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252b5132 | 1 | /* A YACC grammer to parse a superset of the AT&T linker scripting languaue. |
aa8804e4 | 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com). | |
5 | ||
6 | This file is part of GNU ld. | |
7 | ||
8 | This program 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 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program 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 this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | %{ | |
23 | /* | |
24 | ||
25 | */ | |
26 | ||
27 | #define DONTDECLARE_MALLOC | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | #include "ld.h" | |
33 | #include "ldexp.h" | |
34 | #include "ldver.h" | |
35 | #include "ldlang.h" | |
36 | #include "ldemul.h" | |
37 | #include "ldfile.h" | |
38 | #include "ldmisc.h" | |
39 | #include "ldmain.h" | |
40 | #include "mri.h" | |
41 | #include "ldctor.h" | |
42 | #include "ldlex.h" | |
43 | ||
44 | #ifndef YYDEBUG | |
45 | #define YYDEBUG 1 | |
46 | #endif | |
47 | ||
48 | static enum section_type sectype; | |
49 | ||
50 | lang_memory_region_type *region; | |
51 | ||
52 | struct wildcard_spec current_file; | |
53 | boolean ldgram_want_filename = true; | |
54 | boolean had_script = false; | |
55 | boolean force_make_executable = false; | |
56 | ||
57 | boolean ldgram_in_script = false; | |
58 | boolean ldgram_had_equals = false; | |
59 | boolean ldgram_had_keep = false; | |
60 | char *ldgram_vers_current_lang = NULL; | |
61 | ||
62 | #define ERROR_NAME_MAX 20 | |
63 | static char *error_names[ERROR_NAME_MAX]; | |
64 | static int error_index; | |
65 | #define PUSH_ERROR(x) if (error_index < ERROR_NAME_MAX) error_names[error_index] = x; error_index++; | |
66 | #define POP_ERROR() error_index--; | |
67 | %} | |
68 | %union { | |
69 | bfd_vma integer; | |
70 | char *name; | |
71 | const char *cname; | |
72 | struct wildcard_spec wildcard; | |
73 | int token; | |
74 | union etree_union *etree; | |
75 | struct phdr_info | |
76 | { | |
77 | boolean filehdr; | |
78 | boolean phdrs; | |
79 | union etree_union *at; | |
80 | union etree_union *flags; | |
81 | } phdr; | |
82 | struct lang_nocrossref *nocrossref; | |
83 | struct lang_output_section_phdr_list *section_phdr; | |
84 | struct bfd_elf_version_deps *deflist; | |
85 | struct bfd_elf_version_expr *versyms; | |
86 | struct bfd_elf_version_tree *versnode; | |
87 | } | |
88 | ||
89 | %type <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val | |
90 | %type <etree> opt_exp_without_type | |
91 | %type <integer> fill_opt | |
92 | %type <name> memspec_opt casesymlist | |
93 | %type <cname> wildcard_name | |
94 | %type <wildcard> wildcard_spec | |
95 | %token <integer> INT | |
96 | %token <name> NAME LNAME | |
97 | %type <integer> length | |
98 | %type <phdr> phdr_qualifiers | |
99 | %type <nocrossref> nocrossref_list | |
100 | %type <section_phdr> phdr_opt | |
101 | %type <integer> opt_nocrossrefs | |
102 | ||
103 | %right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ | |
104 | %right <token> '?' ':' | |
105 | %left <token> OROR | |
106 | %left <token> ANDAND | |
107 | %left <token> '|' | |
108 | %left <token> '^' | |
109 | %left <token> '&' | |
110 | %left <token> EQ NE | |
111 | %left <token> '<' '>' LE GE | |
112 | %left <token> LSHIFT RSHIFT | |
113 | ||
114 | %left <token> '+' '-' | |
115 | %left <token> '*' '/' '%' | |
116 | ||
117 | %right UNARY | |
118 | %token END | |
119 | %left <token> '(' | |
120 | %token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE | |
121 | %token SECTIONS PHDRS SORT | |
122 | %token '{' '}' | |
123 | %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH | |
124 | %token SIZEOF_HEADERS | |
125 | %token INCLUDE | |
126 | %token MEMORY DEFSYMEND | |
