makesyscalls.sh revision 1.130
1 # $NetBSD: makesyscalls.sh,v 1.130 2013/09/03 19:55:13 pooka 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 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 rumpsysent="rumpsysent.tmp" 67 . ./$1 68 69 # tmp files: 70 sysdcl="sysent.dcl" 71 sysprotos="sys.protos" 72 syscompat_pref="sysent." 73 sysent="sysent.switch" 74 sysnamesbottom="sysnames.bottom" 75 rumptypes="rumphdr.types" 76 rumpprotos="rumphdr.protos" 77 78 trap "rm $sysdcl $sysprotos $sysent $sysnamesbottom $rumpsysent $rumptypes $rumpprotos" 0 79 80 # Awk program (must support nawk extensions) 81 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 82 awk=${AWK:-awk} 83 84 # Does this awk have a "toupper" function? 85 have_toupper=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 86 87 # If this awk does not define "toupper" then define our own. 88 if [ "$have_toupper" = TRUE ] ; then 89 # Used awk (GNU awk or nawk) provides it 90 toupper= 91 else 92 # Provide our own toupper() 93 toupper=' 94 function toupper(str) { 95 _toupper_cmd = "echo "str" |tr a-z A-Z" 96 _toupper_cmd | getline _toupper_str; 97 close(_toupper_cmd); 98 return _toupper_str; 99 }' 100 fi 101 102 # before handing it off to awk, make a few adjustments: 103 # (1) insert spaces around {, }, (, ), *, and commas. 104 # (2) get rid of any and all dollar signs (so that rcs id use safe) 105 # 106 # The awk script will deal with blank lines and lines that 107 # start with the comment character (';'). 108 109 sed -e ' 110 s/\$//g 111 :join 112 /\\$/{a\ 113 114 N 115 s/\\\n// 116 b join 117 } 118 2,${ 119 /^#/!s/\([{}()*,|]\)/ \1 /g 120 } 121 ' < $2 | $awk " 122 $toupper 123 BEGIN { 124 # Create a NetBSD tag that does not get expanded when checking 125 # this script out of CVS. (This part of the awk script is in a 126 # shell double-quoted string, so the backslashes are eaten by 127 # the shell.) 128 tag = \"\$\" \"NetBSD\" \"\$\" 129 130 # to allow nested #if/#else/#endif sets 131 savedepth = 0 132 # to track already processed syscalls 133 134 sysnames = \"$sysnames\" 135 sysprotos = \"$sysprotos\" 136 sysnumhdr = \"$sysnumhdr\" 137 sysarghdr = \"$sysarghdr\" 138 sysarghdrextra = \"$sysarghdrextra\" 139 rumpcalls = \"$rumpcalls\" 140 rumpcallshdr = \"$rumpcallshdr\" 141 rumpsysent = \"$rumpsysent\" 142 switchname = \"$switchname\" 143 namesname = \"$namesname\" 144 constprefix = \"$constprefix\" 145 registertype = \"$registertype\" 146 sysalign=\"$sysalign\" 147 if (!registertype) { 148 registertype = \"register_t\" 149 } 150 nsysent = \"$nsysent\" 151 152 sysdcl = \"$sysdcl\" 153 syscompat_pref = \"$syscompat_pref\" 154 sysent = \"$sysent\" 155 sysnamesbottom = \"$sysnamesbottom\" 156 rumpprotos = \"$rumpprotos\" 157 rumptypes = \"$rumptypes\" 158 sys_nosys = \"$sys_nosys\" 159 maxsysargs = \"$maxsysargs\" 160 infile = \"$2\" 161 162 compatopts = \"$compatopts\" 163 "' 164 165 if (rumpcalls != "/dev/null") 166 haverumpcalls = 1 167 168 printf "/* %s */\n\n", tag > sysdcl 169 printf "/*\n * System call switch table.\n *\n" > sysdcl 170 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 171 172 ncompat = split(compatopts,compat) 173 for (i = 1; i <= ncompat; i++) { 174 compat_upper[i] = toupper(compat[i]) 175 176 printf "\n#ifdef %s\n", compat_upper[i] > sysent 177 printf "#define %s(func) __CONCAT(%s_,func)\n", compat[i], \ 178 compat[i] > sysent 179 printf "#else\n" > sysent 180 printf "#define %s(func) %s\n", compat[i], sys_nosys > sysent 181 printf "#endif\n" > sysent 182 } 183 184 printf "\n#define\ts(type)\tsizeof(type)\n" > sysent 185 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > sysent 186 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > sysent 187 printf "struct sysent %s[] = {\n",switchname > sysent 188 189 printf "/* %s */\n\n", tag > sysnames 190 printf "/*\n * System call names.\n *\n" > sysnames 191 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 192 193 printf "\n/*\n * System call prototypes.