sys/proc.h>\n" > rumpcalls 233 printf "#endif /* __NetBSD__ */\n\n" > rumpcalls 234 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 235 printf "#include <errno.h>\n" > rumpcalls 236 printf "#include <stdint.h>\n" > rumpcalls 237 printf "#include <stdlib.h>\n" > rumpcalls 238 printf "#include <string.h>\n\n" > rumpcalls 239 printf "#include <srcsys/syscall.h>\n" > rumpcalls 240 printf "#include <srcsys/syscallargs.h>\n\n" > rumpcalls 241 printf "#include <rump/rumpclient.h>\n\n" > rumpcalls 242 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 243 printf " rumpclient_syscall(num, data, dlen, retval)\n" > rumpcalls 244 printf "#define rsys_seterrno(error) errno = error\n" > rumpcalls 245 printf "#else\n" > rumpcalls 246 printf "#include <sys/syscall.h>\n" > rumpcalls 247 printf "#include <sys/syscallargs.h>\n\n" > rumpcalls 248 printf "#include <sys/syscallvar.h>\n\n" > rumpcalls 249 printf "#include <rump/rumpuser.h>\n" > rumpcalls 250 printf "#include \"rump_private.h\"\n\n" > rumpcalls 251 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 252 printf " rump_syscall(num, data, dlen, retval)\n\n" > rumpcalls 253 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" \ 254 > rumpcalls 255 printf "#endif\n\n" > rumpcalls 256 257 printf "#ifndef RUMP_KERNEL_IS_LIBC\n" > rumpcalls 258 printf "#define RUMP_SYS_COMPAT\n" > rumpcalls 259 printf "#endif\n\n" > rumpcalls 260 261 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 262 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 263 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 264 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 265 printf "#endif\n\n" > rumpcalls 266 printf "\nvoid rumpns_sys_nomodule(void);\n" > rumpcalls 267 268 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 269 printf "int rumpns_enosys(void);\n" > rumpsysent 270 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 271 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 272 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 273 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 274 275 # System call names are included by userland (kdump(1)), so 276 # hide the include files from it. 277 printf "#if defined(_KERNEL_OPT)\n" > sysnames 278 279 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 280 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 281 282 printf " * created from%s\n */\n\n", $0 > sysnumhdr 283 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 284 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 285 286 printf " * created from%s\n */\n\n", $0 > sysarghdr 287 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 288 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 289 290 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 291 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 292 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 293 printf "#ifdef _KERNEL\n" > rumpcallshdr 294 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 295 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 296 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 297 298 printf "%s", sysarghdrextra > sysarghdr 299 # Write max number of system call arguments to both headers 300 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 301 > sysnumhdr 302 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 303 > sysarghdr 304 printf "#undef\tsyscallarg\n" > sysarghdr 305 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 306 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 307 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 308 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 309 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 310 > sysarghdr 311 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 312 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 313 registertype > sysarghdr 314 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 315 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 316 registertype > sysarghdr 317 