makesyscalls.sh revision 1.124
1 # $NetBSD: makesyscalls.sh,v 1.124 2012/08/03 11:31:33 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 "#include <sys/param.h>\n\n" > rumpcalls 223 printf "#ifdef __NetBSD__\n" > rumpcalls 224 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > rumpcalls 225 226 printf "#include <sys/fstypes.h>\n" > rumpcalls 227 printf "#include <sys/proc.h>\n" > rumpcalls 228 printf "#endif /* __NetBSD__ */\n\n" > rumpcalls 229 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 230 printf "#include <errno.h>\n" > rumpcalls 231 printf "#include <stdint.h>\n" > rumpcalls 232 printf "#include <stdlib.h>\n\n" > rumpcalls 233 printf "#include <srcsys/syscall.h>\n" > rumpcalls 234 printf "#include <srcsys/syscallargs.h>\n\n" > rumpcalls 235 printf "#include <rump/rumpclient.h>\n\n" > rumpcalls 236 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 237 printf " rumpclient_syscall(num, data, dlen, retval)\n" > rumpcalls 238 printf "#define rsys_seterrno(error) errno = error\n" > rumpcalls 239 printf "#define rsys_alias(a,b)\n#else\n" > rumpcalls 240 printf "#include <sys/syscall.h>\n" > rumpcalls 241 printf "#include <sys/syscallargs.h>\n\n" > rumpcalls 242 printf "#include <sys/syscallvar.h>\n\n" > rumpcalls 243 printf "#include <rump/rumpuser.h>\n" > rumpcalls 244 printf "#include \"rump_private.h\"\n\n" > rumpcalls 245 printf "static int\nrsys_syscall" > rumpcalls 246 printf "(int num, void *data, size_t dlen, register_t *retval)" > rumpcalls 247 printf "\n{\n\tstruct sysent *callp = rump_sysent + num;\n" > rumpcalls 248 printf "\tint rv;\n" > rumpcalls 249 printf "\n\tKASSERT(num > 0 && num < SYS_NSYSENT);\n\n" > rumpcalls 250 printf "\trump_schedule();\n" > rumpcalls 251 printf "\trv = sy_call(callp, curlwp, data, retval);\n" > rumpcalls 252 printf "\trump_unschedule();\n\n\treturn rv;\n}\n\n" > rumpcalls 253 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 254 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 255 256 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 257 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 258 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 259 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 260 printf "#endif\n\n" > rumpcalls 261 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 262 printf "int rump_enosys(void);\n" > rumpcalls 263 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 264 printf "#endif\n" > rumpcalls 265 266 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 267 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 268 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 269 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 270 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 271 272 # System call names are included by userland (kdump(1)), so 273 # hide the include files from it. 274 printf "#if defined(_KERNEL_OPT)\n" > sysnames 275 276 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 277 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 278 279 printf " * created from%s\n */\n\n", $0 > sysnumhdr 280 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 281 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 282 283 printf " * created from%s\n */\n\n", $0 > sysarghdr 284 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 285 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 286 287 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 288 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 289 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 290 printf "#ifdef _KERNEL\n" > rumpcallshdr 291 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 292 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 293 printf "#include <sys/types.h> /* typedefs */\n" > rumpcallshdr 294 printf "#include <sys/select.h> /* typedefs */\n" > rumpcallshdr 295 printf "#include <sys/socket.h> /* typedefs */\n\n" > rumpcallshdr 296 printf "#include <signal.h> /* typedefs */\n\n" > rumpcallshdr 297 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 298 299 printf "%s", sysarghdrextra > sysarghdr 300 # Write max number of system call arguments to both headers 301 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 302 > sysnumhdr 303 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 304 > sysarghdr 305 printf "#undef\tsyscallarg\n" > sysarghdr 306 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 307 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 308 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 