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fixed bash/dash/sh issue (Ubuntu)
[zpugcc/jano.git] / toolchain / binutils / ld / ldgram.y
blob6c46c854473d63618c9416fbe0c32913f8558f1d
1 /* A YACC grammar to parse a superset of the AT&T linker scripting language.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003 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 "ldfile.h"
37 #include "ldemul.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 bfd_boolean ldgram_want_filename = TRUE;
53 FILE *saved_script_handle = NULL;
54 bfd_boolean force_make_executable = FALSE;
55
56 bfd_boolean ldgram_in_script = FALSE;
57 bfd_boolean ldgram_had_equals = FALSE;
58 bfd_boolean ldgram_had_keep = FALSE;
59 char *ldgram_vers_current_lang = NULL;
60
61 #define ERROR_NAME_MAX 20
62 static char *error_names[ERROR_NAME_MAX];
63 static int error_index;
64 #define PUSH_ERROR(x) if (error_index < ERROR_NAME_MAX) error_names[error_index] = x; error_index++;
65 #define POP_ERROR() error_index--;
66 %}
67 %union {
68 bfd_vma integer;
69 struct big_int
70 {
71 bfd_vma integer;
72 char *str;
73 } bigint;
74 fill_type *fill;
75 char *name;
76 const char *cname;
77 struct wildcard_spec wildcard;
78 struct wildcard_list *wildcard_list;
79 struct name_list *name_list;
80 int token;
81 union etree_union *etree;
82 struct phdr_info
83 {
84 bfd_boolean filehdr;
85 bfd_boolean phdrs;
86 union etree_union *at;
87 union etree_union *flags;
88 } phdr;
89 struct lang_nocrossref *nocrossref;
90 struct lang_output_section_phdr_list *section_phdr;
91 struct bfd_elf_version_deps *deflist;
92 struct bfd_elf_version_expr *versyms;
93 struct bfd_elf_version_tree *versnode;
94 }
95
96 %type <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val
97 %type <etree> opt_exp_without_type opt_subalign
98 %type <fill> fill_opt fill_exp
99 %type <name_list> exclude_name_list
100 %type <wildcard_list> file_NAME_list
101 %type <name> memspec_opt casesymlist
102 %type <name> memspec_at_opt
103 %type <cname> wildcard_name
104 %type <wildcard> wildcard_spec
105 %token <bigint> INT
106 %token <name> NAME LNAME
107 %type <integer> length
108 %type <phdr> phdr_qualifiers
109 %type <nocrossref> nocrossref_list
110 %type <section_phdr> phdr_opt
111 %type <integer> opt_nocrossrefs
112
113 %right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ
114 %right <token> '?' ':'
115 %left <token> OROR
116 %left <token> ANDAND
117 %left <token> '|'
118 %left <token> '^'
119 %left <token> '&'
120 %left <token> EQ NE
121 %left <token> '<' '>' LE GE
122 %left <token> LSHIFT RSHIFT
123
124 %left <token> '+' '-'
125 %left <token> '*' '/' '%'
126
127 %right UNARY
128 %token END
129 %left <token> '('
130 %token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE
131 %token SECTIONS PHDRS SORT DATA_SEGMENT_ALIGN DATA_SEGMENT_END
132 %token '{' '}'
133 %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
134 %token INHIBIT_COMMON_ALLOCATION
135 %token SIZEOF_HEADERS
136 %token INCLUDE
137 %token MEMORY DEFSYMEND
138 %token NOLOAD DSECT COPY INFO OVERLAY
139 %token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY
140 %token <integer> NEXT
141 %token SIZEOF ADDR LOADADDR MAX_K MIN_K
