makesyscalls.sh revision 1.128.6.1
1 # $NetBSD: makesyscalls.sh,v 1.128.6.1 2013/08/28 23:59:35 rmind 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 proc *p;\n" > rumpcalls 251 printf "\tstruct emul *e;\n" > rumpcalls 252 printf "\tstruct sysent *callp;\n" > rumpcalls 253 printf "\tint rv;\n\n" > rumpcalls 254 printf "\trump_schedule();\n" > rumpcalls 255 printf "\tp = curproc;\n" > rumpcalls 256 printf "\te = p->p_emul;\n" > rumpcalls 257 printf "#ifndef __HAVE_MINIMAL_EMUL\n" > rumpcalls 258 printf "\tKASSERT(num > 0 && num < e->e_nsysent);\n" > rumpcalls 259 printf "#endif\n" > rumpcalls 260 printf "\tcallp = e->e_sysent + num;\n\n" > rumpcalls 261 printf "\trv = sy_call(callp, curlwp, data, retval);\n" > rumpcalls 262 printf "\trump_unschedule();\n\n\treturn rv;\n}\n\n" > rumpcalls 263 printf "#define rsys_seterrno(error) rumpuser_seterrno(error)\n" > rumpcalls 264 printf "#define rsys_alias(a,b) __weak_alias(a,b);\n#endif\n\n" > rumpcalls 265 266 printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls 267 printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls 268 printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls 269 printf "#define SPARG(p,k)\t((p)->k.le.datum)\n" > rumpcalls 270 printf "#endif\n\n" > rumpcalls 271 printf "#ifndef RUMP_CLIENT\n" > rumpcalls 272 printf "int rump_enosys(void);\n" > rumpcalls 273 printf "int\nrump_enosys()\n{\n\n\treturn ENOSYS;\n}\n" > rumpcalls 274 printf "#endif\n" > rumpcalls 275 276 printf "\n#ifndef RUMP_CLIENT\n" > rumpsysent 277 printf "#define\ts(type)\tsizeof(type)\n" > rumpsysent 278 printf "#define\tn(type)\t(sizeof(type)/sizeof (%s))\n", registertype > rumpsysent 279 printf "#define\tns(type)\tn(type), s(type)\n\n", registertype > rumpsysent 280 printf "struct sysent rump_sysent[] = {\n" > rumpsysent 281 282 # System call names are included by userland (kdump(1)), so 283 # hide the include files from it. 284 printf "#if defined(_KERNEL_OPT)\n" > sysnames 285 286 printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom 287 printf "const char *const %s[] = {\n",namesname > sysnamesbottom 288 289 printf " * created from%s\n */\n\n", $0 > sysnumhdr 290 printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr 291 printf "#define _" constprefix "SYSCALL_H_\n\n" > sysnumhdr 292 293 printf " * created from%s\n */\n\n", $0 > sysarghdr 294 printf "#ifndef _" constprefix "SYSCALLARGS_H_\n" > sysarghdr 295 printf "#define _" constprefix "SYSCALLARGS_H_\n\n" > sysarghdr 296 297 printf " * created from%s\n */\n\n", $0 > rumpcallshdr 298 printf "#ifndef _RUMP_RUMP_SYSCALLS_H_\n" > rumpcallshdr 299 printf "#define _RUMP_RUMP_SYSCALLS_H_\n\n" > rumpcallshdr 300 printf "#ifdef _KERNEL\n" > rumpcallshdr 301 printf "#error Interface not supported inside kernel\n" > rumpcallshdr 302 printf "#endif /* _KERNEL */\n\n" > rumpcallshdr 303 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 304 305 printf "%s", sysarghdrextra > sysarghdr 306 # Write max number of system call arguments to both headers 307 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 308 > sysnumhdr 309 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 310 > sysarghdr 311 printf "#undef\tsyscallarg\n" > sysarghdr 312 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 313 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 314 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 315 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 316 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 317 > sysarghdr 318 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 319 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 320 registertype > sysarghdr 321 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 