309 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 310 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 311 > sysarghdr 312 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 313 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 314 registertype > sysarghdr 315 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 316 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 317 registertype > sysarghdr 318 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 319 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 320 printf "\t}\n" > sysarghdr 321 printf("\n#undef check_syscall_args\n") >sysarghdr 322 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 323 "\ttypedef char call##_check_args" \ 324 "[sizeof (struct call##_args) \\\n" \ 325 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 326 constprefix, registertype) >sysarghdr 327 328 # compat types from syscalls.master. this is slightly ugly, 329 # but given that we have so few compats from over 17 years, 330 # a more complicated solution is not currently warranted. 331 uncompattypes["struct timeval50"] = "struct timeval"; 332 uncompattypes["struct timespec50"] = "struct timespec"; 333 uncompattypes["struct stat30"] = "struct stat"; 334 335 next 336 } 337 NF == 0 || $1 ~ /^;/ { 338 next 339 } 340 $0 ~ /^%%$/ { 341 intable = 1 342 next 343 } 344 $1 ~ /^#[ ]*include/ { 345 print > sysdcl 346 print > sysnames 347 next 348 } 349 $1 ~ /^#/ && !intable { 350 print > sysdcl 351 print > sysnames 352 next 353 } 354 $1 ~ /^#/ && intable { 355 if ($1 ~ /^#[ ]*if/) { 356 savedepth++ 357 savesyscall[savedepth] = syscall 358 } 359 if ($1 ~ /^#[ ]*else/) { 360 if (savedepth <= 0) { 361 printf("%s: line %d: unbalanced #else\n", \ 362 infile, NR) 363 exit 1 364 } 365 syscall = savesyscall[savedepth] 366 } 367 if ($1 ~ /^#[ ]*endif/) { 368 if (savedepth <= 0) { 369 printf("%s: line %d: unbalanced #endif\n", \ 370 infile, NR) 371 exit 1 372 } 373 savedepth-- 374 } 375 print > sysent 376 print > sysarghdr 377 print > sysnumhdr 378 print > sysprotos 379 print > sysnamesbottom 380 381 # XXX: technically we do not want to have conditionals in rump, 382 # but it is easier to just let the cpp handle them than try to 383 # figure out what we want here in this script 384 print > rumpsysent 385 next 386 } 387 syscall != $1 { 388 printf "%s: line %d: syscall number out of sync at %d\n", \ 389 infile, NR, syscall 390 printf "line is:\n" 391 print 392 exit 1 393 } 394 function parserr(was, wanted) { 395 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 396 infile, NR, was, wanted 397 printf "line is:\n" 398 print 399 exit 1 400 } 401 function parseline() { 402 f=3 # toss number and type 403 if ($2 == "INDIR") 404 sycall_flags="SYCALL_INDIRECT" 405 else 406 sycall_flags="0" 407 if ($NF != "}") { 408 funcalias=$NF 409 end=NF-1 410 } else { 411 funcalias="" 412 end=NF 413 } 414 if ($f == "INDIR") { # allow for "NOARG INDIR" 415 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 416 f++ 417 } 418 if ($f == "MODULAR") { # registered at runtime 419 modular = 1 420 f++ 421 } else { 422 modular = 0; 423 } 424 if ($f == "RUMP") { 425 rumpable = 1 426 f++ 427 } else { 428 rumpable = 0 429 } 430 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 431 funcalias=$f 432 f++ 433 } 434 if ($f != "{") 435 parserr($f, "{") 436 f++ 437 if ($end != "}") 438 parserr($end, "}") 439 end-- 440 if ($end != ";") 441 parserr($end, ";") 442 end-- 443 if ($end != ")") 444 parserr($end, ")") 445 end-- 446 447 returntype = oldf = ""; 448 do { 449 if (returntype != "" && oldf != "*") 450 returntype = returntype" "; 451 returntype = returntype$f; 452 oldf = $f; 453 f++ 454 } while ($f != "|" && f < (end-1)) 455 if (f == (end - 1)) { 456 parserr($f, "function argument definition (maybe \"|\"?)"); 457 } 458 f++ 459 460 fprefix=$f 461 f++ 462 if ($f != "|") { 463 parserr($f, "function compat delimiter (maybe \"|\"?)"); 464 } 465 f++ 466 467 fcompat="" 468 if ($f != "|") { 469 fcompat=$f 470 f++ 471 } 472 473 if ($f != "|") { 474 parserr($f, "function name delimiter (maybe \"|\"?)"); 475 } 476 f++ 477 fbase=$f 478 479 # pipe is special in how to returns its values. 480 # So just generate it manually if present. 