1 %option nounput 2 3 %{ 4 5 /* Copyright (C) 1991-2016 Free Software Foundation, Inc. 6 Written by Steve Chamberlain of Cygnus Support. 7 8 This file is part of the GNU Binutils. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 23 MA 02110-1301, USA. */ 24 25 #include "sysdep.h" 26 #include "bfd.h" 27 #include "safe-ctype.h" 28 #include "bfdlink.h" 29 #include "ld.h" 30 #include "ldmisc.h" 31 #include "ldexp.h" 32 #include "ldlang.h" 33 #include <ldgram.h> 34 #include "ldfile.h" 35 #include "ldlex.h" 36 #include "ldmain.h" 37 #include "libiberty.h" 38 39 /* The type of top-level parser input. 40 yylex and yyparse (indirectly) both check this. */ 41 input_type parser_input; 42 43 /* Line number in the current input file. 44 (FIXME Actually, it doesn't appear to get reset for each file?) */ 45 unsigned int lineno = 1; 46 47 /* The string we are currently lexing, or NULL if we are reading a 48 file. */ 49 const char *lex_string = NULL; 50 51 /* Support for flex reading from more than one input file (stream). 52 `include_stack' is flex's input state for each open file; 53 `file_name_stack' is the file names. `lineno_stack' is the current 54 line numbers. 55 56 If `include_stack_ptr' is 0, we haven't started reading anything yet. 57 Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */ 58 59 #undef YY_INPUT 60 #define YY_INPUT(buf,result,max_size) result = yy_input (buf, max_size) 61 62 #ifndef YY_NO_UNPUT 63 #define YY_NO_UNPUT 64 #endif 65 66 #define MAX_INCLUDE_DEPTH 10 67 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 68 static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 69 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 70 static unsigned int sysrooted_stack[MAX_INCLUDE_DEPTH]; 71 static unsigned int include_stack_ptr = 0; 72 static int vers_node_nesting = 0; 73 74 static int yy_input (char *, int); 75 static void comment (void); 76 static void lex_warn_invalid (char *where, char *what); 77 78 /* STATES 79 EXPRESSION definitely in an expression 80 SCRIPT definitely in a script 81 INPUTLIST definitely in a script, a filename-list 82 BOTH either EXPRESSION or SCRIPT 83 DEFSYMEXP in an argument to -defsym 84 MRI in an MRI script 85 VERS_START starting a Sun style mapfile 86 VERS_SCRIPT a Sun style mapfile 87 VERS_NODE a node within a Sun style mapfile 88 */ 89 #define RTOKEN(x) { yylval.token = x; return x; } 90 91 /* Some versions of flex want this. */ 92 #ifndef yywrap 93 int yywrap (void) { return 1; } 94 #endif 95 %} 96 97 %a 4000 98 %o 5000 99 100 CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 101 CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 102 FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 103 SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 104 FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 105 WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*\^\!] 106 WHITE [ \t\n\r]+ 107 108 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 109 110 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 111 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)* 112 113 %s SCRIPT 114 %s INPUTLIST 115 %s EXPRESSION 116 %s BOTH 117 %s DEFSYMEXP 118 %s MRI 119 %s VERS_START 120 %s VERS_SCRIPT 121 %s VERS_NODE 122 %% 123 124 if (parser_input != input_selected) 125 { 126 /* The first token of the input determines the initial parser state. */ 127 input_type t = parser_input; 128 parser_input = input_selected; 129 switch (t) 130 { 131 case input_script: return INPUT_SCRIPT; break; 132 case input_mri_script: return INPUT_MRI_SCRIPT; break; 133 case input_version_script: return INPUT_VERSION_SCRIPT; break; 134 case input_dynamic_list: return INPUT_DYNAMIC_LIST; break; 135 case input_defsym: return INPUT_DEFSYM; break; 136 default: abort (); 137 } 138 } 139 140 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>"/*" { comment (); } 141 142 143 <DEFSYMEXP>"-" { RTOKEN('-');} 144 <DEFSYMEXP>"+" { RTOKEN('+');} 145 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; } 146 <DEFSYMEXP>"=" { RTOKEN('='); } 147 148 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { 149 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16); 150 yylval.bigint.str = NULL; 151 return INT; 152 } 153 154 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { 155 int ibase ; 156 switch (yytext[yyleng - 1]) { 157 case 'X': 158 case 'x': 159 case 'H': 160 case 'h': 161 ibase = 16; 162 break; 163 case 'O': 164 case 'o': 165 ibase = 8; 166 break; 167 case 'B': 168 case 'b': 169 ibase = 2; 170 break; 171 default: 172 ibase = 10; 173 } 174 yylval.integer = bfd_scan_vma (yytext, 0, 175 ibase); 176 yylval.bigint.str = NULL; 177 return INT; 178 } 179 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? { 180 char *s = yytext; 181 int ibase = 0; 182 183 if (*s == '$') 184 { 185 ++s; 186 ibase = 16; 187 } 188 yylval.integer = bfd_scan_vma (s, 0, ibase); 189 yylval.bigint.str = NULL; 190 if (yytext[yyleng - 1] == 'M' 191 || yytext[yyleng - 1] == 'm') 192 { 193 yylval.integer *= 1024 * 1024; 194 } 195 else if (yytext[yyleng - 1] == 'K' 196 || yytext[yyleng - 1]=='k') 197 { 198 yylval.integer *= 1024; 199 } 200 else if (yytext[0] == '0' 201 && (yytext[1] == 'x' 202 || yytext[1] == 'X')) 203 { 204 yylval.bigint.str = xstrdup (yytext + 2); 205 } 206 return INT; 207 } 208 <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} 209 <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} 210 <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} 211 <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} 212 <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} 213 <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} 214 <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} 215 <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} 216 <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} 217 <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} 218 <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} 219 <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} 220 <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} 221 <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} 222 <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} 223 <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} 224 <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} 225 <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} 226 <BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');} 227 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"," { RTOKEN(',');} 228 <BOTH,SCRIPT,EXPRESSION,MRI>"&" { RTOKEN('&');} 229 <BOTH,SCRIPT,EXPRESSION,MRI>"|" { RTOKEN('|');} 230 <BOTH,SCRIPT,EXPRESSION,MRI>"~" { RTOKEN('~');} 231 <BOTH,SCRIPT,EXPRESSION,MRI>"!" { RTOKEN('!');} 232 <BOTH,SCRIPT,EXPRESSION,MRI>"?" { RTOKEN('?');} 233 <BOTH,SCRIPT,EXPRESSION,MRI>"*" { RTOKEN('*');} 234 <BOTH,SCRIPT,EXPRESSION,MRI>"+" { RTOKEN('+');} 235 <BOTH,SCRIPT,EXPRESSION,MRI>"-" { RTOKEN('-');} 236 <BOTH,SCRIPT,EXPRESSION,MRI>"/" { RTOKEN('/');} 237 <BOTH,SCRIPT,EXPRESSION,MRI>"%" { RTOKEN('%');} 238 <BOTH,SCRIPT,EXPRESSION,MRI>"<" { RTOKEN('<');} 239 <BOTH,SCRIPT,EXPRESSION,MRI>"=" { RTOKEN('=');} 240 <BOTH,SCRIPT,EXPRESSION,MRI>"}" { RTOKEN('}') ; } 241 <BOTH,SCRIPT,EXPRESSION,MRI>"{" { RTOKEN('{'); } 242 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>")" { RTOKEN(')');} 243 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"(" { RTOKEN('(');} 244 <BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } 245 <BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} 246 <BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} 247 <BOTH,SCRIPT>"REGION_ALIAS" { RTOKEN(REGION_ALIAS);} 248 <BOTH,SCRIPT>"LD_FEATURE" { RTOKEN(LD_FEATURE);} 249 <BOTH,SCRIPT,EXPRESSION>"ORIGIN" { RTOKEN(ORIGIN);} 250 <BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);} 251 <EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} 252 <EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} 253 <BOTH,SCRIPT,EXPRESSION>"LENGTH" { RTOKEN(LENGTH);} 254 <EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} 255 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} 256 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END" { RTOKEN(DATA_SEGMENT_RELRO_END);} 257 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);} 258 <EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);} 259 <EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);} 260 <EXPRESSION,BOTH,SCRIPT>"ALIGNOF" { RTOKEN(ALIGNOF); } 261 <EXPRESSION,BOTH>"MAX" { RTOKEN(MAX_K); } 262 <EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); } 263 <EXPRESSION,BOTH>"LOG2CEIL" { RTOKEN(LOG2CEIL); } 264 <EXPRESSION,BOTH,SCRIPT>"ASSERT" { RTOKEN(ASSERT_K); } 265 <BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} 266 <BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);} 267 <EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} 268 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} 269 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} 270 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);} 271 <BOTH,SCRIPT>"MAP" { RTOKEN(MAP);} 272 <EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);} 273 <BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);} 274 <BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);} 275 <BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);} 276 <BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);} 277 <EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);} 278 <EXPRESSION,BOTH,SCRIPT,INPUTLIST>"AS_NEEDED" { RTOKEN(AS_NEEDED);} 279 <EXPRESSION,BOTH,SCRIPT>"DEFINED" { RTOKEN(DEFINED);} 280 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);} 281 <BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);} 282 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);} 283 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);} 284 <BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);} 285 <BOTH,SCRIPT>"INSERT" { RTOKEN(INSERT_K);} 286 <BOTH,SCRIPT>"AFTER" { RTOKEN(AFTER);} 287 <BOTH,SCRIPT>"BEFORE" { RTOKEN(BEFORE);} 288 <BOTH,SCRIPT>"FILL" { RTOKEN(FILL);} 289 <BOTH,SCRIPT>"STARTUP" { RTOKEN(STARTUP);} 290 <BOTH,SCRIPT>"OUTPUT_FORMAT" { RTOKEN(OUTPUT_FORMAT);} 291 <BOTH,SCRIPT>"OUTPUT_ARCH" { RTOKEN( OUTPUT_ARCH);} 292 <BOTH,SCRIPT>"HLL" { RTOKEN(HLL);} 293 <BOTH,SCRIPT>"SYSLIB" { RTOKEN(SYSLIB);} 294 <BOTH,SCRIPT>"FLOAT" { RTOKEN(FLOAT);} 295 <BOTH,SCRIPT>"QUAD" { RTOKEN( QUAD);} 296 <BOTH,SCRIPT>"SQUAD" { RTOKEN( SQUAD);} 297 <BOTH,SCRIPT>"LONG" { RTOKEN( LONG);} 298 <BOTH,SCRIPT>"SHORT" { RTOKEN( SHORT);} 299 <BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);} 300 <BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);} 301 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);} 302 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS_TO" { RTOKEN(NOCROSSREFS_TO);} 303 <BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); } 304 <BOTH,SCRIPT>"SORT_BY_NAME" { RTOKEN(SORT_BY_NAME); } 305 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT" { RTOKEN(SORT_BY_ALIGNMENT); } 306 <BOTH,SCRIPT>"SORT" { RTOKEN(SORT_BY_NAME); } 307 <BOTH,SCRIPT>"SORT_BY_INIT_PRIORITY" { RTOKEN(SORT_BY_INIT_PRIORITY); } 308 <BOTH,SCRIPT>"SORT_NONE" { RTOKEN(SORT_NONE); } 309 <EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);} 310 <EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);} 311 <EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);} 312 <EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);} 313 <EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);} 314 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO" { RTOKEN(ONLY_IF_RO); } 315 