| 1 | %{ |
| 2 | /* |
| 3 | * $Id$ |
| 4 | * |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | This is a YACC grammer intended to parse a superset of the AT&T |
| 10 | linker scripting languaue. |
| 11 | |
| 12 | |
| 13 | Written by Steve Chamberlain steve@cygnus.com |
| 14 | */ |
| 15 | |
| 16 | |
| 17 | |
| 18 | #include "sysdep.h" |
| 19 | #include "bfd.h" |
| 20 | #include "ld.h" |
| 21 | #include "ldexp.h" |
| 22 | #include "ldversion.h" |
| 23 | #include "ldlang.h" |
| 24 | #include "ld-emul.h" |
| 25 | #include "ldfile.h" |
| 26 | #include "ldmisc.h" |
| 27 | #define YYDEBUG 1 |
| 28 | |
| 29 | boolean option_v; |
| 30 | extern unsigned int lineno; |
| 31 | extern boolean trace_files; |
| 32 | extern boolean write_map; |
| 33 | |
| 34 | boolean hex_mode; |
| 35 | |
| 36 | |
| 37 | |
| 38 | |
| 39 | lang_memory_region_type *region; |
| 40 | |
| 41 | |
| 42 | lang_memory_region_type *lang_memory_region_lookup(); |
| 43 | lang_output_section_statement_type *lang_output_section_statement_lookup(); |
| 44 | |
| 45 | #ifdef __STDC__ |
| 46 | |
| 47 | void lang_add_data(int type, union etree_union *exp); |
| 48 | void lang_enter_output_section_statement(char *output_section_statement_name, etree_type *address_exp, bfd_vma block_value); |
| 49 | |
| 50 | #else |
| 51 | |
| 52 | void lang_add_data(); |
| 53 | void lang_enter_output_section_statement(); |
| 54 | |
| 55 | #endif /* __STDC__ */ |
| 56 | |
| 57 | extern args_type command_line; |
| 58 | char *current_file; |
| 59 | boolean ldgram_want_filename = true; |
| 60 | boolean had_script = false; |
| 61 | boolean force_make_executable = false; |
| 62 | boolean ldgram_in_expression = false; |
| 63 | boolean ldgram_in_script = false; |
| 64 | boolean ldgram_in_defsym = false; |
| 65 | /* LOCALS */ |
| 66 | |
| 67 | |
| 68 | |
| 69 | |
| 70 | %} |
| 71 | %union { |
| 72 | bfd_vma integer; |
| 73 | int voidval; |
| 74 | char *name; |
| 75 | int token; |
| 76 | union etree_union *etree; |
| 77 | asection *section; |
| 78 | struct lang_output_section_statement_struct *output_section_statement; |
| 79 | union lang_statement_union **statement_ptr; |
| 80 | int lineno; |
| 81 | struct { |
| 82 | FILE *file; |
| 83 | char *name; |
| 84 | unsigned int lineno; |
| 85 | } state; |
| 86 | |
| 87 | |
| 88 | } |
| 89 | |
| 90 | %type <etree> exp opt_exp exp_head |
| 91 | %type <integer> fill_opt opt_block |
| 92 | %type <name> memspec_opt |
| 93 | %token <integer> INT CHAR |
| 94 | %token <name> NAME |
| 95 | %type <integer> length |
| 96 | |
| 97 | %right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ |
| 98 | %right <token> '?' ':' |
| 99 | %left <token> OROR |
| 100 | %left <token> ANDAND |
| 101 | %left <token> '|' |
| 102 | %left <token> '^' |
| 103 | %left <token> '&' |
| 104 | %left <token> EQ NE |
| 105 | %left <token> '<' '>' LE GE |
| 106 | %left <token> LSHIFT RSHIFT |