127 | %token NOLOAD DSECT COPY INFO OVERLAY | |
128 | %token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY | |
129 | %token <integer> NEXT | |
130 | %token SIZEOF ADDR LOADADDR MAX_K MIN_K | |
131 | %token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS | |
132 | %token ORIGIN FILL | |
133 | %token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS | |
134 | %token ALIGNMOD AT PROVIDE | |
aa8804e4 | 135 | %type <token> assign_op atype attributes_opt |
252b5132 RH |
136 | %type <name> filename |
137 | %token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K | |
138 | %token FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL | |
139 | %token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START | |
140 | %token <name> VERS_TAG VERS_IDENTIFIER | |
141 | %token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT | |
142 | %token KEEP | |
143 | %token EXCLUDE_FILE | |
144 | %type <versyms> vers_defns | |
145 | %type <versnode> vers_tag | |
146 | %type <deflist> verdep | |
147 | ||
148 | %% | |
149 | ||
150 | file: | |
151 | INPUT_SCRIPT script_file | |
152 | | INPUT_MRI_SCRIPT mri_script_file | |
153 | | INPUT_VERSION_SCRIPT version_script_file | |
154 | | INPUT_DEFSYM defsym_expr | |
155 | ; | |
156 | ||
157 | ||
158 | filename: NAME; | |
159 | ||
160 | ||
161 | defsym_expr: | |
162 | { ldlex_defsym(); } | |
163 | NAME '=' exp | |
164 | { | |
165 | ldlex_popstate(); | |
166 | lang_add_assignment(exp_assop($3,$2,$4)); | |
167 | } | |
168 | ||
169 | /* SYNTAX WITHIN AN MRI SCRIPT FILE */ | |
170 | mri_script_file: | |
171 | { | |
172 | ldlex_mri_script (); | |
173 | PUSH_ERROR (_("MRI style script")); | |
174 | } | |
175 | mri_script_lines | |
176 | { | |
177 | ldlex_popstate (); | |
178 | mri_draw_tree (); | |
179 | POP_ERROR (); | |
180 | } | |
181 | ; | |
182 | ||
183 | mri_script_lines: | |
184 | mri_script_lines mri_script_command NEWLINE | |
185 | | | |
186 | ; | |
187 | ||
188 | mri_script_command: | |
189 | CHIP exp | |
190 | | CHIP exp ',' exp | |
191 | | NAME { | |
192 | einfo(_("%P%F: unrecognised keyword in MRI style script '%s'\n"),$1); | |
193 | } | |
194 | | LIST { | |
195 | config.map_filename = "-"; | |
196 | } | |
197 | | ORDER ordernamelist | |
198 | | ENDWORD | |
199 | | PUBLIC NAME '=' exp | |
200 | { mri_public($2, $4); } | |
201 | | PUBLIC NAME ',' exp | |
202 | { mri_public($2, $4); } | |
203 | | PUBLIC NAME exp | |
204 | { mri_public($2, $3); } | |
205 | | FORMAT NAME | |
206 | { mri_format($2); } | |
207 | | SECT NAME ',' exp | |
208 | { mri_output_section($2, $4);} | |
209 | | SECT NAME exp | |
210 | { mri_output_section($2, $3);} | |
211 | | SECT NAME '=' exp | |
212 | { mri_output_section($2, $4);} | |
213 | | ALIGN_K NAME '=' exp | |
214 | { mri_align($2,$4); } | |
215 | | ALIGN_K NAME ',' exp | |
216 | { mri_align($2,$4); } | |
217 | | ALIGNMOD NAME '=' exp | |
218 | { mri_alignmod($2,$4); } | |
219 | | ALIGNMOD NAME ',' exp | |
220 | { mri_alignmod($2,$4); } | |
221 | | ABSOLUTE mri_abs_name_list | |
222 | | LOAD mri_load_name_list | |
223 | | NAMEWORD NAME | |
224 | { mri_name($2); } | |
225 | | ALIAS NAME ',' NAME | |
226 | { mri_alias($2,$4,0);} | |
227 | | ALIAS NAME ',' INT | |
228 | { mri_alias($2,0,(int) $4);} | |
229 | | BASE exp | |
230 | { mri_base($2); } | |
231 | | TRUNCATE INT | |
232 | { mri_truncate((unsigned int) $2); } | |
233 | | CASE casesymlist | |
234 | | EXTERN extern_name_list | |
235 | | INCLUDE filename | |
236 | { ldfile_open_command_file ($2); } mri_script_lines END | |
237 | | START NAME | |
238 | { lang_add_entry ($2, false); } | |
239 | | | |
240 | ; | |
241 | ||
242 | ordernamelist: | |
243 | ordernamelist ',' NAME { mri_order($3); } | |
244 | | ordernamelist NAME { mri_order($2); } | |
245 | | | |
246 | ; | |