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW" { RTOKEN(ONLY_IF_RW); } 316 <EXPRESSION,BOTH,SCRIPT>"SPECIAL" { RTOKEN(SPECIAL); } 317 <BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);} 318 <BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);} 319 <BOTH,SCRIPT>"l" { RTOKEN( LENGTH);} 320 <BOTH,SCRIPT>"len" { RTOKEN( LENGTH);} 321 <EXPRESSION,BOTH,SCRIPT>"INPUT_SECTION_FLAGS" { RTOKEN(INPUT_SECTION_FLAGS); } 322 <EXPRESSION,BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);} 323 <BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); } 324 <EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);} 325 <EXPRESSION,BOTH,SCRIPT>"ALIGN_WITH_INPUT" { RTOKEN(ALIGN_WITH_INPUT);} 326 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN" { RTOKEN(SUBALIGN);} 327 <EXPRESSION,BOTH,SCRIPT>"HIDDEN" { RTOKEN(HIDDEN); } 328 <EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } 329 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); } 330 <EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); } 331 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); } 332 <EXPRESSION,BOTH,SCRIPT>"CONSTANT" { RTOKEN(CONSTANT);} 333 <MRI>"#".*\n? { ++ lineno; } 334 <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } 335 <MRI>"*".* { /* Mri comment line */ } 336 <MRI>";".* { /* Mri comment line */ } 337 <MRI>"END" { RTOKEN(ENDWORD); } 338 <MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} 339 <MRI>"ALIGN" { RTOKEN(ALIGN_K);} 340 <MRI>"CHIP" { RTOKEN(CHIP); } 341 <MRI>"BASE" { RTOKEN(BASE); } 342 <MRI>"ALIAS" { RTOKEN(ALIAS); } 343 <MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } 344 <MRI>"LOAD" { RTOKEN(LOAD); } 345 <MRI>"PUBLIC" { RTOKEN(PUBLIC); } 346 <MRI>"ORDER" { RTOKEN(ORDER); } 347 <MRI>"NAME" { RTOKEN(NAMEWORD); } 348 <MRI>"FORMAT" { RTOKEN(FORMAT); } 349 <MRI>"CASE" { RTOKEN(CASE); } 350 <MRI>"START" { RTOKEN(START); } 351 <MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 352 <MRI>"SECT" { RTOKEN(SECT); } 353 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } 354 <MRI>"end" { RTOKEN(ENDWORD); } 355 <MRI>"alignmod" { RTOKEN(ALIGNMOD);} 356 <MRI>"align" { RTOKEN(ALIGN_K);} 357 <MRI>"chip" { RTOKEN(CHIP); } 358 <MRI>"base" { RTOKEN(BASE); } 359 <MRI>"alias" { RTOKEN(ALIAS); } 360 <MRI>"truncate" { RTOKEN(TRUNCATE); } 361 <MRI>"load" { RTOKEN(LOAD); } 362 <MRI>"public" { RTOKEN(PUBLIC); } 363 <MRI>"order" { RTOKEN(ORDER); } 364 <MRI>"name" { RTOKEN(NAMEWORD); } 365 <MRI>"format" { RTOKEN(FORMAT); } 366 <MRI>"case" { RTOKEN(CASE); } 367 <MRI>"extern" { RTOKEN(EXTERN); } 368 <MRI>"start" { RTOKEN(START); } 369 <MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 370 <MRI>"sect" { RTOKEN(SECT); } 371 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } 372 373 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 374 /* Filename without commas, needed to parse mri stuff */ 375 yylval.name = xstrdup (yytext); 376 return NAME; 377 } 378 379 380 <BOTH,INPUTLIST>{FILENAMECHAR1}{FILENAMECHAR}* { 381 yylval.name = xstrdup (yytext); 382 return NAME; 383 } 384 <INPUTLIST>"="{FILENAMECHAR1}{FILENAMECHAR}* { 385 /* Filename to be prefixed by --sysroot or when non-sysrooted, nothing. */ 386 yylval.name = xstrdup (yytext); 387 return NAME; 388 } 389 <BOTH,INPUTLIST>"-l"{FILENAMECHAR}+ { 390 yylval.name = xstrdup (yytext + 2); 391 return LNAME; 392 } 393 <EXPRESSION>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 394 yylval.name = xstrdup (yytext); 395 return NAME; 396 } 397 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ { 398 yylval.name = xstrdup (yytext + 2); 399 return LNAME; 400 } 401 <SCRIPT>{WILDCHAR}* { 402 /* Annoyingly, this pattern can match comments, and we have 403 longest match issues to consider. So if the first two 404 characters are a comment opening, put the input back and 405 try again. */ 406 if (yytext[0] == '/' && yytext[1] == '*') 407 { 408 yyless (2); 409 comment (); 410 } 411 