makesyscalls.sh revision 1.16
1 #! /bin/sh - 2 # $NetBSD: makesyscalls.sh,v 1.16 1995/09/19 21:28:56 thorpej Exp $ 3 # 4 # Copyright (c) 1994 Christopher G. Demetriou 5 # All rights reserved. 6 # 7 # Redistribution and use in source and binary forms, with or without 8 # modification, are permitted provided that the following conditions 9 # are met: 10 # 1. Redistributions of source code must retain the above copyright 11 # notice, this list of conditions and the following disclaimer. 12 # 2. Redistributions in binary form must reproduce the above copyright 13 # notice, this list of conditions and the following disclaimer in the 14 # documentation and/or other materials provided with the distribution. 15 # 3. All advertising materials mentioning features or use of this software 16 # must display the following acknowledgement: 17 # This product includes software developed for the NetBSD Project 18 # by Christopher G. Demetriou. 19 # 4. The name of the author may not be used to endorse or promote products 20 # derived from this software without specific prior written permission 21 # 22 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33 # @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93 34 35 set -e 36 37 case $# in 38 2) ;; 39 *) echo "Usage: $0 config-file input-file" 1>&2 40 exit 1 41 ;; 42 esac 43 44 # source the config file. 45 . $1 46 47 # the config file sets the following variables: 48 # sysnames the syscall names file 49 # sysnumhdr the syscall numbers file 50 # syssw the syscall switch file 51 # sysarghdr the syscall argument struct definitions 52 # compatopts those syscall types that are for 'compat' syscalls 53 # switchname the name for the 'struct sysent' we define 54 # namesname the name for the 'char *[]' we define 55 # constprefix the prefix for the system call constants 56 # 57 # NOTE THAT THIS makesyscalls.sh DOES NOT SUPPORT 'LIBCOMPAT'. 58 59 # tmp files: 60 sysdcl="sysent.dcl" 61 sysprotos="sys.protos" 62 syscompat_pref="sysent." 63 sysent="sysent.switch" 64 65 syscompat_files="" 66 for file in $compatopts; do 67 syscompat_files="$syscompat_files $syscompat_pref$file" 68 done 69 70 trap "rm $sysdcl $sysprotos $syscompat_files $sysent" 0 71 72 # Awk program (must support nawk extensions) 73 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 74 awk=${AWK:-awk} 75 76 # Does this awk have a "toupper" function? (i.e. is it GNU awk) 77 isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 78 79 # If this awk does not define "toupper" then define our own. 80 if [ "$isgawk" = TRUE ] ; then 81 # GNU awk provides it. 82 toupper= 83 else 84 # Provide our own toupper() 85 toupper=' 86 function toupper(str) { 87 _toupper_cmd = "echo "str" |tr a-z A-Z" 88 _toupper_cmd | getline _toupper_str; 89 close(_toupper_cmd); 90 return _toupper_str; 91 }' 92 fi 93 94 # before handing it off to awk, make a few adjustments: 95 # (1) insert spaces around {, }, (, ), *, and commas. 96 # (2) get rid of any and all dollar signs (so that rcs id use safe) 97 # 98 # The awk script will deal with blank lines and lines that 99 # start with the comment character (';'). 100 101 sed -e ' 102 s/\$//g 103 :join 104 /\\$/{a\ 105 106 N 107 s/\\\n// 108 b join 109 } 110 2,${ 111 /^#/!s/\([{}()*,]\)/ \1 /g 112 } 113 ' < $2 | $awk " 114 $toupper 115 BEGIN { 116 sysnames = \"$sysnames\" 117 sysprotos = \"$sysprotos\" 118 sysnumhdr = \"$sysnumhdr\" 119 sysarghdr = \"$sysarghdr\" 120 switchname = \"$switchname\" 121 namesname = \"$namesname\" 122 constprefix = \"$constprefix\" 123 124 sysdcl = \"$sysdcl\" 125 syscompat_pref = \"$syscompat_pref\" 126 sysent = \"$sysent\" 127 infile = \"$2\" 128 129 compatopts = \"$compatopts\" 130 "' 131 132 printf "/*\n * System call switch table.