1%{ 2 3/* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001, 2002, 2003, 2004, 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23/* 24This was written by steve chamberlain 25 sac@cygnus.com 26*/ 27 28 29#include <stdio.h> 30 31#include "bfd.h" 32#include "sysdep.h" 33#include "safe-ctype.h" 34#include "bfdlink.h" 35#include "ld.h" 36#include "ldmisc.h" 37#include "ldexp.h" 38#include "ldlang.h" 39#include <ldgram.h> 40#include "ldfile.h" 41#include "ldlex.h" 42#include "ldmain.h" 43#include "libiberty.h" 44 45/* The type of top-level parser input. 46 yylex and yyparse (indirectly) both check this. */ 47input_type parser_input; 48 49/* Line number in the current input file. 50 (FIXME Actually, it doesn't appear to get reset for each file?) */ 51unsigned int lineno = 1; 52 53/* The string we are currently lexing, or NULL if we are reading a 54 file. */ 55const char *lex_string = NULL; 56 57/* Support for flex reading from more than one input file (stream). 58 `include_stack' is flex's input state for each open file; 59 `file_name_stack' is the file names. `lineno_stack' is the current 60 line numbers. 61 62 If `include_stack_ptr' is 0, we haven't started reading anything yet. 63 Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */ 64 65#undef YY_INPUT 66#define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size) 67 68#define YY_NO_UNPUT 69 70#define MAX_INCLUDE_DEPTH 10 71static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 72static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 73static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 74static unsigned int include_stack_ptr = 0; 75static int vers_node_nesting = 0; 76 77static void yy_input (char *, int *, int); 78static void comment (void); 79static void lex_warn_invalid (char *where, char *what); 80 81/* STATES 82 EXPRESSION definitely in an expression 83 SCRIPT definitely in a script 84 BOTH either EXPRESSION or SCRIPT 85 DEFSYMEXP in an argument to -defsym 86 MRI in an MRI script 87 VERS_START starting a Sun style mapfile 88 VERS_SCRIPT a Sun style mapfile 89 VERS_NODE a node within a Sun style mapfile 90*/ 91#define RTOKEN(x) { yylval.token = x; return x; } 92 93/* Some versions of flex want this. */ 94#ifndef yywrap 95int yywrap (void) { return 1; } 96#endif 97%} 98 99%a 4000 100%o 5000 101 102CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 103CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 104FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 105SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 106FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 107WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*] 108WHITE [ \t\n\r]+ 109 110NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 111 112V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 113V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)* 114 115%s SCRIPT 116%s EXPRESSION 117%s BOTH 118%s DEFSYMEXP 119%s MRI 120%s VERS_START 121%s VERS_SCRIPT 122%s VERS_NODE 123%% 124 125 if (parser_input != input_selected) 126 { 127 /* The first token of the input determines the initial parser state. */ 128 input_type t = parser_input; 129 parser_input = input_selected; 130 switch (t) 131 { 132 case input_script: return INPUT_SCRIPT; break; 133 case input_mri_script: return INPUT_MRI_SCRIPT; break; 134 case input_version_script: return INPUT_VERSION_SCRIPT; 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>"/*" { 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>"," { 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>")" { RTOKEN(')');} 243<BOTH,SCRIPT,EXPRESSION,MRI>"(" { RTOKEN('(');} 244<BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } 245<BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} 246<BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} 247<BOTH,SCRIPT,EXPRESSION>"ORIGIN" { RTOKEN(ORIGIN);} 248<BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);} 249<EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} 250<EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} 251<BOTH,SCRIPT,EXPRESSION>"LENGTH" { RTOKEN(LENGTH);} 252<EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} 253<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} 254<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END" { RTOKEN(DATA_SEGMENT_RELRO_END);} 255<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);} 256<EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);} 257<EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);} 258<EXPRESSION,BOTH>"MAX" { RTOKEN(MAX_K); } 259<EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); } 260<EXPRESSION,BOTH>"ASSERT" { RTOKEN(ASSERT_K); } 261<BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} 262<BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);} 263<EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} 264<EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} 265<EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} 266<EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);} 267<BOTH,SCRIPT>"MAP" { RTOKEN(MAP);} 268<EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);} 269<BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);} 270<BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);} 271<BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);} 272<BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);} 273<EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);} 274<EXPRESSION,BOTH,SCRIPT>"AS_NEEDED" { RTOKEN(AS_NEEDED);} 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_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<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<MRI>"#".