322 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 323 registertype > sysarghdr 324 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 325 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 326 printf "\t}\n" > sysarghdr 327 printf("\n#undef check_syscall_args\n") >sysarghdr 328 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 329 "\ttypedef char call##_check_args" \ 330 "[sizeof (struct call##_args) \\\n" \ 331 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 332 constprefix, registertype) >sysarghdr 333 334 # compat types from syscalls.master. this is slightly ugly, 335 # but given that we have so few compats from over 17 years, 336 # a more complicated solution is not currently warranted. 337 uncompattypes["struct timeval50"] = "struct timeval"; 338 uncompattypes["struct timespec50"] = "struct timespec"; 339 uncompattypes["struct stat30"] = "struct stat"; 340 341 next 342 } 343 NF == 0 || $1 ~ /^;/ { 344 next 345 } 346 $0 ~ /^%%$/ { 347 intable = 1 348 next 349 } 350 $1 ~ /^#[ ]*include/ { 351 print > sysdcl 352 print > sysnames 353 next 354 } 355 $1 ~ /^#/ && !intable { 356 print > sysdcl 357 print > sysnames 358 next 359 } 360 $1 ~ /^#/ && intable { 361 if ($1 ~ /^#[ ]*if/) { 362 savedepth++ 363 savesyscall[savedepth] = syscall 364 } 365 if ($1 ~ /^#[ ]*else/) { 366 if (savedepth <= 0) { 367 printf("%s: line %d: unbalanced #else\n", \ 368 infile, NR) 369 exit 1 370 } 371 syscall = savesyscall[savedepth] 372 } 373 if ($1 ~ /^#[ ]*endif/) { 374 if (savedepth <= 0) { 375 printf("%s: line %d: unbalanced #endif\n", \ 376 infile, NR) 377 exit 1 378 } 379 savedepth-- 380 } 381 print > sysent 382 print > sysarghdr 383 print > sysnumhdr 384 print > sysprotos 385 print > sysnamesbottom 386 387 # XXX: technically we do not want to have conditionals in rump, 388 # but it is easier to just let the cpp handle them than try to 389 # figure out what we want here in this script 390 print > rumpsysent 391 next 392 } 393 syscall != $1 { 394 printf "%s: line %d: syscall number out of sync at %d\n", \ 395 infile, NR, syscall 396 printf "line is:\n" 397 print 398 exit 1 399 } 400 function parserr(was, wanted) { 401 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 402 infile, NR, was, wanted 403 printf "line is:\n" 404 print 405 exit 1 406 } 407 function parseline() { 408 f=3 # toss number and type 409 if ($2 == "INDIR") 410 sycall_flags="SYCALL_INDIRECT" 411 else 412 sycall_flags="0" 413 if ($NF != "}") { 414 funcalias=$NF 415 end=NF-1 416 } else { 417 funcalias="" 418 end=NF 419 } 420 if ($f == "INDIR") { # allow for "NOARG INDIR" 421 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 422 f++ 423 } 424 if ($f == "MODULAR") { # registered at runtime 425 modular = 1 426 f++ 427 } else { 428 modular = 0; 429 } 430 if ($f == "RUMP") { 431 rumpable = 1 432 f++ 433 } else { 434 rumpable = 0 435 } 436 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 437 funcalias=$f 438 f++ 439 } 440 if ($f != "{") 441 parserr($f, "{") 442 f++ 443 if ($end != "}") 444 parserr($end, "}") 445 end-- 446 if ($end != ";") 447 parserr($end, ";") 448 end-- 449 if ($end != ")") 450 parserr($end, ")") 451 end-- 452 453 returntype = oldf = ""; 454 do { 455 if (returntype != "" && oldf != "*") 456 returntype = returntype" "; 457 returntype = returntype$f; 458 oldf = $f; 459 f++ 460 } while ($f != "|" && f < (end-1)) 461 if (f == (end - 1)) { 462 parserr($f, "function argument definition (maybe \"|\"?)"); 463 } 464 f++ 465 466 fprefix=$f 467 f++ 468 if ($f != "|") { 469 parserr($f, "function compat delimiter (maybe \"|\"?)"); 470 } 471 f++ 472 473 fcompat="" 474 if ($f != "|") { 475 fcompat=$f 476 f++ 477 } 478 479 if ($f != "|") { 480 parserr($f, "function name delimiter (maybe \"|\"?)"); 481 } 482 f++ 483 fbase=$f 484 485 # pipe is special in how to returns its values. 