\n */\n\n" > sysprotos 194 if (haverumpcalls) 195 printf("#ifndef RUMP_CLIENT\n") > sysprotos 196 197 printf "/* %s */\n\n", tag > sysnumhdr 198 printf "/*\n * System call numbers.\n *\n" > sysnumhdr 199 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnumhdr 200 201 printf "/* %s */\n\n", tag > sysarghdr 202 printf "/*\n * System call argument lists.\n *\n" > sysarghdr 203 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarghdr 204 205 printf "/* %s */\n\n", tag > rumpcalls 206 printf "/*\n * System call vector and marshalling for rump.\n *\n" > rumpcalls 207 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcalls 208 209 printf "/* %s */\n\n", tag > rumpcallshdr 210 printf "/*\n * System call protos in rump namespace.\n *\n" > rumpcallshdr 211 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcallshdr 212 } 213 NR == 1 { 214 sub(/ $/, "") 215 printf " * created from%s\n */\n\n", $0 > sysdcl 216 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysdcl 217 218 printf " * created from%s\n */\n\n", $0 > sysnames 219 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysnames 220 221 printf " * created from%s\n */\n\n", $0 > rumpcalls 222 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 223 printf "#include \"rumpuser_port.h\"\n" > rumpcalls 224 printf "#endif /* RUMP_CLIENT */\n\n" > rumpcalls 225 printf "#include <sys/param.h>\n\n" > rumpcalls 226 printf "#ifdef __NetBSD__\n" > rumpcalls 227 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > rumpcalls 228 229 printf "#include <sys/fstypes.h>\n" > rumpcalls 230 printf "#include <sys/proc.h>\n" > rumpcalls 231 printf "#endif /* __NetBSD__ */\n\n" > rumpcalls 232 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 233 printf "#include <errno.h>\n" > rumpcalls 234 printf "#include <stdint.h>\n" > rumpcalls 235 printf "#include <stdlib.h>\n\n" > rumpcalls 236 printf "#include <srcsys/syscall.h>\n" > rumpcalls 237 printf "#include <srcsys/syscallargs.h>\n\n" > rumpcalls 238 printf "#include <rump/rumpclient.h>\n\n" > rumpcalls 239 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 240 printf " rumpclient_syscall(num, data, dlen, retval)\n" > rumpcalls 241 printf "#define rsys_seterrno(error) errno = error\n" > rumpcalls 242 printf "#define rsys_alias(a,b)\n#else\n" > rumpcalls 243 printf "#include <sys/syscall.h>\n" > rumpcalls 244 printf "#include <sys/syscallargs.h>\n\n" > rumpcalls 245 printf "#include <sys/syscallvar.h>\n\n" > rumpcalls 246 printf "#include <rump/rumpuser.h>\n" > rumpcalls 247 printf "#include \"rump_private.h\"\n\n" > rumpcalls 248 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 249 printf " rump_syscall(num, data, dlen, retval)\n\n" > rumpcalls 250 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 251 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 252 253 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 254 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 255 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 256 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 257 printf "#endif\n\n" > rumpcalls 258 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 259 printf "int rump_enosys(void);\n" > rumpcalls 260 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 261 printf "#endif\n" > rumpcalls 262 263 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 264 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 265 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 266 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 267 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 268 269 # System call names are included by userland (kdump(1)), so 270 # hide the include files from it. 271 printf "#if defined(_KERNEL_OPT)\n" > sysnames 272 273 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 274 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 275 276 printf " * created from%s\n */\n\n", $0 > sysnumhdr 277 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 278 