142 %token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS
143 %token ORIGIN FILL
144 %token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS
145 %token ALIGNMOD AT SUBALIGN PROVIDE
146 %type <token> assign_op atype attributes_opt
147 %type <name> filename
148 %token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K
149 %token FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL
150 %token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START
151 %token <name> VERS_TAG VERS_IDENTIFIER
152 %token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT
153 %token KEEP
154 %token EXCLUDE_FILE
155 %type <versyms> vers_defns
156 %type <versnode> vers_tag
157 %type <deflist> verdep
158
159 %%
160
161 file:
162 INPUT_SCRIPT script_file
163 | INPUT_MRI_SCRIPT mri_script_file
164 | INPUT_VERSION_SCRIPT version_script_file
165 | INPUT_DEFSYM defsym_expr
166 ;
167
168
169 filename: NAME;
170
171
172 defsym_expr:
173 { ldlex_defsym(); }
174 NAME '=' exp
175 {
176 ldlex_popstate();
177 lang_add_assignment(exp_assop($3,$2,$4));
178 }
179 ;
180
181 /* SYNTAX WITHIN AN MRI SCRIPT FILE */
182 mri_script_file:
183 {
184 ldlex_mri_script ();
185 PUSH_ERROR (_("MRI style script"));
186 }
187 mri_script_lines
188 {
189 ldlex_popstate ();
190 mri_draw_tree ();
191 POP_ERROR ();
192 }
193 ;
194
195 mri_script_lines:
196 mri_script_lines mri_script_command NEWLINE
197 |
198 ;
199
200 mri_script_command:
201 CHIP exp
202 | CHIP exp ',' exp
203 | NAME {
204 einfo(_("%P%F: unrecognised keyword in MRI style script '%s'\n"),$1);
205 }
206 | LIST {
207 config.map_filename = "-";
208 }
209 | ORDER ordernamelist
210 | ENDWORD
211 | PUBLIC NAME '=' exp
212 { mri_public($2, $4); }
213 | PUBLIC NAME ',' exp
214 { mri_public($2, $4); }
215 | PUBLIC NAME exp
216 { mri_public($2, $3); }
217 | FORMAT NAME
218 { mri_format($2); }
219 | SECT NAME ',' exp
220 { mri_output_section($2, $4);}
221 | SECT NAME exp
222 { mri_output_section($2, $3);}
223 | SECT NAME '=' exp
224 { mri_output_section($2, $4);}
225 | ALIGN_K NAME '=' exp
226 { mri_align($2,$4); }
227 | ALIGN_K NAME ',' exp
228 { mri_align($2,$4); }
229 | ALIGNMOD NAME '=' exp
230 { mri_alignmod($2,$4); }
231 | ALIGNMOD NAME ',' exp
232 { mri_alignmod($2,$4); }
233 | ABSOLUTE mri_abs_name_list
234 | LOAD mri_load_name_list
235 | NAMEWORD NAME
236 { mri_name($2); }
237 | ALIAS NAME ',' NAME
238 { mri_alias($2,$4,0);}
239 | ALIAS NAME ',' INT
240 { mri_alias ($2, 0, (int) $4.integer); }
241 | BASE exp
242 { mri_base($2); }
243 | TRUNCATE INT
244 { mri_truncate ((unsigned int) $2.integer); }
245 | CASE casesymlist
246 | EXTERN extern_name_list
247 | INCLUDE filename
248 { ldlex_script (); ldfile_open_command_file($2); }
249 mri_script_lines END
250 { ldlex_popstate (); }
251 | START NAME
252 { lang_add_entry ($2, FALSE); }
253 |
254 ;
255
256 ordernamelist:
257 ordernamelist ',' NAME { mri_order($3); }
258 | ordernamelist NAME { mri_order($2); }
259 |
260 ;
261
262 mri_load_name_list:
263 NAME
264 { mri_load($1); }
265 | mri_load_name_list ',' NAME { mri_load($3); }
266 ;
267
268 mri_abs_name_list:
269 NAME
270 { mri_only_load($1); }
271 | mri_abs_name_list ',' NAME
272 { mri_only_load($3); }
273 ;
274
275 casesymlist:
276 /* empty */ { $$ = NULL; }
277 | NAME
