Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
a2b64bed | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
e5caa5e0 | 3 | 2001, 2002, 2003, 2004 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
53b2a62f | 6 | This file is part of GLD, the Gnu Linker. |
252b5132 | 7 | |
53b2a62f NC |
8 | GLD is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
53b2a62f NC |
13 | GLD is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
53b2a62f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GLD; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libiberty.h" | |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "obstack.h" |
28 | #include "bfdlink.h" | |
29 | ||
30 | #include "ld.h" | |
31 | #include "ldmain.h" | |
252b5132 RH |
32 | #include "ldexp.h" |
33 | #include "ldlang.h" | |
df2a7313 | 34 | #include <ldgram.h> |
252b5132 RH |
35 | #include "ldlex.h" |
36 | #include "ldmisc.h" | |
37 | #include "ldctor.h" | |
38 | #include "ldfile.h" | |
b71e2778 | 39 | #include "ldemul.h" |
252b5132 RH |
40 | #include "fnmatch.h" |
41 | #include "demangle.h" | |
108ba305 | 42 | #include "hashtab.h" |
252b5132 | 43 | |
7abb6dea | 44 | #ifndef offsetof |
cf888e70 | 45 | #define offsetof(TYPE, MEMBER) ((size_t) & (((TYPE*) 0)->MEMBER)) |
7abb6dea AM |
46 | #endif |
47 | ||
cf888e70 | 48 | /* Locals variables. */ |
252b5132 RH |
49 | static struct obstack stat_obstack; |
50 | ||
51 | #define obstack_chunk_alloc xmalloc | |
52 | #define obstack_chunk_free free | |
5f992e62 | 53 | static const char *startup_file; |
252b5132 | 54 | static lang_statement_list_type input_file_chain; |
b34976b6 | 55 | static bfd_boolean placed_commons = FALSE; |
252b5132 | 56 | static lang_output_section_statement_type *default_common_section; |
b34976b6 | 57 | static bfd_boolean map_option_f; |
252b5132 RH |
58 | static bfd_vma print_dot; |
59 | static lang_input_statement_type *first_file; | |
5f992e62 AM |
60 | static const char *current_target; |
61 | static const char *output_target; | |
252b5132 RH |
62 | static lang_statement_list_type statement_list; |
63 | static struct lang_phdr *lang_phdr_list; | |
420e579c | 64 | static struct bfd_hash_table lang_definedness_table; |
252b5132 | 65 | |
cf888e70 | 66 | /* Forward declarations. */ |
1579bae1 AM |
67 | static void exp_init_os (etree_type *); |
68 | static bfd_boolean wildcardp (const char *); | |
69 | static lang_input_statement_type *lookup_name (const char *); | |
70 | static bfd_boolean load_symbols (lang_input_statement_type *, | |
71 | lang_statement_list_type *); | |
420e579c HPN |
72 | static struct bfd_hash_entry *lang_definedness_newfunc |
73 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
1579bae1 AM |
74 | static void insert_undefined (const char *); |
75 | static void print_statement (lang_statement_union_type *, | |
76 | lang_output_section_statement_type *); | |
77 | static void print_statement_list (lang_statement_union_type *, | |
78 | lang_output_section_statement_type *); | |
79 | static void print_statements (void); | |
80 | static bfd_boolean lang_one_common (struct bfd_link_hash_entry *, void *); | |
81 | static void lang_record_phdrs (void); | |
82 | static void lang_do_version_exports_section (void); | |
83 | ||
84 | typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *, | |
85 | asection *, lang_input_statement_type *, void *); | |
5f992e62 | 86 | |
cf888e70 | 87 | /* Exported variables. */ |
252b5132 | 88 | lang_output_section_statement_type *abs_output_section; |
aea4bd9d | 89 | lang_statement_list_type lang_output_section_statement; |
252b5132 | 90 | lang_statement_list_type *stat_ptr = &statement_list; |
87f2a346 | 91 | lang_statement_list_type file_chain = { NULL, NULL }; |
e3e942e9 | 92 | struct bfd_sym_chain entry_symbol = { NULL, NULL }; |
1e281515 | 93 | const char *entry_section = ".text"; |
b34976b6 AM |
94 | bfd_boolean entry_from_cmdline; |
95 | bfd_boolean lang_has_input_file = FALSE; | |
96 | bfd_boolean had_output_filename = FALSE; | |
97 | bfd_boolean lang_float_flag = FALSE; | |
98 | bfd_boolean delete_output_file_on_failure = FALSE; | |
252b5132 | 99 | struct lang_nocrossrefs *nocrossref_list; |
577a0623 | 100 | struct unique_sections *unique_section_list; |
e3f2db7f | 101 | static bfd_boolean ldlang_sysrooted_script = FALSE; |
420e579c | 102 | int lang_statement_iteration = 0; |
252b5132 RH |
103 | |
104 | etree_type *base; /* Relocation base - or null */ | |
105 | ||
d1778b88 | 106 | #define new_stat(x, y) \ |
1579bae1 | 107 | (x##_type *) new_statement (x##_enum, sizeof (x##_type), y) |
252b5132 | 108 | |
d1778b88 AM |
109 | #define outside_section_address(q) \ |
110 | ((q)->output_offset + (q)->output_section->vma) | |
252b5132 | 111 | |
d1778b88 AM |
112 | #define outside_symbol_address(q) \ |
113 | ((q)->value + outside_section_address (q->section)) | |
252b5132 RH |
114 | |
115 | #define SECTION_NAME_MAP_LENGTH (16) | |
116 | ||
1579bae1 AM |
117 | void * |
118 | stat_alloc (size_t size) | |
252b5132 RH |
119 | { |
120 | return obstack_alloc (&stat_obstack, size); | |
121 | } | |
122 | ||
b34976b6 | 123 | bfd_boolean |
1579bae1 | 124 | unique_section_p (const char *secnam) |
577a0623 AM |
125 | { |
126 | struct unique_sections *unam; | |
127 | ||
128 | for (unam = unique_section_list; unam; unam = unam->next) | |
129 | if (wildcardp (unam->name) | |
130 | ? fnmatch (unam->name, secnam, 0) == 0 | |
131 | : strcmp (unam->name, secnam) == 0) | |
132 | { | |
b34976b6 | 133 | return TRUE; |
577a0623 AM |
134 | } |
135 | ||
b34976b6 | 136 | return FALSE; |
577a0623 AM |
137 | } |
138 | ||
08da4cac | 139 | /* Generic traversal routines for finding matching sections. */ |
4dec4d4e RH |
140 | |
141 | static void | |
1579bae1 AM |
142 | walk_wild_section (lang_wild_statement_type *ptr, |
143 | lang_input_statement_type *file, | |
144 | callback_t callback, | |
145 | void *data) | |
4dec4d4e | 146 | { |
b6bf44ba AM |
147 | asection *s; |
148 | ||
149 | if (file->just_syms_flag) | |
150 | return; | |
151 | ||
152 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
4dec4d4e | 153 | { |
b6bf44ba AM |
154 | struct wildcard_list *sec; |
155 | ||
156 | sec = ptr->section_list; | |
2181f54f AM |
157 | if (sec == NULL) |
158 | (*callback) (ptr, sec, s, file, data); | |
159 | ||
160 | while (sec != NULL) | |
08da4cac | 161 | { |
b34976b6 | 162 | bfd_boolean skip = FALSE; |
2181f54f AM |
163 | struct name_list *list_tmp; |
164 | ||
165 | /* Don't process sections from files which were | |
166 | excluded. */ | |
167 | for (list_tmp = sec->spec.exclude_name_list; | |
168 | list_tmp; | |
169 | list_tmp = list_tmp->next) | |
170 | { | |
171 | if (wildcardp (list_tmp->name)) | |
172 | skip = fnmatch (list_tmp->name, file->filename, 0) == 0; | |
173 | else | |
174 | skip = strcmp (list_tmp->name, file->filename) == 0; | |
4dec4d4e | 175 | |
34efb449 AO |
176 | /* If this file is part of an archive, and the archive is |
177 | excluded, exclude this file. */ | |
178 | if (! skip && file->the_bfd != NULL | |
179 | && file->the_bfd->my_archive != NULL | |
180 | && file->the_bfd->my_archive->filename != NULL) | |
181 | { | |
182 | if (wildcardp (list_tmp->name)) | |
183 | skip = fnmatch (list_tmp->name, | |
184 | file->the_bfd->my_archive->filename, | |
185 | 0) == 0; | |
186 | else | |
187 | skip = strcmp (list_tmp->name, | |
188 | file->the_bfd->my_archive->filename) == 0; | |
189 | } | |
190 | ||
2181f54f AM |
191 | if (skip) |
192 | break; | |
193 | } | |
194 | ||
195 | if (!skip && sec->spec.name != NULL) | |
b6bf44ba | 196 | { |
2181f54f AM |
197 | const char *sname = bfd_get_section_name (file->the_bfd, s); |
198 | ||
199 | if (wildcardp (sec->spec.name)) | |
200 | skip = fnmatch (sec->spec.name, sname, 0) != 0; | |
201 | else | |
202 | skip = strcmp (sec->spec.name, sname) != 0; | |
b6bf44ba | 203 | } |
4dec4d4e | 204 | |
b6bf44ba AM |
205 | if (!skip) |
206 | (*callback) (ptr, sec, s, file, data); | |
4dec4d4e | 207 | |
2181f54f | 208 | sec = sec->next; |
4dec4d4e RH |
209 | } |
210 | } | |
211 | } | |
212 | ||
213 | /* Handle a wild statement for a single file F. */ | |
214 | ||
215 | static void | |
1579bae1 AM |
216 | walk_wild_file (lang_wild_statement_type *s, |
217 | lang_input_statement_type *f, | |
218 | callback_t callback, | |
219 | void *data) | |
4dec4d4e RH |
220 | { |
221 | if (f->the_bfd == NULL | |
222 | || ! bfd_check_format (f->the_bfd, bfd_archive)) | |
b6bf44ba | 223 | walk_wild_section (s, f, callback, data); |
4dec4d4e RH |
224 | else |
225 | { | |
226 | bfd *member; | |
227 | ||
228 | /* This is an archive file. We must map each member of the | |
229 | archive separately. */ | |
1579bae1 | 230 | member = bfd_openr_next_archived_file (f->the_bfd, NULL); |
4dec4d4e RH |
231 | while (member != NULL) |
232 | { | |
233 | /* When lookup_name is called, it will call the add_symbols | |
234 | entry point for the archive. For each element of the | |
235 | archive which is included, BFD will call ldlang_add_file, | |
236 | which will set the usrdata field of the member to the | |
237 | lang_input_statement. */ | |
238 | if (member->usrdata != NULL) | |
239 | { | |
1579bae1 | 240 | walk_wild_section (s, member->usrdata, callback, data); |
4dec4d4e RH |
241 | } |
242 | ||
243 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | static void | |
1579bae1 | 249 | walk_wild (lang_wild_statement_type *s, callback_t callback, void *data) |
4dec4d4e | 250 | { |
b6bf44ba AM |
251 | const char *file_spec = s->filename; |
252 | ||
253 | if (file_spec == NULL) | |
4dec4d4e RH |
254 | { |
255 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 256 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 257 | { |
b6bf44ba | 258 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
259 | } |
260 | } | |
b6bf44ba | 261 | else if (wildcardp (file_spec)) |
4dec4d4e | 262 | { |
e50d8076 | 263 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 264 | { |
b6bf44ba AM |
265 | if (fnmatch (file_spec, f->filename, FNM_FILE_NAME) == 0) |
266 | walk_wild_file (s, f, callback, data); | |
4dec4d4e RH |
267 | } |
268 | } | |
269 | else | |
270 | { | |
e50d8076 NC |
271 | lang_input_statement_type *f; |
272 | ||
4dec4d4e | 273 | /* Perform the iteration over a single file. */ |
b6bf44ba | 274 | f = lookup_name (file_spec); |
6770ec8c | 275 | if (f) |
b6bf44ba | 276 | walk_wild_file (s, f, callback, data); |
4dec4d4e | 277 | } |
5f992e62 AM |
278 | } |
279 | ||
08da4cac KH |
280 | /* lang_for_each_statement walks the parse tree and calls the provided |
281 | function for each node. */ | |
252b5132 RH |
282 | |
283 | static void | |
1579bae1 AM |
284 | lang_for_each_statement_worker (void (*func) (lang_statement_union_type *), |
285 | lang_statement_union_type *s) | |
252b5132 | 286 | { |
1579bae1 | 287 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
288 | { |
289 | func (s); | |
290 | ||
291 | switch (s->header.type) | |
292 | { | |
293 | case lang_constructors_statement_enum: | |
294 | lang_for_each_statement_worker (func, constructor_list.head); | |
295 | break; | |
296 | case lang_output_section_statement_enum: | |
297 | lang_for_each_statement_worker | |
298 | (func, | |
299 | s->output_section_statement.children.head); | |
300 | break; | |
301 | case lang_wild_statement_enum: | |
302 | lang_for_each_statement_worker | |
303 | (func, | |
304 | s->wild_statement.children.head); | |
305 | break; | |
306 | case lang_group_statement_enum: | |
307 | lang_for_each_statement_worker (func, | |
308 | s->group_statement.children.head); | |
309 | break; | |
310 | case lang_data_statement_enum: | |
311 | case lang_reloc_statement_enum: | |
312 | case lang_object_symbols_statement_enum: | |
313 | case lang_output_statement_enum: | |
314 | case lang_target_statement_enum: | |
315 | case lang_input_section_enum: | |
316 | case lang_input_statement_enum: | |
317 | case lang_assignment_statement_enum: | |
318 | case lang_padding_statement_enum: | |
319 | case lang_address_statement_enum: | |
320 | case lang_fill_statement_enum: | |
321 | break; | |
322 | default: | |
323 | FAIL (); | |
324 | break; | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | void | |
1579bae1 | 330 | lang_for_each_statement (void (*func) (lang_statement_union_type *)) |
252b5132 | 331 | { |
08da4cac | 332 | lang_for_each_statement_worker (func, statement_list.head); |
252b5132 RH |
333 | } |
334 | ||
335 | /*----------------------------------------------------------------------*/ | |
08da4cac | 336 | |
252b5132 | 337 | void |
1579bae1 | 338 | lang_list_init (lang_statement_list_type *list) |
252b5132 | 339 | { |
1579bae1 | 340 | list->head = NULL; |
252b5132 RH |
341 | list->tail = &list->head; |
342 | } | |
343 | ||
08da4cac | 344 | /* Build a new statement node for the parse tree. */ |
252b5132 | 345 | |
08da4cac | 346 | static lang_statement_union_type * |
1579bae1 AM |
347 | new_statement (enum statement_enum type, |
348 | size_t size, | |
349 | lang_statement_list_type *list) | |
252b5132 | 350 | { |
1579bae1 | 351 | lang_statement_union_type *new; |
252b5132 | 352 | |
1579bae1 | 353 | new = stat_alloc (size); |
252b5132 | 354 | new->header.type = type; |
1579bae1 | 355 | new->header.next = NULL; |
252b5132 RH |
356 | lang_statement_append (list, new, &new->header.next); |
357 | return new; | |
358 | } | |
359 | ||
08da4cac KH |
360 | /* Build a new input file node for the language. There are several |
361 | ways in which we treat an input file, eg, we only look at symbols, | |
362 | or prefix it with a -l etc. | |
252b5132 | 363 | |
08da4cac | 364 | We can be supplied with requests for input files more than once; |
396a2467 | 365 | they may, for example be split over several lines like foo.o(.text) |
d1778b88 | 366 | foo.o(.data) etc, so when asked for a file we check that we haven't |
08da4cac | 367 | got it already so we don't duplicate the bfd. */ |
252b5132 | 368 | |
252b5132 | 369 | static lang_input_statement_type * |
1579bae1 AM |
370 | new_afile (const char *name, |
371 | lang_input_file_enum_type file_type, | |
372 | const char *target, | |
373 | bfd_boolean add_to_list) | |
252b5132 RH |
374 | { |
375 | lang_input_statement_type *p; | |
376 | ||
377 | if (add_to_list) | |
378 | p = new_stat (lang_input_statement, stat_ptr); | |
379 | else | |
380 | { | |
1579bae1 | 381 | p = stat_alloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
382 | p->header.next = NULL; |
383 | } | |
384 | ||
b34976b6 | 385 | lang_has_input_file = TRUE; |
252b5132 | 386 | p->target = target; |
e3f2db7f | 387 | p->sysrooted = FALSE; |
252b5132 RH |
388 | switch (file_type) |
389 | { | |
390 | case lang_input_file_is_symbols_only_enum: | |
391 | p->filename = name; | |
b34976b6 AM |
392 | p->is_archive = FALSE; |
393 | p->real = TRUE; | |
252b5132 | 394 | p->local_sym_name = name; |
b34976b6 AM |
395 | p->just_syms_flag = TRUE; |
396 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
397 | break; |
398 | case lang_input_file_is_fake_enum: | |
399 | p->filename = name; | |
b34976b6 AM |
400 | p->is_archive = FALSE; |
401 | p->real = FALSE; | |
252b5132 | 402 | p->local_sym_name = name; |
b34976b6 AM |
403 | p->just_syms_flag = FALSE; |
404 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
405 | break; |
406 | case lang_input_file_is_l_enum: | |
b34976b6 | 407 | p->is_archive = TRUE; |
252b5132 | 408 | p->filename = name; |
b34976b6 | 409 | p->real = TRUE; |
1579bae1 | 410 | p->local_sym_name = concat ("-l", name, NULL); |
b34976b6 AM |
411 | p->just_syms_flag = FALSE; |
412 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
413 | break; |
414 | case lang_input_file_is_marker_enum: | |
415 | p->filename = name; | |
b34976b6 AM |
416 | p->is_archive = FALSE; |
417 | p->real = FALSE; | |
252b5132 | 418 | p->local_sym_name = name; |
b34976b6 AM |
419 | p->just_syms_flag = FALSE; |
420 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
421 | break; |
422 | case lang_input_file_is_search_file_enum: | |
e3f2db7f | 423 | p->sysrooted = ldlang_sysrooted_script; |
252b5132 | 424 | p->filename = name; |
b34976b6 AM |
425 | p->is_archive = FALSE; |
426 | p->real = TRUE; | |
252b5132 | 427 | p->local_sym_name = name; |
b34976b6 AM |
428 | p->just_syms_flag = FALSE; |
429 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
430 | break; |
431 | case lang_input_file_is_file_enum: | |
432 | p->filename = name; | |
b34976b6 AM |
433 | p->is_archive = FALSE; |
434 | p->real = TRUE; | |
252b5132 | 435 | p->local_sym_name = name; |
b34976b6 AM |
436 | p->just_syms_flag = FALSE; |
437 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
438 | break; |
439 | default: | |
440 | FAIL (); | |
441 | } | |
1579bae1 AM |
442 | p->the_bfd = NULL; |
443 | p->asymbols = NULL; | |
444 | p->next_real_file = NULL; | |
445 | p->next = NULL; | |
252b5132 RH |
446 | p->symbol_count = 0; |
447 | p->dynamic = config.dynamic_link; | |
4a43e768 | 448 | p->as_needed = as_needed; |
252b5132 | 449 | p->whole_archive = whole_archive; |
b34976b6 | 450 | p->loaded = FALSE; |
252b5132 RH |
451 | lang_statement_append (&input_file_chain, |
452 | (lang_statement_union_type *) p, | |
453 | &p->next_real_file); | |
454 | return p; | |
455 | } | |
456 | ||
457 | lang_input_statement_type * | |
1579bae1 AM |
458 | lang_add_input_file (const char *name, |
459 | lang_input_file_enum_type file_type, | |
460 | const char *target) | |
252b5132 | 461 | { |
b34976b6 AM |
462 | lang_has_input_file = TRUE; |
463 | return new_afile (name, file_type, target, TRUE); | |
252b5132 RH |
464 | } |
465 | ||
08da4cac KH |
466 | /* Build enough state so that the parser can build its tree. */ |
467 | ||
252b5132 | 468 | void |
1579bae1 | 469 | lang_init (void) |
252b5132 RH |
470 | { |
471 | obstack_begin (&stat_obstack, 1000); | |
472 | ||
473 | stat_ptr = &statement_list; | |
474 | ||
475 | lang_list_init (stat_ptr); | |
476 | ||
477 | lang_list_init (&input_file_chain); | |
478 | lang_list_init (&lang_output_section_statement); | |
479 | lang_list_init (&file_chain); | |
1579bae1 AM |
480 | first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum, |
481 | NULL); | |
08da4cac KH |
482 | abs_output_section = |
483 | lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); | |
252b5132 RH |
484 | |
485 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
420e579c HPN |
486 | |
487 | /* The value "3" is ad-hoc, somewhat related to the expected number of | |
488 | DEFINED expressions in a linker script. For most default linker | |
489 | scripts, there are none. Why a hash table then? Well, it's somewhat | |
490 | simpler to re-use working machinery than using a linked list in terms | |
491 | of code-complexity here in ld, besides the initialization which just | |
492 | looks like other code here. */ | |
493 | if (bfd_hash_table_init_n (&lang_definedness_table, | |
494 | lang_definedness_newfunc, 3) != TRUE) | |
495 | einfo (_("%P%F: out of memory during initialization")); | |
496 | ||
497 | /* Callers of exp_fold_tree need to increment this. */ | |
498 | lang_statement_iteration = 0; | |
252b5132 RH |
499 | } |
500 | ||
501 | /*---------------------------------------------------------------------- | |
08da4cac KH |
502 | A region is an area of memory declared with the |
503 | MEMORY { name:org=exp, len=exp ... } | |
504 | syntax. | |
252b5132 | 505 | |
08da4cac | 506 | We maintain a list of all the regions here. |
252b5132 | 507 | |
08da4cac | 508 | If no regions are specified in the script, then the default is used |
a747ee4d NC |
509 | which is created when looked up to be the entire data space. |
510 | ||
511 | If create is true we are creating a region inside a MEMORY block. | |
512 | In this case it is probably an error to create a region that has | |
513 | already been created. If we are not inside a MEMORY block it is | |
514 | dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION) | |
515 | and so we issue a warning. */ | |
252b5132 RH |
516 | |
517 | static lang_memory_region_type *lang_memory_region_list; | |
518 | static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; | |
519 | ||
520 | lang_memory_region_type * | |
a747ee4d | 521 | lang_memory_region_lookup (const char *const name, bfd_boolean create) |
252b5132 RH |
522 | { |
523 | lang_memory_region_type *p; | |
1579bae1 | 524 | lang_memory_region_type *new; |
252b5132 | 525 | |
9f88b410 RS |
526 | /* NAME is NULL for LMA memspecs if no region was specified. */ |
527 | if (name == NULL) | |
528 | return NULL; | |
529 | ||
1579bae1 | 530 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
a747ee4d NC |
531 | if (strcmp (p->name, name) == 0) |
532 | { | |
533 | if (create) | |
534 | einfo (_("%P:%S: warning: redeclaration of memory region '%s'\n"), name); | |
1579bae1 | 535 | return p; |
a747ee4d | 536 | } |
252b5132 RH |
537 | |
538 | #if 0 | |
539 | /* This code used to always use the first region in the list as the | |
540 | default region. I changed it to instead use a region | |
541 | encompassing all of memory as the default region. This permits | |
542 | NOLOAD sections to work reasonably without requiring a region. | |
543 | People should specify what region they mean, if they really want | |
544 | a region. */ | |
a747ee4d | 545 | if (strcmp (name, DEFAULT_MEMORY_REGION) == 0) |
252b5132 | 546 | { |
1579bae1 AM |
547 | if (lang_memory_region_list != NULL) |
548 | return lang_memory_region_list; | |
252b5132 RH |
549 | } |
550 | #endif | |
551 | ||
a747ee4d NC |
552 | if (!create && strcmp (name, DEFAULT_MEMORY_REGION)) |
553 | einfo (_("%P:%S: warning: memory region %s not declared\n"), name); | |
554 | ||
1579bae1 | 555 | new = stat_alloc (sizeof (lang_memory_region_type)); |
252b5132 | 556 | |
1579bae1 AM |
557 | new->name = xstrdup (name); |
558 | new->next = NULL; | |
252b5132 | 559 | |
1579bae1 AM |
560 | *lang_memory_region_list_tail = new; |
561 | lang_memory_region_list_tail = &new->next; | |
562 | new->origin = 0; | |
563 | new->flags = 0; | |
564 | new->not_flags = 0; | |
565 | new->length = ~(bfd_size_type) 0; | |
566 | new->current = 0; | |
567 | new->had_full_message = FALSE; | |
252b5132 | 568 | |
1579bae1 | 569 | return new; |
252b5132 RH |
570 | } |
571 | ||
5f992e62 | 572 | static lang_memory_region_type * |
1579bae1 | 573 | lang_memory_default (asection *section) |
252b5132 RH |
574 | { |
575 | lang_memory_region_type *p; | |
576 | ||
577 | flagword sec_flags = section->flags; | |
578 | ||
579 | /* Override SEC_DATA to mean a writable section. */ | |
580 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
581 | sec_flags |= SEC_DATA; | |
582 | ||
1579bae1 | 583 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
584 | { |
585 | if ((p->flags & sec_flags) != 0 | |
586 | && (p->not_flags & sec_flags) == 0) | |
587 | { | |
588 | return p; | |
589 | } | |
590 | } | |
a747ee4d | 591 | return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE); |
252b5132 RH |
592 | } |
593 | ||
594 | lang_output_section_statement_type * | |
1579bae1 | 595 | lang_output_section_find (const char *const name) |
252b5132 RH |
596 | { |
597 | lang_statement_union_type *u; | |
598 | lang_output_section_statement_type *lookup; | |
599 | ||
1579bae1 | 600 | for (u = lang_output_section_statement.head; u != NULL; u = lookup->next) |
252b5132 RH |
601 | { |
602 | lookup = &u->output_section_statement; | |
603 | if (strcmp (name, lookup->name) == 0) | |
1579bae1 | 604 | return lookup; |
252b5132 | 605 | } |
1579bae1 | 606 | return NULL; |
252b5132 RH |
607 | } |
608 | ||
609 | lang_output_section_statement_type * | |
1579bae1 | 610 | lang_output_section_statement_lookup (const char *const name) |
252b5132 RH |
611 | { |
612 | lang_output_section_statement_type *lookup; | |
613 | ||
614 | lookup = lang_output_section_find (name); | |
1579bae1 | 615 | if (lookup == NULL) |
252b5132 | 616 | { |
1579bae1 AM |
617 | lookup = new_stat (lang_output_section_statement, stat_ptr); |
618 | lookup->region = NULL; | |
619 | lookup->lma_region = NULL; | |
620 | lookup->fill = 0; | |
252b5132 RH |
621 | lookup->block_value = 1; |
622 | lookup->name = name; | |
623 | ||
1579bae1 AM |
624 | lookup->next = NULL; |
625 | lookup->bfd_section = NULL; | |
1b493742 | 626 | lookup->processed = 0; |
252b5132 | 627 | lookup->sectype = normal_section; |
1579bae1 | 628 | lookup->addr_tree = NULL; |
252b5132 RH |
629 | lang_list_init (&lookup->children); |
630 | ||
1579bae1 | 631 | lookup->memspec = NULL; |
252b5132 RH |
632 | lookup->flags = 0; |
633 | lookup->subsection_alignment = -1; | |
634 | lookup->section_alignment = -1; | |
1579bae1 | 635 | lookup->load_base = NULL; |
9f88b410 | 636 | lookup->update_dot_tree = NULL; |
252b5132 RH |
637 | lookup->phdrs = NULL; |
638 | ||
639 | lang_statement_append (&lang_output_section_statement, | |
640 | (lang_statement_union_type *) lookup, | |
641 | &lookup->next); | |
642 | } | |
643 | return lookup; | |
644 | } | |
645 | ||
646 | static void | |
1579bae1 | 647 | lang_map_flags (flagword flag) |
252b5132 RH |
648 | { |
649 | if (flag & SEC_ALLOC) | |
650 | minfo ("a"); | |
651 | ||
652 | if (flag & SEC_CODE) | |
653 | minfo ("x"); | |
654 | ||
655 | if (flag & SEC_READONLY) | |
656 | minfo ("r"); | |
657 | ||
658 | if (flag & SEC_DATA) | |
659 | minfo ("w"); | |
660 | ||
661 | if (flag & SEC_LOAD) | |
662 | minfo ("l"); | |
663 | } | |
664 | ||
665 | void | |
1579bae1 | 666 | lang_map (void) |
252b5132 RH |
667 | { |
668 | lang_memory_region_type *m; | |
669 | ||