\n *\n" > sysdcl 133 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 134 135 ncompat = split(compatopts,compat) 136 for (i = 1; i <= ncompat; i++) { 137 compat_upper[i] = toupper(compat[i]) 138 compat_file[i] = sprintf("%s%s", syscompat_pref, compat[i]) 139 140 printf "\n#ifdef %s\n", compat_upper[i] > compat_file[i] 141 printf "#define %s(func) __CONCAT(%s_,func)\n\n", \ 142 compat[i], compat[i] > compat_file[i] 143 } 144 145 printf "/*\n * System call names.\n *\n" > sysnames 146 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 147 148 printf "\n/*\n * System call prototypes.\n */\n\n" > sysprotos 149 150 printf "/*\n * System call numbers.\n *\n" > sysnumhdr 151 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnumhdr 152 153 printf "/*\n * System call argument lists.\n *\n" > sysarghdr 154 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarghdr 155 } 156 NR == 1 { 157 printf " * created from%s\n */\n\n", $0 > sysdcl 158 159 printf "#define\ts(type)\tsizeof(type)\n\n" > sysent 160 printf "struct sysent %s[] = {\n",switchname > sysent 161 162 printf " * created from%s\n */\n\n", $0 > sysnames 163 printf "char *%s[] = {\n",namesname > sysnames 164 165 printf " * created from%s\n */\n\n", $0 > sysnumhdr 166 167 printf " * created from%s\n */\n\n", $0 > sysarghdr 168 printf "#define\tsyscallarg(x)\tunion { x datum; register_t pad; }\n" \ 169 > sysarghdr 170 next 171 } 172 NF == 0 || $1 ~ /^;/ { 173 next 174 } 175 $1 ~ /^#[ ]*include/ { 176 print > sysdcl 177 next 178 } 179 $1 ~ /^#[ ]*if/ { 180 print > sysent 181 print > sysprotos 182 for (i = 1; i <= ncompat; i++) 183 print > compat_file[i] 184 print > sysnames 185 savesyscall = syscall 186 next 187 } 188 $1 ~ /^#[ ]*else/ { 189 print > sysent 190 print > sysprotos 191 for (i = 1; i <= ncompat; i++) 192 print > compat_file[i] 193 print > sysnames 194 syscall = savesyscall 195 next 196 } 197 $1 ~ /^#/ { 198 print > sysent 199 print > sysprotos 200 for (i = 1; i <= ncompat; i++) 201 print > compat_file[i] 202 print > sysnames 203 next 204 } 205 syscall != $1 { 206 printf "%s: line %d: syscall number out of sync at %d\n", \ 207 infile, NR, syscall 208 printf "line is:\n" 209 print 210 exit 1 211 } 212 function parserr(was, wanted) { 213 printf "%s: line %d: unexpected %s (expected %s)\n", \ 214 infile, NR, was, wanted 215 exit 1 216 } 217 function parseline() { 218 f=3 # toss number and type 219 if ($NF != "}") { 220 funcalias=$NF 221 end=NF-1 222 } else { 223 funcalias="" 224 end=NF 225 } 226 if ($f != "{") 227 parserr($f, "{") 228 f++ 229 if ($end != "}") 230 parserr($end, "}") 231 end-- 232 if ($end != ";") 233 parserr($end, ";") 234 end-- 235 if ($end != ")") 236 parserr($end, ")") 237 end-- 238 239 f++ # toss return type 240 241 funcname=$f 242 if (funcalias == "") 243 funcalias=funcname 244 f++ 245 246 if ($f != "(") 247 parserr($f, ")") 248 f++ 249 250 argc= 0; 251 if (f == end) { 252 if ($f != "void") 253 parserr($f, "argument definition") 254 return 255 } 256 257 while (f <= end) { 258 argc++ 259 argtype[argc]="" 260 oldf="" 261 while (f < end && $(f+1) != ",") { 262 if (argtype[argc] != "" && oldf != "*") 263 argtype[argc] = argtype[argc]" "; 264 argtype[argc] = argtype[argc]$f; 265 oldf = $f; 266 f++ 267 } 268 if (argtype[argc] == "") 269 parserr($f, "argument definition") 270 argname[argc]=$f; 271 f += 2; # skip name, and any comma 272 } 273 } 274 function putent(nodefs, declfile, compatwrap) { 275 # output syscall declaration for switch table 276 prototype = "__P((struct proc *, void *, register_t *))" 277 if (compatwrap == "") 278 