makesyscalls.sh revision 1.125.2.3
1 # $NetBSD: makesyscalls.sh,v 1.125.2.3 2013/06/23 06:18:58 tls 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 <sys/types.h> /* typedefs */\n" > rumpcallshdr 304 printf "#include <sys/select.h> /* typedefs */\n" > rumpcallshdr 305 printf "#include <sys/socket.h> /* typedefs */\n\n" > rumpcallshdr 306 printf "#include <signal.h> /* typedefs */\n\n" > rumpcallshdr 307 printf "#include <rump/rump_syscalls_compat.h>\n\n" > rumpcallshdr 308 309 printf "%s", sysarghdrextra > sysarghdr 310 # Write max number of system call arguments to both headers 311 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 312 > sysnumhdr 313 printf("#define\t%sMAXSYSARGS\t%d\n\n", constprefix, maxsysargs) \ 314 > sysarghdr 315 printf "#undef\tsyscallarg\n" > sysarghdr 316 printf "#define\tsyscallarg(x)\t\t\t\t\t\t\t\\\n" > sysarghdr 317 printf "\tunion {\t\t\t\t\t\t\t\t\\\n" > sysarghdr 318 printf "\t\t%s pad;\t\t\t\t\t\t\\\n", registertype > sysarghdr 319 printf "\t\tstruct { x datum; } le;\t\t\t\t\t\\\n" > sysarghdr 320 printf "\t\tstruct { /* LINTED zero array dimension */\t\t\\\n" \ 321 > sysarghdr 322 printf "\t\t\tint8_t pad[ /* CONSTCOND */\t\t\t\\\n" > sysarghdr 323 printf "\t\t\t\t(sizeof (%s) < sizeof (x))\t\\\n", \ 324 registertype > sysarghdr 325 printf "\t\t\t\t? 0\t\t\t\t\t\\\n" > sysarghdr 326 printf "\t\t\t\t: sizeof (%s) - sizeof (x)];\t\\\n", \ 327 registertype > sysarghdr 328 printf "\t\t\tx datum;\t\t\t\t\t\\\n" > sysarghdr 329 printf "\t\t} be;\t\t\t\t\t\t\t\\\n" > sysarghdr 330 printf "\t}\n" > sysarghdr 331 printf("\n#undef check_syscall_args\n") >sysarghdr 332 printf("#define check_syscall_args(call) /*LINTED*/ \\\n" \ 333 "\ttypedef char call##_check_args" \ 334 "[sizeof (struct call##_args) \\\n" \ 335 "\t\t<= %sMAXSYSARGS * sizeof (%s) ? 1 : -1];\n", \ 336 constprefix, registertype) >sysarghdr 337 338 # compat types from syscalls.master. this is slightly ugly, 339 # but given that we have so few compats from over 17 years, 340 # a more complicated solution is not currently warranted. 341 uncompattypes["struct timeval50"] = "struct timeval"; 342 uncompattypes["struct timespec50"] = "struct timespec"; 343 uncompattypes["struct stat30"] = "struct stat"; 344 345 next 346 } 347 NF == 0 || $1 ~ /^;/ { 348 next 349 } 350 $0 ~ /^%%$/ { 351 intable = 1 352 next 353 } 354 $1 ~ /^#[ ]*include/ { 355 print > sysdcl 356 print > sysnames 357 next 358 } 359 $1 ~ /^#/ && !intable { 360 print > sysdcl 361 print > sysnames 362 next 363 } 364 $1 ~ /^#/ && intable { 365 if ($1 ~ /^#[ ]*if/) { 366 savedepth++ 367 savesyscall[savedepth] = syscall 368 } 369 if ($1 ~ /^#[ ]*else/) { 370 if (savedepth <= 0) { 371 printf("%s: line %d: unbalanced #else\n", \ 372 infile, NR) 373 exit 1 374 } 375 syscall = savesyscall[savedepth] 376 } 377 if ($1 ~ /^#[ ]*endif/) { 378 if (savedepth <= 0) { 379 printf("%s: line %d: unbalanced #endif\n", \ 380 infile, NR) 381 exit 1 382 } 383 savedepth-- 384 } 385 print > sysent 386 print > sysarghdr 387 print > sysnumhdr 388 print > sysprotos 389 print > sysnamesbottom 390 391 # XXX: technically we do not want to have conditionals in rump, 392 # but it is easier to just let the cpp handle them than try to 393 # figure out what we want here in this script 394 print > rumpsysent 395 next 396 } 397 syscall != $1 { 398 printf "%s: line %d: syscall number out of