670 | minfo (_("\nMemory Configuration\n\n")); | |
671 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
672 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
673 | ||
1579bae1 | 674 | for (m = lang_memory_region_list; m != NULL; m = m->next) |
252b5132 RH |
675 | { |
676 | char buf[100]; | |
677 | int len; | |
678 | ||
679 | fprintf (config.map_file, "%-16s ", m->name); | |
680 | ||
681 | sprintf_vma (buf, m->origin); | |
682 | minfo ("0x%s ", buf); | |
683 | len = strlen (buf); | |
684 | while (len < 16) | |
685 | { | |
686 | print_space (); | |
687 | ++len; | |
688 | } | |
689 | ||
690 | minfo ("0x%V", m->length); | |
691 | if (m->flags || m->not_flags) | |
692 | { | |
693 | #ifndef BFD64 | |
694 | minfo (" "); | |
695 | #endif | |
696 | if (m->flags) | |
697 | { | |
698 | print_space (); | |
699 | lang_map_flags (m->flags); | |
700 | } | |
701 | ||
702 | if (m->not_flags) | |
703 | { | |
704 | minfo (" !"); | |
705 | lang_map_flags (m->not_flags); | |
706 | } | |
707 | } | |
708 | ||
709 | print_nl (); | |
710 | } | |
711 | ||
712 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
713 | ||
714 | print_statements (); | |
715 | } | |
716 | ||
717 | /* Initialize an output section. */ | |
718 | ||
719 | static void | |
1579bae1 | 720 | init_os (lang_output_section_statement_type *s) |
252b5132 RH |
721 | { |
722 | section_userdata_type *new; | |
723 | ||
724 | if (s->bfd_section != NULL) | |
725 | return; | |
726 | ||
727 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) | |
6f9efd97 | 728 | einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME); |
252b5132 | 729 | |
1579bae1 | 730 | new = stat_alloc (sizeof (section_userdata_type)); |
252b5132 RH |
731 | |
732 | s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); | |
1579bae1 | 733 | if (s->bfd_section == NULL) |
252b5132 | 734 | s->bfd_section = bfd_make_section (output_bfd, s->name); |
1579bae1 | 735 | if (s->bfd_section == NULL) |
252b5132 RH |
736 | { |
737 | einfo (_("%P%F: output format %s cannot represent section called %s\n"), | |
738 | output_bfd->xvec->name, s->name); | |
739 | } | |
740 | s->bfd_section->output_section = s->bfd_section; | |
741 | ||
08da4cac KH |
742 | /* We initialize an output sections output offset to minus its own |
743 | vma to allow us to output a section through itself. */ | |
252b5132 | 744 | s->bfd_section->output_offset = 0; |
1579bae1 | 745 | get_userdata (s->bfd_section) = new; |
252b5132 RH |
746 | |
747 | /* If there is a base address, make sure that any sections it might | |
748 | mention are initialized. */ | |
749 | if (s->addr_tree != NULL) | |
750 | exp_init_os (s->addr_tree); | |
18794b0c AM |
751 | |
752 | if (s->load_base != NULL) | |
753 | exp_init_os (s->load_base); | |
252b5132 RH |
754 | } |
755 | ||
756 | /* Make sure that all output sections mentioned in an expression are | |
757 | initialized. */ | |
758 | ||
759 | static void | |
1579bae1 | 760 | exp_init_os (etree_type *exp) |
252b5132 RH |
761 | { |
762 | switch (exp->type.node_class) | |
763 | { | |
764 | case etree_assign: | |
765 | exp_init_os (exp->assign.src); | |
766 | break; | |
767 | ||
768 | case etree_binary: | |
769 | exp_init_os (exp->binary.lhs); | |
770 | exp_init_os (exp->binary.rhs); | |
771 | break; | |
772 | ||
773 | case etree_trinary: | |
774 | exp_init_os (exp->trinary.cond); | |
775 | exp_init_os (exp->trinary.lhs); | |
776 | exp_init_os (exp->trinary.rhs); | |
777 | break; | |
778 | ||
b6ca8815 NS |
779 | case etree_assert: |
780 | exp_init_os (exp->assert_s.child); | |
781 | break; | |
782 | ||
252b5132 RH |
783 | case etree_unary: |
784 | exp_init_os (exp->unary.child); | |
785 | break; | |
786 | ||
787 | case etree_name: | |
788 | switch (exp->type.node_code) | |
789 | { | |
790 | case ADDR: | |
791 | case LOADADDR: | |
792 | case SIZEOF: | |
793 | { | |
794 | lang_output_section_statement_type *os; | |
795 | ||
796 | os = lang_output_section_find (exp->name.name); | |
797 | if (os != NULL && os->bfd_section == NULL) | |
798 | init_os (os); | |
799 | } | |
800 | } | |
801 | break; | |
802 | ||
803 | default: | |
804 | break; | |
805 | } | |
806 | } | |
9503fd87 | 807 | \f |
252b5132 | 808 | /* Sections marked with the SEC_LINK_ONCE flag should only be linked |
9503fd87 ILT |
809 | once into the output. This routine checks each section, and |
810 | arrange to discard it if a section of the same name has already | |
bb8fe706 ILT |
811 | been linked. If the section has COMDAT information, then it uses |
812 | that to decide whether the section should be included. This code | |
813 | assumes that all relevant sections have the SEC_LINK_ONCE flag set; | |
9503fd87 ILT |
814 | that is, it does not depend solely upon the section name. |
815 | section_already_linked is called via bfd_map_over_sections. */ | |
816 | ||
817 | /* This is the shape of the elements inside the already_linked hash | |
818 | table. It maps a name onto a list of already_linked elements with | |
819 | the same name. It's possible to get more than one element in a | |
820 | list if the COMDAT sections have different names. */ | |
821 | ||
5f992e62 | 822 | struct already_linked_hash_entry |
9503fd87 ILT |
823 | { |
824 | struct bfd_hash_entry root; | |
825 | struct already_linked *entry; | |
826 | }; | |
827 | ||
5f992e62 | 828 | struct already_linked |
9503fd87 ILT |
829 | { |
830 | struct already_linked *next; | |
831 | asection *sec; | |
832 | }; | |
833 | ||
834 | /* The hash table. */ | |
835 | ||
836 | static struct bfd_hash_table already_linked_table; | |
252b5132 | 837 | |
252b5132 | 838 | static void |
1579bae1 | 839 | section_already_linked (bfd *abfd, asection *sec, void *data) |
252b5132 | 840 | { |
1579bae1 | 841 | lang_input_statement_type *entry = data; |
252b5132 RH |
842 | flagword flags; |
843 | const char *name; | |
9503fd87 ILT |
844 | struct already_linked *l; |
845 | struct already_linked_hash_entry *already_linked_list; | |
252b5132 RH |
846 | |
847 | /* If we are only reading symbols from this object, then we want to | |
848 | discard all sections. */ | |
849 | if (entry->just_syms_flag) | |
850 | { | |
c2c01aa7 | 851 | bfd_link_just_syms (sec, &link_info); |
252b5132 RH |
852 | return; |
853 | } | |
854 | ||
855 | flags = bfd_get_section_flags (abfd, sec); | |
856 | ||
857 | if ((flags & SEC_LINK_ONCE) == 0) | |
858 | return; | |
859 | ||
577a0623 | 860 | /* FIXME: When doing a relocatable link, we may have trouble |
e361c369 ILT |
861 | copying relocations in other sections that refer to local symbols |
862 | in the section being discarded. Those relocations will have to | |
863 | be converted somehow; as of this writing I'm not sure that any of | |
864 | the backends handle that correctly. | |
865 | ||
866 | It is tempting to instead not discard link once sections when | |
577a0623 | 867 | doing a relocatable link (technically, they should be discarded |
e361c369 ILT |
868 | whenever we are building constructors). However, that fails, |
869 | because the linker winds up combining all the link once sections | |
870 | into a single large link once section, which defeats the purpose | |
871 | of having link once sections in the first place. | |
872 | ||
577a0623 | 873 | Also, not merging link once sections in a relocatable link |
9ad85d9b | 874 | causes trouble for MIPS ELF, which relies on link once semantics |
e361c369 ILT |
875 | to handle the .reginfo section correctly. */ |
876 | ||
252b5132 RH |
877 | name = bfd_get_section_name (abfd, sec); |
878 | ||
5f992e62 | 879 | already_linked_list = |
9503fd87 | 880 | ((struct already_linked_hash_entry *) |
b34976b6 | 881 | bfd_hash_lookup (&already_linked_table, name, TRUE, FALSE)); |
9503fd87 | 882 | |
08da4cac | 883 | for (l = already_linked_list->entry; l != NULL; l = l->next) |
252b5132 | 884 | { |
9503fd87 ILT |
885 | if (sec->comdat == NULL |
886 | || l->sec->comdat == NULL | |
887 | || strcmp (sec->comdat->name, l->sec->comdat->name) == 0) | |
252b5132 RH |
888 | { |
889 | /* The section has already been linked. See if we should | |
890 | issue a warning. */ | |
891 | switch (flags & SEC_LINK_DUPLICATES) | |
892 | { | |
893 | default: | |
894 | abort (); | |
895 | ||
896 | case SEC_LINK_DUPLICATES_DISCARD: | |
897 | break; | |
898 | ||
899 | case SEC_LINK_DUPLICATES_ONE_ONLY: | |
bb8fe706 ILT |
900 | if (sec->comdat == NULL) |
901 | einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"), | |
902 | abfd, name); | |
903 | else | |
904 | einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"), | |
905 | abfd, name, sec->comdat->name); | |
252b5132 RH |
906 | break; |
907 | ||
908 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: | |
909 | /* FIXME: We should really dig out the contents of both | |
910 | sections and memcmp them. The COFF/PE spec says that | |
911 | the Microsoft linker does not implement this | |
912 | correctly, so I'm not going to bother doing it | |
913 | either. */ | |
914 | /* Fall through. */ | |
915 | case SEC_LINK_DUPLICATES_SAME_SIZE: | |
916 | if (bfd_section_size (abfd, sec) | |
917 | != bfd_section_size (l->sec->owner, l->sec)) | |
918 | einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"), | |
919 | abfd, name); | |
920 | break; | |
921 | } | |
922 | ||
39dcfe18 AM |
923 | /* Set the output_section field so that lang_add_section |
924 | does not create a lang_input_section structure for this | |
f97b9cb8 L |
925 | section. Since there might be a symbol in the section |
926 | being discarded, we must retain a pointer to the section | |
927 | which we are really going to use. */ | |
252b5132 | 928 | sec->output_section = bfd_abs_section_ptr; |
f97b9cb8 | 929 | sec->kept_section = l->sec; |
252b5132 | 930 | |
9ad85d9b AM |
931 | if (flags & SEC_GROUP) |
932 | bfd_discard_group (abfd, sec); | |
933 | ||
252b5132 RH |
934 | return; |
935 | } | |
936 | } | |
937 | ||
9503fd87 ILT |
938 | /* This is the first section with this name. Record it. Allocate |
939 | the memory from the same obstack as the hash table is kept in. */ | |
940 | ||
1579bae1 | 941 | l = bfd_hash_allocate (&already_linked_table, sizeof *l); |
252b5132 | 942 | |
252b5132 | 943 | l->sec = sec; |
9503fd87 ILT |
944 | l->next = already_linked_list->entry; |
945 | already_linked_list->entry = l; | |
946 | } | |
947 | ||
948 | /* Support routines for the hash table used by section_already_linked, | |
949 | initialize the table, fill in an entry and remove the table. */ | |
950 | ||
951 | static struct bfd_hash_entry * | |
1579bae1 AM |
952 | already_linked_newfunc (struct bfd_hash_entry *entry ATTRIBUTE_UNUSED, |
953 | struct bfd_hash_table *table, | |
954 | const char *string ATTRIBUTE_UNUSED) | |
9503fd87 | 955 | { |
5f992e62 | 956 | struct already_linked_hash_entry *ret = |
9503fd87 ILT |
957 | bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry)); |
958 | ||
959 | ret->entry = NULL; | |
960 | ||
1579bae1 | 961 | return &ret->root; |
9503fd87 ILT |
962 | } |
963 | ||
964 | static void | |
1579bae1 | 965 | already_linked_table_init (void) |
9503fd87 ILT |
966 | { |
967 | if (! bfd_hash_table_init_n (&already_linked_table, | |
968 | already_linked_newfunc, | |
969 | 42)) | |
970 | einfo (_("%P%F: Failed to create hash table\n")); | |
971 | } | |
972 | ||
973 | static void | |
1579bae1 | 974 | already_linked_table_free (void) |
9503fd87 ILT |
975 | { |
976 | bfd_hash_table_free (&already_linked_table); | |
252b5132 RH |
977 | } |
978 | \f | |
979 | /* The wild routines. | |
980 | ||
981 | These expand statements like *(.text) and foo.o to a list of | |
982 | explicit actions, like foo.o(.text), bar.o(.text) and | |
983 | foo.o(.text, .data). */ | |
984 | ||
b34976b6 | 985 | /* Return TRUE if the PATTERN argument is a wildcard pattern. |
252b5132 RH |
986 | Although backslashes are treated specially if a pattern contains |
987 | wildcards, we do not consider the mere presence of a backslash to | |
ca0c1d3e | 988 | be enough to cause the pattern to be treated as a wildcard. |
252b5132 RH |
989 | That lets us handle DOS filenames more naturally. */ |
990 | ||
b34976b6 | 991 | static bfd_boolean |
1579bae1 | 992 | wildcardp (const char *pattern) |
252b5132 RH |
993 | { |
994 | const char *s; | |
995 | ||
996 | for (s = pattern; *s != '\0'; ++s) | |
997 | if (*s == '?' | |
998 | || *s == '*' | |
999 | || *s == '[') | |
b34976b6 AM |
1000 | return TRUE; |
1001 | return FALSE; | |
252b5132 RH |
1002 | } |
1003 | ||
1004 | /* Add SECTION to the output section OUTPUT. Do this by creating a | |
1005 | lang_input_section statement which is placed at PTR. FILE is the | |
1006 | input file which holds SECTION. */ | |
1007 | ||
1008 | void | |
1579bae1 AM |
1009 | lang_add_section (lang_statement_list_type *ptr, |
1010 | asection *section, | |
1011 | lang_output_section_statement_type *output, | |
1012 | lang_input_statement_type *file) | |
252b5132 RH |
1013 | { |
1014 | flagword flags; | |
b34976b6 | 1015 | bfd_boolean discard; |
252b5132 RH |
1016 | |
1017 | flags = bfd_get_section_flags (section->owner, section); | |
1018 | ||
b34976b6 | 1019 | discard = FALSE; |
252b5132 | 1020 | |
c4c41219 AM |
1021 | /* Discard sections marked with SEC_EXCLUDE if we are doing a final |
1022 | link. Discard debugging sections marked with SEC_EXCLUDE on a | |
1023 | relocatable link too. */ | |
1024 | if ((flags & SEC_EXCLUDE) != 0 | |
1049f94e | 1025 | && ((flags & SEC_DEBUGGING) != 0 || !link_info.relocatable)) |
b34976b6 | 1026 | discard = TRUE; |
252b5132 RH |
1027 | |
1028 | /* Discard input sections which are assigned to a section named | |
1029 | DISCARD_SECTION_NAME. */ | |
1030 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
b34976b6 | 1031 | discard = TRUE; |
252b5132 RH |
1032 | |
1033 | /* Discard debugging sections if we are stripping debugging | |
1034 | information. */ | |
1035 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
1036 | && (flags & SEC_DEBUGGING) != 0) | |
b34976b6 | 1037 | discard = TRUE; |
252b5132 RH |
1038 | |
1039 | if (discard) | |
1040 | { | |
1041 | if (section->output_section == NULL) | |
1042 | { | |
1043 | /* This prevents future calls from assigning this section. */ | |
1044 | section->output_section = bfd_abs_section_ptr; | |
1045 | } | |
1046 | return; | |
1047 | } | |
1048 | ||
1049 | if (section->output_section == NULL) | |
1050 | { | |
b34976b6 | 1051 | bfd_boolean first; |
252b5132 RH |
1052 | lang_input_section_type *new; |
1053 | flagword flags; | |
1054 | ||
1055 | if (output->bfd_section == NULL) | |
d1778b88 AM |
1056 | init_os (output); |
1057 | ||
1058 | first = ! output->bfd_section->linker_has_input; | |
1059 | output->bfd_section->linker_has_input = 1; | |
252b5132 | 1060 | |
08da4cac | 1061 | /* Add a section reference to the list. */ |
252b5132 RH |
1062 | new = new_stat (lang_input_section, ptr); |
1063 | ||
1064 | new->section = section; | |
1065 | new->ifile = file; | |
1066 | section->output_section = output->bfd_section; | |
1067 | ||
1068 | flags = section->flags; | |
1069 | ||
1070 | /* We don't copy the SEC_NEVER_LOAD flag from an input section | |
1071 | to an output section, because we want to be able to include a | |
1072 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
1073 | section (I don't know why we want to do this, but we do). | |
1074 | build_link_order in ldwrite.c handles this case by turning | |
1075 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
1076 | ||
1077 | flags &= ~ SEC_NEVER_LOAD; | |
1078 | ||
1079 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've | |
1080 | already been processed. One reason to do this is that on pe | |
1081 | format targets, .text$foo sections go into .text and it's odd | |
1082 | to see .text with SEC_LINK_ONCE set. */ | |
1083 | ||
1049f94e | 1084 | if (! link_info.relocatable) |
252b5132 RH |
1085 | flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); |
1086 | ||
1087 | /* If this is not the first input section, and the SEC_READONLY | |
1088 | flag is not currently set, then don't set it just because the | |
1089 | input section has it set. */ | |
1090 | ||
1091 | if (! first && (section->output_section->flags & SEC_READONLY) == 0) | |
1092 | flags &= ~ SEC_READONLY; | |
1093 | ||
f5fa8ca2 JJ |
1094 | /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */ |
1095 | if (! first | |
1096 | && ((section->output_section->flags & (SEC_MERGE | SEC_STRINGS)) | |
1097 | != (flags & (SEC_MERGE | SEC_STRINGS)) | |
1098 | || ((flags & SEC_MERGE) | |
1099 | && section->output_section->entsize != section->entsize))) | |
1100 | { | |
1101 | section->output_section->flags &= ~ (SEC_MERGE | SEC_STRINGS); | |
1102 | flags &= ~ (SEC_MERGE | SEC_STRINGS); | |
1103 | } | |
1104 | ||
252b5132 RH |
1105 | section->output_section->flags |= flags; |
1106 | ||
f5fa8ca2 JJ |
1107 | if (flags & SEC_MERGE) |
1108 | section->output_section->entsize = section->entsize; | |
1109 | ||
252b5132 RH |
1110 | /* If SEC_READONLY is not set in the input section, then clear |
1111 | it from the output section. */ | |
1112 | if ((section->flags & SEC_READONLY) == 0) | |
1113 | section->output_section->flags &= ~SEC_READONLY; | |
1114 | ||
1115 | switch (output->sectype) | |
1116 | { | |
1117 | case normal_section: | |
1118 | break; | |
1119 | case dsect_section: | |
1120 | case copy_section: | |
1121 | case info_section: | |
1122 | case overlay_section: | |
1123 | output->bfd_section->flags &= ~SEC_ALLOC; | |
1124 | break; | |
1125 | case noload_section: | |
1126 | output->bfd_section->flags &= ~SEC_LOAD; | |
1127 | output->bfd_section->flags |= SEC_NEVER_LOAD; | |
1128 | break; | |
1129 | } | |
1130 | ||
667f5177 ILT |
1131 | /* Copy over SEC_SMALL_DATA. */ |
1132 | if (section->flags & SEC_SMALL_DATA) | |
1133 | section->output_section->flags |= SEC_SMALL_DATA; | |
9e41f973 | 1134 | |
252b5132 RH |
1135 | if (section->alignment_power > output->bfd_section->alignment_power) |
1136 | output->bfd_section->alignment_power = section->alignment_power; | |
1137 | ||
396a2467 | 1138 | /* If supplied an alignment, then force it. */ |
252b5132 RH |
1139 | if (output->section_alignment != -1) |
1140 | output->bfd_section->alignment_power = output->section_alignment; | |
74459f0e TW |
1141 | |
1142 | if (section->flags & SEC_BLOCK) | |
08da4cac KH |
1143 | { |
1144 | section->output_section->flags |= SEC_BLOCK; | |
1145 | /* FIXME: This value should really be obtained from the bfd... */ | |
1146 | output->block_value = 128; | |
1147 | } | |
252b5132 RH |
1148 | } |
1149 | } | |
1150 | ||
1151 | /* Handle wildcard sorting. This returns the lang_input_section which | |
1152 | should follow the one we are going to create for SECTION and FILE, | |
1153 | based on the sorting requirements of WILD. It returns NULL if the | |
1154 | new section should just go at the end of the current list. */ | |
1155 | ||
1156 | static lang_statement_union_type * | |
1579bae1 AM |
1157 | wild_sort (lang_wild_statement_type *wild, |
1158 | struct wildcard_list *sec, | |
1159 | lang_input_statement_type *file, | |
1160 | asection *section) | |
252b5132 RH |
1161 | { |
1162 | const char *section_name; | |
1163 | lang_statement_union_type *l; | |
1164 | ||
b6bf44ba | 1165 | if (!wild->filenames_sorted && (sec == NULL || !sec->spec.sorted)) |
252b5132 RH |
1166 | return NULL; |
1167 | ||
1168 | section_name = bfd_get_section_name (file->the_bfd, section); | |
bba1a0c0 | 1169 | for (l = wild->children.head; l != NULL; l = l->header.next) |
252b5132 RH |
1170 | { |
1171 | lang_input_section_type *ls; | |
1172 | ||
1173 | if (l->header.type != lang_input_section_enum) | |
1174 | continue; | |
1175 | ls = &l->input_section; | |
1176 | ||
1177 | /* Sorting by filename takes precedence over sorting by section | |
1178 | name. */ | |
1179 | ||
1180 | if (wild->filenames_sorted) | |
1181 | { | |
1182 | const char *fn, *ln; | |
b34976b6 | 1183 | bfd_boolean fa, la; |
252b5132 RH |
1184 | int i; |
1185 | ||
1186 | /* The PE support for the .idata section as generated by | |
1187 | dlltool assumes that files will be sorted by the name of | |
1188 | the archive and then the name of the file within the | |
1189 | archive. */ | |
1190 | ||
1191 | if (file->the_bfd != NULL | |
1192 | && bfd_my_archive (file->the_bfd) != NULL) | |
1193 | { | |
1194 | fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); | |
b34976b6 | 1195 | fa = TRUE; |
252b5132 RH |
1196 | } |
1197 | else | |
1198 | { | |
1199 | fn = file->filename; | |
b34976b6 | 1200 | fa = FALSE; |
252b5132 RH |
1201 | } |
1202 | ||
1203 | if (ls->ifile->the_bfd != NULL | |
1204 | && bfd_my_archive (ls->ifile->the_bfd) != NULL) | |
1205 | { | |
1206 | ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd)); | |
b34976b6 | 1207 | la = TRUE; |
252b5132 RH |
1208 | } |
1209 | else | |
1210 | { | |
1211 | ln = ls->ifile->filename; | |
b34976b6 | 1212 | la = FALSE; |
252b5132 RH |
1213 | } |
1214 | ||
1215 | i = strcmp (fn, ln); | |
1216 | if (i > 0) | |
1217 | continue; | |
1218 | else if (i < 0) | |
1219 | break; | |
1220 | ||
1221 | if (fa || la) | |
1222 | { | |
1223 | if (fa) | |
1224 | fn = file->filename; | |
1225 | if (la) | |
1226 | ln = ls->ifile->filename; | |
1227 | ||
1228 | i = strcmp (fn, ln); | |
1229 | if (i > 0) | |
1230 | continue; | |
1231 | else if (i < 0) | |
1232 | break; | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | /* Here either the files are not sorted by name, or we are | |
1237 | looking at the sections for this file. */ | |
1238 | ||
b6bf44ba | 1239 | if (sec != NULL && sec->spec.sorted) |
252b5132 RH |
1240 | { |
1241 | if (strcmp (section_name, | |
1242 | bfd_get_section_name (ls->ifile->the_bfd, | |
1243 | ls->section)) | |
1244 | < 0) | |
1245 | break; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | return l; | |
1250 | } | |
1251 | ||
1252 | /* Expand a wild statement for a particular FILE. SECTION may be | |
1253 | NULL, in which case it is a wild card. */ | |
1254 | ||
1255 | static void | |
1579bae1 AM |
1256 | output_section_callback (lang_wild_statement_type *ptr, |
1257 | struct wildcard_list *sec, | |
1258 | asection *section, | |
1259 | lang_input_statement_type *file, | |
1260 | void *output) | |
4dec4d4e RH |
1261 | { |
1262 | lang_statement_union_type *before; | |
5f992e62 | 1263 | |
b6bf44ba AM |
1264 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
1265 | if (unique_section_p (bfd_get_section_name (file->the_bfd, section))) | |
1266 | return; | |
1267 | ||
4dec4d4e RH |
1268 | /* If the wild pattern was marked KEEP, the member sections |
1269 | should be as well. */ | |
1270 | if (ptr->keep_sections) | |
1271 | section->flags |= SEC_KEEP; | |
5f992e62 | 1272 | |
b6bf44ba | 1273 | before = wild_sort (ptr, sec, file, section); |
5f992e62 | 1274 | |
4dec4d4e RH |
1275 | /* Here BEFORE points to the lang_input_section which |
1276 | should follow the one we are about to add. If BEFORE | |
1277 | is NULL, then the section should just go at the end | |
1278 | of the current list. */ | |
5f992e62 | 1279 | |
4dec4d4e | 1280 | if (before == NULL) |
39dcfe18 AM |
1281 | lang_add_section (&ptr->children, section, |
1282 | (lang_output_section_statement_type *) output, | |
1283 | file); | |
4dec4d4e | 1284 | else |
252b5132 | 1285 | { |
4dec4d4e RH |
1286 | lang_statement_list_type list; |
1287 | lang_statement_union_type **pp; | |
5f992e62 | 1288 | |
4dec4d4e | 1289 | lang_list_init (&list); |
39dcfe18 AM |
1290 | lang_add_section (&list, section, |
1291 | (lang_output_section_statement_type *) output, | |
1292 | file); | |
5f992e62 | 1293 | |
4dec4d4e RH |
1294 | /* If we are discarding the section, LIST.HEAD will |
1295 | be NULL. */ | |
1296 | if (list.head != NULL) | |
252b5132 | 1297 | { |
bba1a0c0 | 1298 | ASSERT (list.head->header.next == NULL); |
5f992e62 | 1299 | |
4dec4d4e RH |
1300 | for (pp = &ptr->children.head; |
1301 | *pp != before; | |
bba1a0c0 | 1302 | pp = &(*pp)->header.next) |
4dec4d4e | 1303 | ASSERT (*pp != NULL); |
5f992e62 | 1304 | |
bba1a0c0 | 1305 | list.head->header.next = *pp; |
4dec4d4e | 1306 | *pp = list.head; |
252b5132 RH |
1307 | } |
1308 | } | |
1309 | } | |
1310 | ||
1311 | /* This is passed a file name which must have been seen already and | |
1312 | added to the statement tree. We will see if it has been opened | |
1313 | already and had its symbols read. If not then we'll read it. */ | |
1314 | ||
1315 | static lang_input_statement_type * | |
1579bae1 | 1316 | lookup_name (const char *name) |
252b5132 RH |
1317 | { |
1318 | lang_input_statement_type *search; | |
1319 | ||
1320 | for (search = (lang_input_statement_type *) input_file_chain.head; | |
1579bae1 | 1321 | search != NULL; |
252b5132 RH |
1322 | search = (lang_input_statement_type *) search->next_real_file) |
1323 | { | |
0013291d NC |
1324 | /* Use the local_sym_name as the name of the file that has |
1325 | already been loaded as filename might have been transformed | |
1326 | via the search directory lookup mechanism. */ | |
1327 | const char * filename = search->local_sym_name; | |
1328 | ||
1329 | if (filename == NULL && name == NULL) | |
252b5132 | 1330 | return search; |
0013291d | 1331 | if (filename != NULL |
1579bae1 | 1332 | && name != NULL |
0013291d | 1333 | && strcmp (filename, name) == 0) |
252b5132 RH |
1334 | break; |
1335 | } | |
1336 | ||
1579bae1 | 1337 | if (search == NULL) |
0013291d | 1338 | search = new_afile (name, lang_input_file_is_search_file_enum, default_target, |
b34976b6 | 1339 | FALSE); |
252b5132 RH |