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 279 280 printf " * created from%s\n */\n\n", $0 > sysarghdr 281 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 282 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 283 284 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 285 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 286 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 287 printf "#ifdef _KERNEL\n" > rumpcallshdr 288 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 289 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 290 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 291 292 printf "%s", sysarghdrextra > sysarghdr 293 # Write max number of system call arguments to both headers 294 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 295 > sysnumhdr 296 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 297 > sysarghdr 298 printf "#undef\tsyscallarg\n" > sysarghdr 299 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 300 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 301 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 302 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 303 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 304 > sysarghdr 305 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 306 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 307 registertype > sysarghdr 308 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 309 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 310 registertype > sysarghdr 311 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 312 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 313 printf "\t}\n" > sysarghdr 314 printf("\n#undef check_syscall_args\n") >sysarghdr 315 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 316 "\ttypedef char call##_check_args" \ 317 "[sizeof (struct call##_args) \\\n" \ 318 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 319 constprefix, registertype) >sysarghdr 320 321 # compat types from syscalls.master. this is slightly ugly, 322 # but given that we have so few compats from over 17 years, 323 # a more complicated solution is not currently warranted. 324 uncompattypes["struct timeval50"] = "struct timeval"; 325 uncompattypes["struct timespec50"] = "struct timespec"; 326 uncompattypes["struct stat30"] = "struct stat"; 327 328 next 329 } 330 NF == 0 || $1 ~ /^;/ { 331 next 332 } 333 $0 ~ /^%%$/ { 334 intable = 1 335 next 336 } 337 $1 ~ /^#[ ]*include/ { 338 print > sysdcl 339 print > sysnames 340 next 341 } 342 $1 ~ /^#/ && !intable { 343 print > sysdcl 344 print > sysnames 345 next 346 } 347 $1 ~ /^#/ && intable { 348 if ($1 ~ /^#[ ]*if/) { 349 savedepth++ 350 savesyscall[savedepth] = syscall 351 } 352 if ($1 ~ /^#[ ]*else/) { 353 if (savedepth <= 0) { 354 printf("%s: line %d: unbalanced #else\n", \ 355 infile, NR) 356 exit 1 357 } 358 syscall = savesyscall[savedepth] 359 } 360 if ($1 ~ /^#[ ]*endif/) { 361 if (savedepth <= 0) { 362 printf("%s: line %d: unbalanced #endif\n", \ 363 infile, NR) 364 exit 1 365 } 366 savedepth-- 367 } 368 print > sysent 369 print > sysarghdr 370 print > sysnumhdr 371 print > sysprotos 372 print > sysnamesbottom 373 374 # XXX: technically we do not want to have conditionals in rump, 375 # but it is easier to just let the cpp handle them than try to 376 # figure out what we want here in this script 377 print > rumpsysent 378 next 379 } 380 syscall != $1 { 381 printf "%s: line %d: syscall number out of sync at %d\n", \ 382 infile, NR, syscall 383 printf "line is:\n" 384 print 385 exit 1 386 } 387 function parserr(was, wanted) { 388 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 389 infile, NR, was, wanted 390 printf "line is:\n" 391 print 392 exit 1 393 } 394 function parseline() { 395 f=3 # toss number and type 396 if ($2 == "INDIR") 397 sycall_flags="SYCALL_INDIRECT" 398 else 399 sycall_flags="0" 400 if ($NF != "}") { 401 funcalias=$NF 402 end=NF-1 403 } else { 404 funcalias="" 405 end=NF 406 } 407 if ($f == "INDIR") { # allow