Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
18625d54 | 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GLD, the Gnu Linker. | |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libiberty.h" | |
25 | #include "obstack.h" | |
26 | #include "bfdlink.h" | |
27 | ||
28 | #include "ld.h" | |
29 | #include "ldmain.h" | |
30 | #include "ldgram.h" | |
31 | #include "ldexp.h" | |
32 | #include "ldlang.h" | |
252b5132 RH |
33 | #include "ldlex.h" |
34 | #include "ldmisc.h" | |
35 | #include "ldctor.h" | |
36 | #include "ldfile.h" | |
b71e2778 | 37 | #include "ldemul.h" |
252b5132 RH |
38 | #include "fnmatch.h" |
39 | #include "demangle.h" | |
40 | ||
41 | #include <ctype.h> | |
42 | ||
43 | /* FORWARDS */ | |
44 | static lang_statement_union_type *new_statement PARAMS ((enum statement_enum, | |
45 | size_t, | |
46 | lang_statement_list_type*)); | |
47 | ||
48 | ||
49 | /* LOCALS */ | |
50 | static struct obstack stat_obstack; | |
51 | ||
52 | #define obstack_chunk_alloc xmalloc | |
53 | #define obstack_chunk_free free | |
54 | static CONST char *startup_file; | |
55 | static lang_statement_list_type input_file_chain; | |
56 | static boolean placed_commons = false; | |
57 | static lang_output_section_statement_type *default_common_section; | |
58 | static boolean map_option_f; | |
59 | static bfd_vma print_dot; | |
60 | static lang_input_statement_type *first_file; | |
252b5132 RH |
61 | static CONST char *current_target; |
62 | static CONST char *output_target; | |
63 | static lang_statement_list_type statement_list; | |
64 | static struct lang_phdr *lang_phdr_list; | |
65 | ||
66 | static void lang_for_each_statement_worker | |
67 | PARAMS ((void (*func) (lang_statement_union_type *), | |
68 | lang_statement_union_type *s)); | |
69 | static lang_input_statement_type *new_afile | |
70 | PARAMS ((const char *name, lang_input_file_enum_type file_type, | |
71 | const char *target, boolean add_to_list)); | |
72 | static void init_os PARAMS ((lang_output_section_statement_type *s)); | |
73 | static void exp_init_os PARAMS ((etree_type *)); | |
74 | static void section_already_linked PARAMS ((bfd *, asection *, PTR)); | |
9503fd87 ILT |
75 | static struct bfd_hash_entry *already_linked_newfunc |
76 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, | |
77 | const char *string)); | |
78 | static void already_linked_table_init PARAMS ((void)); | |
79 | static void already_linked_table_free PARAMS ((void)); | |
252b5132 RH |
80 | static boolean wildcardp PARAMS ((const char *)); |
81 | static lang_statement_union_type *wild_sort | |
82 | PARAMS ((lang_wild_statement_type *, lang_input_statement_type *, | |
83 | asection *)); | |
252b5132 RH |
84 | static lang_input_statement_type *lookup_name PARAMS ((const char *name)); |
85 | static void load_symbols PARAMS ((lang_input_statement_type *entry, | |
86 | lang_statement_list_type *)); | |
252b5132 RH |
87 | static void wild PARAMS ((lang_wild_statement_type *s, |
88 | const char *section, const char *file, | |
89 | const char *target, | |
90 | lang_output_section_statement_type *output)); | |
91 | static bfd *open_output PARAMS ((const char *name)); | |
92 | static void ldlang_open_output PARAMS ((lang_statement_union_type *statement)); | |
93 | static void open_input_bfds | |
94 | PARAMS ((lang_statement_union_type *statement, boolean)); | |
95 | static void lang_reasonable_defaults PARAMS ((void)); | |
96 | static void lang_place_undefineds PARAMS ((void)); | |
97 | static void map_input_to_output_sections | |
98 | PARAMS ((lang_statement_union_type *s, | |
99 | const char *target, | |
100 | lang_output_section_statement_type *output_section_statement)); | |
101 | static void print_output_section_statement | |
102 | PARAMS ((lang_output_section_statement_type *output_section_statement)); | |
103 | static void print_assignment | |
104 | PARAMS ((lang_assignment_statement_type *assignment, | |
105 | lang_output_section_statement_type *output_section)); | |
106 | static void print_input_statement PARAMS ((lang_input_statement_type *statm)); | |
107 | static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR)); | |
108 | static void print_input_section PARAMS ((lang_input_section_type *in)); | |
109 | static void print_fill_statement PARAMS ((lang_fill_statement_type *fill)); | |
110 | static void print_data_statement PARAMS ((lang_data_statement_type *data)); | |
111 | static void print_address_statement PARAMS ((lang_address_statement_type *)); | |
112 | static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc)); | |
113 | static void print_padding_statement PARAMS ((lang_padding_statement_type *s)); | |
114 | static void print_wild_statement | |
115 | PARAMS ((lang_wild_statement_type *w, | |
116 | lang_output_section_statement_type *os)); | |
117 | static void print_group | |
118 | PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *)); | |
119 | static void print_statement PARAMS ((lang_statement_union_type *s, | |
120 | lang_output_section_statement_type *os)); | |
121 | static void print_statement_list PARAMS ((lang_statement_union_type *s, | |
122 | lang_output_section_statement_type *os)); | |
123 | static void print_statements PARAMS ((void)); | |
124 | static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr, | |
125 | fill_type fill, unsigned int power, | |
126 | asection *output_section_statement, | |
127 | bfd_vma dot)); | |
128 | static bfd_vma size_input_section | |
129 | PARAMS ((lang_statement_union_type **this_ptr, | |
130 | lang_output_section_statement_type *output_section_statement, | |
131 | fill_type fill, bfd_vma dot, boolean relax)); | |
132 | static void lang_finish PARAMS ((void)); | |
133 | static void ignore_bfd_errors PARAMS ((const char *, ...)); | |
134 | static void lang_check PARAMS ((void)); | |
135 | static void lang_common PARAMS ((void)); | |
136 | static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR)); | |
137 | static void lang_place_orphans PARAMS ((void)); | |
138 | static int topower PARAMS ((int)); | |
139 | static void lang_set_startof PARAMS ((void)); | |
140 | static void reset_memory_regions PARAMS ((void)); | |
141 | static void lang_record_phdrs PARAMS ((void)); | |
252b5132 RH |
142 | static void lang_gc_wild |
143 | PARAMS ((lang_wild_statement_type *, const char *, const char *)); | |
144 | static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *)); | |
145 | static void lang_gc_sections PARAMS ((void)); | |
146 | static void lang_do_version_exports_section PARAMS ((void)); | |
147 | static void lang_check_section_addresses PARAMS ((void)); | |
252b5132 | 148 | |
4dec4d4e RH |
149 | typedef void (*callback_t) PARAMS ((lang_wild_statement_type *, |
150 | asection *, lang_input_statement_type *, | |
151 | void *)); | |
152 | static void walk_wild_section | |
153 | PARAMS ((lang_wild_statement_type *, const char *, | |
154 | lang_input_statement_type *, callback_t, void *)); | |
155 | static void walk_wild_file | |
156 | PARAMS ((lang_wild_statement_type *, const char *, | |
157 | lang_input_statement_type *, callback_t, void *)); | |
e50d8076 NC |
158 | |
159 | static int get_target PARAMS ((const bfd_target *, void *)); | |
160 | static void stricpy PARAMS ((char *, char *)); | |
161 | static void strcut PARAMS ((char *, char *)); | |
162 | static int name_compare PARAMS ((char *, char *)); | |
163 | static int closest_target_match PARAMS ((const bfd_target *, void *)); | |
164 | static char * get_first_input_target PARAMS ((void)); | |
4dec4d4e | 165 | |
252b5132 RH |
166 | /* EXPORTS */ |
167 | lang_output_section_statement_type *abs_output_section; | |
aea4bd9d | 168 | lang_statement_list_type lang_output_section_statement; |
252b5132 | 169 | lang_statement_list_type *stat_ptr = &statement_list; |
87f2a346 | 170 | lang_statement_list_type file_chain = { NULL, NULL }; |
252b5132 RH |
171 | const char *entry_symbol = NULL; |
172 | boolean entry_from_cmdline; | |
173 | boolean lang_has_input_file = false; | |
174 | boolean had_output_filename = false; | |
175 | boolean lang_float_flag = false; | |
176 | boolean delete_output_file_on_failure = false; | |
177 | struct lang_nocrossrefs *nocrossref_list; | |
178 | ||
179 | etree_type *base; /* Relocation base - or null */ | |
180 | ||
181 | ||
182 | #if defined(__STDC__) || defined(ALMOST_STDC) | |
183 | #define cat(a,b) a##b | |
184 | #else | |
185 | #define cat(a,b) a/**/b | |
186 | #endif | |
187 | ||
188 | #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y) | |
189 | ||
190 | #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma) | |
191 | ||
192 | #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section)) | |
193 | ||
194 | #define SECTION_NAME_MAP_LENGTH (16) | |
195 | ||
196 | PTR | |
197 | stat_alloc (size) | |
198 | size_t size; | |
199 | { | |
200 | return obstack_alloc (&stat_obstack, size); | |
201 | } | |
202 | ||
4dec4d4e RH |
203 | /*---------------------------------------------------------------------- |
204 | Generic traversal routines for finding matching sections. | |
205 | */ | |
206 | ||
207 | static void | |
208 | walk_wild_section (ptr, section, file, callback, data) | |
209 | lang_wild_statement_type *ptr; | |
210 | const char *section; | |
211 | lang_input_statement_type *file; | |
212 | callback_t callback; | |
213 | void *data; | |
214 | { | |
215 | /* Don't process sections from files which were excluded. */ | |
18625d54 | 216 | if (ptr->exclude_filename_list != NULL) |
4dec4d4e | 217 | { |
18625d54 CM |
218 | struct name_list *list_tmp; |
219 | for (list_tmp = ptr->exclude_filename_list; list_tmp; list_tmp = list_tmp->next) | |
220 | { | |
221 | boolean match; | |
4dec4d4e | 222 | |
18625d54 CM |
223 | if (wildcardp (list_tmp->name)) |
224 | match = fnmatch (list_tmp->name, file->filename, 0) == 0 ? true : false; | |
225 | else | |
226 | match = strcmp (list_tmp->name, file->filename) == 0 ? true : false; | |
4dec4d4e | 227 | |
18625d54 CM |
228 | if (match) |
229 | return; | |
230 | } | |
4dec4d4e RH |
231 | } |
232 | ||
233 | if (file->just_syms_flag == false) | |
234 | { | |
235 | register asection *s; | |
236 | boolean wildcard; | |
237 | ||
238 | if (section == NULL) | |
239 | wildcard = false; | |
240 | else | |
241 | wildcard = wildcardp (section); | |
242 | ||
243 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
244 | { | |
245 | boolean match; | |
246 | ||
247 | if (section == NULL) | |
248 | match = true; | |
249 | else | |
250 | { | |
251 | const char *name; | |
252 | ||
253 | name = bfd_get_section_name (file->the_bfd, s); | |
254 | if (wildcard) | |
255 | match = fnmatch (section, name, 0) == 0 ? true : false; | |
256 | else | |
257 | match = strcmp (section, name) == 0 ? true : false; | |
258 | } | |
259 | ||
260 | if (match) | |
261 | (*callback) (ptr, s, file, data); | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | /* Handle a wild statement for a single file F. */ | |
267 | ||
268 | static void | |
269 | walk_wild_file (s, section, f, callback, data) | |
270 | lang_wild_statement_type *s; | |
271 | const char *section; | |
272 | lang_input_statement_type *f; | |
273 | callback_t callback; | |
274 | void *data; | |
275 | { | |
276 | if (f->the_bfd == NULL | |
277 | || ! bfd_check_format (f->the_bfd, bfd_archive)) | |
278 | walk_wild_section (s, section, f, callback, data); | |
279 | else | |
280 | { | |
281 | bfd *member; | |
282 | ||
283 | /* This is an archive file. We must map each member of the | |
284 | archive separately. */ | |
285 | member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL); | |
286 | while (member != NULL) | |
287 | { | |
288 | /* When lookup_name is called, it will call the add_symbols | |
289 | entry point for the archive. For each element of the | |
290 | archive which is included, BFD will call ldlang_add_file, | |
291 | which will set the usrdata field of the member to the | |
292 | lang_input_statement. */ | |
293 | if (member->usrdata != NULL) | |
294 | { | |
295 | walk_wild_section (s, section, | |
296 | (lang_input_statement_type *) member->usrdata, | |
297 | callback, data); | |
298 | } | |
299 | ||
300 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
301 | } | |
302 | } | |
303 | } | |
304 | ||
305 | static void | |
306 | walk_wild (s, section, file, callback, data) | |
307 | lang_wild_statement_type *s; | |
308 | const char *section; | |
309 | const char *file; | |
310 | callback_t callback; | |
311 | void *data; | |
312 | { | |
4dec4d4e RH |
313 | if (file == (char *) NULL) |
314 | { | |
315 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 316 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e RH |
317 | { |
318 | walk_wild_file (s, section, f, callback, data); | |
319 | } | |
320 | } | |
321 | else if (wildcardp (file)) | |
322 | { | |
e50d8076 | 323 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e RH |
324 | { |
325 | if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0) | |
326 | walk_wild_file (s, section, f, callback, data); | |
327 | } | |
328 | } | |
329 | else | |
330 | { | |
e50d8076 NC |
331 | lang_input_statement_type *f; |
332 | ||
4dec4d4e RH |
333 | /* Perform the iteration over a single file. */ |
334 | f = lookup_name (file); | |
335 | walk_wild_file (s, section, f, callback, data); | |
336 | } | |
337 | } | |
338 | ||
252b5132 RH |
339 | /*---------------------------------------------------------------------- |
340 | lang_for_each_statement walks the parse tree and calls the provided | |
341 | function for each node | |
342 | */ | |
343 | ||
344 | static void | |
345 | lang_for_each_statement_worker (func, s) | |
346 | void (*func) PARAMS ((lang_statement_union_type *)); | |
347 | lang_statement_union_type *s; | |
348 | { | |
349 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
350 | { | |
351 | func (s); | |
352 | ||
353 | switch (s->header.type) | |
354 | { | |
355 | case lang_constructors_statement_enum: | |
356 | lang_for_each_statement_worker (func, constructor_list.head); | |
357 | break; | |
358 | case lang_output_section_statement_enum: | |
359 | lang_for_each_statement_worker | |
360 | (func, | |
361 | s->output_section_statement.children.head); | |
362 | break; | |
363 | case lang_wild_statement_enum: | |
364 | lang_for_each_statement_worker | |
365 | (func, | |
366 | s->wild_statement.children.head); | |
367 | break; | |
368 | case lang_group_statement_enum: | |
369 | lang_for_each_statement_worker (func, | |
370 | s->group_statement.children.head); | |
371 | break; | |
372 | case lang_data_statement_enum: | |
373 | case lang_reloc_statement_enum: | |
374 | case lang_object_symbols_statement_enum: | |
375 | case lang_output_statement_enum: | |
376 | case lang_target_statement_enum: | |
377 | case lang_input_section_enum: | |
378 | case lang_input_statement_enum: | |
379 | case lang_assignment_statement_enum: | |
380 | case lang_padding_statement_enum: | |
381 | case lang_address_statement_enum: | |
382 | case lang_fill_statement_enum: | |
383 | break; | |
384 | default: | |
385 | FAIL (); | |
386 | break; | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | void | |
392 | lang_for_each_statement (func) | |
393 | void (*func) PARAMS ((lang_statement_union_type *)); | |
394 | { | |
395 | lang_for_each_statement_worker (func, | |
396 | statement_list.head); | |
397 | } | |
398 | ||
399 | /*----------------------------------------------------------------------*/ | |
400 | void | |
401 | lang_list_init (list) | |
402 | lang_statement_list_type *list; | |
403 | { | |
404 | list->head = (lang_statement_union_type *) NULL; | |
405 | list->tail = &list->head; | |
406 | } | |
407 | ||
408 | /*---------------------------------------------------------------------- | |
409 | ||
410 | build a new statement node for the parse tree | |
411 | ||
412 | */ | |
413 | ||
414 | static | |
415 | lang_statement_union_type * | |
416 | new_statement (type, size, list) | |
417 | enum statement_enum type; | |
418 | size_t size; | |
419 | lang_statement_list_type * list; | |
420 | { | |
421 | lang_statement_union_type *new = (lang_statement_union_type *) | |
422 | stat_alloc (size); | |
423 | ||
424 | new->header.type = type; | |
425 | new->header.next = (lang_statement_union_type *) NULL; | |
426 | lang_statement_append (list, new, &new->header.next); | |
427 | return new; | |
428 | } | |
429 | ||
430 | /* | |
431 | Build a new input file node for the language. There are several ways | |
432 | in which we treat an input file, eg, we only look at symbols, or | |
433 | prefix it with a -l etc. | |
434 | ||
435 | We can be supplied with requests for input files more than once; | |
436 | they may, for example be split over serveral lines like foo.o(.text) | |
437 | foo.o(.data) etc, so when asked for a file we check that we havn't | |
438 | got it already so we don't duplicate the bfd. | |
439 | ||
440 | */ | |
441 | static lang_input_statement_type * | |
442 | new_afile (name, file_type, target, add_to_list) | |
443 | CONST char *name; | |
444 | lang_input_file_enum_type file_type; | |
445 | CONST char *target; | |
446 | boolean add_to_list; | |
447 | { | |
448 | lang_input_statement_type *p; | |
449 | ||
450 | if (add_to_list) | |
451 | p = new_stat (lang_input_statement, stat_ptr); | |
452 | else | |
453 | { | |
454 | p = ((lang_input_statement_type *) | |
455 | stat_alloc (sizeof (lang_input_statement_type))); | |
456 | p->header.next = NULL; | |
457 | } | |
458 | ||
459 | lang_has_input_file = true; | |
460 | p->target = target; | |
461 | switch (file_type) | |
462 | { | |
463 | case lang_input_file_is_symbols_only_enum: | |
464 | p->filename = name; | |
465 | p->is_archive = false; | |
466 | p->real = true; | |
467 | p->local_sym_name = name; | |
468 | p->just_syms_flag = true; | |
469 | p->search_dirs_flag = false; | |
470 | break; | |
471 | case lang_input_file_is_fake_enum: | |
472 | p->filename = name; | |
473 | p->is_archive = false; | |
474 | p->real = false; | |
475 | p->local_sym_name = name; | |
476 | p->just_syms_flag = false; | |
477 | p->search_dirs_flag = false; | |
478 | break; | |
479 | case lang_input_file_is_l_enum: | |
480 | p->is_archive = true; | |
481 | p->filename = name; | |
482 | p->real = true; | |
483 | p->local_sym_name = concat ("-l", name, (const char *) NULL); | |
484 | p->just_syms_flag = false; | |
485 | p->search_dirs_flag = true; | |
486 | break; | |
487 | case lang_input_file_is_marker_enum: | |
488 | p->filename = name; | |
489 | p->is_archive = false; | |
490 | p->real = false; | |
491 | p->local_sym_name = name; | |
492 | p->just_syms_flag = false; | |
493 | p->search_dirs_flag = true; | |
494 | break; | |
495 | case lang_input_file_is_search_file_enum: | |
496 | p->filename = name; | |
497 | p->is_archive = false; | |
498 | p->real = true; | |
499 | p->local_sym_name = name; | |
500 | p->just_syms_flag = false; | |
501 | p->search_dirs_flag = true; | |
502 | break; | |
503 | case lang_input_file_is_file_enum: | |
504 | p->filename = name; | |
505 | p->is_archive = false; | |
506 | p->real = true; | |
507 | p->local_sym_name = name; | |
508 | p->just_syms_flag = false; | |
509 | p->search_dirs_flag = false; | |
510 | break; | |
511 | default: | |
512 | FAIL (); | |
513 | } | |
514 | p->the_bfd = (bfd *) NULL; | |
515 | p->asymbols = (asymbol **) NULL; | |
516 | p->next_real_file = (lang_statement_union_type *) NULL; | |
517 | p->next = (lang_statement_union_type *) NULL; | |
518 | p->symbol_count = 0; | |
519 | p->dynamic = config.dynamic_link; | |
520 | p->whole_archive = whole_archive; | |
521 | p->loaded = false; | |
522 | lang_statement_append (&input_file_chain, | |
523 | (lang_statement_union_type *) p, | |
524 | &p->next_real_file); | |
525 | return p; | |
526 | } | |
527 | ||
528 | lang_input_statement_type * | |
529 | lang_add_input_file (name, file_type, target) | |
530 | CONST char *name; | |
531 | lang_input_file_enum_type file_type; | |
532 | CONST char *target; | |
533 | { | |
534 | lang_has_input_file = true; | |
535 | return new_afile (name, file_type, target, true); | |
536 | } | |
537 | ||
538 | /* Build enough state so that the parser can build its tree */ | |
539 | void | |
540 | lang_init () | |
541 | { | |
542 | obstack_begin (&stat_obstack, 1000); | |
543 | ||
544 | stat_ptr = &statement_list; | |
545 | ||
546 | lang_list_init (stat_ptr); | |
547 | ||
548 | lang_list_init (&input_file_chain); | |
549 | lang_list_init (&lang_output_section_statement); | |
550 | lang_list_init (&file_chain); | |
551 | first_file = lang_add_input_file ((char *) NULL, | |
552 | lang_input_file_is_marker_enum, | |
553 | (char *) NULL); | |
554 | abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); | |
555 | ||
556 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
557 | ||
558 | } | |
559 | ||
560 | /*---------------------------------------------------------------------- | |
561 | A region is an area of memory declared with the | |
562 | MEMORY { name:org=exp, len=exp ... } | |
563 | syntax. | |
564 | ||
565 | We maintain a list of all the regions here | |
566 | ||
567 | If no regions are specified in the script, then the default is used | |
568 | which is created when looked up to be the entire data space | |
569 | */ | |
570 | ||
571 | static lang_memory_region_type *lang_memory_region_list; | |
572 | static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; | |
573 | ||
574 | lang_memory_region_type * | |
575 | lang_memory_region_lookup (name) | |
576 | CONST char *CONST name; | |
577 | { | |
578 | lang_memory_region_type *p; | |
579 | ||
580 | for (p = lang_memory_region_list; | |