1340 | |
1341 | /* If we have already added this file, or this file is not real | |
1342 | (FIXME: can that ever actually happen?) or the name is NULL | |
1343 | (FIXME: can that ever actually happen?) don't add this file. */ | |
1344 | if (search->loaded | |
1345 | || ! search->real | |
1579bae1 | 1346 | || search->filename == NULL) |
252b5132 RH |
1347 | return search; |
1348 | ||
1579bae1 | 1349 | if (! load_symbols (search, NULL)) |
6770ec8c | 1350 | return NULL; |
252b5132 RH |
1351 | |
1352 | return search; | |
1353 | } | |
1354 | ||
1355 | /* Get the symbols for an input file. */ | |
1356 | ||
b34976b6 | 1357 | static bfd_boolean |
1579bae1 AM |
1358 | load_symbols (lang_input_statement_type *entry, |
1359 | lang_statement_list_type *place) | |
252b5132 RH |
1360 | { |
1361 | char **matching; | |
1362 | ||
1363 | if (entry->loaded) | |
b34976b6 | 1364 | return TRUE; |
252b5132 RH |
1365 | |
1366 | ldfile_open_file (entry); | |
1367 | ||
1368 | if (! bfd_check_format (entry->the_bfd, bfd_archive) | |
1369 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
1370 | { | |
1371 | bfd_error_type err; | |
1372 | lang_statement_list_type *hold; | |
b34976b6 | 1373 | bfd_boolean bad_load = TRUE; |
e3f2db7f | 1374 | bfd_boolean save_ldlang_sysrooted_script; |
b7a26f91 | 1375 | |
252b5132 | 1376 | err = bfd_get_error (); |
884fb58e NC |
1377 | |
1378 | /* See if the emulation has some special knowledge. */ | |
1379 | if (ldemul_unrecognized_file (entry)) | |
b34976b6 | 1380 | return TRUE; |
884fb58e | 1381 | |
252b5132 RH |
1382 | if (err == bfd_error_file_ambiguously_recognized) |
1383 | { | |
1384 | char **p; | |
1385 | ||
1386 | einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); | |
1387 | einfo (_("%B: matching formats:"), entry->the_bfd); | |
1388 | for (p = matching; *p != NULL; p++) | |
1389 | einfo (" %s", *p); | |
1390 | einfo ("%F\n"); | |
1391 | } | |
1392 | else if (err != bfd_error_file_not_recognized | |
1393 | || place == NULL) | |
6770ec8c NC |
1394 | einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); |
1395 | else | |
b34976b6 | 1396 | bad_load = FALSE; |
b7a26f91 | 1397 | |
252b5132 RH |
1398 | bfd_close (entry->the_bfd); |
1399 | entry->the_bfd = NULL; | |
1400 | ||
252b5132 | 1401 | /* Try to interpret the file as a linker script. */ |
252b5132 RH |
1402 | ldfile_open_command_file (entry->filename); |
1403 | ||
1404 | hold = stat_ptr; | |
1405 | stat_ptr = place; | |
e3f2db7f AO |
1406 | save_ldlang_sysrooted_script = ldlang_sysrooted_script; |
1407 | ldlang_sysrooted_script = entry->sysrooted; | |
252b5132 | 1408 | |
b34976b6 | 1409 | ldfile_assumed_script = TRUE; |
252b5132 RH |
1410 | parser_input = input_script; |
1411 | yyparse (); | |
b34976b6 | 1412 | ldfile_assumed_script = FALSE; |
252b5132 | 1413 | |
e3f2db7f | 1414 | ldlang_sysrooted_script = save_ldlang_sysrooted_script; |
252b5132 RH |
1415 | stat_ptr = hold; |
1416 | ||
6770ec8c | 1417 | return ! bad_load; |
252b5132 RH |
1418 | } |
1419 | ||
1420 | if (ldemul_recognized_file (entry)) | |
b34976b6 | 1421 | return TRUE; |
252b5132 RH |
1422 | |
1423 | /* We don't call ldlang_add_file for an archive. Instead, the | |
1424 | add_symbols entry point will call ldlang_add_file, via the | |
1425 | add_archive_element callback, for each element of the archive | |
1426 | which is used. */ | |
1427 | switch (bfd_get_format (entry->the_bfd)) | |
1428 | { | |
1429 | default: | |
1430 | break; | |
1431 | ||
1432 | case bfd_object: | |
1433 | ldlang_add_file (entry); | |
1434 | if (trace_files || trace_file_tries) | |
1435 | info_msg ("%I\n", entry); | |
1436 | break; | |
1437 | ||
1438 | case bfd_archive: | |
1439 | if (entry->whole_archive) | |
1440 | { | |
b7a26f91 | 1441 | bfd *member = NULL; |
b34976b6 | 1442 | bfd_boolean loaded = TRUE; |
6770ec8c NC |
1443 | |
1444 | for (;;) | |
252b5132 | 1445 | { |
6770ec8c NC |
1446 | member = bfd_openr_next_archived_file (entry->the_bfd, member); |
1447 | ||
1448 | if (member == NULL) | |
1449 | break; | |
b7a26f91 | 1450 | |
252b5132 | 1451 | if (! bfd_check_format (member, bfd_object)) |
6770ec8c NC |
1452 | { |
1453 | einfo (_("%F%B: member %B in archive is not an object\n"), | |
1454 | entry->the_bfd, member); | |
b34976b6 | 1455 | loaded = FALSE; |
6770ec8c NC |
1456 | } |
1457 | ||
252b5132 RH |
1458 | if (! ((*link_info.callbacks->add_archive_element) |
1459 | (&link_info, member, "--whole-archive"))) | |
1460 | abort (); | |
6770ec8c | 1461 | |
252b5132 | 1462 | if (! bfd_link_add_symbols (member, &link_info)) |
6770ec8c NC |
1463 | { |
1464 | einfo (_("%F%B: could not read symbols: %E\n"), member); | |
b34976b6 | 1465 | loaded = FALSE; |
6770ec8c | 1466 | } |
252b5132 RH |
1467 | } |
1468 | ||
6770ec8c NC |
1469 | entry->loaded = loaded; |
1470 | return loaded; | |
252b5132 | 1471 | } |
6770ec8c | 1472 | break; |
252b5132 RH |
1473 | } |
1474 | ||
03bdc404 | 1475 | if (bfd_link_add_symbols (entry->the_bfd, &link_info)) |
b34976b6 | 1476 | entry->loaded = TRUE; |
6770ec8c | 1477 | else |
252b5132 RH |
1478 | einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); |
1479 | ||
6770ec8c | 1480 | return entry->loaded; |
252b5132 RH |
1481 | } |
1482 | ||
b6bf44ba AM |
1483 | /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both |
1484 | may be NULL, indicating that it is a wildcard. Separate | |
1485 | lang_input_section statements are created for each part of the | |
1486 | expansion; they are added after the wild statement S. OUTPUT is | |
1487 | the output section. */ | |
252b5132 RH |
1488 | |
1489 | static void | |
1579bae1 AM |
1490 | wild (lang_wild_statement_type *s, |
1491 | const char *target ATTRIBUTE_UNUSED, | |
1492 | lang_output_section_statement_type *output) | |
252b5132 | 1493 | { |
b6bf44ba | 1494 | struct wildcard_list *sec; |
252b5132 | 1495 | |
1579bae1 | 1496 | walk_wild (s, output_section_callback, output); |
b6bf44ba AM |
1497 | |
1498 | for (sec = s->section_list; sec != NULL; sec = sec->next) | |
252b5132 | 1499 | { |
b6bf44ba AM |
1500 | if (default_common_section != NULL) |
1501 | break; | |
1502 | if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0) | |
1503 | { | |
1504 | /* Remember the section that common is going to in case we | |
b7a26f91 | 1505 | later get something which doesn't know where to put it. */ |
b6bf44ba AM |
1506 | default_common_section = output; |
1507 | } | |
252b5132 RH |
1508 | } |
1509 | } | |
1510 | ||
b34976b6 | 1511 | /* Return TRUE iff target is the sought target. */ |
08da4cac | 1512 | |
e50d8076 | 1513 | static int |
1579bae1 | 1514 | get_target (const bfd_target *target, void *data) |
e50d8076 | 1515 | { |
1579bae1 | 1516 | const char *sought = data; |
5f992e62 | 1517 | |
e50d8076 NC |
1518 | return strcmp (target->name, sought) == 0; |
1519 | } | |
1520 | ||
1521 | /* Like strcpy() but convert to lower case as well. */ | |
08da4cac | 1522 | |
e50d8076 | 1523 | static void |
1579bae1 | 1524 | stricpy (char *dest, char *src) |
e50d8076 NC |
1525 | { |
1526 | char c; | |
5f992e62 | 1527 | |
08da4cac | 1528 | while ((c = *src++) != 0) |
3882b010 | 1529 | *dest++ = TOLOWER (c); |
e50d8076 | 1530 | |
08da4cac | 1531 | *dest = 0; |
e50d8076 NC |
1532 | } |
1533 | ||
396a2467 | 1534 | /* Remove the first occurrence of needle (if any) in haystack |
e50d8076 | 1535 | from haystack. */ |
08da4cac | 1536 | |
e50d8076 | 1537 | static void |
1579bae1 | 1538 | strcut (char *haystack, char *needle) |
e50d8076 NC |
1539 | { |
1540 | haystack = strstr (haystack, needle); | |
5f992e62 | 1541 | |
e50d8076 NC |
1542 | if (haystack) |
1543 | { | |
08da4cac | 1544 | char *src; |
e50d8076 | 1545 | |
08da4cac KH |
1546 | for (src = haystack + strlen (needle); *src;) |
1547 | *haystack++ = *src++; | |
5f992e62 | 1548 | |
08da4cac | 1549 | *haystack = 0; |
e50d8076 NC |
1550 | } |
1551 | } | |
1552 | ||
1553 | /* Compare two target format name strings. | |
1554 | Return a value indicating how "similar" they are. */ | |
08da4cac | 1555 | |
e50d8076 | 1556 | static int |
1579bae1 | 1557 | name_compare (char *first, char *second) |
e50d8076 | 1558 | { |
08da4cac KH |
1559 | char *copy1; |
1560 | char *copy2; | |
1561 | int result; | |
5f992e62 | 1562 | |
e50d8076 NC |
1563 | copy1 = xmalloc (strlen (first) + 1); |
1564 | copy2 = xmalloc (strlen (second) + 1); | |
1565 | ||
1566 | /* Convert the names to lower case. */ | |
1567 | stricpy (copy1, first); | |
1568 | stricpy (copy2, second); | |
1569 | ||
1579bae1 | 1570 | /* Remove size and endian strings from the name. */ |
e50d8076 NC |
1571 | strcut (copy1, "big"); |
1572 | strcut (copy1, "little"); | |
1573 | strcut (copy2, "big"); | |
1574 | strcut (copy2, "little"); | |
1575 | ||
1576 | /* Return a value based on how many characters match, | |
1577 | starting from the beginning. If both strings are | |
1578 | the same then return 10 * their length. */ | |
08da4cac KH |
1579 | for (result = 0; copy1[result] == copy2[result]; result++) |
1580 | if (copy1[result] == 0) | |
e50d8076 NC |
1581 | { |
1582 | result *= 10; | |
1583 | break; | |
1584 | } | |
5f992e62 | 1585 | |
e50d8076 NC |
1586 | free (copy1); |
1587 | free (copy2); | |
1588 | ||
1589 | return result; | |
1590 | } | |
1591 | ||
1592 | /* Set by closest_target_match() below. */ | |
08da4cac | 1593 | static const bfd_target *winner; |
e50d8076 NC |
1594 | |
1595 | /* Scan all the valid bfd targets looking for one that has the endianness | |
1596 | requirement that was specified on the command line, and is the nearest | |
1597 | match to the original output target. */ | |
08da4cac | 1598 | |
e50d8076 | 1599 | static int |
1579bae1 | 1600 | closest_target_match (const bfd_target *target, void *data) |
e50d8076 | 1601 | { |
1579bae1 | 1602 | const bfd_target *original = data; |
5f992e62 | 1603 | |
08da4cac KH |
1604 | if (command_line.endian == ENDIAN_BIG |
1605 | && target->byteorder != BFD_ENDIAN_BIG) | |
e50d8076 | 1606 | return 0; |
5f992e62 | 1607 | |
08da4cac KH |
1608 | if (command_line.endian == ENDIAN_LITTLE |
1609 | && target->byteorder != BFD_ENDIAN_LITTLE) | |
e50d8076 NC |
1610 | return 0; |
1611 | ||
1612 | /* Must be the same flavour. */ | |
1613 | if (target->flavour != original->flavour) | |
1614 | return 0; | |
1615 | ||
1616 | /* If we have not found a potential winner yet, then record this one. */ | |
1617 | if (winner == NULL) | |
1618 | { | |
1619 | winner = target; | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | /* Oh dear, we now have two potential candidates for a successful match. | |
4de2d33d | 1624 | Compare their names and choose the better one. */ |
d1778b88 AM |
1625 | if (name_compare (target->name, original->name) |
1626 | > name_compare (winner->name, original->name)) | |
e50d8076 NC |
1627 | winner = target; |
1628 | ||
1629 | /* Keep on searching until wqe have checked them all. */ | |
1630 | return 0; | |
1631 | } | |
1632 | ||
1633 | /* Return the BFD target format of the first input file. */ | |
08da4cac | 1634 | |
e50d8076 | 1635 | static char * |
1579bae1 | 1636 | get_first_input_target (void) |
e50d8076 | 1637 | { |
08da4cac | 1638 | char *target = NULL; |
e50d8076 NC |
1639 | |
1640 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
1641 | { | |
1642 | if (s->header.type == lang_input_statement_enum | |
1643 | && s->real) | |
1644 | { | |
1645 | ldfile_open_file (s); | |
5f992e62 | 1646 | |
e50d8076 NC |
1647 | if (s->the_bfd != NULL |
1648 | && bfd_check_format (s->the_bfd, bfd_object)) | |
1649 | { | |
1650 | target = bfd_get_target (s->the_bfd); | |
5f992e62 | 1651 | |
e50d8076 NC |
1652 | if (target != NULL) |
1653 | break; | |
1654 | } | |
1655 | } | |
1656 | } | |
5f992e62 | 1657 | |
e50d8076 NC |
1658 | return target; |
1659 | } | |
1660 | ||
599917b8 | 1661 | const char * |
1579bae1 | 1662 | lang_get_output_target (void) |
599917b8 JJ |
1663 | { |
1664 | const char *target; | |
1665 | ||
1666 | /* Has the user told us which output format to use? */ | |
1579bae1 | 1667 | if (output_target != NULL) |
599917b8 JJ |
1668 | return output_target; |
1669 | ||
1670 | /* No - has the current target been set to something other than | |
1671 | the default? */ | |
1672 | if (current_target != default_target) | |
1673 | return current_target; | |
1674 | ||
1675 | /* No - can we determine the format of the first input file? */ | |
1676 | target = get_first_input_target (); | |
1677 | if (target != NULL) | |
1678 | return target; | |
1679 | ||
1680 | /* Failed - use the default output target. */ | |
1681 | return default_target; | |
1682 | } | |
1683 | ||
252b5132 RH |
1684 | /* Open the output file. */ |
1685 | ||
1686 | static bfd * | |
1579bae1 | 1687 | open_output (const char *name) |
252b5132 | 1688 | { |
08da4cac | 1689 | bfd *output; |
252b5132 | 1690 | |
599917b8 | 1691 | output_target = lang_get_output_target (); |
5f992e62 | 1692 | |
08da4cac KH |
1693 | /* Has the user requested a particular endianness on the command |
1694 | line? */ | |
e50d8076 NC |
1695 | if (command_line.endian != ENDIAN_UNSET) |
1696 | { | |
08da4cac | 1697 | const bfd_target *target; |
1b69a0bf | 1698 | enum bfd_endian desired_endian; |
e50d8076 NC |
1699 | |
1700 | /* Get the chosen target. */ | |
1579bae1 | 1701 | target = bfd_search_for_target (get_target, (void *) output_target); |
e50d8076 | 1702 | |
c13b1b77 NC |
1703 | /* If the target is not supported, we cannot do anything. */ |
1704 | if (target != NULL) | |
e50d8076 | 1705 | { |
c13b1b77 NC |
1706 | if (command_line.endian == ENDIAN_BIG) |
1707 | desired_endian = BFD_ENDIAN_BIG; | |
e50d8076 | 1708 | else |
c13b1b77 | 1709 | desired_endian = BFD_ENDIAN_LITTLE; |
5f992e62 AM |
1710 | |
1711 | /* See if the target has the wrong endianness. This should | |
1712 | not happen if the linker script has provided big and | |
1713 | little endian alternatives, but some scrips don't do | |
1714 | this. */ | |
c13b1b77 | 1715 | if (target->byteorder != desired_endian) |
e50d8076 | 1716 | { |
c13b1b77 NC |
1717 | /* If it does, then see if the target provides |
1718 | an alternative with the correct endianness. */ | |
1719 | if (target->alternative_target != NULL | |
1720 | && (target->alternative_target->byteorder == desired_endian)) | |
1721 | output_target = target->alternative_target->name; | |
e50d8076 | 1722 | else |
c13b1b77 | 1723 | { |
5f992e62 AM |
1724 | /* Try to find a target as similar as possible to |
1725 | the default target, but which has the desired | |
1726 | endian characteristic. */ | |
1579bae1 AM |
1727 | bfd_search_for_target (closest_target_match, |
1728 | (void *) target); | |
5f992e62 AM |
1729 | |
1730 | /* Oh dear - we could not find any targets that | |
1731 | satisfy our requirements. */ | |
c13b1b77 NC |
1732 | if (winner == NULL) |
1733 | einfo (_("%P: warning: could not find any targets that match endianness requirement\n")); | |
1734 | else | |
1735 | output_target = winner->name; | |
1736 | } | |
e50d8076 NC |
1737 | } |
1738 | } | |
252b5132 | 1739 | } |
5f992e62 | 1740 | |
252b5132 RH |
1741 | output = bfd_openw (name, output_target); |
1742 | ||
1579bae1 | 1743 | if (output == NULL) |
252b5132 RH |
1744 | { |
1745 | if (bfd_get_error () == bfd_error_invalid_target) | |
e50d8076 NC |
1746 | einfo (_("%P%F: target %s not found\n"), output_target); |
1747 | ||
252b5132 RH |
1748 | einfo (_("%P%F: cannot open output file %s: %E\n"), name); |
1749 | } | |
1750 | ||
b34976b6 | 1751 | delete_output_file_on_failure = TRUE; |
252b5132 | 1752 | |
08da4cac KH |
1753 | #if 0 |
1754 | output->flags |= D_PAGED; | |
1755 | #endif | |
252b5132 RH |
1756 | |
1757 | if (! bfd_set_format (output, bfd_object)) | |
1758 | einfo (_("%P%F:%s: can not make object file: %E\n"), name); | |
1759 | if (! bfd_set_arch_mach (output, | |
1760 | ldfile_output_architecture, | |
1761 | ldfile_output_machine)) | |
1762 | einfo (_("%P%F:%s: can not set architecture: %E\n"), name); | |
1763 | ||
1764 | link_info.hash = bfd_link_hash_table_create (output); | |
1579bae1 | 1765 | if (link_info.hash == NULL) |
252b5132 RH |
1766 | einfo (_("%P%F: can not create link hash table: %E\n")); |
1767 | ||
1768 | bfd_set_gp_size (output, g_switch_value); | |
1769 | return output; | |
1770 | } | |
1771 | ||
252b5132 | 1772 | static void |
1579bae1 | 1773 | ldlang_open_output (lang_statement_union_type *statement) |
252b5132 RH |
1774 | { |
1775 | switch (statement->header.type) | |
1776 | { | |
1777 | case lang_output_statement_enum: | |
1579bae1 | 1778 | ASSERT (output_bfd == NULL); |
252b5132 RH |
1779 | output_bfd = open_output (statement->output_statement.name); |
1780 | ldemul_set_output_arch (); | |
1049f94e | 1781 | if (config.magic_demand_paged && !link_info.relocatable) |
252b5132 RH |
1782 | output_bfd->flags |= D_PAGED; |
1783 | else | |
1784 | output_bfd->flags &= ~D_PAGED; | |
1785 | if (config.text_read_only) | |
1786 | output_bfd->flags |= WP_TEXT; | |
1787 | else | |
1788 | output_bfd->flags &= ~WP_TEXT; | |
1789 | if (link_info.traditional_format) | |
1790 | output_bfd->flags |= BFD_TRADITIONAL_FORMAT; | |
1791 | else | |
1792 | output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; | |
1793 | break; | |
1794 | ||
1795 | case lang_target_statement_enum: | |
1796 | current_target = statement->target_statement.target; | |
1797 | break; | |
1798 | default: | |
1799 | break; | |
1800 | } | |
1801 | } | |
1802 | ||
e5caa5e0 AM |
1803 | /* Convert between addresses in bytes and sizes in octets. |
1804 | For currently supported targets, octets_per_byte is always a power | |
1805 | of two, so we can use shifts. */ | |
1806 | #define TO_ADDR(X) ((X) >> opb_shift) | |
1807 | #define TO_SIZE(X) ((X) << opb_shift) | |
1808 | ||
1809 | /* Support the above. */ | |
1810 | static unsigned int opb_shift = 0; | |
1811 | ||
1812 | static void | |
1813 | init_opb (void) | |
1814 | { | |
1815 | unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, | |
1816 | ldfile_output_machine); | |
1817 | opb_shift = 0; | |
1818 | if (x > 1) | |
1819 | while ((x & 1) == 0) | |
1820 | { | |
1821 | x >>= 1; | |
1822 | ++opb_shift; | |
1823 | } | |
1824 | ASSERT (x == 1); | |
1825 | } | |
1826 | ||
252b5132 RH |
1827 | /* Open all the input files. */ |
1828 | ||
1829 | static void | |
1579bae1 | 1830 | open_input_bfds (lang_statement_union_type *s, bfd_boolean force) |
252b5132 | 1831 | { |
1579bae1 | 1832 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
1833 | { |
1834 | switch (s->header.type) | |
1835 | { | |
1836 | case lang_constructors_statement_enum: | |
1837 | open_input_bfds (constructor_list.head, force); | |
1838 | break; | |
1839 | case lang_output_section_statement_enum: | |
1840 | open_input_bfds (s->output_section_statement.children.head, force); | |
1841 | break; | |
1842 | case lang_wild_statement_enum: | |
08da4cac | 1843 | /* Maybe we should load the file's symbols. */ |
252b5132 RH |
1844 | if (s->wild_statement.filename |
1845 | && ! wildcardp (s->wild_statement.filename)) | |
4a43e768 | 1846 | lookup_name (s->wild_statement.filename); |
252b5132 RH |
1847 | open_input_bfds (s->wild_statement.children.head, force); |
1848 | break; | |
1849 | case lang_group_statement_enum: | |
1850 | { | |
1851 | struct bfd_link_hash_entry *undefs; | |
1852 | ||
1853 | /* We must continually search the entries in the group | |
08da4cac KH |
1854 | until no new symbols are added to the list of undefined |
1855 | symbols. */ | |
252b5132 RH |
1856 | |
1857 | do | |
1858 | { | |
1859 | undefs = link_info.hash->undefs_tail; | |
b34976b6 | 1860 | open_input_bfds (s->group_statement.children.head, TRUE); |
252b5132 RH |
1861 | } |
1862 | while (undefs != link_info.hash->undefs_tail); | |
1863 | } | |
1864 | break; | |
1865 | case lang_target_statement_enum: | |
1866 | current_target = s->target_statement.target; | |
1867 | break; | |
1868 | case lang_input_statement_enum: | |
e50d8076 | 1869 | if (s->input_statement.real) |
252b5132 RH |
1870 | { |
1871 | lang_statement_list_type add; | |
1872 | ||
1873 | s->input_statement.target = current_target; | |
1874 | ||
1875 | /* If we are being called from within a group, and this | |
1876 | is an archive which has already been searched, then | |
cd4c806a L |
1877 | force it to be researched unless the whole archive |
1878 | has been loaded already. */ | |
252b5132 | 1879 | if (force |
cd4c806a | 1880 | && !s->input_statement.whole_archive |
252b5132 RH |
1881 | && s->input_statement.loaded |
1882 | && bfd_check_format (s->input_statement.the_bfd, | |
1883 | bfd_archive)) | |
b34976b6 | 1884 | s->input_statement.loaded = FALSE; |
252b5132 | 1885 | |
d1778b88 | 1886 | lang_list_init (&add); |
1276aefa | 1887 | |
6770ec8c | 1888 | if (! load_symbols (&s->input_statement, &add)) |
b34976b6 | 1889 | config.make_executable = FALSE; |
252b5132 RH |
1890 | |
1891 | if (add.head != NULL) | |
1892 | { | |
bba1a0c0 AM |
1893 | *add.tail = s->header.next; |
1894 | s->header.next = add.head; | |
252b5132 RH |
1895 | } |
1896 | } | |
1897 | break; | |
1898 | default: | |
1899 | break; | |
1900 | } | |
1901 | } | |
1902 | } | |
1903 | ||
08da4cac KH |
1904 | /* If there are [COMMONS] statements, put a wild one into the bss |
1905 | section. */ | |
252b5132 RH |
1906 | |
1907 | static void | |
1579bae1 | 1908 | lang_reasonable_defaults (void) |
252b5132 RH |
1909 | { |
1910 | #if 0 | |
1911 | lang_output_section_statement_lookup (".text"); | |
1912 | lang_output_section_statement_lookup (".data"); | |
1913 | ||
08da4cac | 1914 | default_common_section = lang_output_section_statement_lookup (".bss"); |
252b5132 | 1915 | |
7c519c12 | 1916 | if (!placed_commons) |
252b5132 RH |
1917 | { |
1918 | lang_wild_statement_type *new = | |
1919 | new_stat (lang_wild_statement, | |
1920 | &default_common_section->children); | |
1921 | ||
1922 | new->section_name = "COMMON"; | |
1579bae1 | 1923 | new->filename = NULL; |
252b5132 RH |
1924 | lang_list_init (&new->children); |
1925 | } | |
1926 | #endif | |
252b5132 RH |
1927 | } |
1928 | ||
420e579c HPN |
1929 | /* Add a symbol to a hash of symbols used in DEFINED (NAME) expressions. */ |
1930 | ||
1931 | void | |
1932 | lang_track_definedness (const char *name) | |
1933 | { | |
1934 | if (bfd_hash_lookup (&lang_definedness_table, name, TRUE, FALSE) == NULL) | |
1935 | einfo (_("%P%F: bfd_hash_lookup failed creating symbol %s\n"), name); | |
1936 | } | |
1937 | ||
1938 | /* New-function for the definedness hash table. */ | |
1939 | ||
1940 | static struct bfd_hash_entry * | |
1941 | lang_definedness_newfunc (struct bfd_hash_entry *entry, | |
1942 | struct bfd_hash_table *table ATTRIBUTE_UNUSED, | |
1943 | const char *name ATTRIBUTE_UNUSED) | |
1944 | { | |
1945 | struct lang_definedness_hash_entry *ret | |
1946 | = (struct lang_definedness_hash_entry *) entry; | |
1947 | ||
1948 | if (ret == NULL) | |
1949 | ret = (struct lang_definedness_hash_entry *) | |
1950 | bfd_hash_allocate (table, sizeof (struct lang_definedness_hash_entry)); | |
1951 | ||
1952 | if (ret == NULL) | |
1953 | einfo (_("%P%F: bfd_hash_allocate failed creating symbol %s\n"), name); | |
1954 | ||
1955 | ret->iteration = -1; | |
1956 | return &ret->root; | |
1957 | } | |
1958 | ||
1959 | /* Return the iteration when the definition of NAME was last updated. A | |
1960 | value of -1 means that the symbol is not defined in the linker script | |
1961 | or the command line, but may be defined in the linker symbol table. */ | |
1962 | ||
1963 | int | |
1964 | lang_symbol_definition_iteration (const char *name) | |
1965 | { | |
1966 | struct lang_definedness_hash_entry *defentry | |
1967 | = (struct lang_definedness_hash_entry *) | |
1968 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
1969 | ||
1970 | /* We've already created this one on the presence of DEFINED in the | |
1971 | script, so it can't be NULL unless something is borked elsewhere in | |
1972 | the code. */ | |
1973 | if (defentry == NULL) | |
1974 | FAIL (); | |
1975 | ||
1976 | return defentry->iteration; | |
1977 | } | |
1978 | ||
1979 | /* Update the definedness state of NAME. */ | |
1980 | ||
1981 | void | |
1982 | lang_update_definedness (const char *name, struct bfd_link_hash_entry *h) | |
1983 | { | |
1984 | struct lang_definedness_hash_entry *defentry | |
1985 | = (struct lang_definedness_hash_entry *) | |
1986 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
1987 | ||
1988 | /* We don't keep track of symbols not tested with DEFINED. */ | |
1989 | if (defentry == NULL) | |
1990 | return; | |
1991 | ||
1992 | /* If the symbol was already defined, and not from an earlier statement | |
1993 | iteration, don't update the definedness iteration, because that'd | |
1994 | make the symbol seem defined in the linker script at this point, and | |
1995 | it wasn't; it was defined in some object. If we do anyway, DEFINED | |
1996 | would start to yield false before this point and the construct "sym = | |
1997 | DEFINED (sym) ? sym : X;" would change sym to X despite being defined | |
1998 | in an object. */ | |
1999 | if (h->type != bfd_link_hash_undefined | |
2000 | && h->type != bfd_link_hash_common | |
2001 | && h->type != bfd_link_hash_new | |
2002 | && defentry->iteration == -1) | |
2003 | return; | |
2004 | ||
2005 | defentry->iteration = lang_statement_iteration; | |
2006 | } | |
2007 | ||
08da4cac | 2008 | /* Add the supplied name to the symbol table as an undefined reference. |
fcf0e35b AM |
2009 | This is a two step process as the symbol table doesn't even exist at |