| 107 | %left <token> '+' '-' |
| 108 | %left <token> '*' '/' '%' |
| 109 | %right UNARY |
| 110 | %left <token> '(' |
| 111 | %token <token> ALIGN_K BLOCK LONG SHORT BYTE |
| 112 | %token SECTIONS |
| 113 | %token '{' '}' |
| 114 | %token ALIGNMENT SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION |
| 115 | %token NEXT SIZEOF ADDR SCRIPT ENDSCRIPT |
| 116 | %token MEMORY |
| 117 | %token DSECT NOLOAD COPY INFO OVERLAY |
| 118 | %token NAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY |
| 119 | %token OPTION_e OPTION_c OPTION_noinhibit_exec OPTION_s OPTION_S |
| 120 | %token OPTION_format OPTION_F OPTION_u |
| 121 | |
| 122 | %token OPTION_d OPTION_dc OPTION_dp OPTION_x OPTION_X |
| 123 | %token OPTION_v OPTION_M OPTION_t STARTUP HLL SYSLIB FLOAT NOFLOAT OPTION_defsym |
| 124 | %token OPTION_n OPTION_r OPTION_o OPTION_b OPTION_A OPTION_R |
| 125 | %token <name> OPTION_l OPTION_L OPTION_T OPTION_Aarch OPTION_Tfile OPTION_Texp |
| 126 | %token OPTION_Ur |
| 127 | %token ORIGIN FILL OPTION_g |
| 128 | %token LENGTH BIND SUBSECTION_ALIGN CREATE_OBJECT_SYMBOLS INPUT OUTPUT |
| 129 | %type <token> assign_op SIZEOF NEXT ADDR |
| 130 | %type <etree> assignment |
| 131 | %type <name> filename |
| 132 | |
| 133 | %{ |
| 134 | ld_config_type config; |
| 135 | %} |
| 136 | |
| 137 | %% |
| 138 | |
| 139 | |
| 140 | |
| 141 | file: command_line { lang_final(); }; |
| 142 | |
| 143 | |
| 144 | filename: |
| 145 | NAME; |
| 146 | |
| 147 | command_line: |
| 148 | command_line command_line_option |
| 149 | | |
| 150 | ; |
| 151 | |
| 152 | command_line_option: |
| 153 | SCRIPT ifile_list ENDSCRIPT |
| 154 | | OPTION_v |
| 155 | { |
| 156 | ldversion(); |
| 157 | option_v = true; |
| 158 | } |
| 159 | | OPTION_t { |
| 160 | trace_files = true; |
| 161 | } |
| 162 | | OPTION_M { |
| 163 | write_map = true; |
| 164 | } |
| 165 | | OPTION_n { |
| 166 | config.magic_demand_paged = false; |
| 167 | config.make_executable = false; |
| 168 | } |
| 169 | | OPTION_s { |
| 170 | strip_symbols = STRIP_ALL; |
| 171 | } |
| 172 | | OPTION_S { |
| 173 | strip_symbols = STRIP_DEBUGGER; |
| 174 | } |
| 175 | | OPTION_u NAME { |
| 176 | ldlang_add_undef($2); |
| 177 | } |
| 178 | |
| 179 | | OPTION_r { |
| 180 | config.relocateable_output = true; |
| 181 | config.build_constructors = false; |
| 182 | config.magic_demand_paged = false; |
| 183 | } |
| 184 | | OPTION_Ur { |
| 185 | config.relocateable_output = true; |
| 186 | config.build_constructors = true; |
| 187 | config.magic_demand_paged = false; |
| 188 | } |
| 189 | | OPTION_o filename |
| 190 | { |
| 191 | lang_add_output($2); |
| 192 | } |
| 193 | | OPTION_e NAME |
| 194 | { lang_add_entry($2); |
| 195 | } |
| 196 | | OPTION_X { |
| 197 | discard_locals = DISCARD_L; |
| 198 | } |
| 199 | | OPTION_x { |
| 200 | discard_locals = DISCARD_ALL; |
| 201 | } |
| 202 | |
| 203 | | OPTION_noinhibit_exec |
| 204 | { |