*\n? { ++ lineno; } 320<MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } 321<MRI>"*".* { /* Mri comment line */ } 322<MRI>";".* { /* Mri comment line */ } 323<MRI>"END" { RTOKEN(ENDWORD); } 324<MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} 325<MRI>"ALIGN" { RTOKEN(ALIGN_K);} 326<MRI>"CHIP" { RTOKEN(CHIP); } 327<MRI>"BASE" { RTOKEN(BASE); } 328<MRI>"ALIAS" { RTOKEN(ALIAS); } 329<MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } 330<MRI>"LOAD" { RTOKEN(LOAD); } 331<MRI>"PUBLIC" { RTOKEN(PUBLIC); } 332<MRI>"ORDER" { RTOKEN(ORDER); } 333<MRI>"NAME" { RTOKEN(NAMEWORD); } 334<MRI>"FORMAT" { RTOKEN(FORMAT); } 335<MRI>"CASE" { RTOKEN(CASE); } 336<MRI>"START" { RTOKEN(START); } 337<MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 338<MRI>"SECT" { RTOKEN(SECT); } 339<EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } 340<MRI>"end" { RTOKEN(ENDWORD); } 341<MRI>"alignmod" { RTOKEN(ALIGNMOD);} 342<MRI>"align" { RTOKEN(ALIGN_K);} 343<MRI>"chip" { RTOKEN(CHIP); } 344<MRI>"base" { RTOKEN(BASE); } 345<MRI>"alias" { RTOKEN(ALIAS); } 346<MRI>"truncate" { RTOKEN(TRUNCATE); } 347<MRI>"load" { RTOKEN(LOAD); } 348<MRI>"public" { RTOKEN(PUBLIC); } 349<MRI>"order" { RTOKEN(ORDER); } 350<MRI>"name" { RTOKEN(NAMEWORD); } 351<MRI>"format" { RTOKEN(FORMAT); } 352<MRI>"case" { RTOKEN(CASE); } 353<MRI>"extern" { RTOKEN(EXTERN); } 354<MRI>"start" { RTOKEN(START); } 355<MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } 356<MRI>"sect" { RTOKEN(SECT); } 357<EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } 358 359<MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { 360/* Filename without commas, needed to parse mri stuff */ 361 yylval.name = xstrdup (yytext); 362 return NAME; 363 } 364 365 366<BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* { 367 yylval.name = xstrdup (yytext); 368 return NAME; 369 } 370<BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ { 371 yylval.name = xstrdup (yytext + 2); 372 return LNAME; 373 } 374<SCRIPT>{WILDCHAR}* { 375 /* Annoyingly, this pattern can match comments, and we have 376 longest match issues to consider. So if the first two 377 characters are a comment opening, put the input back and 378 try again. */ 379 if (yytext[0] == '/' && yytext[1] == '*') 380 { 381 yyless (2); 382 comment (); 383 } 384 else 385 { 386 yylval.name = xstrdup (yytext); 387 return NAME; 388 } 389 } 390 391<EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" { 392 /* No matter the state, quotes 393 give what's inside */ 394 yylval.name = xstrdup (yytext + 1); 395 yylval.name[yyleng - 2] = 0; 396 return NAME; 397 } 398<BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} 399<MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+ { } 400 401<VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; } 402 403<VERS_NODE>global { RTOKEN(GLOBAL); } 404 405<VERS_NODE>local { RTOKEN(LOCAL); } 406 407<VERS_NODE>extern { RTOKEN(EXTERN); } 408 409<VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext); 410 return VERS_IDENTIFIER; } 411 412<VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext); 413 return VERS_TAG; } 414 415<VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; } 416 417<VERS_SCRIPT>"{" { BEGIN(VERS_NODE); 418 vers_node_nesting = 0; 419 return *yytext; 420 } 421<VERS_SCRIPT>"}" { return *yytext; } 422<VERS_NODE>"{" { vers_node_nesting++; return *yytext; } 423<VERS_NODE>"}" { if (--vers_node_nesting < 0) 424 BEGIN(VERS_SCRIPT); 425 return *yytext; 426 } 427 428<VERS_START,VERS_NODE,VERS_SCRIPT>[\n] { lineno++; } 429 430<VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ } 431 432<VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+ { /* Eat up whitespace */ } 433 434<<EOF>> { 435 include_stack_ptr--; 436 437 if (include_stack_ptr == 0) 438 { 439 yyterminate (); 440 } 441 else 442 { 443 yy_switch_to_buffer (include_stack[include_stack_ptr]); 444 } 445 446 ldfile_input_filename = file_name_stack[include_stack_ptr - 1]; 447 lineno = lineno_stack[include_stack_ptr]; 448 449 return END; 450} 451 452<SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>. lex_warn_invalid (" in script", yytext); 453<EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid (" in expression", yytext); 454 455%% 456 457 458/* Switch flex to reading script file NAME, open on FILE, 459 saving the current input info on the include stack. */ 460 461void 462lex_push_file (FILE *file, const char *name) 463{ 464 