Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
a2b64bed | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
c4b78195 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
f96b4a7b | 6 | This file is part of the GNU Binutils. |
252b5132 | 7 | |
f96b4a7b | 8 | This program is free software; you can redistribute it and/or modify |
53b2a62f | 9 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
10 | the Free Software Foundation; either version 3 of the License, or |
11 | (at your option) any later version. | |
252b5132 | 12 | |
f96b4a7b | 13 | This program is distributed in the hope that it will be useful, |
53b2a62f NC |
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 | 18 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 | 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 | 49 | static struct obstack stat_obstack; |
35835446 | 50 | static struct obstack map_obstack; |
252b5132 RH |
51 | |
52 | #define obstack_chunk_alloc xmalloc | |
53 | #define obstack_chunk_free free | |
5f992e62 | 54 | static const char *startup_file; |
8be573a7 | 55 | static const char *entry_symbol_default = "start"; |
b34976b6 | 56 | static bfd_boolean placed_commons = FALSE; |
8423293d | 57 | static bfd_boolean stripped_excluded_sections = FALSE; |
252b5132 | 58 | static lang_output_section_statement_type *default_common_section; |
b34976b6 | 59 | static bfd_boolean map_option_f; |
252b5132 RH |
60 | static bfd_vma print_dot; |
61 | static lang_input_statement_type *first_file; | |
5f992e62 | 62 | static const char *current_target; |
252b5132 | 63 | static lang_statement_list_type statement_list; |
420e579c | 64 | static struct bfd_hash_table lang_definedness_table; |
bde18da4 AM |
65 | static lang_statement_list_type *stat_save[10]; |
66 | static lang_statement_list_type **stat_save_ptr = &stat_save[0]; | |
c4b78195 NC |
67 | static struct unique_sections *unique_section_list; |
68 | static bfd_boolean ldlang_sysrooted_script = FALSE; | |
252b5132 | 69 | |
cf888e70 | 70 | /* Forward declarations. */ |
a431bc2e | 71 | static void exp_init_os (etree_type *); |
35835446 | 72 | static void init_map_userdata (bfd *, asection *, void *); |
1579bae1 | 73 | static lang_input_statement_type *lookup_name (const char *); |
420e579c HPN |
74 | static struct bfd_hash_entry *lang_definedness_newfunc |
75 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
1579bae1 | 76 | static void insert_undefined (const char *); |
35835446 | 77 | static bfd_boolean sort_def_symbol (struct bfd_link_hash_entry *, void *); |
1579bae1 AM |
78 | static void print_statement (lang_statement_union_type *, |
79 | lang_output_section_statement_type *); | |
80 | static void print_statement_list (lang_statement_union_type *, | |
81 | lang_output_section_statement_type *); | |
82 | static void print_statements (void); | |
d64703c6 | 83 | static void print_input_section (asection *, bfd_boolean); |
1579bae1 AM |
84 | static bfd_boolean lang_one_common (struct bfd_link_hash_entry *, void *); |
85 | static void lang_record_phdrs (void); | |
86 | static void lang_do_version_exports_section (void); | |
55255dae L |
87 | static void lang_finalize_version_expr_head |
88 | (struct bfd_elf_version_expr_head *); | |
1579bae1 | 89 | |
cf888e70 | 90 | /* Exported variables. */ |
8be573a7 | 91 | const char *output_target; |
252b5132 | 92 | lang_output_section_statement_type *abs_output_section; |
aea4bd9d | 93 | lang_statement_list_type lang_output_section_statement; |
252b5132 | 94 | lang_statement_list_type *stat_ptr = &statement_list; |
87f2a346 | 95 | lang_statement_list_type file_chain = { NULL, NULL }; |
dc27aea4 | 96 | lang_statement_list_type input_file_chain; |
e3e942e9 | 97 | struct bfd_sym_chain entry_symbol = { NULL, NULL }; |
1e281515 | 98 | const char *entry_section = ".text"; |
b34976b6 AM |
99 | bfd_boolean entry_from_cmdline; |
100 | bfd_boolean lang_has_input_file = FALSE; | |
101 | bfd_boolean had_output_filename = FALSE; | |
102 | bfd_boolean lang_float_flag = FALSE; | |
103 | bfd_boolean delete_output_file_on_failure = FALSE; | |
f5ff60a6 | 104 | struct lang_phdr *lang_phdr_list; |
252b5132 | 105 | struct lang_nocrossrefs *nocrossref_list; |
c4b78195 | 106 | bfd_boolean missing_file = FALSE; |
e9ee469a AM |
107 | |
108 | /* Functions that traverse the linker script and might evaluate | |
109 | DEFINED() need to increment this. */ | |
420e579c | 110 | int lang_statement_iteration = 0; |
252b5132 RH |
111 | |
112 | etree_type *base; /* Relocation base - or null */ | |
113 | ||
61f5d054 L |
114 | /* Return TRUE if the PATTERN argument is a wildcard pattern. |
115 | Although backslashes are treated specially if a pattern contains | |
116 | wildcards, we do not consider the mere presence of a backslash to | |
117 | be enough to cause the pattern to be treated as a wildcard. | |
118 | That lets us handle DOS filenames more naturally. */ | |
119 | #define wildcardp(pattern) (strpbrk ((pattern), "?*[") != NULL) | |
120 | ||
d1778b88 | 121 | #define new_stat(x, y) \ |
1579bae1 | 122 | (x##_type *) new_statement (x##_enum, sizeof (x##_type), y) |
252b5132 | 123 | |
d1778b88 AM |
124 | #define outside_section_address(q) \ |
125 | ((q)->output_offset + (q)->output_section->vma) | |
252b5132 | 126 | |
d1778b88 AM |
127 | #define outside_symbol_address(q) \ |
128 | ((q)->value + outside_section_address (q->section)) | |
252b5132 RH |
129 | |
130 | #define SECTION_NAME_MAP_LENGTH (16) | |
131 | ||
1579bae1 AM |
132 | void * |
133 | stat_alloc (size_t size) | |
252b5132 RH |
134 | { |
135 | return obstack_alloc (&stat_obstack, size); | |
136 | } | |
137 | ||
97407faf AM |
138 | static int |
139 | name_match (const char *pattern, const char *name) | |
140 | { | |
141 | if (wildcardp (pattern)) | |
142 | return fnmatch (pattern, name, 0); | |
143 | return strcmp (pattern, name); | |
144 | } | |
145 | ||
146 | /* If PATTERN is of the form archive:file, return a pointer to the | |
147 | separator. If not, return NULL. */ | |
148 | ||
149 | static char * | |
150 | archive_path (const char *pattern) | |
151 | { | |
152 | char *p = NULL; | |
153 | ||
154 | if (link_info.path_separator == 0) | |
155 | return p; | |
156 | ||
157 | p = strchr (pattern, link_info.path_separator); | |
158 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
159 | if (p == NULL || link_info.path_separator != ':') | |
160 | return p; | |
161 | ||
162 | /* Assume a match on the second char is part of drive specifier, | |
163 | as in "c:\silly.dos". */ | |
967928e9 | 164 | if (p == pattern + 1 && ISALPHA (*pattern)) |
97407faf AM |
165 | p = strchr (p + 1, link_info.path_separator); |
166 | #endif | |
167 | return p; | |
168 | } | |
169 | ||
967928e9 AM |
170 | /* Given that FILE_SPEC results in a non-NULL SEP result from archive_path, |
171 | return whether F matches FILE_SPEC. */ | |
172 | ||
173 | static bfd_boolean | |
174 | input_statement_is_archive_path (const char *file_spec, char *sep, | |
175 | lang_input_statement_type *f) | |
176 | { | |
177 | bfd_boolean match = FALSE; | |
178 | ||
179 | if ((*(sep + 1) == 0 | |
180 | || name_match (sep + 1, f->filename) == 0) | |
181 | && ((sep != file_spec) | |
182 | == (f->the_bfd != NULL && f->the_bfd->my_archive != NULL))) | |
183 | { | |
184 | match = TRUE; | |
185 | ||
186 | if (sep != file_spec) | |
187 | { | |
188 | const char *aname = f->the_bfd->my_archive->filename; | |
189 | *sep = 0; | |
190 | match = name_match (file_spec, aname) == 0; | |
191 | *sep = link_info.path_separator; | |
192 | } | |
193 | } | |
194 | return match; | |
195 | } | |
196 | ||
8a99a385 | 197 | static bfd_boolean |
d0bf826b AM |
198 | unique_section_p (const asection *sec, |
199 | const lang_output_section_statement_type *os) | |
577a0623 AM |
200 | { |
201 | struct unique_sections *unam; | |
d0d6a25b | 202 | const char *secnam; |
577a0623 | 203 | |
d0d6a25b AM |
204 | if (link_info.relocatable |
205 | && sec->owner != NULL | |
206 | && bfd_is_group_section (sec->owner, sec)) | |
d0bf826b AM |
207 | return !(os != NULL |
208 | && strcmp (os->name, DISCARD_SECTION_NAME) == 0); | |
d0d6a25b AM |
209 | |
210 | secnam = sec->name; | |
577a0623 | 211 | for (unam = unique_section_list; unam; unam = unam->next) |
97407faf AM |
212 | if (name_match (unam->name, secnam) == 0) |
213 | return TRUE; | |
577a0623 | 214 | |
b34976b6 | 215 | return FALSE; |
577a0623 AM |
216 | } |
217 | ||
08da4cac | 218 | /* Generic traversal routines for finding matching sections. */ |
4dec4d4e | 219 | |
72223188 JJ |
220 | /* Try processing a section against a wildcard. This just calls |
221 | the callback unless the filename exclusion list is present | |
222 | and excludes the file. It's hardly ever present so this | |
223 | function is very fast. */ | |
224 | ||
4dec4d4e | 225 | static void |
72223188 JJ |
226 | walk_wild_consider_section (lang_wild_statement_type *ptr, |
227 | lang_input_statement_type *file, | |
228 | asection *s, | |
229 | struct wildcard_list *sec, | |
230 | callback_t callback, | |
231 | void *data) | |
4dec4d4e | 232 | { |
72223188 JJ |
233 | struct name_list *list_tmp; |
234 | ||
97407faf | 235 | /* Don't process sections from files which were excluded. */ |
72223188 JJ |
236 | for (list_tmp = sec->spec.exclude_name_list; |
237 | list_tmp; | |
238 | list_tmp = list_tmp->next) | |
239 | { | |
967928e9 | 240 | char *p = archive_path (list_tmp->name); |
b6bf44ba | 241 | |
967928e9 | 242 | if (p != NULL) |
72223188 | 243 | { |
967928e9 AM |
244 | if (input_statement_is_archive_path (list_tmp->name, p, file)) |
245 | return; | |
72223188 JJ |
246 | } |
247 | ||
967928e9 AM |
248 | else if (name_match (list_tmp->name, file->filename) == 0) |
249 | return; | |
250 | ||
251 | /* FIXME: Perhaps remove the following at some stage? Matching | |
252 | unadorned archives like this was never documented and has | |
253 | been superceded by the archive:path syntax. */ | |
254 | else if (file->the_bfd != NULL | |
255 | && file->the_bfd->my_archive != NULL | |
256 | && name_match (list_tmp->name, | |
257 | file->the_bfd->my_archive->filename) == 0) | |
258 | return; | |
72223188 JJ |
259 | } |
260 | ||
967928e9 | 261 | (*callback) (ptr, sec, s, file, data); |
72223188 JJ |
262 | } |
263 | ||
264 | /* Lowest common denominator routine that can handle everything correctly, | |
265 | but slowly. */ | |
266 | ||
267 | static void | |
268 | walk_wild_section_general (lang_wild_statement_type *ptr, | |
269 | lang_input_statement_type *file, | |
270 | callback_t callback, | |
271 | void *data) | |
272 | { | |
273 | asection *s; | |
274 | struct wildcard_list *sec; | |
b6bf44ba AM |
275 | |
276 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
4dec4d4e | 277 | { |
b6bf44ba | 278 | sec = ptr->section_list; |
2181f54f AM |
279 | if (sec == NULL) |
280 | (*callback) (ptr, sec, s, file, data); | |
281 | ||
282 | while (sec != NULL) | |
08da4cac | 283 | { |
b34976b6 | 284 | bfd_boolean skip = FALSE; |
2181f54f | 285 | |
72223188 | 286 | if (sec->spec.name != NULL) |
b6bf44ba | 287 | { |
2181f54f AM |
288 | const char *sname = bfd_get_section_name (file->the_bfd, s); |
289 | ||
97407faf | 290 | skip = name_match (sec->spec.name, sname) != 0; |
b6bf44ba | 291 | } |
4dec4d4e | 292 | |
b6bf44ba | 293 | if (!skip) |
72223188 | 294 | walk_wild_consider_section (ptr, file, s, sec, callback, data); |
4dec4d4e | 295 | |
2181f54f | 296 | sec = sec->next; |
4dec4d4e RH |
297 | } |
298 | } | |
299 | } | |
300 | ||
72223188 JJ |
301 | /* Routines to find a single section given its name. If there's more |
302 | than one section with that name, we report that. */ | |
303 | ||
304 | typedef struct | |
305 | { | |
306 | asection *found_section; | |
307 | bfd_boolean multiple_sections_found; | |
308 | } section_iterator_callback_data; | |
309 | ||
310 | static bfd_boolean | |
91d6fa6a | 311 | section_iterator_callback (bfd *abfd ATTRIBUTE_UNUSED, asection *s, void *data) |
72223188 | 312 | { |
1e9cc1c2 | 313 | section_iterator_callback_data *d = (section_iterator_callback_data *) data; |
72223188 JJ |
314 | |
315 | if (d->found_section != NULL) | |
316 | { | |
317 | d->multiple_sections_found = TRUE; | |
318 | return TRUE; | |
319 | } | |
320 | ||
321 | d->found_section = s; | |
322 | return FALSE; | |
323 | } | |
324 | ||
325 | static asection * | |
326 | find_section (lang_input_statement_type *file, | |
327 | struct wildcard_list *sec, | |
328 | bfd_boolean *multiple_sections_found) | |
329 | { | |
330 | section_iterator_callback_data cb_data = { NULL, FALSE }; | |
331 | ||
329c1c86 | 332 | bfd_get_section_by_name_if (file->the_bfd, sec->spec.name, |
72223188 JJ |
333 | section_iterator_callback, &cb_data); |
334 | *multiple_sections_found = cb_data.multiple_sections_found; | |
335 | return cb_data.found_section; | |
336 | } | |
337 | ||
338 | /* Code for handling simple wildcards without going through fnmatch, | |
339 | which can be expensive because of charset translations etc. */ | |
340 | ||
341 | /* A simple wild is a literal string followed by a single '*', | |
342 | where the literal part is at least 4 characters long. */ | |
343 | ||
344 | static bfd_boolean | |
345 | is_simple_wild (const char *name) | |
346 | { | |
347 | size_t len = strcspn (name, "*?["); | |
348 | return len >= 4 && name[len] == '*' && name[len + 1] == '\0'; | |
349 | } | |
350 | ||
351 | static bfd_boolean | |
352 | match_simple_wild (const char *pattern, const char *name) | |
353 | { | |
354 | /* The first four characters of the pattern are guaranteed valid | |
355 | non-wildcard characters. So we can go faster. */ | |
356 | if (pattern[0] != name[0] || pattern[1] != name[1] | |
357 | || pattern[2] != name[2] || pattern[3] != name[3]) | |
358 | return FALSE; | |
359 | ||
360 | pattern += 4; | |
361 | name += 4; | |
362 | while (*pattern != '*') | |
363 | if (*name++ != *pattern++) | |
364 | return FALSE; | |
365 | ||
366 | return TRUE; | |
367 | } | |
368 | ||
50c77e5d NC |
369 | /* Compare sections ASEC and BSEC according to SORT. */ |
370 | ||
371 | static int | |
372 | compare_section (sort_type sort, asection *asec, asection *bsec) | |
373 | { | |
374 | int ret; | |
375 | ||
376 | switch (sort) | |
377 | { | |
378 | default: | |
379 | abort (); | |
380 | ||
381 | case by_alignment_name: | |
382 | ret = (bfd_section_alignment (bsec->owner, bsec) | |
383 | - bfd_section_alignment (asec->owner, asec)); | |
384 | if (ret) | |
385 | break; | |
386 | /* Fall through. */ | |
387 | ||
388 | case by_name: | |
389 | ret = strcmp (bfd_get_section_name (asec->owner, asec), | |
390 | bfd_get_section_name (bsec->owner, bsec)); | |
391 | break; | |
392 | ||
393 | case by_name_alignment: | |
394 | ret = strcmp (bfd_get_section_name (asec->owner, asec), | |
395 | bfd_get_section_name (bsec->owner, bsec)); | |
396 | if (ret) | |
397 | break; | |
398 | /* Fall through. */ | |
399 | ||
400 | case by_alignment: | |
401 | ret = (bfd_section_alignment (bsec->owner, bsec) | |
402 | - bfd_section_alignment (asec->owner, asec)); | |
403 | break; | |
404 | } | |
405 | ||
406 | return ret; | |
407 | } | |
408 | ||
329c1c86 | 409 | /* Build a Binary Search Tree to sort sections, unlike insertion sort |
50c77e5d NC |
410 | used in wild_sort(). BST is considerably faster if the number of |
411 | of sections are large. */ | |
412 | ||
413 | static lang_section_bst_type ** | |
414 | wild_sort_fast (lang_wild_statement_type *wild, | |
329c1c86 AM |
415 | struct wildcard_list *sec, |
416 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
417 | asection *section) | |
50c77e5d | 418 | { |
329c1c86 | 419 | lang_section_bst_type **tree; |
50c77e5d | 420 | |
e6f2cbf5 | 421 | tree = &wild->tree; |
50c77e5d | 422 | if (!wild->filenames_sorted |
329c1c86 | 423 | && (sec == NULL || sec->spec.sorted == none)) |
50c77e5d NC |
424 | { |
425 | /* Append at the right end of tree. */ | |
426 | while (*tree) | |
329c1c86 | 427 | tree = &((*tree)->right); |
50c77e5d NC |
428 | return tree; |
429 | } | |
430 | ||
329c1c86 | 431 | while (*tree) |
50c77e5d NC |
432 | { |
433 | /* Find the correct node to append this section. */ | |
329c1c86 AM |
434 | if (compare_section (sec->spec.sorted, section, (*tree)->section) < 0) |
435 | tree = &((*tree)->left); | |
436 | else | |
437 | tree = &((*tree)->right); | |
50c77e5d NC |
438 | } |
439 | ||
440 | return tree; | |
441 | } | |
442 | ||
443 | /* Use wild_sort_fast to build a BST to sort sections. */ | |
444 | ||
445 | static void | |
446 | output_section_callback_fast (lang_wild_statement_type *ptr, | |
329c1c86 AM |
447 | struct wildcard_list *sec, |
448 | asection *section, | |
449 | lang_input_statement_type *file, | |
d0bf826b | 450 | void *output) |
50c77e5d NC |
451 | { |
452 | lang_section_bst_type *node; | |
453 | lang_section_bst_type **tree; | |
d0bf826b | 454 | lang_output_section_statement_type *os; |
50c77e5d | 455 | |
d0bf826b AM |
456 | os = (lang_output_section_statement_type *) output; |
457 | ||
458 | if (unique_section_p (section, os)) | |
50c77e5d NC |
459 | return; |
460 | ||
1e9cc1c2 | 461 | node = (lang_section_bst_type *) xmalloc (sizeof (lang_section_bst_type)); |
50c77e5d NC |
462 | node->left = 0; |
463 | node->right = 0; | |
464 | node->section = section; | |
465 | ||
466 | tree = wild_sort_fast (ptr, sec, file, section); | |
467 | if (tree != NULL) | |
468 | *tree = node; | |
469 | } | |
470 | ||
471 | /* Convert a sorted sections' BST back to list form. */ | |
472 | ||
473 | static void | |
329c1c86 AM |
474 | output_section_callback_tree_to_list (lang_wild_statement_type *ptr, |
475 | lang_section_bst_type *tree, | |
476 | void *output) | |
50c77e5d NC |
477 | { |
478 | if (tree->left) | |
479 | output_section_callback_tree_to_list (ptr, tree->left, output); | |
480 | ||
329c1c86 AM |
481 | lang_add_section (&ptr->children, tree->section, |
482 | (lang_output_section_statement_type *) output); | |
50c77e5d NC |
483 | |
484 | if (tree->right) | |
485 | output_section_callback_tree_to_list (ptr, tree->right, output); | |
486 | ||
487 | free (tree); | |
488 | } | |
489 | ||
72223188 JJ |
490 | /* Specialized, optimized routines for handling different kinds of |
491 | wildcards */ | |
492 | ||
493 | static void | |
494 | walk_wild_section_specs1_wild0 (lang_wild_statement_type *ptr, | |
495 | lang_input_statement_type *file, | |
496 | callback_t callback, | |
497 | void *data) | |
498 | { | |
499 | /* We can just do a hash lookup for the section with the right name. | |
500 | But if that lookup discovers more than one section with the name | |
501 | (should be rare), we fall back to the general algorithm because | |
502 | we would otherwise have to sort the sections to make sure they | |
503 | get processed in the bfd's order. */ | |
504 | bfd_boolean multiple_sections_found; | |
505 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
506 | asection *s0 = find_section (file, sec0, &multiple_sections_found); | |
507 | ||
508 | if (multiple_sections_found) | |
509 | walk_wild_section_general (ptr, file, callback, data); | |
510 | else if (s0) | |
511 | walk_wild_consider_section (ptr, file, s0, sec0, callback, data); | |
512 | } | |
513 | ||
514 | static void | |
515 | walk_wild_section_specs1_wild1 (lang_wild_statement_type *ptr, | |
516 | lang_input_statement_type *file, | |
517 | callback_t callback, | |
518 | void *data) | |
519 | { | |
520 | asection *s; | |
521 | struct wildcard_list *wildsec0 = ptr->handler_data[0]; | |
522 | ||
523 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
524 | { | |
525 | const char *sname = bfd_get_section_name (file->the_bfd, s); | |
526 | bfd_boolean skip = !match_simple_wild (wildsec0->spec.name, sname); | |
527 | ||
528 | if (!skip) | |
529 | walk_wild_consider_section (ptr, file, s, wildsec0, callback, data); | |
530 | } | |
531 | } | |
532 | ||
533 | static void | |
534 | walk_wild_section_specs2_wild1 (lang_wild_statement_type *ptr, | |
535 | lang_input_statement_type *file, | |
536 | callback_t callback, | |
537 | void *data) | |
538 | { | |
539 | asection *s; | |
540 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
541 | struct wildcard_list *wildsec1 = ptr->handler_data[1]; | |
542 | bfd_boolean multiple_sections_found; | |
543 | asection *s0 = find_section (file, sec0, &multiple_sections_found); | |
544 | ||
545 | if (multiple_sections_found) | |
546 | { | |
547 | walk_wild_section_general (ptr, file, callback, data); | |
548 | return; | |
549 | } | |
550 | ||
551 | /* Note that if the section was not found, s0 is NULL and | |
552 | we'll simply never succeed the s == s0 test below. */ | |
553 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
554 | { | |
555 | /* Recall that in this code path, a section cannot satisfy more | |
556 | than one spec, so if s == s0 then it cannot match | |
557 | wildspec1. */ | |
558 | if (s == s0) | |
559 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
560 | else | |
561 | { | |
562 | const char *sname = bfd_get_section_name (file->the_bfd, s); | |
563 | bfd_boolean skip = !match_simple_wild (wildsec1->spec.name, sname); | |
564 | ||
565 | if (!skip) | |
566 | walk_wild_consider_section (ptr, file, s, wildsec1, callback, | |
567 | data); | |
568 | } | |
569 | } | |
570 | } | |
571 | ||
572 | static void | |
573 | walk_wild_section_specs3_wild2 (lang_wild_statement_type *ptr, | |
574 | lang_input_statement_type *file, | |
575 | callback_t callback, | |
576 | void *data) | |
577 | { | |
578 | asection *s; | |
579 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
580 | struct wildcard_list *wildsec1 = ptr->handler_data[1]; | |
581 | struct wildcard_list *wildsec2 = ptr->handler_data[2]; | |
582 | bfd_boolean multiple_sections_found; | |
583 | asection *s0 = find_section (file, sec0, &multiple_sections_found); | |
584 | ||
585 | if (multiple_sections_found) | |
586 | { | |
587 | walk_wild_section_general (ptr, file, callback, data); | |
588 | return; | |
589 | } | |
590 | ||
591 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
592 | { | |
593 | if (s == s0) | |
594 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
595 | else | |
596 | { | |
597 | const char *sname = bfd_get_section_name (file->the_bfd, s); | |
598 | bfd_boolean skip = !match_simple_wild (wildsec1->spec.name, sname); | |
599 | ||
600 | if (!skip) | |
601 | walk_wild_consider_section (ptr, file, s, wildsec1, callback, data); | |
602 | else | |
603 | { | |
604 | skip = !match_simple_wild (wildsec2->spec.name, sname); | |
605 | if (!skip) | |
606 | walk_wild_consider_section (ptr, file, s, wildsec2, callback, | |
607 | data); | |
608 | } | |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | static void | |
614 | walk_wild_section_specs4_wild2 (lang_wild_statement_type *ptr, | |
615 | lang_input_statement_type *file, | |
616 | callback_t callback, | |
617 | void *data) | |
618 | { | |
619 | asection *s; | |
620 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
621 | struct wildcard_list *sec1 = ptr->handler_data[1]; | |
622 | struct wildcard_list *wildsec2 = ptr->handler_data[2]; | |
623 | struct wildcard_list *wildsec3 = ptr->handler_data[3]; | |
624 | bfd_boolean multiple_sections_found; | |
625 | asection *s0 = find_section (file, sec0, &multiple_sections_found), *s1; | |
626 | ||
627 | if (multiple_sections_found) | |
628 | { | |
629 | walk_wild_section_general (ptr, file, callback, data); | |
630 | return; | |
631 | } | |
632 | ||
633 | s1 = find_section (file, sec1, &multiple_sections_found); | |
634 | if (multiple_sections_found) | |
635 | { | |
636 | walk_wild_section_general (ptr, file, callback, data); | |
637 | return; | |
638 | } | |
639 | ||
640 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
641 | { | |
642 | if (s == s0) | |
643 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
644 | else | |
645 | if (s == s1) | |
646 | walk_wild_consider_section (ptr, file, s, sec1, callback, data); | |
647 | else | |
648 | { | |
649 | const char *sname = bfd_get_section_name (file->the_bfd, s); | |
650 | bfd_boolean skip = !match_simple_wild (wildsec2->spec.name, | |
651 | sname); | |
652 | ||
653 | if (!skip) | |
654 | walk_wild_consider_section (ptr, file, s, wildsec2, callback, | |
655 | data); | |
656 | else | |
657 | { | |
658 | skip = !match_simple_wild (wildsec3->spec.name, sname); | |
659 | if (!skip) | |
660 | walk_wild_consider_section (ptr, file, s, wildsec3, | |
661 | callback, data); | |
662 | } | |
663 | } | |
664 | } | |
665 | } | |
666 | ||
667 | static void | |
668 | walk_wild_section (lang_wild_statement_type *ptr, | |
669 | lang_input_statement_type *file, | |
670 | callback_t callback, | |
671 | void *data) | |
672 | { | |
673 | if (file->just_syms_flag) | |
674 | return; | |
675 | ||
676 | (*ptr->walk_wild_section_handler) (ptr, file, callback, data); | |
677 | } | |
678 | ||
679 | /* Returns TRUE when name1 is a wildcard spec that might match | |
680 | something name2 can match. We're conservative: we return FALSE | |
681 | only if the prefixes of name1 and name2 are different up to the | |
682 | first wildcard character. */ | |
683 | ||
684 | static bfd_boolean | |
685 | wild_spec_can_overlap (const char *name1, const char *name2) | |
686 | { | |
687 | size_t prefix1_len = strcspn (name1, "?*["); | |
688 | size_t prefix2_len = strcspn (name2, "?*["); | |
689 | size_t min_prefix_len; | |
690 | ||
691 | /* Note that if there is no wildcard character, then we treat the | |
692 | terminating 0 as part of the prefix. Thus ".text" won't match | |
693 | ".text." or ".text.*", for example. */ | |
694 | if (name1[prefix1_len] == '\0') | |
695 | prefix1_len++; | |
696 | if (name2[prefix2_len] == '\0') | |
697 | prefix2_len++; | |
698 | ||
699 | min_prefix_len = prefix1_len < prefix2_len ? prefix1_len : prefix2_len; | |
700 | ||
701 | return memcmp (name1, name2, min_prefix_len) == 0; | |
702 | } | |
703 | ||
704 | /* Select specialized code to handle various kinds of wildcard | |
705 | statements. */ | |
706 | ||
707 | static void | |
708 | analyze_walk_wild_section_handler (lang_wild_statement_type *ptr) | |
709 | { | |
710 | int sec_count = 0; | |
711 | int wild_name_count = 0; | |
712 | struct wildcard_list *sec; | |
713 | int signature; | |
714 | int data_counter; | |
715 | ||
716 | ptr->walk_wild_section_handler = walk_wild_section_general; | |
7544697a AM |
717 | ptr->handler_data[0] = NULL; |
718 | ptr->handler_data[1] = NULL; | |
719 | ptr->handler_data[2] = NULL; | |
720 | ptr->handler_data[3] = NULL; | |
e6f2cbf5 | 721 | ptr->tree = NULL; |
72223188 JJ |
722 | |
723 | /* Count how many wildcard_specs there are, and how many of those | |
724 | actually use wildcards in the name. Also, bail out if any of the | |
725 | wildcard names are NULL. (Can this actually happen? | |
726 | walk_wild_section used to test for it.) And bail out if any | |
727 | of the wildcards are more complex than a simple string | |
728 | ending in a single '*'. */ | |
729 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
730 | { | |
731 | ++sec_count; | |
732 | if (sec->spec.name == NULL) | |
733 | return; | |
734 | if (wildcardp (sec->spec.name)) | |
735 | { | |
736 | ++wild_name_count; | |
737 | if (!is_simple_wild (sec->spec.name)) | |
738 | return; | |
739 | } | |
740 | } | |
741 | ||
742 | /* The zero-spec case would be easy to optimize but it doesn't | |
743 | happen in practice. Likewise, more than 4 specs doesn't | |
744 | happen in practice. */ | |
745 | if (sec_count == 0 || sec_count > 4) | |
746 | return; | |
747 | ||
748 | /* Check that no two specs can match the same section. */ | |
749 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
750 | { | |
751 | struct wildcard_list *sec2; | |
752 | for (sec2 = sec->next; sec2 != NULL; sec2 = sec2->next) | |
753 | { | |
754 | if (wild_spec_can_overlap (sec->spec.name, sec2->spec.name)) | |
755 | return; | |
756 | } | |
757 | } | |
758 | ||
759 | signature = (sec_count << 8) + wild_name_count; | |
760 | switch (signature) | |
761 | { | |
762 | case 0x0100: | |
763 | ptr->walk_wild_section_handler = walk_wild_section_specs1_wild0; | |
764 | break; | |
765 | case 0x0101: | |
766 | ptr->walk_wild_section_handler = walk_wild_section_specs1_wild1; | |
767 | break; | |
768 | case 0x0201: | |
769 | ptr->walk_wild_section_handler = walk_wild_section_specs2_wild1; | |
770 | break; | |
771 | case 0x0302: | |
772 | ptr->walk_wild_section_handler = walk_wild_section_specs3_wild2; | |
773 | break; | |
774 | case 0x0402: | |
775 | ptr->walk_wild_section_handler = walk_wild_section_specs4_wild2; | |
776 | break; | |
777 | default: | |
778 | return; | |
779 | } | |
780 | ||
781 | /* Now fill the data array with pointers to the specs, first the | |
782 | specs with non-wildcard names, then the specs with wildcard | |
783 | names. It's OK to process the specs in different order from the | |
784 | given order, because we've already determined that no section | |
785 | will match more than one spec. */ | |
786 | data_counter = 0; | |
787 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
788 | if (!wildcardp (sec->spec.name)) | |
789 | ptr->handler_data[data_counter++] = sec; | |
790 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
791 | if (wildcardp (sec->spec.name)) | |
792 | ptr->handler_data[data_counter++] = sec; | |
793 | } | |
794 | ||
4dec4d4e RH |
795 | /* Handle a wild statement for a single file F. */ |
796 | ||
797 | static void | |
1579bae1 AM |
798 | walk_wild_file (lang_wild_statement_type *s, |
799 | lang_input_statement_type *f, | |
800 | callback_t callback, | |
801 | void *data) | |
4dec4d4e RH |
802 | { |
803 | if (f->the_bfd == NULL | |
804 | || ! bfd_check_format (f->the_bfd, bfd_archive)) | |
b6bf44ba | 805 | walk_wild_section (s, f, callback, data); |
4dec4d4e RH |
806 | else |
807 | { | |
808 | bfd *member; | |
809 | ||
810 | /* This is an archive file. We must map each member of the | |
811 | archive separately. */ | |
1579bae1 | 812 | member = bfd_openr_next_archived_file (f->the_bfd, NULL); |
4dec4d4e RH |
813 | while (member != NULL) |
814 | { | |
815 | /* When lookup_name is called, it will call the add_symbols | |
816 | entry point for the archive. For each element of the | |
817 | archive which is included, BFD will call ldlang_add_file, | |
818 | which will set the usrdata field of the member to the | |
819 | lang_input_statement. */ | |
820 | if (member->usrdata != NULL) | |
821 | { | |
1e9cc1c2 NC |
822 | walk_wild_section (s, |
823 | (lang_input_statement_type *) member->usrdata, | |
824 | callback, data); | |
4dec4d4e RH |
825 | } |
826 | ||
827 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
828 | } | |
829 | } | |
830 | } | |
831 | ||
832 | static void | |
1579bae1 | 833 | walk_wild (lang_wild_statement_type *s, callback_t callback, void *data) |
4dec4d4e | 834 | { |
b6bf44ba | 835 | const char *file_spec = s->filename; |
97407faf | 836 | char *p; |
b6bf44ba AM |
837 | |
838 | if (file_spec == NULL) | |
4dec4d4e RH |
839 | { |
840 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 841 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 842 | { |
b6bf44ba | 843 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
844 | } |
845 | } | |
97407faf AM |
846 | else if ((p = archive_path (file_spec)) != NULL) |
847 | { | |
848 | LANG_FOR_EACH_INPUT_STATEMENT (f) | |
849 | { | |
967928e9 AM |
850 | if (input_statement_is_archive_path (file_spec, p, f)) |
851 | walk_wild_file (s, f, callback, data); | |
97407faf AM |
852 | } |
853 | } | |
b6bf44ba | 854 | else if (wildcardp (file_spec)) |
4dec4d4e | 855 | { |
e50d8076 | 856 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 857 | { |
68bbb9f7 | 858 | if (fnmatch (file_spec, f->filename, 0) == 0) |
b6bf44ba | 859 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
860 | } |
861 | } | |
862 | else | |
863 | { | |
e50d8076 NC |
864 | lang_input_statement_type *f; |
865 | ||
4dec4d4e | 866 | /* Perform the iteration over a single file. */ |
b6bf44ba | 867 | f = lookup_name (file_spec); |
6770ec8c | 868 | if (f) |
b6bf44ba | 869 | walk_wild_file (s, f, callback, data); |
4dec4d4e | 870 | } |
5f992e62 AM |
871 | } |
872 | ||
08da4cac KH |
873 | /* lang_for_each_statement walks the parse tree and calls the provided |
874 | function for each node. */ | |
252b5132 RH |
875 | |
876 | static void | |
1579bae1 AM |
877 | lang_for_each_statement_worker (void (*func) (lang_statement_union_type *), |
878 | lang_statement_union_type *s) | |
252b5132 | 879 | { |
1579bae1 | 880 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
881 | { |
882 | func (s); | |
883 | ||
884 | switch (s->header.type) | |
885 | { | |
886 | case lang_constructors_statement_enum: | |
887 | lang_for_each_statement_worker (func, constructor_list.head); | |
888 | break; | |
889 | case lang_output_section_statement_enum: | |
890 | lang_for_each_statement_worker | |
6feb9908 | 891 | (func, s->output_section_statement.children.head); |
252b5132 RH |
892 | break; |
893 | case lang_wild_statement_enum: | |
6feb9908 AM |
894 | lang_for_each_statement_worker (func, |
895 | s->wild_statement.children.head); | |
252b5132 RH |
896 | break; |
897 | case lang_group_statement_enum: | |
898 | lang_for_each_statement_worker (func, | |
899 | s->group_statement.children.head); | |
900 | break; | |
901 | case lang_data_statement_enum: | |
902 | case lang_reloc_statement_enum: | |
903 | case lang_object_symbols_statement_enum: | |
904 | case lang_output_statement_enum: | |
905 | case lang_target_statement_enum: | |
906 | case lang_input_section_enum: | |
907 | case lang_input_statement_enum: | |
908 | case lang_assignment_statement_enum: | |
909 | case lang_padding_statement_enum: | |
910 | case lang_address_statement_enum: | |
911 | case lang_fill_statement_enum: | |
53d25da6 | 912 | case lang_insert_statement_enum: |
252b5132 RH |
913 | break; |
914 | default: | |
915 | FAIL (); | |
916 | break; | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
921 | void | |
1579bae1 | 922 | lang_for_each_statement (void (*func) (lang_statement_union_type *)) |
252b5132 | 923 | { |
08da4cac | 924 | lang_for_each_statement_worker (func, statement_list.head); |
252b5132 RH |
925 | } |
926 | ||
927 | /*----------------------------------------------------------------------*/ | |
08da4cac | 928 | |
252b5132 | 929 | void |
1579bae1 | 930 | lang_list_init (lang_statement_list_type *list) |
252b5132 | 931 | { |
1579bae1 | 932 | list->head = NULL; |
252b5132 RH |
933 | list->tail = &list->head; |
934 | } | |
935 | ||
bde18da4 AM |
936 | void |
937 | push_stat_ptr (lang_statement_list_type *new_ptr) | |
938 | { | |
939 | if (stat_save_ptr >= stat_save + sizeof (stat_save) / sizeof (stat_save[0])) | |
940 | abort (); | |
941 | *stat_save_ptr++ = stat_ptr; | |
942 | stat_ptr = new_ptr; | |
943 | } | |
944 | ||
945 | void | |
946 | pop_stat_ptr (void) | |
947 | { | |
948 | if (stat_save_ptr <= stat_save) | |
949 | abort (); | |
950 | stat_ptr = *--stat_save_ptr; | |
951 | } | |
952 | ||
08da4cac | 953 | /* Build a new statement node for the parse tree. */ |
252b5132 | 954 | |
08da4cac | 955 | static lang_statement_union_type * |
1579bae1 AM |
956 | new_statement (enum statement_enum type, |
957 | size_t size, | |
958 | lang_statement_list_type *list) | |
252b5132 | 959 | { |
d3ce72d0 | 960 | lang_statement_union_type *new_stmt; |
252b5132 | 961 | |
d3ce72d0 NC |
962 | new_stmt = (lang_statement_union_type *) stat_alloc (size); |
963 | new_stmt->header.type = type; | |
964 | new_stmt->header.next = NULL; | |
965 | lang_statement_append (list, new_stmt, &new_stmt->header.next); | |
966 | return new_stmt; | |
252b5132 RH |
967 | } |
968 | ||
08da4cac KH |
969 | /* Build a new input file node for the language. There are several |
970 | ways in which we treat an input file, eg, we only look at symbols, | |
971 | or prefix it with a -l etc. | |
252b5132 | 972 | |
08da4cac | 973 | We can be supplied with requests for input files more than once; |
396a2467 | 974 | they may, for example be split over several lines like foo.o(.text) |
d1778b88 | 975 | foo.o(.data) etc, so when asked for a file we check that we haven't |
08da4cac | 976 | got it already so we don't duplicate the bfd. */ |
252b5132 | 977 | |
252b5132 | 978 | static lang_input_statement_type * |
1579bae1 AM |
979 | new_afile (const char *name, |
980 | lang_input_file_enum_type file_type, | |
981 | const char *target, | |
982 | bfd_boolean add_to_list) | |
252b5132 RH |
983 | { |
984 | lang_input_statement_type *p; | |
985 | ||
986 | if (add_to_list) | |
d3ce72d0 | 987 | p = (lang_input_statement_type *) new_stat (lang_input_statement, stat_ptr); |
252b5132 RH |
988 | else |
989 | { | |
d3ce72d0 NC |
990 | p = (lang_input_statement_type *) |
991 | stat_alloc (sizeof (lang_input_statement_type)); | |
bd4d42c1 | 992 | p->header.type = lang_input_statement_enum; |
252b5132 RH |
993 | p->header.next = NULL; |
994 | } | |
995 | ||
b34976b6 | 996 | lang_has_input_file = TRUE; |
252b5132 | 997 | p->target = target; |
e3f2db7f | 998 | p->sysrooted = FALSE; |
bcb674cf RS |
999 | |
1000 | if (file_type == lang_input_file_is_l_enum | |
1001 | && name[0] == ':' && name[1] != '\0') | |
1002 | { | |
1003 | file_type = lang_input_file_is_search_file_enum; | |
1004 | name = name + 1; | |
1005 | } | |
1006 | ||
252b5132 RH |
1007 | switch (file_type) |
1008 | { | |
