1 %{ 2 3 /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001, 2002, 2003, 2004, 2005, 2007 5 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) yy_input (buf, &result, max_size) 61 62 63 #define MAX_INCLUDE_DEPTH 10 64 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 65 static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 66 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 67 static unsigned int include_stack_ptr = 0; 68 static int vers_node_nesting = 0; 69 70 static void yy_input (char *, int *, int); 71 static void comment (void); 72 static void lex_warn_invalid (char *where, char *what); 73 74 /* STATES 75 EXPRESSION definitely in an expression 76 SCRIPT definitely in a script 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 EXPRESSION 112 %s BOTH 113 %s DEFSYMEXP 114 %s MRI 115 %s VERS_START 116 %s VERS_SCRIPT 117 %s VERS_NODE 118 %% 119 120 if (parser_input != input_selected) 121 { 122 /* The first token of the input determines the initial parser state. */ 123 input_type t = parser_input; 124 parser_input = input_selected; 125 switch (t) 126 { 127 case input_script: return INPUT_SCRIPT; break; 128 case input_mri_script: return INPUT_MRI_SCRIPT; break; 129 case input_version_script: return INPUT_VERSION_SCRIPT; break; 130 case input_dynamic_list: return INPUT_DYNAMIC_LIST; break; 131 case input_defsym: return INPUT_DEFSYM; break; 132 default: abort (); 133 } 134 } 135 136 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*" { comment (); } 137 138 139 <DEFSYMEXP>"-" { RTOKEN('-');} 140 <DEFSYMEXP>"+" { RTOKEN('+');} 141 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; } 142 <DEFSYMEXP>"=" { RTOKEN('='); } 143 144 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { 145 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16); 146 yylval.bigint.str = NULL; 147 return INT; 148 } 149 150 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { 151 int ibase ; 152 switch (yytext[yyleng - 1]) { 153 case 'X': 154 case 'x': 155 case 'H': 156 case 'h': 157 ibase = 16; 158 break; 159 case 'O': 160 case 'o': 161 ibase = 8; 162 break; 163 case 'B': 164 case 'b': 165 ibase = 2; 166 break; 167 default: 168 ibase = 10; 169 } 170 yylval.integer = bfd_scan_vma (yytext, 0, 171 ibase); 172 yylval.bigint.str = NULL; 173 return INT; 174 } 175 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? { 176 char *s = yytext; 177 int ibase = 0; 178 179 if (*s == '$') 180 { 181 ++s; 182 ibase = 16; 183 } 184 yylval.integer = bfd_scan_vma (s, 0, ibase); 185 yylval.bigint.str = NULL; 186 if (yytext[yyleng - 1] == 'M' 187 || yytext[yyleng - 1] == 'm') 188 { 189 yylval.integer *= 1024 * 1024; 190 } 191 else if (yytext[yyleng - 1] == 'K' 192 || yytext[yyleng - 1]=='k') 193 { 194 yylval.integer *= 1024; 195 } 196 else if (yytext[0] == '0' 197 && (yytext[1] == 'x' 198 || yytext[1] == 'X')) 199 { 200 yylval.bigint.str = xstrdup (yytext + 2); 201 } 202 return INT; 203 } 204 <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} 205 <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} 206 <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} 207 <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} 208 <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} 209 <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} 210 <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} 211 <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} 212 <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} 213 <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} 214 <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} 215 <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} 216 <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} 217 <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} 218 <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} 219 <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} 220 <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} 221 <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} 222 <BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');} 223 <BOTH,SCRIPT,EXPRESSION,MRI>"," { RTOKEN(',');} 224 <BOTH,SCRIPT,EXPRESSION,MRI>"&" { 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>"(" { RTOKEN('(');} 240 <BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } 241 <BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} 242 <BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} 243 <BOTH,SCRIPT,EXPRESSION>"ORIGIN" { RTOKEN(ORIGIN);} 244 <BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);} 245 <EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} 246 <EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} 247 <BOTH,SCRIPT,EXPRESSION>"LENGTH" { RTOKEN(LENGTH);} 