247 | ||
248 | mri_load_name_list: | |
249 | NAME | |
250 | { mri_load($1); } | |
251 | | mri_load_name_list ',' NAME { mri_load($3); } | |
252 | ; | |
253 | ||
254 | mri_abs_name_list: | |
255 | NAME | |
256 | { mri_only_load($1); } | |
257 | | mri_abs_name_list ',' NAME | |
258 | { mri_only_load($3); } | |
259 | ; | |
260 | ||
261 | casesymlist: | |
262 | /* empty */ { $$ = NULL; } | |
263 | | NAME | |
264 | | casesymlist ',' NAME | |
265 | ; | |
266 | ||
267 | extern_name_list: | |
268 | NAME | |
269 | { ldlang_add_undef ($1); } | |
270 | | extern_name_list NAME | |
271 | { ldlang_add_undef ($2); } | |
272 | | extern_name_list ',' NAME | |
273 | { ldlang_add_undef ($3); } | |
274 | ; | |
275 | ||
276 | script_file: | |
277 | { | |
278 | ldlex_both(); | |
279 | } | |
280 | ifile_list | |
281 | { | |
282 | ldlex_popstate(); | |
283 | } | |
284 | ; | |
285 | ||
286 | ||
287 | ifile_list: | |
288 | ifile_list ifile_p1 | |
289 | | | |
290 | ; | |
291 | ||
292 | ||
293 | ||
294 | ifile_p1: | |
295 | memory | |
296 | | sections | |
297 | | phdrs | |
298 | | startup | |
299 | | high_level_library | |
300 | | low_level_library | |
301 | | floating_point_support | |
302 | | statement_anywhere | |
303 | | version | |
304 | | ';' | |
305 | | TARGET_K '(' NAME ')' | |
306 | { lang_add_target($3); } | |
307 | | SEARCH_DIR '(' filename ')' | |
308 | { ldfile_add_library_path ($3, false); } | |
309 | | OUTPUT '(' filename ')' | |
310 | { lang_add_output($3, 1); } | |
311 | | OUTPUT_FORMAT '(' NAME ')' | |
312 | { lang_add_output_format ($3, (char *) NULL, | |
313 | (char *) NULL, 1); } | |
314 | | OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')' | |
315 | { lang_add_output_format ($3, $5, $7, 1); } | |
316 | | OUTPUT_ARCH '(' NAME ')' | |
317 | { ldfile_set_output_arch($3); } | |
318 | | FORCE_COMMON_ALLOCATION | |
319 | { command_line.force_common_definition = true ; } | |
320 | | INPUT '(' input_list ')' | |
321 | | GROUP | |
322 | { lang_enter_group (); } | |
323 | '(' input_list ')' | |
324 | { lang_leave_group (); } | |
325 | | MAP '(' filename ')' | |
326 | { lang_add_map($3); } | |
327 | | INCLUDE filename | |
328 | { ldfile_open_command_file($2); } ifile_list END | |
329 | | NOCROSSREFS '(' nocrossref_list ')' | |
330 | { | |
331 | lang_add_nocrossref ($3); | |
332 | } | |
333 | | EXTERN '(' extern_name_list ')' | |
334 | ; | |
335 | ||
336 | input_list: | |
337 | NAME | |
338 | { lang_add_input_file($1,lang_input_file_is_search_file_enum, | |
339 | (char *)NULL); } | |
340 | | input_list ',' NAME | |
341 | { lang_add_input_file($3,lang_input_file_is_search_file_enum, | |
342 | (char *)NULL); } | |
343 | | input_list NAME | |
344 | { lang_add_input_file($2,lang_input_file_is_search_file_enum, | |
345 | (char *)NULL); } | |
346 | | LNAME | |
347 | { lang_add_input_file($1,lang_input_file_is_l_enum, | |
348 | (char *)NULL); } | |
349 | | input_list ',' LNAME | |
350 | { lang_add_input_file($3,lang_input_file_is_l_enum, | |
351 | (char *)NULL); } | |
352 | | input_list LNAME | |
353 | { lang_add_input_file($2,lang_input_file_is_l_enum, | |
354 | (char *)NULL); } | |
355 | ; | |
356 | ||
357 | sections: | |
358 | SECTIONS '{' sec_or_group_p1 '}' | |
359 | ; | |
360 | ||
361 | sec_or_group_p1: | |
362 | sec_or_group_p1 section | |
363 | | sec_or_group_p1 statement_anywhere | |
364 | | | |
365 | ; | |
366 | ||
367 | statement_anywhere: | |
368 | ENTRY '(' NAME ')' | |
369 | { lang_add_entry ($3, false); } | |
370 | | assignment end | |
371 | ; | |
372 | ||
373 | /* The '*' and '?' cases are there because the lexer returns them as | |
374 | separate tokens rather than as NAME. */ | |
375 | wildcard_name: | |
376 | NAME | |
377 | { | |
378 | $$ = $1; | |
379 | } | |
380 | | '*' | |
381 | { | |
