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 7 This file is part of GLD, the Gnu Linker. 8 9 GLD is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2, or (at your option) 12 any later version. 13 14 GLD is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GLD; see the file COPYING. If not, write to the Free 21 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 22 02110-1301, USA. */ 23 24/* 25This was written by steve chamberlain 26 sac@cygnus.com 27*/ 28 29#include "sysdep.h" 30#include "bfd.h" 31#include "safe-ctype.h" 32#include "bfdlink.h" 33#include "ld.h" 34#include "ldmisc.h" 35#include "ldexp.h" 36#include "ldlang.h" 37#include <ldgram.h> 38#include "ldfile.h" 39#include "ldlex.h" 40#include "ldmain.h" 41#include "libiberty.h" 42 43/* The type of top-level parser input. 44 yylex and yyparse (indirectly) both check this. */ 45input_type parser_input; 46 47/* Line number in the current input file. 48 (FIXME Actually, it doesn't appear to get reset for each file?) */ 49unsigned int lineno = 1; 50 51/* The string we are currently lexing, or NULL if we are reading a 52 file. */ 53const char *lex_string = NULL; 54 55/* Support for flex reading from more than one input file (stream). 56 `include_stack' is flex's input state for each open file; 57 `file_name_stack' is the file names. `lineno_stack' is the current 58 line numbers. 59 60 If `include_stack_ptr' is 0, we haven't started reading anything yet. 61 Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */ 62 63#undef YY_INPUT 64#define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size) 65 66#define MAX_INCLUDE_DEPTH 10 67static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 68static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 69static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 70static unsigned int include_stack_ptr = 0; 71static int vers_node_nesting = 0; 72 73static void yy_input (char *, yy_size_t *, yy_size_t); 74static void comment (void); 75static void lex_warn_invalid (char *where, char *what); 76 77/* STATES 78 EXPRESSION definitely in an expression 79 SCRIPT definitely in a script 80 BOTH either EXPRESSION or SCRIPT 81 DEFSYMEXP in an argument to -defsym 82 MRI in an MRI script 83 VERS_START starting a Sun style mapfile 84 VERS_SCRIPT a Sun style mapfile 85 VERS_NODE a node within a Sun style mapfile 86*/ 87#define RTOKEN(x) { yylval.token = x; return x; } 88 89/* Some versions of flex want this. */ 90#ifndef yywrap 91int yywrap (void) { return 1; } 92#endif 93%} 94 95%option nounput 96 97%a 4000 98%o 5000 99 100CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 101CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 102FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 103SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 104FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 105WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*] 106WHITE [ \t\n\r]+ 107 108NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 109 110V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 111V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)* 112 113%s SCRIPT 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>"/*" { 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>"," { 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>"MEMORY" { RTOKEN(MEMORY);} 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,SCRIPT>"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<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 470void 471lex_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 490static YY_BUFFER_STATE 491yy_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 530void 531lex_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 552static int state_stack[MAX_INCLUDE_DEPTH * 2]; 553static int *state_stack_p = state_stack; 554 555void 556ldlex_script (void) 557{ 558 *(state_stack_p)++ = yy_start; 559 BEGIN (SCRIPT); 560} 561 562void 563ldlex_mri_script (void) 564{ 565 *(state_stack_p)++ = yy_start; 566 BEGIN (MRI); 567} 568 569void 570ldlex_version_script (void) 571{ 572 *(state_stack_p)++ = yy_start; 573 BEGIN (VERS_START); 574} 575 576void 577ldlex_version_file (void) 578{ 579 *(state_stack_p)++ = yy_start; 580 BEGIN (VERS_SCRIPT); 581} 582 583void 584ldlex_defsym (void) 585{ 586 *(state_stack_p)++ = yy_start; 587 BEGIN (DEFSYMEXP); 588} 589 590void 591ldlex_expression (void) 592{ 593 *(state_stack_p)++ = yy_start; 594 BEGIN (EXPRESSION); 595} 596 597void 598ldlex_both (void) 599{ 600 *(state_stack_p)++ = yy_start; 601 BEGIN (BOTH); 602} 603 604void 605ldlex_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 614static void 615yy_input (char *buf, yy_size_t *result, yy_size_t 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 631static void 632comment (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 669static void 670lex_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