makesyscalls.sh revision 1.108
1 #! /bin/sh - 2 # $NetBSD: makesyscalls.sh,v 1.108 2010/12/30 20:09:53 pooka Exp $ 3 # 4 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou 5 # All rights reserved. 6 # 7 # Redistribution and use in source and binary forms, with or without 8 # modification, are permitted provided that the following conditions 9 # are met: 10 # 1. Redistributions of source code must retain the above copyright 11 # notice, this list of conditions and the following disclaimer. 12 # 2. Redistributions in binary form must reproduce the above copyright 13 # notice, this list of conditions and the following disclaimer in the 14 # documentation and/or other materials provided with the distribution. 15 # 3. All advertising materials mentioning features or use of this software 16 # must display the following acknowledgement: 17 # This product includes software developed for the NetBSD Project 18 # by Christopher G. Demetriou. 19 # 4. The name of the author may not be used to endorse or promote products 20 # derived from this software without specific prior written permission 21 # 22 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33 # @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93 34 35 set -e 36 37 case $# in 38 2) ;; 39 *) echo "Usage: $0 config-file input-file" 1>&2 40 exit 1 41 ;; 42 esac 43 44 # the config file sets the following variables: 45 # sysalign check for alignment of off_t 46 # sysnames the syscall names file 47 # sysnumhdr the syscall numbers file 48 # syssw the syscall switch file 49 # sysarghdr the syscall argument struct definitions 50 # compatopts those syscall types that are for 'compat' syscalls 51 # switchname the name for the 'struct sysent' we define 52 # namesname the name for the 'const char *[]' we define 53 # constprefix the prefix for the system call constants 54 # registertype the type for register_t 55 # nsysent the size of the sysent table 56 # sys_nosys [optional] name of function called for unsupported 57 # syscalls, if not sys_nosys() 58 # maxsysargs [optiona] the maximum number or arguments 59 # 60 # NOTE THAT THIS makesyscalls.sh DOES NOT SUPPORT 'SYSLIBCOMPAT'. 61 62 # source the config file. 63 sys_nosys="sys_nosys" # default is sys_nosys(), if not specified otherwise 64 maxsysargs=8 # default limit is 8 (32bit) arguments 65 rumpcalls="/dev/null" 66 rumpcallshdr="/dev/null" 67 rumpsysent="rumpsysent.tmp" 68 . ./$1 69 70 # tmp files: 71 sysdcl="sysent.dcl" 72 sysprotos="sys.protos" 73 syscompat_pref="sysent." 74 sysent="sysent.switch" 75 sysnamesbottom="sysnames.bottom" 76 77 trap "rm $sysdcl $sysprotos $sysent $sysnamesbottom $rumpsysent" 0 78 79 # Awk program (must support nawk extensions) 80 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 81 awk=${AWK:-awk} 82 83 # Does this awk have a "toupper" function? 84 have_toupper=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 85 86 # If this awk does not define "toupper" then define our own. 87 if [ "$have_toupper" = TRUE ] ; then 88 # Used awk (GNU awk or nawk) provides it 89 toupper= 90 else 91 # Provide our own toupper() 92 toupper=' 93 function toupper(str) { 94 _toupper_cmd = "echo "str" |tr a-z A-Z" 95 _toupper_cmd | getline _toupper_str; 96 close(_toupper_cmd); 97 return _toupper_str; 98 }' 99 fi 100 101 # before handing it off to awk, make a few adjustments: 102 # (1) insert spaces around {, }, (, ), *, and commas. 103 # (2) get rid of any and all dollar signs (so that rcs id use safe) 104 # 105 # The awk script will deal with blank lines and lines that 106 # start with the comment character (';'). 