382 | $$ = "*"; | |
383 | } | |
384 | | '?' | |
385 | { | |
386 | $$ = "?"; | |
387 | } | |
388 | ; | |
389 | ||
390 | wildcard_spec: | |
391 | wildcard_name | |
392 | { | |
393 | $$.name = $1; | |
394 | $$.sorted = false; | |
395 | $$.exclude_name = NULL; | |
396 | } | |
397 | | EXCLUDE_FILE '(' wildcard_name ')' wildcard_name | |
398 | { | |
399 | $$.name = $5; | |
400 | $$.sorted = false; | |
401 | $$.exclude_name = $3; | |
402 | } | |
403 | | SORT '(' wildcard_name ')' | |
404 | { | |
405 | $$.name = $3; | |
406 | $$.sorted = true; | |
407 | $$.exclude_name = NULL; | |
408 | } | |
409 | | SORT '(' EXCLUDE_FILE '(' wildcard_name ')' wildcard_name ')' | |
410 | { | |
411 | $$.name = $7; | |
412 | $$.sorted = true; | |
413 | $$.exclude_name = $5; | |
414 | } | |
415 | ; | |
416 | ||
417 | ||
418 | file_NAME_list: | |
419 | wildcard_spec | |
420 | { | |
421 | lang_add_wild ($1.name, $1.sorted, | |
422 | current_file.name, | |
423 | current_file.sorted, | |
424 | ldgram_had_keep, $1.exclude_name); | |
425 | } | |
426 | | file_NAME_list opt_comma wildcard_spec | |
427 | { | |
428 | lang_add_wild ($3.name, $3.sorted, | |
429 | current_file.name, | |
430 | current_file.sorted, | |
431 | ldgram_had_keep, $3.exclude_name); | |
432 | } | |
433 | ; | |
434 | ||
435 | input_section_spec_no_keep: | |
436 | NAME | |
437 | { | |
438 | lang_add_wild (NULL, false, $1, false, | |
439 | ldgram_had_keep, NULL); | |
440 | } | |
441 | | '[' | |
442 | { | |
443 | current_file.name = NULL; | |
444 | current_file.sorted = false; | |
445 | } | |
446 | file_NAME_list ']' | |
447 | | wildcard_spec | |
448 | { | |
449 | current_file = $1; | |
450 | /* '*' matches any file name. */ | |
451 | if (strcmp (current_file.name, "*") == 0) | |
452 | current_file.name = NULL; | |
453 | } | |
454 | '(' file_NAME_list ')' | |
455 | ; | |
456 | ||
457 | input_section_spec: | |
458 | input_section_spec_no_keep | |
459 | | KEEP '(' | |
460 | { ldgram_had_keep = true; } | |
461 | input_section_spec_no_keep ')' | |
462 | { ldgram_had_keep = false; } | |
463 | ; | |
464 | ||
465 | statement: | |
466 | assignment end | |
467 | | CREATE_OBJECT_SYMBOLS | |
468 | { | |
469 | lang_add_attribute(lang_object_symbols_statement_enum); | |
470 | } | |
471 | | ';' | |
472 | | CONSTRUCTORS | |
473 | { | |
474 | ||
475 | lang_add_attribute(lang_constructors_statement_enum); | |
476 | } | |
477 | | SORT '(' CONSTRUCTORS ')' | |
478 | { | |
479 | constructors_sorted = true; | |
480 | lang_add_attribute (lang_constructors_statement_enum); | |
481 | } | |
482 | | input_section_spec | |
483 | | length '(' mustbe_exp ')' | |
484 | { | |
485 | lang_add_data((int) $1,$3); | |
486 | } | |
487 | ||
488 | | FILL '(' mustbe_exp ')' | |
489 | { | |
490 | lang_add_fill | |
491 | (exp_get_value_int($3, | |
492 | 0, | |
493 | "fill value", | |
494 | lang_first_phase_enum)); | |
495 | } | |
496 | ; | |
497 | ||
498 | statement_list: | |
499 | statement_list statement | |
500 | | statement | |
501 | ; | |
502 | ||
503 | statement_list_opt: | |
504 | /* empty */ | |
505 | | statement_list | |
506 | ; | |
507 | ||
508 | length: | |
509 | QUAD | |
510 | { $$ = $1; } | |
511 | | SQUAD | |
512 | { $$ = $1; } | |
513 | | LONG | |
514 | { $$ = $1; } | |
515 | | SHORT | |
516 | { $$ = $1; } | |
517 | | BYTE | |
518 | { $$ = $1; } | |
519 | ; | |
520 | ||
521 | fill_opt: | |
522 | '=' mustbe_exp | |
523 | { | |
524 | $$ = exp_get_value_int($2, | |
525 | 0, | |
526 | "fill value", | |
527 | lang_first_phase_enum); | |
528 | } | |
529 | | { $$ = 0; } | |
530 | ; | |
531 | ||
532 | ||
533 | ||
534 | assign_op: | |
535 | PLUSEQ | |
536 | { $$ = '+'; } | |
537 | | MINUSEQ | |
538 | { $$ = '-'; } | |
539 | | MULTEQ | |
540 | { $$ = '*'; } | |
541 | | DIVEQ | |
542 | { $$ = '/'; } | |