1009 | case lang_input_file_is_symbols_only_enum: | |
1010 | p->filename = name; | |
b34976b6 AM |
1011 | p->is_archive = FALSE; |
1012 | p->real = TRUE; | |
252b5132 | 1013 | p->local_sym_name = name; |
b34976b6 AM |
1014 | p->just_syms_flag = TRUE; |
1015 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
1016 | break; |
1017 | case lang_input_file_is_fake_enum: | |
1018 | p->filename = name; | |
b34976b6 AM |
1019 | p->is_archive = FALSE; |
1020 | p->real = FALSE; | |
252b5132 | 1021 | p->local_sym_name = name; |
b34976b6 AM |
1022 | p->just_syms_flag = FALSE; |
1023 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
1024 | break; |
1025 | case lang_input_file_is_l_enum: | |
b34976b6 | 1026 | p->is_archive = TRUE; |
252b5132 | 1027 | p->filename = name; |
b34976b6 | 1028 | p->real = TRUE; |
ff7a0acf | 1029 | p->local_sym_name = concat ("-l", name, (const char *) NULL); |
b34976b6 AM |
1030 | p->just_syms_flag = FALSE; |
1031 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
1032 | break; |
1033 | case lang_input_file_is_marker_enum: | |
1034 | p->filename = name; | |
b34976b6 AM |
1035 | p->is_archive = FALSE; |
1036 | p->real = FALSE; | |
252b5132 | 1037 | p->local_sym_name = name; |
b34976b6 AM |
1038 | p->just_syms_flag = FALSE; |
1039 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
1040 | break; |
1041 | case lang_input_file_is_search_file_enum: | |
e3f2db7f | 1042 | p->sysrooted = ldlang_sysrooted_script; |
252b5132 | 1043 | p->filename = name; |
b34976b6 AM |
1044 | p->is_archive = FALSE; |
1045 | p->real = TRUE; | |
252b5132 | 1046 | p->local_sym_name = name; |
b34976b6 AM |
1047 | p->just_syms_flag = FALSE; |
1048 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
1049 | break; |
1050 | case lang_input_file_is_file_enum: | |
1051 | p->filename = name; | |
b34976b6 AM |
1052 | p->is_archive = FALSE; |
1053 | p->real = TRUE; | |
252b5132 | 1054 | p->local_sym_name = name; |
b34976b6 AM |
1055 | p->just_syms_flag = FALSE; |
1056 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
1057 | break; |
1058 | default: | |
1059 | FAIL (); | |
1060 | } | |
1579bae1 | 1061 | p->the_bfd = NULL; |
1579bae1 AM |
1062 | p->next_real_file = NULL; |
1063 | p->next = NULL; | |
252b5132 | 1064 | p->dynamic = config.dynamic_link; |
ddbb8a31 NC |
1065 | p->add_DT_NEEDED_for_dynamic = add_DT_NEEDED_for_dynamic; |
1066 | p->add_DT_NEEDED_for_regular = add_DT_NEEDED_for_regular; | |
252b5132 | 1067 | p->whole_archive = whole_archive; |
b34976b6 | 1068 | p->loaded = FALSE; |
c4b78195 NC |
1069 | p->missing_file = FALSE; |
1070 | ||
252b5132 RH |
1071 | lang_statement_append (&input_file_chain, |
1072 | (lang_statement_union_type *) p, | |
1073 | &p->next_real_file); | |
1074 | return p; | |
1075 | } | |
1076 | ||
1077 | lang_input_statement_type * | |
1579bae1 AM |
1078 | lang_add_input_file (const char *name, |
1079 | lang_input_file_enum_type file_type, | |
1080 | const char *target) | |
252b5132 | 1081 | { |
b34976b6 | 1082 | return new_afile (name, file_type, target, TRUE); |
252b5132 RH |
1083 | } |
1084 | ||
409d7240 | 1085 | struct out_section_hash_entry |
750877ba L |
1086 | { |
1087 | struct bfd_hash_entry root; | |
409d7240 | 1088 | lang_statement_union_type s; |
750877ba L |
1089 | }; |
1090 | ||
1091 | /* The hash table. */ | |
1092 | ||
409d7240 | 1093 | static struct bfd_hash_table output_section_statement_table; |
750877ba | 1094 | |
384a9dda | 1095 | /* Support routines for the hash table used by lang_output_section_find, |
750877ba L |
1096 | initialize the table, fill in an entry and remove the table. */ |
1097 | ||
1098 | static struct bfd_hash_entry * | |
329c1c86 | 1099 | output_section_statement_newfunc (struct bfd_hash_entry *entry, |
409d7240 AM |
1100 | struct bfd_hash_table *table, |
1101 | const char *string) | |
750877ba | 1102 | { |
384a9dda | 1103 | lang_output_section_statement_type **nextp; |
409d7240 | 1104 | struct out_section_hash_entry *ret; |
384a9dda AM |
1105 | |
1106 | if (entry == NULL) | |
1107 | { | |
1e9cc1c2 NC |
1108 | entry = (struct bfd_hash_entry *) bfd_hash_allocate (table, |
1109 | sizeof (*ret)); | |
384a9dda AM |
1110 | if (entry == NULL) |
1111 | return entry; | |
1112 | } | |
1113 | ||
1114 | entry = bfd_hash_newfunc (entry, table, string); | |
1115 | if (entry == NULL) | |
1116 | return entry; | |
1117 | ||
409d7240 AM |
1118 | ret = (struct out_section_hash_entry *) entry; |
1119 | memset (&ret->s, 0, sizeof (ret->s)); | |
1120 | ret->s.header.type = lang_output_section_statement_enum; | |
1121 | ret->s.output_section_statement.subsection_alignment = -1; | |
1122 | ret->s.output_section_statement.section_alignment = -1; | |
1123 | ret->s.output_section_statement.block_value = 1; | |
1124 | lang_list_init (&ret->s.output_section_statement.children); | |
1125 | lang_statement_append (stat_ptr, &ret->s, &ret->s.header.next); | |
384a9dda | 1126 | |
218868ba AM |
1127 | /* For every output section statement added to the list, except the |
1128 | first one, lang_output_section_statement.tail points to the "next" | |
1129 | field of the last element of the list. */ | |
1130 | if (lang_output_section_statement.head != NULL) | |
409d7240 AM |
1131 | ret->s.output_section_statement.prev |
1132 | = ((lang_output_section_statement_type *) | |
1133 | ((char *) lang_output_section_statement.tail | |
1134 | - offsetof (lang_output_section_statement_type, next))); | |
218868ba | 1135 | |
384a9dda AM |
1136 | /* GCC's strict aliasing rules prevent us from just casting the |
1137 | address, so we store the pointer in a variable and cast that | |
1138 | instead. */ | |
409d7240 | 1139 | nextp = &ret->s.output_section_statement.next; |
384a9dda | 1140 | lang_statement_append (&lang_output_section_statement, |
409d7240 | 1141 | &ret->s, |
384a9dda AM |
1142 | (lang_statement_union_type **) nextp); |
1143 | return &ret->root; | |
750877ba L |
1144 | } |
1145 | ||
1146 | static void | |
409d7240 | 1147 | output_section_statement_table_init (void) |
750877ba | 1148 | { |
409d7240 AM |
1149 | if (!bfd_hash_table_init_n (&output_section_statement_table, |
1150 | output_section_statement_newfunc, | |
1151 | sizeof (struct out_section_hash_entry), | |
66eb6687 | 1152 | 61)) |
384a9dda | 1153 | einfo (_("%P%F: can not create hash table: %E\n")); |
750877ba L |
1154 | } |
1155 | ||
1156 | static void | |
409d7240 | 1157 | output_section_statement_table_free (void) |
750877ba | 1158 | { |
409d7240 | 1159 | bfd_hash_table_free (&output_section_statement_table); |
750877ba L |
1160 | } |
1161 | ||
08da4cac KH |
1162 | /* Build enough state so that the parser can build its tree. */ |
1163 | ||
252b5132 | 1164 | void |
1579bae1 | 1165 | lang_init (void) |
252b5132 RH |
1166 | { |
1167 | obstack_begin (&stat_obstack, 1000); | |
1168 | ||
1169 | stat_ptr = &statement_list; | |
1170 | ||
409d7240 | 1171 | output_section_statement_table_init (); |
750877ba | 1172 | |
252b5132 RH |
1173 | lang_list_init (stat_ptr); |
1174 | ||
1175 | lang_list_init (&input_file_chain); | |
1176 | lang_list_init (&lang_output_section_statement); | |
1177 | lang_list_init (&file_chain); | |
1579bae1 AM |
1178 | first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum, |
1179 | NULL); | |
08da4cac | 1180 | abs_output_section = |
66c103b7 | 1181 | lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME, 0, TRUE); |
252b5132 RH |
1182 | |
1183 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
420e579c HPN |
1184 | |
1185 | /* The value "3" is ad-hoc, somewhat related to the expected number of | |
1186 | DEFINED expressions in a linker script. For most default linker | |
1187 | scripts, there are none. Why a hash table then? Well, it's somewhat | |
1188 | simpler to re-use working machinery than using a linked list in terms | |
1189 | of code-complexity here in ld, besides the initialization which just | |
1190 | looks like other code here. */ | |
688c58f3 | 1191 | if (!bfd_hash_table_init_n (&lang_definedness_table, |
66eb6687 AM |
1192 | lang_definedness_newfunc, |
1193 | sizeof (struct lang_definedness_hash_entry), | |
1194 | 3)) | |
384a9dda | 1195 | einfo (_("%P%F: can not create hash table: %E\n")); |
252b5132 RH |
1196 | } |
1197 | ||
750877ba L |
1198 | void |
1199 | lang_finish (void) | |
1200 | { | |
409d7240 | 1201 | output_section_statement_table_free (); |
750877ba L |
1202 | } |
1203 | ||
252b5132 | 1204 | /*---------------------------------------------------------------------- |
08da4cac KH |
1205 | A region is an area of memory declared with the |
1206 | MEMORY { name:org=exp, len=exp ... } | |
1207 | syntax. | |
252b5132 | 1208 | |
08da4cac | 1209 | We maintain a list of all the regions here. |
252b5132 | 1210 | |
08da4cac | 1211 | If no regions are specified in the script, then the default is used |
a747ee4d NC |
1212 | which is created when looked up to be the entire data space. |
1213 | ||
1214 | If create is true we are creating a region inside a MEMORY block. | |
1215 | In this case it is probably an error to create a region that has | |
1216 | already been created. If we are not inside a MEMORY block it is | |
1217 | dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION) | |
4a93e180 NC |
1218 | and so we issue a warning. |
1219 | ||
1220 | Each region has at least one name. The first name is either | |
1221 | DEFAULT_MEMORY_REGION or the name given in the MEMORY block. You can add | |
1222 | alias names to an existing region within a script with | |
1223 | REGION_ALIAS (alias, region_name). Each name corresponds to at most one | |
1224 | region. */ | |
252b5132 RH |
1225 | |
1226 | static lang_memory_region_type *lang_memory_region_list; | |
6feb9908 AM |
1227 | static lang_memory_region_type **lang_memory_region_list_tail |
1228 | = &lang_memory_region_list; | |
252b5132 RH |
1229 | |
1230 | lang_memory_region_type * | |
a747ee4d | 1231 | lang_memory_region_lookup (const char *const name, bfd_boolean create) |
252b5132 | 1232 | { |
4a93e180 NC |
1233 | lang_memory_region_name *n; |
1234 | lang_memory_region_type *r; | |
d3ce72d0 | 1235 | lang_memory_region_type *new_region; |
252b5132 | 1236 | |
9f88b410 RS |
1237 | /* NAME is NULL for LMA memspecs if no region was specified. */ |
1238 | if (name == NULL) | |
1239 | return NULL; | |
1240 | ||
4a93e180 NC |
1241 | for (r = lang_memory_region_list; r != NULL; r = r->next) |
1242 | for (n = &r->name_list; n != NULL; n = n->next) | |
1243 | if (strcmp (n->name, name) == 0) | |
1244 | { | |
1245 | if (create) | |
1246 | einfo (_("%P:%S: warning: redeclaration of memory region `%s'\n"), | |
1247 | name); | |
1248 | return r; | |
1249 | } | |
252b5132 | 1250 | |
a747ee4d | 1251 | if (!create && strcmp (name, DEFAULT_MEMORY_REGION)) |
4a93e180 | 1252 | einfo (_("%P:%S: warning: memory region `%s' not declared\n"), name); |
a747ee4d | 1253 | |
d3ce72d0 NC |
1254 | new_region = (lang_memory_region_type *) |
1255 | stat_alloc (sizeof (lang_memory_region_type)); | |
252b5132 | 1256 | |
d3ce72d0 NC |
1257 | new_region->name_list.name = xstrdup (name); |
1258 | new_region->name_list.next = NULL; | |
1259 | new_region->next = NULL; | |
1260 | new_region->origin = 0; | |
1261 | new_region->length = ~(bfd_size_type) 0; | |
1262 | new_region->current = 0; | |
1263 | new_region->last_os = NULL; | |
1264 | new_region->flags = 0; | |
1265 | new_region->not_flags = 0; | |
1266 | new_region->had_full_message = FALSE; | |
252b5132 | 1267 | |
d3ce72d0 NC |
1268 | *lang_memory_region_list_tail = new_region; |
1269 | lang_memory_region_list_tail = &new_region->next; | |
66e28d60 | 1270 | |
d3ce72d0 | 1271 | return new_region; |
252b5132 RH |
1272 | } |
1273 | ||
4a93e180 NC |
1274 | void |
1275 | lang_memory_region_alias (const char * alias, const char * region_name) | |
1276 | { | |
1277 | lang_memory_region_name * n; | |
1278 | lang_memory_region_type * r; | |
1279 | lang_memory_region_type * region; | |
1280 | ||
1281 | /* The default region must be unique. This ensures that it is not necessary | |
1282 | to iterate through the name list if someone wants the check if a region is | |
1283 | the default memory region. */ | |
1284 | if (strcmp (region_name, DEFAULT_MEMORY_REGION) == 0 | |
1285 | || strcmp (alias, DEFAULT_MEMORY_REGION) == 0) | |
1286 | einfo (_("%F%P:%S: error: alias for default memory region\n")); | |
1287 | ||
1288 | /* Look for the target region and check if the alias is not already | |
1289 | in use. */ | |
1290 | region = NULL; | |
1291 | for (r = lang_memory_region_list; r != NULL; r = r->next) | |
1292 | for (n = &r->name_list; n != NULL; n = n->next) | |
1293 | { | |
1294 | if (region == NULL && strcmp (n->name, region_name) == 0) | |
1295 | region = r; | |
1296 | if (strcmp (n->name, alias) == 0) | |
1297 | einfo (_("%F%P:%S: error: redefinition of memory region " | |
1298 | "alias `%s'\n"), | |
1299 | alias); | |
1300 | } | |
1301 | ||
1302 | /* Check if the target region exists. */ | |
1303 | if (region == NULL) | |
1304 | einfo (_("%F%P:%S: error: memory region `%s' " | |
1305 | "for alias `%s' does not exist\n"), | |
1306 | region_name, | |
1307 | alias); | |
1308 | ||
1309 | /* Add alias to region name list. */ | |
1e9cc1c2 | 1310 | n = (lang_memory_region_name *) stat_alloc (sizeof (lang_memory_region_name)); |
4a93e180 NC |
1311 | n->name = xstrdup (alias); |
1312 | n->next = region->name_list.next; | |
1313 | region->name_list.next = n; | |
1314 | } | |
1315 | ||
5f992e62 | 1316 | static lang_memory_region_type * |
4a93e180 | 1317 | lang_memory_default (asection * section) |
252b5132 RH |
1318 | { |
1319 | lang_memory_region_type *p; | |
1320 | ||
1321 | flagword sec_flags = section->flags; | |
1322 | ||
1323 | /* Override SEC_DATA to mean a writable section. */ | |
1324 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
1325 | sec_flags |= SEC_DATA; | |
1326 | ||
1579bae1 | 1327 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
1328 | { |
1329 | if ((p->flags & sec_flags) != 0 | |
1330 | && (p->not_flags & sec_flags) == 0) | |
1331 | { | |
1332 | return p; | |
1333 | } | |
1334 | } | |
a747ee4d | 1335 | return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE); |
252b5132 RH |
1336 | } |
1337 | ||
d127ecce AM |
1338 | /* Find or create an output_section_statement with the given NAME. |
1339 | If CONSTRAINT is non-zero match one with that constraint, otherwise | |
1340 | match any non-negative constraint. If CREATE, always make a | |
1341 | new output_section_statement for SPECIAL CONSTRAINT. */ | |
1342 | ||
384a9dda | 1343 | lang_output_section_statement_type * |
d127ecce | 1344 | lang_output_section_statement_lookup (const char *name, |
66c103b7 AM |
1345 | int constraint, |
1346 | bfd_boolean create) | |
252b5132 | 1347 | { |
409d7240 | 1348 | struct out_section_hash_entry *entry; |
252b5132 | 1349 | |
409d7240 AM |
1350 | entry = ((struct out_section_hash_entry *) |
1351 | bfd_hash_lookup (&output_section_statement_table, name, | |
66c103b7 | 1352 | create, FALSE)); |
384a9dda AM |
1353 | if (entry == NULL) |
1354 | { | |
66c103b7 AM |
1355 | if (create) |
1356 | einfo (_("%P%F: failed creating section `%s': %E\n"), name); | |
384a9dda AM |
1357 | return NULL; |
1358 | } | |
252b5132 | 1359 | |
409d7240 | 1360 | if (entry->s.output_section_statement.name != NULL) |
252b5132 | 1361 | { |
384a9dda AM |
1362 | /* We have a section of this name, but it might not have the correct |
1363 | constraint. */ | |
66c103b7 | 1364 | struct out_section_hash_entry *last_ent; |
66c103b7 | 1365 | |
d127ecce | 1366 | name = entry->s.output_section_statement.name; |
8a99a385 AM |
1367 | if (create && constraint == SPECIAL) |
1368 | /* Not traversing to the end reverses the order of the second | |
1369 | and subsequent SPECIAL sections in the hash table chain, | |
1370 | but that shouldn't matter. */ | |
1371 | last_ent = entry; | |
1372 | else | |
1373 | do | |
1374 | { | |
d127ecce AM |
1375 | if (constraint == entry->s.output_section_statement.constraint |
1376 | || (constraint == 0 | |
1377 | && entry->s.output_section_statement.constraint >= 0)) | |
8a99a385 AM |
1378 | return &entry->s.output_section_statement; |
1379 | last_ent = entry; | |
1380 | entry = (struct out_section_hash_entry *) entry->root.next; | |
1381 | } | |
1382 | while (entry != NULL | |
d127ecce | 1383 | && name == entry->s.output_section_statement.name); |
252b5132 | 1384 | |
66c103b7 AM |
1385 | if (!create) |
1386 | return NULL; | |
1387 | ||
409d7240 AM |
1388 | entry |
1389 | = ((struct out_section_hash_entry *) | |
1390 | output_section_statement_newfunc (NULL, | |
1391 | &output_section_statement_table, | |
1392 | name)); | |
750877ba | 1393 | if (entry == NULL) |
384a9dda AM |
1394 | { |
1395 | einfo (_("%P%F: failed creating section `%s': %E\n"), name); | |
1396 | return NULL; | |
1397 | } | |
1398 | entry->root = last_ent->root; | |
1399 | last_ent->root.next = &entry->root; | |
252b5132 | 1400 | } |
384a9dda | 1401 | |
409d7240 AM |
1402 | entry->s.output_section_statement.name = name; |
1403 | entry->s.output_section_statement.constraint = constraint; | |
1404 | return &entry->s.output_section_statement; | |
252b5132 RH |
1405 | } |
1406 | ||
d127ecce AM |
1407 | /* Find the next output_section_statement with the same name as OS. |
1408 | If CONSTRAINT is non-zero, find one with that constraint otherwise | |
1409 | match any non-negative constraint. */ | |
1410 | ||
1411 | lang_output_section_statement_type * | |
1412 | next_matching_output_section_statement (lang_output_section_statement_type *os, | |
1413 | int constraint) | |
1414 | { | |
1415 | /* All output_section_statements are actually part of a | |
1416 | struct out_section_hash_entry. */ | |
1417 | struct out_section_hash_entry *entry = (struct out_section_hash_entry *) | |
1418 | ((char *) os | |
1419 | - offsetof (struct out_section_hash_entry, s.output_section_statement)); | |
1420 | const char *name = os->name; | |
1421 | ||
1422 | ASSERT (name == entry->root.string); | |
1423 | do | |
1424 | { | |
1425 | entry = (struct out_section_hash_entry *) entry->root.next; | |
1426 | if (entry == NULL | |
1427 | || name != entry->s.output_section_statement.name) | |
1428 | return NULL; | |
1429 | } | |
1430 | while (constraint != entry->s.output_section_statement.constraint | |
1431 | && (constraint != 0 | |
1432 | || entry->s.output_section_statement.constraint < 0)); | |
1433 | ||
1434 | return &entry->s.output_section_statement; | |
1435 | } | |
1436 | ||
afd7a018 AM |
1437 | /* A variant of lang_output_section_find used by place_orphan. |
1438 | Returns the output statement that should precede a new output | |
1439 | statement for SEC. If an exact match is found on certain flags, | |
1440 | sets *EXACT too. */ | |
1441 | ||
1442 | lang_output_section_statement_type * | |
1443 | lang_output_section_find_by_flags (const asection *sec, | |
390fbbf1 AM |
1444 | lang_output_section_statement_type **exact, |
1445 | lang_match_sec_type_func match_type) | |
afd7a018 AM |
1446 | { |
1447 | lang_output_section_statement_type *first, *look, *found; | |
1448 | flagword flags; | |
1449 | ||
1450 | /* We know the first statement on this list is *ABS*. May as well | |
1451 | skip it. */ | |
1452 | first = &lang_output_section_statement.head->output_section_statement; | |
1453 | first = first->next; | |
1454 | ||
1455 | /* First try for an exact match. */ | |
1456 | found = NULL; | |
1457 | for (look = first; look; look = look->next) | |
1458 | { | |
1459 | flags = look->flags; | |
1460 | if (look->bfd_section != NULL) | |
ecca9871 L |
1461 | { |
1462 | flags = look->bfd_section->flags; | |
f13a99db AM |
1463 | if (match_type && !match_type (link_info.output_bfd, |
1464 | look->bfd_section, | |
390fbbf1 | 1465 | sec->owner, sec)) |
ecca9871 L |
1466 | continue; |
1467 | } | |
afd7a018 AM |
1468 | flags ^= sec->flags; |
1469 | if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
1470 | | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
1471 | found = look; | |
1472 | } | |
1473 | if (found != NULL) | |
1474 | { | |
390fbbf1 AM |
1475 | if (exact != NULL) |
1476 | *exact = found; | |
afd7a018 AM |
1477 | return found; |
1478 | } | |
1479 | ||
07890c07 AM |
1480 | if ((sec->flags & SEC_CODE) != 0 |
1481 | && (sec->flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1482 | { |
1483 | /* Try for a rw code section. */ | |
1484 | for (look = first; look; look = look->next) | |
1485 | { | |
1486 | flags = look->flags; | |
1487 | if (look->bfd_section != NULL) | |
ecca9871 L |
1488 | { |
1489 | flags = look->bfd_section->flags; | |
f13a99db AM |
1490 | if (match_type && !match_type (link_info.output_bfd, |
1491 | look->bfd_section, | |
390fbbf1 | 1492 | sec->owner, sec)) |
ecca9871 L |
1493 | continue; |
1494 | } | |
afd7a018 AM |
1495 | flags ^= sec->flags; |
1496 | if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1497 | | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
1498 | found = look; | |
1499 | } | |
afd7a018 | 1500 | } |
07890c07 AM |
1501 | else if ((sec->flags & (SEC_READONLY | SEC_THREAD_LOCAL)) != 0 |
1502 | && (sec->flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1503 | { |
1504 | /* .rodata can go after .text, .sdata2 after .rodata. */ | |
1505 | for (look = first; look; look = look->next) | |
1506 | { | |
1507 | flags = look->flags; | |
1508 | if (look->bfd_section != NULL) | |
ecca9871 L |
1509 | { |
1510 | flags = look->bfd_section->flags; | |
f13a99db AM |
1511 | if (match_type && !match_type (link_info.output_bfd, |
1512 | look->bfd_section, | |
390fbbf1 | 1513 | sec->owner, sec)) |
ecca9871 L |
1514 | continue; |
1515 | } | |
afd7a018 AM |
1516 | flags ^= sec->flags; |
1517 | if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1518 | | SEC_READONLY)) | |
1519 | && !(look->flags & (SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
1520 | found = look; | |
1521 | } | |
afd7a018 | 1522 | } |
07890c07 AM |
1523 | else if ((sec->flags & SEC_SMALL_DATA) != 0 |
1524 | && (sec->flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1525 | { |
1526 | /* .sdata goes after .data, .sbss after .sdata. */ | |
1527 | for (look = first; look; look = look->next) | |
1528 | { | |
1529 | flags = look->flags; | |
1530 | if (look->bfd_section != NULL) | |
ecca9871 L |
1531 | { |
1532 | flags = look->bfd_section->flags; | |
f13a99db AM |
1533 | if (match_type && !match_type (link_info.output_bfd, |
1534 | look->bfd_section, | |
390fbbf1 | 1535 | sec->owner, sec)) |
ecca9871 L |
1536 | continue; |
1537 | } | |
afd7a018 AM |
1538 | flags ^= sec->flags; |
1539 | if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1540 | | SEC_THREAD_LOCAL)) | |
1541 | || ((look->flags & SEC_SMALL_DATA) | |
1542 | && !(sec->flags & SEC_HAS_CONTENTS))) | |
1543 | found = look; | |
1544 | } | |
afd7a018 | 1545 | } |
07890c07 AM |
1546 | else if ((sec->flags & SEC_HAS_CONTENTS) != 0 |
1547 | && (sec->flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1548 | { |
1549 | /* .data goes after .rodata. */ | |
1550 | for (look = first; look; look = look->next) | |
1551 | { | |
1552 | flags = look->flags; | |
1553 | if (look->bfd_section != NULL) | |
ecca9871 L |
1554 | { |
1555 | flags = look->bfd_section->flags; | |
f13a99db AM |
1556 | if (match_type && !match_type (link_info.output_bfd, |
1557 | look->bfd_section, | |
390fbbf1 | 1558 | sec->owner, sec)) |
ecca9871 L |
1559 | continue; |
1560 | } | |
afd7a018 AM |
1561 | flags ^= sec->flags; |
1562 | if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1563 | | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
1564 | found = look; | |
1565 | } | |
afd7a018 | 1566 | } |
07890c07 | 1567 | else if ((sec->flags & SEC_ALLOC) != 0) |
afd7a018 | 1568 | { |
07890c07 | 1569 | /* .bss goes after any other alloc section. */ |
390fbbf1 | 1570 | for (look = first; look; look = look->next) |
ecca9871 | 1571 | { |
390fbbf1 AM |
1572 | flags = look->flags; |
1573 | if (look->bfd_section != NULL) | |
1574 | { | |
1575 | flags = look->bfd_section->flags; | |
f13a99db AM |
1576 | if (match_type && !match_type (link_info.output_bfd, |
1577 | look->bfd_section, | |
390fbbf1 AM |
1578 | sec->owner, sec)) |
1579 | continue; | |
1580 | } | |
1581 | flags ^= sec->flags; | |
1582 | if (!(flags & SEC_ALLOC)) | |
1583 | found = look; | |
ecca9871 | 1584 | } |
afd7a018 | 1585 | } |
07890c07 AM |
1586 | else |
1587 | { | |
1588 | /* non-alloc go last. */ | |
1589 | for (look = first; look; look = look->next) | |
1590 | { | |
1591 | flags = look->flags; | |
1592 | if (look->bfd_section != NULL) | |
1593 | flags = look->bfd_section->flags; | |
1594 | flags ^= sec->flags; | |
1595 | if (!(flags & SEC_DEBUGGING)) | |
1596 | found = look; | |
1597 | } | |
1598 | return found; | |
1599 | } | |
afd7a018 | 1600 | |
390fbbf1 AM |
1601 | if (found || !match_type) |
1602 | return found; | |
1603 | ||
1604 | return lang_output_section_find_by_flags (sec, NULL, NULL); | |
afd7a018 AM |
1605 | } |
1606 | ||
1607 | /* Find the last output section before given output statement. | |
1608 | Used by place_orphan. */ | |
1609 | ||
1610 | static asection * | |
1611 | output_prev_sec_find (lang_output_section_statement_type *os) | |
1612 | { | |
afd7a018 AM |
1613 | lang_output_section_statement_type *lookup; |
1614 | ||
218868ba | 1615 | for (lookup = os->prev; lookup != NULL; lookup = lookup->prev) |
afd7a018 | 1616 | { |
66c103b7 | 1617 | if (lookup->constraint < 0) |
afd7a018 | 1618 | continue; |
afd7a018 AM |
1619 | |
1620 | if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL) | |
218868ba | 1621 | return lookup->bfd_section; |
afd7a018 AM |
1622 | } |
1623 | ||
1624 | return NULL; | |
1625 | } | |
1626 | ||
53d25da6 AM |
1627 | /* Look for a suitable place for a new output section statement. The |
1628 | idea is to skip over anything that might be inside a SECTIONS {} | |
1629 | statement in a script, before we find another output section | |
1630 | statement. Assignments to "dot" before an output section statement | |
0fa4d7cf AM |
1631 | are assumed to belong to it, except in two cases; The first |
1632 | assignment to dot, and assignments before non-alloc sections. | |
1633 | Otherwise we might put an orphan before . = . + SIZEOF_HEADERS or | |
1634 | similar assignments that set the initial address, or we might | |
1635 | insert non-alloc note sections among assignments setting end of | |
1636 | image symbols. */ | |
53d25da6 AM |
1637 | |
1638 | static lang_statement_union_type ** | |
1639 | insert_os_after (lang_output_section_statement_type *after) | |
1640 | { | |
1641 | lang_statement_union_type **where; | |
1642 | lang_statement_union_type **assign = NULL; | |
1643 | bfd_boolean ignore_first; | |
1644 | ||
1645 | ignore_first | |
1646 | = after == &lang_output_section_statement.head->output_section_statement; | |
1647 | ||
1648 | for (where = &after->header.next; | |
1649 | *where != NULL; | |
1650 | where = &(*where)->header.next) | |
1651 | { | |
1652 | switch ((*where)->header.type) | |
1653 | { | |
1654 | case lang_assignment_statement_enum: | |
1655 | if (assign == NULL) | |
1656 | { | |
1657 | lang_assignment_statement_type *ass; | |
1658 | ||
1659 | ass = &(*where)->assignment_statement; | |
1660 | if (ass->exp->type.node_class != etree_assert | |
1661 | && ass->exp->assign.dst[0] == '.' | |
1662 | && ass->exp->assign.dst[1] == 0 | |
1663 | && !ignore_first) | |
1664 | assign = where; | |
1665 | } | |
1666 | ignore_first = FALSE; | |
1667 | continue; | |
1668 | case lang_wild_statement_enum: | |
1669 | case lang_input_section_enum: | |
1670 | case lang_object_symbols_statement_enum: | |
1671 | case lang_fill_statement_enum: | |
1672 | case lang_data_statement_enum: | |
1673 | case lang_reloc_statement_enum: | |
1674 | case lang_padding_statement_enum: | |
1675 | case lang_constructors_statement_enum: | |
1676 | assign = NULL; | |
1677 | continue; | |
1678 | case lang_output_section_statement_enum: | |
1679 | if (assign != NULL) | |
0fa4d7cf AM |
1680 | { |
1681 | asection *s = (*where)->output_section_statement.bfd_section; | |
1682 | ||
249b2a84 L |
1683 | if (s == NULL |
1684 | || s->map_head.s == NULL | |
1685 | || (s->flags & SEC_ALLOC) != 0) | |
0fa4d7cf AM |
1686 | where = assign; |
1687 | } | |
53d25da6 AM |
1688 | break; |
1689 | case lang_input_statement_enum: | |
1690 | case lang_address_statement_enum: | |
1691 | case lang_target_statement_enum: | |
1692 | case lang_output_statement_enum: | |
1693 | case lang_group_statement_enum: | |
1694 | case lang_insert_statement_enum: | |
1695 | continue; | |
1696 | } | |
1697 | break; | |
1698 | } | |
1699 | ||
1700 | return where; | |
1701 | } | |
1702 | ||
afd7a018 | 1703 | lang_output_section_statement_type * |
7b986e99 | 1704 | lang_insert_orphan (asection *s, |
afd7a018 | 1705 | const char *secname, |
8a99a385 | 1706 | int constraint, |
afd7a018 AM |
1707 | lang_output_section_statement_type *after, |
1708 | struct orphan_save *place, | |
1709 | etree_type *address, | |
1710 | lang_statement_list_type *add_child) | |
1711 | { | |
afd7a018 AM |
1712 | lang_statement_list_type add; |
1713 | const char *ps; | |
afd7a018 AM |
1714 | lang_output_section_statement_type *os; |
1715 | lang_output_section_statement_type **os_tail; | |
1716 | ||
afd7a018 AM |
1717 | /* If we have found an appropriate place for the output section |
1718 | statements for this orphan, add them to our own private list, | |
1719 | inserting them later into the global statement list. */ | |
1720 | if (after != NULL) | |
1721 | { | |
bde18da4 AM |
1722 | lang_list_init (&add); |
1723 | push_stat_ptr (&add); | |
afd7a018 AM |
1724 | } |
1725 | ||
011aa75f AM |
1726 | if (link_info.relocatable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) |
1727 | address = exp_intop (0); | |
1728 | ||
1729 | os_tail = ((lang_output_section_statement_type **) | |
1730 | lang_output_section_statement.tail); | |
1e9cc1c2 NC |
1731 | os = lang_enter_output_section_statement (secname, address, normal_section, |
1732 | NULL, NULL, NULL, constraint); | |
011aa75f | 1733 | |
afd7a018 | 1734 | ps = NULL; |
011aa75f | 1735 | if (config.build_constructors && *os_tail == os) |
afd7a018 AM |
1736 | { |
1737 | /* If the name of the section is representable in C, then create | |
1738 | symbols to mark the start and the end of the section. */ | |
1739 | for (ps = secname; *ps != '\0'; ps++) | |
1740 | if (! ISALNUM ((unsigned char) *ps) && *ps != '_') | |
1741 | break; | |
1742 | if (*ps == '\0') | |
1743 | { | |
1744 | char *symname; | |
1745 | etree_type *e_align; | |
1746 | ||
1747 | symname = (char *) xmalloc (ps - secname + sizeof "__start_" + 1); | |
f13a99db | 1748 | symname[0] = bfd_get_symbol_leading_char (link_info.output_bfd); |
afd7a018 AM |
1749 | sprintf (symname + (symname[0] != 0), "__start_%s", secname); |
1750 | e_align = exp_unop (ALIGN_K, | |
1751 | exp_intop ((bfd_vma) 1 << s->alignment_power)); | |
1752 | lang_add_assignment (exp_assop ('=', ".", e_align)); | |
34711ca3 | 1753 | lang_add_assignment (exp_provide (symname, |
011aa75f AM |
1754 | exp_unop (ABSOLUTE, |
1755 | exp_nameop (NAME, ".")), | |
34711ca3 | 1756 | FALSE)); |
afd7a018 AM |
1757 | } |
1758 | } | |
1759 | ||
afd7a018 AM |
1760 | if (add_child == NULL) |
1761 | add_child = &os->children; | |
7b986e99 | 1762 | lang_add_section (add_child, s, os); |
afd7a018 | 1763 | |
f77c3948 DJ |
1764 | if (after && (s->flags & (SEC_LOAD | SEC_ALLOC)) != 0) |
1765 | { | |
1766 | const char *region = (after->region | |
1767 | ? after->region->name_list.name | |
1768 | : DEFAULT_MEMORY_REGION); | |
1769 | const char *lma_region = (after->lma_region | |
1770 | ? after->lma_region->name_list.name | |
1771 | : NULL); | |
1772 | lang_leave_output_section_statement (NULL, region, after->phdrs, | |
1773 | lma_region); | |
1774 | } | |
1775 | else | |
1776 | lang_leave_output_section_statement (NULL, DEFAULT_MEMORY_REGION, NULL, | |
1777 | NULL); | |
afd7a018 | 1778 | |
011aa75f | 1779 | if (ps != NULL && *ps == '\0') |
afd7a018 AM |
1780 | { |
1781 | char *symname; | |
1782 | ||
afd7a018 | 1783 | symname = (char *) xmalloc (ps - secname + sizeof "__stop_" + 1); |
f13a99db | 1784 | symname[0] = bfd_get_symbol_leading_char (link_info.output_bfd); |
afd7a018 | 1785 | sprintf (symname + (symname[0] != 0), "__stop_%s", secname); |
34711ca3 AM |
1786 | lang_add_assignment (exp_provide (symname, |
1787 | exp_nameop (NAME, "."), | |
1788 | FALSE)); | |
afd7a018 AM |
1789 | } |
1790 | ||
1791 | /* Restore the global list pointer. */ | |
1792 | if (after != NULL) | |
bde18da4 | 1793 | pop_stat_ptr (); |
afd7a018 AM |
1794 | |
1795 | if (after != NULL && os->bfd_section != NULL) | |
1796 | { | |
5daa8fe7 | 1797 | asection *snew, *as; |
afd7a018 AM |
1798 | |
1799 | snew = os->bfd_section; | |
1800 | ||
1801 | /* Shuffle the bfd section list to make the output file look | |
1802 | neater. This is really only cosmetic. */ | |
1803 | if (place->section == NULL | |
1804 | && after != (&lang_output_section_statement.head | |
1805 | ->output_section_statement)) | |
1806 | { | |
1807 | asection *bfd_section = after->bfd_section; | |
1808 | ||
1809 | /* If the output statement hasn't been used to place any input | |
1810 | sections (and thus doesn't have an output bfd_section), | |
1811 | look for the closest prior output statement having an | |
1812 | output section. */ | |
1813 | if (bfd_section == NULL) | |
1814 | bfd_section = output_prev_sec_find (after); | |
1815 | ||
1816 | if (bfd_section != NULL && bfd_section != snew) | |
1817 | place->section = &bfd_section->next; | |
1818 | } | |
1819 | ||
1820 | if (place->section == NULL) | |
f13a99db | 1821 | place->section = &link_info.output_bfd->sections; |
afd7a018 | 1822 | |
5daa8fe7 | 1823 | as = *place->section; |
5e542ba7 MS |
1824 | |
1825 | if (!as) | |
329c1c86 AM |
1826 | { |
1827 | /* Put the section at the end of the list. */ | |
5e542ba7 MS |
1828 | |
1829 | /* Unlink the section. */ | |
f13a99db | 1830 | bfd_section_list_remove (link_info.output_bfd, snew); |
5e542ba7 MS |
1831 | |
1832 | /* Now tack it back on in the right place. */ | |
f13a99db | 1833 | bfd_section_list_append (link_info.output_bfd, snew); |
329c1c86 | 1834 | } |
5e542ba7 | 1835 | else if (as != snew && as->prev != snew) |
5daa8fe7 L |
1836 | { |
1837 | /* Unlink the section. */ | |
f13a99db | 1838 | bfd_section_list_remove (link_info.output_bfd, snew); |
afd7a018 | 1839 | |
5daa8fe7 | 1840 | /* Now tack it back on in the right place. */ |
f13a99db | 1841 | bfd_section_list_insert_before (link_info.output_bfd, as, snew); |
5daa8fe7 | 1842 | } |
afd7a018 AM |
1843 | |
1844 | /* Save the end of this list. Further ophans of this type will | |
1845 | follow the one we've just added. */ | |
1846 | place->section = &snew->next; | |
1847 | ||
1848 | /* The following is non-cosmetic. We try to put the output | |
1849 | statements in some sort of reasonable order here, because they | |
1850 | determine the final load addresses of the orphan sections. | |
1851 | In addition, placing output statements in the wrong order may | |
1852 | require extra segments. For instance, given a typical | |
1853 | situation of all read-only sections placed in one segment and | |
1854 | following that a segment containing all the read-write | |
1855 | sections, we wouldn't want to place an orphan read/write | |
1856 | section before or amongst the read-only ones. */ | |
1857 | if (add.head != NULL) | |
1858 | { | |
1859 | lang_output_section_statement_type *newly_added_os; | |
1860 | ||
1861 | if (place->stmt == NULL) | |
1862 | { | |
53d25da6 | 1863 | lang_statement_union_type **where = insert_os_after (after); |
afd7a018 AM |
1864 | |
1865 | *add.tail = *where; | |
1866 | *where = add.head; | |
1867 | ||
1868 | place->os_tail = &after->next; | |
1869 | } | |
1870 | else | |
1871 | { | |
1872 | /* Put it after the last orphan statement we added. */ | |
1873 | *add.tail = *place->stmt; | |
1874 | *place->stmt = add.head; | |
1875 | } | |
1876 | ||
1877 | /* Fix the global list pointer if we happened to tack our | |
1878 | new list at the tail. */ | |
bde18da4 AM |
1879 | if (*stat_ptr->tail == add.head) |
1880 | stat_ptr->tail = add.tail; | |
afd7a018 AM |
1881 | |
1882 | /* Save the end of this list. */ | |
1883 | place->stmt = add.tail; | |
1884 | ||
1885 | /* Do the same for the list of output section statements. */ | |
1886 | newly_added_os = *os_tail; | |
1887 | *os_tail = NULL; | |
218868ba AM |
1888 | newly_added_os->prev = (lang_output_section_statement_type *) |
1889 | ((char *) place->os_tail | |
1890 | - offsetof (lang_output_section_statement_type, next)); | |
afd7a018 | 1891 | newly_added_os->next = *place->os_tail; |
218868ba AM |
1892 | if (newly_added_os->next != NULL) |
1893 | newly_added_os->next->prev = newly_added_os; | |
afd7a018 AM |
1894 | *place->os_tail = newly_added_os; |
1895 | place->os_tail = &newly_added_os->next; | |
1896 | ||
1897 | /* Fixing the global list pointer here is a little different. | |
1898 | We added to the list in lang_enter_output_section_statement, | |
1899 | trimmed off the new output_section_statment above when | |
1900 | assigning *os_tail = NULL, but possibly added it back in | |
1901 | the same place when assigning *place->os_tail. */ | |
1902 | if (*os_tail == NULL) | |
1903 | lang_output_section_statement.tail | |
1904 | = (lang_statement_union_type **) os_tail; | |