581 | p != (lang_memory_region_type *) NULL; | |
582 | p = p->next) | |
583 | { | |
584 | if (strcmp (p->name, name) == 0) | |
585 | { | |
586 | return p; | |
587 | } | |
588 | } | |
589 | ||
590 | #if 0 | |
591 | /* This code used to always use the first region in the list as the | |
592 | default region. I changed it to instead use a region | |
593 | encompassing all of memory as the default region. This permits | |
594 | NOLOAD sections to work reasonably without requiring a region. | |
595 | People should specify what region they mean, if they really want | |
596 | a region. */ | |
597 | if (strcmp (name, "*default*") == 0) | |
598 | { | |
599 | if (lang_memory_region_list != (lang_memory_region_type *) NULL) | |
600 | { | |
601 | return lang_memory_region_list; | |
602 | } | |
603 | } | |
604 | #endif | |
605 | ||
606 | { | |
607 | lang_memory_region_type *new = | |
608 | (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type)); | |
609 | ||
610 | new->name = buystring (name); | |
611 | new->next = (lang_memory_region_type *) NULL; | |
612 | ||
613 | *lang_memory_region_list_tail = new; | |
614 | lang_memory_region_list_tail = &new->next; | |
615 | new->origin = 0; | |
616 | new->flags = 0; | |
617 | new->not_flags = 0; | |
618 | new->length = ~(bfd_size_type)0; | |
619 | new->current = 0; | |
620 | new->had_full_message = false; | |
621 | ||
622 | return new; | |
623 | } | |
624 | } | |
625 | ||
626 | ||
627 | lang_memory_region_type * | |
628 | lang_memory_default (section) | |
629 | asection *section; | |
630 | { | |
631 | lang_memory_region_type *p; | |
632 | ||
633 | flagword sec_flags = section->flags; | |
634 | ||
635 | /* Override SEC_DATA to mean a writable section. */ | |
636 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
637 | sec_flags |= SEC_DATA; | |
638 | ||
639 | for (p = lang_memory_region_list; | |
640 | p != (lang_memory_region_type *) NULL; | |
641 | p = p->next) | |
642 | { | |
643 | if ((p->flags & sec_flags) != 0 | |
644 | && (p->not_flags & sec_flags) == 0) | |
645 | { | |
646 | return p; | |
647 | } | |
648 | } | |
649 | return lang_memory_region_lookup ("*default*"); | |
650 | } | |
651 | ||
652 | lang_output_section_statement_type * | |
653 | lang_output_section_find (name) | |
654 | CONST char *CONST name; | |
655 | { | |
656 | lang_statement_union_type *u; | |
657 | lang_output_section_statement_type *lookup; | |
658 | ||
659 | for (u = lang_output_section_statement.head; | |
660 | u != (lang_statement_union_type *) NULL; | |
661 | u = lookup->next) | |
662 | { | |
663 | lookup = &u->output_section_statement; | |
664 | if (strcmp (name, lookup->name) == 0) | |
665 | { | |
666 | return lookup; | |
667 | } | |
668 | } | |
669 | return (lang_output_section_statement_type *) NULL; | |
670 | } | |
671 | ||
672 | lang_output_section_statement_type * | |
673 | lang_output_section_statement_lookup (name) | |
674 | CONST char *CONST name; | |
675 | { | |
676 | lang_output_section_statement_type *lookup; | |
677 | ||
678 | lookup = lang_output_section_find (name); | |
679 | if (lookup == (lang_output_section_statement_type *) NULL) | |
680 | { | |
681 | ||
682 | lookup = (lang_output_section_statement_type *) | |
683 | new_stat (lang_output_section_statement, stat_ptr); | |
684 | lookup->region = (lang_memory_region_type *) NULL; | |
562d3460 | 685 | lookup->lma_region = (lang_memory_region_type *) NULL; |
252b5132 RH |
686 | lookup->fill = 0; |
687 | lookup->block_value = 1; | |
688 | lookup->name = name; | |
689 | ||
690 | lookup->next = (lang_statement_union_type *) NULL; | |
691 | lookup->bfd_section = (asection *) NULL; | |
692 | lookup->processed = false; | |
693 | lookup->sectype = normal_section; | |
694 | lookup->addr_tree = (etree_type *) NULL; | |
695 | lang_list_init (&lookup->children); | |
696 | ||
697 | lookup->memspec = (CONST char *) NULL; | |
698 | lookup->flags = 0; | |
699 | lookup->subsection_alignment = -1; | |
700 | lookup->section_alignment = -1; | |
701 | lookup->load_base = (union etree_union *) NULL; | |
702 | lookup->phdrs = NULL; | |
703 | ||
704 | lang_statement_append (&lang_output_section_statement, | |
705 | (lang_statement_union_type *) lookup, | |
706 | &lookup->next); | |
707 | } | |
708 | return lookup; | |
709 | } | |
710 | ||
711 | static void | |
712 | lang_map_flags (flag) | |
713 | flagword flag; | |
714 | { | |
715 | if (flag & SEC_ALLOC) | |
716 | minfo ("a"); | |
717 | ||
718 | if (flag & SEC_CODE) | |
719 | minfo ("x"); | |
720 | ||
721 | if (flag & SEC_READONLY) | |
722 | minfo ("r"); | |
723 | ||
724 | if (flag & SEC_DATA) | |
725 | minfo ("w"); | |
726 | ||
727 | if (flag & SEC_LOAD) | |
728 | minfo ("l"); | |
729 | } | |
730 | ||
731 | void | |
732 | lang_map () | |
733 | { | |
734 | lang_memory_region_type *m; | |
735 | ||
736 | minfo (_("\nMemory Configuration\n\n")); | |
737 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
738 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
739 | ||
740 | for (m = lang_memory_region_list; | |
741 | m != (lang_memory_region_type *) NULL; | |
742 | m = m->next) | |
743 | { | |
744 | char buf[100]; | |
745 | int len; | |
746 | ||
747 | fprintf (config.map_file, "%-16s ", m->name); | |
748 | ||
749 | sprintf_vma (buf, m->origin); | |
750 | minfo ("0x%s ", buf); | |
751 | len = strlen (buf); | |
752 | while (len < 16) | |
753 | { | |
754 | print_space (); | |
755 | ++len; | |
756 | } | |
757 | ||
758 | minfo ("0x%V", m->length); | |
759 | if (m->flags || m->not_flags) | |
760 | { | |
761 | #ifndef BFD64 | |
762 | minfo (" "); | |
763 | #endif | |
764 | if (m->flags) | |
765 | { | |
766 | print_space (); | |
767 | lang_map_flags (m->flags); | |
768 | } | |
769 | ||
770 | if (m->not_flags) | |
771 | { | |
772 | minfo (" !"); | |
773 | lang_map_flags (m->not_flags); | |
774 | } | |
775 | } | |
776 | ||
777 | print_nl (); | |
778 | } | |
779 | ||
780 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
781 | ||
782 | print_statements (); | |
783 | } | |
784 | ||
785 | /* Initialize an output section. */ | |
786 | ||
787 | static void | |
788 | init_os (s) | |
789 | lang_output_section_statement_type *s; | |
790 | { | |
791 | section_userdata_type *new; | |
792 | ||
793 | if (s->bfd_section != NULL) | |
794 | return; | |
795 | ||
796 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) | |
797 | einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME); | |
798 | ||
799 | new = ((section_userdata_type *) | |
800 | stat_alloc (sizeof (section_userdata_type))); | |
801 | ||
802 | s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); | |
803 | if (s->bfd_section == (asection *) NULL) | |
804 | s->bfd_section = bfd_make_section (output_bfd, s->name); | |
805 | if (s->bfd_section == (asection *) NULL) | |
806 | { | |
807 | einfo (_("%P%F: output format %s cannot represent section called %s\n"), | |
808 | output_bfd->xvec->name, s->name); | |
809 | } | |
810 | s->bfd_section->output_section = s->bfd_section; | |
811 | ||
812 | /* We initialize an output sections output offset to minus its own */ | |
813 | /* vma to allow us to output a section through itself */ | |
814 | s->bfd_section->output_offset = 0; | |
815 | get_userdata (s->bfd_section) = (PTR) new; | |
816 | ||
817 | /* If there is a base address, make sure that any sections it might | |
818 | mention are initialized. */ | |
819 | if (s->addr_tree != NULL) | |
820 | exp_init_os (s->addr_tree); | |
821 | } | |
822 | ||
823 | /* Make sure that all output sections mentioned in an expression are | |
824 | initialized. */ | |
825 | ||
826 | static void | |
827 | exp_init_os (exp) | |
828 | etree_type *exp; | |
829 | { | |
830 | switch (exp->type.node_class) | |
831 | { | |
832 | case etree_assign: | |
833 | exp_init_os (exp->assign.src); | |
834 | break; | |
835 | ||
836 | case etree_binary: | |
837 | exp_init_os (exp->binary.lhs); | |
838 | exp_init_os (exp->binary.rhs); | |
839 | break; | |
840 | ||
841 | case etree_trinary: | |
842 | exp_init_os (exp->trinary.cond); | |
843 | exp_init_os (exp->trinary.lhs); | |
844 | exp_init_os (exp->trinary.rhs); | |
845 | break; | |
846 | ||
847 | case etree_unary: | |
848 | exp_init_os (exp->unary.child); | |
849 | break; | |
850 | ||
851 | case etree_name: | |
852 | switch (exp->type.node_code) | |
853 | { | |
854 | case ADDR: | |
855 | case LOADADDR: | |
856 | case SIZEOF: | |
857 | { | |
858 | lang_output_section_statement_type *os; | |
859 | ||
860 | os = lang_output_section_find (exp->name.name); | |
861 | if (os != NULL && os->bfd_section == NULL) | |
862 | init_os (os); | |
863 | } | |
864 | } | |
865 | break; | |
866 | ||
867 | default: | |
868 | break; | |
869 | } | |
870 | } | |
9503fd87 | 871 | \f |
252b5132 | 872 | /* Sections marked with the SEC_LINK_ONCE flag should only be linked |
9503fd87 ILT |
873 | once into the output. This routine checks each section, and |
874 | arrange to discard it if a section of the same name has already | |
bb8fe706 ILT |
875 | been linked. If the section has COMDAT information, then it uses |
876 | that to decide whether the section should be included. This code | |
877 | assumes that all relevant sections have the SEC_LINK_ONCE flag set; | |
9503fd87 ILT |
878 | that is, it does not depend solely upon the section name. |
879 | section_already_linked is called via bfd_map_over_sections. */ | |
880 | ||
881 | /* This is the shape of the elements inside the already_linked hash | |
882 | table. It maps a name onto a list of already_linked elements with | |
883 | the same name. It's possible to get more than one element in a | |
884 | list if the COMDAT sections have different names. */ | |
885 | ||
886 | struct already_linked_hash_entry | |
887 | { | |
888 | struct bfd_hash_entry root; | |
889 | struct already_linked *entry; | |
890 | }; | |
891 | ||
892 | struct already_linked | |
893 | { | |
894 | struct already_linked *next; | |
895 | asection *sec; | |
896 | }; | |
897 | ||
898 | /* The hash table. */ | |
899 | ||
900 | static struct bfd_hash_table already_linked_table; | |
252b5132 RH |
901 | |
902 | /*ARGSUSED*/ | |
903 | static void | |
904 | section_already_linked (abfd, sec, data) | |
905 | bfd *abfd; | |
906 | asection *sec; | |
907 | PTR data; | |
908 | { | |
909 | lang_input_statement_type *entry = (lang_input_statement_type *) data; | |
252b5132 RH |
910 | flagword flags; |
911 | const char *name; | |
9503fd87 ILT |
912 | struct already_linked *l; |
913 | struct already_linked_hash_entry *already_linked_list; | |
252b5132 RH |
914 | |
915 | /* If we are only reading symbols from this object, then we want to | |
916 | discard all sections. */ | |
917 | if (entry->just_syms_flag) | |
918 | { | |
919 | sec->output_section = bfd_abs_section_ptr; | |
920 | sec->output_offset = sec->vma; | |
921 | return; | |
922 | } | |
923 | ||
924 | flags = bfd_get_section_flags (abfd, sec); | |
925 | ||
926 | if ((flags & SEC_LINK_ONCE) == 0) | |
927 | return; | |
928 | ||
e361c369 ILT |
929 | /* FIXME: When doing a relocateable link, we may have trouble |
930 | copying relocations in other sections that refer to local symbols | |
931 | in the section being discarded. Those relocations will have to | |
932 | be converted somehow; as of this writing I'm not sure that any of | |
933 | the backends handle that correctly. | |
934 | ||
935 | It is tempting to instead not discard link once sections when | |
936 | doing a relocateable link (technically, they should be discarded | |
937 | whenever we are building constructors). However, that fails, | |
938 | because the linker winds up combining all the link once sections | |
939 | into a single large link once section, which defeats the purpose | |
940 | of having link once sections in the first place. | |
941 | ||
942 | Also, not merging link once sections in a relocateable link | |
943 | causes trouble for MIPS ELF, which relies in link once semantics | |
944 | to handle the .reginfo section correctly. */ | |
945 | ||
252b5132 RH |
946 | name = bfd_get_section_name (abfd, sec); |
947 | ||
9503fd87 ILT |
948 | already_linked_list = |
949 | ((struct already_linked_hash_entry *) | |
950 | bfd_hash_lookup (&already_linked_table, name, true, false)); | |
951 | ||
952 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
252b5132 | 953 | { |
9503fd87 ILT |
954 | if (sec->comdat == NULL |
955 | || l->sec->comdat == NULL | |
956 | || strcmp (sec->comdat->name, l->sec->comdat->name) == 0) | |
252b5132 RH |
957 | { |
958 | /* The section has already been linked. See if we should | |
959 | issue a warning. */ | |
960 | switch (flags & SEC_LINK_DUPLICATES) | |
961 | { | |
962 | default: | |
963 | abort (); | |
964 | ||
965 | case SEC_LINK_DUPLICATES_DISCARD: | |
966 | break; | |
967 | ||
968 | case SEC_LINK_DUPLICATES_ONE_ONLY: | |
bb8fe706 ILT |
969 | if (sec->comdat == NULL) |
970 | einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"), | |
971 | abfd, name); | |
972 | else | |
973 | einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"), | |
974 | abfd, name, sec->comdat->name); | |
252b5132 RH |
975 | break; |
976 | ||
977 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: | |
978 | /* FIXME: We should really dig out the contents of both | |
979 | sections and memcmp them. The COFF/PE spec says that | |
980 | the Microsoft linker does not implement this | |
981 | correctly, so I'm not going to bother doing it | |
982 | either. */ | |
983 | /* Fall through. */ | |
984 | case SEC_LINK_DUPLICATES_SAME_SIZE: | |
985 | if (bfd_section_size (abfd, sec) | |
986 | != bfd_section_size (l->sec->owner, l->sec)) | |
987 | einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"), | |
988 | abfd, name); | |
989 | break; | |
990 | } | |
991 | ||
992 | /* Set the output_section field so that wild_doit does not | |
bb8fe706 ILT |
993 | create a lang_input_section structure for this section. |
994 | Since there might be a symbol in the section being | |
995 | discarded, we must retain a pointer to the section which | |
996 | we are really going to use. */ | |
252b5132 | 997 | sec->output_section = bfd_abs_section_ptr; |
bb8fe706 ILT |
998 | if (sec->comdat != NULL) |
999 | sec->comdat->sec = l->sec; | |
252b5132 RH |
1000 | |
1001 | return; | |
1002 | } | |
1003 | } | |
1004 | ||
9503fd87 ILT |
1005 | /* This is the first section with this name. Record it. Allocate |
1006 | the memory from the same obstack as the hash table is kept in. */ | |
1007 | ||
1008 | l = ((struct already_linked *) | |
1009 | bfd_hash_allocate (&already_linked_table, sizeof *l)); | |
252b5132 | 1010 | |
252b5132 | 1011 | l->sec = sec; |
9503fd87 ILT |
1012 | l->next = already_linked_list->entry; |
1013 | already_linked_list->entry = l; | |
1014 | } | |
1015 | ||
1016 | /* Support routines for the hash table used by section_already_linked, | |
1017 | initialize the table, fill in an entry and remove the table. */ | |
1018 | ||
1019 | static struct bfd_hash_entry * | |
1020 | already_linked_newfunc (entry, table, string) | |
1021 | struct bfd_hash_entry *entry ATTRIBUTE_UNUSED; | |
1022 | struct bfd_hash_table *table; | |
1023 | const char *string ATTRIBUTE_UNUSED; | |
1024 | { | |
1025 | struct already_linked_hash_entry *ret = | |
1026 | bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry)); | |
1027 | ||
1028 | ret->entry = NULL; | |
1029 | ||
1030 | return (struct bfd_hash_entry *) ret; | |
1031 | } | |
1032 | ||
1033 | static void | |
1034 | already_linked_table_init () | |
1035 | { | |
1036 | if (! bfd_hash_table_init_n (&already_linked_table, | |
1037 | already_linked_newfunc, | |
1038 | 42)) | |
1039 | einfo (_("%P%F: Failed to create hash table\n")); | |
1040 | } | |
1041 | ||
1042 | static void | |
1043 | already_linked_table_free () | |
1044 | { | |
1045 | bfd_hash_table_free (&already_linked_table); | |
252b5132 RH |
1046 | } |
1047 | \f | |
1048 | /* The wild routines. | |
1049 | ||
1050 | These expand statements like *(.text) and foo.o to a list of | |
1051 | explicit actions, like foo.o(.text), bar.o(.text) and | |
1052 | foo.o(.text, .data). */ | |
1053 | ||
1054 | /* Return true if the PATTERN argument is a wildcard pattern. | |
1055 | Although backslashes are treated specially if a pattern contains | |
1056 | wildcards, we do not consider the mere presence of a backslash to | |
1057 | be enough to cause the the pattern to be treated as a wildcard. | |
1058 | That lets us handle DOS filenames more naturally. */ | |
1059 | ||
1060 | static boolean | |
1061 | wildcardp (pattern) | |
1062 | const char *pattern; | |
1063 | { | |
1064 | const char *s; | |
1065 | ||
1066 | for (s = pattern; *s != '\0'; ++s) | |
1067 | if (*s == '?' | |
1068 | || *s == '*' | |
1069 | || *s == '[') | |
1070 | return true; | |
1071 | return false; | |
1072 | } | |
1073 | ||
1074 | /* Add SECTION to the output section OUTPUT. Do this by creating a | |
1075 | lang_input_section statement which is placed at PTR. FILE is the | |
1076 | input file which holds SECTION. */ | |
1077 | ||
1078 | void | |
1079 | wild_doit (ptr, section, output, file) | |
1080 | lang_statement_list_type *ptr; | |
1081 | asection *section; | |
1082 | lang_output_section_statement_type *output; | |
1083 | lang_input_statement_type *file; | |
1084 | { | |
1085 | flagword flags; | |
1086 | boolean discard; | |
1087 | ||
1088 | flags = bfd_get_section_flags (section->owner, section); | |
1089 | ||
1090 | discard = false; | |
1091 | ||
1092 | /* If we are doing a final link, discard sections marked with | |
1093 | SEC_EXCLUDE. */ | |
1094 | if (! link_info.relocateable | |
1095 | && (flags & SEC_EXCLUDE) != 0) | |
1096 | discard = true; | |
1097 | ||
1098 | /* Discard input sections which are assigned to a section named | |
1099 | DISCARD_SECTION_NAME. */ | |
1100 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
1101 | discard = true; | |
1102 | ||
1103 | /* Discard debugging sections if we are stripping debugging | |
1104 | information. */ | |
1105 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
1106 | && (flags & SEC_DEBUGGING) != 0) | |
1107 | discard = true; | |
1108 | ||
1109 | if (discard) | |
1110 | { | |
1111 | if (section->output_section == NULL) | |
1112 | { | |
1113 | /* This prevents future calls from assigning this section. */ | |
1114 | section->output_section = bfd_abs_section_ptr; | |
1115 | } | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | if (section->output_section == NULL) | |
1120 | { | |
1121 | boolean first; | |
1122 | lang_input_section_type *new; | |
1123 | flagword flags; | |
1124 | ||
1125 | if (output->bfd_section == NULL) | |
1126 | { | |
1127 | init_os (output); | |
1128 | first = true; | |
1129 | } | |
1130 | else | |
1131 | first = false; | |
1132 | ||
1133 | /* Add a section reference to the list */ | |
1134 | new = new_stat (lang_input_section, ptr); | |
1135 | ||
1136 | new->section = section; | |
1137 | new->ifile = file; | |
1138 | section->output_section = output->bfd_section; | |
1139 | ||
1140 | flags = section->flags; | |
1141 | ||
1142 | /* We don't copy the SEC_NEVER_LOAD flag from an input section | |
1143 | to an output section, because we want to be able to include a | |
1144 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
1145 | section (I don't know why we want to do this, but we do). | |
1146 | build_link_order in ldwrite.c handles this case by turning | |
1147 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
1148 | ||
1149 | flags &= ~ SEC_NEVER_LOAD; | |
1150 | ||
1151 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've | |
1152 | already been processed. One reason to do this is that on pe | |
1153 | format targets, .text$foo sections go into .text and it's odd | |
1154 | to see .text with SEC_LINK_ONCE set. */ | |
1155 | ||
1156 | if (! link_info.relocateable) | |
1157 | flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); | |
1158 | ||
1159 | /* If this is not the first input section, and the SEC_READONLY | |
1160 | flag is not currently set, then don't set it just because the | |
1161 | input section has it set. */ | |
1162 | ||
1163 | if (! first && (section->output_section->flags & SEC_READONLY) == 0) | |
1164 | flags &= ~ SEC_READONLY; | |
1165 | ||
1166 | section->output_section->flags |= flags; | |
1167 | ||
1168 | /* If SEC_READONLY is not set in the input section, then clear | |
1169 | it from the output section. */ | |
1170 | if ((section->flags & SEC_READONLY) == 0) | |
1171 | section->output_section->flags &= ~SEC_READONLY; | |
1172 | ||
1173 | switch (output->sectype) | |
1174 | { | |
1175 | case normal_section: | |
1176 | break; | |
1177 | case dsect_section: | |
1178 | case copy_section: | |
1179 | case info_section: | |
1180 | case overlay_section: | |
1181 | output->bfd_section->flags &= ~SEC_ALLOC; | |
1182 | break; | |
1183 | case noload_section: | |
1184 | output->bfd_section->flags &= ~SEC_LOAD; | |
1185 | output->bfd_section->flags |= SEC_NEVER_LOAD; | |
1186 | break; | |
1187 | } | |
1188 | ||
667f5177 ILT |
1189 | /* Copy over SEC_SMALL_DATA. */ |
1190 | if (section->flags & SEC_SMALL_DATA) | |
1191 | section->output_section->flags |= SEC_SMALL_DATA; | |
9e41f973 | 1192 | |
252b5132 RH |
1193 | if (section->alignment_power > output->bfd_section->alignment_power) |
1194 | output->bfd_section->alignment_power = section->alignment_power; | |
1195 | ||
1196 | /* If supplied an aligment, then force it. */ | |
1197 | if (output->section_alignment != -1) | |
1198 | output->bfd_section->alignment_power = output->section_alignment; | |
74459f0e TW |
1199 | |
1200 | if (section->flags & SEC_BLOCK) | |
1201 | { | |