248 <EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} 249 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} 250 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END" { RTOKEN(DATA_SEGMENT_RELRO_END);} 251 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);} 252 <EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);} 253 <EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);} 254 <EXPRESSION,BOTH,SCRIPT>"ALIGNOF" { RTOKEN(ALIGNOF); } 255 <EXPRESSION,BOTH>"MAX" { RTOKEN(MAX_K); } 256 <EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); } 257 <EXPRESSION,BOTH,SCRIPT>"ASSERT" { RTOKEN(ASSERT_K); } 258 <BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} 259 <BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);} 260 <EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} 261 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} 262 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} 263 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);} 264 <BOTH,SCRIPT>"MAP" { RTOKEN(MAP);} 265 <EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);} 266 <BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);} 267 <BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);} 268 <BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);} 269 <BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);} 270 <EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);} 271 <EXPRESSION,BOTH,SCRIPT>"AS_NEEDED" { RTOKEN(AS_NEEDED);} 272 <EXPRESSION,BOTH,SCRIPT>"DEFINED" { RTOKEN(DEFINED);} 273 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);} 274 <BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);} 275 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);} 276 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);} 277 <BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);} 278 <BOTH,SCRIPT>"INSERT" { RTOKEN(INSERT_K);} 279 <BOTH,SCRIPT>"AFTER" { RTOKEN(AFTER);} 280 <BOTH,SCRIPT>"BEFORE" { RTOKEN(BEFORE);} 281 <BOTH,SCRIPT>"FILL" { RTOKEN(FILL);} 282 <BOTH,SCRIPT>"STARTUP" { RTOKEN(STARTUP);} 283 <BOTH,SCRIPT>"OUTPUT_FORMAT" { RTOKEN(OUTPUT_FORMAT);} 284 <BOTH,SCRIPT>"OUTPUT_ARCH" { RTOKEN( OUTPUT_ARCH);} 285 <BOTH,SCRIPT>"HLL" { RTOKEN(HLL);} 286 <BOTH,SCRIPT>"SYSLIB" { RTOKEN(SYSLIB);} 287 <BOTH,SCRIPT>"FLOAT" { RTOKEN(FLOAT);} 288 <BOTH,SCRIPT>"QUAD" { RTOKEN( QUAD);} 289 <BOTH,SCRIPT>"SQUAD" { RTOKEN( SQUAD);} 290 <BOTH,SCRIPT>"LONG" { RTOKEN( LONG);} 291 <BOTH,SCRIPT>"SHORT" { RTOKEN( SHORT);} 292 <BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);} 293 <BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);} 294 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);} 295 <BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); } 296 <BOTH,SCRIPT>"SORT_BY_NAME" { RTOKEN(SORT_BY_NAME); } 297 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT" { RTOKEN(SORT_BY_ALIGNMENT); } 298 <BOTH,SCRIPT>"SORT" { RTOKEN(SORT_BY_NAME); } 299 <EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);} 300 <EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);} 301 <EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);} 302 <EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);} 303 <EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);} 304 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO" { RTOKEN(ONLY_IF_RO); } 305 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW" { RTOKEN(ONLY_IF_RW); } 306 <EXPRESSION,BOTH,SCRIPT>"SPECIAL" { RTOKEN(SPECIAL); } 307 <BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);} 308 <BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);} 309 <BOTH,SCRIPT>"l" { RTOKEN( LENGTH);} 310 <BOTH,SCRIPT>"len" { RTOKEN( LENGTH);} 311 <EXPRESSION,BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);} 312 <BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); } 313 <EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);} 314 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN" { RTOKEN(SUBALIGN);} 315 <EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } 316 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); } 317 <EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); } 318 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); } 319 <EXPRESSION,BOTH,SCRIPT>"CONSTANT" { RTOKEN(CONSTANT);} 320 <MRI>"#".*\n? { ++ lineno; } 321 <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } 322 <MRI>"*".* { /* Mri comment line */ } 323 <MRI>";".