for "NOARG INDIR" 408 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 409 f++ 410 } 411 if ($f == "MODULAR") { # registered at runtime 412 modular = 1 413 f++ 414 } else { 415 modular = 0; 416 } 417 if ($f == "RUMP") { 418 rumpable = 1 419 f++ 420 } else { 421 rumpable = 0 422 } 423 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 424 funcalias=$f 425 f++ 426 } 427 if ($f != "{") 428 parserr($f, "{") 429 f++ 430 if ($end != "}") 431 parserr($end, "}") 432 end-- 433 if ($end != ";") 434 parserr($end, ";") 435 end-- 436 if ($end != ")") 437 parserr($end, ")") 438 end-- 439 440 returntype = oldf = ""; 441 do { 442 if (returntype != "" && oldf != "*") 443 returntype = returntype" "; 444 returntype = returntype$f; 445 oldf = $f; 446 f++ 447 } while ($f != "|" && f < (end-1)) 448 if (f == (end - 1)) { 449 parserr($f, "function argument definition (maybe \"|\"?)"); 450 } 451 f++ 452 453 fprefix=$f 454 f++ 455 if ($f != "|") { 456 parserr($f, "function compat delimiter (maybe \"|\"?)"); 457 } 458 f++ 459 460 fcompat="" 461 if ($f != "|") { 462 fcompat=$f 463 f++ 464 } 465 466 if ($f != "|") { 467 parserr($f, "function name delimiter (maybe \"|\"?)"); 468 } 469 f++ 470 fbase=$f 471 472 # pipe is special in how to returns its values. 473 # So just generate it manually if present. 474 if (rumpable == 1 && fbase == "pipe") { 475 rumpable = 0; 476 rumphaspipe = 1; 477 } 478 479 if (fcompat != "") { 480 funcname=fprefix "___" fbase "" fcompat 481 } else { 482 funcname=fprefix "_" fbase 483 } 484 if (returntype == "quad_t" || returntype == "off_t") { 485 if (sycall_flags == "0") 486 sycall_flags = "SYCALL_RET_64"; 487 else 488 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 489 } 490 491 if (funcalias == "") { 492 funcalias=funcname 493 sub(/^([^_]+_)*sys_/, "", funcalias) 494 realname=fbase 495 } else { 496 realname=funcalias 497 } 498 rumpfname=realname "" fcompat 499 f++ 500 501 if ($f != "(") 502 parserr($f, "(") 503 f++ 504 505 argc=0; 506 argalign=0; 507 if (f == end) { 508 if ($f != "void") 509 parserr($f, "argument definition") 510 isvarargs = 0; 511 varargc = 0; 512 argtype[0]="void"; 513 return 514 } 515 516 # some system calls (open() and fcntl()) can accept a variable 517 # number of arguments. If syscalls accept a variable number of 518 # arguments, they must still have arguments specified for 519 # the remaining argument "positions," because of the way the 520 # kernel system call argument handling works. 521 # 522 # Indirect system calls, e.g. syscall(), are exceptions to this 523 # rule, since they are handled entirely by machine-dependent code 524 # and do not need argument structures built. 525 526 isvarargs = 0; 527 args64 = 0; 528 ptr = 0; 529 while (f <= end) { 530 if ($f == "...") { 531 f++; 532 isvarargs = 1; 533 varargc = argc; 534 continue; 535 } 536 argc++ 537 argtype[argc]="" 538 oldf="" 539 while (f < end && $(f+1) != ",") { 540 if (argtype[argc] != "" && oldf != "*") 541 argtype[argc] = argtype[argc]" "; 542 argtype[argc] = argtype[argc]$f; 543 oldf = $f; 544 f++ 545 } 546 if (argtype[argc] == "") 547 parserr($f, "argument definition") 548 if (argtype[argc] == "off_t" \ 549 || argtype[argc] == "dev_t" \ 550 || argtype[argc] == "time_t") { 551 if ((argalign % 2) != 0 && sysalign && 552 funcname != "sys_posix_fadvise") # XXX for now 553 parserr($f, "a padding argument") 554 } else { 555 argalign++; 556 } 557 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 558 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 559 if (sycall_flags == "0") 560 sycall_flags = "SYCALL_ARG"argc-1"_64"; 561 else 562 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 563 args64++; 564 } 565 if (index(argtype[argc], "*") != 0 && ptr == 0) { 566 if (sycall_flags == "0") 567 sycall_flags = "SYCALL_ARG_PTR"; 568 else 569 sycall_flags = "SYCALL_ARG_PTR | " sycall_flags; 570 ptr = 1; 571 } 572 argname[argc]=$f; 573 f += 2; # skip name, and any comma 574 } 575 if (args64 > 0) 576 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 577 # must see another argument after varargs notice. 