1202 | section->output_section->flags |= SEC_BLOCK; | |
1203 | /* FIXME: This value should really be obtained from the bfd... */ | |
1204 | output->block_value = 128; | |
1205 | } | |
252b5132 RH |
1206 | } |
1207 | } | |
1208 | ||
1209 | /* Handle wildcard sorting. This returns the lang_input_section which | |
1210 | should follow the one we are going to create for SECTION and FILE, | |
1211 | based on the sorting requirements of WILD. It returns NULL if the | |
1212 | new section should just go at the end of the current list. */ | |
1213 | ||
1214 | static lang_statement_union_type * | |
1215 | wild_sort (wild, file, section) | |
1216 | lang_wild_statement_type *wild; | |
1217 | lang_input_statement_type *file; | |
1218 | asection *section; | |
1219 | { | |
1220 | const char *section_name; | |
1221 | lang_statement_union_type *l; | |
1222 | ||
1223 | if (! wild->filenames_sorted && ! wild->sections_sorted) | |
1224 | return NULL; | |
1225 | ||
1226 | section_name = bfd_get_section_name (file->the_bfd, section); | |
1227 | for (l = wild->children.head; l != NULL; l = l->next) | |
1228 | { | |
1229 | lang_input_section_type *ls; | |
1230 | ||
1231 | if (l->header.type != lang_input_section_enum) | |
1232 | continue; | |
1233 | ls = &l->input_section; | |
1234 | ||
1235 | /* Sorting by filename takes precedence over sorting by section | |
1236 | name. */ | |
1237 | ||
1238 | if (wild->filenames_sorted) | |
1239 | { | |
1240 | const char *fn, *ln; | |
1241 | boolean fa, la; | |
1242 | int i; | |
1243 | ||
1244 | /* The PE support for the .idata section as generated by | |
1245 | dlltool assumes that files will be sorted by the name of | |
1246 | the archive and then the name of the file within the | |
1247 | archive. */ | |
1248 | ||
1249 | if (file->the_bfd != NULL | |
1250 | && bfd_my_archive (file->the_bfd) != NULL) | |
1251 | { | |
1252 | fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); | |
1253 | fa = true; | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | fn = file->filename; | |
1258 | fa = false; | |
1259 | } | |
1260 | ||
1261 | if (ls->ifile->the_bfd != NULL | |
1262 | && bfd_my_archive (ls->ifile->the_bfd) != NULL) | |
1263 | { | |
1264 | ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd)); | |
1265 | la = true; | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | ln = ls->ifile->filename; | |
1270 | la = false; | |
1271 | } | |
1272 | ||
1273 | i = strcmp (fn, ln); | |
1274 | if (i > 0) | |
1275 | continue; | |
1276 | else if (i < 0) | |
1277 | break; | |
1278 | ||
1279 | if (fa || la) | |
1280 | { | |
1281 | if (fa) | |
1282 | fn = file->filename; | |
1283 | if (la) | |
1284 | ln = ls->ifile->filename; | |
1285 | ||
1286 | i = strcmp (fn, ln); | |
1287 | if (i > 0) | |
1288 | continue; | |
1289 | else if (i < 0) | |
1290 | break; | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | /* Here either the files are not sorted by name, or we are | |
1295 | looking at the sections for this file. */ | |
1296 | ||
1297 | if (wild->sections_sorted) | |
1298 | { | |
1299 | if (strcmp (section_name, | |
1300 | bfd_get_section_name (ls->ifile->the_bfd, | |
1301 | ls->section)) | |
1302 | < 0) | |
1303 | break; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | return l; | |
1308 | } | |
1309 | ||
1310 | /* Expand a wild statement for a particular FILE. SECTION may be | |
1311 | NULL, in which case it is a wild card. */ | |
1312 | ||
1313 | static void | |
4dec4d4e | 1314 | output_section_callback (ptr, section, file, output) |
252b5132 | 1315 | lang_wild_statement_type *ptr; |
4dec4d4e | 1316 | asection *section; |
252b5132 | 1317 | lang_input_statement_type *file; |
4dec4d4e RH |
1318 | void *output; |
1319 | { | |
1320 | lang_statement_union_type *before; | |
1321 | ||
1322 | /* If the wild pattern was marked KEEP, the member sections | |
1323 | should be as well. */ | |
1324 | if (ptr->keep_sections) | |
1325 | section->flags |= SEC_KEEP; | |
1326 | ||
1327 | before = wild_sort (ptr, file, section); | |
1328 | ||
1329 | /* Here BEFORE points to the lang_input_section which | |
1330 | should follow the one we are about to add. If BEFORE | |
1331 | is NULL, then the section should just go at the end | |
1332 | of the current list. */ | |
1333 | ||
1334 | if (before == NULL) | |
1335 | wild_doit (&ptr->children, section, | |
1336 | (lang_output_section_statement_type *) output, | |
1337 | file); | |
1338 | else | |
252b5132 | 1339 | { |
4dec4d4e RH |
1340 | lang_statement_list_type list; |
1341 | lang_statement_union_type **pp; | |
1342 | ||
1343 | lang_list_init (&list); | |
1344 | wild_doit (&list, section, | |
1345 | (lang_output_section_statement_type *) output, | |
1346 | file); | |
1347 | ||
1348 | /* If we are discarding the section, LIST.HEAD will | |
1349 | be NULL. */ | |
1350 | if (list.head != NULL) | |
252b5132 | 1351 | { |
4dec4d4e RH |
1352 | ASSERT (list.head->next == NULL); |
1353 | ||
1354 | for (pp = &ptr->children.head; | |
1355 | *pp != before; | |
1356 | pp = &(*pp)->next) | |
1357 | ASSERT (*pp != NULL); | |
1358 | ||
1359 | list.head->next = *pp; | |
1360 | *pp = list.head; | |
252b5132 RH |
1361 | } |
1362 | } | |
1363 | } | |
1364 | ||
1365 | /* This is passed a file name which must have been seen already and | |
1366 | added to the statement tree. We will see if it has been opened | |
1367 | already and had its symbols read. If not then we'll read it. */ | |
1368 | ||
1369 | static lang_input_statement_type * | |
1370 | lookup_name (name) | |
1371 | const char *name; | |
1372 | { | |
1373 | lang_input_statement_type *search; | |
1374 | ||
1375 | for (search = (lang_input_statement_type *) input_file_chain.head; | |
1376 | search != (lang_input_statement_type *) NULL; | |
1377 | search = (lang_input_statement_type *) search->next_real_file) | |
1378 | { | |
1379 | if (search->filename == (char *) NULL && name == (char *) NULL) | |
1380 | return search; | |
1381 | if (search->filename != (char *) NULL | |
1382 | && name != (char *) NULL | |
1383 | && strcmp (search->filename, name) == 0) | |
1384 | break; | |
1385 | } | |
1386 | ||
1387 | if (search == (lang_input_statement_type *) NULL) | |
1388 | search = new_afile (name, lang_input_file_is_file_enum, default_target, | |
1389 | false); | |
1390 | ||
1391 | /* If we have already added this file, or this file is not real | |
1392 | (FIXME: can that ever actually happen?) or the name is NULL | |
1393 | (FIXME: can that ever actually happen?) don't add this file. */ | |
1394 | if (search->loaded | |
1395 | || ! search->real | |
1396 | || search->filename == (const char *) NULL) | |
1397 | return search; | |
1398 | ||
1399 | load_symbols (search, (lang_statement_list_type *) NULL); | |
1400 | ||
1401 | return search; | |
1402 | } | |
1403 | ||
1404 | /* Get the symbols for an input file. */ | |
1405 | ||
1406 | static void | |
1407 | load_symbols (entry, place) | |
1408 | lang_input_statement_type *entry; | |
1409 | lang_statement_list_type *place; | |
1410 | { | |
1411 | char **matching; | |
1412 | ||
1413 | if (entry->loaded) | |
1414 | return; | |
1415 | ||
1416 | ldfile_open_file (entry); | |
1417 | ||
1418 | if (! bfd_check_format (entry->the_bfd, bfd_archive) | |
1419 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
1420 | { | |
1421 | bfd_error_type err; | |
1422 | lang_statement_list_type *hold; | |
1423 | ||
1424 | err = bfd_get_error (); | |
1425 | if (err == bfd_error_file_ambiguously_recognized) | |
1426 | { | |
1427 | char **p; | |
1428 | ||
1429 | einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); | |
1430 | einfo (_("%B: matching formats:"), entry->the_bfd); | |
1431 | for (p = matching; *p != NULL; p++) | |
1432 | einfo (" %s", *p); | |
1433 | einfo ("%F\n"); | |
1434 | } | |
1435 | else if (err != bfd_error_file_not_recognized | |
1436 | || place == NULL) | |
1437 | einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); | |
1438 | ||
1439 | bfd_close (entry->the_bfd); | |
1440 | entry->the_bfd = NULL; | |
1441 | ||
1442 | /* See if the emulation has some special knowledge. */ | |
1443 | ||
1444 | if (ldemul_unrecognized_file (entry)) | |
1445 | return; | |
1446 | ||
1447 | /* Try to interpret the file as a linker script. */ | |
1448 | ||
1449 | ldfile_open_command_file (entry->filename); | |
1450 | ||
1451 | hold = stat_ptr; | |
1452 | stat_ptr = place; | |
1453 | ||
1454 | ldfile_assumed_script = true; | |
1455 | parser_input = input_script; | |
1456 | yyparse (); | |
1457 | ldfile_assumed_script = false; | |
1458 | ||
1459 | stat_ptr = hold; | |
1460 | ||
1461 | return; | |
1462 | } | |
1463 | ||
1464 | if (ldemul_recognized_file (entry)) | |
1465 | return; | |
1466 | ||
1467 | /* We don't call ldlang_add_file for an archive. Instead, the | |
1468 | add_symbols entry point will call ldlang_add_file, via the | |
1469 | add_archive_element callback, for each element of the archive | |
1470 | which is used. */ | |
1471 | switch (bfd_get_format (entry->the_bfd)) | |
1472 | { | |
1473 | default: | |
1474 | break; | |
1475 | ||
1476 | case bfd_object: | |
1477 | ldlang_add_file (entry); | |
1478 | if (trace_files || trace_file_tries) | |
1479 | info_msg ("%I\n", entry); | |
1480 | break; | |
1481 | ||
1482 | case bfd_archive: | |
1483 | if (entry->whole_archive) | |
1484 | { | |
1485 | bfd *member = bfd_openr_next_archived_file (entry->the_bfd, | |
1486 | (bfd *) NULL); | |
1487 | while (member != NULL) | |
1488 | { | |
1489 | if (! bfd_check_format (member, bfd_object)) | |
1490 | einfo (_("%F%B: object %B in archive is not object\n"), | |
1491 | entry->the_bfd, member); | |
1492 | if (! ((*link_info.callbacks->add_archive_element) | |
1493 | (&link_info, member, "--whole-archive"))) | |
1494 | abort (); | |
1495 | if (! bfd_link_add_symbols (member, &link_info)) | |
1496 | einfo (_("%F%B: could not read symbols: %E\n"), member); | |
1497 | member = bfd_openr_next_archived_file (entry->the_bfd, | |
1498 | member); | |
1499 | } | |
1500 | ||
1501 | entry->loaded = true; | |
1502 | ||
1503 | return; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | if (! bfd_link_add_symbols (entry->the_bfd, &link_info)) | |
1508 | einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); | |
1509 | ||
1510 | entry->loaded = true; | |
1511 | } | |
1512 | ||
4dec4d4e | 1513 | |
252b5132 RH |
1514 | |
1515 | /* Handle a wild statement. SECTION or FILE or both may be NULL, | |
1516 | indicating that it is a wildcard. Separate lang_input_section | |
1517 | statements are created for each part of the expansion; they are | |
1518 | added after the wild statement S. OUTPUT is the output section. */ | |
1519 | ||
1520 | static void | |
1521 | wild (s, section, file, target, output) | |
1522 | lang_wild_statement_type *s; | |
1523 | const char *section; | |
1524 | const char *file; | |
87f2a346 | 1525 | const char *target ATTRIBUTE_UNUSED; |
252b5132 RH |
1526 | lang_output_section_statement_type *output; |
1527 | { | |
4dec4d4e | 1528 | walk_wild (s, section, file, output_section_callback, (void *) output); |
252b5132 RH |
1529 | |
1530 | if (section != (char *) NULL | |
1531 | && strcmp (section, "COMMON") == 0 | |
1532 | && default_common_section == NULL) | |
1533 | { | |
1534 | /* Remember the section that common is going to in case we later | |
1535 | get something which doesn't know where to put it. */ | |
1536 | default_common_section = output; | |
1537 | } | |
1538 | } | |
1539 | ||
e50d8076 NC |
1540 | /* Return true iff target is the sought target. */ |
1541 | static int | |
1542 | get_target (target, data) | |
1543 | const bfd_target * target; | |
1544 | void * data; | |
1545 | { | |
1546 | const char * sought = (const char *) data; | |
1547 | ||
1548 | return strcmp (target->name, sought) == 0; | |
1549 | } | |
1550 | ||
1551 | /* Like strcpy() but convert to lower case as well. */ | |
1552 | static void | |
1553 | stricpy (dest, src) | |
1554 | char * dest; | |
1555 | char * src; | |
1556 | { | |
1557 | char c; | |
1558 | ||
1559 | while ((c = * src ++) != 0) | |
1560 | { | |
1561 | if (isupper ((unsigned char) c)) | |
1562 | c = tolower (c); | |
1563 | ||
1564 | * dest ++ = c; | |
1565 | } | |
1566 | ||
1567 | * dest = 0; | |
1568 | } | |
1569 | ||
1570 | /* Remove the first occurance of needle (if any) in haystack | |
1571 | from haystack. */ | |
1572 | static void | |
1573 | strcut (haystack, needle) | |
1574 | char * haystack; | |
1575 | char * needle; | |
1576 | { | |
1577 | haystack = strstr (haystack, needle); | |
1578 | ||
1579 | if (haystack) | |
1580 | { | |
1581 | char * src; | |
1582 | ||
1583 | for (src = haystack + strlen (needle); * src;) | |
1584 | * haystack ++ = * src ++; | |
1585 | ||
1586 | * haystack = 0; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | /* Compare two target format name strings. | |
1591 | Return a value indicating how "similar" they are. */ | |
1592 | static int | |
1593 | name_compare (first, second) | |
1594 | char * first; | |
1595 | char * second; | |
1596 | { | |
1597 | char * copy1; | |
1598 | char * copy2; | |
1599 | int result; | |
1600 | ||
1601 | copy1 = xmalloc (strlen (first) + 1); | |
1602 | copy2 = xmalloc (strlen (second) + 1); | |
1603 | ||
1604 | /* Convert the names to lower case. */ | |
1605 | stricpy (copy1, first); | |
1606 | stricpy (copy2, second); | |
1607 | ||
1608 | /* Remove and endian strings from the name. */ | |
1609 | strcut (copy1, "big"); | |
1610 | strcut (copy1, "little"); | |
1611 | strcut (copy2, "big"); | |
1612 | strcut (copy2, "little"); | |
1613 | ||
1614 | /* Return a value based on how many characters match, | |
1615 | starting from the beginning. If both strings are | |
1616 | the same then return 10 * their length. */ | |
1617 | for (result = 0; copy1 [result] == copy2 [result]; result ++) | |
1618 | if (copy1 [result] == 0) | |
1619 | { | |
1620 | result *= 10; | |
1621 | break; | |
1622 | } | |
1623 | ||
1624 | free (copy1); | |
1625 | free (copy2); | |
1626 | ||
1627 | return result; | |
1628 | } | |
1629 | ||
1630 | /* Set by closest_target_match() below. */ | |
1631 | static const bfd_target * winner; | |
1632 | ||
1633 | /* Scan all the valid bfd targets looking for one that has the endianness | |
1634 | requirement that was specified on the command line, and is the nearest | |
1635 | match to the original output target. */ | |
1636 | static int | |
1637 | closest_target_match (target, data) | |
1638 | const bfd_target * target; | |
1639 | void * data; | |
1640 | { | |
1641 | const bfd_target * original = (const bfd_target *) data; | |
1642 | ||
1643 | if (command_line.endian == ENDIAN_BIG && target->byteorder != BFD_ENDIAN_BIG) | |
1644 | return 0; | |
1645 | ||
1646 | if (command_line.endian == ENDIAN_LITTLE && target->byteorder != BFD_ENDIAN_LITTLE) | |
1647 | return 0; | |
1648 | ||
1649 | /* Must be the same flavour. */ | |
1650 | if (target->flavour != original->flavour) | |
1651 | return 0; | |
1652 | ||
1653 | /* If we have not found a potential winner yet, then record this one. */ | |
1654 | if (winner == NULL) | |
1655 | { | |
1656 | winner = target; | |
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | /* Oh dear, we now have two potential candidates for a successful match. | |
1661 | Compare their names and choose the better one. */ | |
1662 | if (name_compare (target->name, original->name) > name_compare (winner->name, original->name)) | |
1663 | winner = target; | |
1664 | ||
1665 | /* Keep on searching until wqe have checked them all. */ | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | /* Return the BFD target format of the first input file. */ | |
1670 | static char * | |
1671 | get_first_input_target () | |
1672 | { | |
1673 | char * target = NULL; | |
1674 | ||
1675 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
1676 | { | |
1677 | if (s->header.type == lang_input_statement_enum | |
1678 | && s->real) | |
1679 | { | |
1680 | ldfile_open_file (s); | |
1681 | ||
1682 | if (s->the_bfd != NULL | |
1683 | && bfd_check_format (s->the_bfd, bfd_object)) | |
1684 | { | |
1685 | target = bfd_get_target (s->the_bfd); | |
1686 | ||
1687 | if (target != NULL) | |
1688 | break; | |
1689 | } | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return target; | |
1694 | } | |
1695 | ||
252b5132 RH |
1696 | /* Open the output file. */ |
1697 | ||
1698 | static bfd * | |
1699 | open_output (name) | |
e50d8076 | 1700 | const char * name; |
252b5132 | 1701 | { |
e50d8076 | 1702 | bfd * output; |
252b5132 | 1703 | |
e50d8076 | 1704 | /* Has the user told us which output format to use ? */ |
252b5132 RH |
1705 | if (output_target == (char *) NULL) |
1706 | { | |
e50d8076 NC |
1707 | /* No - has the current target been set to something other than the default ? */ |
1708 | if (current_target != default_target) | |
252b5132 | 1709 | output_target = current_target; |
e50d8076 NC |
1710 | |
1711 | /* No - can we determine the format of the first input file ? */ | |
1712 | else | |
1713 | { | |
1714 | output_target = get_first_input_target (); | |
1715 | ||
1716 | /* Failed - use the default output target. */ | |
1717 | if (output_target == NULL) | |
1718 | output_target = default_target; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | /* Has the user requested a particular endianness on the command line ? */ | |
1723 | if (command_line.endian != ENDIAN_UNSET) | |
1724 | { | |
1725 | const bfd_target * target; | |
1b69a0bf | 1726 | enum bfd_endian desired_endian; |
e50d8076 NC |
1727 | |
1728 | /* Get the chosen target. */ | |
1729 | target = bfd_search_for_target (get_target, (void *) output_target); | |
1730 | ||
1731 | if (command_line.endian == ENDIAN_BIG) | |
1732 | desired_endian = BFD_ENDIAN_BIG; | |
252b5132 | 1733 | else |
e50d8076 NC |
1734 | desired_endian = BFD_ENDIAN_LITTLE; |
1735 | ||
1736 | /* See if the target has the wrong endianness. This should not happen | |
1737 | if the linker script has provided big and little endian alternatives, | |
1738 | but some scrips don't do this. */ | |
1739 | if (target->byteorder != desired_endian) | |
1740 | { | |
1741 | /* If it does, then see if the target provides | |
1742 | an alternative with the correct endianness. */ | |
1743 | if (target->alternative_target != NULL | |
1744 | && (target->alternative_target->byteorder == desired_endian)) | |
1745 | output_target = target->alternative_target->name; | |
1746 | else | |
1747 | { | |
1748 | /* Try to find a target as similar as possible to the default | |
1749 | target, but which has the desired endian characteristic. */ | |
1750 | (void) bfd_search_for_target (closest_target_match, (void *) target); | |
1751 | ||
1752 | /* Oh dear - we could not find any targets that satisfy our requirements. */ | |
1753 | if (winner == NULL) | |
1754 | einfo (_("%P: warning: could not find any targets that match endianness requirement\n")); | |
1755 | else | |
1756 | output_target = winner->name; | |
1757 | } | |
1758 | } | |
252b5132 | 1759 | } |
e50d8076 | 1760 | |
252b5132 RH |
1761 | output = bfd_openw (name, output_target); |
1762 | ||
1763 | if (output == (bfd *) NULL) | |
1764 | { | |
1765 | if (bfd_get_error () == bfd_error_invalid_target) | |
e50d8076 NC |
1766 | einfo (_("%P%F: target %s not found\n"), output_target); |
1767 | ||
252b5132 RH |
1768 | einfo (_("%P%F: cannot open output file %s: %E\n"), name); |
1769 | } | |
1770 | ||
1771 | delete_output_file_on_failure = true; | |
1772 | ||
1773 | /* output->flags |= D_PAGED;*/ | |
1774 | ||
1775 | if (! bfd_set_format (output, bfd_object)) | |
1776 | einfo (_("%P%F:%s: can not make object file: %E\n"), name); | |
1777 | if (! bfd_set_arch_mach (output, | |
1778 | ldfile_output_architecture, | |
1779 | ldfile_output_machine)) | |
1780 | einfo (_("%P%F:%s: can not set architecture: %E\n"), name); | |
1781 | ||
1782 | link_info.hash = bfd_link_hash_table_create (output); | |
1783 | if (link_info.hash == (struct bfd_link_hash_table *) NULL) | |
1784 | einfo (_("%P%F: can not create link hash table: %E\n")); | |
1785 | ||
1786 | bfd_set_gp_size (output, g_switch_value); | |
1787 | return output; | |
1788 | } | |
1789 | ||
252b5132 RH |
1790 | static void |
1791 | ldlang_open_output (statement) | |
1792 | lang_statement_union_type * statement; | |
1793 | { | |
1794 | switch (statement->header.type) | |
1795 | { | |
1796 | case lang_output_statement_enum: | |
1797 | ASSERT (output_bfd == (bfd *) NULL); | |
1798 | output_bfd = open_output (statement->output_statement.name); | |
1799 | ldemul_set_output_arch (); | |
1800 | if (config.magic_demand_paged && !link_info.relocateable) | |
1801 | output_bfd->flags |= D_PAGED; | |
1802 | else | |
1803 | output_bfd->flags &= ~D_PAGED; | |
1804 | if (config.text_read_only) | |
1805 | output_bfd->flags |= WP_TEXT; | |
1806 | else | |
1807 | output_bfd->flags &= ~WP_TEXT; | |
1808 | if (link_info.traditional_format) | |
1809 | output_bfd->flags |= BFD_TRADITIONAL_FORMAT; | |
1810 | else | |
1811 | output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; | |
1812 | break; | |
1813 | ||
1814 | case lang_target_statement_enum: | |
1815 | current_target = statement->target_statement.target; | |
1816 | break; | |
1817 | default: | |
1818 | break; | |
1819 | } | |
1820 | } | |
1821 | ||
1822 | /* Open all the input files. */ | |
1823 | ||
1824 | static void | |
1825 | open_input_bfds (s, force) | |
1826 | lang_statement_union_type *s; | |
1827 | boolean force; | |
1828 | { | |
1829 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
1830 | { | |
1831 | switch (s->header.type) | |
1832 | { | |
1833 | case lang_constructors_statement_enum: | |
1834 | open_input_bfds (constructor_list.head, force); | |
