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 #ifndef YY_NO_UNPUT 62 #define YY_NO_UNPUT 63 #endif 64 65 #define MAX_INCLUDE_DEPTH 10 66 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 67 static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 68 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 69 static unsigned int sysrooted_stack[MAX_INCLUDE_DEPTH]; 70 static unsigned int include_stack_ptr = 0; 71 static int vers_node_nesting = 0; 72 73 static int yy_input (char *, int); 74 static void comment (void); 75 static void lex_warn_invalid (char *where, char *what); 76 77 /* STATES 78 EXPRESSION definitely in an expression 79 SCRIPT definitely in a script 80 INPUTLIST definitely in a script, a filename-list 81 BOTH either EXPRESSION or SCRIPT 82 DEFSYMEXP in an argument to -defsym 83 MRI in an MRI script 84 VERS_START starting a Sun style mapfile 85 VERS_SCRIPT a Sun style mapfile 86 VERS_NODE a node within a Sun style mapfile 87 */ 88 #define RTOKEN(x) { yylval.token = x; return x; } 89 90 /* Some versions of flex want this. */ 91 #ifndef yywrap 92 int yywrap (void) { return 1; } 93 #endif 94 %} 95 96 %a 4000 97 %o 5000 98 99 CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 100 CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 101 FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 102 SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 103 FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 104 WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*\^\!] 105 WHITE [ \t\n\r]+ 106 107 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 108 109 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 110 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)* 111 112 %s SCRIPT 113 %s INPUTLIST 114 %s EXPRESSION 115 %s BOTH 116 %s DEFSYMEXP 117 %s MRI 118 %s VERS_START 119 %s VERS_SCRIPT 120 %s VERS_NODE 121 %% 122 123 if (parser_input != input_selected) 124 { 125 /* The first token of the input determines the initial parser state. */ 126 input_type t = parser_input; 127 parser_input = input_selected; 128 switch (t) 129 { 130 case input_script: return INPUT_SCRIPT; break; 131 case input_mri_script: return INPUT_MRI_SCRIPT; break; 132 case input_version_script: return INPUT_VERSION_SCRIPT; break; 133 case input_dynamic_list: return INPUT_DYNAMIC_LIST; break; 134 case input_defsym: return INPUT_DEFSYM; break; 135 default: abort (); 136 } 137 } 138 139 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>"/*" { comment (); } 140 141 142 <DEFSYMEXP>"-" { RTOKEN('-');} 143 <DEFSYMEXP>"+" { RTOKEN('+');} 144 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; } 145 <DEFSYMEXP>"=" { RTOKEN('='); } 146 147 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { 148 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16); 149 yylval.bigint.str = NULL; 150 return INT; 151 } 152 153 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { 154 int ibase ; 155 switch (yytext[yyleng - 1]) { 156 case 'X': 157 case 'x': 158 case 'H': 159 case 'h': 160 ibase = 16; 161 break; 162 case 'O': 163 case 'o': 164 ibase = 8; 165 break; 166 case 'B': 167 case 'b': 168 ibase = 2; 169 break; 170 default: 171 ibase = 10; 172 } 173 yylval.integer = bfd_scan_vma (yytext, 0, 174 ibase); 175 yylval.bigint.str = NULL; 176 return INT; 177 } 178 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? { 179 char *s = yytext; 180 int ibase = 0; 181 182 if (*s == '$') 183 { 184 ++s; 185 ibase = 16; 186 } 187 yylval.integer = bfd_scan_vma (s, 0, ibase); 188 yylval.bigint.str = NULL; 189 if (yytext[yyleng - 1] == 'M' 190 || yytext[yyleng - 1] == 'm') 191 { 192 yylval.integer *= 1024 * 1024; 193 } 194 else if (yytext[yyleng - 1] == 'K' 195 || yytext[yyleng - 1]=='k') 196 { 197 yylval.integer *= 1024; 198 } 199 else if (yytext[0] == '0' 200 && (yytext[1] == 'x' 201 || yytext[1] == 'X')) 202 { 203 yylval.bigint.str = xstrdup (yytext + 2); 204 } 205 return INT; 206 } 207 <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} 208 <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} 209 <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} 210 <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} 211 <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} 212 <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} 213 <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} 214 <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} 215 <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} 216 <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} 217 <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} 218 <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} 219 <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} 220 <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} 221 <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} 222 <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} 223 <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} 224 <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} 225 <BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');} 226 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"," { 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,INPUTLIST>")" { RTOKEN(')');} 242 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"(" { RTOKEN('(');} 243 <BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } 244 <BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} 245 <BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} 246 <BOTH,SCRIPT>"REGION_ALIAS" { RTOKEN(REGION_ALIAS);} 247 <BOTH,SCRIPT>"LD_FEATURE" { RTOKEN(LD_FEATURE);} 248 <BOTH,SCRIPT,EXPRESSION>"ORIGIN" { RTOKEN(ORIGIN);} 249 <BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);} 250 <EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} 251 <EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} 252 <BOTH,SCRIPT,EXPRESSION>"LENGTH" { RTOKEN(LENGTH);} 253 <EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} 254 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} 255 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END" { RTOKEN(DATA_SEGMENT_RELRO_END);} 256 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);} 257 <EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);} 258 <EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);} 259 <EXPRESSION,BOTH,SCRIPT>"ALIGNOF" { RTOKEN(ALIGNOF); } 260 <EXPRESSION,BOTH>"MAX" { RTOKEN(MAX_K); } 261 <EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); } 262 <EXPRESSION,BOTH>"LOG2CEIL" { RTOKEN(LOG2CEIL); } 263 <EXPRESSION,BOTH,SCRIPT>"ASSERT" { RTOKEN(ASSERT_K); } 264 <BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} 265 <BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);} 266 <EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} 267 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} 268 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} 269 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);} 270 <BOTH,SCRIPT>"MAP" { RTOKEN(MAP);} 271 <EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);} 272 <BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);} 273 <BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);} 274 <BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);} 275 <BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);} 276 <EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);} 277 <EXPRESSION,BOTH,SCRIPT,INPUTLIST>"AS_NEEDED" { RTOKEN(AS_NEEDED);} 