| 205 | force_make_executable = true; |
| 206 | } |
| 207 | | OPTION_d { |
| 208 | command_line.force_common_definition = true; |
| 209 | } |
| 210 | | OPTION_dc |
| 211 | { |
| 212 | command_line.force_common_definition = true; |
| 213 | } |
| 214 | | OPTION_g |
| 215 | { |
| 216 | /* Ignored */ |
| 217 | } |
| 218 | | OPTION_dp |
| 219 | { |
| 220 | command_line.force_common_definition = true; |
| 221 | } |
| 222 | | OPTION_format NAME |
| 223 | { |
| 224 | lang_add_target($2); |
| 225 | } |
| 226 | | OPTION_Texp |
| 227 | { |
| 228 | hex_mode =true; |
| 229 | } |
| 230 | INT |
| 231 | { |
| 232 | lang_section_start($1,exp_intop($3)); |
| 233 | hex_mode = false; |
| 234 | } |
| 235 | |
| 236 | | OPTION_Aarch |
| 237 | { |
| 238 | ldfile_add_arch($1); |
| 239 | } |
| 240 | | OPTION_b NAME |
| 241 | { |
| 242 | lang_add_target($2); |
| 243 | } |
| 244 | | OPTION_L |
| 245 | { |
| 246 | ldfile_add_library_path($1); |
| 247 | } |
| 248 | | OPTION_F |
| 249 | { |
| 250 | /* Ignore */ |
| 251 | } |
| 252 | | NAME |
| 253 | { lang_add_input_file($1,lang_input_file_is_file_enum, |
| 254 | (char *)NULL); } |
| 255 | | OPTION_c filename script_file |
| 256 | { ldfile_open_command_file($2); } |
| 257 | | OPTION_Tfile |
| 258 | { ldfile_open_command_file($1); } script_file |
| 259 | |
| 260 | | OPTION_T filename |
| 261 | { ldfile_open_command_file($2); } script_file |
| 262 | |
| 263 | | OPTION_l |
| 264 | { |
| 265 | lang_add_input_file($1, |
| 266 | lang_input_file_is_l_enum, |
| 267 | (char *)NULL); |
| 268 | } |
| 269 | | OPTION_R filename |
| 270 | { |
| 271 | lang_add_input_file($2, |
| 272 | lang_input_file_is_symbols_only_enum, |
| 273 | (char *)NULL); |
| 274 | } |
| 275 | | OPTION_defsym |
| 276 | { |
| 277 | ldgram_in_defsym = true; |
| 278 | ldgram_in_expression = true; |
| 279 | |
| 280 | } |
| 281 | assignment |
| 282 | { |
| 283 | ldgram_in_defsym = false; |
| 284 | ldgram_in_expression = false; |
| 285 | } |
| 286 | | '-' NAME |
| 287 | { info("%P%F Unrecognised option -%s\n", $2); } |
| 288 | |
| 289 | ; |
| 290 | |
| 291 | |
| 292 | |
| 293 | |
| 294 | |
| 295 | |
| 296 | |
| 297 | |
| 298 | script_file: |
| 299 | { ldgram_in_script = true; } |
| 300 | ifile_list ENDSCRIPT |
| 301 | { ldgram_in_script = false; } |
| 302 | |
| 303 | ; |
| 304 | |
| 305 | |
| 306 | ifile_list: |
| 307 | ifile_list ifile_p1 |
| 308 | | |
| 309 | ; |
| 310 | |
| 311 | |
| 312 | |
| 313 | ifile_p1: |
| 314 | memory |
| 315 | | sections |
| 316 | | startup |
| 317 | | high_level_library |
| 318 | | low_level_library |
| 319 | | floating_point_support |
| 320 | | assignment end |
| 321 | | TARGET_K '(' NAME ')' |
| 322 | { lang_add_target($3); } |
| 323 | | SEARCH_DIR '(' filename ')' |
| 324 | { ldfile_add_library_path($3); } |
| 325 | | OUTPUT '(' filename ')' |
| 326 | { lang_add_output($3); } |
| 327 | | OUTPUT_FORMAT '(' NAME ')' |