1835 | break; | |
1836 | case lang_output_section_statement_enum: | |
1837 | open_input_bfds (s->output_section_statement.children.head, force); | |
1838 | break; | |
1839 | case lang_wild_statement_enum: | |
1840 | /* Maybe we should load the file's symbols */ | |
1841 | if (s->wild_statement.filename | |
1842 | && ! wildcardp (s->wild_statement.filename)) | |
1843 | (void) lookup_name (s->wild_statement.filename); | |
1844 | open_input_bfds (s->wild_statement.children.head, force); | |
1845 | break; | |
1846 | case lang_group_statement_enum: | |
1847 | { | |
1848 | struct bfd_link_hash_entry *undefs; | |
1849 | ||
1850 | /* We must continually search the entries in the group | |
1851 | until no new symbols are added to the list of undefined | |
1852 | symbols. */ | |
1853 | ||
1854 | do | |
1855 | { | |
1856 | undefs = link_info.hash->undefs_tail; | |
1857 | open_input_bfds (s->group_statement.children.head, true); | |
1858 | } | |
1859 | while (undefs != link_info.hash->undefs_tail); | |
1860 | } | |
1861 | break; | |
1862 | case lang_target_statement_enum: | |
1863 | current_target = s->target_statement.target; | |
1864 | break; | |
1865 | case lang_input_statement_enum: | |
e50d8076 | 1866 | if (s->input_statement.real) |
252b5132 RH |
1867 | { |
1868 | lang_statement_list_type add; | |
1869 | ||
1870 | s->input_statement.target = current_target; | |
1871 | ||
1872 | /* If we are being called from within a group, and this | |
1873 | is an archive which has already been searched, then | |
cd4c806a L |
1874 | force it to be researched unless the whole archive |
1875 | has been loaded already. */ | |
252b5132 | 1876 | if (force |
cd4c806a | 1877 | && !s->input_statement.whole_archive |
252b5132 RH |
1878 | && s->input_statement.loaded |
1879 | && bfd_check_format (s->input_statement.the_bfd, | |
1880 | bfd_archive)) | |
1881 | s->input_statement.loaded = false; | |
1882 | ||
1883 | lang_list_init (&add); | |
1884 | ||
1885 | load_symbols (&s->input_statement, &add); | |
1886 | ||
1887 | if (add.head != NULL) | |
1888 | { | |
1889 | *add.tail = s->next; | |
1890 | s->next = add.head; | |
1891 | } | |
1892 | } | |
1893 | break; | |
1894 | default: | |
1895 | break; | |
1896 | } | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | /* If there are [COMMONS] statements, put a wild one into the bss section */ | |
1901 | ||
1902 | static void | |
1903 | lang_reasonable_defaults () | |
1904 | { | |
1905 | #if 0 | |
1906 | lang_output_section_statement_lookup (".text"); | |
1907 | lang_output_section_statement_lookup (".data"); | |
1908 | ||
1909 | default_common_section = | |
1910 | lang_output_section_statement_lookup (".bss"); | |
1911 | ||
1912 | ||
1913 | if (placed_commons == false) | |
1914 | { | |
1915 | lang_wild_statement_type *new = | |
1916 | new_stat (lang_wild_statement, | |
1917 | &default_common_section->children); | |
1918 | ||
1919 | new->section_name = "COMMON"; | |
1920 | new->filename = (char *) NULL; | |
1921 | lang_list_init (&new->children); | |
1922 | } | |
1923 | #endif | |
1924 | ||
1925 | } | |
1926 | ||
1927 | /* | |
1928 | Add the supplied name to the symbol table as an undefined reference. | |
1929 | Remove items from the chain as we open input bfds | |
1930 | */ | |
1931 | typedef struct ldlang_undef_chain_list | |
1932 | { | |
1933 | struct ldlang_undef_chain_list *next; | |
1934 | char *name; | |
1935 | } ldlang_undef_chain_list_type; | |
1936 | ||
1937 | static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head; | |
1938 | ||
1939 | void | |
1940 | ldlang_add_undef (name) | |
1941 | CONST char *CONST name; | |
1942 | { | |
1943 | ldlang_undef_chain_list_type *new = | |
1944 | ((ldlang_undef_chain_list_type *) | |
1945 | stat_alloc (sizeof (ldlang_undef_chain_list_type))); | |
1946 | ||
1947 | new->next = ldlang_undef_chain_list_head; | |
1948 | ldlang_undef_chain_list_head = new; | |
1949 | ||
1950 | new->name = buystring (name); | |
1951 | } | |
1952 | ||
1953 | /* Run through the list of undefineds created above and place them | |
1954 | into the linker hash table as undefined symbols belonging to the | |
1955 | script file. | |
1956 | */ | |
1957 | static void | |
1958 | lang_place_undefineds () | |
1959 | { | |
1960 | ldlang_undef_chain_list_type *ptr; | |
1961 | ||
1962 | for (ptr = ldlang_undef_chain_list_head; | |
1963 | ptr != (ldlang_undef_chain_list_type *) NULL; | |
1964 | ptr = ptr->next) | |
1965 | { | |
1966 | struct bfd_link_hash_entry *h; | |
1967 | ||
1968 | h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true); | |
1969 | if (h == (struct bfd_link_hash_entry *) NULL) | |
1970 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1971 | if (h->type == bfd_link_hash_new) | |
1972 | { | |
1973 | h->type = bfd_link_hash_undefined; | |
1974 | h->u.undef.abfd = NULL; | |
1975 | bfd_link_add_undef (link_info.hash, h); | |
1976 | } | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | /* Open input files and attatch to output sections */ | |
1981 | static void | |
1982 | map_input_to_output_sections (s, target, output_section_statement) | |
1983 | lang_statement_union_type * s; | |
1984 | CONST char *target; | |
1985 | lang_output_section_statement_type * output_section_statement; | |
1986 | { | |
1987 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
1988 | { | |
1989 | switch (s->header.type) | |
1990 | { | |
1991 | ||
1992 | ||
1993 | case lang_wild_statement_enum: | |
1994 | wild (&s->wild_statement, s->wild_statement.section_name, | |
1995 | s->wild_statement.filename, target, | |
1996 | output_section_statement); | |
1997 | ||
1998 | break; | |
1999 | case lang_constructors_statement_enum: | |
2000 | map_input_to_output_sections (constructor_list.head, | |
2001 | target, | |
2002 | output_section_statement); | |
2003 | break; | |
2004 | case lang_output_section_statement_enum: | |
2005 | map_input_to_output_sections (s->output_section_statement.children.head, | |
2006 | target, | |
2007 | &s->output_section_statement); | |
2008 | break; | |
2009 | case lang_output_statement_enum: | |
2010 | break; | |
2011 | case lang_target_statement_enum: | |
2012 | target = s->target_statement.target; | |
2013 | break; | |
2014 | case lang_group_statement_enum: | |
2015 | map_input_to_output_sections (s->group_statement.children.head, | |
2016 | target, | |
2017 | output_section_statement); | |
2018 | break; | |
2019 | case lang_fill_statement_enum: | |
2020 | case lang_input_section_enum: | |
2021 | case lang_object_symbols_statement_enum: | |
2022 | case lang_data_statement_enum: | |
2023 | case lang_reloc_statement_enum: | |
2024 | case lang_padding_statement_enum: | |
2025 | case lang_input_statement_enum: | |
2026 | if (output_section_statement != NULL | |
2027 | && output_section_statement->bfd_section == NULL) | |
2028 | init_os (output_section_statement); | |
2029 | break; | |
2030 | case lang_assignment_statement_enum: | |
2031 | if (output_section_statement != NULL | |
2032 | && output_section_statement->bfd_section == NULL) | |
2033 | init_os (output_section_statement); | |
2034 | ||
2035 | /* Make sure that any sections mentioned in the assignment | |
2036 | are initialized. */ | |
2037 | exp_init_os (s->assignment_statement.exp); | |
2038 | break; | |
2039 | case lang_afile_asection_pair_statement_enum: | |
2040 | FAIL (); | |
2041 | break; | |
2042 | case lang_address_statement_enum: | |
2043 | /* Mark the specified section with the supplied address */ | |
2044 | { | |
2045 | lang_output_section_statement_type *os = | |
2046 | lang_output_section_statement_lookup | |
2047 | (s->address_statement.section_name); | |
2048 | ||
2049 | if (os->bfd_section == NULL) | |
2050 | init_os (os); | |
2051 | os->addr_tree = s->address_statement.address; | |
2052 | } | |
2053 | break; | |
2054 | } | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | static void | |
2059 | print_output_section_statement (output_section_statement) | |
2060 | lang_output_section_statement_type * output_section_statement; | |
2061 | { | |
2062 | asection *section = output_section_statement->bfd_section; | |
2063 | int len; | |
2064 | ||
2065 | if (output_section_statement != abs_output_section) | |
2066 | { | |
2067 | minfo ("\n%s", output_section_statement->name); | |
2068 | ||
2069 | if (section != NULL) | |
2070 | { | |
2071 | print_dot = section->vma; | |
2072 | ||
2073 | len = strlen (output_section_statement->name); | |
2074 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2075 | { | |
2076 | print_nl (); | |
2077 | len = 0; | |
2078 | } | |
2079 | while (len < SECTION_NAME_MAP_LENGTH) | |
2080 | { | |
2081 | print_space (); | |
2082 | ++len; | |
2083 | } | |
2084 | ||
2085 | minfo ("0x%V %W", section->vma, section->_raw_size); | |
2086 | ||
2087 | if (output_section_statement->load_base != NULL) | |
2088 | { | |
2089 | bfd_vma addr; | |
2090 | ||
2091 | addr = exp_get_abs_int (output_section_statement->load_base, 0, | |
2092 | "load base", lang_final_phase_enum); | |
2093 | minfo (_(" load address 0x%V"), addr); | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | print_nl (); | |
2098 | } | |
2099 | ||
2100 | print_statement_list (output_section_statement->children.head, | |
2101 | output_section_statement); | |
2102 | } | |
2103 | ||
2104 | static void | |
2105 | print_assignment (assignment, output_section) | |
2106 | lang_assignment_statement_type * assignment; | |
2107 | lang_output_section_statement_type * output_section; | |
2108 | { | |
2109 | int i; | |
2110 | etree_value_type result; | |
2111 | ||
2112 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2113 | print_space (); | |
2114 | ||
2115 | result = exp_fold_tree (assignment->exp->assign.src, output_section, | |
2116 | lang_final_phase_enum, print_dot, &print_dot); | |
2117 | if (result.valid_p) | |
2118 | minfo ("0x%V", result.value + result.section->bfd_section->vma); | |
2119 | else | |
2120 | { | |
2121 | minfo ("*undef* "); | |
2122 | #ifdef BFD64 | |
2123 | minfo (" "); | |
2124 | #endif | |
2125 | } | |
2126 | ||
2127 | minfo (" "); | |
2128 | ||
2129 | exp_print_tree (assignment->exp); | |
2130 | ||
2131 | print_nl (); | |
2132 | } | |
2133 | ||
2134 | static void | |
2135 | print_input_statement (statm) | |
2136 | lang_input_statement_type * statm; | |
2137 | { | |
2138 | if (statm->filename != (char *) NULL) | |
2139 | { | |
2140 | fprintf (config.map_file, "LOAD %s\n", statm->filename); | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | /* Print all symbols defined in a particular section. This is called | |
2145 | via bfd_link_hash_traverse. */ | |
2146 | ||
2147 | static boolean | |
2148 | print_one_symbol (hash_entry, ptr) | |
2149 | struct bfd_link_hash_entry *hash_entry; | |
2150 | PTR ptr; | |
2151 | { | |
2152 | asection *sec = (asection *) ptr; | |
2153 | ||
2154 | if ((hash_entry->type == bfd_link_hash_defined | |
2155 | || hash_entry->type == bfd_link_hash_defweak) | |
2156 | && sec == hash_entry->u.def.section) | |
2157 | { | |
2158 | int i; | |
2159 | ||
2160 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2161 | print_space (); | |
2162 | minfo ("0x%V ", | |
2163 | (hash_entry->u.def.value | |
2164 | + hash_entry->u.def.section->output_offset | |
2165 | + hash_entry->u.def.section->output_section->vma)); | |
2166 | ||
2167 | minfo (" %T\n", hash_entry->root.string); | |
2168 | } | |
2169 | ||
2170 | return true; | |
2171 | } | |
2172 | ||
2173 | /* Print information about an input section to the map file. */ | |
2174 | ||
2175 | static void | |
2176 | print_input_section (in) | |
2177 | lang_input_section_type * in; | |
2178 | { | |
2179 | asection *i = in->section; | |
2180 | bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; | |
f6af82bd AM |
2181 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2182 | ldfile_output_machine); | |
252b5132 RH |
2183 | if (size != 0) |
2184 | { | |
2185 | print_space (); | |
2186 | ||
2187 | minfo ("%s", i->name); | |
2188 | ||
2189 | if (i->output_section != NULL) | |
2190 | { | |
2191 | int len; | |
2192 | ||
2193 | len = 1 + strlen (i->name); | |
2194 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2195 | { | |
2196 | print_nl (); | |
2197 | len = 0; | |
2198 | } | |
2199 | while (len < SECTION_NAME_MAP_LENGTH) | |
2200 | { | |
2201 | print_space (); | |
2202 | ++len; | |
2203 | } | |
2204 | ||
2205 | minfo ("0x%V %W %B\n", | |
4cbfc3ac | 2206 | i->output_section->vma + i->output_offset, size / opb, |
252b5132 RH |
2207 | i->owner); |
2208 | ||
2209 | if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size) | |
2210 | { | |
2211 | len = SECTION_NAME_MAP_LENGTH + 3; | |
2212 | #ifdef BFD64 | |
2213 | len += 16; | |
2214 | #else | |
2215 | len += 8; | |
2216 | #endif | |
2217 | while (len > 0) | |
2218 | { | |
2219 | print_space (); | |
2220 | --len; | |
2221 | } | |
2222 | ||
2223 | minfo (_("%W (size before relaxing)\n"), i->_raw_size); | |
2224 | } | |
2225 | ||
2226 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i); | |
2227 | ||
4cbfc3ac | 2228 | print_dot = i->output_section->vma + i->output_offset + size / opb; |
252b5132 RH |
2229 | } |
2230 | } | |
2231 | } | |
2232 | ||
2233 | static void | |
2234 | print_fill_statement (fill) | |
2235 | lang_fill_statement_type * fill; | |
2236 | { | |
2237 | fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill); | |
2238 | } | |
2239 | ||
2240 | static void | |
2241 | print_data_statement (data) | |
2242 | lang_data_statement_type * data; | |
2243 | { | |
2244 | int i; | |
2245 | bfd_vma addr; | |
2246 | bfd_size_type size; | |
2247 | const char *name; | |
f6af82bd AM |
2248 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2249 | ldfile_output_machine); | |
252b5132 RH |
2250 | |
2251 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2252 | print_space (); | |
2253 | ||
2254 | addr = data->output_vma; | |
2255 | if (data->output_section != NULL) | |
2256 | addr += data->output_section->vma; | |
2257 | ||
2258 | switch (data->type) | |
2259 | { | |
2260 | default: | |
2261 | abort (); | |
2262 | case BYTE: | |
2263 | size = BYTE_SIZE; | |
2264 | name = "BYTE"; | |
2265 | break; | |
2266 | case SHORT: | |
2267 | size = SHORT_SIZE; | |
2268 | name = "SHORT"; | |
2269 | break; | |
2270 | case LONG: | |
2271 | size = LONG_SIZE; | |
2272 | name = "LONG"; | |
2273 | break; | |
2274 | case QUAD: | |
2275 | size = QUAD_SIZE; | |
2276 | name = "QUAD"; | |
2277 | break; | |
2278 | case SQUAD: | |
2279 | size = QUAD_SIZE; | |
2280 | name = "SQUAD"; | |
2281 | break; | |
2282 | } | |
2283 | ||
2284 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); | |
2285 | ||
2286 | if (data->exp->type.node_class != etree_value) | |
2287 | { | |
2288 | print_space (); | |
2289 | exp_print_tree (data->exp); | |
2290 | } | |
2291 | ||
2292 | print_nl (); | |
2293 | ||
4cbfc3ac TW |
2294 | print_dot = addr + size / opb; |
2295 | ||
252b5132 RH |
2296 | } |
2297 | ||
2298 | /* Print an address statement. These are generated by options like | |
2299 | -Ttext. */ | |
2300 | ||
2301 | static void | |
2302 | print_address_statement (address) | |
2303 | lang_address_statement_type *address; | |
2304 | { | |
2305 | minfo (_("Address of section %s set to "), address->section_name); | |
2306 | exp_print_tree (address->address); | |
2307 | print_nl (); | |
2308 | } | |
2309 | ||
2310 | /* Print a reloc statement. */ | |
2311 | ||
2312 | static void | |
2313 | print_reloc_statement (reloc) | |
2314 | lang_reloc_statement_type *reloc; | |
2315 | { | |
2316 | int i; | |
2317 | bfd_vma addr; | |
2318 | bfd_size_type size; | |
f6af82bd AM |
2319 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2320 | ldfile_output_machine); | |
252b5132 RH |
2321 | |
2322 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2323 | print_space (); | |
2324 | ||
2325 | addr = reloc->output_vma; | |
2326 | if (reloc->output_section != NULL) | |
2327 | addr += reloc->output_section->vma; | |
2328 | ||
2329 | size = bfd_get_reloc_size (reloc->howto); | |
2330 | ||
2331 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); | |
2332 | ||
2333 | if (reloc->name != NULL) | |
2334 | minfo ("%s+", reloc->name); | |
2335 | else | |
2336 | minfo ("%s+", reloc->section->name); | |
2337 | ||
2338 | exp_print_tree (reloc->addend_exp); | |
2339 | ||
2340 | print_nl (); | |
2341 | ||
4cbfc3ac | 2342 | print_dot = addr + size / opb; |
252b5132 RH |
2343 | } |
2344 | ||
2345 | static void | |
2346 | print_padding_statement (s) | |
2347 | lang_padding_statement_type *s; | |
2348 | { | |
2349 | int len; | |
2350 | bfd_vma addr; | |
f6af82bd AM |
2351 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2352 | ldfile_output_machine); | |
252b5132 RH |
2353 | |
2354 | minfo (" *fill*"); | |
2355 | ||
2356 | len = sizeof " *fill*" - 1; | |
2357 | while (len < SECTION_NAME_MAP_LENGTH) | |
2358 | { | |
2359 | print_space (); | |
2360 | ++len; | |
2361 | } | |
2362 | ||
2363 | addr = s->output_offset; | |
2364 | if (s->output_section != NULL) | |
2365 | addr += s->output_section->vma; | |
2366 | minfo ("0x%V %W", addr, s->size); | |
2367 | ||
2368 | if (s->fill != 0) | |
2369 | minfo (" %u", s->fill); | |
2370 | ||
2371 | print_nl (); | |
2372 | ||
4cbfc3ac | 2373 | print_dot = addr + s->size / opb; |
252b5132 RH |
2374 | } |
2375 | ||
2376 | static void | |
2377 | print_wild_statement (w, os) | |
2378 | lang_wild_statement_type * w; | |
2379 | lang_output_section_statement_type * os; | |
2380 | { | |
2381 | print_space (); | |
2382 | ||
2383 | if (w->filenames_sorted) | |
2384 | minfo ("SORT("); | |
18625d54 CM |
2385 | if (w->exclude_filename_list != NULL) |
2386 | { | |
2387 | name_list *tmp; | |
2388 | minfo ("EXCLUDE_FILE ( %s", w->exclude_filename_list->name); | |
2389 | for (tmp=w->exclude_filename_list->next; tmp; tmp = tmp->next) | |
2390 | minfo (", %s", tmp->name); | |
2391 | minfo (")"); | |
2392 | } | |
2393 | if (w->filename != NULL) | |
252b5132 RH |
2394 | minfo ("%s", w->filename); |
2395 | else | |
2396 | minfo ("*"); | |
2397 | if (w->filenames_sorted) | |
2398 | minfo (")"); | |
2399 | ||
2400 | minfo ("("); | |
2401 | if (w->sections_sorted) | |
2402 | minfo ("SORT("); | |
2403 | if (w->section_name != NULL) | |
2404 | minfo ("%s", w->section_name); | |
2405 | else | |
2406 | minfo ("*"); | |
2407 | if (w->sections_sorted) | |
2408 | minfo (")"); | |
2409 | minfo (")"); | |
2410 | ||
2411 | print_nl (); | |
2412 | ||
2413 | print_statement_list (w->children.head, os); | |
2414 | } | |
2415 | ||
2416 | /* Print a group statement. */ | |
2417 | ||
2418 | static void | |
2419 | print_group (s, os) | |
2420 | lang_group_statement_type *s; | |
2421 | lang_output_section_statement_type *os; | |
2422 | { | |
2423 | fprintf (config.map_file, "START GROUP\n"); | |
2424 | print_statement_list (s->children.head, os); | |
2425 | fprintf (config.map_file, "END GROUP\n"); | |
2426 | } | |
2427 | ||
2428 | /* Print the list of statements in S. | |
2429 | This can be called for any statement type. */ | |
2430 | ||
2431 | static void | |
2432 | print_statement_list (s, os) | |
2433 | lang_statement_union_type *s; | |
2434 | lang_output_section_statement_type *os; | |
2435 | { | |
2436 | while (s != NULL) | |
2437 | { | |
2438 | print_statement (s, os); | |
2439 | s = s->next; | |
2440 | } | |
2441 | } | |
2442 | ||
2443 | /* Print the first statement in statement list S. | |
2444 | This can be called for any statement type. */ | |
2445 | ||
2446 | static void | |
2447 | print_statement (s, os) | |
2448 | lang_statement_union_type *s; | |
2449 | lang_output_section_statement_type *os; | |
2450 | { | |
2451 | switch (s->header.type) | |
2452 | { | |
2453 | default: | |
2454 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
2455 | FAIL (); | |
2456 | break; | |
2457 | case lang_constructors_statement_enum: | |
2458 | if (constructor_list.head != NULL) | |
2459 | { | |
2460 | if (constructors_sorted) | |
2461 | minfo (" SORT (CONSTRUCTORS)\n"); | |
2462 | else | |
2463 | minfo (" CONSTRUCTORS\n"); | |
2464 | print_statement_list (constructor_list.head, os); | |
2465 | } | |
2466 | break; | |
2467 | case lang_wild_statement_enum: | |
2468 | print_wild_statement (&s->wild_statement, os); | |
2469 | break; | |
2470 | case lang_address_statement_enum: | |
2471 | print_address_statement (&s->address_statement); | |
2472 | break; | |
2473 | case lang_object_symbols_statement_enum: | |
2474 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
2475 | break; | |
2476 | case lang_fill_statement_enum: | |
2477 | print_fill_statement (&s->fill_statement); | |
2478 | break; | |
2479 | case lang_data_statement_enum: | |
2480 | print_data_statement (&s->data_statement); | |
2481 | break; | |
2482 | case lang_reloc_statement_enum: | |
2483 | print_reloc_statement (&s->reloc_statement); | |
2484 | break; | |
2485 | case lang_input_section_enum: | |
2486 | print_input_section (&s->input_section); | |
2487 | break; | |
2488 | case lang_padding_statement_enum: | |
2489 | print_padding_statement (&s->padding_statement); | |
2490 | break; | |
2491 | case lang_output_section_statement_enum: | |
2492 | print_output_section_statement (&s->output_section_statement); | |
2493 | break; | |
2494 | case lang_assignment_statement_enum: | |
2495 | print_assignment (&s->assignment_statement, os); | |
2496 | break; | |
2497 | case lang_target_statement_enum: | |
2498 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
2499 | break; | |
2500 | case lang_output_statement_enum: | |
2501 | minfo ("OUTPUT(%s", s->output_statement.name); | |
2502 | if (output_target != NULL) | |
