Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
577a0623 | 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GLD, the Gnu Linker. | |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libiberty.h" | |
25 | #include "obstack.h" | |
26 | #include "bfdlink.h" | |
27 | ||
28 | #include "ld.h" | |
29 | #include "ldmain.h" | |
30 | #include "ldgram.h" | |
31 | #include "ldexp.h" | |
32 | #include "ldlang.h" | |
252b5132 RH |
33 | #include "ldlex.h" |
34 | #include "ldmisc.h" | |
35 | #include "ldctor.h" | |
36 | #include "ldfile.h" | |
b71e2778 | 37 | #include "ldemul.h" |
252b5132 RH |
38 | #include "fnmatch.h" |
39 | #include "demangle.h" | |
40 | ||
41 | #include <ctype.h> | |
42 | ||
43 | /* FORWARDS */ | |
44 | static lang_statement_union_type *new_statement PARAMS ((enum statement_enum, | |
45 | size_t, | |
89cdebba | 46 | lang_statement_list_type *)); |
252b5132 | 47 | |
252b5132 RH |
48 | /* LOCALS */ |
49 | static struct obstack stat_obstack; | |
50 | ||
51 | #define obstack_chunk_alloc xmalloc | |
52 | #define obstack_chunk_free free | |
5f992e62 | 53 | static const char *startup_file; |
252b5132 RH |
54 | static lang_statement_list_type input_file_chain; |
55 | static boolean placed_commons = false; | |
56 | static lang_output_section_statement_type *default_common_section; | |
57 | static boolean map_option_f; | |
58 | static bfd_vma print_dot; | |
59 | static lang_input_statement_type *first_file; | |
5f992e62 AM |
60 | static const char *current_target; |
61 | static const char *output_target; | |
252b5132 RH |
62 | static lang_statement_list_type statement_list; |
63 | static struct lang_phdr *lang_phdr_list; | |
64 | ||
65 | static void lang_for_each_statement_worker | |
5f992e62 AM |
66 | PARAMS ((void (*) (lang_statement_union_type *), |
67 | lang_statement_union_type *)); | |
252b5132 | 68 | static lang_input_statement_type *new_afile |
5f992e62 AM |
69 | PARAMS ((const char *, lang_input_file_enum_type, const char *, boolean)); |
70 | static lang_memory_region_type *lang_memory_default PARAMS ((asection *)); | |
71 | static void lang_map_flags PARAMS ((flagword)); | |
72 | static void init_os PARAMS ((lang_output_section_statement_type *)); | |
252b5132 RH |
73 | static void exp_init_os PARAMS ((etree_type *)); |
74 | static void section_already_linked PARAMS ((bfd *, asection *, PTR)); | |
9503fd87 | 75 | static struct bfd_hash_entry *already_linked_newfunc |
5f992e62 | 76 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
9503fd87 ILT |
77 | static void already_linked_table_init PARAMS ((void)); |
78 | static void already_linked_table_free PARAMS ((void)); | |
252b5132 RH |
79 | static boolean wildcardp PARAMS ((const char *)); |
80 | static lang_statement_union_type *wild_sort | |
81 | PARAMS ((lang_wild_statement_type *, lang_input_statement_type *, | |
82 | asection *)); | |
5f992e62 AM |
83 | static void output_section_callback |
84 | PARAMS ((lang_wild_statement_type *, asection *, | |
85 | lang_input_statement_type *, PTR)); | |
86 | static lang_input_statement_type *lookup_name PARAMS ((const char *)); | |
87 | static void load_symbols | |
88 | PARAMS ((lang_input_statement_type *, lang_statement_list_type *)); | |
89 | static void wild | |
90 | PARAMS ((lang_wild_statement_type *, const char *, const char *, | |
91 | const char *, lang_output_section_statement_type *)); | |
92 | static bfd *open_output PARAMS ((const char *)); | |
93 | static void ldlang_open_output PARAMS ((lang_statement_union_type *)); | |