| 328 | { lang_add_output_format($3); } |
| 329 | | FORCE_COMMON_ALLOCATION |
| 330 | { command_line.force_common_definition = true ; } |
| 331 | | INPUT '(' input_list ')' |
| 332 | | MAP '(' filename ')' |
| 333 | { lang_add_map($3); } |
| 334 | ; |
| 335 | |
| 336 | input_list: |
| 337 | NAME |
| 338 | { lang_add_input_file($1,lang_input_file_is_file_enum, |
| 339 | (char *)NULL); } |
| 340 | | input_list ',' NAME |
| 341 | { lang_add_input_file($3,lang_input_file_is_file_enum, |
| 342 | (char *)NULL); } |
| 343 | | input_list NAME |
| 344 | { lang_add_input_file($2, lang_input_file_is_file_enum, |
| 345 | (char *)NULL); } |
| 346 | ; |
| 347 | |
| 348 | sections: |
| 349 | SECTIONS '{'sec_or_group_p1 '}' |
| 350 | ; |
| 351 | |
| 352 | sec_or_group_p1: |
| 353 | sec_or_group_p1 section |
| 354 | | sec_or_group_p1 statement_anywhere |
| 355 | | |
| 356 | ; |
| 357 | |
| 358 | statement_anywhere: |
| 359 | ENTRY '(' NAME ')' |
| 360 | { lang_add_entry($3); } |
| 361 | | assignment end |
| 362 | ; |
| 363 | |
| 364 | file_NAME_list: |
| 365 | NAME |
| 366 | { lang_add_wild($1, current_file); } |
| 367 | | file_NAME_list opt_comma NAME |
| 368 | { lang_add_wild($3, current_file); } |
| 369 | ; |
| 370 | |
| 371 | input_section_spec: |
| 372 | NAME |
| 373 | { |
| 374 | lang_add_wild((char *)NULL, $1); |
| 375 | } |
| 376 | | '[' |
| 377 | { |
| 378 | current_file = (char *)NULL; |
| 379 | } |
| 380 | file_NAME_list |
| 381 | ']' |
| 382 | | NAME |
| 383 | { |
| 384 | current_file =$1; |
| 385 | } |
| 386 | '(' file_NAME_list ')' |
| 387 | | '*' |
| 388 | { |
| 389 | current_file = (char *)NULL; |
| 390 | } |
| 391 | '(' file_NAME_list ')' |
| 392 | ; |
| 393 | |
| 394 | statement: |
| 395 | statement assignment end |
| 396 | | statement CREATE_OBJECT_SYMBOLS |
| 397 | { |
| 398 | lang_add_attribute(lang_object_symbols_statement_enum); } |
| 399 | |
| 400 | | statement input_section_spec |
| 401 | | statement length '(' exp_head ')' |
| 402 | { |
| 403 | lang_add_data($2,$4); |
| 404 | } |
| 405 | |
| 406 | | statement FILL '(' exp_head ')' |
| 407 | { |
| 408 | lang_add_fill |
| 409 | (exp_get_value_int($4, |
| 410 | 0, |
| 411 | "fill value", |
| 412 | lang_first_phase_enum)); |
| 413 | } |
| 414 | | |
| 415 | ; |
| 416 | |
| 417 | length: |
| 418 | LONG |
| 419 | { $$ = $1; } |
| 420 | | SHORT |
| 421 | { $$ = $1; } |
| 422 | | BYTE |
| 423 | { $$ = $1; } |
| 424 | ; |
| 425 | |
| 426 | fill_opt: |
| 427 | '=' exp_head |
| 428 | { |
| 429 | $$ = exp_get_value_int($2, |
| 430 | 0, |
| 431 | "fill value", |
| 432 | lang_first_phase_enum); |
| 433 | } |
| 434 | | { $$ = 0; } |
| 435 | ; |
| 436 | |
| 437 | |
| 438 | |
| 439 | assign_op: |
| 440 | PLUSEQ |
| 441 | { $$ = '+'; } |
| 442 | | MINUSEQ |
| 443 | { $$ = '-'; } |
| 444 | | MULTEQ |
| 445 | { $$ = '*'; } |
| 446 | | DIVEQ |
| 447 | { $$ = '/'; } |
| 448 | | LSHIFTEQ |
| 449 | { $$ = LSHIFT; } |