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 318 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 319 printf "\t}\n" > sysarghdr 320 printf("\n#undef check_syscall_args\n") >sysarghdr 321 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 322 "\ttypedef char call##_check_args" \ 323 "[sizeof (struct call##_args) \\\n" \ 324 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 325 constprefix, registertype) >sysarghdr 326 327 # compat types from syscalls.master. this is slightly ugly, 328 # but given that we have so few compats from over 17 years, 329 # a more complicated solution is not currently warranted. 330 uncompattypes["struct timeval50"] = "struct timeval"; 331 uncompattypes["struct timespec50"] = "struct timespec"; 332 uncompattypes["struct stat30"] = "struct stat"; 333 334 next 335 } 336 NF == 0 || $1 ~ /^;/ { 337 next 338 } 339 $0 ~ /^%%$/ { 340 intable = 1 341 next 342 } 343 $1 ~ /^#[ ]*include/ { 344 print > sysdcl 345 print > sysnames 346 next 347 } 348 $1 ~ /^#/ && !intable { 349 print > sysdcl 350 print > sysnames 351 next 352 } 353 $1 ~ /^#/ && intable { 354 if ($1 ~ /^#[ ]*if/) { 355 savedepth++ 356 savesyscall[savedepth] = syscall 357 } 358 if ($1 ~ /^#[ ]*else/) { 359 if (savedepth <= 0) { 360 printf("%s: line %d: unbalanced #else\n", \ 361 infile, NR) 362 exit 1 363 } 364 syscall = savesyscall[savedepth] 365 } 366 if ($1 ~ /^#[ ]*endif/) { 367 if (savedepth <= 0) { 368 printf("%s: line %d: unbalanced #endif\n", \ 369 infile, NR) 370 exit 1 371 } 372 savedepth-- 373 } 374 print > sysent 375 print > sysarghdr 376 print > sysnumhdr 377 print > sysprotos 378 print > sysnamesbottom 379 380 # XXX: technically we do not want to have conditionals in rump, 381 # but it is easier to just let the cpp handle them than try to 382 # figure out what we want here in this script 383 print > rumpsysent 384 next 385 } 386 syscall != $1 { 387 printf "%s: line %d: syscall number out of sync at %d\n", \ 388 infile, NR, syscall 389 printf "line is:\n" 390 print 391 exit 1 392 } 393 function parserr(was, wanted) { 394 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 395 infile, NR, was, wanted 396 printf "line is:\n" 397 print 398 exit 1 399 } 400 function parseline() { 401 f=3 # toss number and type 402 if ($2 == "INDIR") 403 sycall_flags="SYCALL_INDIRECT" 404 else 405 sycall_flags="0" 406 if ($NF != "}") { 407 funcalias=$NF 408 end=NF-1 409 } else { 410 funcalias="" 411 end=NF 412 } 413 if ($f == "INDIR") { # allow for "NOARG INDIR" 414 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 415 f++ 416 } 417 if ($f == "MODULAR") { # registered at runtime 418 modular = 1 419 f++ 420 } else { 421 modular = 0; 422 } 423 if ($f == "RUMP") { 424 rumpable = 1 425 f++ 426 } else { 427 rumpable = 0 428 } 429 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 430 funcalias=$f 431 f++ 432 } 433 if ($f != "{") 434 parserr($f, "{") 435 f++ 436 if ($end != "}") 437 parserr($end, "}") 438 end-- 439 if ($end != ";") 440 parserr($end, ";") 441 end-- 442 if ($end != ")") 443 parserr($end, ")") 444 end-- 445 446 returntype = oldf = ""; 447 do { 448 if (returntype != "" && oldf != "*") 449 returntype = returntype" "; 450 returntype = returntype$f; 451 oldf = $f; 452 f++ 453 } while ($f != "|" && f < (end-1)) 454 if (f == (end - 1)) { 455 parserr($f, "function argument definition (maybe \"|\"?)"); 456 } 457 f++ 458 459 fprefix=$f 460 f++ 461 if ($f != "|") { 462 parserr($f, "function compat delimiter (maybe \"|\"?)"); 463 } 464 f++ 465 466 fcompat="" 467 if ($f != "|") { 468 fcompat=$f 469 f++ 470 } 471 472 if ($f != "|") { 473 parserr($f, "function name delimiter (maybe \"|\"?)"); 474 } 475 f++ 476 fbase=$f 477 478 # pipe is special in how to returns its values. 479 # So just generate it manually if present. 