278 <EXPRESSION,BOTH,SCRIPT>"DEFINED" { RTOKEN(DEFINED);} 279 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);} 280 <BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);} 281 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);} 282 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);} 283 <BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);} 284 <BOTH,SCRIPT>"INSERT" { RTOKEN(INSERT_K);} 285 <BOTH,SCRIPT>"AFTER" { RTOKEN(AFTER);} 286 <BOTH,SCRIPT>"BEFORE" { RTOKEN(BEFORE);} 287 <BOTH,SCRIPT>"FILL" { RTOKEN(FILL);} 288 <BOTH,SCRIPT>"STARTUP" { RTOKEN(STARTUP);} 289 <BOTH,SCRIPT>"OUTPUT_FORMAT" { RTOKEN(OUTPUT_FORMAT);} 290 <BOTH,SCRIPT>"OUTPUT_ARCH" { RTOKEN( OUTPUT_ARCH);} 291 <BOTH,SCRIPT>"HLL" { RTOKEN(HLL);} 292 <BOTH,SCRIPT>"SYSLIB" { RTOKEN(SYSLIB);} 293 <BOTH,SCRIPT>"FLOAT" { RTOKEN(FLOAT);} 294 <BOTH,SCRIPT>"QUAD" { RTOKEN( QUAD);} 295 <BOTH,SCRIPT>"SQUAD" { RTOKEN( SQUAD);} 296 <BOTH,SCRIPT>"LONG" { RTOKEN( LONG);} 297 <BOTH,SCRIPT>"SHORT" { RTOKEN( SHORT);} 298 <BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);} 299 <BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);} 300 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);} 301 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS_TO" { RTOKEN(NOCROSSREFS_TO);} 302 <BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); } 303 <BOTH,SCRIPT>"SORT_BY_NAME" { RTOKEN(SORT_BY_NAME); } 304 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT" { RTOKEN(SORT_BY_ALIGNMENT); } 305 <BOTH,SCRIPT>"SORT" { RTOKEN(SORT_BY_NAME); } 306 <BOTH,SCRIPT>"SORT_BY_INIT_PRIORITY" { RTOKEN(SORT_BY_INIT_PRIORITY); } 307 <BOTH,SCRIPT>"SORT_NONE" { RTOKEN(SORT_NONE); } 308 <EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);} 309 <EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);} 310 <EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);} 311 <EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);} 312 <EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);} 313 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO" { RTOKEN(ONLY_IF_RO); } 314 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW" { RTOKEN(ONLY_IF_RW); } 315 <EXPRESSION,BOTH,SCRIPT>"SPECIAL" { RTOKEN(SPECIAL); } 316 <BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);} 317 <BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);} 318 <BOTH,SCRIPT>"l" { RTOKEN( LENGTH);} 319 <BOTH,SCRIPT>"len" { RTOKEN( LENGTH);} 320 <EXPRESSION,BOTH,SCRIPT>"INPUT_SECTION_FLAGS" { RTOKEN(INPUT_SECTION_FLAGS); } 321 <EXPRESSION,BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);} 322 <BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); } 323 <EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);} 324 <EXPRESSION,BOTH,SCRIPT>"ALIGN_WITH_INPUT" { RTOKEN(ALIGN_WITH_INPUT);} 325 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN" { RTOKEN(SUBALIGN);} 326 <EXPRESSION,BOTH,SCRIPT>"HIDDEN" { RTOKEN(HIDDEN); } 327 <EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } 328 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); } 329 <EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); } 330 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); } 331 <EXPRESSION,BOTH,SCRIPT>"CONSTANT" { RTOKEN(CONSTANT);} 332 <MRI>"#".*\n? { ++ lineno; } 333 <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } 334 <MRI>"*".* { /* Mri comment line */ } 335 <MRI>";".