2010 | the time the ld command line is processed. First we put the name | |
2011 | on a list, then, once the output file has been opened, transfer the | |
2012 | name to the symbol table. */ | |
2013 | ||
e3e942e9 | 2014 | typedef struct bfd_sym_chain ldlang_undef_chain_list_type; |
252b5132 | 2015 | |
e3e942e9 | 2016 | #define ldlang_undef_chain_list_head entry_symbol.next |
252b5132 RH |
2017 | |
2018 | void | |
1579bae1 | 2019 | ldlang_add_undef (const char *const name) |
252b5132 RH |
2020 | { |
2021 | ldlang_undef_chain_list_type *new = | |
1579bae1 | 2022 | stat_alloc (sizeof (ldlang_undef_chain_list_type)); |
252b5132 RH |
2023 | |
2024 | new->next = ldlang_undef_chain_list_head; | |
2025 | ldlang_undef_chain_list_head = new; | |
2026 | ||
d1b2b2dc | 2027 | new->name = xstrdup (name); |
fcf0e35b AM |
2028 | |
2029 | if (output_bfd != NULL) | |
2030 | insert_undefined (new->name); | |
2031 | } | |
2032 | ||
2033 | /* Insert NAME as undefined in the symbol table. */ | |
2034 | ||
2035 | static void | |
1579bae1 | 2036 | insert_undefined (const char *name) |
fcf0e35b AM |
2037 | { |
2038 | struct bfd_link_hash_entry *h; | |
2039 | ||
b34976b6 | 2040 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE); |
1579bae1 | 2041 | if (h == NULL) |
fcf0e35b AM |
2042 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
2043 | if (h->type == bfd_link_hash_new) | |
2044 | { | |
2045 | h->type = bfd_link_hash_undefined; | |
2046 | h->u.undef.abfd = NULL; | |
2047 | bfd_link_add_undef (link_info.hash, h); | |
2048 | } | |
252b5132 RH |
2049 | } |
2050 | ||
2051 | /* Run through the list of undefineds created above and place them | |
2052 | into the linker hash table as undefined symbols belonging to the | |
08da4cac KH |
2053 | script file. */ |
2054 | ||
252b5132 | 2055 | static void |
1579bae1 | 2056 | lang_place_undefineds (void) |
252b5132 RH |
2057 | { |
2058 | ldlang_undef_chain_list_type *ptr; | |
2059 | ||
1579bae1 AM |
2060 | for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next) |
2061 | insert_undefined (ptr->name); | |
252b5132 RH |
2062 | } |
2063 | ||
396a2467 | 2064 | /* Open input files and attach to output sections. */ |
08da4cac | 2065 | |
252b5132 | 2066 | static void |
1579bae1 AM |
2067 | map_input_to_output_sections |
2068 | (lang_statement_union_type *s, const char *target, | |
2069 | lang_output_section_statement_type *output_section_statement) | |
252b5132 | 2070 | { |
1579bae1 | 2071 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
2072 | { |
2073 | switch (s->header.type) | |
2074 | { | |
252b5132 | 2075 | case lang_wild_statement_enum: |
b6bf44ba | 2076 | wild (&s->wild_statement, target, output_section_statement); |
abc6ab0a | 2077 | break; |
252b5132 RH |
2078 | case lang_constructors_statement_enum: |
2079 | map_input_to_output_sections (constructor_list.head, | |
2080 | target, | |
2081 | output_section_statement); | |
2082 | break; | |
2083 | case lang_output_section_statement_enum: | |
2084 | map_input_to_output_sections (s->output_section_statement.children.head, | |
2085 | target, | |
2086 | &s->output_section_statement); | |
2087 | break; | |
2088 | case lang_output_statement_enum: | |
2089 | break; | |
2090 | case lang_target_statement_enum: | |
2091 | target = s->target_statement.target; | |
2092 | break; | |
2093 | case lang_group_statement_enum: | |
2094 | map_input_to_output_sections (s->group_statement.children.head, | |
2095 | target, | |
2096 | output_section_statement); | |
2097 | break; | |
384d938f NS |
2098 | case lang_data_statement_enum: |
2099 | /* Make sure that any sections mentioned in the expression | |
2100 | are initialized. */ | |
2101 | exp_init_os (s->data_statement.exp); | |
2102 | /* FALLTHROUGH */ | |
252b5132 RH |
2103 | case lang_fill_statement_enum: |
2104 | case lang_input_section_enum: | |
2105 | case lang_object_symbols_statement_enum: | |
252b5132 RH |
2106 | case lang_reloc_statement_enum: |
2107 | case lang_padding_statement_enum: | |
2108 | case lang_input_statement_enum: | |
2109 | if (output_section_statement != NULL | |
2110 | && output_section_statement->bfd_section == NULL) | |
2111 | init_os (output_section_statement); | |
2112 | break; | |
2113 | case lang_assignment_statement_enum: | |
2114 | if (output_section_statement != NULL | |
2115 | && output_section_statement->bfd_section == NULL) | |
2116 | init_os (output_section_statement); | |
2117 | ||
2118 | /* Make sure that any sections mentioned in the assignment | |
08da4cac | 2119 | are initialized. */ |
252b5132 RH |
2120 | exp_init_os (s->assignment_statement.exp); |
2121 | break; | |
2122 | case lang_afile_asection_pair_statement_enum: | |
2123 | FAIL (); | |
2124 | break; | |
2125 | case lang_address_statement_enum: | |
08da4cac | 2126 | /* Mark the specified section with the supplied address. */ |
252b5132 RH |
2127 | { |
2128 | lang_output_section_statement_type *os = | |
2129 | lang_output_section_statement_lookup | |
2130 | (s->address_statement.section_name); | |
2131 | ||
2132 | if (os->bfd_section == NULL) | |
2133 | init_os (os); | |
2134 | os->addr_tree = s->address_statement.address; | |
2135 | } | |
2136 | break; | |
2137 | } | |
2138 | } | |
2139 | } | |
2140 | ||
4bd5a393 AM |
2141 | /* An output section might have been removed after its statement was |
2142 | added. For example, ldemul_before_allocation can remove dynamic | |
2143 | sections if they turn out to be not needed. Clean them up here. */ | |
2144 | ||
2145 | static void | |
1579bae1 | 2146 | strip_excluded_output_sections (void) |
4bd5a393 AM |
2147 | { |
2148 | lang_statement_union_type *u; | |
2149 | ||
2150 | for (u = lang_output_section_statement.head; | |
2151 | u != NULL; | |
2152 | u = u->output_section_statement.next) | |
2153 | { | |
2154 | lang_output_section_statement_type *os; | |
2155 | asection *s; | |
2156 | ||
2157 | os = &u->output_section_statement; | |
2158 | s = os->bfd_section; | |
2159 | if (s != NULL && (s->flags & SEC_EXCLUDE) != 0) | |
2160 | { | |
2161 | asection **p; | |
2162 | ||
2163 | os->bfd_section = NULL; | |
2164 | ||
2165 | for (p = &output_bfd->sections; *p; p = &(*p)->next) | |
2166 | if (*p == s) | |
2167 | { | |
2168 | bfd_section_list_remove (output_bfd, p); | |
2169 | output_bfd->section_count--; | |
2170 | break; | |
2171 | } | |
2172 | } | |
2173 | } | |
2174 | } | |
2175 | ||
252b5132 | 2176 | static void |
1579bae1 AM |
2177 | print_output_section_statement |
2178 | (lang_output_section_statement_type *output_section_statement) | |
252b5132 RH |
2179 | { |
2180 | asection *section = output_section_statement->bfd_section; | |
2181 | int len; | |
2182 | ||
2183 | if (output_section_statement != abs_output_section) | |
2184 | { | |
2185 | minfo ("\n%s", output_section_statement->name); | |
2186 | ||
2187 | if (section != NULL) | |
2188 | { | |
2189 | print_dot = section->vma; | |
2190 | ||
2191 | len = strlen (output_section_statement->name); | |
2192 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2193 | { | |
2194 | print_nl (); | |
2195 | len = 0; | |
2196 | } | |
2197 | while (len < SECTION_NAME_MAP_LENGTH) | |
2198 | { | |
2199 | print_space (); | |
2200 | ++len; | |
2201 | } | |
2202 | ||
2203 | minfo ("0x%V %W", section->vma, section->_raw_size); | |
2204 | ||
2205 | if (output_section_statement->load_base != NULL) | |
2206 | { | |
2207 | bfd_vma addr; | |
2208 | ||
2209 | addr = exp_get_abs_int (output_section_statement->load_base, 0, | |
2210 | "load base", lang_final_phase_enum); | |
2211 | minfo (_(" load address 0x%V"), addr); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | print_nl (); | |
2216 | } | |
2217 | ||
2218 | print_statement_list (output_section_statement->children.head, | |
2219 | output_section_statement); | |
2220 | } | |
2221 | ||
2222 | static void | |
1579bae1 AM |
2223 | print_assignment (lang_assignment_statement_type *assignment, |
2224 | lang_output_section_statement_type *output_section) | |
252b5132 RH |
2225 | { |
2226 | int i; | |
2227 | etree_value_type result; | |
2228 | ||
2229 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2230 | print_space (); | |
2231 | ||
2232 | result = exp_fold_tree (assignment->exp->assign.src, output_section, | |
2233 | lang_final_phase_enum, print_dot, &print_dot); | |
2234 | if (result.valid_p) | |
7b17f854 RS |
2235 | { |
2236 | const char *dst; | |
2237 | bfd_vma value; | |
2238 | ||
2239 | value = result.value + result.section->bfd_section->vma; | |
2240 | dst = assignment->exp->assign.dst; | |
2241 | ||
2242 | minfo ("0x%V", value); | |
2243 | if (dst[0] == '.' && dst[1] == 0) | |
2244 | print_dot = value; | |
2245 | } | |
252b5132 RH |
2246 | else |
2247 | { | |
2248 | minfo ("*undef* "); | |
2249 | #ifdef BFD64 | |
2250 | minfo (" "); | |
2251 | #endif | |
2252 | } | |
2253 | ||
2254 | minfo (" "); | |
2255 | ||
2256 | exp_print_tree (assignment->exp); | |
2257 | ||
2258 | print_nl (); | |
2259 | } | |
2260 | ||
2261 | static void | |
1579bae1 | 2262 | print_input_statement (lang_input_statement_type *statm) |
252b5132 | 2263 | { |
1579bae1 | 2264 | if (statm->filename != NULL) |
252b5132 RH |
2265 | { |
2266 | fprintf (config.map_file, "LOAD %s\n", statm->filename); | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | /* Print all symbols defined in a particular section. This is called | |
2271 | via bfd_link_hash_traverse. */ | |
2272 | ||
b34976b6 | 2273 | static bfd_boolean |
1579bae1 | 2274 | print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr) |
252b5132 | 2275 | { |
1579bae1 | 2276 | asection *sec = ptr; |
252b5132 RH |
2277 | |
2278 | if ((hash_entry->type == bfd_link_hash_defined | |
2279 | || hash_entry->type == bfd_link_hash_defweak) | |
2280 | && sec == hash_entry->u.def.section) | |
2281 | { | |
2282 | int i; | |
2283 | ||
2284 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2285 | print_space (); | |
2286 | minfo ("0x%V ", | |
2287 | (hash_entry->u.def.value | |
2288 | + hash_entry->u.def.section->output_offset | |
2289 | + hash_entry->u.def.section->output_section->vma)); | |
2290 | ||
2291 | minfo (" %T\n", hash_entry->root.string); | |
2292 | } | |
2293 | ||
b34976b6 | 2294 | return TRUE; |
252b5132 RH |
2295 | } |
2296 | ||
2297 | /* Print information about an input section to the map file. */ | |
2298 | ||
2299 | static void | |
1579bae1 | 2300 | print_input_section (lang_input_section_type *in) |
252b5132 RH |
2301 | { |
2302 | asection *i = in->section; | |
2303 | bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; | |
e5caa5e0 AM |
2304 | |
2305 | init_opb (); | |
252b5132 RH |
2306 | if (size != 0) |
2307 | { | |
2308 | print_space (); | |
2309 | ||
2310 | minfo ("%s", i->name); | |
2311 | ||
2312 | if (i->output_section != NULL) | |
2313 | { | |
2314 | int len; | |
2315 | ||
2316 | len = 1 + strlen (i->name); | |
2317 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2318 | { | |
2319 | print_nl (); | |
2320 | len = 0; | |
2321 | } | |
2322 | while (len < SECTION_NAME_MAP_LENGTH) | |
2323 | { | |
2324 | print_space (); | |
2325 | ++len; | |
2326 | } | |
2327 | ||
2328 | minfo ("0x%V %W %B\n", | |
e5caa5e0 | 2329 | i->output_section->vma + i->output_offset, TO_ADDR (size), |
252b5132 RH |
2330 | i->owner); |
2331 | ||
2332 | if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size) | |
2333 | { | |
2334 | len = SECTION_NAME_MAP_LENGTH + 3; | |
2335 | #ifdef BFD64 | |
2336 | len += 16; | |
2337 | #else | |
2338 | len += 8; | |
2339 | #endif | |
2340 | while (len > 0) | |
2341 | { | |
2342 | print_space (); | |
2343 | --len; | |
2344 | } | |
2345 | ||
2346 | minfo (_("%W (size before relaxing)\n"), i->_raw_size); | |
2347 | } | |
2348 | ||
1579bae1 | 2349 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, i); |
252b5132 | 2350 | |
e5caa5e0 AM |
2351 | print_dot = (i->output_section->vma + i->output_offset |
2352 | + TO_ADDR (size)); | |
252b5132 RH |
2353 | } |
2354 | } | |
2355 | } | |
2356 | ||
2357 | static void | |
1579bae1 | 2358 | print_fill_statement (lang_fill_statement_type *fill) |
252b5132 | 2359 | { |
2c382fb6 AM |
2360 | size_t size; |
2361 | unsigned char *p; | |
2362 | fputs (" FILL mask 0x", config.map_file); | |
2363 | for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--) | |
2364 | fprintf (config.map_file, "%02x", *p); | |
2365 | fputs ("\n", config.map_file); | |
252b5132 RH |
2366 | } |
2367 | ||
2368 | static void | |
1579bae1 | 2369 | print_data_statement (lang_data_statement_type *data) |
252b5132 RH |
2370 | { |
2371 | int i; | |
2372 | bfd_vma addr; | |
2373 | bfd_size_type size; | |
2374 | const char *name; | |
2375 | ||
e5caa5e0 | 2376 | init_opb (); |
252b5132 RH |
2377 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
2378 | print_space (); | |
2379 | ||
2380 | addr = data->output_vma; | |
2381 | if (data->output_section != NULL) | |
2382 | addr += data->output_section->vma; | |
2383 | ||
2384 | switch (data->type) | |
2385 | { | |
2386 | default: | |
2387 | abort (); | |
2388 | case BYTE: | |
2389 | size = BYTE_SIZE; | |
2390 | name = "BYTE"; | |
2391 | break; | |
2392 | case SHORT: | |
2393 | size = SHORT_SIZE; | |
2394 | name = "SHORT"; | |
2395 | break; | |
2396 | case LONG: | |
2397 | size = LONG_SIZE; | |
2398 | name = "LONG"; | |
2399 | break; | |
2400 | case QUAD: | |
2401 | size = QUAD_SIZE; | |
2402 | name = "QUAD"; | |
2403 | break; | |
2404 | case SQUAD: | |
2405 | size = QUAD_SIZE; | |
2406 | name = "SQUAD"; | |
2407 | break; | |
2408 | } | |
2409 | ||
2410 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); | |
2411 | ||
2412 | if (data->exp->type.node_class != etree_value) | |
2413 | { | |
2414 | print_space (); | |
2415 | exp_print_tree (data->exp); | |
2416 | } | |
2417 | ||
2418 | print_nl (); | |
2419 | ||
e5caa5e0 | 2420 | print_dot = addr + TO_ADDR (size); |
252b5132 RH |
2421 | } |
2422 | ||
2423 | /* Print an address statement. These are generated by options like | |
2424 | -Ttext. */ | |
2425 | ||
2426 | static void | |
1579bae1 | 2427 | print_address_statement (lang_address_statement_type *address) |
252b5132 RH |
2428 | { |
2429 | minfo (_("Address of section %s set to "), address->section_name); | |
2430 | exp_print_tree (address->address); | |
2431 | print_nl (); | |
2432 | } | |
2433 | ||
2434 | /* Print a reloc statement. */ | |
2435 | ||
2436 | static void | |
1579bae1 | 2437 | print_reloc_statement (lang_reloc_statement_type *reloc) |
252b5132 RH |
2438 | { |
2439 | int i; | |
2440 | bfd_vma addr; | |
2441 | bfd_size_type size; | |
2442 | ||
e5caa5e0 | 2443 | init_opb (); |
252b5132 RH |
2444 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
2445 | print_space (); | |
2446 | ||
2447 | addr = reloc->output_vma; | |
2448 | if (reloc->output_section != NULL) | |
2449 | addr += reloc->output_section->vma; | |
2450 | ||
2451 | size = bfd_get_reloc_size (reloc->howto); | |
2452 | ||
2453 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); | |
2454 | ||
2455 | if (reloc->name != NULL) | |
2456 | minfo ("%s+", reloc->name); | |
2457 | else | |
2458 | minfo ("%s+", reloc->section->name); | |
2459 | ||
2460 | exp_print_tree (reloc->addend_exp); | |
2461 | ||
2462 | print_nl (); | |
2463 | ||
e5caa5e0 | 2464 | print_dot = addr + TO_ADDR (size); |
5f992e62 | 2465 | } |
252b5132 RH |
2466 | |
2467 | static void | |
1579bae1 | 2468 | print_padding_statement (lang_padding_statement_type *s) |
252b5132 RH |
2469 | { |
2470 | int len; | |
2471 | bfd_vma addr; | |
2472 | ||
e5caa5e0 | 2473 | init_opb (); |
252b5132 RH |
2474 | minfo (" *fill*"); |
2475 | ||
2476 | len = sizeof " *fill*" - 1; | |
2477 | while (len < SECTION_NAME_MAP_LENGTH) | |
2478 | { | |
2479 | print_space (); | |
2480 | ++len; | |
2481 | } | |
2482 | ||
2483 | addr = s->output_offset; | |
2484 | if (s->output_section != NULL) | |
2485 | addr += s->output_section->vma; | |
2c382fb6 | 2486 | minfo ("0x%V %W ", addr, s->size); |
252b5132 | 2487 | |
2c382fb6 AM |
2488 | if (s->fill->size != 0) |
2489 | { | |
2490 | size_t size; | |
2491 | unsigned char *p; | |
2492 | for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--) | |
2493 | fprintf (config.map_file, "%02x", *p); | |
2494 | } | |
252b5132 RH |
2495 | |
2496 | print_nl (); | |
2497 | ||
e5caa5e0 | 2498 | print_dot = addr + TO_ADDR (s->size); |
252b5132 RH |
2499 | } |
2500 | ||
2501 | static void | |
1579bae1 AM |
2502 | print_wild_statement (lang_wild_statement_type *w, |
2503 | lang_output_section_statement_type *os) | |
252b5132 | 2504 | { |
b6bf44ba AM |
2505 | struct wildcard_list *sec; |
2506 | ||
252b5132 RH |
2507 | print_space (); |
2508 | ||
2509 | if (w->filenames_sorted) | |
2510 | minfo ("SORT("); | |
08da4cac | 2511 | if (w->filename != NULL) |
252b5132 RH |
2512 | minfo ("%s", w->filename); |
2513 | else | |
2514 | minfo ("*"); | |
2515 | if (w->filenames_sorted) | |
2516 | minfo (")"); | |
2517 | ||
2518 | minfo ("("); | |
b6bf44ba AM |
2519 | for (sec = w->section_list; sec; sec = sec->next) |
2520 | { | |
2521 | if (sec->spec.sorted) | |
2522 | minfo ("SORT("); | |
2523 | if (sec->spec.exclude_name_list != NULL) | |
2524 | { | |
2525 | name_list *tmp; | |
34786259 | 2526 | minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name); |
b6bf44ba | 2527 | for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next) |
34786259 AM |
2528 | minfo (" %s", tmp->name); |
2529 | minfo (") "); | |
b6bf44ba AM |
2530 | } |
2531 | if (sec->spec.name != NULL) | |
2532 | minfo ("%s", sec->spec.name); | |
2533 | else | |
2534 | minfo ("*"); | |
2535 | if (sec->spec.sorted) | |
2536 | minfo (")"); | |
34786259 AM |
2537 | if (sec->next) |
2538 | minfo (" "); | |
b6bf44ba | 2539 | } |
252b5132 RH |
2540 | minfo (")"); |
2541 | ||
2542 | print_nl (); | |
2543 | ||
2544 | print_statement_list (w->children.head, os); | |
2545 | } | |
2546 | ||
2547 | /* Print a group statement. */ | |
2548 | ||
2549 | static void | |
1579bae1 AM |
2550 | print_group (lang_group_statement_type *s, |
2551 | lang_output_section_statement_type *os) | |
252b5132 RH |
2552 | { |
2553 | fprintf (config.map_file, "START GROUP\n"); | |
2554 | print_statement_list (s->children.head, os); | |
2555 | fprintf (config.map_file, "END GROUP\n"); | |
2556 | } | |
2557 | ||
2558 | /* Print the list of statements in S. | |
2559 | This can be called for any statement type. */ | |
2560 | ||
2561 | static void | |
1579bae1 AM |
2562 | print_statement_list (lang_statement_union_type *s, |
2563 | lang_output_section_statement_type *os) | |
252b5132 RH |
2564 | { |
2565 | while (s != NULL) | |
2566 | { | |
2567 | print_statement (s, os); | |
bba1a0c0 | 2568 | s = s->header.next; |
252b5132 RH |
2569 | } |
2570 | } | |
2571 | ||
2572 | /* Print the first statement in statement list S. | |
2573 | This can be called for any statement type. */ | |
2574 | ||
2575 | static void | |
1579bae1 AM |
2576 | print_statement (lang_statement_union_type *s, |
2577 | lang_output_section_statement_type *os) | |
252b5132 RH |
2578 | { |
2579 | switch (s->header.type) | |
2580 | { | |
2581 | default: | |
2582 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
2583 | FAIL (); | |
2584 | break; | |
2585 | case lang_constructors_statement_enum: | |
2586 | if (constructor_list.head != NULL) | |
2587 | { | |
2588 | if (constructors_sorted) | |
2589 | minfo (" SORT (CONSTRUCTORS)\n"); | |
2590 | else | |
2591 | minfo (" CONSTRUCTORS\n"); | |
2592 | print_statement_list (constructor_list.head, os); | |
2593 | } | |
2594 | break; | |
2595 | case lang_wild_statement_enum: | |
2596 | print_wild_statement (&s->wild_statement, os); | |
2597 | break; | |
2598 | case lang_address_statement_enum: | |
2599 | print_address_statement (&s->address_statement); | |
2600 | break; | |
2601 | case lang_object_symbols_statement_enum: | |
2602 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
2603 | break; | |
2604 | case lang_fill_statement_enum: | |
2605 | print_fill_statement (&s->fill_statement); | |
2606 | break; | |
2607 | case lang_data_statement_enum: | |
2608 | print_data_statement (&s->data_statement); | |
2609 | break; | |
2610 | case lang_reloc_statement_enum: | |
2611 | print_reloc_statement (&s->reloc_statement); | |
2612 | break; | |
2613 | case lang_input_section_enum: | |
2614 | print_input_section (&s->input_section); | |
2615 | break; | |
2616 | case lang_padding_statement_enum: | |
2617 | print_padding_statement (&s->padding_statement); | |
2618 | break; | |
2619 | case lang_output_section_statement_enum: | |
2620 | print_output_section_statement (&s->output_section_statement); | |
2621 | break; | |
2622 | case lang_assignment_statement_enum: | |
2623 | print_assignment (&s->assignment_statement, os); | |
2624 | break; | |
2625 | case lang_target_statement_enum: | |
2626 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
2627 | break; | |
2628 | case lang_output_statement_enum: | |
2629 | minfo ("OUTPUT(%s", s->output_statement.name); | |
2630 | if (output_target != NULL) | |
2631 | minfo (" %s", output_target); | |
2632 | minfo (")\n"); | |
2633 | break; | |
2634 | case lang_input_statement_enum: | |
2635 | print_input_statement (&s->input_statement); | |
2636 | break; | |
2637 | case lang_group_statement_enum: | |
2638 | print_group (&s->group_statement, os); | |
2639 | break; | |
2640 | case lang_afile_asection_pair_statement_enum: | |
2641 | FAIL (); | |
2642 | break; | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | static void | |
1579bae1 | 2647 | print_statements (void) |
252b5132 RH |
2648 | { |
2649 | print_statement_list (statement_list.head, abs_output_section); | |
2650 | } | |
2651 | ||
2652 | /* Print the first N statements in statement list S to STDERR. | |
2653 | If N == 0, nothing is printed. | |
2654 | If N < 0, the entire list is printed. | |
2655 | Intended to be called from GDB. */ | |
2656 | ||
2657 | void | |
1579bae1 | 2658 | dprint_statement (lang_statement_union_type *s, int n) |
252b5132 RH |
2659 | { |
2660 | FILE *map_save = config.map_file; | |
2661 | ||
2662 | config.map_file = stderr; | |
2663 | ||
2664 | if (n < 0) | |
2665 | print_statement_list (s, abs_output_section); | |
2666 | else | |
2667 | { | |
2668 | while (s && --n >= 0) | |
2669 | { | |
2670 | print_statement (s, abs_output_section); | |
bba1a0c0 | 2671 | s = s->header.next; |
252b5132 RH |
2672 | } |
2673 | } | |
2674 | ||
2675 | config.map_file = map_save; | |
2676 | } | |
2677 | ||
b3327aad | 2678 | static void |
1579bae1 AM |
2679 | insert_pad (lang_statement_union_type **ptr, |
2680 | fill_type *fill, | |
2681 | unsigned int alignment_needed, | |
2682 | asection *output_section, | |
2683 | bfd_vma dot) | |
252b5132 | 2684 | { |
2c382fb6 | 2685 | static fill_type zero_fill = { 1, { 0 } }; |
b3327aad | 2686 | lang_statement_union_type *pad; |
b3327aad | 2687 | |
c0c330a7 | 2688 | pad = ((lang_statement_union_type *) |
2af02257 | 2689 | ((char *) ptr - offsetof (lang_statement_union_type, header.next))); |
b3327aad | 2690 | if (ptr != &statement_list.head |
2af02257 | 2691 | && pad->header.type == lang_padding_statement_enum |
b3327aad | 2692 | && pad->padding_statement.output_section == output_section) |
252b5132 | 2693 | { |
b3327aad AM |
2694 | /* Use the existing pad statement. The above test on output |
2695 | section is probably redundant, but it doesn't hurt to check. */ | |
252b5132 | 2696 | } |
b3327aad | 2697 | else |
252b5132 | 2698 | { |
b3327aad | 2699 | /* Make a new padding statement, linked into existing chain. */ |
1579bae1 | 2700 | pad = stat_alloc (sizeof (lang_padding_statement_type)); |
b3327aad AM |
2701 | pad->header.next = *ptr; |
2702 | *ptr = pad; | |
2703 | pad->header.type = lang_padding_statement_enum; | |
2704 | pad->padding_statement.output_section = output_section; | |
1579bae1 | 2705 | if (fill == NULL) |
2c382fb6 | 2706 | fill = &zero_fill; |
b3327aad | 2707 | pad->padding_statement.fill = fill; |
252b5132 | 2708 | } |
b3327aad AM |
2709 | pad->padding_statement.output_offset = dot - output_section->vma; |
2710 | pad->padding_statement.size = alignment_needed; | |
2711 | output_section->_raw_size += alignment_needed; | |
252b5132 RH |
2712 | } |
2713 | ||
08da4cac KH |
2714 | /* Work out how much this section will move the dot point. */ |
2715 | ||
252b5132 | 2716 | static bfd_vma |
1579bae1 AM |
2717 | size_input_section (lang_statement_union_type **this_ptr, |
2718 | lang_output_section_statement_type *output_section_statement, | |
2719 | fill_type *fill, | |
2720 | bfd_vma dot) | |
252b5132 RH |
2721 | { |
2722 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
2723 | asection *i = is->section; | |
2724 | ||
7c519c12 | 2725 | if (!is->ifile->just_syms_flag) |
252b5132 | 2726 | { |
b3327aad AM |
2727 | unsigned int alignment_needed; |
2728 | asection *o; | |
2729 | ||
2730 | /* Align this section first to the input sections requirement, | |
2731 | then to the output section's requirement. If this alignment | |
2732 | is greater than any seen before, then record it too. Perform | |
2733 | the alignment by inserting a magic 'padding' statement. */ | |
2734 | ||
252b5132 | 2735 | if (output_section_statement->subsection_alignment != -1) |
b3327aad AM |
2736 | i->alignment_power = output_section_statement->subsection_alignment; |
2737 | ||
2738 | o = output_section_statement->bfd_section; | |
2739 | if (o->alignment_power < i->alignment_power) | |
2740 | o->alignment_power = i->alignment_power; | |
252b5132 | 2741 | |
b3327aad AM |
