1 %{ 2 3 /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001, 2002, 2003 Free Software Foundation, Inc. 5 6 This file is part of GLD, the Gnu Linker. 7 8 GLD is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GLD is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GLD; see the file COPYING. If not, write to the Free 20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 21 02111-1307, USA. */ 22 23 /* 24 This was written by steve chamberlain 25 sac@cygnus.com 26 */ 27 28 29 #include <stdio.h> 30 31 #ifdef MPW 32 /* Prevent enum redefinition problems. */ 33 #define TRUE_FALSE_ALREADY_DEFINED 34 #endif /* MPW */ 35 36 #include "bfd.h" 37 #include "sysdep.h" 38 #include "safe-ctype.h" 39 #include "bfdlink.h" 40 #include "ld.h" 41 #include "ldmisc.h" 42 #include "ldexp.h" 43 #include "ldlang.h" 44 #include <ldgram.h> 45 #include "ldfile.h" 46 #include "ldlex.h" 47 #include "ldmain.h" 48 #include "libiberty.h" 49 50 /* The type of top-level parser input. 51 yylex and yyparse (indirectly) both check this. */ 52 input_type parser_input; 53 54 /* Line number in the current input file. 55 (FIXME Actually, it doesn't appear to get reset for each file?) */ 56 unsigned int lineno = 1; 57 58 /* The string we are currently lexing, or NULL if we are reading a 59 file. */ 60 const char *lex_string = NULL; 61 62 /* Support for flex reading from more than one input file (stream). 63 `include_stack' is flex's input state for each open file; 64 `file_name_stack' is the file names. `lineno_stack' is the current 65 line numbers. 66 67 If `include_stack_ptr' is 0, we haven't started reading anything yet. 68 Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */ 69 70 #undef YY_INPUT 71 #define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size) 72 73 #define MAX_INCLUDE_DEPTH 10 74 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 75 static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 76 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 77 static unsigned int include_stack_ptr = 0; 78 static int vers_node_nesting = 0; 79 80 static void yy_input (char *, int *, int); 81 static void comment (void); 82 static void lex_warn_invalid (char *where, char *what); 83 84 /* STATES 85 EXPRESSION definitely in an expression 86 SCRIPT definitely in a script 87 BOTH either EXPRESSION or SCRIPT 88 DEFSYMEXP in an argument to -defsym 89 MRI in an MRI script 90 VERS_START starting a Sun style mapfile 91 VERS_SCRIPT a Sun style mapfile 92 VERS_NODE a node within a Sun style mapfile 93 */ 94 #define RTOKEN(x) { yylval.token = x; return x; } 95 96 /* Some versions of flex want this. */ 97 #ifndef yywrap 98 int yywrap (void) { return 1; } 99 #endif 100 %} 101 102 %a 4000 103 %o 5000 104 105 CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 106 CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 107 FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 108 SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 109 FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 110 WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*] 111 WHITE [ \t\n\r]+ 112 113 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 114 115 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 116 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)* 117 118 %s SCRIPT 119 %s EXPRESSION 120 %s BOTH 121 %s DEFSYMEXP 122 %s MRI 123 %s VERS_START 124 %s VERS_SCRIPT 125 %s VERS_NODE 126 %% 127 128 if (parser_input != input_selected) 129 { 130 /* The first token of the input determines the initial parser state. */ 131 input_type t = parser_input; 132 parser_input = input_selected; 133 switch (t) 134 { 135 case input_script: return INPUT_SCRIPT; break; 136 case input_mri_script: return INPUT_MRI_SCRIPT; break; 137 case input_version_script: return INPUT_VERSION_SCRIPT; break; 138 case input_defsym: return INPUT_DEFSYM; break; 139 default: abort (); 140 } 141 } 142 143 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*" { comment (); } 144 145 146 <DEFSYMEXP>"-" { RTOKEN('-');} 147 <DEFSYMEXP>"+" { RTOKEN('+');} 148 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; } 149 <DEFSYMEXP>"=" { RTOKEN('='); } 150 151 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { 152 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16); 153 yylval.bigint.str = NULL; 154 return INT; 155 } 156 157 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { 158 int ibase ; 159 switch (yytext[yyleng - 1]) { 160 case 'X': 161 case 'x': 162 case 'H': 163 case 'h': 164 ibase = 16; 165 break; 166 case 'O': 167 case 'o': 168 ibase = 8; 169 break; 170 case 'B': 171 case 'b': 172 