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