makesyscalls.sh revision 1.119.2.3
1 # $NetBSD: makesyscalls.sh,v 1.119.2.3 2013/01/23 00:06:21 yamt 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 "static int\nrsys_syscall" > rumpcalls 249 printf "(int num, void *data, size_t dlen, register_t *retval)" > rumpcalls 250 printf "\n{\n\tstruct sysent *callp = rump_sysent + num;\n" > rumpcalls 251 printf "\tint rv;\n" > rumpcalls 252 printf "\n\tKASSERT(num > 0 && num < SYS_NSYSENT);\n\n" > rumpcalls 253 printf "\trump_schedule();\n" > rumpcalls 254 printf "\trv = sy_call(callp, curlwp, data, retval);\n" > rumpcalls 255 printf "\trump_unschedule();\n\n\treturn rv;\n}\n\n" > rumpcalls 256 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 257 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 258 259 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 260 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 261 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 262 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 263 printf "#endif\n\n" > rumpcalls 264 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 265 printf "int rump_enosys(void);\n" > rumpcalls 266 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 267 printf "#endif\n" > rumpcalls 268 269 printf "\n#ifndef RUMP_CLIENT\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 <sys/types.h> /* typedefs */\n" > rumpcallshdr 297 printf "#include <sys/select.h> /* typedefs */\n" > rumpcallshdr 298 printf "#include <sys/socket.h> /* typedefs */\n\n" > rumpcallshdr 299 printf "#include <signal.h> /* typedefs */\n\n" > rumpcallshdr 300 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 301 302 printf "%s", sysarghdrextra > sysarghdr 303 # Write max number of system call arguments to both headers 304 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 305 > sysnumhdr 306 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 307 > sysarghdr 308 printf "#undef\tsyscallarg\n" > sysarghdr 309 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 310 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 311 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 312 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 313 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 314 > sysarghdr 315 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 316 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 317 registertype > sysarghdr 318 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 319 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 320 registertype > sysarghdr 321 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 322 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 323 printf "\t}\n" > sysarghdr 324 printf("\n#undef check_syscall_args\n") >sysarghdr 325 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 326 "\ttypedef char call##_check_args" \ 327 "[sizeof (struct call##_args) \\\n" \ 328 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 329 constprefix, registertype) >sysarghdr 330 331 # compat types from syscalls.master. this is slightly ugly, 332 # but given that we have so few compats from over 17 years, 333 # a more complicated solution is not currently warranted. 334 uncompattypes["struct timeval50"] = "struct timeval"; 335 uncompattypes["struct timespec50"] = "struct timespec"; 336 uncompattypes["struct stat30"] = "struct stat"; 337 338 next 339 } 340 NF == 0 || $1 ~ /^;/ { 341 next 342 } 343 $0 ~ /^%%$/ { 344 intable = 1 345 next 346 } 347 $1 ~ /^#[ ]*include/ { 348 print > sysdcl 349 print > sysnames 350 next 351 } 352 $1 ~ /^#/ && !intable { 353 print > sysdcl 354 print > sysnames 355 next 356 } 357 $1 ~ /^#/ && intable { 358 if ($1 ~ /^#[ ]*if/) { 359 savedepth++ 360 savesyscall[savedepth] = syscall 361 } 362 if ($1 ~ /^#[ ]*else/) { 363 if (savedepth <= 0) { 364 printf("%s: line %d: unbalanced #else\n", \ 365 infile, NR) 366 exit 1 367 } 368 syscall = savesyscall[savedepth] 