1905 | } | |
1906 | } | |
1907 | return os; | |
1908 | } | |
1909 | ||
252b5132 | 1910 | static void |
1579bae1 | 1911 | lang_map_flags (flagword flag) |
252b5132 RH |
1912 | { |
1913 | if (flag & SEC_ALLOC) | |
1914 | minfo ("a"); | |
1915 | ||
1916 | if (flag & SEC_CODE) | |
1917 | minfo ("x"); | |
1918 | ||
1919 | if (flag & SEC_READONLY) | |
1920 | minfo ("r"); | |
1921 | ||
1922 | if (flag & SEC_DATA) | |
1923 | minfo ("w"); | |
1924 | ||
1925 | if (flag & SEC_LOAD) | |
1926 | minfo ("l"); | |
1927 | } | |
1928 | ||
1929 | void | |
1579bae1 | 1930 | lang_map (void) |
252b5132 RH |
1931 | { |
1932 | lang_memory_region_type *m; | |
4d4920ec | 1933 | bfd_boolean dis_header_printed = FALSE; |
35835446 | 1934 | bfd *p; |
252b5132 | 1935 | |
4d4920ec EB |
1936 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
1937 | { | |
1938 | asection *s; | |
1939 | ||
1940 | if ((file->the_bfd->flags & (BFD_LINKER_CREATED | DYNAMIC)) != 0 | |
1941 | || file->just_syms_flag) | |
1942 | continue; | |
1943 | ||
1944 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
a14a5de3 | 1945 | if ((s->output_section == NULL |
f13a99db | 1946 | || s->output_section->owner != link_info.output_bfd) |
a14a5de3 | 1947 | && (s->flags & (SEC_LINKER_CREATED | SEC_KEEP)) == 0) |
4d4920ec EB |
1948 | { |
1949 | if (! dis_header_printed) | |
1950 | { | |
1951 | fprintf (config.map_file, _("\nDiscarded input sections\n\n")); | |
1952 | dis_header_printed = TRUE; | |
1953 | } | |
1954 | ||
d64703c6 | 1955 | print_input_section (s, TRUE); |
4d4920ec EB |
1956 | } |
1957 | } | |
1958 | ||
252b5132 RH |
1959 | minfo (_("\nMemory Configuration\n\n")); |
1960 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
1961 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
1962 | ||
1579bae1 | 1963 | for (m = lang_memory_region_list; m != NULL; m = m->next) |
252b5132 RH |
1964 | { |
1965 | char buf[100]; | |
1966 | int len; | |
1967 | ||
4a93e180 | 1968 | fprintf (config.map_file, "%-16s ", m->name_list.name); |
252b5132 RH |
1969 | |
1970 | sprintf_vma (buf, m->origin); | |
1971 | minfo ("0x%s ", buf); | |
1972 | len = strlen (buf); | |
1973 | while (len < 16) | |
1974 | { | |
1975 | print_space (); | |
1976 | ++len; | |
1977 | } | |
1978 | ||
1979 | minfo ("0x%V", m->length); | |
1980 | if (m->flags || m->not_flags) | |
1981 | { | |
1982 | #ifndef BFD64 | |
1983 | minfo (" "); | |
1984 | #endif | |
1985 | if (m->flags) | |
1986 | { | |
1987 | print_space (); | |
1988 | lang_map_flags (m->flags); | |
1989 | } | |
1990 | ||
1991 | if (m->not_flags) | |
1992 | { | |
1993 | minfo (" !"); | |
1994 | lang_map_flags (m->not_flags); | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | print_nl (); | |
1999 | } | |
2000 | ||
2001 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
2002 | ||
c0f00686 | 2003 | if (! link_info.reduce_memory_overheads) |
35835446 JR |
2004 | { |
2005 | obstack_begin (&map_obstack, 1000); | |
2006 | for (p = link_info.input_bfds; p != (bfd *) NULL; p = p->link_next) | |
2007 | bfd_map_over_sections (p, init_map_userdata, 0); | |
2008 | bfd_link_hash_traverse (link_info.hash, sort_def_symbol, 0); | |
2009 | } | |
a1438fce | 2010 | lang_statement_iteration ++; |
252b5132 RH |
2011 | print_statements (); |
2012 | } | |
2013 | ||
35835446 | 2014 | static void |
967928e9 AM |
2015 | init_map_userdata (bfd *abfd ATTRIBUTE_UNUSED, |
2016 | asection *sec, | |
2017 | void *data ATTRIBUTE_UNUSED) | |
35835446 JR |
2018 | { |
2019 | fat_section_userdata_type *new_data | |
2020 | = ((fat_section_userdata_type *) (stat_alloc | |
2021 | (sizeof (fat_section_userdata_type)))); | |
2022 | ||
2023 | ASSERT (get_userdata (sec) == NULL); | |
2024 | get_userdata (sec) = new_data; | |
2025 | new_data->map_symbol_def_tail = &new_data->map_symbol_def_head; | |
02688209 | 2026 | new_data->map_symbol_def_count = 0; |
35835446 JR |
2027 | } |
2028 | ||
2029 | static bfd_boolean | |
967928e9 AM |
2030 | sort_def_symbol (struct bfd_link_hash_entry *hash_entry, |
2031 | void *info ATTRIBUTE_UNUSED) | |
35835446 JR |
2032 | { |
2033 | if (hash_entry->type == bfd_link_hash_defined | |
2034 | || hash_entry->type == bfd_link_hash_defweak) | |
2035 | { | |
2036 | struct fat_user_section_struct *ud; | |
2037 | struct map_symbol_def *def; | |
2038 | ||
1e9cc1c2 NC |
2039 | ud = (struct fat_user_section_struct *) |
2040 | get_userdata (hash_entry->u.def.section); | |
35835446 JR |
2041 | if (! ud) |
2042 | { | |
2043 | /* ??? What do we have to do to initialize this beforehand? */ | |
2044 | /* The first time we get here is bfd_abs_section... */ | |
2045 | init_map_userdata (0, hash_entry->u.def.section, 0); | |
1e9cc1c2 NC |
2046 | ud = (struct fat_user_section_struct *) |
2047 | get_userdata (hash_entry->u.def.section); | |
35835446 JR |
2048 | } |
2049 | else if (!ud->map_symbol_def_tail) | |
2050 | ud->map_symbol_def_tail = &ud->map_symbol_def_head; | |
afd7a018 | 2051 | |
1e9cc1c2 | 2052 | def = (struct map_symbol_def *) obstack_alloc (&map_obstack, sizeof *def); |
35835446 | 2053 | def->entry = hash_entry; |
76d7af2d | 2054 | *(ud->map_symbol_def_tail) = def; |
35835446 | 2055 | ud->map_symbol_def_tail = &def->next; |
02688209 | 2056 | ud->map_symbol_def_count++; |
35835446 JR |
2057 | } |
2058 | return TRUE; | |
2059 | } | |
2060 | ||
252b5132 RH |
2061 | /* Initialize an output section. */ |
2062 | ||
2063 | static void | |
dfa7b0b8 | 2064 | init_os (lang_output_section_statement_type *s, flagword flags) |
252b5132 | 2065 | { |
252b5132 | 2066 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) |
6f9efd97 | 2067 | einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME); |
252b5132 | 2068 | |
8a99a385 AM |
2069 | if (s->constraint != SPECIAL) |
2070 | s->bfd_section = bfd_get_section_by_name (link_info.output_bfd, s->name); | |
1579bae1 | 2071 | if (s->bfd_section == NULL) |
8a99a385 AM |
2072 | s->bfd_section = bfd_make_section_anyway_with_flags (link_info.output_bfd, |
2073 | s->name, flags); | |
1579bae1 | 2074 | if (s->bfd_section == NULL) |
252b5132 RH |
2075 | { |
2076 | einfo (_("%P%F: output format %s cannot represent section called %s\n"), | |
f13a99db | 2077 | link_info.output_bfd->xvec->name, s->name); |
252b5132 RH |
2078 | } |
2079 | s->bfd_section->output_section = s->bfd_section; | |
252b5132 | 2080 | s->bfd_section->output_offset = 0; |
e0f6802f | 2081 | |
c0f00686 | 2082 | if (!link_info.reduce_memory_overheads) |
72223188 | 2083 | { |
d3ce72d0 NC |
2084 | fat_section_userdata_type *new_userdata = (fat_section_userdata_type *) |
2085 | stat_alloc (sizeof (fat_section_userdata_type)); | |
2086 | memset (new_userdata, 0, sizeof (fat_section_userdata_type)); | |
2087 | get_userdata (s->bfd_section) = new_userdata; | |
72223188 JJ |
2088 | } |
2089 | ||
a431bc2e AM |
2090 | /* If there is a base address, make sure that any sections it might |
2091 | mention are initialized. */ | |
2092 | if (s->addr_tree != NULL) | |
2093 | exp_init_os (s->addr_tree); | |
2094 | ||
2095 | if (s->load_base != NULL) | |
2096 | exp_init_os (s->load_base); | |
2097 | ||
7270c5ed AM |
2098 | /* If supplied an alignment, set it. */ |
2099 | if (s->section_alignment != -1) | |
2100 | s->bfd_section->alignment_power = s->section_alignment; | |
252b5132 RH |
2101 | } |
2102 | ||
2103 | /* Make sure that all output sections mentioned in an expression are | |
2104 | initialized. */ | |
2105 | ||
2106 | static void | |
1579bae1 | 2107 | exp_init_os (etree_type *exp) |
252b5132 RH |
2108 | { |
2109 | switch (exp->type.node_class) | |
2110 | { | |
2111 | case etree_assign: | |
9f4fb502 | 2112 | case etree_provide: |
252b5132 RH |
2113 | exp_init_os (exp->assign.src); |
2114 | break; | |
2115 | ||
2116 | case etree_binary: | |
2117 | exp_init_os (exp->binary.lhs); | |
2118 | exp_init_os (exp->binary.rhs); | |
2119 | break; | |
2120 | ||
2121 | case etree_trinary: | |
2122 | exp_init_os (exp->trinary.cond); | |
2123 | exp_init_os (exp->trinary.lhs); | |
2124 | exp_init_os (exp->trinary.rhs); | |
2125 | break; | |
2126 | ||
b6ca8815 NS |
2127 | case etree_assert: |
2128 | exp_init_os (exp->assert_s.child); | |
2129 | break; | |
afd7a018 | 2130 | |
252b5132 RH |
2131 | case etree_unary: |
2132 | exp_init_os (exp->unary.child); | |
2133 | break; | |
2134 | ||
2135 | case etree_name: | |
2136 | switch (exp->type.node_code) | |
2137 | { | |
2138 | case ADDR: | |
2139 | case LOADADDR: | |
2140 | case SIZEOF: | |
2141 | { | |
2142 | lang_output_section_statement_type *os; | |
2143 | ||
2144 | os = lang_output_section_find (exp->name.name); | |
2145 | if (os != NULL && os->bfd_section == NULL) | |
dfa7b0b8 | 2146 | init_os (os, 0); |
252b5132 RH |
2147 | } |
2148 | } | |
2149 | break; | |
2150 | ||
2151 | default: | |
2152 | break; | |
2153 | } | |
2154 | } | |
9503fd87 | 2155 | \f |
252b5132 | 2156 | static void |
1579bae1 | 2157 | section_already_linked (bfd *abfd, asection *sec, void *data) |
252b5132 | 2158 | { |
1e9cc1c2 | 2159 | lang_input_statement_type *entry = (lang_input_statement_type *) data; |
252b5132 RH |
2160 | |
2161 | /* If we are only reading symbols from this object, then we want to | |
2162 | discard all sections. */ | |
2163 | if (entry->just_syms_flag) | |
2164 | { | |
1449d79b | 2165 | bfd_link_just_syms (abfd, sec, &link_info); |
252b5132 RH |
2166 | return; |
2167 | } | |
2168 | ||
ace66bb2 | 2169 | if (!(abfd->flags & DYNAMIC)) |
c0f00686 | 2170 | bfd_section_already_linked (abfd, sec, &link_info); |
252b5132 RH |
2171 | } |
2172 | \f | |
2173 | /* The wild routines. | |
2174 | ||
2175 | These expand statements like *(.text) and foo.o to a list of | |
2176 | explicit actions, like foo.o(.text), bar.o(.text) and | |
2177 | foo.o(.text, .data). */ | |
2178 | ||
252b5132 RH |
2179 | /* Add SECTION to the output section OUTPUT. Do this by creating a |
2180 | lang_input_section statement which is placed at PTR. FILE is the | |
2181 | input file which holds SECTION. */ | |
2182 | ||
2183 | void | |
1579bae1 AM |
2184 | lang_add_section (lang_statement_list_type *ptr, |
2185 | asection *section, | |
7b986e99 | 2186 | lang_output_section_statement_type *output) |
252b5132 | 2187 | { |
164e712d | 2188 | flagword flags = section->flags; |
b34976b6 | 2189 | bfd_boolean discard; |
dfa7b0b8 | 2190 | lang_input_section_type *new_section; |
252b5132 | 2191 | |
e49f5022 | 2192 | /* Discard sections marked with SEC_EXCLUDE. */ |
b3096250 | 2193 | discard = (flags & SEC_EXCLUDE) != 0; |
252b5132 RH |
2194 | |
2195 | /* Discard input sections which are assigned to a section named | |
2196 | DISCARD_SECTION_NAME. */ | |
2197 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
b34976b6 | 2198 | discard = TRUE; |
252b5132 RH |
2199 | |
2200 | /* Discard debugging sections if we are stripping debugging | |
2201 | information. */ | |
2202 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
2203 | && (flags & SEC_DEBUGGING) != 0) | |
b34976b6 | 2204 | discard = TRUE; |
252b5132 RH |
2205 | |
2206 | if (discard) | |
2207 | { | |
2208 | if (section->output_section == NULL) | |
2209 | { | |
2210 | /* This prevents future calls from assigning this section. */ | |
2211 | section->output_section = bfd_abs_section_ptr; | |
2212 | } | |
2213 | return; | |
2214 | } | |
2215 | ||
dfa7b0b8 AM |
2216 | if (section->output_section != NULL) |
2217 | return; | |
252b5132 | 2218 | |
dfa7b0b8 AM |
2219 | /* We don't copy the SEC_NEVER_LOAD flag from an input section |
2220 | to an output section, because we want to be able to include a | |
2221 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
2222 | section (I don't know why we want to do this, but we do). | |
2223 | build_link_order in ldwrite.c handles this case by turning | |
2224 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
2225 | flags &= ~ SEC_NEVER_LOAD; | |
8423293d | 2226 | |
dfa7b0b8 AM |
2227 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've |
2228 | already been processed. One reason to do this is that on pe | |
2229 | format targets, .text$foo sections go into .text and it's odd | |
2230 | to see .text with SEC_LINK_ONCE set. */ | |
252b5132 | 2231 | |
dfa7b0b8 AM |
2232 | if (!link_info.relocatable) |
2233 | flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); | |
252b5132 | 2234 | |
dfa7b0b8 AM |
2235 | switch (output->sectype) |
2236 | { | |
2237 | case normal_section: | |
2238 | case overlay_section: | |
2239 | break; | |
2240 | case noalloc_section: | |
2241 | flags &= ~SEC_ALLOC; | |
2242 | break; | |
2243 | case noload_section: | |
2244 | flags &= ~SEC_LOAD; | |
2245 | flags |= SEC_NEVER_LOAD; | |
2246 | break; | |
2247 | } | |
252b5132 | 2248 | |
dfa7b0b8 AM |
2249 | if (output->bfd_section == NULL) |
2250 | init_os (output, flags); | |
252b5132 | 2251 | |
dfa7b0b8 AM |
2252 | /* If SEC_READONLY is not set in the input section, then clear |
2253 | it from the output section. */ | |
2254 | output->bfd_section->flags &= flags | ~SEC_READONLY; | |
252b5132 | 2255 | |
dfa7b0b8 AM |
2256 | if (output->bfd_section->linker_has_input) |
2257 | { | |
2258 | /* Only set SEC_READONLY flag on the first input section. */ | |
2259 | flags &= ~ SEC_READONLY; | |
252b5132 | 2260 | |
f5fa8ca2 | 2261 | /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */ |
dfa7b0b8 AM |
2262 | if ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS)) |
2263 | != (flags & (SEC_MERGE | SEC_STRINGS)) | |
2264 | || ((flags & SEC_MERGE) != 0 | |
2265 | && output->bfd_section->entsize != section->entsize)) | |
f5fa8ca2 | 2266 | { |
afd7a018 | 2267 | output->bfd_section->flags &= ~ (SEC_MERGE | SEC_STRINGS); |
f5fa8ca2 JJ |
2268 | flags &= ~ (SEC_MERGE | SEC_STRINGS); |
2269 | } | |
dfa7b0b8 AM |
2270 | } |
2271 | output->bfd_section->flags |= flags; | |
f5fa8ca2 | 2272 | |
dfa7b0b8 AM |
2273 | if (!output->bfd_section->linker_has_input) |
2274 | { | |
2275 | output->bfd_section->linker_has_input = 1; | |
2276 | /* This must happen after flags have been updated. The output | |
2277 | section may have been created before we saw its first input | |
2278 | section, eg. for a data statement. */ | |
2279 | bfd_init_private_section_data (section->owner, section, | |
2280 | link_info.output_bfd, | |
2281 | output->bfd_section, | |
2282 | &link_info); | |
2283 | if ((flags & SEC_MERGE) != 0) | |
afd7a018 | 2284 | output->bfd_section->entsize = section->entsize; |
dfa7b0b8 | 2285 | } |
f5fa8ca2 | 2286 | |
dfa7b0b8 AM |
2287 | if ((flags & SEC_TIC54X_BLOCK) != 0 |
2288 | && bfd_get_arch (section->owner) == bfd_arch_tic54x) | |
2289 | { | |
2290 | /* FIXME: This value should really be obtained from the bfd... */ | |
2291 | output->block_value = 128; | |
2292 | } | |
252b5132 | 2293 | |
dfa7b0b8 AM |
2294 | if (section->alignment_power > output->bfd_section->alignment_power) |
2295 | output->bfd_section->alignment_power = section->alignment_power; | |
9e41f973 | 2296 | |
dfa7b0b8 | 2297 | section->output_section = output->bfd_section; |
252b5132 | 2298 | |
dfa7b0b8 AM |
2299 | if (!link_info.relocatable |
2300 | && !stripped_excluded_sections) | |
2301 | { | |
2302 | asection *s = output->bfd_section->map_tail.s; | |
2303 | output->bfd_section->map_tail.s = section; | |
2304 | section->map_head.s = NULL; | |
2305 | section->map_tail.s = s; | |
2306 | if (s != NULL) | |
2307 | s->map_head.s = section; | |
2308 | else | |
2309 | output->bfd_section->map_head.s = section; | |
252b5132 | 2310 | } |
dfa7b0b8 AM |
2311 | |
2312 | /* Add a section reference to the list. */ | |
2313 | new_section = new_stat (lang_input_section, ptr); | |
2314 | new_section->section = section; | |
252b5132 RH |
2315 | } |
2316 | ||
2317 | /* Handle wildcard sorting. This returns the lang_input_section which | |
2318 | should follow the one we are going to create for SECTION and FILE, | |
2319 | based on the sorting requirements of WILD. It returns NULL if the | |
2320 | new section should just go at the end of the current list. */ | |
2321 | ||
2322 | static lang_statement_union_type * | |
1579bae1 AM |
2323 | wild_sort (lang_wild_statement_type *wild, |
2324 | struct wildcard_list *sec, | |
2325 | lang_input_statement_type *file, | |
2326 | asection *section) | |
252b5132 | 2327 | { |
252b5132 RH |
2328 | lang_statement_union_type *l; |
2329 | ||
bcaa7b3e L |
2330 | if (!wild->filenames_sorted |
2331 | && (sec == NULL || sec->spec.sorted == none)) | |
252b5132 RH |
2332 | return NULL; |
2333 | ||
bba1a0c0 | 2334 | for (l = wild->children.head; l != NULL; l = l->header.next) |
252b5132 RH |
2335 | { |
2336 | lang_input_section_type *ls; | |
2337 | ||
2338 | if (l->header.type != lang_input_section_enum) | |
2339 | continue; | |
2340 | ls = &l->input_section; | |
2341 | ||
2342 | /* Sorting by filename takes precedence over sorting by section | |
afd7a018 | 2343 | name. */ |
252b5132 RH |
2344 | |
2345 | if (wild->filenames_sorted) | |
2346 | { | |
2347 | const char *fn, *ln; | |
b34976b6 | 2348 | bfd_boolean fa, la; |
252b5132 RH |
2349 | int i; |
2350 | ||
2351 | /* The PE support for the .idata section as generated by | |
afd7a018 AM |
2352 | dlltool assumes that files will be sorted by the name of |
2353 | the archive and then the name of the file within the | |
2354 | archive. */ | |
252b5132 RH |
2355 | |
2356 | if (file->the_bfd != NULL | |
2357 | && bfd_my_archive (file->the_bfd) != NULL) | |
2358 | { | |
2359 | fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); | |
b34976b6 | 2360 | fa = TRUE; |
252b5132 RH |
2361 | } |
2362 | else | |
2363 | { | |
2364 | fn = file->filename; | |
b34976b6 | 2365 | fa = FALSE; |
252b5132 RH |
2366 | } |
2367 | ||
7b986e99 | 2368 | if (bfd_my_archive (ls->section->owner) != NULL) |
252b5132 | 2369 | { |
7b986e99 | 2370 | ln = bfd_get_filename (bfd_my_archive (ls->section->owner)); |
b34976b6 | 2371 | la = TRUE; |
252b5132 RH |
2372 | } |
2373 | else | |
2374 | { | |
7b986e99 | 2375 | ln = ls->section->owner->filename; |
b34976b6 | 2376 | la = FALSE; |
252b5132 RH |
2377 | } |
2378 | ||
2379 | i = strcmp (fn, ln); | |
2380 | if (i > 0) | |
2381 | continue; | |
2382 | else if (i < 0) | |
2383 | break; | |
2384 | ||
2385 | if (fa || la) | |
2386 | { | |
2387 | if (fa) | |
2388 | fn = file->filename; | |
2389 | if (la) | |
7b986e99 | 2390 | ln = ls->section->owner->filename; |
252b5132 RH |
2391 | |
2392 | i = strcmp (fn, ln); | |
2393 | if (i > 0) | |
2394 | continue; | |
2395 | else if (i < 0) | |
2396 | break; | |
2397 | } | |
2398 | } | |
2399 | ||
2400 | /* Here either the files are not sorted by name, or we are | |
afd7a018 | 2401 | looking at the sections for this file. */ |
252b5132 | 2402 | |
bcaa7b3e | 2403 | if (sec != NULL && sec->spec.sorted != none) |
32124d5b AM |
2404 | if (compare_section (sec->spec.sorted, section, ls->section) < 0) |
2405 | break; | |
252b5132 RH |
2406 | } |
2407 | ||
2408 | return l; | |
2409 | } | |
2410 | ||
2411 | /* Expand a wild statement for a particular FILE. SECTION may be | |
2412 | NULL, in which case it is a wild card. */ | |
2413 | ||
2414 | static void | |
1579bae1 AM |
2415 | output_section_callback (lang_wild_statement_type *ptr, |
2416 | struct wildcard_list *sec, | |
2417 | asection *section, | |
2418 | lang_input_statement_type *file, | |
2419 | void *output) | |
4dec4d4e RH |
2420 | { |
2421 | lang_statement_union_type *before; | |
d0bf826b AM |
2422 | lang_output_section_statement_type *os; |
2423 | ||
2424 | os = (lang_output_section_statement_type *) output; | |
5f992e62 | 2425 | |
b6bf44ba | 2426 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
d0bf826b | 2427 | if (unique_section_p (section, os)) |
b6bf44ba AM |
2428 | return; |
2429 | ||
b6bf44ba | 2430 | before = wild_sort (ptr, sec, file, section); |
5f992e62 | 2431 | |
4dec4d4e RH |
2432 | /* Here BEFORE points to the lang_input_section which |
2433 | should follow the one we are about to add. If BEFORE | |
2434 | is NULL, then the section should just go at the end | |
2435 | of the current list. */ | |
5f992e62 | 2436 | |
4dec4d4e | 2437 | if (before == NULL) |
d0bf826b | 2438 | lang_add_section (&ptr->children, section, os); |
4dec4d4e | 2439 | else |
252b5132 | 2440 | { |
4dec4d4e RH |
2441 | lang_statement_list_type list; |
2442 | lang_statement_union_type **pp; | |
5f992e62 | 2443 | |
4dec4d4e | 2444 | lang_list_init (&list); |
d0bf826b | 2445 | lang_add_section (&list, section, os); |
5f992e62 | 2446 | |
4dec4d4e RH |
2447 | /* If we are discarding the section, LIST.HEAD will |
2448 | be NULL. */ | |
2449 | if (list.head != NULL) | |
252b5132 | 2450 | { |
bba1a0c0 | 2451 | ASSERT (list.head->header.next == NULL); |
5f992e62 | 2452 | |
4dec4d4e RH |
2453 | for (pp = &ptr->children.head; |
2454 | *pp != before; | |
bba1a0c0 | 2455 | pp = &(*pp)->header.next) |
4dec4d4e | 2456 | ASSERT (*pp != NULL); |
5f992e62 | 2457 | |
bba1a0c0 | 2458 | list.head->header.next = *pp; |
4dec4d4e | 2459 | *pp = list.head; |
252b5132 RH |
2460 | } |
2461 | } | |
2462 | } | |
2463 | ||
0841712e JJ |
2464 | /* Check if all sections in a wild statement for a particular FILE |
2465 | are readonly. */ | |
2466 | ||
2467 | static void | |
2468 | check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED, | |
2469 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
2470 | asection *section, | |
2471 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
d0bf826b | 2472 | void *output) |
0841712e | 2473 | { |
d0bf826b AM |
2474 | lang_output_section_statement_type *os; |
2475 | ||
2476 | os = (lang_output_section_statement_type *) output; | |
2477 | ||
0841712e | 2478 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
d0bf826b | 2479 | if (unique_section_p (section, os)) |
0841712e JJ |
2480 | return; |
2481 | ||
6feb9908 | 2482 | if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0) |
d0bf826b | 2483 | os->all_input_readonly = FALSE; |
0841712e JJ |
2484 | } |
2485 | ||
252b5132 RH |
2486 | /* This is passed a file name which must have been seen already and |
2487 | added to the statement tree. We will see if it has been opened | |
2488 | already and had its symbols read. If not then we'll read it. */ | |
2489 | ||
2490 | static lang_input_statement_type * | |
1579bae1 | 2491 | lookup_name (const char *name) |
252b5132 RH |
2492 | { |
2493 | lang_input_statement_type *search; | |
2494 | ||
2495 | for (search = (lang_input_statement_type *) input_file_chain.head; | |
1579bae1 | 2496 | search != NULL; |
252b5132 RH |
2497 | search = (lang_input_statement_type *) search->next_real_file) |
2498 | { | |
0013291d NC |
2499 | /* Use the local_sym_name as the name of the file that has |
2500 | already been loaded as filename might have been transformed | |
2501 | via the search directory lookup mechanism. */ | |
87aa7f19 | 2502 | const char *filename = search->local_sym_name; |
0013291d | 2503 | |
0013291d | 2504 | if (filename != NULL |
0013291d | 2505 | && strcmp (filename, name) == 0) |
252b5132 RH |
2506 | break; |
2507 | } | |
2508 | ||
1579bae1 | 2509 | if (search == NULL) |
6feb9908 AM |
2510 | search = new_afile (name, lang_input_file_is_search_file_enum, |
2511 | default_target, FALSE); | |
252b5132 RH |
2512 | |
2513 | /* If we have already added this file, or this file is not real | |
87aa7f19 AM |
2514 | don't add this file. */ |
2515 | if (search->loaded || !search->real) | |
252b5132 RH |
2516 | return search; |
2517 | ||
1579bae1 | 2518 | if (! load_symbols (search, NULL)) |
6770ec8c | 2519 | return NULL; |
252b5132 RH |
2520 | |
2521 | return search; | |
2522 | } | |
2523 | ||
b58f81ae DJ |
2524 | /* Save LIST as a list of libraries whose symbols should not be exported. */ |
2525 | ||
2526 | struct excluded_lib | |
2527 | { | |
2528 | char *name; | |
2529 | struct excluded_lib *next; | |
2530 | }; | |
2531 | static struct excluded_lib *excluded_libs; | |
2532 | ||
2533 | void | |
2534 | add_excluded_libs (const char *list) | |
2535 | { | |
2536 | const char *p = list, *end; | |
2537 | ||
2538 | while (*p != '\0') | |
2539 | { | |
2540 | struct excluded_lib *entry; | |
2541 | end = strpbrk (p, ",:"); | |
2542 | if (end == NULL) | |
2543 | end = p + strlen (p); | |
1e9cc1c2 | 2544 | entry = (struct excluded_lib *) xmalloc (sizeof (*entry)); |
b58f81ae | 2545 | entry->next = excluded_libs; |
1e9cc1c2 | 2546 | entry->name = (char *) xmalloc (end - p + 1); |
b58f81ae DJ |
2547 | memcpy (entry->name, p, end - p); |
2548 | entry->name[end - p] = '\0'; | |
2549 | excluded_libs = entry; | |
2550 | if (*end == '\0') | |
329c1c86 | 2551 | break; |
b58f81ae DJ |
2552 | p = end + 1; |
2553 | } | |
2554 | } | |
2555 | ||
2556 | static void | |
2557 | check_excluded_libs (bfd *abfd) | |
2558 | { | |
2559 | struct excluded_lib *lib = excluded_libs; | |
2560 | ||
2561 | while (lib) | |
2562 | { | |
2563 | int len = strlen (lib->name); | |
2564 | const char *filename = lbasename (abfd->filename); | |
2565 | ||
2566 | if (strcmp (lib->name, "ALL") == 0) | |
2567 | { | |
2568 | abfd->no_export = TRUE; | |
2569 | return; | |
2570 | } | |
2571 | ||
2572 | if (strncmp (lib->name, filename, len) == 0 | |
2573 | && (filename[len] == '\0' | |
2574 | || (filename[len] == '.' && filename[len + 1] == 'a' | |
2575 | && filename[len + 2] == '\0'))) | |
2576 | { | |
2577 | abfd->no_export = TRUE; | |
2578 | return; | |
2579 | } | |
2580 | ||
2581 | lib = lib->next; | |
2582 | } | |
2583 | } | |
2584 | ||
252b5132 RH |
2585 | /* Get the symbols for an input file. */ |
2586 | ||
e9f53129 | 2587 | bfd_boolean |
1579bae1 AM |
2588 | load_symbols (lang_input_statement_type *entry, |
2589 | lang_statement_list_type *place) | |
252b5132 RH |
2590 | { |
2591 | char **matching; | |
2592 | ||
2593 | if (entry->loaded) | |
b34976b6 | 2594 | return TRUE; |
252b5132 RH |
2595 | |
2596 | ldfile_open_file (entry); | |
2597 | ||
c4b78195 NC |
2598 | /* Do not process further if the file was missing. */ |
2599 | if (entry->missing_file) | |
2600 | return TRUE; | |
2601 | ||
252b5132 RH |
2602 | if (! bfd_check_format (entry->the_bfd, bfd_archive) |
2603 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
2604 | { | |
2605 | bfd_error_type err; | |
e3f2db7f | 2606 | bfd_boolean save_ldlang_sysrooted_script; |
ddbb8a31 NC |
2607 | bfd_boolean save_add_DT_NEEDED_for_regular; |
2608 | bfd_boolean save_add_DT_NEEDED_for_dynamic; | |
2609 | bfd_boolean save_whole_archive; | |
b7a26f91 | 2610 | |
252b5132 | 2611 | err = bfd_get_error (); |
884fb58e NC |
2612 | |
2613 | /* See if the emulation has some special knowledge. */ | |
2614 | if (ldemul_unrecognized_file (entry)) | |
b34976b6 | 2615 | return TRUE; |
884fb58e | 2616 | |
252b5132 RH |
2617 | if (err == bfd_error_file_ambiguously_recognized) |
2618 | { | |
2619 | char **p; | |
2620 | ||
2621 | einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); | |
2622 | einfo (_("%B: matching formats:"), entry->the_bfd); | |
2623 | for (p = matching; *p != NULL; p++) | |
2624 | einfo (" %s", *p); | |
2625 | einfo ("%F\n"); | |
2626 | } | |
2627 | else if (err != bfd_error_file_not_recognized | |
2628 | || place == NULL) | |
967928e9 | 2629 | einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); |
b7a26f91 | 2630 | |
252b5132 RH |
2631 | bfd_close (entry->the_bfd); |
2632 | entry->the_bfd = NULL; | |
2633 | ||
252b5132 | 2634 | /* Try to interpret the file as a linker script. */ |
252b5132 RH |
2635 | ldfile_open_command_file (entry->filename); |
2636 | ||
bde18da4 | 2637 | push_stat_ptr (place); |
e3f2db7f AO |
2638 | save_ldlang_sysrooted_script = ldlang_sysrooted_script; |
2639 | ldlang_sysrooted_script = entry->sysrooted; | |
ddbb8a31 NC |
2640 | save_add_DT_NEEDED_for_regular = add_DT_NEEDED_for_regular; |
2641 | add_DT_NEEDED_for_regular = entry->add_DT_NEEDED_for_regular; | |
2642 | save_add_DT_NEEDED_for_dynamic = add_DT_NEEDED_for_dynamic; | |
2643 | add_DT_NEEDED_for_dynamic = entry->add_DT_NEEDED_for_dynamic; | |
fc1ed737 AM |
2644 | save_whole_archive = whole_archive; |
2645 | whole_archive = entry->whole_archive; | |
252b5132 | 2646 | |
b34976b6 | 2647 | ldfile_assumed_script = TRUE; |
252b5132 | 2648 | parser_input = input_script; |
532345f2 L |
2649 | /* We want to use the same -Bdynamic/-Bstatic as the one for |
2650 | ENTRY. */ | |
2651 | config.dynamic_link = entry->dynamic; | |
252b5132 | 2652 | yyparse (); |
b34976b6 | 2653 | ldfile_assumed_script = FALSE; |
252b5132 | 2654 | |
e3f2db7f | 2655 | ldlang_sysrooted_script = save_ldlang_sysrooted_script; |
ddbb8a31 NC |
2656 | add_DT_NEEDED_for_regular = save_add_DT_NEEDED_for_regular; |
2657 | add_DT_NEEDED_for_dynamic = save_add_DT_NEEDED_for_dynamic; | |
fc1ed737 | 2658 | whole_archive = save_whole_archive; |
bde18da4 | 2659 | pop_stat_ptr (); |
252b5132 | 2660 | |
bde18da4 | 2661 | return TRUE; |
252b5132 RH |
2662 | } |
2663 | ||
2664 | if (ldemul_recognized_file (entry)) | |
b34976b6 | 2665 | return TRUE; |
252b5132 RH |
2666 | |
2667 | /* We don't call ldlang_add_file for an archive. Instead, the | |
2668 | add_symbols entry point will call ldlang_add_file, via the | |
2669 | add_archive_element callback, for each element of the archive | |
2670 | which is used. */ | |
2671 | switch (bfd_get_format (entry->the_bfd)) | |
2672 | { | |
2673 | default: | |
2674 | break; | |
2675 | ||
2676 | case bfd_object: | |
2677 | ldlang_add_file (entry); | |
2678 | if (trace_files || trace_file_tries) | |
2679 | info_msg ("%I\n", entry); | |
2680 | break; | |
2681 | ||
2682 | case bfd_archive: | |
b58f81ae DJ |
2683 | check_excluded_libs (entry->the_bfd); |
2684 | ||
252b5132 RH |
2685 | if (entry->whole_archive) |
2686 | { | |
b7a26f91 | 2687 | bfd *member = NULL; |
b34976b6 | 2688 | bfd_boolean loaded = TRUE; |
6770ec8c NC |
2689 | |
2690 | for (;;) | |
252b5132 | 2691 | { |
6770ec8c NC |
2692 | member = bfd_openr_next_archived_file (entry->the_bfd, member); |
2693 | ||
2694 | if (member == NULL) | |
2695 | break; | |
b7a26f91 | 2696 | |
252b5132 | 2697 | if (! bfd_check_format (member, bfd_object)) |
6770ec8c NC |
2698 | { |
2699 | einfo (_("%F%B: member %B in archive is not an object\n"), | |
2700 | entry->the_bfd, member); | |
b34976b6 | 2701 | loaded = FALSE; |
6770ec8c NC |
2702 | } |
2703 | ||
252b5132 RH |
2704 | if (! ((*link_info.callbacks->add_archive_element) |
2705 | (&link_info, member, "--whole-archive"))) | |
2706 | abort (); | |
6770ec8c | 2707 | |
252b5132 | 2708 | if (! bfd_link_add_symbols (member, &link_info)) |
6770ec8c NC |
2709 | { |
2710 | einfo (_("%F%B: could not read symbols: %E\n"), member); | |
b34976b6 | 2711 | loaded = FALSE; |
6770ec8c | 2712 | } |
252b5132 RH |
2713 | } |
2714 | ||
6770ec8c NC |
2715 | entry->loaded = loaded; |
2716 | return loaded; | |
252b5132 | 2717 | } |
6770ec8c | 2718 | break; |
252b5132 RH |
2719 | } |
2720 | ||
03bdc404 | 2721 | if (bfd_link_add_symbols (entry->the_bfd, &link_info)) |
b34976b6 | 2722 | entry->loaded = TRUE; |
6770ec8c | 2723 | else |
252b5132 RH |
2724 | einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); |
2725 | ||
6770ec8c | 2726 | return entry->loaded; |
252b5132 RH |
2727 | } |
2728 | ||
b6bf44ba AM |
2729 | /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both |
2730 | may be NULL, indicating that it is a wildcard. Separate | |
2731 | lang_input_section statements are created for each part of the | |
2732 | expansion; they are added after the wild statement S. OUTPUT is | |
2733 | the output section. */ | |
252b5132 RH |
2734 | |
2735 | static void | |
1579bae1 AM |
2736 | wild (lang_wild_statement_type *s, |
2737 | const char *target ATTRIBUTE_UNUSED, | |
2738 | lang_output_section_statement_type *output) | |
252b5132 | 2739 | { |
b6bf44ba | 2740 | struct wildcard_list *sec; |
252b5132 | 2741 | |
50c77e5d | 2742 | if (s->handler_data[0] |
329c1c86 | 2743 | && s->handler_data[0]->spec.sorted == by_name |
50c77e5d NC |
2744 | && !s->filenames_sorted) |
2745 | { | |
329c1c86 AM |
2746 | lang_section_bst_type *tree; |
2747 | ||
50c77e5d NC |
2748 | walk_wild (s, output_section_callback_fast, output); |
2749 | ||
e6f2cbf5 | 2750 | tree = s->tree; |
329c1c86 | 2751 | if (tree) |
e6f2cbf5 L |
2752 | { |
2753 | output_section_callback_tree_to_list (s, tree, output); | |
2754 | s->tree = NULL; | |
2755 | } | |
50c77e5d | 2756 | } |
329c1c86 | 2757 | else |
50c77e5d | 2758 | walk_wild (s, output_section_callback, output); |
b6bf44ba | 2759 | |
abe6ac95 AM |
2760 | if (default_common_section == NULL) |
2761 | for (sec = s->section_list; sec != NULL; sec = sec->next) | |
b6bf44ba AM |
2762 | if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0) |
2763 | { | |
2764 | /* Remember the section that common is going to in case we | |
b7a26f91 | 2765 | later get something which doesn't know where to put it. */ |
b6bf44ba | 2766 | default_common_section = output; |
abe6ac95 | 2767 | break; |
b6bf44ba | 2768 | } |
252b5132 RH |
2769 | } |
2770 | ||
b34976b6 | 2771 | /* Return TRUE iff target is the sought target. */ |
08da4cac | 2772 | |
e50d8076 | 2773 | static int |
1579bae1 | 2774 | get_target (const bfd_target *target, void *data) |
e50d8076 | 2775 | { |
1e9cc1c2 | 2776 | const char *sought = (const char *) data; |
5f992e62 | 2777 | |
e50d8076 NC |
2778 | return strcmp (target->name, sought) == 0; |
2779 | } | |
2780 | ||
2781 | /* Like strcpy() but convert to lower case as well. */ | |
08da4cac | 2782 | |
e50d8076 | 2783 | static void |
1579bae1 | 2784 | stricpy (char *dest, char *src) |
e50d8076 NC |
2785 | { |
2786 | char c; | |
5f992e62 | 2787 | |
08da4cac | 2788 | while ((c = *src++) != 0) |
3882b010 | 2789 | *dest++ = TOLOWER (c); |
e50d8076 | 2790 | |
08da4cac | 2791 | *dest = 0; |
e50d8076 NC |
2792 | } |
2793 | ||
396a2467 | 2794 | /* Remove the first occurrence of needle (if any) in haystack |
e50d8076 | 2795 | from haystack. */ |
08da4cac | 2796 | |
e50d8076 | 2797 | static void |
1579bae1 | 2798 | strcut (char *haystack, char *needle) |
e50d8076 NC |
2799 | { |
2800 | haystack = strstr (haystack, needle); | |
5f992e62 | 2801 | |
e50d8076 NC |
2802 | if (haystack) |
2803 | { | |
08da4cac | 2804 | char *src; |
e50d8076 | 2805 | |
08da4cac KH |
2806 | for (src = haystack + strlen (needle); *src;) |
2807 | *haystack++ = *src++; | |
5f992e62 | 2808 | |
08da4cac | 2809 | *haystack = 0; |
e50d8076 NC |
2810 | } |
2811 | } | |
2812 | ||
2813 | /* Compare two target format name strings. | |
2814 | Return a value indicating how "similar" they are. */ | |
08da4cac | 2815 | |
e50d8076 | 2816 | static int |
1579bae1 | 2817 | name_compare (char *first, char *second) |
e50d8076 | 2818 | { |
08da4cac KH |
2819 | char *copy1; |
2820 | char *copy2; | |
2821 | int result; | |
5f992e62 | 2822 | |
1e9cc1c2 NC |
2823 | copy1 = (char *) xmalloc (strlen (first) + 1); |
2824 | copy2 = (char *) xmalloc (strlen (second) + 1); | |
e50d8076 NC |
2825 | |
2826 | /* Convert the names to lower case. */ | |
2827 | stricpy (copy1, first); | |
2828 | stricpy (copy2, second); | |
2829 | ||
1579bae1 | 2830 | /* Remove size and endian strings from the name. */ |
e50d8076 NC |
2831 | strcut (copy1, "big"); |
2832 | strcut (copy1, "little"); | |
2833 | strcut (copy2, "big"); | |
2834 | strcut (copy2, "little"); | |
2835 | ||
2836 | /* Return a value based on how many characters match, | |
2837 | starting from the beginning. If both strings are | |
2838 | the same then return 10 * their length. */ | |
08da4cac KH |
2839 | for (result = 0; copy1[result] == copy2[result]; result++) |
2840 | if (copy1[result] == 0) | |
e50d8076 NC |
2841 | { |
2842 | result *= 10; | |
2843 | break; | |
2844 | } | |
5f992e62 | 2845 | |
e50d8076 NC |
2846 | free (copy1); |
2847 | free (copy2); | |
2848 | ||
2849 | return result; | |
2850 | } | |
2851 | ||
2852 | /* Set by closest_target_match() below. */ | |
08da4cac | 2853 | static const bfd_target *winner; |
e50d8076 NC |
2854 | |
2855 | /* Scan all the valid bfd targets looking for one that has the endianness | |
2856 | requirement that was specified on the command line, and is the nearest | |
2857 | match to the original output target. */ | |
08da4cac | 2858 | |
e50d8076 | 2859 | static int |
1579bae1 | 2860 | closest_target_match (const bfd_target *target, void *data) |
e50d8076 | 2861 | { |
1e9cc1c2 | 2862 | const bfd_target *original = (const bfd_target *) data; |
5f992e62 | 2863 | |
08da4cac KH |
2864 | if (command_line.endian == ENDIAN_BIG |
2865 | && target->byteorder != BFD_ENDIAN_BIG) | |
e50d8076 | 2866 | return 0; |
5f992e62 | 2867 | |
08da4cac KH |
2868 | if (command_line.endian == ENDIAN_LITTLE |
2869 | && target->byteorder != BFD_ENDIAN_LITTLE) | |
e50d8076 NC |
2870 | return 0; |
2871 | ||
2872 | /* Must be the same flavour. */ | |
2873 | if (target->flavour != original->flavour) | |
2874 | return 0; | |
2875 | ||
de7dd2bd | 2876 | /* Ignore generic big and little endian elf vectors. */ |
967928e9 | 2877 | if (strcmp (target->name, "elf32-big") == 0 |
de7dd2bd NC |
2878 | || strcmp (target->name, "elf64-big") == 0 |
2879 | || strcmp (target->name, "elf32-little") == 0 | |
2880 | || strcmp (target->name, "elf64-little") == 0) | |
2881 | return 0; | |
2882 | ||
e50d8076 NC |
2883 | /* If we have not found a potential winner yet, then record this one. */ |
2884 | if (winner == NULL) | |
2885 | { | |
2886 | winner = target; | |
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | /* Oh dear, we now have two potential candidates for a successful match. | |
4de2d33d | 2891 | Compare their names and choose the better one. */ |