278 | casesymlist ',' NAME
279 ;
280
281 extern_name_list:
282 NAME
283 { ldlang_add_undef ($1); }
284 | extern_name_list NAME
285 { ldlang_add_undef ($2); }
286 | extern_name_list ',' NAME
287 { ldlang_add_undef ($3); }
288 ;
289
290 script_file:
291 {
292 ldlex_both();
293 }
294 ifile_list
295 {
296 ldlex_popstate();
297 }
298 ;
299
300
301 ifile_list:
302 ifile_list ifile_p1
303 |
304 ;
305
306
307
308 ifile_p1:
309 memory
310 | sections
311 | phdrs
312 | startup
313 | high_level_library
314 | low_level_library
315 | floating_point_support
316 | statement_anywhere
317 | version
318 | ';'
319 | TARGET_K '(' NAME ')'
320 { lang_add_target($3); }
321 | SEARCH_DIR '(' filename ')'
322 { ldfile_add_library_path ($3, FALSE); }
323 | OUTPUT '(' filename ')'
324 { lang_add_output($3, 1); }
325 | OUTPUT_FORMAT '(' NAME ')'
326 { lang_add_output_format ($3, (char *) NULL,
327 (char *) NULL, 1); }
328 | OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')'
329 { lang_add_output_format ($3, $5, $7, 1); }
330 | OUTPUT_ARCH '(' NAME ')'
331 { ldfile_set_output_arch ($3, bfd_arch_unknown); }
332 | FORCE_COMMON_ALLOCATION
333 { command_line.force_common_definition = TRUE ; }
334 | INHIBIT_COMMON_ALLOCATION
335 { command_line.inhibit_common_definition = TRUE ; }
336 | INPUT '(' input_list ')'
337 | GROUP
338 { lang_enter_group (); }
339 '(' input_list ')'
340 { lang_leave_group (); }
341 | MAP '(' filename ')'
342 { lang_add_map($3); }
343 | INCLUDE filename
344 { ldlex_script (); ldfile_open_command_file($2); }
345 ifile_list END
346 { ldlex_popstate (); }
347 | NOCROSSREFS '(' nocrossref_list ')'
348 {
349 lang_add_nocrossref ($3);
350 }
351 | EXTERN '(' extern_name_list ')'
352 ;
353
354 input_list:
355 NAME
356 { lang_add_input_file($1,lang_input_file_is_search_file_enum,
357 (char *)NULL); }
358 | input_list ',' NAME
359 { lang_add_input_file($3,lang_input_file_is_search_file_enum,
360 (char *)NULL); }
361 | input_list NAME
362 { lang_add_input_file($2,lang_input_file_is_search_file_enum,
363 (char *)NULL); }
364 | LNAME
365 { lang_add_input_file($1,lang_input_file_is_l_enum,
366 (char *)NULL); }
367 | input_list ',' LNAME
368 { lang_add_input_file($3,lang_input_file_is_l_enum,
369 (char *)NULL); }
370 | input_list LNAME
371 { lang_add_input_file($2,lang_input_file_is_l_enum,
372 (char *)NULL); }
373 ;
374
375 sections:
376 SECTIONS '{' sec_or_group_p1 '}'
377 ;
378
379 sec_or_group_p1:
380 sec_or_group_p1 section
381 | sec_or_group_p1 statement_anywhere
382 |
383 ;
384
385 statement_anywhere:
386 ENTRY '(' NAME ')'
387 { lang_add_entry ($3, FALSE); }
388 | assignment end
389 | ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')'
390 { ldlex_popstate ();
391 lang_add_assignment (exp_assert ($4, $6)); }
392 ;
393
394 /* The '*' and '?' cases are there because the lexer returns them as
395 separate tokens rather than as NAME. */
396 wildcard_name:
397 NAME
398 {
399 $$ = $1;
400 }
401 | '*'
402 {
403 $$ = "*";
404 }
405 | '?'
406 {
407 $$ = "?";
408 }
409 ;
410
411 wildcard_spec:
412 wildcard_name
413 {
414 $$.name = $1;
415 $$.sorted = FALSE;
416 $$.exclude_name_list = NULL;
417 }
418 | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name
419 {