2503 | minfo (" %s", output_target); | |
2504 | minfo (")\n"); | |
2505 | break; | |
2506 | case lang_input_statement_enum: | |
2507 | print_input_statement (&s->input_statement); | |
2508 | break; | |
2509 | case lang_group_statement_enum: | |
2510 | print_group (&s->group_statement, os); | |
2511 | break; | |
2512 | case lang_afile_asection_pair_statement_enum: | |
2513 | FAIL (); | |
2514 | break; | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | static void | |
2519 | print_statements () | |
2520 | { | |
2521 | print_statement_list (statement_list.head, abs_output_section); | |
2522 | } | |
2523 | ||
2524 | /* Print the first N statements in statement list S to STDERR. | |
2525 | If N == 0, nothing is printed. | |
2526 | If N < 0, the entire list is printed. | |
2527 | Intended to be called from GDB. */ | |
2528 | ||
2529 | void | |
2530 | dprint_statement (s, n) | |
2531 | lang_statement_union_type * s; | |
2532 | int n; | |
2533 | { | |
2534 | FILE *map_save = config.map_file; | |
2535 | ||
2536 | config.map_file = stderr; | |
2537 | ||
2538 | if (n < 0) | |
2539 | print_statement_list (s, abs_output_section); | |
2540 | else | |
2541 | { | |
2542 | while (s && --n >= 0) | |
2543 | { | |
2544 | print_statement (s, abs_output_section); | |
2545 | s = s->next; | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | config.map_file = map_save; | |
2550 | } | |
2551 | ||
2552 | static bfd_vma | |
2553 | insert_pad (this_ptr, fill, power, output_section_statement, dot) | |
2554 | lang_statement_union_type ** this_ptr; | |
2555 | fill_type fill; | |
2556 | unsigned int power; | |
2557 | asection * output_section_statement; | |
2558 | bfd_vma dot; | |
2559 | { | |
2560 | /* Align this section first to the | |
2561 | input sections requirement, then | |
2562 | to the output section's requirement. | |
2563 | If this alignment is > than any seen before, | |
2564 | then record it too. Perform the alignment by | |
2565 | inserting a magic 'padding' statement. | |
2566 | */ | |
2567 | ||
f6af82bd AM |
2568 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2569 | ldfile_output_machine); | |
252b5132 RH |
2570 | unsigned int alignment_needed = align_power (dot, power) - dot; |
2571 | ||
2572 | if (alignment_needed != 0) | |
2573 | { | |
2574 | lang_statement_union_type *new = | |
2575 | ((lang_statement_union_type *) | |
2576 | stat_alloc (sizeof (lang_padding_statement_type))); | |
2577 | ||
2578 | /* Link into existing chain */ | |
2579 | new->header.next = *this_ptr; | |
2580 | *this_ptr = new; | |
2581 | new->header.type = lang_padding_statement_enum; | |
2582 | new->padding_statement.output_section = output_section_statement; | |
2583 | new->padding_statement.output_offset = | |
2584 | dot - output_section_statement->vma; | |
2585 | new->padding_statement.fill = fill; | |
4cbfc3ac | 2586 | new->padding_statement.size = alignment_needed * opb; |
252b5132 RH |
2587 | } |
2588 | ||
2589 | ||
2590 | /* Remember the most restrictive alignment */ | |
2591 | if (power > output_section_statement->alignment_power) | |
2592 | { | |
2593 | output_section_statement->alignment_power = power; | |
2594 | } | |
4cbfc3ac | 2595 | output_section_statement->_raw_size += alignment_needed * opb; |
252b5132 | 2596 | |
4cbfc3ac | 2597 | return dot + alignment_needed; |
252b5132 RH |
2598 | } |
2599 | ||
2600 | /* Work out how much this section will move the dot point */ | |
2601 | static bfd_vma | |
2602 | size_input_section (this_ptr, output_section_statement, fill, dot, relax) | |
2603 | lang_statement_union_type ** this_ptr; | |
2604 | lang_output_section_statement_type * output_section_statement; | |
2605 | fill_type fill; | |
2606 | bfd_vma dot; | |
87f2a346 | 2607 | boolean relax ATTRIBUTE_UNUSED; |
252b5132 RH |
2608 | { |
2609 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
2610 | asection *i = is->section; | |
f6af82bd AM |
2611 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2612 | ldfile_output_machine); | |
252b5132 RH |
2613 | |
2614 | if (is->ifile->just_syms_flag == false) | |
2615 | { | |
2616 | if (output_section_statement->subsection_alignment != -1) | |
2617 | i->alignment_power = | |
2618 | output_section_statement->subsection_alignment; | |
2619 | ||
2620 | dot = insert_pad (this_ptr, fill, i->alignment_power, | |
2621 | output_section_statement->bfd_section, dot); | |
2622 | ||
2623 | /* Remember where in the output section this input section goes */ | |
2624 | ||
2625 | i->output_offset = dot - output_section_statement->bfd_section->vma; | |
2626 | ||
2627 | /* Mark how big the output section must be to contain this now | |
2628 | */ | |
2629 | if (i->_cooked_size != 0) | |
4cbfc3ac | 2630 | dot += i->_cooked_size / opb; |
252b5132 | 2631 | else |
4cbfc3ac TW |
2632 | dot += i->_raw_size / opb; |
2633 | output_section_statement->bfd_section->_raw_size = | |
2634 | (dot - output_section_statement->bfd_section->vma) * opb; | |
252b5132 RH |
2635 | } |
2636 | else | |
2637 | { | |
2638 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; | |
2639 | } | |
2640 | ||
2641 | return dot; | |
2642 | } | |
2643 | ||
33275c22 | 2644 | #define IGNORE_SECTION(bfd, s) \ |
50e05050 | 2645 | (((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) != (SEC_ALLOC | SEC_LOAD)) \ |
33275c22 NC |
2646 | || bfd_section_size (bfd, s) == 0) |
2647 | ||
252b5132 RH |
2648 | /* Check to see if any allocated sections overlap with other allocated |
2649 | sections. This can happen when the linker script specifically specifies | |
2650 | the output section addresses of the two sections. */ | |
2651 | static void | |
2652 | lang_check_section_addresses () | |
2653 | { | |
2654 | asection * s; | |
f6af82bd | 2655 | unsigned opb = bfd_octets_per_byte (output_bfd); |
252b5132 RH |
2656 | |
2657 | /* Scan all sections in the output list. */ | |
2658 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
33275c22 NC |
2659 | { |
2660 | asection * os; | |
2661 | ||
2662 | /* Ignore sections which are not loaded or which have no contents. */ | |
2663 | if (IGNORE_SECTION (output_bfd, s)) | |
2664 | continue; | |
2665 | ||
2666 | /* Once we reach section 's' stop our seach. This prevents two | |
2667 | warning messages from being produced, one for 'section A overlaps | |
2668 | section B' and one for 'section B overlaps section A'. */ | |
2669 | for (os = output_bfd->sections; os != s; os = os->next) | |
2670 | { | |
2671 | bfd_vma s_start; | |
2672 | bfd_vma s_end; | |
2673 | bfd_vma os_start; | |
2674 | bfd_vma os_end; | |
2675 | ||
2676 | /* Only consider loadable sections with real contents. */ | |
2677 | if (IGNORE_SECTION (output_bfd, os)) | |
2678 | continue; | |
252b5132 | 2679 | |
33275c22 NC |
2680 | /* We must check the sections' LMA addresses not their |
2681 | VMA addresses because overlay sections can have | |
2682 | overlapping VMAs but they must have distinct LMAs. */ | |
2683 | s_start = bfd_section_lma (output_bfd, s); | |
2684 | os_start = bfd_section_lma (output_bfd, os); | |
9e4ed18c TW |
2685 | s_end = s_start + bfd_section_size (output_bfd, s) / opb - 1; |
2686 | os_end = os_start + bfd_section_size (output_bfd, os) / opb - 1; | |
33275c22 NC |
2687 | |
2688 | /* Look for an overlap. */ | |
2689 | if ((s_end < os_start) || (s_start > os_end)) | |
2690 | continue; | |
2691 | ||
2692 | einfo ( | |
252b5132 | 2693 | _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"), |
33275c22 NC |
2694 | s->name, s_start, s_end, os->name, os_start, os_end); |
2695 | ||
2696 | /* Once we have found one overlap for this section, | |
2697 | stop looking for others. */ | |
2698 | break; | |
2699 | } | |
2700 | } | |
252b5132 RH |
2701 | } |
2702 | ||
2703 | /* This variable indicates whether bfd_relax_section should be called | |
2704 | again. */ | |
2705 | ||
2706 | static boolean relax_again; | |
2707 | ||
562d3460 TW |
2708 | /* Make sure the new address is within the region. We explicitly permit the |
2709 | current address to be at the exact end of the region when the address is | |
2710 | non-zero, in case the region is at the end of addressable memory and the | |
2711 | calculation wraps around. */ | |
2712 | ||
2713 | static void | |
2714 | os_region_check (os, region, tree, base) | |
2715 | lang_output_section_statement_type *os; | |
2716 | struct memory_region_struct *region; | |
2717 | etree_type *tree; | |
2718 | bfd_vma base; | |
2719 | { | |
2720 | if ((region->current < region->origin | |
2721 | || (region->current - region->origin > region->length)) | |
2722 | && ((region->current != region->origin + region->length) | |
2723 | || base == 0)) | |
2724 | { | |
2725 | if (tree != (etree_type *) NULL) | |
2726 | { | |
2727 | einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"), | |
2728 | region->current, | |
2729 | os->bfd_section->owner, | |
2730 | os->bfd_section->name, | |
2731 | region->name); | |
2732 | } | |
2733 | else | |
2734 | { | |
2735 | einfo (_("%X%P: region %s is full (%B section %s)\n"), | |
2736 | region->name, | |
2737 | os->bfd_section->owner, | |
2738 | os->bfd_section->name); | |
2739 | } | |
2740 | /* Reset the region pointer. */ | |
2741 | region->current = region->origin; | |
2742 | } | |
2743 | } | |
2744 | ||
252b5132 RH |
2745 | /* Set the sizes for all the output sections. */ |
2746 | ||
2747 | bfd_vma | |
2748 | lang_size_sections (s, output_section_statement, prev, fill, dot, relax) | |
2749 | lang_statement_union_type * s; | |
2750 | lang_output_section_statement_type * output_section_statement; | |
2751 | lang_statement_union_type ** prev; | |
2752 | fill_type fill; | |
2753 | bfd_vma dot; | |
2754 | boolean relax; | |
2755 | { | |
f6af82bd AM |
2756 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2757 | ldfile_output_machine); | |
4cbfc3ac | 2758 | |
252b5132 RH |
2759 | /* Size up the sections from their constituent parts. */ |
2760 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
2761 | { | |
2762 | switch (s->header.type) | |
2763 | { | |
2764 | case lang_output_section_statement_enum: | |
2765 | { | |
2766 | bfd_vma after; | |
2767 | lang_output_section_statement_type *os = &s->output_section_statement; | |
2768 | ||
2769 | if (os->bfd_section == NULL) | |
2770 | /* This section was never actually created. */ | |
2771 | break; | |
2772 | ||
2773 | /* If this is a COFF shared library section, use the size and | |
2774 | address from the input section. FIXME: This is COFF | |
2775 | specific; it would be cleaner if there were some other way | |
2776 | to do this, but nothing simple comes to mind. */ | |
2777 | if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
2778 | { | |
2779 | asection * input; | |
2780 | ||
2781 | if (os->children.head == NULL | |
2782 | || os->children.head->next != NULL | |
2783 | || os->children.head->header.type != lang_input_section_enum) | |
2784 | einfo (_("%P%X: Internal error on COFF shared library section %s\n"), | |
2785 | os->name); | |
2786 | ||
2787 | input = os->children.head->input_section.section; | |
2788 | bfd_set_section_vma (os->bfd_section->owner, | |
2789 | os->bfd_section, | |
2790 | bfd_section_vma (input->owner, input)); | |
2791 | os->bfd_section->_raw_size = input->_raw_size; | |
2792 | break; | |
2793 | } | |
2794 | ||
2795 | if (bfd_is_abs_section (os->bfd_section)) | |
2796 | { | |
2797 | /* No matter what happens, an abs section starts at zero. */ | |
2798 | ASSERT (os->bfd_section->vma == 0); | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | if (os->addr_tree == (etree_type *) NULL) | |
2803 | { | |
2804 | /* No address specified for this section, get one | |
2805 | from the region specification. */ | |
2806 | if (os->region == (lang_memory_region_type *) NULL | |
2807 | || (((bfd_get_section_flags (output_bfd, os->bfd_section) | |
2808 | & (SEC_ALLOC | SEC_LOAD)) != 0) | |
2809 | && os->region->name[0] == '*' | |
2810 | && strcmp (os->region->name, "*default*") == 0)) | |
2811 | { | |
2812 | os->region = lang_memory_default (os->bfd_section); | |
2813 | } | |
2814 | ||
2815 | /* If a loadable section is using the default memory | |
2816 | region, and some non default memory regions were | |
2817 | defined, issue a warning. */ | |
2818 | if ((bfd_get_section_flags (output_bfd, os->bfd_section) | |
2819 | & (SEC_ALLOC | SEC_LOAD)) != 0 | |
2820 | && ! link_info.relocateable | |
2821 | && strcmp (os->region->name, "*default*") == 0 | |
2822 | && lang_memory_region_list != NULL | |
2823 | && (strcmp (lang_memory_region_list->name, "*default*") != 0 | |
2824 | || lang_memory_region_list->next != NULL)) | |
2825 | einfo (_("%P: warning: no memory region specified for section `%s'\n"), | |
2826 | bfd_get_section_name (output_bfd, os->bfd_section)); | |
2827 | ||
2828 | dot = os->region->current; | |
2829 | ||
2830 | if (os->section_alignment == -1) | |
2831 | { | |
2832 | bfd_vma olddot; | |
2833 | ||
2834 | olddot = dot; | |
2835 | dot = align_power (dot, os->bfd_section->alignment_power); | |
2836 | ||
2837 | if (dot != olddot && config.warn_section_align) | |
2838 | einfo (_("%P: warning: changing start of section %s by %u bytes\n"), | |
2839 | os->name, (unsigned int) (dot - olddot)); | |
2840 | } | |
2841 | } | |
2842 | else | |
2843 | { | |
2844 | etree_value_type r; | |
2845 | ||
2846 | r = exp_fold_tree (os->addr_tree, | |
2847 | abs_output_section, | |
2848 | lang_allocating_phase_enum, | |
2849 | dot, &dot); | |
2850 | if (r.valid_p == false) | |
2851 | { | |
2852 | einfo (_("%F%S: non constant address expression for section %s\n"), | |
2853 | os->name); | |
2854 | } | |
2855 | dot = r.value + r.section->bfd_section->vma; | |
2856 | } | |
2857 | ||
2858 | /* The section starts here. | |
2859 | First, align to what the section needs. */ | |
2860 | ||
2861 | if (os->section_alignment != -1) | |
2862 | dot = align_power (dot, os->section_alignment); | |
2863 | ||
2864 | bfd_set_section_vma (0, os->bfd_section, dot); | |
2865 | ||
2866 | os->bfd_section->output_offset = 0; | |
2867 | } | |
2868 | ||
2869 | (void) lang_size_sections (os->children.head, os, &os->children.head, | |
2870 | os->fill, dot, relax); | |
2871 | ||
4cbfc3ac TW |
2872 | /* put the section within the requested block size, or align at |
2873 | the block boundary */ | |
32edc927 TW |
2874 | after = ALIGN_N (os->bfd_section->vma |
2875 | + os->bfd_section->_raw_size / opb, | |
252b5132 RH |
2876 | /* The coercion here is important, see ld.h. */ |
2877 | (bfd_vma) os->block_value); | |
2878 | ||
2879 | if (bfd_is_abs_section (os->bfd_section)) | |
2880 | ASSERT (after == os->bfd_section->vma); | |
2881 | else | |
4cbfc3ac TW |
2882 | os->bfd_section->_raw_size = |
2883 | (after - os->bfd_section->vma) * opb; | |
2884 | dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb; | |
252b5132 RH |
2885 | os->processed = true; |
2886 | ||
2887 | /* Update dot in the region ? | |
2888 | We only do this if the section is going to be allocated, | |
2889 | since unallocated sections do not contribute to the region's | |
13392b77 | 2890 | overall size in memory. |
cce4c4c5 NC |
2891 | |
2892 | If the SEC_NEVER_LOAD bit is not set, it will affect the | |
2893 | addresses of sections after it. We have to update | |
2894 | dot. */ | |
252b5132 | 2895 | if (os->region != (lang_memory_region_type *) NULL |
cce4c4c5 NC |
2896 | && ((bfd_get_section_flags (output_bfd, os->bfd_section) |
2897 | & SEC_NEVER_LOAD) == 0 | |
2898 | || (bfd_get_section_flags (output_bfd, os->bfd_section) | |
2899 | & (SEC_ALLOC | SEC_LOAD)))) | |
252b5132 RH |
2900 | { |
2901 | os->region->current = dot; | |
2902 | ||
562d3460 TW |
2903 | /* Make sure the new address is within the region. */ |
2904 | os_region_check (os, os->region, os->addr_tree, | |
2905 | os->bfd_section->vma); | |
2906 | ||
2907 | /* if there's no load address specified, use the run region as | |
2908 | the load region */ | |
2909 | if (os->lma_region == NULL && os->load_base == NULL) | |
2910 | os->lma_region = os->region; | |
2911 | ||
2912 | if (os->lma_region != NULL) | |
2913 | { | |
2914 | if (os->load_base != NULL) | |
2915 | { | |
2916 | einfo (_("%X%P: use an absolute load address or a load memory region, not both\n")); | |
2917 | } | |
2918 | else | |
2919 | { | |
2920 | /* don't allocate twice */ | |
2921 | if (os->lma_region != os->region) | |
2922 | { | |
2923 | /* set load_base, which will be handled later */ | |
2924 | os->load_base = exp_intop (os->lma_region->current); | |
2925 | os->lma_region->current += | |
2926 | os->bfd_section->_raw_size / opb; | |
2927 | os_region_check (os, os->lma_region, NULL, | |
2928 | os->bfd_section->lma); | |
2929 | } | |
2930 | } | |
2931 | } | |
252b5132 RH |
2932 | } |
2933 | } | |
2934 | break; | |
2935 | ||
2936 | case lang_constructors_statement_enum: | |
2937 | dot = lang_size_sections (constructor_list.head, | |
2938 | output_section_statement, | |
2939 | &s->wild_statement.children.head, | |
2940 | fill, | |
2941 | dot, relax); | |
2942 | break; | |
2943 | ||
2944 | case lang_data_statement_enum: | |
2945 | { | |
2946 | unsigned int size = 0; | |
2947 | ||
2948 | s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma; | |
2949 | s->data_statement.output_section = | |
2950 | output_section_statement->bfd_section; | |
2951 | ||
2952 | switch (s->data_statement.type) | |
2953 | { | |
9e4ed18c TW |
2954 | default: |
2955 | abort(); | |
252b5132 RH |
2956 | case QUAD: |
2957 | case SQUAD: | |
2958 | size = QUAD_SIZE; | |
2959 | break; | |
2960 | case LONG: | |
2961 | size = LONG_SIZE; | |
2962 | break; | |
2963 | case SHORT: | |
2964 | size = SHORT_SIZE; | |
2965 | break; | |
2966 | case BYTE: | |
2967 | size = BYTE_SIZE; | |
2968 | break; | |
2969 | } | |
4cbfc3ac TW |
2970 | if (size < opb) |
2971 | size = opb; | |
2972 | dot += size / opb; | |
252b5132 RH |
2973 | output_section_statement->bfd_section->_raw_size += size; |
2974 | /* The output section gets contents, and then we inspect for | |
2975 | any flags set in the input script which override any ALLOC. */ | |
2976 | output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; | |
2977 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) { | |
2978 | output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD; | |
2979 | } | |
2980 | } | |
2981 | break; | |
2982 | ||
2983 | case lang_reloc_statement_enum: | |
2984 | { | |
2985 | int size; | |
2986 | ||
2987 | s->reloc_statement.output_vma = | |
2988 | dot - output_section_statement->bfd_section->vma; | |
2989 | s->reloc_statement.output_section = | |
2990 | output_section_statement->bfd_section; | |
2991 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
4cbfc3ac | 2992 | dot += size / opb; |
252b5132 RH |
2993 | output_section_statement->bfd_section->_raw_size += size; |
2994 | } | |
2995 | break; | |
2996 | ||
2997 | case lang_wild_statement_enum: | |
2998 | ||
2999 | dot = lang_size_sections (s->wild_statement.children.head, | |
3000 | output_section_statement, | |
3001 | &s->wild_statement.children.head, | |
3002 | ||
3003 | fill, dot, relax); | |
3004 | ||
3005 | break; | |
3006 | ||
3007 | case lang_object_symbols_statement_enum: | |
3008 | link_info.create_object_symbols_section = | |
3009 | output_section_statement->bfd_section; | |
3010 | break; | |
3011 | case lang_output_statement_enum: | |
3012 | case lang_target_statement_enum: | |
3013 | break; | |
3014 | case lang_input_section_enum: | |
3015 | { | |
3016 | asection *i; | |
3017 | ||
3018 | i = (*prev)->input_section.section; | |
3019 | if (! relax) | |
3020 | { | |
3021 | if (i->_cooked_size == 0) | |
3022 | i->_cooked_size = i->_raw_size; | |
3023 | } | |
3024 | else | |
3025 | { | |
3026 | boolean again; | |
3027 | ||
3028 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) | |
3029 | einfo (_("%P%F: can't relax section: %E\n")); | |
3030 | if (again) | |
3031 | relax_again = true; | |
3032 | } | |
3033 | dot = size_input_section (prev, | |
3034 | output_section_statement, | |
3035 | output_section_statement->fill, | |
3036 | dot, relax); | |
3037 | } | |
3038 | break; | |
3039 | case lang_input_statement_enum: | |
3040 | break; | |
3041 | case lang_fill_statement_enum: | |
3042 | s->fill_statement.output_section = output_section_statement->bfd_section; | |
3043 | ||
3044 | fill = s->fill_statement.fill; | |
3045 | break; | |
3046 | case lang_assignment_statement_enum: | |
3047 | { | |
3048 | bfd_vma newdot = dot; | |
3049 | ||
3050 | exp_fold_tree (s->assignment_statement.exp, | |
3051 | output_section_statement, | |
3052 | lang_allocating_phase_enum, | |
3053 | dot, | |
3054 | &newdot); | |
3055 | ||
3056 | if (newdot != dot) | |
3057 | { | |
3058 | /* The assignment changed dot. Insert a pad. */ | |
3059 | if (output_section_statement == abs_output_section) | |
3060 | { | |
3061 | /* If we don't have an output section, then just adjust | |
3062 | the default memory address. */ | |
3063 | lang_memory_region_lookup ("*default*")->current = newdot; | |
3064 | } | |
3065 | else if (!relax) | |
3066 | { | |
3067 | lang_statement_union_type *new = | |
3068 | ((lang_statement_union_type *) | |
3069 | stat_alloc (sizeof (lang_padding_statement_type))); | |
3070 | ||
3071 | /* Link into existing chain. */ | |
3072 | new->header.next = *prev; | |
3073 | *prev = new; | |
3074 | new->header.type = lang_padding_statement_enum; | |
3075 | new->padding_statement.output_section = | |
3076 | output_section_statement->bfd_section; | |
3077 | new->padding_statement.output_offset = | |
3078 | dot - output_section_statement->bfd_section->vma; | |
3079 | new->padding_statement.fill = fill; | |