94 | static void open_input_bfds PARAMS ((lang_statement_union_type *, boolean)); | |
252b5132 RH |
95 | static void lang_reasonable_defaults PARAMS ((void)); |
96 | static void lang_place_undefineds PARAMS ((void)); | |
97 | static void map_input_to_output_sections | |
5f992e62 AM |
98 | PARAMS ((lang_statement_union_type *, const char *, |
99 | lang_output_section_statement_type *)); | |
252b5132 | 100 | static void print_output_section_statement |
5f992e62 | 101 | PARAMS ((lang_output_section_statement_type *)); |
252b5132 | 102 | static void print_assignment |
5f992e62 AM |
103 | PARAMS ((lang_assignment_statement_type *, |
104 | lang_output_section_statement_type *)); | |
105 | static void print_input_statement PARAMS ((lang_input_statement_type *)); | |
252b5132 | 106 | static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR)); |
5f992e62 AM |
107 | static void print_input_section PARAMS ((lang_input_section_type *)); |
108 | static void print_fill_statement PARAMS ((lang_fill_statement_type *)); | |
109 | static void print_data_statement PARAMS ((lang_data_statement_type *)); | |
252b5132 | 110 | static void print_address_statement PARAMS ((lang_address_statement_type *)); |
5f992e62 AM |
111 | static void print_reloc_statement PARAMS ((lang_reloc_statement_type *)); |
112 | static void print_padding_statement PARAMS ((lang_padding_statement_type *)); | |
252b5132 | 113 | static void print_wild_statement |
5f992e62 | 114 | PARAMS ((lang_wild_statement_type *, lang_output_section_statement_type *)); |
252b5132 RH |
115 | static void print_group |
116 | PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *)); | |
5f992e62 AM |
117 | static void print_statement |
118 | PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *)); | |
119 | static void print_statement_list | |
120 | PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *)); | |
252b5132 | 121 | static void print_statements PARAMS ((void)); |
5f992e62 | 122 | static bfd_vma insert_pad |
2be3aa03 NC |
123 | PARAMS ((lang_statement_union_type **, fill_type, |
124 | unsigned int, asection *, bfd_vma)); | |
252b5132 | 125 | static bfd_vma size_input_section |
2be3aa03 NC |
126 | PARAMS ((lang_statement_union_type **, lang_output_section_statement_type *, |
127 | fill_type, bfd_vma, boolean)); | |
252b5132 RH |
128 | static void lang_finish PARAMS ((void)); |
129 | static void ignore_bfd_errors PARAMS ((const char *, ...)); | |
130 | static void lang_check PARAMS ((void)); | |
131 | static void lang_common PARAMS ((void)); | |
132 | static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR)); | |
133 | static void lang_place_orphans PARAMS ((void)); | |
134 | static int topower PARAMS ((int)); | |
135 | static void lang_set_startof PARAMS ((void)); | |
136 | static void reset_memory_regions PARAMS ((void)); | |
5f992e62 AM |
137 | static void gc_section_callback |
138 | PARAMS ((lang_wild_statement_type *, asection *, | |
139 | lang_input_statement_type *, PTR)); | |
252b5132 | 140 | static void lang_record_phdrs PARAMS ((void)); |
252b5132 RH |
141 | static void lang_gc_wild |
142 | PARAMS ((lang_wild_statement_type *, const char *, const char *)); | |
143 | static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *)); | |
144 | static void lang_gc_sections PARAMS ((void)); | |
5f992e62 AM |
145 | static int lang_vers_match_lang_c |
146 | PARAMS ((struct bfd_elf_version_expr *, const char *)); | |
147 | static int lang_vers_match_lang_cplusplus | |
