1%{ 2 3/* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001, 2002, 2003 Free Software Foundation, Inc. 5 6This file is part of GLD, the Gnu Linker. 7 8GLD is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GLD is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GLD; see the file COPYING. If not, write to the Free 20Software Foundation, 59 Temple Place - Suite 330, Boston, MA 2102111-1307, USA. */ 22 23/* 24This 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. */ 52input_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?) */ 56unsigned int lineno = 1; 57 58/* The string we are currently lexing, or NULL if we are reading a 59 file. */ 60const 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 74static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; 75static const char *file_name_stack[MAX_INCLUDE_DEPTH]; 76static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; 77static unsigned int include_stack_ptr = 0; 78static int vers_node_nesting = 0; 79 80static void yy_input (char *, int *, int); 81static void comment (void); 82static 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 98int yywrap (void) { return 1; } 99#endif 100%} 101 102%a 4000 103%o 5000 104 105CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] 106CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] 107FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] 108SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9] 109FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] 110WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*] 111WHITE [ \t\n\r]+ 112 113NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] 114 115V_TAG [.$_a-zA-Z][._a-zA-Z0-9]* 116V_IDENTIFIER [*?.$_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 455void 456lex_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 475static YY_BUFFER_STATE 476yy_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 515void 516lex_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 537static int state_stack[MAX_INCLUDE_DEPTH * 2]; 538static int *state_stack_p = state_stack; 539 540void 541ldlex_script (void) 542{ 543 *(state_stack_p)++ = yy_start; 544 BEGIN (SCRIPT); 545} 546 547void 548ldlex_mri_script (void) 549{ 550 *(state_stack_p)++ = yy_start; 551 BEGIN (MRI); 552} 553 554void 555ldlex_version_script (void) 556{ 557 *(state_stack_p)++ = yy_start; 558 BEGIN (VERS_START); 559} 560 561void 562ldlex_version_file (void) 563{ 564 *(state_stack_p)++ = yy_start; 565 BEGIN (VERS_SCRIPT); 566} 567 568void 569ldlex_defsym (void) 570{ 571 *(state_stack_p)++ = yy_start; 572 BEGIN (DEFSYMEXP); 573} 574 575void 576ldlex_expression (void) 577{ 578 *(state_stack_p)++ = yy_start; 579 BEGIN (EXPRESSION); 580} 581 582void 583ldlex_both (void) 584{ 585 *(state_stack_p)++ = yy_start; 586 BEGIN (BOTH); 587} 588 589void 590ldlex_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 599static void 600yy_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 616static void 617comment (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 654static void 655lex_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