d1778b88 AM |
2892 | if (name_compare (target->name, original->name) |
2893 | > name_compare (winner->name, original->name)) | |
e50d8076 NC |
2894 | winner = target; |
2895 | ||
2896 | /* Keep on searching until wqe have checked them all. */ | |
2897 | return 0; | |
2898 | } | |
2899 | ||
2900 | /* Return the BFD target format of the first input file. */ | |
08da4cac | 2901 | |
e50d8076 | 2902 | static char * |
1579bae1 | 2903 | get_first_input_target (void) |
e50d8076 | 2904 | { |
08da4cac | 2905 | char *target = NULL; |
e50d8076 NC |
2906 | |
2907 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
2908 | { | |
2909 | if (s->header.type == lang_input_statement_enum | |
2910 | && s->real) | |
2911 | { | |
2912 | ldfile_open_file (s); | |
5f992e62 | 2913 | |
e50d8076 NC |
2914 | if (s->the_bfd != NULL |
2915 | && bfd_check_format (s->the_bfd, bfd_object)) | |
2916 | { | |
2917 | target = bfd_get_target (s->the_bfd); | |
5f992e62 | 2918 | |
e50d8076 NC |
2919 | if (target != NULL) |
2920 | break; | |
2921 | } | |
2922 | } | |
2923 | } | |
5f992e62 | 2924 | |
e50d8076 NC |
2925 | return target; |
2926 | } | |
2927 | ||
599917b8 | 2928 | const char * |
1579bae1 | 2929 | lang_get_output_target (void) |
599917b8 JJ |
2930 | { |
2931 | const char *target; | |
2932 | ||
2933 | /* Has the user told us which output format to use? */ | |
1579bae1 | 2934 | if (output_target != NULL) |
599917b8 JJ |
2935 | return output_target; |
2936 | ||
2937 | /* No - has the current target been set to something other than | |
2938 | the default? */ | |
2939 | if (current_target != default_target) | |
2940 | return current_target; | |
2941 | ||
2942 | /* No - can we determine the format of the first input file? */ | |
2943 | target = get_first_input_target (); | |
2944 | if (target != NULL) | |
2945 | return target; | |
2946 | ||
2947 | /* Failed - use the default output target. */ | |
2948 | return default_target; | |
2949 | } | |
2950 | ||
252b5132 RH |
2951 | /* Open the output file. */ |
2952 | ||
f13a99db | 2953 | static void |
1579bae1 | 2954 | open_output (const char *name) |
252b5132 | 2955 | { |
599917b8 | 2956 | output_target = lang_get_output_target (); |
5f992e62 | 2957 | |
08da4cac KH |
2958 | /* Has the user requested a particular endianness on the command |
2959 | line? */ | |
e50d8076 NC |
2960 | if (command_line.endian != ENDIAN_UNSET) |
2961 | { | |
08da4cac | 2962 | const bfd_target *target; |
1b69a0bf | 2963 | enum bfd_endian desired_endian; |
e50d8076 NC |
2964 | |
2965 | /* Get the chosen target. */ | |
1579bae1 | 2966 | target = bfd_search_for_target (get_target, (void *) output_target); |
e50d8076 | 2967 | |
c13b1b77 NC |
2968 | /* If the target is not supported, we cannot do anything. */ |
2969 | if (target != NULL) | |
e50d8076 | 2970 | { |
c13b1b77 NC |
2971 | if (command_line.endian == ENDIAN_BIG) |
2972 | desired_endian = BFD_ENDIAN_BIG; | |
e50d8076 | 2973 | else |
c13b1b77 | 2974 | desired_endian = BFD_ENDIAN_LITTLE; |
5f992e62 AM |
2975 | |
2976 | /* See if the target has the wrong endianness. This should | |
2977 | not happen if the linker script has provided big and | |
2978 | little endian alternatives, but some scrips don't do | |
2979 | this. */ | |
c13b1b77 | 2980 | if (target->byteorder != desired_endian) |
e50d8076 | 2981 | { |
c13b1b77 NC |
2982 | /* If it does, then see if the target provides |
2983 | an alternative with the correct endianness. */ | |
2984 | if (target->alternative_target != NULL | |
2985 | && (target->alternative_target->byteorder == desired_endian)) | |
2986 | output_target = target->alternative_target->name; | |
e50d8076 | 2987 | else |
c13b1b77 | 2988 | { |
5f992e62 AM |
2989 | /* Try to find a target as similar as possible to |
2990 | the default target, but which has the desired | |
2991 | endian characteristic. */ | |
1579bae1 AM |
2992 | bfd_search_for_target (closest_target_match, |
2993 | (void *) target); | |
5f992e62 AM |
2994 | |
2995 | /* Oh dear - we could not find any targets that | |
2996 | satisfy our requirements. */ | |
c13b1b77 | 2997 | if (winner == NULL) |
6feb9908 AM |
2998 | einfo (_("%P: warning: could not find any targets" |
2999 | " that match endianness requirement\n")); | |
c13b1b77 NC |
3000 | else |
3001 | output_target = winner->name; | |
3002 | } | |
e50d8076 NC |
3003 | } |
3004 | } | |
252b5132 | 3005 | } |
5f992e62 | 3006 | |
f13a99db | 3007 | link_info.output_bfd = bfd_openw (name, output_target); |
252b5132 | 3008 | |
f13a99db | 3009 | if (link_info.output_bfd == NULL) |
252b5132 RH |
3010 | { |
3011 | if (bfd_get_error () == bfd_error_invalid_target) | |
e50d8076 NC |
3012 | einfo (_("%P%F: target %s not found\n"), output_target); |
3013 | ||
252b5132 RH |
3014 | einfo (_("%P%F: cannot open output file %s: %E\n"), name); |
3015 | } | |
3016 | ||
b34976b6 | 3017 | delete_output_file_on_failure = TRUE; |
252b5132 | 3018 | |
f13a99db | 3019 | if (! bfd_set_format (link_info.output_bfd, bfd_object)) |
252b5132 | 3020 | einfo (_("%P%F:%s: can not make object file: %E\n"), name); |
f13a99db | 3021 | if (! bfd_set_arch_mach (link_info.output_bfd, |
252b5132 RH |
3022 | ldfile_output_architecture, |
3023 | ldfile_output_machine)) | |
3024 | einfo (_("%P%F:%s: can not set architecture: %E\n"), name); | |
3025 | ||
f13a99db | 3026 | link_info.hash = bfd_link_hash_table_create (link_info.output_bfd); |
1579bae1 | 3027 | if (link_info.hash == NULL) |
384a9dda | 3028 | einfo (_("%P%F: can not create hash table: %E\n")); |
252b5132 | 3029 | |
f13a99db | 3030 | bfd_set_gp_size (link_info.output_bfd, g_switch_value); |
252b5132 RH |
3031 | } |
3032 | ||
252b5132 | 3033 | static void |
1579bae1 | 3034 | ldlang_open_output (lang_statement_union_type *statement) |
252b5132 RH |
3035 | { |
3036 | switch (statement->header.type) | |
3037 | { | |
3038 | case lang_output_statement_enum: | |
f13a99db AM |
3039 | ASSERT (link_info.output_bfd == NULL); |
3040 | open_output (statement->output_statement.name); | |
252b5132 | 3041 | ldemul_set_output_arch (); |
1049f94e | 3042 | if (config.magic_demand_paged && !link_info.relocatable) |
f13a99db | 3043 | link_info.output_bfd->flags |= D_PAGED; |
252b5132 | 3044 | else |
f13a99db | 3045 | link_info.output_bfd->flags &= ~D_PAGED; |
252b5132 | 3046 | if (config.text_read_only) |
f13a99db | 3047 | link_info.output_bfd->flags |= WP_TEXT; |
252b5132 | 3048 | else |
f13a99db | 3049 | link_info.output_bfd->flags &= ~WP_TEXT; |
252b5132 | 3050 | if (link_info.traditional_format) |
f13a99db | 3051 | link_info.output_bfd->flags |= BFD_TRADITIONAL_FORMAT; |
252b5132 | 3052 | else |
f13a99db | 3053 | link_info.output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; |
252b5132 RH |
3054 | break; |
3055 | ||
3056 | case lang_target_statement_enum: | |
3057 | current_target = statement->target_statement.target; | |
3058 | break; | |
3059 | default: | |
3060 | break; | |
3061 | } | |
3062 | } | |
3063 | ||
e5caa5e0 AM |
3064 | /* Convert between addresses in bytes and sizes in octets. |
3065 | For currently supported targets, octets_per_byte is always a power | |
3066 | of two, so we can use shifts. */ | |
3067 | #define TO_ADDR(X) ((X) >> opb_shift) | |
3068 | #define TO_SIZE(X) ((X) << opb_shift) | |
3069 | ||
3070 | /* Support the above. */ | |
3071 | static unsigned int opb_shift = 0; | |
3072 | ||
3073 | static void | |
3074 | init_opb (void) | |
3075 | { | |
3076 | unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, | |
3077 | ldfile_output_machine); | |
3078 | opb_shift = 0; | |
3079 | if (x > 1) | |
3080 | while ((x & 1) == 0) | |
3081 | { | |
3082 | x >>= 1; | |
3083 | ++opb_shift; | |
3084 | } | |
3085 | ASSERT (x == 1); | |
3086 | } | |
3087 | ||
252b5132 RH |
3088 | /* Open all the input files. */ |
3089 | ||
3090 | static void | |
1579bae1 | 3091 | open_input_bfds (lang_statement_union_type *s, bfd_boolean force) |
252b5132 | 3092 | { |
1579bae1 | 3093 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
3094 | { |
3095 | switch (s->header.type) | |
3096 | { | |
3097 | case lang_constructors_statement_enum: | |
3098 | open_input_bfds (constructor_list.head, force); | |
3099 | break; | |
3100 | case lang_output_section_statement_enum: | |
3101 | open_input_bfds (s->output_section_statement.children.head, force); | |
3102 | break; | |
3103 | case lang_wild_statement_enum: | |
08da4cac | 3104 | /* Maybe we should load the file's symbols. */ |
252b5132 | 3105 | if (s->wild_statement.filename |
97407faf AM |
3106 | && !wildcardp (s->wild_statement.filename) |
3107 | && !archive_path (s->wild_statement.filename)) | |
4a43e768 | 3108 | lookup_name (s->wild_statement.filename); |
252b5132 RH |
3109 | open_input_bfds (s->wild_statement.children.head, force); |
3110 | break; | |
3111 | case lang_group_statement_enum: | |
3112 | { | |
3113 | struct bfd_link_hash_entry *undefs; | |
3114 | ||
3115 | /* We must continually search the entries in the group | |
08da4cac KH |
3116 | until no new symbols are added to the list of undefined |
3117 | symbols. */ | |
252b5132 RH |
3118 | |
3119 | do | |
3120 | { | |
3121 | undefs = link_info.hash->undefs_tail; | |
b34976b6 | 3122 | open_input_bfds (s->group_statement.children.head, TRUE); |
252b5132 RH |
3123 | } |
3124 | while (undefs != link_info.hash->undefs_tail); | |
3125 | } | |
3126 | break; | |
3127 | case lang_target_statement_enum: | |
3128 | current_target = s->target_statement.target; | |
3129 | break; | |
3130 | case lang_input_statement_enum: | |
e50d8076 | 3131 | if (s->input_statement.real) |
252b5132 | 3132 | { |
bde18da4 | 3133 | lang_statement_union_type **os_tail; |
252b5132 RH |
3134 | lang_statement_list_type add; |
3135 | ||
3136 | s->input_statement.target = current_target; | |
3137 | ||
3138 | /* If we are being called from within a group, and this | |
afd7a018 AM |
3139 | is an archive which has already been searched, then |
3140 | force it to be researched unless the whole archive | |
cd4c806a | 3141 | has been loaded already. */ |
252b5132 | 3142 | if (force |
cd4c806a | 3143 | && !s->input_statement.whole_archive |
252b5132 RH |
3144 | && s->input_statement.loaded |
3145 | && bfd_check_format (s->input_statement.the_bfd, | |
3146 | bfd_archive)) | |
b34976b6 | 3147 | s->input_statement.loaded = FALSE; |
252b5132 | 3148 | |
bde18da4 | 3149 | os_tail = lang_output_section_statement.tail; |
d1778b88 | 3150 | lang_list_init (&add); |
1276aefa | 3151 | |
6770ec8c | 3152 | if (! load_symbols (&s->input_statement, &add)) |
b34976b6 | 3153 | config.make_executable = FALSE; |
252b5132 RH |
3154 | |
3155 | if (add.head != NULL) | |
3156 | { | |
bde18da4 AM |
3157 | /* If this was a script with output sections then |
3158 | tack any added statements on to the end of the | |
3159 | list. This avoids having to reorder the output | |
3160 | section statement list. Very likely the user | |
3161 | forgot -T, and whatever we do here will not meet | |
3162 | naive user expectations. */ | |
3163 | if (os_tail != lang_output_section_statement.tail) | |
3164 | { | |
3165 | einfo (_("%P: warning: %s contains output sections;" | |
3166 | " did you forget -T?\n"), | |
3167 | s->input_statement.filename); | |
3168 | *stat_ptr->tail = add.head; | |
3169 | stat_ptr->tail = add.tail; | |
3170 | } | |
3171 | else | |
3172 | { | |
3173 | *add.tail = s->header.next; | |
3174 | s->header.next = add.head; | |
3175 | } | |
252b5132 RH |
3176 | } |
3177 | } | |
3178 | break; | |
3179 | default: | |
3180 | break; | |
3181 | } | |
3182 | } | |
c4b78195 NC |
3183 | |
3184 | /* Exit if any of the files were missing. */ | |
3185 | if (missing_file) | |
3186 | einfo ("%F"); | |
252b5132 RH |
3187 | } |
3188 | ||
420e579c HPN |
3189 | /* Add a symbol to a hash of symbols used in DEFINED (NAME) expressions. */ |
3190 | ||
3191 | void | |
3192 | lang_track_definedness (const char *name) | |
3193 | { | |
3194 | if (bfd_hash_lookup (&lang_definedness_table, name, TRUE, FALSE) == NULL) | |
3195 | einfo (_("%P%F: bfd_hash_lookup failed creating symbol %s\n"), name); | |
3196 | } | |
3197 | ||
3198 | /* New-function for the definedness hash table. */ | |
3199 | ||
3200 | static struct bfd_hash_entry * | |
3201 | lang_definedness_newfunc (struct bfd_hash_entry *entry, | |
3202 | struct bfd_hash_table *table ATTRIBUTE_UNUSED, | |
3203 | const char *name ATTRIBUTE_UNUSED) | |
3204 | { | |
3205 | struct lang_definedness_hash_entry *ret | |
3206 | = (struct lang_definedness_hash_entry *) entry; | |
3207 | ||
3208 | if (ret == NULL) | |
3209 | ret = (struct lang_definedness_hash_entry *) | |
3210 | bfd_hash_allocate (table, sizeof (struct lang_definedness_hash_entry)); | |
3211 | ||
3212 | if (ret == NULL) | |
3213 | einfo (_("%P%F: bfd_hash_allocate failed creating symbol %s\n"), name); | |
3214 | ||
3215 | ret->iteration = -1; | |
3216 | return &ret->root; | |
3217 | } | |
3218 | ||
3219 | /* Return the iteration when the definition of NAME was last updated. A | |
3220 | value of -1 means that the symbol is not defined in the linker script | |
3221 | or the command line, but may be defined in the linker symbol table. */ | |
3222 | ||
3223 | int | |
3224 | lang_symbol_definition_iteration (const char *name) | |
3225 | { | |
3226 | struct lang_definedness_hash_entry *defentry | |
3227 | = (struct lang_definedness_hash_entry *) | |
3228 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
3229 | ||
3230 | /* We've already created this one on the presence of DEFINED in the | |
3231 | script, so it can't be NULL unless something is borked elsewhere in | |
3232 | the code. */ | |
3233 | if (defentry == NULL) | |
3234 | FAIL (); | |
3235 | ||
3236 | return defentry->iteration; | |
3237 | } | |
3238 | ||
3239 | /* Update the definedness state of NAME. */ | |
3240 | ||
3241 | void | |
3242 | lang_update_definedness (const char *name, struct bfd_link_hash_entry *h) | |
3243 | { | |
3244 | struct lang_definedness_hash_entry *defentry | |
3245 | = (struct lang_definedness_hash_entry *) | |
3246 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
3247 | ||
3248 | /* We don't keep track of symbols not tested with DEFINED. */ | |
3249 | if (defentry == NULL) | |
3250 | return; | |
3251 | ||
3252 | /* If the symbol was already defined, and not from an earlier statement | |
3253 | iteration, don't update the definedness iteration, because that'd | |
3254 | make the symbol seem defined in the linker script at this point, and | |
3255 | it wasn't; it was defined in some object. If we do anyway, DEFINED | |
3256 | would start to yield false before this point and the construct "sym = | |
3257 | DEFINED (sym) ? sym : X;" would change sym to X despite being defined | |
3258 | in an object. */ | |
3259 | if (h->type != bfd_link_hash_undefined | |
3260 | && h->type != bfd_link_hash_common | |
3261 | && h->type != bfd_link_hash_new | |
3262 | && defentry->iteration == -1) | |
3263 | return; | |
3264 | ||
3265 | defentry->iteration = lang_statement_iteration; | |
3266 | } | |
3267 | ||
08da4cac | 3268 | /* Add the supplied name to the symbol table as an undefined reference. |
fcf0e35b AM |
3269 | This is a two step process as the symbol table doesn't even exist at |
3270 | the time the ld command line is processed. First we put the name | |
3271 | on a list, then, once the output file has been opened, transfer the | |
3272 | name to the symbol table. */ | |
3273 | ||
e3e942e9 | 3274 | typedef struct bfd_sym_chain ldlang_undef_chain_list_type; |
252b5132 | 3275 | |
e3e942e9 | 3276 | #define ldlang_undef_chain_list_head entry_symbol.next |
252b5132 RH |
3277 | |
3278 | void | |
1579bae1 | 3279 | ldlang_add_undef (const char *const name) |
252b5132 | 3280 | { |
d3ce72d0 NC |
3281 | ldlang_undef_chain_list_type *new_undef = (ldlang_undef_chain_list_type *) |
3282 | stat_alloc (sizeof (ldlang_undef_chain_list_type)); | |
252b5132 | 3283 | |
d3ce72d0 NC |
3284 | new_undef->next = ldlang_undef_chain_list_head; |
3285 | ldlang_undef_chain_list_head = new_undef; | |
252b5132 | 3286 | |
d3ce72d0 | 3287 | new_undef->name = xstrdup (name); |
fcf0e35b | 3288 | |
f13a99db | 3289 | if (link_info.output_bfd != NULL) |
d3ce72d0 | 3290 | insert_undefined (new_undef->name); |
fcf0e35b AM |
3291 | } |
3292 | ||
3293 | /* Insert NAME as undefined in the symbol table. */ | |
3294 | ||
3295 | static void | |
1579bae1 | 3296 | insert_undefined (const char *name) |
fcf0e35b AM |
3297 | { |
3298 | struct bfd_link_hash_entry *h; | |
3299 | ||
b34976b6 | 3300 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE); |
1579bae1 | 3301 | if (h == NULL) |
fcf0e35b AM |
3302 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
3303 | if (h->type == bfd_link_hash_new) | |
3304 | { | |
3305 | h->type = bfd_link_hash_undefined; | |
3306 | h->u.undef.abfd = NULL; | |
3307 | bfd_link_add_undef (link_info.hash, h); | |
3308 | } | |
252b5132 RH |
3309 | } |
3310 | ||
3311 | /* Run through the list of undefineds created above and place them | |
3312 | into the linker hash table as undefined symbols belonging to the | |
08da4cac KH |
3313 | script file. */ |
3314 | ||
252b5132 | 3315 | static void |
1579bae1 | 3316 | lang_place_undefineds (void) |
252b5132 RH |
3317 | { |
3318 | ldlang_undef_chain_list_type *ptr; | |
3319 | ||
1579bae1 AM |
3320 | for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next) |
3321 | insert_undefined (ptr->name); | |
252b5132 RH |
3322 | } |
3323 | ||
0841712e JJ |
3324 | /* Check for all readonly or some readwrite sections. */ |
3325 | ||
3326 | static void | |
6feb9908 AM |
3327 | check_input_sections |
3328 | (lang_statement_union_type *s, | |
3329 | lang_output_section_statement_type *output_section_statement) | |
0841712e JJ |
3330 | { |
3331 | for (; s != (lang_statement_union_type *) NULL; s = s->header.next) | |
3332 | { | |
3333 | switch (s->header.type) | |
967928e9 AM |
3334 | { |
3335 | case lang_wild_statement_enum: | |
3336 | walk_wild (&s->wild_statement, check_section_callback, | |
3337 | output_section_statement); | |
3338 | if (! output_section_statement->all_input_readonly) | |
3339 | return; | |
3340 | break; | |
3341 | case lang_constructors_statement_enum: | |
3342 | check_input_sections (constructor_list.head, | |
3343 | output_section_statement); | |
3344 | if (! output_section_statement->all_input_readonly) | |
3345 | return; | |
3346 | break; | |
3347 | case lang_group_statement_enum: | |
3348 | check_input_sections (s->group_statement.children.head, | |
3349 | output_section_statement); | |
3350 | if (! output_section_statement->all_input_readonly) | |
3351 | return; | |
3352 | break; | |
3353 | default: | |
3354 | break; | |
3355 | } | |
0841712e JJ |
3356 | } |
3357 | } | |
3358 | ||
bcaa7b3e L |
3359 | /* Update wildcard statements if needed. */ |
3360 | ||
3361 | static void | |
3362 | update_wild_statements (lang_statement_union_type *s) | |
3363 | { | |
3364 | struct wildcard_list *sec; | |
3365 | ||
3366 | switch (sort_section) | |
3367 | { | |
3368 | default: | |
3369 | FAIL (); | |
3370 | ||
3371 | case none: | |
3372 | break; | |
3373 | ||
3374 | case by_name: | |
3375 | case by_alignment: | |
3376 | for (; s != NULL; s = s->header.next) | |
3377 | { | |
3378 | switch (s->header.type) | |
3379 | { | |
3380 | default: | |
3381 | break; | |
3382 | ||
3383 | case lang_wild_statement_enum: | |
3384 | sec = s->wild_statement.section_list; | |
0d0999db L |
3385 | for (sec = s->wild_statement.section_list; sec != NULL; |
3386 | sec = sec->next) | |
bcaa7b3e L |
3387 | { |
3388 | switch (sec->spec.sorted) | |
3389 | { | |
3390 | case none: | |
3391 | sec->spec.sorted = sort_section; | |
3392 | break; | |
3393 | case by_name: | |
3394 | if (sort_section == by_alignment) | |
3395 | sec->spec.sorted = by_name_alignment; | |
3396 | break; | |
3397 | case by_alignment: | |
3398 | if (sort_section == by_name) | |
3399 | sec->spec.sorted = by_alignment_name; | |
3400 | break; | |
3401 | default: | |
3402 | break; | |
3403 | } | |
3404 | } | |
3405 | break; | |
3406 | ||
3407 | case lang_constructors_statement_enum: | |
3408 | update_wild_statements (constructor_list.head); | |
3409 | break; | |
3410 | ||
3411 | case lang_output_section_statement_enum: | |
3412 | update_wild_statements | |
3413 | (s->output_section_statement.children.head); | |
3414 | break; | |
3415 | ||
3416 | case lang_group_statement_enum: | |
3417 | update_wild_statements (s->group_statement.children.head); | |
3418 | break; | |
3419 | } | |
3420 | } | |
3421 | break; | |
3422 | } | |
3423 | } | |
3424 | ||
396a2467 | 3425 | /* Open input files and attach to output sections. */ |
08da4cac | 3426 | |
252b5132 | 3427 | static void |
1579bae1 AM |
3428 | map_input_to_output_sections |
3429 | (lang_statement_union_type *s, const char *target, | |
afd7a018 | 3430 | lang_output_section_statement_type *os) |
252b5132 | 3431 | { |
1579bae1 | 3432 | for (; s != NULL; s = s->header.next) |
252b5132 | 3433 | { |
dfa7b0b8 AM |
3434 | lang_output_section_statement_type *tos; |
3435 | flagword flags; | |
3436 | ||
252b5132 RH |
3437 | switch (s->header.type) |
3438 | { | |
252b5132 | 3439 | case lang_wild_statement_enum: |
afd7a018 | 3440 | wild (&s->wild_statement, target, os); |
abc6ab0a | 3441 | break; |
252b5132 RH |
3442 | case lang_constructors_statement_enum: |
3443 | map_input_to_output_sections (constructor_list.head, | |
3444 | target, | |
afd7a018 | 3445 | os); |
252b5132 RH |
3446 | break; |
3447 | case lang_output_section_statement_enum: | |
dfa7b0b8 AM |
3448 | tos = &s->output_section_statement; |
3449 | if (tos->constraint != 0) | |
0841712e | 3450 | { |
dfa7b0b8 AM |
3451 | if (tos->constraint != ONLY_IF_RW |
3452 | && tos->constraint != ONLY_IF_RO) | |
0841712e | 3453 | break; |
dfa7b0b8 AM |
3454 | tos->all_input_readonly = TRUE; |
3455 | check_input_sections (tos->children.head, tos); | |
3456 | if (tos->all_input_readonly != (tos->constraint == ONLY_IF_RO)) | |
0841712e | 3457 | { |
dfa7b0b8 | 3458 | tos->constraint = -1; |
0841712e JJ |
3459 | break; |
3460 | } | |
3461 | } | |
dfa7b0b8 | 3462 | map_input_to_output_sections (tos->children.head, |
252b5132 | 3463 | target, |
dfa7b0b8 | 3464 | tos); |
a431bc2e AM |
3465 | break; |
3466 | case lang_output_statement_enum: | |
252b5132 RH |
3467 | break; |
3468 | case lang_target_statement_enum: | |
3469 | target = s->target_statement.target; | |
3470 | break; | |
3471 | case lang_group_statement_enum: | |
3472 | map_input_to_output_sections (s->group_statement.children.head, | |
3473 | target, | |
afd7a018 | 3474 | os); |
252b5132 | 3475 | break; |
384d938f NS |
3476 | case lang_data_statement_enum: |
3477 | /* Make sure that any sections mentioned in the expression | |
3478 | are initialized. */ | |
3479 | exp_init_os (s->data_statement.exp); | |
dfa7b0b8 AM |
3480 | /* The output section gets CONTENTS, and usually ALLOC and |
3481 | LOAD, but the latter two may be overridden by the script. */ | |
3482 | flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD; | |
3483 | switch (os->sectype) | |
3484 | { | |
3485 | case normal_section: | |
3486 | case overlay_section: | |
3487 | break; | |
3488 | case noalloc_section: | |
3489 | flags = SEC_HAS_CONTENTS; | |
3490 | break; | |
3491 | case noload_section: | |
3492 | flags = SEC_HAS_CONTENTS | SEC_NEVER_LOAD; | |
3493 | break; | |
3494 | } | |
a431bc2e | 3495 | if (os->bfd_section == NULL) |
dfa7b0b8 | 3496 | init_os (os, flags); |
a431bc2e AM |
3497 | else |
3498 | os->bfd_section->flags |= flags; | |
afd7a018 | 3499 | break; |
252b5132 | 3500 | case lang_input_section_enum: |
e0f6802f AM |
3501 | break; |
3502 | case lang_fill_statement_enum: | |
252b5132 | 3503 | case lang_object_symbols_statement_enum: |
252b5132 RH |
3504 | case lang_reloc_statement_enum: |
3505 | case lang_padding_statement_enum: | |
3506 | case lang_input_statement_enum: | |
afd7a018 | 3507 | if (os != NULL && os->bfd_section == NULL) |
dfa7b0b8 | 3508 | init_os (os, 0); |
252b5132 RH |
3509 | break; |
3510 | case lang_assignment_statement_enum: | |
afd7a018 | 3511 | if (os != NULL && os->bfd_section == NULL) |
dfa7b0b8 | 3512 | init_os (os, 0); |
252b5132 RH |
3513 | |
3514 | /* Make sure that any sections mentioned in the assignment | |
08da4cac | 3515 | are initialized. */ |
252b5132 RH |
3516 | exp_init_os (s->assignment_statement.exp); |
3517 | break; | |
252b5132 | 3518 | case lang_address_statement_enum: |
a431bc2e AM |
3519 | /* Mark the specified section with the supplied address. |
3520 | If this section was actually a segment marker, then the | |
3521 | directive is ignored if the linker script explicitly | |
3522 | processed the segment marker. Originally, the linker | |
3523 | treated segment directives (like -Ttext on the | |
3524 | command-line) as section directives. We honor the | |
3525 | section directive semantics for backwards compatibilty; | |
3526 | linker scripts that do not specifically check for | |
3527 | SEGMENT_START automatically get the old semantics. */ | |
329c1c86 | 3528 | if (!s->address_statement.segment |
ba916c8a MM |
3529 | || !s->address_statement.segment->used) |
3530 | { | |
dfa7b0b8 AM |
3531 | const char *name = s->address_statement.section_name; |
3532 | ||
3533 | /* Create the output section statement here so that | |
3534 | orphans with a set address will be placed after other | |
3535 | script sections. If we let the orphan placement code | |
3536 | place them in amongst other sections then the address | |
3537 | will affect following script sections, which is | |
3538 | likely to surprise naive users. */ | |
3539 | tos = lang_output_section_statement_lookup (name, 0, TRUE); | |
3540 | tos->addr_tree = s->address_statement.address; | |
3541 | if (tos->bfd_section == NULL) | |
3542 | init_os (tos, 0); | |
ba916c8a | 3543 | } |
252b5132 | 3544 | break; |
53d25da6 AM |
3545 | case lang_insert_statement_enum: |
3546 | break; | |
3547 | } | |
3548 | } | |
3549 | } | |
3550 | ||
3551 | /* An insert statement snips out all the linker statements from the | |
3552 | start of the list and places them after the output section | |
3553 | statement specified by the insert. This operation is complicated | |
3554 | by the fact that we keep a doubly linked list of output section | |
3555 | statements as well as the singly linked list of all statements. */ | |
3556 | ||
3557 | static void | |
3558 | process_insert_statements (void) | |
3559 | { | |
3560 | lang_statement_union_type **s; | |
3561 | lang_output_section_statement_type *first_os = NULL; | |
3562 | lang_output_section_statement_type *last_os = NULL; | |
66c103b7 | 3563 | lang_output_section_statement_type *os; |
53d25da6 AM |
3564 | |
3565 | /* "start of list" is actually the statement immediately after | |
3566 | the special abs_section output statement, so that it isn't | |
3567 | reordered. */ | |
3568 | s = &lang_output_section_statement.head; | |
3569 | while (*(s = &(*s)->header.next) != NULL) | |
3570 | { | |
3571 | if ((*s)->header.type == lang_output_section_statement_enum) | |
3572 | { | |
3573 | /* Keep pointers to the first and last output section | |
3574 | statement in the sequence we may be about to move. */ | |
d2ae7be0 AM |
3575 | os = &(*s)->output_section_statement; |
3576 | ||
3577 | ASSERT (last_os == NULL || last_os->next == os); | |
3578 | last_os = os; | |
66c103b7 AM |
3579 | |
3580 | /* Set constraint negative so that lang_output_section_find | |
3581 | won't match this output section statement. At this | |
3582 | stage in linking constraint has values in the range | |
3583 | [-1, ONLY_IN_RW]. */ | |
3584 | last_os->constraint = -2 - last_os->constraint; | |
53d25da6 AM |
3585 | if (first_os == NULL) |
3586 | first_os = last_os; | |
3587 | } | |
3588 | else if ((*s)->header.type == lang_insert_statement_enum) | |
3589 | { | |
3590 | lang_insert_statement_type *i = &(*s)->insert_statement; | |
3591 | lang_output_section_statement_type *where; | |
53d25da6 AM |
3592 | lang_statement_union_type **ptr; |
3593 | lang_statement_union_type *first; | |
3594 | ||
3595 | where = lang_output_section_find (i->where); | |
3596 | if (where != NULL && i->is_before) | |
3597 | { | |
967928e9 | 3598 | do |
53d25da6 | 3599 | where = where->prev; |
66c103b7 | 3600 | while (where != NULL && where->constraint < 0); |
53d25da6 AM |
3601 | } |
3602 | if (where == NULL) | |
3603 | { | |
66c103b7 AM |
3604 | einfo (_("%F%P: %s not found for insert\n"), i->where); |
3605 | return; | |
53d25da6 AM |
3606 | } |
3607 | ||
3608 | /* Deal with reordering the output section statement list. */ | |
3609 | if (last_os != NULL) | |
3610 | { | |
3611 | asection *first_sec, *last_sec; | |
29183214 | 3612 | struct lang_output_section_statement_struct **next; |
53d25da6 AM |
3613 | |
3614 | /* Snip out the output sections we are moving. */ | |
3615 | first_os->prev->next = last_os->next; | |
3616 | if (last_os->next == NULL) | |
29183214 L |
3617 | { |
3618 | next = &first_os->prev->next; | |
3619 | lang_output_section_statement.tail | |
3620 | = (lang_statement_union_type **) next; | |
3621 | } | |
53d25da6 AM |
3622 | else |
3623 | last_os->next->prev = first_os->prev; | |
3624 | /* Add them in at the new position. */ | |
3625 | last_os->next = where->next; | |
3626 | if (where->next == NULL) | |
29183214 L |
3627 | { |
3628 | next = &last_os->next; | |
3629 | lang_output_section_statement.tail | |
3630 | = (lang_statement_union_type **) next; | |
3631 | } | |
53d25da6 AM |
3632 | else |
3633 | where->next->prev = last_os; | |
3634 | first_os->prev = where; | |
3635 | where->next = first_os; | |
3636 | ||
3637 | /* Move the bfd sections in the same way. */ | |
3638 | first_sec = NULL; | |
3639 | last_sec = NULL; | |
3640 | for (os = first_os; os != NULL; os = os->next) | |
3641 | { | |
66c103b7 | 3642 | os->constraint = -2 - os->constraint; |
53d25da6 AM |
3643 | if (os->bfd_section != NULL |
3644 | && os->bfd_section->owner != NULL) | |
3645 | { | |
3646 | last_sec = os->bfd_section; | |
3647 | if (first_sec == NULL) | |
3648 | first_sec = last_sec; | |
3649 | } | |
3650 | if (os == last_os) | |
3651 | break; | |
3652 | } | |
3653 | if (last_sec != NULL) | |
3654 | { | |
3655 | asection *sec = where->bfd_section; | |
3656 | if (sec == NULL) | |
3657 | sec = output_prev_sec_find (where); | |
3658 | ||
3659 | /* The place we want to insert must come after the | |
3660 | sections we are moving. So if we find no | |
3661 | section or if the section is the same as our | |
3662 | last section, then no move is needed. */ | |
3663 | if (sec != NULL && sec != last_sec) | |
3664 | { | |
3665 | /* Trim them off. */ | |
3666 | if (first_sec->prev != NULL) | |
3667 | first_sec->prev->next = last_sec->next; | |
3668 | else | |
f13a99db | 3669 | link_info.output_bfd->sections = last_sec->next; |
53d25da6 AM |
3670 | if (last_sec->next != NULL) |
3671 | last_sec->next->prev = first_sec->prev; | |
3672 | else | |
f13a99db | 3673 | link_info.output_bfd->section_last = first_sec->prev; |
53d25da6 AM |
3674 | /* Add back. */ |
3675 | last_sec->next = sec->next; | |
3676 | if (sec->next != NULL) | |
3677 | sec->next->prev = last_sec; | |
3678 | else | |
f13a99db | 3679 | link_info.output_bfd->section_last = last_sec; |
53d25da6 AM |
3680 | first_sec->prev = sec; |
3681 | sec->next = first_sec; | |
3682 | } | |
3683 | } | |
3684 | ||
3685 | first_os = NULL; | |
3686 | last_os = NULL; | |
3687 | } | |
3688 | ||
3689 | ptr = insert_os_after (where); | |
3690 | /* Snip everything after the abs_section output statement we | |
3691 | know is at the start of the list, up to and including | |
3692 | the insert statement we are currently processing. */ | |
3693 | first = lang_output_section_statement.head->header.next; | |
3694 | lang_output_section_statement.head->header.next = (*s)->header.next; | |
3695 | /* Add them back where they belong. */ | |
3696 | *s = *ptr; | |
3697 | if (*s == NULL) | |
3698 | statement_list.tail = s; | |
3699 | *ptr = first; | |
3700 | s = &lang_output_section_statement.head; | |
252b5132 RH |
3701 | } |
3702 | } | |
66c103b7 AM |
3703 | |
3704 | /* Undo constraint twiddling. */ | |
3705 | for (os = first_os; os != NULL; os = os->next) | |
3706 | { | |
3707 | os->constraint = -2 - os->constraint; | |
3708 | if (os == last_os) | |
3709 | break; | |
3710 | } | |
252b5132 RH |
3711 | } |
3712 | ||
4bd5a393 AM |
3713 | /* An output section might have been removed after its statement was |
3714 | added. For example, ldemul_before_allocation can remove dynamic | |
3715 | sections if they turn out to be not needed. Clean them up here. */ | |
3716 | ||
8423293d | 3717 | void |
1579bae1 | 3718 | strip_excluded_output_sections (void) |
4bd5a393 | 3719 | { |
afd7a018 | 3720 | lang_output_section_statement_type *os; |
4bd5a393 | 3721 | |
046183de | 3722 | /* Run lang_size_sections (if not already done). */ |
e9ee469a AM |
3723 | if (expld.phase != lang_mark_phase_enum) |
3724 | { | |
3725 | expld.phase = lang_mark_phase_enum; | |
3726 | expld.dataseg.phase = exp_dataseg_none; | |
3727 | one_lang_size_sections_pass (NULL, FALSE); | |
3728 | lang_reset_memory_regions (); | |
3729 | } | |
3730 | ||
afd7a018 AM |
3731 | for (os = &lang_output_section_statement.head->output_section_statement; |
3732 | os != NULL; | |
3733 | os = os->next) | |
4bd5a393 | 3734 | { |
75ff4589 L |
3735 | asection *output_section; |
3736 | bfd_boolean exclude; | |
4bd5a393 | 3737 | |
66c103b7 | 3738 | if (os->constraint < 0) |
0841712e | 3739 | continue; |
8423293d | 3740 | |
75ff4589 L |
3741 | output_section = os->bfd_section; |
3742 | if (output_section == NULL) | |
8423293d AM |
3743 | continue; |
3744 | ||
32124d5b AM |
3745 | exclude = (output_section->rawsize == 0 |
3746 | && (output_section->flags & SEC_KEEP) == 0 | |
f13a99db | 3747 | && !bfd_section_removed_from_list (link_info.output_bfd, |
32124d5b AM |
3748 | output_section)); |
3749 | ||
3750 | /* Some sections have not yet been sized, notably .gnu.version, | |
3751 | .dynsym, .dynstr and .hash. These all have SEC_LINKER_CREATED | |
3752 | input sections, so don't drop output sections that have such | |
3753 | input sections unless they are also marked SEC_EXCLUDE. */ | |
3754 | if (exclude && output_section->map_head.s != NULL) | |
75ff4589 L |
3755 | { |
3756 | asection *s; | |
8423293d | 3757 | |
32124d5b AM |
3758 | for (s = output_section->map_head.s; s != NULL; s = s->map_head.s) |
3759 | if ((s->flags & SEC_LINKER_CREATED) != 0 | |
3760 | && (s->flags & SEC_EXCLUDE) == 0) | |
e9ee469a AM |
3761 | { |
3762 | exclude = FALSE; | |
3763 | break; | |
3764 | } | |
75ff4589 | 3765 | } |
8423293d | 3766 | |
32124d5b AM |
3767 | /* TODO: Don't just junk map_head.s, turn them into link_orders. */ |
3768 | output_section->map_head.link_order = NULL; | |
3769 | output_section->map_tail.link_order = NULL; | |
3770 | ||
3771 | if (exclude) | |
4bd5a393 | 3772 | { |
e9ee469a AM |
3773 | /* We don't set bfd_section to NULL since bfd_section of the |
3774 | removed output section statement may still be used. */ | |
3d263d86 AM |
3775 | if (!os->section_relative_symbol |
3776 | && !os->update_dot_tree) | |
74541ad4 | 3777 | os->ignored = TRUE; |
e9ee469a | 3778 | output_section->flags |= SEC_EXCLUDE; |
f13a99db AM |
3779 | bfd_section_list_remove (link_info.output_bfd, output_section); |
3780 | link_info.output_bfd->section_count--; | |
4bd5a393 AM |
3781 | } |
3782 | } | |
8423293d AM |
3783 | |
3784 | /* Stop future calls to lang_add_section from messing with map_head | |
3785 | and map_tail link_order fields. */ | |
3786 | stripped_excluded_sections = TRUE; | |
4bd5a393 AM |
3787 | } |
3788 | ||
252b5132 | 3789 | static void |
1579bae1 AM |
3790 | print_output_section_statement |
3791 | (lang_output_section_statement_type *output_section_statement) | |
252b5132 RH |
3792 | { |
3793 | asection *section = output_section_statement->bfd_section; | |
3794 | int len; | |
3795 | ||
3796 | if (output_section_statement != abs_output_section) | |
3797 | { | |
3798 | minfo ("\n%s", output_section_statement->name); | |
3799 | ||
3800 | if (section != NULL) | |
3801 | { | |
3802 | print_dot = section->vma; | |
3803 | ||
3804 | len = strlen (output_section_statement->name); | |
3805 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
3806 | { | |
3807 | print_nl (); | |
3808 | len = 0; | |
3809 | } | |
3810 | while (len < SECTION_NAME_MAP_LENGTH) | |
3811 | { | |
3812 | print_space (); | |
3813 | ++len; | |
3814 | } | |
3815 | ||
eea6121a | 3816 | minfo ("0x%V %W", section->vma, section->size); |
252b5132 | 3817 | |
67f744f3 AM |
3818 | if (section->vma != section->lma) |
3819 | minfo (_(" load address 0x%V"), section->lma); | |
5590fba9 NC |
3820 | |
3821 | if (output_section_statement->update_dot_tree != NULL) | |
3822 | exp_fold_tree (output_section_statement->update_dot_tree, | |
3823 | bfd_abs_section_ptr, &print_dot); | |
252b5132 RH |
3824 | } |
3825 | ||
3826 | print_nl (); | |
3827 | } | |
3828 | ||
3829 | print_statement_list (output_section_statement->children.head, | |
3830 | output_section_statement); | |
3831 | } | |
3832 | ||
3b83e13a NC |
3833 | /* Scan for the use of the destination in the right hand side |
3834 | of an expression. In such cases we will not compute the | |
3835 | correct expression, since the value of DST that is used on | |
3836 | the right hand side will be its final value, not its value | |