148 | PARAMS ((struct bfd_elf_version_expr *, const char *)); | |
149 | static int lang_vers_match_lang_java | |
150 | PARAMS ((struct bfd_elf_version_expr *, const char *)); | |
252b5132 RH |
151 | static void lang_do_version_exports_section PARAMS ((void)); |
152 | static void lang_check_section_addresses PARAMS ((void)); | |
5f992e62 AM |
153 | static void os_region_check |
154 | PARAMS ((lang_output_section_statement_type *, | |
155 | struct memory_region_struct *, etree_type *, bfd_vma)); | |
252b5132 | 156 | |
4dec4d4e RH |
157 | typedef void (*callback_t) PARAMS ((lang_wild_statement_type *, |
158 | asection *, lang_input_statement_type *, | |
5f992e62 AM |
159 | PTR)); |
160 | static void walk_wild | |
161 | PARAMS ((lang_wild_statement_type *, const char *, const char *, | |
162 | callback_t, PTR)); | |
4dec4d4e RH |
163 | static void walk_wild_section |
164 | PARAMS ((lang_wild_statement_type *, const char *, | |
5f992e62 | 165 | lang_input_statement_type *, callback_t, PTR)); |
4dec4d4e RH |
166 | static void walk_wild_file |
167 | PARAMS ((lang_wild_statement_type *, const char *, | |
5f992e62 | 168 | lang_input_statement_type *, callback_t, PTR)); |
e50d8076 | 169 | |
5f992e62 | 170 | static int get_target PARAMS ((const bfd_target *, PTR)); |
e50d8076 NC |
171 | static void stricpy PARAMS ((char *, char *)); |
172 | static void strcut PARAMS ((char *, char *)); | |
173 | static int name_compare PARAMS ((char *, char *)); | |
5f992e62 | 174 | static int closest_target_match PARAMS ((const bfd_target *, PTR)); |
e50d8076 | 175 | static char * get_first_input_target PARAMS ((void)); |
5f992e62 | 176 | |
252b5132 RH |
177 | /* EXPORTS */ |
178 | lang_output_section_statement_type *abs_output_section; | |
aea4bd9d | 179 | lang_statement_list_type lang_output_section_statement; |
252b5132 | 180 | lang_statement_list_type *stat_ptr = &statement_list; |
87f2a346 | 181 | lang_statement_list_type file_chain = { NULL, NULL }; |
252b5132 RH |
182 | const char *entry_symbol = NULL; |
183 | boolean entry_from_cmdline; | |
184 | boolean lang_has_input_file = false; | |
185 | boolean had_output_filename = false; | |
186 | boolean lang_float_flag = false; | |
187 | boolean delete_output_file_on_failure = false; | |
188 | struct lang_nocrossrefs *nocrossref_list; | |
577a0623 | 189 | struct unique_sections *unique_section_list; |
252b5132 RH |
190 | |
191 | etree_type *base; /* Relocation base - or null */ | |
192 | ||
252b5132 RH |
193 | #if defined(__STDC__) || defined(ALMOST_STDC) |
194 | #define cat(a,b) a##b | |
195 | #else | |
196 | #define cat(a,b) a/**/b | |
197 | #endif | |
198 | ||
037849a9 NC |
199 | /* Don't beautify the line below with "innocent" whitespace, it breaks the K&R C preprocessor! */ |
200 | #define new_stat(x, y) (cat (x,_type)*) new_statement (cat (x,_enum), sizeof (cat (x,_type)), y) | |
252b5132 | 201 | |
08da4cac | 202 | #define outside_section_address(q) ((q)->output_offset + (q)->output_section->vma) |
252b5132 | 203 | |
2be3aa03 | 204 | #define outside_symbol_address(q) ((q)->value + outside_section_address (q->section)) |
252b5132 RH |
205 | |
206 | #define SECTION_NAME_MAP_LENGTH (16) | |
207 | ||
208 | PTR | |
209 | stat_alloc (size) | |
210 | size_t size; | |
211 | { | |
212 | return obstack_alloc (&stat_obstack, size); | |
213 | } | |
214 | ||
577a0623 AM |
215 | boolean |
216 | unique_section_p (secnam) | |
217 | const char *secnam; | |
218 | { | |
219 | struct unique_sections *unam; | |