420 $$.name = $5;
421 $$.sorted = FALSE;
422 $$.exclude_name_list = $3;
423 }
424 | SORT '(' wildcard_name ')'
425 {
426 $$.name = $3;
427 $$.sorted = TRUE;
428 $$.exclude_name_list = NULL;
429 }
430 | SORT '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
431 {
432 $$.name = $7;
433 $$.sorted = TRUE;
434 $$.exclude_name_list = $5;
435 }
436 ;
437
438 exclude_name_list:
439 exclude_name_list wildcard_name
440 {
441 struct name_list *tmp;
442 tmp = (struct name_list *) xmalloc (sizeof *tmp);
443 tmp->name = $2;
444 tmp->next = $1;
445 $$ = tmp;
446 }
447 |
448 wildcard_name
449 {
450 struct name_list *tmp;
451 tmp = (struct name_list *) xmalloc (sizeof *tmp);
452 tmp->name = $1;
453 tmp->next = NULL;
454 $$ = tmp;
455 }
456 ;
457
458 file_NAME_list:
459 file_NAME_list opt_comma wildcard_spec
460 {
461 struct wildcard_list *tmp;
462 tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
463 tmp->next = $1;
464 tmp->spec = $3;
465 $$ = tmp;
466 }
467 |
468 wildcard_spec
469 {
470 struct wildcard_list *tmp;
471 tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
472 tmp->next = NULL;
473 tmp->spec = $1;
474 $$ = tmp;
475 }
476 ;
477
478 input_section_spec_no_keep:
479 NAME
480 {
481 struct wildcard_spec tmp;
482 tmp.name = $1;
483 tmp.exclude_name_list = NULL;
484 tmp.sorted = FALSE;
485 lang_add_wild (&tmp, NULL, ldgram_had_keep);
486 }
487 | '[' file_NAME_list ']'
488 {
489 lang_add_wild (NULL, $2, ldgram_had_keep);
490 }
491 | wildcard_spec '(' file_NAME_list ')'
492 {
493 lang_add_wild (&$1, $3, ldgram_had_keep);
494 }
495 ;
496
497 input_section_spec:
498 input_section_spec_no_keep
499 | KEEP '('
500 { ldgram_had_keep = TRUE; }
501 input_section_spec_no_keep ')'
502 { ldgram_had_keep = FALSE; }
503 ;
504
505 statement:
506 assignment end
507 | CREATE_OBJECT_SYMBOLS
508 {
509 lang_add_attribute(lang_object_symbols_statement_enum);
510 }
511 | ';'
512 | CONSTRUCTORS
513 {
514
515 lang_add_attribute(lang_constructors_statement_enum);
516 }
517 | SORT '(' CONSTRUCTORS ')'
518 {
519 constructors_sorted = TRUE;
520 lang_add_attribute (lang_constructors_statement_enum);
521 }
522 | input_section_spec
523 | length '(' mustbe_exp ')'
524 {
525 lang_add_data ((int) $1, $3);
526 }
527
528 | FILL '(' fill_exp ')'
529 {
530 lang_add_fill ($3);
531 }
532 ;
533
534 statement_list:
535 statement_list statement
536 | statement
537 ;
538
539 statement_list_opt:
540 /* empty */
541 | statement_list
542 ;
543
544 length:
545 QUAD
546 { $$ = $1; }
547 | SQUAD
548 { $$ = $1; }
549 | LONG
550 { $$ = $1; }
551 | SHORT
552 { $$ = $1; }
553 | BYTE
554 { $$ = $1; }
555 ;
556
557 fill_exp:
558 mustbe_exp
559 {
560 $$ = exp_get_fill ($1,
561 0,
562 "fill value",
563 lang_first_phase_enum);
564 }
565 ;
566
567 fill_opt:
568 '=' fill_exp
569 { $$ = $2; }
570 | { $$ = (fill_type *) 0; }
571 ;
572
573 assign_op:
574 PLUSEQ
575 { $$ = '+'; }
576 | MINUSEQ
577 { $$ = '-'; }
578 | MULTEQ
579 { $$ = '*'; }
580 | DIVEQ
581 { $$ = '/'; }
582 | LSHIFTEQ
583 { $$ = LSHIFT; }
584 | RSHIFTEQ
585 { $$ = RSHIFT; }
586 | ANDEQ
587 { $$ = '&'; }
588 | OREQ
589 { $$ = '|'; }
590
591 ;
592
593 end: ';' | ','
594 ;
595
596
597 assignment:
598 NAME '=' mustbe_exp
599 {
600 lang_add_assignment (exp_assop ($2, $1, $3));