else 412 { 413 yylval.name = xstrdup (yytext); 414 return NAME; 415 } 416 } 417 418 <EXPRESSION,BOTH,SCRIPT,VERS_NODE,INPUTLIST>"\""[^\"]*"\"" { 419 /* No matter the state, quotes 420 give what's inside */ 421 yylval.name = xstrdup (yytext + 1); 422 yylval.name[yyleng - 2] = 0; 423 return NAME; 424 } 425 <BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} 426 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+ { } 427 428 <VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; } 429 430 <VERS_NODE>global { RTOKEN(GLOBAL); } 431 432 <VERS_NODE>local { RTOKEN(LOCAL); } 433 434 <VERS_NODE>extern { RTOKEN(EXTERN); } 435 436 <VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext); 437 return VERS_IDENTIFIER; } 438 439 <VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext); 440 return VERS_TAG; } 441 442 <VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; } 443 444 <VERS_SCRIPT>"{" { BEGIN(VERS_NODE); 445 vers_node_nesting = 0; 446 return *yytext; 447 } 448 <VERS_SCRIPT>"}" { return *yytext; } 449 <VERS_NODE>"{" { vers_node_nesting++; return *yytext; } 450 <VERS_NODE>"}" { if (--vers_node_nesting < 0) 451 BEGIN(VERS_SCRIPT); 452 return *yytext; 453 } 454 455 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[\n] { lineno++; } 456 457 <VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ } 458 459 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[ \t\r]+ { /* Eat up whitespace */ } 460 461 <<EOF>> { 462 include_stack_ptr--; 463 if (include_stack_ptr == 0) 464 yyterminate (); 465 else 466 yy_switch_to_buffer (include_stack[include_stack_ptr]); 467 468 lineno = lineno_stack[include_stack_ptr]; 469 input_flags.sysrooted = sysrooted_stack[include_stack_ptr]; 470 471 return END; 472 } 473 474 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>. lex_warn_invalid (" in script", yytext); 475 <EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid (" in expression", yytext); 476 477 %% 478 479 480 /* Switch flex to reading script file NAME, open on FILE, 481 saving the current input info on the include stack. */ 482 483 void 484 lex_push_file (FILE *file, const char *name, unsigned int sysrooted) 485 { 486 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 487 { 488 einfo ("%F:includes nested too deeply\n"); 489 } 490 file_name_stack[include_stack_ptr] = name; 491 lineno_stack[include_stack_ptr] = lineno; 492 sysrooted_stack[include_stack_ptr] = input_flags.sysrooted; 493 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 494 495 include_stack_ptr++; 496 lineno = 1; 497 input_flags.sysrooted = sysrooted; 498 yyin = file; 499 yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE)); 500 } 501 502 /* Return a newly created flex input buffer containing STRING, 503 which is SIZE bytes long. */ 504 505 static YY_BUFFER_STATE 506 yy_create_string_buffer (const char *string, size_t size) 507 { 508 YY_BUFFER_STATE b; 509 510 /* Calls to m-alloc get turned by sed into xm-alloc. */ 511 b = malloc (sizeof (struct yy_buffer_state)); 512 b->yy_input_file = 0; 513 b->yy_buf_size = size; 514 515 /* yy_ch_buf has to be 2 characters longer than the size given because 516 we need to put in 2 end-of-buffer characters. */ 517 b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3)); 518 519 b->yy_ch_buf[0] = '\n'; 520 strcpy (b->yy_ch_buf+1, string); 521 b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR; 522 b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR; 523 b->yy_n_chars = size+1; 524 b->yy_buf_pos = &b->yy_ch_buf[1]; 525 526 b->yy_is_our_buffer = 1; 527 b->yy_is_interactive = 0; 528 b->yy_at_bol = 1; 529 b->yy_fill_buffer = 0; 530 531 /* flex 2.4.7 changed the interface. FIXME: We should not be using 532 a flex internal interface in the first place! */ 533 #ifdef YY_BUFFER_NEW 534 b->yy_buffer_status = YY_BUFFER_NEW; 535 #else 536 b->yy_eof_status = EOF_NOT_SEEN; 537 #endif 538 539 