220 | ||
221 | for (unam = unique_section_list; unam; unam = unam->next) | |
222 | if (wildcardp (unam->name) | |
223 | ? fnmatch (unam->name, secnam, 0) == 0 | |
224 | : strcmp (unam->name, secnam) == 0) | |
225 | { | |
226 | return true; | |
227 | } | |
228 | ||
229 | return false; | |
230 | } | |
231 | ||
08da4cac | 232 | /* Generic traversal routines for finding matching sections. */ |
4dec4d4e RH |
233 | |
234 | static void | |
235 | walk_wild_section (ptr, section, file, callback, data) | |
236 | lang_wild_statement_type *ptr; | |
237 | const char *section; | |
238 | lang_input_statement_type *file; | |
239 | callback_t callback; | |
5f992e62 | 240 | PTR data; |
4dec4d4e | 241 | { |
4de2d33d | 242 | /* Don't process sections from files which were excluded. */ |
18625d54 | 243 | if (ptr->exclude_filename_list != NULL) |
4dec4d4e | 244 | { |
18625d54 CM |
245 | struct name_list *list_tmp; |
246 | for (list_tmp = ptr->exclude_filename_list; list_tmp; list_tmp = list_tmp->next) | |
08da4cac | 247 | { |
18625d54 | 248 | boolean match; |
4dec4d4e | 249 | |
18625d54 CM |
250 | if (wildcardp (list_tmp->name)) |
251 | match = fnmatch (list_tmp->name, file->filename, 0) == 0 ? true : false; | |
252 | else | |
253 | match = strcmp (list_tmp->name, file->filename) == 0 ? true : false; | |
4dec4d4e | 254 | |
18625d54 CM |
255 | if (match) |
256 | return; | |
257 | } | |
4dec4d4e RH |
258 | } |
259 | ||
260 | if (file->just_syms_flag == false) | |
261 | { | |
262 | register asection *s; | |
577a0623 | 263 | boolean wildcard = false; |
4dec4d4e | 264 | |
577a0623 | 265 | if (section != NULL) |
4dec4d4e RH |
266 | wildcard = wildcardp (section); |
267 | ||
268 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
269 | { | |
270 | boolean match; | |
577a0623 | 271 | const char *sname = bfd_get_section_name (file->the_bfd, s); |
4dec4d4e RH |
272 | |
273 | if (section == NULL) | |
274 | match = true; | |
577a0623 AM |
275 | else if (wildcard) |
276 | match = fnmatch (section, sname, 0) == 0 ? true : false; | |
4dec4d4e | 277 | else |
577a0623 | 278 | match = strcmp (section, sname) == 0 ? true : false; |
4dec4d4e | 279 | |
577a0623 AM |
280 | /* If this is a wild-card output section statement, exclude |
281 | sections that match UNIQUE_SECTION_LIST. */ | |
282 | if (match && (data == NULL || !unique_section_p (sname))) | |
4dec4d4e RH |
283 | (*callback) (ptr, s, file, data); |
284 | } | |
285 | } | |
286 | } | |
287 | ||
288 | /* Handle a wild statement for a single file F. */ | |
289 | ||
290 | static void | |
291 | walk_wild_file (s, section, f, callback, data) | |
292 | lang_wild_statement_type *s; | |
293 | const char *section; | |
294 | lang_input_statement_type *f; | |
295 | callback_t callback; | |
5f992e62 | 296 | PTR data; |
4dec4d4e RH |
297 | { |
298 | if (f->the_bfd == NULL | |
299 | || ! bfd_check_format (f->the_bfd, bfd_archive)) | |
300 | walk_wild_section (s, section, f, callback, data); | |
301 | else | |
302 | { | |
303 | bfd *member; | |
304 | ||
305 | /* This is an archive file. We must map each member of the | |
306 | archive separately. */ | |
307 | member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL); | |
308 | while (member != NULL) | |
309 | { | |
310 | /* When lookup_name is called, it will call the add_symbols | |
311 | entry point for the archive. For each element of the | |
312 | archive which is included, BFD will call ldlang_add_file, | |
313 | which will set the usrdata field of the member to the | |