486 # So just generate it manually if present. 487 if (rumpable == 1 && fbase == "pipe") { 488 rumpable = 0; 489 rumphaspipe = 1; 490 } 491 492 if (fcompat != "") { 493 funcname=fprefix "___" fbase "" fcompat 494 } else { 495 funcname=fprefix "_" fbase 496 } 497 if (returntype == "quad_t" || returntype == "off_t") { 498 if (sycall_flags == "0") 499 sycall_flags = "SYCALL_RET_64"; 500 else 501 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 502 } 503 504 if (funcalias == "") { 505 funcalias=funcname 506 sub(/^([^_]+_)*sys_/, "", funcalias) 507 realname=fbase 508 } else { 509 realname=funcalias 510 } 511 rumpfname=realname "" fcompat 512 f++ 513 514 if ($f != "(") 515 parserr($f, "(") 516 f++ 517 518 argc=0; 519 argalign=0; 520 if (f == end) { 521 if ($f != "void") 522 parserr($f, "argument definition") 523 isvarargs = 0; 524 varargc = 0; 525 argtype[0]="void"; 526 return 527 } 528 529 # some system calls (open() and fcntl()) can accept a variable 530 # number of arguments. If syscalls accept a variable number of 531 # arguments, they must still have arguments specified for 532 # the remaining argument "positions," because of the way the 533 # kernel system call argument handling works. 534 # 535 # Indirect system calls, e.g. syscall(), are exceptions to this 536 # rule, since they are handled entirely by machine-dependent code 537 # and do not need argument structures built. 538 539 isvarargs = 0; 540 args64 = 0; 541 ptr = 0; 542 while (f <= end) { 543 if ($f == "...") { 544 f++; 545 isvarargs = 1; 546 varargc = argc; 547 continue; 548 } 549 argc++ 550 argtype[argc]="" 551 oldf="" 552 while (f < end && $(f+1) != ",") { 553 if (argtype[argc] != "" && oldf != "*") 554 argtype[argc] = argtype[argc]" "; 555 argtype[argc] = argtype[argc]$f; 556 oldf = $f; 557 f++ 558 } 559 if (argtype[argc] == "") 560 parserr($f, "argument definition") 561 if (argtype[argc] == "off_t" \ 562 || argtype[argc] == "dev_t" \ 563 || argtype[argc] == "time_t") { 564 if ((argalign % 2) != 0 && sysalign && 565 funcname != "sys_posix_fadvise") # XXX for now 566 parserr($f, "a padding argument") 567 } else { 568 argalign++; 569 } 570 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 571 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 572 if (sycall_flags == "0") 573 sycall_flags = "SYCALL_ARG"argc-1"_64"; 574 else 575 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 576 args64++; 577 } 578 if (index(argtype[argc], "*") != 0 && ptr == 0) { 579 if (sycall_flags == "0") 580 sycall_flags = "SYCALL_ARG_PTR"; 581 else 582 sycall_flags = "SYCALL_ARG_PTR | " sycall_flags; 583 ptr = 1; 584 } 585 argname[argc]=$f; 586 f += 2; # skip name, and any comma 587 } 588 if (args64 > 0) 589 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 590 # must see another argument after varargs notice. 591 if (isvarargs) { 592 if (argc == varargc) 593 parserr($f, "argument definition") 594 } else 595 varargc = argc; 596 } 597 598 function printproto(wrap) { 599 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 600 returntype) > sysnumhdr 601 for (i = 1; i <= varargc; i++) 602 printf(" \"%s\"", argtype[i]) > sysnumhdr 603 if (isvarargs) 604 printf(" \"...