sync at %d\n", \ 399 infile, NR, syscall 400 printf "line is:\n" 401 print 402 exit 1 403 } 404 function parserr(was, wanted) { 405 printf "%s: line %d: unexpected %s (expected <%s>)\n", \ 406 infile, NR, was, wanted 407 printf "line is:\n" 408 print 409 exit 1 410 } 411 function parseline() { 412 f=3 # toss number and type 413 if ($2 == "INDIR") 414 sycall_flags="SYCALL_INDIRECT" 415 else 416 sycall_flags="0" 417 if ($NF != "}") { 418 funcalias=$NF 419 end=NF-1 420 } else { 421 funcalias="" 422 end=NF 423 } 424 if ($f == "INDIR") { # allow for "NOARG INDIR" 425 sycall_flags = "SYCALL_INDIRECT | " sycall_flags 426 f++ 427 } 428 if ($f == "MODULAR") { # registered at runtime 429 modular = 1 430 f++ 431 } else { 432 modular = 0; 433 } 434 if ($f == "RUMP") { 435 rumpable = 1 436 f++ 437 } else { 438 rumpable = 0 439 } 440 if ($f ~ /^[a-z0-9_]*$/) { # allow syscall alias 441 funcalias=$f 442 f++ 443 } 444 if ($f != "{") 445 parserr($f, "{") 446 f++ 447 if ($end != "}") 448 parserr($end, "}") 449 end-- 450 if ($end != ";") 451 parserr($end, ";") 452 end-- 453 if ($end != ")") 454 parserr($end, ")") 455 end-- 456 457 returntype = oldf = ""; 458 do { 459 if (returntype != "" && oldf != "*") 460 returntype = returntype" "; 461 returntype = returntype$f; 462 oldf = $f; 463 f++ 464 } while ($f != "|" && f < (end-1)) 465 if (f == (end - 1)) { 466 parserr($f, "function argument definition (maybe \"|\"?)"); 467 } 468 f++ 469 470 fprefix=$f 471 f++ 472 if ($f != "|") { 473 parserr($f, "function compat delimiter (maybe \"|\"?)"); 474 } 475 f++ 476 477 fcompat="" 478 if ($f != "|") { 479 fcompat=$f 480 f++ 481 } 482 483 if ($f != "|") { 484 parserr($f, "function name delimiter (maybe \"|\"?)"); 485 } 486 f++ 487 fbase=$f 488 489 # pipe is special in how to returns its values. 490 # So just generate it manually if present. 491 if (rumpable == 1 && fbase == "pipe") { 492 rumpable = 0; 493 rumphaspipe = 1; 494 } 495 496 if (fcompat != "") { 497 funcname=fprefix "___" fbase "" fcompat 498 } else { 499 funcname=fprefix "_" fbase 500 } 501 if (returntype == "quad_t" || returntype == "off_t") { 502 if (sycall_flags == "0") 503 sycall_flags = "SYCALL_RET_64"; 504 else 505 sycall_flags = "SYCALL_RET_64 | " sycall_flags; 506 } 507 508 if (funcalias == "") { 509 funcalias=funcname 510 sub(/^([^_]+_)*sys_/, "", funcalias) 511 realname=fbase 512 } else { 513 realname=funcalias 514 } 515 rumpfname=realname "" fcompat 516 f++ 517 518 if ($f != "(") 519 parserr($f, "(") 520 f++ 521 522 argc=0; 523 argalign=0; 524 if (f == end) { 525 if ($f != "void") 526 parserr($f, "argument definition") 527 isvarargs = 0; 528 varargc = 0; 529 argtype[0]="void"; 530 return 531 } 532 533 # some system calls (open() and fcntl()) can accept a variable 534 # number of arguments. If syscalls accept a variable number of 535 # arguments, they must still have arguments specified for 536 # the remaining argument "positions," because of the way the 537 # kernel system call argument handling works. 538 # 539 # Indirect system calls, e.g. syscall(), are exceptions to this 540 # rule, since they are handled entirely by machine-dependent code 541 # and do not need argument structures built. 