107 108 sed -e ' 109 s/\$//g 110 :join 111 /\\$/{a\ 112 113 N 114 s/\\\n// 115 b join 116 } 117 2,${ 118 /^#/!s/\([{}()*,|]\)/ \1 /g 119 } 120 ' < $2 | $awk " 121 $toupper 122 BEGIN { 123 # Create a NetBSD tag that does not get expanded when checking 124 # this script out of CVS. (This part of the awk script is in a 125 # shell double-quoted string, so the backslashes are eaten by 126 # the shell.) 127 tag = \"\$\" \"NetBSD\" \"\$\" 128 129 # to allow nested #if/#else/#endif sets 130 savedepth = 0 131 # to track already processed syscalls 132 133 sysnames = \"$sysnames\" 134 sysprotos = \"$sysprotos\" 135 sysnumhdr = \"$sysnumhdr\" 136 sysarghdr = \"$sysarghdr\" 137 sysarghdrextra = \"$sysarghdrextra\" 138 rumpcalls = \"$rumpcalls\" 139 rumpcallshdr = \"$rumpcallshdr\" 140 rumpsysent = \"$rumpsysent\" 141 switchname = \"$switchname\" 142 namesname = \"$namesname\" 143 constprefix = \"$constprefix\" 144 registertype = \"$registertype\" 145 sysalign=\"$sysalign\" 146 if (!registertype) { 147 registertype = \"register_t\" 148 } 149 nsysent = \"$nsysent\" 150 151 sysdcl = \"$sysdcl\" 152 syscompat_pref = \"$syscompat_pref\" 153 sysent = \"$sysent\" 154 sysnamesbottom = \"$sysnamesbottom\" 155 sys_nosys = \"$sys_nosys\" 156 maxsysargs = \"$maxsysargs\" 157 infile = \"$2\" 158 159 compatopts = \"$compatopts\" 160 "' 161 162 printf "/* %s */\n\n", tag > sysdcl 163 printf "/*\n * System call switch table.\n *\n" > sysdcl 164 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 165 166 ncompat = split(compatopts,compat) 167 for (i = 1; i <= ncompat; i++) { 168 compat_upper[i] = toupper(compat[i]) 169 170 printf "\n#ifdef %s\n", compat_upper[i] > sysent 171 printf "#define %s(func) __CONCAT(%s_,func)\n", compat[i], \ 172 compat[i] > sysent 173 printf "#else\n" > sysent 174 printf "#define %s(func) %s\n", compat[i], sys_nosys > sysent 175 printf "#endif\n" > sysent 176 } 177 178 printf "\n#define\ts(type)\tsizeof(type)\n" > sysent 179 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > sysent 180 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > sysent 181 printf "struct sysent %s[] = {\n",switchname > sysent 182 183 printf "/* %s */\n\n", tag > sysnames 184 printf "/*\n * System call names.\n *\n" > sysnames 185 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 186 187 printf "\n/*\n * System call prototypes.\n */\n\n" > sysprotos 188 189 printf "/* %s */\n\n", tag > sysnumhdr 190 printf "/*\n * System call numbers.\n *\n" > sysnumhdr 191 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnumhdr 192 193 printf "/* %s */\n\n", tag > sysarghdr 194 printf "/*\n * System call argument lists.\n *\n" > sysarghdr 195 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarghdr 196 197 printf "/* %s */\n\n", tag > rumpcalls 198 printf "/*\n * System call vector and marshalling for rump.\n *\n" > rumpcalls 199 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcalls 200 201 printf "/* %s */\n\n", tag > rumpcallshdr 202 printf "/*\n * System call protos in rump namespace.\n *\n" > rumpcallshdr 203 printf " * DO NOT EDIT-- this file is automatically generated.\n" > rumpcallshdr 204 } 205 NR == 1 { 206 sub(/ $/, "") 207 printf " * created from%s\n */\n\n", $0 > sysdcl 208 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysdcl 209 210 printf " * created from%s\n */\n\n", $0 > sysnames 211 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysnames 212 213 printf " * created from%s\n */\n\n", $0 > rumpcalls 214 printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > rumpcalls 215 216 printf "#include <sys/param.h>\n" > rumpcalls 217 printf "#include <sys/fstypes.h>\n" > rumpcalls 218 printf "#include <sys/proc.h>\n" > rumpcalls 219 printf "#include <sys/syscall.h>\n" > rumpcalls 220 printf "#include <sys/syscallargs.h>\n\n" > rumpcalls 221 printf "#ifdef RUMP_CLIENT\n" > rumpcalls 222 printf "#include <errno.h>\n" > rumpcalls 223 printf "#include <rump/rumpclient.h>\n\n" > rumpcalls 224 