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 465 { 466 einfo ("%F:includes nested too deeply\n"); 467 } 468 file_name_stack[include_stack_ptr] = name; 469 lineno_stack[include_stack_ptr] = lineno; 470 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 471 472 include_stack_ptr++; 473 lineno = 1; 474 yyin = file; 475 yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE)); 476} 477 478/* Return a newly created flex input buffer containing STRING, 479 which is SIZE bytes long. */ 480 481static YY_BUFFER_STATE 482yy_create_string_buffer (const char *string, size_t size) 483{ 484 YY_BUFFER_STATE b; 485 486 /* Calls to m-alloc get turned by sed into xm-alloc. */ 487 b = malloc (sizeof (struct yy_buffer_state)); 488 b->yy_input_file = 0; 489 b->yy_buf_size = size; 490 491 /* yy_ch_buf has to be 2 characters longer than the size given because 492 we need to put in 2 end-of-buffer characters. */ 493 b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3)); 494 495 b->yy_ch_buf[0] = '\n'; 496 strcpy (b->yy_ch_buf+1, string); 497 b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR; 498 b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR; 499 b->yy_n_chars = size+1; 500 b->yy_buf_pos = &b->yy_ch_buf[1]; 501 502 b->yy_is_our_buffer = 1; 503 b->yy_is_interactive = 0; 504 b->yy_at_bol = 1; 505 b->yy_fill_buffer = 0; 506 507 /* flex 2.4.7 changed the interface. FIXME: We should not be using 508 a flex internal interface in the first place! */ 509#ifdef YY_BUFFER_NEW 510 b->yy_buffer_status = YY_BUFFER_NEW; 511#else 512 b->yy_eof_status = EOF_NOT_SEEN; 513#endif 514 515 return b; 516} 517 518/* Switch flex to reading from STRING, saving the current input info 519 on the include stack. */ 520 521void 522lex_redirect (const char *string) 523{ 524 YY_BUFFER_STATE tmp; 525 526 yy_init = 0; 527 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) 528 { 529 einfo("%F: macros nested too deeply\n"); 530 } 531 file_name_stack[include_stack_ptr] = "redirect"; 532 lineno_stack[include_stack_ptr] = lineno; 533 include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; 534 include_stack_ptr++; 535 lineno = 1; 536 tmp = yy_create_string_buffer (string, strlen (string)); 537 yy_switch_to_buffer (tmp); 538} 539 540/* Functions to switch to a different flex start condition, 541 saving the current start condition on `state_stack'. */ 542 543static int state_stack[MAX_INCLUDE_DEPTH * 2]; 544static int *state_stack_p = state_stack; 545 546void 547ldlex_script (void) 548{ 549 *(state_stack_p)++ = yy_start; 550 BEGIN (SCRIPT); 551} 552 553void 554ldlex_mri_script (void) 555{ 556 *(state_stack_p)++ = yy_start; 557 BEGIN (MRI); 558} 559 560void 561ldlex_version_script (void) 562{ 563 *(state_stack_p)++ = yy_start; 564 BEGIN (VERS_START); 565} 566 567void 568ldlex_version_file (void) 569{ 570 *(state_stack_p)++ = yy_start; 571 BEGIN (VERS_SCRIPT); 572} 573 574void 575ldlex_defsym (void) 576{ 577 *(state_stack_p)++ = yy_start; 578 BEGIN (DEFSYMEXP); 579} 580 581void 582ldlex_expression (void) 583{ 584 *(state_stack_p)++ = yy_start; 585 BEGIN (EXPRESSION); 586} 587 588void 589ldlex_both (void) 590{ 591 *(state_stack_p)++ = yy_start; 592 BEGIN (BOTH); 593} 594 595void 596ldlex_popstate (void) 597{ 598 yy_start = *(--state_stack_p); 599} 600 601 602/* Place up to MAX_SIZE characters in BUF and return in *RESULT 603 either the number of characters read, or 0 to indicate EOF. */ 604 605static void 606yy_input (char *buf, int *result, int max_size) 607{ 608 *result = 0; 609 if (YY_CURRENT_BUFFER->yy_input_file) 610 { 611 if (yyin) 612 { 613 *result = fread (buf, 1, max_size, yyin); 614 if (*result < max_size && ferror (yyin)) 615 einfo ("%F%P: read in flex scanner failed\n"); 616 } 617 } 618} 619 620/* Eat the rest of a C-style comment. */ 621 622static void 623comment (void) 624{ 625 int c; 626 627 while (1) 628 { 629 c = input(); 630 while (c != '*' && c != EOF) 631 { 632 if (c == '\n') 633 lineno++; 634 c = input(); 635 } 636 637 if (c == '*') 638 { 639 c = input(); 640 while (c == '*') 641 c = input(); 642 if (c == '/') 643 break; /* found the end */ 644 } 645 646 if (c == '\n') 647 lineno++; 648 649 if (c == EOF) 650 { 651 einfo( "%F%P: EOF in comment\n"); 652 break; 653 } 654 } 655} 656 657/* Warn the user about a garbage character WHAT in the input 658 in context WHERE. */ 659 660static void 661lex_warn_invalid (char *where, char *what) 662{ 663 char buf[5]; 664 665 /* If we have found an input file whose format we do not recognize, 666 and we are therefore treating it as a linker script, and we find 667 an invalid character, then most likely this is a real object file 668 of some different format. Treat it as such. */ 669 if (ldfile_assumed_script) 670 { 671 bfd_set_error (bfd_error_file_not_recognized); 672 einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename); 673 } 674 675 if (! ISPRINT (*what)) 676 { 677 sprintf (buf, "\\%03o", (unsigned int) *what); 678 what = buf; 679 } 680 681 einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where); 682} 683