4cbfc3ac | 3080 | new->padding_statement.size = (newdot - dot) * opb; |
252b5132 RH |
3081 | output_section_statement->bfd_section->_raw_size += |
3082 | new->padding_statement.size; | |
3083 | } | |
3084 | ||
3085 | dot = newdot; | |
3086 | } | |
3087 | } | |
3088 | break; | |
3089 | ||
3090 | case lang_padding_statement_enum: | |
3091 | /* If we are relaxing, and this is not the first pass, some | |
3092 | padding statements may have been inserted during previous | |
3093 | passes. We may have to move the padding statement to a new | |
3094 | location if dot has a different value at this point in this | |
3095 | pass than it did at this point in the previous pass. */ | |
3096 | s->padding_statement.output_offset = | |
3097 | dot - output_section_statement->bfd_section->vma; | |
4cbfc3ac | 3098 | dot += s->padding_statement.size / opb; |
252b5132 RH |
3099 | output_section_statement->bfd_section->_raw_size += |
3100 | s->padding_statement.size; | |
3101 | break; | |
3102 | ||
3103 | case lang_group_statement_enum: | |
3104 | dot = lang_size_sections (s->group_statement.children.head, | |
3105 | output_section_statement, | |
3106 | &s->group_statement.children.head, | |
3107 | fill, dot, relax); | |
3108 | break; | |
3109 | ||
3110 | default: | |
3111 | FAIL (); | |
3112 | break; | |
3113 | ||
3114 | /* This can only get here when relaxing is turned on. */ | |
3115 | ||
3116 | case lang_address_statement_enum: | |
3117 | break; | |
3118 | } | |
3119 | prev = &s->header.next; | |
3120 | } | |
3121 | return dot; | |
3122 | } | |
3123 | ||
3124 | bfd_vma | |
3125 | lang_do_assignments (s, output_section_statement, fill, dot) | |
3126 | lang_statement_union_type * s; | |
3127 | lang_output_section_statement_type * output_section_statement; | |
3128 | fill_type fill; | |
3129 | bfd_vma dot; | |
3130 | { | |
f6af82bd AM |
3131 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
3132 | ldfile_output_machine); | |
4cbfc3ac | 3133 | |
252b5132 RH |
3134 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
3135 | { | |
3136 | switch (s->header.type) | |
3137 | { | |
3138 | case lang_constructors_statement_enum: | |
3139 | dot = lang_do_assignments (constructor_list.head, | |
3140 | output_section_statement, | |
3141 | fill, | |
3142 | dot); | |
3143 | break; | |
3144 | ||
3145 | case lang_output_section_statement_enum: | |
3146 | { | |
3147 | lang_output_section_statement_type *os = | |
3148 | &(s->output_section_statement); | |
3149 | ||
3150 | if (os->bfd_section != NULL) | |
3151 | { | |
3152 | dot = os->bfd_section->vma; | |
3153 | (void) lang_do_assignments (os->children.head, os, | |
3154 | os->fill, dot); | |
4cbfc3ac TW |
3155 | dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb; |
3156 | ||
252b5132 RH |
3157 | } |
3158 | if (os->load_base) | |
3159 | { | |
3160 | /* If nothing has been placed into the output section then | |
3161 | it won't have a bfd_section. */ | |
3162 | if (os->bfd_section) | |
3163 | { | |
3164 | os->bfd_section->lma | |
3165 | = exp_get_abs_int(os->load_base, 0,"load base", lang_final_phase_enum); | |
3166 | } | |
3167 | } | |
3168 | } | |
3169 | break; | |
3170 | case lang_wild_statement_enum: | |
3171 | ||
3172 | dot = lang_do_assignments (s->wild_statement.children.head, | |
3173 | output_section_statement, | |
3174 | fill, dot); | |
3175 | ||
3176 | break; | |
3177 | ||
3178 | case lang_object_symbols_statement_enum: | |
3179 | case lang_output_statement_enum: | |
3180 | case lang_target_statement_enum: | |
3181 | #if 0 | |
3182 | case lang_common_statement_enum: | |
3183 | #endif | |
3184 | break; | |
3185 | case lang_data_statement_enum: | |
3186 | { | |
3187 | etree_value_type value; | |
3188 | ||
3189 | value = exp_fold_tree (s->data_statement.exp, | |
3190 | abs_output_section, | |
3191 | lang_final_phase_enum, dot, &dot); | |
3192 | s->data_statement.value = value.value; | |
3193 | if (value.valid_p == false) | |
3194 | einfo (_("%F%P: invalid data statement\n")); | |
3195 | } | |
4cbfc3ac | 3196 | { |
f6af82bd | 3197 | unsigned int size; |
4cbfc3ac TW |
3198 | switch (s->data_statement.type) |
3199 | { | |
9e4ed18c TW |
3200 | default: |
3201 | abort(); | |
4cbfc3ac TW |
3202 | case QUAD: |
3203 | case SQUAD: | |
3204 | size = QUAD_SIZE; | |
3205 | break; | |
3206 | case LONG: | |
3207 | size = LONG_SIZE; | |
3208 | break; | |
3209 | case SHORT: | |
3210 | size = SHORT_SIZE; | |
3211 | break; | |
3212 | case BYTE: | |
3213 | size = BYTE_SIZE; | |
3214 | break; | |
3215 | } | |
3216 | if (size < opb) | |
3217 | size = opb; | |
3218 | dot += size / opb; | |
3219 | } | |
252b5132 RH |
3220 | break; |
3221 | ||
3222 | case lang_reloc_statement_enum: | |
3223 | { | |
3224 | etree_value_type value; | |
3225 | ||
3226 | value = exp_fold_tree (s->reloc_statement.addend_exp, | |
3227 | abs_output_section, | |
3228 | lang_final_phase_enum, dot, &dot); | |
3229 | s->reloc_statement.addend_value = value.value; | |
3230 | if (value.valid_p == false) | |
3231 | einfo (_("%F%P: invalid reloc statement\n")); | |
3232 | } | |
4cbfc3ac | 3233 | dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb; |
252b5132 RH |
3234 | break; |
3235 | ||
3236 | case lang_input_section_enum: | |
3237 | { | |
3238 | asection *in = s->input_section.section; | |
3239 | ||
3240 | if (in->_cooked_size != 0) | |
4cbfc3ac | 3241 | dot += in->_cooked_size / opb; |
252b5132 | 3242 | else |
4cbfc3ac | 3243 | dot += in->_raw_size / opb; |
252b5132 RH |
3244 | } |
3245 | break; | |
3246 | ||
3247 | case lang_input_statement_enum: | |
3248 | break; | |
3249 | case lang_fill_statement_enum: | |
3250 | fill = s->fill_statement.fill; | |
3251 | break; | |
3252 | case lang_assignment_statement_enum: | |
3253 | { | |
3254 | exp_fold_tree (s->assignment_statement.exp, | |
3255 | output_section_statement, | |
3256 | lang_final_phase_enum, | |
3257 | dot, | |
3258 | &dot); | |
3259 | } | |
3260 | ||
3261 | break; | |
3262 | case lang_padding_statement_enum: | |
4cbfc3ac | 3263 | dot += s->padding_statement.size / opb; |
252b5132 RH |
3264 | break; |
3265 | ||
3266 | case lang_group_statement_enum: | |
3267 | dot = lang_do_assignments (s->group_statement.children.head, | |
3268 | output_section_statement, | |
3269 | fill, dot); | |
3270 | ||
3271 | break; | |
3272 | ||
3273 | default: | |
3274 | FAIL (); | |
3275 | break; | |
3276 | case lang_address_statement_enum: | |
3277 | break; | |
3278 | } | |
3279 | ||
3280 | } | |
3281 | return dot; | |
3282 | } | |
3283 | ||
3284 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the | |
3285 | operator .startof. (section_name), it produces an undefined symbol | |
3286 | .startof.section_name. Similarly, when it sees | |
3287 | .sizeof. (section_name), it produces an undefined symbol | |
3288 | .sizeof.section_name. For all the output sections, we look for | |
3289 | such symbols, and set them to the correct value. */ | |
3290 | ||
3291 | static void | |
3292 | lang_set_startof () | |
3293 | { | |
3294 | asection *s; | |
3295 | ||
3296 | if (link_info.relocateable) | |
3297 | return; | |
3298 | ||
3299 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3300 | { | |
3301 | const char *secname; | |
3302 | char *buf; | |
3303 | struct bfd_link_hash_entry *h; | |
3304 | ||
3305 | secname = bfd_get_section_name (output_bfd, s); | |
3306 | buf = xmalloc (10 + strlen (secname)); | |
3307 | ||
3308 | sprintf (buf, ".startof.%s", secname); | |
3309 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); | |
3310 | if (h != NULL && h->type == bfd_link_hash_undefined) | |
3311 | { | |
3312 | h->type = bfd_link_hash_defined; | |
3313 | h->u.def.value = bfd_get_section_vma (output_bfd, s); | |
3314 | h->u.def.section = bfd_abs_section_ptr; | |
3315 | } | |
3316 | ||
3317 | sprintf (buf, ".sizeof.%s", secname); | |
3318 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); | |
3319 | if (h != NULL && h->type == bfd_link_hash_undefined) | |
3320 | { | |
f6af82bd AM |
3321 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
3322 | ldfile_output_machine); | |
252b5132 RH |
3323 | h->type = bfd_link_hash_defined; |
3324 | if (s->_cooked_size != 0) | |
4cbfc3ac | 3325 | h->u.def.value = s->_cooked_size / opb; |
252b5132 | 3326 | else |
4cbfc3ac | 3327 | h->u.def.value = s->_raw_size / opb; |
252b5132 RH |
3328 | h->u.def.section = bfd_abs_section_ptr; |
3329 | } | |
3330 | ||
3331 | free (buf); | |
3332 | } | |
3333 | } | |
3334 | ||
3335 | static void | |
3336 | lang_finish () | |
3337 | { | |
3338 | struct bfd_link_hash_entry *h; | |
3339 | boolean warn; | |
3340 | ||
3341 | if (link_info.relocateable || link_info.shared) | |
3342 | warn = false; | |
3343 | else | |
3344 | warn = true; | |
3345 | ||
3346 | if (entry_symbol == (char *) NULL) | |
3347 | { | |
3348 | /* No entry has been specified. Look for start, but don't warn | |
3349 | if we don't find it. */ | |
3350 | entry_symbol = "start"; | |
3351 | warn = false; | |
3352 | } | |
3353 | ||
3354 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true); | |
3355 | if (h != (struct bfd_link_hash_entry *) NULL | |
3356 | && (h->type == bfd_link_hash_defined | |
3357 | || h->type == bfd_link_hash_defweak) | |
3358 | && h->u.def.section->output_section != NULL) | |
3359 | { | |
3360 | bfd_vma val; | |
3361 | ||
3362 | val = (h->u.def.value | |
3363 | + bfd_get_section_vma (output_bfd, | |
3364 | h->u.def.section->output_section) | |
3365 | + h->u.def.section->output_offset); | |
3366 | if (! bfd_set_start_address (output_bfd, val)) | |
3367 | einfo (_("%P%F:%s: can't set start address\n"), entry_symbol); | |
3368 | } | |
3369 | else | |
3370 | { | |
3371 | bfd_vma val; | |
3372 | CONST char *send; | |
3373 | ||
3374 | /* We couldn't find the entry symbol. Try parsing it as a | |
3375 | number. */ | |
3376 | val = bfd_scan_vma (entry_symbol, &send, 0); | |
3377 | if (*send == '\0') | |
3378 | { | |
3379 | if (! bfd_set_start_address (output_bfd, val)) | |
3380 | einfo (_("%P%F: can't set start address\n")); | |
3381 | } | |
3382 | else | |
3383 | { | |
3384 | asection *ts; | |
3385 | ||
3386 | /* Can't find the entry symbol, and it's not a number. Use | |
3387 | the first address in the text section. */ | |
3388 | ts = bfd_get_section_by_name (output_bfd, ".text"); | |
3389 | if (ts != (asection *) NULL) | |
3390 | { | |
3391 | if (warn) | |
3392 | einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"), | |
3393 | entry_symbol, bfd_get_section_vma (output_bfd, ts)); | |
3394 | if (! bfd_set_start_address (output_bfd, | |
3395 | bfd_get_section_vma (output_bfd, | |
3396 | ts))) | |
3397 | einfo (_("%P%F: can't set start address\n")); | |
3398 | } | |
3399 | else | |
3400 | { | |
3401 | if (warn) | |
3402 | einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"), | |
3403 | entry_symbol); | |
3404 | } | |
3405 | } | |
3406 | } | |
3407 | } | |
3408 | ||
3409 | /* This is a small function used when we want to ignore errors from | |
3410 | BFD. */ | |
3411 | ||
3412 | static void | |
3413 | #ifdef ANSI_PROTOTYPES | |
87f2a346 | 3414 | ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...) |
252b5132 RH |
3415 | #else |
3416 | ignore_bfd_errors (s) | |
87f2a346 | 3417 | const char *s ATTRIBUTE_UNUSED; |
252b5132 RH |
3418 | #endif |
3419 | { | |
3420 | /* Don't do anything. */ | |
3421 | } | |
3422 | ||
3423 | /* Check that the architecture of all the input files is compatible | |
3424 | with the output file. Also call the backend to let it do any | |
3425 | other checking that is needed. */ | |
3426 | ||
3427 | static void | |
3428 | lang_check () | |
3429 | { | |
3430 | lang_statement_union_type *file; | |
3431 | bfd *input_bfd; | |
3432 | CONST bfd_arch_info_type *compatible; | |
3433 | ||
3434 | for (file = file_chain.head; | |
3435 | file != (lang_statement_union_type *) NULL; | |
3436 | file = file->input_statement.next) | |
3437 | { | |
3438 | input_bfd = file->input_statement.the_bfd; | |
3439 | compatible = bfd_arch_get_compatible (input_bfd, | |
3440 | output_bfd); | |
3441 | if (compatible == NULL) | |
3442 | { | |
3443 | if (command_line.warn_mismatch) | |
3444 | einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"), | |
3445 | bfd_printable_name (input_bfd), input_bfd, | |
3446 | bfd_printable_name (output_bfd)); | |
3447 | } | |
3448 | else | |
3449 | { | |
3450 | bfd_error_handler_type pfn = NULL; | |
3451 | ||
3452 | /* If we aren't supposed to warn about mismatched input | |
3453 | files, temporarily set the BFD error handler to a | |
3454 | function which will do nothing. We still want to call | |
3455 | bfd_merge_private_bfd_data, since it may set up | |
3456 | information which is needed in the output file. */ | |
3457 | if (! command_line.warn_mismatch) | |
3458 | pfn = bfd_set_error_handler (ignore_bfd_errors); | |
3459 | if (! bfd_merge_private_bfd_data (input_bfd, output_bfd)) | |
3460 | { | |
3461 | if (command_line.warn_mismatch) | |
3462 | einfo (_("%E%X: failed to merge target specific data of file %B\n"), | |
3463 | input_bfd); | |
3464 | } | |
3465 | if (! command_line.warn_mismatch) | |
3466 | bfd_set_error_handler (pfn); | |
3467 | } | |
3468 | } | |
3469 | } | |
3470 | ||
3471 | /* Look through all the global common symbols and attach them to the | |
3472 | correct section. The -sort-common command line switch may be used | |
3473 | to roughly sort the entries by size. */ | |
3474 | ||
3475 | static void | |
3476 | lang_common () | |
3477 | { | |
3478 | if (link_info.relocateable | |
3479 | && ! command_line.force_common_definition) | |
3480 | return; | |
3481 | ||
3482 | if (! config.sort_common) | |
3483 | bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL); | |
3484 | else | |
3485 | { | |
3486 | int power; | |
3487 | ||
3488 | for (power = 4; power >= 0; power--) | |
3489 | bfd_link_hash_traverse (link_info.hash, lang_one_common, | |
3490 | (PTR) &power); | |
3491 | } | |
3492 | } | |
3493 | ||
3494 | /* Place one common symbol in the correct section. */ | |
3495 | ||
3496 | static boolean | |
3497 | lang_one_common (h, info) | |
3498 | struct bfd_link_hash_entry *h; | |
3499 | PTR info; | |
3500 | { | |
3501 | unsigned int power_of_two; | |
3502 | bfd_vma size; | |
3503 | asection *section; | |
f6af82bd AM |
3504 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
3505 | ldfile_output_machine); | |
252b5132 RH |
3506 | |
3507 | if (h->type != bfd_link_hash_common) | |
3508 | return true; | |
3509 | ||
3510 | size = h->u.c.size; | |
3511 | power_of_two = h->u.c.p->alignment_power; | |
3512 | ||
3513 | if (config.sort_common | |
3514 | && power_of_two < (unsigned int) *(int *) info) | |
3515 | return true; | |
3516 | ||
3517 | section = h->u.c.p->section; | |
3518 | ||
3519 | /* Increase the size of the section. */ | |
4cbfc3ac TW |
3520 | section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb, |
3521 | (bfd_size_type) (1 << power_of_two)) * opb; | |
252b5132 RH |
3522 | |
3523 | /* Adjust the alignment if necessary. */ | |
3524 | if (power_of_two > section->alignment_power) | |
3525 | section->alignment_power = power_of_two; | |
3526 | ||
3527 | /* Change the symbol from common to defined. */ | |
3528 | h->type = bfd_link_hash_defined; | |
3529 | h->u.def.section = section; | |
3530 | h->u.def.value = section->_cooked_size; | |
3531 | ||
3532 | /* Increase the size of the section. */ | |
3533 | section->_cooked_size += size; | |
3534 | ||
3535 | /* Make sure the section is allocated in memory, and make sure that | |
3536 | it is no longer a common section. */ | |
3537 | section->flags |= SEC_ALLOC; | |
3538 | section->flags &= ~ SEC_IS_COMMON; | |
3539 | ||
3540 | if (config.map_file != NULL) | |
3541 | { | |
3542 | static boolean header_printed; | |
3543 | int len; | |
3544 | char *name; | |
3545 | char buf[50]; | |
3546 | ||
3547 | if (! header_printed) | |
3548 | { | |
3549 | minfo (_("\nAllocating common symbols\n")); | |
3550 | minfo (_("Common symbol size file\n\n")); | |
3551 | header_printed = true; | |
3552 | } | |
3553 | ||
3554 | name = demangle (h->root.string); | |
3555 | minfo ("%s", name); | |
3556 | len = strlen (name); | |
3557 | free (name); | |
3558 | ||
3559 | if (len >= 19) | |
3560 | { | |
3561 | print_nl (); | |
3562 | len = 0; | |
3563 | } | |
3564 | while (len < 20) | |
3565 | { | |
3566 | print_space (); | |
3567 | ++len; | |
3568 | } | |
3569 | ||
3570 | minfo ("0x"); | |
3571 | if (size <= 0xffffffff) | |
3572 | sprintf (buf, "%lx", (unsigned long) size); | |
3573 | else | |
3574 | sprintf_vma (buf, size); | |
3575 | minfo ("%s", buf); | |
3576 | len = strlen (buf); | |
3577 | ||
3578 | while (len < 16) | |
3579 | { | |
3580 | print_space (); | |
3581 | ++len; | |
3582 | } | |
3583 | ||
3584 | minfo ("%B\n", section->owner); | |
3585 | } | |
3586 | ||
3587 | return true; | |
3588 | } | |
3589 | ||
3590 | /* | |
3591 | run through the input files and ensure that every input | |
3592 | section has somewhere to go. If one is found without | |
3593 | a destination then create an input request and place it | |
3594 | into the statement tree. | |
3595 | */ | |
3596 | ||
3597 | static void | |
3598 | lang_place_orphans () | |
3599 | { | |
e50d8076 | 3600 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
3601 | { |
3602 | asection *s; | |
3603 | ||
3604 | for (s = file->the_bfd->sections; | |
3605 | s != (asection *) NULL; | |
3606 | s = s->next) | |
3607 | { | |
3608 | if (s->output_section == (asection *) NULL) | |
3609 | { | |
3610 | /* This section of the file is not attatched, root | |
3611 | around for a sensible place for it to go */ | |
3612 | ||
3613 | if (file->just_syms_flag) | |
3614 | { | |
3615 | /* We are only retrieving symbol values from this | |
3616 | file. We want the symbols to act as though the | |
3617 | values in the file are absolute. */ | |
3618 | s->output_section = bfd_abs_section_ptr; | |
3619 | s->output_offset = s->vma; | |
3620 | } | |
3621 | else if (strcmp (s->name, "COMMON") == 0) | |
3622 | { | |
3623 | /* This is a lonely common section which must have | |
3624 | come from an archive. We attach to the section | |
3625 | with the wildcard. */ | |
3626 | if (! link_info.relocateable | |
3627 | || command_line.force_common_definition) | |
3628 | { | |
3629 | if (default_common_section == NULL) | |
3630 | { | |
3631 | #if 0 | |
3632 | /* This message happens when using the | |
3633 | svr3.ifile linker script, so I have | |
3634 | disabled it. */ | |
3635 | info_msg (_("%P: no [COMMON] command, defaulting to .bss\n")); | |
3636 | #endif | |
3637 | default_common_section = | |
3638 | lang_output_section_statement_lookup (".bss"); | |
3639 | ||
3640 | } | |
3641 | wild_doit (&default_common_section->children, s, | |
3642 | default_common_section, file); | |
3643 | } | |
3644 | } | |
3645 | else if (ldemul_place_orphan (file, s)) | |
3646 | ; | |
3647 | else | |
3648 | { | |
3649 | lang_output_section_statement_type *os = | |
3650 | lang_output_section_statement_lookup (s->name); | |
3651 | ||
3652 | wild_doit (&os->children, s, os, file); | |
3653 | } | |
3654 | } | |
3655 | } | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | ||
3660 | void | |
aa8804e4 | 3661 | lang_set_flags (ptr, flags, invert) |
252b5132 RH |
3662 | lang_memory_region_type *ptr; |
3663 | CONST char *flags; | |
aa8804e4 | 3664 | int invert; |
252b5132 | 3665 | { |
aa8804e4 | 3666 | flagword *ptr_flags; |
252b5132 | 3667 | |
aa8804e4 | 3668 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
252b5132 RH |
3669 | while (*flags) |
3670 | { | |
3671 | switch (*flags) | |
3672 | { | |
252b5132 RH |
3673 | case 'A': case 'a': |
3674 | *ptr_flags |= SEC_ALLOC; | |
3675 | break; | |
3676 | ||
3677 | case 'R': case 'r': | |
3678 | *ptr_flags |= SEC_READONLY; | |
3679 | break; | |
3680 | ||
3681 | case 'W': case 'w': | |
3682 | *ptr_flags |= SEC_DATA; | |
3683 | break; | |
3684 | ||
3685 | case 'X': case 'x': | |
3686 | *ptr_flags |= SEC_CODE; | |
3687 | break; | |
3688 | ||
3689 | case 'L': case 'l': | |
3690 | case 'I': case 'i': | |
3691 | *ptr_flags |= SEC_LOAD; | |
3692 | break; | |
3693 | ||
3694 | default: | |
3695 | einfo (_("%P%F: invalid syntax in flags\n")); | |
3696 | break; | |
3697 | } | |
3698 | flags++; | |
3699 | } | |
3700 | } | |
3701 | ||
3702 | /* Call a function on each input file. This function will be called | |
3703 | on an archive, but not on the elements. */ | |
3704 | ||
3705 | void | |
3706 | lang_for_each_input_file (func) | |
3707 | void (*func) PARAMS ((lang_input_statement_type *)); | |
3708 | { | |
3709 | lang_input_statement_type *f; | |
3710 | ||
3711 | for (f = (lang_input_statement_type *) input_file_chain.head; | |
3712 | f != NULL; | |
3713 | f = (lang_input_statement_type *) f->next_real_file) | |
3714 | func (f); | |
3715 | } | |
3716 | ||
3717 | /* Call a function on each file. The function will be called on all | |
3718 | the elements of an archive which are included in the link, but will | |
3719 | not be called on the archive file itself. */ | |
3720 | ||
3721 | void | |
3722 | lang_for_each_file (func) | |
3723 | void (*func) PARAMS ((lang_input_statement_type *)); | |
3724 | { | |
e50d8076 | 3725 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 RH |
3726 | { |
3727 | func (f); | |
3728 | } | |
3729 | } | |
3730 | ||
3731 | #if 0 | |
3732 | ||
3733 | /* Not used. */ | |
3734 | ||
3735 | void | |
3736 | lang_for_each_input_section (func) | |
3737 | void (*func) PARAMS ((bfd * ab, asection * as)); | |
3738 | { | |
e50d8076 | 3739 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 | 3740 | { |
e50d8076 | 3741 | asection * s; |
252b5132 RH |
3742 | |
3743 | for (s = f->the_bfd->sections; | |