542 543 isvarargs = 0; 544 args64 = 0; 545 ptr = 0; 546 while (f <= end) { 547 if ($f == "...") { 548 f++; 549 isvarargs = 1; 550 varargc = argc; 551 continue; 552 } 553 argc++ 554 argtype[argc]="" 555 oldf="" 556 while (f < end && $(f+1) != ",") { 557 if (argtype[argc] != "" && oldf != "*") 558 argtype[argc] = argtype[argc]" "; 559 argtype[argc] = argtype[argc]$f; 560 oldf = $f; 561 f++ 562 } 563 if (argtype[argc] == "") 564 parserr($f, "argument definition") 565 if (argtype[argc] == "off_t" \ 566 || argtype[argc] == "dev_t" \ 567 || argtype[argc] == "time_t") { 568 if ((argalign % 2) != 0 && sysalign && 569 funcname != "sys_posix_fadvise") # XXX for now 570 parserr($f, "a padding argument") 571 } else { 572 argalign++; 573 } 574 if (argtype[argc] == "quad_t" || argtype[argc] == "off_t" \ 575 || argtype[argc] == "dev_t" || argtype[argc] == "time_t") { 576 if (sycall_flags == "0") 577 sycall_flags = "SYCALL_ARG"argc-1"_64"; 578 else 579 sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags; 580 args64++; 581 } 582 if (index(argtype[argc], "*") != 0 && ptr == 0) { 583 if (sycall_flags == "0") 584 sycall_flags = "SYCALL_ARG_PTR"; 585 else 586 sycall_flags = "SYCALL_ARG_PTR | " sycall_flags; 587 ptr = 1; 588 } 589 argname[argc]=$f; 590 f += 2; # skip name, and any comma 591 } 592 if (args64 > 0) 593 sycall_flags = "SYCALL_NARGS64_VAL("args64") | " sycall_flags; 594 # must see another argument after varargs notice. 595 if (isvarargs) { 596 if (argc == varargc) 597 parserr($f, "argument definition") 598 } else 599 varargc = argc; 600 } 601 602 function printproto(wrap) { 603 printf("/* syscall: \"%s%s\" ret: \"%s\" args:", wrap, funcalias, 604 returntype) > sysnumhdr 605 for (i = 1; i <= varargc; i++) 606 printf(" \"%s\"", argtype[i]) > sysnumhdr 607 if (isvarargs) 608 printf(" \"...\"") > sysnumhdr 609 printf(" */\n") > sysnumhdr 610 printf("#define\t%s%s%s\t%d\n\n", constprefix, wrap, funcalias, 611 syscall) > sysnumhdr 612 613 # rumpalooza 614 if (!rumpable) 615 return 616 617 # accumulate fbases we have seen. we want the last 618 # occurence for the default __RENAME() 619 seen = funcseen[fbase] 620 funcseen[fbase] = rumpfname 621 if (seen) 622 return 623 624 printf("%s rump_sys_%s(", returntype, realname) > rumpprotos 625 626 for (i = 1; i < varargc; i++) 627 if (argname[i] != "PAD") 628 printf("%s, ", uncompattype(argtype[i])) > rumpprotos 629 630 if (isvarargs) 631 printf("%s, ...)", uncompattype(argtype[varargc]))>rumpprotos 632 else 633 printf("%s)", uncompattype(argtype[argc])) > rumpprotos 634 635 printf(" __RENAME(RUMP_SYS_RENAME_%s)", toupper(fbase))> rumpprotos 636 printf(";\n") > rumpprotos 637 638 # generate forward-declares for types, apart from the 639 # braindead typedef jungle we cannot easily handle here 640 for (i = 1; i <= varargc; i++) { 641 type=uncompattype(argtype[i]) 642 sub("const ", "", type) 643 if (!typeseen[type] && \ 644 match(type, "struct") && match(type, "\\*")) { 645 typeseen[type] = 1 646 sub(" *\\*", "", type); 647 printf("%s;\n", type) > rumptypes 648 } 649 } 650 } 651 652 function printrumpsysent(insysent, compatwrap) { 653 if (!insysent) { 654 eno[0] = "rump_enosys" 655 eno[1] = "sys_nomodule" 656 flags[0] = "SYCALL_NOSYS" 657 flags[1] = "0" 658 printf("\t{ 0, 0, %s,\n\t (sy_call_t *)%s }, \t" \ 659 "/* %d = %s */\n", \ 660 flags[modular], eno[modular], syscall, funcalias) \ 661 > rumpsysent 662 return 663 } 664 665 printf("\t{ ") > rumpsysent 666 if (argc == 0) { 667 printf("0, 0, ") > rumpsysent 668 } else { 669 printf("ns(struct %ssys_%s_args), ", compatwrap_, funcalias) > rumpsysent 670 } 671 672 if (compatwrap == "") { 673 if (modular) 674 rfn = "(sy_call_t *)sys_nomodule" 675 else 676 rfn = "(sy_call_t *)" funcname 677 } else { 678 rfn = "(sy_call_t *)" compatwrap "_" funcname 679 } 680 681 printf("0,\n\t %s },", rfn) > rumpsysent 682 for (i = 0; i < (33 - length(rfn)) / 8; i++) 683 printf("\t") > rumpsysent 684 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > rumpsysent 685 } 686 687 function iscompattype(type) { 688 for (var in uncompattypes) { 689 if (match(type, var)) { 690 return 1 691 } 692 } 693 694 return 0 695 } 696 697 function uncompattype(type) { 698 for (var in uncompattypes) { 699 if (match(type, var)) { 700 sub(var, uncompattypes[var], type) 701 return type 702 } 703 } 704 705 return type 706 } 707 708 function putent(type, compatwrap) { 709 # output syscall declaration for switch table. 710 if (compatwrap == "") 711 compatwrap_ = "" 712 else 713 compatwrap_ = compatwrap "_" 714 if (argc == 0) 715 arg_type = "void"; 716 else { 717 arg_type = "struct " compatwrap_ funcname "_args"; 718 } 719 proto = "int\t" compatwrap_ funcname "(struct lwp *, const " \ 720 arg_type " *, register_t *);\n" 721 if (sysmap[proto] != 1) { 722 sysmap[proto] = 1; 723 print proto > sysprotos; 724 } 725 726 # output syscall switch entry 727 printf("\t{ ") > sysent 728 if (argc == 0) { 729 printf("0, 0, ") > sysent 730 } else { 731 printf("ns(struct %s%s_args), ", compatwrap_, funcname) > sysent 732 } 733 if (modular) 734 wfn = "(sy_call_t *)sys_nomodule"; 735 else if (compatwrap == "") 736 wfn = "(sy_call_t *)" funcname; 737 else 738 wfn = "(sy_call_t *)" compatwrap "(" funcname ")"; 739 printf("%s,\n\t %s },", sycall_flags, wfn) > sysent 740 for (i = 0; i < (33 - length(wfn)) / 8; i++) 741 printf("\t") > sysent 742 printf("/* %d = %s%s */\n", syscall, compatwrap_, funcalias) > sysent 743 744 # output syscall name for names table 745 printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \ 746 > sysnamesbottom 747 748 # output syscall number of header, if appropriate 749 if (type == "STD" || type == "NOARGS" || type == "INDIR" || \ 750 type == "NOERR") { 751 # output a prototype, to be used to generate lint stubs in 752 # libc. 753 printproto("") 754 } else if (type == "COMPAT" || type == "EXTERN") { 755 # Just define the syscall number with a comment. These 756 # may be used by compatibility stubs in libc. 757 printproto(compatwrap_) 758 } 759 760 # output syscall argument structure, if it has arguments 761 if (argc != 0) { 762 printf("\n") > sysarghdr 763 if (haverumpcalls && !rumpable) 764 printf("#ifndef RUMP_CLIENT\n") > sysarghdr 765 printf("struct %s%s_args", compatwrap_, funcname) > sysarghdr 766 if (type != "NOARGS") { 767 print " {" >sysarghdr; 768 for (i = 1; i <= argc; i++) 769 printf("\tsyscallarg(%s) %s;\n", argtype[i], 770 argname[i]) > sysarghdr 771 printf "}" >sysarghdr; 772 } 773 printf(";\n") > sysarghdr 774 if (type != "NOARGS" && type != "INDIR") { 775 printf("check_syscall_args(%s%s)\n", compatwrap_, 776 funcname) >sysarghdr 777 } 778 if (haverumpcalls && !rumpable) 779 printf("#endif /* !RUMP_CLIENT */\n") > sysarghdr 780 } 781 782 if (!rumpable) { 783 if (funcname == "sys_pipe" && rumphaspipe == 1) 784 insysent = 1 785 else 786 insysent = 0 787 } else { 788 insysent = 1 789 } 790 printrumpsysent(insysent, compatwrap) 