2742 | alignment_needed = align_power (dot, i->alignment_power) - dot; |
2743 | ||
2744 | if (alignment_needed != 0) | |
2745 | { | |
e5caa5e0 | 2746 | insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot); |
b3327aad AM |
2747 | dot += alignment_needed; |
2748 | } | |
252b5132 | 2749 | |
08da4cac | 2750 | /* Remember where in the output section this input section goes. */ |
252b5132 | 2751 | |
b3327aad | 2752 | i->output_offset = dot - o->vma; |
252b5132 | 2753 | |
08da4cac | 2754 | /* Mark how big the output section must be to contain this now. */ |
252b5132 | 2755 | if (i->_cooked_size != 0) |
e5caa5e0 | 2756 | dot += TO_ADDR (i->_cooked_size); |
252b5132 | 2757 | else |
e5caa5e0 AM |
2758 | dot += TO_ADDR (i->_raw_size); |
2759 | o->_raw_size = TO_SIZE (dot - o->vma); | |
252b5132 RH |
2760 | } |
2761 | else | |
2762 | { | |
2763 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; | |
2764 | } | |
2765 | ||
2766 | return dot; | |
2767 | } | |
2768 | ||
33275c22 | 2769 | #define IGNORE_SECTION(bfd, s) \ |
e5caec89 NS |
2770 | (((bfd_get_section_flags (bfd, s) & SEC_THREAD_LOCAL) \ |
2771 | ? ((bfd_get_section_flags (bfd, s) & (SEC_LOAD | SEC_NEVER_LOAD)) \ | |
2772 | != SEC_LOAD) \ | |
2773 | : ((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_NEVER_LOAD)) \ | |
2774 | != SEC_ALLOC)) \ | |
33275c22 | 2775 | || bfd_section_size (bfd, s) == 0) |
d1778b88 | 2776 | |
252b5132 RH |
2777 | /* Check to see if any allocated sections overlap with other allocated |
2778 | sections. This can happen when the linker script specifically specifies | |
2779 | the output section addresses of the two sections. */ | |
08da4cac | 2780 | |
252b5132 | 2781 | static void |
1579bae1 | 2782 | lang_check_section_addresses (void) |
252b5132 | 2783 | { |
08da4cac | 2784 | asection *s; |
252b5132 RH |
2785 | |
2786 | /* Scan all sections in the output list. */ | |
2787 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
33275c22 | 2788 | { |
08da4cac | 2789 | asection *os; |
5f992e62 | 2790 | |
33275c22 NC |
2791 | /* Ignore sections which are not loaded or which have no contents. */ |
2792 | if (IGNORE_SECTION (output_bfd, s)) | |
2793 | continue; | |
5f992e62 | 2794 | |
33275c22 NC |
2795 | /* Once we reach section 's' stop our seach. This prevents two |
2796 | warning messages from being produced, one for 'section A overlaps | |
2797 | section B' and one for 'section B overlaps section A'. */ | |
2798 | for (os = output_bfd->sections; os != s; os = os->next) | |
2799 | { | |
2800 | bfd_vma s_start; | |
2801 | bfd_vma s_end; | |
2802 | bfd_vma os_start; | |
2803 | bfd_vma os_end; | |
5f992e62 | 2804 | |
33275c22 NC |
2805 | /* Only consider loadable sections with real contents. */ |
2806 | if (IGNORE_SECTION (output_bfd, os)) | |
2807 | continue; | |
252b5132 | 2808 | |
33275c22 NC |
2809 | /* We must check the sections' LMA addresses not their |
2810 | VMA addresses because overlay sections can have | |
2811 | overlapping VMAs but they must have distinct LMAs. */ | |
e5caa5e0 | 2812 | s_start = bfd_section_lma (output_bfd, s); |
33275c22 | 2813 | os_start = bfd_section_lma (output_bfd, os); |
e5caa5e0 AM |
2814 | s_end = s_start + TO_ADDR (bfd_section_size (output_bfd, s)) - 1; |
2815 | os_end = os_start + TO_ADDR (bfd_section_size (output_bfd, os)) - 1; | |
5f992e62 | 2816 | |
33275c22 NC |
2817 | /* Look for an overlap. */ |
2818 | if ((s_end < os_start) || (s_start > os_end)) | |
2819 | continue; | |
5f992e62 | 2820 | |
33275c22 | 2821 | einfo ( |
252b5132 | 2822 | _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"), |
33275c22 | 2823 | s->name, s_start, s_end, os->name, os_start, os_end); |
5f992e62 | 2824 | |
33275c22 NC |
2825 | /* Once we have found one overlap for this section, |
2826 | stop looking for others. */ | |
2827 | break; | |
2828 | } | |
2829 | } | |
252b5132 RH |
2830 | } |
2831 | ||
562d3460 TW |
2832 | /* Make sure the new address is within the region. We explicitly permit the |
2833 | current address to be at the exact end of the region when the address is | |
2834 | non-zero, in case the region is at the end of addressable memory and the | |
5f992e62 | 2835 | calculation wraps around. */ |
562d3460 TW |
2836 | |
2837 | static void | |
1579bae1 | 2838 | os_region_check (lang_output_section_statement_type *os, |
6bdafbeb | 2839 | lang_memory_region_type *region, |
1579bae1 AM |
2840 | etree_type *tree, |
2841 | bfd_vma base) | |
562d3460 TW |
2842 | { |
2843 | if ((region->current < region->origin | |
2844 | || (region->current - region->origin > region->length)) | |
2845 | && ((region->current != region->origin + region->length) | |
b7a26f91 | 2846 | || base == 0)) |
562d3460 | 2847 | { |
1579bae1 | 2848 | if (tree != NULL) |
b7a26f91 KH |
2849 | { |
2850 | einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"), | |
2851 | region->current, | |
2852 | os->bfd_section->owner, | |
2853 | os->bfd_section->name, | |
2854 | region->name); | |
2855 | } | |
562d3460 | 2856 | else |
b7a26f91 KH |
2857 | { |
2858 | einfo (_("%X%P: region %s is full (%B section %s)\n"), | |
2859 | region->name, | |
2860 | os->bfd_section->owner, | |
2861 | os->bfd_section->name); | |
2862 | } | |
562d3460 TW |
2863 | /* Reset the region pointer. */ |
2864 | region->current = region->origin; | |
2865 | } | |
2866 | } | |
2867 | ||
252b5132 RH |
2868 | /* Set the sizes for all the output sections. */ |
2869 | ||
2d20f7bf | 2870 | static bfd_vma |
1579bae1 AM |
2871 | lang_size_sections_1 |
2872 | (lang_statement_union_type *s, | |
2873 | lang_output_section_statement_type *output_section_statement, | |
2874 | lang_statement_union_type **prev, | |
2875 | fill_type *fill, | |
2876 | bfd_vma dot, | |
2877 | bfd_boolean *relax, | |
2878 | bfd_boolean check_regions) | |
252b5132 RH |
2879 | { |
2880 | /* Size up the sections from their constituent parts. */ | |
1579bae1 | 2881 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
2882 | { |
2883 | switch (s->header.type) | |
2884 | { | |
2885 | case lang_output_section_statement_enum: | |
2886 | { | |
2887 | bfd_vma after; | |
d1778b88 | 2888 | lang_output_section_statement_type *os; |
252b5132 | 2889 | |
d1778b88 | 2890 | os = &s->output_section_statement; |
252b5132 RH |
2891 | if (os->bfd_section == NULL) |
2892 | /* This section was never actually created. */ | |
2893 | break; | |
2894 | ||
2895 | /* If this is a COFF shared library section, use the size and | |
2896 | address from the input section. FIXME: This is COFF | |
2897 | specific; it would be cleaner if there were some other way | |
2898 | to do this, but nothing simple comes to mind. */ | |
2899 | if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
2900 | { | |
08da4cac | 2901 | asection *input; |
252b5132 RH |
2902 | |
2903 | if (os->children.head == NULL | |
bba1a0c0 | 2904 | || os->children.head->header.next != NULL |
252b5132 RH |
2905 | || os->children.head->header.type != lang_input_section_enum) |
2906 | einfo (_("%P%X: Internal error on COFF shared library section %s\n"), | |
2907 | os->name); | |
2908 | ||
2909 | input = os->children.head->input_section.section; | |
2910 | bfd_set_section_vma (os->bfd_section->owner, | |
2911 | os->bfd_section, | |
2912 | bfd_section_vma (input->owner, input)); | |
2913 | os->bfd_section->_raw_size = input->_raw_size; | |
2914 | break; | |
2915 | } | |
2916 | ||
2917 | if (bfd_is_abs_section (os->bfd_section)) | |
2918 | { | |
2919 | /* No matter what happens, an abs section starts at zero. */ | |
2920 | ASSERT (os->bfd_section->vma == 0); | |
2921 | } | |
2922 | else | |
2923 | { | |
1579bae1 | 2924 | if (os->addr_tree == NULL) |
252b5132 RH |
2925 | { |
2926 | /* No address specified for this section, get one | |
2927 | from the region specification. */ | |
1579bae1 | 2928 | if (os->region == NULL |
252b5132 RH |
2929 | || (((bfd_get_section_flags (output_bfd, os->bfd_section) |
2930 | & (SEC_ALLOC | SEC_LOAD)) != 0) | |
2931 | && os->region->name[0] == '*' | |
a747ee4d | 2932 | && strcmp (os->region->name, DEFAULT_MEMORY_REGION) == 0)) |
252b5132 RH |
2933 | { |
2934 | os->region = lang_memory_default (os->bfd_section); | |
2935 | } | |
2936 | ||
2937 | /* If a loadable section is using the default memory | |
2938 | region, and some non default memory regions were | |
66184979 | 2939 | defined, issue an error message. */ |
a7f18fb3 | 2940 | if (!IGNORE_SECTION (output_bfd, os->bfd_section) |
1049f94e | 2941 | && ! link_info.relocatable |
cf888e70 | 2942 | && check_regions |
a747ee4d | 2943 | && strcmp (os->region->name, DEFAULT_MEMORY_REGION) == 0 |
252b5132 | 2944 | && lang_memory_region_list != NULL |
d1778b88 | 2945 | && (strcmp (lang_memory_region_list->name, |
a747ee4d | 2946 | DEFAULT_MEMORY_REGION) != 0 |
252b5132 | 2947 | || lang_memory_region_list->next != NULL)) |
66184979 NC |
2948 | { |
2949 | /* By default this is an error rather than just a | |
2950 | warning because if we allocate the section to the | |
2951 | default memory region we can end up creating an | |
07f3b6ad KH |
2952 | excessively large binary, or even seg faulting when |
2953 | attempting to perform a negative seek. See | |
1579bae1 | 2954 | http://sources.redhat.com/ml/binutils/2003-04/msg00423.html |
66184979 NC |
2955 | for an example of this. This behaviour can be |
2956 | overridden by the using the --no-check-sections | |
2957 | switch. */ | |
2958 | if (command_line.check_section_addresses) | |
2959 | einfo (_("%P%F: error: no memory region specified for loadable section `%s'\n"), | |
2960 | bfd_get_section_name (output_bfd, | |
2961 | os->bfd_section)); | |
2962 | else | |
2963 | einfo (_("%P: warning: no memory region specified for loadable section `%s'\n"), | |
2964 | bfd_get_section_name (output_bfd, | |
2965 | os->bfd_section)); | |
2966 | } | |
252b5132 RH |
2967 | |
2968 | dot = os->region->current; | |
5f992e62 | 2969 | |
252b5132 RH |
2970 | if (os->section_alignment == -1) |
2971 | { | |
2972 | bfd_vma olddot; | |
2973 | ||
2974 | olddot = dot; | |
d1778b88 AM |
2975 | dot = align_power (dot, |
2976 | os->bfd_section->alignment_power); | |
252b5132 RH |
2977 | |
2978 | if (dot != olddot && config.warn_section_align) | |
2979 | einfo (_("%P: warning: changing start of section %s by %u bytes\n"), | |
2980 | os->name, (unsigned int) (dot - olddot)); | |
2981 | } | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | etree_value_type r; | |
2986 | ||
1b493742 | 2987 | os->processed = -1; |
252b5132 RH |
2988 | r = exp_fold_tree (os->addr_tree, |
2989 | abs_output_section, | |
2990 | lang_allocating_phase_enum, | |
2991 | dot, &dot); | |
1b493742 NS |
2992 | os->processed = 0; |
2993 | ||
7c519c12 | 2994 | if (!r.valid_p) |
1b493742 | 2995 | einfo (_("%F%S: non constant or forward reference address expression for section %s\n"), |
7c519c12 AM |
2996 | os->name); |
2997 | ||
252b5132 RH |
2998 | dot = r.value + r.section->bfd_section->vma; |
2999 | } | |
5f992e62 | 3000 | |
252b5132 RH |
3001 | /* The section starts here. |
3002 | First, align to what the section needs. */ | |
3003 | ||
3004 | if (os->section_alignment != -1) | |
3005 | dot = align_power (dot, os->section_alignment); | |
3006 | ||
3007 | bfd_set_section_vma (0, os->bfd_section, dot); | |
5f992e62 | 3008 | |
252b5132 RH |
3009 | os->bfd_section->output_offset = 0; |
3010 | } | |
3011 | ||
2d20f7bf | 3012 | lang_size_sections_1 (os->children.head, os, &os->children.head, |
cf888e70 | 3013 | os->fill, dot, relax, check_regions); |
5f992e62 | 3014 | |
08da4cac KH |
3015 | /* Put the section within the requested block size, or |
3016 | align at the block boundary. */ | |
e5caa5e0 AM |
3017 | after = ((os->bfd_section->vma |
3018 | + TO_ADDR (os->bfd_section->_raw_size) | |
3019 | + os->block_value - 1) | |
3020 | & - (bfd_vma) os->block_value); | |
252b5132 RH |
3021 | |
3022 | if (bfd_is_abs_section (os->bfd_section)) | |
3023 | ASSERT (after == os->bfd_section->vma); | |
3024 | else | |
e5caa5e0 AM |
3025 | os->bfd_section->_raw_size |
3026 | = TO_SIZE (after - os->bfd_section->vma); | |
9f88b410 | 3027 | |
e5caec89 NS |
3028 | dot = os->bfd_section->vma; |
3029 | /* .tbss sections effectively have zero size. */ | |
3030 | if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 | |
3031 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0 | |
3032 | || link_info.relocatable) | |
3033 | dot += TO_ADDR (os->bfd_section->_raw_size); | |
3034 | ||
1b493742 | 3035 | os->processed = 1; |
252b5132 | 3036 | |
9f88b410 RS |
3037 | if (os->update_dot_tree != 0) |
3038 | exp_fold_tree (os->update_dot_tree, abs_output_section, | |
3039 | lang_allocating_phase_enum, dot, &dot); | |
3040 | ||
252b5132 RH |
3041 | /* Update dot in the region ? |
3042 | We only do this if the section is going to be allocated, | |
3043 | since unallocated sections do not contribute to the region's | |
13392b77 | 3044 | overall size in memory. |
5f992e62 | 3045 | |
cce4c4c5 NC |
3046 | If the SEC_NEVER_LOAD bit is not set, it will affect the |
3047 | addresses of sections after it. We have to update | |
3048 | dot. */ | |
1579bae1 | 3049 | if (os->region != NULL |
cce4c4c5 NC |
3050 | && ((bfd_get_section_flags (output_bfd, os->bfd_section) |
3051 | & SEC_NEVER_LOAD) == 0 | |
3052 | || (bfd_get_section_flags (output_bfd, os->bfd_section) | |
3053 | & (SEC_ALLOC | SEC_LOAD)))) | |
252b5132 RH |
3054 | { |
3055 | os->region->current = dot; | |
5f992e62 | 3056 | |
cf888e70 NC |
3057 | if (check_regions) |
3058 | /* Make sure the new address is within the region. */ | |
3059 | os_region_check (os, os->region, os->addr_tree, | |
3060 | os->bfd_section->vma); | |
08da4cac KH |
3061 | |
3062 | /* If there's no load address specified, use the run | |
3063 | region as the load region. */ | |
3064 | if (os->lma_region == NULL && os->load_base == NULL) | |
3065 | os->lma_region = os->region; | |
3066 | ||
ee3cc2e2 | 3067 | if (os->lma_region != NULL && os->lma_region != os->region) |
08da4cac | 3068 | { |
ee3cc2e2 RS |
3069 | /* Set load_base, which will be handled later. */ |
3070 | os->load_base = exp_intop (os->lma_region->current); | |
3071 | os->lma_region->current += | |
e5caa5e0 | 3072 | TO_ADDR (os->bfd_section->_raw_size); |
cf888e70 NC |
3073 | if (check_regions) |
3074 | os_region_check (os, os->lma_region, NULL, | |
3075 | os->bfd_section->lma); | |
08da4cac | 3076 | } |
252b5132 RH |
3077 | } |
3078 | } | |
3079 | break; | |
3080 | ||
3081 | case lang_constructors_statement_enum: | |
2d20f7bf JJ |
3082 | dot = lang_size_sections_1 (constructor_list.head, |
3083 | output_section_statement, | |
3084 | &s->wild_statement.children.head, | |
cf888e70 | 3085 | fill, dot, relax, check_regions); |
252b5132 RH |
3086 | break; |
3087 | ||
3088 | case lang_data_statement_enum: | |
3089 | { | |
3090 | unsigned int size = 0; | |
3091 | ||
08da4cac KH |
3092 | s->data_statement.output_vma = |
3093 | dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
3094 | s->data_statement.output_section = |
3095 | output_section_statement->bfd_section; | |
3096 | ||
1b493742 NS |
3097 | /* We might refer to provided symbols in the expression, and |
3098 | need to mark them as needed. */ | |
3099 | exp_fold_tree (s->data_statement.exp, abs_output_section, | |
3100 | lang_allocating_phase_enum, dot, &dot); | |
3101 | ||
252b5132 RH |
3102 | switch (s->data_statement.type) |
3103 | { | |
08da4cac KH |
3104 | default: |
3105 | abort (); | |
252b5132 RH |
3106 | case QUAD: |
3107 | case SQUAD: | |
3108 | size = QUAD_SIZE; | |
3109 | break; | |
3110 | case LONG: | |
3111 | size = LONG_SIZE; | |
3112 | break; | |
3113 | case SHORT: | |
3114 | size = SHORT_SIZE; | |
3115 | break; | |
3116 | case BYTE: | |
3117 | size = BYTE_SIZE; | |
3118 | break; | |
3119 | } | |
e5caa5e0 AM |
3120 | if (size < TO_SIZE ((unsigned) 1)) |
3121 | size = TO_SIZE ((unsigned) 1); | |
3122 | dot += TO_ADDR (size); | |
252b5132 RH |
3123 | output_section_statement->bfd_section->_raw_size += size; |
3124 | /* The output section gets contents, and then we inspect for | |
3125 | any flags set in the input script which override any ALLOC. */ | |
3126 | output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; | |
08da4cac KH |
3127 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) |
3128 | { | |
3129 | output_section_statement->bfd_section->flags |= | |
3130 | SEC_ALLOC | SEC_LOAD; | |
3131 | } | |
252b5132 RH |
3132 | } |
3133 | break; | |
3134 | ||
3135 | case lang_reloc_statement_enum: | |
3136 | { | |
3137 | int size; | |
3138 | ||
3139 | s->reloc_statement.output_vma = | |
3140 | dot - output_section_statement->bfd_section->vma; | |
3141 | s->reloc_statement.output_section = | |
3142 | output_section_statement->bfd_section; | |
3143 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
e5caa5e0 | 3144 | dot += TO_ADDR (size); |
252b5132 RH |
3145 | output_section_statement->bfd_section->_raw_size += size; |
3146 | } | |
3147 | break; | |
5f992e62 | 3148 | |
252b5132 RH |
3149 | case lang_wild_statement_enum: |
3150 | ||
2d20f7bf JJ |
3151 | dot = lang_size_sections_1 (s->wild_statement.children.head, |
3152 | output_section_statement, | |
3153 | &s->wild_statement.children.head, | |
cf888e70 | 3154 | fill, dot, relax, check_regions); |
252b5132 RH |
3155 | |
3156 | break; | |
3157 | ||
3158 | case lang_object_symbols_statement_enum: | |
3159 | link_info.create_object_symbols_section = | |
3160 | output_section_statement->bfd_section; | |
3161 | break; | |
3162 | case lang_output_statement_enum: | |
3163 | case lang_target_statement_enum: | |
3164 | break; | |
3165 | case lang_input_section_enum: | |
3166 | { | |
3167 | asection *i; | |
3168 | ||
3169 | i = (*prev)->input_section.section; | |
3170 | if (! relax) | |
3171 | { | |
3172 | if (i->_cooked_size == 0) | |
3173 | i->_cooked_size = i->_raw_size; | |
3174 | } | |
3175 | else | |
3176 | { | |
b34976b6 | 3177 | bfd_boolean again; |
252b5132 RH |
3178 | |
3179 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) | |
3180 | einfo (_("%P%F: can't relax section: %E\n")); | |
3181 | if (again) | |
b34976b6 | 3182 | *relax = TRUE; |
252b5132 | 3183 | } |
b3327aad AM |
3184 | dot = size_input_section (prev, output_section_statement, |
3185 | output_section_statement->fill, dot); | |
252b5132 RH |
3186 | } |
3187 | break; | |
3188 | case lang_input_statement_enum: | |
3189 | break; | |
3190 | case lang_fill_statement_enum: | |
08da4cac KH |
3191 | s->fill_statement.output_section = |
3192 | output_section_statement->bfd_section; | |
252b5132 RH |
3193 | |
3194 | fill = s->fill_statement.fill; | |
3195 | break; | |
3196 | case lang_assignment_statement_enum: | |
3197 | { | |
3198 | bfd_vma newdot = dot; | |
3199 | ||
3200 | exp_fold_tree (s->assignment_statement.exp, | |
3201 | output_section_statement, | |
3202 | lang_allocating_phase_enum, | |
3203 | dot, | |
3204 | &newdot); | |
3205 | ||
3206 | if (newdot != dot) | |
3207 | { | |
252b5132 RH |
3208 | if (output_section_statement == abs_output_section) |
3209 | { | |
3210 | /* If we don't have an output section, then just adjust | |
3211 | the default memory address. */ | |
a747ee4d | 3212 | lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE)->current = newdot; |
252b5132 | 3213 | } |
b3327aad | 3214 | else |
252b5132 | 3215 | { |
b3327aad AM |
3216 | /* Insert a pad after this statement. We can't |
3217 | put the pad before when relaxing, in case the | |
3218 | assignment references dot. */ | |
e5caa5e0 | 3219 | insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot), |
b3327aad AM |
3220 | output_section_statement->bfd_section, dot); |
3221 | ||
3222 | /* Don't neuter the pad below when relaxing. */ | |
3223 | s = s->header.next; | |
252b5132 RH |
3224 | } |
3225 | ||
9dfc8ab2 NC |
3226 | /* If dot is advanced, this implies that the section should |
3227 | have space allocated to it, unless the user has explicitly | |
3228 | stated that the section should never be loaded. */ | |
3229 | if (!(output_section_statement->flags & (SEC_NEVER_LOAD | SEC_ALLOC))) | |
3230 | output_section_statement->bfd_section->flags |= SEC_ALLOC; | |
3231 | ||
252b5132 RH |
3232 | dot = newdot; |
3233 | } | |
3234 | } | |
3235 | break; | |
3236 | ||
3237 | case lang_padding_statement_enum: | |
c0c330a7 AM |
3238 | /* If this is the first time lang_size_sections is called, |
3239 | we won't have any padding statements. If this is the | |
3240 | second or later passes when relaxing, we should allow | |
3241 | padding to shrink. If padding is needed on this pass, it | |
3242 | will be added back in. */ | |
3243 | s->padding_statement.size = 0; | |
6e814ff8 AM |
3244 | |
3245 | /* Make sure output_offset is valid. If relaxation shrinks | |
3246 | the section and this pad isn't needed, it's possible to | |
3247 | have output_offset larger than the final size of the | |
3248 | section. bfd_set_section_contents will complain even for | |
3249 | a pad size of zero. */ | |
3250 | s->padding_statement.output_offset | |
3251 | = dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
3252 | break; |
3253 | ||
3254 | case lang_group_statement_enum: | |
2d20f7bf JJ |
3255 | dot = lang_size_sections_1 (s->group_statement.children.head, |
3256 | output_section_statement, | |
3257 | &s->group_statement.children.head, | |
cf888e70 | 3258 | fill, dot, relax, check_regions); |
252b5132 RH |
3259 | break; |
3260 | ||
3261 | default: | |
3262 | FAIL (); | |
3263 | break; | |
3264 | ||
c0c330a7 | 3265 | /* We can only get here when relaxing is turned on. */ |
252b5132 RH |
3266 | case lang_address_statement_enum: |
3267 | break; | |
3268 | } | |
3269 | prev = &s->header.next; | |
3270 | } | |
3271 | return dot; | |
3272 | } | |
3273 | ||
2d20f7bf | 3274 | bfd_vma |
1579bae1 AM |
3275 | lang_size_sections |
3276 | (lang_statement_union_type *s, | |
3277 | lang_output_section_statement_type *output_section_statement, | |
3278 | lang_statement_union_type **prev, | |
3279 | fill_type *fill, | |
3280 | bfd_vma dot, | |
3281 | bfd_boolean *relax, | |
3282 | bfd_boolean check_regions) | |
2d20f7bf JJ |
3283 | { |
3284 | bfd_vma result; | |
86d3c9a8 | 3285 | asection *o; |
2d20f7bf | 3286 | |
420e579c HPN |
3287 | /* Callers of exp_fold_tree need to increment this. */ |
3288 | lang_statement_iteration++; | |
3289 | ||
2d20f7bf JJ |
3290 | exp_data_seg.phase = exp_dataseg_none; |
3291 | result = lang_size_sections_1 (s, output_section_statement, prev, fill, | |
cf888e70 | 3292 | dot, relax, check_regions); |
2d20f7bf JJ |
3293 | if (exp_data_seg.phase == exp_dataseg_end_seen) |
3294 | { | |
3295 | /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_END pair was seen, check whether | |
3296 | a page could be saved in the data segment. */ | |
3297 | bfd_vma first, last; | |
3298 | ||
3299 | first = -exp_data_seg.base & (exp_data_seg.pagesize - 1); | |
3300 | last = exp_data_seg.end & (exp_data_seg.pagesize - 1); | |
3301 | if (first && last | |
3302 | && ((exp_data_seg.base & ~(exp_data_seg.pagesize - 1)) | |
3303 | != (exp_data_seg.end & ~(exp_data_seg.pagesize - 1))) | |
3304 | && first + last <= exp_data_seg.pagesize) | |
3305 | { | |
3306 | exp_data_seg.phase = exp_dataseg_adjust; | |
1b493742 | 3307 | lang_statement_iteration++; |
2d20f7bf | 3308 | result = lang_size_sections_1 (s, output_section_statement, prev, |
cf888e70 | 3309 | fill, dot, relax, check_regions); |
2d20f7bf JJ |
3310 | } |
3311 | } | |
3312 | ||
86d3c9a8 HPN |
3313 | /* Some backend relaxers want to refer to the output section size. Give |
3314 | them a section size that does not change on the next call while they | |
3315 | relax. We can't set this at top because lang_reset_memory_regions | |
3316 | which is called before we get here, sets _raw_size to 0 on relaxing | |
3317 | rounds. */ | |
3318 | for (o = output_bfd->sections; o != NULL; o = o->next) | |
3319 | o->_cooked_size = o->_raw_size; | |
3320 | ||
2d20f7bf JJ |
3321 | return result; |
3322 | } | |
3323 | ||
420e579c HPN |
3324 | /* Worker function for lang_do_assignments. Recursiveness goes here. */ |
3325 | ||
3326 | static bfd_vma | |
3327 | lang_do_assignments_1 | |
1579bae1 AM |
3328 | (lang_statement_union_type *s, |
3329 | lang_output_section_statement_type *output_section_statement, | |
3330 | fill_type *fill, | |
3331 | bfd_vma dot) | |
252b5132 | 3332 | { |
1579bae1 | 3333 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
3334 | { |
3335 | switch (s->header.type) | |
3336 | { | |
3337 | case lang_constructors_statement_enum: | |
420e579c HPN |
3338 | dot = lang_do_assignments_1 (constructor_list.head, |
3339 | output_section_statement, | |
3340 | fill, | |
3341 | dot); | |
252b5132 RH |
3342 | break; |
3343 | ||
3344 | case lang_output_section_statement_enum: | |
3345 | { | |
d1778b88 | 3346 | lang_output_section_statement_type *os; |
252b5132 | 3347 | |
d1778b88 | 3348 | os = &(s->output_section_statement); |
252b5132 RH |
3349 | if (os->bfd_section != NULL) |
3350 | { | |
3351 | dot = os->bfd_section->vma; | |
4a43e768 | 3352 | lang_do_assignments_1 (os->children.head, os, os->fill, dot); |
e5caa5e0 AM |
3353 | dot = (os->bfd_section->vma |
3354 | + TO_ADDR (os->bfd_section->_raw_size)); | |
4cbfc3ac | 3355 | |
252b5132 | 3356 | } |
c13b1b77 | 3357 | if (os->load_base) |
252b5132 RH |
3358 | { |
3359 | /* If nothing has been placed into the output section then | |
4de2d33d | 3360 | it won't have a bfd_section. */ |
5f992e62 | 3361 | if (os->bfd_section) |
252b5132 | 3362 | { |
5f992e62 | 3363 | os->bfd_section->lma |