369 } 370 if ($1 ~ /^#[ ]*endif/) { 371 if (savedepth <= 0) { 372 printf("%s: line %d: unbalanced #endif\n", \ 373 infile, NR) 374 exit 1 375 } 376 savedepth-- 377 } 378 print > sysent 379 print > sysarghdr 380 print > sysnumhdr 381 print > sysprotos 382 print > sysnamesbottom 383 384 # XXX: technically we do not want to have conditionals in rump, 385 # but it is easier to just let the cpp handle them than try to 386 # figure out what we want here in this script 387 print > rumpsysent 388 next 389 } 390 syscall != $1 { 391 printf "%s: line %d: syscall number out of sync at %d\n", \ 392 infile, NR, syscall 393 printf "line is:\n" 394 print 395 exit 1 396 } 397 function parserr(was, wanted) { 398 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 399 infile, NR, was, wanted 400 printf "line is:\n" 401 print 402 exit 1 403 } 404 function parseline() { 405 f=3 # toss number and type 406 if ($2 == "INDIR") 407 sycall_flags="SYCALL_INDIRECT" 408 else 409 sycall_flags="0" 410 if ($NF != "}") { 411 funcalias=$NF 412 end=NF-1 413 } else { 414 funcalias="" 415 end=NF 416 } 417 if ($f == "INDIR") { # allow for "NOARG INDIR" 418 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 419 f++ 420 } 421 if ($f == "MODULAR") { # registered at runtime 422 modular = 1 423 f++ 424 } else { 425 modular = 0; 426 } 427 if ($f == "RUMP") { 428 rumpable = 1 429 f++ 430 } else { 431 rumpable = 0 432 } 433 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 434 funcalias=$f 435 f++ 436 } 437 if ($f != "{") 438 parserr($f, "{") 439 f++ 440 if ($end != "}") 441 parserr($end, "}") 442 end-- 443 if ($end != ";") 444 parserr($end, ";") 445 end-- 446 if ($end != ")") 447 parserr($end, ")") 448 end-- 449 450 returntype = oldf = ""; 451 do { 452 if (returntype != "" && oldf != "*") 453 returntype = returntype" "; 454 returntype = returntype$f; 455 oldf = $f; 456 f++ 457 } while ($f != "|" && f < (end-1)) 458 if (f == (end - 1)) { 459 parserr($f, "function argument definition (maybe \"|\"?)"); 460 } 461 f++ 462 463 fprefix=$f 464 f++ 465 if ($f != "|") { 466 parserr($f, "function compat delimiter (maybe \"|\"?)"); 467 } 468 f++ 469 470 fcompat="" 471 if ($f != "|") { 472 fcompat=$f 473 f++ 474 } 475 476 if ($f != "|") { 477 parserr($f, "function name delimiter (maybe \"|\"?)"); 478 } 479 f++ 480 fbase=$f 481 482 # pipe is special in how to returns its values. 483 # So just generate it manually if present. 484 if (rumpable == 1 && fbase == "pipe") { 485 rumpable = 0; 486 rumphaspipe = 1; 487 } 488 489 if (fcompat != "") { 490 funcname=fprefix "___" fbase "" fcompat 491 } else { 492 funcname=fprefix "_" fbase 493 } 494 if (returntype == "quad_t" || returntype == "off_t") { 495 if (sycall_flags == "0") 496 sycall_flags = "SYCALL_RET_64"; 497 else 498 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 499 } 500 501 if (funcalias == "") { 502 funcalias=funcname 503 sub(/^([^_]+_)*sys_/, "", funcalias) 504 realname=fbase 505 } else { 506 realname=funcalias 507 } 508 rumpfname=realname "" fcompat 509 f++ 510 511 if ($f != "(") 512 parserr($f, "(") 513 f++ 514 515 argc=0; 516 argalign=0; 517 if (f == end) { 518 if ($f != "void") 519 parserr($f, "argument definition") 520 isvarargs = 0; 521 varargc = 0; 522 argtype[0]="void"; 523 return 524 } 525 526 # some system calls (open() and fcntl()) can accept a variable 527 # number of arguments. If syscalls accept a variable number of 528 # arguments, they must still have arguments specified for 529 # the remaining argument "positions," because of the way the 530 # kernel system call argument handling works. 531 # 532 # Indirect system calls, e.g. syscall(), are exceptions to this 533 # rule, since they are handled entirely by machine-dependent code 534 # and do not need argument structures built. 