3837 | just before this expression is evaluated. */ | |
329c1c86 | 3838 | |
3b83e13a NC |
3839 | static bfd_boolean |
3840 | scan_for_self_assignment (const char * dst, etree_type * rhs) | |
3841 | { | |
3842 | if (rhs == NULL || dst == NULL) | |
3843 | return FALSE; | |
3844 | ||
3845 | switch (rhs->type.node_class) | |
3846 | { | |
3847 | case etree_binary: | |
3848 | return scan_for_self_assignment (dst, rhs->binary.lhs) | |
3849 | || scan_for_self_assignment (dst, rhs->binary.rhs); | |
3850 | ||
3851 | case etree_trinary: | |
3852 | return scan_for_self_assignment (dst, rhs->trinary.lhs) | |
3853 | || scan_for_self_assignment (dst, rhs->trinary.rhs); | |
3854 | ||
3855 | case etree_assign: | |
3856 | case etree_provided: | |
3857 | case etree_provide: | |
3858 | if (strcmp (dst, rhs->assign.dst) == 0) | |
3859 | return TRUE; | |
3860 | return scan_for_self_assignment (dst, rhs->assign.src); | |
3861 | ||
3862 | case etree_unary: | |
3863 | return scan_for_self_assignment (dst, rhs->unary.child); | |
3864 | ||
3865 | case etree_value: | |
3866 | if (rhs->value.str) | |
3867 | return strcmp (dst, rhs->value.str) == 0; | |
3868 | return FALSE; | |
3869 | ||
3870 | case etree_name: | |
3871 | if (rhs->name.name) | |
3872 | return strcmp (dst, rhs->name.name) == 0; | |
3873 | return FALSE; | |
3874 | ||
3875 | default: | |
3876 | break; | |
3877 | } | |
3878 | ||
3879 | return FALSE; | |
3880 | } | |
3881 | ||
3882 | ||
252b5132 | 3883 | static void |
1579bae1 AM |
3884 | print_assignment (lang_assignment_statement_type *assignment, |
3885 | lang_output_section_statement_type *output_section) | |
252b5132 | 3886 | { |
3b83e13a NC |
3887 | unsigned int i; |
3888 | bfd_boolean is_dot; | |
3889 | bfd_boolean computation_is_valid = TRUE; | |
afd7a018 | 3890 | etree_type *tree; |
252b5132 RH |
3891 | |
3892 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
3893 | print_space (); | |
3894 | ||
afd7a018 AM |
3895 | if (assignment->exp->type.node_class == etree_assert) |
3896 | { | |
3b83e13a | 3897 | is_dot = FALSE; |
afd7a018 | 3898 | tree = assignment->exp->assert_s.child; |
3b83e13a | 3899 | computation_is_valid = TRUE; |
afd7a018 AM |
3900 | } |
3901 | else | |
3902 | { | |
3903 | const char *dst = assignment->exp->assign.dst; | |
3b83e13a NC |
3904 | |
3905 | is_dot = (dst[0] == '.' && dst[1] == 0); | |
afd7a018 | 3906 | tree = assignment->exp->assign.src; |
3b83e13a | 3907 | computation_is_valid = is_dot || (scan_for_self_assignment (dst, tree) == FALSE); |
afd7a018 AM |
3908 | } |
3909 | ||
e9ee469a AM |
3910 | exp_fold_tree (tree, output_section->bfd_section, &print_dot); |
3911 | if (expld.result.valid_p) | |
7b17f854 | 3912 | { |
7b17f854 RS |
3913 | bfd_vma value; |
3914 | ||
3b83e13a NC |
3915 | if (computation_is_valid) |
3916 | { | |
e9ee469a | 3917 | value = expld.result.value; |
10dbd1f3 | 3918 | |
e9ee469a AM |
3919 | if (expld.result.section) |
3920 | value += expld.result.section->vma; | |
7b17f854 | 3921 | |
3b83e13a NC |
3922 | minfo ("0x%V", value); |
3923 | if (is_dot) | |
3924 | print_dot = value; | |
3925 | } | |
3926 | else | |
3927 | { | |
3928 | struct bfd_link_hash_entry *h; | |
3929 | ||
3930 | h = bfd_link_hash_lookup (link_info.hash, assignment->exp->assign.dst, | |
3931 | FALSE, FALSE, TRUE); | |
3932 | if (h) | |
3933 | { | |
10dbd1f3 NC |
3934 | value = h->u.def.value; |
3935 | ||
e9ee469a | 3936 | if (expld.result.section) |
a1438fce | 3937 | value += expld.result.section->vma; |
3b83e13a NC |
3938 | |
3939 | minfo ("[0x%V]", value); | |
3940 | } | |
3941 | else | |
3942 | minfo ("[unresolved]"); | |
3943 | } | |
7b17f854 | 3944 | } |
252b5132 RH |
3945 | else |
3946 | { | |
3947 | minfo ("*undef* "); | |
3948 | #ifdef BFD64 | |
3949 | minfo (" "); | |
3950 | #endif | |
3951 | } | |
3952 | ||
3953 | minfo (" "); | |
252b5132 | 3954 | exp_print_tree (assignment->exp); |
252b5132 RH |
3955 | print_nl (); |
3956 | } | |
3957 | ||
3958 | static void | |
1579bae1 | 3959 | print_input_statement (lang_input_statement_type *statm) |
252b5132 | 3960 | { |
967928e9 AM |
3961 | if (statm->filename != NULL |
3962 | && (statm->the_bfd == NULL | |
3963 | || (statm->the_bfd->flags & BFD_LINKER_CREATED) == 0)) | |
906e58ca | 3964 | fprintf (config.map_file, "LOAD %s\n", statm->filename); |
252b5132 RH |
3965 | } |
3966 | ||
3967 | /* Print all symbols defined in a particular section. This is called | |
35835446 | 3968 | via bfd_link_hash_traverse, or by print_all_symbols. */ |
252b5132 | 3969 | |
b34976b6 | 3970 | static bfd_boolean |
1579bae1 | 3971 | print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr) |
252b5132 | 3972 | { |
1e9cc1c2 | 3973 | asection *sec = (asection *) ptr; |
252b5132 RH |
3974 | |
3975 | if ((hash_entry->type == bfd_link_hash_defined | |
3976 | || hash_entry->type == bfd_link_hash_defweak) | |
3977 | && sec == hash_entry->u.def.section) | |
3978 | { | |
3979 | int i; | |
3980 | ||
3981 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
3982 | print_space (); | |
3983 | minfo ("0x%V ", | |
3984 | (hash_entry->u.def.value | |
3985 | + hash_entry->u.def.section->output_offset | |
3986 | + hash_entry->u.def.section->output_section->vma)); | |
3987 | ||
3988 | minfo (" %T\n", hash_entry->root.string); | |
3989 | } | |
3990 | ||
b34976b6 | 3991 | return TRUE; |
252b5132 RH |
3992 | } |
3993 | ||
02688209 TG |
3994 | static int |
3995 | hash_entry_addr_cmp (const void *a, const void *b) | |
3996 | { | |
3997 | const struct bfd_link_hash_entry *l = *(const struct bfd_link_hash_entry **)a; | |
3998 | const struct bfd_link_hash_entry *r = *(const struct bfd_link_hash_entry **)b; | |
3999 | ||
4000 | if (l->u.def.value < r->u.def.value) | |
4001 | return -1; | |
4002 | else if (l->u.def.value > r->u.def.value) | |
4003 | return 1; | |
4004 | else | |
4005 | return 0; | |
4006 | } | |
4007 | ||
35835446 | 4008 | static void |
e0f6802f | 4009 | print_all_symbols (asection *sec) |
35835446 | 4010 | { |
1e9cc1c2 NC |
4011 | struct fat_user_section_struct *ud = |
4012 | (struct fat_user_section_struct *) get_userdata (sec); | |
35835446 | 4013 | struct map_symbol_def *def; |
02688209 TG |
4014 | struct bfd_link_hash_entry **entries; |
4015 | unsigned int i; | |
35835446 | 4016 | |
afd7a018 AM |
4017 | if (!ud) |
4018 | return; | |
4019 | ||
35835446 | 4020 | *ud->map_symbol_def_tail = 0; |
02688209 TG |
4021 | |
4022 | /* Sort the symbols by address. */ | |
1e9cc1c2 NC |
4023 | entries = (struct bfd_link_hash_entry **) |
4024 | obstack_alloc (&map_obstack, ud->map_symbol_def_count * sizeof (*entries)); | |
02688209 TG |
4025 | |
4026 | for (i = 0, def = ud->map_symbol_def_head; def; def = def->next, i++) | |
4027 | entries[i] = def->entry; | |
4028 | ||
4029 | qsort (entries, ud->map_symbol_def_count, sizeof (*entries), | |
4030 | hash_entry_addr_cmp); | |
4031 | ||
4032 | /* Print the symbols. */ | |
4033 | for (i = 0; i < ud->map_symbol_def_count; i++) | |
4034 | print_one_symbol (entries[i], sec); | |
4035 | ||
4036 | obstack_free (&map_obstack, entries); | |
35835446 JR |
4037 | } |
4038 | ||
252b5132 RH |
4039 | /* Print information about an input section to the map file. */ |
4040 | ||
4041 | static void | |
d64703c6 | 4042 | print_input_section (asection *i, bfd_boolean is_discarded) |
252b5132 | 4043 | { |
eea6121a | 4044 | bfd_size_type size = i->size; |
abe6ac95 AM |
4045 | int len; |
4046 | bfd_vma addr; | |
e5caa5e0 AM |
4047 | |
4048 | init_opb (); | |
4d4920ec | 4049 | |
abe6ac95 AM |
4050 | print_space (); |
4051 | minfo ("%s", i->name); | |
252b5132 | 4052 | |
abe6ac95 AM |
4053 | len = 1 + strlen (i->name); |
4054 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
4055 | { | |
4056 | print_nl (); | |
4057 | len = 0; | |
4058 | } | |
4059 | while (len < SECTION_NAME_MAP_LENGTH) | |
4060 | { | |
57ceae94 | 4061 | print_space (); |
abe6ac95 AM |
4062 | ++len; |
4063 | } | |
252b5132 | 4064 | |
f13a99db AM |
4065 | if (i->output_section != NULL |
4066 | && i->output_section->owner == link_info.output_bfd) | |
abe6ac95 AM |
4067 | addr = i->output_section->vma + i->output_offset; |
4068 | else | |
4069 | { | |
4070 | addr = print_dot; | |
d64703c6 TG |
4071 | if (!is_discarded) |
4072 | size = 0; | |
abe6ac95 | 4073 | } |
252b5132 | 4074 | |
abe6ac95 | 4075 | minfo ("0x%V %W %B\n", addr, TO_ADDR (size), i->owner); |
252b5132 | 4076 | |
abe6ac95 AM |
4077 | if (size != i->rawsize && i->rawsize != 0) |
4078 | { | |
4079 | len = SECTION_NAME_MAP_LENGTH + 3; | |
252b5132 | 4080 | #ifdef BFD64 |
abe6ac95 | 4081 | len += 16; |
252b5132 | 4082 | #else |
abe6ac95 | 4083 | len += 8; |
252b5132 | 4084 | #endif |
abe6ac95 AM |
4085 | while (len > 0) |
4086 | { | |
4087 | print_space (); | |
4088 | --len; | |
57ceae94 AM |
4089 | } |
4090 | ||
abe6ac95 AM |
4091 | minfo (_("%W (size before relaxing)\n"), i->rawsize); |
4092 | } | |
252b5132 | 4093 | |
f13a99db AM |
4094 | if (i->output_section != NULL |
4095 | && i->output_section->owner == link_info.output_bfd) | |
abe6ac95 | 4096 | { |
c0f00686 | 4097 | if (link_info.reduce_memory_overheads) |
abe6ac95 AM |
4098 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, i); |
4099 | else | |
4100 | print_all_symbols (i); | |
4101 | ||
5590fba9 NC |
4102 | /* Update print_dot, but make sure that we do not move it |
4103 | backwards - this could happen if we have overlays and a | |
4104 | later overlay is shorter than an earier one. */ | |
4105 | if (addr + TO_ADDR (size) > print_dot) | |
4106 | print_dot = addr + TO_ADDR (size); | |
252b5132 RH |
4107 | } |
4108 | } | |
4109 | ||
4110 | static void | |
1579bae1 | 4111 | print_fill_statement (lang_fill_statement_type *fill) |
252b5132 | 4112 | { |
2c382fb6 AM |
4113 | size_t size; |
4114 | unsigned char *p; | |
4115 | fputs (" FILL mask 0x", config.map_file); | |
4116 | for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--) | |
4117 | fprintf (config.map_file, "%02x", *p); | |
4118 | fputs ("\n", config.map_file); | |
252b5132 RH |
4119 | } |
4120 | ||
4121 | static void | |
1579bae1 | 4122 | print_data_statement (lang_data_statement_type *data) |
252b5132 RH |
4123 | { |
4124 | int i; | |
4125 | bfd_vma addr; | |
4126 | bfd_size_type size; | |
4127 | const char *name; | |
4128 | ||
e5caa5e0 | 4129 | init_opb (); |
252b5132 RH |
4130 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
4131 | print_space (); | |
4132 | ||
7fabd029 | 4133 | addr = data->output_offset; |
252b5132 RH |
4134 | if (data->output_section != NULL) |
4135 | addr += data->output_section->vma; | |
4136 | ||
4137 | switch (data->type) | |
4138 | { | |
4139 | default: | |
4140 | abort (); | |
4141 | case BYTE: | |
4142 | size = BYTE_SIZE; | |
4143 | name = "BYTE"; | |
4144 | break; | |
4145 | case SHORT: | |
4146 | size = SHORT_SIZE; | |
4147 | name = "SHORT"; | |
4148 | break; | |
4149 | case LONG: | |
4150 | size = LONG_SIZE; | |
4151 | name = "LONG"; | |
4152 | break; | |
4153 | case QUAD: | |
4154 | size = QUAD_SIZE; | |
4155 | name = "QUAD"; | |
4156 | break; | |
4157 | case SQUAD: | |
4158 | size = QUAD_SIZE; | |
4159 | name = "SQUAD"; | |
4160 | break; | |
4161 | } | |
4162 | ||
4163 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); | |
4164 | ||
4165 | if (data->exp->type.node_class != etree_value) | |
4166 | { | |
4167 | print_space (); | |
4168 | exp_print_tree (data->exp); | |
4169 | } | |
4170 | ||
4171 | print_nl (); | |
4172 | ||
e5caa5e0 | 4173 | print_dot = addr + TO_ADDR (size); |
252b5132 RH |
4174 | } |
4175 | ||
4176 | /* Print an address statement. These are generated by options like | |
4177 | -Ttext. */ | |
4178 | ||
4179 | static void | |
1579bae1 | 4180 | print_address_statement (lang_address_statement_type *address) |
252b5132 RH |
4181 | { |
4182 | minfo (_("Address of section %s set to "), address->section_name); | |
4183 | exp_print_tree (address->address); | |
4184 | print_nl (); | |
4185 | } | |
4186 | ||
4187 | /* Print a reloc statement. */ | |
4188 | ||
4189 | static void | |
1579bae1 | 4190 | print_reloc_statement (lang_reloc_statement_type *reloc) |
252b5132 RH |
4191 | { |
4192 | int i; | |
4193 | bfd_vma addr; | |
4194 | bfd_size_type size; | |
4195 | ||
e5caa5e0 | 4196 | init_opb (); |
252b5132 RH |
4197 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
4198 | print_space (); | |
4199 | ||
7fabd029 | 4200 | addr = reloc->output_offset; |
252b5132 RH |
4201 | if (reloc->output_section != NULL) |
4202 | addr += reloc->output_section->vma; | |
4203 | ||
4204 | size = bfd_get_reloc_size (reloc->howto); | |
4205 | ||
4206 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); | |
4207 | ||
4208 | if (reloc->name != NULL) | |
4209 | minfo ("%s+", reloc->name); | |
4210 | else | |
4211 | minfo ("%s+", reloc->section->name); | |
4212 | ||
4213 | exp_print_tree (reloc->addend_exp); | |
4214 | ||
4215 | print_nl (); | |
4216 | ||
e5caa5e0 | 4217 | print_dot = addr + TO_ADDR (size); |
5f992e62 | 4218 | } |
252b5132 RH |
4219 | |
4220 | static void | |
1579bae1 | 4221 | print_padding_statement (lang_padding_statement_type *s) |
252b5132 RH |
4222 | { |
4223 | int len; | |
4224 | bfd_vma addr; | |
4225 | ||
e5caa5e0 | 4226 | init_opb (); |
252b5132 RH |
4227 | minfo (" *fill*"); |
4228 | ||
4229 | len = sizeof " *fill*" - 1; | |
4230 | while (len < SECTION_NAME_MAP_LENGTH) | |
4231 | { | |
4232 | print_space (); | |
4233 | ++len; | |
4234 | } | |
4235 | ||
4236 | addr = s->output_offset; | |
4237 | if (s->output_section != NULL) | |
4238 | addr += s->output_section->vma; | |
5f9b8920 | 4239 | minfo ("0x%V %W ", addr, (bfd_vma) s->size); |
252b5132 | 4240 | |
2c382fb6 AM |
4241 | if (s->fill->size != 0) |
4242 | { | |
4243 | size_t size; | |
4244 | unsigned char *p; | |
4245 | for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--) | |
4246 | fprintf (config.map_file, "%02x", *p); | |
4247 | } | |
252b5132 RH |
4248 | |
4249 | print_nl (); | |
4250 | ||
e5caa5e0 | 4251 | print_dot = addr + TO_ADDR (s->size); |
252b5132 RH |
4252 | } |
4253 | ||
4254 | static void | |
1579bae1 AM |
4255 | print_wild_statement (lang_wild_statement_type *w, |
4256 | lang_output_section_statement_type *os) | |
252b5132 | 4257 | { |
b6bf44ba AM |
4258 | struct wildcard_list *sec; |
4259 | ||
252b5132 RH |
4260 | print_space (); |
4261 | ||
4262 | if (w->filenames_sorted) | |
4263 | minfo ("SORT("); | |
08da4cac | 4264 | if (w->filename != NULL) |
252b5132 RH |
4265 | minfo ("%s", w->filename); |
4266 | else | |
4267 | minfo ("*"); | |
4268 | if (w->filenames_sorted) | |
4269 | minfo (")"); | |
4270 | ||
4271 | minfo ("("); | |
b6bf44ba AM |
4272 | for (sec = w->section_list; sec; sec = sec->next) |
4273 | { | |
4274 | if (sec->spec.sorted) | |
4275 | minfo ("SORT("); | |
4276 | if (sec->spec.exclude_name_list != NULL) | |
4277 | { | |
4278 | name_list *tmp; | |
34786259 | 4279 | minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name); |
b6bf44ba | 4280 | for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next) |
34786259 AM |
4281 | minfo (" %s", tmp->name); |
4282 | minfo (") "); | |
b6bf44ba AM |
4283 | } |
4284 | if (sec->spec.name != NULL) | |
4285 | minfo ("%s", sec->spec.name); | |
4286 | else | |
4287 | minfo ("*"); | |
4288 | if (sec->spec.sorted) | |
4289 | minfo (")"); | |
34786259 AM |
4290 | if (sec->next) |
4291 | minfo (" "); | |
b6bf44ba | 4292 | } |
252b5132 RH |
4293 | minfo (")"); |
4294 | ||
4295 | print_nl (); | |
4296 | ||
4297 | print_statement_list (w->children.head, os); | |
4298 | } | |
4299 | ||
4300 | /* Print a group statement. */ | |
4301 | ||
4302 | static void | |
1579bae1 AM |
4303 | print_group (lang_group_statement_type *s, |
4304 | lang_output_section_statement_type *os) | |
252b5132 RH |
4305 | { |
4306 | fprintf (config.map_file, "START GROUP\n"); | |
4307 | print_statement_list (s->children.head, os); | |
4308 | fprintf (config.map_file, "END GROUP\n"); | |
4309 | } | |
4310 | ||
4311 | /* Print the list of statements in S. | |
4312 | This can be called for any statement type. */ | |
4313 | ||
4314 | static void | |
1579bae1 AM |
4315 | print_statement_list (lang_statement_union_type *s, |
4316 | lang_output_section_statement_type *os) | |
252b5132 RH |
4317 | { |
4318 | while (s != NULL) | |
4319 | { | |
4320 | print_statement (s, os); | |
bba1a0c0 | 4321 | s = s->header.next; |
252b5132 RH |
4322 | } |
4323 | } | |
4324 | ||
4325 | /* Print the first statement in statement list S. | |
4326 | This can be called for any statement type. */ | |
4327 | ||
4328 | static void | |
1579bae1 AM |
4329 | print_statement (lang_statement_union_type *s, |
4330 | lang_output_section_statement_type *os) | |
252b5132 RH |
4331 | { |
4332 | switch (s->header.type) | |
4333 | { | |
4334 | default: | |
4335 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
4336 | FAIL (); | |
4337 | break; | |
4338 | case lang_constructors_statement_enum: | |
4339 | if (constructor_list.head != NULL) | |
4340 | { | |
4341 | if (constructors_sorted) | |
4342 | minfo (" SORT (CONSTRUCTORS)\n"); | |
4343 | else | |
4344 | minfo (" CONSTRUCTORS\n"); | |
4345 | print_statement_list (constructor_list.head, os); | |
4346 | } | |
4347 | break; | |
4348 | case lang_wild_statement_enum: | |
4349 | print_wild_statement (&s->wild_statement, os); | |
4350 | break; | |
4351 | case lang_address_statement_enum: | |
4352 | print_address_statement (&s->address_statement); | |
4353 | break; | |
4354 | case lang_object_symbols_statement_enum: | |
4355 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
4356 | break; | |
4357 | case lang_fill_statement_enum: | |
4358 | print_fill_statement (&s->fill_statement); | |
4359 | break; | |
4360 | case lang_data_statement_enum: | |
4361 | print_data_statement (&s->data_statement); | |
4362 | break; | |
4363 | case lang_reloc_statement_enum: | |
4364 | print_reloc_statement (&s->reloc_statement); | |
4365 | break; | |
4366 | case lang_input_section_enum: | |
d64703c6 | 4367 | print_input_section (s->input_section.section, FALSE); |
252b5132 RH |
4368 | break; |
4369 | case lang_padding_statement_enum: | |
4370 | print_padding_statement (&s->padding_statement); | |
4371 | break; | |
4372 | case lang_output_section_statement_enum: | |
4373 | print_output_section_statement (&s->output_section_statement); | |
4374 | break; | |
4375 | case lang_assignment_statement_enum: | |
4376 | print_assignment (&s->assignment_statement, os); | |
4377 | break; | |
4378 | case lang_target_statement_enum: | |
4379 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
4380 | break; | |
4381 | case lang_output_statement_enum: | |
4382 | minfo ("OUTPUT(%s", s->output_statement.name); | |
4383 | if (output_target != NULL) | |
4384 | minfo (" %s", output_target); | |
4385 | minfo (")\n"); | |
4386 | break; | |
4387 | case lang_input_statement_enum: | |
4388 | print_input_statement (&s->input_statement); | |
4389 | break; | |
4390 | case lang_group_statement_enum: | |
4391 | print_group (&s->group_statement, os); | |
4392 | break; | |
53d25da6 AM |
4393 | case lang_insert_statement_enum: |
4394 | minfo ("INSERT %s %s\n", | |
4395 | s->insert_statement.is_before ? "BEFORE" : "AFTER", | |
4396 | s->insert_statement.where); | |
4397 | break; | |
252b5132 RH |
4398 | } |
4399 | } | |
4400 | ||
4401 | static void | |
1579bae1 | 4402 | print_statements (void) |
252b5132 RH |
4403 | { |
4404 | print_statement_list (statement_list.head, abs_output_section); | |
4405 | } | |
4406 | ||
4407 | /* Print the first N statements in statement list S to STDERR. | |
4408 | If N == 0, nothing is printed. | |
4409 | If N < 0, the entire list is printed. | |
4410 | Intended to be called from GDB. */ | |
4411 | ||
4412 | void | |
1579bae1 | 4413 | dprint_statement (lang_statement_union_type *s, int n) |
252b5132 RH |
4414 | { |
4415 | FILE *map_save = config.map_file; | |
4416 | ||
4417 | config.map_file = stderr; | |
4418 | ||
4419 | if (n < 0) | |
4420 | print_statement_list (s, abs_output_section); | |
4421 | else | |
4422 | { | |
4423 | while (s && --n >= 0) | |
4424 | { | |
4425 | print_statement (s, abs_output_section); | |
bba1a0c0 | 4426 | s = s->header.next; |
252b5132 RH |
4427 | } |
4428 | } | |
4429 | ||
4430 | config.map_file = map_save; | |
4431 | } | |
4432 | ||
b3327aad | 4433 | static void |
1579bae1 AM |
4434 | insert_pad (lang_statement_union_type **ptr, |
4435 | fill_type *fill, | |
4436 | unsigned int alignment_needed, | |
4437 | asection *output_section, | |
4438 | bfd_vma dot) | |
252b5132 | 4439 | { |
2c382fb6 | 4440 | static fill_type zero_fill = { 1, { 0 } }; |
e9ee469a | 4441 | lang_statement_union_type *pad = NULL; |
b3327aad | 4442 | |
e9ee469a AM |
4443 | if (ptr != &statement_list.head) |
4444 | pad = ((lang_statement_union_type *) | |
4445 | ((char *) ptr - offsetof (lang_statement_union_type, header.next))); | |
4446 | if (pad != NULL | |
4447 | && pad->header.type == lang_padding_statement_enum | |
4448 | && pad->padding_statement.output_section == output_section) | |
4449 | { | |
4450 | /* Use the existing pad statement. */ | |
4451 | } | |
4452 | else if ((pad = *ptr) != NULL | |
906e58ca NC |
4453 | && pad->header.type == lang_padding_statement_enum |
4454 | && pad->padding_statement.output_section == output_section) | |
252b5132 | 4455 | { |
e9ee469a | 4456 | /* Use the existing pad statement. */ |
252b5132 | 4457 | } |
b3327aad | 4458 | else |
252b5132 | 4459 | { |
b3327aad | 4460 | /* Make a new padding statement, linked into existing chain. */ |
1e9cc1c2 NC |
4461 | pad = (lang_statement_union_type *) |
4462 | stat_alloc (sizeof (lang_padding_statement_type)); | |
b3327aad AM |
4463 | pad->header.next = *ptr; |
4464 | *ptr = pad; | |
4465 | pad->header.type = lang_padding_statement_enum; | |
4466 | pad->padding_statement.output_section = output_section; | |
1579bae1 | 4467 | if (fill == NULL) |
2c382fb6 | 4468 | fill = &zero_fill; |
b3327aad | 4469 | pad->padding_statement.fill = fill; |
252b5132 | 4470 | } |
b3327aad AM |
4471 | pad->padding_statement.output_offset = dot - output_section->vma; |
4472 | pad->padding_statement.size = alignment_needed; | |
eea6121a | 4473 | output_section->size += alignment_needed; |
252b5132 RH |
4474 | } |
4475 | ||
08da4cac KH |
4476 | /* Work out how much this section will move the dot point. */ |
4477 | ||
252b5132 | 4478 | static bfd_vma |
6feb9908 AM |
4479 | size_input_section |
4480 | (lang_statement_union_type **this_ptr, | |
4481 | lang_output_section_statement_type *output_section_statement, | |
4482 | fill_type *fill, | |
4483 | bfd_vma dot) | |
252b5132 RH |
4484 | { |
4485 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
4486 | asection *i = is->section; | |
4487 | ||
7b986e99 AM |
4488 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag |
4489 | && (i->flags & SEC_EXCLUDE) == 0) | |
252b5132 | 4490 | { |
b3327aad AM |
4491 | unsigned int alignment_needed; |
4492 | asection *o; | |
4493 | ||
4494 | /* Align this section first to the input sections requirement, | |
4495 | then to the output section's requirement. If this alignment | |
4496 | is greater than any seen before, then record it too. Perform | |
4497 | the alignment by inserting a magic 'padding' statement. */ | |
4498 | ||
252b5132 | 4499 | if (output_section_statement->subsection_alignment != -1) |
b3327aad AM |
4500 | i->alignment_power = output_section_statement->subsection_alignment; |
4501 | ||
4502 | o = output_section_statement->bfd_section; | |
4503 | if (o->alignment_power < i->alignment_power) | |
4504 | o->alignment_power = i->alignment_power; | |
252b5132 | 4505 | |
b3327aad AM |
4506 | alignment_needed = align_power (dot, i->alignment_power) - dot; |
4507 | ||
4508 | if (alignment_needed != 0) | |
4509 | { | |
e5caa5e0 | 4510 | insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot); |
b3327aad AM |
4511 | dot += alignment_needed; |
4512 | } | |
252b5132 | 4513 | |
08da4cac | 4514 | /* Remember where in the output section this input section goes. */ |
252b5132 | 4515 | |
b3327aad | 4516 | i->output_offset = dot - o->vma; |
252b5132 | 4517 | |
08da4cac | 4518 | /* Mark how big the output section must be to contain this now. */ |
eea6121a AM |
4519 | dot += TO_ADDR (i->size); |
4520 | o->size = TO_SIZE (dot - o->vma); | |
252b5132 RH |
4521 | } |
4522 | else | |
4523 | { | |
4524 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; | |
4525 | } | |
4526 | ||
4527 | return dot; | |
4528 | } | |
4529 | ||
5daa8fe7 L |
4530 | static int |
4531 | sort_sections_by_lma (const void *arg1, const void *arg2) | |
4532 | { | |
4533 | const asection *sec1 = *(const asection **) arg1; | |
4534 | const asection *sec2 = *(const asection **) arg2; | |
4535 | ||
4536 | if (bfd_section_lma (sec1->owner, sec1) | |
4537 | < bfd_section_lma (sec2->owner, sec2)) | |
4538 | return -1; | |
4539 | else if (bfd_section_lma (sec1->owner, sec1) | |
4540 | > bfd_section_lma (sec2->owner, sec2)) | |
4541 | return 1; | |
7f6a71ff JM |
4542 | else if (sec1->id < sec2->id) |
4543 | return -1; | |
4544 | else if (sec1->id > sec2->id) | |
4545 | return 1; | |
5daa8fe7 L |
4546 | |
4547 | return 0; | |
4548 | } | |
4549 | ||
eea6121a | 4550 | #define IGNORE_SECTION(s) \ |
afd7a018 AM |
4551 | ((s->flags & SEC_NEVER_LOAD) != 0 \ |
4552 | || (s->flags & SEC_ALLOC) == 0 \ | |
4553 | || ((s->flags & SEC_THREAD_LOCAL) != 0 \ | |
de7f8cc8 | 4554 | && (s->flags & SEC_LOAD) == 0)) |
d1778b88 | 4555 | |
252b5132 | 4556 | /* Check to see if any allocated sections overlap with other allocated |
afd7a018 | 4557 | sections. This can happen if a linker script specifies the output |
20e56351 DJ |
4558 | section addresses of the two sections. Also check whether any memory |
4559 | region has overflowed. */ | |
08da4cac | 4560 | |
252b5132 | 4561 | static void |
1579bae1 | 4562 | lang_check_section_addresses (void) |
252b5132 | 4563 | { |
f4427a75 | 4564 | asection *s, *p; |
5daa8fe7 L |
4565 | asection **sections, **spp; |
4566 | unsigned int count; | |
4567 | bfd_vma s_start; | |
4568 | bfd_vma s_end; | |
f4427a75 AM |
4569 | bfd_vma p_start; |
4570 | bfd_vma p_end; | |
5daa8fe7 | 4571 | bfd_size_type amt; |
20e56351 | 4572 | lang_memory_region_type *m; |
5daa8fe7 | 4573 | |
f13a99db | 4574 | if (bfd_count_sections (link_info.output_bfd) <= 1) |
5daa8fe7 L |
4575 | return; |
4576 | ||
f13a99db | 4577 | amt = bfd_count_sections (link_info.output_bfd) * sizeof (asection *); |
1e9cc1c2 | 4578 | sections = (asection **) xmalloc (amt); |
252b5132 RH |
4579 | |
4580 | /* Scan all sections in the output list. */ | |
5daa8fe7 | 4581 | count = 0; |
f13a99db | 4582 | for (s = link_info.output_bfd->sections; s != NULL; s = s->next) |
33275c22 | 4583 | { |
5daa8fe7 | 4584 | /* Only consider loadable sections with real contents. */ |
e50d6125 AM |
4585 | if ((s->flags & SEC_NEVER_LOAD) |
4586 | || !(s->flags & SEC_LOAD) | |
4587 | || !(s->flags & SEC_ALLOC) | |
ec6d26be | 4588 | || s->size == 0) |
33275c22 | 4589 | continue; |
5f992e62 | 4590 | |
5daa8fe7 L |
4591 | sections[count] = s; |
4592 | count++; | |
4593 | } | |
329c1c86 | 4594 | |
5daa8fe7 L |
4595 | if (count <= 1) |
4596 | return; | |
5f992e62 | 4597 | |
5daa8fe7 L |
4598 | qsort (sections, (size_t) count, sizeof (asection *), |
4599 | sort_sections_by_lma); | |
5f992e62 | 4600 | |
5daa8fe7 L |
4601 | spp = sections; |
4602 | s = *spp++; | |
f4427a75 | 4603 | s_start = s->lma; |
5daa8fe7 L |
4604 | s_end = s_start + TO_ADDR (s->size) - 1; |
4605 | for (count--; count; count--) | |
4606 | { | |
4607 | /* We must check the sections' LMA addresses not their VMA | |
4608 | addresses because overlay sections can have overlapping VMAs | |
4609 | but they must have distinct LMAs. */ | |
f4427a75 AM |
4610 | p = s; |
4611 | p_start = s_start; | |
4612 | p_end = s_end; | |
5daa8fe7 | 4613 | s = *spp++; |
f4427a75 | 4614 | s_start = s->lma; |
5daa8fe7 | 4615 | s_end = s_start + TO_ADDR (s->size) - 1; |
5f992e62 | 4616 | |
f4427a75 AM |
4617 | /* Look for an overlap. We have sorted sections by lma, so we |
4618 | know that s_start >= p_start. Besides the obvious case of | |
4619 | overlap when the current section starts before the previous | |
4620 | one ends, we also must have overlap if the previous section | |
4621 | wraps around the address space. */ | |
4622 | if (s_start <= p_end | |
4623 | || p_end < p_start) | |
ec6d26be | 4624 | einfo (_("%X%P: section %s loaded at [%V,%V] overlaps section %s loaded at [%V,%V]\n"), |
f4427a75 | 4625 | s->name, s_start, s_end, p->name, p_start, p_end); |
33275c22 | 4626 | } |
5daa8fe7 L |
4627 | |
4628 | free (sections); | |
20e56351 DJ |
4629 | |
4630 | /* If any memory region has overflowed, report by how much. | |
4631 | We do not issue this diagnostic for regions that had sections | |
4632 | explicitly placed outside their bounds; os_region_check's | |
4633 | diagnostics are adequate for that case. | |
4634 | ||
4635 | FIXME: It is conceivable that m->current - (m->origin + m->length) | |
4636 | might overflow a 32-bit integer. There is, alas, no way to print | |
4637 | a bfd_vma quantity in decimal. */ | |
4638 | for (m = lang_memory_region_list; m; m = m->next) | |
4639 | if (m->had_full_message) | |
4a93e180 NC |
4640 | einfo (_("%X%P: region `%s' overflowed by %ld bytes\n"), |
4641 | m->name_list.name, (long)(m->current - (m->origin + m->length))); | |
20e56351 | 4642 | |
252b5132 RH |
4643 | } |
4644 | ||
562d3460 TW |
4645 | /* Make sure the new address is within the region. We explicitly permit the |
4646 | current address to be at the exact end of the region when the address is | |
4647 | non-zero, in case the region is at the end of addressable memory and the | |
5f992e62 | 4648 | calculation wraps around. */ |
562d3460 TW |
4649 | |
4650 | static void | |
1579bae1 | 4651 | os_region_check (lang_output_section_statement_type *os, |
6bdafbeb | 4652 | lang_memory_region_type *region, |
1579bae1 | 4653 | etree_type *tree, |
91d6fa6a | 4654 | bfd_vma rbase) |
562d3460 TW |
4655 | { |
4656 | if ((region->current < region->origin | |
4657 | || (region->current - region->origin > region->length)) | |
4658 | && ((region->current != region->origin + region->length) | |
91d6fa6a | 4659 | || rbase == 0)) |
562d3460 | 4660 | { |
1579bae1 | 4661 | if (tree != NULL) |
b7a26f91 | 4662 | { |
4a93e180 NC |
4663 | einfo (_("%X%P: address 0x%v of %B section `%s'" |
4664 | " is not within region `%s'\n"), | |
b7a26f91 KH |
4665 | region->current, |
4666 | os->bfd_section->owner, | |
4667 | os->bfd_section->name, | |
4a93e180 | 4668 | region->name_list.name); |
b7a26f91 | 4669 | } |
20e56351 | 4670 | else if (!region->had_full_message) |
b7a26f91 | 4671 | { |
20e56351 DJ |
4672 | region->had_full_message = TRUE; |
4673 | ||
4a93e180 | 4674 | einfo (_("%X%P: %B section `%s' will not fit in region `%s'\n"), |
b7a26f91 | 4675 | os->bfd_section->owner, |
20e56351 | 4676 | os->bfd_section->name, |
4a93e180 | 4677 | region->name_list.name); |
b7a26f91 | 4678 | } |
562d3460 TW |
4679 | } |
4680 | } | |
4681 | ||
252b5132 RH |
4682 | /* Set the sizes for all the output sections. */ |
4683 | ||
2d20f7bf | 4684 | static bfd_vma |
1579bae1 | 4685 | lang_size_sections_1 |
e535e147 | 4686 | (lang_statement_union_type **prev, |
1579bae1 | 4687 | lang_output_section_statement_type *output_section_statement, |
1579bae1 AM |
4688 | fill_type *fill, |
4689 | bfd_vma dot, | |
4690 | bfd_boolean *relax, | |
4691 | bfd_boolean check_regions) | |
252b5132 | 4692 | { |
e535e147 AM |
4693 | lang_statement_union_type *s; |
4694 | ||
252b5132 | 4695 | /* Size up the sections from their constituent parts. */ |
e535e147 | 4696 | for (s = *prev; s != NULL; s = s->header.next) |
252b5132 RH |
4697 | { |
4698 | switch (s->header.type) | |
4699 | { | |
4700 | case lang_output_section_statement_enum: | |
4701 | { | |
e9ee469a | 4702 | bfd_vma newdot, after; |
d1778b88 | 4703 | lang_output_section_statement_type *os; |
cde9e0be | 4704 | lang_memory_region_type *r; |
252b5132 | 4705 | |
d1778b88 | 4706 | os = &s->output_section_statement; |
fd68d03d AM |
4707 | /* FIXME: We shouldn't need to zero section vmas for ld -r |
4708 | here, in lang_insert_orphan, or in the default linker scripts. | |
4709 | This is covering for coff backend linker bugs. See PR6945. */ | |
4710 | if (os->addr_tree == NULL | |
4711 | && link_info.relocatable | |
4712 | && (bfd_get_flavour (link_info.output_bfd) | |
4713 | == bfd_target_coff_flavour)) | |
eceda120 | 4714 | os->addr_tree = exp_intop (0); |
a5df8c84 AM |
4715 | if (os->addr_tree != NULL) |
4716 | { | |
cde9e0be | 4717 | os->processed_vma = FALSE; |
a5df8c84 | 4718 | exp_fold_tree (os->addr_tree, bfd_abs_section_ptr, &dot); |
a5df8c84 | 4719 | |
3bf9618b AM |
4720 | if (expld.result.valid_p) |
4721 | dot = expld.result.value + expld.result.section->vma; | |
4722 | else if (expld.phase != lang_mark_phase_enum) | |
a5df8c84 AM |
4723 | einfo (_("%F%S: non constant or forward reference" |
4724 | " address expression for section %s\n"), | |
4725 | os->name); | |
a5df8c84 AM |
4726 | } |
4727 | ||
e9ee469a | 4728 | if (os->bfd_section == NULL) |
75ff4589 | 4729 | /* This section was removed or never actually created. */ |
252b5132 RH |
4730 | break; |
4731 | ||
4732 | /* If this is a COFF shared library section, use the size and | |
4733 | address from the input section. FIXME: This is COFF | |
4734 | specific; it would be cleaner if there were some other way | |
4735 | to do this, but nothing simple comes to mind. */ | |
f13a99db AM |
4736 | if (((bfd_get_flavour (link_info.output_bfd) |
4737 | == bfd_target_ecoff_flavour) | |
4738 | || (bfd_get_flavour (link_info.output_bfd) | |
4739 | == bfd_target_coff_flavour)) | |
ebe372c1 | 4740 | && (os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) |
252b5132 | 4741 | { |
08da4cac | 4742 | asection *input; |
252b5132 RH |
4743 | |
4744 | if (os->children.head == NULL | |
bba1a0c0 | 4745 | || os->children.head->header.next != NULL |
6feb9908 AM |
4746 | || (os->children.head->header.type |
4747 | != lang_input_section_enum)) | |
4748 | einfo (_("%P%X: Internal error on COFF shared library" | |
4749 | " section %s\n"), os->name); | |
252b5132 RH |
4750 | |
4751 | input = os->children.head->input_section.section; | |
4752 | bfd_set_section_vma (os->bfd_section->owner, | |
4753 | os->bfd_section, | |
4754 | bfd_section_vma (input->owner, input)); | |
eea6121a | 4755 | os->bfd_section->size = input->size; |
252b5132 RH |
4756 | break; |
4757 | } | |
4758 | ||
a5df8c84 | 4759 | newdot = dot; |
252b5132 RH |
4760 | if (bfd_is_abs_section (os->bfd_section)) |
4761 | { | |
4762 | /* No matter what happens, an abs section starts at zero. */ | |
4763 | ASSERT (os->bfd_section->vma == 0); | |
4764 | } | |
4765 | else | |
4766 | { | |
94b50910 | 4767 | int align; |
7270c5ed | 4768 | |
1579bae1 | 4769 | if (os->addr_tree == NULL) |
252b5132 RH |
4770 | { |
4771 | /* No address specified for this section, get one | |
4772 | from the region specification. */ | |
1579bae1 | 4773 | if (os->region == NULL |
6feb9908 | 4774 | || ((os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)) |
4a93e180 NC |
4775 | && os->region->name_list.name[0] == '*' |
4776 | && strcmp (os->region->name_list.name, | |
6feb9908 | 4777 | DEFAULT_MEMORY_REGION) == 0)) |
252b5132 RH |
4778 | { |
4779 | os->region = lang_memory_default (os->bfd_section); | |
4780 | } | |
4781 | ||
4782 | /* If a loadable section is using the default memory | |
4783 | region, and some non default memory regions were | |
66184979 | 4784 | defined, issue an error message. */ |
f0636a44 AM |
4785 | if (!os->ignored |
4786 | && !IGNORE_SECTION (os->bfd_section) | |
1049f94e | 4787 | && ! link_info.relocatable |
cf888e70 | 4788 | && check_regions |
4a93e180 | 4789 | && strcmp (os->region->name_list.name, |
6feb9908 | 4790 | DEFAULT_MEMORY_REGION) == 0 |
252b5132 | 4791 | && lang_memory_region_list != NULL |
4a93e180 | 4792 | && (strcmp (lang_memory_region_list->name_list.name, |
a747ee4d | 4793 | DEFAULT_MEMORY_REGION) != 0 |
e9ee469a AM |
4794 | || lang_memory_region_list->next != NULL) |
4795 | && expld.phase != lang_mark_phase_enum) | |
66184979 NC |
4796 | { |
4797 | /* By default this is an error rather than just a | |
4798 | warning because if we allocate the section to the | |
4799 | default memory region we can end up creating an | |
07f3b6ad KH |
4800 | excessively large binary, or even seg faulting when |
4801 | attempting to perform a negative seek. See | |
6feb9908 | 4802 | sources.redhat.com/ml/binutils/2003-04/msg00423.html |
66184979 NC |
4803 | for an example of this. This behaviour can be |
4804 | overridden by the using the --no-check-sections | |
4805 | switch. */ | |
4806 | if (command_line.check_section_addresses) | |
6feb9908 AM |
4807 | einfo (_("%P%F: error: no memory region specified" |
4808 | " for loadable section `%s'\n"), | |
f13a99db | 4809 | bfd_get_section_name (link_info.output_bfd, |
66184979 NC |
4810 | os->bfd_section)); |
4811 | else | |
6feb9908 AM |
4812 | einfo (_("%P: warning: no memory region specified" |
4813 | " for loadable section `%s'\n"), | |
f13a99db | 4814 | bfd_get_section_name (link_info.output_bfd, |
66184979 NC |
4815 | os->bfd_section)); |
4816 | } | |
252b5132 | 4817 | |
e9ee469a | 4818 | newdot = os->region->current; |
94b50910 | 4819 | align = os->bfd_section->alignment_power; |
252b5132 | 4820 | } |
94b50910 AM |
4821 | else |