* { /* Mri comment line */ } 336 <MRI>"END" { RTOKEN(ENDWORD); } 337 <MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} 338 <MRI>"ALIGN" { RTOKEN(ALIGN_K);} 339 <MRI>"CHIP" { RTOKEN(CHIP); } 340 <MRI>"BASE" { RTOKEN(BASE); } 341 <MRI>"ALIAS" { RTOKEN(ALIAS); } 342 <MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } 343 <MRI>"LOAD" { RTOKEN(LOAD); } 344 <MRI>"PUBLIC" { RTOKEN(PUBLIC); } 345 <MRI>"ORDER" { RTOKEN(ORDER); } 346 <MRI>"NAME" { RTOKEN(NAMEWORD); } 347 <MRI>"FORMAT" { RTOKEN(FORMAT); } 348 <MRI>"CASE" { RTOKEN(CASE); } 349 <MRI>"START" { RTOKEN(START); } 350 <MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 351 <MRI>"SECT" { RTOKEN(SECT); } 352 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } 353 <MRI>"end" { RTOKEN(ENDWORD); } 354 <MRI>"alignmod" { RTOKEN(ALIGNMOD);} 355 <MRI>"align" { RTOKEN(ALIGN_K);} 356 <MRI>"chip" { RTOKEN(CHIP); } 357 <MRI>"base" { RTOKEN(BASE); } 358 <MRI>"alias" { RTOKEN(ALIAS); } 359 <MRI>"truncate" { RTOKEN(TRUNCATE); } 360 <MRI>"load" { RTOKEN(LOAD); } 361 <MRI>"public" { RTOKEN(PUBLIC); } 362 <MRI>"order" { RTOKEN(ORDER); } 363 <MRI>"name" { RTOKEN(NAMEWORD); } 364 <MRI>"format" { RTOKEN(FORMAT); } 365 <MRI>"case" { RTOKEN(CASE); } 366 <MRI>"extern" { RTOKEN(EXTERN); } 367 <MRI>"start" { RTOKEN(START); } 368 <MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 369 <MRI>"sect" { RTOKEN(SECT); } 370 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } 371 372 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 373 /* Filename without commas, needed to parse mri stuff */ 374 yylval.name = xstrdup (yytext); 375 return NAME; 376 } 377 378 379 <BOTH,INPUTLIST>{FILENAMECHAR1}{FILENAMECHAR}* { 380 yylval.name = xstrdup (yytext); 381 return NAME; 382 } 383 <INPUTLIST>"="{FILENAMECHAR1}{FILENAMECHAR}* { 384 /* Filename to be prefixed by --sysroot or when non-sysrooted, nothing. */ 385 yylval.name = xstrdup (yytext); 386 return NAME; 387 } 388 <BOTH,INPUTLIST>"-l"{FILENAMECHAR}+ { 389 yylval.name = xstrdup (yytext + 2); 390 return LNAME; 391 } 392 <EXPRESSION>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 393 yylval.name = xstrdup (yytext); 394 return NAME; 395 } 396 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ { 397 yylval.name = xstrdup (yytext + 2); 398 return LNAME; 399 } 400 <SCRIPT>{WILDCHAR}* { 401 /* Annoyingly, this pattern can match comments, and we have 402 longest match issues to consider. So if the first two 403 characters are a comment opening, put the input back and 404 try again. */ 405 if (yytext[0] == '/' && yytext[1] == '*') 406 { 407 yyless (2); 408 comment (); 409 } 410 else 411 { 412 yylval.name = xstrdup (yytext); 413 return NAME; 414 } 415 } 416 417 <EXPRESSION,BOTH,SCRIPT,VERS_NODE,INPUTLIST>"\""[^\"]*"\"" { 418 /* No matter the state, quotes 419 give what's inside */ 420 yylval.name = xstrdup (yytext + 1); 421 yylval.name[yyleng - 2] = 0; 422 return NAME; 423 } 424 <BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} 425 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+ { } 426 427 <VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; } 428 429 <VERS_NODE>global { RTOKEN(GLOBAL); } 430 431 <VERS_NODE>local { RTOKEN(LOCAL); } 432 433 <VERS_NODE>extern { RTOKEN(EXTERN); } 434 435 <VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext); 436 return VERS_IDENTIFIER; } 437 438 <VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext); 439 return VERS_TAG; } 440 441 <VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; } 442 443 <VERS_SCRIPT>"{" { BEGIN(VERS_NODE); 444 vers_node_nesting = 0; 445 return *yytext; 446 } 447 <VERS_SCRIPT>"}" { return *yytext; } 448 <VERS_NODE>"{" { vers_node_nesting++; return *yytext; } 449 <VERS_NODE>"}" { if (--vers_node_nesting < 0) 450 BEGIN(VERS_SCRIPT); 451 return *yytext; 452 } 453 454 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[\n] { lineno++; } 455 456 <VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ } 457 458 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[ \t\r]+ { /* Eat up whitespace */ } 459 460 <<EOF>> { 461 include_stack_ptr--; 462 if (include_stack_ptr == 0) 463 yyterminate (); 464 else 465 yy_switch_to_buffer (include_stack[include_stack_ptr]); 466 467 lineno = lineno_stack[include_stack_ptr]; 468 input_flags.sysrooted = sysrooted_stack[include_stack_ptr]; 469 470 return END; 471 } 472 473 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>. lex_warn_invalid (" in script", yytext); 474 <EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid (" in expression", yytext); 475 476 %% 477 478 480 /* 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, 566 saving the current start condition on `state_stack'. */ 567 568 static int state_stack[MAX_INCLUDE_DEPTH * 2]; 569 static int *state_stack_p = state_stack; 570 571 void 572 ldlex_script (void) 573 { 574 *(state_stack_p)++ = yy_start; 575 BEGIN (SCRIPT); 576 } 577 578 void 579 ldlex_inputlist (void) 580 { 581 *(state_stack_p)++ = yy_start; 582 BEGIN (INPUTLIST); 583 } 584 585 void 586 ldlex_mri_script (void) 587 { 588 *(state_stack_p)++ = yy_start; 589 BEGIN (MRI); 590 } 591 592 void 593 ldlex_version_script (void) 594 { 595 *(state_stack_p)++ = yy_start; 596 BEGIN (VERS_START); 597 } 598 599 void 600 ldlex_version_file (void) 601 { 602 *(state_stack_p)++ = yy_start; 603 BEGIN (VERS_SCRIPT); 604 } 605 606 void 607 ldlex_defsym (void) 608 { 609 *(state_stack_p)++ = yy_start; 610 BEGIN (DEFSYMEXP); 611 } 612 613 void 614 ldlex_expression (void) 615 { 616 *(state_stack_p)++ = yy_start; 617 BEGIN (EXPRESSION); 618 } 619 620 void 621 ldlex_both (void) 622 { 623 *(state_stack_p)++ = yy_start; 624 BEGIN (BOTH); 625 } 626 627 void 628 ldlex_popstate (void) 629 { 630 yy_start = *(--state_stack_p); 631 } 632 633 /* Return the current file name, or the previous file if no file is 634 current. */ 635 636 const char* 637 ldlex_filename (void) 638 { 639 return file_name_stack[include_stack_ptr - (include_stack_ptr != 0)]; 640 } 641 642 644 /* Place up to MAX_SIZE characters in BUF and return 645 either the number of characters read, or 0 to indicate EOF. */ 646 647 static int 648 yy_input (char *buf, int max_size) 649 { 650 int result = 0; 651 if (YY_CURRENT_BUFFER->yy_input_file) 652 { 653 if (yyin) 654 { 655 result = fread (buf, 1, max_size, yyin); 656 if (result < max_size && ferror (yyin)) 657 einfo ("%F%P: read in flex scanner failed\n"); 658 } 659 } 660 return result; 661 } 662 663 /* Eat the rest of a C-style comment. */ 664 665 static void 666 comment (void) 667 { 668 int c; 669 670 while (1) 671 { 672 c = input(); 673 while (c != '*' && c != EOF) 674 { 675 if (c == '\n') 676 lineno++; 677 c = input(); 678 } 679 680 if (c == '*') 681 { 682 c = input(); 683 while (c == '*') 684 c = input(); 685 if (c == '/') 686 break; /* found the end */ 687 } 688 689 if (c == '\n') 690 lineno++; 691 692 if (c == EOF) 693 { 694 einfo( "%F%P: EOF in comment\n"); 695 break; 696 } 697 } 698 } 699 700 /* Warn the user about a garbage character WHAT in the input 701 in context WHERE. */ 702 703 static void 704 lex_warn_invalid (char *where, char *what) 705 { 706 char buf[5]; 707 708 /* If we have found an input file whose format we do not recognize, 709 and we are therefore treating it as a linker script, and we find 710 an invalid character, then most likely this is a real object file 711 of some different format. Treat it as such. */ 712 if (ldfile_assumed_script) 713 { 714 bfd_set_error (bfd_error_file_not_recognized); 715 einfo ("%F%s: file not recognized: %E\n", ldlex_filename ()); 716 } 717 718 if (! ISPRINT (*what)) 719 { 720 sprintf (buf, "\\%03o", *(unsigned char *) what); 721 what = buf; 722 } 723 724 einfo ("%P:%S: ignoring invalid character `%s'%s\n", NULL, what, where); 725 } 726