3744 | s != (asection *) NULL; | |
3745 | s = s->next) | |
3746 | { | |
3747 | func (f->the_bfd, s); | |
3748 | } | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | #endif | |
3753 | ||
3754 | void | |
3755 | ldlang_add_file (entry) | |
3756 | lang_input_statement_type * entry; | |
3757 | { | |
3758 | bfd **pp; | |
3759 | ||
3760 | lang_statement_append (&file_chain, | |
3761 | (lang_statement_union_type *) entry, | |
3762 | &entry->next); | |
3763 | ||
3764 | /* The BFD linker needs to have a list of all input BFDs involved in | |
3765 | a link. */ | |
3766 | ASSERT (entry->the_bfd->link_next == (bfd *) NULL); | |
3767 | ASSERT (entry->the_bfd != output_bfd); | |
3768 | for (pp = &link_info.input_bfds; | |
3769 | *pp != (bfd *) NULL; | |
3770 | pp = &(*pp)->link_next) | |
3771 | ; | |
3772 | *pp = entry->the_bfd; | |
3773 | entry->the_bfd->usrdata = (PTR) entry; | |
3774 | bfd_set_gp_size (entry->the_bfd, g_switch_value); | |
3775 | ||
3776 | /* Look through the sections and check for any which should not be | |
3777 | included in the link. We need to do this now, so that we can | |
3778 | notice when the backend linker tries to report multiple | |
3779 | definition errors for symbols which are in sections we aren't | |
3780 | going to link. FIXME: It might be better to entirely ignore | |
3781 | symbols which are defined in sections which are going to be | |
3782 | discarded. This would require modifying the backend linker for | |
3783 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
3784 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
3785 | ||
3786 | bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry); | |
3787 | } | |
3788 | ||
3789 | void | |
3790 | lang_add_output (name, from_script) | |
3791 | CONST char *name; | |
3792 | int from_script; | |
3793 | { | |
3794 | /* Make -o on command line override OUTPUT in script. */ | |
3795 | if (had_output_filename == false || !from_script) | |
3796 | { | |
3797 | output_filename = name; | |
3798 | had_output_filename = true; | |
3799 | } | |
3800 | } | |
3801 | ||
3802 | ||
3803 | static lang_output_section_statement_type *current_section; | |
3804 | ||
3805 | static int | |
3806 | topower (x) | |
3807 | int x; | |
3808 | { | |
3809 | unsigned int i = 1; | |
3810 | int l; | |
3811 | ||
3812 | if (x < 0) | |
3813 | return -1; | |
3814 | ||
3815 | for (l = 0; l < 32; l++) | |
3816 | { | |
3817 | if (i >= (unsigned int) x) | |
3818 | return l; | |
3819 | i <<= 1; | |
3820 | } | |
3821 | ||
3822 | return 0; | |
3823 | } | |
3824 | ||
aea4bd9d | 3825 | lang_output_section_statement_type * |
252b5132 RH |
3826 | lang_enter_output_section_statement (output_section_statement_name, |
3827 | address_exp, sectype, block_value, | |
3828 | align, subalign, ebase) | |
3829 | const char *output_section_statement_name; | |
3830 | etree_type * address_exp; | |
3831 | enum section_type sectype; | |
3832 | bfd_vma block_value; | |
3833 | etree_type *align; | |
3834 | etree_type *subalign; | |
3835 | etree_type *ebase; | |
3836 | { | |
3837 | lang_output_section_statement_type *os; | |
3838 | ||
3839 | current_section = | |
3840 | os = | |
3841 | lang_output_section_statement_lookup (output_section_statement_name); | |
3842 | ||
3843 | ||
3844 | ||
3845 | /* Add this statement to tree */ | |
3846 | /* add_statement(lang_output_section_statement_enum, | |
3847 | output_section_statement);*/ | |
3848 | /* Make next things chain into subchain of this */ | |
3849 | ||
3850 | if (os->addr_tree == | |
3851 | (etree_type *) NULL) | |
3852 | { | |
3853 | os->addr_tree = | |
3854 | address_exp; | |
3855 | } | |
3856 | os->sectype = sectype; | |
3857 | if (sectype != noload_section) | |
3858 | os->flags = SEC_NO_FLAGS; | |
3859 | else | |
3860 | os->flags = SEC_NEVER_LOAD; | |
3861 | os->block_value = block_value ? block_value : 1; | |
3862 | stat_ptr = &os->children; | |
3863 | ||
3864 | os->subsection_alignment = topower( | |
3865 | exp_get_value_int(subalign, -1, | |
3866 | "subsection alignment", | |
3867 | 0)); | |
3868 | os->section_alignment = topower( | |
3869 | exp_get_value_int(align, -1, | |
3870 | "section alignment", 0)); | |
3871 | ||
3872 | os->load_base = ebase; | |
aea4bd9d | 3873 | return os; |
252b5132 RH |
3874 | } |
3875 | ||
3876 | ||
3877 | void | |
3878 | lang_final () | |
3879 | { | |
3880 | lang_output_statement_type *new = | |
3881 | new_stat (lang_output_statement, stat_ptr); | |
3882 | ||
3883 | new->name = output_filename; | |
3884 | } | |
3885 | ||
3886 | /* Reset the current counters in the regions */ | |
3887 | static void | |
3888 | reset_memory_regions () | |
3889 | { | |
3890 | lang_memory_region_type *p = lang_memory_region_list; | |
3891 | ||
3892 | for (p = lang_memory_region_list; | |
3893 | p != (lang_memory_region_type *) NULL; | |
3894 | p = p->next) | |
3895 | { | |
3896 | p->old_length = (bfd_size_type) (p->current - p->origin); | |
3897 | p->current = p->origin; | |
3898 | } | |
3899 | } | |
3900 | ||
252b5132 RH |
3901 | /* Expand a wild statement for a particular FILE, marking its sections KEEP |
3902 | as needed. SECTION may be NULL, in which case it is a wild card. */ | |
3903 | ||
3904 | static void | |
4dec4d4e | 3905 | gc_section_callback (ptr, section, file, data) |
252b5132 | 3906 | lang_wild_statement_type *ptr; |
4dec4d4e | 3907 | asection *section; |
87f2a346 ILT |
3908 | lang_input_statement_type *file ATTRIBUTE_UNUSED; |
3909 | void *data ATTRIBUTE_UNUSED; | |
252b5132 | 3910 | { |
4dec4d4e RH |
3911 | /* If the wild pattern was marked KEEP, the member sections |
3912 | should be as well. */ | |
3913 | if (ptr->keep_sections) | |
3914 | section->flags |= SEC_KEEP; | |
252b5132 RH |
3915 | } |
3916 | ||
3917 | /* Handle a wild statement, marking it against GC. SECTION or FILE or both | |
3918 | may be NULL, indicating that it is a wildcard. */ | |
3919 | ||
3920 | static void | |
3921 | lang_gc_wild (s, section, file) | |
3922 | lang_wild_statement_type *s; | |
3923 | const char *section; | |
3924 | const char *file; | |
3925 | { | |
4dec4d4e | 3926 | walk_wild (s, section, file, gc_section_callback, NULL); |
252b5132 RH |
3927 | } |
3928 | ||
3929 | /* Iterate over sections marking them against GC. */ | |
3930 | ||
3931 | static void | |
3932 | lang_gc_sections_1 (s) | |
3933 | lang_statement_union_type * s; | |
3934 | { | |
3935 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
3936 | { | |
3937 | switch (s->header.type) | |
3938 | { | |
3939 | case lang_wild_statement_enum: | |
3940 | lang_gc_wild (&s->wild_statement, | |
3941 | s->wild_statement.section_name, | |
3942 | s->wild_statement.filename); | |
3943 | break; | |
3944 | case lang_constructors_statement_enum: | |
3945 | lang_gc_sections_1 (constructor_list.head); | |
3946 | break; | |
3947 | case lang_output_section_statement_enum: | |
3948 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
3949 | break; | |
3950 | case lang_group_statement_enum: | |
3951 | lang_gc_sections_1 (s->group_statement.children.head); | |
3952 | break; | |
3953 | default: | |
3954 | break; | |
3955 | } | |
3956 | } | |
3957 | } | |
3958 | ||
3959 | static void | |
3960 | lang_gc_sections () | |
3961 | { | |
3962 | struct bfd_link_hash_entry *h; | |
3963 | ldlang_undef_chain_list_type *ulist, fake_list_start; | |
3964 | ||
3965 | /* Keep all sections so marked in the link script. */ | |
3966 | ||
3967 | lang_gc_sections_1 (statement_list.head); | |
3968 | ||
3969 | /* Keep all sections containing symbols undefined on the command-line. | |
3970 | Handle the entry symbol at the same time. */ | |
7c83b342 DE |
3971 | |
3972 | if (entry_symbol != NULL) | |
3973 | { | |
3974 | fake_list_start.next = ldlang_undef_chain_list_head; | |
3975 | fake_list_start.name = (char *) entry_symbol; | |
3976 | ulist = &fake_list_start; | |
3977 | } | |
252b5132 | 3978 | else |
7c83b342 | 3979 | ulist = ldlang_undef_chain_list_head; |
252b5132 | 3980 | |
7c83b342 | 3981 | for (; ulist; ulist = ulist->next) |
252b5132 RH |
3982 | { |
3983 | h = bfd_link_hash_lookup (link_info.hash, ulist->name, | |
3984 | false, false, false); | |
3985 | ||
3986 | if (h != (struct bfd_link_hash_entry *) NULL | |
3987 | && (h->type == bfd_link_hash_defined | |
3988 | || h->type == bfd_link_hash_defweak) | |
3989 | && ! bfd_is_abs_section (h->u.def.section)) | |
3990 | { | |
3991 | h->u.def.section->flags |= SEC_KEEP; | |
3992 | } | |
3993 | } | |
3994 | ||
3995 | bfd_gc_sections (output_bfd, &link_info); | |
3996 | } | |
3997 | ||
3998 | void | |
3999 | lang_process () | |
4000 | { | |
4001 | lang_reasonable_defaults (); | |
4002 | current_target = default_target; | |
4003 | ||
4004 | lang_for_each_statement (ldlang_open_output); /* Open the output file */ | |
4005 | ||
4006 | ldemul_create_output_section_statements (); | |
4007 | ||
4008 | /* Add to the hash table all undefineds on the command line */ | |
4009 | lang_place_undefineds (); | |
4010 | ||
9503fd87 ILT |
4011 | already_linked_table_init (); |
4012 | ||
252b5132 RH |
4013 | /* Create a bfd for each input file */ |
4014 | current_target = default_target; | |
4015 | open_input_bfds (statement_list.head, false); | |
4016 | ||
4017 | ldemul_after_open (); | |
4018 | ||
9503fd87 ILT |
4019 | already_linked_table_free (); |
4020 | ||
252b5132 RH |
4021 | /* Make sure that we're not mixing architectures. We call this |
4022 | after all the input files have been opened, but before we do any | |
4023 | other processing, so that any operations merge_private_bfd_data | |
4024 | does on the output file will be known during the rest of the | |
4025 | link. */ | |
4026 | lang_check (); | |
4027 | ||
4028 | /* Handle .exports instead of a version script if we're told to do so. */ | |
4029 | if (command_line.version_exports_section) | |
4030 | lang_do_version_exports_section (); | |
4031 | ||
4032 | /* Build all sets based on the information gathered from the input | |
4033 | files. */ | |
4034 | ldctor_build_sets (); | |
4035 | ||
4036 | /* Remove unreferenced sections if asked to. */ | |
4037 | if (command_line.gc_sections) | |
4038 | lang_gc_sections (); | |
4039 | ||
4040 | /* Size up the common data */ | |
4041 | lang_common (); | |
4042 | ||
4043 | /* Run through the contours of the script and attach input sections | |
4044 | to the correct output sections | |
4045 | */ | |
4046 | map_input_to_output_sections (statement_list.head, (char *) NULL, | |
4047 | (lang_output_section_statement_type *) NULL); | |
4048 | ||
4049 | ||
4050 | /* Find any sections not attached explicitly and handle them */ | |
4051 | lang_place_orphans (); | |
4052 | ||
4053 | ldemul_before_allocation (); | |
4054 | ||
4055 | /* We must record the program headers before we try to fix the | |
4056 | section positions, since they will affect SIZEOF_HEADERS. */ | |
4057 | lang_record_phdrs (); | |
4058 | ||
4059 | /* Now run around and relax if we can */ | |
4060 | if (command_line.relax) | |
4061 | { | |
4062 | /* First time round is a trial run to get the 'worst case' | |
4063 | addresses of the objects if there was no relaxing. */ | |
4064 | lang_size_sections (statement_list.head, | |
4065 | abs_output_section, | |
4066 | &(statement_list.head), 0, (bfd_vma) 0, false); | |
4067 | ||
4068 | /* Keep relaxing until bfd_relax_section gives up. */ | |
4069 | do | |
4070 | { | |
4071 | reset_memory_regions (); | |
4072 | ||
4073 | relax_again = false; | |
4074 | ||
4075 | /* Note: pe-dll.c does something like this also. If you find | |
4076 | you need to change this code, you probably need to change | |
4077 | pe-dll.c also. DJ */ | |
4078 | ||
4079 | /* Do all the assignments with our current guesses as to | |
4080 | section sizes. */ | |
4081 | lang_do_assignments (statement_list.head, | |
4082 | abs_output_section, | |
4083 | (fill_type) 0, (bfd_vma) 0); | |
4084 | ||
4085 | /* Perform another relax pass - this time we know where the | |
4086 | globals are, so can make better guess. */ | |
4087 | lang_size_sections (statement_list.head, | |
4088 | abs_output_section, | |
4089 | &(statement_list.head), 0, (bfd_vma) 0, true); | |
4090 | } | |
4091 | while (relax_again); | |
4092 | } | |
4093 | else | |
4094 | { | |
4095 | /* Size up the sections. */ | |
4096 | lang_size_sections (statement_list.head, | |
4097 | abs_output_section, | |
4098 | &(statement_list.head), 0, (bfd_vma) 0, false); | |
4099 | } | |
4100 | ||
4101 | /* See if anything special should be done now we know how big | |
4102 | everything is. */ | |
4103 | ldemul_after_allocation (); | |
4104 | ||
4105 | /* Fix any .startof. or .sizeof. symbols. */ | |
4106 | lang_set_startof (); | |
4107 | ||
4108 | /* Do all the assignments, now that we know the final restingplaces | |
4109 | of all the symbols */ | |
4110 | ||
4111 | lang_do_assignments (statement_list.head, | |
4112 | abs_output_section, | |
4113 | (fill_type) 0, (bfd_vma) 0); | |
4114 | ||
4115 | /* Make sure that the section addresses make sense. */ | |
4116 | if (! link_info.relocateable | |
4117 | && command_line.check_section_addresses) | |
4118 | lang_check_section_addresses (); | |
4119 | ||
4120 | /* Final stuffs */ | |
4121 | ||
4122 | ldemul_finish (); | |
4123 | lang_finish (); | |
4124 | } | |
4125 | ||
4126 | /* EXPORTED TO YACC */ | |
4127 | ||
4128 | void | |
4129 | lang_add_wild (section_name, sections_sorted, filename, filenames_sorted, | |
18625d54 | 4130 | keep_sections, exclude_filename_list) |
252b5132 RH |
4131 | const char *const section_name; |
4132 | boolean sections_sorted; | |
4133 | const char *const filename; | |
4134 | boolean filenames_sorted; | |
4135 | boolean keep_sections; | |
18625d54 | 4136 | struct name_list *exclude_filename_list; |
252b5132 RH |
4137 | { |
4138 | lang_wild_statement_type *new = new_stat (lang_wild_statement, | |
4139 | stat_ptr); | |
4140 | ||
4141 | if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0) | |
4142 | { | |
4143 | placed_commons = true; | |
4144 | } | |
4145 | if (filename != NULL && ! wildcardp (filename)) | |
4146 | { | |
4147 | lang_has_input_file = true; | |
4148 | } | |
4149 | new->section_name = section_name; | |
4150 | new->sections_sorted = sections_sorted; | |
4151 | new->filename = filename; | |
4152 | new->filenames_sorted = filenames_sorted; | |
4153 | new->keep_sections = keep_sections; | |
18625d54 | 4154 | new->exclude_filename_list = exclude_filename_list; |
252b5132 RH |
4155 | lang_list_init (&new->children); |
4156 | } | |
4157 | ||
4158 | void | |
4159 | lang_section_start (name, address) | |
4160 | CONST char *name; | |
4161 | etree_type * address; | |
4162 | { | |
4163 | lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr); | |
4164 | ||
4165 | ad->section_name = name; | |
4166 | ad->address = address; | |
4167 | } | |
4168 | ||
4169 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
4170 | because of a -e argument on the command line, or zero if this is | |
4171 | called by ENTRY in a linker script. Command line arguments take | |
4172 | precedence. */ | |
4173 | ||
4174 | void | |
4175 | lang_add_entry (name, cmdline) | |
4176 | CONST char *name; | |
4177 | boolean cmdline; | |
4178 | { | |
4179 | if (entry_symbol == NULL | |
4180 | || cmdline | |
4181 | || ! entry_from_cmdline) | |
4182 | { | |
4183 | entry_symbol = name; | |
4184 | entry_from_cmdline = cmdline; | |
4185 | } | |
4186 | } | |
4187 | ||
4188 | void | |
4189 | lang_add_target (name) | |
4190 | CONST char *name; | |
4191 | { | |
4192 | lang_target_statement_type *new = new_stat (lang_target_statement, | |
4193 | stat_ptr); | |
4194 | ||
4195 | new->target = name; | |
4196 | ||
4197 | } | |
4198 | ||
4199 | void | |
4200 | lang_add_map (name) | |
4201 | CONST char *name; | |
4202 | { | |
4203 | while (*name) | |
4204 | { | |
4205 | switch (*name) | |
4206 | { | |
4207 | case 'F': | |
4208 | map_option_f = true; | |
4209 | break; | |
4210 | } | |
4211 | name++; | |
4212 | } | |
4213 | } | |
4214 | ||
4215 | void | |
4216 | lang_add_fill (exp) | |
4217 | int exp; | |
4218 | { | |
4219 | lang_fill_statement_type *new = new_stat (lang_fill_statement, | |
4220 | stat_ptr); | |
4221 | ||
4222 | new->fill = exp; | |
4223 | } | |
4224 | ||
4225 | void | |
4226 | lang_add_data (type, exp) | |
4227 | int type; | |
4228 | union etree_union *exp; | |
4229 | { | |
4230 | ||
4231 | lang_data_statement_type *new = new_stat (lang_data_statement, | |
4232 | stat_ptr); | |
4233 | ||
4234 | new->exp = exp; | |
4235 | new->type = type; | |
4236 | ||
4237 | } | |
4238 | ||
4239 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
4240 | generate. HOWTO is the corresponding howto structure (we could | |
4241 | look this up, but the caller has already done so). SECTION is the | |
4242 | section to generate a reloc against, or NAME is the name of the | |
4243 | symbol to generate a reloc against. Exactly one of SECTION and | |
4244 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
4245 | ||
4246 | void | |
4247 | lang_add_reloc (reloc, howto, section, name, addend) | |
4248 | bfd_reloc_code_real_type reloc; | |
4249 | reloc_howto_type *howto; | |
4250 | asection *section; | |
4251 | const char *name; | |
4252 | union etree_union *addend; | |
4253 | { | |
4254 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
4255 | ||
4256 | p->reloc = reloc; | |
4257 | p->howto = howto; | |
4258 | p->section = section; | |
4259 | p->name = name; | |
4260 | p->addend_exp = addend; | |
4261 | ||
4262 | p->addend_value = 0; | |
4263 | p->output_section = NULL; | |
4264 | p->output_vma = 0; | |
4265 | } | |
4266 | ||
4267 | lang_assignment_statement_type * | |
4268 | lang_add_assignment (exp) | |
4269 | etree_type * exp; | |
4270 | { | |
4271 | lang_assignment_statement_type *new = new_stat (lang_assignment_statement, | |
4272 | stat_ptr); | |
4273 | ||
4274 | new->exp = exp; | |
4275 | return new; | |
4276 | } | |
4277 | ||
4278 | void | |
4279 | lang_add_attribute (attribute) | |
4280 | enum statement_enum attribute; | |
4281 | { | |
4282 | new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); | |
4283 | } | |
4284 | ||
4285 | void | |
4286 | lang_startup (name) | |
4287 | CONST char *name; | |
4288 | { | |
4289 | if (startup_file != (char *) NULL) | |
4290 | { | |
4291 | einfo (_("%P%Fmultiple STARTUP files\n")); | |
4292 | } | |
4293 | first_file->filename = name; | |
4294 | first_file->local_sym_name = name; | |
4295 | first_file->real = true; | |
4296 | ||
4297 | startup_file = name; | |
4298 | } | |
4299 | ||
4300 | void | |
4301 | lang_float (maybe) | |
4302 | boolean maybe; | |
4303 | { | |
4304 | lang_float_flag = maybe; | |
4305 | } | |
4306 | ||
4307 | void | |
562d3460 | 4308 | lang_leave_output_section_statement (fill, memspec, phdrs, lma_memspec) |
252b5132 RH |
4309 | bfd_vma fill; |
4310 | const char *memspec; | |
4311 | struct lang_output_section_phdr_list *phdrs; | |
562d3460 | 4312 | const char *lma_memspec; |
252b5132 RH |
4313 | { |
4314 | current_section->fill = fill; | |
4315 | current_section->region = lang_memory_region_lookup (memspec); | |
562d3460 TW |
4316 | if (strcmp (lma_memspec, "*default*") != 0) |
4317 | { | |
4318 | current_section->lma_region = lang_memory_region_lookup (lma_memspec); | |
4319 | /* if no runtime region has been given, but the load region has been, | |
4320 | use the load region */ | |
4321 | if (strcmp (memspec, "*default*") == 0) | |
4322 | current_section->region = lang_memory_region_lookup (lma_memspec); | |
4323 | } | |
252b5132 RH |
4324 | current_section->phdrs = phdrs; |
4325 | stat_ptr = &statement_list; | |
4326 | } | |
4327 | ||
4328 | /* | |
4329 | Create an absolute symbol with the given name with the value of the | |
4330 | address of first byte of the section named. | |
4331 | ||
4332 | If the symbol already exists, then do nothing. | |
4333 | */ | |
4334 | void | |
4335 | lang_abs_symbol_at_beginning_of (secname, name) | |
4336 | const char *secname; | |
4337 | const char *name; | |
4338 | { | |
4339 | struct bfd_link_hash_entry *h; | |
4340 | ||
4341 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); | |
4342 | if (h == (struct bfd_link_hash_entry *) NULL) | |
4343 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
4344 | ||
4345 | if (h->type == bfd_link_hash_new | |
4346 | || h->type == bfd_link_hash_undefined) | |
4347 | { | |
4348 | asection *sec; | |
4349 | ||
4350 | h->type = bfd_link_hash_defined; | |
4351 | ||
4352 | sec = bfd_get_section_by_name (output_bfd, secname); | |
4353 | if (sec == (asection *) NULL) | |
4354 | h->u.def.value = 0; | |
4355 | else | |
4356 | h->u.def.value = bfd_get_section_vma (output_bfd, sec); | |
4357 | ||
4358 | h->u.def.section = bfd_abs_section_ptr; | |
4359 | } | |
4360 | } | |
4361 | ||
4362 | /* | |
4363 | Create an absolute symbol with the given name with the value of the | |
4364 | address of the first byte after the end of the section named. | |
4365 | ||
4366 | If the symbol already exists, then do nothing. | |
4367 | */ | |
4368 | void | |
4369 | lang_abs_symbol_at_end_of (secname, name) | |
4370 | const char *secname; | |
4371 | const char *name; | |
4372 | { | |
4373 | struct bfd_link_hash_entry *h; | |
4374 | ||
4375 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); | |
4376 | if (h == (struct bfd_link_hash_entry *) NULL) | |
4377 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
4378 | ||
4379 | if (h->type == bfd_link_hash_new | |
4380 | || h->type == bfd_link_hash_undefined) | |
4381 | { | |
4382 | asection *sec; | |
4383 | ||
4384 | h->type = bfd_link_hash_defined; | |
4385 | ||
4386 | sec = bfd_get_section_by_name (output_bfd, secname); | |