480 if (rumpable == 1 && fbase == "pipe") { 481 rumpable = 0; 482 rumphaspipe = 1; 483 } 484 485 if (fcompat != "") { 486 funcname=fprefix "___" fbase "" fcompat 487 } else { 488 funcname=fprefix "_" fbase 489 } 490 if (returntype == "quad_t" || returntype == "off_t") { 491 if (sycall_flags == "0") 492 sycall_flags = "SYCALL_RET_64"; 493 else 494 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 495 } 496 497 if (funcalias == "") { 498 funcalias=funcname 499 sub(/^([^_]+_)*sys_/, "", funcalias) 500 realname=fbase 501 } else { 502 realname=funcalias 503 } 504 rumpfname=realname "" fcompat 505 f++ 506 507 if ($f != "(") 508 parserr($f, "(") 509 f++ 510 511 argc=0; 512 argalign=0; 513 if (f == end) { 514 if ($f != "void") 515 parserr($f, "argument definition") 516 isvarargs = 0; 517 varargc = 0; 518 argtype[0]="void"; 519 return 520 } 521 522 # some system calls (open() and fcntl()) can accept a variable 523 # number of arguments. If syscalls accept a variable number of 524 # arguments, they must still have arguments specified for 525 # the remaining argument "positions," because of the way the 526 # kernel system call argument handling works. 527 # 528 # Indirect system calls, e.g. syscall(), are exceptions to this 529 # rule, since they are handled entirely by machine-dependent code 530 # and do not need argument structures built. 531 532 isvarargs = 0; 533 args64 = 0; 534 ptr = 0; 535 while (f <= end) { 536 if ($f == "...") { 537 f++; 538 isvarargs = 1; 539 varargc = argc; 540 continue; 541 } 542 argc++ 543 argtype[argc]="" 544 oldf="" 545 while (f < end && $(f+1) != ",") { 546 if (argtype[argc] != "" && oldf != "*") 547 argtype[argc] = argtype[argc]" "; 548 argtype[argc] = argtype[argc]$f; 549 oldf = $f; 550 f++ 551 } 552 if (argtype[argc] == "") 553 parserr($f, "argument definition") 554 if (argtype[argc] == "off_t" \ 555 || argtype[argc] == "dev_t" \ 556 || argtype[argc] == "time_t") { 557 if ((argalign % 2) != 0 && sysalign && 558 funcname != "sys_posix_fadvise") # XXX for now 559 parserr($f, "a padding argument") 560 } else { 561 argalign++; 562 } 563 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 564 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 565 if (sycall_flags == "0") 566 sycall_flags = "SYCALL_ARG"argc-1"_64"; 567 else 568 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 569 args64++; 570 } 571 if (index(argtype[argc], "*") != 0 && ptr == 0) { 572 if (sycall_flags == "0") 573 sycall_flags = "SYCALL_ARG_PTR"; 574 else 575 sycall_flags = "SYCALL_ARG_PTR | " sycall_flags; 576 ptr = 1; 577 } 578 argname[argc]=$f; 579 f += 2; # skip name, and any comma 580 } 581 if (args64 > 0) 582 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 583 # must see another argument after varargs notice. 584 if (isvarargs) { 585 if (argc == varargc) 586 parserr($f, "argument definition") 587 } else 588 varargc = argc; 589 } 590 591 function printproto(wrap) { 592 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 593 returntype) > sysnumhdr 594 for (i = 1; i <= varargc; i++) 595 printf(" \"%s\"", argtype[i]) > sysnumhdr 596 if (isvarargs) 597 printf(" \"...\"") > sysnumhdr 598 printf(" */\n") > sysnumhdr 599 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 600 syscall) > sysnumhdr 601 602 # rumpalooza 603 if (!rumpable) 604 return 605 606 # accumulate fbases we have seen. we want the last 607 # occurence for the default __RENAME() 608 seen = funcseen[fbase] 609 funcseen[fbase] = rumpfname 610 # special case for mknod as type of last argument changed from 611 # uint32_t to dev_t 612 if ((seen && fbase != "mknod") || (!seen && fbase == "mknod")) 613 return 614 615 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 616 617 for (i = 1; i < varargc; i++) 618 if (argname[i] != "PAD") 619 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 620 621 if (isvarargs) 622 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 623 else 624 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 625 626 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 627 printf(";\n") > rumpprotos 628 629 # generate forward-declares for types, apart from the 630 # braindead typedef jungle we cannot easily handle here 631 for (i = 1; i <= varargc; i++) { 632 type=uncompattype(argtype[i]) 633 sub("const ", "", type) 634 ntype=type 635 sub(" *\\*.