| 450 | | RSHIFTEQ |
| 451 | { $$ = RSHIFT; } |
| 452 | | ANDEQ |
| 453 | { $$ = '&'; } |
| 454 | | OREQ |
| 455 | { $$ = '|'; } |
| 456 | |
| 457 | ; |
| 458 | |
| 459 | end: ';' | ',' |
| 460 | ; |
| 461 | |
| 462 | |
| 463 | assignment: |
| 464 | |
| 465 | NAME '=' exp_head |
| 466 | { |
| 467 | lang_add_assignment(exp_assop($2,$1,$3)); |
| 468 | } |
| 469 | | NAME assign_op exp_head |
| 470 | { |
| 471 | lang_add_assignment(exp_assop('=',$1,exp_binop($2,exp_nameop(NAME,$1),$3))); |
| 472 | } |
| 473 | |
| 474 | ; |
| 475 | |
| 476 | |
| 477 | opt_comma: |
| 478 | ',' | ; |
| 479 | |
| 480 | |
| 481 | memory: |
| 482 | MEMORY '{' memory_spec memory_spec_list '}' |
| 483 | ; |
| 484 | |
| 485 | memory_spec_list: |
| 486 | memory_spec_list memory_spec |
| 487 | | memory_spec_list ',' memory_spec |
| 488 | | |
| 489 | ; |
| 490 | |
| 491 | |
| 492 | memory_spec: |
| 493 | NAME |
| 494 | { region = lang_memory_region_lookup($1); } |
| 495 | attributes_opt ':' origin_spec opt_comma length_spec |
| 496 | |
| 497 | { |
| 498 | |
| 499 | |
| 500 | } |
| 501 | ; |
| 502 | origin_spec: |
| 503 | ORIGIN '=' exp |
| 504 | { region->current = |
| 505 | region->origin = |
| 506 | exp_get_vma($3, 0L,"origin", lang_first_phase_enum); } |
| 507 | ; |
| 508 | length_spec: |
| 509 | LENGTH '=' exp |
| 510 | { region->length = exp_get_vma($3, |
| 511 | ~((bfd_vma)0), |
| 512 | "length", |
| 513 | lang_first_phase_enum); |
| 514 | } |
| 515 | |
| 516 | |
| 517 | attributes_opt: |
| 518 | '(' NAME ')' |
| 519 | { |
| 520 | lang_set_flags(®ion->flags, $2); |
| 521 | } |
| 522 | | |
| 523 | |
| 524 | ; |
| 525 | |
| 526 | startup: |
| 527 | STARTUP '(' filename ')' |
| 528 | { lang_startup($3); } |
| 529 | ; |
| 530 | |
| 531 | high_level_library: |
| 532 | HLL '(' high_level_library_NAME_list ')' |
| 533 | | HLL '(' ')' |
| 534 | { ldemul_hll((char *)NULL); } |
| 535 | ; |
| 536 | |
| 537 | high_level_library_NAME_list: |
| 538 | high_level_library_NAME_list opt_comma filename |
| 539 | { ldemul_hll($3); } |
| 540 | | filename |
| 541 | { ldemul_hll($1); } |
| 542 | |
| 543 | ; |
| 544 | |
| 545 | low_level_library: |
| 546 | SYSLIB '(' low_level_library_NAME_list ')' |
| 547 | ; |
| 548 | low_level_library_NAME_list: |
| 549 | low_level_library_NAME_list opt_comma filename |
| 550 | { ldemul_syslib($3); } |
| 551 | | |
| 552 | ; |
| 553 | |
| 554 | floating_point_support: |
| 555 | FLOAT |
| 556 | { lang_float(true); } |
| 557 | | NOFLOAT |
| 558 | { lang_float(false); } |
| 559 | ; |
| 560 | |
| 561 | |
| 562 | |
| 563 | |
| 564 | exp : |
| 565 | '-' exp %prec UNARY |
| 566 | { $$ = exp_unop('-', $2); } |
| 567 | | '(' exp ')' |
| 568 | { $$ = $2; } |
| 569 | | NEXT '(' exp ')' %prec UNARY |
| 570 | { $$ = exp_unop($1,$3); } |
| 571 | | '!' exp %prec UNARY |
| 572 | { $$ = exp_unop('!', $2); } |
| 573 | | '+' exp %prec UNARY |
| 574 | { $$ = $2; } |
