Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
a2b64bed | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
e5caa5e0 | 3 | 2001, 2002, 2003, 2004 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
53b2a62f | 6 | This file is part of GLD, the Gnu Linker. |
252b5132 | 7 | |
53b2a62f NC |
8 | GLD is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
53b2a62f NC |
13 | GLD is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
53b2a62f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GLD; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libiberty.h" | |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "obstack.h" |
28 | #include "bfdlink.h" | |
29 | ||
30 | #include "ld.h" | |
31 | #include "ldmain.h" | |
252b5132 RH |
32 | #include "ldexp.h" |
33 | #include "ldlang.h" | |
df2a7313 | 34 | #include <ldgram.h> |
252b5132 RH |
35 | #include "ldlex.h" |
36 | #include "ldmisc.h" | |
37 | #include "ldctor.h" | |
38 | #include "ldfile.h" | |
b71e2778 | 39 | #include "ldemul.h" |
252b5132 RH |
40 | #include "fnmatch.h" |
41 | #include "demangle.h" | |
108ba305 | 42 | #include "hashtab.h" |
252b5132 | 43 | |
7abb6dea | 44 | #ifndef offsetof |
cf888e70 | 45 | #define offsetof(TYPE, MEMBER) ((size_t) & (((TYPE*) 0)->MEMBER)) |
7abb6dea AM |
46 | #endif |
47 | ||
cf888e70 | 48 | /* Locals variables. */ |
252b5132 | 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; |
252b5132 | 55 | static lang_statement_list_type input_file_chain; |
b34976b6 | 56 | static bfd_boolean placed_commons = FALSE; |
252b5132 | 57 | static lang_output_section_statement_type *default_common_section; |
b34976b6 | 58 | static bfd_boolean map_option_f; |
252b5132 RH |
59 | static bfd_vma print_dot; |
60 | static lang_input_statement_type *first_file; | |
5f992e62 AM |
61 | static const char *current_target; |
62 | static const char *output_target; | |
252b5132 RH |
63 | static lang_statement_list_type statement_list; |
64 | static struct lang_phdr *lang_phdr_list; | |
420e579c | 65 | static struct bfd_hash_table lang_definedness_table; |
252b5132 | 66 | |
cf888e70 | 67 | /* Forward declarations. */ |
1579bae1 | 68 | static void exp_init_os (etree_type *); |
35835446 | 69 | static void init_map_userdata (bfd *, asection *, void *); |
1579bae1 AM |
70 | static bfd_boolean wildcardp (const char *); |
71 | static lang_input_statement_type *lookup_name (const char *); | |
72 | static bfd_boolean load_symbols (lang_input_statement_type *, | |
73 | lang_statement_list_type *); | |
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 JR |
77 | static void print_all_symbols (asection *); |
78 | static bfd_boolean sort_def_symbol (struct bfd_link_hash_entry *, void *); | |
1579bae1 AM |
79 | static void print_statement (lang_statement_union_type *, |
80 | lang_output_section_statement_type *); | |
81 | static void print_statement_list (lang_statement_union_type *, | |
82 | lang_output_section_statement_type *); | |
83 | static void print_statements (void); | |
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); | |
87 | ||
88 | typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *, | |
89 | asection *, lang_input_statement_type *, void *); | |
5f992e62 | 90 | |
cf888e70 | 91 | /* Exported variables. */ |
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 }; |
e3e942e9 | 96 | struct bfd_sym_chain entry_symbol = { NULL, NULL }; |
1e281515 | 97 | const char *entry_section = ".text"; |
b34976b6 AM |
98 | bfd_boolean entry_from_cmdline; |
99 | bfd_boolean lang_has_input_file = FALSE; | |
100 | bfd_boolean had_output_filename = FALSE; | |
101 | bfd_boolean lang_float_flag = FALSE; | |
102 | bfd_boolean delete_output_file_on_failure = FALSE; | |
252b5132 | 103 | struct lang_nocrossrefs *nocrossref_list; |
577a0623 | 104 | struct unique_sections *unique_section_list; |
e3f2db7f | 105 | static bfd_boolean ldlang_sysrooted_script = FALSE; |
420e579c | 106 | int lang_statement_iteration = 0; |
252b5132 RH |
107 | |
108 | etree_type *base; /* Relocation base - or null */ | |
109 | ||
d1778b88 | 110 | #define new_stat(x, y) \ |
1579bae1 | 111 | (x##_type *) new_statement (x##_enum, sizeof (x##_type), y) |
252b5132 | 112 | |
d1778b88 AM |
113 | #define outside_section_address(q) \ |
114 | ((q)->output_offset + (q)->output_section->vma) | |
252b5132 | 115 | |
d1778b88 AM |
116 | #define outside_symbol_address(q) \ |
117 | ((q)->value + outside_section_address (q->section)) | |
252b5132 RH |
118 | |
119 | #define SECTION_NAME_MAP_LENGTH (16) | |
120 | ||
1579bae1 AM |
121 | void * |
122 | stat_alloc (size_t size) | |
252b5132 RH |
123 | { |
124 | return obstack_alloc (&stat_obstack, size); | |
125 | } | |
126 | ||
b34976b6 | 127 | bfd_boolean |
d0d6a25b | 128 | unique_section_p (const asection *sec) |
577a0623 AM |
129 | { |
130 | struct unique_sections *unam; | |
d0d6a25b | 131 | const char *secnam; |
577a0623 | 132 | |
d0d6a25b AM |
133 | if (link_info.relocatable |
134 | && sec->owner != NULL | |
135 | && bfd_is_group_section (sec->owner, sec)) | |
136 | return TRUE; | |
137 | ||
138 | secnam = sec->name; | |
577a0623 AM |
139 | for (unam = unique_section_list; unam; unam = unam->next) |
140 | if (wildcardp (unam->name) | |
141 | ? fnmatch (unam->name, secnam, 0) == 0 | |
142 | : strcmp (unam->name, secnam) == 0) | |
143 | { | |
b34976b6 | 144 | return TRUE; |
577a0623 AM |
145 | } |
146 | ||
b34976b6 | 147 | return FALSE; |
577a0623 AM |
148 | } |
149 | ||
08da4cac | 150 | /* Generic traversal routines for finding matching sections. */ |
4dec4d4e RH |
151 | |
152 | static void | |
1579bae1 AM |
153 | walk_wild_section (lang_wild_statement_type *ptr, |
154 | lang_input_statement_type *file, | |
155 | callback_t callback, | |
156 | void *data) | |
4dec4d4e | 157 | { |
b6bf44ba AM |
158 | asection *s; |
159 | ||
160 | if (file->just_syms_flag) | |
161 | return; | |
162 | ||
163 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
4dec4d4e | 164 | { |
b6bf44ba AM |
165 | struct wildcard_list *sec; |
166 | ||
167 | sec = ptr->section_list; | |
2181f54f AM |
168 | if (sec == NULL) |
169 | (*callback) (ptr, sec, s, file, data); | |
170 | ||
171 | while (sec != NULL) | |
08da4cac | 172 | { |
b34976b6 | 173 | bfd_boolean skip = FALSE; |
2181f54f AM |
174 | struct name_list *list_tmp; |
175 | ||
176 | /* Don't process sections from files which were | |
177 | excluded. */ | |
178 | for (list_tmp = sec->spec.exclude_name_list; | |
179 | list_tmp; | |
180 | list_tmp = list_tmp->next) | |
181 | { | |
182 | if (wildcardp (list_tmp->name)) | |
183 | skip = fnmatch (list_tmp->name, file->filename, 0) == 0; | |
184 | else | |
185 | skip = strcmp (list_tmp->name, file->filename) == 0; | |
4dec4d4e | 186 | |
34efb449 AO |
187 | /* If this file is part of an archive, and the archive is |
188 | excluded, exclude this file. */ | |
189 | if (! skip && file->the_bfd != NULL | |
190 | && file->the_bfd->my_archive != NULL | |
191 | && file->the_bfd->my_archive->filename != NULL) | |
192 | { | |
193 | if (wildcardp (list_tmp->name)) | |
194 | skip = fnmatch (list_tmp->name, | |
195 | file->the_bfd->my_archive->filename, | |
196 | 0) == 0; | |
197 | else | |
198 | skip = strcmp (list_tmp->name, | |
199 | file->the_bfd->my_archive->filename) == 0; | |
200 | } | |
201 | ||
2181f54f AM |
202 | if (skip) |
203 | break; | |
204 | } | |
205 | ||
206 | if (!skip && sec->spec.name != NULL) | |
b6bf44ba | 207 | { |
2181f54f AM |
208 | const char *sname = bfd_get_section_name (file->the_bfd, s); |
209 | ||
210 | if (wildcardp (sec->spec.name)) | |
211 | skip = fnmatch (sec->spec.name, sname, 0) != 0; | |
212 | else | |
213 | skip = strcmp (sec->spec.name, sname) != 0; | |
b6bf44ba | 214 | } |
4dec4d4e | 215 | |
b6bf44ba AM |
216 | if (!skip) |
217 | (*callback) (ptr, sec, s, file, data); | |
4dec4d4e | 218 | |
2181f54f | 219 | sec = sec->next; |
4dec4d4e RH |
220 | } |
221 | } | |
222 | } | |
223 | ||
224 | /* Handle a wild statement for a single file F. */ | |
225 | ||
226 | static void | |
1579bae1 AM |
227 | walk_wild_file (lang_wild_statement_type *s, |
228 | lang_input_statement_type *f, | |
229 | callback_t callback, | |
230 | void *data) | |
4dec4d4e RH |
231 | { |
232 | if (f->the_bfd == NULL | |
233 | || ! bfd_check_format (f->the_bfd, bfd_archive)) | |
b6bf44ba | 234 | walk_wild_section (s, f, callback, data); |
4dec4d4e RH |
235 | else |
236 | { | |
237 | bfd *member; | |
238 | ||
239 | /* This is an archive file. We must map each member of the | |
240 | archive separately. */ | |
1579bae1 | 241 | member = bfd_openr_next_archived_file (f->the_bfd, NULL); |
4dec4d4e RH |
242 | while (member != NULL) |
243 | { | |
244 | /* When lookup_name is called, it will call the add_symbols | |
245 | entry point for the archive. For each element of the | |
246 | archive which is included, BFD will call ldlang_add_file, | |
247 | which will set the usrdata field of the member to the | |
248 | lang_input_statement. */ | |
249 | if (member->usrdata != NULL) | |
250 | { | |
1579bae1 | 251 | walk_wild_section (s, member->usrdata, callback, data); |
4dec4d4e RH |
252 | } |
253 | ||
254 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
255 | } | |
256 | } | |
257 | } | |
258 | ||
259 | static void | |
1579bae1 | 260 | walk_wild (lang_wild_statement_type *s, callback_t callback, void *data) |
4dec4d4e | 261 | { |
b6bf44ba AM |
262 | const char *file_spec = s->filename; |
263 | ||
264 | if (file_spec == NULL) | |
4dec4d4e RH |
265 | { |
266 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 267 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 268 | { |
b6bf44ba | 269 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
270 | } |
271 | } | |
b6bf44ba | 272 | else if (wildcardp (file_spec)) |
4dec4d4e | 273 | { |
e50d8076 | 274 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 275 | { |
b6bf44ba AM |
276 | if (fnmatch (file_spec, f->filename, FNM_FILE_NAME) == 0) |
277 | walk_wild_file (s, f, callback, data); | |
4dec4d4e RH |
278 | } |
279 | } | |
280 | else | |
281 | { | |
e50d8076 NC |
282 | lang_input_statement_type *f; |
283 | ||
4dec4d4e | 284 | /* Perform the iteration over a single file. */ |
b6bf44ba | 285 | f = lookup_name (file_spec); |
6770ec8c | 286 | if (f) |
b6bf44ba | 287 | walk_wild_file (s, f, callback, data); |
4dec4d4e | 288 | } |
5f992e62 AM |
289 | } |
290 | ||
08da4cac KH |
291 | /* lang_for_each_statement walks the parse tree and calls the provided |
292 | function for each node. */ | |
252b5132 RH |
293 | |
294 | static void | |
1579bae1 AM |
295 | lang_for_each_statement_worker (void (*func) (lang_statement_union_type *), |
296 | lang_statement_union_type *s) | |
252b5132 | 297 | { |
1579bae1 | 298 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
299 | { |
300 | func (s); | |
301 | ||
302 | switch (s->header.type) | |
303 | { | |
304 | case lang_constructors_statement_enum: | |
305 | lang_for_each_statement_worker (func, constructor_list.head); | |
306 | break; | |
307 | case lang_output_section_statement_enum: | |
308 | lang_for_each_statement_worker | |
6feb9908 | 309 | (func, s->output_section_statement.children.head); |
252b5132 RH |
310 | break; |
311 | case lang_wild_statement_enum: | |
6feb9908 AM |
312 | lang_for_each_statement_worker (func, |
313 | s->wild_statement.children.head); | |
252b5132 RH |
314 | break; |
315 | case lang_group_statement_enum: | |
316 | lang_for_each_statement_worker (func, | |
317 | s->group_statement.children.head); | |
318 | break; | |
319 | case lang_data_statement_enum: | |
320 | case lang_reloc_statement_enum: | |
321 | case lang_object_symbols_statement_enum: | |
322 | case lang_output_statement_enum: | |
323 | case lang_target_statement_enum: | |
324 | case lang_input_section_enum: | |
325 | case lang_input_statement_enum: | |
326 | case lang_assignment_statement_enum: | |
327 | case lang_padding_statement_enum: | |
328 | case lang_address_statement_enum: | |
329 | case lang_fill_statement_enum: | |
330 | break; | |
331 | default: | |
332 | FAIL (); | |
333 | break; | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | void | |
1579bae1 | 339 | lang_for_each_statement (void (*func) (lang_statement_union_type *)) |
252b5132 | 340 | { |
08da4cac | 341 | lang_for_each_statement_worker (func, statement_list.head); |
252b5132 RH |
342 | } |
343 | ||
344 | /*----------------------------------------------------------------------*/ | |
08da4cac | 345 | |
252b5132 | 346 | void |
1579bae1 | 347 | lang_list_init (lang_statement_list_type *list) |
252b5132 | 348 | { |
1579bae1 | 349 | list->head = NULL; |
252b5132 RH |
350 | list->tail = &list->head; |
351 | } | |
352 | ||
08da4cac | 353 | /* Build a new statement node for the parse tree. */ |
252b5132 | 354 | |
08da4cac | 355 | static lang_statement_union_type * |
1579bae1 AM |
356 | new_statement (enum statement_enum type, |
357 | size_t size, | |
358 | lang_statement_list_type *list) | |
252b5132 | 359 | { |
1579bae1 | 360 | lang_statement_union_type *new; |
252b5132 | 361 | |
1579bae1 | 362 | new = stat_alloc (size); |
252b5132 | 363 | new->header.type = type; |
1579bae1 | 364 | new->header.next = NULL; |
252b5132 RH |
365 | lang_statement_append (list, new, &new->header.next); |
366 | return new; | |
367 | } | |
368 | ||
08da4cac KH |
369 | /* Build a new input file node for the language. There are several |
370 | ways in which we treat an input file, eg, we only look at symbols, | |
371 | or prefix it with a -l etc. | |
252b5132 | 372 | |
08da4cac | 373 | We can be supplied with requests for input files more than once; |
396a2467 | 374 | they may, for example be split over several lines like foo.o(.text) |
d1778b88 | 375 | foo.o(.data) etc, so when asked for a file we check that we haven't |
08da4cac | 376 | got it already so we don't duplicate the bfd. */ |
252b5132 | 377 | |
252b5132 | 378 | static lang_input_statement_type * |
1579bae1 AM |
379 | new_afile (const char *name, |
380 | lang_input_file_enum_type file_type, | |
381 | const char *target, | |
382 | bfd_boolean add_to_list) | |
252b5132 RH |
383 | { |
384 | lang_input_statement_type *p; | |
385 | ||
386 | if (add_to_list) | |
387 | p = new_stat (lang_input_statement, stat_ptr); | |
388 | else | |
389 | { | |
1579bae1 | 390 | p = stat_alloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
391 | p->header.next = NULL; |
392 | } | |
393 | ||
b34976b6 | 394 | lang_has_input_file = TRUE; |
252b5132 | 395 | p->target = target; |
e3f2db7f | 396 | p->sysrooted = FALSE; |
252b5132 RH |
397 | switch (file_type) |
398 | { | |
399 | case lang_input_file_is_symbols_only_enum: | |
400 | p->filename = name; | |
b34976b6 AM |
401 | p->is_archive = FALSE; |
402 | p->real = TRUE; | |
252b5132 | 403 | p->local_sym_name = name; |
b34976b6 AM |
404 | p->just_syms_flag = TRUE; |
405 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
406 | break; |
407 | case lang_input_file_is_fake_enum: | |
408 | p->filename = name; | |
b34976b6 AM |
409 | p->is_archive = FALSE; |
410 | p->real = FALSE; | |
252b5132 | 411 | p->local_sym_name = name; |
b34976b6 AM |
412 | p->just_syms_flag = FALSE; |
413 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
414 | break; |
415 | case lang_input_file_is_l_enum: | |
b34976b6 | 416 | p->is_archive = TRUE; |
252b5132 | 417 | p->filename = name; |
b34976b6 | 418 | p->real = TRUE; |
1579bae1 | 419 | p->local_sym_name = concat ("-l", name, NULL); |
b34976b6 AM |
420 | p->just_syms_flag = FALSE; |
421 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
422 | break; |
423 | case lang_input_file_is_marker_enum: | |
424 | p->filename = name; | |
b34976b6 AM |
425 | p->is_archive = FALSE; |
426 | p->real = FALSE; | |
252b5132 | 427 | p->local_sym_name = name; |
b34976b6 AM |
428 | p->just_syms_flag = FALSE; |
429 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
430 | break; |
431 | case lang_input_file_is_search_file_enum: | |
e3f2db7f | 432 | p->sysrooted = ldlang_sysrooted_script; |
252b5132 | 433 | p->filename = name; |
b34976b6 AM |
434 | p->is_archive = FALSE; |
435 | p->real = TRUE; | |
252b5132 | 436 | p->local_sym_name = name; |
b34976b6 AM |
437 | p->just_syms_flag = FALSE; |
438 | p->search_dirs_flag = TRUE; | |
252b5132 RH |
439 | break; |
440 | case lang_input_file_is_file_enum: | |
441 | p->filename = name; | |
b34976b6 AM |
442 | p->is_archive = FALSE; |
443 | p->real = TRUE; | |
252b5132 | 444 | p->local_sym_name = name; |
b34976b6 AM |
445 | p->just_syms_flag = FALSE; |
446 | p->search_dirs_flag = FALSE; | |
252b5132 RH |
447 | break; |
448 | default: | |
449 | FAIL (); | |
450 | } | |
1579bae1 AM |
451 | p->the_bfd = NULL; |
452 | p->asymbols = NULL; | |
453 | p->next_real_file = NULL; | |
454 | p->next = NULL; | |
252b5132 RH |
455 | p->symbol_count = 0; |
456 | p->dynamic = config.dynamic_link; | |
4a43e768 | 457 | p->as_needed = as_needed; |
252b5132 | 458 | p->whole_archive = whole_archive; |
b34976b6 | 459 | p->loaded = FALSE; |
252b5132 RH |
460 | lang_statement_append (&input_file_chain, |
461 | (lang_statement_union_type *) p, | |
462 | &p->next_real_file); | |
463 | return p; | |
464 | } | |
465 | ||
466 | lang_input_statement_type * | |
1579bae1 AM |
467 | lang_add_input_file (const char *name, |
468 | lang_input_file_enum_type file_type, | |
469 | const char *target) | |
252b5132 | 470 | { |
b34976b6 AM |
471 | lang_has_input_file = TRUE; |
472 | return new_afile (name, file_type, target, TRUE); | |
252b5132 RH |
473 | } |
474 | ||
08da4cac KH |
475 | /* Build enough state so that the parser can build its tree. */ |
476 | ||
252b5132 | 477 | void |
1579bae1 | 478 | lang_init (void) |
252b5132 RH |
479 | { |
480 | obstack_begin (&stat_obstack, 1000); | |
481 | ||
482 | stat_ptr = &statement_list; | |
483 | ||
484 | lang_list_init (stat_ptr); | |
485 | ||
486 | lang_list_init (&input_file_chain); | |
487 | lang_list_init (&lang_output_section_statement); | |
488 | lang_list_init (&file_chain); | |
1579bae1 AM |
489 | first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum, |
490 | NULL); | |
08da4cac KH |
491 | abs_output_section = |
492 | lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); | |
252b5132 RH |
493 | |
494 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
420e579c HPN |
495 | |
496 | /* The value "3" is ad-hoc, somewhat related to the expected number of | |
497 | DEFINED expressions in a linker script. For most default linker | |
498 | scripts, there are none. Why a hash table then? Well, it's somewhat | |
499 | simpler to re-use working machinery than using a linked list in terms | |
500 | of code-complexity here in ld, besides the initialization which just | |
501 | looks like other code here. */ | |
502 | if (bfd_hash_table_init_n (&lang_definedness_table, | |
503 | lang_definedness_newfunc, 3) != TRUE) | |
504 | einfo (_("%P%F: out of memory during initialization")); | |
505 | ||
506 | /* Callers of exp_fold_tree need to increment this. */ | |
507 | lang_statement_iteration = 0; | |
252b5132 RH |
508 | } |
509 | ||
510 | /*---------------------------------------------------------------------- | |
08da4cac KH |
511 | A region is an area of memory declared with the |
512 | MEMORY { name:org=exp, len=exp ... } | |
513 | syntax. | |
252b5132 | 514 | |
08da4cac | 515 | We maintain a list of all the regions here. |
252b5132 | 516 | |
08da4cac | 517 | If no regions are specified in the script, then the default is used |
a747ee4d NC |
518 | which is created when looked up to be the entire data space. |
519 | ||
520 | If create is true we are creating a region inside a MEMORY block. | |
521 | In this case it is probably an error to create a region that has | |
522 | already been created. If we are not inside a MEMORY block it is | |
523 | dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION) | |
524 | and so we issue a warning. */ | |
252b5132 RH |
525 | |
526 | static lang_memory_region_type *lang_memory_region_list; | |
6feb9908 AM |
527 | static lang_memory_region_type **lang_memory_region_list_tail |
528 | = &lang_memory_region_list; | |
252b5132 RH |
529 | |
530 | lang_memory_region_type * | |
a747ee4d | 531 | lang_memory_region_lookup (const char *const name, bfd_boolean create) |
252b5132 RH |
532 | { |
533 | lang_memory_region_type *p; | |
1579bae1 | 534 | lang_memory_region_type *new; |
252b5132 | 535 | |
9f88b410 RS |
536 | /* NAME is NULL for LMA memspecs if no region was specified. */ |
537 | if (name == NULL) | |
538 | return NULL; | |
539 | ||
1579bae1 | 540 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
a747ee4d NC |
541 | if (strcmp (p->name, name) == 0) |
542 | { | |
543 | if (create) | |
6feb9908 AM |
544 | einfo (_("%P:%S: warning: redeclaration of memory region '%s'\n"), |
545 | name); | |
1579bae1 | 546 | return p; |
a747ee4d | 547 | } |
252b5132 RH |
548 | |
549 | #if 0 | |
550 | /* This code used to always use the first region in the list as the | |
551 | default region. I changed it to instead use a region | |
552 | encompassing all of memory as the default region. This permits | |
553 | NOLOAD sections to work reasonably without requiring a region. | |
554 | People should specify what region they mean, if they really want | |
555 | a region. */ | |
a747ee4d | 556 | if (strcmp (name, DEFAULT_MEMORY_REGION) == 0) |
252b5132 | 557 | { |
1579bae1 AM |
558 | if (lang_memory_region_list != NULL) |
559 | return lang_memory_region_list; | |
252b5132 RH |
560 | } |
561 | #endif | |
562 | ||
a747ee4d NC |
563 | if (!create && strcmp (name, DEFAULT_MEMORY_REGION)) |
564 | einfo (_("%P:%S: warning: memory region %s not declared\n"), name); | |
565 | ||
1579bae1 | 566 | new = stat_alloc (sizeof (lang_memory_region_type)); |
252b5132 | 567 | |
1579bae1 AM |
568 | new->name = xstrdup (name); |
569 | new->next = NULL; | |
252b5132 | 570 | |
1579bae1 AM |
571 | *lang_memory_region_list_tail = new; |
572 | lang_memory_region_list_tail = &new->next; | |
573 | new->origin = 0; | |
574 | new->flags = 0; | |
575 | new->not_flags = 0; | |
576 | new->length = ~(bfd_size_type) 0; | |
577 | new->current = 0; | |
578 | new->had_full_message = FALSE; | |
252b5132 | 579 | |
1579bae1 | 580 | return new; |
252b5132 RH |
581 | } |
582 | ||
5f992e62 | 583 | static lang_memory_region_type * |
1579bae1 | 584 | lang_memory_default (asection *section) |
252b5132 RH |
585 | { |
586 | lang_memory_region_type *p; | |
587 | ||
588 | flagword sec_flags = section->flags; | |
589 | ||
590 | /* Override SEC_DATA to mean a writable section. */ | |
591 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
592 | sec_flags |= SEC_DATA; | |
593 | ||
1579bae1 | 594 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
595 | { |
596 | if ((p->flags & sec_flags) != 0 | |
597 | && (p->not_flags & sec_flags) == 0) | |
598 | { | |
599 | return p; | |
600 | } | |
601 | } | |
a747ee4d | 602 | return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE); |
252b5132 RH |
603 | } |
604 | ||
0841712e JJ |
605 | static lang_output_section_statement_type * |
606 | lang_output_section_find_1 (const char *const name, int constraint) | |
252b5132 RH |
607 | { |
608 | lang_statement_union_type *u; | |
609 | lang_output_section_statement_type *lookup; | |
610 | ||
1579bae1 | 611 | for (u = lang_output_section_statement.head; u != NULL; u = lookup->next) |
252b5132 RH |
612 | { |
613 | lookup = &u->output_section_statement; | |
0841712e JJ |
614 | if (strcmp (name, lookup->name) == 0 |
615 | && lookup->constraint != -1 | |
616 | && (constraint == 0 || constraint == lookup->constraint)) | |
1579bae1 | 617 | return lookup; |
252b5132 | 618 | } |
1579bae1 | 619 | return NULL; |
252b5132 RH |
620 | } |
621 | ||
622 | lang_output_section_statement_type * | |
0841712e JJ |
623 | lang_output_section_find (const char *const name) |
624 | { | |
625 | return lang_output_section_find_1 (name, 0); | |
626 | } | |
627 | ||
628 | static lang_output_section_statement_type * | |
629 | lang_output_section_statement_lookup_1 (const char *const name, int constraint) | |
252b5132 RH |
630 | { |
631 | lang_output_section_statement_type *lookup; | |
632 | ||
0841712e | 633 | lookup = lang_output_section_find_1 (name, constraint); |
1579bae1 | 634 | if (lookup == NULL) |
252b5132 | 635 | { |
1579bae1 AM |
636 | lookup = new_stat (lang_output_section_statement, stat_ptr); |
637 | lookup->region = NULL; | |
638 | lookup->lma_region = NULL; | |
639 | lookup->fill = 0; | |
252b5132 RH |
640 | lookup->block_value = 1; |
641 | lookup->name = name; | |
642 | ||
1579bae1 AM |
643 | lookup->next = NULL; |
644 | lookup->bfd_section = NULL; | |
1b493742 | 645 | lookup->processed = 0; |
0841712e | 646 | lookup->constraint = constraint; |
252b5132 | 647 | lookup->sectype = normal_section; |
1579bae1 | 648 | lookup->addr_tree = NULL; |
252b5132 RH |
649 | lang_list_init (&lookup->children); |
650 | ||
1579bae1 | 651 | lookup->memspec = NULL; |
252b5132 RH |
652 | lookup->flags = 0; |
653 | lookup->subsection_alignment = -1; | |
654 | lookup->section_alignment = -1; | |
1579bae1 | 655 | lookup->load_base = NULL; |
9f88b410 | 656 | lookup->update_dot_tree = NULL; |
252b5132 RH |
657 | lookup->phdrs = NULL; |
658 | ||
659 | lang_statement_append (&lang_output_section_statement, | |
660 | (lang_statement_union_type *) lookup, | |
661 | &lookup->next); | |
662 | } | |
663 | return lookup; | |
664 | } | |
665 | ||
0841712e JJ |
666 | lang_output_section_statement_type * |
667 | lang_output_section_statement_lookup (const char *const name) | |
668 | { | |
669 | return lang_output_section_statement_lookup_1 (name, 0); | |
670 | } | |
671 | ||
252b5132 | 672 | static void |
1579bae1 | 673 | lang_map_flags (flagword flag) |
252b5132 RH |
674 | { |
675 | if (flag & SEC_ALLOC) | |
676 | minfo ("a"); | |
677 | ||
678 | if (flag & SEC_CODE) | |
679 | minfo ("x"); | |
680 | ||
681 | if (flag & SEC_READONLY) | |
682 | minfo ("r"); | |
683 | ||
684 | if (flag & SEC_DATA) | |
685 | minfo ("w"); | |
686 | ||
687 | if (flag & SEC_LOAD) | |
688 | minfo ("l"); | |
689 | } | |
690 | ||
691 | void | |
1579bae1 | 692 | lang_map (void) |
252b5132 RH |
693 | { |
694 | lang_memory_region_type *m; | |
35835446 | 695 | bfd *p; |
252b5132 RH |
696 | |
697 | minfo (_("\nMemory Configuration\n\n")); | |
698 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
699 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
700 | ||
1579bae1 | 701 | for (m = lang_memory_region_list; m != NULL; m = m->next) |
252b5132 RH |
702 | { |
703 | char buf[100]; | |