\"") > sysnumhdr 605 printf(" */\n") > sysnumhdr 606 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 607 syscall) > sysnumhdr 608 609 # rumpalooza 610 if (!rumpable) 611 return 612 613 # accumulate fbases we have seen. we want the last 614 # occurence for the default __RENAME() 615 seen = funcseen[fbase] 616 funcseen[fbase] = rumpfname 617 if (seen) 618 return 619 620 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 621 622 for (i = 1; i < varargc; i++) 623 if (argname[i] != "PAD") 624 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 625 626 if (isvarargs) 627 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 628 else 629 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 630 631 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 632 printf(";\n") > rumpprotos 633 634 # generate forward-declares for types, apart from the 635 # braindead typedef jungle we cannot easily handle here 636 for (i = 1; i <= varargc; i++) { 637 type=uncompattype(argtype[i]) 638 sub("const ", "", type) 639 if (!typeseen[type] && \ 640 match(type, "struct") && match(type, "\\*")) { 641 typeseen[type] = 1 642 sub(" *\\*", "", type); 643 printf("%s;\n", type) > rumptypes 644 } 645 } 646 } 647 648 function printrumpsysent(insysent, compatwrap) { 649 if (!insysent) { 650 eno[0] = "rump_enosys" 651 eno[1] = "sys_nomodule" 652 flags[0] = "SYCALL_NOSYS" 653 flags[1] = "0" 654 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 655 "/* %d = %s */\n", \ 656 flags[modular], eno[modular], syscall, funcalias) \ 657 > rumpsysent 658 return 659 } 660 661 printf("\t{ ") > rumpsysent 662 if (argc == 0) { 663 printf("0, 0, ") > rumpsysent 664 } else { 665 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 666 } 667 668 if (compatwrap == "") { 669 if (modular) 670 rfn = "(sy_call_t *)sys_nomodule" 671 else 672 rfn = "(sy_call_t *)" funcname 673 } else { 674 rfn = "(sy_call_t *)" compatwrap "_" funcname 675 } 676 677 printf("0,\n\t %s },", rfn) > rumpsysent 678 for (i = 0; i < (33 - length(rfn)) / 8; i++) 679 printf("\t") > rumpsysent 680 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 681 } 682 683 function iscompattype(type) { 684 for (var in uncompattypes) { 685 if (match(type, var)) { 686 return 1 687 } 688 } 689 690 return 0 691 } 692 693 function uncompattype(type) { 694 for (var in uncompattypes) { 695 if (match(type, var)) { 696 sub(var, uncompattypes[var], type) 697 return type 698 } 699 } 700 701 return type 702 } 703 704 function putent(type, compatwrap) { 705 # output syscall declaration for switch table. 706 if (compatwrap == "") 707 compatwrap_ = "" 708 else 709 compatwrap_ = compatwrap "_" 710 if (argc == 0) 711 arg_type = "void"; 712 else { 713 arg_type = "struct " compatwrap_ funcname "_args"; 714 } 715 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 716 arg_type " *, register_t *);\n" 717 if (sysmap[proto] != 1) { 718 sysmap[proto] = 1; 719 print proto > sysprotos; 720 } 721 722 # output syscall switch entry 723 printf("\t{ ") > sysent 724 if (argc == 0) { 725 printf("0, 0, ") > sysent 726 } else { 727 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 728 } 729 if (modular) 730 wfn = "(sy_call_t *)sys_nomodule"; 731 else if (compatwrap == "") 732 wfn = "(sy_call_t *)" funcname; 733 else 734 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 735 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 736 for (i = 0; i < (33 - length(wfn)) / 8; i++) 737 printf("\t") > sysent 738 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 739 740 # output syscall name for names table 741 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 742 > sysnamesbottom 743 744 # output syscall number of header, if appropriate 745 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 746 type == "NOERR") { 747 # output a prototype, to be used to generate lint stubs in 748 # libc. 749 printproto("") 750 } else if (type == "COMPAT" || type == "EXTERN") { 751 # Just define the syscall number with a comment. These 752 # may be used by compatibility stubs in libc. 753 printproto(compatwrap_) 754 } 755 756 # output syscall