535 536 isvarargs = 0; 537 args64 = 0; 538 ptr = 0; 539 while (f <= end) { 540 if ($f == "...") { 541 f++; 542 isvarargs = 1; 543 varargc = argc; 544 continue; 545 } 546 argc++ 547 argtype[argc]="" 548 oldf="" 549 while (f < end && $(f+1) != ",") { 550 if (argtype[argc] != "" && oldf != "*") 551 argtype[argc] = argtype[argc]" "; 552 argtype[argc] = argtype[argc]$f; 553 oldf = $f; 554 f++ 555 } 556 if (argtype[argc] == "") 557 parserr($f, "argument definition") 558 if (argtype[argc] == "off_t" \ 559 || argtype[argc] == "dev_t" \ 560 || argtype[argc] == "time_t") { 561 if ((argalign % 2) != 0 && sysalign && 562 funcname != "sys_posix_fadvise") # XXX for now 563 parserr($f, "a padding argument") 564 } else { 565 argalign++; 566 } 567 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 568 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 569 if (sycall_flags == "0") 570 sycall_flags = "SYCALL_ARG"argc-1"_64"; 571 else 572 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 573 args64++; 574 } 575 if (index(argtype[argc], "*") != 0 && ptr == 0) { 576 if (sycall_flags == "0") 577 sycall_flags = "SYCALL_ARG_PTR"; 578 else 579 sycall_flags = "SYCALL_ARG_PTR | " sycall_flags; 580 ptr = 1; 581 } 582 argname[argc]=$f; 583 f += 2; # skip name, and any comma 584 } 585 if (args64 > 0) 586 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 587 # must see another argument after varargs notice. 588 if (isvarargs) { 589 if (argc == varargc) 590 parserr($f, "argument definition") 591 } else 592 varargc = argc; 593 } 594 595 function printproto(wrap) { 596 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 597 returntype) > sysnumhdr 598 for (i = 1; i <= varargc; i++) 599 printf(" \"%s\"", argtype[i]) > sysnumhdr 600 if (isvarargs) 601 printf(" \"...\"") > sysnumhdr 602 printf(" */\n") > sysnumhdr 603 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 604 syscall) > sysnumhdr 605 606 # rumpalooza 607 if (!rumpable) 608 return 609 610 # accumulate fbases we have seen. we want the last 611 # occurence for the default __RENAME() 612 seen = funcseen[fbase] 613 funcseen[fbase] = rumpfname 614 if (seen) 615 return 616 617 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 618 619 for (i = 1; i < varargc; i++) 620 if (argname[i] != "PAD") 621 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 622 623 if (isvarargs) 624 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 625 else 626 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 627 628 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 629 printf(";\n") > rumpprotos 630 631 # generate forward-declares for types, apart from the 632 # braindead typedef jungle we cannot easily handle here 633 for (i = 1; i <= varargc; i++) { 634 type=uncompattype(argtype[i]) 635 sub("const ", "", type) 636 if (!typeseen[type] && \ 637 match(type, "struct") && match(type, "\\*")) { 638 typeseen[type] = 1 639 sub(" *\\*", "", type); 640 printf("%s;\n", type) > rumptypes 641 } 642 } 643 } 644 645 function printrumpsysent(insysent, compatwrap) { 646 if (!insysent) { 647 eno[0] = "rump_enosys" 648 eno[1] = "sys_nomodule" 649 flags[0] = "SYCALL_NOSYS" 650 flags[1] = "0" 651 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 652 "/* %d = %s */\n", \ 653 flags[modular], eno[modular], syscall, funcalias) \ 654 > rumpsysent 655 return 656 } 657 658 printf("\t{ ") > rumpsysent 659 if (argc == 0) { 660 printf("0, 0, ") > rumpsysent 661 } else { 662 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 663 } 664 665 if (compatwrap == "") { 666 if (modular) 667 rfn = "(sy_call_t *)sys_nomodule" 668 else 669 rfn = "(sy_call_t *)" funcname 670 } else { 671 rfn = "(sy_call_t *)" compatwrap "_" funcname 672 } 673 674 printf("0,\n\t %s },", rfn) > rumpsysent 675 for (i = 0; i < (33 - length(rfn)) / 8; i++) 676 printf("\t") > rumpsysent 677 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 678 } 679 680 function iscompattype(type) { 681 for (var in uncompattypes) { 682 if (match(type, var)) { 683 return 1 684 } 685 } 686 687 return 0 688 } 689 690 function uncompattype(type) { 691 for (var in uncompattypes) { 692 if (match(type, var)) { 693 sub(var, uncompattypes[var], type) 694 return type 695 } 696 } 697 698 return type 699 } 700 701 function putent(type, compatwrap) { 702 # output syscall declaration for switch table. 