ibase = 2; 173 break; 174 default: 175 ibase = 10; 176 } 177 yylval.integer = bfd_scan_vma (yytext, 0, 178 ibase); 179 yylval.bigint.str = NULL; 180 return INT; 181 } 182 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? { 183 char *s = yytext; 184 int ibase = 0; 185 186 if (*s == '$') 187 { 188 ++s; 189 ibase = 16; 190 } 191 yylval.integer = bfd_scan_vma (s, 0, ibase); 192 yylval.bigint.str = NULL; 193 if (yytext[yyleng - 1] == 'M' 194 || yytext[yyleng - 1] == 'm') 195 { 196 yylval.integer *= 1024 * 1024; 197 } 198 else if (yytext[yyleng - 1] == 'K' 199 || yytext[yyleng - 1]=='k') 200 { 201 yylval.integer *= 1024; 202 } 203 else if (yytext[0] == '0' 204 && (yytext[1] == 'x' 205 || yytext[1] == 'X')) 206 { 207 yylval.bigint.str = xstrdup (yytext + 2); 208 } 209 return INT; 210 } 211 <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} 212 <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} 213 <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} 214 <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} 215 <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} 216 <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} 217 <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} 218 <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} 219 <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} 220 <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} 221 <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} 222 <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} 223 <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} 224 <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} 225 <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} 226 <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} 227 <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} 228 <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} 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>"=" { RTOKEN('=');} 243 <BOTH,SCRIPT,EXPRESSION,MRI>"}" { RTOKEN('}') ; } 244 <BOTH,SCRIPT,EXPRESSION,MRI>"{" { RTOKEN('{'); } 245 <BOTH,SCRIPT,EXPRESSION,MRI>")" { RTOKEN(')');} 246 <BOTH,SCRIPT,EXPRESSION,MRI>"(" { RTOKEN('(');} 247 <BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } 248 <BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} 249 <BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} 250 <BOTH,SCRIPT>"ORIGIN" { RTOKEN(ORIGIN);} 251 <BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);} 252 <EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} 253 <EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} 254 <BOTH,SCRIPT>"LENGTH" { RTOKEN(LENGTH);} 255 <EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} 256 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} 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>"MAX" { RTOKEN(MAX_K); } 261 <EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); } 262 <EXPRESSION,BOTH>"ASSERT" { RTOKEN(ASSERT_K); } 263 <BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} 264 <BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);} 265 <EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} 266 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} 267 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} 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>"DEFINED" { RTOKEN(DEFINED);} 276 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);} 277 <BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);} 278 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);} 279 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);} 280 <BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);} 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" { RTOKEN(SORT); } 297 <EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);} 298 <EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);} 299 <EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);} 300 <EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);} 301 <EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);} 302 <BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);} 303 <BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);} 304 <BOTH,SCRIPT>"l" { RTOKEN( LENGTH);} 305 <BOTH,SCRIPT>"len" { RTOKEN( LENGTH);} 306 <BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);} 307 <BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); } 308 <EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);} 309 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN" { RTOKEN(SUBALIGN);} 310 <EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } 311 <EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); } 312 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); } 313 <MRI>"#".