| 575 | | '~' exp %prec UNARY |
| 576 | { $$ = exp_unop('~', $2);} |
| 577 | |
| 578 | | exp '*' exp |
| 579 | { $$ = exp_binop('*', $1, $3); } |
| 580 | | exp '/' exp |
| 581 | { $$ = exp_binop('/', $1, $3); } |
| 582 | | exp '%' exp |
| 583 | { $$ = exp_binop('%', $1, $3); } |
| 584 | | exp '+' exp |
| 585 | { $$ = exp_binop('+', $1, $3); } |
| 586 | | exp '-' exp |
| 587 | { $$ = exp_binop('-' , $1, $3); } |
| 588 | | exp LSHIFT exp |
| 589 | { $$ = exp_binop(LSHIFT , $1, $3); } |
| 590 | | exp RSHIFT exp |
| 591 | { $$ = exp_binop(RSHIFT , $1, $3); } |
| 592 | | exp EQ exp |
| 593 | { $$ = exp_binop(EQ , $1, $3); } |
| 594 | | exp NE exp |
| 595 | { $$ = exp_binop(NE , $1, $3); } |
| 596 | | exp LE exp |
| 597 | { $$ = exp_binop(LE , $1, $3); } |
| 598 | | exp GE exp |
| 599 | { $$ = exp_binop(GE , $1, $3); } |
| 600 | | exp '<' exp |
| 601 | { $$ = exp_binop('<' , $1, $3); } |
| 602 | | exp '>' exp |
| 603 | { $$ = exp_binop('>' , $1, $3); } |
| 604 | | exp '&' exp |
| 605 | { $$ = exp_binop('&' , $1, $3); } |
| 606 | | exp '^' exp |
| 607 | { $$ = exp_binop('^' , $1, $3); } |
| 608 | | exp '|' exp |
| 609 | { $$ = exp_binop('|' , $1, $3); } |
| 610 | | exp '?' exp ':' exp |
| 611 | { $$ = exp_trinop('?' , $1, $3, $5); } |
| 612 | | exp ANDAND exp |
| 613 | { $$ = exp_binop(ANDAND , $1, $3); } |
| 614 | | exp OROR exp |
| 615 | { $$ = exp_binop(OROR , $1, $3); } |
| 616 | | DEFINED '(' NAME ')' |
| 617 | { $$ = exp_nameop(DEFINED, $3); } |
| 618 | | INT |
| 619 | { $$ = exp_intop($1); } |
| 620 | |
| 621 | | SIZEOF '(' NAME ')' |
| 622 | { $$ = exp_nameop($1,$3); } |
| 623 | | ADDR '(' NAME ')' |
| 624 | { $$ = exp_nameop($1,$3); } |
| 625 | | ALIGN_K '(' exp ')' |
| 626 | { $$ = exp_unop($1,$3); } |
| 627 | | NAME |
| 628 | { $$ = exp_nameop(NAME,$1); } |
| 629 | ; |
| 630 | |
| 631 | |
| 632 | |
| 633 | |
| 634 | section: NAME opt_exp opt_block ':' opt_things'{' |
| 635 | { |
| 636 | lang_enter_output_section_statement($1,$2,$3); |
| 637 | } |
| 638 | statement '}' fill_opt memspec_opt |
| 639 | { |
| 640 | lang_leave_output_section_statement($10, $11); |
| 641 | } |
| 642 | |
| 643 | ; |
| 644 | |
| 645 | opt_things: |
| 646 | { |
| 647 | |
| 648 | } |
| 649 | ; |
| 650 | |
| 651 | exp_head: |
| 652 | { |
| 653 | ldgram_in_expression = true; |
| 654 | } |
| 655 | exp |
| 656 | { |
| 657 | ldgram_in_expression = false; |
| 658 | $$ = $2; |
| 659 | } |
| 660 | ; |
| 661 | |
| 662 | opt_exp: |
| 663 | exp_head |
| 664 | { $$ = $1; } |
| 665 | | { $$= (etree_type *)NULL; } |
| 666 | ; |
| 667 | |
| 668 | opt_block: |
| 669 | BLOCK '(' exp_head ')' |
| 670 | { $$ = exp_get_value_int($3, |
| 671 | 1L, |
| 672 | "block", |
| 673 | lang_first_phase_enum); |
| 674 | } |
| 675 | | { $$ = 1; } |
| 676 | ; |
| 677 | |
| 678 | memspec_opt: |
| 679 | '>' NAME |
| 680 | { $$ = $2; } |
| 681 | | { $$ = "*default*"; } |
| 682 | ; |
| 683 | |