printf "#define rsys_syscall(num, data, dlen, retval)\t\\\n" > rumpcalls 225 printf " rumpclient_syscall(num, data, dlen, retval)\n" > rumpcalls 226 printf "#define rsys_seterrno(error) errno = error\n" > rumpcalls 227 printf "#define rsys_alias(a,b)\n#else\n" > rumpcalls 228 printf "#include <sys/syscallvar.h>\n\n" > rumpcalls 229 printf "#include <rump/rumpuser.h>\n" > rumpcalls 230 printf "#include \"rump_private.h\"\n\n" > rumpcalls 231 printf "static int\nrsys_syscall" > rumpcalls 232 printf "(int num, void *data, size_t dlen, register_t *retval)" > rumpcalls 233 printf "\n{\n\tstruct sysent *callp = rump_sysent + num;\n" > rumpcalls 234 printf "\tint rv;\n" > rumpcalls 235 printf "\n\tKASSERT(num > 0 && num < SYS_NSYSENT);\n\n" > rumpcalls 236 printf "\trump_schedule();\n" > rumpcalls 237 printf "\trv = sy_call(callp, curlwp, data, retval);\n" > rumpcalls 238 printf "\trump_unschedule();\n\n\treturn rv;\n}\n\n" > rumpcalls 239 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 240 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 241 242 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 243 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 244 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 245 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 246 printf "#endif\n\n" > rumpcalls 247 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 248 printf "int rump_enosys(void);\n" > rumpcalls 249 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 250 printf "#endif\n" > rumpcalls 251 252 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 253 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 254 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 255 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 256 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 257 258 # System call names are included by userland (kdump(1)), so 259 # hide the include files from it. 260 printf "#if defined(_KERNEL_OPT)\n" > sysnames 261 262 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 263 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 264 265 printf " * created from%s\n */\n\n", $0 > sysnumhdr 266 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 267 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 268 269 printf " * created from%s\n */\n\n", $0 > sysarghdr 270 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 271 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 272 273 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 274 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 275 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 276 printf "#ifdef _KERNEL\n" > rumpcallshdr 277 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 278 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 279 printf "#include <sys/types.h>\n" > rumpcallshdr 280 printf "#include <sys/select.h>\n\n" > rumpcallshdr 281 printf "#include <signal.h>\n\n" > rumpcallshdr 282 283 printf "%s", sysarghdrextra > sysarghdr 284 # Write max number of system call arguments to both headers 285 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 286 > sysnumhdr 287 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 288 > sysarghdr 289 printf "#undef\tsyscallarg\n" > sysarghdr 290 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 291 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 292 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 293 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 294 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 295 > sysarghdr 296 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 297 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 298 registertype > sysarghdr 299 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 300 