314 | lang_input_statement. */ | |
315 | if (member->usrdata != NULL) | |
316 | { | |
317 | walk_wild_section (s, section, | |
318 | (lang_input_statement_type *) member->usrdata, | |
319 | callback, data); | |
320 | } | |
321 | ||
322 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | static void | |
328 | walk_wild (s, section, file, callback, data) | |
329 | lang_wild_statement_type *s; | |
330 | const char *section; | |
331 | const char *file; | |
332 | callback_t callback; | |
5f992e62 | 333 | PTR data; |
4dec4d4e | 334 | { |
4dec4d4e RH |
335 | if (file == (char *) NULL) |
336 | { | |
337 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 338 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e RH |
339 | { |
340 | walk_wild_file (s, section, f, callback, data); | |
341 | } | |
342 | } | |
343 | else if (wildcardp (file)) | |
344 | { | |
e50d8076 | 345 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e RH |
346 | { |
347 | if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0) | |
348 | walk_wild_file (s, section, f, callback, data); | |
349 | } | |
350 | } | |
351 | else | |
352 | { | |
e50d8076 NC |
353 | lang_input_statement_type *f; |
354 | ||
4dec4d4e RH |
355 | /* Perform the iteration over a single file. */ |
356 | f = lookup_name (file); | |
357 | walk_wild_file (s, section, f, callback, data); | |
358 | } | |
5f992e62 AM |
359 | } |
360 | ||
08da4cac KH |
361 | /* lang_for_each_statement walks the parse tree and calls the provided |
362 | function for each node. */ | |
252b5132 RH |
363 | |
364 | static void | |
365 | lang_for_each_statement_worker (func, s) | |
366 | void (*func) PARAMS ((lang_statement_union_type *)); | |
367 | lang_statement_union_type *s; | |
368 | { | |
369 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
370 | { | |
371 | func (s); | |
372 | ||
373 | switch (s->header.type) | |
374 | { | |
375 | case lang_constructors_statement_enum: | |
376 | lang_for_each_statement_worker (func, constructor_list.head); | |
377 | break; | |
378 | case lang_output_section_statement_enum: | |
379 | lang_for_each_statement_worker | |
380 | (func, | |
381 | s->output_section_statement.children.head); | |
382 | break; | |
383 | case lang_wild_statement_enum: | |
384 | lang_for_each_statement_worker | |
385 | (func, | |
386 | s->wild_statement.children.head); | |
387 | break; | |
388 | case lang_group_statement_enum: | |
389 | lang_for_each_statement_worker (func, | |
390 | s->group_statement.children.head); | |
391 | break; | |
392 | case lang_data_statement_enum: | |
393 | case lang_reloc_statement_enum: | |
394 | case lang_object_symbols_statement_enum: | |
395 | case lang_output_statement_enum: | |
396 | case lang_target_statement_enum: | |
397 | case lang_input_section_enum: | |
398 | case lang_input_statement_enum: | |
399 | case lang_assignment_statement_enum: | |
400 | case lang_padding_statement_enum: | |
401 | case lang_address_statement_enum: | |
402 | case lang_fill_statement_enum: | |
403 | break; | |
404 | default: | |
405 | FAIL (); | |
406 | break; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
411 | void | |
412 | lang_for_each_statement (func) | |
413 | void (*func) PARAMS ((lang_statement_union_type *)); | |
414 | { | |
08da4cac | 415 | lang_for_each_statement_worker (func, statement_list.head); |
252b5132 RH |
416 | } |
417 | ||
418 | /*----------------------------------------------------------------------*/ | |
08da4cac | 419 | |
252b5132 RH |