543 | | LSHIFTEQ | |
544 | { $$ = LSHIFT; } | |
545 | | RSHIFTEQ | |
546 | { $$ = RSHIFT; } | |
547 | | ANDEQ | |
548 | { $$ = '&'; } | |
549 | | OREQ | |
550 | { $$ = '|'; } | |
551 | ||
552 | ; | |
553 | ||
554 | end: ';' | ',' | |
555 | ; | |
556 | ||
557 | ||
558 | assignment: | |
559 | NAME '=' mustbe_exp | |
560 | { | |
561 | lang_add_assignment (exp_assop ($2, $1, $3)); | |
562 | } | |
563 | | NAME assign_op mustbe_exp | |
564 | { | |
565 | lang_add_assignment (exp_assop ('=', $1, | |
566 | exp_binop ($2, | |
567 | exp_nameop (NAME, | |
568 | $1), | |
569 | $3))); | |
570 | } | |
571 | | PROVIDE '(' NAME '=' mustbe_exp ')' | |
572 | { | |
573 | lang_add_assignment (exp_provide ($3, $5)); | |
574 | } | |
575 | ; | |
576 | ||
577 | ||
578 | opt_comma: | |
579 | ',' | ; | |
580 | ||
581 | ||
582 | memory: | |
583 | MEMORY '{' memory_spec memory_spec_list '}' | |
584 | ; | |
585 | ||
586 | memory_spec_list: | |
587 | memory_spec_list memory_spec | |
588 | | memory_spec_list ',' memory_spec | |
589 | | | |
590 | ; | |
591 | ||
592 | ||
593 | memory_spec: NAME | |
594 | { region = lang_memory_region_lookup($1); } | |
595 | attributes_opt ':' | |
596 | origin_spec opt_comma length_spec | |
597 | ||
598 | ; origin_spec: | |
599 | ORIGIN '=' mustbe_exp | |
600 | { region->current = | |
601 | region->origin = | |
602 | exp_get_vma($3, 0L,"origin", lang_first_phase_enum); | |
603 | } | |
604 | ; | |
605 | ||
606 | length_spec: | |
607 | LENGTH '=' mustbe_exp | |
608 | { region->length = exp_get_vma($3, | |
609 | ~((bfd_vma)0), | |
610 | "length", | |
611 | lang_first_phase_enum); | |
612 | } | |
aa8804e4 | 613 | ; |
252b5132 RH |
614 | |
615 | attributes_opt: | |
aa8804e4 ILT |
616 | /* empty */ |
617 | { /* dummy action to avoid bison 1.25 error message */ } | |
618 | | '(' attributes_list ')' | |
619 | ; | |
620 | ||
621 | attributes_list: | |
622 | attributes_string | |
623 | | attributes_list attributes_string | |
624 | ; | |
625 | ||
626 | attributes_string: | |
627 | NAME | |
628 | { lang_set_flags (region, $1, 0); } | |
629 | | '!' NAME | |
630 | { lang_set_flags (region, $2, 1); } | |
252b5132 RH |
631 | ; |
632 | ||
633 | startup: | |
634 | STARTUP '(' filename ')' | |
635 | { lang_startup($3); } | |
636 | ; | |
637 | ||
638 | high_level_library: | |
639 | HLL '(' high_level_library_NAME_list ')' | |
640 | | HLL '(' ')' | |
641 | { ldemul_hll((char *)NULL); } | |
642 | ; | |
643 | ||
644 | high_level_library_NAME_list: | |
645 | high_level_library_NAME_list opt_comma filename | |
646 | { ldemul_hll($3); } | |
647 | | filename | |
648 | { ldemul_hll($1); } | |
649 | ||
650 | ; | |
651 | ||
652 | low_level_library: | |
653 | SYSLIB '(' low_level_library_NAME_list ')' | |
654 | ; low_level_library_NAME_list: | |
655 | low_level_library_NAME_list opt_comma filename | |
656 | { ldemul_syslib($3); } | |
657 | | | |
658 | ; | |
659 | ||
660 | floating_point_support: | |
661 | FLOAT | |
662 | { lang_float(true); } | |
663 | | NOFLOAT | |
664 | { lang_float(false); } | |
665 | ; | |
666 | ||
667 | nocrossref_list: | |
668 | /* empty */ | |
669 | { | |
670 | $$ = NULL; | |
671 | } | |
672 | | NAME nocrossref_list | |
673 | { | |
674 | struct lang_nocrossref *n; | |
675 | ||
676 | n = (struct lang_nocrossref *) xmalloc (sizeof *n); | |
677 | n->name = $1; | |
678 | n->next = $2; | |
679 | $$ = n; | |
680 | } | |
681 | | NAME ',' nocrossref_list | |
682 | { | |
683 | struct lang_nocrossref *n; | |
684 | ||
685 | n = (struct lang_nocrossref *) xmalloc (sizeof *n); | |
686 | n->name = $1; | |
687 | n->next = $3; | |
688 | $$ = n; | |
689 | } | |
690 | ; | |
691 | ||
692 | mustbe_exp: { ldlex_expression(); } | |
693 | exp | |
694 | { ldlex_popstate(); $$=$2;} | |
695 | ; | |
696 | ||
697 | exp : | |