704 | int len; | |
705 | ||
706 | fprintf (config.map_file, "%-16s ", m->name); | |
707 | ||
708 | sprintf_vma (buf, m->origin); | |
709 | minfo ("0x%s ", buf); | |
710 | len = strlen (buf); | |
711 | while (len < 16) | |
712 | { | |
713 | print_space (); | |
714 | ++len; | |
715 | } | |
716 | ||
717 | minfo ("0x%V", m->length); | |
718 | if (m->flags || m->not_flags) | |
719 | { | |
720 | #ifndef BFD64 | |
721 | minfo (" "); | |
722 | #endif | |
723 | if (m->flags) | |
724 | { | |
725 | print_space (); | |
726 | lang_map_flags (m->flags); | |
727 | } | |
728 | ||
729 | if (m->not_flags) | |
730 | { | |
731 | minfo (" !"); | |
732 | lang_map_flags (m->not_flags); | |
733 | } | |
734 | } | |
735 | ||
736 | print_nl (); | |
737 | } | |
738 | ||
739 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
740 | ||
35835446 JR |
741 | if (! command_line.reduce_memory_overheads) |
742 | { | |
743 | obstack_begin (&map_obstack, 1000); | |
744 | for (p = link_info.input_bfds; p != (bfd *) NULL; p = p->link_next) | |
745 | bfd_map_over_sections (p, init_map_userdata, 0); | |
746 | bfd_link_hash_traverse (link_info.hash, sort_def_symbol, 0); | |
747 | } | |
252b5132 RH |
748 | print_statements (); |
749 | } | |
750 | ||
35835446 JR |
751 | static void |
752 | init_map_userdata (abfd, sec, data) | |
753 | bfd *abfd ATTRIBUTE_UNUSED; | |
754 | asection *sec; | |
755 | void *data ATTRIBUTE_UNUSED; | |
756 | { | |
757 | fat_section_userdata_type *new_data | |
758 | = ((fat_section_userdata_type *) (stat_alloc | |
759 | (sizeof (fat_section_userdata_type)))); | |
760 | ||
761 | ASSERT (get_userdata (sec) == NULL); | |
762 | get_userdata (sec) = new_data; | |
763 | new_data->map_symbol_def_tail = &new_data->map_symbol_def_head; | |
764 | } | |
765 | ||
766 | static bfd_boolean | |
767 | sort_def_symbol (hash_entry, info) | |
768 | struct bfd_link_hash_entry *hash_entry; | |
769 | void *info ATTRIBUTE_UNUSED; | |
770 | { | |
771 | if (hash_entry->type == bfd_link_hash_defined | |
772 | || hash_entry->type == bfd_link_hash_defweak) | |
773 | { | |
774 | struct fat_user_section_struct *ud; | |
775 | struct map_symbol_def *def; | |
776 | ||
777 | ud = get_userdata (hash_entry->u.def.section); | |
778 | if (! ud) | |
779 | { | |
780 | /* ??? What do we have to do to initialize this beforehand? */ | |
781 | /* The first time we get here is bfd_abs_section... */ | |
782 | init_map_userdata (0, hash_entry->u.def.section, 0); | |
783 | ud = get_userdata (hash_entry->u.def.section); | |
784 | } | |
785 | else if (!ud->map_symbol_def_tail) | |
786 | ud->map_symbol_def_tail = &ud->map_symbol_def_head; | |
6feb9908 | 787 | def = obstack_alloc (&map_obstack, sizeof *def); |
35835446 JR |
788 | def->entry = hash_entry; |
789 | *ud->map_symbol_def_tail = def; | |
790 | ud->map_symbol_def_tail = &def->next; | |
791 | } | |
792 | return TRUE; | |
793 | } | |
794 | ||
252b5132 RH |
795 | /* Initialize an output section. */ |
796 | ||
797 | static void | |
1579bae1 | 798 | init_os (lang_output_section_statement_type *s) |
252b5132 | 799 | { |
35835446 | 800 | lean_section_userdata_type *new; |
252b5132 RH |
801 | |
802 | if (s->bfd_section != NULL) | |
803 | return; | |
804 | ||
805 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) | |
6f9efd97 | 806 | einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME); |
252b5132 | 807 | |
35835446 | 808 | new = stat_alloc (SECTION_USERDATA_SIZE); |
252b5132 RH |
809 | |
810 | s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); | |
1579bae1 | 811 | if (s->bfd_section == NULL) |
252b5132 | 812 | s->bfd_section = bfd_make_section (output_bfd, s->name); |
1579bae1 | 813 | if (s->bfd_section == NULL) |
252b5132 RH |
814 | { |
815 | einfo (_("%P%F: output format %s cannot represent section called %s\n"), | |
816 | output_bfd->xvec->name, s->name); | |
817 | } | |
818 | s->bfd_section->output_section = s->bfd_section; | |
819 | ||
08da4cac KH |
820 | /* We initialize an output sections output offset to minus its own |
821 | vma to allow us to output a section through itself. */ | |
252b5132 | 822 | s->bfd_section->output_offset = 0; |
1579bae1 | 823 | get_userdata (s->bfd_section) = new; |
252b5132 RH |
824 | |
825 | /* If there is a base address, make sure that any sections it might | |
826 | mention are initialized. */ | |
827 | if (s->addr_tree != NULL) | |
828 | exp_init_os (s->addr_tree); | |
18794b0c AM |
829 | |
830 | if (s->load_base != NULL) | |
831 | exp_init_os (s->load_base); | |
252b5132 RH |
832 | } |
833 | ||
834 | /* Make sure that all output sections mentioned in an expression are | |
835 | initialized. */ | |
836 | ||
837 | static void | |
1579bae1 | 838 | exp_init_os (etree_type *exp) |
252b5132 RH |
839 | { |
840 | switch (exp->type.node_class) | |
841 | { | |
842 | case etree_assign: | |
843 | exp_init_os (exp->assign.src); | |
844 | break; | |
845 | ||
846 | case etree_binary: | |
847 | exp_init_os (exp->binary.lhs); | |
848 | exp_init_os (exp->binary.rhs); | |
849 | break; | |
850 | ||
851 | case etree_trinary: | |
852 | exp_init_os (exp->trinary.cond); | |
853 | exp_init_os (exp->trinary.lhs); | |
854 | exp_init_os (exp->trinary.rhs); | |
855 | break; | |
856 | ||
b6ca8815 NS |
857 | case etree_assert: |
858 | exp_init_os (exp->assert_s.child); | |
859 | break; | |
860 | ||
252b5132 RH |
861 | case etree_unary: |
862 | exp_init_os (exp->unary.child); | |
863 | break; | |
864 | ||
865 | case etree_name: | |
866 | switch (exp->type.node_code) | |
867 | { | |
868 | case ADDR: | |
869 | case LOADADDR: | |
870 | case SIZEOF: | |
871 | { | |
872 | lang_output_section_statement_type *os; | |
873 | ||
874 | os = lang_output_section_find (exp->name.name); | |
875 | if (os != NULL && os->bfd_section == NULL) | |
876 | init_os (os); | |
877 | } | |
878 | } | |
879 | break; | |
880 | ||
881 | default: | |
882 | break; | |
883 | } | |
884 | } | |
9503fd87 | 885 | \f |
252b5132 | 886 | /* Sections marked with the SEC_LINK_ONCE flag should only be linked |
9503fd87 ILT |
887 | once into the output. This routine checks each section, and |
888 | arrange to discard it if a section of the same name has already | |
bb8fe706 ILT |
889 | been linked. If the section has COMDAT information, then it uses |
890 | that to decide whether the section should be included. This code | |
891 | assumes that all relevant sections have the SEC_LINK_ONCE flag set; | |
9503fd87 ILT |
892 | that is, it does not depend solely upon the section name. |
893 | section_already_linked is called via bfd_map_over_sections. */ | |
894 | ||
895 | /* This is the shape of the elements inside the already_linked hash | |
896 | table. It maps a name onto a list of already_linked elements with | |
897 | the same name. It's possible to get more than one element in a | |
898 | list if the COMDAT sections have different names. */ | |
899 | ||
5f992e62 | 900 | struct already_linked_hash_entry |
9503fd87 ILT |
901 | { |
902 | struct bfd_hash_entry root; | |
903 | struct already_linked *entry; | |
904 | }; | |
905 | ||
5f992e62 | 906 | struct already_linked |
9503fd87 ILT |
907 | { |
908 | struct already_linked *next; | |
909 | asection *sec; | |
910 | }; | |
911 | ||
912 | /* The hash table. */ | |
913 | ||
914 | static struct bfd_hash_table already_linked_table; | |
252b5132 | 915 | |
252b5132 | 916 | static void |
1579bae1 | 917 | section_already_linked (bfd *abfd, asection *sec, void *data) |
252b5132 | 918 | { |
1579bae1 | 919 | lang_input_statement_type *entry = data; |
252b5132 RH |
920 | flagword flags; |
921 | const char *name; | |
9503fd87 ILT |
922 | struct already_linked *l; |
923 | struct already_linked_hash_entry *already_linked_list; | |
252b5132 RH |
924 | |
925 | /* If we are only reading symbols from this object, then we want to | |
926 | discard all sections. */ | |
927 | if (entry->just_syms_flag) | |
928 | { | |
c2c01aa7 | 929 | bfd_link_just_syms (sec, &link_info); |
252b5132 RH |
930 | return; |
931 | } | |
932 | ||
6feb9908 | 933 | flags = sec->flags; |
252b5132 RH |
934 | if ((flags & SEC_LINK_ONCE) == 0) |
935 | return; | |
936 | ||
577a0623 | 937 | /* FIXME: When doing a relocatable link, we may have trouble |
e361c369 ILT |
938 | copying relocations in other sections that refer to local symbols |
939 | in the section being discarded. Those relocations will have to | |
940 | be converted somehow; as of this writing I'm not sure that any of | |
941 | the backends handle that correctly. | |
942 | ||
943 | It is tempting to instead not discard link once sections when | |
577a0623 | 944 | doing a relocatable link (technically, they should be discarded |
e361c369 ILT |
945 | whenever we are building constructors). However, that fails, |
946 | because the linker winds up combining all the link once sections | |
947 | into a single large link once section, which defeats the purpose | |
948 | of having link once sections in the first place. | |
949 | ||
577a0623 | 950 | Also, not merging link once sections in a relocatable link |
9ad85d9b | 951 | causes trouble for MIPS ELF, which relies on link once semantics |
e361c369 ILT |
952 | to handle the .reginfo section correctly. */ |
953 | ||
252b5132 RH |
954 | name = bfd_get_section_name (abfd, sec); |
955 | ||
5f992e62 | 956 | already_linked_list = |
9503fd87 | 957 | ((struct already_linked_hash_entry *) |
b34976b6 | 958 | bfd_hash_lookup (&already_linked_table, name, TRUE, FALSE)); |
9503fd87 | 959 | |
08da4cac | 960 | for (l = already_linked_list->entry; l != NULL; l = l->next) |
252b5132 | 961 | { |
9503fd87 ILT |
962 | if (sec->comdat == NULL |
963 | || l->sec->comdat == NULL | |
964 | || strcmp (sec->comdat->name, l->sec->comdat->name) == 0) | |
252b5132 RH |
965 | { |
966 | /* The section has already been linked. See if we should | |
967 | issue a warning. */ | |
968 | switch (flags & SEC_LINK_DUPLICATES) | |
969 | { | |
970 | default: | |
971 | abort (); | |
972 | ||
973 | case SEC_LINK_DUPLICATES_DISCARD: | |
974 | break; | |
975 | ||
976 | case SEC_LINK_DUPLICATES_ONE_ONLY: | |
bb8fe706 ILT |
977 | if (sec->comdat == NULL) |
978 | einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"), | |
979 | abfd, name); | |
980 | else | |
6feb9908 AM |
981 | einfo (_("%P: %B: warning: ignoring duplicate `%s'" |
982 | " section symbol `%s'\n"), | |
bb8fe706 | 983 | abfd, name, sec->comdat->name); |
252b5132 RH |
984 | break; |
985 | ||
986 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: | |
987 | /* FIXME: We should really dig out the contents of both | |
988 | sections and memcmp them. The COFF/PE spec says that | |
989 | the Microsoft linker does not implement this | |
990 | correctly, so I'm not going to bother doing it | |
991 | either. */ | |
992 | /* Fall through. */ | |
993 | case SEC_LINK_DUPLICATES_SAME_SIZE: | |
994 | if (bfd_section_size (abfd, sec) | |
995 | != bfd_section_size (l->sec->owner, l->sec)) | |
6feb9908 AM |
996 | einfo (_("%P: %B: warning: duplicate section `%s'" |
997 | " has different size\n"), | |
252b5132 RH |
998 | abfd, name); |
999 | break; | |
1000 | } | |
1001 | ||
39dcfe18 AM |
1002 | /* Set the output_section field so that lang_add_section |
1003 | does not create a lang_input_section structure for this | |
f97b9cb8 L |
1004 | section. Since there might be a symbol in the section |
1005 | being discarded, we must retain a pointer to the section | |
1006 | which we are really going to use. */ | |
252b5132 | 1007 | sec->output_section = bfd_abs_section_ptr; |
f97b9cb8 | 1008 | sec->kept_section = l->sec; |
252b5132 | 1009 | |
9ad85d9b AM |
1010 | if (flags & SEC_GROUP) |
1011 | bfd_discard_group (abfd, sec); | |
1012 | ||
252b5132 RH |
1013 | return; |
1014 | } | |
1015 | } | |
1016 | ||
9503fd87 ILT |
1017 | /* This is the first section with this name. Record it. Allocate |
1018 | the memory from the same obstack as the hash table is kept in. */ | |
1019 | ||
1579bae1 | 1020 | l = bfd_hash_allocate (&already_linked_table, sizeof *l); |
252b5132 | 1021 | |
252b5132 | 1022 | l->sec = sec; |
9503fd87 ILT |
1023 | l->next = already_linked_list->entry; |
1024 | already_linked_list->entry = l; | |
1025 | } | |
1026 | ||
1027 | /* Support routines for the hash table used by section_already_linked, | |
1028 | initialize the table, fill in an entry and remove the table. */ | |
1029 | ||
1030 | static struct bfd_hash_entry * | |
1579bae1 AM |
1031 | already_linked_newfunc (struct bfd_hash_entry *entry ATTRIBUTE_UNUSED, |
1032 | struct bfd_hash_table *table, | |
1033 | const char *string ATTRIBUTE_UNUSED) | |
9503fd87 | 1034 | { |
5f992e62 | 1035 | struct already_linked_hash_entry *ret = |
9503fd87 ILT |
1036 | bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry)); |
1037 | ||
1038 | ret->entry = NULL; | |
1039 | ||
1579bae1 | 1040 | return &ret->root; |
9503fd87 ILT |
1041 | } |
1042 | ||
1043 | static void | |
1579bae1 | 1044 | already_linked_table_init (void) |
9503fd87 ILT |
1045 | { |
1046 | if (! bfd_hash_table_init_n (&already_linked_table, | |
1047 | already_linked_newfunc, | |
1048 | 42)) | |
1049 | einfo (_("%P%F: Failed to create hash table\n")); | |
1050 | } | |
1051 | ||
1052 | static void | |
1579bae1 | 1053 | already_linked_table_free (void) |
9503fd87 ILT |
1054 | { |
1055 | bfd_hash_table_free (&already_linked_table); | |
252b5132 RH |
1056 | } |
1057 | \f | |
1058 | /* The wild routines. | |
1059 | ||
1060 | These expand statements like *(.text) and foo.o to a list of | |
1061 | explicit actions, like foo.o(.text), bar.o(.text) and | |
1062 | foo.o(.text, .data). */ | |
1063 | ||
b34976b6 | 1064 | /* Return TRUE if the PATTERN argument is a wildcard pattern. |
252b5132 RH |
1065 | Although backslashes are treated specially if a pattern contains |
1066 | wildcards, we do not consider the mere presence of a backslash to | |
ca0c1d3e | 1067 | be enough to cause the pattern to be treated as a wildcard. |
252b5132 RH |
1068 | That lets us handle DOS filenames more naturally. */ |
1069 | ||
b34976b6 | 1070 | static bfd_boolean |
1579bae1 | 1071 | wildcardp (const char *pattern) |
252b5132 RH |
1072 | { |
1073 | const char *s; | |
1074 | ||
1075 | for (s = pattern; *s != '\0'; ++s) | |
1076 | if (*s == '?' | |
1077 | || *s == '*' | |
1078 | || *s == '[') | |
b34976b6 AM |
1079 | return TRUE; |
1080 | return FALSE; | |
252b5132 RH |
1081 | } |
1082 | ||
1083 | /* Add SECTION to the output section OUTPUT. Do this by creating a | |
1084 | lang_input_section statement which is placed at PTR. FILE is the | |
1085 | input file which holds SECTION. */ | |
1086 | ||
1087 | void | |
1579bae1 AM |
1088 | lang_add_section (lang_statement_list_type *ptr, |
1089 | asection *section, | |
1090 | lang_output_section_statement_type *output, | |
1091 | lang_input_statement_type *file) | |
252b5132 | 1092 | { |
164e712d | 1093 | flagword flags = section->flags; |
b34976b6 | 1094 | bfd_boolean discard; |
252b5132 | 1095 | |
e49f5022 | 1096 | /* Discard sections marked with SEC_EXCLUDE. */ |
b3096250 | 1097 | discard = (flags & SEC_EXCLUDE) != 0; |
252b5132 RH |
1098 | |
1099 | /* Discard input sections which are assigned to a section named | |
1100 | DISCARD_SECTION_NAME. */ | |
1101 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
b34976b6 | 1102 | discard = TRUE; |
252b5132 RH |
1103 | |
1104 | /* Discard debugging sections if we are stripping debugging | |
1105 | information. */ | |
1106 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
1107 | && (flags & SEC_DEBUGGING) != 0) | |
b34976b6 | 1108 | discard = TRUE; |
252b5132 RH |
1109 | |
1110 | if (discard) | |
1111 | { | |
1112 | if (section->output_section == NULL) | |
1113 | { | |
1114 | /* This prevents future calls from assigning this section. */ | |
1115 | section->output_section = bfd_abs_section_ptr; | |
1116 | } | |
1117 | return; | |
1118 | } | |
1119 | ||
1120 | if (section->output_section == NULL) | |
1121 | { | |
b34976b6 | 1122 | bfd_boolean first; |
252b5132 RH |
1123 | lang_input_section_type *new; |
1124 | flagword flags; | |
1125 | ||
1126 | if (output->bfd_section == NULL) | |
d1778b88 AM |
1127 | init_os (output); |
1128 | ||
1129 | first = ! output->bfd_section->linker_has_input; | |
1130 | output->bfd_section->linker_has_input = 1; | |
252b5132 | 1131 | |
08da4cac | 1132 | /* Add a section reference to the list. */ |
252b5132 RH |
1133 | new = new_stat (lang_input_section, ptr); |
1134 | ||
1135 | new->section = section; | |
1136 | new->ifile = file; | |
1137 | section->output_section = output->bfd_section; | |
1138 | ||
1139 | flags = section->flags; | |
1140 | ||
1141 | /* We don't copy the SEC_NEVER_LOAD flag from an input section | |
1142 | to an output section, because we want to be able to include a | |
1143 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
1144 | section (I don't know why we want to do this, but we do). | |
1145 | build_link_order in ldwrite.c handles this case by turning | |
1146 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
1147 | ||
1148 | flags &= ~ SEC_NEVER_LOAD; | |
1149 | ||
1150 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've | |
1151 | already been processed. One reason to do this is that on pe | |
1152 | format targets, .text$foo sections go into .text and it's odd | |
1153 | to see .text with SEC_LINK_ONCE set. */ | |
1154 | ||
1049f94e | 1155 | if (! link_info.relocatable) |
252b5132 RH |
1156 | flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); |
1157 | ||
1158 | /* If this is not the first input section, and the SEC_READONLY | |
1159 | flag is not currently set, then don't set it just because the | |
1160 | input section has it set. */ | |
1161 | ||
1162 | if (! first && (section->output_section->flags & SEC_READONLY) == 0) | |
1163 | flags &= ~ SEC_READONLY; | |
1164 | ||
f5fa8ca2 JJ |
1165 | /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */ |
1166 | if (! first | |
1167 | && ((section->output_section->flags & (SEC_MERGE | SEC_STRINGS)) | |
1168 | != (flags & (SEC_MERGE | SEC_STRINGS)) | |
1169 | || ((flags & SEC_MERGE) | |
1170 | && section->output_section->entsize != section->entsize))) | |
1171 | { | |
1172 | section->output_section->flags &= ~ (SEC_MERGE | SEC_STRINGS); | |
1173 | flags &= ~ (SEC_MERGE | SEC_STRINGS); | |
1174 | } | |
1175 | ||
252b5132 RH |
1176 | section->output_section->flags |= flags; |
1177 | ||
f5fa8ca2 JJ |
1178 | if (flags & SEC_MERGE) |
1179 | section->output_section->entsize = section->entsize; | |
1180 | ||
252b5132 RH |
1181 | /* If SEC_READONLY is not set in the input section, then clear |
1182 | it from the output section. */ | |
1183 | if ((section->flags & SEC_READONLY) == 0) | |
1184 | section->output_section->flags &= ~SEC_READONLY; | |
1185 | ||
1186 | switch (output->sectype) | |
1187 | { | |
1188 | case normal_section: | |
1189 | break; | |
1190 | case dsect_section: | |
1191 | case copy_section: | |
1192 | case info_section: | |
1193 | case overlay_section: | |
1194 | output->bfd_section->flags &= ~SEC_ALLOC; | |
1195 | break; | |
1196 | case noload_section: | |
1197 | output->bfd_section->flags &= ~SEC_LOAD; | |
1198 | output->bfd_section->flags |= SEC_NEVER_LOAD; | |
1199 | break; | |
1200 | } | |
1201 | ||
667f5177 ILT |
1202 | /* Copy over SEC_SMALL_DATA. */ |
1203 | if (section->flags & SEC_SMALL_DATA) | |
1204 | section->output_section->flags |= SEC_SMALL_DATA; | |
9e41f973 | 1205 | |
252b5132 RH |
1206 | if (section->alignment_power > output->bfd_section->alignment_power) |
1207 | output->bfd_section->alignment_power = section->alignment_power; | |
1208 | ||
396a2467 | 1209 | /* If supplied an alignment, then force it. */ |
252b5132 RH |
1210 | if (output->section_alignment != -1) |
1211 | output->bfd_section->alignment_power = output->section_alignment; | |
74459f0e TW |
1212 | |
1213 | if (section->flags & SEC_BLOCK) | |
08da4cac KH |
1214 | { |
1215 | section->output_section->flags |= SEC_BLOCK; | |
1216 | /* FIXME: This value should really be obtained from the bfd... */ | |
1217 | output->block_value = 128; | |
1218 | } | |
252b5132 RH |
1219 | } |
1220 | } | |
1221 | ||
1222 | /* Handle wildcard sorting. This returns the lang_input_section which | |
1223 | should follow the one we are going to create for SECTION and FILE, | |
1224 | based on the sorting requirements of WILD. It returns NULL if the | |
1225 | new section should just go at the end of the current list. */ | |
1226 | ||
1227 | static lang_statement_union_type * | |
1579bae1 AM |
1228 | wild_sort (lang_wild_statement_type *wild, |
1229 | struct wildcard_list *sec, | |
1230 | lang_input_statement_type *file, | |
1231 | asection *section) | |
252b5132 RH |
1232 | { |
1233 | const char *section_name; | |
1234 | lang_statement_union_type *l; | |
1235 | ||
b6bf44ba | 1236 | if (!wild->filenames_sorted && (sec == NULL || !sec->spec.sorted)) |
252b5132 RH |
1237 | return NULL; |
1238 | ||
1239 | section_name = bfd_get_section_name (file->the_bfd, section); | |
bba1a0c0 | 1240 | for (l = wild->children.head; l != NULL; l = l->header.next) |
252b5132 RH |
1241 | { |
1242 | lang_input_section_type *ls; | |
1243 | ||
1244 | if (l->header.type != lang_input_section_enum) | |
1245 | continue; | |
1246 | ls = &l->input_section; | |
1247 | ||
1248 | /* Sorting by filename takes precedence over sorting by section | |
1249 | name. */ | |
1250 | ||
1251 | if (wild->filenames_sorted) | |
1252 | { | |
1253 | const char *fn, *ln; | |
b34976b6 | 1254 | bfd_boolean fa, la; |
252b5132 RH |
1255 | int i; |
1256 | ||
1257 | /* The PE support for the .idata section as generated by | |
1258 | dlltool assumes that files will be sorted by the name of | |
1259 | the archive and then the name of the file within the | |
1260 | archive. */ | |
1261 | ||
1262 | if (file->the_bfd != NULL | |
1263 | && bfd_my_archive (file->the_bfd) != NULL) | |
1264 | { | |
1265 | fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); | |
b34976b6 | 1266 | fa = TRUE; |
252b5132 RH |
1267 | } |
1268 | else | |
1269 | { | |
1270 | fn = file->filename; | |
b34976b6 | 1271 | fa = FALSE; |
252b5132 RH |
1272 | } |
1273 | ||
1274 | if (ls->ifile->the_bfd != NULL | |
1275 | && bfd_my_archive (ls->ifile->the_bfd) != NULL) | |
1276 | { | |
1277 | ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd)); | |
b34976b6 | 1278 | la = TRUE; |
252b5132 RH |
1279 | } |
1280 | else | |
1281 | { | |
1282 | ln = ls->ifile->filename; | |
b34976b6 | 1283 | la = FALSE; |
252b5132 RH |
1284 | } |
1285 | ||
1286 | i = strcmp (fn, ln); | |
1287 | if (i > 0) | |
1288 | continue; | |
1289 | else if (i < 0) | |
1290 | break; | |
1291 | ||
1292 | if (fa || la) | |
1293 | { | |
1294 | if (fa) | |
1295 | fn = file->filename; | |
1296 | if (la) | |
1297 | ln = ls->ifile->filename; | |
1298 | ||
1299 | i = strcmp (fn, ln); | |
1300 | if (i > 0) | |
1301 | continue; | |
1302 | else if (i < 0) | |
1303 | break; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /* Here either the files are not sorted by name, or we are | |
1308 | looking at the sections for this file. */ | |
1309 | ||
b6bf44ba | 1310 | if (sec != NULL && sec->spec.sorted) |
252b5132 RH |
1311 | { |
1312 | if (strcmp (section_name, | |
1313 | bfd_get_section_name (ls->ifile->the_bfd, | |
1314 | ls->section)) | |
1315 | < 0) | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | return l; | |
1321 | } | |
1322 | ||
1323 | /* Expand a wild statement for a particular FILE. SECTION may be | |
1324 | NULL, in which case it is a wild card. */ | |
1325 | ||
1326 | static void | |
1579bae1 AM |
1327 | output_section_callback (lang_wild_statement_type *ptr, |
1328 | struct wildcard_list *sec, | |
1329 | asection *section, | |
1330 | lang_input_statement_type *file, | |
1331 | void *output) | |
4dec4d4e RH |
1332 | { |
1333 | lang_statement_union_type *before; | |
5f992e62 | 1334 | |
b6bf44ba | 1335 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
d0d6a25b | 1336 | if (unique_section_p (section)) |
b6bf44ba AM |
1337 | return; |
1338 | ||
b6bf44ba | 1339 | before = wild_sort (ptr, sec, file, section); |
5f992e62 | 1340 | |
4dec4d4e RH |
1341 | /* Here BEFORE points to the lang_input_section which |
1342 | should follow the one we are about to add. If BEFORE | |
1343 | is NULL, then the section should just go at the end | |
1344 | of the current list. */ | |
5f992e62 | 1345 | |
4dec4d4e | 1346 | if (before == NULL) |
39dcfe18 AM |
1347 | lang_add_section (&ptr->children, section, |
1348 | (lang_output_section_statement_type *) output, | |
1349 | file); | |
4dec4d4e | 1350 | else |
252b5132 | 1351 | { |
4dec4d4e RH |
1352 | lang_statement_list_type list; |
1353 | lang_statement_union_type **pp; | |
5f992e62 | 1354 | |
4dec4d4e | 1355 | lang_list_init (&list); |
39dcfe18 AM |
1356 | lang_add_section (&list, section, |
1357 | (lang_output_section_statement_type *) output, | |
1358 | file); | |
5f992e62 | 1359 | |
4dec4d4e RH |
1360 | /* If we are discarding the section, LIST.HEAD will |
1361 | be NULL. */ | |
1362 | if (list.head != NULL) | |
252b5132 | 1363 | { |
bba1a0c0 | 1364 | ASSERT (list.head->header.next == NULL); |
5f992e62 | 1365 | |
4dec4d4e RH |
1366 | for (pp = &ptr->children.head; |
1367 | *pp != before; | |
bba1a0c0 | 1368 | pp = &(*pp)->header.next) |
4dec4d4e | 1369 | ASSERT (*pp != NULL); |
5f992e62 | 1370 | |
bba1a0c0 | 1371 | list.head->header.next = *pp; |
4dec4d4e | 1372 | *pp = list.head; |
252b5132 RH |
1373 | } |
1374 | } | |
1375 | } | |
1376 | ||
0841712e JJ |
1377 | /* Check if all sections in a wild statement for a particular FILE |
1378 | are readonly. */ | |
1379 | ||
1380 | static void | |
1381 | check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED, | |
1382 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
1383 | asection *section, | |
1384 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
6feb9908 | 1385 | void *data) |
0841712e JJ |
1386 | { |
1387 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ | |
1388 | if (unique_section_p (section)) | |
1389 | return; | |
1390 | ||
6feb9908 AM |
1391 | if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0) |
1392 | ((lang_output_section_statement_type *) data)->all_input_readonly = FALSE; | |
0841712e JJ |
1393 | } |
1394 | ||
252b5132 RH |
1395 | /* This is passed a file name which must have been seen already and |
1396 | added to the statement tree. We will see if it has been opened | |
1397 | already and had its symbols read. If not then we'll read it. */ | |
1398 | ||
1399 | static lang_input_statement_type * | |