08da4cac KH |
3364 | = exp_get_abs_int (os->load_base, 0, "load base", |
3365 | lang_final_phase_enum); | |
252b5132 RH |
3366 | } |
3367 | } | |
3368 | } | |
3369 | break; | |
3370 | case lang_wild_statement_enum: | |
3371 | ||
420e579c HPN |
3372 | dot = lang_do_assignments_1 (s->wild_statement.children.head, |
3373 | output_section_statement, | |
3374 | fill, dot); | |
252b5132 RH |
3375 | |
3376 | break; | |
3377 | ||
3378 | case lang_object_symbols_statement_enum: | |
3379 | case lang_output_statement_enum: | |
3380 | case lang_target_statement_enum: | |
3381 | #if 0 | |
3382 | case lang_common_statement_enum: | |
3383 | #endif | |
3384 | break; | |
3385 | case lang_data_statement_enum: | |
3386 | { | |
3387 | etree_value_type value; | |
3388 | ||
3389 | value = exp_fold_tree (s->data_statement.exp, | |
3390 | abs_output_section, | |
3391 | lang_final_phase_enum, dot, &dot); | |
7c519c12 | 3392 | if (!value.valid_p) |
252b5132 | 3393 | einfo (_("%F%P: invalid data statement\n")); |
384d938f NS |
3394 | s->data_statement.value |
3395 | = value.value + value.section->bfd_section->vma; | |
252b5132 | 3396 | } |
b7a26f91 KH |
3397 | { |
3398 | unsigned int size; | |
08da4cac KH |
3399 | switch (s->data_statement.type) |
3400 | { | |
3401 | default: | |
3402 | abort (); | |
3403 | case QUAD: | |
3404 | case SQUAD: | |
3405 | size = QUAD_SIZE; | |
3406 | break; | |
3407 | case LONG: | |
3408 | size = LONG_SIZE; | |
3409 | break; | |
3410 | case SHORT: | |
3411 | size = SHORT_SIZE; | |
3412 | break; | |
3413 | case BYTE: | |
3414 | size = BYTE_SIZE; | |
3415 | break; | |
3416 | } | |
e5caa5e0 AM |
3417 | if (size < TO_SIZE ((unsigned) 1)) |
3418 | size = TO_SIZE ((unsigned) 1); | |
3419 | dot += TO_ADDR (size); | |
08da4cac | 3420 | } |
252b5132 RH |
3421 | break; |
3422 | ||
3423 | case lang_reloc_statement_enum: | |
3424 | { | |
3425 | etree_value_type value; | |
3426 | ||
3427 | value = exp_fold_tree (s->reloc_statement.addend_exp, | |
3428 | abs_output_section, | |
3429 | lang_final_phase_enum, dot, &dot); | |
3430 | s->reloc_statement.addend_value = value.value; | |
7c519c12 | 3431 | if (!value.valid_p) |
252b5132 RH |
3432 | einfo (_("%F%P: invalid reloc statement\n")); |
3433 | } | |
e5caa5e0 | 3434 | dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto)); |
252b5132 RH |
3435 | break; |
3436 | ||
3437 | case lang_input_section_enum: | |
3438 | { | |
3439 | asection *in = s->input_section.section; | |
3440 | ||
3441 | if (in->_cooked_size != 0) | |
e5caa5e0 | 3442 | dot += TO_ADDR (in->_cooked_size); |
252b5132 | 3443 | else |
e5caa5e0 | 3444 | dot += TO_ADDR (in->_raw_size); |
252b5132 RH |
3445 | } |
3446 | break; | |
3447 | ||
3448 | case lang_input_statement_enum: | |
3449 | break; | |
3450 | case lang_fill_statement_enum: | |
3451 | fill = s->fill_statement.fill; | |
3452 | break; | |
3453 | case lang_assignment_statement_enum: | |
3454 | { | |
3455 | exp_fold_tree (s->assignment_statement.exp, | |
3456 | output_section_statement, | |
3457 | lang_final_phase_enum, | |
3458 | dot, | |
3459 | &dot); | |
3460 | } | |
3461 | ||
3462 | break; | |
3463 | case lang_padding_statement_enum: | |
e5caa5e0 | 3464 | dot += TO_ADDR (s->padding_statement.size); |
252b5132 RH |
3465 | break; |
3466 | ||
3467 | case lang_group_statement_enum: | |
420e579c HPN |
3468 | dot = lang_do_assignments_1 (s->group_statement.children.head, |
3469 | output_section_statement, | |
3470 | fill, dot); | |
252b5132 RH |
3471 | |
3472 | break; | |
3473 | ||
3474 | default: | |
3475 | FAIL (); | |
3476 | break; | |
3477 | case lang_address_statement_enum: | |
3478 | break; | |
3479 | } | |
3480 | ||
3481 | } | |
3482 | return dot; | |
3483 | } | |
3484 | ||
f2241121 | 3485 | void |
420e579c | 3486 | lang_do_assignments (lang_statement_union_type *s, |
e5caa5e0 | 3487 | lang_output_section_statement_type *output_section_statement, |
420e579c HPN |
3488 | fill_type *fill, |
3489 | bfd_vma dot) | |
3490 | { | |
3491 | /* Callers of exp_fold_tree need to increment this. */ | |
3492 | lang_statement_iteration++; | |
3493 | lang_do_assignments_1 (s, output_section_statement, fill, dot); | |
3494 | } | |
3495 | ||
252b5132 RH |
3496 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the |
3497 | operator .startof. (section_name), it produces an undefined symbol | |
3498 | .startof.section_name. Similarly, when it sees | |
3499 | .sizeof. (section_name), it produces an undefined symbol | |
3500 | .sizeof.section_name. For all the output sections, we look for | |
3501 | such symbols, and set them to the correct value. */ | |
3502 | ||
3503 | static void | |
1579bae1 | 3504 | lang_set_startof (void) |
252b5132 RH |
3505 | { |
3506 | asection *s; | |
3507 | ||
1049f94e | 3508 | if (link_info.relocatable) |
252b5132 RH |
3509 | return; |
3510 | ||
3511 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3512 | { | |
3513 | const char *secname; | |
3514 | char *buf; | |
3515 | struct bfd_link_hash_entry *h; | |
3516 | ||
3517 | secname = bfd_get_section_name (output_bfd, s); | |
3518 | buf = xmalloc (10 + strlen (secname)); | |
3519 | ||
3520 | sprintf (buf, ".startof.%s", secname); | |
b34976b6 | 3521 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
3522 | if (h != NULL && h->type == bfd_link_hash_undefined) |
3523 | { | |
3524 | h->type = bfd_link_hash_defined; | |
3525 | h->u.def.value = bfd_get_section_vma (output_bfd, s); | |
3526 | h->u.def.section = bfd_abs_section_ptr; | |
3527 | } | |
3528 | ||
3529 | sprintf (buf, ".sizeof.%s", secname); | |
b34976b6 | 3530 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
3531 | if (h != NULL && h->type == bfd_link_hash_undefined) |
3532 | { | |
3533 | h->type = bfd_link_hash_defined; | |
3534 | if (s->_cooked_size != 0) | |
e5caa5e0 | 3535 | h->u.def.value = TO_ADDR (s->_cooked_size); |
252b5132 | 3536 | else |
e5caa5e0 | 3537 | h->u.def.value = TO_ADDR (s->_raw_size); |
252b5132 RH |
3538 | h->u.def.section = bfd_abs_section_ptr; |
3539 | } | |
3540 | ||
3541 | free (buf); | |
3542 | } | |
3543 | } | |
3544 | ||
3545 | static void | |
1579bae1 | 3546 | lang_finish (void) |
252b5132 RH |
3547 | { |
3548 | struct bfd_link_hash_entry *h; | |
b34976b6 | 3549 | bfd_boolean warn; |
252b5132 | 3550 | |
1049f94e | 3551 | if (link_info.relocatable || link_info.shared) |
b34976b6 | 3552 | warn = FALSE; |
252b5132 | 3553 | else |
b34976b6 | 3554 | warn = TRUE; |
252b5132 | 3555 | |
1579bae1 | 3556 | if (entry_symbol.name == NULL) |
252b5132 RH |
3557 | { |
3558 | /* No entry has been specified. Look for start, but don't warn | |
3559 | if we don't find it. */ | |
e3e942e9 | 3560 | entry_symbol.name = "start"; |
b34976b6 | 3561 | warn = FALSE; |
252b5132 RH |
3562 | } |
3563 | ||
e3e942e9 | 3564 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, |
b34976b6 | 3565 | FALSE, FALSE, TRUE); |
1579bae1 | 3566 | if (h != NULL |
252b5132 RH |
3567 | && (h->type == bfd_link_hash_defined |
3568 | || h->type == bfd_link_hash_defweak) | |
3569 | && h->u.def.section->output_section != NULL) | |
3570 | { | |
3571 | bfd_vma val; | |
3572 | ||
3573 | val = (h->u.def.value | |
3574 | + bfd_get_section_vma (output_bfd, | |
3575 | h->u.def.section->output_section) | |
3576 | + h->u.def.section->output_offset); | |
3577 | if (! bfd_set_start_address (output_bfd, val)) | |
e3e942e9 | 3578 | einfo (_("%P%F:%s: can't set start address\n"), entry_symbol.name); |
252b5132 RH |
3579 | } |
3580 | else | |
3581 | { | |
3582 | bfd_vma val; | |
5f992e62 | 3583 | const char *send; |
252b5132 RH |
3584 | |
3585 | /* We couldn't find the entry symbol. Try parsing it as a | |
3586 | number. */ | |
e3e942e9 | 3587 | val = bfd_scan_vma (entry_symbol.name, &send, 0); |
252b5132 RH |
3588 | if (*send == '\0') |
3589 | { | |
3590 | if (! bfd_set_start_address (output_bfd, val)) | |
3591 | einfo (_("%P%F: can't set start address\n")); | |
3592 | } | |
3593 | else | |
3594 | { | |
3595 | asection *ts; | |
3596 | ||
3597 | /* Can't find the entry symbol, and it's not a number. Use | |
3598 | the first address in the text section. */ | |
1e281515 | 3599 | ts = bfd_get_section_by_name (output_bfd, entry_section); |
1579bae1 | 3600 | if (ts != NULL) |
252b5132 RH |
3601 | { |
3602 | if (warn) | |
3603 | einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"), | |
e3e942e9 AM |
3604 | entry_symbol.name, |
3605 | bfd_get_section_vma (output_bfd, ts)); | |
252b5132 RH |
3606 | if (! bfd_set_start_address (output_bfd, |
3607 | bfd_get_section_vma (output_bfd, | |
3608 | ts))) | |
3609 | einfo (_("%P%F: can't set start address\n")); | |
3610 | } | |
3611 | else | |
3612 | { | |
3613 | if (warn) | |
3614 | einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"), | |
e3e942e9 | 3615 | entry_symbol.name); |
252b5132 RH |
3616 | } |
3617 | } | |
3618 | } | |
420e579c HPN |
3619 | |
3620 | bfd_hash_table_free (&lang_definedness_table); | |
252b5132 RH |
3621 | } |
3622 | ||
3623 | /* This is a small function used when we want to ignore errors from | |
3624 | BFD. */ | |
3625 | ||
3626 | static void | |
87f2a346 | 3627 | ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...) |
252b5132 RH |
3628 | { |
3629 | /* Don't do anything. */ | |
3630 | } | |
3631 | ||
3632 | /* Check that the architecture of all the input files is compatible | |
3633 | with the output file. Also call the backend to let it do any | |
3634 | other checking that is needed. */ | |
3635 | ||
3636 | static void | |
1579bae1 | 3637 | lang_check (void) |
252b5132 RH |
3638 | { |
3639 | lang_statement_union_type *file; | |
3640 | bfd *input_bfd; | |
5f992e62 | 3641 | const bfd_arch_info_type *compatible; |
252b5132 | 3642 | |
1579bae1 | 3643 | for (file = file_chain.head; file != NULL; file = file->input_statement.next) |
252b5132 RH |
3644 | { |
3645 | input_bfd = file->input_statement.the_bfd; | |
312b768e NC |
3646 | compatible = bfd_arch_get_compatible (input_bfd, output_bfd, |
3647 | command_line.accept_unknown_input_arch); | |
30cba025 AM |
3648 | |
3649 | /* In general it is not possible to perform a relocatable | |
3650 | link between differing object formats when the input | |
3651 | file has relocations, because the relocations in the | |
3652 | input format may not have equivalent representations in | |
3653 | the output format (and besides BFD does not translate | |
3654 | relocs for other link purposes than a final link). */ | |
1049f94e | 3655 | if ((link_info.relocatable || link_info.emitrelocations) |
30cba025 | 3656 | && (compatible == NULL |
d35a52e2 | 3657 | || bfd_get_flavour (input_bfd) != bfd_get_flavour (output_bfd)) |
30cba025 AM |
3658 | && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0) |
3659 | { | |
3660 | einfo (_("%P%F: Relocatable linking with relocations from format %s (%B) to format %s (%B) is not supported\n"), | |
3661 | bfd_get_target (input_bfd), input_bfd, | |
3662 | bfd_get_target (output_bfd), output_bfd); | |
3663 | /* einfo with %F exits. */ | |
3664 | } | |
3665 | ||
252b5132 RH |
3666 | if (compatible == NULL) |
3667 | { | |
3668 | if (command_line.warn_mismatch) | |
3669 | einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"), | |
3670 | bfd_printable_name (input_bfd), input_bfd, | |
3671 | bfd_printable_name (output_bfd)); | |
3672 | } | |
b9247304 | 3673 | else if (bfd_count_sections (input_bfd)) |
252b5132 | 3674 | { |
b9247304 | 3675 | /* If the input bfd has no contents, it shouldn't set the |
b7a26f91 | 3676 | private data of the output bfd. */ |
b9247304 | 3677 | |
252b5132 RH |
3678 | bfd_error_handler_type pfn = NULL; |
3679 | ||
3680 | /* If we aren't supposed to warn about mismatched input | |
3681 | files, temporarily set the BFD error handler to a | |
3682 | function which will do nothing. We still want to call | |
3683 | bfd_merge_private_bfd_data, since it may set up | |
3684 | information which is needed in the output file. */ | |
3685 | if (! command_line.warn_mismatch) | |
3686 | pfn = bfd_set_error_handler (ignore_bfd_errors); | |
3687 | if (! bfd_merge_private_bfd_data (input_bfd, output_bfd)) | |
3688 | { | |
3689 | if (command_line.warn_mismatch) | |
177b729b | 3690 | einfo (_("%P%X: failed to merge target specific data of file %B\n"), |
252b5132 RH |
3691 | input_bfd); |
3692 | } | |
3693 | if (! command_line.warn_mismatch) | |
3694 | bfd_set_error_handler (pfn); | |
3695 | } | |
3696 | } | |
3697 | } | |
3698 | ||
3699 | /* Look through all the global common symbols and attach them to the | |
3700 | correct section. The -sort-common command line switch may be used | |
3701 | to roughly sort the entries by size. */ | |
3702 | ||
3703 | static void | |
1579bae1 | 3704 | lang_common (void) |
252b5132 | 3705 | { |
4818e05f AM |
3706 | if (command_line.inhibit_common_definition) |
3707 | return; | |
1049f94e | 3708 | if (link_info.relocatable |
252b5132 RH |
3709 | && ! command_line.force_common_definition) |
3710 | return; | |
3711 | ||
3712 | if (! config.sort_common) | |
1579bae1 | 3713 | bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL); |
252b5132 RH |
3714 | else |
3715 | { | |
3716 | int power; | |
3717 | ||
3718 | for (power = 4; power >= 0; power--) | |
1579bae1 | 3719 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); |
252b5132 RH |
3720 | } |
3721 | } | |
3722 | ||
3723 | /* Place one common symbol in the correct section. */ | |
3724 | ||
b34976b6 | 3725 | static bfd_boolean |
1579bae1 | 3726 | lang_one_common (struct bfd_link_hash_entry *h, void *info) |
252b5132 RH |
3727 | { |
3728 | unsigned int power_of_two; | |
3729 | bfd_vma size; | |
3730 | asection *section; | |
3731 | ||
3732 | if (h->type != bfd_link_hash_common) | |
b34976b6 | 3733 | return TRUE; |
252b5132 RH |
3734 | |
3735 | size = h->u.c.size; | |
3736 | power_of_two = h->u.c.p->alignment_power; | |
3737 | ||
3738 | if (config.sort_common | |
3739 | && power_of_two < (unsigned int) *(int *) info) | |
b34976b6 | 3740 | return TRUE; |
252b5132 RH |
3741 | |
3742 | section = h->u.c.p->section; | |
3743 | ||
e5caa5e0 AM |
3744 | /* Increase the size of the section to align the common sym. */ |
3745 | section->_cooked_size += ((bfd_vma) 1 << (power_of_two + opb_shift)) - 1; | |
3746 | section->_cooked_size &= (- (bfd_vma) 1 << (power_of_two + opb_shift)); | |
252b5132 RH |
3747 | |
3748 | /* Adjust the alignment if necessary. */ | |
3749 | if (power_of_two > section->alignment_power) | |
3750 | section->alignment_power = power_of_two; | |
3751 | ||
3752 | /* Change the symbol from common to defined. */ | |
3753 | h->type = bfd_link_hash_defined; | |
3754 | h->u.def.section = section; | |
3755 | h->u.def.value = section->_cooked_size; | |
3756 | ||
3757 | /* Increase the size of the section. */ | |
3758 | section->_cooked_size += size; | |
3759 | ||
3760 | /* Make sure the section is allocated in memory, and make sure that | |
3761 | it is no longer a common section. */ | |
3762 | section->flags |= SEC_ALLOC; | |
08da4cac | 3763 | section->flags &= ~SEC_IS_COMMON; |
252b5132 RH |
3764 | |
3765 | if (config.map_file != NULL) | |
3766 | { | |
b34976b6 | 3767 | static bfd_boolean header_printed; |
252b5132 RH |
3768 | int len; |
3769 | char *name; | |
3770 | char buf[50]; | |
3771 | ||
3772 | if (! header_printed) | |
3773 | { | |
3774 | minfo (_("\nAllocating common symbols\n")); | |
3775 | minfo (_("Common symbol size file\n\n")); | |
b34976b6 | 3776 | header_printed = TRUE; |
252b5132 RH |
3777 | } |
3778 | ||
3779 | name = demangle (h->root.string); | |
3780 | minfo ("%s", name); | |
3781 | len = strlen (name); | |
3782 | free (name); | |
3783 | ||
3784 | if (len >= 19) | |
3785 | { | |
3786 | print_nl (); | |
3787 | len = 0; | |
3788 | } | |
3789 | while (len < 20) | |
3790 | { | |
3791 | print_space (); | |
3792 | ++len; | |
3793 | } | |
3794 | ||
3795 | minfo ("0x"); | |
3796 | if (size <= 0xffffffff) | |
3797 | sprintf (buf, "%lx", (unsigned long) size); | |
3798 | else | |
3799 | sprintf_vma (buf, size); | |
3800 | minfo ("%s", buf); | |
3801 | len = strlen (buf); | |
3802 | ||
3803 | while (len < 16) | |
3804 | { | |
3805 | print_space (); | |
3806 | ++len; | |
3807 | } | |
3808 | ||
3809 | minfo ("%B\n", section->owner); | |
3810 | } | |
3811 | ||
b34976b6 | 3812 | return TRUE; |
252b5132 RH |
3813 | } |
3814 | ||
08da4cac KH |
3815 | /* Run through the input files and ensure that every input section has |
3816 | somewhere to go. If one is found without a destination then create | |
3817 | an input request and place it into the statement tree. */ | |
252b5132 RH |
3818 | |
3819 | static void | |
1579bae1 | 3820 | lang_place_orphans (void) |
252b5132 | 3821 | { |
e50d8076 | 3822 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
3823 | { |
3824 | asection *s; | |
3825 | ||
1579bae1 | 3826 | for (s = file->the_bfd->sections; s != NULL; s = s->next) |
252b5132 | 3827 | { |
1579bae1 | 3828 | if (s->output_section == NULL) |
252b5132 | 3829 | { |
396a2467 | 3830 | /* This section of the file is not attached, root |
08da4cac | 3831 | around for a sensible place for it to go. */ |
252b5132 RH |
3832 | |
3833 | if (file->just_syms_flag) | |
3834 | { | |
c2c01aa7 | 3835 | abort (); |
252b5132 RH |
3836 | } |
3837 | else if (strcmp (s->name, "COMMON") == 0) | |
3838 | { | |
3839 | /* This is a lonely common section which must have | |
3840 | come from an archive. We attach to the section | |
3841 | with the wildcard. */ | |
1049f94e | 3842 | if (! link_info.relocatable |
252b5132 RH |
3843 | || command_line.force_common_definition) |
3844 | { | |
3845 | if (default_common_section == NULL) | |
3846 | { | |
3847 | #if 0 | |
3848 | /* This message happens when using the | |
3849 | svr3.ifile linker script, so I have | |
3850 | disabled it. */ | |
3851 | info_msg (_("%P: no [COMMON] command, defaulting to .bss\n")); | |
3852 | #endif | |
3853 | default_common_section = | |
3854 | lang_output_section_statement_lookup (".bss"); | |
3855 | ||
3856 | } | |
39dcfe18 AM |
3857 | lang_add_section (&default_common_section->children, s, |
3858 | default_common_section, file); | |
252b5132 RH |
3859 | } |
3860 | } | |
3861 | else if (ldemul_place_orphan (file, s)) | |
3862 | ; | |
3863 | else | |
3864 | { | |
39dcfe18 | 3865 | lang_output_section_statement_type *os; |
252b5132 | 3866 | |
39dcfe18 AM |
3867 | os = lang_output_section_statement_lookup (s->name); |
3868 | lang_add_section (&os->children, s, os, file); | |
252b5132 RH |
3869 | } |
3870 | } | |
3871 | } | |
3872 | } | |
3873 | } | |
3874 | ||
252b5132 | 3875 | void |
1579bae1 | 3876 | lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert) |
252b5132 | 3877 | { |
aa8804e4 | 3878 | flagword *ptr_flags; |
252b5132 | 3879 | |
aa8804e4 | 3880 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
252b5132 RH |
3881 | while (*flags) |
3882 | { | |
3883 | switch (*flags) | |
3884 | { | |
252b5132 RH |
3885 | case 'A': case 'a': |
3886 | *ptr_flags |= SEC_ALLOC; | |
3887 | break; | |
3888 | ||
3889 | case 'R': case 'r': | |
3890 | *ptr_flags |= SEC_READONLY; | |
3891 | break; | |
3892 | ||
3893 | case 'W': case 'w': | |
3894 | *ptr_flags |= SEC_DATA; | |
3895 | break; | |
3896 | ||
3897 | case 'X': case 'x': | |
3898 | *ptr_flags |= SEC_CODE; | |
3899 | break; | |
3900 | ||
3901 | case 'L': case 'l': | |
3902 | case 'I': case 'i': | |
3903 | *ptr_flags |= SEC_LOAD; | |
3904 | break; | |
3905 | ||
3906 | default: | |
3907 | einfo (_("%P%F: invalid syntax in flags\n")); | |
3908 | break; | |
3909 | } | |
3910 | flags++; | |
3911 | } | |
3912 | } | |
3913 | ||
3914 | /* Call a function on each input file. This function will be called | |
3915 | on an archive, but not on the elements. */ | |
3916 | ||
3917 | void | |
1579bae1 | 3918 | lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
252b5132 RH |
3919 | { |
3920 | lang_input_statement_type *f; | |
3921 | ||
3922 | for (f = (lang_input_statement_type *) input_file_chain.head; | |
3923 | f != NULL; | |
3924 | f = (lang_input_statement_type *) f->next_real_file) | |
3925 | func (f); | |
3926 | } | |
3927 | ||
3928 | /* Call a function on each file. The function will be called on all | |
3929 | the elements of an archive which are included in the link, but will | |
3930 | not be called on the archive file itself. */ | |
3931 | ||
3932 | void | |
1579bae1 | 3933 | lang_for_each_file (void (*func) (lang_input_statement_type *)) |
252b5132 | 3934 | { |
e50d8076 | 3935 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 RH |
3936 | { |
3937 | func (f); | |
3938 | } | |
3939 | } | |
3940 | ||
252b5132 | 3941 | void |
1579bae1 | 3942 | ldlang_add_file (lang_input_statement_type *entry) |
252b5132 RH |
3943 | { |
3944 | bfd **pp; | |
3945 | ||
3946 | lang_statement_append (&file_chain, | |
3947 | (lang_statement_union_type *) entry, | |
3948 | &entry->next); | |
3949 | ||
3950 | /* The BFD linker needs to have a list of all input BFDs involved in | |
3951 | a link. */ | |
1579bae1 | 3952 | ASSERT (entry->the_bfd->link_next == NULL); |
252b5132 | 3953 | ASSERT (entry->the_bfd != output_bfd); |
1579bae1 | 3954 | for (pp = &link_info.input_bfds; *pp != NULL; pp = &(*pp)->link_next) |
252b5132 RH |
3955 | ; |
3956 | *pp = entry->the_bfd; | |
1579bae1 | 3957 | entry->the_bfd->usrdata = entry; |
252b5132 RH |
3958 | bfd_set_gp_size (entry->the_bfd, g_switch_value); |
3959 | ||
3960 | /* Look through the sections and check for any which should not be | |
3961 | included in the link. We need to do this now, so that we can | |
3962 | notice when the backend linker tries to report multiple | |
3963 | definition errors for symbols which are in sections we aren't | |
3964 | going to link. FIXME: It might be better to entirely ignore | |
3965 | symbols which are defined in sections which are going to be | |
3966 | discarded. This would require modifying the backend linker for | |
3967 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
3968 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
3969 | ||
1579bae1 | 3970 | bfd_map_over_sections (entry->the_bfd, section_already_linked, entry); |
252b5132 RH |
3971 | } |
3972 | ||
3973 | void | |
1579bae1 | 3974 | lang_add_output (const char *name, int from_script) |
252b5132 RH |
3975 | { |
3976 | /* Make -o on command line override OUTPUT in script. */ | |
7c519c12 | 3977 | if (!had_output_filename || !from_script) |
252b5132 RH |
3978 | { |
3979 | output_filename = name; | |
b34976b6 | 3980 | had_output_filename = TRUE; |
252b5132 RH |
3981 | } |
3982 | } | |
3983 | ||
252b5132 RH |
3984 | static lang_output_section_statement_type *current_section; |
3985 | ||
3986 | static int | |
1579bae1 | 3987 | topower (int x) |
252b5132 RH |
3988 | { |
3989 | unsigned int i = 1; | |
3990 | int l; | |
3991 | ||
3992 | if (x < 0) | |
3993 | return -1; | |
3994 | ||
5f992e62 | 3995 | for (l = 0; l < 32; l++) |
252b5132 RH |
3996 | { |
3997 | if (i >= (unsigned int) x) | |
3998 | return l; | |
3999 | i <<= 1; | |
4000 | } | |
4001 | ||
4002 | return 0; | |
4003 | } | |
4004 | ||
aea4bd9d | 4005 | lang_output_section_statement_type * |
1579bae1 AM |
4006 | lang_enter_output_section_statement (const char *output_section_statement_name, |
4007 | etree_type *address_exp, | |
4008 | enum section_type sectype, | |
1579bae1 AM |
4009 | etree_type *align, |
4010 | etree_type *subalign, | |
4011 | etree_type *ebase) | |
252b5132 RH |
4012 | { |
4013 | lang_output_section_statement_type *os; | |
4014 | ||
4015 | current_section = | |
4016 | os = | |
4017 | lang_output_section_statement_lookup (output_section_statement_name); | |
4018 | ||
08da4cac KH |
4019 | /* Add this statement to tree. */ |
4020 | #if 0 | |
4021 | add_statement (lang_output_section_statement_enum, | |
4022 | output_section_statement); | |
4023 | #endif | |
4024 | /* Make next things chain into subchain of this. */ | |
252b5132 | 4025 | |
1579bae1 | 4026 | if (os->addr_tree == NULL) |
08da4cac KH |
4027 | { |
4028 | os->addr_tree = address_exp; | |
4029 | } | |
252b5132 RH |
4030 | os->sectype = sectype; |
4031 | if (sectype != noload_section) | |
4032 | os->flags = SEC_NO_FLAGS; | |
4033 | else | |
4034 | os->flags = SEC_NEVER_LOAD; | |
e5caa5e0 | 4035 | os->block_value = 1; |
252b5132 RH |
4036 | stat_ptr = &os->children; |
4037 | ||
08da4cac KH |
4038 | os->subsection_alignment = |
4039 | topower (exp_get_value_int (subalign, -1, "subsection alignment", 0)); | |
4040 | os->section_alignment = | |
4041 | topower (exp_get_value_int (align, -1, "section alignment", 0)); | |
252b5132 RH |
4042 | |
4043 | os->load_base = ebase; | |
aea4bd9d | 4044 | return os; |
252b5132 RH |
4045 | } |
4046 | ||
252b5132 | 4047 | void |
1579bae1 | 4048 | lang_final (void) |
252b5132 RH |
4049 | { |
4050 | lang_output_statement_type *new = | |
4051 | new_stat (lang_output_statement, stat_ptr); | |
4052 | ||
4053 | new->name = output_filename; | |
4054 | } | |
4055 | ||
08da4cac KH |
4056 | /* Reset the current counters in the regions. */ |
4057 | ||
e3dc8847 | 4058 | void |
1579bae1 | 4059 | lang_reset_memory_regions (void) |
252b5132 RH |
4060 | { |
4061 | lang_memory_region_type *p = lang_memory_region_list; | |
b3327aad | 4062 | asection *o; |
252b5132 | 4063 | |
1579bae1 | 4064 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
4065 | { |
4066 | p->old_length = (bfd_size_type) (p->current - p->origin); | |
4067 | p->current = p->origin; | |
4068 | } | |
b3327aad AM |
4069 | |
4070 | for (o = output_bfd->sections; o != NULL; o = o->next) | |
4071 | o->_raw_size = 0; | |