698 | '-' exp %prec UNARY | |
699 | { $$ = exp_unop('-', $2); } | |
700 | | '(' exp ')' | |
701 | { $$ = $2; } | |
702 | | NEXT '(' exp ')' %prec UNARY | |
703 | { $$ = exp_unop((int) $1,$3); } | |
704 | | '!' exp %prec UNARY | |
705 | { $$ = exp_unop('!', $2); } | |
706 | | '+' exp %prec UNARY | |
707 | { $$ = $2; } | |
708 | | '~' exp %prec UNARY | |
709 | { $$ = exp_unop('~', $2);} | |
710 | ||
711 | | exp '*' exp | |
712 | { $$ = exp_binop('*', $1, $3); } | |
713 | | exp '/' exp | |
714 | { $$ = exp_binop('/', $1, $3); } | |
715 | | exp '%' exp | |
716 | { $$ = exp_binop('%', $1, $3); } | |
717 | | exp '+' exp | |
718 | { $$ = exp_binop('+', $1, $3); } | |
719 | | exp '-' exp | |
720 | { $$ = exp_binop('-' , $1, $3); } | |
721 | | exp LSHIFT exp | |
722 | { $$ = exp_binop(LSHIFT , $1, $3); } | |
723 | | exp RSHIFT exp | |
724 | { $$ = exp_binop(RSHIFT , $1, $3); } | |
725 | | exp EQ exp | |
726 | { $$ = exp_binop(EQ , $1, $3); } | |
727 | | exp NE exp | |
728 | { $$ = exp_binop(NE , $1, $3); } | |
729 | | exp LE exp | |
730 | { $$ = exp_binop(LE , $1, $3); } | |
731 | | exp GE exp | |
732 | { $$ = exp_binop(GE , $1, $3); } | |
733 | | exp '<' exp | |
734 | { $$ = exp_binop('<' , $1, $3); } | |
735 | | exp '>' exp | |
736 | { $$ = exp_binop('>' , $1, $3); } | |
737 | | exp '&' exp | |
738 | { $$ = exp_binop('&' , $1, $3); } | |
739 | | exp '^' exp | |
740 | { $$ = exp_binop('^' , $1, $3); } | |
741 | | exp '|' exp | |
742 | { $$ = exp_binop('|' , $1, $3); } | |
743 | | exp '?' exp ':' exp | |
744 | { $$ = exp_trinop('?' , $1, $3, $5); } | |
745 | | exp ANDAND exp | |
746 | { $$ = exp_binop(ANDAND , $1, $3); } | |
747 | | exp OROR exp | |
748 | { $$ = exp_binop(OROR , $1, $3); } | |
749 | | DEFINED '(' NAME ')' | |
750 | { $$ = exp_nameop(DEFINED, $3); } | |
751 | | INT | |
752 | { $$ = exp_intop($1); } | |
753 | | SIZEOF_HEADERS | |
754 | { $$ = exp_nameop(SIZEOF_HEADERS,0); } | |
755 | ||
756 | | SIZEOF '(' NAME ')' | |
757 | { $$ = exp_nameop(SIZEOF,$3); } | |
758 | | ADDR '(' NAME ')' | |
759 | { $$ = exp_nameop(ADDR,$3); } | |
760 | | LOADADDR '(' NAME ')' | |
761 | { $$ = exp_nameop(LOADADDR,$3); } | |
762 | | ABSOLUTE '(' exp ')' | |
763 | { $$ = exp_unop(ABSOLUTE, $3); } | |
764 | | ALIGN_K '(' exp ')' | |
765 | { $$ = exp_unop(ALIGN_K,$3); } | |
766 | | BLOCK '(' exp ')' | |
767 | { $$ = exp_unop(ALIGN_K,$3); } | |
768 | | NAME | |
769 | { $$ = exp_nameop(NAME,$1); } | |
770 | | MAX_K '(' exp ',' exp ')' | |
771 | { $$ = exp_binop (MAX_K, $3, $5 ); } | |
772 | | MIN_K '(' exp ',' exp ')' | |
773 | { $$ = exp_binop (MIN_K, $3, $5 ); } | |
774 | | ASSERT_K '(' exp ',' NAME ')' | |
775 | { $$ = exp_assert ($3, $5); } | |
776 | ; | |
777 | ||
778 | ||
779 | opt_at: | |
780 | AT '(' exp ')' { $$ = $3; } | |
781 | | { $$ = 0; } | |
782 | ; | |
783 | ||
784 | section: NAME { ldlex_expression(); } | |
785 | opt_exp_with_type | |
786 | opt_at { ldlex_popstate (); ldlex_script (); } | |
787 | '{' | |
788 | { | |
789 | lang_enter_output_section_statement($1, $3, | |
790 | sectype, | |
791 | 0, 0, 0, $4); | |
792 | } | |
793 | statement_list_opt | |
794 | '}' { ldlex_popstate (); ldlex_expression (); } | |
795 | memspec_opt phdr_opt fill_opt | |
796 | { | |
797 | ldlex_popstate (); | |
798 | lang_leave_output_section_statement ($13, $11, $12); | |
799 | } | |
800 | opt_comma | |
801 | | OVERLAY | |
802 | { ldlex_expression (); } | |
803 | opt_exp_without_type opt_nocrossrefs opt_at | |
804 | { ldlex_popstate (); ldlex_script (); } | |
805 | '{' | |
806 | { | |
807 | lang_enter_overlay ($3, $5, (int) $4); | |
808 | } | |
809 | overlay_section | |
810 | '}' | |
811 | { ldlex_popstate (); ldlex_expression (); } | |
812 | memspec_opt phdr_opt fill_opt | |
813 | { | |
814 | ldlex_popstate (); | |