481 if (rumpable == 1 && fbase == "pipe") { 482 rumpable = 0; 483 rumphaspipe = 1; 484 } 485 486 if (fcompat != "") { 487 funcname=fprefix "___" fbase "" fcompat 488 } else { 489 funcname=fprefix "_" fbase 490 } 491 if (returntype == "quad_t" || returntype == "off_t") { 492 if (sycall_flags == "0") 493 sycall_flags = "SYCALL_RET_64"; 494 else 495 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 496 } 497 498 if (funcalias == "") { 499 funcalias=funcname 500 sub(/^([^_]+_)*sys_/, "", funcalias) 501 realname=fbase 502 } else { 503 realname=funcalias 504 } 505 rumpfname=realname "" fcompat 506 f++ 507 508 if ($f != "(") 509 parserr($f, "(") 510 f++ 511 512 argc=0; 513 argalign=0; 514 if (f == end) { 515 if ($f != "void") 516 parserr($f, "argument definition") 517 isvarargs = 0; 518 varargc = 0; 519 argtype[0]="void"; 520 return 521 } 522 523 # some system calls (open() and fcntl()) can accept a variable 524 # number of arguments. If syscalls accept a variable number of 525 # arguments, they must still have arguments specified for 526 # the remaining argument "positions," because of the way the 527 # kernel system call argument handling works. 528 # 529 # Indirect system calls, e.g. syscall(), are exceptions to this 530 # rule, since they are handled entirely by machine-dependent code 531 # and do not need argument structures built. 532 533 isvarargs = 0; 534 args64 = 0; 535 while (f <= end) { 536 if ($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($f, "a padding argument") 560 } else { 561 argalign++; 562 } 563 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 564 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 565 if (sycall_flags == "0") 566 sycall_flags = "SYCALL_ARG"argc-1"_64"; 567 else 568 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 569 args64++; 570 } 571 argname[argc]=$f; 572 f += 2; # skip name, and any comma 573 } 574 if (args64 > 0) 575 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 576 # must see another argument after varargs notice. 577 if (isvarargs) { 578 if (argc == varargc) 579 parserr($f, "argument definition") 580 } else 581 varargc = argc; 582 } 583 584 function printproto(wrap) { 585 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 586 returntype) > sysnumhdr 587 for (i = 1; i <= varargc; i++) 588 printf(" \"%s\"", argtype[i]) > sysnumhdr 589 if (isvarargs) 590 printf(" \"...\"") > sysnumhdr 591 printf(" */\n") > sysnumhdr 592 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 593 syscall) > sysnumhdr 594 595 # rumpalooza 596 if (!rumpable) 597 return 598 599 # accumulate fbases we have seen. we want the last 600 # occurence for the default __RENAME() 601 seen = funcseen[fbase] 602 funcseen[fbase] = rumpfname 603 if (seen) 604 return 605 606 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 607 608 for (i = 1; i < varargc; i++) 609 if (argname[i] != "PAD") 610 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 611 612 if (isvarargs) 613 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 614 else 615 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 616 617 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 618 printf(";\n") > rumpprotos 619 620 # generate forward-declares for types, apart from the 621 # braindead typedef jungle we cannot easily handle here 622 for (i = 1; i <= varargc; i++) { 623 type=uncompattype(argtype[i]) 624 sub("const ", "", type) 625 if (!typeseen[type] && \ 626 match(type, "struct") && match(type, "\\*")) { 627 typeseen[type] = 1 628 sub(" *\\*", "", type); 629 printf("%s;\n", type) > rumptypes 630 } 631 } 632 } 633 634 function printrumpsysent(insysent, compatwrap) { 635 if (!insysent) { 636 eno[0] = "rump_enosys" 637 eno[1] = "sys_nomodule" 638 flags[0] = "SYCALL_NOSYS" 639 flags[1] = "0" 640 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 641 "/* %d = %s */\n", \ 642 flags[modular], eno[modular], syscall, funcalias) \ 643 > rumpsysent 644 return 645 } 646 647 printf("\t{ ") > rumpsysent 648 if (argc == 0) { 649 printf("0, 0, ") > rumpsysent 650 } else { 651 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 652 } 653 654 if (compatwrap == "") { 655 if (modular) 656 rfn = "(sy_call_t *)sys_nomodule" 657 else 658 rfn = "(sy_call_t *)" funcname 659 } else { 660 rfn = "(sy_call_t *)" compatwrap "_" funcname 661 } 662 663 printf("0,\n\t %s },", rfn) > rumpsysent 664 for (i = 0; i < (33 - length(rfn)) / 8; i++) 665 printf("\t") > rumpsysent 666 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 667 } 668 669 function iscompattype(type) { 670 for (var in uncompattypes) { 671 if (match(type, var)) { 672 return 1 673 } 674 } 675 676 return 0 677 } 678 679 function uncompattype(type) { 680 for (var in uncompattypes) { 681 if (match(type, var)) { 682 sub(var, uncompattypes[var], type) 683 return type 684 } 685 } 686 687 return type 688 } 689 690 function putent(type, compatwrap) { 691 # output syscall declaration for switch table. 