*\n? { ++ lineno; } 314 <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } 315 <MRI>"*".* { /* Mri comment line */ } 316 <MRI>";".* { /* Mri comment line */ } 317 <MRI>"END" { RTOKEN(ENDWORD); } 318 <MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} 319 <MRI>"ALIGN" { RTOKEN(ALIGN_K);} 320 <MRI>"CHIP" { RTOKEN(CHIP); } 321 <MRI>"BASE" { RTOKEN(BASE); } 322 <MRI>"ALIAS" { RTOKEN(ALIAS); } 323 <MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } 324 <MRI>"LOAD" { RTOKEN(LOAD); } 325 <MRI>"PUBLIC" { RTOKEN(PUBLIC); } 326 <MRI>"ORDER" { RTOKEN(ORDER); } 327 <MRI>"NAME" { RTOKEN(NAMEWORD); } 328 <MRI>"FORMAT" { RTOKEN(FORMAT); } 329 <MRI>"CASE" { RTOKEN(CASE); } 330 <MRI>"START" { RTOKEN(START); } 331 <MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 332 <MRI>"SECT" { RTOKEN(SECT); } 333 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } 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>"extern" { RTOKEN(EXTERN); } 348 <MRI>"start" { RTOKEN(START); } 349 <MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 350 <MRI>"sect" { RTOKEN(SECT); } 351 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } 352 353 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 354 /* Filename without commas, needed to parse mri stuff */ 355 yylval.name = xstrdup (yytext); 356 return NAME; 357 } 358 359 360 <BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* { 361 yylval.name = xstrdup (yytext); 362 return NAME; 363 } 364 <BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ { 365 yylval.name = xstrdup (yytext + 2); 366 return LNAME; 367 } 368 <SCRIPT>{WILDCHAR}* { 369 /* Annoyingly, this pattern can match comments, and we have 370 longest match issues to consider. So if the first two 371 characters are a comment opening, put the input back and 372 try again. */ 373 if (yytext[0] == '/' && yytext[1] == '*') 374 { 375 yyless (2); 376 comment (); 377 } 378 else 379 { 380 yylval.name = xstrdup (yytext); 381 return NAME; 382 } 383 } 384 385 <EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" { 386 /* No matter the state, quotes 387 give what's inside */ 388 yylval.name = xstrdup (yytext + 1); 389 yylval.name[yyleng - 2] = 0; 390 return NAME; 391 } 392 <BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} 393 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+ { } 394 395 <VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; } 396 397 <VERS_NODE>global { RTOKEN(GLOBAL); } 398 399 <VERS_NODE>local { RTOKEN(LOCAL); } 400 401 <VERS_NODE>extern { RTOKEN(EXTERN); } 402 403 <VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext); 404 return VERS_IDENTIFIER; } 405 406 <VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext); 407 return VERS_TAG; } 408 409 <VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; } 410 411 <VERS_SCRIPT>"{" { BEGIN(VERS_NODE); 412 vers_node_nesting = 0; 413 return *yytext; 414 } 415 <VERS_SCRIPT>"}" { return *yytext; } 416 <VERS_NODE>"{" { vers_node_nesting++; return *yytext; } 417 <VERS_NODE>"}" { if (--vers_node_nesting < 0) 418 BEGIN(VERS_SCRIPT); 419 return *yytext; 420 } 421 422 <VERS_START,VERS_NODE,VERS_SCRIPT>[\n] { lineno++; } 423 424 <VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ } 425 426 <VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+ { /* Eat up whitespace */ } 427 428 <<EOF>> { 429 include_stack_ptr--; 430 431 if (include_stack_ptr == 0) 432 { 433 yyterminate (); 434 } 435 else 436 { 437 yy_switch_to_buffer (include_stack[include_stack_ptr]); 438 } 439 440 ldfile_input_filename = file_name_stack[include_stack_ptr - 1]; 441 lineno = lineno_stack[include_stack_ptr]; 442 443 return END; 444 } 445 446 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>. lex_warn_invalid (" in script", yytext); 447 <EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid (" in expression", yytext); 448 449 %% 450 451 452 /* Switch flex to reading script file NAME, open on FILE, 453 saving the current input info on the include stack. */ 454 455 void 456 lex_push_file (FILE *file, const char *name) 457 { 458 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 459 { 460 einfo ("%F:includes nested too deeply\n"); 461 } 462 file_name_stack[include_stack_ptr] = name; 463 lineno_stack[include_stack_ptr] = lineno; 464 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 465 466 include_stack_ptr++; 467 lineno = 1; 468 yyin = file; 469 yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE)); 470 } 471 472 /* Return a newly created flex input buffer containing STRING, 473 which is SIZE