420 | void |
421 | lang_list_init (list) | |
422 | lang_statement_list_type *list; | |
423 | { | |
424 | list->head = (lang_statement_union_type *) NULL; | |
425 | list->tail = &list->head; | |
426 | } | |
427 | ||
08da4cac | 428 | /* Build a new statement node for the parse tree. */ |
252b5132 | 429 | |
08da4cac | 430 | static lang_statement_union_type * |
252b5132 RH |
431 | new_statement (type, size, list) |
432 | enum statement_enum type; | |
433 | size_t size; | |
08da4cac | 434 | lang_statement_list_type *list; |
252b5132 RH |
435 | { |
436 | lang_statement_union_type *new = (lang_statement_union_type *) | |
437 | stat_alloc (size); | |
438 | ||
439 | new->header.type = type; | |
440 | new->header.next = (lang_statement_union_type *) NULL; | |
441 | lang_statement_append (list, new, &new->header.next); | |
442 | return new; | |
443 | } | |
444 | ||
08da4cac KH |
445 | /* Build a new input file node for the language. There are several |
446 | ways in which we treat an input file, eg, we only look at symbols, | |
447 | or prefix it with a -l etc. | |
252b5132 | 448 | |
08da4cac KH |
449 | We can be supplied with requests for input files more than once; |
450 | they may, for example be split over serveral lines like foo.o(.text) | |
451 | foo.o(.data) etc, so when asked for a file we check that we havn't | |
452 | got it already so we don't duplicate the bfd. */ | |
252b5132 | 453 | |
252b5132 RH |
454 | static lang_input_statement_type * |
455 | new_afile (name, file_type, target, add_to_list) | |
5f992e62 | 456 | const char *name; |
252b5132 | 457 | lang_input_file_enum_type file_type; |
5f992e62 | 458 | const char *target; |
252b5132 RH |
459 | boolean add_to_list; |
460 | { | |
461 | lang_input_statement_type *p; | |
462 | ||
463 | if (add_to_list) | |
464 | p = new_stat (lang_input_statement, stat_ptr); | |
465 | else | |
466 | { | |
467 | p = ((lang_input_statement_type *) | |
468 | stat_alloc (sizeof (lang_input_statement_type))); | |
469 | p->header.next = NULL; | |
470 | } | |
471 | ||
472 | lang_has_input_file = true; | |
473 | p->target = target; | |
474 | switch (file_type) | |
475 | { | |
476 | case lang_input_file_is_symbols_only_enum: | |
477 | p->filename = name; | |
478 | p->is_archive = false; | |
479 | p->real = true; | |
480 | p->local_sym_name = name; | |
481 | p->just_syms_flag = true; | |
482 | p->search_dirs_flag = false; | |
483 | break; | |
484 | case lang_input_file_is_fake_enum: | |
485 | p->filename = name; | |
486 | p->is_archive = false; | |
487 | p->real = false; | |
488 | p->local_sym_name = name; | |
489 | p->just_syms_flag = false; | |
490 | p->search_dirs_flag = false; | |
491 | break; | |
492 | case lang_input_file_is_l_enum: | |
493 | p->is_archive = true; | |
494 | p->filename = name; | |
495 | p->real = true; | |
496 | p->local_sym_name = concat ("-l", name, (const char *) NULL); | |
497 | p->just_syms_flag = false; | |
498 | p->search_dirs_flag = true; | |
499 | break; | |
500 | case lang_input_file_is_marker_enum: | |
501 | p->filename = name; | |
502 | p->is_archive = false; | |
503 | p->real = false; | |
504 | p->local_sym_name = name; | |
505 | p->just_syms_flag = false; | |
506 | p->search_dirs_flag = true; | |
507 | break; | |
508 | case lang_input_file_is_search_file_enum: | |
509 | p->filename = name; | |
510 | p->is_archive = false; | |
511 | p->real = true; | |
512 | p->local_sym_name = name; | |
513 | p->just_syms_flag = false; | |
514 | p->search_dirs_flag = true; | |