argument structure, if it has arguments 757 if (argc != 0) { 758 printf("\n") > sysarghdr 759 if (haverumpcalls && !rumpable) 760 printf("#ifndef RUMP_CLIENT\n") > sysarghdr 761 printf("struct %s%s_args", compatwrap_, funcname) > sysarghdr 762 if (type != "NOARGS") { 763 print " {" >sysarghdr; 764 for (i = 1; i <= argc; i++) 765 printf("\tsyscallarg(%s) %s;\n", argtype[i], 766 argname[i]) > sysarghdr 767 printf "}" >sysarghdr; 768 } 769 printf(";\n") > sysarghdr 770 if (type != "NOARGS" && type != "INDIR") { 771 printf("check_syscall_args(%s%s)\n", compatwrap_, 772 funcname) >sysarghdr 773 } 774 if (haverumpcalls && !rumpable) 775 printf("#endif /* !RUMP_CLIENT */\n") > sysarghdr 776 } 777 778 if (!rumpable) { 779 if (funcname == "sys_pipe" && rumphaspipe == 1) 780 insysent = 1 781 else 782 insysent = 0 783 } else { 784 insysent = 1 785 } 786 printrumpsysent(insysent, compatwrap) 787 788 # output rump marshalling code if necessary 789 if (!rumpable) { 790 return 791 } 792 793 # need a local prototype, we export the re-re-named one in .h 794 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 795 > rumpcalls 796 for (i = 1; i < argc; i++) { 797 if (argname[i] != "PAD") 798 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 799 } 800 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 801 802 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 803 for (i = 1; i < argc; i++) { 804 if (argname[i] != "PAD") 805 printf("%s %s, ", uncompattype(argtype[i]), \ 806 argname[i]) > rumpcalls 807 } 808 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 809 > rumpcalls 810 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 811 if (returntype != "void") { 812 if (type != "NOERR") { 813 printf("\tint error = 0;\n") > rumpcalls 814 } 815 # assume rumpcalls return only integral types 816 printf("\t%s rv = -1;\n", returntype) > rumpcalls 817 } 818 819 argarg = "NULL" 820 argsize = 0; 821 if (argc) { 822 argarg = "&callarg" 823 argsize = "sizeof(callarg)" 824 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 825 > rumpcalls 826 for (i = 1; i <= argc; i++) { 827 if (argname[i] == "PAD") { 828 printf("\tSPARG(&callarg, %s) = 0;\n", \ 829 argname[i]) > rumpcalls 830 } else { 831 if (iscompattype(argtype[i])) { 832 printf("\tSPARG(&callarg, %s) = " \ 833 "(%s)%s;\n", argname[i], argtype[i], \ 834 argname[i]) > rumpcalls 835 } else { 836 printf("\tSPARG(&callarg, %s) = %s;\n",\ 837 argname[i], argname[i]) > rumpcalls 838 } 839 } 840 } 841 printf("\n") > rumpcalls 842 } else { 843 printf("\n") > rumpcalls 844 } 845 printf("\t") > rumpcalls 846 if (returntype != "void" && type != "NOERR") 847 printf("error = ") > rumpcalls 848 printf("rsys_syscall(%s%s%s, " \ 849 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 850 argarg, argsize) > rumpcalls 851 if (type != "NOERR") { 852 printf("\trsys_seterrno(error);\n") > rumpcalls 853 printf("\tif (error == 0) {\n") > rumpcalls 854 indent="\t\t" 855 ending="\t}\n" 856 } else { 857 indent="\t" 858 ending="" 859 } 860 if (returntype != "void") { 861 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 862 indent, returntype) > rumpcalls 863 printf("%s\trv = *(%s *)retval;\n", \ 864 indent, returntype) > rumpcalls 865 printf("%selse\n", indent, indent) > rumpcalls 866 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 867 printf("%s", ending) > rumpcalls 868 printf("\treturn rv;\n") > rumpcalls 869 } 870 printf("}\n") > rumpcalls 871 printf("rsys_alias(%s%s,rump_enosys)\n", \ 872 compatwrap_, funcname) > rumpcalls 873 874 } 875 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 876 || $2 == "NOERR" { 877 parseline() 878 putent($2, "") 879 syscall++ 880 next 881 } 882 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 