1579bae1 | 1400 | lookup_name (const char *name) |
252b5132 RH |
1401 | { |
1402 | lang_input_statement_type *search; | |
1403 | ||
1404 | for (search = (lang_input_statement_type *) input_file_chain.head; | |
1579bae1 | 1405 | search != NULL; |
252b5132 RH |
1406 | search = (lang_input_statement_type *) search->next_real_file) |
1407 | { | |
0013291d NC |
1408 | /* Use the local_sym_name as the name of the file that has |
1409 | already been loaded as filename might have been transformed | |
1410 | via the search directory lookup mechanism. */ | |
1411 | const char * filename = search->local_sym_name; | |
1412 | ||
1413 | if (filename == NULL && name == NULL) | |
252b5132 | 1414 | return search; |
0013291d | 1415 | if (filename != NULL |
1579bae1 | 1416 | && name != NULL |
0013291d | 1417 | && strcmp (filename, name) == 0) |
252b5132 RH |
1418 | break; |
1419 | } | |
1420 | ||
1579bae1 | 1421 | if (search == NULL) |
6feb9908 AM |
1422 | search = new_afile (name, lang_input_file_is_search_file_enum, |
1423 | default_target, FALSE); | |
252b5132 RH |
1424 | |
1425 | /* If we have already added this file, or this file is not real | |
1426 | (FIXME: can that ever actually happen?) or the name is NULL | |
1427 | (FIXME: can that ever actually happen?) don't add this file. */ | |
1428 | if (search->loaded | |
1429 | || ! search->real | |
1579bae1 | 1430 | || search->filename == NULL) |
252b5132 RH |
1431 | return search; |
1432 | ||
1579bae1 | 1433 | if (! load_symbols (search, NULL)) |
6770ec8c | 1434 | return NULL; |
252b5132 RH |
1435 | |
1436 | return search; | |
1437 | } | |
1438 | ||
1439 | /* Get the symbols for an input file. */ | |
1440 | ||
b34976b6 | 1441 | static bfd_boolean |
1579bae1 AM |
1442 | load_symbols (lang_input_statement_type *entry, |
1443 | lang_statement_list_type *place) | |
252b5132 RH |
1444 | { |
1445 | char **matching; | |
1446 | ||
1447 | if (entry->loaded) | |
b34976b6 | 1448 | return TRUE; |
252b5132 RH |
1449 | |
1450 | ldfile_open_file (entry); | |
1451 | ||
1452 | if (! bfd_check_format (entry->the_bfd, bfd_archive) | |
1453 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
1454 | { | |
1455 | bfd_error_type err; | |
1456 | lang_statement_list_type *hold; | |
b34976b6 | 1457 | bfd_boolean bad_load = TRUE; |
e3f2db7f | 1458 | bfd_boolean save_ldlang_sysrooted_script; |
b7a26f91 | 1459 | |
252b5132 | 1460 | err = bfd_get_error (); |
884fb58e NC |
1461 | |
1462 | /* See if the emulation has some special knowledge. */ | |
1463 | if (ldemul_unrecognized_file (entry)) | |
b34976b6 | 1464 | return TRUE; |
884fb58e | 1465 | |
252b5132 RH |
1466 | if (err == bfd_error_file_ambiguously_recognized) |
1467 | { | |
1468 | char **p; | |
1469 | ||
1470 | einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); | |
1471 | einfo (_("%B: matching formats:"), entry->the_bfd); | |
1472 | for (p = matching; *p != NULL; p++) | |
1473 | einfo (" %s", *p); | |
1474 | einfo ("%F\n"); | |
1475 | } | |
1476 | else if (err != bfd_error_file_not_recognized | |
1477 | || place == NULL) | |
6770ec8c NC |
1478 | einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); |
1479 | else | |
b34976b6 | 1480 | bad_load = FALSE; |
b7a26f91 | 1481 | |
252b5132 RH |
1482 | bfd_close (entry->the_bfd); |
1483 | entry->the_bfd = NULL; | |
1484 | ||
252b5132 | 1485 | /* Try to interpret the file as a linker script. */ |
252b5132 RH |
1486 | ldfile_open_command_file (entry->filename); |
1487 | ||
1488 | hold = stat_ptr; | |
1489 | stat_ptr = place; | |
e3f2db7f AO |
1490 | save_ldlang_sysrooted_script = ldlang_sysrooted_script; |
1491 | ldlang_sysrooted_script = entry->sysrooted; | |
252b5132 | 1492 | |
b34976b6 | 1493 | ldfile_assumed_script = TRUE; |
252b5132 RH |
1494 | parser_input = input_script; |
1495 | yyparse (); | |
b34976b6 | 1496 | ldfile_assumed_script = FALSE; |
252b5132 | 1497 | |
e3f2db7f | 1498 | ldlang_sysrooted_script = save_ldlang_sysrooted_script; |
252b5132 RH |
1499 | stat_ptr = hold; |
1500 | ||
6770ec8c | 1501 | return ! bad_load; |
252b5132 RH |
1502 | } |
1503 | ||
1504 | if (ldemul_recognized_file (entry)) | |
b34976b6 | 1505 | return TRUE; |
252b5132 RH |
1506 | |
1507 | /* We don't call ldlang_add_file for an archive. Instead, the | |
1508 | add_symbols entry point will call ldlang_add_file, via the | |
1509 | add_archive_element callback, for each element of the archive | |
1510 | which is used. */ | |
1511 | switch (bfd_get_format (entry->the_bfd)) | |
1512 | { | |
1513 | default: | |
1514 | break; | |
1515 | ||
1516 | case bfd_object: | |
1517 | ldlang_add_file (entry); | |
1518 | if (trace_files || trace_file_tries) | |
1519 | info_msg ("%I\n", entry); | |
1520 | break; | |
1521 | ||
1522 | case bfd_archive: | |
1523 | if (entry->whole_archive) | |
1524 | { | |
b7a26f91 | 1525 | bfd *member = NULL; |
b34976b6 | 1526 | bfd_boolean loaded = TRUE; |
6770ec8c NC |
1527 | |
1528 | for (;;) | |
252b5132 | 1529 | { |
6770ec8c NC |
1530 | member = bfd_openr_next_archived_file (entry->the_bfd, member); |
1531 | ||
1532 | if (member == NULL) | |
1533 | break; | |
b7a26f91 | 1534 | |
252b5132 | 1535 | if (! bfd_check_format (member, bfd_object)) |
6770ec8c NC |
1536 | { |
1537 | einfo (_("%F%B: member %B in archive is not an object\n"), | |
1538 | entry->the_bfd, member); | |
b34976b6 | 1539 | loaded = FALSE; |
6770ec8c NC |
1540 | } |
1541 | ||
252b5132 RH |
1542 | if (! ((*link_info.callbacks->add_archive_element) |
1543 | (&link_info, member, "--whole-archive"))) | |
1544 | abort (); | |
6770ec8c | 1545 | |
252b5132 | 1546 | if (! bfd_link_add_symbols (member, &link_info)) |
6770ec8c NC |
1547 | { |
1548 | einfo (_("%F%B: could not read symbols: %E\n"), member); | |
b34976b6 | 1549 | loaded = FALSE; |
6770ec8c | 1550 | } |
252b5132 RH |
1551 | } |
1552 | ||
6770ec8c NC |
1553 | entry->loaded = loaded; |
1554 | return loaded; | |
252b5132 | 1555 | } |
6770ec8c | 1556 | break; |
252b5132 RH |
1557 | } |
1558 | ||
03bdc404 | 1559 | if (bfd_link_add_symbols (entry->the_bfd, &link_info)) |
b34976b6 | 1560 | entry->loaded = TRUE; |
6770ec8c | 1561 | else |
252b5132 RH |
1562 | einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); |
1563 | ||
6770ec8c | 1564 | return entry->loaded; |
252b5132 RH |
1565 | } |
1566 | ||
b6bf44ba AM |
1567 | /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both |
1568 | may be NULL, indicating that it is a wildcard. Separate | |
1569 | lang_input_section statements are created for each part of the | |
1570 | expansion; they are added after the wild statement S. OUTPUT is | |
1571 | the output section. */ | |
252b5132 RH |
1572 | |
1573 | static void | |
1579bae1 AM |
1574 | wild (lang_wild_statement_type *s, |
1575 | const char *target ATTRIBUTE_UNUSED, | |
1576 | lang_output_section_statement_type *output) | |
252b5132 | 1577 | { |
b6bf44ba | 1578 | struct wildcard_list *sec; |
252b5132 | 1579 | |
1579bae1 | 1580 | walk_wild (s, output_section_callback, output); |
b6bf44ba AM |
1581 | |
1582 | for (sec = s->section_list; sec != NULL; sec = sec->next) | |
252b5132 | 1583 | { |
b6bf44ba AM |
1584 | if (default_common_section != NULL) |
1585 | break; | |
1586 | if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0) | |
1587 | { | |
1588 | /* Remember the section that common is going to in case we | |
b7a26f91 | 1589 | later get something which doesn't know where to put it. */ |
b6bf44ba AM |
1590 | default_common_section = output; |
1591 | } | |
252b5132 RH |
1592 | } |
1593 | } | |
1594 | ||
b34976b6 | 1595 | /* Return TRUE iff target is the sought target. */ |
08da4cac | 1596 | |
e50d8076 | 1597 | static int |
1579bae1 | 1598 | get_target (const bfd_target *target, void *data) |
e50d8076 | 1599 | { |
1579bae1 | 1600 | const char *sought = data; |
5f992e62 | 1601 | |
e50d8076 NC |
1602 | return strcmp (target->name, sought) == 0; |
1603 | } | |
1604 | ||
1605 | /* Like strcpy() but convert to lower case as well. */ | |
08da4cac | 1606 | |
e50d8076 | 1607 | static void |
1579bae1 | 1608 | stricpy (char *dest, char *src) |
e50d8076 NC |
1609 | { |
1610 | char c; | |
5f992e62 | 1611 | |
08da4cac | 1612 | while ((c = *src++) != 0) |
3882b010 | 1613 | *dest++ = TOLOWER (c); |
e50d8076 | 1614 | |
08da4cac | 1615 | *dest = 0; |
e50d8076 NC |
1616 | } |
1617 | ||
396a2467 | 1618 | /* Remove the first occurrence of needle (if any) in haystack |
e50d8076 | 1619 | from haystack. */ |
08da4cac | 1620 | |
e50d8076 | 1621 | static void |
1579bae1 | 1622 | strcut (char *haystack, char *needle) |
e50d8076 NC |
1623 | { |
1624 | haystack = strstr (haystack, needle); | |
5f992e62 | 1625 | |
e50d8076 NC |
1626 | if (haystack) |
1627 | { | |
08da4cac | 1628 | char *src; |
e50d8076 | 1629 | |
08da4cac KH |
1630 | for (src = haystack + strlen (needle); *src;) |
1631 | *haystack++ = *src++; | |
5f992e62 | 1632 | |
08da4cac | 1633 | *haystack = 0; |
e50d8076 NC |
1634 | } |
1635 | } | |
1636 | ||
1637 | /* Compare two target format name strings. | |
1638 | Return a value indicating how "similar" they are. */ | |
08da4cac | 1639 | |
e50d8076 | 1640 | static int |
1579bae1 | 1641 | name_compare (char *first, char *second) |
e50d8076 | 1642 | { |
08da4cac KH |
1643 | char *copy1; |
1644 | char *copy2; | |
1645 | int result; | |
5f992e62 | 1646 | |
e50d8076 NC |
1647 | copy1 = xmalloc (strlen (first) + 1); |
1648 | copy2 = xmalloc (strlen (second) + 1); | |
1649 | ||
1650 | /* Convert the names to lower case. */ | |
1651 | stricpy (copy1, first); | |
1652 | stricpy (copy2, second); | |
1653 | ||
1579bae1 | 1654 | /* Remove size and endian strings from the name. */ |
e50d8076 NC |
1655 | strcut (copy1, "big"); |
1656 | strcut (copy1, "little"); | |
1657 | strcut (copy2, "big"); | |
1658 | strcut (copy2, "little"); | |
1659 | ||
1660 | /* Return a value based on how many characters match, | |
1661 | starting from the beginning. If both strings are | |
1662 | the same then return 10 * their length. */ | |
08da4cac KH |
1663 | for (result = 0; copy1[result] == copy2[result]; result++) |
1664 | if (copy1[result] == 0) | |
e50d8076 NC |
1665 | { |
1666 | result *= 10; | |
1667 | break; | |
1668 | } | |
5f992e62 | 1669 | |
e50d8076 NC |
1670 | free (copy1); |
1671 | free (copy2); | |
1672 | ||
1673 | return result; | |
1674 | } | |
1675 | ||
1676 | /* Set by closest_target_match() below. */ | |
08da4cac | 1677 | static const bfd_target *winner; |
e50d8076 NC |
1678 | |
1679 | /* Scan all the valid bfd targets looking for one that has the endianness | |
1680 | requirement that was specified on the command line, and is the nearest | |
1681 | match to the original output target. */ | |
08da4cac | 1682 | |
e50d8076 | 1683 | static int |
1579bae1 | 1684 | closest_target_match (const bfd_target *target, void *data) |
e50d8076 | 1685 | { |
1579bae1 | 1686 | const bfd_target *original = data; |
5f992e62 | 1687 | |
08da4cac KH |
1688 | if (command_line.endian == ENDIAN_BIG |
1689 | && target->byteorder != BFD_ENDIAN_BIG) | |
e50d8076 | 1690 | return 0; |
5f992e62 | 1691 | |
08da4cac KH |
1692 | if (command_line.endian == ENDIAN_LITTLE |
1693 | && target->byteorder != BFD_ENDIAN_LITTLE) | |
e50d8076 NC |
1694 | return 0; |
1695 | ||
1696 | /* Must be the same flavour. */ | |
1697 | if (target->flavour != original->flavour) | |
1698 | return 0; | |
1699 | ||
1700 | /* If we have not found a potential winner yet, then record this one. */ | |
1701 | if (winner == NULL) | |
1702 | { | |
1703 | winner = target; | |
1704 | return 0; | |
1705 | } | |
1706 | ||
1707 | /* Oh dear, we now have two potential candidates for a successful match. | |
4de2d33d | 1708 | Compare their names and choose the better one. */ |
d1778b88 AM |
1709 | if (name_compare (target->name, original->name) |
1710 | > name_compare (winner->name, original->name)) | |
e50d8076 NC |
1711 | winner = target; |
1712 | ||
1713 | /* Keep on searching until wqe have checked them all. */ | |
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | /* Return the BFD target format of the first input file. */ | |
08da4cac | 1718 | |
e50d8076 | 1719 | static char * |
1579bae1 | 1720 | get_first_input_target (void) |
e50d8076 | 1721 | { |
08da4cac | 1722 | char *target = NULL; |
e50d8076 NC |
1723 | |
1724 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
1725 | { | |
1726 | if (s->header.type == lang_input_statement_enum | |
1727 | && s->real) | |
1728 | { | |
1729 | ldfile_open_file (s); | |
5f992e62 | 1730 | |
e50d8076 NC |
1731 | if (s->the_bfd != NULL |
1732 | && bfd_check_format (s->the_bfd, bfd_object)) | |
1733 | { | |
1734 | target = bfd_get_target (s->the_bfd); | |
5f992e62 | 1735 | |
e50d8076 NC |
1736 | if (target != NULL) |
1737 | break; | |
1738 | } | |
1739 | } | |
1740 | } | |
5f992e62 | 1741 | |
e50d8076 NC |
1742 | return target; |
1743 | } | |
1744 | ||
599917b8 | 1745 | const char * |
1579bae1 | 1746 | lang_get_output_target (void) |
599917b8 JJ |
1747 | { |
1748 | const char *target; | |
1749 | ||
1750 | /* Has the user told us which output format to use? */ | |
1579bae1 | 1751 | if (output_target != NULL) |
599917b8 JJ |
1752 | return output_target; |
1753 | ||
1754 | /* No - has the current target been set to something other than | |
1755 | the default? */ | |
1756 | if (current_target != default_target) | |
1757 | return current_target; | |
1758 | ||
1759 | /* No - can we determine the format of the first input file? */ | |
1760 | target = get_first_input_target (); | |
1761 | if (target != NULL) | |
1762 | return target; | |
1763 | ||
1764 | /* Failed - use the default output target. */ | |
1765 | return default_target; | |
1766 | } | |
1767 | ||
252b5132 RH |
1768 | /* Open the output file. */ |
1769 | ||
1770 | static bfd * | |
1579bae1 | 1771 | open_output (const char *name) |
252b5132 | 1772 | { |
08da4cac | 1773 | bfd *output; |
252b5132 | 1774 | |
599917b8 | 1775 | output_target = lang_get_output_target (); |
5f992e62 | 1776 | |
08da4cac KH |
1777 | /* Has the user requested a particular endianness on the command |
1778 | line? */ | |
e50d8076 NC |
1779 | if (command_line.endian != ENDIAN_UNSET) |
1780 | { | |
08da4cac | 1781 | const bfd_target *target; |
1b69a0bf | 1782 | enum bfd_endian desired_endian; |
e50d8076 NC |
1783 | |
1784 | /* Get the chosen target. */ | |
1579bae1 | 1785 | target = bfd_search_for_target (get_target, (void *) output_target); |
e50d8076 | 1786 | |
c13b1b77 NC |
1787 | /* If the target is not supported, we cannot do anything. */ |
1788 | if (target != NULL) | |
e50d8076 | 1789 | { |
c13b1b77 NC |
1790 | if (command_line.endian == ENDIAN_BIG) |
1791 | desired_endian = BFD_ENDIAN_BIG; | |
e50d8076 | 1792 | else |
c13b1b77 | 1793 | desired_endian = BFD_ENDIAN_LITTLE; |
5f992e62 AM |
1794 | |
1795 | /* See if the target has the wrong endianness. This should | |
1796 | not happen if the linker script has provided big and | |
1797 | little endian alternatives, but some scrips don't do | |
1798 | this. */ | |
c13b1b77 | 1799 | if (target->byteorder != desired_endian) |
e50d8076 | 1800 | { |
c13b1b77 NC |
1801 | /* If it does, then see if the target provides |
1802 | an alternative with the correct endianness. */ | |
1803 | if (target->alternative_target != NULL | |
1804 | && (target->alternative_target->byteorder == desired_endian)) | |
1805 | output_target = target->alternative_target->name; | |
e50d8076 | 1806 | else |
c13b1b77 | 1807 | { |
5f992e62 AM |
1808 | /* Try to find a target as similar as possible to |
1809 | the default target, but which has the desired | |
1810 | endian characteristic. */ | |
1579bae1 AM |
1811 | bfd_search_for_target (closest_target_match, |
1812 | (void *) target); | |
5f992e62 AM |
1813 | |
1814 | /* Oh dear - we could not find any targets that | |
1815 | satisfy our requirements. */ | |
c13b1b77 | 1816 | if (winner == NULL) |
6feb9908 AM |
1817 | einfo (_("%P: warning: could not find any targets" |
1818 | " that match endianness requirement\n")); | |
c13b1b77 NC |
1819 | else |
1820 | output_target = winner->name; | |
1821 | } | |
e50d8076 NC |
1822 | } |
1823 | } | |
252b5132 | 1824 | } |
5f992e62 | 1825 | |
252b5132 RH |
1826 | output = bfd_openw (name, output_target); |
1827 | ||
1579bae1 | 1828 | if (output == NULL) |
252b5132 RH |
1829 | { |
1830 | if (bfd_get_error () == bfd_error_invalid_target) | |
e50d8076 NC |
1831 | einfo (_("%P%F: target %s not found\n"), output_target); |
1832 | ||
252b5132 RH |
1833 | einfo (_("%P%F: cannot open output file %s: %E\n"), name); |
1834 | } | |
1835 | ||
b34976b6 | 1836 | delete_output_file_on_failure = TRUE; |
252b5132 | 1837 | |
08da4cac KH |
1838 | #if 0 |
1839 | output->flags |= D_PAGED; | |
1840 | #endif | |
252b5132 RH |
1841 | |
1842 | if (! bfd_set_format (output, bfd_object)) | |
1843 | einfo (_("%P%F:%s: can not make object file: %E\n"), name); | |
1844 | if (! bfd_set_arch_mach (output, | |
1845 | ldfile_output_architecture, | |
1846 | ldfile_output_machine)) | |
1847 | einfo (_("%P%F:%s: can not set architecture: %E\n"), name); | |
1848 | ||
1849 | link_info.hash = bfd_link_hash_table_create (output); | |
1579bae1 | 1850 | if (link_info.hash == NULL) |
252b5132 RH |
1851 | einfo (_("%P%F: can not create link hash table: %E\n")); |
1852 | ||
1853 | bfd_set_gp_size (output, g_switch_value); | |
1854 | return output; | |
1855 | } | |
1856 | ||
252b5132 | 1857 | static void |
1579bae1 | 1858 | ldlang_open_output (lang_statement_union_type *statement) |
252b5132 RH |
1859 | { |
1860 | switch (statement->header.type) | |
1861 | { | |
1862 | case lang_output_statement_enum: | |
1579bae1 | 1863 | ASSERT (output_bfd == NULL); |
252b5132 RH |
1864 | output_bfd = open_output (statement->output_statement.name); |
1865 | ldemul_set_output_arch (); | |
1049f94e | 1866 | if (config.magic_demand_paged && !link_info.relocatable) |
252b5132 RH |
1867 | output_bfd->flags |= D_PAGED; |
1868 | else | |
1869 | output_bfd->flags &= ~D_PAGED; | |
1870 | if (config.text_read_only) | |
1871 | output_bfd->flags |= WP_TEXT; | |
1872 | else | |
1873 | output_bfd->flags &= ~WP_TEXT; | |
1874 | if (link_info.traditional_format) | |
1875 | output_bfd->flags |= BFD_TRADITIONAL_FORMAT; | |
1876 | else | |
1877 | output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; | |
1878 | break; | |
1879 | ||
1880 | case lang_target_statement_enum: | |
1881 | current_target = statement->target_statement.target; | |
1882 | break; | |
1883 | default: | |
1884 | break; | |
1885 | } | |
1886 | } | |
1887 | ||
e5caa5e0 AM |
1888 | /* Convert between addresses in bytes and sizes in octets. |
1889 | For currently supported targets, octets_per_byte is always a power | |
1890 | of two, so we can use shifts. */ | |
1891 | #define TO_ADDR(X) ((X) >> opb_shift) | |
1892 | #define TO_SIZE(X) ((X) << opb_shift) | |
1893 | ||
1894 | /* Support the above. */ | |
1895 | static unsigned int opb_shift = 0; | |
1896 | ||
1897 | static void | |
1898 | init_opb (void) | |
1899 | { | |
1900 | unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, | |
1901 | ldfile_output_machine); | |
1902 | opb_shift = 0; | |
1903 | if (x > 1) | |
1904 | while ((x & 1) == 0) | |
1905 | { | |
1906 | x >>= 1; | |
1907 | ++opb_shift; | |
1908 | } | |
1909 | ASSERT (x == 1); | |
1910 | } | |
1911 | ||
252b5132 RH |
1912 | /* Open all the input files. */ |
1913 | ||
1914 | static void | |
1579bae1 | 1915 | open_input_bfds (lang_statement_union_type *s, bfd_boolean force) |
252b5132 | 1916 | { |
1579bae1 | 1917 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
1918 | { |
1919 | switch (s->header.type) | |
1920 | { | |
1921 | case lang_constructors_statement_enum: | |
1922 | open_input_bfds (constructor_list.head, force); | |
1923 | break; | |
1924 | case lang_output_section_statement_enum: | |
1925 | open_input_bfds (s->output_section_statement.children.head, force); | |
1926 | break; | |
1927 | case lang_wild_statement_enum: | |
08da4cac | 1928 | /* Maybe we should load the file's symbols. */ |
252b5132 RH |
1929 | if (s->wild_statement.filename |
1930 | && ! wildcardp (s->wild_statement.filename)) | |
4a43e768 | 1931 | lookup_name (s->wild_statement.filename); |
252b5132 RH |
1932 | open_input_bfds (s->wild_statement.children.head, force); |
1933 | break; | |
1934 | case lang_group_statement_enum: | |
1935 | { | |
1936 | struct bfd_link_hash_entry *undefs; | |
1937 | ||
1938 | /* We must continually search the entries in the group | |
08da4cac KH |
1939 | until no new symbols are added to the list of undefined |
1940 | symbols. */ | |
252b5132 RH |
1941 | |
1942 | do | |
1943 | { | |
1944 | undefs = link_info.hash->undefs_tail; | |
b34976b6 | 1945 | open_input_bfds (s->group_statement.children.head, TRUE); |
252b5132 RH |
1946 | } |
1947 | while (undefs != link_info.hash->undefs_tail); | |
1948 | } | |
1949 | break; | |
1950 | case lang_target_statement_enum: | |
1951 | current_target = s->target_statement.target; | |
1952 | break; | |
1953 | case lang_input_statement_enum: | |
e50d8076 | 1954 | if (s->input_statement.real) |
252b5132 RH |
1955 | { |
1956 | lang_statement_list_type add; | |
1957 | ||
1958 | s->input_statement.target = current_target; | |
1959 | ||
1960 | /* If we are being called from within a group, and this | |
1961 | is an archive which has already been searched, then | |
cd4c806a L |
1962 | force it to be researched unless the whole archive |
1963 | has been loaded already. */ | |
252b5132 | 1964 | if (force |
cd4c806a | 1965 | && !s->input_statement.whole_archive |
252b5132 RH |
1966 | && s->input_statement.loaded |
1967 | && bfd_check_format (s->input_statement.the_bfd, | |
1968 | bfd_archive)) | |
b34976b6 | 1969 | s->input_statement.loaded = FALSE; |
252b5132 | 1970 | |
d1778b88 | 1971 | lang_list_init (&add); |
1276aefa | 1972 | |
6770ec8c | 1973 | if (! load_symbols (&s->input_statement, &add)) |
b34976b6 | 1974 | config.make_executable = FALSE; |
252b5132 RH |
1975 | |
1976 | if (add.head != NULL) | |
1977 | { | |
bba1a0c0 AM |
1978 | *add.tail = s->header.next; |
1979 | s->header.next = add.head; | |
252b5132 RH |
1980 | } |
1981 | } | |
1982 | break; | |
1983 | default: | |
1984 | break; | |
1985 | } | |
1986 | } | |
1987 | } | |
1988 | ||
08da4cac KH |
1989 | /* If there are [COMMONS] statements, put a wild one into the bss |
1990 | section. */ | |
252b5132 RH |
1991 | |
1992 | static void | |
1579bae1 | 1993 | lang_reasonable_defaults (void) |
252b5132 RH |
1994 | { |
1995 | #if 0 | |
1996 | lang_output_section_statement_lookup (".text"); | |
1997 | lang_output_section_statement_lookup (".data"); | |
1998 | ||
08da4cac | 1999 | default_common_section = lang_output_section_statement_lookup (".bss"); |
252b5132 | 2000 | |
7c519c12 | 2001 | if (!placed_commons) |
252b5132 RH |
2002 | { |
2003 | lang_wild_statement_type *new = | |
2004 | new_stat (lang_wild_statement, | |
2005 | &default_common_section->children); | |
2006 | ||
2007 | new->section_name = "COMMON"; | |
1579bae1 | 2008 | new->filename = NULL; |
252b5132 RH |
2009 | lang_list_init (&new->children); |
2010 | } | |
2011 | #endif | |
252b5132 RH |
2012 | } |
2013 | ||
420e579c HPN |
2014 | /* Add a symbol to a hash of symbols used in DEFINED (NAME) expressions. */ |
2015 | ||
2016 | void | |
2017 | lang_track_definedness (const char *name) | |
2018 | { | |
2019 | if (bfd_hash_lookup (&lang_definedness_table, name, TRUE, FALSE) == NULL) | |
2020 | einfo (_("%P%F: bfd_hash_lookup failed creating symbol %s\n"), name); | |
2021 | } | |
2022 | ||
2023 | /* New-function for the definedness hash table. */ | |
2024 | ||
2025 | static struct bfd_hash_entry * | |
2026 | lang_definedness_newfunc (struct bfd_hash_entry *entry, | |
2027 | struct bfd_hash_table *table ATTRIBUTE_UNUSED, | |
2028 | const char *name ATTRIBUTE_UNUSED) | |
2029 | { | |
2030 | struct lang_definedness_hash_entry *ret | |
2031 | = (struct lang_definedness_hash_entry *) entry; | |
2032 | ||
2033 | if (ret == NULL) | |
2034 | ret = (struct lang_definedness_hash_entry *) | |
2035 | bfd_hash_allocate (table, sizeof (struct lang_definedness_hash_entry)); | |
2036 | ||
2037 | if (ret == NULL) | |
2038 | einfo (_("%P%F: bfd_hash_allocate failed creating symbol %s\n"), name); | |
2039 | ||
2040 | ret->iteration = -1; | |
2041 | return &ret->root; | |
2042 | } | |
2043 | ||
2044 | /* Return the iteration when the definition of NAME was last updated. A | |
2045 | value of -1 means that the symbol is not defined in the linker script | |
2046 | or the command line, but may be defined in the linker symbol table. */ | |
2047 | ||
2048 | int | |
2049 | lang_symbol_definition_iteration (const char *name) | |
2050 | { | |
2051 | struct lang_definedness_hash_entry *defentry | |
2052 | = (struct lang_definedness_hash_entry *) | |
2053 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
2054 | ||
2055 | /* We've already created this one on the presence of DEFINED in the | |
2056 | script, so it can't be NULL unless something is borked elsewhere in | |
2057 | the code. */ | |
2058 | if (defentry == NULL) | |
2059 | FAIL (); | |
2060 | ||
2061 | return defentry->iteration; | |
2062 | } | |
2063 | ||
2064 | /* Update the definedness state of NAME. */ | |
2065 | ||
2066 | void | |
2067 | lang_update_definedness (const char *name, struct bfd_link_hash_entry *h) | |
2068 | { | |
2069 | struct lang_definedness_hash_entry *defentry | |
2070 | = (struct lang_definedness_hash_entry *) | |
2071 | bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE); | |
2072 | ||
2073 | /* We don't keep track of symbols not tested with DEFINED. */ | |
2074 | if (defentry == NULL) | |
2075 | return; | |
2076 | ||
2077 | /* If the symbol was already defined, and not from an earlier statement | |
2078 | iteration, don't update the definedness iteration, because that'd | |
2079 | make the symbol seem defined in the linker script at this point, and | |
2080 | it wasn't; it was defined in some object. If we do anyway, DEFINED | |
2081 | would start to yield false before this point and the construct "sym = | |
2082 | DEFINED (sym) ? sym : X;" would change sym to X despite being defined | |
2083 | in an object. */ | |
2084 | if (h->type != bfd_link_hash_undefined | |
2085 | && h->type != bfd_link_hash_common | |
2086 | && h->type != bfd_link_hash_new | |
2087 | && defentry->iteration == -1) | |
2088 | return; | |
2089 | ||
2090 | defentry->iteration = lang_statement_iteration; | |
2091 | } | |
2092 | ||
08da4cac | 2093 | /* Add the supplied name to the symbol table as an undefined reference. |
fcf0e35b AM |