4822 | align = os->section_alignment; | |
5f992e62 | 4823 | |
7270c5ed | 4824 | /* Align to what the section needs. */ |
94b50910 AM |
4825 | if (align > 0) |
4826 | { | |
4827 | bfd_vma savedot = newdot; | |
4828 | newdot = align_power (newdot, align); | |
252b5132 | 4829 | |
94b50910 AM |
4830 | if (newdot != savedot |
4831 | && (config.warn_section_align | |
4832 | || os->addr_tree != NULL) | |
4833 | && expld.phase != lang_mark_phase_enum) | |
4834 | einfo (_("%P: warning: changing start of section" | |
4835 | " %s by %lu bytes\n"), | |
4836 | os->name, (unsigned long) (newdot - savedot)); | |
4837 | } | |
252b5132 | 4838 | |
eceda120 | 4839 | bfd_set_section_vma (0, os->bfd_section, newdot); |
5f992e62 | 4840 | |
252b5132 RH |
4841 | os->bfd_section->output_offset = 0; |
4842 | } | |
4843 | ||
e535e147 | 4844 | lang_size_sections_1 (&os->children.head, os, |
e9ee469a AM |
4845 | os->fill, newdot, relax, check_regions); |
4846 | ||
cde9e0be | 4847 | os->processed_vma = TRUE; |
e9ee469a AM |
4848 | |
4849 | if (bfd_is_abs_section (os->bfd_section) || os->ignored) | |
2f475487 AM |
4850 | /* Except for some special linker created sections, |
4851 | no output section should change from zero size | |
4852 | after strip_excluded_output_sections. A non-zero | |
4853 | size on an ignored section indicates that some | |
4854 | input section was not sized early enough. */ | |
4855 | ASSERT (os->bfd_section->size == 0); | |
cde9e0be | 4856 | else |
e9ee469a | 4857 | { |
cde9e0be AM |
4858 | dot = os->bfd_section->vma; |
4859 | ||
4860 | /* Put the section within the requested block size, or | |
4861 | align at the block boundary. */ | |
4862 | after = ((dot | |
4863 | + TO_ADDR (os->bfd_section->size) | |
4864 | + os->block_value - 1) | |
4865 | & - (bfd_vma) os->block_value); | |
4866 | ||
4867 | os->bfd_section->size = TO_SIZE (after - os->bfd_section->vma); | |
4868 | } | |
4869 | ||
4870 | /* Set section lma. */ | |
4871 | r = os->region; | |
4872 | if (r == NULL) | |
4873 | r = lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE); | |
4874 | ||
4875 | if (os->load_base) | |
4876 | { | |
4877 | bfd_vma lma = exp_get_abs_int (os->load_base, 0, "load base"); | |
4878 | os->bfd_section->lma = lma; | |
e9ee469a | 4879 | } |
07dfcf38 | 4880 | else if (os->lma_region != NULL) |
cde9e0be AM |
4881 | { |
4882 | bfd_vma lma = os->lma_region->current; | |
e9ee469a | 4883 | |
cde9e0be AM |
4884 | if (os->section_alignment != -1) |
4885 | lma = align_power (lma, os->section_alignment); | |
4886 | os->bfd_section->lma = lma; | |
4887 | } | |
dc0b6aa0 AM |
4888 | else if (r->last_os != NULL |
4889 | && (os->bfd_section->flags & SEC_ALLOC) != 0) | |
cde9e0be AM |
4890 | { |
4891 | bfd_vma lma; | |
4892 | asection *last; | |
4893 | ||
4894 | last = r->last_os->output_section_statement.bfd_section; | |
dc0b6aa0 AM |
4895 | |
4896 | /* A backwards move of dot should be accompanied by | |
4897 | an explicit assignment to the section LMA (ie. | |
91eb6c46 | 4898 | os->load_base set) because backwards moves can |
dc0b6aa0 | 4899 | create overlapping LMAs. */ |
264b6205 | 4900 | if (dot < last->vma |
91eb6c46 AM |
4901 | && os->bfd_section->size != 0 |
4902 | && dot + os->bfd_section->size <= last->vma) | |
dc0b6aa0 | 4903 | { |
dc0b6aa0 AM |
4904 | /* If dot moved backwards then leave lma equal to |
4905 | vma. This is the old default lma, which might | |
4906 | just happen to work when the backwards move is | |
91eb6c46 AM |
4907 | sufficiently large. Nag if this changes anything, |
4908 | so people can fix their linker scripts. */ | |
4909 | ||
4910 | if (last->vma != last->lma) | |
4911 | einfo (_("%P: warning: dot moved backwards before `%s'\n"), | |
4912 | os->name); | |
dc0b6aa0 AM |
4913 | } |
4914 | else | |
cde9e0be | 4915 | { |
152d792f AM |
4916 | /* If this is an overlay, set the current lma to that |
4917 | at the end of the previous section. */ | |
4918 | if (os->sectype == overlay_section) | |
cde9e0be AM |
4919 | lma = last->lma + last->size; |
4920 | ||
4921 | /* Otherwise, keep the same lma to vma relationship | |
4922 | as the previous section. */ | |
4923 | else | |
4924 | lma = dot + last->lma - last->vma; | |
4925 | ||
4926 | if (os->section_alignment != -1) | |
4927 | lma = align_power (lma, os->section_alignment); | |
4928 | os->bfd_section->lma = lma; | |
4929 | } | |
4930 | } | |
4931 | os->processed_lma = TRUE; | |
5f992e62 | 4932 | |
cde9e0be AM |
4933 | if (bfd_is_abs_section (os->bfd_section) || os->ignored) |
4934 | break; | |
252b5132 | 4935 | |
cde9e0be AM |
4936 | /* Keep track of normal sections using the default |
4937 | lma region. We use this to set the lma for | |
4938 | following sections. Overlays or other linker | |
4939 | script assignment to lma might mean that the | |
dc0b6aa0 AM |
4940 | default lma == vma is incorrect. |
4941 | To avoid warnings about dot moving backwards when using | |
4942 | -Ttext, don't start tracking sections until we find one | |
4943 | of non-zero size or with lma set differently to vma. */ | |
cde9e0be AM |
4944 | if (((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 |
4945 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0) | |
dc0b6aa0 AM |
4946 | && (os->bfd_section->flags & SEC_ALLOC) != 0 |
4947 | && (os->bfd_section->size != 0 | |
264b6205 AM |
4948 | || (r->last_os == NULL |
4949 | && os->bfd_section->vma != os->bfd_section->lma) | |
4950 | || (r->last_os != NULL | |
4951 | && dot >= (r->last_os->output_section_statement | |
ea0c3cd5 | 4952 | .bfd_section->vma))) |
cde9e0be AM |
4953 | && os->lma_region == NULL |
4954 | && !link_info.relocatable) | |
4955 | r->last_os = s; | |
9f88b410 | 4956 | |
e5caec89 NS |
4957 | /* .tbss sections effectively have zero size. */ |
4958 | if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 | |
4959 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0 | |
4960 | || link_info.relocatable) | |
eea6121a | 4961 | dot += TO_ADDR (os->bfd_section->size); |
e5caec89 | 4962 | |
9f88b410 | 4963 | if (os->update_dot_tree != 0) |
e9ee469a | 4964 | exp_fold_tree (os->update_dot_tree, bfd_abs_section_ptr, &dot); |
9f88b410 | 4965 | |
252b5132 RH |
4966 | /* Update dot in the region ? |
4967 | We only do this if the section is going to be allocated, | |
4968 | since unallocated sections do not contribute to the region's | |
13392b77 | 4969 | overall size in memory. |
5f992e62 | 4970 | |
cce4c4c5 NC |
4971 | If the SEC_NEVER_LOAD bit is not set, it will affect the |
4972 | addresses of sections after it. We have to update | |
4973 | dot. */ | |
1579bae1 | 4974 | if (os->region != NULL |
6feb9908 AM |
4975 | && ((os->bfd_section->flags & SEC_NEVER_LOAD) == 0 |
4976 | || (os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)))) | |
252b5132 RH |
4977 | { |
4978 | os->region->current = dot; | |
5f992e62 | 4979 | |
cf888e70 NC |
4980 | if (check_regions) |
4981 | /* Make sure the new address is within the region. */ | |
4982 | os_region_check (os, os->region, os->addr_tree, | |
4983 | os->bfd_section->vma); | |
08da4cac | 4984 | |
a2cab753 NS |
4985 | if (os->lma_region != NULL && os->lma_region != os->region |
4986 | && (os->bfd_section->flags & SEC_LOAD)) | |
08da4cac | 4987 | { |
cde9e0be AM |
4988 | os->lma_region->current |
4989 | = os->bfd_section->lma + TO_ADDR (os->bfd_section->size); | |
66e28d60 | 4990 | |
cf888e70 NC |
4991 | if (check_regions) |
4992 | os_region_check (os, os->lma_region, NULL, | |
cde9e0be | 4993 | os->bfd_section->lma); |
08da4cac | 4994 | } |
252b5132 RH |
4995 | } |
4996 | } | |
4997 | break; | |
4998 | ||
4999 | case lang_constructors_statement_enum: | |
e535e147 | 5000 | dot = lang_size_sections_1 (&constructor_list.head, |
2d20f7bf | 5001 | output_section_statement, |
cf888e70 | 5002 | fill, dot, relax, check_regions); |
252b5132 RH |
5003 | break; |
5004 | ||
5005 | case lang_data_statement_enum: | |
5006 | { | |
5007 | unsigned int size = 0; | |
5008 | ||
7fabd029 | 5009 | s->data_statement.output_offset = |
08da4cac | 5010 | dot - output_section_statement->bfd_section->vma; |
252b5132 RH |
5011 | s->data_statement.output_section = |
5012 | output_section_statement->bfd_section; | |
5013 | ||
1b493742 NS |
5014 | /* We might refer to provided symbols in the expression, and |
5015 | need to mark them as needed. */ | |
e9ee469a | 5016 | exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot); |
1b493742 | 5017 | |
252b5132 RH |
5018 | switch (s->data_statement.type) |
5019 | { | |
08da4cac KH |
5020 | default: |
5021 | abort (); | |
252b5132 RH |
5022 | case QUAD: |
5023 | case SQUAD: | |
5024 | size = QUAD_SIZE; | |
5025 | break; | |
5026 | case LONG: | |
5027 | size = LONG_SIZE; | |
5028 | break; | |
5029 | case SHORT: | |
5030 | size = SHORT_SIZE; | |
5031 | break; | |
5032 | case BYTE: | |
5033 | size = BYTE_SIZE; | |
5034 | break; | |
5035 | } | |
e5caa5e0 AM |
5036 | if (size < TO_SIZE ((unsigned) 1)) |
5037 | size = TO_SIZE ((unsigned) 1); | |
5038 | dot += TO_ADDR (size); | |
eea6121a | 5039 | output_section_statement->bfd_section->size += size; |
252b5132 RH |
5040 | } |
5041 | break; | |
5042 | ||
5043 | case lang_reloc_statement_enum: | |
5044 | { | |
5045 | int size; | |
5046 | ||
7fabd029 | 5047 | s->reloc_statement.output_offset = |
252b5132 RH |
5048 | dot - output_section_statement->bfd_section->vma; |
5049 | s->reloc_statement.output_section = | |
5050 | output_section_statement->bfd_section; | |
5051 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
e5caa5e0 | 5052 | dot += TO_ADDR (size); |
eea6121a | 5053 | output_section_statement->bfd_section->size += size; |
252b5132 RH |
5054 | } |
5055 | break; | |
5f992e62 | 5056 | |
252b5132 | 5057 | case lang_wild_statement_enum: |
e535e147 | 5058 | dot = lang_size_sections_1 (&s->wild_statement.children.head, |
2d20f7bf | 5059 | output_section_statement, |
cf888e70 | 5060 | fill, dot, relax, check_regions); |
252b5132 RH |
5061 | break; |
5062 | ||
5063 | case lang_object_symbols_statement_enum: | |
5064 | link_info.create_object_symbols_section = | |
5065 | output_section_statement->bfd_section; | |
5066 | break; | |
e9ee469a | 5067 | |
252b5132 RH |
5068 | case lang_output_statement_enum: |
5069 | case lang_target_statement_enum: | |
5070 | break; | |
e9ee469a | 5071 | |
252b5132 RH |
5072 | case lang_input_section_enum: |
5073 | { | |
5074 | asection *i; | |
5075 | ||
e535e147 | 5076 | i = s->input_section.section; |
eea6121a | 5077 | if (relax) |
252b5132 | 5078 | { |
b34976b6 | 5079 | bfd_boolean again; |
252b5132 RH |
5080 | |
5081 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) | |
5082 | einfo (_("%P%F: can't relax section: %E\n")); | |
5083 | if (again) | |
b34976b6 | 5084 | *relax = TRUE; |
252b5132 | 5085 | } |
b3327aad AM |
5086 | dot = size_input_section (prev, output_section_statement, |
5087 | output_section_statement->fill, dot); | |
252b5132 RH |
5088 | } |
5089 | break; | |
e9ee469a | 5090 | |
252b5132 RH |
5091 | case lang_input_statement_enum: |
5092 | break; | |
e9ee469a | 5093 | |
252b5132 | 5094 | case lang_fill_statement_enum: |
08da4cac KH |
5095 | s->fill_statement.output_section = |
5096 | output_section_statement->bfd_section; | |
252b5132 RH |
5097 | |
5098 | fill = s->fill_statement.fill; | |
5099 | break; | |
e9ee469a | 5100 | |
252b5132 RH |
5101 | case lang_assignment_statement_enum: |
5102 | { | |
5103 | bfd_vma newdot = dot; | |
49c13adb | 5104 | etree_type *tree = s->assignment_statement.exp; |
252b5132 | 5105 | |
b10a8ae0 L |
5106 | expld.dataseg.relro = exp_dataseg_relro_none; |
5107 | ||
49c13adb | 5108 | exp_fold_tree (tree, |
408082ec | 5109 | output_section_statement->bfd_section, |
252b5132 RH |
5110 | &newdot); |
5111 | ||
b10a8ae0 L |
5112 | if (expld.dataseg.relro == exp_dataseg_relro_start) |
5113 | { | |
5114 | if (!expld.dataseg.relro_start_stat) | |
5115 | expld.dataseg.relro_start_stat = s; | |
5116 | else | |
5117 | { | |
5118 | ASSERT (expld.dataseg.relro_start_stat == s); | |
5119 | } | |
5120 | } | |
5121 | else if (expld.dataseg.relro == exp_dataseg_relro_end) | |
5122 | { | |
5123 | if (!expld.dataseg.relro_end_stat) | |
5124 | expld.dataseg.relro_end_stat = s; | |
5125 | else | |
5126 | { | |
5127 | ASSERT (expld.dataseg.relro_end_stat == s); | |
5128 | } | |
5129 | } | |
5130 | expld.dataseg.relro = exp_dataseg_relro_none; | |
5131 | ||
49c13adb | 5132 | /* This symbol is relative to this section. */ |
a14a5de3 | 5133 | if ((tree->type.node_class == etree_provided |
49c13adb L |
5134 | || tree->type.node_class == etree_assign) |
5135 | && (tree->assign.dst [0] != '.' | |
5136 | || tree->assign.dst [1] != '\0')) | |
5137 | output_section_statement->section_relative_symbol = 1; | |
5138 | ||
85852e36 | 5139 | if (!output_section_statement->ignored) |
252b5132 | 5140 | { |
252b5132 RH |
5141 | if (output_section_statement == abs_output_section) |
5142 | { | |
5143 | /* If we don't have an output section, then just adjust | |
5144 | the default memory address. */ | |
6feb9908 AM |
5145 | lang_memory_region_lookup (DEFAULT_MEMORY_REGION, |
5146 | FALSE)->current = newdot; | |
252b5132 | 5147 | } |
85852e36 | 5148 | else if (newdot != dot) |
252b5132 | 5149 | { |
b3327aad AM |
5150 | /* Insert a pad after this statement. We can't |
5151 | put the pad before when relaxing, in case the | |
5152 | assignment references dot. */ | |
e5caa5e0 | 5153 | insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot), |
b3327aad AM |
5154 | output_section_statement->bfd_section, dot); |
5155 | ||
5156 | /* Don't neuter the pad below when relaxing. */ | |
5157 | s = s->header.next; | |
9dfc8ab2 | 5158 | |
e9ee469a AM |
5159 | /* If dot is advanced, this implies that the section |
5160 | should have space allocated to it, unless the | |
5161 | user has explicitly stated that the section | |
5162 | should never be loaded. */ | |
14ac84b4 | 5163 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) |
e9ee469a AM |
5164 | output_section_statement->bfd_section->flags |= SEC_ALLOC; |
5165 | } | |
252b5132 RH |
5166 | dot = newdot; |
5167 | } | |
5168 | } | |
5169 | break; | |
5170 | ||
5171 | case lang_padding_statement_enum: | |
c0c330a7 AM |
5172 | /* If this is the first time lang_size_sections is called, |
5173 | we won't have any padding statements. If this is the | |
5174 | second or later passes when relaxing, we should allow | |
5175 | padding to shrink. If padding is needed on this pass, it | |
5176 | will be added back in. */ | |
5177 | s->padding_statement.size = 0; | |
6e814ff8 AM |
5178 | |
5179 | /* Make sure output_offset is valid. If relaxation shrinks | |
5180 | the section and this pad isn't needed, it's possible to | |
5181 | have output_offset larger than the final size of the | |
5182 | section. bfd_set_section_contents will complain even for | |
5183 | a pad size of zero. */ | |
5184 | s->padding_statement.output_offset | |
5185 | = dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
5186 | break; |
5187 | ||
5188 | case lang_group_statement_enum: | |
e535e147 | 5189 | dot = lang_size_sections_1 (&s->group_statement.children.head, |
2d20f7bf | 5190 | output_section_statement, |
cf888e70 | 5191 | fill, dot, relax, check_regions); |
252b5132 RH |
5192 | break; |
5193 | ||
53d25da6 | 5194 | case lang_insert_statement_enum: |
252b5132 RH |
5195 | break; |
5196 | ||
c0c330a7 | 5197 | /* We can only get here when relaxing is turned on. */ |
252b5132 RH |
5198 | case lang_address_statement_enum: |
5199 | break; | |
53d25da6 AM |
5200 | |
5201 | default: | |
5202 | FAIL (); | |
5203 | break; | |
252b5132 RH |
5204 | } |
5205 | prev = &s->header.next; | |
5206 | } | |
5207 | return dot; | |
5208 | } | |
5209 | ||
591a748a NC |
5210 | /* Callback routine that is used in _bfd_elf_map_sections_to_segments. |
5211 | The BFD library has set NEW_SEGMENT to TRUE iff it thinks that | |
5212 | CURRENT_SECTION and PREVIOUS_SECTION ought to be placed into different | |
5213 | segments. We are allowed an opportunity to override this decision. */ | |
2889e75b NC |
5214 | |
5215 | bfd_boolean | |
5216 | ldlang_override_segment_assignment (struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
5217 | bfd * abfd ATTRIBUTE_UNUSED, | |
5218 | asection * current_section, | |
5219 | asection * previous_section, | |
5220 | bfd_boolean new_segment) | |
5221 | { | |
5222 | lang_output_section_statement_type * cur; | |
5223 | lang_output_section_statement_type * prev; | |
591a748a NC |
5224 | |
5225 | /* The checks below are only necessary when the BFD library has decided | |
5226 | that the two sections ought to be placed into the same segment. */ | |
2889e75b NC |
5227 | if (new_segment) |
5228 | return TRUE; | |
5229 | ||
5230 | /* Paranoia checks. */ | |
5231 | if (current_section == NULL || previous_section == NULL) | |
5232 | return new_segment; | |
5233 | ||
5234 | /* Find the memory regions associated with the two sections. | |
5235 | We call lang_output_section_find() here rather than scanning the list | |
5236 | of output sections looking for a matching section pointer because if | |
591a748a | 5237 | we have a large number of sections then a hash lookup is faster. */ |
2889e75b NC |
5238 | cur = lang_output_section_find (current_section->name); |
5239 | prev = lang_output_section_find (previous_section->name); | |
5240 | ||
591a748a | 5241 | /* More paranoia. */ |
2889e75b NC |
5242 | if (cur == NULL || prev == NULL) |
5243 | return new_segment; | |
5244 | ||
5245 | /* If the regions are different then force the sections to live in | |
591a748a NC |
5246 | different segments. See the email thread starting at the following |
5247 | URL for the reasons why this is necessary: | |
2889e75b NC |
5248 | http://sourceware.org/ml/binutils/2007-02/msg00216.html */ |
5249 | return cur->region != prev->region; | |
5250 | } | |
5251 | ||
e9ee469a AM |
5252 | void |
5253 | one_lang_size_sections_pass (bfd_boolean *relax, bfd_boolean check_regions) | |
2d20f7bf | 5254 | { |
420e579c | 5255 | lang_statement_iteration++; |
e535e147 AM |
5256 | lang_size_sections_1 (&statement_list.head, abs_output_section, |
5257 | 0, 0, relax, check_regions); | |
e9ee469a | 5258 | } |
420e579c | 5259 | |
e9ee469a AM |
5260 | void |
5261 | lang_size_sections (bfd_boolean *relax, bfd_boolean check_regions) | |
5262 | { | |
5263 | expld.phase = lang_allocating_phase_enum; | |
5264 | expld.dataseg.phase = exp_dataseg_none; | |
5265 | ||
5266 | one_lang_size_sections_pass (relax, check_regions); | |
5267 | if (expld.dataseg.phase == exp_dataseg_end_seen | |
5268 | && link_info.relro && expld.dataseg.relro_end) | |
8c37241b JJ |
5269 | { |
5270 | /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END pair was seen, try | |
e9ee469a | 5271 | to put expld.dataseg.relro on a (common) page boundary. */ |
2b60860a | 5272 | bfd_vma min_base, old_base, relro_end, maxpage; |
8c37241b | 5273 | |
e9ee469a | 5274 | expld.dataseg.phase = exp_dataseg_relro_adjust; |
e9ee469a | 5275 | maxpage = expld.dataseg.maxpagesize; |
2b60860a JK |
5276 | /* MIN_BASE is the absolute minimum address we are allowed to start the |
5277 | read-write segment (byte before will be mapped read-only). */ | |
5278 | min_base = (expld.dataseg.min_base + maxpage - 1) & ~(maxpage - 1); | |
5279 | /* OLD_BASE is the address for a feasible minimum address which will | |
5280 | still not cause a data overlap inside MAXPAGE causing file offset skip | |
5281 | by MAXPAGE. */ | |
5282 | old_base = expld.dataseg.base; | |
e9ee469a AM |
5283 | expld.dataseg.base += (-expld.dataseg.relro_end |
5284 | & (expld.dataseg.pagesize - 1)); | |
a4f5ad88 | 5285 | /* Compute the expected PT_GNU_RELRO segment end. */ |
967928e9 AM |
5286 | relro_end = ((expld.dataseg.relro_end + expld.dataseg.pagesize - 1) |
5287 | & ~(expld.dataseg.pagesize - 1)); | |
2b60860a | 5288 | if (min_base + maxpage < expld.dataseg.base) |
e3070fef | 5289 | { |
e9ee469a | 5290 | expld.dataseg.base -= maxpage; |
e3070fef JJ |
5291 | relro_end -= maxpage; |
5292 | } | |
f86a8756 | 5293 | lang_reset_memory_regions (); |
e9ee469a AM |
5294 | one_lang_size_sections_pass (relax, check_regions); |
5295 | if (expld.dataseg.relro_end > relro_end) | |
a4f5ad88 JJ |
5296 | { |
5297 | /* The alignment of sections between DATA_SEGMENT_ALIGN | |
5298 | and DATA_SEGMENT_RELRO_END caused huge padding to be | |
2b60860a JK |
5299 | inserted at DATA_SEGMENT_RELRO_END. Try to start a bit lower so |
5300 | that the section alignments will fit in. */ | |
a4f5ad88 JJ |
5301 | asection *sec; |
5302 | unsigned int max_alignment_power = 0; | |
5303 | ||
5304 | /* Find maximum alignment power of sections between | |
5305 | DATA_SEGMENT_ALIGN and DATA_SEGMENT_RELRO_END. */ | |
f13a99db | 5306 | for (sec = link_info.output_bfd->sections; sec; sec = sec->next) |
e9ee469a AM |
5307 | if (sec->vma >= expld.dataseg.base |
5308 | && sec->vma < expld.dataseg.relro_end | |
a4f5ad88 JJ |
5309 | && sec->alignment_power > max_alignment_power) |
5310 | max_alignment_power = sec->alignment_power; | |
5311 | ||
e9ee469a | 5312 | if (((bfd_vma) 1 << max_alignment_power) < expld.dataseg.pagesize) |
a4f5ad88 | 5313 | { |
2b60860a | 5314 | if (expld.dataseg.base - (1 << max_alignment_power) < old_base) |
e9ee469a AM |
5315 | expld.dataseg.base += expld.dataseg.pagesize; |
5316 | expld.dataseg.base -= (1 << max_alignment_power); | |
f86a8756 | 5317 | lang_reset_memory_regions (); |
e9ee469a | 5318 | one_lang_size_sections_pass (relax, check_regions); |
a4f5ad88 JJ |
5319 | } |
5320 | } | |
e9ee469a AM |
5321 | link_info.relro_start = expld.dataseg.base; |
5322 | link_info.relro_end = expld.dataseg.relro_end; | |
8c37241b | 5323 | } |
e9ee469a | 5324 | else if (expld.dataseg.phase == exp_dataseg_end_seen) |
2d20f7bf JJ |
5325 | { |
5326 | /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_END pair was seen, check whether | |
5327 | a page could be saved in the data segment. */ | |
5328 | bfd_vma first, last; | |
5329 | ||
e9ee469a AM |
5330 | first = -expld.dataseg.base & (expld.dataseg.pagesize - 1); |
5331 | last = expld.dataseg.end & (expld.dataseg.pagesize - 1); | |
2d20f7bf | 5332 | if (first && last |
e9ee469a AM |
5333 | && ((expld.dataseg.base & ~(expld.dataseg.pagesize - 1)) |
5334 | != (expld.dataseg.end & ~(expld.dataseg.pagesize - 1))) | |
5335 | && first + last <= expld.dataseg.pagesize) | |
2d20f7bf | 5336 | { |
e9ee469a | 5337 | expld.dataseg.phase = exp_dataseg_adjust; |
f86a8756 | 5338 | lang_reset_memory_regions (); |
e9ee469a | 5339 | one_lang_size_sections_pass (relax, check_regions); |
2d20f7bf JJ |
5340 | } |
5341 | } | |
5342 | ||
e9ee469a | 5343 | expld.phase = lang_final_phase_enum; |
2d20f7bf JJ |
5344 | } |
5345 | ||
420e579c HPN |
5346 | /* Worker function for lang_do_assignments. Recursiveness goes here. */ |
5347 | ||
5348 | static bfd_vma | |
66e28d60 AM |
5349 | lang_do_assignments_1 (lang_statement_union_type *s, |
5350 | lang_output_section_statement_type *current_os, | |
5351 | fill_type *fill, | |
5352 | bfd_vma dot) | |
252b5132 | 5353 | { |
1579bae1 | 5354 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
5355 | { |
5356 | switch (s->header.type) | |
5357 | { | |
5358 | case lang_constructors_statement_enum: | |
420e579c | 5359 | dot = lang_do_assignments_1 (constructor_list.head, |
66e28d60 | 5360 | current_os, fill, dot); |
252b5132 RH |
5361 | break; |
5362 | ||
5363 | case lang_output_section_statement_enum: | |
5364 | { | |
d1778b88 | 5365 | lang_output_section_statement_type *os; |
252b5132 | 5366 | |
d1778b88 | 5367 | os = &(s->output_section_statement); |
75ff4589 | 5368 | if (os->bfd_section != NULL && !os->ignored) |
252b5132 RH |
5369 | { |
5370 | dot = os->bfd_section->vma; | |
66e28d60 | 5371 | |
cde9e0be | 5372 | lang_do_assignments_1 (os->children.head, os, os->fill, dot); |
66e28d60 | 5373 | |
3737f867 JJ |
5374 | /* .tbss sections effectively have zero size. */ |
5375 | if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 | |
5376 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0 | |
5377 | || link_info.relocatable) | |
cde9e0be | 5378 | dot += TO_ADDR (os->bfd_section->size); |
5590fba9 NC |
5379 | |
5380 | if (os->update_dot_tree != NULL) | |
5381 | exp_fold_tree (os->update_dot_tree, bfd_abs_section_ptr, &dot); | |
252b5132 RH |
5382 | } |
5383 | } | |
5384 | break; | |
e9ee469a | 5385 | |
252b5132 RH |
5386 | case lang_wild_statement_enum: |
5387 | ||
420e579c | 5388 | dot = lang_do_assignments_1 (s->wild_statement.children.head, |
66e28d60 | 5389 | current_os, fill, dot); |
252b5132 RH |
5390 | break; |
5391 | ||
5392 | case lang_object_symbols_statement_enum: | |
5393 | case lang_output_statement_enum: | |
5394 | case lang_target_statement_enum: | |
252b5132 | 5395 | break; |
e9ee469a | 5396 | |
252b5132 | 5397 | case lang_data_statement_enum: |
e9ee469a AM |
5398 | exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot); |
5399 | if (expld.result.valid_p) | |
5400 | s->data_statement.value = (expld.result.value | |
5401 | + expld.result.section->vma); | |
5402 | else | |
5403 | einfo (_("%F%P: invalid data statement\n")); | |
b7a26f91 KH |
5404 | { |
5405 | unsigned int size; | |
08da4cac KH |
5406 | switch (s->data_statement.type) |
5407 | { | |
5408 | default: | |
5409 | abort (); | |
5410 | case QUAD: | |
5411 | case SQUAD: | |
5412 | size = QUAD_SIZE; | |
5413 | break; | |
5414 | case LONG: | |
5415 | size = LONG_SIZE; | |
5416 | break; | |
5417 | case SHORT: | |
5418 | size = SHORT_SIZE; | |
5419 | break; | |
5420 | case BYTE: | |
5421 | size = BYTE_SIZE; | |
5422 | break; | |
5423 | } | |
e5caa5e0 AM |
5424 | if (size < TO_SIZE ((unsigned) 1)) |
5425 | size = TO_SIZE ((unsigned) 1); | |
5426 | dot += TO_ADDR (size); | |
08da4cac | 5427 | } |
252b5132 RH |
5428 | break; |
5429 | ||
5430 | case lang_reloc_statement_enum: | |
e9ee469a AM |
5431 | exp_fold_tree (s->reloc_statement.addend_exp, |
5432 | bfd_abs_section_ptr, &dot); | |
5433 | if (expld.result.valid_p) | |
5434 | s->reloc_statement.addend_value = expld.result.value; | |
5435 | else | |
5436 | einfo (_("%F%P: invalid reloc statement\n")); | |
e5caa5e0 | 5437 | dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto)); |
252b5132 RH |
5438 | break; |
5439 | ||
5440 | case lang_input_section_enum: | |
5441 | { | |
5442 | asection *in = s->input_section.section; | |
5443 | ||
57ceae94 | 5444 | if ((in->flags & SEC_EXCLUDE) == 0) |
eea6121a | 5445 | dot += TO_ADDR (in->size); |
252b5132 RH |
5446 | } |
5447 | break; | |
5448 | ||
5449 | case lang_input_statement_enum: | |
5450 | break; | |
e9ee469a | 5451 | |
252b5132 RH |
5452 | case lang_fill_statement_enum: |
5453 | fill = s->fill_statement.fill; | |
5454 | break; | |
252b5132 | 5455 | |
e9ee469a AM |
5456 | case lang_assignment_statement_enum: |
5457 | exp_fold_tree (s->assignment_statement.exp, | |
66e28d60 | 5458 | current_os->bfd_section, |
e9ee469a | 5459 | &dot); |
252b5132 | 5460 | break; |
e9ee469a | 5461 | |
252b5132 | 5462 | case lang_padding_statement_enum: |
e5caa5e0 | 5463 | dot += TO_ADDR (s->padding_statement.size); |
252b5132 RH |
5464 | break; |
5465 | ||
5466 | case lang_group_statement_enum: | |
420e579c | 5467 | dot = lang_do_assignments_1 (s->group_statement.children.head, |
66e28d60 | 5468 | current_os, fill, dot); |
252b5132 RH |
5469 | break; |
5470 | ||
53d25da6 | 5471 | case lang_insert_statement_enum: |
252b5132 | 5472 | break; |
e9ee469a | 5473 | |
252b5132 RH |
5474 | case lang_address_statement_enum: |
5475 | break; | |
53d25da6 AM |
5476 | |
5477 | default: | |
5478 | FAIL (); | |
5479 | break; | |
252b5132 | 5480 | } |
252b5132 RH |
5481 | } |
5482 | return dot; | |
5483 | } | |
5484 | ||
f2241121 | 5485 | void |
e9ee469a | 5486 | lang_do_assignments (void) |
420e579c | 5487 | { |
420e579c | 5488 | lang_statement_iteration++; |
e9ee469a | 5489 | lang_do_assignments_1 (statement_list.head, abs_output_section, NULL, 0); |
420e579c HPN |
5490 | } |
5491 | ||
252b5132 RH |
5492 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the |
5493 | operator .startof. (section_name), it produces an undefined symbol | |
5494 | .startof.section_name. Similarly, when it sees | |
5495 | .sizeof. (section_name), it produces an undefined symbol | |
5496 | .sizeof.section_name. For all the output sections, we look for | |
5497 | such symbols, and set them to the correct value. */ | |
5498 | ||
5499 | static void | |
1579bae1 | 5500 | lang_set_startof (void) |
252b5132 RH |
5501 | { |
5502 | asection *s; | |
5503 | ||
1049f94e | 5504 | if (link_info.relocatable) |
252b5132 RH |
5505 | return; |
5506 | ||
f13a99db | 5507 | for (s = link_info.output_bfd->sections; s != NULL; s = s->next) |
252b5132 RH |
5508 | { |
5509 | const char *secname; | |
5510 | char *buf; | |
5511 | struct bfd_link_hash_entry *h; | |
5512 | ||
f13a99db | 5513 | secname = bfd_get_section_name (link_info.output_bfd, s); |
1e9cc1c2 | 5514 | buf = (char *) xmalloc (10 + strlen (secname)); |
252b5132 RH |
5515 | |
5516 | sprintf (buf, ".startof.%s", secname); | |
b34976b6 | 5517 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
5518 | if (h != NULL && h->type == bfd_link_hash_undefined) |
5519 | { | |
5520 | h->type = bfd_link_hash_defined; | |
f13a99db | 5521 | h->u.def.value = bfd_get_section_vma (link_info.output_bfd, s); |
252b5132 RH |
5522 | h->u.def.section = bfd_abs_section_ptr; |
5523 | } | |
5524 | ||
5525 | sprintf (buf, ".sizeof.%s", secname); | |
b34976b6 | 5526 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
5527 | if (h != NULL && h->type == bfd_link_hash_undefined) |
5528 | { | |
5529 | h->type = bfd_link_hash_defined; | |
eea6121a | 5530 | h->u.def.value = TO_ADDR (s->size); |
252b5132 RH |
5531 | h->u.def.section = bfd_abs_section_ptr; |
5532 | } | |
5533 | ||
5534 | free (buf); | |
5535 | } | |
5536 | } | |
5537 | ||
5538 | static void | |
750877ba | 5539 | lang_end (void) |
252b5132 RH |
5540 | { |
5541 | struct bfd_link_hash_entry *h; | |
b34976b6 | 5542 | bfd_boolean warn; |
252b5132 | 5543 | |
ac69cbc6 | 5544 | if ((link_info.relocatable && !link_info.gc_sections) |
4bf27aa9 | 5545 | || (link_info.shared && !link_info.executable)) |
71934f94 | 5546 | warn = entry_from_cmdline; |
252b5132 | 5547 | else |
b34976b6 | 5548 | warn = TRUE; |
252b5132 | 5549 | |
ac69cbc6 TG |
5550 | /* Force the user to specify a root when generating a relocatable with |
5551 | --gc-sections. */ | |
5552 | if (link_info.gc_sections && link_info.relocatable | |
5553 | && (entry_symbol.name == NULL | |
5554 | && ldlang_undef_chain_list_head == NULL)) | |
5555 | einfo (_("%P%F: gc-sections requires either an entry or " | |
5556 | "an undefined symbol\n")); | |
5557 | ||
1579bae1 | 5558 | if (entry_symbol.name == NULL) |
252b5132 | 5559 | { |
a359509e ZW |
5560 | /* No entry has been specified. Look for the default entry, but |
5561 | don't warn if we don't find it. */ | |
5562 | entry_symbol.name = entry_symbol_default; | |
b34976b6 | 5563 | warn = FALSE; |
252b5132 RH |
5564 | } |
5565 | ||
e3e942e9 | 5566 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, |
b34976b6 | 5567 | FALSE, FALSE, TRUE); |
1579bae1 | 5568 | if (h != NULL |
252b5132 RH |
5569 | && (h->type == bfd_link_hash_defined |
5570 | || h->type == bfd_link_hash_defweak) | |
5571 | && h->u.def.section->output_section != NULL) | |
5572 | { | |
5573 | bfd_vma val; | |
5574 | ||
5575 | val = (h->u.def.value | |
f13a99db | 5576 | + bfd_get_section_vma (link_info.output_bfd, |
252b5132 RH |
5577 | h->u.def.section->output_section) |
5578 | + h->u.def.section->output_offset); | |
f13a99db | 5579 | if (! bfd_set_start_address (link_info.output_bfd, val)) |
e3e942e9 | 5580 | einfo (_("%P%F:%s: can't set start address\n"), entry_symbol.name); |
252b5132 RH |
5581 | } |
5582 | else | |
5583 | { | |
5584 | bfd_vma val; | |
5f992e62 | 5585 | const char *send; |
252b5132 RH |
5586 | |
5587 | /* We couldn't find the entry symbol. Try parsing it as a | |
afd7a018 | 5588 | number. */ |
e3e942e9 | 5589 | val = bfd_scan_vma (entry_symbol.name, &send, 0); |
252b5132 RH |
5590 | if (*send == '\0') |
5591 | { | |
f13a99db | 5592 | if (! bfd_set_start_address (link_info.output_bfd, val)) |
252b5132 RH |
5593 | einfo (_("%P%F: can't set start address\n")); |
5594 | } | |
5595 | else | |
5596 | { | |
5597 | asection *ts; | |
5598 | ||
5599 | /* Can't find the entry symbol, and it's not a number. Use | |
5600 | the first address in the text section. */ | |
f13a99db | 5601 | ts = bfd_get_section_by_name (link_info.output_bfd, entry_section); |
1579bae1 | 5602 | if (ts != NULL) |
252b5132 RH |
5603 | { |
5604 | if (warn) | |
6feb9908 AM |
5605 | einfo (_("%P: warning: cannot find entry symbol %s;" |
5606 | " defaulting to %V\n"), | |
e3e942e9 | 5607 | entry_symbol.name, |
f13a99db AM |
5608 | bfd_get_section_vma (link_info.output_bfd, ts)); |
5609 | if (!(bfd_set_start_address | |
5610 | (link_info.output_bfd, | |
5611 | bfd_get_section_vma (link_info.output_bfd, ts)))) | |
252b5132 RH |
5612 | einfo (_("%P%F: can't set start address\n")); |
5613 | } | |
5614 | else | |
5615 | { | |
5616 | if (warn) | |
6feb9908 AM |
5617 | einfo (_("%P: warning: cannot find entry symbol %s;" |
5618 | " not setting start address\n"), | |
e3e942e9 | 5619 | entry_symbol.name); |
252b5132 RH |
5620 | } |
5621 | } | |
5622 | } | |
420e579c | 5623 | |
7115639b AM |
5624 | /* Don't bfd_hash_table_free (&lang_definedness_table); |
5625 | map file output may result in a call of lang_track_definedness. */ | |
252b5132 RH |
5626 | } |
5627 | ||
5628 | /* This is a small function used when we want to ignore errors from | |
5629 | BFD. */ | |
5630 | ||
5631 | static void | |
87f2a346 | 5632 | ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...) |
252b5132 RH |
5633 | { |
5634 | /* Don't do anything. */ | |
5635 | } | |
5636 | ||
5637 | /* Check that the architecture of all the input files is compatible | |
5638 | with the output file. Also call the backend to let it do any | |
5639 | other checking that is needed. */ | |
5640 | ||
5641 | static void | |
1579bae1 | 5642 | lang_check (void) |
252b5132 RH |
5643 | { |
5644 | lang_statement_union_type *file; | |
5645 | bfd *input_bfd; | |
5f992e62 | 5646 | const bfd_arch_info_type *compatible; |
252b5132 | 5647 | |
1579bae1 | 5648 | for (file = file_chain.head; file != NULL; file = file->input_statement.next) |
252b5132 RH |
5649 | { |
5650 | input_bfd = file->input_statement.the_bfd; | |
6feb9908 | 5651 | compatible |
f13a99db | 5652 | = bfd_arch_get_compatible (input_bfd, link_info.output_bfd, |
6feb9908 | 5653 | command_line.accept_unknown_input_arch); |
30cba025 AM |
5654 | |
5655 | /* In general it is not possible to perform a relocatable | |
5656 | link between differing object formats when the input | |
5657 | file has relocations, because the relocations in the | |
5658 | input format may not have equivalent representations in | |
5659 | the output format (and besides BFD does not translate | |
5660 | relocs for other link purposes than a final link). */ | |
1049f94e | 5661 | if ((link_info.relocatable || link_info.emitrelocations) |
30cba025 | 5662 | && (compatible == NULL |
f13a99db AM |
5663 | || (bfd_get_flavour (input_bfd) |
5664 | != bfd_get_flavour (link_info.output_bfd))) | |
30cba025 AM |
5665 | && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0) |
5666 | { | |
6feb9908 AM |
5667 | einfo (_("%P%F: Relocatable linking with relocations from" |
5668 | " format %s (%B) to format %s (%B) is not supported\n"), | |
30cba025 | 5669 | bfd_get_target (input_bfd), input_bfd, |
f13a99db | 5670 | bfd_get_target (link_info.output_bfd), link_info.output_bfd); |
30cba025 AM |
5671 | /* einfo with %F exits. */ |
5672 | } | |
5673 | ||
252b5132 RH |
5674 | if (compatible == NULL) |
5675 | { | |
5676 | if (command_line.warn_mismatch) | |
9e7750f2 | 5677 | einfo (_("%P%X: %s architecture of input file `%B'" |
6feb9908 | 5678 | " is incompatible with %s output\n"), |
252b5132 | 5679 | bfd_printable_name (input_bfd), input_bfd, |
f13a99db | 5680 | bfd_printable_name (link_info.output_bfd)); |
252b5132 | 5681 | } |
b9247304 | 5682 | else if (bfd_count_sections (input_bfd)) |
252b5132 | 5683 | { |
b9247304 | 5684 | /* If the input bfd has no contents, it shouldn't set the |
b7a26f91 | 5685 | private data of the output bfd. */ |
b9247304 | 5686 | |
252b5132 RH |
5687 | bfd_error_handler_type pfn = NULL; |
5688 | ||
5689 | /* If we aren't supposed to warn about mismatched input | |
afd7a018 AM |
5690 | files, temporarily set the BFD error handler to a |
5691 | function which will do nothing. We still want to call | |
5692 | bfd_merge_private_bfd_data, since it may set up | |
5693 | information which is needed in the output file. */ | |
252b5132 RH |
5694 | if (! command_line.warn_mismatch) |
5695 | pfn = bfd_set_error_handler (ignore_bfd_errors); | |
f13a99db | 5696 | if (! bfd_merge_private_bfd_data (input_bfd, link_info.output_bfd)) |
252b5132 RH |
5697 | { |
5698 | if (command_line.warn_mismatch) | |
6feb9908 AM |
5699 | einfo (_("%P%X: failed to merge target specific data" |
5700 | " of file %B\n"), input_bfd); | |
252b5132 RH |
5701 | } |
5702 | if (! command_line.warn_mismatch) | |
5703 | bfd_set_error_handler (pfn); | |
5704 | } | |
5705 | } | |
5706 | } | |
5707 | ||
5708 | /* Look through all the global common symbols and attach them to the | |