252b5132 RH |
4072 | } |
4073 | ||
b6bf44ba AM |
4074 | /* If the wild pattern was marked KEEP, the member sections |
4075 | should be as well. */ | |
252b5132 RH |
4076 | |
4077 | static void | |
1579bae1 AM |
4078 | gc_section_callback (lang_wild_statement_type *ptr, |
4079 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
4080 | asection *section, | |
4081 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
4082 | void *data ATTRIBUTE_UNUSED) | |
252b5132 | 4083 | { |
4dec4d4e RH |
4084 | if (ptr->keep_sections) |
4085 | section->flags |= SEC_KEEP; | |
252b5132 RH |
4086 | } |
4087 | ||
b6bf44ba | 4088 | /* Handle a wild statement, marking it against GC. */ |
252b5132 RH |
4089 | |
4090 | static void | |
1579bae1 | 4091 | lang_gc_wild (lang_wild_statement_type *s) |
252b5132 | 4092 | { |
b6bf44ba | 4093 | walk_wild (s, gc_section_callback, NULL); |
252b5132 RH |
4094 | } |
4095 | ||
4096 | /* Iterate over sections marking them against GC. */ | |
4097 | ||
4098 | static void | |
1579bae1 | 4099 | lang_gc_sections_1 (lang_statement_union_type *s) |
252b5132 | 4100 | { |
1579bae1 | 4101 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
4102 | { |
4103 | switch (s->header.type) | |
4104 | { | |
4105 | case lang_wild_statement_enum: | |
b6bf44ba | 4106 | lang_gc_wild (&s->wild_statement); |
abc6ab0a | 4107 | break; |
252b5132 RH |
4108 | case lang_constructors_statement_enum: |
4109 | lang_gc_sections_1 (constructor_list.head); | |
4110 | break; | |
4111 | case lang_output_section_statement_enum: | |
4112 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
4113 | break; | |
4114 | case lang_group_statement_enum: | |
4115 | lang_gc_sections_1 (s->group_statement.children.head); | |
4116 | break; | |
4117 | default: | |
4118 | break; | |
4119 | } | |
4120 | } | |
4121 | } | |
4122 | ||
4123 | static void | |
1579bae1 | 4124 | lang_gc_sections (void) |
252b5132 RH |
4125 | { |
4126 | struct bfd_link_hash_entry *h; | |
e3e942e9 | 4127 | ldlang_undef_chain_list_type *ulist; |
252b5132 RH |
4128 | |
4129 | /* Keep all sections so marked in the link script. */ | |
4130 | ||
4131 | lang_gc_sections_1 (statement_list.head); | |
4132 | ||
e3e942e9 AM |
4133 | /* Keep all sections containing symbols undefined on the command-line, |
4134 | and the section containing the entry symbol. */ | |
252b5132 | 4135 | |
e3e942e9 | 4136 | for (ulist = link_info.gc_sym_list; ulist; ulist = ulist->next) |
252b5132 | 4137 | { |
5f992e62 | 4138 | h = bfd_link_hash_lookup (link_info.hash, ulist->name, |
b34976b6 | 4139 | FALSE, FALSE, FALSE); |
252b5132 | 4140 | |
1579bae1 | 4141 | if (h != NULL |
08da4cac KH |
4142 | && (h->type == bfd_link_hash_defined |
4143 | || h->type == bfd_link_hash_defweak) | |
252b5132 RH |
4144 | && ! bfd_is_abs_section (h->u.def.section)) |
4145 | { | |
4146 | h->u.def.section->flags |= SEC_KEEP; | |
4147 | } | |
4148 | } | |
4149 | ||
4150 | bfd_gc_sections (output_bfd, &link_info); | |
4151 | } | |
4152 | ||
4153 | void | |
1579bae1 | 4154 | lang_process (void) |
252b5132 RH |
4155 | { |
4156 | lang_reasonable_defaults (); | |
4157 | current_target = default_target; | |
4158 | ||
08da4cac KH |
4159 | /* Open the output file. */ |
4160 | lang_for_each_statement (ldlang_open_output); | |
e5caa5e0 | 4161 | init_opb (); |
252b5132 RH |
4162 | |
4163 | ldemul_create_output_section_statements (); | |
4164 | ||
08da4cac | 4165 | /* Add to the hash table all undefineds on the command line. */ |
252b5132 RH |
4166 | lang_place_undefineds (); |
4167 | ||
9503fd87 ILT |
4168 | already_linked_table_init (); |
4169 | ||
08da4cac | 4170 | /* Create a bfd for each input file. */ |
252b5132 | 4171 | current_target = default_target; |
b34976b6 | 4172 | open_input_bfds (statement_list.head, FALSE); |
252b5132 | 4173 | |
e3e942e9 AM |
4174 | link_info.gc_sym_list = &entry_symbol; |
4175 | if (entry_symbol.name == NULL) | |
4176 | link_info.gc_sym_list = ldlang_undef_chain_list_head; | |
4177 | ||
252b5132 RH |
4178 | ldemul_after_open (); |
4179 | ||
9503fd87 ILT |
4180 | already_linked_table_free (); |
4181 | ||
252b5132 RH |
4182 | /* Make sure that we're not mixing architectures. We call this |
4183 | after all the input files have been opened, but before we do any | |
4184 | other processing, so that any operations merge_private_bfd_data | |
4185 | does on the output file will be known during the rest of the | |
4186 | link. */ | |
4187 | lang_check (); | |
4188 | ||
4189 | /* Handle .exports instead of a version script if we're told to do so. */ | |
4190 | if (command_line.version_exports_section) | |
4191 | lang_do_version_exports_section (); | |
4192 | ||
4193 | /* Build all sets based on the information gathered from the input | |
4194 | files. */ | |
4195 | ldctor_build_sets (); | |
4196 | ||
4197 | /* Remove unreferenced sections if asked to. */ | |
4198 | if (command_line.gc_sections) | |
4199 | lang_gc_sections (); | |
4200 | ||
8550eb6e JJ |
4201 | /* If there were any SEC_MERGE sections, finish their merging, so that |
4202 | section sizes can be computed. This has to be done after GC of sections, | |
4203 | so that GCed sections are not merged, but before assigning output | |
4204 | sections, since removing whole input sections is hard then. */ | |
4205 | bfd_merge_sections (output_bfd, &link_info); | |
4206 | ||
08da4cac | 4207 | /* Size up the common data. */ |
252b5132 RH |
4208 | lang_common (); |
4209 | ||
4210 | /* Run through the contours of the script and attach input sections | |
08da4cac | 4211 | to the correct output sections. */ |
1579bae1 | 4212 | map_input_to_output_sections (statement_list.head, NULL, NULL); |
252b5132 | 4213 | |
08da4cac | 4214 | /* Find any sections not attached explicitly and handle them. */ |
252b5132 RH |
4215 | lang_place_orphans (); |
4216 | ||
1049f94e | 4217 | if (! link_info.relocatable) |
862120bd AM |
4218 | { |
4219 | /* Look for a text section and set the readonly attribute in it. */ | |
4220 | asection *found = bfd_get_section_by_name (output_bfd, ".text"); | |
4221 | ||
1579bae1 | 4222 | if (found != NULL) |
862120bd AM |
4223 | { |
4224 | if (config.text_read_only) | |
4225 | found->flags |= SEC_READONLY; | |
4226 | else | |
4227 | found->flags &= ~SEC_READONLY; | |
4228 | } | |
4229 | } | |
4230 | ||
4231 | /* Do anything special before sizing sections. This is where ELF | |
4232 | and other back-ends size dynamic sections. */ | |
252b5132 RH |
4233 | ldemul_before_allocation (); |
4234 | ||
1049f94e | 4235 | if (!link_info.relocatable) |
4bd5a393 AM |
4236 | strip_excluded_output_sections (); |
4237 | ||
252b5132 RH |
4238 | /* We must record the program headers before we try to fix the |
4239 | section positions, since they will affect SIZEOF_HEADERS. */ | |
4240 | lang_record_phdrs (); | |
4241 | ||
b3327aad | 4242 | /* Size up the sections. */ |
1579bae1 AM |
4243 | lang_size_sections (statement_list.head, abs_output_section, |
4244 | &statement_list.head, 0, 0, NULL, | |
cf888e70 | 4245 | command_line.relax ? FALSE : TRUE); |
b3327aad | 4246 | |
08da4cac | 4247 | /* Now run around and relax if we can. */ |
252b5132 RH |
4248 | if (command_line.relax) |
4249 | { | |
252b5132 | 4250 | /* Keep relaxing until bfd_relax_section gives up. */ |
b34976b6 | 4251 | bfd_boolean relax_again; |
b3327aad | 4252 | |
252b5132 RH |
4253 | do |
4254 | { | |
b34976b6 | 4255 | relax_again = FALSE; |
252b5132 RH |
4256 | |
4257 | /* Note: pe-dll.c does something like this also. If you find | |
4258 | you need to change this code, you probably need to change | |
08da4cac | 4259 | pe-dll.c also. DJ */ |
252b5132 RH |
4260 | |
4261 | /* Do all the assignments with our current guesses as to | |
4262 | section sizes. */ | |
1579bae1 AM |
4263 | lang_do_assignments (statement_list.head, abs_output_section, |
4264 | NULL, 0); | |
252b5132 | 4265 | |
5a46fe39 JW |
4266 | /* We must do this after lang_do_assignments, because it uses |
4267 | _raw_size. */ | |
4268 | lang_reset_memory_regions (); | |
4269 | ||
252b5132 | 4270 | /* Perform another relax pass - this time we know where the |
0d6d936f | 4271 | globals are, so can make a better guess. */ |
1579bae1 AM |
4272 | lang_size_sections (statement_list.head, abs_output_section, |
4273 | &statement_list.head, 0, 0, &relax_again, FALSE); | |
c7996ad6 L |
4274 | |
4275 | /* If the normal relax is done and the relax finalize pass | |
4276 | is not performed yet, we perform another relax pass. */ | |
d9c458fc | 4277 | if (!relax_again && link_info.need_relax_finalize) |
c7996ad6 | 4278 | { |
d9c458fc | 4279 | link_info.need_relax_finalize = FALSE; |
c7996ad6 L |
4280 | relax_again = TRUE; |
4281 | } | |
252b5132 RH |
4282 | } |
4283 | while (relax_again); | |
cf888e70 NC |
4284 | |
4285 | /* Final extra sizing to report errors. */ | |
1579bae1 | 4286 | lang_do_assignments (statement_list.head, abs_output_section, NULL, 0); |
5a46fe39 | 4287 | lang_reset_memory_regions (); |
1579bae1 AM |
4288 | lang_size_sections (statement_list.head, abs_output_section, |
4289 | &statement_list.head, 0, 0, NULL, TRUE); | |
252b5132 | 4290 | } |
252b5132 RH |
4291 | |
4292 | /* See if anything special should be done now we know how big | |
4293 | everything is. */ | |
4294 | ldemul_after_allocation (); | |
4295 | ||
4296 | /* Fix any .startof. or .sizeof. symbols. */ | |
4297 | lang_set_startof (); | |
4298 | ||
08da4cac KH |
4299 | /* Do all the assignments, now that we know the final resting places |
4300 | of all the symbols. */ | |
252b5132 | 4301 | |
1579bae1 | 4302 | lang_do_assignments (statement_list.head, abs_output_section, NULL, 0); |
252b5132 RH |
4303 | |
4304 | /* Make sure that the section addresses make sense. */ | |
1049f94e | 4305 | if (! link_info.relocatable |
252b5132 RH |
4306 | && command_line.check_section_addresses) |
4307 | lang_check_section_addresses (); | |
5f992e62 | 4308 | |
08da4cac | 4309 | /* Final stuffs. */ |
252b5132 RH |
4310 | |
4311 | ldemul_finish (); | |
4312 | lang_finish (); | |
4313 | } | |
4314 | ||
4315 | /* EXPORTED TO YACC */ | |
4316 | ||
4317 | void | |
1579bae1 AM |
4318 | lang_add_wild (struct wildcard_spec *filespec, |
4319 | struct wildcard_list *section_list, | |
4320 | bfd_boolean keep_sections) | |
252b5132 | 4321 | { |
b6bf44ba AM |
4322 | struct wildcard_list *curr, *next; |
4323 | lang_wild_statement_type *new; | |
4324 | ||
4325 | /* Reverse the list as the parser puts it back to front. */ | |
4326 | for (curr = section_list, section_list = NULL; | |
4327 | curr != NULL; | |
4328 | section_list = curr, curr = next) | |
4329 | { | |
4330 | if (curr->spec.name != NULL && strcmp (curr->spec.name, "COMMON") == 0) | |
b34976b6 | 4331 | placed_commons = TRUE; |
252b5132 | 4332 | |
b6bf44ba AM |
4333 | next = curr->next; |
4334 | curr->next = section_list; | |
4335 | } | |
4336 | ||
4337 | if (filespec != NULL && filespec->name != NULL) | |
252b5132 | 4338 | { |
b6bf44ba AM |
4339 | if (strcmp (filespec->name, "*") == 0) |
4340 | filespec->name = NULL; | |
4341 | else if (! wildcardp (filespec->name)) | |
b34976b6 | 4342 | lang_has_input_file = TRUE; |
252b5132 | 4343 | } |
b6bf44ba AM |
4344 | |
4345 | new = new_stat (lang_wild_statement, stat_ptr); | |
4346 | new->filename = NULL; | |
b34976b6 | 4347 | new->filenames_sorted = FALSE; |
b6bf44ba | 4348 | if (filespec != NULL) |
252b5132 | 4349 | { |
b6bf44ba AM |
4350 | new->filename = filespec->name; |
4351 | new->filenames_sorted = filespec->sorted; | |
252b5132 | 4352 | } |
b6bf44ba | 4353 | new->section_list = section_list; |
252b5132 | 4354 | new->keep_sections = keep_sections; |
252b5132 RH |
4355 | lang_list_init (&new->children); |
4356 | } | |
4357 | ||
4358 | void | |
1579bae1 | 4359 | lang_section_start (const char *name, etree_type *address) |
252b5132 | 4360 | { |
d1778b88 | 4361 | lang_address_statement_type *ad; |
252b5132 | 4362 | |
d1778b88 | 4363 | ad = new_stat (lang_address_statement, stat_ptr); |
252b5132 RH |
4364 | ad->section_name = name; |
4365 | ad->address = address; | |
4366 | } | |
4367 | ||
4368 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
4369 | because of a -e argument on the command line, or zero if this is | |
4370 | called by ENTRY in a linker script. Command line arguments take | |
4371 | precedence. */ | |
4372 | ||
4373 | void | |
1579bae1 | 4374 | lang_add_entry (const char *name, bfd_boolean cmdline) |
252b5132 | 4375 | { |
e3e942e9 | 4376 | if (entry_symbol.name == NULL |
252b5132 RH |
4377 | || cmdline |
4378 | || ! entry_from_cmdline) | |
4379 | { | |
e3e942e9 | 4380 | entry_symbol.name = name; |
252b5132 RH |
4381 | entry_from_cmdline = cmdline; |
4382 | } | |
4383 | } | |
4384 | ||
4385 | void | |
1579bae1 | 4386 | lang_add_target (const char *name) |
252b5132 RH |
4387 | { |
4388 | lang_target_statement_type *new = new_stat (lang_target_statement, | |
4389 | stat_ptr); | |
4390 | ||
4391 | new->target = name; | |
4392 | ||
4393 | } | |
4394 | ||
4395 | void | |
1579bae1 | 4396 | lang_add_map (const char *name) |
252b5132 RH |
4397 | { |
4398 | while (*name) | |
4399 | { | |
4400 | switch (*name) | |
4401 | { | |
08da4cac | 4402 | case 'F': |
b34976b6 | 4403 | map_option_f = TRUE; |
252b5132 RH |
4404 | break; |
4405 | } | |
4406 | name++; | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | void | |
1579bae1 | 4411 | lang_add_fill (fill_type *fill) |
252b5132 RH |
4412 | { |
4413 | lang_fill_statement_type *new = new_stat (lang_fill_statement, | |
4414 | stat_ptr); | |
4415 | ||
2c382fb6 | 4416 | new->fill = fill; |
252b5132 RH |
4417 | } |
4418 | ||
4419 | void | |
1579bae1 | 4420 | lang_add_data (int type, union etree_union *exp) |
252b5132 RH |
4421 | { |
4422 | ||
4423 | lang_data_statement_type *new = new_stat (lang_data_statement, | |
4424 | stat_ptr); | |
4425 | ||
4426 | new->exp = exp; | |
4427 | new->type = type; | |
4428 | ||
4429 | } | |
4430 | ||
4431 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
4432 | generate. HOWTO is the corresponding howto structure (we could | |
4433 | look this up, but the caller has already done so). SECTION is the | |
4434 | section to generate a reloc against, or NAME is the name of the | |
4435 | symbol to generate a reloc against. Exactly one of SECTION and | |
4436 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
4437 | ||
4438 | void | |
1579bae1 AM |
4439 | lang_add_reloc (bfd_reloc_code_real_type reloc, |
4440 | reloc_howto_type *howto, | |
4441 | asection *section, | |
4442 | const char *name, | |
4443 | union etree_union *addend) | |
252b5132 RH |
4444 | { |
4445 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
5f992e62 | 4446 | |
252b5132 RH |
4447 | p->reloc = reloc; |
4448 | p->howto = howto; | |
4449 | p->section = section; | |
4450 | p->name = name; | |
4451 | p->addend_exp = addend; | |
4452 | ||
4453 | p->addend_value = 0; | |
4454 | p->output_section = NULL; | |
4455 | p->output_vma = 0; | |
4456 | } | |
4457 | ||
4458 | lang_assignment_statement_type * | |
1579bae1 | 4459 | lang_add_assignment (etree_type *exp) |
252b5132 RH |
4460 | { |
4461 | lang_assignment_statement_type *new = new_stat (lang_assignment_statement, | |
4462 | stat_ptr); | |
4463 | ||
4464 | new->exp = exp; | |
4465 | return new; | |
4466 | } | |
4467 | ||
4468 | void | |
1579bae1 | 4469 | lang_add_attribute (enum statement_enum attribute) |
252b5132 RH |
4470 | { |
4471 | new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); | |
4472 | } | |
4473 | ||
4474 | void | |
1579bae1 | 4475 | lang_startup (const char *name) |
252b5132 | 4476 | { |
1579bae1 | 4477 | if (startup_file != NULL) |
252b5132 RH |
4478 | { |
4479 | einfo (_("%P%Fmultiple STARTUP files\n")); | |
4480 | } | |
4481 | first_file->filename = name; | |
4482 | first_file->local_sym_name = name; | |
b34976b6 | 4483 | first_file->real = TRUE; |
252b5132 RH |
4484 | |
4485 | startup_file = name; | |
4486 | } | |
4487 | ||
4488 | void | |
1579bae1 | 4489 | lang_float (bfd_boolean maybe) |
252b5132 RH |
4490 | { |
4491 | lang_float_flag = maybe; | |
4492 | } | |
4493 | ||
ee3cc2e2 RS |
4494 | |
4495 | /* Work out the load- and run-time regions from a script statement, and | |
4496 | store them in *LMA_REGION and *REGION respectively. | |
4497 | ||
a747ee4d NC |
4498 | MEMSPEC is the name of the run-time region, or the value of |
4499 | DEFAULT_MEMORY_REGION if the statement didn't specify one. | |
4500 | LMA_MEMSPEC is the name of the load-time region, or null if the | |
4501 | statement didn't specify one.HAVE_LMA_P is TRUE if the statement | |
4502 | had an explicit load address. | |
ee3cc2e2 RS |
4503 | |
4504 | It is an error to specify both a load region and a load address. */ | |
4505 | ||
4506 | static void | |
6bdafbeb NC |
4507 | lang_get_regions (lang_memory_region_type **region, |
4508 | lang_memory_region_type **lma_region, | |
1579bae1 AM |
4509 | const char *memspec, |
4510 | const char *lma_memspec, | |
6bdafbeb NC |
4511 | bfd_boolean have_lma, |
4512 | bfd_boolean have_vma) | |
ee3cc2e2 | 4513 | { |
a747ee4d | 4514 | *lma_region = lang_memory_region_lookup (lma_memspec, FALSE); |
ee3cc2e2 | 4515 | |
6bdafbeb NC |
4516 | /* If no runtime region or VMA has been specified, but the load region has |
4517 | been specified, then use the load region for the runtime region as well. */ | |
4518 | if (lma_memspec != NULL | |
4519 | && ! have_vma | |
4520 | && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0) | |
ee3cc2e2 RS |
4521 | *region = *lma_region; |
4522 | else | |
a747ee4d | 4523 | *region = lang_memory_region_lookup (memspec, FALSE); |
ee3cc2e2 | 4524 | |
6bdafbeb | 4525 | if (have_lma && lma_memspec != 0) |
ee3cc2e2 RS |
4526 | einfo (_("%X%P:%S: section has both a load address and a load region\n")); |
4527 | } | |
4528 | ||
252b5132 | 4529 | void |
6bdafbeb NC |
4530 | lang_leave_output_section_statement (fill_type *fill, const char *memspec, |
4531 | lang_output_section_phdr_list *phdrs, | |
4532 | const char *lma_memspec) | |
252b5132 | 4533 | { |
ee3cc2e2 RS |
4534 | lang_get_regions (¤t_section->region, |
4535 | ¤t_section->lma_region, | |
4536 | memspec, lma_memspec, | |
6bdafbeb NC |
4537 | current_section->load_base != NULL, |
4538 | current_section->addr_tree != NULL); | |
252b5132 | 4539 | current_section->fill = fill; |
252b5132 RH |
4540 | current_section->phdrs = phdrs; |
4541 | stat_ptr = &statement_list; | |
4542 | } | |
4543 | ||
08da4cac KH |
4544 | /* Create an absolute symbol with the given name with the value of the |
4545 | address of first byte of the section named. | |
4546 | ||
4547 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4548 | |
252b5132 | 4549 | void |
1579bae1 | 4550 | lang_abs_symbol_at_beginning_of (const char *secname, const char *name) |
252b5132 RH |
4551 | { |
4552 | struct bfd_link_hash_entry *h; | |
4553 | ||
b34976b6 | 4554 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 4555 | if (h == NULL) |
252b5132 RH |
4556 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
4557 | ||
4558 | if (h->type == bfd_link_hash_new | |
4559 | || h->type == bfd_link_hash_undefined) | |
4560 | { | |
4561 | asection *sec; | |
4562 | ||
4563 | h->type = bfd_link_hash_defined; | |
4564 | ||
4565 | sec = bfd_get_section_by_name (output_bfd, secname); | |
1579bae1 | 4566 | if (sec == NULL) |
252b5132 RH |
4567 | h->u.def.value = 0; |
4568 | else | |
4569 | h->u.def.value = bfd_get_section_vma (output_bfd, sec); | |
4570 | ||
4571 | h->u.def.section = bfd_abs_section_ptr; | |
4572 | } | |
4573 | } | |
4574 | ||
08da4cac KH |
4575 | /* Create an absolute symbol with the given name with the value of the |
4576 | address of the first byte after the end of the section named. | |
4577 | ||
4578 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4579 | |
252b5132 | 4580 | void |
1579bae1 | 4581 | lang_abs_symbol_at_end_of (const char *secname, const char *name) |
252b5132 RH |
4582 | { |
4583 | struct bfd_link_hash_entry *h; | |
4584 | ||
b34976b6 | 4585 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 4586 | if (h == NULL) |
252b5132 RH |
4587 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
4588 | ||
4589 | if (h->type == bfd_link_hash_new | |
4590 | || h->type == bfd_link_hash_undefined) | |
4591 | { | |
4592 | asection *sec; | |
4593 | ||
4594 | h->type = bfd_link_hash_defined; | |
4595 | ||
4596 | sec = bfd_get_section_by_name (output_bfd, secname); | |
1579bae1 | 4597 | if (sec == NULL) |
252b5132 RH |
4598 | h->u.def.value = 0; |
4599 | else | |
4600 | h->u.def.value = (bfd_get_section_vma (output_bfd, sec) | |
e5caa5e0 | 4601 | + TO_ADDR (bfd_section_size (output_bfd, sec))); |
252b5132 RH |
4602 | |
4603 | h->u.def.section = bfd_abs_section_ptr; | |
4604 | } | |
4605 | } | |
4606 | ||
4607 | void | |
1579bae1 AM |
4608 | lang_statement_append (lang_statement_list_type *list, |
4609 | lang_statement_union_type *element, | |
4610 | lang_statement_union_type **field) | |
252b5132 RH |
4611 | { |
4612 | *(list->tail) = element; | |
4613 | list->tail = field; | |
4614 | } | |
4615 | ||
4616 | /* Set the output format type. -oformat overrides scripts. */ | |
4617 | ||
4618 | void | |
1579bae1 AM |
4619 | lang_add_output_format (const char *format, |
4620 | const char *big, | |
4621 | const char *little, | |
4622 | int from_script) | |
252b5132 RH |
4623 | { |
4624 | if (output_target == NULL || !from_script) | |
4625 | { | |
4626 | if (command_line.endian == ENDIAN_BIG | |
4627 | && big != NULL) | |
4628 | format = big; | |
4629 | else if (command_line.endian == ENDIAN_LITTLE | |
4630 | && little != NULL) | |
4631 | format = little; | |
4632 | ||
4633 | output_target = format; | |
4634 | } | |
4635 | } | |
4636 | ||
4637 | /* Enter a group. This creates a new lang_group_statement, and sets | |
4638 | stat_ptr to build new statements within the group. */ | |
4639 | ||
4640 | void | |
1579bae1 | 4641 | lang_enter_group (void) |
252b5132 RH |
4642 | { |
4643 | lang_group_statement_type *g; | |
4644 | ||
4645 | g = new_stat (lang_group_statement, stat_ptr); | |
4646 | lang_list_init (&g->children); | |
4647 | stat_ptr = &g->children; | |
4648 | } | |
4649 | ||
4650 | /* Leave a group. This just resets stat_ptr to start writing to the | |
4651 | regular list of statements again. Note that this will not work if | |
4652 | groups can occur inside anything else which can adjust stat_ptr, | |
4653 | but currently they can't. */ | |
4654 | ||
4655 | void | |
1579bae1 | 4656 | lang_leave_group (void) |
252b5132 RH |
4657 | { |
4658 | stat_ptr = &statement_list; | |
4659 | } | |
4660 | ||
4661 | /* Add a new program header. This is called for each entry in a PHDRS | |
4662 | command in a linker script. */ | |
4663 | ||
4664 | void | |
1579bae1 AM |
4665 | lang_new_phdr (const char *name, |
4666 | etree_type *type, | |
4667 | bfd_boolean filehdr, | |
4668 | bfd_boolean phdrs, | |
4669 | etree_type *at, | |
4670 | etree_type *flags) | |
252b5132 RH |
4671 | { |
4672 | struct lang_phdr *n, **pp; | |
4673 | ||
1579bae1 | 4674 | n = stat_alloc (sizeof (struct lang_phdr)); |
252b5132 RH |
4675 | n->next = NULL; |
4676 | n->name = name; | |
4677 | n->type = exp_get_value_int (type, 0, "program header type", | |
4678 | lang_final_phase_enum); | |
4679 | n->filehdr = filehdr; | |
4680 | n->phdrs = phdrs; | |
4681 | n->at = at; | |
4682 | n->flags = flags; | |
4683 | ||
4684 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4685 | ; | |
4686 | *pp = n; | |
4687 | } | |
4688 | ||
4689 | /* Record the program header information in the output BFD. FIXME: We | |
4690 | should not be calling an ELF specific function here. */ | |
4691 | ||
4692 | static void | |
1579bae1 | 4693 | lang_record_phdrs (void) |
252b5132 RH |
4694 | { |
4695 | unsigned int alc; | |
4696 | asection **secs; | |
6bdafbeb | 4697 | lang_output_section_phdr_list *last; |
252b5132 RH |
4698 | struct lang_phdr *l; |
4699 | lang_statement_union_type *u; | |
4700 | ||
4701 | alc = 10; | |
1579bae1 | 4702 | secs = xmalloc (alc * sizeof (asection *)); |
252b5132 RH |
4703 | last = NULL; |
4704 | for (l = lang_phdr_list; l != NULL; l = l->next) | |
4705 | { | |
4706 | unsigned int c; | |
4707 | flagword flags; | |
4708 | bfd_vma at; | |
4709 | ||
4710 | c = 0; | |
4711 | for (u = lang_output_section_statement.head; | |
4712 | u != NULL; | |
4713 | u = u->output_section_statement.next) | |
4714 | { | |
4715 | lang_output_section_statement_type *os; | |
6bdafbeb | 4716 | lang_output_section_phdr_list *pl; |
252b5132 RH |
4717 | |
4718 | os = &u->output_section_statement; | |
4719 | ||
4720 | pl = os->phdrs; | |
4721 | if (pl != NULL) | |
4722 | last = pl; | |
4723 | else | |
4724 | { | |
4725 | if (os->sectype == noload_section | |
4726 | || os->bfd_section == NULL | |
4727 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
4728 | continue; | |
4729 | pl = last; | |
4730 | } | |
4731 | ||
4732 | if (os->bfd_section == NULL) | |
4733 | continue; | |
4734 | ||
4735 | for (; pl != NULL; pl = pl->next) | |
4736 | { | |
4737 | if (strcmp (pl->name, l->name) == 0) | |
4738 | { | |
4739 | if (c >= alc) | |
4740 | { | |
4741 | alc *= 2; | |
1579bae1 | 4742 | secs = xrealloc (secs, alc * sizeof (asection *)); |
252b5132 RH |
4743 | } |
4744 | secs[c] = os->bfd_section; | |
4745 | ++c; | |
b34976b6 | 4746 | pl->used = TRUE; |
252b5132 RH |
4747 | } |
4748 | } | |
4749 | } | |
4750 | ||
4751 | if (l->flags == NULL) | |
4752 | flags = 0; | |
4753 | else | |
4754 | flags = exp_get_vma (l->flags, 0, "phdr flags", | |