703 if (compatwrap == "") 704 compatwrap_ = "" 705 else 706 compatwrap_ = compatwrap "_" 707 if (argc == 0) 708 arg_type = "void"; 709 else { 710 arg_type = "struct " compatwrap_ funcname "_args"; 711 } 712 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 713 arg_type " *, register_t *);\n" 714 if (sysmap[proto] != 1) { 715 sysmap[proto] = 1; 716 print proto > sysprotos; 717 } 718 719 # output syscall switch entry 720 printf("\t{ ") > sysent 721 if (argc == 0) { 722 printf("0, 0, ") > sysent 723 } else { 724 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 725 } 726 if (modular) 727 wfn = "(sy_call_t *)sys_nomodule"; 728 else if (compatwrap == "") 729 wfn = "(sy_call_t *)" funcname; 730 else 731 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 732 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 733 for (i = 0; i < (33 - length(wfn)) / 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 else 779 insysent = 0 780 } else { 781 insysent = 1 782 } 783 printrumpsysent(insysent, compatwrap) 784 785 # output rump marshalling code if necessary 786 if (!rumpable) { 787 return 788 } 789 790 # need a local prototype, we export the re-re-named one in .h 791 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 792 > rumpcalls 793 for (i = 1; i < argc; i++) { 794 if (argname[i] != "PAD") 795 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 796 } 797 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 798 799 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 800 for (i = 1; i < argc; i++) { 801 if (argname[i] != "PAD") 802 printf("%s %s, ", uncompattype(argtype[i]), \ 803 argname[i]) > rumpcalls 804 } 805 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 806 > rumpcalls 807 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 808 if (returntype != "void") { 809 if (type != "NOERR") { 810 printf("\tint error = 0;\n") > rumpcalls 811 } 812 # assume rumpcalls return only integral types 813 printf("\t%s rv = -1;\n", returntype) > rumpcalls 814 } 815 816 argarg = "NULL" 817 argsize = 0; 818 if (argc) { 819 argarg = "&callarg" 820 argsize = "sizeof(callarg)" 821 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 822 > rumpcalls 823 for (i = 1; i <= argc; i++) { 824 if (argname[i] == "PAD") { 825 printf("\tSPARG(&callarg, %s) = 0;\n", \ 826 argname[i]) > rumpcalls 827 } else { 828 if (iscompattype(argtype[i])) { 829 printf("\tSPARG(&callarg, %s) = " \ 830 "(%s)%s;\n", argname[i], argtype[i], \ 831 argname[i]) > rumpcalls 832 } else { 833 printf("\tSPARG(&callarg, %s) = %s;\n",\ 834 argname[i], argname[i]) > rumpcalls 835 } 836 } 837 } 838 printf("\n") > rumpcalls 839 } else { 840 printf("\n") > rumpcalls 841 } 842 printf("\t") > rumpcalls 843 if (returntype != "void" && type != "NOERR") 844 printf("error = ") > rumpcalls 845 printf("rsys_syscall(%s%s%s, " \ 846 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 847 argarg, argsize) > rumpcalls 848 if (type != "NOERR") { 849 printf("\trsys_seterrno(error);\n") > rumpcalls 850 printf("\tif (error == 0) {\n") > rumpcalls 851 indent="\t\t" 852 ending="\t}\n" 853 } else { 854 indent="\t" 855 ending="" 856 } 857 if (returntype != "void") { 858 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 859 indent, returntype) > rumpcalls 860 printf("%s\trv = *(%s *)retval;\n", \ 861 indent, returntype) > rumpcalls 862 printf("%selse\n", indent, indent) > rumpcalls 863 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 864 printf("%s", ending) > rumpcalls 865 printf("\treturn rv;\n") > rumpcalls 866 } 867 printf("}\n") > rumpcalls 868 printf("rsys_alias(%s%s,rump_enosys)\n", \ 869 