2094 | This is a two step process as the symbol table doesn't even exist at |
2095 | the time the ld command line is processed. First we put the name | |
2096 | on a list, then, once the output file has been opened, transfer the | |
2097 | name to the symbol table. */ | |
2098 | ||
e3e942e9 | 2099 | typedef struct bfd_sym_chain ldlang_undef_chain_list_type; |
252b5132 | 2100 | |
e3e942e9 | 2101 | #define ldlang_undef_chain_list_head entry_symbol.next |
252b5132 RH |
2102 | |
2103 | void | |
1579bae1 | 2104 | ldlang_add_undef (const char *const name) |
252b5132 RH |
2105 | { |
2106 | ldlang_undef_chain_list_type *new = | |
1579bae1 | 2107 | stat_alloc (sizeof (ldlang_undef_chain_list_type)); |
252b5132 RH |
2108 | |
2109 | new->next = ldlang_undef_chain_list_head; | |
2110 | ldlang_undef_chain_list_head = new; | |
2111 | ||
d1b2b2dc | 2112 | new->name = xstrdup (name); |
fcf0e35b AM |
2113 | |
2114 | if (output_bfd != NULL) | |
2115 | insert_undefined (new->name); | |
2116 | } | |
2117 | ||
2118 | /* Insert NAME as undefined in the symbol table. */ | |
2119 | ||
2120 | static void | |
1579bae1 | 2121 | insert_undefined (const char *name) |
fcf0e35b AM |
2122 | { |
2123 | struct bfd_link_hash_entry *h; | |
2124 | ||
b34976b6 | 2125 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE); |
1579bae1 | 2126 | if (h == NULL) |
fcf0e35b AM |
2127 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
2128 | if (h->type == bfd_link_hash_new) | |
2129 | { | |
2130 | h->type = bfd_link_hash_undefined; | |
2131 | h->u.undef.abfd = NULL; | |
2132 | bfd_link_add_undef (link_info.hash, h); | |
2133 | } | |
252b5132 RH |
2134 | } |
2135 | ||
2136 | /* Run through the list of undefineds created above and place them | |
2137 | into the linker hash table as undefined symbols belonging to the | |
08da4cac KH |
2138 | script file. */ |
2139 | ||
252b5132 | 2140 | static void |
1579bae1 | 2141 | lang_place_undefineds (void) |
252b5132 RH |
2142 | { |
2143 | ldlang_undef_chain_list_type *ptr; | |
2144 | ||
1579bae1 AM |
2145 | for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next) |
2146 | insert_undefined (ptr->name); | |
252b5132 RH |
2147 | } |
2148 | ||
0841712e JJ |
2149 | /* Check for all readonly or some readwrite sections. */ |
2150 | ||
2151 | static void | |
6feb9908 AM |
2152 | check_input_sections |
2153 | (lang_statement_union_type *s, | |
2154 | lang_output_section_statement_type *output_section_statement) | |
0841712e JJ |
2155 | { |
2156 | for (; s != (lang_statement_union_type *) NULL; s = s->header.next) | |
2157 | { | |
2158 | switch (s->header.type) | |
2159 | { | |
2160 | case lang_wild_statement_enum: | |
2161 | walk_wild (&s->wild_statement, check_section_callback, | |
2162 | output_section_statement); | |
2163 | if (! output_section_statement->all_input_readonly) | |
2164 | return; | |
2165 | break; | |
2166 | case lang_constructors_statement_enum: | |
2167 | check_input_sections (constructor_list.head, | |
2168 | output_section_statement); | |
2169 | if (! output_section_statement->all_input_readonly) | |
2170 | return; | |
2171 | break; | |
2172 | case lang_group_statement_enum: | |
2173 | check_input_sections (s->group_statement.children.head, | |
2174 | output_section_statement); | |
2175 | if (! output_section_statement->all_input_readonly) | |
2176 | return; | |
2177 | break; | |
2178 | default: | |
2179 | break; | |
2180 | } | |
2181 | } | |
2182 | } | |
2183 | ||
396a2467 | 2184 | /* Open input files and attach to output sections. */ |
08da4cac | 2185 | |
252b5132 | 2186 | static void |
1579bae1 AM |
2187 | map_input_to_output_sections |
2188 | (lang_statement_union_type *s, const char *target, | |
2189 | lang_output_section_statement_type *output_section_statement) | |
252b5132 | 2190 | { |
1579bae1 | 2191 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
2192 | { |
2193 | switch (s->header.type) | |
2194 | { | |
252b5132 | 2195 | case lang_wild_statement_enum: |
b6bf44ba | 2196 | wild (&s->wild_statement, target, output_section_statement); |
abc6ab0a | 2197 | break; |
252b5132 RH |
2198 | case lang_constructors_statement_enum: |
2199 | map_input_to_output_sections (constructor_list.head, | |
2200 | target, | |
2201 | output_section_statement); | |
2202 | break; | |
2203 | case lang_output_section_statement_enum: | |
0841712e JJ |
2204 | if (s->output_section_statement.constraint) |
2205 | { | |
2206 | if (s->output_section_statement.constraint == -1) | |
2207 | break; | |
2208 | s->output_section_statement.all_input_readonly = TRUE; | |
2209 | check_input_sections (s->output_section_statement.children.head, | |
2210 | &s->output_section_statement); | |
2211 | if ((s->output_section_statement.all_input_readonly | |
2212 | && s->output_section_statement.constraint == ONLY_IF_RW) | |
2213 | || (!s->output_section_statement.all_input_readonly | |
2214 | && s->output_section_statement.constraint == ONLY_IF_RO)) | |
2215 | { | |
2216 | s->output_section_statement.constraint = -1; | |
2217 | break; | |
2218 | } | |
2219 | } | |
2220 | ||
252b5132 RH |
2221 | map_input_to_output_sections (s->output_section_statement.children.head, |
2222 | target, | |
2223 | &s->output_section_statement); | |
2224 | break; | |
2225 | case lang_output_statement_enum: | |
2226 | break; | |
2227 | case lang_target_statement_enum: | |
2228 | target = s->target_statement.target; | |
2229 | break; | |
2230 | case lang_group_statement_enum: | |
2231 | map_input_to_output_sections (s->group_statement.children.head, | |
2232 | target, | |
2233 | output_section_statement); | |
2234 | break; | |
384d938f NS |
2235 | case lang_data_statement_enum: |
2236 | /* Make sure that any sections mentioned in the expression | |
2237 | are initialized. */ | |
2238 | exp_init_os (s->data_statement.exp); | |
2239 | /* FALLTHROUGH */ | |
252b5132 RH |
2240 | case lang_fill_statement_enum: |
2241 | case lang_input_section_enum: | |
2242 | case lang_object_symbols_statement_enum: | |
252b5132 RH |
2243 | case lang_reloc_statement_enum: |
2244 | case lang_padding_statement_enum: | |
2245 | case lang_input_statement_enum: | |
2246 | if (output_section_statement != NULL | |
2247 | && output_section_statement->bfd_section == NULL) | |
2248 | init_os (output_section_statement); | |
2249 | break; | |
2250 | case lang_assignment_statement_enum: | |
2251 | if (output_section_statement != NULL | |
2252 | && output_section_statement->bfd_section == NULL) | |
2253 | init_os (output_section_statement); | |
2254 | ||
2255 | /* Make sure that any sections mentioned in the assignment | |
08da4cac | 2256 | are initialized. */ |
252b5132 RH |
2257 | exp_init_os (s->assignment_statement.exp); |
2258 | break; | |
2259 | case lang_afile_asection_pair_statement_enum: | |
2260 | FAIL (); | |
2261 | break; | |
2262 | case lang_address_statement_enum: | |
08da4cac | 2263 | /* Mark the specified section with the supplied address. */ |
252b5132 RH |
2264 | { |
2265 | lang_output_section_statement_type *os = | |
2266 | lang_output_section_statement_lookup | |
2267 | (s->address_statement.section_name); | |
2268 | ||
2269 | if (os->bfd_section == NULL) | |
2270 | init_os (os); | |
2271 | os->addr_tree = s->address_statement.address; | |
2272 | } | |
2273 | break; | |
2274 | } | |
2275 | } | |
2276 | } | |
2277 | ||
4bd5a393 AM |
2278 | /* An output section might have been removed after its statement was |
2279 | added. For example, ldemul_before_allocation can remove dynamic | |
2280 | sections if they turn out to be not needed. Clean them up here. */ | |
2281 | ||
2282 | static void | |
1579bae1 | 2283 | strip_excluded_output_sections (void) |
4bd5a393 AM |
2284 | { |
2285 | lang_statement_union_type *u; | |
2286 | ||
2287 | for (u = lang_output_section_statement.head; | |
2288 | u != NULL; | |
2289 | u = u->output_section_statement.next) | |
2290 | { | |
2291 | lang_output_section_statement_type *os; | |
2292 | asection *s; | |
2293 | ||
2294 | os = &u->output_section_statement; | |
0841712e JJ |
2295 | if (os->constraint == -1) |
2296 | continue; | |
4bd5a393 AM |
2297 | s = os->bfd_section; |
2298 | if (s != NULL && (s->flags & SEC_EXCLUDE) != 0) | |
2299 | { | |
2300 | asection **p; | |
2301 | ||
2302 | os->bfd_section = NULL; | |
2303 | ||
2304 | for (p = &output_bfd->sections; *p; p = &(*p)->next) | |
2305 | if (*p == s) | |
2306 | { | |
2307 | bfd_section_list_remove (output_bfd, p); | |
2308 | output_bfd->section_count--; | |
2309 | break; | |
2310 | } | |
2311 | } | |
2312 | } | |
2313 | } | |
2314 | ||
252b5132 | 2315 | static void |
1579bae1 AM |
2316 | print_output_section_statement |
2317 | (lang_output_section_statement_type *output_section_statement) | |
252b5132 RH |
2318 | { |
2319 | asection *section = output_section_statement->bfd_section; | |
2320 | int len; | |
2321 | ||
2322 | if (output_section_statement != abs_output_section) | |
2323 | { | |
2324 | minfo ("\n%s", output_section_statement->name); | |
2325 | ||
2326 | if (section != NULL) | |
2327 | { | |
2328 | print_dot = section->vma; | |
2329 | ||
2330 | len = strlen (output_section_statement->name); | |
2331 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2332 | { | |
2333 | print_nl (); | |
2334 | len = 0; | |
2335 | } | |
2336 | while (len < SECTION_NAME_MAP_LENGTH) | |
2337 | { | |
2338 | print_space (); | |
2339 | ++len; | |
2340 | } | |
2341 | ||
2342 | minfo ("0x%V %W", section->vma, section->_raw_size); | |
2343 | ||
2344 | if (output_section_statement->load_base != NULL) | |
2345 | { | |
2346 | bfd_vma addr; | |
2347 | ||
2348 | addr = exp_get_abs_int (output_section_statement->load_base, 0, | |
2349 | "load base", lang_final_phase_enum); | |
2350 | minfo (_(" load address 0x%V"), addr); | |
2351 | } | |
2352 | } | |
2353 | ||
2354 | print_nl (); | |
2355 | } | |
2356 | ||
2357 | print_statement_list (output_section_statement->children.head, | |
2358 | output_section_statement); | |
2359 | } | |
2360 | ||
2361 | static void | |
1579bae1 AM |
2362 | print_assignment (lang_assignment_statement_type *assignment, |
2363 | lang_output_section_statement_type *output_section) | |
252b5132 RH |
2364 | { |
2365 | int i; | |
2366 | etree_value_type result; | |
2367 | ||
2368 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2369 | print_space (); | |
2370 | ||
2371 | result = exp_fold_tree (assignment->exp->assign.src, output_section, | |
2372 | lang_final_phase_enum, print_dot, &print_dot); | |
2373 | if (result.valid_p) | |
7b17f854 RS |
2374 | { |
2375 | const char *dst; | |
2376 | bfd_vma value; | |
2377 | ||
2378 | value = result.value + result.section->bfd_section->vma; | |
2379 | dst = assignment->exp->assign.dst; | |
2380 | ||
2381 | minfo ("0x%V", value); | |
2382 | if (dst[0] == '.' && dst[1] == 0) | |
2383 | print_dot = value; | |
2384 | } | |
252b5132 RH |
2385 | else |
2386 | { | |
2387 | minfo ("*undef* "); | |
2388 | #ifdef BFD64 | |
2389 | minfo (" "); | |
2390 | #endif | |
2391 | } | |
2392 | ||
2393 | minfo (" "); | |
2394 | ||
2395 | exp_print_tree (assignment->exp); | |
2396 | ||
2397 | print_nl (); | |
2398 | } | |
2399 | ||
2400 | static void | |
1579bae1 | 2401 | print_input_statement (lang_input_statement_type *statm) |
252b5132 | 2402 | { |
1579bae1 | 2403 | if (statm->filename != NULL) |
252b5132 RH |
2404 | { |
2405 | fprintf (config.map_file, "LOAD %s\n", statm->filename); | |
2406 | } | |
2407 | } | |
2408 | ||
2409 | /* Print all symbols defined in a particular section. This is called | |
35835446 | 2410 | via bfd_link_hash_traverse, or by print_all_symbols. */ |
252b5132 | 2411 | |
b34976b6 | 2412 | static bfd_boolean |
1579bae1 | 2413 | print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr) |
252b5132 | 2414 | { |
1579bae1 | 2415 | asection *sec = ptr; |
252b5132 RH |
2416 | |
2417 | if ((hash_entry->type == bfd_link_hash_defined | |
2418 | || hash_entry->type == bfd_link_hash_defweak) | |
2419 | && sec == hash_entry->u.def.section) | |
2420 | { | |
2421 | int i; | |
2422 | ||
2423 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2424 | print_space (); | |
2425 | minfo ("0x%V ", | |
2426 | (hash_entry->u.def.value | |
2427 | + hash_entry->u.def.section->output_offset | |
2428 | + hash_entry->u.def.section->output_section->vma)); | |
2429 | ||
2430 | minfo (" %T\n", hash_entry->root.string); | |
2431 | } | |
2432 | ||
b34976b6 | 2433 | return TRUE; |
252b5132 RH |
2434 | } |
2435 | ||
35835446 JR |
2436 | static void |
2437 | print_all_symbols (sec) | |
2438 | asection *sec; | |
2439 | { | |
2440 | struct fat_user_section_struct *ud = get_userdata (sec); | |
2441 | struct map_symbol_def *def; | |
2442 | ||
2443 | *ud->map_symbol_def_tail = 0; | |
2444 | for (def = ud->map_symbol_def_head; def; def = def->next) | |
2445 | print_one_symbol (def->entry, sec); | |
2446 | } | |
2447 | ||
252b5132 RH |
2448 | /* Print information about an input section to the map file. */ |
2449 | ||
2450 | static void | |
1579bae1 | 2451 | print_input_section (lang_input_section_type *in) |
252b5132 RH |
2452 | { |
2453 | asection *i = in->section; | |
2454 | bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; | |
e5caa5e0 AM |
2455 | |
2456 | init_opb (); | |
252b5132 RH |
2457 | if (size != 0) |
2458 | { | |
57ceae94 AM |
2459 | int len; |
2460 | bfd_vma addr; | |
252b5132 | 2461 | |
57ceae94 | 2462 | print_space (); |
252b5132 RH |
2463 | minfo ("%s", i->name); |
2464 | ||
57ceae94 AM |
2465 | len = 1 + strlen (i->name); |
2466 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2467 | { | |
2468 | print_nl (); | |
2469 | len = 0; | |
2470 | } | |
2471 | while (len < SECTION_NAME_MAP_LENGTH) | |
252b5132 | 2472 | { |
57ceae94 AM |
2473 | print_space (); |
2474 | ++len; | |
2475 | } | |
252b5132 | 2476 | |
57ceae94 AM |
2477 | if (i->output_section != NULL && (i->flags & SEC_EXCLUDE) == 0) |
2478 | addr = i->output_section->vma + i->output_offset; | |
2479 | else | |
2480 | { | |
2481 | addr = print_dot; | |
2482 | size = 0; | |
2483 | } | |
252b5132 | 2484 | |
57ceae94 | 2485 | minfo ("0x%V %W %B\n", addr, TO_ADDR (size), i->owner); |
252b5132 | 2486 | |
57ceae94 AM |
2487 | if (size != i->_raw_size) |
2488 | { | |
2489 | len = SECTION_NAME_MAP_LENGTH + 3; | |
252b5132 | 2490 | #ifdef BFD64 |
57ceae94 | 2491 | len += 16; |
252b5132 | 2492 | #else |
57ceae94 | 2493 | len += 8; |
252b5132 | 2494 | #endif |
57ceae94 AM |
2495 | while (len > 0) |
2496 | { | |
2497 | print_space (); | |
2498 | --len; | |
252b5132 RH |
2499 | } |
2500 | ||
57ceae94 AM |
2501 | minfo (_("%W (size before relaxing)\n"), i->_raw_size); |
2502 | } | |
2503 | ||
2504 | if (i->output_section != NULL && (i->flags & SEC_EXCLUDE) == 0) | |
2505 | { | |
35835446 JR |
2506 | if (command_line.reduce_memory_overheads) |
2507 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, i); | |
2508 | else | |
2509 | print_all_symbols (i); | |
252b5132 | 2510 | |
57ceae94 | 2511 | print_dot = addr + TO_ADDR (size); |
252b5132 RH |
2512 | } |
2513 | } | |
2514 | } | |
2515 | ||
2516 | static void | |
1579bae1 | 2517 | print_fill_statement (lang_fill_statement_type *fill) |
252b5132 | 2518 | { |
2c382fb6 AM |
2519 | size_t size; |
2520 | unsigned char *p; | |
2521 | fputs (" FILL mask 0x", config.map_file); | |
2522 | for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--) | |
2523 | fprintf (config.map_file, "%02x", *p); | |
2524 | fputs ("\n", config.map_file); | |
252b5132 RH |
2525 | } |
2526 | ||
2527 | static void | |
1579bae1 | 2528 | print_data_statement (lang_data_statement_type *data) |
252b5132 RH |
2529 | { |
2530 | int i; | |
2531 | bfd_vma addr; | |
2532 | bfd_size_type size; | |
2533 | const char *name; | |
2534 | ||
e5caa5e0 | 2535 | init_opb (); |
252b5132 RH |
2536 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
2537 | print_space (); | |
2538 | ||
2539 | addr = data->output_vma; | |
2540 | if (data->output_section != NULL) | |
2541 | addr += data->output_section->vma; | |
2542 | ||
2543 | switch (data->type) | |
2544 | { | |
2545 | default: | |
2546 | abort (); | |
2547 | case BYTE: | |
2548 | size = BYTE_SIZE; | |
2549 | name = "BYTE"; | |
2550 | break; | |
2551 | case SHORT: | |
2552 | size = SHORT_SIZE; | |
2553 | name = "SHORT"; | |
2554 | break; | |
2555 | case LONG: | |
2556 | size = LONG_SIZE; | |
2557 | name = "LONG"; | |
2558 | break; | |
2559 | case QUAD: | |
2560 | size = QUAD_SIZE; | |
2561 | name = "QUAD"; | |
2562 | break; | |
2563 | case SQUAD: | |
2564 | size = QUAD_SIZE; | |
2565 | name = "SQUAD"; | |
2566 | break; | |
2567 | } | |
2568 | ||
2569 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); | |
2570 | ||
2571 | if (data->exp->type.node_class != etree_value) | |
2572 | { | |
2573 | print_space (); | |
2574 | exp_print_tree (data->exp); | |
2575 | } | |
2576 | ||
2577 | print_nl (); | |
2578 | ||
e5caa5e0 | 2579 | print_dot = addr + TO_ADDR (size); |
252b5132 RH |
2580 | } |
2581 | ||
2582 | /* Print an address statement. These are generated by options like | |
2583 | -Ttext. */ | |
2584 | ||
2585 | static void | |
1579bae1 | 2586 | print_address_statement (lang_address_statement_type *address) |
252b5132 RH |
2587 | { |
2588 | minfo (_("Address of section %s set to "), address->section_name); | |
2589 | exp_print_tree (address->address); | |
2590 | print_nl (); | |
2591 | } | |
2592 | ||
2593 | /* Print a reloc statement. */ | |
2594 | ||
2595 | static void | |
1579bae1 | 2596 | print_reloc_statement (lang_reloc_statement_type *reloc) |
252b5132 RH |
2597 | { |
2598 | int i; | |
2599 | bfd_vma addr; | |
2600 | bfd_size_type size; | |
2601 | ||
e5caa5e0 | 2602 | init_opb (); |
252b5132 RH |
2603 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
2604 | print_space (); | |
2605 | ||
2606 | addr = reloc->output_vma; | |
2607 | if (reloc->output_section != NULL) | |
2608 | addr += reloc->output_section->vma; | |
2609 | ||
2610 | size = bfd_get_reloc_size (reloc->howto); | |
2611 | ||
2612 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); | |
2613 | ||
2614 | if (reloc->name != NULL) | |
2615 | minfo ("%s+", reloc->name); | |
2616 | else | |
2617 | minfo ("%s+", reloc->section->name); | |
2618 | ||
2619 | exp_print_tree (reloc->addend_exp); | |
2620 | ||
2621 | print_nl (); | |
2622 | ||
e5caa5e0 | 2623 | print_dot = addr + TO_ADDR (size); |
5f992e62 | 2624 | } |
252b5132 RH |
2625 | |
2626 | static void | |
1579bae1 | 2627 | print_padding_statement (lang_padding_statement_type *s) |
252b5132 RH |
2628 | { |
2629 | int len; | |
2630 | bfd_vma addr; | |
2631 | ||
e5caa5e0 | 2632 | init_opb (); |
252b5132 RH |
2633 | minfo (" *fill*"); |
2634 | ||
2635 | len = sizeof " *fill*" - 1; | |
2636 | while (len < SECTION_NAME_MAP_LENGTH) | |
2637 | { | |
2638 | print_space (); | |
2639 | ++len; | |
2640 | } | |
2641 | ||
2642 | addr = s->output_offset; | |
2643 | if (s->output_section != NULL) | |
2644 | addr += s->output_section->vma; | |
5f9b8920 | 2645 | minfo ("0x%V %W ", addr, (bfd_vma) s->size); |
252b5132 | 2646 | |
2c382fb6 AM |
2647 | if (s->fill->size != 0) |
2648 | { | |
2649 | size_t size; | |
2650 | unsigned char *p; | |
2651 | for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--) | |
2652 | fprintf (config.map_file, "%02x", *p); | |
2653 | } | |
252b5132 RH |
2654 | |
2655 | print_nl (); | |
2656 | ||
e5caa5e0 | 2657 | print_dot = addr + TO_ADDR (s->size); |
252b5132 RH |
2658 | } |
2659 | ||
2660 | static void | |
1579bae1 AM |
2661 | print_wild_statement (lang_wild_statement_type *w, |
2662 | lang_output_section_statement_type *os) | |
252b5132 | 2663 | { |
b6bf44ba AM |
2664 | struct wildcard_list *sec; |
2665 | ||
252b5132 RH |
2666 | print_space (); |
2667 | ||
2668 | if (w->filenames_sorted) | |
2669 | minfo ("SORT("); | |
08da4cac | 2670 | if (w->filename != NULL) |
252b5132 RH |
2671 | minfo ("%s", w->filename); |
2672 | else | |
2673 | minfo ("*"); | |
2674 | if (w->filenames_sorted) | |
2675 | minfo (")"); | |
2676 | ||
2677 | minfo ("("); | |
b6bf44ba AM |
2678 | for (sec = w->section_list; sec; sec = sec->next) |
2679 | { | |
2680 | if (sec->spec.sorted) | |
2681 | minfo ("SORT("); | |
2682 | if (sec->spec.exclude_name_list != NULL) | |
2683 | { | |
2684 | name_list *tmp; | |
34786259 | 2685 | minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name); |
b6bf44ba | 2686 | for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next) |
34786259 AM |
2687 | minfo (" %s", tmp->name); |
2688 | minfo (") "); | |
b6bf44ba AM |
2689 | } |
2690 | if (sec->spec.name != NULL) | |
2691 | minfo ("%s", sec->spec.name); | |
2692 | else | |
2693 | minfo ("*"); | |
2694 | if (sec->spec.sorted) | |
2695 | minfo (")"); | |
34786259 AM |
2696 | if (sec->next) |
2697 | minfo (" "); | |
b6bf44ba | 2698 | } |
252b5132 RH |
2699 | minfo (")"); |
2700 | ||
2701 | print_nl (); | |
2702 | ||
2703 | print_statement_list (w->children.head, os); | |
2704 | } | |
2705 | ||
2706 | /* Print a group statement. */ | |
2707 | ||
2708 | static void | |
1579bae1 AM |
2709 | print_group (lang_group_statement_type *s, |
2710 | lang_output_section_statement_type *os) | |
252b5132 RH |
2711 | { |
2712 | fprintf (config.map_file, "START GROUP\n"); | |
2713 | print_statement_list (s->children.head, os); | |
2714 | fprintf (config.map_file, "END GROUP\n"); | |
2715 | } | |
2716 | ||
2717 | /* Print the list of statements in S. | |
2718 | This can be called for any statement type. */ | |
2719 | ||
2720 | static void | |
1579bae1 AM |
2721 | print_statement_list (lang_statement_union_type *s, |
2722 | lang_output_section_statement_type *os) | |
252b5132 RH |
2723 | { |
2724 | while (s != NULL) | |
2725 | { | |
2726 | print_statement (s, os); | |
bba1a0c0 | 2727 | s = s->header.next; |
252b5132 RH |
2728 | } |
2729 | } | |
2730 | ||
2731 | /* Print the first statement in statement list S. | |
2732 | This can be called for any statement type. */ | |
2733 | ||
2734 | static void | |
1579bae1 AM |
2735 | print_statement (lang_statement_union_type *s, |
2736 | lang_output_section_statement_type *os) | |
252b5132 RH |
2737 | { |
2738 | switch (s->header.type) | |
2739 | { | |
2740 | default: | |
2741 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
2742 | FAIL (); | |
2743 | break; | |
2744 | case lang_constructors_statement_enum: | |
2745 | if (constructor_list.head != NULL) | |
2746 | { | |
2747 | if (constructors_sorted) | |
2748 | minfo (" SORT (CONSTRUCTORS)\n"); | |
2749 | else | |
2750 | minfo (" CONSTRUCTORS\n"); | |
2751 | print_statement_list (constructor_list.head, os); | |
2752 | } | |
2753 | break; | |
2754 | case lang_wild_statement_enum: | |
2755 | print_wild_statement (&s->wild_statement, os); | |
2756 | break; | |
2757 | case lang_address_statement_enum: | |
2758 | print_address_statement (&s->address_statement); | |
2759 | break; | |
2760 | case lang_object_symbols_statement_enum: | |
2761 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
2762 | break; | |
2763 | case lang_fill_statement_enum: | |
2764 | print_fill_statement (&s->fill_statement); | |
2765 | break; | |
2766 | case lang_data_statement_enum: | |
2767 | print_data_statement (&s->data_statement); | |
2768 | break; | |
2769 | case lang_reloc_statement_enum: | |
2770 | print_reloc_statement (&s->reloc_statement); | |
2771 | break; | |
2772 | case lang_input_section_enum: | |
2773 | print_input_section (&s->input_section); | |
2774 | break; | |
2775 | case lang_padding_statement_enum: | |
2776 | print_padding_statement (&s->padding_statement); | |
2777 | break; | |
2778 | case lang_output_section_statement_enum: | |
2779 | print_output_section_statement (&s->output_section_statement); | |
2780 | break; | |
2781 | case lang_assignment_statement_enum: | |
2782 | print_assignment (&s->assignment_statement, os); | |
2783 | break; | |
2784 | case lang_target_statement_enum: | |
2785 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
2786 | break; | |
2787 | case lang_output_statement_enum: | |
2788 | minfo ("OUTPUT(%s", s->output_statement.name); | |
2789 | if (output_target != NULL) | |
2790 | minfo (" %s", output_target); | |
2791 | minfo (")\n"); | |
2792 | break; | |
2793 | case lang_input_statement_enum: | |
2794 | print_input_statement (&s->input_statement); | |
2795 | break; | |
2796 | case lang_group_statement_enum: | |
2797 | print_group (&s->group_statement, os); | |
2798 | break; | |
2799 | case lang_afile_asection_pair_statement_enum: | |
2800 | FAIL (); | |
2801 | break; | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | static void | |
1579bae1 | 2806 | print_statements (void) |
252b5132 RH |
2807 | { |
2808 | print_statement_list (statement_list.head, abs_output_section); | |
2809 | } | |
2810 | ||
2811 | /* Print the first N statements in statement list S to STDERR. | |
2812 | If N == 0, nothing is printed. | |
2813 | If N < 0, the entire list is printed. | |
2814 | Intended to be called from GDB. */ | |
2815 | ||
2816 | void | |
1579bae1 | 2817 | dprint_statement (lang_statement_union_type *s, int n) |
252b5132 RH |
2818 | { |
2819 | FILE *map_save = config.map_file; | |
2820 | ||
2821 | config.map_file = stderr; | |
2822 | ||
2823 | if (n < 0) | |
2824 | print_statement_list (s, abs_output_section); | |
2825 | else | |
2826 | { | |
2827 | while (s && --n >= 0) | |
2828 | { | |
2829 | print_statement (s, abs_output_section); | |
bba1a0c0 | 2830 | s = s->header.next; |
252b5132 RH |
2831 | } |
2832 | } | |
2833 | ||
2834 | config.map_file = map_save; | |
2835 | } | |
2836 | ||
b3327aad | 2837 | static void |
1579bae1 AM |
2838 | insert_pad (lang_statement_union_type **ptr, |
2839 | fill_type *fill, | |
2840 | unsigned int alignment_needed, | |
2841 | asection *output_section, | |
2842 | bfd_vma dot) | |
252b5132 | 2843 | { |
2c382fb6 | 2844 | static fill_type zero_fill = { 1, { 0 } }; |
b3327aad | 2845 | lang_statement_union_type *pad; |
b3327aad | 2846 | |
c0c330a7 | 2847 | pad = ((lang_statement_union_type *) |
2af02257 | 2848 | ((char *) ptr - offsetof (lang_statement_union_type, header.next))); |
b3327aad | 2849 | if (ptr != &statement_list.head |
2af02257 | 2850 | && pad->header.type == lang_padding_statement_enum |
b3327aad | 2851 | && pad->padding_statement.output_section == output_section) |
252b5132 | 2852 | { |
b3327aad AM |
2853 | /* Use the existing pad statement. The above test on output |
2854 | section is probably redundant, but it doesn't hurt to check. */ | |
252b5132 | 2855 | } |
b3327aad | 2856 | else |
252b5132 | 2857 | { |
b3327aad | 2858 | /* Make a new padding statement, linked into existing chain. */ |