4755 | lang_final_phase_enum); | |
4756 | ||
4757 | if (l->at == NULL) | |
4758 | at = 0; | |
4759 | else | |
4760 | at = exp_get_vma (l->at, 0, "phdr load address", | |
4761 | lang_final_phase_enum); | |
4762 | ||
4763 | if (! bfd_record_phdr (output_bfd, l->type, | |
d1778b88 | 4764 | l->flags != NULL, flags, l->at != NULL, |
252b5132 RH |
4765 | at, l->filehdr, l->phdrs, c, secs)) |
4766 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); | |
4767 | } | |
4768 | ||
4769 | free (secs); | |
4770 | ||
4771 | /* Make sure all the phdr assignments succeeded. */ | |
4772 | for (u = lang_output_section_statement.head; | |
4773 | u != NULL; | |
4774 | u = u->output_section_statement.next) | |
4775 | { | |
6bdafbeb | 4776 | lang_output_section_phdr_list *pl; |
252b5132 RH |
4777 | |
4778 | if (u->output_section_statement.bfd_section == NULL) | |
4779 | continue; | |
4780 | ||
4781 | for (pl = u->output_section_statement.phdrs; | |
4782 | pl != NULL; | |
4783 | pl = pl->next) | |
4784 | if (! pl->used && strcmp (pl->name, "NONE") != 0) | |
4785 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), | |
4786 | u->output_section_statement.name, pl->name); | |
4787 | } | |
4788 | } | |
4789 | ||
4790 | /* Record a list of sections which may not be cross referenced. */ | |
4791 | ||
4792 | void | |
6bdafbeb | 4793 | lang_add_nocrossref (lang_nocrossref_type *l) |
252b5132 RH |
4794 | { |
4795 | struct lang_nocrossrefs *n; | |
4796 | ||
1579bae1 | 4797 | n = xmalloc (sizeof *n); |
252b5132 RH |
4798 | n->next = nocrossref_list; |
4799 | n->list = l; | |
4800 | nocrossref_list = n; | |
4801 | ||
4802 | /* Set notice_all so that we get informed about all symbols. */ | |
b34976b6 | 4803 | link_info.notice_all = TRUE; |
252b5132 RH |
4804 | } |
4805 | \f | |
4806 | /* Overlay handling. We handle overlays with some static variables. */ | |
4807 | ||
4808 | /* The overlay virtual address. */ | |
4809 | static etree_type *overlay_vma; | |
7e7d5768 AM |
4810 | /* And subsection alignment. */ |
4811 | static etree_type *overlay_subalign; | |
252b5132 | 4812 | |
252b5132 RH |
4813 | /* An expression for the maximum section size seen so far. */ |
4814 | static etree_type *overlay_max; | |
4815 | ||
4816 | /* A list of all the sections in this overlay. */ | |
4817 | ||
89cdebba | 4818 | struct overlay_list { |
252b5132 RH |
4819 | struct overlay_list *next; |
4820 | lang_output_section_statement_type *os; | |
4821 | }; | |
4822 | ||
4823 | static struct overlay_list *overlay_list; | |
4824 | ||
4825 | /* Start handling an overlay. */ | |
4826 | ||
4827 | void | |
7e7d5768 | 4828 | lang_enter_overlay (etree_type *vma_expr, etree_type *subalign) |
252b5132 RH |
4829 | { |
4830 | /* The grammar should prevent nested overlays from occurring. */ | |
7e7d5768 AM |
4831 | ASSERT (overlay_vma == NULL |
4832 | && overlay_subalign == NULL | |
4833 | && overlay_max == NULL); | |
252b5132 RH |
4834 | |
4835 | overlay_vma = vma_expr; | |
7e7d5768 | 4836 | overlay_subalign = subalign; |
252b5132 RH |
4837 | } |
4838 | ||
4839 | /* Start a section in an overlay. We handle this by calling | |
9f88b410 RS |
4840 | lang_enter_output_section_statement with the correct VMA. |
4841 | lang_leave_overlay sets up the LMA and memory regions. */ | |
252b5132 RH |
4842 | |
4843 | void | |
1579bae1 | 4844 | lang_enter_overlay_section (const char *name) |
252b5132 RH |
4845 | { |
4846 | struct overlay_list *n; | |
4847 | etree_type *size; | |
4848 | ||
4849 | lang_enter_output_section_statement (name, overlay_vma, normal_section, | |
e5caa5e0 | 4850 | 0, overlay_subalign, 0); |
252b5132 | 4851 | |
9f88b410 | 4852 | /* If this is the first section, then base the VMA of future |
252b5132 RH |
4853 | sections on this one. This will work correctly even if `.' is |
4854 | used in the addresses. */ | |
4855 | if (overlay_list == NULL) | |
9f88b410 | 4856 | overlay_vma = exp_nameop (ADDR, name); |
252b5132 RH |
4857 | |
4858 | /* Remember the section. */ | |
1579bae1 | 4859 | n = xmalloc (sizeof *n); |
252b5132 RH |
4860 | n->os = current_section; |
4861 | n->next = overlay_list; | |
4862 | overlay_list = n; | |
4863 | ||
4864 | size = exp_nameop (SIZEOF, name); | |
4865 | ||
252b5132 RH |
4866 | /* Arrange to work out the maximum section end address. */ |
4867 | if (overlay_max == NULL) | |
4868 | overlay_max = size; | |
4869 | else | |
4870 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
4871 | } | |
4872 | ||
4873 | /* Finish a section in an overlay. There isn't any special to do | |
4874 | here. */ | |
4875 | ||
4876 | void | |
1579bae1 | 4877 | lang_leave_overlay_section (fill_type *fill, |
6bdafbeb | 4878 | lang_output_section_phdr_list *phdrs) |
252b5132 RH |
4879 | { |
4880 | const char *name; | |
4881 | char *clean, *s2; | |
4882 | const char *s1; | |
4883 | char *buf; | |
4884 | ||
4885 | name = current_section->name; | |
4886 | ||
a747ee4d NC |
4887 | /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory |
4888 | region and that no load-time region has been specified. It doesn't | |
4889 | really matter what we say here, since lang_leave_overlay will | |
4890 | override it. */ | |
4891 | lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0); | |
252b5132 RH |
4892 | |
4893 | /* Define the magic symbols. */ | |
4894 | ||
4895 | clean = xmalloc (strlen (name) + 1); | |
4896 | s2 = clean; | |
4897 | for (s1 = name; *s1 != '\0'; s1++) | |
3882b010 | 4898 | if (ISALNUM (*s1) || *s1 == '_') |
252b5132 RH |
4899 | *s2++ = *s1; |
4900 | *s2 = '\0'; | |
4901 | ||
4902 | buf = xmalloc (strlen (clean) + sizeof "__load_start_"); | |
4903 | sprintf (buf, "__load_start_%s", clean); | |
4904 | lang_add_assignment (exp_assop ('=', buf, | |
4905 | exp_nameop (LOADADDR, name))); | |
4906 | ||
4907 | buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); | |
4908 | sprintf (buf, "__load_stop_%s", clean); | |
4909 | lang_add_assignment (exp_assop ('=', buf, | |
4910 | exp_binop ('+', | |
4911 | exp_nameop (LOADADDR, name), | |
4912 | exp_nameop (SIZEOF, name)))); | |
4913 | ||
4914 | free (clean); | |
4915 | } | |
4916 | ||
4917 | /* Finish an overlay. If there are any overlay wide settings, this | |
4918 | looks through all the sections in the overlay and sets them. */ | |
4919 | ||
4920 | void | |
1579bae1 AM |
4921 | lang_leave_overlay (etree_type *lma_expr, |
4922 | int nocrossrefs, | |
4923 | fill_type *fill, | |
4924 | const char *memspec, | |
6bdafbeb | 4925 | lang_output_section_phdr_list *phdrs, |
1579bae1 | 4926 | const char *lma_memspec) |
252b5132 RH |
4927 | { |
4928 | lang_memory_region_type *region; | |
562d3460 | 4929 | lang_memory_region_type *lma_region; |
252b5132 | 4930 | struct overlay_list *l; |
6bdafbeb | 4931 | lang_nocrossref_type *nocrossref; |
252b5132 | 4932 | |
ee3cc2e2 RS |
4933 | lang_get_regions (®ion, &lma_region, |
4934 | memspec, lma_memspec, | |
6bdafbeb | 4935 | lma_expr != NULL, FALSE); |
562d3460 | 4936 | |
252b5132 RH |
4937 | nocrossref = NULL; |
4938 | ||
9f88b410 RS |
4939 | /* After setting the size of the last section, set '.' to end of the |
4940 | overlay region. */ | |
4941 | if (overlay_list != NULL) | |
4942 | overlay_list->os->update_dot_tree | |
4943 | = exp_assop ('=', ".", exp_binop ('+', overlay_vma, overlay_max)); | |
4944 | ||
252b5132 RH |
4945 | l = overlay_list; |
4946 | while (l != NULL) | |
4947 | { | |
4948 | struct overlay_list *next; | |
4949 | ||
1579bae1 | 4950 | if (fill != NULL && l->os->fill == NULL) |
252b5132 | 4951 | l->os->fill = fill; |
1545243b | 4952 | |
9f88b410 RS |
4953 | l->os->region = region; |
4954 | l->os->lma_region = lma_region; | |
4955 | ||
4956 | /* The first section has the load address specified in the | |
4957 | OVERLAY statement. The rest are worked out from that. | |
4958 | The base address is not needed (and should be null) if | |
4959 | an LMA region was specified. */ | |
4960 | if (l->next == 0) | |
4961 | l->os->load_base = lma_expr; | |
4962 | else if (lma_region == 0) | |
4963 | l->os->load_base = exp_binop ('+', | |
4964 | exp_nameop (LOADADDR, l->next->os->name), | |
4965 | exp_nameop (SIZEOF, l->next->os->name)); | |
1545243b | 4966 | |
252b5132 RH |
4967 | if (phdrs != NULL && l->os->phdrs == NULL) |
4968 | l->os->phdrs = phdrs; | |
4969 | ||
9f88b410 | 4970 | if (nocrossrefs) |
252b5132 | 4971 | { |
6bdafbeb | 4972 | lang_nocrossref_type *nc; |
252b5132 | 4973 | |
1579bae1 | 4974 | nc = xmalloc (sizeof *nc); |
252b5132 RH |
4975 | nc->name = l->os->name; |
4976 | nc->next = nocrossref; | |
4977 | nocrossref = nc; | |
4978 | } | |
4979 | ||
4980 | next = l->next; | |
4981 | free (l); | |
4982 | l = next; | |
4983 | } | |
4984 | ||
4985 | if (nocrossref != NULL) | |
4986 | lang_add_nocrossref (nocrossref); | |
4987 | ||
252b5132 | 4988 | overlay_vma = NULL; |
252b5132 RH |
4989 | overlay_list = NULL; |
4990 | overlay_max = NULL; | |
4991 | } | |
4992 | \f | |
4993 | /* Version handling. This is only useful for ELF. */ | |
4994 | ||
4995 | /* This global variable holds the version tree that we build. */ | |
4996 | ||
4997 | struct bfd_elf_version_tree *lang_elf_version_info; | |
4998 | ||
108ba305 JJ |
4999 | /* If PREV is NULL, return first version pattern matching particular symbol. |
5000 | If PREV is non-NULL, return first version pattern matching particular | |
5001 | symbol after PREV (previously returned by lang_vers_match). */ | |
252b5132 | 5002 | |
108ba305 JJ |
5003 | static struct bfd_elf_version_expr * |
5004 | lang_vers_match (struct bfd_elf_version_expr_head *head, | |
5005 | struct bfd_elf_version_expr *prev, | |
5006 | const char *sym) | |
252b5132 | 5007 | { |
108ba305 JJ |
5008 | const char *cxx_sym = sym; |
5009 | const char *java_sym = sym; | |
5010 | struct bfd_elf_version_expr *expr = NULL; | |
252b5132 | 5011 | |
108ba305 | 5012 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) |
252b5132 | 5013 | { |
2f97444a | 5014 | cxx_sym = cplus_demangle (sym, DMGL_PARAMS | DMGL_ANSI); |
108ba305 JJ |
5015 | if (!cxx_sym) |
5016 | cxx_sym = sym; | |
252b5132 | 5017 | } |
df816215 | 5018 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) |
252b5132 | 5019 | { |
108ba305 JJ |
5020 | java_sym = cplus_demangle (sym, DMGL_JAVA); |
5021 | if (!java_sym) | |
5022 | java_sym = sym; | |
252b5132 RH |
5023 | } |
5024 | ||
5e35cbc2 | 5025 | if (head->htab && (prev == NULL || prev->symbol)) |
252b5132 | 5026 | { |
108ba305 JJ |
5027 | struct bfd_elf_version_expr e; |
5028 | ||
5029 | switch (prev ? prev->mask : 0) | |
5030 | { | |
5031 | case 0: | |
5032 | if (head->mask & BFD_ELF_VERSION_C_TYPE) | |
5033 | { | |
5e35cbc2 | 5034 | e.symbol = sym; |
108ba305 | 5035 | expr = htab_find (head->htab, &e); |
5e35cbc2 | 5036 | while (expr && strcmp (expr->symbol, sym) == 0) |
108ba305 JJ |
5037 | if (expr->mask == BFD_ELF_VERSION_C_TYPE) |
5038 | goto out_ret; | |
5039 | else | |
5040 | expr = expr->next; | |
5041 | } | |
5042 | /* Fallthrough */ | |
5043 | case BFD_ELF_VERSION_C_TYPE: | |
5044 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) | |
5045 | { | |
5e35cbc2 | 5046 | e.symbol = cxx_sym; |
108ba305 | 5047 | expr = htab_find (head->htab, &e); |
7a995eb3 | 5048 | while (expr && strcmp (expr->symbol, cxx_sym) == 0) |
108ba305 JJ |
5049 | if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) |
5050 | goto out_ret; | |
5051 | else | |
5052 | expr = expr->next; | |
5053 | } | |
5054 | /* Fallthrough */ | |
5055 | case BFD_ELF_VERSION_CXX_TYPE: | |
5056 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) | |
5057 | { | |
5e35cbc2 | 5058 | e.symbol = java_sym; |
108ba305 | 5059 | expr = htab_find (head->htab, &e); |
7a995eb3 | 5060 | while (expr && strcmp (expr->symbol, java_sym) == 0) |
108ba305 JJ |
5061 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) |
5062 | goto out_ret; | |
5063 | else | |
5064 | expr = expr->next; | |
5065 | } | |
5066 | /* Fallthrough */ | |
5067 | default: | |
5068 | break; | |
5069 | } | |
252b5132 | 5070 | } |
108ba305 JJ |
5071 | |
5072 | /* Finally, try the wildcards. */ | |
5e35cbc2 | 5073 | if (prev == NULL || prev->symbol) |
108ba305 | 5074 | expr = head->remaining; |
252b5132 | 5075 | else |
108ba305 JJ |
5076 | expr = prev->next; |
5077 | while (expr) | |
252b5132 | 5078 | { |
108ba305 JJ |
5079 | const char *s; |
5080 | ||
5081 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
5082 | break; | |
5083 | ||
5084 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) | |
5085 | s = java_sym; | |
5086 | else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) | |
5087 | s = cxx_sym; | |
5088 | else | |
5089 | s = sym; | |
5e35cbc2 | 5090 | if (fnmatch (expr->pattern, s, 0) == 0) |
108ba305 JJ |
5091 | break; |
5092 | expr = expr->next; | |
252b5132 RH |
5093 | } |
5094 | ||
108ba305 JJ |
5095 | out_ret: |
5096 | if (cxx_sym != sym) | |
5097 | free ((char *) cxx_sym); | |
5098 | if (java_sym != sym) | |
5099 | free ((char *) java_sym); | |
5100 | return expr; | |
252b5132 RH |
5101 | } |
5102 | ||
5e35cbc2 L |
5103 | /* Return NULL if the PATTERN argument is a glob pattern, otherwise, |
5104 | return a string pointing to the symbol name. */ | |
5105 | ||
5106 | static const char * | |
5107 | realsymbol (const char *pattern) | |
5108 | { | |
5109 | const char *p; | |
5110 | bfd_boolean changed = FALSE, backslash = FALSE; | |
5111 | char *s, *symbol = xmalloc (strlen (pattern) + 1); | |
5112 | ||
5113 | for (p = pattern, s = symbol; *p != '\0'; ++p) | |
5114 | { | |
5115 | /* It is a glob pattern only if there is no preceding | |
5116 | backslash. */ | |
5117 | if (! backslash && (*p == '?' || *p == '*' || *p == '[')) | |
5118 | { | |
5119 | free (symbol); | |
5120 | return NULL; | |
5121 | } | |
5122 | ||
5123 | if (backslash) | |
5124 | { | |
5125 | /* Remove the preceding backslash. */ | |
5126 | *(s - 1) = *p; | |
5127 | changed = TRUE; | |
5128 | } | |
5129 | else | |
5130 | *s++ = *p; | |
5131 | ||
5132 | backslash = *p == '\\'; | |
5133 | } | |
5134 | ||
5135 | if (changed) | |
5136 | { | |
5137 | *s = '\0'; | |
5138 | return symbol; | |
5139 | } | |
5140 | else | |
5141 | { | |
5142 | free (symbol); | |
5143 | return pattern; | |
5144 | } | |
5145 | } | |
5146 | ||
252b5132 RH |
5147 | /* This is called for each variable name or match expression. */ |
5148 | ||
5149 | struct bfd_elf_version_expr * | |
1579bae1 AM |
5150 | lang_new_vers_pattern (struct bfd_elf_version_expr *orig, |
5151 | const char *new, | |
5152 | const char *lang) | |
252b5132 RH |
5153 | { |
5154 | struct bfd_elf_version_expr *ret; | |
5155 | ||
1579bae1 | 5156 | ret = xmalloc (sizeof *ret); |
252b5132 RH |
5157 | ret->next = orig; |
5158 | ret->pattern = new; | |
31941635 L |
5159 | ret->symver = 0; |
5160 | ret->script = 0; | |
5e35cbc2 | 5161 | ret->symbol = realsymbol (new); |
252b5132 RH |
5162 | |
5163 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
108ba305 | 5164 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 | 5165 | else if (strcasecmp (lang, "C++") == 0) |
108ba305 | 5166 | ret->mask = BFD_ELF_VERSION_CXX_TYPE; |
252b5132 | 5167 | else if (strcasecmp (lang, "Java") == 0) |
108ba305 | 5168 | ret->mask = BFD_ELF_VERSION_JAVA_TYPE; |
252b5132 RH |
5169 | else |
5170 | { | |
5171 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
5172 | lang); | |
108ba305 | 5173 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 RH |
5174 | } |
5175 | ||
fac1652d | 5176 | return ldemul_new_vers_pattern (ret); |
252b5132 RH |
5177 | } |
5178 | ||
5179 | /* This is called for each set of variable names and match | |
5180 | expressions. */ | |
5181 | ||
5182 | struct bfd_elf_version_tree * | |
1579bae1 AM |
5183 | lang_new_vers_node (struct bfd_elf_version_expr *globals, |
5184 | struct bfd_elf_version_expr *locals) | |
252b5132 RH |
5185 | { |
5186 | struct bfd_elf_version_tree *ret; | |
5187 | ||
108ba305 JJ |
5188 | ret = xcalloc (1, sizeof *ret); |
5189 | ret->globals.list = globals; | |
5190 | ret->locals.list = locals; | |
5191 | ret->match = lang_vers_match; | |
252b5132 | 5192 | ret->name_indx = (unsigned int) -1; |
252b5132 RH |
5193 | return ret; |
5194 | } | |
5195 | ||
5196 | /* This static variable keeps track of version indices. */ | |
5197 | ||
5198 | static int version_index; | |
5199 | ||
108ba305 JJ |
5200 | static hashval_t |
5201 | version_expr_head_hash (const void *p) | |
5202 | { | |
5203 | const struct bfd_elf_version_expr *e = p; | |
5204 | ||
5e35cbc2 | 5205 | return htab_hash_string (e->symbol); |
108ba305 JJ |
5206 | } |
5207 | ||
5208 | static int | |
5209 | version_expr_head_eq (const void *p1, const void *p2) | |
5210 | { | |
5211 | const struct bfd_elf_version_expr *e1 = p1; | |
5212 | const struct bfd_elf_version_expr *e2 = p2; | |
5213 | ||
5e35cbc2 | 5214 | return strcmp (e1->symbol, e2->symbol) == 0; |
108ba305 JJ |
5215 | } |
5216 | ||
5217 | static void | |
5218 | lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head) | |
5219 | { | |
5220 | size_t count = 0; | |
5221 | struct bfd_elf_version_expr *e, *next; | |
5222 | struct bfd_elf_version_expr **list_loc, **remaining_loc; | |
5223 | ||
5224 | for (e = head->list; e; e = e->next) | |
5225 | { | |
5e35cbc2 | 5226 | if (e->symbol) |
108ba305 JJ |
5227 | count++; |
5228 | head->mask |= e->mask; | |
5229 | } | |
5230 | ||
5231 | if (count) | |
5232 | { | |
5233 | head->htab = htab_create (count * 2, version_expr_head_hash, | |
5234 | version_expr_head_eq, NULL); | |
5235 | list_loc = &head->list; | |
5236 | remaining_loc = &head->remaining; | |
5237 | for (e = head->list; e; e = next) | |
5238 | { | |
5239 | next = e->next; | |
5e35cbc2 | 5240 | if (!e->symbol) |
108ba305 JJ |
5241 | { |
5242 | *remaining_loc = e; | |
5243 | remaining_loc = &e->next; | |
5244 | } | |
5245 | else | |
5246 | { | |
5247 | void **loc = htab_find_slot (head->htab, e, INSERT); | |
5248 | ||
5249 | if (*loc) | |
5250 | { | |
5251 | struct bfd_elf_version_expr *e1, *last; | |
5252 | ||
5253 | e1 = *loc; | |
5254 | last = NULL; | |
5255 | do | |
5256 | { | |
5257 | if (e1->mask == e->mask) | |
5258 | { | |
5259 | last = NULL; | |
5260 | break; | |
5261 | } | |
5262 | last = e1; | |
5263 | e1 = e1->next; | |
5264 | } | |
5e35cbc2 | 5265 | while (e1 && strcmp (e1->symbol, e->symbol) == 0); |
108ba305 JJ |
5266 | |
5267 | if (last == NULL) | |
5268 | { | |
5269 | /* This is a duplicate. */ | |
5270 | /* FIXME: Memory leak. Sometimes pattern is not | |
5271 | xmalloced alone, but in larger chunk of memory. */ | |
5e35cbc2 | 5272 | /* free (e->symbol); */ |
108ba305 JJ |
5273 | free (e); |
5274 | } | |
5275 | else | |
5276 | { | |
5277 | e->next = last->next; | |
5278 | last->next = e; | |
5279 | } | |
5280 | } | |
5281 | else | |
5282 | { | |
5283 | *loc = e; | |
5284 | *list_loc = e; | |
5285 | list_loc = &e->next; | |
5286 | } | |
5287 | } | |
5288 | } | |
5289 | *remaining_loc = NULL; | |
5290 | *list_loc = head->remaining; | |
5291 | } | |
5292 | else | |
5293 | head->remaining = head->list; | |
5294 | } | |
5295 | ||
252b5132 RH |
5296 | /* This is called when we know the name and dependencies of the |
5297 | version. */ | |
5298 | ||
5299 | void | |
1579bae1 AM |
5300 | lang_register_vers_node (const char *name, |
5301 | struct bfd_elf_version_tree *version, | |
5302 | struct bfd_elf_version_deps *deps) | |
252b5132 RH |
5303 | { |
5304 | struct bfd_elf_version_tree *t, **pp; | |
5305 | struct bfd_elf_version_expr *e1; | |
5306 | ||
6b9b879a JJ |
5307 | if (name == NULL) |
5308 | name = ""; | |
5309 | ||
5310 | if ((name[0] == '\0' && lang_elf_version_info != NULL) | |
5311 | || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0')) | |
5312 | { | |
5313 | einfo (_("%X%P: anonymous version tag cannot be combined with other version tags\n")); | |
5ed6aba4 | 5314 | free (version); |
6b9b879a JJ |
5315 | return; |
5316 | } | |
5317 | ||
252b5132 RH |
5318 | /* Make sure this node has a unique name. */ |
5319 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5320 | if (strcmp (t->name, name) == 0) | |
5321 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
5322 | ||
108ba305 JJ |
5323 | lang_finalize_version_expr_head (&version->globals); |
5324 | lang_finalize_version_expr_head (&version->locals); | |
5325 | ||
252b5132 RH |
5326 | /* Check the global and local match names, and make sure there |
5327 | aren't any duplicates. */ | |
5328 | ||
108ba305 | 5329 | for (e1 = version->globals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
5330 | { |
5331 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5332 | { | |
5333 | struct bfd_elf_version_expr *e2; | |
5334 | ||
5e35cbc2 | 5335 | if (t->locals.htab && e1->symbol) |
108ba305 JJ |
5336 | { |
5337 | e2 = htab_find (t->locals.htab, e1); | |
5e35cbc2 | 5338 | while (e2 && strcmp (e1->symbol, e2->symbol) == 0) |
108ba305 JJ |
5339 | { |
5340 | if (e1->mask == e2->mask) | |
5341 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
5e35cbc2 | 5342 | e1->symbol); |
108ba305 JJ |
5343 | e2 = e2->next; |
5344 | } | |
5345 | } | |
5e35cbc2 | 5346 | else if (!e1->symbol) |
108ba305 JJ |
5347 | for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next) |
5348 | if (strcmp (e1->pattern, e2->pattern) == 0 && e1->mask == e2->mask) | |
5349 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
5350 | e1->pattern); | |
252b5132 RH |
5351 | } |
5352 | } | |
5353 | ||
108ba305 | 5354 | for (e1 = version->locals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
5355 | { |
5356 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5357 | { | |
5358 | struct bfd_elf_version_expr *e2; | |
5359 | ||
5e35cbc2 | 5360 | if (t->globals.htab && e1->symbol) |
108ba305 JJ |
5361 | { |
5362 | e2 = htab_find (t->globals.htab, e1); | |
5e35cbc2 | 5363 | while (e2 && strcmp (e1->symbol, e2->symbol) == 0) |
108ba305 JJ |
5364 | { |
5365 | if (e1->mask == e2->mask) | |
5366 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
5e35cbc2 | 5367 | e1->symbol); |
108ba305 JJ |
5368 | e2 = e2->next; |
5369 | } | |
5370 | } | |
5e35cbc2 | 5371 | else if (!e1->symbol) |
108ba305 JJ |
5372 | for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next) |
5373 | if (strcmp (e1->pattern, e2->pattern) == 0 && e1->mask == e2->mask) | |
5374 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
5375 | e1->pattern); | |
252b5132 RH |
5376 | } |
5377 | } | |
5378 | ||
5379 | version->deps = deps; | |
5380 | version->name = name; | |
6b9b879a JJ |
5381 | if (name[0] != '\0') |
5382 | { | |
5383 | ++version_index; | |
5384 | version->vernum = version_index; | |
5385 | } | |
5386 | else | |
5387 | version->vernum = 0; | |
252b5132 RH |
5388 | |
5389 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) | |
5390 | ; | |
5391 | *pp = version; | |
5392 | } | |
5393 | ||
5394 | /* This is called when we see a version dependency. */ | |
5395 | ||
5396 | struct bfd_elf_version_deps * | |
1579bae1 | 5397 | lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name) |
252b5132 RH |
5398 | { |
5399 | struct bfd_elf_version_deps *ret; | |
5400 | struct bfd_elf_version_tree *t; | |
5401 | ||
1579bae1 | 5402 | ret = xmalloc (sizeof *ret); |
252b5132 RH |
5403 | ret->next = list; |
5404 | ||
5405 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5406 | { | |
5407 | if (strcmp (t->name, name) == 0) | |
5408 | { | |
5409 | ret->version_needed = t; | |
5410 | return ret; | |
5411 | } | |
5412 | } | |
5413 | ||
5414 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
5415 | ||
5416 | return ret; | |
5417 | } | |
5418 | ||
5419 | static void | |
1579bae1 | 5420 | lang_do_version_exports_section (void) |
252b5132 RH |
5421 | { |
5422 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
5423 | ||
5424 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
5425 | { | |
5426 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
5427 | char *contents, *p; | |
5428 | bfd_size_type len; | |
5429 | ||
5430 | if (sec == NULL) | |
b7a26f91 | 5431 | continue; |
252b5132 RH |
5432 | |
5433 | len = bfd_section_size (is->the_bfd, sec); | |
5434 | contents = xmalloc (len); | |
5435 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) | |
6f9efd97 | 5436 | einfo (_("%X%P: unable to read .exports section contents\n"), sec); |
252b5132 RH |
5437 | |
5438 | p = contents; | |
89cdebba | 5439 | while (p < contents + len) |
252b5132 | 5440 | { |
313e35ee | 5441 | greg = lang_new_vers_pattern (greg, p, NULL); |
252b5132 RH |
5442 | p = strchr (p, '\0') + 1; |
5443 | } | |
5444 | ||
5445 | /* Do not free the contents, as we used them creating the regex. */ | |
5446 | ||
5447 | /* Do not include this section in the link. */ | |
5448 | bfd_set_section_flags (is->the_bfd, sec, | |
5449 | bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE); | |
5450 | } | |
5451 | ||
313e35ee | 5452 | lreg = lang_new_vers_pattern (NULL, "*", NULL); |
252b5132 RH |
5453 | lang_register_vers_node (command_line.version_exports_section, |
5454 | lang_new_vers_node (greg, lreg), NULL); | |
5455 | } | |
577a0623 AM |
5456 | |
5457 | void | |
1579bae1 | 5458 | lang_add_unique (const char *name) |
577a0623 AM |
5459 | { |
5460 | struct unique_sections *ent; | |
5461 | ||
5462 | for (ent = unique_section_list; ent; ent = ent->next) | |
5463 | if (strcmp (ent->name, name) == 0) | |
5464 | return; | |
5465 | ||
1579bae1 | 5466 | ent = xmalloc (sizeof *ent); |
577a0623 AM |
5467 | ent->name = xstrdup (name); |
5468 | ent->next = unique_section_list; | |
5469 | unique_section_list = ent; | |
5470 | } |