4387 | if (sec == (asection *) NULL) | |
4388 | h->u.def.value = 0; | |
4389 | else | |
4390 | h->u.def.value = (bfd_get_section_vma (output_bfd, sec) | |
4cbfc3ac TW |
4391 | + bfd_section_size (output_bfd, sec) / |
4392 | bfd_octets_per_byte (output_bfd)); | |
252b5132 RH |
4393 | |
4394 | h->u.def.section = bfd_abs_section_ptr; | |
4395 | } | |
4396 | } | |
4397 | ||
4398 | void | |
4399 | lang_statement_append (list, element, field) | |
4400 | lang_statement_list_type * list; | |
4401 | lang_statement_union_type * element; | |
4402 | lang_statement_union_type ** field; | |
4403 | { | |
4404 | *(list->tail) = element; | |
4405 | list->tail = field; | |
4406 | } | |
4407 | ||
4408 | /* Set the output format type. -oformat overrides scripts. */ | |
4409 | ||
4410 | void | |
4411 | lang_add_output_format (format, big, little, from_script) | |
4412 | const char *format; | |
4413 | const char *big; | |
4414 | const char *little; | |
4415 | int from_script; | |
4416 | { | |
4417 | if (output_target == NULL || !from_script) | |
4418 | { | |
4419 | if (command_line.endian == ENDIAN_BIG | |
4420 | && big != NULL) | |
4421 | format = big; | |
4422 | else if (command_line.endian == ENDIAN_LITTLE | |
4423 | && little != NULL) | |
4424 | format = little; | |
4425 | ||
4426 | output_target = format; | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | /* Enter a group. This creates a new lang_group_statement, and sets | |
4431 | stat_ptr to build new statements within the group. */ | |
4432 | ||
4433 | void | |
4434 | lang_enter_group () | |
4435 | { | |
4436 | lang_group_statement_type *g; | |
4437 | ||
4438 | g = new_stat (lang_group_statement, stat_ptr); | |
4439 | lang_list_init (&g->children); | |
4440 | stat_ptr = &g->children; | |
4441 | } | |
4442 | ||
4443 | /* Leave a group. This just resets stat_ptr to start writing to the | |
4444 | regular list of statements again. Note that this will not work if | |
4445 | groups can occur inside anything else which can adjust stat_ptr, | |
4446 | but currently they can't. */ | |
4447 | ||
4448 | void | |
4449 | lang_leave_group () | |
4450 | { | |
4451 | stat_ptr = &statement_list; | |
4452 | } | |
4453 | ||
4454 | /* Add a new program header. This is called for each entry in a PHDRS | |
4455 | command in a linker script. */ | |
4456 | ||
4457 | void | |
4458 | lang_new_phdr (name, type, filehdr, phdrs, at, flags) | |
4459 | const char *name; | |
4460 | etree_type *type; | |
4461 | boolean filehdr; | |
4462 | boolean phdrs; | |
4463 | etree_type *at; | |
4464 | etree_type *flags; | |
4465 | { | |
4466 | struct lang_phdr *n, **pp; | |
4467 | ||
4468 | n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr)); | |
4469 | n->next = NULL; | |
4470 | n->name = name; | |
4471 | n->type = exp_get_value_int (type, 0, "program header type", | |
4472 | lang_final_phase_enum); | |
4473 | n->filehdr = filehdr; | |
4474 | n->phdrs = phdrs; | |
4475 | n->at = at; | |
4476 | n->flags = flags; | |
4477 | ||
4478 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4479 | ; | |
4480 | *pp = n; | |
4481 | } | |
4482 | ||
4483 | /* Record the program header information in the output BFD. FIXME: We | |
4484 | should not be calling an ELF specific function here. */ | |
4485 | ||
4486 | static void | |
4487 | lang_record_phdrs () | |
4488 | { | |
4489 | unsigned int alc; | |
4490 | asection **secs; | |
4491 | struct lang_output_section_phdr_list *last; | |
4492 | struct lang_phdr *l; | |
4493 | lang_statement_union_type *u; | |
4494 | ||
4495 | alc = 10; | |
4496 | secs = (asection **) xmalloc (alc * sizeof (asection *)); | |
4497 | last = NULL; | |
4498 | for (l = lang_phdr_list; l != NULL; l = l->next) | |
4499 | { | |
4500 | unsigned int c; | |
4501 | flagword flags; | |
4502 | bfd_vma at; | |
4503 | ||
4504 | c = 0; | |
4505 | for (u = lang_output_section_statement.head; | |
4506 | u != NULL; | |
4507 | u = u->output_section_statement.next) | |
4508 | { | |
4509 | lang_output_section_statement_type *os; | |
4510 | struct lang_output_section_phdr_list *pl; | |
4511 | ||
4512 | os = &u->output_section_statement; | |
4513 | ||
4514 | pl = os->phdrs; | |
4515 | if (pl != NULL) | |
4516 | last = pl; | |
4517 | else | |
4518 | { | |
4519 | if (os->sectype == noload_section | |
4520 | || os->bfd_section == NULL | |
4521 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
4522 | continue; | |
4523 | pl = last; | |
4524 | } | |
4525 | ||
4526 | if (os->bfd_section == NULL) | |
4527 | continue; | |
4528 | ||
4529 | for (; pl != NULL; pl = pl->next) | |
4530 | { | |
4531 | if (strcmp (pl->name, l->name) == 0) | |
4532 | { | |
4533 | if (c >= alc) | |
4534 | { | |
4535 | alc *= 2; | |
4536 | secs = ((asection **) | |
4537 | xrealloc (secs, alc * sizeof (asection *))); | |
4538 | } | |
4539 | secs[c] = os->bfd_section; | |
4540 | ++c; | |
4541 | pl->used = true; | |
4542 | } | |
4543 | } | |
4544 | } | |
4545 | ||
4546 | if (l->flags == NULL) | |
4547 | flags = 0; | |
4548 | else | |
4549 | flags = exp_get_vma (l->flags, 0, "phdr flags", | |
4550 | lang_final_phase_enum); | |
4551 | ||
4552 | if (l->at == NULL) | |
4553 | at = 0; | |
4554 | else | |
4555 | at = exp_get_vma (l->at, 0, "phdr load address", | |
4556 | lang_final_phase_enum); | |
4557 | ||
4558 | if (! bfd_record_phdr (output_bfd, l->type, | |
4559 | l->flags == NULL ? false : true, | |
4560 | flags, | |
4561 | l->at == NULL ? false : true, | |
4562 | at, l->filehdr, l->phdrs, c, secs)) | |
4563 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); | |
4564 | } | |
4565 | ||
4566 | free (secs); | |
4567 | ||
4568 | /* Make sure all the phdr assignments succeeded. */ | |
4569 | for (u = lang_output_section_statement.head; | |
4570 | u != NULL; | |
4571 | u = u->output_section_statement.next) | |
4572 | { | |
4573 | struct lang_output_section_phdr_list *pl; | |
4574 | ||
4575 | if (u->output_section_statement.bfd_section == NULL) | |
4576 | continue; | |
4577 | ||
4578 | for (pl = u->output_section_statement.phdrs; | |
4579 | pl != NULL; | |
4580 | pl = pl->next) | |
4581 | if (! pl->used && strcmp (pl->name, "NONE") != 0) | |
4582 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), | |
4583 | u->output_section_statement.name, pl->name); | |
4584 | } | |
4585 | } | |
4586 | ||
4587 | /* Record a list of sections which may not be cross referenced. */ | |
4588 | ||
4589 | void | |
4590 | lang_add_nocrossref (l) | |
4591 | struct lang_nocrossref *l; | |
4592 | { | |
4593 | struct lang_nocrossrefs *n; | |
4594 | ||
4595 | n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); | |
4596 | n->next = nocrossref_list; | |
4597 | n->list = l; | |
4598 | nocrossref_list = n; | |
4599 | ||
4600 | /* Set notice_all so that we get informed about all symbols. */ | |
4601 | link_info.notice_all = true; | |
4602 | } | |
4603 | \f | |
4604 | /* Overlay handling. We handle overlays with some static variables. */ | |
4605 | ||
4606 | /* The overlay virtual address. */ | |
4607 | static etree_type *overlay_vma; | |
4608 | ||
4609 | /* The overlay load address. */ | |
4610 | static etree_type *overlay_lma; | |
4611 | ||
4612 | /* Whether nocrossrefs is set for this overlay. */ | |
4613 | static int overlay_nocrossrefs; | |
4614 | ||
4615 | /* An expression for the maximum section size seen so far. */ | |
4616 | static etree_type *overlay_max; | |
4617 | ||
4618 | /* A list of all the sections in this overlay. */ | |
4619 | ||
4620 | struct overlay_list | |
4621 | { | |
4622 | struct overlay_list *next; | |
4623 | lang_output_section_statement_type *os; | |
4624 | }; | |
4625 | ||
4626 | static struct overlay_list *overlay_list; | |
4627 | ||
4628 | /* Start handling an overlay. */ | |
4629 | ||
4630 | void | |
4631 | lang_enter_overlay (vma_expr, lma_expr, nocrossrefs) | |
4632 | etree_type *vma_expr; | |
4633 | etree_type *lma_expr; | |
4634 | int nocrossrefs; | |
4635 | { | |
4636 | /* The grammar should prevent nested overlays from occurring. */ | |
4637 | ASSERT (overlay_vma == NULL | |
4638 | && overlay_lma == NULL | |
4639 | && overlay_list == NULL | |
4640 | && overlay_max == NULL); | |
4641 | ||
4642 | overlay_vma = vma_expr; | |
4643 | overlay_lma = lma_expr; | |
4644 | overlay_nocrossrefs = nocrossrefs; | |
4645 | } | |
4646 | ||
4647 | /* Start a section in an overlay. We handle this by calling | |
4648 | lang_enter_output_section_statement with the correct VMA and LMA. */ | |
4649 | ||
4650 | void | |
4651 | lang_enter_overlay_section (name) | |
4652 | const char *name; | |
4653 | { | |
4654 | struct overlay_list *n; | |
4655 | etree_type *size; | |
4656 | ||
4657 | lang_enter_output_section_statement (name, overlay_vma, normal_section, | |
4658 | 0, 0, 0, overlay_lma); | |
4659 | ||
4660 | /* If this is the first section, then base the VMA and LMA of future | |
4661 | sections on this one. This will work correctly even if `.' is | |
4662 | used in the addresses. */ | |
4663 | if (overlay_list == NULL) | |
4664 | { | |
4665 | overlay_vma = exp_nameop (ADDR, name); | |
4666 | overlay_lma = exp_nameop (LOADADDR, name); | |
4667 | } | |
4668 | ||
4669 | /* Remember the section. */ | |
4670 | n = (struct overlay_list *) xmalloc (sizeof *n); | |
4671 | n->os = current_section; | |
4672 | n->next = overlay_list; | |
4673 | overlay_list = n; | |
4674 | ||
4675 | size = exp_nameop (SIZEOF, name); | |
4676 | ||
4677 | /* Adjust the LMA for the next section. */ | |
4678 | overlay_lma = exp_binop ('+', overlay_lma, size); | |
4679 | ||
4680 | /* Arrange to work out the maximum section end address. */ | |
4681 | if (overlay_max == NULL) | |
4682 | overlay_max = size; | |
4683 | else | |
4684 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
4685 | } | |
4686 | ||
4687 | /* Finish a section in an overlay. There isn't any special to do | |
4688 | here. */ | |
4689 | ||
4690 | void | |
4691 | lang_leave_overlay_section (fill, phdrs) | |
4692 | bfd_vma fill; | |
4693 | struct lang_output_section_phdr_list *phdrs; | |
4694 | { | |
4695 | const char *name; | |
4696 | char *clean, *s2; | |
4697 | const char *s1; | |
4698 | char *buf; | |
4699 | ||
4700 | name = current_section->name; | |
4701 | ||
562d3460 TW |
4702 | lang_leave_output_section_statement (fill, "*default*", |
4703 | phdrs, "*default*"); | |
252b5132 RH |
4704 | |
4705 | /* Define the magic symbols. */ | |
4706 | ||
4707 | clean = xmalloc (strlen (name) + 1); | |
4708 | s2 = clean; | |
4709 | for (s1 = name; *s1 != '\0'; s1++) | |
4710 | if (isalnum ((unsigned char) *s1) || *s1 == '_') | |
4711 | *s2++ = *s1; | |
4712 | *s2 = '\0'; | |
4713 | ||
4714 | buf = xmalloc (strlen (clean) + sizeof "__load_start_"); | |
4715 | sprintf (buf, "__load_start_%s", clean); | |
4716 | lang_add_assignment (exp_assop ('=', buf, | |
4717 | exp_nameop (LOADADDR, name))); | |
4718 | ||
4719 | buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); | |
4720 | sprintf (buf, "__load_stop_%s", clean); | |
4721 | lang_add_assignment (exp_assop ('=', buf, | |
4722 | exp_binop ('+', | |
4723 | exp_nameop (LOADADDR, name), | |
4724 | exp_nameop (SIZEOF, name)))); | |
4725 | ||
4726 | free (clean); | |
4727 | } | |
4728 | ||
4729 | /* Finish an overlay. If there are any overlay wide settings, this | |
4730 | looks through all the sections in the overlay and sets them. */ | |
4731 | ||
4732 | void | |
562d3460 | 4733 | lang_leave_overlay (fill, memspec, phdrs, lma_memspec) |
252b5132 RH |
4734 | bfd_vma fill; |
4735 | const char *memspec; | |
4736 | struct lang_output_section_phdr_list *phdrs; | |
562d3460 | 4737 | const char *lma_memspec; |
252b5132 RH |
4738 | { |
4739 | lang_memory_region_type *region; | |
562d3460 | 4740 | lang_memory_region_type *lma_region; |
252b5132 RH |
4741 | struct overlay_list *l; |
4742 | struct lang_nocrossref *nocrossref; | |
4743 | ||
4744 | if (memspec == NULL) | |
4745 | region = NULL; | |
4746 | else | |
4747 | region = lang_memory_region_lookup (memspec); | |
4748 | ||
562d3460 TW |
4749 | if (lma_memspec == NULL) |
4750 | lma_region = NULL; | |
4751 | else | |
4752 | lma_region = lang_memory_region_lookup (lma_memspec); | |
4753 | ||
252b5132 RH |
4754 | nocrossref = NULL; |
4755 | ||
4756 | l = overlay_list; | |
4757 | while (l != NULL) | |
4758 | { | |
4759 | struct overlay_list *next; | |
4760 | ||
4761 | if (fill != 0 && l->os->fill == 0) | |
4762 | l->os->fill = fill; | |
4763 | if (region != NULL && l->os->region == NULL) | |
4764 | l->os->region = region; | |
562d3460 TW |
4765 | if (lma_region != NULL && l->os->lma_region == NULL) |
4766 | l->os->lma_region = lma_region; | |
252b5132 RH |
4767 | if (phdrs != NULL && l->os->phdrs == NULL) |
4768 | l->os->phdrs = phdrs; | |
4769 | ||
4770 | if (overlay_nocrossrefs) | |
4771 | { | |
4772 | struct lang_nocrossref *nc; | |
4773 | ||
4774 | nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); | |
4775 | nc->name = l->os->name; | |
4776 | nc->next = nocrossref; | |
4777 | nocrossref = nc; | |
4778 | } | |
4779 | ||
4780 | next = l->next; | |
4781 | free (l); | |
4782 | l = next; | |
4783 | } | |
4784 | ||
4785 | if (nocrossref != NULL) | |
4786 | lang_add_nocrossref (nocrossref); | |
4787 | ||
4788 | /* Update . for the end of the overlay. */ | |
4789 | lang_add_assignment (exp_assop ('=', ".", | |
4790 | exp_binop ('+', overlay_vma, overlay_max))); | |
4791 | ||
4792 | overlay_vma = NULL; | |
4793 | overlay_lma = NULL; | |
4794 | overlay_nocrossrefs = 0; | |
4795 | overlay_list = NULL; | |
4796 | overlay_max = NULL; | |
4797 | } | |
4798 | \f | |
4799 | /* Version handling. This is only useful for ELF. */ | |
4800 | ||
4801 | /* This global variable holds the version tree that we build. */ | |
4802 | ||
4803 | struct bfd_elf_version_tree *lang_elf_version_info; | |
4804 | ||
4805 | static int | |
4806 | lang_vers_match_lang_c (expr, sym) | |
4807 | struct bfd_elf_version_expr *expr; | |
4808 | const char *sym; | |
4809 | { | |
4810 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4811 | return 1; | |
4812 | return fnmatch (expr->pattern, sym, 0) == 0; | |
4813 | } | |
4814 | ||
4815 | static int | |
4816 | lang_vers_match_lang_cplusplus (expr, sym) | |
4817 | struct bfd_elf_version_expr *expr; | |
4818 | const char *sym; | |
4819 | { | |
4820 | char *alt_sym; | |
4821 | int result; | |
4822 | ||
4823 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4824 | return 1; | |
4825 | ||
4826 | alt_sym = cplus_demangle(sym, /* DMGL_NO_TPARAMS */ 0); | |
4827 | if (!alt_sym) | |
4828 | { | |
4829 | /* cplus_demangle (also) returns NULL when it is not a C++ symbol. | |
4830 | Should we early out false in this case? */ | |
4831 | result = fnmatch (expr->pattern, sym, 0) == 0; | |
4832 | } | |
4833 | else | |
4834 | { | |
4835 | result = fnmatch (expr->pattern, alt_sym, 0) == 0; | |
4836 | free (alt_sym); | |
4837 | } | |
4838 | ||
4839 | return result; | |
4840 | } | |
4841 | ||
4842 | static int | |
4843 | lang_vers_match_lang_java (expr, sym) | |
4844 | struct bfd_elf_version_expr *expr; | |
4845 | const char *sym; | |
4846 | { | |
4847 | char *alt_sym; | |
4848 | int result; | |
4849 | ||
4850 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4851 | return 1; | |
4852 | ||
4853 | alt_sym = cplus_demangle(sym, DMGL_JAVA); | |
4854 | if (!alt_sym) | |
4855 | { | |
4856 | /* cplus_demangle (also) returns NULL when it is not a Java symbol. | |
4857 | Should we early out false in this case? */ | |
4858 | result = fnmatch (expr->pattern, sym, 0) == 0; | |
4859 | } | |
4860 | else | |
4861 | { | |
4862 | result = fnmatch (expr->pattern, alt_sym, 0) == 0; | |
4863 | free (alt_sym); | |
4864 | } | |
4865 | ||
4866 | return result; | |
4867 | } | |
4868 | ||
4869 | /* This is called for each variable name or match expression. */ | |
4870 | ||
4871 | struct bfd_elf_version_expr * | |
4872 | lang_new_vers_regex (orig, new, lang) | |
4873 | struct bfd_elf_version_expr *orig; | |
4874 | const char *new; | |
4875 | const char *lang; | |
4876 | { | |
4877 | struct bfd_elf_version_expr *ret; | |
4878 | ||
4879 | ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); | |
4880 | ret->next = orig; | |
4881 | ret->pattern = new; | |
4882 | ||
4883 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
4884 | ret->match = lang_vers_match_lang_c; | |
4885 | else if (strcasecmp (lang, "C++") == 0) | |
4886 | ret->match = lang_vers_match_lang_cplusplus; | |
4887 | else if (strcasecmp (lang, "Java") == 0) | |
4888 | ret->match = lang_vers_match_lang_java; | |
4889 | else | |
4890 | { | |
4891 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
4892 | lang); | |
4893 | ret->match = lang_vers_match_lang_c; | |
4894 | } | |
4895 | ||
4896 | return ret; | |
4897 | } | |
4898 | ||
4899 | /* This is called for each set of variable names and match | |
4900 | expressions. */ | |
4901 | ||
4902 | struct bfd_elf_version_tree * | |
4903 | lang_new_vers_node (globals, locals) | |
4904 | struct bfd_elf_version_expr *globals; | |
4905 | struct bfd_elf_version_expr *locals; | |
4906 | { | |
4907 | struct bfd_elf_version_tree *ret; | |
4908 | ||
4909 | ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret); | |
4910 | ret->next = NULL; | |
4911 | ret->name = NULL; | |
4912 | ret->vernum = 0; | |
4913 | ret->globals = globals; | |
4914 | ret->locals = locals; | |
4915 | ret->deps = NULL; | |
4916 | ret->name_indx = (unsigned int) -1; | |
4917 | ret->used = 0; | |
4918 | return ret; | |
4919 | } | |
4920 | ||
4921 | /* This static variable keeps track of version indices. */ | |
4922 | ||
4923 | static int version_index; | |
4924 | ||
4925 | /* This is called when we know the name and dependencies of the | |
4926 | version. */ | |
4927 | ||
4928 | void | |
4929 | lang_register_vers_node (name, version, deps) | |
4930 | const char *name; | |
4931 | struct bfd_elf_version_tree *version; | |
4932 | struct bfd_elf_version_deps *deps; | |
4933 | { | |
4934 | struct bfd_elf_version_tree *t, **pp; | |
4935 | struct bfd_elf_version_expr *e1; | |
4936 | ||
4937 | /* Make sure this node has a unique name. */ | |
4938 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4939 | if (strcmp (t->name, name) == 0) | |
4940 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
4941 | ||
4942 | /* Check the global and local match names, and make sure there | |
4943 | aren't any duplicates. */ | |
4944 | ||
4945 | for (e1 = version->globals; e1 != NULL; e1 = e1->next) | |
4946 | { | |
4947 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4948 | { | |
4949 | struct bfd_elf_version_expr *e2; | |
4950 | ||
4951 | for (e2 = t->locals; e2 != NULL; e2 = e2->next) | |
4952 | if (strcmp (e1->pattern, e2->pattern) == 0) | |
4953 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
4954 | e1->pattern); | |
4955 | } | |
4956 | } | |
4957 | ||
4958 | for (e1 = version->locals; e1 != NULL; e1 = e1->next) | |
4959 | { | |
4960 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4961 | { | |
4962 | struct bfd_elf_version_expr *e2; | |
4963 | ||
4964 | for (e2 = t->globals; e2 != NULL; e2 = e2->next) | |
4965 | if (strcmp (e1->pattern, e2->pattern) == 0) | |
4966 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
4967 | e1->pattern); | |
4968 | } | |
4969 | } | |
4970 | ||
4971 | version->deps = deps; | |
4972 | version->name = name; | |
4973 | ++version_index; | |
4974 | version->vernum = version_index; | |
4975 | ||
4976 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) | |
4977 | ; | |
4978 | *pp = version; | |
4979 | } | |
4980 | ||
4981 | /* This is called when we see a version dependency. */ | |
4982 | ||
4983 | struct bfd_elf_version_deps * | |
4984 | lang_add_vers_depend (list, name) | |
4985 | struct bfd_elf_version_deps *list; | |
4986 | const char *name; | |
4987 | { | |
4988 | struct bfd_elf_version_deps *ret; | |
4989 | struct bfd_elf_version_tree *t; | |
4990 | ||
4991 | ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); | |
4992 | ret->next = list; | |
4993 | ||
4994 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4995 | { | |
4996 | if (strcmp (t->name, name) == 0) | |
4997 | { | |
4998 | ret->version_needed = t; | |
4999 | return ret; | |
5000 | } | |
5001 | } | |
5002 | ||
5003 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
5004 | ||
5005 | return ret; | |
5006 | } | |
5007 | ||
5008 | static void | |
5009 | lang_do_version_exports_section () | |
5010 | { | |
5011 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
5012 | ||
5013 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
5014 | { | |
5015 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
5016 | char *contents, *p; | |
5017 | bfd_size_type len; | |
5018 | ||
5019 | if (sec == NULL) | |
5020 | continue; | |
5021 | ||
5022 | len = bfd_section_size (is->the_bfd, sec); | |
5023 | contents = xmalloc (len); | |
5024 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) | |
5025 | einfo (_("%X%P: unable to read .exports section contents"), sec); | |
5026 | ||
5027 | p = contents; | |
5028 | while (p < contents+len) | |
5029 | { | |
5030 | greg = lang_new_vers_regex (greg, p, NULL); | |
5031 | p = strchr (p, '\0') + 1; | |
5032 | } | |
5033 | ||
5034 | /* Do not free the contents, as we used them creating the regex. */ | |
5035 | ||
5036 | /* Do not include this section in the link. */ | |
5037 | bfd_set_section_flags (is->the_bfd, sec, | |
5038 | bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE); | |
5039 | } | |
5040 | ||
5041 | lreg = lang_new_vers_regex (NULL, "*", NULL); | |
5042 | lang_register_vers_node (command_line.version_exports_section, | |
5043 | lang_new_vers_node (greg, lreg), NULL); | |
5044 | } |