1579bae1 | 2859 | pad = stat_alloc (sizeof (lang_padding_statement_type)); |
b3327aad AM |
2860 | pad->header.next = *ptr; |
2861 | *ptr = pad; | |
2862 | pad->header.type = lang_padding_statement_enum; | |
2863 | pad->padding_statement.output_section = output_section; | |
1579bae1 | 2864 | if (fill == NULL) |
2c382fb6 | 2865 | fill = &zero_fill; |
b3327aad | 2866 | pad->padding_statement.fill = fill; |
252b5132 | 2867 | } |
b3327aad AM |
2868 | pad->padding_statement.output_offset = dot - output_section->vma; |
2869 | pad->padding_statement.size = alignment_needed; | |
2870 | output_section->_raw_size += alignment_needed; | |
252b5132 RH |
2871 | } |
2872 | ||
08da4cac KH |
2873 | /* Work out how much this section will move the dot point. */ |
2874 | ||
252b5132 | 2875 | static bfd_vma |
6feb9908 AM |
2876 | size_input_section |
2877 | (lang_statement_union_type **this_ptr, | |
2878 | lang_output_section_statement_type *output_section_statement, | |
2879 | fill_type *fill, | |
2880 | bfd_vma dot) | |
252b5132 RH |
2881 | { |
2882 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
2883 | asection *i = is->section; | |
2884 | ||
57ceae94 | 2885 | if (!is->ifile->just_syms_flag && (i->flags & SEC_EXCLUDE) == 0) |
252b5132 | 2886 | { |
b3327aad AM |
2887 | unsigned int alignment_needed; |
2888 | asection *o; | |
2889 | ||
2890 | /* Align this section first to the input sections requirement, | |
2891 | then to the output section's requirement. If this alignment | |
2892 | is greater than any seen before, then record it too. Perform | |
2893 | the alignment by inserting a magic 'padding' statement. */ | |
2894 | ||
252b5132 | 2895 | if (output_section_statement->subsection_alignment != -1) |
b3327aad AM |
2896 | i->alignment_power = output_section_statement->subsection_alignment; |
2897 | ||
2898 | o = output_section_statement->bfd_section; | |
2899 | if (o->alignment_power < i->alignment_power) | |
2900 | o->alignment_power = i->alignment_power; | |
252b5132 | 2901 | |
b3327aad AM |
2902 | alignment_needed = align_power (dot, i->alignment_power) - dot; |
2903 | ||
2904 | if (alignment_needed != 0) | |
2905 | { | |
e5caa5e0 | 2906 | insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot); |
b3327aad AM |
2907 | dot += alignment_needed; |
2908 | } | |
252b5132 | 2909 | |
08da4cac | 2910 | /* Remember where in the output section this input section goes. */ |
252b5132 | 2911 | |
b3327aad | 2912 | i->output_offset = dot - o->vma; |
252b5132 | 2913 | |
08da4cac | 2914 | /* Mark how big the output section must be to contain this now. */ |
252b5132 | 2915 | if (i->_cooked_size != 0) |
e5caa5e0 | 2916 | dot += TO_ADDR (i->_cooked_size); |
252b5132 | 2917 | else |
e5caa5e0 AM |
2918 | dot += TO_ADDR (i->_raw_size); |
2919 | o->_raw_size = TO_SIZE (dot - o->vma); | |
252b5132 RH |
2920 | } |
2921 | else | |
2922 | { | |
2923 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; | |
2924 | } | |
2925 | ||
2926 | return dot; | |
2927 | } | |
2928 | ||
33275c22 | 2929 | #define IGNORE_SECTION(bfd, s) \ |
6feb9908 AM |
2930 | (((s->flags & SEC_THREAD_LOCAL) != 0 \ |
2931 | ? (s->flags & (SEC_LOAD | SEC_NEVER_LOAD)) != SEC_LOAD \ | |
2932 | : (s->flags & (SEC_ALLOC | SEC_NEVER_LOAD)) != SEC_ALLOC) \ | |
33275c22 | 2933 | || bfd_section_size (bfd, s) == 0) |
d1778b88 | 2934 | |
252b5132 RH |
2935 | /* Check to see if any allocated sections overlap with other allocated |
2936 | sections. This can happen when the linker script specifically specifies | |
2937 | the output section addresses of the two sections. */ | |
08da4cac | 2938 | |
252b5132 | 2939 | static void |
1579bae1 | 2940 | lang_check_section_addresses (void) |
252b5132 | 2941 | { |
08da4cac | 2942 | asection *s; |
252b5132 RH |
2943 | |
2944 | /* Scan all sections in the output list. */ | |
2945 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
33275c22 | 2946 | { |
08da4cac | 2947 | asection *os; |
5f992e62 | 2948 | |
33275c22 NC |
2949 | /* Ignore sections which are not loaded or which have no contents. */ |
2950 | if (IGNORE_SECTION (output_bfd, s)) | |
2951 | continue; | |
5f992e62 | 2952 | |
33275c22 NC |
2953 | /* Once we reach section 's' stop our seach. This prevents two |
2954 | warning messages from being produced, one for 'section A overlaps | |
2955 | section B' and one for 'section B overlaps section A'. */ | |
2956 | for (os = output_bfd->sections; os != s; os = os->next) | |
2957 | { | |
2958 | bfd_vma s_start; | |
2959 | bfd_vma s_end; | |
2960 | bfd_vma os_start; | |
2961 | bfd_vma os_end; | |
5f992e62 | 2962 | |
33275c22 NC |
2963 | /* Only consider loadable sections with real contents. */ |
2964 | if (IGNORE_SECTION (output_bfd, os)) | |
2965 | continue; | |
252b5132 | 2966 | |
33275c22 NC |
2967 | /* We must check the sections' LMA addresses not their |
2968 | VMA addresses because overlay sections can have | |
2969 | overlapping VMAs but they must have distinct LMAs. */ | |
e5caa5e0 | 2970 | s_start = bfd_section_lma (output_bfd, s); |
33275c22 | 2971 | os_start = bfd_section_lma (output_bfd, os); |
e5caa5e0 AM |
2972 | s_end = s_start + TO_ADDR (bfd_section_size (output_bfd, s)) - 1; |
2973 | os_end = os_start + TO_ADDR (bfd_section_size (output_bfd, os)) - 1; | |
5f992e62 | 2974 | |
33275c22 NC |
2975 | /* Look for an overlap. */ |
2976 | if ((s_end < os_start) || (s_start > os_end)) | |
2977 | continue; | |
5f992e62 | 2978 | |
33275c22 | 2979 | einfo ( |
252b5132 | 2980 | _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"), |
33275c22 | 2981 | s->name, s_start, s_end, os->name, os_start, os_end); |
5f992e62 | 2982 | |
33275c22 NC |
2983 | /* Once we have found one overlap for this section, |
2984 | stop looking for others. */ | |
2985 | break; | |
2986 | } | |
2987 | } | |
252b5132 RH |
2988 | } |
2989 | ||
562d3460 TW |
2990 | /* Make sure the new address is within the region. We explicitly permit the |
2991 | current address to be at the exact end of the region when the address is | |
2992 | non-zero, in case the region is at the end of addressable memory and the | |
5f992e62 | 2993 | calculation wraps around. */ |
562d3460 TW |
2994 | |
2995 | static void | |
1579bae1 | 2996 | os_region_check (lang_output_section_statement_type *os, |
6bdafbeb | 2997 | lang_memory_region_type *region, |
1579bae1 AM |
2998 | etree_type *tree, |
2999 | bfd_vma base) | |
562d3460 TW |
3000 | { |
3001 | if ((region->current < region->origin | |
3002 | || (region->current - region->origin > region->length)) | |
3003 | && ((region->current != region->origin + region->length) | |
b7a26f91 | 3004 | || base == 0)) |
562d3460 | 3005 | { |
1579bae1 | 3006 | if (tree != NULL) |
b7a26f91 | 3007 | { |
6feb9908 AM |
3008 | einfo (_("%X%P: address 0x%v of %B section %s" |
3009 | " is not within region %s\n"), | |
b7a26f91 KH |
3010 | region->current, |
3011 | os->bfd_section->owner, | |
3012 | os->bfd_section->name, | |
3013 | region->name); | |
3014 | } | |
562d3460 | 3015 | else |
b7a26f91 KH |
3016 | { |
3017 | einfo (_("%X%P: region %s is full (%B section %s)\n"), | |
3018 | region->name, | |
3019 | os->bfd_section->owner, | |
3020 | os->bfd_section->name); | |
3021 | } | |
562d3460 TW |
3022 | /* Reset the region pointer. */ |
3023 | region->current = region->origin; | |
3024 | } | |
3025 | } | |
3026 | ||
252b5132 RH |
3027 | /* Set the sizes for all the output sections. */ |
3028 | ||
2d20f7bf | 3029 | static bfd_vma |
1579bae1 AM |
3030 | lang_size_sections_1 |
3031 | (lang_statement_union_type *s, | |
3032 | lang_output_section_statement_type *output_section_statement, | |
3033 | lang_statement_union_type **prev, | |
3034 | fill_type *fill, | |
3035 | bfd_vma dot, | |
3036 | bfd_boolean *relax, | |
3037 | bfd_boolean check_regions) | |
252b5132 RH |
3038 | { |
3039 | /* Size up the sections from their constituent parts. */ | |
1579bae1 | 3040 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
3041 | { |
3042 | switch (s->header.type) | |
3043 | { | |
3044 | case lang_output_section_statement_enum: | |
3045 | { | |
3046 | bfd_vma after; | |
d1778b88 | 3047 | lang_output_section_statement_type *os; |
252b5132 | 3048 | |
d1778b88 | 3049 | os = &s->output_section_statement; |
252b5132 RH |
3050 | if (os->bfd_section == NULL) |
3051 | /* This section was never actually created. */ | |
3052 | break; | |
3053 | ||
3054 | /* If this is a COFF shared library section, use the size and | |
3055 | address from the input section. FIXME: This is COFF | |
3056 | specific; it would be cleaner if there were some other way | |
3057 | to do this, but nothing simple comes to mind. */ | |
3058 | if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
3059 | { | |
08da4cac | 3060 | asection *input; |
252b5132 RH |
3061 | |
3062 | if (os->children.head == NULL | |
bba1a0c0 | 3063 | || os->children.head->header.next != NULL |
6feb9908 AM |
3064 | || (os->children.head->header.type |
3065 | != lang_input_section_enum)) | |
3066 | einfo (_("%P%X: Internal error on COFF shared library" | |
3067 | " section %s\n"), os->name); | |
252b5132 RH |
3068 | |
3069 | input = os->children.head->input_section.section; | |
3070 | bfd_set_section_vma (os->bfd_section->owner, | |
3071 | os->bfd_section, | |
3072 | bfd_section_vma (input->owner, input)); | |
3073 | os->bfd_section->_raw_size = input->_raw_size; | |
3074 | break; | |
3075 | } | |
3076 | ||
3077 | if (bfd_is_abs_section (os->bfd_section)) | |
3078 | { | |
3079 | /* No matter what happens, an abs section starts at zero. */ | |
3080 | ASSERT (os->bfd_section->vma == 0); | |
3081 | } | |
3082 | else | |
3083 | { | |
1579bae1 | 3084 | if (os->addr_tree == NULL) |
252b5132 RH |
3085 | { |
3086 | /* No address specified for this section, get one | |
3087 | from the region specification. */ | |
1579bae1 | 3088 | if (os->region == NULL |
6feb9908 | 3089 | || ((os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)) |
252b5132 | 3090 | && os->region->name[0] == '*' |
6feb9908 AM |
3091 | && strcmp (os->region->name, |
3092 | DEFAULT_MEMORY_REGION) == 0)) | |
252b5132 RH |
3093 | { |
3094 | os->region = lang_memory_default (os->bfd_section); | |
3095 | } | |
3096 | ||
3097 | /* If a loadable section is using the default memory | |
3098 | region, and some non default memory regions were | |
66184979 | 3099 | defined, issue an error message. */ |
a7f18fb3 | 3100 | if (!IGNORE_SECTION (output_bfd, os->bfd_section) |
1049f94e | 3101 | && ! link_info.relocatable |
cf888e70 | 3102 | && check_regions |
6feb9908 AM |
3103 | && strcmp (os->region->name, |
3104 | DEFAULT_MEMORY_REGION) == 0 | |
252b5132 | 3105 | && lang_memory_region_list != NULL |
d1778b88 | 3106 | && (strcmp (lang_memory_region_list->name, |
a747ee4d | 3107 | DEFAULT_MEMORY_REGION) != 0 |
252b5132 | 3108 | || lang_memory_region_list->next != NULL)) |
66184979 NC |
3109 | { |
3110 | /* By default this is an error rather than just a | |
3111 | warning because if we allocate the section to the | |
3112 | default memory region we can end up creating an | |
07f3b6ad KH |
3113 | excessively large binary, or even seg faulting when |
3114 | attempting to perform a negative seek. See | |
6feb9908 | 3115 | sources.redhat.com/ml/binutils/2003-04/msg00423.html |
66184979 NC |
3116 | for an example of this. This behaviour can be |
3117 | overridden by the using the --no-check-sections | |
3118 | switch. */ | |
3119 | if (command_line.check_section_addresses) | |
6feb9908 AM |
3120 | einfo (_("%P%F: error: no memory region specified" |
3121 | " for loadable section `%s'\n"), | |
66184979 NC |
3122 | bfd_get_section_name (output_bfd, |
3123 | os->bfd_section)); | |
3124 | else | |
6feb9908 AM |
3125 | einfo (_("%P: warning: no memory region specified" |
3126 | " for loadable section `%s'\n"), | |
66184979 NC |
3127 | bfd_get_section_name (output_bfd, |
3128 | os->bfd_section)); | |
3129 | } | |
252b5132 RH |
3130 | |
3131 | dot = os->region->current; | |
5f992e62 | 3132 | |
252b5132 RH |
3133 | if (os->section_alignment == -1) |
3134 | { | |
3135 | bfd_vma olddot; | |
3136 | ||
3137 | olddot = dot; | |
d1778b88 AM |
3138 | dot = align_power (dot, |
3139 | os->bfd_section->alignment_power); | |
252b5132 RH |
3140 | |
3141 | if (dot != olddot && config.warn_section_align) | |
6feb9908 AM |
3142 | einfo (_("%P: warning: changing start of section" |
3143 | " %s by %u bytes\n"), | |
252b5132 RH |
3144 | os->name, (unsigned int) (dot - olddot)); |
3145 | } | |
3146 | } | |
3147 | else | |
3148 | { | |
3149 | etree_value_type r; | |
3150 | ||
1b493742 | 3151 | os->processed = -1; |
252b5132 RH |
3152 | r = exp_fold_tree (os->addr_tree, |
3153 | abs_output_section, | |
3154 | lang_allocating_phase_enum, | |
3155 | dot, &dot); | |
1b493742 NS |
3156 | os->processed = 0; |
3157 | ||
7c519c12 | 3158 | if (!r.valid_p) |
6feb9908 AM |
3159 | einfo (_("%F%S: non constant or forward reference" |
3160 | " address expression for section %s\n"), | |
7c519c12 AM |
3161 | os->name); |
3162 | ||
252b5132 RH |
3163 | dot = r.value + r.section->bfd_section->vma; |
3164 | } | |
5f992e62 | 3165 | |
252b5132 RH |
3166 | /* The section starts here. |
3167 | First, align to what the section needs. */ | |
3168 | ||
3169 | if (os->section_alignment != -1) | |
3170 | dot = align_power (dot, os->section_alignment); | |
3171 | ||
3172 | bfd_set_section_vma (0, os->bfd_section, dot); | |
5f992e62 | 3173 | |
252b5132 RH |
3174 | os->bfd_section->output_offset = 0; |
3175 | } | |
3176 | ||
2d20f7bf | 3177 | lang_size_sections_1 (os->children.head, os, &os->children.head, |
cf888e70 | 3178 | os->fill, dot, relax, check_regions); |
5f992e62 | 3179 | |
08da4cac KH |
3180 | /* Put the section within the requested block size, or |
3181 | align at the block boundary. */ | |
e5caa5e0 AM |
3182 | after = ((os->bfd_section->vma |
3183 | + TO_ADDR (os->bfd_section->_raw_size) | |
3184 | + os->block_value - 1) | |
3185 | & - (bfd_vma) os->block_value); | |
252b5132 RH |
3186 | |
3187 | if (bfd_is_abs_section (os->bfd_section)) | |
3188 | ASSERT (after == os->bfd_section->vma); | |
3189 | else | |
e5caa5e0 AM |
3190 | os->bfd_section->_raw_size |
3191 | = TO_SIZE (after - os->bfd_section->vma); | |
9f88b410 | 3192 | |
e5caec89 NS |
3193 | dot = os->bfd_section->vma; |
3194 | /* .tbss sections effectively have zero size. */ | |
3195 | if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 | |
3196 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0 | |
3197 | || link_info.relocatable) | |
3198 | dot += TO_ADDR (os->bfd_section->_raw_size); | |
3199 | ||
1b493742 | 3200 | os->processed = 1; |
252b5132 | 3201 | |
9f88b410 RS |
3202 | if (os->update_dot_tree != 0) |
3203 | exp_fold_tree (os->update_dot_tree, abs_output_section, | |
3204 | lang_allocating_phase_enum, dot, &dot); | |
3205 | ||
252b5132 RH |
3206 | /* Update dot in the region ? |
3207 | We only do this if the section is going to be allocated, | |
3208 | since unallocated sections do not contribute to the region's | |
13392b77 | 3209 | overall size in memory. |
5f992e62 | 3210 | |
cce4c4c5 NC |
3211 | If the SEC_NEVER_LOAD bit is not set, it will affect the |
3212 | addresses of sections after it. We have to update | |
3213 | dot. */ | |
1579bae1 | 3214 | if (os->region != NULL |
6feb9908 AM |
3215 | && ((os->bfd_section->flags & SEC_NEVER_LOAD) == 0 |
3216 | || (os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)))) | |
252b5132 RH |
3217 | { |
3218 | os->region->current = dot; | |
5f992e62 | 3219 | |
cf888e70 NC |
3220 | if (check_regions) |
3221 | /* Make sure the new address is within the region. */ | |
3222 | os_region_check (os, os->region, os->addr_tree, | |
3223 | os->bfd_section->vma); | |
08da4cac KH |
3224 | |
3225 | /* If there's no load address specified, use the run | |
3226 | region as the load region. */ | |
3227 | if (os->lma_region == NULL && os->load_base == NULL) | |
3228 | os->lma_region = os->region; | |
3229 | ||
ee3cc2e2 | 3230 | if (os->lma_region != NULL && os->lma_region != os->region) |
08da4cac | 3231 | { |
ee3cc2e2 RS |
3232 | /* Set load_base, which will be handled later. */ |
3233 | os->load_base = exp_intop (os->lma_region->current); | |
3234 | os->lma_region->current += | |
e5caa5e0 | 3235 | TO_ADDR (os->bfd_section->_raw_size); |
cf888e70 NC |
3236 | if (check_regions) |
3237 | os_region_check (os, os->lma_region, NULL, | |
3238 | os->bfd_section->lma); | |
08da4cac | 3239 | } |
252b5132 RH |
3240 | } |
3241 | } | |
3242 | break; | |
3243 | ||
3244 | case lang_constructors_statement_enum: | |
2d20f7bf JJ |
3245 | dot = lang_size_sections_1 (constructor_list.head, |
3246 | output_section_statement, | |
3247 | &s->wild_statement.children.head, | |
cf888e70 | 3248 | fill, dot, relax, check_regions); |
252b5132 RH |
3249 | break; |
3250 | ||
3251 | case lang_data_statement_enum: | |
3252 | { | |
3253 | unsigned int size = 0; | |
3254 | ||
08da4cac KH |
3255 | s->data_statement.output_vma = |
3256 | dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
3257 | s->data_statement.output_section = |
3258 | output_section_statement->bfd_section; | |
3259 | ||
1b493742 NS |
3260 | /* We might refer to provided symbols in the expression, and |
3261 | need to mark them as needed. */ | |
3262 | exp_fold_tree (s->data_statement.exp, abs_output_section, | |
3263 | lang_allocating_phase_enum, dot, &dot); | |
3264 | ||
252b5132 RH |
3265 | switch (s->data_statement.type) |
3266 | { | |
08da4cac KH |
3267 | default: |
3268 | abort (); | |
252b5132 RH |
3269 | case QUAD: |
3270 | case SQUAD: | |
3271 | size = QUAD_SIZE; | |
3272 | break; | |
3273 | case LONG: | |
3274 | size = LONG_SIZE; | |
3275 | break; | |
3276 | case SHORT: | |
3277 | size = SHORT_SIZE; | |
3278 | break; | |
3279 | case BYTE: | |
3280 | size = BYTE_SIZE; | |
3281 | break; | |
3282 | } | |
e5caa5e0 AM |
3283 | if (size < TO_SIZE ((unsigned) 1)) |
3284 | size = TO_SIZE ((unsigned) 1); | |
3285 | dot += TO_ADDR (size); | |
252b5132 RH |
3286 | output_section_statement->bfd_section->_raw_size += size; |
3287 | /* The output section gets contents, and then we inspect for | |
3288 | any flags set in the input script which override any ALLOC. */ | |
3289 | output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; | |
08da4cac KH |
3290 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) |
3291 | { | |
3292 | output_section_statement->bfd_section->flags |= | |
3293 | SEC_ALLOC | SEC_LOAD; | |
3294 | } | |
252b5132 RH |
3295 | } |
3296 | break; | |
3297 | ||
3298 | case lang_reloc_statement_enum: | |
3299 | { | |
3300 | int size; | |
3301 | ||
3302 | s->reloc_statement.output_vma = | |
3303 | dot - output_section_statement->bfd_section->vma; | |
3304 | s->reloc_statement.output_section = | |
3305 | output_section_statement->bfd_section; | |
3306 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
e5caa5e0 | 3307 | dot += TO_ADDR (size); |
252b5132 RH |
3308 | output_section_statement->bfd_section->_raw_size += size; |
3309 | } | |
3310 | break; | |
5f992e62 | 3311 | |
252b5132 RH |
3312 | case lang_wild_statement_enum: |
3313 | ||
2d20f7bf JJ |
3314 | dot = lang_size_sections_1 (s->wild_statement.children.head, |
3315 | output_section_statement, | |
3316 | &s->wild_statement.children.head, | |
cf888e70 | 3317 | fill, dot, relax, check_regions); |
252b5132 RH |
3318 | |
3319 | break; | |
3320 | ||
3321 | case lang_object_symbols_statement_enum: | |
3322 | link_info.create_object_symbols_section = | |
3323 | output_section_statement->bfd_section; | |
3324 | break; | |
3325 | case lang_output_statement_enum: | |
3326 | case lang_target_statement_enum: | |
3327 | break; | |
3328 | case lang_input_section_enum: | |
3329 | { | |
3330 | asection *i; | |
3331 | ||
3332 | i = (*prev)->input_section.section; | |
3333 | if (! relax) | |
3334 | { | |
3335 | if (i->_cooked_size == 0) | |
3336 | i->_cooked_size = i->_raw_size; | |
3337 | } | |
3338 | else | |
3339 | { | |
b34976b6 | 3340 | bfd_boolean again; |
252b5132 RH |
3341 | |
3342 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) | |
3343 | einfo (_("%P%F: can't relax section: %E\n")); | |
3344 | if (again) | |
b34976b6 | 3345 | *relax = TRUE; |
252b5132 | 3346 | } |
b3327aad AM |
3347 | dot = size_input_section (prev, output_section_statement, |
3348 | output_section_statement->fill, dot); | |
252b5132 RH |
3349 | } |
3350 | break; | |
3351 | case lang_input_statement_enum: | |
3352 | break; | |
3353 | case lang_fill_statement_enum: | |
08da4cac KH |
3354 | s->fill_statement.output_section = |
3355 | output_section_statement->bfd_section; | |
252b5132 RH |
3356 | |
3357 | fill = s->fill_statement.fill; | |
3358 | break; | |
3359 | case lang_assignment_statement_enum: | |
3360 | { | |
3361 | bfd_vma newdot = dot; | |
3362 | ||
3363 | exp_fold_tree (s->assignment_statement.exp, | |
3364 | output_section_statement, | |
3365 | lang_allocating_phase_enum, | |
3366 | dot, | |
3367 | &newdot); | |
3368 | ||
3369 | if (newdot != dot) | |
3370 | { | |
252b5132 RH |
3371 | if (output_section_statement == abs_output_section) |
3372 | { | |
3373 | /* If we don't have an output section, then just adjust | |
3374 | the default memory address. */ | |
6feb9908 AM |
3375 | lang_memory_region_lookup (DEFAULT_MEMORY_REGION, |
3376 | FALSE)->current = newdot; | |
252b5132 | 3377 | } |
b3327aad | 3378 | else |
252b5132 | 3379 | { |
b3327aad AM |
3380 | /* Insert a pad after this statement. We can't |
3381 | put the pad before when relaxing, in case the | |
3382 | assignment references dot. */ | |
e5caa5e0 | 3383 | insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot), |
b3327aad AM |
3384 | output_section_statement->bfd_section, dot); |
3385 | ||
3386 | /* Don't neuter the pad below when relaxing. */ | |
3387 | s = s->header.next; | |
252b5132 RH |
3388 | } |
3389 | ||
9dfc8ab2 NC |
3390 | /* If dot is advanced, this implies that the section should |
3391 | have space allocated to it, unless the user has explicitly | |
3392 | stated that the section should never be loaded. */ | |
6feb9908 AM |
3393 | if (!(output_section_statement->flags |
3394 | & (SEC_NEVER_LOAD | SEC_ALLOC))) | |
9dfc8ab2 NC |
3395 | output_section_statement->bfd_section->flags |= SEC_ALLOC; |
3396 | ||
252b5132 RH |
3397 | dot = newdot; |
3398 | } | |
3399 | } | |
3400 | break; | |
3401 | ||
3402 | case lang_padding_statement_enum: | |
c0c330a7 AM |
3403 | /* If this is the first time lang_size_sections is called, |
3404 | we won't have any padding statements. If this is the | |
3405 | second or later passes when relaxing, we should allow | |
3406 | padding to shrink. If padding is needed on this pass, it | |
3407 | will be added back in. */ | |
3408 | s->padding_statement.size = 0; | |
6e814ff8 AM |
3409 | |
3410 | /* Make sure output_offset is valid. If relaxation shrinks | |
3411 | the section and this pad isn't needed, it's possible to | |
3412 | have output_offset larger than the final size of the | |
3413 | section. bfd_set_section_contents will complain even for | |
3414 | a pad size of zero. */ | |
3415 | s->padding_statement.output_offset | |
3416 | = dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
3417 | break; |
3418 | ||
3419 | case lang_group_statement_enum: | |
2d20f7bf JJ |
3420 | dot = lang_size_sections_1 (s->group_statement.children.head, |
3421 | output_section_statement, | |
3422 | &s->group_statement.children.head, | |
cf888e70 | 3423 | fill, dot, relax, check_regions); |
252b5132 RH |
3424 | break; |
3425 | ||
3426 | default: | |
3427 | FAIL (); | |
3428 | break; | |
3429 | ||
c0c330a7 | 3430 | /* We can only get here when relaxing is turned on. */ |
252b5132 RH |
3431 | case lang_address_statement_enum: |
3432 | break; | |
3433 | } | |
3434 | prev = &s->header.next; | |
3435 | } | |
3436 | return dot; | |
3437 | } | |
3438 | ||
2d20f7bf | 3439 | bfd_vma |
1579bae1 AM |
3440 | lang_size_sections |
3441 | (lang_statement_union_type *s, | |
3442 | lang_output_section_statement_type *output_section_statement, | |
3443 | lang_statement_union_type **prev, | |
3444 | fill_type *fill, | |
3445 | bfd_vma dot, | |
3446 | bfd_boolean *relax, | |
3447 | bfd_boolean check_regions) | |
2d20f7bf JJ |
3448 | { |
3449 | bfd_vma result; | |
86d3c9a8 | 3450 | asection *o; |
2d20f7bf | 3451 | |
420e579c HPN |
3452 | /* Callers of exp_fold_tree need to increment this. */ |
3453 | lang_statement_iteration++; | |
3454 | ||
2d20f7bf JJ |
3455 | exp_data_seg.phase = exp_dataseg_none; |
3456 | result = lang_size_sections_1 (s, output_section_statement, prev, fill, | |
cf888e70 | 3457 | dot, relax, check_regions); |
8c37241b JJ |
3458 | if (exp_data_seg.phase == exp_dataseg_end_seen |
3459 | && link_info.relro && exp_data_seg.relro_end) | |
3460 | { | |
3461 | /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END pair was seen, try | |
3462 | to put exp_data_seg.relro on a (common) page boundary. */ | |
3463 | ||
3464 | exp_data_seg.phase = exp_dataseg_relro_adjust; | |
3465 | result = lang_size_sections_1 (s, output_section_statement, prev, fill, | |
3466 | dot, relax, check_regions); | |
3467 | link_info.relro_start = exp_data_seg.base; | |
3468 | link_info.relro_end = exp_data_seg.relro_end; | |
3469 | } | |
3470 | else if (exp_data_seg.phase == exp_dataseg_end_seen) | |
2d20f7bf JJ |
3471 | { |
3472 | /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_END pair was seen, check whether | |
3473 | a page could be saved in the data segment. */ | |
3474 | bfd_vma first, last; | |
3475 | ||
3476 | first = -exp_data_seg.base & (exp_data_seg.pagesize - 1); | |
3477 | last = exp_data_seg.end & (exp_data_seg.pagesize - 1); | |
3478 | if (first && last | |
3479 | && ((exp_data_seg.base & ~(exp_data_seg.pagesize - 1)) | |
3480 | != (exp_data_seg.end & ~(exp_data_seg.pagesize - 1))) | |
3481 | && first + last <= exp_data_seg.pagesize) | |
3482 | { | |
3483 | exp_data_seg.phase = exp_dataseg_adjust; | |
1b493742 | 3484 | lang_statement_iteration++; |
2d20f7bf | 3485 | result = lang_size_sections_1 (s, output_section_statement, prev, |
cf888e70 | 3486 | fill, dot, relax, check_regions); |
2d20f7bf JJ |
3487 | } |
3488 | } | |
3489 | ||
86d3c9a8 HPN |
3490 | /* Some backend relaxers want to refer to the output section size. Give |
3491 | them a section size that does not change on the next call while they | |
3492 | relax. We can't set this at top because lang_reset_memory_regions | |
3493 | which is called before we get here, sets _raw_size to 0 on relaxing | |