815 | lang_leave_overlay ($14, $12, $13); | |
816 | } | |
817 | opt_comma | |
818 | | /* The GROUP case is just enough to support the gcc | |
819 | svr3.ifile script. It is not intended to be full | |
820 | support. I'm not even sure what GROUP is supposed | |
821 | to mean. */ | |
822 | GROUP { ldlex_expression (); } | |
823 | opt_exp_with_type | |
824 | { | |
825 | ldlex_popstate (); | |
826 | lang_add_assignment (exp_assop ('=', ".", $3)); | |
827 | } | |
828 | '{' sec_or_group_p1 '}' | |
829 | ; | |
830 | ||
831 | type: | |
832 | NOLOAD { sectype = noload_section; } | |
833 | | DSECT { sectype = dsect_section; } | |
834 | | COPY { sectype = copy_section; } | |
835 | | INFO { sectype = info_section; } | |
836 | | OVERLAY { sectype = overlay_section; } | |
837 | ; | |
838 | ||
839 | atype: | |
840 | '(' type ')' | |
841 | | /* EMPTY */ { sectype = normal_section; } | |
842 | | '(' ')' { sectype = normal_section; } | |
843 | ; | |
844 | ||
845 | opt_exp_with_type: | |
846 | exp atype ':' { $$ = $1; } | |
847 | | atype ':' { $$ = (etree_type *)NULL; } | |
848 | | /* The BIND cases are to support the gcc svr3.ifile | |
849 | script. They aren't intended to implement full | |
850 | support for the BIND keyword. I'm not even sure | |
851 | what BIND is supposed to mean. */ | |
852 | BIND '(' exp ')' atype ':' { $$ = $3; } | |
853 | | BIND '(' exp ')' BLOCK '(' exp ')' atype ':' | |
854 | { $$ = $3; } | |
855 | ; | |
856 | ||
857 | opt_exp_without_type: | |
858 | exp ':' { $$ = $1; } | |
859 | | ':' { $$ = (etree_type *) NULL; } | |
860 | ; | |
861 | ||
862 | opt_nocrossrefs: | |
863 | /* empty */ | |
864 | { $$ = 0; } | |
865 | | NOCROSSREFS | |
866 | { $$ = 1; } | |
867 | ; | |
868 | ||
869 | memspec_opt: | |
870 | '>' NAME | |
871 | { $$ = $2; } | |
872 | | { $$ = "*default*"; } | |
873 | ; | |
874 | ||
875 | phdr_opt: | |
876 | /* empty */ | |
877 | { | |
878 | $$ = NULL; | |
879 | } | |
880 | | phdr_opt ':' NAME | |
881 | { | |
882 | struct lang_output_section_phdr_list *n; | |
883 | ||
884 | n = ((struct lang_output_section_phdr_list *) | |
885 | xmalloc (sizeof *n)); | |
886 | n->name = $3; | |
887 | n->used = false; | |
888 | n->next = $1; | |
889 | $$ = n; | |
890 | } | |
891 | ; | |
892 | ||
893 | overlay_section: | |
894 | /* empty */ | |
895 | | overlay_section | |
896 | NAME | |
897 | { | |
898 | ldlex_script (); | |
899 | lang_enter_overlay_section ($2); | |
900 | } | |
901 | '{' statement_list_opt '}' | |
902 | { ldlex_popstate (); ldlex_expression (); } | |
903 | phdr_opt fill_opt | |
904 | { | |
905 | ldlex_popstate (); | |
906 | lang_leave_overlay_section ($9, $8); | |
907 | } | |
908 | opt_comma | |
909 | ; | |
910 | ||
911 | phdrs: | |
912 | PHDRS '{' phdr_list '}' | |
913 | ; | |
914 | ||
915 | phdr_list: | |
916 | /* empty */ | |
917 | | phdr_list phdr | |
918 | ; | |
919 | ||
920 | phdr: | |
921 | NAME { ldlex_expression (); } | |
922 | phdr_type phdr_qualifiers { ldlex_popstate (); } | |
923 | ';' | |
924 | { | |
925 | lang_new_phdr ($1, $3, $4.filehdr, $4.phdrs, $4.at, | |
926 | $4.flags); | |
927 | } | |
928 | ; | |
929 | ||
930 | phdr_type: | |
931 | exp | |
932 | { | |
933 | $$ = $1; | |
934 | ||
935 | if ($1->type.node_class == etree_name | |
936 | && $1->type.node_code == NAME) | |
937 | { | |
938 | const char *s; | |
939 | unsigned int i; | |
940 | static const char * const phdr_types[] = | |
941 | { | |
942 | "PT_NULL", "PT_LOAD", "PT_DYNAMIC", | |
943 | "PT_INTERP", "PT_NOTE", "PT_SHLIB", | |
944 | "PT_PHDR" | |
945 | }; | |
946 | ||
947 | s = $1->name.name; | |
948 | for (i = 0; | |
949 | i < sizeof phdr_types / sizeof phdr_types[0]; | |
950 | i++) | |
951 | if (strcmp (s, phdr_types[i]) == 0) | |
952 | { | |
953 | $$ = exp_intop (i); | |
954 | break; | |
955 | } | |
956 | } | |