791 792 # output rump marshalling code if necessary 793 if (!rumpable) { 794 return 795 } 796 797 # need a local prototype, we export the re-re-named one in .h 798 printf("\n%s rump___sysimpl_%s(", returntype, rumpfname) \ 799 > rumpcalls 800 for (i = 1; i < argc; i++) { 801 if (argname[i] != "PAD") 802 printf("%s, ", uncompattype(argtype[i])) > rumpcalls 803 } 804 printf("%s);", uncompattype(argtype[argc])) > rumpcalls 805 806 printf("\n%s\nrump___sysimpl_%s(", returntype, rumpfname) > rumpcalls 807 for (i = 1; i < argc; i++) { 808 if (argname[i] != "PAD") 809 printf("%s %s, ", uncompattype(argtype[i]), \ 810 argname[i]) > rumpcalls 811 } 812 printf("%s %s)\n", uncompattype(argtype[argc]), argname[argc]) \ 813 > rumpcalls 814 printf("{\n\tregister_t retval[2] = {0, 0};\n") > rumpcalls 815 if (returntype != "void") { 816 if (type != "NOERR") { 817 printf("\tint error = 0;\n") > rumpcalls 818 } 819 # assume rumpcalls return only integral types 820 printf("\t%s rv = -1;\n", returntype) > rumpcalls 821 } 822 823 argarg = "NULL" 824 argsize = 0; 825 if (argc) { 826 argarg = "&callarg" 827 argsize = "sizeof(callarg)" 828 printf("\tstruct %s%s_args callarg;\n\n",compatwrap_,funcname) \ 829 > rumpcalls 830 for (i = 1; i <= argc; i++) { 831 if (argname[i] == "PAD") { 832 printf("\tSPARG(&callarg, %s) = 0;\n", \ 833 argname[i]) > rumpcalls 834 } else { 835 if (iscompattype(argtype[i])) { 836 printf("\tSPARG(&callarg, %s) = " \ 837 "(%s)%s;\n", argname[i], argtype[i], \ 838 argname[i]) > rumpcalls 839 } else { 840 printf("\tSPARG(&callarg, %s) = %s;\n",\ 841 argname[i], argname[i]) > rumpcalls 842 } 843 } 844 } 845 printf("\n") > rumpcalls 846 } else { 847 printf("\n") > rumpcalls 848 } 849 printf("\t") > rumpcalls 850 if (returntype != "void" && type != "NOERR") 851 printf("error = ") > rumpcalls 852 printf("rsys_syscall(%s%s%s, " \ 853 "%s, %s, retval);\n", constprefix, compatwrap_, funcalias, \ 854 argarg, argsize) > rumpcalls 855 if (type != "NOERR") { 856 printf("\trsys_seterrno(error);\n") > rumpcalls 857 printf("\tif (error == 0) {\n") > rumpcalls 858 indent="\t\t" 859 ending="\t}\n" 860 } else { 861 indent="\t" 862 ending="" 863 } 864 if (returntype != "void") { 865 printf("%sif (sizeof(%s) > sizeof(register_t))\n", \ 866 indent, returntype) > rumpcalls 867 printf("%s\trv = *(%s *)retval;\n", \ 868 indent, returntype) > rumpcalls 869 printf("%selse\n", indent, indent) > rumpcalls 870 printf("%s\trv = *retval;\n", indent, returntype) > rumpcalls 871 printf("%s", ending) > rumpcalls 872 printf("\treturn rv;\n") > rumpcalls 873 } 874 printf("}\n") > rumpcalls 875 printf("rsys_alias(%s%s,rump_enosys)\n", \ 876 compatwrap_, funcname) > rumpcalls 877 878 } 879 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \ 880 || $2 == "NOERR" { 881 parseline() 882 putent($2, "") 883 syscall++ 884 next 885 } 886 $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" { 887 if ($2 == "OBSOL") 888 comment="obsolete" 889 else if ($2 == "EXCL") 890 comment="excluded" 891 else if ($2 == "IGNORED") 892 comment="ignored" 893 else 894 comment="unimplemented" 895 for (i = 3; i <= NF; i++) 896 comment=comment " " $i 897 898 if ($2 == "IGNORED") 899 sys_stub = "(sy_call_t *)nullop"; 900 else 901 sys_stub = sys_nosys; 902 903 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = %s */\n", \ 904 sys_stub, syscall, comment) > sysent 