578 if (isvarargs) { 579 if (argc == varargc) 580 parserr($f, "argument definition") 581 } else 582 varargc = argc; 583 } 584 585 function printproto(wrap) { 586 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 587 returntype) > sysnumhdr 588 for (i = 1; i <= varargc; i++) 589 printf(" \"%s\"", argtype[i]) > sysnumhdr 590 if (isvarargs) 591 printf(" \"...\"") > sysnumhdr 592 printf(" */\n") > sysnumhdr 593 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 594 syscall) > sysnumhdr 595 596 # rumpalooza 597 if (!rumpable) 598 return 599 600 # accumulate fbases we have seen. we want the last 601 # occurence for the default __RENAME() 602 seen = funcseen[fbase] 603 funcseen[fbase] = rumpfname 604 if (seen) 605 return 606 607 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 608 609 for (i = 1; i < varargc; i++) 610 if (argname[i] != "PAD") 611 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 612 613 if (isvarargs) 614 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 615 else 616 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 617 618 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 619 printf(";\n") > rumpprotos 620 621 # generate forward-declares for types, apart from the 622 # braindead typedef jungle we cannot easily handle here 623 for (i = 1; i <= varargc; i++) { 624 type=uncompattype(argtype[i]) 625 sub("const ", "", type) 626 if (!typeseen[type] && \ 627 match(type, "struct") && match(type, "\\*")) { 628 typeseen[type] = 1 629 sub(" *\\*", "", type); 630 printf("%s;\n", type) > rumptypes 631 } 632 } 633 } 634 635 function printrumpsysent(insysent, compatwrap) { 636 if (!insysent) { 637 eno[0] = "rump_enosys" 638 eno[1] = "sys_nomodule" 639 flags[0] = "SYCALL_NOSYS" 640 flags[1] = "0" 641 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 642 "/* %d = %s */\n", \ 643 flags[modular], eno[modular], syscall, funcalias) \ 644 > rumpsysent 645 return 646 } 647 648 printf("\t{ ") > rumpsysent 649 if (argc == 0) { 650 printf("0, 0, ") > rumpsysent 651 } else { 652 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 653 } 654 655 if (compatwrap == "") { 656 if (modular) 657 rfn = "(sy_call_t *)sys_nomodule" 658 else 659 rfn = "(sy_call_t *)" funcname 660 } else { 661 rfn = "(sy_call_t *)" compatwrap "_" funcname 662 } 663 664 printf("0,\n\t %s },", rfn) > rumpsysent 665 for (i = 0; i < (33 - length(rfn)) / 8; i++) 666 printf("\t") > rumpsysent 667 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 668 } 669 670 function iscompattype(type) { 671 for (var in uncompattypes) { 672 if (match(type, var)) { 673 return 1 674 } 675 } 676 677 return 0 678 } 679 680 function uncompattype(type) { 681 for (var in uncompattypes) { 682 if (match(type, var)) { 683 sub(var, uncompattypes[var], type) 684 return type 685 } 686 } 687 688 return type 689 } 690 691 function putent(type, compatwrap) { 692 # output syscall declaration for switch table. 693 if (compatwrap == "") 694 compatwrap_ = "" 695 else 696 compatwrap_ = compatwrap "_" 697 if (argc == 0) 698 arg_type = "void"; 699 else { 700 arg_type = "struct " compatwrap_ funcname "_args"; 701 } 702 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 703 arg_type " *, register_t *);\n" 704 if (sysmap[proto] != 1) { 705 sysmap[proto] = 1; 706 print proto > sysprotos; 707 } 708 709 # output syscall switch entry 710 printf("\t{ ") > sysent 711 if (argc == 0) { 712 printf("0, 0, ") > sysent 713 } else { 714 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 715 } 716 if (modular) 717 wfn = "(sy_call_t *)sys_nomodule"; 718 else if (compatwrap == "") 719 wfn = "(sy_call_t *)" funcname; 720 else 721 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 722 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 723 for (i = 0; i < (33 - length(wfn)) / 8; i++) 724 printf("\t") > sysent 725 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 726 727 # output