601 }
602 | NAME assign_op mustbe_exp
603 {
604 lang_add_assignment (exp_assop ('=', $1,
605 exp_binop ($2,
606 exp_nameop (NAME,
607 $1),
608 $3)));
609 }
610 | PROVIDE '(' NAME '=' mustbe_exp ')'
611 {
612 lang_add_assignment (exp_provide ($3, $5));
613 }
614 ;
615
616
617 opt_comma:
618 ',' | ;
619
620
621 memory:
622 MEMORY '{' memory_spec memory_spec_list '}'
623 ;
624
625 memory_spec_list:
626 memory_spec_list memory_spec
627 | memory_spec_list ',' memory_spec
628 |
629 ;
630
631
632 memory_spec: NAME
633 { region = lang_memory_region_lookup ($1, TRUE); }
634 attributes_opt ':'
635 origin_spec opt_comma length_spec
636 {}
637 ;
638
639 origin_spec:
640 ORIGIN '=' mustbe_exp
641 { region->current =
642 region->origin =
643 exp_get_vma($3, 0L,"origin", lang_first_phase_enum);
644 }
645 ;
646
647 length_spec:
648 LENGTH '=' mustbe_exp
649 { region->length = exp_get_vma($3,
650 ~((bfd_vma)0),
651 "length",
652 lang_first_phase_enum);
653 }
654 ;
655
656 attributes_opt:
657 /* empty */
658 { /* dummy action to avoid bison 1.25 error message */ }
659 | '(' attributes_list ')'
660 ;
661
662 attributes_list:
663 attributes_string
664 | attributes_list attributes_string
665 ;
666
667 attributes_string:
668 NAME
669 { lang_set_flags (region, $1, 0); }
670 | '!' NAME
671 { lang_set_flags (region, $2, 1); }
672 ;
673
674 startup:
675 STARTUP '(' filename ')'
676 { lang_startup($3); }
677 ;
678
679 high_level_library:
680 HLL '(' high_level_library_NAME_list ')'
681 | HLL '(' ')'
682 { ldemul_hll((char *)NULL); }
683 ;
684
685 high_level_library_NAME_list:
686 high_level_library_NAME_list opt_comma filename
687 { ldemul_hll($3); }
688 | filename
689 { ldemul_hll($1); }
690
691 ;
692
693 low_level_library:
694 SYSLIB '(' low_level_library_NAME_list ')'
695 ; low_level_library_NAME_list:
696 low_level_library_NAME_list opt_comma filename
697 { ldemul_syslib($3); }
698 |
699 ;
700
701 floating_point_support:
702 FLOAT
703 { lang_float(TRUE); }
704 | NOFLOAT
705 { lang_float(FALSE); }
706 ;
707
708 nocrossref_list:
709 /* empty */
710 {
711 $$ = NULL;
712 }
713 | NAME nocrossref_list
714 {
715 struct lang_nocrossref *n;
716
717 n = (struct lang_nocrossref *) xmalloc (sizeof *n);
718 n->name = $1;
719 n->next = $2;
720 $$ = n;
721 }
722 | NAME ',' nocrossref_list
723 {
724 struct lang_nocrossref *n;
725
726 n = (struct lang_nocrossref *) xmalloc (sizeof *n);
727 n->name = $1;
728 n->next = $3;
729 $$ = n;
730 }
731 ;
732
733 mustbe_exp: { ldlex_expression(); }
734 exp
735 { ldlex_popstate(); $$=$2;}
736 ;
737
738 exp :
739 '-' exp %prec UNARY
740 { $$ = exp_unop('-', $2); }
741 | '(' exp ')'
742 { $$ = $2; }
743 | NEXT '(' exp ')' %prec UNARY
744 { $$ = exp_unop((int) $1,$3); }
745 | '!' exp %prec UNARY
746 { $$ = exp_unop('!', $2); }
747 | '+' exp %prec UNARY
748 { $$ = $2; }
749 | '~' exp %prec UNARY
750 { $$ = exp_unop('~', $2);}
751
752 | exp '*' exp
753 { $$ = exp_binop('*', $1, $3); }
754 | exp '/' exp
755 { $$ = exp_binop('/', $1, $3); }
756 | exp '%' exp
757 { $$ = exp_binop('%', $1, $3); }
758 | exp '+' exp
759 { $$ = exp_binop('+', $1, $3); }
760 | exp '-' exp
761 { $$ = exp_binop('-' , $1, $3); }
762 | exp LSHIFT exp
763 { $$ = exp_binop(LSHIFT , $1, $3); }