883 if ($2 == "OBSOL") 884 comment="obsolete" 885 else if ($2 == "EXCL") 886 comment="excluded" 887 else if ($2 == "IGNORED") 888 comment="ignored" 889 else 890 comment="unimplemented" 891 for (i = 3; i <= NF; i++) 892 comment=comment " " $i 893 894 if ($2 == "IGNORED") 895 sys_stub = "(sy_call_t *)nullop"; 896 else 897 sys_stub = sys_nosys; 898 899 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 900 sys_stub, syscall, comment) > sysent 901 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 902 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 903 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 904 > sysnamesbottom 905 if ($2 != "UNIMPL") 906 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 907 syscall++ 908 next 909 } 910 $2 == "EXTERN" { 911 parseline() 912 putent("EXTERN", "") 913 syscall++ 914 next 915 } 916 { 917 for (i = 1; i <= ncompat; i++) { 918 if ($2 == compat_upper[i]) { 919 parseline(); 920 putent("COMPAT", compat[i]) 921 syscall++ 922 next 923 } 924 } 925 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 926 exit 1 927 } 928 END { 929 # output pipe() syscall with its special retval[2] handling 930 if (rumphaspipe) { 931 printf("int rump_sys_pipe(int *);\n") > rumpprotos 932 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 933 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 934 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 935 printf("\tint error = 0;\n") > rumpcalls 936 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 937 printf("NULL, 0, retval);\n") > rumpcalls 938 printf("\tif (error) {\n") > rumpcalls 939 printf("\t\trsys_seterrno(error);\n") > rumpcalls 940 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 941 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 942 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 943 } 944 945 # print default rump syscall interfaces 946 for (var in funcseen) { 947 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 948 toupper(var)) > rumpcallshdr 949 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 950 toupper(var), funcseen[var]) > rumpcallshdr 951 printf("#endif\n\n") > rumpcallshdr 952 } 953 954 maxsyscall = syscall 955 if (nsysent) { 956 if (syscall > nsysent) { 957 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 958 exit 1 959 } 960 while (syscall < nsysent) { 961 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 962 sys_nosys, syscall) > sysent 963 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 964 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 965 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 966 > sysnamesbottom 967 syscall++ 968 } 969 } 970 printf("};\n") > sysent 971 printf("};\n") > rumpsysent 972 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 973 printf("__strong_alias(sysent,rump_sysent);\n") > rumpsysent 974 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 975 if (haverumpcalls) 976 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 977 printf("};\n") > sysnamesbottom 978 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 979 if (nsysent) 980 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 981 } ' 982 983 cat $sysprotos >> $sysarghdr 984 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 985 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 986 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 987 cat $sysdcl $sysent > $syssw 988 cat $sysnamesbottom >> $sysnames 989 cat $rumpsysent >> $rumpcalls 990 991 touch $rumptypes 992 cat $rumptypes >> $rumpcallshdr 993 echo >> $rumpcallshdr 994 cat $rumpprotos >> $rumpcallshdr 995 996 #chmod 444 $sysnames $sysnumhdr $syssw 997
Indexes created Mon Oct 13 01:09:56 GMT 2025