957 | } | |
958 | ; | |
959 | ||
960 | phdr_qualifiers: | |
961 | /* empty */ | |
962 | { | |
963 | memset (&$$, 0, sizeof (struct phdr_info)); | |
964 | } | |
965 | | NAME phdr_val phdr_qualifiers | |
966 | { | |
967 | $$ = $3; | |
968 | if (strcmp ($1, "FILEHDR") == 0 && $2 == NULL) | |
969 | $$.filehdr = true; | |
970 | else if (strcmp ($1, "PHDRS") == 0 && $2 == NULL) | |
971 | $$.phdrs = true; | |
972 | else if (strcmp ($1, "FLAGS") == 0 && $2 != NULL) | |
973 | $$.flags = $2; | |
974 | else | |
975 | einfo (_("%X%P:%S: PHDRS syntax error at `%s'\n"), $1); | |
976 | } | |
977 | | AT '(' exp ')' phdr_qualifiers | |
978 | { | |
979 | $$ = $5; | |
980 | $$.at = $3; | |
981 | } | |
982 | ; | |
983 | ||
984 | phdr_val: | |
985 | /* empty */ | |
986 | { | |
987 | $$ = NULL; | |
988 | } | |
989 | | '(' exp ')' | |
990 | { | |
991 | $$ = $2; | |
992 | } | |
993 | ; | |
994 | ||
995 | /* This syntax is used within an external version script file. */ | |
996 | ||
997 | version_script_file: | |
998 | { | |
999 | ldlex_version_file (); | |
1000 | PUSH_ERROR (_("VERSION script")); | |
1001 | } | |
1002 | vers_nodes | |
1003 | { | |
1004 | ldlex_popstate (); | |
1005 | POP_ERROR (); | |
1006 | } | |
1007 | ; | |
1008 | ||
1009 | /* This is used within a normal linker script file. */ | |
1010 | ||
1011 | version: | |
1012 | { | |
1013 | ldlex_version_script (); | |
1014 | } | |
1015 | VERSIONK '{' vers_nodes '}' | |
1016 | { | |
1017 | ldlex_popstate (); | |
1018 | } | |
1019 | ; | |
1020 | ||
1021 | vers_nodes: | |
1022 | vers_node | |
1023 | | vers_nodes vers_node | |
1024 | ; | |
1025 | ||
1026 | vers_node: | |
1027 | VERS_TAG '{' vers_tag '}' ';' | |
1028 | { | |
1029 | lang_register_vers_node ($1, $3, NULL); | |
1030 | } | |
1031 | | VERS_TAG '{' vers_tag '}' verdep ';' | |
1032 | { | |
1033 | lang_register_vers_node ($1, $3, $5); | |
1034 | } | |
1035 | ; | |
1036 | ||
1037 | verdep: | |
1038 | VERS_TAG | |
1039 | { | |
1040 | $$ = lang_add_vers_depend (NULL, $1); | |
1041 | } | |
1042 | | verdep VERS_TAG | |
1043 | { | |
1044 | $$ = lang_add_vers_depend ($1, $2); | |
1045 | } | |
1046 | ; | |
1047 | ||
1048 | vers_tag: | |
1049 | /* empty */ | |
1050 | { | |
1051 | $$ = lang_new_vers_node (NULL, NULL); | |
1052 | } | |
1053 | | vers_defns ';' | |
1054 | { | |
1055 | $$ = lang_new_vers_node ($1, NULL); | |
1056 | } | |
1057 | | GLOBAL ':' vers_defns ';' | |
1058 | { | |
1059 | $$ = lang_new_vers_node ($3, NULL); | |
1060 | } | |
1061 | | LOCAL ':' vers_defns ';' | |
1062 | { | |
1063 | $$ = lang_new_vers_node (NULL, $3); | |
1064 | } | |
1065 | | GLOBAL ':' vers_defns ';' LOCAL ':' vers_defns ';' | |
1066 | { | |
1067 | $$ = lang_new_vers_node ($3, $7); | |
1068 | } | |
1069 | ; | |
1070 | ||
1071 | vers_defns: | |
1072 | VERS_IDENTIFIER | |
1073 | { | |
1074 | $$ = lang_new_vers_regex (NULL, $1, ldgram_vers_current_lang); | |
1075 | } | |
1076 | | vers_defns ';' VERS_IDENTIFIER | |
1077 | { | |
1078 | $$ = lang_new_vers_regex ($1, $3, ldgram_vers_current_lang); | |
1079 | } | |
1080 | | EXTERN NAME '{' | |
1081 | { | |
1082 | $<name>$ = ldgram_vers_current_lang; | |
1083 | ldgram_vers_current_lang = $2; | |
1084 | } | |
1085 | vers_defns '}' | |
1086 | { | |
1087 | ldgram_vers_current_lang = $<name>4; | |
1088 | } | |
1089 | ; | |
1090 | ||
1091 | %% | |
1092 | void | |
1093 | yyerror(arg) | |
1094 | const char *arg; | |
1095 | { | |
1096 | if (ldfile_assumed_script) | |
1097 | einfo (_("%P:%s: file format not recognized; treating as linker script\n"), | |
1098 | ldfile_input_filename); | |
1099 | if (error_index > 0 && error_index < ERROR_NAME_MAX) | |
1100 | einfo ("%P%F:%S: %s in %s\n", arg, error_names[error_index-1]); | |
1101 | else | |
1102 | einfo ("%P%F:%S: %s\n", arg); | |
1103 | } |