905 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = %s */\n", \ 906 "(sy_call_t *)rump_enosys", syscall, comment) > rumpsysent 907 printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \ 908 > sysnamesbottom 909 if ($2 != "UNIMPL") 910 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 911 syscall++ 912 next 913 } 914 $2 == "EXTERN" { 915 parseline() 916 putent("EXTERN", "") 917 syscall++ 918 next 919 } 920 { 921 for (i = 1; i <= ncompat; i++) { 922 if ($2 == compat_upper[i]) { 923 parseline(); 924 putent("COMPAT", compat[i]) 925 syscall++ 926 next 927 } 928 } 929 printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2) 930 exit 1 931 } 932 END { 933 # output pipe() syscall with its special retval[2] handling 934 if (rumphaspipe) { 935 printf("int rump_sys_pipe(int *);\n") > rumpprotos 936 printf("\nint rump_sys_pipe(int *);\n") > rumpcalls 937 printf("int\nrump_sys_pipe(int *fd)\n{\n") > rumpcalls 938 printf("\tregister_t retval[2] = {0, 0};\n") > rumpcalls 939 printf("\tint error = 0;\n") > rumpcalls 940 printf("\n\terror = rsys_syscall(SYS_pipe, ") > rumpcalls 941 printf("NULL, 0, retval);\n") > rumpcalls 942 printf("\tif (error) {\n") > rumpcalls 943 printf("\t\trsys_seterrno(error);\n") > rumpcalls 944 printf("\t} else {\n\t\tfd[0] = retval[0];\n") > rumpcalls 945 printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls 946 printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls 947 } 948 949 # print default rump syscall interfaces 950 for (var in funcseen) { 951 printf("#ifndef RUMP_SYS_RENAME_%s\n", \ 952 toupper(var)) > rumpcallshdr 953 printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \ 954 toupper(var), funcseen[var]) > rumpcallshdr 955 printf("#endif\n\n") > rumpcallshdr 956 } 957 958 maxsyscall = syscall 959 if (nsysent) { 960 if (syscall > nsysent) { 961 printf("%s: line %d: too many syscalls [%d > %d]\n", infile, NR, syscall, nsysent) 962 exit 1 963 } 964 while (syscall < nsysent) { 965 printf("\t{ 0, 0, 0,\n\t %s },\t\t\t/* %d = filler */\n", \ 966 sys_nosys, syscall) > sysent 967 printf("\t{ 0, 0, SYCALL_NOSYS,\n\t %s },\t\t/* %d = filler */\n", \ 968 "(sy_call_t *)rump_enosys", syscall) > rumpsysent 969 printf("\t/* %3d */\t\"# filler\",\n", syscall) \ 970 > sysnamesbottom 971 syscall++ 972 } 973 } 974 printf("};\n") > sysent 975 printf("};\n") > rumpsysent 976 printf("CTASSERT(__arraycount(rump_sysent) == SYS_NSYSENT);\n") > rumpsysent 977 printf("__strong_alias(sysent,rump_sysent);\n") > rumpsysent 978 printf("#endif /* RUMP_CLIENT */\n") > rumpsysent 979 if (haverumpcalls) 980 printf("#endif /* !RUMP_CLIENT */\n") > sysprotos 981 printf("};\n") > sysnamesbottom 982 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr 983 if (nsysent) 984 printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr 985 } ' 986 987 cat $sysprotos >> $sysarghdr 988 echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr 989 echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr 990 printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos 991 cat $sysdcl $sysent > $syssw 992 cat $sysnamesbottom >> $sysnames 993 cat $rumpsysent >> $rumpcalls 994 995 touch $rumptypes 996 cat $rumptypes >> $rumpcallshdr 997 echo >> $rumpcallshdr 998 cat $rumpprotos >> $rumpcallshdr 999 1000 #chmod 444 $sysnames $sysnumhdr $syssw 1001
Indexes created Mon Oct 13 16:09:52 GMT 2025