printf("int\t%s\t%s;\n", funcname, prototype) > declfile 279 else 280 printf("int\t%s(%s)\t%s;\n", compatwrap, funcname, prototype) > declfile 281 282 # output syscall switch entry 283 # printf("\t{ { %d", argc) > sysent 284 # for (i = 1; i <= argc; i++) { 285 # if (i == 5) # wrap the line 286 # printf(",\n\t ") > sysent 287 # else 288 # printf(", ") > sysent 289 # printf("s(%s)", argtypenospc[i]) > sysent 290 # } 291 printf("\t{ %d, ", argc) > sysent 292 if (argc == 0) 293 printf("0") > sysent 294 else if (compatwrap == "") 295 printf("s(struct %s_args)", funcname) > sysent 296 else 297 printf("s(struct %s_%s_args)", compatwrap, funcname) > sysent 298 if (compatwrap == "") 299 wfn = sprintf("%s", funcname); 300 else 301 wfn = sprintf("%s(%s)", compatwrap, funcname); 302 printf(",\n\t %s },", wfn) > sysent 303 for (i = 0; i < (33 - length(wfn)) / 8; i++) 304 printf("\t") > sysent 305 if (compatwrap == "") 306 printf("/* %d = %s */\n", syscall, funcalias) > sysent 307 else 308 printf("/* %d = %s %s */\n", syscall, compatwrap, 309 funcalias) > sysent 310 311 # output syscall name for names table 312 if (compatwrap == "") 313 printf("\t\"%s\",\t\t\t/* %d = %s */\n", funcalias, syscall, 314 funcalias) > sysnames 315 else 316 printf("\t\"%s_%s\",\t/* %d = %s %s */\n", compatwrap, 317 funcalias, syscall, compatwrap, funcalias) > sysnames 318 319 # output syscall number of header, if appropriate 320 if (nodefs == "" || nodefs == "NOARGS") 321 printf("#define\t%s%s\t%d\n", constprefix, funcalias, 322 syscall) > sysnumhdr 323 else if (nodefs != "NODEF") 324 printf("\t\t\t\t/* %d is %s %s */\n", syscall, 325 compatwrap, funcalias) > sysnumhdr 326 327 # output syscall argument structure, if it has arguments 328 if (argc != 0 && nodefs != "NOARGS") { 329 if (compatwrap == "") 330 printf("\nstruct %s_args {\n", funcname) > sysarghdr 331 else 332 printf("\nstruct %s_%s_args {\n", compatwrap, 333 funcname) > sysarghdr 334 for (i = 1; i <= argc; i++) 335 printf("\tsyscallarg(%s) %s;\n", argtype[i], 336 argname[i]) > sysarghdr 337 printf("};\n") > sysarghdr 338 } 339 } 340 $2 == "STD" { 341 parseline() 342 putent("", sysprotos, ""); 343 syscall++ 344 next 345 } 346 $2 == "NODEF" || $2 == "NOARGS" { 347 parseline() 348 putent($2, sysprotos, "") 349 syscall++ 350 next 351 } 352 $2 == "OBSOL" || $2 == "UNIMPL" { 353 if ($2 == "OBSOL") 354 comment="obsolete" 355 else 356 comment="unimplemented" 357 for (i = 3; i <= NF; i++) 358 comment=comment " " $i 359 360 printf("\t{ 0, 0,\n\t nosys },\t\t\t\t/* %d = %s */\n", \ 361 syscall, comment) > sysent 362 printf("\t\"#%d (%s)\",\t\t/* %d = %s */\n", \ 363 syscall, comment, syscall, comment) > sysnames 364 if ($2 != "UNIMPL") 365 printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr 366 syscall++ 367 next 368 } 369 { 370 for (i = 1; i <= ncompat; i++) { 371 if ($2 == compat_upper[i]) { 372 parseline(); 373 putent("COMMENT", compat_file[i], compat[i]) 374 syscall++ 375 next 376 } 377 } 378 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2 379 exit 1 380 } 381 END { 382 printf "\n#undef\tsyscallarg\n" > sysarghdr 383 384 for (i = 1; i <= ncompat; i++) { 385 printf("\n#else /* %s */\n", compat_upper[i]) > compat_file[i] 386 printf("#define %s(func) nosys\n", compat[i]) > \ 387 compat_file[i] 388 printf("#endif /* %s */\n\n", compat_upper[i]) > compat_file[i] 389 } 390 391 printf("};\n\n") > sysent 392 printf("};\n") > sysnames 393 printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, syscall) > sysnumhdr 394 } ' 395 396 cat $sysprotos $syscompat_files >> $sysarghdr 397 cat $sysdcl $sysent > $syssw 398 399 #chmod 444 $sysnames $sysnumhdr $syssw 400
Indexes created Thu Oct 16 14:10:15 GMT 2025