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 301 registertype > sysarghdr 302 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 303 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 304 printf "\t}\n" > sysarghdr 305 printf("\n#undef check_syscall_args\n") >sysarghdr 306 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 307 "\ttypedef char call##_check_args" \ 308 "[sizeof (struct call##_args) \\\n" \ 309 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 310 constprefix, registertype) >sysarghdr 311 next 312 } 313 NF == 0 || $1 ~ /^;/ { 314 next 315 } 316 $0 ~ /^%%$/ { 317 intable = 1 318 next 319 } 320 $1 ~ /^#[ ]*include/ { 321 print > sysdcl 322 print > sysnames 323 next 324 } 325 $1 ~ /^#/ && !intable { 326 print > sysdcl 327 print > sysnames 328 next 329 } 330 $1 ~ /^#/ && intable { 331 if ($1 ~ /^#[ ]*if/) { 332 savedepth++ 333 savesyscall[savedepth] = syscall 334 } 335 if ($1 ~ /^#[ ]*else/) { 336 if (savedepth <= 0) { 337 printf("%s: line %d: unbalanced #else\n", \ 338 infile, NR) 339 exit 1 340 } 341 syscall = savesyscall[savedepth] 342 } 343 if ($1 ~ /^#[ ]*endif/) { 344 if (savedepth <= 0) { 345 printf("%s: line %d: unbalanced #endif\n", \ 346 infile, NR) 347 exit 1 348 } 349 savedepth-- 350 } 351 print > sysent 352 print > sysarghdr 353 print > sysnumhdr 354 print > sysprotos 355 print > sysnamesbottom 356 357 # XXX: technically we do not want to have conditionals in rump, 358 # but it is easier to just let the cpp handle them than try to 359 # figure out what we want here in this script 360 print > rumpsysent 361 next 362 } 363 syscall != $1 { 364 printf "%s: line %d: syscall number out of sync at %d\n", \ 365 infile, NR, syscall 366 printf "line is:\n" 367 print 368 exit 1 369 } 370 function parserr(was, wanted) { 371 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 372 infile, NR, was, wanted 373 printf "line is:\n" 374 print 375 exit 1 376 } 377 function parseline() { 378 f=3 # toss number and type 379 if ($2 == "INDIR") 380 sycall_flags="SYCALL_INDIRECT" 381 else 382 sycall_flags="0" 383 if ($NF != "}") { 384 funcalias=$NF 385 end=NF-1 386 } else { 387 funcalias="" 388 end=NF 389 } 390 if ($f == "INDIR") { # allow for "NOARG INDIR" 391 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 392 f++ 393 } 394 if ($f == "MODULAR") { # registered at runtime 395 modular = 1 396 f++ 397 } else { 398 modular = 0; 399 } 400 if ($f == "RUMP") { 401 rumpable = 1 402 f++ 403 } else { 404 rumpable = 0 405 } 406 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 407 funcalias=$f 408 f++ 409 } 410 if ($f != "{") 411 parserr($f, "{") 412 f++ 413 if ($end != "}") 414 parserr($end, "}") 415 end-- 416 if ($end != ";") 417 parserr($end, ";") 418 end-- 419 if ($end != ")") 420 parserr($end, ")") 421 end-- 422 423 returntype = oldf = ""; 424 do { 425 if (returntype != "" && oldf != "*") 426 returntype = returntype" "; 427 returntype = returntype$f; 428 oldf = $f; 429 f++ 430 } while ($f != "|" && f < (end-1)) 431 if (f == (end - 1)) { 432 parserr($f, "function argument definition (maybe \"|\"?)"); 433 } 434 f++ 435 436 fprefix=$f 437 f++ 438 if ($f != "|") { 439 parserr($f, "function compat delimiter (maybe \"|\"?)"); 440 } 441 f++ 442 443 fcompat="" 444 if ($f != "|") { 445 fcompat=$f 446 f++ 447 } 448 449 if ($f != "|") { 450 parserr($f, "function name delimiter (maybe \"|\"?)"); 451 } 452 f++ 453 fbase=$f 454 455 # pipe is special in how to returns its values. 456 # So just generate it manually if present. 