syscall name for names table 728 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 729 > sysnamesbottom 730 731 # output syscall number of header, if appropriate 732 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 733 type == "NOERR") { 734 # output a prototype, to be used to generate lint stubs in 735 # libc. 736 printproto("") 737 } else if (type == "COMPAT" || type == "EXTERN") { 738 # Just define the syscall number with a comment. These 739 # may be used by compatibility stubs in libc. 740 printproto(compatwrap_) 741 } 742 743 # output syscall argument structure, if it has arguments 744 if (argc != 0) { 745 printf("\n") > sysarghdr 746 if (haverumpcalls && !rumpable) 747 printf("#ifndef RUMP_CLIENT\n") > sysarghdr 748 printf("struct %s%s_args", compatwrap_, funcname) > sysarghdr 749 if (type != "NOARGS") { 750 print " {" >sysarghdr; 751 for (i = 1; i <= argc; i++) 752 printf("\tsyscallarg(%s) %s;\n", argtype[i], 753 argname[i]) > sysarghdr 754 printf "}" >sysarghdr; 755 } 756 printf(";\n") > sysarghdr 757 if (type != "NOARGS" && type != "INDIR") { 758 printf("check_syscall_args(%s%s)\n", compatwrap_, 759 funcname) >sysarghdr 760 } 761 if (haverumpcalls && !rumpable) 762 printf("#endif /* !RUMP_CLIENT */\n") > sysarghdr 763 } 764 765 if (!rumpable) { 766 if (funcname == "sys_pipe" && rumphaspipe == 1) 767 insysent = 1 768 else 769 insysent = 0 770 } else { 771 insysent = 1 772 } 773 printrumpsysent(insysent, compatwrap) 774 775 # output rump marshalling code if necessary 776 if (!rumpable) { 777 return 778 } 779 780 # need a local prototype, we export the re-re-named one in .h 781 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 782 > rumpcalls 783 for (i = 1; i < argc; i++) { 784 if (argname[i] != "PAD") 785 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 786 } 787 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 788 789 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 790 for (i = 1; i < argc; i++) { 791 if (argname[i] != "PAD") 792 printf("%s %s, ", uncompattype(argtype[i]), \ 793 argname[i]) > rumpcalls 794 } 795 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 796 > rumpcalls 797 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 798 if (returntype != "void") { 799 if (type != "NOERR") { 800 printf("\tint error = 0;\n") > rumpcalls 801 } 802 # assume rumpcalls return only integral types 803 printf("\t%s rv = -1;\n", returntype) > rumpcalls 804 } 805 806 argarg = "NULL" 807 argsize = 0; 808 if (argc) { 809 argarg = "&callarg" 810 argsize = "sizeof(callarg)" 811 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 812 > rumpcalls 813 for (i = 1; i <= argc; i++) { 814 if (argname[i] == "PAD") { 815 printf("\tSPARG(&callarg, %s) = 0;\n", \ 816 argname[i]) > rumpcalls 817 } else { 818 if (iscompattype(argtype[i])) { 819 printf("\tSPARG(&callarg, %s) = " \ 820 "(%s)%s;\n", argname[i], argtype[i], \ 821 argname[i]) > rumpcalls 822 } else { 823 printf("\tSPARG(&callarg, %s) = %s;\n",\ 824 argname[i], argname[i]) > rumpcalls 825 } 826 } 827 } 828 printf("\n") > rumpcalls 829 } else { 830 printf("\n") > rumpcalls 831 } 832 printf("\t") > rumpcalls 833 if (returntype != "void" && type != "NOERR") 834 printf("error = ") > rumpcalls 835 printf("rsys_syscall(%s%s%s, " \ 836 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 837 argarg, argsize) > rumpcalls 838 if (type != "NOERR") { 839 printf("\trsys_seterrno(error);\n") > rumpcalls 840 printf("\tif (error == 0) {\n") > rumpcalls 841 indent="\t\t" 842 ending="\t}\n" 843 } else { 844 indent="\t" 845 ending="" 846 } 847 if (returntype != "void") { 848 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 849 indent, returntype) > rumpcalls 850 printf("%s\trv = *(%s *)retval;\n", \ 851 indent, returntype) > rumpcalls 852 printf("%selse\n", indent, indent) > rumpcalls 853 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 854 printf("%s", ending) > rumpcalls 855 printf("\treturn rv;\n") > rumpcalls 856 } 857 printf("}\n") > rumpcalls 