3494 | rounds. */ | |
3495 | for (o = output_bfd->sections; o != NULL; o = o->next) | |
3496 | o->_cooked_size = o->_raw_size; | |
3497 | ||
2d20f7bf JJ |
3498 | return result; |
3499 | } | |
3500 | ||
420e579c HPN |
3501 | /* Worker function for lang_do_assignments. Recursiveness goes here. */ |
3502 | ||
3503 | static bfd_vma | |
3504 | lang_do_assignments_1 | |
1579bae1 AM |
3505 | (lang_statement_union_type *s, |
3506 | lang_output_section_statement_type *output_section_statement, | |
3507 | fill_type *fill, | |
3508 | bfd_vma dot) | |
252b5132 | 3509 | { |
1579bae1 | 3510 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
3511 | { |
3512 | switch (s->header.type) | |
3513 | { | |
3514 | case lang_constructors_statement_enum: | |
420e579c HPN |
3515 | dot = lang_do_assignments_1 (constructor_list.head, |
3516 | output_section_statement, | |
3517 | fill, | |
3518 | dot); | |
252b5132 RH |
3519 | break; |
3520 | ||
3521 | case lang_output_section_statement_enum: | |
3522 | { | |
d1778b88 | 3523 | lang_output_section_statement_type *os; |
252b5132 | 3524 | |
d1778b88 | 3525 | os = &(s->output_section_statement); |
252b5132 RH |
3526 | if (os->bfd_section != NULL) |
3527 | { | |
3528 | dot = os->bfd_section->vma; | |
4a43e768 | 3529 | lang_do_assignments_1 (os->children.head, os, os->fill, dot); |
3737f867 JJ |
3530 | /* .tbss sections effectively have zero size. */ |
3531 | if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0 | |
3532 | || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0 | |
3533 | || link_info.relocatable) | |
3534 | dot += TO_ADDR (os->bfd_section->_raw_size); | |
252b5132 | 3535 | } |
c13b1b77 | 3536 | if (os->load_base) |
252b5132 RH |
3537 | { |
3538 | /* If nothing has been placed into the output section then | |
4de2d33d | 3539 | it won't have a bfd_section. */ |
5f992e62 | 3540 | if (os->bfd_section) |
252b5132 | 3541 | { |
5f992e62 | 3542 | os->bfd_section->lma |
08da4cac KH |
3543 | = exp_get_abs_int (os->load_base, 0, "load base", |
3544 | lang_final_phase_enum); | |
252b5132 RH |
3545 | } |
3546 | } | |
3547 | } | |
3548 | break; | |
3549 | case lang_wild_statement_enum: | |
3550 | ||
420e579c HPN |
3551 | dot = lang_do_assignments_1 (s->wild_statement.children.head, |
3552 | output_section_statement, | |
3553 | fill, dot); | |
252b5132 RH |
3554 | |
3555 | break; | |
3556 | ||
3557 | case lang_object_symbols_statement_enum: | |
3558 | case lang_output_statement_enum: | |
3559 | case lang_target_statement_enum: | |
3560 | #if 0 | |
3561 | case lang_common_statement_enum: | |
3562 | #endif | |
3563 | break; | |
3564 | case lang_data_statement_enum: | |
3565 | { | |
3566 | etree_value_type value; | |
3567 | ||
3568 | value = exp_fold_tree (s->data_statement.exp, | |
3569 | abs_output_section, | |
3570 | lang_final_phase_enum, dot, &dot); | |
7c519c12 | 3571 | if (!value.valid_p) |
252b5132 | 3572 | einfo (_("%F%P: invalid data statement\n")); |
384d938f NS |
3573 | s->data_statement.value |
3574 | = value.value + value.section->bfd_section->vma; | |
252b5132 | 3575 | } |
b7a26f91 KH |
3576 | { |
3577 | unsigned int size; | |
08da4cac KH |
3578 | switch (s->data_statement.type) |
3579 | { | |
3580 | default: | |
3581 | abort (); | |
3582 | case QUAD: | |
3583 | case SQUAD: | |
3584 | size = QUAD_SIZE; | |
3585 | break; | |
3586 | case LONG: | |
3587 | size = LONG_SIZE; | |
3588 | break; | |
3589 | case SHORT: | |
3590 | size = SHORT_SIZE; | |
3591 | break; | |
3592 | case BYTE: | |
3593 | size = BYTE_SIZE; | |
3594 | break; | |
3595 | } | |
e5caa5e0 AM |
3596 | if (size < TO_SIZE ((unsigned) 1)) |
3597 | size = TO_SIZE ((unsigned) 1); | |
3598 | dot += TO_ADDR (size); | |
08da4cac | 3599 | } |
252b5132 RH |
3600 | break; |
3601 | ||
3602 | case lang_reloc_statement_enum: | |
3603 | { | |
3604 | etree_value_type value; | |
3605 | ||
3606 | value = exp_fold_tree (s->reloc_statement.addend_exp, | |
3607 | abs_output_section, | |
3608 | lang_final_phase_enum, dot, &dot); | |
3609 | s->reloc_statement.addend_value = value.value; | |
7c519c12 | 3610 | if (!value.valid_p) |
252b5132 RH |
3611 | einfo (_("%F%P: invalid reloc statement\n")); |
3612 | } | |
e5caa5e0 | 3613 | dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto)); |
252b5132 RH |
3614 | break; |
3615 | ||
3616 | case lang_input_section_enum: | |
3617 | { | |
3618 | asection *in = s->input_section.section; | |
3619 | ||
57ceae94 AM |
3620 | if ((in->flags & SEC_EXCLUDE) == 0) |
3621 | { | |
3622 | if (in->_cooked_size != 0) | |
3623 | dot += TO_ADDR (in->_cooked_size); | |
3624 | else | |
3625 | dot += TO_ADDR (in->_raw_size); | |
3626 | } | |
252b5132 RH |
3627 | } |
3628 | break; | |
3629 | ||
3630 | case lang_input_statement_enum: | |
3631 | break; | |
3632 | case lang_fill_statement_enum: | |
3633 | fill = s->fill_statement.fill; | |
3634 | break; | |
3635 | case lang_assignment_statement_enum: | |
3636 | { | |
3637 | exp_fold_tree (s->assignment_statement.exp, | |
3638 | output_section_statement, | |
3639 | lang_final_phase_enum, | |
3640 | dot, | |
3641 | &dot); | |
3642 | } | |
3643 | ||
3644 | break; | |
3645 | case lang_padding_statement_enum: | |
e5caa5e0 | 3646 | dot += TO_ADDR (s->padding_statement.size); |
252b5132 RH |
3647 | break; |
3648 | ||
3649 | case lang_group_statement_enum: | |
420e579c HPN |
3650 | dot = lang_do_assignments_1 (s->group_statement.children.head, |
3651 | output_section_statement, | |
3652 | fill, dot); | |
252b5132 RH |
3653 | |
3654 | break; | |
3655 | ||
3656 | default: | |
3657 | FAIL (); | |
3658 | break; | |
3659 | case lang_address_statement_enum: | |
3660 | break; | |
3661 | } | |
3662 | ||
3663 | } | |
3664 | return dot; | |
3665 | } | |
3666 | ||
f2241121 | 3667 | void |
6feb9908 AM |
3668 | lang_do_assignments |
3669 | (lang_statement_union_type *s, | |
3670 | lang_output_section_statement_type *output_section_statement, | |
3671 | fill_type *fill, | |
3672 | bfd_vma dot) | |
420e579c HPN |
3673 | { |
3674 | /* Callers of exp_fold_tree need to increment this. */ | |
3675 | lang_statement_iteration++; | |
3676 | lang_do_assignments_1 (s, output_section_statement, fill, dot); | |
3677 | } | |
3678 | ||
252b5132 RH |
3679 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the |
3680 | operator .startof. (section_name), it produces an undefined symbol | |
3681 | .startof.section_name. Similarly, when it sees | |
3682 | .sizeof. (section_name), it produces an undefined symbol | |
3683 | .sizeof.section_name. For all the output sections, we look for | |
3684 | such symbols, and set them to the correct value. */ | |
3685 | ||
3686 | static void | |
1579bae1 | 3687 | lang_set_startof (void) |
252b5132 RH |
3688 | { |
3689 | asection *s; | |
3690 | ||
1049f94e | 3691 | if (link_info.relocatable) |
252b5132 RH |
3692 | return; |
3693 | ||
3694 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3695 | { | |
3696 | const char *secname; | |
3697 | char *buf; | |
3698 | struct bfd_link_hash_entry *h; | |
3699 | ||
3700 | secname = bfd_get_section_name (output_bfd, s); | |
3701 | buf = xmalloc (10 + strlen (secname)); | |
3702 | ||
3703 | sprintf (buf, ".startof.%s", secname); | |
b34976b6 | 3704 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
3705 | if (h != NULL && h->type == bfd_link_hash_undefined) |
3706 | { | |
3707 | h->type = bfd_link_hash_defined; | |
3708 | h->u.def.value = bfd_get_section_vma (output_bfd, s); | |
3709 | h->u.def.section = bfd_abs_section_ptr; | |
3710 | } | |
3711 | ||
3712 | sprintf (buf, ".sizeof.%s", secname); | |
b34976b6 | 3713 | h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE); |
252b5132 RH |
3714 | if (h != NULL && h->type == bfd_link_hash_undefined) |
3715 | { | |
3716 | h->type = bfd_link_hash_defined; | |
3717 | if (s->_cooked_size != 0) | |
e5caa5e0 | 3718 | h->u.def.value = TO_ADDR (s->_cooked_size); |
252b5132 | 3719 | else |
e5caa5e0 | 3720 | h->u.def.value = TO_ADDR (s->_raw_size); |
252b5132 RH |
3721 | h->u.def.section = bfd_abs_section_ptr; |
3722 | } | |
3723 | ||
3724 | free (buf); | |
3725 | } | |
3726 | } | |
3727 | ||
3728 | static void | |
1579bae1 | 3729 | lang_finish (void) |
252b5132 RH |
3730 | { |
3731 | struct bfd_link_hash_entry *h; | |
b34976b6 | 3732 | bfd_boolean warn; |
252b5132 | 3733 | |
1049f94e | 3734 | if (link_info.relocatable || link_info.shared) |
b34976b6 | 3735 | warn = FALSE; |
252b5132 | 3736 | else |
b34976b6 | 3737 | warn = TRUE; |
252b5132 | 3738 | |
1579bae1 | 3739 | if (entry_symbol.name == NULL) |
252b5132 RH |
3740 | { |
3741 | /* No entry has been specified. Look for start, but don't warn | |
3742 | if we don't find it. */ | |
e3e942e9 | 3743 | entry_symbol.name = "start"; |
b34976b6 | 3744 | warn = FALSE; |
252b5132 RH |
3745 | } |
3746 | ||
e3e942e9 | 3747 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, |
b34976b6 | 3748 | FALSE, FALSE, TRUE); |
1579bae1 | 3749 | if (h != NULL |
252b5132 RH |
3750 | && (h->type == bfd_link_hash_defined |
3751 | || h->type == bfd_link_hash_defweak) | |
3752 | && h->u.def.section->output_section != NULL) | |
3753 | { | |
3754 | bfd_vma val; | |
3755 | ||
3756 | val = (h->u.def.value | |
3757 | + bfd_get_section_vma (output_bfd, | |
3758 | h->u.def.section->output_section) | |
3759 | + h->u.def.section->output_offset); | |
3760 | if (! bfd_set_start_address (output_bfd, val)) | |
e3e942e9 | 3761 | einfo (_("%P%F:%s: can't set start address\n"), entry_symbol.name); |
252b5132 RH |
3762 | } |
3763 | else | |
3764 | { | |
3765 | bfd_vma val; | |
5f992e62 | 3766 | const char *send; |
252b5132 RH |
3767 | |
3768 | /* We couldn't find the entry symbol. Try parsing it as a | |
3769 | number. */ | |
e3e942e9 | 3770 | val = bfd_scan_vma (entry_symbol.name, &send, 0); |
252b5132 RH |
3771 | if (*send == '\0') |
3772 | { | |
3773 | if (! bfd_set_start_address (output_bfd, val)) | |
3774 | einfo (_("%P%F: can't set start address\n")); | |
3775 | } | |
3776 | else | |
3777 | { | |
3778 | asection *ts; | |
3779 | ||
3780 | /* Can't find the entry symbol, and it's not a number. Use | |
3781 | the first address in the text section. */ | |
1e281515 | 3782 | ts = bfd_get_section_by_name (output_bfd, entry_section); |
1579bae1 | 3783 | if (ts != NULL) |
252b5132 RH |
3784 | { |
3785 | if (warn) | |
6feb9908 AM |
3786 | einfo (_("%P: warning: cannot find entry symbol %s;" |
3787 | " defaulting to %V\n"), | |
e3e942e9 AM |
3788 | entry_symbol.name, |
3789 | bfd_get_section_vma (output_bfd, ts)); | |
252b5132 RH |
3790 | if (! bfd_set_start_address (output_bfd, |
3791 | bfd_get_section_vma (output_bfd, | |
3792 | ts))) | |
3793 | einfo (_("%P%F: can't set start address\n")); | |
3794 | } | |
3795 | else | |
3796 | { | |
3797 | if (warn) | |
6feb9908 AM |
3798 | einfo (_("%P: warning: cannot find entry symbol %s;" |
3799 | " not setting start address\n"), | |
e3e942e9 | 3800 | entry_symbol.name); |
252b5132 RH |
3801 | } |
3802 | } | |
3803 | } | |
420e579c HPN |
3804 | |
3805 | bfd_hash_table_free (&lang_definedness_table); | |
252b5132 RH |
3806 | } |
3807 | ||
3808 | /* This is a small function used when we want to ignore errors from | |
3809 | BFD. */ | |
3810 | ||
3811 | static void | |
87f2a346 | 3812 | ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...) |
252b5132 RH |
3813 | { |
3814 | /* Don't do anything. */ | |
3815 | } | |
3816 | ||
3817 | /* Check that the architecture of all the input files is compatible | |
3818 | with the output file. Also call the backend to let it do any | |
3819 | other checking that is needed. */ | |
3820 | ||
3821 | static void | |
1579bae1 | 3822 | lang_check (void) |
252b5132 RH |
3823 | { |
3824 | lang_statement_union_type *file; | |
3825 | bfd *input_bfd; | |
5f992e62 | 3826 | const bfd_arch_info_type *compatible; |
252b5132 | 3827 | |
1579bae1 | 3828 | for (file = file_chain.head; file != NULL; file = file->input_statement.next) |
252b5132 RH |
3829 | { |
3830 | input_bfd = file->input_statement.the_bfd; | |
6feb9908 AM |
3831 | compatible |
3832 | = bfd_arch_get_compatible (input_bfd, output_bfd, | |
3833 | command_line.accept_unknown_input_arch); | |
30cba025 AM |
3834 | |
3835 | /* In general it is not possible to perform a relocatable | |
3836 | link between differing object formats when the input | |
3837 | file has relocations, because the relocations in the | |
3838 | input format may not have equivalent representations in | |
3839 | the output format (and besides BFD does not translate | |
3840 | relocs for other link purposes than a final link). */ | |
1049f94e | 3841 | if ((link_info.relocatable || link_info.emitrelocations) |
30cba025 | 3842 | && (compatible == NULL |
d35a52e2 | 3843 | || bfd_get_flavour (input_bfd) != bfd_get_flavour (output_bfd)) |
30cba025 AM |
3844 | && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0) |
3845 | { | |
6feb9908 AM |
3846 | einfo (_("%P%F: Relocatable linking with relocations from" |
3847 | " format %s (%B) to format %s (%B) is not supported\n"), | |
30cba025 AM |
3848 | bfd_get_target (input_bfd), input_bfd, |
3849 | bfd_get_target (output_bfd), output_bfd); | |
3850 | /* einfo with %F exits. */ | |
3851 | } | |
3852 | ||
252b5132 RH |
3853 | if (compatible == NULL) |
3854 | { | |
3855 | if (command_line.warn_mismatch) | |
6feb9908 AM |
3856 | einfo (_("%P: warning: %s architecture of input file `%B'" |
3857 | " is incompatible with %s output\n"), | |
252b5132 RH |
3858 | bfd_printable_name (input_bfd), input_bfd, |
3859 | bfd_printable_name (output_bfd)); | |
3860 | } | |
b9247304 | 3861 | else if (bfd_count_sections (input_bfd)) |
252b5132 | 3862 | { |
b9247304 | 3863 | /* If the input bfd has no contents, it shouldn't set the |
b7a26f91 | 3864 | private data of the output bfd. */ |
b9247304 | 3865 | |
252b5132 RH |
3866 | bfd_error_handler_type pfn = NULL; |
3867 | ||
3868 | /* If we aren't supposed to warn about mismatched input | |
3869 | files, temporarily set the BFD error handler to a | |
3870 | function which will do nothing. We still want to call | |
3871 | bfd_merge_private_bfd_data, since it may set up | |
3872 | information which is needed in the output file. */ | |
3873 | if (! command_line.warn_mismatch) | |
3874 | pfn = bfd_set_error_handler (ignore_bfd_errors); | |
3875 | if (! bfd_merge_private_bfd_data (input_bfd, output_bfd)) | |
3876 | { | |
3877 | if (command_line.warn_mismatch) | |
6feb9908 AM |
3878 | einfo (_("%P%X: failed to merge target specific data" |
3879 | " of file %B\n"), input_bfd); | |
252b5132 RH |
3880 | } |
3881 | if (! command_line.warn_mismatch) | |
3882 | bfd_set_error_handler (pfn); | |
3883 | } | |
3884 | } | |
3885 | } | |
3886 | ||
3887 | /* Look through all the global common symbols and attach them to the | |
3888 | correct section. The -sort-common command line switch may be used | |
3889 | to roughly sort the entries by size. */ | |
3890 | ||
3891 | static void | |
1579bae1 | 3892 | lang_common (void) |
252b5132 | 3893 | { |
4818e05f AM |
3894 | if (command_line.inhibit_common_definition) |
3895 | return; | |
1049f94e | 3896 | if (link_info.relocatable |
252b5132 RH |
3897 | && ! command_line.force_common_definition) |
3898 | return; | |
3899 | ||
3900 | if (! config.sort_common) | |
1579bae1 | 3901 | bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL); |
252b5132 RH |
3902 | else |
3903 | { | |
3904 | int power; | |
3905 | ||
3906 | for (power = 4; power >= 0; power--) | |
1579bae1 | 3907 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); |
252b5132 RH |
3908 | } |
3909 | } | |
3910 | ||
3911 | /* Place one common symbol in the correct section. */ | |
3912 | ||
b34976b6 | 3913 | static bfd_boolean |
1579bae1 | 3914 | lang_one_common (struct bfd_link_hash_entry *h, void *info) |
252b5132 RH |
3915 | { |
3916 | unsigned int power_of_two; | |
3917 | bfd_vma size; | |
3918 | asection *section; | |
3919 | ||
3920 | if (h->type != bfd_link_hash_common) | |
b34976b6 | 3921 | return TRUE; |
252b5132 RH |
3922 | |
3923 | size = h->u.c.size; | |
3924 | power_of_two = h->u.c.p->alignment_power; | |
3925 | ||
3926 | if (config.sort_common | |
3927 | && power_of_two < (unsigned int) *(int *) info) | |
b34976b6 | 3928 | return TRUE; |
252b5132 RH |
3929 | |
3930 | section = h->u.c.p->section; | |
3931 | ||
e5caa5e0 AM |
3932 | /* Increase the size of the section to align the common sym. */ |
3933 | section->_cooked_size += ((bfd_vma) 1 << (power_of_two + opb_shift)) - 1; | |
3934 | section->_cooked_size &= (- (bfd_vma) 1 << (power_of_two + opb_shift)); | |
252b5132 RH |
3935 | |
3936 | /* Adjust the alignment if necessary. */ | |
3937 | if (power_of_two > section->alignment_power) | |
3938 | section->alignment_power = power_of_two; | |
3939 | ||
3940 | /* Change the symbol from common to defined. */ | |
3941 | h->type = bfd_link_hash_defined; | |
3942 | h->u.def.section = section; | |
3943 | h->u.def.value = section->_cooked_size; | |
3944 | ||
3945 | /* Increase the size of the section. */ | |
3946 | section->_cooked_size += size; | |
3947 | ||
3948 | /* Make sure the section is allocated in memory, and make sure that | |
3949 | it is no longer a common section. */ | |
3950 | section->flags |= SEC_ALLOC; | |
08da4cac | 3951 | section->flags &= ~SEC_IS_COMMON; |
252b5132 RH |
3952 | |
3953 | if (config.map_file != NULL) | |
3954 | { | |
b34976b6 | 3955 | static bfd_boolean header_printed; |
252b5132 RH |
3956 | int len; |
3957 | char *name; | |
3958 | char buf[50]; | |
3959 | ||
3960 | if (! header_printed) | |
3961 | { | |
3962 | minfo (_("\nAllocating common symbols\n")); | |
3963 | minfo (_("Common symbol size file\n\n")); | |
b34976b6 | 3964 | header_printed = TRUE; |
252b5132 RH |
3965 | } |
3966 | ||
3967 | name = demangle (h->root.string); | |
3968 | minfo ("%s", name); | |
3969 | len = strlen (name); | |
3970 | free (name); | |
3971 | ||
3972 | if (len >= 19) | |
3973 | { | |
3974 | print_nl (); | |
3975 | len = 0; | |
3976 | } | |
3977 | while (len < 20) | |
3978 | { | |
3979 | print_space (); | |
3980 | ++len; | |
3981 | } | |
3982 | ||
3983 | minfo ("0x"); | |
3984 | if (size <= 0xffffffff) | |
3985 | sprintf (buf, "%lx", (unsigned long) size); | |
3986 | else | |
3987 | sprintf_vma (buf, size); | |
3988 | minfo ("%s", buf); | |
3989 | len = strlen (buf); | |
3990 | ||
3991 | while (len < 16) | |
3992 | { | |
3993 | print_space (); | |
3994 | ++len; | |
3995 | } | |
3996 | ||
3997 | minfo ("%B\n", section->owner); | |
3998 | } | |
3999 | ||
b34976b6 | 4000 | return TRUE; |
252b5132 RH |
4001 | } |
4002 | ||
08da4cac KH |
4003 | /* Run through the input files and ensure that every input section has |
4004 | somewhere to go. If one is found without a destination then create | |
4005 | an input request and place it into the statement tree. */ | |
252b5132 RH |
4006 | |
4007 | static void | |
1579bae1 | 4008 | lang_place_orphans (void) |
252b5132 | 4009 | { |
e50d8076 | 4010 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
4011 | { |
4012 | asection *s; | |
4013 | ||
1579bae1 | 4014 | for (s = file->the_bfd->sections; s != NULL; s = s->next) |
252b5132 | 4015 | { |
1579bae1 | 4016 | if (s->output_section == NULL) |
252b5132 | 4017 | { |
396a2467 | 4018 | /* This section of the file is not attached, root |
08da4cac | 4019 | around for a sensible place for it to go. */ |
252b5132 RH |
4020 | |
4021 | if (file->just_syms_flag) | |
164e712d AM |
4022 | abort (); |
4023 | ||
4024 | if ((s->flags & SEC_EXCLUDE) != 0) | |
4025 | s->output_section = bfd_abs_section_ptr; | |
252b5132 RH |
4026 | else if (strcmp (s->name, "COMMON") == 0) |
4027 | { | |
4028 | /* This is a lonely common section which must have | |
4029 | come from an archive. We attach to the section | |
4030 | with the wildcard. */ | |
1049f94e | 4031 | if (! link_info.relocatable |
252b5132 RH |
4032 | || command_line.force_common_definition) |
4033 | { | |
4034 | if (default_common_section == NULL) | |
4035 | { | |
4036 | #if 0 | |
4037 | /* This message happens when using the | |
4038 | svr3.ifile linker script, so I have | |
4039 | disabled it. */ | |
6feb9908 AM |
4040 | info_msg (_("%P: no [COMMON] command," |
4041 | " defaulting to .bss\n")); | |
252b5132 RH |
4042 | #endif |
4043 | default_common_section = | |
4044 | lang_output_section_statement_lookup (".bss"); | |
4045 | ||
4046 | } | |
39dcfe18 AM |
4047 | lang_add_section (&default_common_section->children, s, |
4048 | default_common_section, file); | |
252b5132 RH |
4049 | } |
4050 | } | |
4051 | else if (ldemul_place_orphan (file, s)) | |
4052 | ; | |
4053 | else | |
4054 | { | |
39dcfe18 | 4055 | lang_output_section_statement_type *os; |
252b5132 | 4056 | |
39dcfe18 AM |
4057 | os = lang_output_section_statement_lookup (s->name); |
4058 | lang_add_section (&os->children, s, os, file); | |
252b5132 RH |
4059 | } |
4060 | } | |
4061 | } | |
4062 | } | |
4063 | } | |
4064 | ||
252b5132 | 4065 | void |
1579bae1 | 4066 | lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert) |
252b5132 | 4067 | { |
aa8804e4 | 4068 | flagword *ptr_flags; |
252b5132 | 4069 | |
aa8804e4 | 4070 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
252b5132 RH |
4071 | while (*flags) |
4072 | { | |
4073 | switch (*flags) | |
4074 | { | |
252b5132 RH |
4075 | case 'A': case 'a': |
4076 | *ptr_flags |= SEC_ALLOC; | |
4077 | break; | |
4078 | ||
4079 | case 'R': case 'r': | |
4080 | *ptr_flags |= SEC_READONLY; | |
4081 | break; | |
4082 | ||
4083 | case 'W': case 'w': | |
4084 | *ptr_flags |= SEC_DATA; | |
4085 | break; | |
4086 | ||
4087 | case 'X': case 'x': | |
4088 | *ptr_flags |= SEC_CODE; | |
4089 | break; | |
4090 | ||
4091 | case 'L': case 'l': | |
4092 | case 'I': case 'i': | |
4093 | *ptr_flags |= SEC_LOAD; | |
4094 | break; | |
4095 | ||
4096 | default: | |
4097 | einfo (_("%P%F: invalid syntax in flags\n")); | |
4098 | break; | |
4099 | } | |
4100 | flags++; | |
4101 | } | |
4102 | } | |
4103 | ||
4104 | /* Call a function on each input file. This function will be called | |
4105 | on an archive, but not on the elements. */ | |
4106 | ||
4107 | void | |
1579bae1 | 4108 | lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
252b5132 RH |
4109 | { |
4110 | lang_input_statement_type *f; | |
4111 | ||
4112 | for (f = (lang_input_statement_type *) input_file_chain.head; | |
4113 | f != NULL; | |
4114 | f = (lang_input_statement_type *) f->next_real_file) | |
4115 | func (f); | |
4116 | } | |
4117 | ||
4118 | /* Call a function on each file. The function will be called on all | |
4119 | the elements of an archive which are included in the link, but will | |
4120 | not be called on the archive file itself. */ | |
4121 | ||
4122 | void | |
1579bae1 | 4123 | lang_for_each_file (void (*func) (lang_input_statement_type *)) |
252b5132 | 4124 | { |
e50d8076 | 4125 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 RH |
4126 | { |
4127 | func (f); | |
4128 | } | |
4129 | } | |
4130 | ||
252b5132 | 4131 | void |
1579bae1 | 4132 | ldlang_add_file (lang_input_statement_type *entry) |
252b5132 RH |
4133 | { |
4134 | bfd **pp; | |
4135 | ||
4136 | lang_statement_append (&file_chain, | |
4137 | (lang_statement_union_type *) entry, | |
4138 | &entry->next); | |
4139 | ||
4140 | /* The BFD linker needs to have a list of all input BFDs involved in | |
4141 | a link. */ | |
1579bae1 | 4142 | ASSERT (entry->the_bfd->link_next == NULL); |
252b5132 | 4143 | ASSERT (entry->the_bfd != output_bfd); |
1579bae1 | 4144 | for (pp = &link_info.input_bfds; *pp != NULL; pp = &(*pp)->link_next) |
252b5132 RH |
4145 | ; |
4146 | *pp = entry->the_bfd; | |
1579bae1 | 4147 | entry->the_bfd->usrdata = entry; |
252b5132 RH |
4148 | bfd_set_gp_size (entry->the_bfd, g_switch_value); |
4149 | ||
4150 | /* Look through the sections and check for any which should not be | |
4151 | included in the link. We need to do this now, so that we can | |
4152 | notice when the backend linker tries to report multiple | |
4153 | definition errors for symbols which are in sections we aren't | |
4154 | going to link. FIXME: It might be better to entirely ignore | |
4155 | symbols which are defined in sections which are going to be | |
4156 | discarded. This would require modifying the backend linker for | |
4157 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
4158 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
4159 | ||
1579bae1 | 4160 | bfd_map_over_sections (entry->the_bfd, section_already_linked, entry); |
252b5132 RH |
4161 | } |
4162 | ||
4163 | void | |
1579bae1 | 4164 | lang_add_output (const char *name, int from_script) |
252b5132 RH |
4165 | { |
4166 | /* Make -o on command line override OUTPUT in script. */ | |
7c519c12 | 4167 | if (!had_output_filename || !from_script) |
252b5132 RH |
4168 | { |
4169 | output_filename = name; | |
b34976b6 | 4170 | had_output_filename = TRUE; |
252b5132 RH |
4171 | } |
4172 | } | |
4173 | ||
252b5132 RH |
4174 | static lang_output_section_statement_type *current_section; |
4175 | ||
4176 | static int | |
1579bae1 | 4177 | topower (int x) |
252b5132 RH |
4178 | { |
4179 | unsigned int i = 1; | |
4180 | int l; | |
4181 | ||
4182 | if (x < 0) | |
4183 | return -1; | |
4184 | ||
5f992e62 | 4185 | for (l = 0; l < 32; l++) |
252b5132 RH |
4186 | { |
4187 | if (i >= (unsigned int) x) | |
4188 | return l; | |
4189 | i <<= 1; | |
4190 | } | |
4191 | ||
4192 | return 0; | |
4193 | } | |
4194 | ||
aea4bd9d | 4195 | lang_output_section_statement_type * |
1579bae1 AM |
4196 | lang_enter_output_section_statement (const char *output_section_statement_name, |
4197 | etree_type *address_exp, | |
4198 | enum section_type sectype, | |
1579bae1 AM |
4199 | etree_type *align, |
4200 | etree_type *subalign, | |
0841712e JJ |
4201 | etree_type *ebase, |
4202 | int constraint) | |
252b5132 RH |
4203 | { |
4204 | lang_output_section_statement_type *os; | |
4205 | ||
4206 | current_section = | |
4207 | os = | |
0841712e JJ |
4208 | lang_output_section_statement_lookup_1 (output_section_statement_name, |
4209 | constraint); | |
252b5132 | 4210 | |
08da4cac KH |
4211 | /* Add this statement to tree. */ |
4212 | #if 0 | |
4213 | add_statement (lang_output_section_statement_enum, | |
4214 | output_section_statement); | |
4215 | #endif | |
4216 | /* Make next things chain into subchain of this. */ | |
252b5132 | 4217 | |
1579bae1 | 4218 | if (os->addr_tree == NULL) |
08da4cac KH |
4219 | { |
4220 | os->addr_tree = address_exp; | |
4221 | } | |
252b5132 RH |
4222 | os->sectype = sectype; |
4223 | if (sectype != noload_section) | |
4224 | os->flags = SEC_NO_FLAGS; | |