457 if (rumpable == 1 && fbase == "pipe") { 458 rumpable = 0; 459 rumphaspipe = 1; 460 } 461 462 funcstdname=fprefix "_" fbase 463 if (fcompat != "") { 464 funcname=fprefix "___" fbase "" fcompat 465 wantrename=1 466 } else { 467 funcname=funcstdname 468 wantrename=0 469 } 470 if (returntype == "quad_t" || returntype == "off_t") { 471 if (sycall_flags == "0") 472 sycall_flags = "SYCALL_RET_64"; 473 else 474 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 475 } 476 477 if (funcalias == "") { 478 funcalias=funcname 479 sub(/^([^_]+_)*sys_/, "", funcalias) 480 } 481 f++ 482 483 if ($f != "(") 484 parserr($f, "(") 485 f++ 486 487 argc=0; 488 argalign=0; 489 if (f == end) { 490 if ($f != "void") 491 parserr($f, "argument definition") 492 isvarargs = 0; 493 varargc = 0; 494 argtype[0]="void"; 495 return 496 } 497 498 # some system calls (open() and fcntl()) can accept a variable 499 # number of arguments. If syscalls accept a variable number of 500 # arguments, they must still have arguments specified for 501 # the remaining argument "positions," because of the way the 502 # kernel system call argument handling works. 503 # 504 # Indirect system calls, e.g. syscall(), are exceptions to this 505 # rule, since they are handled entirely by machine-dependent code 506 # and do not need argument structures built. 507 508 isvarargs = 0; 509 args64 = 0; 510 while (f <= end) { 511 if ($f == "...") { 512 f++; 513 isvarargs = 1; 514 varargc = argc; 515 continue; 516 } 517 argc++ 518 argtype[argc]="" 519 oldf="" 520 while (f < end && $(f+1) != ",") { 521 if (argtype[argc] != "" && oldf != "*") 522 argtype[argc] = argtype[argc]" "; 523 argtype[argc] = argtype[argc]$f; 524 oldf = $f; 525 f++ 526 } 527 if (argtype[argc] == "") 528 parserr($f, "argument definition") 529 if (argtype[argc] == "off_t" \ 530 || argtype[argc] == "dev_t" \ 531 || argtype[argc] == "time_t") { 532 if ((argalign % 2) != 0 && sysalign && 533 funcname != "sys_posix_fadvise") # XXX for now 534 parserr($f, "a padding argument") 535 } else { 536 argalign++; 537 } 538 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 539 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 540 if (sycall_flags == "0") 541 sycall_flags = "SYCALL_ARG"argc-1"_64"; 542 else 543 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 544 args64++; 545 } 546 argname[argc]=$f; 547 f += 2; # skip name, and any comma 548 } 549 if (args64 > 0) 550 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 551 # must see another argument after varargs notice. 552 if (isvarargs) { 553 if (argc == varargc) 554 parserr($f, "argument definition") 555 } else 556 varargc = argc; 557 } 558 559 function printproto(wrap) { 560 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 561 returntype) > sysnumhdr 562 for (i = 1; i <= varargc; i++) 563 printf(" \"%s\"", argtype[i]) > sysnumhdr 564 if (isvarargs) 565 printf(" \"...\"") > sysnumhdr 566 printf(" */\n") > sysnumhdr 567 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 568 syscall) > sysnumhdr 569 570 # rumpalooza 571 if (!rumpable) 572 return 573 574 if (wantrename) 575 printf("%s rump_%s(", returntype, funcstdname) > rumpcallshdr 576 else 577 printf("%s rump_sys_%s(", returntype, funcalias) > rumpcallshdr 578 for (i = 1; i < varargc; i++) 579 if (argname[i] != "PAD") 580 printf("%s, ", argtype[i]) > rumpcallshdr 581 if (isvarargs) 582 printf("%s, ...)", argtype[varargc]) > rumpcallshdr 583 else 584 printf("%s)", argtype[argc]) > rumpcallshdr 585 if (wantrename) 586 printf(" __RENAME(rump_%s)", funcname) > rumpcallshdr 587 printf(";\n") > rumpcallshdr 588 } 589 590 function printrumpsysent(insysent, compatwrap) { 591 if (!insysent) { 592 eno[0] = "rump_enosys" 593 eno[1] = "sys_nomodule" 594 flags[0] = "SYCALL_NOSYS" 595 flags[1] = "0" 596 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 597 "/* %d = %s */\n", \ 598 flags[modular], eno[modular], syscall, funcalias) \ 599 > rumpsysent 600 return 601 } 602 603 printf("\t{ ") > rumpsysent 604 if (argc == 0) { 605 printf("0, 0, ") > rumpsysent 606 } else { 607 printf("ns(struct sys_%s%s_args), ", compatwrap_, funcalias) > rumpsysent 608 } 609 printf("0,\n\t %s },", wfn) > rumpsysent 610 for (i = 0; i < (33 - length(wfn)) / 8; i++) 611 printf("\t") > rumpsysent 612 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 613 } 614 615 function putent(type, compatwrap) { 616 # output syscall declaration for switch table. 