764 | exp RSHIFT exp
765 { $$ = exp_binop(RSHIFT , $1, $3); }
766 | exp EQ exp
767 { $$ = exp_binop(EQ , $1, $3); }
768 | exp NE exp
769 { $$ = exp_binop(NE , $1, $3); }
770 | exp LE exp
771 { $$ = exp_binop(LE , $1, $3); }
772 | exp GE exp
773 { $$ = exp_binop(GE , $1, $3); }
774 | exp '<' exp
775 { $$ = exp_binop('<' , $1, $3); }
776 | exp '>' exp
777 { $$ = exp_binop('>' , $1, $3); }
778 | exp '&' exp
779 { $$ = exp_binop('&' , $1, $3); }
780 | exp '^' exp
781 { $$ = exp_binop('^' , $1, $3); }
782 | exp '|' exp
783 { $$ = exp_binop('|' , $1, $3); }
784 | exp '?' exp ':' exp
785 { $$ = exp_trinop('?' , $1, $3, $5); }
786 | exp ANDAND exp
787 { $$ = exp_binop(ANDAND , $1, $3); }
788 | exp OROR exp
789 { $$ = exp_binop(OROR , $1, $3); }
790 | DEFINED '(' NAME ')'
791 { $$ = exp_nameop(DEFINED, $3); }
792 | INT
793 { $$ = exp_bigintop ($1.integer, $1.str); }
794 | SIZEOF_HEADERS
795 { $$ = exp_nameop(SIZEOF_HEADERS,0); }
796
797 | SIZEOF '(' NAME ')'
798 { $$ = exp_nameop(SIZEOF,$3); }
799 | ADDR '(' NAME ')'
800 { $$ = exp_nameop(ADDR,$3); }
801 | LOADADDR '(' NAME ')'
802 { $$ = exp_nameop(LOADADDR,$3); }
803 | ABSOLUTE '(' exp ')'
804 { $$ = exp_unop(ABSOLUTE, $3); }
805 | ALIGN_K '(' exp ')'
806 { $$ = exp_unop(ALIGN_K,$3); }
807 | ALIGN_K '(' exp ',' exp ')'
808 { $$ = exp_binop(ALIGN_K,$3,$5); }
809 | DATA_SEGMENT_ALIGN '(' exp ',' exp ')'
810 { $$ = exp_binop (DATA_SEGMENT_ALIGN, $3, $5); }
811 | DATA_SEGMENT_END '(' exp ')'
812 { $$ = exp_unop(DATA_SEGMENT_END, $3); }
813 | BLOCK '(' exp ')'
814 { $$ = exp_unop(ALIGN_K,$3); }
815 | NAME
816 { $$ = exp_nameop(NAME,$1); }
817 | MAX_K '(' exp ',' exp ')'
818 { $$ = exp_binop (MAX_K, $3, $5 ); }
819 | MIN_K '(' exp ',' exp ')'
820 { $$ = exp_binop (MIN_K, $3, $5 ); }
821 | ASSERT_K '(' exp ',' NAME ')'
822 { $$ = exp_assert ($3, $5); }
823 ;
824
825
826 memspec_at_opt:
827 AT '>' NAME { $$ = $3; }
828 | { $$ = 0; }
829 ;
830
831 opt_at:
832 AT '(' exp ')' { $$ = $3; }
833 | { $$ = 0; }
834 ;
835
836 opt_subalign:
837 SUBALIGN '(' exp ')' { $$ = $3; }
838 | { $$ = 0; }
839 ;
840
841 section: NAME { ldlex_expression(); }
842 opt_exp_with_type
843 opt_at
844 opt_subalign { ldlex_popstate (); ldlex_script (); }
845 '{'
846 {
847 lang_enter_output_section_statement($1, $3,
848 sectype,
849 0, $5, $4);
850 }
851 statement_list_opt
852 '}' { ldlex_popstate (); ldlex_expression (); }
853 memspec_opt memspec_at_opt phdr_opt fill_opt
854 {
855 ldlex_popstate ();
856 lang_leave_output_section_statement ($15, $12, $14, $13);
857 }
858 opt_comma
859 {}
860 | OVERLAY
861 { ldlex_expression (); }
862 opt_exp_without_type opt_nocrossrefs opt_at opt_subalign
863 { ldlex_popstate (); ldlex_script (); }
864 '{'
865 {
866 lang_enter_overlay ($3, $6);
867 }
868 overlay_section
869 '}'
870 { ldlex_popstate (); ldlex_expression (); }
871 memspec_opt memspec_at_opt phdr_opt fill_opt
872 {
873 ldlex_popstate ();
874 lang_leave_overlay ($5, (int) $4,
875 $16, $13, $15, $14);
876 }
877 opt_comma
878 | /* The GROUP case is just enough to support the gcc
879 svr3.ifile script. It is not intended to be full
880 support. I'm not even sure what GROUP is supposed
881 to mean. */
882 GROUP { ldlex_expression (); }