692 if (compatwrap == "") 693 compatwrap_ = "" 694 else 695 compatwrap_ = compatwrap "_" 696 if (argc == 0) 697 arg_type = "void"; 698 else { 699 arg_type = "struct " compatwrap_ funcname "_args"; 700 } 701 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 702 arg_type " *, register_t *);\n" 703 if (sysmap[proto] != 1) { 704 sysmap[proto] = 1; 705 print proto > sysprotos; 706 } 707 708 # output syscall switch entry 709 printf("\t{ ") > sysent 710 if (argc == 0) { 711 printf("0, 0, ") > sysent 712 } else { 713 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 714 } 715 if (modular) 716 wfn = "(sy_call_t *)sys_nomodule"; 717 else if (compatwrap == "") 718 wfn = "(sy_call_t *)" funcname; 719 else 720 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 721 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 722 for (i = 0; i < (33 - length(wfn)) / 8; i++) 723 printf("\t") > sysent 724 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 725 726 # output syscall name for names table 727 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 728 > sysnamesbottom 729 730 # output syscall number of header, if appropriate 731 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 732 type == "NOERR") { 733 # output a prototype, to be used to generate lint stubs in 734 # libc. 735 printproto("") 736 } else if (type == "COMPAT" || type == "EXTERN") { 737 # Just define the syscall number with a comment. These 738 # may be used by compatibility stubs in libc. 739 printproto(compatwrap_) 740 } 741 742 # output syscall argument structure, if it has arguments 743 if (argc != 0) { 744 printf("\n") > sysarghdr 745 if (haverumpcalls && !rumpable) 746 printf("#ifndef RUMP_CLIENT\n") > sysarghdr 747 printf("struct %s%s_args", compatwrap_, funcname) > sysarghdr 748 if (type != "NOARGS") { 749 print " {" >sysarghdr; 750 for (i = 1; i <= argc; i++) 751 printf("\tsyscallarg(%s) %s;\n", argtype[i], 752 argname[i]) > sysarghdr 753 printf "}" >sysarghdr; 754 } 755 printf(";\n") > sysarghdr 756 if (type != "NOARGS" && type != "INDIR") { 757 printf("check_syscall_args(%s%s)\n", compatwrap_, 758 funcname) >sysarghdr 759 } 760 if (haverumpcalls && !rumpable) 761 printf("#endif /* !RUMP_CLIENT */\n") > sysarghdr 762 } 763 764 if (!rumpable) { 765 if (funcname == "sys_pipe" && rumphaspipe == 1) 766 insysent = 1 767 else 768 insysent = 0 769 } else { 770 insysent = 1 771 } 772 printrumpsysent(insysent, compatwrap) 773 774 # output rump marshalling code if necessary 775 if (!rumpable) { 776 return 777 } 778 779 # need a local prototype, we export the re-re-named one in .h 780 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 781 > rumpcalls 782 for (i = 1; i < argc; i++) { 783 if (argname[i] != "PAD") 784 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 785 } 786 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 787 788 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 789 for (i = 1; i < argc; i++) { 790 if (argname[i] != "PAD") 791 printf("%s %s, ", uncompattype(argtype[i]), \ 792 argname[i]) > rumpcalls 793 } 794 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 795 > rumpcalls 796 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 797 if (returntype != "void") { 798 if (type != "NOERR") { 799 printf("\tint error = 0;\n") > rumpcalls 800 } 801 # assume rumpcalls return only integral types 802 printf("\t%s rv = -1;\n", returntype) > rumpcalls 803 } 804 805 argarg = "NULL" 806 argsize = 0; 807 if (argc) { 808 argarg = "&callarg" 809 argsize = "sizeof(callarg)" 810 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 811 > rumpcalls 812 for (i = 1; i <= argc; i++) { 813 if (argname[i] == "PAD") { 814 printf("\tSPARG(&callarg, %s) = 0;\n", \ 815 argname[i]) > rumpcalls 816 } else { 817 if (iscompattype(argtype[i])) { 818 printf("\tSPARG(&callarg, %s) = " \ 819 "(%s)%s;\n", argname[i], argtype[i], \ 820 argname[i]) > rumpcalls 821 } else { 822 printf("\tSPARG(&callarg, %s) = %s;\n",\ 823 argname[i], argname[i]) > rumpcalls 824 } 825 } 826 } 827 printf("\n") > rumpcalls 828 } else { 829 printf("\n") > rumpcalls 830 } 831 printf("\t") > rumpcalls 832 if (returntype != "void" && type != "NOERR") 833 printf("error = ") > rumpcalls 834 printf("rsys_syscall(%s%s%s, " \ 835 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 836 argarg, argsize) > rumpcalls 837 if (type != "NOERR") { 838 