617 if (compatwrap == "") 618 compatwrap_ = "" 619 else 620 compatwrap_ = compatwrap "_" 621 if (argc == 0) 622 arg_type = "void"; 623 else { 624 arg_type = "struct " compatwrap_ funcname "_args"; 625 } 626 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 627 arg_type " *, register_t *);\n" 628 if (sysmap[proto] != 1) { 629 sysmap[proto] = 1; 630 print proto > sysprotos; 631 } 632 633 # output syscall switch entry 634 printf("\t{ ") > sysent 635 if (argc == 0) { 636 printf("0, 0, ") > sysent 637 } else { 638 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 639 } 640 if (modular) 641 wfn = "(sy_call_t *)sys_nomodule"; 642 else if (compatwrap == "") 643 wfn = "(sy_call_t *)" funcname; 644 else 645 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 646 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 647 for (i = 0; i < (33 - length(wfn)) / 8; i++) 648 printf("\t") > sysent 649 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 650 651 # output syscall name for names table 652 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 653 > sysnamesbottom 654 655 # output syscall number of header, if appropriate 656 if (type == "STD" || type == "NOARGS" || type == "INDIR") { 657 # output a prototype, to be used to generate lint stubs in 658 # libc. 659 printproto("") 660 } else if (type == "COMPAT") { 661 # Just define the syscall number with a comment. These 662 # may be used by compatibility stubs in libc. 663 printproto(compatwrap_) 664 } 665 666 # output syscall argument structure, if it has arguments 667 if (argc != 0) { 668 printf("\nstruct %s%s_args", compatwrap_, funcname) > sysarghdr 669 if (type != "NOARGS") { 670 print " {" >sysarghdr; 671 for (i = 1; i <= argc; i++) 672 printf("\tsyscallarg(%s) %s;\n", argtype[i], 673 argname[i]) > sysarghdr 674 printf "}" >sysarghdr; 675 } 676 printf(";\n") > sysarghdr 677 if (type != "NOARGS" && type != "INDIR") { 678 printf("check_syscall_args(%s%s)\n", compatwrap_, 679 funcname) >sysarghdr 680 } 681 } 682 683 if (!rumpable) { 684 if (funcname == "sys_pipe" && rumphaspipe == 1) 685 insysent = 1 686 else 687 insysent = 0 688 } else { 689 insysent = 1 690 } 691 printrumpsysent(insysent, compatwrap) 692 693 # output rump marshalling code if necessary 694 if (!rumpable) { 695 return 696 } 697 698 # need a local prototype, we export the re-re-named one in .h 699 printf("\n%s rump_sys_%s(", returntype, funcalias) > rumpcalls 700 for (i = 1; i < argc; i++) { 701 if (argname[i] != "PAD") 702 printf("%s, ", argtype[i]) > rumpcalls 703 } 704 printf("%s);", argtype[argc]) > rumpcalls 705 706 printf("\n%s\nrump_sys_%s(", returntype, funcalias) > rumpcalls 707 for (i = 1; i < argc; i++) { 708 if (argname[i] != "PAD") 709 printf("%s %s, ", argtype[i], argname[i]) > rumpcalls 710 } 711 printf("%s %s)\n", argtype[argc], argname[argc]) > rumpcalls 712 printf("{\n\tregister_t rval[2] = {0, 0};\n\tint error = 0;\n") \ 713 > rumpcalls 714 715 argarg = "NULL" 716 argsize = 0; 717 if (argc) { 718 argarg = "&callarg" 719 argsize = "sizeof(callarg)" 720 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 721 > rumpcalls 722 for (i = 1; i <= argc; i++) { 723 if (argname[i] == "PAD") { 724 printf("\tSPARG(&callarg, %s) = 0;\n", \ 725 argname[i]) > rumpcalls 726 } else { 727 printf("\tSPARG(&callarg, %s) = %s;\n", \ 728 argname[i], argname[i]) > rumpcalls 729 } 730 } 731 printf("\n") > rumpcalls 732 } else { 733 