883 opt_exp_with_type
884 {
885 ldlex_popstate ();
886 lang_add_assignment (exp_assop ('=', ".", $3));
887 }
888 '{' sec_or_group_p1 '}'
889 ;
890
891 type:
892 NOLOAD { sectype = noload_section; }
893 | DSECT { sectype = dsect_section; }
894 | COPY { sectype = copy_section; }
895 | INFO { sectype = info_section; }
896 | OVERLAY { sectype = overlay_section; }
897 ;
898
899 atype:
900 '(' type ')'
901 | /* EMPTY */ { sectype = normal_section; }
902 | '(' ')' { sectype = normal_section; }
903 ;
904
905 opt_exp_with_type:
906 exp atype ':' { $$ = $1; }
907 | atype ':' { $$ = (etree_type *)NULL; }
908 | /* The BIND cases are to support the gcc svr3.ifile
909 script. They aren't intended to implement full
910 support for the BIND keyword. I'm not even sure
911 what BIND is supposed to mean. */
912 BIND '(' exp ')' atype ':' { $$ = $3; }
913 | BIND '(' exp ')' BLOCK '(' exp ')' atype ':'
914 { $$ = $3; }
915 ;
916
917 opt_exp_without_type:
918 exp ':' { $$ = $1; }
919 | ':' { $$ = (etree_type *) NULL; }
920 ;
921
922 opt_nocrossrefs:
923 /* empty */
924 { $$ = 0; }
925 | NOCROSSREFS
926 { $$ = 1; }
927 ;
928
929 memspec_opt:
930 '>' NAME
931 { $$ = $2; }
932 | { $$ = DEFAULT_MEMORY_REGION; }
933 ;
934
935 phdr_opt:
936 /* empty */
937 {
938 $$ = NULL;
939 }
940 | phdr_opt ':' NAME
941 {
942 struct lang_output_section_phdr_list *n;
943
944 n = ((struct lang_output_section_phdr_list *)
945 xmalloc (sizeof *n));
946 n->name = $3;
947 n->used = FALSE;
948 n->next = $1;
949 $$ = n;
950 }
951 ;
952
953 overlay_section:
954 /* empty */
955 | overlay_section
956 NAME
957 {
958 ldlex_script ();
959 lang_enter_overlay_section ($2);
960 }
961 '{' statement_list_opt '}'
962 { ldlex_popstate (); ldlex_expression (); }
963 phdr_opt fill_opt
964 {
965 ldlex_popstate ();
966 lang_leave_overlay_section ($9, $8);
967 }
968 opt_comma
969 ;
970
971 phdrs:
972 PHDRS '{' phdr_list '}'
973 ;
974
975 phdr_list:
976 /* empty */
977 | phdr_list phdr
978 ;
979
980 phdr:
981 NAME { ldlex_expression (); }
982 phdr_type phdr_qualifiers { ldlex_popstate (); }
983 ';'
984 {
985 lang_new_phdr ($1, $3, $4.filehdr, $4.phdrs, $4.at,
986 $4.flags);
987 }
988 ;
989
990 phdr_type:
991 exp
992 {
993 $$ = $1;
994
995 if ($1->type.node_class == etree_name
996 && $1->type.node_code == NAME)
997 {
998 const char *s;
999 unsigned int i;
1000 static const char * const phdr_types[] =
1001 {
1002 "PT_NULL", "PT_LOAD", "PT_DYNAMIC",
1003 "PT_INTERP", "PT_NOTE", "PT_SHLIB",
1004 "PT_PHDR", "PT_TLS"
1005 };
1006
1007 s = $1->name.name;
1008 for (i = 0;
1009 i < sizeof phdr_types / sizeof phdr_types[0];
1010 i++)
1011 if (strcmp (s, phdr_types[i]) == 0)
1012 {
1013 $$ = exp_intop (i);
1014 break;
1015 }
1016 if (i == sizeof phdr_types / sizeof phdr_types[0])
1017 {
1018 if (strcmp (s, "PT_GNU_EH_FRAME") == 0)
1019 $$ = exp_intop (0x6474e550);
1020 else if (strcmp (s, "PT_GNU_STACK") == 0)
1021 $$ = exp_intop (0x6474e551);
1022 else
1023 {
1024 einfo (_("\
1025 %X%P:%S: unknown phdr type `%s' (try integer literal)\n"),
1026 s);
1027 $$ = exp_intop (0);
1028 }
1029 }
1030 }
1031 }
1032 ;
1033
1034 phdr_qualifiers:
1035 /* empty */
1036 {
1037 memset (&$$, 0, sizeof (struct phdr_info));
1038 }
1039 | NAME phdr_val phdr_qualifiers