bytes long. */ 474 475 static YY_BUFFER_STATE 476 yy_create_string_buffer (const char *string, size_t size) 477 { 478 YY_BUFFER_STATE b; 479 480 /* Calls to m-alloc get turned by sed into xm-alloc. */ 481 b = malloc (sizeof (struct yy_buffer_state)); 482 b->yy_input_file = 0; 483 b->yy_buf_size = size; 484 485 /* yy_ch_buf has to be 2 characters longer than the size given because 486 we need to put in 2 end-of-buffer characters. */ 487 b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3)); 488 489 b->yy_ch_buf[0] = '\n'; 490 strcpy (b->yy_ch_buf+1, string); 491 b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR; 492 b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR; 493 b->yy_n_chars = size+1; 494 b->yy_buf_pos = &b->yy_ch_buf[1]; 495 496 b->yy_is_our_buffer = 1; 497 b->yy_is_interactive = 0; 498 b->yy_at_bol = 1; 499 b->yy_fill_buffer = 0; 500 501 /* flex 2.4.7 changed the interface. FIXME: We should not be using 502 a flex internal interface in the first place! */ 503 #ifdef YY_BUFFER_NEW 504 b->yy_buffer_status = YY_BUFFER_NEW; 505 #else 506 b->yy_eof_status = EOF_NOT_SEEN; 507 #endif 508 509 return b; 510 } 511 512 /* Switch flex to reading from STRING, saving the current input info 513 on the include stack. */ 514 515 void 516 lex_redirect (const char *string) 517 { 518 YY_BUFFER_STATE tmp; 519 520 yy_init = 0; 521 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 522 { 523 einfo("%F: macros nested too deeply\n"); 524 } 525 file_name_stack[include_stack_ptr] = "redirect"; 526 lineno_stack[include_stack_ptr] = lineno; 527 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 528 include_stack_ptr++; 529 lineno = 1; 530 tmp = yy_create_string_buffer (string, strlen (string)); 531 yy_switch_to_buffer (tmp); 532 } 533 534 /* Functions to switch to a different flex start condition, 535 saving the current start condition on `state_stack'. */ 536 537 static int state_stack[MAX_INCLUDE_DEPTH * 2]; 538 static int *state_stack_p = state_stack; 539 540 void 541 ldlex_script (void) 542 { 543 *(state_stack_p)++ = yy_start; 544 BEGIN (SCRIPT); 545 } 546 547 void 548 ldlex_mri_script (void) 549 { 550 *(state_stack_p)++ = yy_start; 551 BEGIN (MRI); 552 } 553 554 void 555 ldlex_version_script (void) 556 { 557 *(state_stack_p)++ = yy_start; 558 BEGIN (VERS_START); 559 } 560 561 void 562 ldlex_version_file (void) 563 { 564 *(state_stack_p)++ = yy_start; 565 BEGIN (VERS_SCRIPT); 566 } 567 568 void 569 ldlex_defsym (void) 570 { 571 *(state_stack_p)++ = yy_start; 572 BEGIN (DEFSYMEXP); 573 } 574 575 void 576 ldlex_expression (void) 577 { 578 *(state_stack_p)++ = yy_start; 579 BEGIN (EXPRESSION); 580 } 581 582 void 583 ldlex_both (void) 584 { 585 *(state_stack_p)++ = yy_start; 586 BEGIN (BOTH); 587 } 588 589 void 590 ldlex_popstate (void) 591 { 592 yy_start = *(--state_stack_p); 593 } 594 595 596 /* Place up to MAX_SIZE characters in BUF and return in *RESULT 597 either the number of characters read, or 0 to indicate EOF. */ 598 599 static void 600 yy_input (char *buf, int *result, int max_size) 601 { 602 *result = 0; 603 if (YY_CURRENT_BUFFER->yy_input_file) 604 { 605 if (yyin) 606 { 607 *result = fread (buf, 1, max_size, yyin); 608 if (*result < max_size && ferror (yyin)) 609 einfo ("%F%P: read in flex scanner failed\n"); 610 } 611 } 612 } 613 614 /* Eat the rest of a C-style comment. */ 615 616 static void 617 comment (void) 618 { 619 int c; 620 621 while (1) 622 { 623 c = input(); 624 while (c != '*' && c != EOF) 625 { 626 if (c == '\n') 627 lineno++; 628 c = input(); 629 } 630 631 if (c == '*') 632 { 633 c = input(); 634 while (c == '*') 635 c = input(); 636 if (c == '/') 637 break; /* found the end */ 638 } 639 640 if (c == '\n') 641 lineno++; 642 643 if (c == EOF) 644 { 645 einfo( "%F%P: EOF in comment\n"); 646 break; 647 } 648 } 649 } 650 651 /* Warn the user about a garbage character WHAT in the input 652 in context WHERE. */ 653 654 static void 655 lex_warn_invalid (char *where, char *what) 656 { 657 char buf[5]; 658 659 /* If we have found an input file whose format we do not recognize, 660 and we are therefore treating it as a linker script, and we find 661 an invalid character, then most likely this is a real object file 662 of some different format. Treat it as such. */ 663 if (ldfile_assumed_script) 664 { 665 bfd_set_error (bfd_error_file_not_recognized); 666 einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename); 667 } 668 669 if (! ISPRINT (*what)) 670 { 671 sprintf (buf, "\\%03o", (unsigned int) *what); 672 what = buf; 673 } 674 675 einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where); 676 } 677