printf("\n") > rumpcalls 734 } 735 printf("\terror = rsys_syscall(%s%s, " \ 736 "%s, %s, rval);\n", constprefix, funcalias, \ 737 argarg, argsize) > rumpcalls 738 printf("\tif (error) {\n\t\trval[0] = -1;\n") > rumpcalls 739 if (returntype != "void") { 740 printf("\t\trsys_seterrno(error);\n\t}\n") > rumpcalls 741 printf("\treturn rval[0];\n") > rumpcalls 742 } else { 743 printf("\t}\n") > rumpcalls 744 } 745 printf("}\n") > rumpcalls 746 printf("rsys_alias(%s,rump_enosys)\n", funcname) > rumpcalls 747 748 } 749 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" { 750 parseline() 751 putent($2, "") 752 syscall++ 753 next 754 } 755 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 756 if ($2 == "OBSOL") 757 comment="obsolete" 758 else if ($2 == "EXCL") 759 comment="excluded" 760 else if ($2 == "IGNORED") 761 comment="ignored" 762 else 763 comment="unimplemented" 764 for (i = 3; i <= NF; i++) 765 comment=comment " " $i 766 767 if ($2 == "IGNORED") 768 sys_stub = "(sy_call_t *)nullop"; 769 else 770 sys_stub = sys_nosys; 771 772 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 773 sys_stub, syscall, comment) > sysent 774 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 775 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 776 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 777 > sysnamesbottom 778 if ($2 != "UNIMPL") 779 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 780 syscall++ 781 next 782 } 783 { 784 for (i = 1; i <= ncompat; i++) { 785 if ($2 == compat_upper[i]) { 786 parseline(); 787 putent("COMPAT", compat[i]) 788 syscall++ 789 next 790 } 791 } 792 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 793 exit 1 794 } 795 END { 796 # output pipe() syscall with its special rval[2] handling 797 if (rumphaspipe) { 798 printf("int rump_sys_pipe(int *);\n") > rumpcallshdr 799 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 800 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 801 printf("\tregister_t rval[2] = {0, 0};\n") > rumpcalls 802 printf("\tint error = 0;\n") > rumpcalls 803 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 804 printf("NULL, 0, rval);\n") > rumpcalls 805 printf("\tif (error) {\n") > rumpcalls 806 printf("\t\trsys_seterrno(error);\n") > rumpcalls 807 printf("\t} else {\n\t\tfd[0] = rval[0];\n") > rumpcalls 808 printf("\t\tfd[1] = rval[1];\n\t}\n") > rumpcalls 809 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 810 } 811 812 maxsyscall = syscall 813 if (nsysent) { 814 if (syscall > nsysent) { 815 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 816 exit 1 817 } 818 while (syscall < nsysent) { 819 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 820 sys_nosys, syscall) > sysent 821 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 822 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 823 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 824 > sysnamesbottom 825 syscall++ 826 } 827 } 828 printf("};\n") > sysent 829 printf("};\n") > rumpsysent 830 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 831 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 832 printf("};\n") > sysnamesbottom 833 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 834 if (nsysent) 835 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 836 } ' 837 838 cat $sysprotos >> $sysarghdr 839 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 840 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 841 printf "\n#include <rump/rump_syscalls_compat.h>\n" >> $rumpcallshdr 842 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpcallshdr 843 cat $sysdcl $sysent > $syssw 844 cat $sysnamesbottom >> $sysnames 845 cat $rumpsysent >> $rumpcalls 846 847 #chmod 444 $sysnames $sysnumhdr $syssw 848
Indexes created Sun Oct 12 09:09:55 GMT 2025