* { /* Mri comment line */ } 324 <MRI>"END" { RTOKEN(ENDWORD); } 325 <MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} 326 <MRI>"ALIGN" { RTOKEN(ALIGN_K);} 327 <MRI>"CHIP" { RTOKEN(CHIP); } 328 <MRI>"BASE" { RTOKEN(BASE); } 329 <MRI>"ALIAS" { RTOKEN(ALIAS); } 330 <MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } 331 <MRI>"LOAD" { RTOKEN(LOAD); } 332 <MRI>"PUBLIC" { RTOKEN(PUBLIC); } 333 <MRI>"ORDER" { RTOKEN(ORDER); } 334 <MRI>"NAME" { RTOKEN(NAMEWORD); } 335 <MRI>"FORMAT" { RTOKEN(FORMAT); } 336 <MRI>"CASE" { RTOKEN(CASE); } 337 <MRI>"START" { RTOKEN(START); } 338 <MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 339 <MRI>"SECT" { RTOKEN(SECT); } 340 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } 341 <MRI>"end" { RTOKEN(ENDWORD); } 342 <MRI>"alignmod" { RTOKEN(ALIGNMOD);} 343 <MRI>"align" { RTOKEN(ALIGN_K);} 344 <MRI>"chip" { RTOKEN(CHIP); } 345 <MRI>"base" { RTOKEN(BASE); } 346 <MRI>"alias" { RTOKEN(ALIAS); } 347 <MRI>"truncate" { RTOKEN(TRUNCATE); } 348 <MRI>"load" { RTOKEN(LOAD); } 349 <MRI>"public" { RTOKEN(PUBLIC); } 350 <MRI>"order" { RTOKEN(ORDER); } 351 <MRI>"name" { RTOKEN(NAMEWORD); } 352 <MRI>"format" { RTOKEN(FORMAT); } 353 <MRI>"case" { RTOKEN(CASE); } 354 <MRI>"extern" { RTOKEN(EXTERN); } 355 <MRI>"start" { RTOKEN(START); } 356 <MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 357 <MRI>"sect" { RTOKEN(SECT); } 358 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } 359 360 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 361 /* Filename without commas, needed to parse mri stuff */ 362 yylval.name = xstrdup (yytext); 363 return NAME; 364 } 365 366 367 <BOTH>{FILENAMECHAR1}{FILENAMECHAR}* { 368 yylval.name = xstrdup (yytext); 369 return NAME; 370 } 371 <BOTH>"-l"{FILENAMECHAR}+ { 372 yylval.name = xstrdup (yytext + 2); 373 return LNAME; 374 } 375 <EXPRESSION>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 376 yylval.name = xstrdup (yytext); 377 return NAME; 378 } 379 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ { 380 yylval.name = xstrdup (yytext + 2); 381 return LNAME; 382 } 383 <SCRIPT>{WILDCHAR}* { 384 /* Annoyingly, this pattern can match comments, and we have 385 longest match issues to consider. So if the first two 386 characters are a comment opening, put the input back and 387 try again. */ 388 if (yytext[0] == '/' && yytext[1] == '*') 389 { 390 yyless (2); 391 comment (); 392 } 393 else 394 { 395 yylval.name = xstrdup (yytext); 396 return NAME; 397 } 398 } 399 400 <EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" { 401 /* No matter the state, quotes 402 give what's inside */ 403 yylval.name = xstrdup (yytext + 1); 404 yylval.name[yyleng - 2] = 0; 405 return NAME; 406 } 407 <BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} 408 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+ { } 409 410 <VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; } 411 412 <VERS_NODE>global { RTOKEN(GLOBAL); } 413 414 <VERS_NODE>local { RTOKEN(LOCAL); } 415 416 <VERS_NODE>extern { RTOKEN(EXTERN); } 417 418 <VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext); 419 return VERS_IDENTIFIER; } 420 421 <VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext); 422 return VERS_TAG; } 423 424 <VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; } 425 426 <VERS_SCRIPT>"{" { BEGIN(VERS_NODE); 427 vers_node_nesting = 0; 428 return *yytext; 429 } 430 <VERS_SCRIPT>"}" { return *yytext; } 431 <VERS_NODE>"{" { vers_node_nesting++; return *yytext; } 432 <VERS_NODE>"}" { if (--vers_node_nesting < 0) 433 BEGIN(VERS_SCRIPT); 434 return *yytext; 435 } 436 437 <VERS_START,VERS_NODE,VERS_SCRIPT>[\n] { lineno++; } 438 439 <VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ } 440 441 <VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+ { /* Eat up whitespace */ } 442 443 <<EOF>> { 444 include_stack_ptr--; 445 446 if (include_stack_ptr == 0) 447 { 448 yyterminate (); 449 } 450 else 451 { 452 yy_switch_to_buffer (include_stack[include_stack_ptr]); 453 } 454 455 ldfile_input_filename = file_name_stack[include_stack_ptr - 1]; 456 lineno = lineno_stack[include_stack_ptr]; 457 458 return END; 459 } 460 461 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>. lex_warn_invalid (" in script", yytext); 462 <EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid (" in expression", yytext); 463 464 %% 465 466 467 /* Switch flex to reading script file NAME, open on FILE, 468 saving the current input info on the include stack. */ 469 470 void 471 lex_push_file (FILE *file, const char *name) 472 { 473 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 474 { 475 einfo ("%F:includes nested too deeply\n"); 476 } 477 file_name_stack[include_stack_ptr] = name; 478 lineno_stack[include_stack_ptr] = lineno; 479 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 480 481 include_stack_ptr++; 482 lineno = 1; 483 yyin = file; 484 yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE)); 485 } 486 487 /* Return a newly created flex input buffer containing STRING, 488 which is SIZE bytes long. */ 489 490 static YY_BUFFER_STATE 491 yy_create_string_buffer (const char *string, size_t size) 492 { 493 YY_BUFFER_STATE b; 494 495 /* Calls to m-alloc get turned by sed into xm-alloc. */ 496 b = malloc (sizeof (struct yy_buffer_state)); 497 b->yy_input_file = 0; 498 b->yy_buf_size = size; 499 500 /* yy_ch_buf has to be 2 characters longer than the size given because 501 we need to put in 2 end-of-buffer characters. */ 502 b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3)); 503 504 b->yy_ch_buf[0] = '\n'; 505 strcpy (b->yy_ch_buf+1, string); 506 b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR; 507 b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR; 508 b->yy_n_chars = size+1; 509 b->yy_buf_pos = &b->yy_ch_buf[1]; 510 511 b->yy_is_our_buffer = 1; 512 b->yy_is_interactive = 0; 513 b->yy_at_bol = 1; 514 b->yy_fill_buffer = 0; 515 516 /* flex 2.4.7 changed the interface. FIXME: We should not be using 517 a flex internal interface in the first place! */ 518 #ifdef YY_BUFFER_NEW 519 b->yy_buffer_status = YY_BUFFER_NEW; 520 #else 521 b->yy_eof_status = EOF_NOT_SEEN; 522 #endif 523 524 return b; 525 } 526 527 /* Switch flex to reading from STRING, saving the current input info 528 on the include stack. */ 529 530 void 531 lex_redirect (const char *string) 532 { 533 YY_BUFFER_STATE tmp; 534 535 yy_init = 0; 536 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 537 { 538 einfo("%F: macros nested too deeply\n"); 539 } 540 file_name_stack[include_stack_ptr] = "redirect"; 541 lineno_stack[include_stack_ptr] = lineno; 542 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 543 include_stack_ptr++; 544 lineno = 1; 545 tmp = yy_create_string_buffer (string, strlen (string)); 546 yy_switch_to_buffer (tmp); 547 } 548 549 /* Functions to switch to a different flex start condition, 550 saving the current start condition on `state_stack'. */ 551 552 static int state_stack[MAX_INCLUDE_DEPTH * 2]; 553 static int *state_stack_p = state_stack; 554 555 void 556 ldlex_script (void) 557 { 558 *(state_stack_p)++ = yy_start; 559 BEGIN (SCRIPT); 560 } 561 562 void 563 ldlex_mri_script (void) 564 { 565 *(state_stack_p)++ = yy_start; 566 BEGIN (MRI); 567 } 568 569 void 570 ldlex_version_script (void) 571 { 572 *(state_stack_p)++ = yy_start; 573 BEGIN (VERS_START); 574 } 575 576 void 577 ldlex_version_file (void) 578 { 579 *(state_stack_p)++ = yy_start; 580 BEGIN (VERS_SCRIPT); 581 } 582 583 void 584 ldlex_defsym (void) 585 { 586 *(state_stack_p)++ = yy_start; 587 BEGIN (DEFSYMEXP); 588 } 589 590 void 591 ldlex_expression (void) 592 { 593 *(state_stack_p)++ = yy_start; 594 BEGIN (EXPRESSION); 595 } 596 597 void 598 ldlex_both (void) 599 { 600 *(state_stack_p)++ = yy_start; 601 BEGIN (BOTH); 602 } 603 604 void 605 ldlex_popstate (void) 606 { 607 yy_start = *(--state_stack_p); 608 } 609 610 611 /* Place up to MAX_SIZE characters in BUF and return in *RESULT 612 either the number of characters read, or 0 to indicate EOF. */ 613 614 static void 615 yy_input (char *buf, int *result, int max_size) 616 { 617 *result = 0; 618 if (YY_CURRENT_BUFFER->yy_input_file) 619 { 620 if (yyin) 621 { 622 *result = fread (buf, 1, max_size, yyin); 623 if (*result < max_size && ferror (yyin)) 624 einfo ("%F%P: read in flex scanner failed\n"); 625 } 626 } 627 } 628 629 /* Eat the rest of a C-style comment. */ 630 631 static void 632 comment (void) 633 { 634 int c; 635 636 while (1) 637 { 638 c = input(); 639 while (c != '*' && c != EOF) 640 { 641 if (c == '\n') 642 lineno++; 643 c = input(); 644 } 645 646 if (c == '*') 647 { 648 c = input(); 649 while (c == '*') 650 c = input(); 651 if (c == '/') 652 break; /* found the end */ 653 } 654 655 if (c == '\n') 656 lineno++; 657 658 if (c == EOF) 659 { 660 einfo( "%F%P: EOF in comment\n"); 661 break; 662 } 663 } 664 } 665 666 /* Warn the user about a garbage character WHAT in the input 667 in context WHERE. */ 668 669 static void 670 lex_warn_invalid (char *where, char *what) 671 { 672 char buf[5]; 673 674 /* If we have found an input file whose format we do not recognize, 675 and we are therefore treating it as a linker script, and we find 676 an invalid character, then most likely this is a real object file 677 of some different format. Treat it as such. */ 678 if (ldfile_assumed_script) 679 { 680 bfd_set_error (bfd_error_file_not_recognized); 681 einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename); 682 } 683 684 if (! ISPRINT (*what)) 685 { 686 sprintf (buf, "\\%03o", (unsigned int) *what); 687 what = buf; 688 } 689 690 einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where); 691 } 692