515 | break; | |
516 | case lang_input_file_is_file_enum: | |
517 | p->filename = name; | |
518 | p->is_archive = false; | |
519 | p->real = true; | |
520 | p->local_sym_name = name; | |
521 | p->just_syms_flag = false; | |
522 | p->search_dirs_flag = false; | |
523 | break; | |
524 | default: | |
525 | FAIL (); | |
526 | } | |
527 | p->the_bfd = (bfd *) NULL; | |
528 | p->asymbols = (asymbol **) NULL; | |
529 | p->next_real_file = (lang_statement_union_type *) NULL; | |
530 | p->next = (lang_statement_union_type *) NULL; | |
531 | p->symbol_count = 0; | |
532 | p->dynamic = config.dynamic_link; | |
533 | p->whole_archive = whole_archive; | |
534 | p->loaded = false; | |
535 | lang_statement_append (&input_file_chain, | |
536 | (lang_statement_union_type *) p, | |
537 | &p->next_real_file); | |
538 | return p; | |
539 | } | |
540 | ||
541 | lang_input_statement_type * | |
542 | lang_add_input_file (name, file_type, target) | |
5f992e62 | 543 | const char *name; |
252b5132 | 544 | lang_input_file_enum_type file_type; |
5f992e62 | 545 | const char *target; |
252b5132 RH |
546 | { |
547 | lang_has_input_file = true; | |
548 | return new_afile (name, file_type, target, true); | |
549 | } | |
550 | ||
08da4cac KH |
551 | /* Build enough state so that the parser can build its tree. */ |
552 | ||
252b5132 RH |
553 | void |
554 | lang_init () | |
555 | { | |
556 | obstack_begin (&stat_obstack, 1000); | |
557 | ||
558 | stat_ptr = &statement_list; | |
559 | ||
560 | lang_list_init (stat_ptr); | |
561 | ||
562 | lang_list_init (&input_file_chain); | |
563 | lang_list_init (&lang_output_section_statement); | |
564 | lang_list_init (&file_chain); | |
565 | first_file = lang_add_input_file ((char *) NULL, | |
566 | lang_input_file_is_marker_enum, | |
567 | (char *) NULL); | |
08da4cac KH |
568 | abs_output_section = |
569 | lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); | |
252b5132 RH |
570 | |
571 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
572 | ||
573 | } | |
574 | ||
575 | /*---------------------------------------------------------------------- | |
08da4cac KH |
576 | A region is an area of memory declared with the |
577 | MEMORY { name:org=exp, len=exp ... } | |
578 | syntax. | |
252b5132 | 579 | |
08da4cac | 580 | We maintain a list of all the regions here. |
252b5132 | 581 | |
08da4cac KH |
582 | If no regions are specified in the script, then the default is used |
583 | which is created when looked up to be the entire data space. */ | |
252b5132 RH |
584 | |
585 | static lang_memory_region_type *lang_memory_region_list; | |
586 | static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; | |
587 | ||
588 | lang_memory_region_type * | |
589 | lang_memory_region_lookup (name) | |
5f992e62 | 590 | const char *const name; |
252b5132 RH |
591 | { |
592 | lang_memory_region_type *p; | |
593 | ||
594 | for (p = lang_memory_region_list; | |
595 | p != (lang_memory_region_type *) NULL; | |
596 | p = p->next) | |
597 | { | |
598 | if (strcmp (p->name, name) == 0) | |
599 | { | |
600 | return p; | |
601 | } | |
602 | } | |
603 | ||
604 | #if 0 | |
605 | /* This code used to always use the first region in the list as the | |
606 | default region. I changed it to instead use a region | |
607 | encompassing all of memory as the default region. This permits | |
608 | NOLOAD sections to work reasonably without requiring a region. | |
609 | People should specify what region they mean, if they really want | |
610 | a region. */ | |