858 printf("rsys_alias(%s%s,rump_enosys)\n", \ 859 compatwrap_, funcname) > rumpcalls 860 861 } 862 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 863 || $2 == "NOERR" { 864 parseline() 865 putent($2, "") 866 syscall++ 867 next 868 } 869 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 870 if ($2 == "OBSOL") 871 comment="obsolete" 872 else if ($2 == "EXCL") 873 comment="excluded" 874 else if ($2 == "IGNORED") 875 comment="ignored" 876 else 877 comment="unimplemented" 878 for (i = 3; i <= NF; i++) 879 comment=comment " " $i 880 881 if ($2 == "IGNORED") 882 sys_stub = "(sy_call_t *)nullop"; 883 else 884 sys_stub = sys_nosys; 885 886 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 887 sys_stub, syscall, comment) > sysent 888 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 889 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 890 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 891 > sysnamesbottom 892 if ($2 != "UNIMPL") 893 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 894 syscall++ 895 next 896 } 897 $2 == "EXTERN" { 898 parseline() 899 putent("EXTERN", "") 900 syscall++ 901 next 902 } 903 { 904 for (i = 1; i <= ncompat; i++) { 905 if ($2 == compat_upper[i]) { 906 parseline(); 907 putent("COMPAT", compat[i]) 908 syscall++ 909 next 910 } 911 } 912 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 913 exit 1 914 } 915 END { 916 # output pipe() syscall with its special retval[2] handling 917 if (rumphaspipe) { 918 printf("int rump_sys_pipe(int *);\n") > rumpprotos 919 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 920 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 921 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 922 printf("\tint error = 0;\n") > rumpcalls 923 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 924 printf("NULL, 0, retval);\n") > rumpcalls 925 printf("\tif (error) {\n") > rumpcalls 926 printf("\t\trsys_seterrno(error);\n") > rumpcalls 927 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 928 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 929 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 930 } 931 932 # print default rump syscall interfaces 933 for (var in funcseen) { 934 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 935 toupper(var)) > rumpcallshdr 936 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 937 toupper(var), funcseen[var]) > rumpcallshdr 938 printf("#endif\n\n") > rumpcallshdr 939 } 940 941 maxsyscall = syscall 942 if (nsysent) { 943 if (syscall > nsysent) { 944 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 945 exit 1 946 } 947 while (syscall < nsysent) { 948 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 949 sys_nosys, syscall) > sysent 950 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 951 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 952 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 953 > sysnamesbottom 954 syscall++ 955 } 956 } 957 printf("};\n") > sysent 958 printf("};\n") > rumpsysent 959 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 960 printf("__strong_alias(sysent,rump_sysent);\n") > rumpsysent 961 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 962 if (haverumpcalls) 963 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 964 printf("};\n") > sysnamesbottom 965 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 966 if (nsysent) 967 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 968 } ' 969 970 cat $sysprotos >> $sysarghdr 971 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 972 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 973 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 974 cat $sysdcl $sysent > $syssw 975 cat $sysnamesbottom >> $sysnames 976 cat $rumpsysent >> $rumpcalls 977 978 touch $rumptypes 979 cat $rumptypes >> $rumpcallshdr 980 echo >> $rumpcallshdr 981 cat $rumpprotos >> $rumpcallshdr 982 983 #chmod 444 $sysnames $sysnumhdr $syssw 984
Indexes created Tue Oct 14 08:09:56 GMT 2025