1040 {
1041 $$ = $3;
1042 if (strcmp ($1, "FILEHDR") == 0 && $2 == NULL)
1043 $$.filehdr = TRUE;
1044 else if (strcmp ($1, "PHDRS") == 0 && $2 == NULL)
1045 $$.phdrs = TRUE;
1046 else if (strcmp ($1, "FLAGS") == 0 && $2 != NULL)
1047 $$.flags = $2;
1048 else
1049 einfo (_("%X%P:%S: PHDRS syntax error at `%s'\n"), $1);
1050 }
1051 | AT '(' exp ')' phdr_qualifiers
1052 {
1053 $$ = $5;
1054 $$.at = $3;
1055 }
1056 ;
1057
1058 phdr_val:
1059 /* empty */
1060 {
1061 $$ = NULL;
1062 }
1063 | '(' exp ')'
1064 {
1065 $$ = $2;
1066 }
1067 ;
1068
1069 /* This syntax is used within an external version script file. */
1070
1071 version_script_file:
1072 {
1073 ldlex_version_file ();
1074 PUSH_ERROR (_("VERSION script"));
1075 }
1076 vers_nodes
1077 {
1078 ldlex_popstate ();
1079 POP_ERROR ();
1080 }
1081 ;
1082
1083 /* This is used within a normal linker script file. */
1084
1085 version:
1086 {
1087 ldlex_version_script ();
1088 }
1089 VERSIONK '{' vers_nodes '}'
1090 {
1091 ldlex_popstate ();
1092 }
1093 ;
1094
1095 vers_nodes:
1096 vers_node
1097 | vers_nodes vers_node
1098 ;
1099
1100 vers_node:
1101 '{' vers_tag '}' ';'
1102 {
1103 lang_register_vers_node (NULL, $2, NULL);
1104 }
1105 | VERS_TAG '{' vers_tag '}' ';'
1106 {
1107 lang_register_vers_node ($1, $3, NULL);
1108 }
1109 | VERS_TAG '{' vers_tag '}' verdep ';'
1110 {
1111 lang_register_vers_node ($1, $3, $5);
1112 }
1113 ;
1114
1115 verdep:
1116 VERS_TAG
1117 {
1118 $$ = lang_add_vers_depend (NULL, $1);
1119 }
1120 | verdep VERS_TAG
1121 {
1122 $$ = lang_add_vers_depend ($1, $2);
1123 }
1124 ;
1125
1126 vers_tag:
1127 /* empty */
1128 {
1129 $$ = lang_new_vers_node (NULL, NULL);
1130 }
1131 | vers_defns ';'
1132 {
1133 $$ = lang_new_vers_node ($1, NULL);
1134 }
1135 | GLOBAL ':' vers_defns ';'
1136 {
1137 $$ = lang_new_vers_node ($3, NULL);
1138 }
1139 | LOCAL ':' vers_defns ';'
1140 {
1141 $$ = lang_new_vers_node (NULL, $3);
1142 }
1143 | GLOBAL ':' vers_defns ';' LOCAL ':' vers_defns ';'
1144 {
1145 $$ = lang_new_vers_node ($3, $7);
1146 }
1147 ;
1148
1149 vers_defns:
1150 VERS_IDENTIFIER
1151 {
1152 $$ = lang_new_vers_pattern (NULL, $1, ldgram_vers_current_lang);
1153 }
1154 | vers_defns ';' VERS_IDENTIFIER
1155 {
1156 $$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang);
1157 }
1158 | vers_defns ';' EXTERN NAME '{'
1159 {
1160 $<name>$ = ldgram_vers_current_lang;
1161 ldgram_vers_current_lang = $4;
1162 }
1163 vers_defns opt_semicolon '}'
1164 {
1165 $$ = $7;
1166 ldgram_vers_current_lang = $<name>6;
1167 }
1168 | EXTERN NAME '{'
1169 {
1170 $<name>$ = ldgram_vers_current_lang;
1171 ldgram_vers_current_lang = $2;
1172 }
1173 vers_defns opt_semicolon '}'
1174 {
1175 $$ = $5;
1176 ldgram_vers_current_lang = $<name>4;
1177 }
1178 ;
1179
1180 opt_semicolon:
1181 /* empty */
1182 | ';'
1183 ;
1184
1185 %%
1186 void
1187 yyerror(arg)
1188 const char *arg;
1189 {
1190 if (ldfile_assumed_script)
1191 einfo (_("%P:%s: file format not recognized; treating as linker script\n"),
1192 ldfile_input_filename);
1193 if (error_index > 0 && error_index < ERROR_NAME_MAX)
1194 einfo ("%P%F:%S: %s in %s\n", arg, error_names[error_index-1]);
1195 else
1196 einfo ("%P%F:%S: %s\n", arg);
1197 }
my patches to zpugcc