printf("\trsys_seterrno(error);\n") > rumpcalls 839 printf("\tif (error == 0) {\n") > rumpcalls 840 indent="\t\t" 841 ending="\t}\n" 842 } else { 843 indent="\t" 844 ending="" 845 } 846 if (returntype != "void") { 847 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 848 indent, returntype) > rumpcalls 849 printf("%s\trv = *(%s *)retval;\n", \ 850 indent, returntype) > rumpcalls 851 printf("%selse\n", indent, indent) > rumpcalls 852 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 853 printf("%s", ending) > rumpcalls 854 printf("\treturn rv;\n") > rumpcalls 855 } 856 printf("}\n") > rumpcalls 857 printf("rsys_alias(%s%s,rump_enosys)\n", \ 858 compatwrap_, funcname) > rumpcalls 859 860 } 861 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 862 || $2 == "NOERR" { 863 parseline() 864 putent($2, "") 865 syscall++ 866 next 867 } 868 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 869 if ($2 == "OBSOL") 870 comment="obsolete" 871 else if ($2 == "EXCL") 872 comment="excluded" 873 else if ($2 == "IGNORED") 874 comment="ignored" 875 else 876 comment="unimplemented" 877 for (i = 3; i <= NF; i++) 878 comment=comment " " $i 879 880 if ($2 == "IGNORED") 881 sys_stub = "(sy_call_t *)nullop"; 882 else 883 sys_stub = sys_nosys; 884 885 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 886 sys_stub, syscall, comment) > sysent 887 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 888 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 889 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 890 > sysnamesbottom 891 if ($2 != "UNIMPL") 892 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 893 syscall++ 894 next 895 } 896 $2 == "EXTERN" { 897 parseline() 898 putent("EXTERN", "") 899 syscall++ 900 next 901 } 902 { 903 for (i = 1; i <= ncompat; i++) { 904 if ($2 == compat_upper[i]) { 905 parseline(); 906 putent("COMPAT", compat[i]) 907 syscall++ 908 next 909 } 910 } 911 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 912 exit 1 913 } 914 END { 915 # output pipe() syscall with its special retval[2] handling 916 if (rumphaspipe) { 917 printf("int rump_sys_pipe(int *);\n") > rumpprotos 918 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 919 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 920 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 921 printf("\tint error = 0;\n") > rumpcalls 922 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 923 printf("NULL, 0, retval);\n") > rumpcalls 924 printf("\tif (error) {\n") > rumpcalls 925 printf("\t\trsys_seterrno(error);\n") > rumpcalls 926 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 927 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 928 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 929 } 930 931 # print default rump syscall interfaces 932 for (var in funcseen) { 933 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 934 toupper(var)) > rumpcallshdr 935 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 936 toupper(var), funcseen[var]) > rumpcallshdr 937 printf("#endif\n\n") > rumpcallshdr 938 } 939 940 maxsyscall = syscall 941 if (nsysent) { 942 if (syscall > nsysent) { 943 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 944 exit 1 945 } 946 while (syscall < nsysent) { 947 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 948 sys_nosys, syscall) > sysent 949 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 950 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 951 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 952 > sysnamesbottom 953 syscall++ 954 } 955 } 956 printf("};\n") > sysent 957 printf("};\n") > rumpsysent 958 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 959 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 960 if (haverumpcalls) 961 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 962 printf("};\n") > sysnamesbottom 963 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 964 if (nsysent) 965 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 966 } ' 967 968 cat $sysprotos >> $sysarghdr 969 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 970 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 971 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 972 cat $sysdcl $sysent > $syssw 973 cat $sysnamesbottom >> $sysnames 974 cat $rumpsysent >> $rumpcalls 975 976 touch $rumptypes 977 cat $rumptypes >> $rumpcallshdr 978 echo >> $rumpcallshdr 979 cat $rumpprotos >> $rumpcallshdr 980 981 #chmod 444 $sysnames $sysnumhdr $syssw 982
Indexes created Mon Oct 13 21:09:55 GMT 2025