5709 | correct section. The -sort-common command line switch may be used | |
de7dd2bd | 5710 | to roughly sort the entries by alignment. */ |
252b5132 RH |
5711 | |
5712 | static void | |
1579bae1 | 5713 | lang_common (void) |
252b5132 | 5714 | { |
4818e05f AM |
5715 | if (command_line.inhibit_common_definition) |
5716 | return; | |
1049f94e | 5717 | if (link_info.relocatable |
252b5132 RH |
5718 | && ! command_line.force_common_definition) |
5719 | return; | |
5720 | ||
5721 | if (! config.sort_common) | |
1579bae1 | 5722 | bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL); |
252b5132 RH |
5723 | else |
5724 | { | |
de7dd2bd NC |
5725 | unsigned int power; |
5726 | ||
5727 | if (config.sort_common == sort_descending) | |
967928e9 AM |
5728 | { |
5729 | for (power = 4; power > 0; power--) | |
5730 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
5731 | ||
5732 | power = 0; | |
5733 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
5734 | } | |
de7dd2bd | 5735 | else |
967928e9 AM |
5736 | { |
5737 | for (power = 0; power <= 4; power++) | |
5738 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
252b5132 | 5739 | |
967928e9 | 5740 | power = UINT_MAX; |
de7dd2bd NC |
5741 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); |
5742 | } | |
252b5132 RH |
5743 | } |
5744 | } | |
5745 | ||
5746 | /* Place one common symbol in the correct section. */ | |
5747 | ||
b34976b6 | 5748 | static bfd_boolean |
1579bae1 | 5749 | lang_one_common (struct bfd_link_hash_entry *h, void *info) |
252b5132 RH |
5750 | { |
5751 | unsigned int power_of_two; | |
5752 | bfd_vma size; | |
5753 | asection *section; | |
5754 | ||
5755 | if (h->type != bfd_link_hash_common) | |
b34976b6 | 5756 | return TRUE; |
252b5132 RH |
5757 | |
5758 | size = h->u.c.size; | |
5759 | power_of_two = h->u.c.p->alignment_power; | |
5760 | ||
de7dd2bd NC |
5761 | if (config.sort_common == sort_descending |
5762 | && power_of_two < *(unsigned int *) info) | |
5763 | return TRUE; | |
5764 | else if (config.sort_common == sort_ascending | |
967928e9 | 5765 | && power_of_two > *(unsigned int *) info) |
b34976b6 | 5766 | return TRUE; |
252b5132 RH |
5767 | |
5768 | section = h->u.c.p->section; | |
3023e3f6 RS |
5769 | if (!bfd_define_common_symbol (link_info.output_bfd, &link_info, h)) |
5770 | einfo (_("%P%F: Could not define common symbol `%T': %E\n"), | |
5771 | h->root.string); | |
252b5132 RH |
5772 | |
5773 | if (config.map_file != NULL) | |
5774 | { | |
b34976b6 | 5775 | static bfd_boolean header_printed; |
252b5132 RH |
5776 | int len; |
5777 | char *name; | |
5778 | char buf[50]; | |
5779 | ||
5780 | if (! header_printed) | |
5781 | { | |
5782 | minfo (_("\nAllocating common symbols\n")); | |
5783 | minfo (_("Common symbol size file\n\n")); | |
b34976b6 | 5784 | header_printed = TRUE; |
252b5132 RH |
5785 | } |
5786 | ||
f13a99db | 5787 | name = bfd_demangle (link_info.output_bfd, h->root.string, |
73705ac3 | 5788 | DMGL_ANSI | DMGL_PARAMS); |
d7d4c8de AM |
5789 | if (name == NULL) |
5790 | { | |
5791 | minfo ("%s", h->root.string); | |
5792 | len = strlen (h->root.string); | |
5793 | } | |
5794 | else | |
5795 | { | |
5796 | minfo ("%s", name); | |
5797 | len = strlen (name); | |
5798 | free (name); | |
5799 | } | |
252b5132 RH |
5800 | |
5801 | if (len >= 19) | |
5802 | { | |
5803 | print_nl (); | |
5804 | len = 0; | |
5805 | } | |
5806 | while (len < 20) | |
5807 | { | |
5808 | print_space (); | |
5809 | ++len; | |
5810 | } | |
5811 | ||
5812 | minfo ("0x"); | |
5813 | if (size <= 0xffffffff) | |
5814 | sprintf (buf, "%lx", (unsigned long) size); | |
5815 | else | |
5816 | sprintf_vma (buf, size); | |
5817 | minfo ("%s", buf); | |
5818 | len = strlen (buf); | |
5819 | ||
5820 | while (len < 16) | |
5821 | { | |
5822 | print_space (); | |
5823 | ++len; | |
5824 | } | |
5825 | ||
5826 | minfo ("%B\n", section->owner); | |
5827 | } | |
5828 | ||
b34976b6 | 5829 | return TRUE; |
252b5132 RH |
5830 | } |
5831 | ||
08da4cac KH |
5832 | /* Run through the input files and ensure that every input section has |
5833 | somewhere to go. If one is found without a destination then create | |
5834 | an input request and place it into the statement tree. */ | |
252b5132 RH |
5835 | |
5836 | static void | |
1579bae1 | 5837 | lang_place_orphans (void) |
252b5132 | 5838 | { |
e50d8076 | 5839 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
5840 | { |
5841 | asection *s; | |
5842 | ||
1579bae1 | 5843 | for (s = file->the_bfd->sections; s != NULL; s = s->next) |
252b5132 | 5844 | { |
1579bae1 | 5845 | if (s->output_section == NULL) |
252b5132 | 5846 | { |
396a2467 | 5847 | /* This section of the file is not attached, root |
afd7a018 | 5848 | around for a sensible place for it to go. */ |
252b5132 RH |
5849 | |
5850 | if (file->just_syms_flag) | |
1449d79b AM |
5851 | bfd_link_just_syms (file->the_bfd, s, &link_info); |
5852 | else if ((s->flags & SEC_EXCLUDE) != 0) | |
164e712d | 5853 | s->output_section = bfd_abs_section_ptr; |
252b5132 RH |
5854 | else if (strcmp (s->name, "COMMON") == 0) |
5855 | { | |
5856 | /* This is a lonely common section which must have | |
5857 | come from an archive. We attach to the section | |
5858 | with the wildcard. */ | |
1049f94e | 5859 | if (! link_info.relocatable |
252b5132 RH |
5860 | || command_line.force_common_definition) |
5861 | { | |
5862 | if (default_common_section == NULL) | |
66c103b7 AM |
5863 | default_common_section |
5864 | = lang_output_section_statement_lookup (".bss", 0, | |
5865 | TRUE); | |
39dcfe18 | 5866 | lang_add_section (&default_common_section->children, s, |
7b986e99 | 5867 | default_common_section); |
252b5132 RH |
5868 | } |
5869 | } | |
252b5132 RH |
5870 | else |
5871 | { | |
bcacc0f5 | 5872 | const char *name = s->name; |
8a99a385 | 5873 | int constraint = 0; |
252b5132 | 5874 | |
d0bf826b AM |
5875 | if (config.unique_orphan_sections |
5876 | || unique_section_p (s, NULL)) | |
8a99a385 | 5877 | constraint = SPECIAL; |
bcacc0f5 | 5878 | |
8a99a385 | 5879 | if (!ldemul_place_orphan (s, name, constraint)) |
bcacc0f5 AM |
5880 | { |
5881 | lang_output_section_statement_type *os; | |
8a99a385 AM |
5882 | os = lang_output_section_statement_lookup (name, |
5883 | constraint, | |
bcacc0f5 AM |
5884 | TRUE); |
5885 | lang_add_section (&os->children, s, os); | |
5886 | } | |
252b5132 RH |
5887 | } |
5888 | } | |
5889 | } | |
5890 | } | |
5891 | } | |
5892 | ||
252b5132 | 5893 | void |
1579bae1 | 5894 | lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert) |
252b5132 | 5895 | { |
aa8804e4 | 5896 | flagword *ptr_flags; |
252b5132 | 5897 | |
aa8804e4 | 5898 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
252b5132 RH |
5899 | while (*flags) |
5900 | { | |
5901 | switch (*flags) | |
5902 | { | |
252b5132 RH |
5903 | case 'A': case 'a': |
5904 | *ptr_flags |= SEC_ALLOC; | |
5905 | break; | |
5906 | ||
5907 | case 'R': case 'r': | |
5908 | *ptr_flags |= SEC_READONLY; | |
5909 | break; | |
5910 | ||
5911 | case 'W': case 'w': | |
5912 | *ptr_flags |= SEC_DATA; | |
5913 | break; | |
5914 | ||
5915 | case 'X': case 'x': | |
5916 | *ptr_flags |= SEC_CODE; | |
5917 | break; | |
5918 | ||
5919 | case 'L': case 'l': | |
5920 | case 'I': case 'i': | |
5921 | *ptr_flags |= SEC_LOAD; | |
5922 | break; | |
5923 | ||
5924 | default: | |
5925 | einfo (_("%P%F: invalid syntax in flags\n")); | |
5926 | break; | |
5927 | } | |
5928 | flags++; | |
5929 | } | |
5930 | } | |
5931 | ||
5932 | /* Call a function on each input file. This function will be called | |
5933 | on an archive, but not on the elements. */ | |
5934 | ||
5935 | void | |
1579bae1 | 5936 | lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
252b5132 RH |
5937 | { |
5938 | lang_input_statement_type *f; | |
5939 | ||
5940 | for (f = (lang_input_statement_type *) input_file_chain.head; | |
5941 | f != NULL; | |
5942 | f = (lang_input_statement_type *) f->next_real_file) | |
5943 | func (f); | |
5944 | } | |
5945 | ||
5946 | /* Call a function on each file. The function will be called on all | |
5947 | the elements of an archive which are included in the link, but will | |
5948 | not be called on the archive file itself. */ | |
5949 | ||
5950 | void | |
1579bae1 | 5951 | lang_for_each_file (void (*func) (lang_input_statement_type *)) |
252b5132 | 5952 | { |
e50d8076 | 5953 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 RH |
5954 | { |
5955 | func (f); | |
5956 | } | |
5957 | } | |
5958 | ||
252b5132 | 5959 | void |
1579bae1 | 5960 | ldlang_add_file (lang_input_statement_type *entry) |
252b5132 | 5961 | { |
252b5132 RH |
5962 | lang_statement_append (&file_chain, |
5963 | (lang_statement_union_type *) entry, | |
5964 | &entry->next); | |
5965 | ||
5966 | /* The BFD linker needs to have a list of all input BFDs involved in | |
5967 | a link. */ | |
1579bae1 | 5968 | ASSERT (entry->the_bfd->link_next == NULL); |
f13a99db | 5969 | ASSERT (entry->the_bfd != link_info.output_bfd); |
a9a4c53e AM |
5970 | |
5971 | *link_info.input_bfds_tail = entry->the_bfd; | |
5972 | link_info.input_bfds_tail = &entry->the_bfd->link_next; | |
1579bae1 | 5973 | entry->the_bfd->usrdata = entry; |
252b5132 RH |
5974 | bfd_set_gp_size (entry->the_bfd, g_switch_value); |
5975 | ||
5976 | /* Look through the sections and check for any which should not be | |
5977 | included in the link. We need to do this now, so that we can | |
5978 | notice when the backend linker tries to report multiple | |
5979 | definition errors for symbols which are in sections we aren't | |
5980 | going to link. FIXME: It might be better to entirely ignore | |
5981 | symbols which are defined in sections which are going to be | |
5982 | discarded. This would require modifying the backend linker for | |
5983 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
5984 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
5985 | ||
1579bae1 | 5986 | bfd_map_over_sections (entry->the_bfd, section_already_linked, entry); |
252b5132 RH |
5987 | } |
5988 | ||
5989 | void | |
1579bae1 | 5990 | lang_add_output (const char *name, int from_script) |
252b5132 RH |
5991 | { |
5992 | /* Make -o on command line override OUTPUT in script. */ | |
7c519c12 | 5993 | if (!had_output_filename || !from_script) |
252b5132 RH |
5994 | { |
5995 | output_filename = name; | |
b34976b6 | 5996 | had_output_filename = TRUE; |
252b5132 RH |
5997 | } |
5998 | } | |
5999 | ||
252b5132 RH |
6000 | static lang_output_section_statement_type *current_section; |
6001 | ||
6002 | static int | |
1579bae1 | 6003 | topower (int x) |
252b5132 RH |
6004 | { |
6005 | unsigned int i = 1; | |
6006 | int l; | |
6007 | ||
6008 | if (x < 0) | |
6009 | return -1; | |
6010 | ||
5f992e62 | 6011 | for (l = 0; l < 32; l++) |
252b5132 RH |
6012 | { |
6013 | if (i >= (unsigned int) x) | |
6014 | return l; | |
6015 | i <<= 1; | |
6016 | } | |
6017 | ||
6018 | return 0; | |
6019 | } | |
6020 | ||
aea4bd9d | 6021 | lang_output_section_statement_type * |
1579bae1 AM |
6022 | lang_enter_output_section_statement (const char *output_section_statement_name, |
6023 | etree_type *address_exp, | |
6024 | enum section_type sectype, | |
1579bae1 AM |
6025 | etree_type *align, |
6026 | etree_type *subalign, | |
0841712e JJ |
6027 | etree_type *ebase, |
6028 | int constraint) | |
252b5132 RH |
6029 | { |
6030 | lang_output_section_statement_type *os; | |
6031 | ||
66c103b7 AM |
6032 | os = lang_output_section_statement_lookup (output_section_statement_name, |
6033 | constraint, TRUE); | |
967928e9 | 6034 | current_section = os; |
252b5132 | 6035 | |
1579bae1 | 6036 | if (os->addr_tree == NULL) |
08da4cac KH |
6037 | { |
6038 | os->addr_tree = address_exp; | |
6039 | } | |
252b5132 RH |
6040 | os->sectype = sectype; |
6041 | if (sectype != noload_section) | |
6042 | os->flags = SEC_NO_FLAGS; | |
6043 | else | |
6044 | os->flags = SEC_NEVER_LOAD; | |
e5caa5e0 | 6045 | os->block_value = 1; |
66c103b7 AM |
6046 | |
6047 | /* Make next things chain into subchain of this. */ | |
bde18da4 | 6048 | push_stat_ptr (&os->children); |
252b5132 | 6049 | |
08da4cac | 6050 | os->subsection_alignment = |
e9ee469a | 6051 | topower (exp_get_value_int (subalign, -1, "subsection alignment")); |
08da4cac | 6052 | os->section_alignment = |
e9ee469a | 6053 | topower (exp_get_value_int (align, -1, "section alignment")); |
252b5132 RH |
6054 | |
6055 | os->load_base = ebase; | |
aea4bd9d | 6056 | return os; |
252b5132 RH |
6057 | } |
6058 | ||
252b5132 | 6059 | void |
1579bae1 | 6060 | lang_final (void) |
252b5132 | 6061 | { |
d3ce72d0 NC |
6062 | lang_output_statement_type *new_stmt; |
6063 | ||
6064 | new_stmt = new_stat (lang_output_statement, stat_ptr); | |
6065 | new_stmt->name = output_filename; | |
252b5132 | 6066 | |
252b5132 RH |
6067 | } |
6068 | ||
08da4cac KH |
6069 | /* Reset the current counters in the regions. */ |
6070 | ||
e3dc8847 | 6071 | void |
1579bae1 | 6072 | lang_reset_memory_regions (void) |
252b5132 RH |
6073 | { |
6074 | lang_memory_region_type *p = lang_memory_region_list; | |
b3327aad | 6075 | asection *o; |
e9ee469a | 6076 | lang_output_section_statement_type *os; |
252b5132 | 6077 | |
1579bae1 | 6078 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 | 6079 | { |
252b5132 | 6080 | p->current = p->origin; |
66e28d60 | 6081 | p->last_os = NULL; |
252b5132 | 6082 | } |
b3327aad | 6083 | |
e9ee469a AM |
6084 | for (os = &lang_output_section_statement.head->output_section_statement; |
6085 | os != NULL; | |
6086 | os = os->next) | |
cde9e0be AM |
6087 | { |
6088 | os->processed_vma = FALSE; | |
6089 | os->processed_lma = FALSE; | |
6090 | } | |
e9ee469a | 6091 | |
f13a99db | 6092 | for (o = link_info.output_bfd->sections; o != NULL; o = o->next) |
1a23a9e6 AM |
6093 | { |
6094 | /* Save the last size for possible use by bfd_relax_section. */ | |
6095 | o->rawsize = o->size; | |
6096 | o->size = 0; | |
6097 | } | |
252b5132 RH |
6098 | } |
6099 | ||
164e712d | 6100 | /* Worker for lang_gc_sections_1. */ |
252b5132 RH |
6101 | |
6102 | static void | |
1579bae1 AM |
6103 | gc_section_callback (lang_wild_statement_type *ptr, |
6104 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
6105 | asection *section, | |
6106 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
6107 | void *data ATTRIBUTE_UNUSED) | |
252b5132 | 6108 | { |
164e712d AM |
6109 | /* If the wild pattern was marked KEEP, the member sections |
6110 | should be as well. */ | |
4dec4d4e RH |
6111 | if (ptr->keep_sections) |
6112 | section->flags |= SEC_KEEP; | |
252b5132 RH |
6113 | } |
6114 | ||
252b5132 RH |
6115 | /* Iterate over sections marking them against GC. */ |
6116 | ||
6117 | static void | |
1579bae1 | 6118 | lang_gc_sections_1 (lang_statement_union_type *s) |
252b5132 | 6119 | { |
1579bae1 | 6120 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
6121 | { |
6122 | switch (s->header.type) | |
6123 | { | |
6124 | case lang_wild_statement_enum: | |
164e712d | 6125 | walk_wild (&s->wild_statement, gc_section_callback, NULL); |
abc6ab0a | 6126 | break; |
252b5132 RH |
6127 | case lang_constructors_statement_enum: |
6128 | lang_gc_sections_1 (constructor_list.head); | |
6129 | break; | |
6130 | case lang_output_section_statement_enum: | |
6131 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
6132 | break; | |
6133 | case lang_group_statement_enum: | |
6134 | lang_gc_sections_1 (s->group_statement.children.head); | |
6135 | break; | |
6136 | default: | |
6137 | break; | |
6138 | } | |
6139 | } | |
6140 | } | |
6141 | ||
6142 | static void | |
1579bae1 | 6143 | lang_gc_sections (void) |
252b5132 | 6144 | { |
252b5132 RH |
6145 | /* Keep all sections so marked in the link script. */ |
6146 | ||
6147 | lang_gc_sections_1 (statement_list.head); | |
6148 | ||
9ca57817 AM |
6149 | /* SEC_EXCLUDE is ignored when doing a relocatable link, except in |
6150 | the special case of debug info. (See bfd/stabs.c) | |
6151 | Twiddle the flag here, to simplify later linker code. */ | |
6152 | if (link_info.relocatable) | |
6153 | { | |
6154 | LANG_FOR_EACH_INPUT_STATEMENT (f) | |
6155 | { | |
6156 | asection *sec; | |
6157 | for (sec = f->the_bfd->sections; sec != NULL; sec = sec->next) | |
6158 | if ((sec->flags & SEC_DEBUGGING) == 0) | |
6159 | sec->flags &= ~SEC_EXCLUDE; | |
6160 | } | |
6161 | } | |
6162 | ||
57316bff | 6163 | if (link_info.gc_sections) |
f13a99db | 6164 | bfd_gc_sections (link_info.output_bfd, &link_info); |
252b5132 RH |
6165 | } |
6166 | ||
b10a8ae0 L |
6167 | /* Worker for lang_find_relro_sections_1. */ |
6168 | ||
6169 | static void | |
6170 | find_relro_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED, | |
6171 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
6172 | asection *section, | |
6173 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
6174 | void *data) | |
6175 | { | |
6176 | /* Discarded, excluded and ignored sections effectively have zero | |
6177 | size. */ | |
6178 | if (section->output_section != NULL | |
f13a99db | 6179 | && section->output_section->owner == link_info.output_bfd |
b10a8ae0 L |
6180 | && (section->output_section->flags & SEC_EXCLUDE) == 0 |
6181 | && !IGNORE_SECTION (section) | |
6182 | && section->size != 0) | |
6183 | { | |
6184 | bfd_boolean *has_relro_section = (bfd_boolean *) data; | |
6185 | *has_relro_section = TRUE; | |
6186 | } | |
6187 | } | |
6188 | ||
6189 | /* Iterate over sections for relro sections. */ | |
6190 | ||
6191 | static void | |
6192 | lang_find_relro_sections_1 (lang_statement_union_type *s, | |
6193 | bfd_boolean *has_relro_section) | |
6194 | { | |
6195 | if (*has_relro_section) | |
6196 | return; | |
6197 | ||
6198 | for (; s != NULL; s = s->header.next) | |
6199 | { | |
6200 | if (s == expld.dataseg.relro_end_stat) | |
6201 | break; | |
6202 | ||
6203 | switch (s->header.type) | |
6204 | { | |
6205 | case lang_wild_statement_enum: | |
6206 | walk_wild (&s->wild_statement, | |
6207 | find_relro_section_callback, | |
6208 | has_relro_section); | |
6209 | break; | |
6210 | case lang_constructors_statement_enum: | |
6211 | lang_find_relro_sections_1 (constructor_list.head, | |
6212 | has_relro_section); | |
6213 | break; | |
6214 | case lang_output_section_statement_enum: | |
6215 | lang_find_relro_sections_1 (s->output_section_statement.children.head, | |
6216 | has_relro_section); | |
6217 | break; | |
6218 | case lang_group_statement_enum: | |
6219 | lang_find_relro_sections_1 (s->group_statement.children.head, | |
6220 | has_relro_section); | |
6221 | break; | |
6222 | default: | |
6223 | break; | |
6224 | } | |
6225 | } | |
6226 | } | |
6227 | ||
6228 | static void | |
6229 | lang_find_relro_sections (void) | |
6230 | { | |
6231 | bfd_boolean has_relro_section = FALSE; | |
6232 | ||
6233 | /* Check all sections in the link script. */ | |
6234 | ||
6235 | lang_find_relro_sections_1 (expld.dataseg.relro_start_stat, | |
6236 | &has_relro_section); | |
6237 | ||
6238 | if (!has_relro_section) | |
6239 | link_info.relro = FALSE; | |
6240 | } | |
6241 | ||
fbbc3759 L |
6242 | /* Relax all sections until bfd_relax_section gives up. */ |
6243 | ||
eaeb0a9d AM |
6244 | void |
6245 | lang_relax_sections (bfd_boolean need_layout) | |
fbbc3759 | 6246 | { |
28d5f677 | 6247 | if (RELAXATION_ENABLED) |
fbbc3759 | 6248 | { |
eaeb0a9d AM |
6249 | /* We may need more than one relaxation pass. */ |
6250 | int i = link_info.relax_pass; | |
fbbc3759 | 6251 | |
eaeb0a9d AM |
6252 | /* The backend can use it to determine the current pass. */ |
6253 | link_info.relax_pass = 0; | |
fbbc3759 | 6254 | |
eaeb0a9d AM |
6255 | while (i--) |
6256 | { | |
6257 | /* Keep relaxing until bfd_relax_section gives up. */ | |
6258 | bfd_boolean relax_again; | |
fbbc3759 | 6259 | |
eaeb0a9d AM |
6260 | link_info.relax_trip = -1; |
6261 | do | |
6262 | { | |
6263 | link_info.relax_trip++; | |
6264 | ||
6265 | /* Note: pe-dll.c does something like this also. If you find | |
6266 | you need to change this code, you probably need to change | |
6267 | pe-dll.c also. DJ */ | |
6268 | ||
6269 | /* Do all the assignments with our current guesses as to | |
6270 | section sizes. */ | |
6271 | lang_do_assignments (); | |
6272 | ||
6273 | /* We must do this after lang_do_assignments, because it uses | |
6274 | size. */ | |
6275 | lang_reset_memory_regions (); | |
6276 | ||
6277 | /* Perform another relax pass - this time we know where the | |
6278 | globals are, so can make a better guess. */ | |
6279 | relax_again = FALSE; | |
6280 | lang_size_sections (&relax_again, FALSE); | |
6281 | } | |
6282 | while (relax_again); | |
6283 | ||
6284 | link_info.relax_pass++; | |
6285 | } | |
6286 | need_layout = TRUE; | |
6287 | } | |
fbbc3759 | 6288 | |
eaeb0a9d AM |
6289 | if (need_layout) |
6290 | { | |
6291 | /* Final extra sizing to report errors. */ | |
6292 | lang_do_assignments (); | |
6293 | lang_reset_memory_regions (); | |
6294 | lang_size_sections (NULL, TRUE); | |
fbbc3759 | 6295 | } |
fbbc3759 L |
6296 | } |
6297 | ||
252b5132 | 6298 | void |
1579bae1 | 6299 | lang_process (void) |
252b5132 | 6300 | { |
55255dae | 6301 | /* Finalize dynamic list. */ |
40b36307 L |
6302 | if (link_info.dynamic_list) |
6303 | lang_finalize_version_expr_head (&link_info.dynamic_list->head); | |
55255dae | 6304 | |
252b5132 RH |
6305 | current_target = default_target; |
6306 | ||
08da4cac KH |
6307 | /* Open the output file. */ |
6308 | lang_for_each_statement (ldlang_open_output); | |
e5caa5e0 | 6309 | init_opb (); |
252b5132 RH |
6310 | |
6311 | ldemul_create_output_section_statements (); | |
6312 | ||
08da4cac | 6313 | /* Add to the hash table all undefineds on the command line. */ |
252b5132 RH |
6314 | lang_place_undefineds (); |
6315 | ||
082b7297 L |
6316 | if (!bfd_section_already_linked_table_init ()) |
6317 | einfo (_("%P%F: Failed to create hash table\n")); | |
9503fd87 | 6318 | |
08da4cac | 6319 | /* Create a bfd for each input file. */ |
252b5132 | 6320 | current_target = default_target; |
b34976b6 | 6321 | open_input_bfds (statement_list.head, FALSE); |
252b5132 | 6322 | |
e3e942e9 AM |
6323 | link_info.gc_sym_list = &entry_symbol; |
6324 | if (entry_symbol.name == NULL) | |
6325 | link_info.gc_sym_list = ldlang_undef_chain_list_head; | |
6326 | ||
252b5132 RH |
6327 | ldemul_after_open (); |
6328 | ||
082b7297 | 6329 | bfd_section_already_linked_table_free (); |
9503fd87 | 6330 | |
252b5132 RH |
6331 | /* Make sure that we're not mixing architectures. We call this |
6332 | after all the input files have been opened, but before we do any | |
6333 | other processing, so that any operations merge_private_bfd_data | |
6334 | does on the output file will be known during the rest of the | |
6335 | link. */ | |
6336 | lang_check (); | |
6337 | ||
6338 | /* Handle .exports instead of a version script if we're told to do so. */ | |
6339 | if (command_line.version_exports_section) | |
6340 | lang_do_version_exports_section (); | |
6341 | ||
6342 | /* Build all sets based on the information gathered from the input | |
6343 | files. */ | |
6344 | ldctor_build_sets (); | |
6345 | ||
6346 | /* Remove unreferenced sections if asked to. */ | |
164e712d | 6347 | lang_gc_sections (); |
252b5132 | 6348 | |
08da4cac | 6349 | /* Size up the common data. */ |
252b5132 RH |
6350 | lang_common (); |
6351 | ||
bcaa7b3e L |
6352 | /* Update wild statements. */ |
6353 | update_wild_statements (statement_list.head); | |
6354 | ||
252b5132 | 6355 | /* Run through the contours of the script and attach input sections |
08da4cac | 6356 | to the correct output sections. */ |
1579bae1 | 6357 | map_input_to_output_sections (statement_list.head, NULL, NULL); |
252b5132 | 6358 | |
53d25da6 AM |
6359 | process_insert_statements (); |
6360 | ||
08da4cac | 6361 | /* Find any sections not attached explicitly and handle them. */ |
252b5132 RH |
6362 | lang_place_orphans (); |
6363 | ||
1049f94e | 6364 | if (! link_info.relocatable) |
862120bd | 6365 | { |
57ceae94 AM |
6366 | asection *found; |
6367 | ||
6368 | /* Merge SEC_MERGE sections. This has to be done after GC of | |
6369 | sections, so that GCed sections are not merged, but before | |
6370 | assigning dynamic symbols, since removing whole input sections | |
6371 | is hard then. */ | |
f13a99db | 6372 | bfd_merge_sections (link_info.output_bfd, &link_info); |
57ceae94 | 6373 | |
862120bd | 6374 | /* Look for a text section and set the readonly attribute in it. */ |
f13a99db | 6375 | found = bfd_get_section_by_name (link_info.output_bfd, ".text"); |
862120bd | 6376 | |
1579bae1 | 6377 | if (found != NULL) |
862120bd AM |
6378 | { |
6379 | if (config.text_read_only) | |
6380 | found->flags |= SEC_READONLY; | |
6381 | else | |
6382 | found->flags &= ~SEC_READONLY; | |
6383 | } | |
6384 | } | |
6385 | ||
6386 | /* Do anything special before sizing sections. This is where ELF | |
6387 | and other back-ends size dynamic sections. */ | |
252b5132 RH |
6388 | ldemul_before_allocation (); |
6389 | ||
6390 | /* We must record the program headers before we try to fix the | |
6391 | section positions, since they will affect SIZEOF_HEADERS. */ | |
6392 | lang_record_phdrs (); | |
6393 | ||
b10a8ae0 L |
6394 | /* Check relro sections. */ |
6395 | if (link_info.relro && ! link_info.relocatable) | |
6396 | lang_find_relro_sections (); | |
6397 | ||
b3327aad | 6398 | /* Size up the sections. */ |
28d5f677 | 6399 | lang_size_sections (NULL, ! RELAXATION_ENABLED); |
b3327aad | 6400 | |
252b5132 | 6401 | /* See if anything special should be done now we know how big |
eaeb0a9d | 6402 | everything is. This is where relaxation is done. */ |
252b5132 RH |
6403 | ldemul_after_allocation (); |
6404 | ||
6405 | /* Fix any .startof. or .sizeof. symbols. */ | |
6406 | lang_set_startof (); | |
6407 | ||
08da4cac KH |
6408 | /* Do all the assignments, now that we know the final resting places |
6409 | of all the symbols. */ | |
252b5132 | 6410 | |
e9ee469a | 6411 | lang_do_assignments (); |
252b5132 | 6412 | |
8ded5a0f AM |
6413 | ldemul_finish (); |
6414 | ||
252b5132 | 6415 | /* Make sure that the section addresses make sense. */ |
662ef24b | 6416 | if (command_line.check_section_addresses) |
252b5132 | 6417 | lang_check_section_addresses (); |
5f992e62 | 6418 | |
750877ba | 6419 | lang_end (); |
252b5132 RH |
6420 | } |
6421 | ||
6422 | /* EXPORTED TO YACC */ | |
6423 | ||
6424 | void | |
1579bae1 AM |
6425 | lang_add_wild (struct wildcard_spec *filespec, |
6426 | struct wildcard_list *section_list, | |
6427 | bfd_boolean keep_sections) | |
252b5132 | 6428 | { |
b6bf44ba | 6429 | struct wildcard_list *curr, *next; |
d3ce72d0 | 6430 | lang_wild_statement_type *new_stmt; |
b6bf44ba AM |
6431 | |
6432 | /* Reverse the list as the parser puts it back to front. */ | |
6433 | for (curr = section_list, section_list = NULL; | |
6434 | curr != NULL; | |
6435 | section_list = curr, curr = next) | |
6436 | { | |
6437 | if (curr->spec.name != NULL && strcmp (curr->spec.name, "COMMON") == 0) | |
b34976b6 | 6438 | placed_commons = TRUE; |
252b5132 | 6439 | |
b6bf44ba AM |
6440 | next = curr->next; |
6441 | curr->next = section_list; | |
6442 | } | |
6443 | ||
6444 | if (filespec != NULL && filespec->name != NULL) | |
252b5132 | 6445 | { |
b6bf44ba AM |
6446 | if (strcmp (filespec->name, "*") == 0) |
6447 | filespec->name = NULL; | |
6448 | else if (! wildcardp (filespec->name)) | |
b34976b6 | 6449 | lang_has_input_file = TRUE; |
252b5132 | 6450 | } |
b6bf44ba | 6451 | |
d3ce72d0 NC |
6452 | new_stmt = new_stat (lang_wild_statement, stat_ptr); |
6453 | new_stmt->filename = NULL; | |
6454 | new_stmt->filenames_sorted = FALSE; | |
b6bf44ba | 6455 | if (filespec != NULL) |
252b5132 | 6456 | { |
d3ce72d0 NC |
6457 | new_stmt->filename = filespec->name; |
6458 | new_stmt->filenames_sorted = filespec->sorted == by_name; | |
252b5132 | 6459 | } |
d3ce72d0 NC |
6460 | new_stmt->section_list = section_list; |
6461 | new_stmt->keep_sections = keep_sections; | |
6462 | lang_list_init (&new_stmt->children); | |
6463 | analyze_walk_wild_section_handler (new_stmt); | |
252b5132 RH |
6464 | } |
6465 | ||
6466 | void | |
ba916c8a MM |
6467 | lang_section_start (const char *name, etree_type *address, |
6468 | const segment_type *segment) | |
252b5132 | 6469 | { |
d1778b88 | 6470 | lang_address_statement_type *ad; |
252b5132 | 6471 | |
d1778b88 | 6472 | ad = new_stat (lang_address_statement, stat_ptr); |
252b5132 RH |
6473 | ad->section_name = name; |
6474 | ad->address = address; | |
ba916c8a | 6475 | ad->segment = segment; |
252b5132 RH |
6476 | } |
6477 | ||
6478 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
6479 | because of a -e argument on the command line, or zero if this is | |
6480 | called by ENTRY in a linker script. Command line arguments take | |
6481 | precedence. */ | |
6482 | ||
6483 | void | |
1579bae1 | 6484 | lang_add_entry (const char *name, bfd_boolean cmdline) |
252b5132 | 6485 | { |
e3e942e9 | 6486 | if (entry_symbol.name == NULL |
252b5132 RH |
6487 | || cmdline |
6488 | || ! entry_from_cmdline) | |
6489 | { | |
e3e942e9 | 6490 | entry_symbol.name = name; |
252b5132 RH |
6491 | entry_from_cmdline = cmdline; |
6492 | } | |
6493 | } | |
6494 | ||
a359509e ZW |
6495 | /* Set the default start symbol to NAME. .em files should use this, |
6496 | not lang_add_entry, to override the use of "start" if neither the | |
6497 | linker script nor the command line specifies an entry point. NAME | |
6498 | must be permanently allocated. */ | |
6499 | void | |
6500 | lang_default_entry (const char *name) | |
6501 | { | |
6502 | entry_symbol_default = name; | |
6503 | } | |
6504 | ||
252b5132 | 6505 | void |
1579bae1 | 6506 | lang_add_target (const char *name) |
252b5132 | 6507 | { |
d3ce72d0 | 6508 | lang_target_statement_type *new_stmt; |
252b5132 | 6509 | |
d3ce72d0 NC |
6510 | new_stmt = new_stat (lang_target_statement, stat_ptr); |
6511 | new_stmt->target = name; | |
252b5132 RH |
6512 | } |
6513 | ||
6514 | void | |
1579bae1 | 6515 | lang_add_map (const char *name) |
252b5132 RH |
6516 | { |
6517 | while (*name) | |
6518 | { | |
6519 | switch (*name) | |
6520 | { | |
08da4cac | 6521 | case 'F': |
b34976b6 | 6522 | map_option_f = TRUE; |
252b5132 RH |
6523 | break; |
6524 | } | |
6525 | name++; | |
6526 | } | |
6527 | } | |
6528 | ||
6529 | void | |
1579bae1 | 6530 | lang_add_fill (fill_type *fill) |
252b5132 | 6531 | { |
d3ce72d0 | 6532 | lang_fill_statement_type *new_stmt; |
252b5132 | 6533 | |
d3ce72d0 NC |
6534 | new_stmt = new_stat (lang_fill_statement, stat_ptr); |
6535 | new_stmt->fill = fill; | |
252b5132 RH |
6536 | } |
6537 | ||
6538 | void | |
1579bae1 | 6539 | lang_add_data (int type, union etree_union *exp) |
252b5132 | 6540 | { |
d3ce72d0 | 6541 | lang_data_statement_type *new_stmt; |
252b5132 | 6542 | |
d3ce72d0 NC |
6543 | new_stmt = new_stat (lang_data_statement, stat_ptr); |
6544 | new_stmt->exp = exp; | |
6545 | new_stmt->type = type; | |
252b5132 RH |
6546 | } |
6547 | ||
6548 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
6549 | generate. HOWTO is the corresponding howto structure (we could | |
6550 | look this up, but the caller has already done so). SECTION is the | |
6551 | section to generate a reloc against, or NAME is the name of the | |
6552 | symbol to generate a reloc against. Exactly one of SECTION and | |
6553 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
6554 | ||
6555 | void | |
1579bae1 AM |
6556 | lang_add_reloc (bfd_reloc_code_real_type reloc, |
6557 | reloc_howto_type *howto, | |
6558 | asection *section, | |
6559 | const char *name, | |
6560 | union etree_union *addend) | |
252b5132 RH |
6561 | { |
6562 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
5f992e62 | 6563 | |
252b5132 RH |
6564 | p->reloc = reloc; |
6565 | p->howto = howto; | |
6566 | p->section = section; | |
6567 | p->name = name; | |
6568 | p->addend_exp = addend; | |
6569 | ||
6570 | p->addend_value = 0; | |
6571 | p->output_section = NULL; | |
7fabd029 | 6572 | p->output_offset = 0; |
252b5132 RH |
6573 | } |
6574 | ||
6575 | lang_assignment_statement_type * | |
1579bae1 | 6576 | lang_add_assignment (etree_type *exp) |
252b5132 | 6577 | { |
d3ce72d0 | 6578 | lang_assignment_statement_type *new_stmt; |
252b5132 | 6579 | |
d3ce72d0 NC |
6580 | new_stmt = new_stat (lang_assignment_statement, stat_ptr); |
6581 | new_stmt->exp = exp; | |
6582 | return new_stmt; | |
252b5132 RH |
6583 | } |
6584 | ||
6585 | void | |
1579bae1 | 6586 | lang_add_attribute (enum statement_enum attribute) |
252b5132 | 6587 | { |
bd4d42c1 | 6588 | new_statement (attribute, sizeof (lang_statement_header_type), stat_ptr); |
252b5132 RH |
6589 | } |
6590 | ||
6591 | void | |
1579bae1 | 6592 | lang_startup (const char *name) |
252b5132 | 6593 | { |
1579bae1 | 6594 | if (startup_file != NULL) |
252b5132 | 6595 | { |
4520f868 | 6596 | einfo (_("%P%F: multiple STARTUP files\n")); |
252b5132 RH |
6597 | } |
6598 | first_file->filename = name; | |
6599 | first_file->local_sym_name = name; | |
b34976b6 | 6600 | first_file->real = TRUE; |
252b5132 RH |
6601 | |
6602 | startup_file = name; | |
6603 | } | |
6604 | ||
6605 | void | |
1579bae1 | 6606 | lang_float (bfd_boolean maybe) |
252b5132 RH |
6607 | { |
6608 | lang_float_flag = maybe; | |
6609 | } | |
6610 | ||
ee3cc2e2 RS |
6611 | |
6612 | /* Work out the load- and run-time regions from a script statement, and | |
6613 | store them in *LMA_REGION and *REGION respectively. | |
6614 | ||
a747ee4d NC |
6615 | MEMSPEC is the name of the run-time region, or the value of |
6616 | DEFAULT_MEMORY_REGION if the statement didn't specify one. | |
6617 | LMA_MEMSPEC is the name of the load-time region, or null if the | |
6618 | statement didn't specify one.HAVE_LMA_P is TRUE if the statement | |
6619 | had an explicit load address. | |
ee3cc2e2 RS |
6620 | |
6621 | It is an error to specify both a load region and a load address. */ | |
6622 | ||
6623 | static void | |
6bdafbeb NC |
6624 | lang_get_regions (lang_memory_region_type **region, |
6625 | lang_memory_region_type **lma_region, | |
1579bae1 AM |
6626 | const char *memspec, |
6627 | const char *lma_memspec, | |
6bdafbeb NC |
6628 | bfd_boolean have_lma, |
6629 | bfd_boolean have_vma) | |
ee3cc2e2 | 6630 | { |
a747ee4d | 6631 | *lma_region = lang_memory_region_lookup (lma_memspec, FALSE); |
ee3cc2e2 | 6632 | |
6feb9908 AM |
6633 | /* If no runtime region or VMA has been specified, but the load region |
6634 | has been specified, then use the load region for the runtime region | |
6635 | as well. */ | |
6bdafbeb NC |
6636 | if (lma_memspec != NULL |
6637 | && ! have_vma | |
6638 | && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0) | |
ee3cc2e2 RS |
6639 | *region = *lma_region; |
6640 | else | |
a747ee4d | 6641 | *region = lang_memory_region_lookup (memspec, FALSE); |
ee3cc2e2 | 6642 | |
6bdafbeb | 6643 | if (have_lma && lma_memspec != 0) |
ee3cc2e2 RS |
6644 | einfo (_("%X%P:%S: section has both a load address and a load region\n")); |
6645 | } | |
6646 | ||
252b5132 | 6647 | void |
6bdafbeb NC |
6648 | lang_leave_output_section_statement (fill_type *fill, const char *memspec, |
6649 | lang_output_section_phdr_list *phdrs, | |
6650 | const char *lma_memspec) | |
252b5132 | 6651 | { |
ee3cc2e2 RS |
6652 | lang_get_regions (¤t_section->region, |
6653 | ¤t_section->lma_region, | |
6654 | memspec, lma_memspec, | |
6bdafbeb NC |
6655 | current_section->load_base != NULL, |
6656 | current_section->addr_tree != NULL); | |
113e6845 NS |
6657 | |
6658 | /* If this section has no load region or base, but has the same | |
6659 | region as the previous section, then propagate the previous | |
6660 | section's load region. */ | |
6661 | ||
6662 | if (!current_section->lma_region && !current_section->load_base | |
6663 | && current_section->region == current_section->prev->region) | |
6664 | current_section->lma_region = current_section->prev->lma_region; | |
6665 | ||
252b5132 | 6666 | current_section->fill = fill; |
252b5132 | 6667 | current_section->phdrs = phdrs; |
bde18da4 | 6668 | pop_stat_ptr (); |
252b5132 RH |
6669 | } |
6670 | ||
08da4cac KH |
6671 | /* Create an absolute symbol with the given name with the value of the |
6672 | address of first byte of the section named. | |
6673 | ||
6674 | If the symbol already exists, then do nothing. */ | |
252b5132 | 6675 | |
252b5132 | 6676 | void |
1579bae1 | 6677 | lang_abs_symbol_at_beginning_of (const char *secname, const char *name) |
252b5132 RH |
6678 | { |
6679 | struct bfd_link_hash_entry *h; | |
6680 | ||
b34976b6 | 6681 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 6682 | if (h == NULL) |
252b5132 RH |
6683 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
6684 | ||
6685 | if (h->type == bfd_link_hash_new | |
6686 | || h->type == bfd_link_hash_undefined) | |
6687 | { | |
6688 | asection *sec; | |
6689 | ||
6690 | h->type = bfd_link_hash_defined; | |
6691 | ||
f13a99db | 6692 | sec = bfd_get_section_by_name (link_info.output_bfd, secname); |
1579bae1 | 6693 | if (sec == NULL) |
252b5132 RH |
6694 | h->u.def.value = 0; |
6695 | else | |
f13a99db | 6696 | h->u.def.value = bfd_get_section_vma (link_info.output_bfd, sec); |
252b5132 RH |
6697 | |
6698 | h->u.def.section = bfd_abs_section_ptr; | |
6699 | } | |
6700 | } | |
6701 | ||
08da4cac KH |
6702 | /* Create an absolute symbol with the given name with the value of the |
6703 | address of the first byte after the end of the section named. | |