*", "", ntype); 636 if (!typeseen[ntype] && \ 637 match(type, "struct") && match(type, "\\*")) { 638 typeseen[ntype] = 1 639 printf("%s;\n", ntype) > rumptypes 640 } 641 } 642 } 643 644 function printrumpsysent(insysent, compatwrap) { 645 if (!insysent) { 646 eno[0] = "rumpns_enosys" 647 eno[1] = "rumpns_sys_nomodule" 648 flags[0] = "SYCALL_NOSYS" 649 flags[1] = "0" 650 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 651 "/* %d = %s */\n", \ 652 flags[modular], eno[modular], syscall, funcalias) \ 653 > rumpsysent 654 return 655 } 656 657 printf("\t{ ") > rumpsysent 658 if (argc == 0) { 659 printf("0, 0, ") > rumpsysent 660 } else { 661 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 662 } 663 664 if (modular) 665 fn="(sy_call_t *)rumpns_sys_nomodule" 666 else 667 fn="(sy_call_t *)rumpns_enosys" 668 printf("0,\n\t %s },", fn) > rumpsysent 669 for (i = 0; i < (33 - length(fn)) / 8; i++) 670 printf("\t") > rumpsysent 671 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 672 } 673 674 function iscompattype(type) { 675 for (var in uncompattypes) { 676 if (match(type, var)) { 677 return 1 678 } 679 } 680 681 return 0 682 } 683 684 function uncompattype(type) { 685 for (var in uncompattypes) { 686 if (match(type, var)) { 687 sub(var, uncompattypes[var], type) 688 return type 689 } 690 } 691 692 return type 693 } 694 695 function printrumpsysmap(syscall, wfn, funcalias, rumpentry) { 696 printf("%-4d %-22s %-18s %s\n", 697 syscall, wfn, funcalias, rumpentry) > rumpsysmap 698 } 699 700 function putent(type, compatwrap) { 701 # output syscall declaration for switch table. 702 if (compatwrap == "") 703 compatwrap_ = "" 704 else 705 compatwrap_ = compatwrap "_" 706 if (argc == 0) 707 arg_type = "void"; 708 else { 709 arg_type = "struct " compatwrap_ funcname "_args"; 710 } 711 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 712 arg_type " *, register_t *);\n" 713 if (sysmap[proto] != 1) { 714 sysmap[proto] = 1; 715 print proto > sysprotos; 716 } 717 718 # output syscall switch entry 719 printf("\t{ ") > sysent 720 if (argc == 0) { 721 printf("0, 0, ") > sysent 722 } else { 723 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 724 } 725 if (modular) 726 wfn = "sys_nomodule"; 727 else if (compatwrap == "") 728 wfn = funcname; 729 else 730 wfn = compatwrap "(" funcname ")"; 731 wfn_cast="(sy_call_t *)" wfn 732 printf("%s,\n\t %s },", sycall_flags, wfn_cast) > sysent 733 for (i = 0; i < (33 - length(wfn_cast)) / 8; i++) 734 printf("\t") > sysent 735 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 736 737 # output syscall name for names table 738 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 739 > sysnamesbottom 740 741 # output syscall number of header, if appropriate 742 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 743 type == "NOERR") { 744 # output a prototype, to be used to generate lint stubs in 745 # libc. 746 printproto("") 747 } else if (type == "COMPAT" || type == "EXTERN") { 748 # Just define the syscall number with a comment. These 749 # may be used by compatibility stubs in libc. 750 printproto(compatwrap_) 751 } 752 753 # output syscall argument structure, if it has arguments 754 if (argc != 0) { 755 printf("\n") > sysarghdr 756 if (haverumpcalls && !rumpable) 757 printf("#ifndef RUMP_CLIENT\n") > sysarghdr 758 printf("struct %s%s_args", compatwrap_, funcname) > sysarghdr 759 if (type != "NOARGS") { 760 print " {" >sysarghdr; 761 for (i = 1; i <= argc; i++) 762 printf("\tsyscallarg(%s) %s;\n", argtype[i], 763 argname[i]) > sysarghdr 764 printf "}" >sysarghdr; 765 } 766 printf(";\n") > sysarghdr 767 if (type != "NOARGS" && type != "INDIR") { 768 printf("check_syscall_args(%s%s)\n", compatwrap_, 769 funcname) >sysarghdr 770 } 771 if (haverumpcalls && !rumpable) 772 printf("#endif /* !RUMP_CLIENT */\n") > sysarghdr 773 } 774 775 if (!rumpable) { 776 if (funcname == "sys_pipe" && rumphaspipe == 1) { 777 insysent = 1 778 