compatwrap_, funcname) > rumpcalls 870 871 } 872 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 873 || $2 == "NOERR" { 874 parseline() 875 putent($2, "") 876 syscall++ 877 next 878 } 879 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 880 if ($2 == "OBSOL") 881 comment="obsolete" 882 else if ($2 == "EXCL") 883 comment="excluded" 884 else if ($2 == "IGNORED") 885 comment="ignored" 886 else 887 comment="unimplemented" 888 for (i = 3; i <= NF; i++) 889 comment=comment " " $i 890 891 if ($2 == "IGNORED") 892 sys_stub = "(sy_call_t *)nullop"; 893 else 894 sys_stub = sys_nosys; 895 896 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 897 sys_stub, syscall, comment) > sysent 898 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 899 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 900 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 901 > sysnamesbottom 902 if ($2 != "UNIMPL") 903 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 904 syscall++ 905 next 906 } 907 $2 == "EXTERN" { 908 parseline() 909 putent("EXTERN", "") 910 syscall++ 911 next 912 } 913 { 914 for (i = 1; i <= ncompat; i++) { 915 if ($2 == compat_upper[i]) { 916 parseline(); 917 putent("COMPAT", compat[i]) 918 syscall++ 919 next 920 } 921 } 922 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 923 exit 1 924 } 925 END { 926 # output pipe() syscall with its special retval[2] handling 927 if (rumphaspipe) { 928 printf("int rump_sys_pipe(int *);\n") > rumpprotos 929 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 930 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 931 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 932 printf("\tint error = 0;\n") > rumpcalls 933 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 934 printf("NULL, 0, retval);\n") > rumpcalls 935 printf("\tif (error) {\n") > rumpcalls 936 printf("\t\trsys_seterrno(error);\n") > rumpcalls 937 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 938 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 939 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 940 } 941 942 # print default rump syscall interfaces 943 for (var in funcseen) { 944 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 945 toupper(var)) > rumpcallshdr 946 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 947 toupper(var), funcseen[var]) > rumpcallshdr 948 printf("#endif\n\n") > rumpcallshdr 949 } 950 951 maxsyscall = syscall 952 if (nsysent) { 953 if (syscall > nsysent) { 954 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 955 exit 1 956 } 957 while (syscall < nsysent) { 958 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 959 sys_nosys, syscall) > sysent 960 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 961 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 962 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 963 > sysnamesbottom 964 syscall++ 965 } 966 } 967 printf("};\n") > sysent 968 printf("};\n") > rumpsysent 969 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 970 printf("__strong_alias(sysent,rump_sysent);\n") > rumpsysent 971 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 972 if (haverumpcalls) 973 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 974 printf("};\n") > sysnamesbottom 975 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 976 if (nsysent) 977 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 978 } ' 979 980 cat $sysprotos >> $sysarghdr 981 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 982 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 983 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 984 cat $sysdcl $sysent > $syssw 985 cat $sysnamesbottom >> $sysnames 986 cat $rumpsysent >> $rumpcalls 987 988 touch $rumptypes 989 cat $rumptypes >> $rumpcallshdr 990 echo >> $rumpcallshdr 991 cat $rumpprotos >> $rumpcallshdr 992 993 #chmod 444 $sysnames $sysnumhdr $syssw 994
Indexes created Sun Oct 12 09:09:55 GMT 2025