6704 | ||
6705 | If the symbol already exists, then do nothing. */ | |
252b5132 | 6706 | |
252b5132 | 6707 | void |
1579bae1 | 6708 | lang_abs_symbol_at_end_of (const char *secname, const char *name) |
252b5132 RH |
6709 | { |
6710 | struct bfd_link_hash_entry *h; | |
6711 | ||
b34976b6 | 6712 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 6713 | if (h == NULL) |
252b5132 RH |
6714 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
6715 | ||
6716 | if (h->type == bfd_link_hash_new | |
6717 | || h->type == bfd_link_hash_undefined) | |
6718 | { | |
6719 | asection *sec; | |
6720 | ||
6721 | h->type = bfd_link_hash_defined; | |
6722 | ||
f13a99db | 6723 | sec = bfd_get_section_by_name (link_info.output_bfd, secname); |
1579bae1 | 6724 | if (sec == NULL) |
252b5132 RH |
6725 | h->u.def.value = 0; |
6726 | else | |
f13a99db | 6727 | h->u.def.value = (bfd_get_section_vma (link_info.output_bfd, sec) |
eea6121a | 6728 | + TO_ADDR (sec->size)); |
252b5132 RH |
6729 | |
6730 | h->u.def.section = bfd_abs_section_ptr; | |
6731 | } | |
6732 | } | |
6733 | ||
6734 | void | |
1579bae1 AM |
6735 | lang_statement_append (lang_statement_list_type *list, |
6736 | lang_statement_union_type *element, | |
6737 | lang_statement_union_type **field) | |
252b5132 RH |
6738 | { |
6739 | *(list->tail) = element; | |
6740 | list->tail = field; | |
6741 | } | |
6742 | ||
6743 | /* Set the output format type. -oformat overrides scripts. */ | |
6744 | ||
6745 | void | |
1579bae1 AM |
6746 | lang_add_output_format (const char *format, |
6747 | const char *big, | |
6748 | const char *little, | |
6749 | int from_script) | |
252b5132 RH |
6750 | { |
6751 | if (output_target == NULL || !from_script) | |
6752 | { | |
6753 | if (command_line.endian == ENDIAN_BIG | |
6754 | && big != NULL) | |
6755 | format = big; | |
6756 | else if (command_line.endian == ENDIAN_LITTLE | |
6757 | && little != NULL) | |
6758 | format = little; | |
6759 | ||
6760 | output_target = format; | |
6761 | } | |
6762 | } | |
6763 | ||
53d25da6 AM |
6764 | void |
6765 | lang_add_insert (const char *where, int is_before) | |
6766 | { | |
d3ce72d0 | 6767 | lang_insert_statement_type *new_stmt; |
53d25da6 | 6768 | |
d3ce72d0 NC |
6769 | new_stmt = new_stat (lang_insert_statement, stat_ptr); |
6770 | new_stmt->where = where; | |
6771 | new_stmt->is_before = is_before; | |
53d25da6 AM |
6772 | saved_script_handle = previous_script_handle; |
6773 | } | |
6774 | ||
252b5132 RH |
6775 | /* Enter a group. This creates a new lang_group_statement, and sets |
6776 | stat_ptr to build new statements within the group. */ | |
6777 | ||
6778 | void | |
1579bae1 | 6779 | lang_enter_group (void) |
252b5132 RH |
6780 | { |
6781 | lang_group_statement_type *g; | |
6782 | ||
6783 | g = new_stat (lang_group_statement, stat_ptr); | |
6784 | lang_list_init (&g->children); | |
bde18da4 | 6785 | push_stat_ptr (&g->children); |
252b5132 RH |
6786 | } |
6787 | ||
6788 | /* Leave a group. This just resets stat_ptr to start writing to the | |
6789 | regular list of statements again. Note that this will not work if | |
6790 | groups can occur inside anything else which can adjust stat_ptr, | |
6791 | but currently they can't. */ | |
6792 | ||
6793 | void | |
1579bae1 | 6794 | lang_leave_group (void) |
252b5132 | 6795 | { |
bde18da4 | 6796 | pop_stat_ptr (); |
252b5132 RH |
6797 | } |
6798 | ||
6799 | /* Add a new program header. This is called for each entry in a PHDRS | |
6800 | command in a linker script. */ | |
6801 | ||
6802 | void | |
1579bae1 AM |
6803 | lang_new_phdr (const char *name, |
6804 | etree_type *type, | |
6805 | bfd_boolean filehdr, | |
6806 | bfd_boolean phdrs, | |
6807 | etree_type *at, | |
6808 | etree_type *flags) | |
252b5132 RH |
6809 | { |
6810 | struct lang_phdr *n, **pp; | |
5c1a3f0f | 6811 | bfd_boolean hdrs; |
252b5132 | 6812 | |
1e9cc1c2 | 6813 | n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr)); |
252b5132 RH |
6814 | n->next = NULL; |
6815 | n->name = name; | |
e9ee469a | 6816 | n->type = exp_get_value_int (type, 0, "program header type"); |
252b5132 RH |
6817 | n->filehdr = filehdr; |
6818 | n->phdrs = phdrs; | |
6819 | n->at = at; | |
6820 | n->flags = flags; | |
5c1a3f0f NS |
6821 | |
6822 | hdrs = n->type == 1 && (phdrs || filehdr); | |
252b5132 RH |
6823 | |
6824 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4100cea3 AM |
6825 | if (hdrs |
6826 | && (*pp)->type == 1 | |
6827 | && !((*pp)->filehdr || (*pp)->phdrs)) | |
5c1a3f0f | 6828 | { |
4100cea3 | 6829 | einfo (_("%X%P:%S: PHDRS and FILEHDR are not supported when prior PT_LOAD headers lack them\n")); |
5c1a3f0f NS |
6830 | hdrs = FALSE; |
6831 | } | |
6832 | ||
252b5132 RH |
6833 | *pp = n; |
6834 | } | |
6835 | ||
6836 | /* Record the program header information in the output BFD. FIXME: We | |
6837 | should not be calling an ELF specific function here. */ | |
6838 | ||
6839 | static void | |
1579bae1 | 6840 | lang_record_phdrs (void) |
252b5132 RH |
6841 | { |
6842 | unsigned int alc; | |
6843 | asection **secs; | |
6bdafbeb | 6844 | lang_output_section_phdr_list *last; |
252b5132 | 6845 | struct lang_phdr *l; |
afd7a018 | 6846 | lang_output_section_statement_type *os; |
252b5132 RH |
6847 | |
6848 | alc = 10; | |
1e9cc1c2 | 6849 | secs = (asection **) xmalloc (alc * sizeof (asection *)); |
252b5132 | 6850 | last = NULL; |
591a748a | 6851 | |
252b5132 RH |
6852 | for (l = lang_phdr_list; l != NULL; l = l->next) |
6853 | { | |
6854 | unsigned int c; | |
6855 | flagword flags; | |
6856 | bfd_vma at; | |
6857 | ||
6858 | c = 0; | |
afd7a018 AM |
6859 | for (os = &lang_output_section_statement.head->output_section_statement; |
6860 | os != NULL; | |
6861 | os = os->next) | |
252b5132 | 6862 | { |
6bdafbeb | 6863 | lang_output_section_phdr_list *pl; |
252b5132 | 6864 | |
66c103b7 | 6865 | if (os->constraint < 0) |
0841712e | 6866 | continue; |
252b5132 RH |
6867 | |
6868 | pl = os->phdrs; | |
6869 | if (pl != NULL) | |
6870 | last = pl; | |
6871 | else | |
6872 | { | |
6873 | if (os->sectype == noload_section | |
6874 | || os->bfd_section == NULL | |
6875 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
6876 | continue; | |
591a748a | 6877 | |
7512c397 AM |
6878 | /* Don't add orphans to PT_INTERP header. */ |
6879 | if (l->type == 3) | |
6880 | continue; | |
6881 | ||
e9442572 | 6882 | if (last == NULL) |
591a748a NC |
6883 | { |
6884 | lang_output_section_statement_type * tmp_os; | |
6885 | ||
6886 | /* If we have not run across a section with a program | |
6887 | header assigned to it yet, then scan forwards to find | |
6888 | one. This prevents inconsistencies in the linker's | |
6889 | behaviour when a script has specified just a single | |
6890 | header and there are sections in that script which are | |
6891 | not assigned to it, and which occur before the first | |
6892 | use of that header. See here for more details: | |
6893 | http://sourceware.org/ml/binutils/2007-02/msg00291.html */ | |
6894 | for (tmp_os = os; tmp_os; tmp_os = tmp_os->next) | |
6895 | if (tmp_os->phdrs) | |
e9442572 AM |
6896 | { |
6897 | last = tmp_os->phdrs; | |
6898 | break; | |
6899 | } | |
6900 | if (last == NULL) | |
6901 | einfo (_("%F%P: no sections assigned to phdrs\n")); | |
591a748a | 6902 | } |
e9442572 | 6903 | pl = last; |
252b5132 RH |
6904 | } |
6905 | ||
6906 | if (os->bfd_section == NULL) | |
6907 | continue; | |
6908 | ||
6909 | for (; pl != NULL; pl = pl->next) | |
6910 | { | |
6911 | if (strcmp (pl->name, l->name) == 0) | |
6912 | { | |
6913 | if (c >= alc) | |
6914 | { | |
6915 | alc *= 2; | |
1e9cc1c2 NC |
6916 | secs = (asection **) xrealloc (secs, |
6917 | alc * sizeof (asection *)); | |
252b5132 RH |
6918 | } |
6919 | secs[c] = os->bfd_section; | |
6920 | ++c; | |
b34976b6 | 6921 | pl->used = TRUE; |
252b5132 RH |
6922 | } |
6923 | } | |
6924 | } | |
6925 | ||
6926 | if (l->flags == NULL) | |
6927 | flags = 0; | |
6928 | else | |
e9ee469a | 6929 | flags = exp_get_vma (l->flags, 0, "phdr flags"); |
252b5132 RH |
6930 | |
6931 | if (l->at == NULL) | |
6932 | at = 0; | |
6933 | else | |
e9ee469a | 6934 | at = exp_get_vma (l->at, 0, "phdr load address"); |
252b5132 | 6935 | |
f13a99db | 6936 | if (! bfd_record_phdr (link_info.output_bfd, l->type, |
d1778b88 | 6937 | l->flags != NULL, flags, l->at != NULL, |
252b5132 RH |
6938 | at, l->filehdr, l->phdrs, c, secs)) |
6939 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); | |
6940 | } | |
6941 | ||
6942 | free (secs); | |
6943 | ||
6944 | /* Make sure all the phdr assignments succeeded. */ | |
afd7a018 AM |
6945 | for (os = &lang_output_section_statement.head->output_section_statement; |
6946 | os != NULL; | |
6947 | os = os->next) | |
252b5132 | 6948 | { |
6bdafbeb | 6949 | lang_output_section_phdr_list *pl; |
252b5132 | 6950 | |
66c103b7 | 6951 | if (os->constraint < 0 |
afd7a018 | 6952 | || os->bfd_section == NULL) |
252b5132 RH |
6953 | continue; |
6954 | ||
afd7a018 | 6955 | for (pl = os->phdrs; |
252b5132 RH |
6956 | pl != NULL; |
6957 | pl = pl->next) | |
6958 | if (! pl->used && strcmp (pl->name, "NONE") != 0) | |
6959 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), | |
afd7a018 | 6960 | os->name, pl->name); |
252b5132 RH |
6961 | } |
6962 | } | |
6963 | ||
6964 | /* Record a list of sections which may not be cross referenced. */ | |
6965 | ||
6966 | void | |
6bdafbeb | 6967 | lang_add_nocrossref (lang_nocrossref_type *l) |
252b5132 RH |
6968 | { |
6969 | struct lang_nocrossrefs *n; | |
6970 | ||
1e9cc1c2 | 6971 | n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); |
252b5132 RH |
6972 | n->next = nocrossref_list; |
6973 | n->list = l; | |
6974 | nocrossref_list = n; | |
6975 | ||
6976 | /* Set notice_all so that we get informed about all symbols. */ | |
b34976b6 | 6977 | link_info.notice_all = TRUE; |
252b5132 RH |
6978 | } |
6979 | \f | |
6980 | /* Overlay handling. We handle overlays with some static variables. */ | |
6981 | ||
6982 | /* The overlay virtual address. */ | |
6983 | static etree_type *overlay_vma; | |
7e7d5768 AM |
6984 | /* And subsection alignment. */ |
6985 | static etree_type *overlay_subalign; | |
252b5132 | 6986 | |
252b5132 RH |
6987 | /* An expression for the maximum section size seen so far. */ |
6988 | static etree_type *overlay_max; | |
6989 | ||
6990 | /* A list of all the sections in this overlay. */ | |
6991 | ||
89cdebba | 6992 | struct overlay_list { |
252b5132 RH |
6993 | struct overlay_list *next; |
6994 | lang_output_section_statement_type *os; | |
6995 | }; | |
6996 | ||
6997 | static struct overlay_list *overlay_list; | |
6998 | ||
6999 | /* Start handling an overlay. */ | |
7000 | ||
7001 | void | |
7e7d5768 | 7002 | lang_enter_overlay (etree_type *vma_expr, etree_type *subalign) |
252b5132 RH |
7003 | { |
7004 | /* The grammar should prevent nested overlays from occurring. */ | |
7e7d5768 AM |
7005 | ASSERT (overlay_vma == NULL |
7006 | && overlay_subalign == NULL | |
7007 | && overlay_max == NULL); | |
252b5132 RH |
7008 | |
7009 | overlay_vma = vma_expr; | |
7e7d5768 | 7010 | overlay_subalign = subalign; |
252b5132 RH |
7011 | } |
7012 | ||
7013 | /* Start a section in an overlay. We handle this by calling | |
9f88b410 RS |
7014 | lang_enter_output_section_statement with the correct VMA. |
7015 | lang_leave_overlay sets up the LMA and memory regions. */ | |
252b5132 RH |
7016 | |
7017 | void | |
1579bae1 | 7018 | lang_enter_overlay_section (const char *name) |
252b5132 RH |
7019 | { |
7020 | struct overlay_list *n; | |
7021 | etree_type *size; | |
7022 | ||
152d792f | 7023 | lang_enter_output_section_statement (name, overlay_vma, overlay_section, |
0841712e | 7024 | 0, overlay_subalign, 0, 0); |
252b5132 | 7025 | |
9f88b410 | 7026 | /* If this is the first section, then base the VMA of future |
252b5132 RH |
7027 | sections on this one. This will work correctly even if `.' is |
7028 | used in the addresses. */ | |
7029 | if (overlay_list == NULL) | |
9f88b410 | 7030 | overlay_vma = exp_nameop (ADDR, name); |
252b5132 RH |
7031 | |
7032 | /* Remember the section. */ | |
1e9cc1c2 | 7033 | n = (struct overlay_list *) xmalloc (sizeof *n); |
252b5132 RH |
7034 | n->os = current_section; |
7035 | n->next = overlay_list; | |
7036 | overlay_list = n; | |
7037 | ||
7038 | size = exp_nameop (SIZEOF, name); | |
7039 | ||
252b5132 RH |
7040 | /* Arrange to work out the maximum section end address. */ |
7041 | if (overlay_max == NULL) | |
7042 | overlay_max = size; | |
7043 | else | |
7044 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
7045 | } | |
7046 | ||
7047 | /* Finish a section in an overlay. There isn't any special to do | |
7048 | here. */ | |
7049 | ||
7050 | void | |
1579bae1 | 7051 | lang_leave_overlay_section (fill_type *fill, |
6bdafbeb | 7052 | lang_output_section_phdr_list *phdrs) |
252b5132 RH |
7053 | { |
7054 | const char *name; | |
7055 | char *clean, *s2; | |
7056 | const char *s1; | |
7057 | char *buf; | |
7058 | ||
7059 | name = current_section->name; | |
7060 | ||
a747ee4d NC |
7061 | /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory |
7062 | region and that no load-time region has been specified. It doesn't | |
7063 | really matter what we say here, since lang_leave_overlay will | |
7064 | override it. */ | |
7065 | lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0); | |
252b5132 RH |
7066 | |
7067 | /* Define the magic symbols. */ | |
7068 | ||
1e9cc1c2 | 7069 | clean = (char *) xmalloc (strlen (name) + 1); |
252b5132 RH |
7070 | s2 = clean; |
7071 | for (s1 = name; *s1 != '\0'; s1++) | |
3882b010 | 7072 | if (ISALNUM (*s1) || *s1 == '_') |
252b5132 RH |
7073 | *s2++ = *s1; |
7074 | *s2 = '\0'; | |
7075 | ||
1e9cc1c2 | 7076 | buf = (char *) xmalloc (strlen (clean) + sizeof "__load_start_"); |
252b5132 | 7077 | sprintf (buf, "__load_start_%s", clean); |
34711ca3 AM |
7078 | lang_add_assignment (exp_provide (buf, |
7079 | exp_nameop (LOADADDR, name), | |
7080 | FALSE)); | |
252b5132 | 7081 | |
1e9cc1c2 | 7082 | buf = (char *) xmalloc (strlen (clean) + sizeof "__load_stop_"); |
252b5132 | 7083 | sprintf (buf, "__load_stop_%s", clean); |
34711ca3 AM |
7084 | lang_add_assignment (exp_provide (buf, |
7085 | exp_binop ('+', | |
7086 | exp_nameop (LOADADDR, name), | |
7087 | exp_nameop (SIZEOF, name)), | |
7088 | FALSE)); | |
252b5132 RH |
7089 | |
7090 | free (clean); | |
7091 | } | |
7092 | ||
7093 | /* Finish an overlay. If there are any overlay wide settings, this | |
7094 | looks through all the sections in the overlay and sets them. */ | |
7095 | ||
7096 | void | |
1579bae1 AM |
7097 | lang_leave_overlay (etree_type *lma_expr, |
7098 | int nocrossrefs, | |
7099 | fill_type *fill, | |
7100 | const char *memspec, | |
6bdafbeb | 7101 | lang_output_section_phdr_list *phdrs, |
1579bae1 | 7102 | const char *lma_memspec) |
252b5132 RH |
7103 | { |
7104 | lang_memory_region_type *region; | |
562d3460 | 7105 | lang_memory_region_type *lma_region; |
252b5132 | 7106 | struct overlay_list *l; |
6bdafbeb | 7107 | lang_nocrossref_type *nocrossref; |
252b5132 | 7108 | |
ee3cc2e2 RS |
7109 | lang_get_regions (®ion, &lma_region, |
7110 | memspec, lma_memspec, | |
6bdafbeb | 7111 | lma_expr != NULL, FALSE); |
562d3460 | 7112 | |
252b5132 RH |
7113 | nocrossref = NULL; |
7114 | ||
9f88b410 RS |
7115 | /* After setting the size of the last section, set '.' to end of the |
7116 | overlay region. */ | |
7117 | if (overlay_list != NULL) | |
7118 | overlay_list->os->update_dot_tree | |
7119 | = exp_assop ('=', ".", exp_binop ('+', overlay_vma, overlay_max)); | |
7120 | ||
252b5132 RH |
7121 | l = overlay_list; |
7122 | while (l != NULL) | |
7123 | { | |
7124 | struct overlay_list *next; | |
7125 | ||
1579bae1 | 7126 | if (fill != NULL && l->os->fill == NULL) |
252b5132 | 7127 | l->os->fill = fill; |
1545243b | 7128 | |
9f88b410 RS |
7129 | l->os->region = region; |
7130 | l->os->lma_region = lma_region; | |
7131 | ||
7132 | /* The first section has the load address specified in the | |
7133 | OVERLAY statement. The rest are worked out from that. | |
7134 | The base address is not needed (and should be null) if | |
7135 | an LMA region was specified. */ | |
7136 | if (l->next == 0) | |
152d792f AM |
7137 | { |
7138 | l->os->load_base = lma_expr; | |
7139 | l->os->sectype = normal_section; | |
7140 | } | |
252b5132 RH |
7141 | if (phdrs != NULL && l->os->phdrs == NULL) |
7142 | l->os->phdrs = phdrs; | |
7143 | ||
9f88b410 | 7144 | if (nocrossrefs) |
252b5132 | 7145 | { |
6bdafbeb | 7146 | lang_nocrossref_type *nc; |
252b5132 | 7147 | |
1e9cc1c2 | 7148 | nc = (lang_nocrossref_type *) xmalloc (sizeof *nc); |
252b5132 RH |
7149 | nc->name = l->os->name; |
7150 | nc->next = nocrossref; | |
7151 | nocrossref = nc; | |
7152 | } | |
7153 | ||
7154 | next = l->next; | |
7155 | free (l); | |
7156 | l = next; | |
7157 | } | |
7158 | ||
7159 | if (nocrossref != NULL) | |
7160 | lang_add_nocrossref (nocrossref); | |
7161 | ||
252b5132 | 7162 | overlay_vma = NULL; |
252b5132 RH |
7163 | overlay_list = NULL; |
7164 | overlay_max = NULL; | |
7165 | } | |
7166 | \f | |
7167 | /* Version handling. This is only useful for ELF. */ | |
7168 | ||
7169 | /* This global variable holds the version tree that we build. */ | |
7170 | ||
7171 | struct bfd_elf_version_tree *lang_elf_version_info; | |
7172 | ||
108ba305 JJ |
7173 | /* If PREV is NULL, return first version pattern matching particular symbol. |
7174 | If PREV is non-NULL, return first version pattern matching particular | |
7175 | symbol after PREV (previously returned by lang_vers_match). */ | |
252b5132 | 7176 | |
108ba305 JJ |
7177 | static struct bfd_elf_version_expr * |
7178 | lang_vers_match (struct bfd_elf_version_expr_head *head, | |
7179 | struct bfd_elf_version_expr *prev, | |
7180 | const char *sym) | |
252b5132 | 7181 | { |
108ba305 JJ |
7182 | const char *cxx_sym = sym; |
7183 | const char *java_sym = sym; | |
7184 | struct bfd_elf_version_expr *expr = NULL; | |
252b5132 | 7185 | |
108ba305 | 7186 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) |
252b5132 | 7187 | { |
2f97444a | 7188 | cxx_sym = cplus_demangle (sym, DMGL_PARAMS | DMGL_ANSI); |
108ba305 JJ |
7189 | if (!cxx_sym) |
7190 | cxx_sym = sym; | |
252b5132 | 7191 | } |
df816215 | 7192 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) |
252b5132 | 7193 | { |
108ba305 JJ |
7194 | java_sym = cplus_demangle (sym, DMGL_JAVA); |
7195 | if (!java_sym) | |
7196 | java_sym = sym; | |
252b5132 RH |
7197 | } |
7198 | ||
ae5a3597 | 7199 | if (head->htab && (prev == NULL || prev->literal)) |
252b5132 | 7200 | { |
108ba305 JJ |
7201 | struct bfd_elf_version_expr e; |
7202 | ||
7203 | switch (prev ? prev->mask : 0) | |
7204 | { | |
967928e9 AM |
7205 | case 0: |
7206 | if (head->mask & BFD_ELF_VERSION_C_TYPE) | |
7207 | { | |
ae5a3597 | 7208 | e.pattern = sym; |
1e9cc1c2 NC |
7209 | expr = (struct bfd_elf_version_expr *) |
7210 | htab_find ((htab_t) head->htab, &e); | |
ae5a3597 | 7211 | while (expr && strcmp (expr->pattern, sym) == 0) |
967928e9 AM |
7212 | if (expr->mask == BFD_ELF_VERSION_C_TYPE) |
7213 | goto out_ret; | |
7214 | else | |
7215 | expr = expr->next; | |
7216 | } | |
7217 | /* Fallthrough */ | |
7218 | case BFD_ELF_VERSION_C_TYPE: | |
7219 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) | |
7220 | { | |
ae5a3597 | 7221 | e.pattern = cxx_sym; |
1e9cc1c2 NC |
7222 | expr = (struct bfd_elf_version_expr *) |
7223 | htab_find ((htab_t) head->htab, &e); | |
ae5a3597 | 7224 | while (expr && strcmp (expr->pattern, cxx_sym) == 0) |
967928e9 AM |
7225 | if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) |
7226 | goto out_ret; | |
7227 | else | |
7228 | expr = expr->next; | |
7229 | } | |
7230 | /* Fallthrough */ | |
7231 | case BFD_ELF_VERSION_CXX_TYPE: | |
7232 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) | |
7233 | { | |
ae5a3597 | 7234 | e.pattern = java_sym; |
1e9cc1c2 NC |
7235 | expr = (struct bfd_elf_version_expr *) |
7236 | htab_find ((htab_t) head->htab, &e); | |
ae5a3597 | 7237 | while (expr && strcmp (expr->pattern, java_sym) == 0) |
967928e9 AM |
7238 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) |
7239 | goto out_ret; | |
7240 | else | |
7241 | expr = expr->next; | |
7242 | } | |
7243 | /* Fallthrough */ | |
7244 | default: | |
7245 | break; | |
108ba305 | 7246 | } |
252b5132 | 7247 | } |
108ba305 JJ |
7248 | |
7249 | /* Finally, try the wildcards. */ | |
ae5a3597 | 7250 | if (prev == NULL || prev->literal) |
108ba305 | 7251 | expr = head->remaining; |
252b5132 | 7252 | else |
108ba305 | 7253 | expr = prev->next; |
86043bbb | 7254 | for (; expr; expr = expr->next) |
252b5132 | 7255 | { |
108ba305 JJ |
7256 | const char *s; |
7257 | ||
86043bbb MM |
7258 | if (!expr->pattern) |
7259 | continue; | |
7260 | ||
108ba305 JJ |
7261 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') |
7262 | break; | |
7263 | ||
7264 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) | |
7265 | s = java_sym; | |
7266 | else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) | |
7267 | s = cxx_sym; | |
7268 | else | |
7269 | s = sym; | |
5e35cbc2 | 7270 | if (fnmatch (expr->pattern, s, 0) == 0) |
108ba305 | 7271 | break; |
252b5132 RH |
7272 | } |
7273 | ||
967928e9 | 7274 | out_ret: |
108ba305 JJ |
7275 | if (cxx_sym != sym) |
7276 | free ((char *) cxx_sym); | |
7277 | if (java_sym != sym) | |
7278 | free ((char *) java_sym); | |
7279 | return expr; | |
252b5132 RH |
7280 | } |
7281 | ||
5e35cbc2 | 7282 | /* Return NULL if the PATTERN argument is a glob pattern, otherwise, |
ae5a3597 | 7283 | return a pointer to the symbol name with any backslash quotes removed. */ |
5e35cbc2 L |
7284 | |
7285 | static const char * | |
7286 | realsymbol (const char *pattern) | |
7287 | { | |
7288 | const char *p; | |
7289 | bfd_boolean changed = FALSE, backslash = FALSE; | |
1e9cc1c2 | 7290 | char *s, *symbol = (char *) xmalloc (strlen (pattern) + 1); |
5e35cbc2 L |
7291 | |
7292 | for (p = pattern, s = symbol; *p != '\0'; ++p) | |
7293 | { | |
7294 | /* It is a glob pattern only if there is no preceding | |
7295 | backslash. */ | |
5e35cbc2 L |
7296 | if (backslash) |
7297 | { | |
7298 | /* Remove the preceding backslash. */ | |
7299 | *(s - 1) = *p; | |
ae5a3597 | 7300 | backslash = FALSE; |
5e35cbc2 L |
7301 | changed = TRUE; |
7302 | } | |
7303 | else | |
ae5a3597 AM |
7304 | { |
7305 | if (*p == '?' || *p == '*' || *p == '[') | |
7306 | { | |
7307 | free (symbol); | |
7308 | return NULL; | |
7309 | } | |
5e35cbc2 | 7310 | |
ae5a3597 AM |
7311 | *s++ = *p; |
7312 | backslash = *p == '\\'; | |
7313 | } | |
5e35cbc2 L |
7314 | } |
7315 | ||
7316 | if (changed) | |
7317 | { | |
7318 | *s = '\0'; | |
7319 | return symbol; | |
7320 | } | |
7321 | else | |
7322 | { | |
7323 | free (symbol); | |
7324 | return pattern; | |
7325 | } | |
7326 | } | |
7327 | ||
d3ce72d0 | 7328 | /* This is called for each variable name or match expression. NEW_NAME is |
86043bbb MM |
7329 | the name of the symbol to match, or, if LITERAL_P is FALSE, a glob |
7330 | pattern to be matched against symbol names. */ | |
252b5132 RH |
7331 | |
7332 | struct bfd_elf_version_expr * | |
1579bae1 | 7333 | lang_new_vers_pattern (struct bfd_elf_version_expr *orig, |
d3ce72d0 | 7334 | const char *new_name, |
86043bbb MM |
7335 | const char *lang, |
7336 | bfd_boolean literal_p) | |
252b5132 RH |
7337 | { |
7338 | struct bfd_elf_version_expr *ret; | |
7339 | ||
d3ce72d0 | 7340 | ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); |
252b5132 | 7341 | ret->next = orig; |
31941635 L |
7342 | ret->symver = 0; |
7343 | ret->script = 0; | |
ae5a3597 | 7344 | ret->literal = TRUE; |
d3ce72d0 | 7345 | ret->pattern = literal_p ? new_name : realsymbol (new_name); |
ae5a3597 AM |
7346 | if (ret->pattern == NULL) |
7347 | { | |
d3ce72d0 | 7348 | ret->pattern = new_name; |
ae5a3597 AM |
7349 | ret->literal = FALSE; |
7350 | } | |
252b5132 RH |
7351 | |
7352 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
108ba305 | 7353 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 | 7354 | else if (strcasecmp (lang, "C++") == 0) |
108ba305 | 7355 | ret->mask = BFD_ELF_VERSION_CXX_TYPE; |
252b5132 | 7356 | else if (strcasecmp (lang, "Java") == 0) |
108ba305 | 7357 | ret->mask = BFD_ELF_VERSION_JAVA_TYPE; |
252b5132 RH |
7358 | else |
7359 | { | |
7360 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
7361 | lang); | |
108ba305 | 7362 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 RH |
7363 | } |
7364 | ||
fac1652d | 7365 | return ldemul_new_vers_pattern (ret); |
252b5132 RH |
7366 | } |
7367 | ||
7368 | /* This is called for each set of variable names and match | |
7369 | expressions. */ | |
7370 | ||
7371 | struct bfd_elf_version_tree * | |
1579bae1 AM |
7372 | lang_new_vers_node (struct bfd_elf_version_expr *globals, |
7373 | struct bfd_elf_version_expr *locals) | |
252b5132 RH |
7374 | { |
7375 | struct bfd_elf_version_tree *ret; | |
7376 | ||
1e9cc1c2 | 7377 | ret = (struct bfd_elf_version_tree *) xcalloc (1, sizeof *ret); |
108ba305 JJ |
7378 | ret->globals.list = globals; |
7379 | ret->locals.list = locals; | |
7380 | ret->match = lang_vers_match; | |
252b5132 | 7381 | ret->name_indx = (unsigned int) -1; |
252b5132 RH |
7382 | return ret; |
7383 | } | |
7384 | ||
7385 | /* This static variable keeps track of version indices. */ | |
7386 | ||
7387 | static int version_index; | |
7388 | ||
108ba305 JJ |
7389 | static hashval_t |
7390 | version_expr_head_hash (const void *p) | |
7391 | { | |
1e9cc1c2 NC |
7392 | const struct bfd_elf_version_expr *e = |
7393 | (const struct bfd_elf_version_expr *) p; | |
108ba305 | 7394 | |
ae5a3597 | 7395 | return htab_hash_string (e->pattern); |
108ba305 JJ |
7396 | } |
7397 | ||
7398 | static int | |
7399 | version_expr_head_eq (const void *p1, const void *p2) | |
7400 | { | |
1e9cc1c2 NC |
7401 | const struct bfd_elf_version_expr *e1 = |
7402 | (const struct bfd_elf_version_expr *) p1; | |
7403 | const struct bfd_elf_version_expr *e2 = | |
7404 | (const struct bfd_elf_version_expr *) p2; | |
108ba305 | 7405 | |
ae5a3597 | 7406 | return strcmp (e1->pattern, e2->pattern) == 0; |
108ba305 JJ |
7407 | } |
7408 | ||
7409 | static void | |
7410 | lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head) | |
7411 | { | |
7412 | size_t count = 0; | |
7413 | struct bfd_elf_version_expr *e, *next; | |
7414 | struct bfd_elf_version_expr **list_loc, **remaining_loc; | |
7415 | ||
7416 | for (e = head->list; e; e = e->next) | |
7417 | { | |
ae5a3597 | 7418 | if (e->literal) |
108ba305 JJ |
7419 | count++; |
7420 | head->mask |= e->mask; | |
7421 | } | |
7422 | ||
7423 | if (count) | |
7424 | { | |
7425 | head->htab = htab_create (count * 2, version_expr_head_hash, | |
7426 | version_expr_head_eq, NULL); | |
7427 | list_loc = &head->list; | |
7428 | remaining_loc = &head->remaining; | |
7429 | for (e = head->list; e; e = next) | |
7430 | { | |
7431 | next = e->next; | |
ae5a3597 | 7432 | if (!e->literal) |
108ba305 JJ |
7433 | { |
7434 | *remaining_loc = e; | |
7435 | remaining_loc = &e->next; | |
7436 | } | |
7437 | else | |
7438 | { | |
1e9cc1c2 | 7439 | void **loc = htab_find_slot ((htab_t) head->htab, e, INSERT); |
108ba305 JJ |
7440 | |
7441 | if (*loc) | |
7442 | { | |
7443 | struct bfd_elf_version_expr *e1, *last; | |
7444 | ||
1e9cc1c2 | 7445 | e1 = (struct bfd_elf_version_expr *) *loc; |
108ba305 JJ |
7446 | last = NULL; |
7447 | do | |
7448 | { | |
7449 | if (e1->mask == e->mask) | |
7450 | { | |
7451 | last = NULL; | |
7452 | break; | |
7453 | } | |
7454 | last = e1; | |
7455 | e1 = e1->next; | |
7456 | } | |
ae5a3597 | 7457 | while (e1 && strcmp (e1->pattern, e->pattern) == 0); |
108ba305 JJ |
7458 | |
7459 | if (last == NULL) | |
7460 | { | |
7461 | /* This is a duplicate. */ | |
7462 | /* FIXME: Memory leak. Sometimes pattern is not | |
7463 | xmalloced alone, but in larger chunk of memory. */ | |
ae5a3597 | 7464 | /* free (e->pattern); */ |
108ba305 JJ |
7465 | free (e); |
7466 | } | |
7467 | else | |
7468 | { | |
7469 | e->next = last->next; | |
7470 | last->next = e; | |
7471 | } | |
7472 | } | |
7473 | else | |
7474 | { | |
7475 | *loc = e; | |
7476 | *list_loc = e; | |
7477 | list_loc = &e->next; | |
7478 | } | |
7479 | } | |
7480 | } | |
7481 | *remaining_loc = NULL; | |
7482 | *list_loc = head->remaining; | |
7483 | } | |
7484 | else | |
7485 | head->remaining = head->list; | |
7486 | } | |
7487 | ||
252b5132 RH |
7488 | /* This is called when we know the name and dependencies of the |
7489 | version. */ | |
7490 | ||
7491 | void | |
1579bae1 AM |
7492 | lang_register_vers_node (const char *name, |
7493 | struct bfd_elf_version_tree *version, | |
7494 | struct bfd_elf_version_deps *deps) | |
252b5132 RH |
7495 | { |
7496 | struct bfd_elf_version_tree *t, **pp; | |
7497 | struct bfd_elf_version_expr *e1; | |
7498 | ||
6b9b879a JJ |
7499 | if (name == NULL) |
7500 | name = ""; | |
7501 | ||
7502 | if ((name[0] == '\0' && lang_elf_version_info != NULL) | |
7503 | || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0')) | |
7504 | { | |
6feb9908 AM |
7505 | einfo (_("%X%P: anonymous version tag cannot be combined" |
7506 | " with other version tags\n")); | |
5ed6aba4 | 7507 | free (version); |
6b9b879a JJ |
7508 | return; |
7509 | } | |
7510 | ||
252b5132 RH |
7511 | /* Make sure this node has a unique name. */ |
7512 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
7513 | if (strcmp (t->name, name) == 0) | |
7514 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
7515 | ||
108ba305 JJ |
7516 | lang_finalize_version_expr_head (&version->globals); |
7517 | lang_finalize_version_expr_head (&version->locals); | |
7518 | ||
252b5132 RH |
7519 | /* Check the global and local match names, and make sure there |
7520 | aren't any duplicates. */ | |
7521 | ||
108ba305 | 7522 | for (e1 = version->globals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
7523 | { |
7524 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
7525 | { | |
7526 | struct bfd_elf_version_expr *e2; | |
7527 | ||
ae5a3597 | 7528 | if (t->locals.htab && e1->literal) |
108ba305 | 7529 | { |
1e9cc1c2 NC |
7530 | e2 = (struct bfd_elf_version_expr *) |
7531 | htab_find ((htab_t) t->locals.htab, e1); | |
ae5a3597 | 7532 | while (e2 && strcmp (e1->pattern, e2->pattern) == 0) |
108ba305 JJ |
7533 | { |
7534 | if (e1->mask == e2->mask) | |
6feb9908 | 7535 | einfo (_("%X%P: duplicate expression `%s'" |
ae5a3597 | 7536 | " in version information\n"), e1->pattern); |
108ba305 JJ |
7537 | e2 = e2->next; |
7538 | } | |
7539 | } | |
ae5a3597 | 7540 | else if (!e1->literal) |
108ba305 | 7541 | for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
7542 | if (strcmp (e1->pattern, e2->pattern) == 0 |
7543 | && e1->mask == e2->mask) | |
7544 | einfo (_("%X%P: duplicate expression `%s'" | |
7545 | " in version information\n"), e1->pattern); | |
252b5132 RH |
7546 | } |
7547 | } | |
7548 | ||
108ba305 | 7549 | for (e1 = version->locals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
7550 | { |
7551 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
7552 | { | |
7553 | struct bfd_elf_version_expr *e2; | |
7554 | ||
ae5a3597 | 7555 | if (t->globals.htab && e1->literal) |
108ba305 | 7556 | { |
1e9cc1c2 NC |
7557 | e2 = (struct bfd_elf_version_expr *) |
7558 | htab_find ((htab_t) t->globals.htab, e1); | |
ae5a3597 | 7559 | while (e2 && strcmp (e1->pattern, e2->pattern) == 0) |
108ba305 JJ |
7560 | { |
7561 | if (e1->mask == e2->mask) | |
6feb9908 AM |
7562 | einfo (_("%X%P: duplicate expression `%s'" |
7563 | " in version information\n"), | |
ae5a3597 | 7564 | e1->pattern); |
108ba305 JJ |
7565 | e2 = e2->next; |
7566 | } | |
7567 | } | |
ae5a3597 | 7568 | else if (!e1->literal) |
108ba305 | 7569 | for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
7570 | if (strcmp (e1->pattern, e2->pattern) == 0 |
7571 | && e1->mask == e2->mask) | |
7572 | einfo (_("%X%P: duplicate expression `%s'" | |
7573 | " in version information\n"), e1->pattern); | |
252b5132 RH |
7574 | } |
7575 | } | |
7576 | ||
7577 | version->deps = deps; | |
7578 | version->name = name; | |
6b9b879a JJ |
7579 | if (name[0] != '\0') |
7580 | { | |
7581 | ++version_index; | |
7582 | version->vernum = version_index; | |
7583 | } | |
7584 | else | |
7585 | version->vernum = 0; | |
252b5132 RH |
7586 | |
7587 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) | |
7588 | ; | |
7589 | *pp = version; | |
7590 | } | |
7591 | ||
7592 | /* This is called when we see a version dependency. */ | |
7593 | ||
7594 | struct bfd_elf_version_deps * | |
1579bae1 | 7595 | lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name) |
252b5132 RH |
7596 | { |
7597 | struct bfd_elf_version_deps *ret; | |
7598 | struct bfd_elf_version_tree *t; | |
7599 | ||
1e9cc1c2 | 7600 | ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); |
252b5132 RH |
7601 | ret->next = list; |
7602 | ||
7603 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
7604 | { | |
7605 | if (strcmp (t->name, name) == 0) | |
7606 | { | |
7607 | ret->version_needed = t; | |
7608 | return ret; | |
7609 | } | |
7610 | } | |
7611 | ||
7612 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
7613 | ||
7614 | return ret; | |
7615 | } | |
7616 | ||
7617 | static void | |
1579bae1 | 7618 | lang_do_version_exports_section (void) |
252b5132 RH |
7619 | { |
7620 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
7621 | ||
7622 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
7623 | { | |
7624 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
7625 | char *contents, *p; | |
7626 | bfd_size_type len; | |
7627 | ||
7628 | if (sec == NULL) | |
b7a26f91 | 7629 | continue; |
252b5132 | 7630 | |
eea6121a | 7631 | len = sec->size; |
1e9cc1c2 | 7632 | contents = (char *) xmalloc (len); |
252b5132 | 7633 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) |
6f9efd97 | 7634 | einfo (_("%X%P: unable to read .exports section contents\n"), sec); |
252b5132 RH |
7635 | |
7636 | p = contents; | |
89cdebba | 7637 | while (p < contents + len) |
252b5132 | 7638 | { |
86043bbb | 7639 | greg = lang_new_vers_pattern (greg, p, NULL, FALSE); |
252b5132 RH |
7640 | p = strchr (p, '\0') + 1; |
7641 | } | |
7642 | ||
7643 | /* Do not free the contents, as we used them creating the regex. */ | |
7644 | ||
7645 | /* Do not include this section in the link. */ | |
a14a5de3 | 7646 | sec->flags |= SEC_EXCLUDE | SEC_KEEP; |
252b5132 RH |
7647 | } |
7648 | ||
86043bbb | 7649 | lreg = lang_new_vers_pattern (NULL, "*", NULL, FALSE); |
252b5132 RH |
7650 | lang_register_vers_node (command_line.version_exports_section, |
7651 | lang_new_vers_node (greg, lreg), NULL); | |
7652 | } | |
577a0623 AM |
7653 | |
7654 | void | |
1579bae1 | 7655 | lang_add_unique (const char *name) |
577a0623 AM |
7656 | { |
7657 | struct unique_sections *ent; | |
7658 | ||
7659 | for (ent = unique_section_list; ent; ent = ent->next) | |
7660 | if (strcmp (ent->name, name) == 0) | |
7661 | return; | |
7662 | ||
1e9cc1c2 | 7663 | ent = (struct unique_sections *) xmalloc (sizeof *ent); |
577a0623 AM |
7664 | ent->name = xstrdup (name); |
7665 | ent->next = unique_section_list; | |
7666 | unique_section_list = ent; | |
7667 | } | |
55255dae L |
7668 | |
7669 | /* Append the list of dynamic symbols to the existing one. */ | |
7670 | ||
7671 | void | |
7672 | lang_append_dynamic_list (struct bfd_elf_version_expr *dynamic) | |
7673 | { | |
40b36307 | 7674 | if (link_info.dynamic_list) |
55255dae | 7675 | { |
07806542 JJ |
7676 | struct bfd_elf_version_expr *tail; |
7677 | for (tail = dynamic; tail->next != NULL; tail = tail->next) | |
7678 | ; | |
40b36307 L |
7679 | tail->next = link_info.dynamic_list->head.list; |
7680 | link_info.dynamic_list->head.list = dynamic; | |
55255dae L |
7681 | } |
7682 | else | |
7683 | { | |
7684 | struct bfd_elf_dynamic_list *d; | |
7685 | ||
1e9cc1c2 | 7686 | d = (struct bfd_elf_dynamic_list *) xcalloc (1, sizeof *d); |
55255dae L |
7687 | d->head.list = dynamic; |
7688 | d->match = lang_vers_match; | |
40b36307 | 7689 | link_info.dynamic_list = d; |
55255dae L |
7690 | } |
7691 | } | |
7692 | ||
7693 | /* Append the list of C++ typeinfo dynamic symbols to the existing | |
7694 | one. */ | |
7695 | ||
7696 | void | |
7697 | lang_append_dynamic_list_cpp_typeinfo (void) | |
7698 | { | |
7699 | const char * symbols [] = | |
7700 | { | |
7701 | "typeinfo name for*", | |
7702 | "typeinfo for*" | |
7703 | }; | |
7704 | struct bfd_elf_version_expr *dynamic = NULL; | |
7705 | unsigned int i; | |
7706 | ||
7707 | for (i = 0; i < ARRAY_SIZE (symbols); i++) | |
7708 | dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++", | |
7709 | FALSE); | |
7710 | ||
7711 | lang_append_dynamic_list (dynamic); | |
7712 | } | |
40b36307 L |
7713 | |
7714 | /* Append the list of C++ operator new and delete dynamic symbols to the | |
7715 | existing one. */ | |
7716 | ||
7717 | void | |
7718 | lang_append_dynamic_list_cpp_new (void) | |
7719 | { | |
7720 | const char * symbols [] = | |
7721 | { | |
7722 | "operator new*", | |
7723 | "operator delete*" | |
7724 | }; | |
7725 | struct bfd_elf_version_expr *dynamic = NULL; | |
7726 | unsigned int i; | |
7727 | ||
7728 | for (i = 0; i < ARRAY_SIZE (symbols); i++) | |
7729 | dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++", | |
7730 | FALSE); | |
7731 | ||
7732 | lang_append_dynamic_list (dynamic); | |
7733 | } |