printrumpsysmap(syscall, 779 funcname, funcalias, "rump_sys_pipe") 780 } else { 781 insysent = 0 782 } 783 } else { 784 insysent = 1 785 } 786 printrumpsysent(insysent, compatwrap) 787 788 # output rump marshalling code if necessary 789 if (!rumpable) { 790 return 791 } 792 793 printrumpsysmap(syscall, wfn, funcalias, "rump___sysimpl_" rumpfname) 794 795 printf("\n") > rumpcalls 796 797 if (compatwrap) 798 printf("#ifdef RUMP_SYS_COMPAT\n") > rumpcalls 799 800 # need a local prototype, we export the re-re-named one in .h 801 printf("%s rump___sysimpl_%s(", returntype, rumpfname) \ 802 > rumpcalls 803 for (i = 1; i < argc; i++) { 804 if (argname[i] != "PAD") 805 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 806 } 807 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 808 809 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 810 for (i = 1; i < argc; i++) { 811 if (argname[i] != "PAD") 812 printf("%s %s, ", uncompattype(argtype[i]), \ 813 argname[i]) > rumpcalls 814 } 815 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 816 > rumpcalls 817 printf("{\n\tregister_t retval[2];\n") > rumpcalls 818 if (returntype != "void") { 819 if (type != "NOERR") { 820 printf("\tint error = 0;\n") > rumpcalls 821 } 822 # assume rumpcalls return only integral types 823 printf("\t%s rv = -1;\n", returntype) > rumpcalls 824 } 825 826 argarg = "NULL" 827 argsize = 0; 828 if (argc) { 829 argarg = "&callarg" 830 argsize = "sizeof(callarg)" 831 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 832 > rumpcalls 833 printf "\tmemset(&callarg, 0, sizeof(callarg));\n" > rumpcalls 834 for (i = 1; i <= argc; i++) { 835 if (argname[i] == "PAD") { 836 printf("\tSPARG(&callarg, %s) = 0;\n", \ 837 argname[i]) > rumpcalls 838 } else { 839 if (iscompattype(argtype[i])) { 840 printf("\tSPARG(&callarg, %s) = " \ 841 "(%s)%s;\n", argname[i], argtype[i], \ 842 argname[i]) > rumpcalls 843 } else { 844 printf("\tSPARG(&callarg, %s) = %s;\n",\ 845 argname[i], argname[i]) > rumpcalls 846 } 847 } 848 } 849 printf("\n") > rumpcalls 850 } else { 851 printf("\n") > rumpcalls 852 } 853 printf("\t") > rumpcalls 854 if (returntype != "void" && type != "NOERR") 855 printf("error = ") > rumpcalls 856 printf("rsys_syscall(%s%s%s, " \ 857 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 858 argarg, argsize) > rumpcalls 859 if (type != "NOERR") { 860 printf("\trsys_seterrno(error);\n") > rumpcalls 861 printf("\tif (error == 0) {\n") > rumpcalls 862 indent="\t\t" 863 ending="\t}\n" 864 } else { 865 indent="\t" 866 ending="" 867 } 868 if (returntype != "void") { 869 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 870 indent, returntype) > rumpcalls 871 printf("%s\trv = *(%s *)retval;\n", \ 872 indent, returntype) > rumpcalls 873 printf("%selse\n", indent, indent) > rumpcalls 874 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 875 printf("%s", ending) > rumpcalls 876 printf("\treturn rv;\n") > rumpcalls 877 } 878 printf("}\n") > rumpcalls 879 880 printf("#ifdef RUMP_KERNEL_IS_LIBC\n") > rumpcalls 881 882 # create the bog-standard, non-renamed public name. 883 # this way we get e.g. select instead of just __select50 884 if (fcompat) 885 printf("__weak_alias(%s,rump___sysimpl_%s);\n", \ 886 fbase, rumpfname) > rumpcalls 887 888 printf("__weak_alias(%s,rump___sysimpl_%s);\n", \ 889 funcalias, rumpfname) > rumpcalls 890 printf("__weak_alias(_%s,rump___sysimpl_%s);\n", \ 891 funcalias, rumpfname) > rumpcalls 892 printf("__strong_alias(_sys_%s,rump___sysimpl_%s);\n", \ 893 funcalias, rumpfname) >rumpcalls 894 895 printf("#endif /* RUMP_KERNEL_IS_LIBC */\n") > rumpcalls 896 897 if (compatwrap) 898 printf("#endif /* RUMP_SYS_COMPAT */\n") > rumpcalls 899 900 } 901 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 902 || $2 == "NOERR" { 903 parseline() 904 putent($2, "") 905 syscall++ 906 next 907 } 908 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 909 if ($2 == "OBSOL") 910 comment="obsolete" 911 else if ($2 == "EXCL") 912 comment="excluded" 913 else if ($2 == "IGNORED") 914 comment="ignored" 915 else 916 comment="unimplemented" 917 for (i = 3; i <= NF; i++) 918 comment=comment " " $i 919 920 if ($2 == "IGNORED") 921 sys_stub = "(sy_call_t *)nullop"; 922 else 923 sys_stub = sys_nosys; 924 925 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 926 sys_stub, syscall, comment) > sysent 927 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 928 "(sy_call_t *)rumpns_enosys", syscall, comment) > rumpsysent 929 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 930 > sysnamesbottom 931 if ($2 != "UNIMPL") 932 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 933 syscall++ 934 next 935 } 936 $2 == "EXTERN" { 937 parseline() 938 putent("EXTERN", "") 939 syscall++ 940 next 941 } 942 { 943 for (i = 1; i <= ncompat; i++) { 944 if ($2 == compat_upper[i]) { 945 parseline(); 946 putent("COMPAT", compat[i]) 947 syscall++ 948 next 949 } 950 } 951 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 952 exit 1 953 } 954 END { 955 # output pipe() syscall with its special retval[2] handling 956 if (rumphaspipe) { 957 printf("int rump_sys_pipe(int *);\n") > rumpprotos 958 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 959 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 960 printf("\tregister_t retval[2];\n") > rumpcalls 961 printf("\tint error = 0;\n") > rumpcalls 962 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 963 printf("NULL, 0, retval);\n") > rumpcalls 964 printf("\tif (error) {\n") > rumpcalls 965 printf("\t\trsys_seterrno(error);\n") > rumpcalls 966 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 967 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 968 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 969 printf("#ifdef RUMP_KERNEL_IS_LIBC\n") > rumpcalls 970 printf("__weak_alias(pipe,rump_sys_pipe);\n") > rumpcalls 971 printf("__weak_alias(_pipe,rump_sys_pipe);\n") > rumpcalls 972 printf("__strong_alias(_sys_pipe,rump_sys_pipe);\n") > rumpcalls 973 printf("#endif\n") > rumpcalls 974 } 975 976 # print default rump syscall interfaces 977 for (var in funcseen) { 978 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 979 toupper(var)) > rumpcallshdr 980 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 981 toupper(var), funcseen[var]) > rumpcallshdr 982 printf("#endif\n\n") > rumpcallshdr 983 } 984 985 maxsyscall = syscall 986 if (nsysent) { 987 if (syscall > nsysent) { 988 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 989 exit 1 990 } 991 while (syscall < nsysent) { 992 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 993 sys_nosys, syscall) > sysent 994 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 995 "(sy_call_t *)rumpns_enosys", syscall) > rumpsysent 996 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 997 > sysnamesbottom 998 syscall++ 999 } 1000 } 1001 printf("};\n") > sysent 1002 printf("};\n") > rumpsysent 1003 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 1004 printf("__strong_alias(rumpns_sysent,rump_sysent);\n") > rumpsysent 1005 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 1006 if (haverumpcalls) 1007 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 1008 printf("};\n") > sysnamesbottom 1009 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 1010 if (nsysent) 1011 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 1012 } ' 1013 1014 cat $sysprotos >> $sysarghdr 1015 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 1016 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 1017 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 1018 cat $sysdcl $sysent > $syssw 1019 cat $sysnamesbottom >> $sysnames 1020 cat $rumpsysent >> $rumpcalls 1021 1022 touch $rumptypes 1023 cat $rumptypes >> $rumpcallshdr 1024 echo >> $rumpcallshdr 1025 cat $rumpprotos >> $rumpcallshdr 1026 1027 #chmod 444 $sysnames $sysnumhdr $syssw 1028 1029 echo Generated following files: 1030 echo $sysarghdr $sysnumhdr $syssw $sysnames $rumpcalls $rumpcallshdr $rumpsysmap 1031
Indexes created Sun Oct 12 09:09:55 GMT 2025