4225 | else | |
4226 | os->flags = SEC_NEVER_LOAD; | |
e5caa5e0 | 4227 | os->block_value = 1; |
252b5132 RH |
4228 | stat_ptr = &os->children; |
4229 | ||
08da4cac KH |
4230 | os->subsection_alignment = |
4231 | topower (exp_get_value_int (subalign, -1, "subsection alignment", 0)); | |
4232 | os->section_alignment = | |
4233 | topower (exp_get_value_int (align, -1, "section alignment", 0)); | |
252b5132 RH |
4234 | |
4235 | os->load_base = ebase; | |
aea4bd9d | 4236 | return os; |
252b5132 RH |
4237 | } |
4238 | ||
252b5132 | 4239 | void |
1579bae1 | 4240 | lang_final (void) |
252b5132 RH |
4241 | { |
4242 | lang_output_statement_type *new = | |
4243 | new_stat (lang_output_statement, stat_ptr); | |
4244 | ||
4245 | new->name = output_filename; | |
4246 | } | |
4247 | ||
08da4cac KH |
4248 | /* Reset the current counters in the regions. */ |
4249 | ||
e3dc8847 | 4250 | void |
1579bae1 | 4251 | lang_reset_memory_regions (void) |
252b5132 RH |
4252 | { |
4253 | lang_memory_region_type *p = lang_memory_region_list; | |
b3327aad | 4254 | asection *o; |
252b5132 | 4255 | |
1579bae1 | 4256 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
4257 | { |
4258 | p->old_length = (bfd_size_type) (p->current - p->origin); | |
4259 | p->current = p->origin; | |
4260 | } | |
b3327aad AM |
4261 | |
4262 | for (o = output_bfd->sections; o != NULL; o = o->next) | |
4263 | o->_raw_size = 0; | |
252b5132 RH |
4264 | } |
4265 | ||
164e712d | 4266 | /* Worker for lang_gc_sections_1. */ |
252b5132 RH |
4267 | |
4268 | static void | |
1579bae1 AM |
4269 | gc_section_callback (lang_wild_statement_type *ptr, |
4270 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
4271 | asection *section, | |
4272 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
4273 | void *data ATTRIBUTE_UNUSED) | |
252b5132 | 4274 | { |
164e712d AM |
4275 | /* If the wild pattern was marked KEEP, the member sections |
4276 | should be as well. */ | |
4dec4d4e RH |
4277 | if (ptr->keep_sections) |
4278 | section->flags |= SEC_KEEP; | |
252b5132 RH |
4279 | } |
4280 | ||
252b5132 RH |
4281 | /* Iterate over sections marking them against GC. */ |
4282 | ||
4283 | static void | |
1579bae1 | 4284 | lang_gc_sections_1 (lang_statement_union_type *s) |
252b5132 | 4285 | { |
1579bae1 | 4286 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
4287 | { |
4288 | switch (s->header.type) | |
4289 | { | |
4290 | case lang_wild_statement_enum: | |
164e712d | 4291 | walk_wild (&s->wild_statement, gc_section_callback, NULL); |
abc6ab0a | 4292 | break; |
252b5132 RH |
4293 | case lang_constructors_statement_enum: |
4294 | lang_gc_sections_1 (constructor_list.head); | |
4295 | break; | |
4296 | case lang_output_section_statement_enum: | |
4297 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
4298 | break; | |
4299 | case lang_group_statement_enum: | |
4300 | lang_gc_sections_1 (s->group_statement.children.head); | |
4301 | break; | |
4302 | default: | |
4303 | break; | |
4304 | } | |
4305 | } | |
4306 | } | |
4307 | ||
4308 | static void | |
1579bae1 | 4309 | lang_gc_sections (void) |
252b5132 RH |
4310 | { |
4311 | struct bfd_link_hash_entry *h; | |
e3e942e9 | 4312 | ldlang_undef_chain_list_type *ulist; |
252b5132 RH |
4313 | |
4314 | /* Keep all sections so marked in the link script. */ | |
4315 | ||
4316 | lang_gc_sections_1 (statement_list.head); | |
4317 | ||
e3e942e9 AM |
4318 | /* Keep all sections containing symbols undefined on the command-line, |
4319 | and the section containing the entry symbol. */ | |
252b5132 | 4320 | |
e3e942e9 | 4321 | for (ulist = link_info.gc_sym_list; ulist; ulist = ulist->next) |
252b5132 | 4322 | { |
5f992e62 | 4323 | h = bfd_link_hash_lookup (link_info.hash, ulist->name, |
b34976b6 | 4324 | FALSE, FALSE, FALSE); |
252b5132 | 4325 | |
1579bae1 | 4326 | if (h != NULL |
08da4cac KH |
4327 | && (h->type == bfd_link_hash_defined |
4328 | || h->type == bfd_link_hash_defweak) | |
252b5132 RH |
4329 | && ! bfd_is_abs_section (h->u.def.section)) |
4330 | { | |
4331 | h->u.def.section->flags |= SEC_KEEP; | |
4332 | } | |
4333 | } | |
4334 | ||
9ca57817 AM |
4335 | /* SEC_EXCLUDE is ignored when doing a relocatable link, except in |
4336 | the special case of debug info. (See bfd/stabs.c) | |
4337 | Twiddle the flag here, to simplify later linker code. */ | |
4338 | if (link_info.relocatable) | |
4339 | { | |
4340 | LANG_FOR_EACH_INPUT_STATEMENT (f) | |
4341 | { | |
4342 | asection *sec; | |
4343 | for (sec = f->the_bfd->sections; sec != NULL; sec = sec->next) | |
4344 | if ((sec->flags & SEC_DEBUGGING) == 0) | |
4345 | sec->flags &= ~SEC_EXCLUDE; | |
4346 | } | |
4347 | } | |
4348 | ||
164e712d AM |
4349 | if (command_line.gc_sections) |
4350 | bfd_gc_sections (output_bfd, &link_info); | |
252b5132 RH |
4351 | } |
4352 | ||
4353 | void | |
1579bae1 | 4354 | lang_process (void) |
252b5132 RH |
4355 | { |
4356 | lang_reasonable_defaults (); | |
4357 | current_target = default_target; | |
4358 | ||
08da4cac KH |
4359 | /* Open the output file. */ |
4360 | lang_for_each_statement (ldlang_open_output); | |
e5caa5e0 | 4361 | init_opb (); |
252b5132 RH |
4362 | |
4363 | ldemul_create_output_section_statements (); | |
4364 | ||
08da4cac | 4365 | /* Add to the hash table all undefineds on the command line. */ |
252b5132 RH |
4366 | lang_place_undefineds (); |
4367 | ||
9503fd87 ILT |
4368 | already_linked_table_init (); |
4369 | ||
08da4cac | 4370 | /* Create a bfd for each input file. */ |
252b5132 | 4371 | current_target = default_target; |
b34976b6 | 4372 | open_input_bfds (statement_list.head, FALSE); |
252b5132 | 4373 | |
e3e942e9 AM |
4374 | link_info.gc_sym_list = &entry_symbol; |
4375 | if (entry_symbol.name == NULL) | |
4376 | link_info.gc_sym_list = ldlang_undef_chain_list_head; | |
4377 | ||
252b5132 RH |
4378 | ldemul_after_open (); |
4379 | ||
9503fd87 ILT |
4380 | already_linked_table_free (); |
4381 | ||
252b5132 RH |
4382 | /* Make sure that we're not mixing architectures. We call this |
4383 | after all the input files have been opened, but before we do any | |
4384 | other processing, so that any operations merge_private_bfd_data | |
4385 | does on the output file will be known during the rest of the | |
4386 | link. */ | |
4387 | lang_check (); | |
4388 | ||
4389 | /* Handle .exports instead of a version script if we're told to do so. */ | |
4390 | if (command_line.version_exports_section) | |
4391 | lang_do_version_exports_section (); | |
4392 | ||
4393 | /* Build all sets based on the information gathered from the input | |
4394 | files. */ | |
4395 | ldctor_build_sets (); | |
4396 | ||
4397 | /* Remove unreferenced sections if asked to. */ | |
164e712d | 4398 | lang_gc_sections (); |
252b5132 | 4399 | |
08da4cac | 4400 | /* Size up the common data. */ |
252b5132 RH |
4401 | lang_common (); |
4402 | ||
4403 | /* Run through the contours of the script and attach input sections | |
08da4cac | 4404 | to the correct output sections. */ |
1579bae1 | 4405 | map_input_to_output_sections (statement_list.head, NULL, NULL); |
252b5132 | 4406 | |
08da4cac | 4407 | /* Find any sections not attached explicitly and handle them. */ |
252b5132 RH |
4408 | lang_place_orphans (); |
4409 | ||
1049f94e | 4410 | if (! link_info.relocatable) |
862120bd | 4411 | { |
57ceae94 AM |
4412 | asection *found; |
4413 | ||
4414 | /* Merge SEC_MERGE sections. This has to be done after GC of | |
4415 | sections, so that GCed sections are not merged, but before | |
4416 | assigning dynamic symbols, since removing whole input sections | |
4417 | is hard then. */ | |
4418 | bfd_merge_sections (output_bfd, &link_info); | |
4419 | ||
862120bd | 4420 | /* Look for a text section and set the readonly attribute in it. */ |
57ceae94 | 4421 | found = bfd_get_section_by_name (output_bfd, ".text"); |
862120bd | 4422 | |
1579bae1 | 4423 | if (found != NULL) |
862120bd AM |
4424 | { |
4425 | if (config.text_read_only) | |
4426 | found->flags |= SEC_READONLY; | |
4427 | else | |
4428 | found->flags &= ~SEC_READONLY; | |
4429 | } | |
4430 | } | |
4431 | ||
4432 | /* Do anything special before sizing sections. This is where ELF | |
4433 | and other back-ends size dynamic sections. */ | |
252b5132 RH |
4434 | ldemul_before_allocation (); |
4435 | ||
1049f94e | 4436 | if (!link_info.relocatable) |
4bd5a393 AM |
4437 | strip_excluded_output_sections (); |
4438 | ||
252b5132 RH |
4439 | /* We must record the program headers before we try to fix the |
4440 | section positions, since they will affect SIZEOF_HEADERS. */ | |
4441 | lang_record_phdrs (); | |
4442 | ||
b3327aad | 4443 | /* Size up the sections. */ |
1579bae1 AM |
4444 | lang_size_sections (statement_list.head, abs_output_section, |
4445 | &statement_list.head, 0, 0, NULL, | |
cf888e70 | 4446 | command_line.relax ? FALSE : TRUE); |
b3327aad | 4447 | |
08da4cac | 4448 | /* Now run around and relax if we can. */ |
252b5132 RH |
4449 | if (command_line.relax) |
4450 | { | |
252b5132 | 4451 | /* Keep relaxing until bfd_relax_section gives up. */ |
b34976b6 | 4452 | bfd_boolean relax_again; |
b3327aad | 4453 | |
252b5132 RH |
4454 | do |
4455 | { | |
b34976b6 | 4456 | relax_again = FALSE; |
252b5132 RH |
4457 | |
4458 | /* Note: pe-dll.c does something like this also. If you find | |
4459 | you need to change this code, you probably need to change | |
08da4cac | 4460 | pe-dll.c also. DJ */ |
252b5132 RH |
4461 | |
4462 | /* Do all the assignments with our current guesses as to | |
4463 | section sizes. */ | |
1579bae1 AM |
4464 | lang_do_assignments (statement_list.head, abs_output_section, |
4465 | NULL, 0); | |
252b5132 | 4466 | |
5a46fe39 JW |
4467 | /* We must do this after lang_do_assignments, because it uses |
4468 | _raw_size. */ | |
4469 | lang_reset_memory_regions (); | |
4470 | ||
252b5132 | 4471 | /* Perform another relax pass - this time we know where the |
0d6d936f | 4472 | globals are, so can make a better guess. */ |
1579bae1 AM |
4473 | lang_size_sections (statement_list.head, abs_output_section, |
4474 | &statement_list.head, 0, 0, &relax_again, FALSE); | |
c7996ad6 L |
4475 | |
4476 | /* If the normal relax is done and the relax finalize pass | |
4477 | is not performed yet, we perform another relax pass. */ | |
d9c458fc | 4478 | if (!relax_again && link_info.need_relax_finalize) |
c7996ad6 | 4479 | { |
d9c458fc | 4480 | link_info.need_relax_finalize = FALSE; |
c7996ad6 L |
4481 | relax_again = TRUE; |
4482 | } | |
252b5132 RH |
4483 | } |
4484 | while (relax_again); | |
cf888e70 NC |
4485 | |
4486 | /* Final extra sizing to report errors. */ | |
1579bae1 | 4487 | lang_do_assignments (statement_list.head, abs_output_section, NULL, 0); |
5a46fe39 | 4488 | lang_reset_memory_regions (); |
1579bae1 AM |
4489 | lang_size_sections (statement_list.head, abs_output_section, |
4490 | &statement_list.head, 0, 0, NULL, TRUE); | |
252b5132 | 4491 | } |
252b5132 RH |
4492 | |
4493 | /* See if anything special should be done now we know how big | |
4494 | everything is. */ | |
4495 | ldemul_after_allocation (); | |
4496 | ||
4497 | /* Fix any .startof. or .sizeof. symbols. */ | |
4498 | lang_set_startof (); | |
4499 | ||
08da4cac KH |
4500 | /* Do all the assignments, now that we know the final resting places |
4501 | of all the symbols. */ | |
252b5132 | 4502 | |
1579bae1 | 4503 | lang_do_assignments (statement_list.head, abs_output_section, NULL, 0); |
252b5132 RH |
4504 | |
4505 | /* Make sure that the section addresses make sense. */ | |
1049f94e | 4506 | if (! link_info.relocatable |
252b5132 RH |
4507 | && command_line.check_section_addresses) |
4508 | lang_check_section_addresses (); | |
5f992e62 | 4509 | |
08da4cac | 4510 | /* Final stuffs. */ |
252b5132 RH |
4511 | |
4512 | ldemul_finish (); | |
4513 | lang_finish (); | |
4514 | } | |
4515 | ||
4516 | /* EXPORTED TO YACC */ | |
4517 | ||
4518 | void | |
1579bae1 AM |
4519 | lang_add_wild (struct wildcard_spec *filespec, |
4520 | struct wildcard_list *section_list, | |
4521 | bfd_boolean keep_sections) | |
252b5132 | 4522 | { |
b6bf44ba AM |
4523 | struct wildcard_list *curr, *next; |
4524 | lang_wild_statement_type *new; | |
4525 | ||
4526 | /* Reverse the list as the parser puts it back to front. */ | |
4527 | for (curr = section_list, section_list = NULL; | |
4528 | curr != NULL; | |
4529 | section_list = curr, curr = next) | |
4530 | { | |
4531 | if (curr->spec.name != NULL && strcmp (curr->spec.name, "COMMON") == 0) | |
b34976b6 | 4532 | placed_commons = TRUE; |
252b5132 | 4533 | |
b6bf44ba AM |
4534 | next = curr->next; |
4535 | curr->next = section_list; | |
4536 | } | |
4537 | ||
4538 | if (filespec != NULL && filespec->name != NULL) | |
252b5132 | 4539 | { |
b6bf44ba AM |
4540 | if (strcmp (filespec->name, "*") == 0) |
4541 | filespec->name = NULL; | |
4542 | else if (! wildcardp (filespec->name)) | |
b34976b6 | 4543 | lang_has_input_file = TRUE; |
252b5132 | 4544 | } |
b6bf44ba AM |
4545 | |
4546 | new = new_stat (lang_wild_statement, stat_ptr); | |
4547 | new->filename = NULL; | |
b34976b6 | 4548 | new->filenames_sorted = FALSE; |
b6bf44ba | 4549 | if (filespec != NULL) |
252b5132 | 4550 | { |
b6bf44ba AM |
4551 | new->filename = filespec->name; |
4552 | new->filenames_sorted = filespec->sorted; | |
252b5132 | 4553 | } |
b6bf44ba | 4554 | new->section_list = section_list; |
252b5132 | 4555 | new->keep_sections = keep_sections; |
252b5132 RH |
4556 | lang_list_init (&new->children); |
4557 | } | |
4558 | ||
4559 | void | |
1579bae1 | 4560 | lang_section_start (const char *name, etree_type *address) |
252b5132 | 4561 | { |
d1778b88 | 4562 | lang_address_statement_type *ad; |
252b5132 | 4563 | |
d1778b88 | 4564 | ad = new_stat (lang_address_statement, stat_ptr); |
252b5132 RH |
4565 | ad->section_name = name; |
4566 | ad->address = address; | |
4567 | } | |
4568 | ||
4569 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
4570 | because of a -e argument on the command line, or zero if this is | |
4571 | called by ENTRY in a linker script. Command line arguments take | |
4572 | precedence. */ | |
4573 | ||
4574 | void | |
1579bae1 | 4575 | lang_add_entry (const char *name, bfd_boolean cmdline) |
252b5132 | 4576 | { |
e3e942e9 | 4577 | if (entry_symbol.name == NULL |
252b5132 RH |
4578 | || cmdline |
4579 | || ! entry_from_cmdline) | |
4580 | { | |
e3e942e9 | 4581 | entry_symbol.name = name; |
252b5132 RH |
4582 | entry_from_cmdline = cmdline; |
4583 | } | |
4584 | } | |
4585 | ||
4586 | void | |
1579bae1 | 4587 | lang_add_target (const char *name) |
252b5132 RH |
4588 | { |
4589 | lang_target_statement_type *new = new_stat (lang_target_statement, | |
4590 | stat_ptr); | |
4591 | ||
4592 | new->target = name; | |
4593 | ||
4594 | } | |
4595 | ||
4596 | void | |
1579bae1 | 4597 | lang_add_map (const char *name) |
252b5132 RH |
4598 | { |
4599 | while (*name) | |
4600 | { | |
4601 | switch (*name) | |
4602 | { | |
08da4cac | 4603 | case 'F': |
b34976b6 | 4604 | map_option_f = TRUE; |
252b5132 RH |
4605 | break; |
4606 | } | |
4607 | name++; | |
4608 | } | |
4609 | } | |
4610 | ||
4611 | void | |
1579bae1 | 4612 | lang_add_fill (fill_type *fill) |
252b5132 RH |
4613 | { |
4614 | lang_fill_statement_type *new = new_stat (lang_fill_statement, | |
4615 | stat_ptr); | |
4616 | ||
2c382fb6 | 4617 | new->fill = fill; |
252b5132 RH |
4618 | } |
4619 | ||
4620 | void | |
1579bae1 | 4621 | lang_add_data (int type, union etree_union *exp) |
252b5132 RH |
4622 | { |
4623 | ||
4624 | lang_data_statement_type *new = new_stat (lang_data_statement, | |
4625 | stat_ptr); | |
4626 | ||
4627 | new->exp = exp; | |
4628 | new->type = type; | |
4629 | ||
4630 | } | |
4631 | ||
4632 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
4633 | generate. HOWTO is the corresponding howto structure (we could | |
4634 | look this up, but the caller has already done so). SECTION is the | |
4635 | section to generate a reloc against, or NAME is the name of the | |
4636 | symbol to generate a reloc against. Exactly one of SECTION and | |
4637 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
4638 | ||
4639 | void | |
1579bae1 AM |
4640 | lang_add_reloc (bfd_reloc_code_real_type reloc, |
4641 | reloc_howto_type *howto, | |
4642 | asection *section, | |
4643 | const char *name, | |
4644 | union etree_union *addend) | |
252b5132 RH |
4645 | { |
4646 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
5f992e62 | 4647 | |
252b5132 RH |
4648 | p->reloc = reloc; |
4649 | p->howto = howto; | |
4650 | p->section = section; | |
4651 | p->name = name; | |
4652 | p->addend_exp = addend; | |
4653 | ||
4654 | p->addend_value = 0; | |
4655 | p->output_section = NULL; | |
4656 | p->output_vma = 0; | |
4657 | } | |
4658 | ||
4659 | lang_assignment_statement_type * | |
1579bae1 | 4660 | lang_add_assignment (etree_type *exp) |
252b5132 RH |
4661 | { |
4662 | lang_assignment_statement_type *new = new_stat (lang_assignment_statement, | |
4663 | stat_ptr); | |
4664 | ||
4665 | new->exp = exp; | |
4666 | return new; | |
4667 | } | |
4668 | ||
4669 | void | |
1579bae1 | 4670 | lang_add_attribute (enum statement_enum attribute) |
252b5132 RH |
4671 | { |
4672 | new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); | |
4673 | } | |
4674 | ||
4675 | void | |
1579bae1 | 4676 | lang_startup (const char *name) |
252b5132 | 4677 | { |
1579bae1 | 4678 | if (startup_file != NULL) |
252b5132 RH |
4679 | { |
4680 | einfo (_("%P%Fmultiple STARTUP files\n")); | |
4681 | } | |
4682 | first_file->filename = name; | |
4683 | first_file->local_sym_name = name; | |
b34976b6 | 4684 | first_file->real = TRUE; |
252b5132 RH |
4685 | |
4686 | startup_file = name; | |
4687 | } | |
4688 | ||
4689 | void | |
1579bae1 | 4690 | lang_float (bfd_boolean maybe) |
252b5132 RH |
4691 | { |
4692 | lang_float_flag = maybe; | |
4693 | } | |
4694 | ||
ee3cc2e2 RS |
4695 | |
4696 | /* Work out the load- and run-time regions from a script statement, and | |
4697 | store them in *LMA_REGION and *REGION respectively. | |
4698 | ||
a747ee4d NC |
4699 | MEMSPEC is the name of the run-time region, or the value of |
4700 | DEFAULT_MEMORY_REGION if the statement didn't specify one. | |
4701 | LMA_MEMSPEC is the name of the load-time region, or null if the | |
4702 | statement didn't specify one.HAVE_LMA_P is TRUE if the statement | |
4703 | had an explicit load address. | |
ee3cc2e2 RS |
4704 | |
4705 | It is an error to specify both a load region and a load address. */ | |
4706 | ||
4707 | static void | |
6bdafbeb NC |
4708 | lang_get_regions (lang_memory_region_type **region, |
4709 | lang_memory_region_type **lma_region, | |
1579bae1 AM |
4710 | const char *memspec, |
4711 | const char *lma_memspec, | |
6bdafbeb NC |
4712 | bfd_boolean have_lma, |
4713 | bfd_boolean have_vma) | |
ee3cc2e2 | 4714 | { |
a747ee4d | 4715 | *lma_region = lang_memory_region_lookup (lma_memspec, FALSE); |
ee3cc2e2 | 4716 | |
6feb9908 AM |
4717 | /* If no runtime region or VMA has been specified, but the load region |
4718 | has been specified, then use the load region for the runtime region | |
4719 | as well. */ | |
6bdafbeb NC |
4720 | if (lma_memspec != NULL |
4721 | && ! have_vma | |
4722 | && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0) | |
ee3cc2e2 RS |
4723 | *region = *lma_region; |
4724 | else | |
a747ee4d | 4725 | *region = lang_memory_region_lookup (memspec, FALSE); |
ee3cc2e2 | 4726 | |
6bdafbeb | 4727 | if (have_lma && lma_memspec != 0) |
ee3cc2e2 RS |
4728 | einfo (_("%X%P:%S: section has both a load address and a load region\n")); |
4729 | } | |
4730 | ||
252b5132 | 4731 | void |
6bdafbeb NC |
4732 | lang_leave_output_section_statement (fill_type *fill, const char *memspec, |
4733 | lang_output_section_phdr_list *phdrs, | |
4734 | const char *lma_memspec) | |
252b5132 | 4735 | { |
ee3cc2e2 RS |
4736 | lang_get_regions (¤t_section->region, |
4737 | ¤t_section->lma_region, | |
4738 | memspec, lma_memspec, | |
6bdafbeb NC |
4739 | current_section->load_base != NULL, |
4740 | current_section->addr_tree != NULL); | |
252b5132 | 4741 | current_section->fill = fill; |
252b5132 RH |
4742 | current_section->phdrs = phdrs; |
4743 | stat_ptr = &statement_list; | |
4744 | } | |
4745 | ||
08da4cac KH |
4746 | /* Create an absolute symbol with the given name with the value of the |
4747 | address of first byte of the section named. | |
4748 | ||
4749 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4750 | |
252b5132 | 4751 | void |
1579bae1 | 4752 | lang_abs_symbol_at_beginning_of (const char *secname, const char *name) |
252b5132 RH |
4753 | { |
4754 | struct bfd_link_hash_entry *h; | |
4755 | ||
b34976b6 | 4756 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 4757 | if (h == NULL) |
252b5132 RH |
4758 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
4759 | ||
4760 | if (h->type == bfd_link_hash_new | |
4761 | || h->type == bfd_link_hash_undefined) | |
4762 | { | |
4763 | asection *sec; | |
4764 | ||
4765 | h->type = bfd_link_hash_defined; | |
4766 | ||
4767 | sec = bfd_get_section_by_name (output_bfd, secname); | |
1579bae1 | 4768 | if (sec == NULL) |
252b5132 RH |
4769 | h->u.def.value = 0; |
4770 | else | |
4771 | h->u.def.value = bfd_get_section_vma (output_bfd, sec); | |
4772 | ||
4773 | h->u.def.section = bfd_abs_section_ptr; | |
4774 | } | |
4775 | } | |
4776 | ||
08da4cac KH |
4777 | /* Create an absolute symbol with the given name with the value of the |
4778 | address of the first byte after the end of the section named. | |
4779 | ||
4780 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4781 | |
252b5132 | 4782 | void |
1579bae1 | 4783 | lang_abs_symbol_at_end_of (const char *secname, const char *name) |
252b5132 RH |
4784 | { |
4785 | struct bfd_link_hash_entry *h; | |
4786 | ||
b34976b6 | 4787 | h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE); |
1579bae1 | 4788 | if (h == NULL) |
252b5132 RH |
4789 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
4790 | ||
4791 | if (h->type == bfd_link_hash_new | |
4792 | || h->type == bfd_link_hash_undefined) | |
4793 | { | |
4794 | asection *sec; | |
4795 | ||
4796 | h->type = bfd_link_hash_defined; | |
4797 | ||
4798 | sec = bfd_get_section_by_name (output_bfd, secname); | |
1579bae1 | 4799 | if (sec == NULL) |
252b5132 RH |
4800 | h->u.def.value = 0; |
4801 | else | |
4802 | h->u.def.value = (bfd_get_section_vma (output_bfd, sec) | |
e5caa5e0 | 4803 | + TO_ADDR (bfd_section_size (output_bfd, sec))); |
252b5132 RH |
4804 | |
4805 | h->u.def.section = bfd_abs_section_ptr; | |
4806 | } | |
4807 | } | |
4808 | ||
4809 | void | |
1579bae1 AM |
4810 | lang_statement_append (lang_statement_list_type *list, |
4811 | lang_statement_union_type *element, | |
4812 | lang_statement_union_type **field) | |
252b5132 RH |
4813 | { |
4814 | *(list->tail) = element; | |
4815 | list->tail = field; | |
4816 | } | |
4817 | ||
4818 | /* Set the output format type. -oformat overrides scripts. */ | |
4819 | ||
4820 | void | |
1579bae1 AM |
4821 | lang_add_output_format (const char *format, |
4822 | const char *big, | |
4823 | const char *little, | |
4824 | int from_script) | |
252b5132 RH |
4825 | { |
4826 | if (output_target == NULL || !from_script) | |
4827 | { | |
4828 | if (command_line.endian == ENDIAN_BIG | |
4829 | && big != NULL) | |
4830 | format = big; | |
4831 | else if (command_line.endian == ENDIAN_LITTLE | |
4832 | && little != NULL) | |
4833 | format = little; | |
4834 | ||
4835 | output_target = format; | |
4836 | } | |
4837 | } | |
4838 | ||
4839 | /* Enter a group. This creates a new lang_group_statement, and sets | |
4840 | stat_ptr to build new statements within the group. */ | |
4841 | ||
4842 | void | |
1579bae1 | 4843 | lang_enter_group (void) |
252b5132 RH |
4844 | { |
4845 | lang_group_statement_type *g; | |
4846 | ||
4847 | g = new_stat (lang_group_statement, stat_ptr); | |
4848 | lang_list_init (&g->children); | |
4849 | stat_ptr = &g->children; | |
4850 | } | |
4851 | ||
4852 | /* Leave a group. This just resets stat_ptr to start writing to the | |
4853 | regular list of statements again. Note that this will not work if | |
4854 | groups can occur inside anything else which can adjust stat_ptr, | |
4855 | but currently they can't. */ | |
4856 | ||
4857 | void | |
1579bae1 | 4858 | lang_leave_group (void) |
252b5132 RH |
4859 | { |
4860 | stat_ptr = &statement_list; | |
4861 | } | |
4862 | ||
4863 | /* Add a new program header. This is called for each entry in a PHDRS | |
4864 | command in a linker script. */ | |
4865 | ||
4866 | void | |
1579bae1 AM |
4867 | lang_new_phdr (const char *name, |
4868 | etree_type *type, | |
4869 | bfd_boolean filehdr, | |
4870 | bfd_boolean phdrs, | |
4871 | etree_type *at, | |
4872 | etree_type *flags) | |
252b5132 RH |
4873 | { |
4874 | struct lang_phdr *n, **pp; | |
4875 | ||
1579bae1 | 4876 | n = stat_alloc (sizeof (struct lang_phdr)); |
252b5132 RH |
4877 | n->next = NULL; |
4878 | n->name = name; | |
4879 | n->type = exp_get_value_int (type, 0, "program header type", | |
4880 | lang_final_phase_enum); | |
4881 | n->filehdr = filehdr; | |
4882 | n->phdrs = phdrs; | |
4883 | n->at = at; | |
4884 | n->flags = flags; | |
4885 | ||
4886 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4887 | ; | |
4888 | *pp = n; | |
4889 | } | |
4890 | ||
4891 | /* Record the program header information in the output BFD. FIXME: We | |
4892 | should not be calling an ELF specific function here. */ | |
4893 | ||
4894 | static void | |
1579bae1 | 4895 | lang_record_phdrs (void) |
252b5132 RH |
4896 | { |
4897 | unsigned int alc; | |
4898 | asection **secs; | |
6bdafbeb | 4899 | lang_output_section_phdr_list *last; |
252b5132 RH |
4900 | struct lang_phdr *l; |
4901 | lang_statement_union_type *u; | |
4902 | ||
4903 | alc = 10; | |
1579bae1 | 4904 | secs = xmalloc (alc * sizeof (asection *)); |
252b5132 RH |
4905 | last = NULL; |
4906 | for (l = lang_phdr_list; l != NULL; l = l->next) | |
4907 | { | |
4908 | unsigned int c; | |
4909 | flagword flags; | |
4910 | bfd_vma at; | |
4911 | ||
4912 | c = 0; | |
4913 | for (u = lang_output_section_statement.head; | |
4914 | u != NULL; | |
4915 | u = u->output_section_statement.next) | |
4916 | { | |
4917 | lang_output_section_statement_type *os; | |
6bdafbeb | 4918 | lang_output_section_phdr_list *pl; |
252b5132 RH |
4919 | |
4920 | os = &u->output_section_statement; | |
0841712e JJ |
4921 | if (os->constraint == -1) |
4922 | continue; | |
252b5132 RH |
4923 | |
4924 | pl = os->phdrs; | |
4925 | if (pl != NULL) | |
4926 | last = pl; | |