return b; 540 } 541 542 /* Switch flex to reading from STRING, saving the current input info 543 on the include stack. */ 544 545 void 546 lex_redirect (const char *string, const char *fake_filename, unsigned int count) 547 { 548 YY_BUFFER_STATE tmp; 549 550 yy_init = 0; 551 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 552 { 553 einfo("%F: macros nested too deeply\n"); 554 } 555 file_name_stack[include_stack_ptr] = fake_filename; 556 lineno_stack[include_stack_ptr] = lineno; 557 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 558 include_stack_ptr++; 559 lineno = count; 560 tmp = yy_create_string_buffer (string, strlen (string)); 561 yy_switch_to_buffer (tmp); 562 } 563 564 /* Functions to switch to a different flex start condition, 565 saving the current start condition on `state_stack'. */ 566 567 static int state_stack[MAX_INCLUDE_DEPTH * 2]; 568 static int *state_stack_p = state_stack; 569 570 void 571 ldlex_script (void) 572 { 573 *(state_stack_p)++ = yy_start; 574 BEGIN (SCRIPT); 575 } 576 577 void 578 ldlex_inputlist (void) 579 { 580 *(state_stack_p)++ = yy_start; 581 BEGIN (INPUTLIST); 582 } 583 584 void 585 ldlex_mri_script (void) 586 { 587 *(state_stack_p)++ = yy_start; 588 BEGIN (MRI); 589 } 590 591 void 592 ldlex_version_script (void) 593 { 594 *(state_stack_p)++ = yy_start; 595 BEGIN (VERS_START); 596 } 597 598 void 599 ldlex_version_file (void) 600 { 601 *(state_stack_p)++ = yy_start; 602 BEGIN (VERS_SCRIPT); 603 } 604 605 void 606 ldlex_defsym (void) 607 { 608 *(state_stack_p)++ = yy_start; 609 BEGIN (DEFSYMEXP); 610 } 611 612 void 613 ldlex_expression (void) 614 { 615 *(state_stack_p)++ = yy_start; 616 BEGIN (EXPRESSION); 617 } 618 619 void 620 ldlex_both (void) 621 { 622 *(state_stack_p)++ = yy_start; 623 BEGIN (BOTH); 624 } 625 626 void 627 ldlex_popstate (void) 628 { 629 yy_start = *(--state_stack_p); 630 } 631 632 /* Return the current file name, or the previous file if no file is 633 current. */ 634 635 const char* 636 ldlex_filename (void) 637 { 638 return file_name_stack[include_stack_ptr - (include_stack_ptr != 0)]; 639 } 640 641 642 /* Place up to MAX_SIZE characters in BUF and return 643 either the number of characters read, or 0 to indicate EOF. */ 644 645 static int 646 yy_input (char *buf, int max_size) 647 { 648 int result = 0; 649 if (YY_CURRENT_BUFFER->yy_input_file) 650 { 651 if (yyin) 652 { 653 result = fread (buf, 1, max_size, yyin); 654 if (result < max_size && ferror (yyin)) 655 einfo ("%F%P: read in flex scanner failed\n"); 656 } 657 } 658 return result; 659 } 660 661 /* Eat the rest of a C-style comment. */ 662 663 static void 664 comment (void) 665 { 666 int c; 667 668 while (1) 669 { 670 c = input(); 671 while (c != '*' && c != EOF) 672 { 673 if (c == '\n') 674 lineno++; 675 c = input(); 676 } 677 678 if (c == '*') 679 { 680 c = input(); 681 while (c == '*') 682 c = input(); 683 if (c == '/') 684 break; /* found the end */ 685 } 686 687 if (c == '\n') 688 lineno++; 689 690 if (c == EOF) 691 { 692 einfo( "%F%P: EOF in comment\n"); 693 break; 694 } 695 } 696 } 697 698 /* Warn the user about a garbage character WHAT in the input 699 in context WHERE. */ 700 701 static void 702 lex_warn_invalid (char *where, char *what) 703 { 704 char buf[5]; 705 706 /* If we have found an input file whose format we do not recognize, 707 and we are therefore treating it as a linker script, and we find 708 an invalid character, then most likely this is a real object file 709 of some different format. Treat it as such. */ 710 if (ldfile_assumed_script) 711 { 712 bfd_set_error (bfd_error_file_not_recognized); 713 einfo ("%F%s: file not recognized: %E\n", ldlex_filename ()); 714 } 715 716 if (! ISPRINT (*what)) 717 { 718 sprintf (buf, "\\%03o", *(unsigned char *) what); 719 what = buf; 720 } 721 722 einfo ("%P:%S: ignoring invalid character `%s'%s\n", NULL, what, where); 723 } 724