4927 | else | |
4928 | { | |
4929 | if (os->sectype == noload_section | |
4930 | || os->bfd_section == NULL | |
4931 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
4932 | continue; | |
4933 | pl = last; | |
4934 | } | |
4935 | ||
4936 | if (os->bfd_section == NULL) | |
4937 | continue; | |
4938 | ||
4939 | for (; pl != NULL; pl = pl->next) | |
4940 | { | |
4941 | if (strcmp (pl->name, l->name) == 0) | |
4942 | { | |
4943 | if (c >= alc) | |
4944 | { | |
4945 | alc *= 2; | |
1579bae1 | 4946 | secs = xrealloc (secs, alc * sizeof (asection *)); |
252b5132 RH |
4947 | } |
4948 | secs[c] = os->bfd_section; | |
4949 | ++c; | |
b34976b6 | 4950 | pl->used = TRUE; |
252b5132 RH |
4951 | } |
4952 | } | |
4953 | } | |
4954 | ||
4955 | if (l->flags == NULL) | |
4956 | flags = 0; | |
4957 | else | |
4958 | flags = exp_get_vma (l->flags, 0, "phdr flags", | |
4959 | lang_final_phase_enum); | |
4960 | ||
4961 | if (l->at == NULL) | |
4962 | at = 0; | |
4963 | else | |
4964 | at = exp_get_vma (l->at, 0, "phdr load address", | |
4965 | lang_final_phase_enum); | |
4966 | ||
4967 | if (! bfd_record_phdr (output_bfd, l->type, | |
d1778b88 | 4968 | l->flags != NULL, flags, l->at != NULL, |
252b5132 RH |
4969 | at, l->filehdr, l->phdrs, c, secs)) |
4970 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); | |
4971 | } | |
4972 | ||
4973 | free (secs); | |
4974 | ||
4975 | /* Make sure all the phdr assignments succeeded. */ | |
4976 | for (u = lang_output_section_statement.head; | |
4977 | u != NULL; | |
4978 | u = u->output_section_statement.next) | |
4979 | { | |
6bdafbeb | 4980 | lang_output_section_phdr_list *pl; |
252b5132 | 4981 | |
0841712e JJ |
4982 | if (u->output_section_statement.constraint == -1 |
4983 | || u->output_section_statement.bfd_section == NULL) | |
252b5132 RH |
4984 | continue; |
4985 | ||
4986 | for (pl = u->output_section_statement.phdrs; | |
4987 | pl != NULL; | |
4988 | pl = pl->next) | |
4989 | if (! pl->used && strcmp (pl->name, "NONE") != 0) | |
4990 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), | |
4991 | u->output_section_statement.name, pl->name); | |
4992 | } | |
4993 | } | |
4994 | ||
4995 | /* Record a list of sections which may not be cross referenced. */ | |
4996 | ||
4997 | void | |
6bdafbeb | 4998 | lang_add_nocrossref (lang_nocrossref_type *l) |
252b5132 RH |
4999 | { |
5000 | struct lang_nocrossrefs *n; | |
5001 | ||
1579bae1 | 5002 | n = xmalloc (sizeof *n); |
252b5132 RH |
5003 | n->next = nocrossref_list; |
5004 | n->list = l; | |
5005 | nocrossref_list = n; | |
5006 | ||
5007 | /* Set notice_all so that we get informed about all symbols. */ | |
b34976b6 | 5008 | link_info.notice_all = TRUE; |
252b5132 RH |
5009 | } |
5010 | \f | |
5011 | /* Overlay handling. We handle overlays with some static variables. */ | |
5012 | ||
5013 | /* The overlay virtual address. */ | |
5014 | static etree_type *overlay_vma; | |
7e7d5768 AM |
5015 | /* And subsection alignment. */ |
5016 | static etree_type *overlay_subalign; | |
252b5132 | 5017 | |
252b5132 RH |
5018 | /* An expression for the maximum section size seen so far. */ |
5019 | static etree_type *overlay_max; | |
5020 | ||
5021 | /* A list of all the sections in this overlay. */ | |
5022 | ||
89cdebba | 5023 | struct overlay_list { |
252b5132 RH |
5024 | struct overlay_list *next; |
5025 | lang_output_section_statement_type *os; | |
5026 | }; | |
5027 | ||
5028 | static struct overlay_list *overlay_list; | |
5029 | ||
5030 | /* Start handling an overlay. */ | |
5031 | ||
5032 | void | |
7e7d5768 | 5033 | lang_enter_overlay (etree_type *vma_expr, etree_type *subalign) |
252b5132 RH |
5034 | { |
5035 | /* The grammar should prevent nested overlays from occurring. */ | |
7e7d5768 AM |
5036 | ASSERT (overlay_vma == NULL |
5037 | && overlay_subalign == NULL | |
5038 | && overlay_max == NULL); | |
252b5132 RH |
5039 | |
5040 | overlay_vma = vma_expr; | |
7e7d5768 | 5041 | overlay_subalign = subalign; |
252b5132 RH |
5042 | } |
5043 | ||
5044 | /* Start a section in an overlay. We handle this by calling | |
9f88b410 RS |
5045 | lang_enter_output_section_statement with the correct VMA. |
5046 | lang_leave_overlay sets up the LMA and memory regions. */ | |
252b5132 RH |
5047 | |
5048 | void | |
1579bae1 | 5049 | lang_enter_overlay_section (const char *name) |
252b5132 RH |
5050 | { |
5051 | struct overlay_list *n; | |
5052 | etree_type *size; | |
5053 | ||
5054 | lang_enter_output_section_statement (name, overlay_vma, normal_section, | |
0841712e | 5055 | 0, overlay_subalign, 0, 0); |
252b5132 | 5056 | |
9f88b410 | 5057 | /* If this is the first section, then base the VMA of future |
252b5132 RH |
5058 | sections on this one. This will work correctly even if `.' is |
5059 | used in the addresses. */ | |
5060 | if (overlay_list == NULL) | |
9f88b410 | 5061 | overlay_vma = exp_nameop (ADDR, name); |
252b5132 RH |
5062 | |
5063 | /* Remember the section. */ | |
1579bae1 | 5064 | n = xmalloc (sizeof *n); |
252b5132 RH |
5065 | n->os = current_section; |
5066 | n->next = overlay_list; | |
5067 | overlay_list = n; | |
5068 | ||
5069 | size = exp_nameop (SIZEOF, name); | |
5070 | ||
252b5132 RH |
5071 | /* Arrange to work out the maximum section end address. */ |
5072 | if (overlay_max == NULL) | |
5073 | overlay_max = size; | |
5074 | else | |
5075 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
5076 | } | |
5077 | ||
5078 | /* Finish a section in an overlay. There isn't any special to do | |
5079 | here. */ | |
5080 | ||
5081 | void | |
1579bae1 | 5082 | lang_leave_overlay_section (fill_type *fill, |
6bdafbeb | 5083 | lang_output_section_phdr_list *phdrs) |
252b5132 RH |
5084 | { |
5085 | const char *name; | |
5086 | char *clean, *s2; | |
5087 | const char *s1; | |
5088 | char *buf; | |
5089 | ||
5090 | name = current_section->name; | |
5091 | ||
a747ee4d NC |
5092 | /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory |
5093 | region and that no load-time region has been specified. It doesn't | |
5094 | really matter what we say here, since lang_leave_overlay will | |
5095 | override it. */ | |
5096 | lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0); | |
252b5132 RH |
5097 | |
5098 | /* Define the magic symbols. */ | |
5099 | ||
5100 | clean = xmalloc (strlen (name) + 1); | |
5101 | s2 = clean; | |
5102 | for (s1 = name; *s1 != '\0'; s1++) | |
3882b010 | 5103 | if (ISALNUM (*s1) || *s1 == '_') |
252b5132 RH |
5104 | *s2++ = *s1; |
5105 | *s2 = '\0'; | |
5106 | ||
5107 | buf = xmalloc (strlen (clean) + sizeof "__load_start_"); | |
5108 | sprintf (buf, "__load_start_%s", clean); | |
5109 | lang_add_assignment (exp_assop ('=', buf, | |
5110 | exp_nameop (LOADADDR, name))); | |
5111 | ||
5112 | buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); | |
5113 | sprintf (buf, "__load_stop_%s", clean); | |
5114 | lang_add_assignment (exp_assop ('=', buf, | |
5115 | exp_binop ('+', | |
5116 | exp_nameop (LOADADDR, name), | |
5117 | exp_nameop (SIZEOF, name)))); | |
5118 | ||
5119 | free (clean); | |
5120 | } | |
5121 | ||
5122 | /* Finish an overlay. If there are any overlay wide settings, this | |
5123 | looks through all the sections in the overlay and sets them. */ | |
5124 | ||
5125 | void | |
1579bae1 AM |
5126 | lang_leave_overlay (etree_type *lma_expr, |
5127 | int nocrossrefs, | |
5128 | fill_type *fill, | |
5129 | const char *memspec, | |
6bdafbeb | 5130 | lang_output_section_phdr_list *phdrs, |
1579bae1 | 5131 | const char *lma_memspec) |
252b5132 RH |
5132 | { |
5133 | lang_memory_region_type *region; | |
562d3460 | 5134 | lang_memory_region_type *lma_region; |
252b5132 | 5135 | struct overlay_list *l; |
6bdafbeb | 5136 | lang_nocrossref_type *nocrossref; |
252b5132 | 5137 | |
ee3cc2e2 RS |
5138 | lang_get_regions (®ion, &lma_region, |
5139 | memspec, lma_memspec, | |
6bdafbeb | 5140 | lma_expr != NULL, FALSE); |
562d3460 | 5141 | |
252b5132 RH |
5142 | nocrossref = NULL; |
5143 | ||
9f88b410 RS |
5144 | /* After setting the size of the last section, set '.' to end of the |
5145 | overlay region. */ | |
5146 | if (overlay_list != NULL) | |
5147 | overlay_list->os->update_dot_tree | |
5148 | = exp_assop ('=', ".", exp_binop ('+', overlay_vma, overlay_max)); | |
5149 | ||
252b5132 RH |
5150 | l = overlay_list; |
5151 | while (l != NULL) | |
5152 | { | |
5153 | struct overlay_list *next; | |
5154 | ||
1579bae1 | 5155 | if (fill != NULL && l->os->fill == NULL) |
252b5132 | 5156 | l->os->fill = fill; |
1545243b | 5157 | |
9f88b410 RS |
5158 | l->os->region = region; |
5159 | l->os->lma_region = lma_region; | |
5160 | ||
5161 | /* The first section has the load address specified in the | |
5162 | OVERLAY statement. The rest are worked out from that. | |
5163 | The base address is not needed (and should be null) if | |
5164 | an LMA region was specified. */ | |
5165 | if (l->next == 0) | |
5166 | l->os->load_base = lma_expr; | |
5167 | else if (lma_region == 0) | |
5168 | l->os->load_base = exp_binop ('+', | |
5169 | exp_nameop (LOADADDR, l->next->os->name), | |
5170 | exp_nameop (SIZEOF, l->next->os->name)); | |
1545243b | 5171 | |
252b5132 RH |
5172 | if (phdrs != NULL && l->os->phdrs == NULL) |
5173 | l->os->phdrs = phdrs; | |
5174 | ||
9f88b410 | 5175 | if (nocrossrefs) |
252b5132 | 5176 | { |
6bdafbeb | 5177 | lang_nocrossref_type *nc; |
252b5132 | 5178 | |
1579bae1 | 5179 | nc = xmalloc (sizeof *nc); |
252b5132 RH |
5180 | nc->name = l->os->name; |
5181 | nc->next = nocrossref; | |
5182 | nocrossref = nc; | |
5183 | } | |
5184 | ||
5185 | next = l->next; | |
5186 | free (l); | |
5187 | l = next; | |
5188 | } | |
5189 | ||
5190 | if (nocrossref != NULL) | |
5191 | lang_add_nocrossref (nocrossref); | |
5192 | ||
252b5132 | 5193 | overlay_vma = NULL; |
252b5132 RH |
5194 | overlay_list = NULL; |
5195 | overlay_max = NULL; | |
5196 | } | |
5197 | \f | |
5198 | /* Version handling. This is only useful for ELF. */ | |
5199 | ||
5200 | /* This global variable holds the version tree that we build. */ | |
5201 | ||
5202 | struct bfd_elf_version_tree *lang_elf_version_info; | |
5203 | ||
108ba305 JJ |
5204 | /* If PREV is NULL, return first version pattern matching particular symbol. |
5205 | If PREV is non-NULL, return first version pattern matching particular | |
5206 | symbol after PREV (previously returned by lang_vers_match). */ | |
252b5132 | 5207 | |
108ba305 JJ |
5208 | static struct bfd_elf_version_expr * |
5209 | lang_vers_match (struct bfd_elf_version_expr_head *head, | |
5210 | struct bfd_elf_version_expr *prev, | |
5211 | const char *sym) | |
252b5132 | 5212 | { |
108ba305 JJ |
5213 | const char *cxx_sym = sym; |
5214 | const char *java_sym = sym; | |
5215 | struct bfd_elf_version_expr *expr = NULL; | |
252b5132 | 5216 | |
108ba305 | 5217 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) |
252b5132 | 5218 | { |
2f97444a | 5219 | cxx_sym = cplus_demangle (sym, DMGL_PARAMS | DMGL_ANSI); |
108ba305 JJ |
5220 | if (!cxx_sym) |
5221 | cxx_sym = sym; | |
252b5132 | 5222 | } |
df816215 | 5223 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) |
252b5132 | 5224 | { |
108ba305 JJ |
5225 | java_sym = cplus_demangle (sym, DMGL_JAVA); |
5226 | if (!java_sym) | |
5227 | java_sym = sym; | |
252b5132 RH |
5228 | } |
5229 | ||
5e35cbc2 | 5230 | if (head->htab && (prev == NULL || prev->symbol)) |
252b5132 | 5231 | { |
108ba305 JJ |
5232 | struct bfd_elf_version_expr e; |
5233 | ||
5234 | switch (prev ? prev->mask : 0) | |
5235 | { | |
5236 | case 0: | |
5237 | if (head->mask & BFD_ELF_VERSION_C_TYPE) | |
5238 | { | |
5e35cbc2 | 5239 | e.symbol = sym; |
108ba305 | 5240 | expr = htab_find (head->htab, &e); |
5e35cbc2 | 5241 | while (expr && strcmp (expr->symbol, sym) == 0) |
108ba305 JJ |
5242 | if (expr->mask == BFD_ELF_VERSION_C_TYPE) |
5243 | goto out_ret; | |
5244 | else | |
5245 | expr = expr->next; | |
5246 | } | |
5247 | /* Fallthrough */ | |
5248 | case BFD_ELF_VERSION_C_TYPE: | |
5249 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) | |
5250 | { | |
5e35cbc2 | 5251 | e.symbol = cxx_sym; |
108ba305 | 5252 | expr = htab_find (head->htab, &e); |
7a995eb3 | 5253 | while (expr && strcmp (expr->symbol, cxx_sym) == 0) |
108ba305 JJ |
5254 | if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) |
5255 | goto out_ret; | |
5256 | else | |
5257 | expr = expr->next; | |
5258 | } | |
5259 | /* Fallthrough */ | |
5260 | case BFD_ELF_VERSION_CXX_TYPE: | |
5261 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) | |
5262 | { | |
5e35cbc2 | 5263 | e.symbol = java_sym; |
108ba305 | 5264 | expr = htab_find (head->htab, &e); |
7a995eb3 | 5265 | while (expr && strcmp (expr->symbol, java_sym) == 0) |
108ba305 JJ |
5266 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) |
5267 | goto out_ret; | |
5268 | else | |
5269 | expr = expr->next; | |
5270 | } | |
5271 | /* Fallthrough */ | |
5272 | default: | |
5273 | break; | |
5274 | } | |
252b5132 | 5275 | } |
108ba305 JJ |
5276 | |
5277 | /* Finally, try the wildcards. */ | |
5e35cbc2 | 5278 | if (prev == NULL || prev->symbol) |
108ba305 | 5279 | expr = head->remaining; |
252b5132 | 5280 | else |
108ba305 JJ |
5281 | expr = prev->next; |
5282 | while (expr) | |
252b5132 | 5283 | { |
108ba305 JJ |
5284 | const char *s; |
5285 | ||
5286 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
5287 | break; | |
5288 | ||
5289 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) | |
5290 | s = java_sym; | |
5291 | else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) | |
5292 | s = cxx_sym; | |
5293 | else | |
5294 | s = sym; | |
5e35cbc2 | 5295 | if (fnmatch (expr->pattern, s, 0) == 0) |
108ba305 JJ |
5296 | break; |
5297 | expr = expr->next; | |
252b5132 RH |
5298 | } |
5299 | ||
108ba305 JJ |
5300 | out_ret: |
5301 | if (cxx_sym != sym) | |
5302 | free ((char *) cxx_sym); | |
5303 | if (java_sym != sym) | |
5304 | free ((char *) java_sym); | |
5305 | return expr; | |
252b5132 RH |
5306 | } |
5307 | ||
5e35cbc2 L |
5308 | /* Return NULL if the PATTERN argument is a glob pattern, otherwise, |
5309 | return a string pointing to the symbol name. */ | |
5310 | ||
5311 | static const char * | |
5312 | realsymbol (const char *pattern) | |
5313 | { | |
5314 | const char *p; | |
5315 | bfd_boolean changed = FALSE, backslash = FALSE; | |
5316 | char *s, *symbol = xmalloc (strlen (pattern) + 1); | |
5317 | ||
5318 | for (p = pattern, s = symbol; *p != '\0'; ++p) | |
5319 | { | |
5320 | /* It is a glob pattern only if there is no preceding | |
5321 | backslash. */ | |
5322 | if (! backslash && (*p == '?' || *p == '*' || *p == '[')) | |
5323 | { | |
5324 | free (symbol); | |
5325 | return NULL; | |
5326 | } | |
5327 | ||
5328 | if (backslash) | |
5329 | { | |
5330 | /* Remove the preceding backslash. */ | |
5331 | *(s - 1) = *p; | |
5332 | changed = TRUE; | |
5333 | } | |
5334 | else | |
5335 | *s++ = *p; | |
5336 | ||
5337 | backslash = *p == '\\'; | |
5338 | } | |
5339 | ||
5340 | if (changed) | |
5341 | { | |
5342 | *s = '\0'; | |
5343 | return symbol; | |
5344 | } | |
5345 | else | |
5346 | { | |
5347 | free (symbol); | |
5348 | return pattern; | |
5349 | } | |
5350 | } | |
5351 | ||
252b5132 RH |
5352 | /* This is called for each variable name or match expression. */ |
5353 | ||
5354 | struct bfd_elf_version_expr * | |
1579bae1 AM |
5355 | lang_new_vers_pattern (struct bfd_elf_version_expr *orig, |
5356 | const char *new, | |
5357 | const char *lang) | |
252b5132 RH |
5358 | { |
5359 | struct bfd_elf_version_expr *ret; | |
5360 | ||
1579bae1 | 5361 | ret = xmalloc (sizeof *ret); |
252b5132 RH |
5362 | ret->next = orig; |
5363 | ret->pattern = new; | |
31941635 L |
5364 | ret->symver = 0; |
5365 | ret->script = 0; | |
5e35cbc2 | 5366 | ret->symbol = realsymbol (new); |
252b5132 RH |
5367 | |
5368 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
108ba305 | 5369 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 | 5370 | else if (strcasecmp (lang, "C++") == 0) |
108ba305 | 5371 | ret->mask = BFD_ELF_VERSION_CXX_TYPE; |
252b5132 | 5372 | else if (strcasecmp (lang, "Java") == 0) |
108ba305 | 5373 | ret->mask = BFD_ELF_VERSION_JAVA_TYPE; |
252b5132 RH |
5374 | else |
5375 | { | |
5376 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
5377 | lang); | |
108ba305 | 5378 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 RH |
5379 | } |
5380 | ||
fac1652d | 5381 | return ldemul_new_vers_pattern (ret); |
252b5132 RH |
5382 | } |
5383 | ||
5384 | /* This is called for each set of variable names and match | |
5385 | expressions. */ | |
5386 | ||
5387 | struct bfd_elf_version_tree * | |
1579bae1 AM |
5388 | lang_new_vers_node (struct bfd_elf_version_expr *globals, |
5389 | struct bfd_elf_version_expr *locals) | |
252b5132 RH |
5390 | { |
5391 | struct bfd_elf_version_tree *ret; | |
5392 | ||
108ba305 JJ |
5393 | ret = xcalloc (1, sizeof *ret); |
5394 | ret->globals.list = globals; | |
5395 | ret->locals.list = locals; | |
5396 | ret->match = lang_vers_match; | |
252b5132 | 5397 | ret->name_indx = (unsigned int) -1; |
252b5132 RH |
5398 | return ret; |
5399 | } | |
5400 | ||
5401 | /* This static variable keeps track of version indices. */ | |
5402 | ||
5403 | static int version_index; | |
5404 | ||
108ba305 JJ |
5405 | static hashval_t |
5406 | version_expr_head_hash (const void *p) | |
5407 | { | |
5408 | const struct bfd_elf_version_expr *e = p; | |
5409 | ||
5e35cbc2 | 5410 | return htab_hash_string (e->symbol); |
108ba305 JJ |
5411 | } |
5412 | ||
5413 | static int | |
5414 | version_expr_head_eq (const void *p1, const void *p2) | |
5415 | { | |
5416 | const struct bfd_elf_version_expr *e1 = p1; | |
5417 | const struct bfd_elf_version_expr *e2 = p2; | |
5418 | ||
5e35cbc2 | 5419 | return strcmp (e1->symbol, e2->symbol) == 0; |
108ba305 JJ |
5420 | } |
5421 | ||
5422 | static void | |
5423 | lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head) | |
5424 | { | |
5425 | size_t count = 0; | |
5426 | struct bfd_elf_version_expr *e, *next; | |
5427 | struct bfd_elf_version_expr **list_loc, **remaining_loc; | |
5428 | ||
5429 | for (e = head->list; e; e = e->next) | |
5430 | { | |
5e35cbc2 | 5431 | if (e->symbol) |
108ba305 JJ |
5432 | count++; |
5433 | head->mask |= e->mask; | |
5434 | } | |
5435 | ||
5436 | if (count) | |
5437 | { | |
5438 | head->htab = htab_create (count * 2, version_expr_head_hash, | |
5439 | version_expr_head_eq, NULL); | |
5440 | list_loc = &head->list; | |
5441 | remaining_loc = &head->remaining; | |
5442 | for (e = head->list; e; e = next) | |
5443 | { | |
5444 | next = e->next; | |
5e35cbc2 | 5445 | if (!e->symbol) |
108ba305 JJ |
5446 | { |
5447 | *remaining_loc = e; | |
5448 | remaining_loc = &e->next; | |
5449 | } | |
5450 | else | |
5451 | { | |
5452 | void **loc = htab_find_slot (head->htab, e, INSERT); | |
5453 | ||
5454 | if (*loc) | |
5455 | { | |
5456 | struct bfd_elf_version_expr *e1, *last; | |
5457 | ||
5458 | e1 = *loc; | |
5459 | last = NULL; | |
5460 | do | |
5461 | { | |
5462 | if (e1->mask == e->mask) | |
5463 | { | |
5464 | last = NULL; | |
5465 | break; | |
5466 | } | |
5467 | last = e1; | |
5468 | e1 = e1->next; | |
5469 | } | |
5e35cbc2 | 5470 | while (e1 && strcmp (e1->symbol, e->symbol) == 0); |
108ba305 JJ |
5471 | |
5472 | if (last == NULL) | |
5473 | { | |
5474 | /* This is a duplicate. */ | |
5475 | /* FIXME: Memory leak. Sometimes pattern is not | |
5476 | xmalloced alone, but in larger chunk of memory. */ | |
5e35cbc2 | 5477 | /* free (e->symbol); */ |
108ba305 JJ |
5478 | free (e); |
5479 | } | |
5480 | else | |
5481 | { | |
5482 | e->next = last->next; | |
5483 | last->next = e; | |
5484 | } | |
5485 | } | |
5486 | else | |
5487 | { | |
5488 | *loc = e; | |
5489 | *list_loc = e; | |
5490 | list_loc = &e->next; | |
5491 | } | |
5492 | } | |
5493 | } | |
5494 | *remaining_loc = NULL; | |
5495 | *list_loc = head->remaining; | |
5496 | } | |
5497 | else | |
5498 | head->remaining = head->list; | |
5499 | } | |
5500 | ||
252b5132 RH |
5501 | /* This is called when we know the name and dependencies of the |
5502 | version. */ | |
5503 | ||
5504 | void | |
1579bae1 AM |
5505 | lang_register_vers_node (const char *name, |
5506 | struct bfd_elf_version_tree *version, | |
5507 | struct bfd_elf_version_deps *deps) | |
252b5132 RH |
5508 | { |
5509 | struct bfd_elf_version_tree *t, **pp; | |
5510 | struct bfd_elf_version_expr *e1; | |
5511 | ||
6b9b879a JJ |
5512 | if (name == NULL) |
5513 | name = ""; | |
5514 | ||
5515 | if ((name[0] == '\0' && lang_elf_version_info != NULL) | |
5516 | || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0')) | |
5517 | { | |
6feb9908 AM |
5518 | einfo (_("%X%P: anonymous version tag cannot be combined" |
5519 | " with other version tags\n")); | |
5ed6aba4 | 5520 | free (version); |
6b9b879a JJ |
5521 | return; |
5522 | } | |
5523 | ||
252b5132 RH |
5524 | /* Make sure this node has a unique name. */ |
5525 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5526 | if (strcmp (t->name, name) == 0) | |
5527 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
5528 | ||
108ba305 JJ |
5529 | lang_finalize_version_expr_head (&version->globals); |
5530 | lang_finalize_version_expr_head (&version->locals); | |
5531 | ||
252b5132 RH |
5532 | /* Check the global and local match names, and make sure there |
5533 | aren't any duplicates. */ | |
5534 | ||
108ba305 | 5535 | for (e1 = version->globals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
5536 | { |
5537 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5538 | { | |
5539 | struct bfd_elf_version_expr *e2; | |
5540 | ||
5e35cbc2 | 5541 | if (t->locals.htab && e1->symbol) |
108ba305 JJ |
5542 | { |
5543 | e2 = htab_find (t->locals.htab, e1); | |
5e35cbc2 | 5544 | while (e2 && strcmp (e1->symbol, e2->symbol) == 0) |
108ba305 JJ |
5545 | { |
5546 | if (e1->mask == e2->mask) | |
6feb9908 AM |
5547 | einfo (_("%X%P: duplicate expression `%s'" |
5548 | " in version information\n"), e1->symbol); | |
108ba305 JJ |
5549 | e2 = e2->next; |
5550 | } | |
5551 | } | |
5e35cbc2 | 5552 | else if (!e1->symbol) |
108ba305 | 5553 | for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
5554 | if (strcmp (e1->pattern, e2->pattern) == 0 |
5555 | && e1->mask == e2->mask) | |
5556 | einfo (_("%X%P: duplicate expression `%s'" | |
5557 | " in version information\n"), e1->pattern); | |
252b5132 RH |
5558 | } |
5559 | } | |
5560 | ||
108ba305 | 5561 | for (e1 = version->locals.list; e1 != NULL; e1 = e1->next) |
252b5132 RH |
5562 | { |
5563 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5564 | { | |
5565 | struct bfd_elf_version_expr *e2; | |
5566 | ||
5e35cbc2 | 5567 | if (t->globals.htab && e1->symbol) |
108ba305 JJ |
5568 | { |
5569 | e2 = htab_find (t->globals.htab, e1); | |
5e35cbc2 | 5570 | while (e2 && strcmp (e1->symbol, e2->symbol) == 0) |
108ba305 JJ |
5571 | { |
5572 | if (e1->mask == e2->mask) | |
6feb9908 AM |
5573 | einfo (_("%X%P: duplicate expression `%s'" |
5574 | " in version information\n"), | |
5e35cbc2 | 5575 | e1->symbol); |
108ba305 JJ |
5576 | e2 = e2->next; |
5577 | } | |
5578 | } | |
5e35cbc2 | 5579 | else if (!e1->symbol) |
108ba305 | 5580 | for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
5581 | if (strcmp (e1->pattern, e2->pattern) == 0 |
5582 | && e1->mask == e2->mask) | |
5583 | einfo (_("%X%P: duplicate expression `%s'" | |
5584 | " in version information\n"), e1->pattern); | |
252b5132 RH |
5585 | } |
5586 | } | |
5587 | ||
5588 | version->deps = deps; | |
5589 | version->name = name; | |
6b9b879a JJ |
5590 | if (name[0] != '\0') |
5591 | { | |
5592 | ++version_index; | |
5593 | version->vernum = version_index; | |
5594 | } | |
5595 | else | |
5596 | version->vernum = 0; | |
252b5132 RH |
5597 | |
5598 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) | |
5599 | ; | |
5600 | *pp = version; | |
5601 | } | |
5602 | ||
5603 | /* This is called when we see a version dependency. */ | |
5604 | ||
5605 | struct bfd_elf_version_deps * | |
1579bae1 | 5606 | lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name) |
252b5132 RH |
5607 | { |
5608 | struct bfd_elf_version_deps *ret; | |
5609 | struct bfd_elf_version_tree *t; | |
5610 | ||
1579bae1 | 5611 | ret = xmalloc (sizeof *ret); |
252b5132 RH |
5612 | ret->next = list; |
5613 | ||
5614 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5615 | { | |
5616 | if (strcmp (t->name, name) == 0) | |
5617 | { | |
5618 | ret->version_needed = t; | |
5619 | return ret; | |
5620 | } | |
5621 | } | |
5622 | ||
5623 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
5624 | ||
5625 | return ret; | |
5626 | } | |
5627 | ||
5628 | static void | |
1579bae1 | 5629 | lang_do_version_exports_section (void) |
252b5132 RH |
5630 | { |
5631 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
5632 | ||
5633 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
5634 | { | |
5635 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
5636 | char *contents, *p; | |
5637 | bfd_size_type len; | |
5638 | ||
5639 | if (sec == NULL) | |
b7a26f91 | 5640 | continue; |
252b5132 RH |
5641 | |
5642 | len = bfd_section_size (is->the_bfd, sec); | |
5643 | contents = xmalloc (len); | |
5644 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) | |
6f9efd97 | 5645 | einfo (_("%X%P: unable to read .exports section contents\n"), sec); |
252b5132 RH |
5646 | |
5647 | p = contents; | |
89cdebba | 5648 | while (p < contents + len) |
252b5132 | 5649 | { |
313e35ee | 5650 | greg = lang_new_vers_pattern (greg, p, NULL); |
252b5132 RH |
5651 | p = strchr (p, '\0') + 1; |
5652 | } | |
5653 | ||
5654 | /* Do not free the contents, as we used them creating the regex. */ | |
5655 | ||
5656 | /* Do not include this section in the link. */ | |
6feb9908 | 5657 | sec->flags |= SEC_EXCLUDE; |
252b5132 RH |
5658 | } |
5659 | ||
313e35ee | 5660 | lreg = lang_new_vers_pattern (NULL, "*", NULL); |
252b5132 RH |
5661 | lang_register_vers_node (command_line.version_exports_section, |
5662 | lang_new_vers_node (greg, lreg), NULL); | |
5663 | } | |
577a0623 AM |
5664 | |
5665 | void | |
1579bae1 | 5666 | lang_add_unique (const char *name) |
577a0623 AM |
5667 | { |
5668 | struct unique_sections *ent; | |
5669 | ||
5670 | for (ent = unique_section_list; ent; ent = ent->next) | |
5671 | if (strcmp (ent->name, name) == 0) | |
5672 | return; | |
5673 | ||
1579bae1 | 5674 | ent = xmalloc (sizeof *ent); |
577a0623 AM |
5675 | ent->name = xstrdup (name); |
5676 | ent->next = unique_section_list; | |
5677 | unique_section_list = ent; | |
5678 | } |