611 | if (strcmp (name, "*default*") == 0) | |
612 | { | |
613 | if (lang_memory_region_list != (lang_memory_region_type *) NULL) | |
614 | { | |
615 | return lang_memory_region_list; | |
616 | } | |
617 | } | |
618 | #endif | |
619 | ||
620 | { | |
621 | lang_memory_region_type *new = | |
622 | (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type)); | |
623 | ||
624 | new->name = buystring (name); | |
625 | new->next = (lang_memory_region_type *) NULL; | |
626 | ||
627 | *lang_memory_region_list_tail = new; | |
628 | lang_memory_region_list_tail = &new->next; | |
629 | new->origin = 0; | |
630 | new->flags = 0; | |
631 | new->not_flags = 0; | |
08da4cac | 632 | new->length = ~(bfd_size_type) 0; |
252b5132 RH |
633 | new->current = 0; |
634 | new->had_full_message = false; | |
635 | ||
636 | return new; | |
637 | } | |
638 | } | |
639 | ||
5f992e62 | 640 | static lang_memory_region_type * |
252b5132 RH |
641 | lang_memory_default (section) |
642 | asection *section; | |
643 | { | |
644 | lang_memory_region_type *p; | |
645 | ||
646 | flagword sec_flags = section->flags; | |
647 | ||
648 | /* Override SEC_DATA to mean a writable section. */ | |
649 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
650 | sec_flags |= SEC_DATA; | |
651 | ||
652 | for (p = lang_memory_region_list; | |
653 | p != (lang_memory_region_type *) NULL; | |
654 | p = p->next) | |
655 | { | |
656 | if ((p->flags & sec_flags) != 0 | |
657 | && (p->not_flags & sec_flags) == 0) | |
658 | { | |
659 | return p; | |
660 | } | |
661 | } | |
662 | return lang_memory_region_lookup ("*default*"); | |
663 | } | |
664 | ||
665 | lang_output_section_statement_type * | |
666 | lang_output_section_find (name) | |
5f992e62 | 667 | const char *const name; |
252b5132 RH |
668 | { |
669 | lang_statement_union_type *u; | |
670 | lang_output_section_statement_type *lookup; | |
671 | ||
672 | for (u = lang_output_section_statement.head; | |
673 | u != (lang_statement_union_type *) NULL; | |
674 | u = lookup->next) | |
675 | { | |
676 | lookup = &u->output_section_statement; | |
677 | if (strcmp (name, lookup->name) == 0) | |
678 | { | |
679 | return lookup; | |
680 | } | |
681 | } | |
682 | return (lang_output_section_statement_type *) NULL; | |
683 | } | |
684 | ||
685 | lang_output_section_statement_type * | |
686 | lang_output_section_statement_lookup (name) | |
5f992e62 | 687 | const char *const name; |
252b5132 RH |
688 | { |
689 | lang_output_section_statement_type *lookup; | |
690 | ||
691 | lookup = lang_output_section_find (name); | |
692 | if (lookup == (lang_output_section_statement_type *) NULL) | |
693 | { | |
694 | ||
695 | lookup = (lang_output_section_statement_type *) | |
696 | new_stat (lang_output_section_statement, stat_ptr); | |
697 | lookup->region = (lang_memory_region_type *) NULL; | |
562d3460 | 698 | lookup->lma_region = (lang_memory_region_type *) NULL; |
252b5132 RH |
699 | lookup->fill = 0; |
700 | lookup->block_value = 1; | |
701 | lookup->name = name; | |
702 | ||
703 | lookup->next = (lang_statement_union_type *) NULL; | |
704 | lookup->bfd_section = (asection *) NULL; | |
705 | lookup->processed = false; | |
706 | lookup->sectype = normal_section; | |
707 | lookup->addr_tree = (etree_type *) NULL; | |
708 | lang_list_init (&lookup->children); | |
709 | ||
5f992e62 | 710 | lookup->memspec = (const char *) NULL; |
252b5132 RH |
711 | lookup->flags = 0; |
712 | lookup->subsection_alignment = -1; | |
713 | lookup->section_alignment = -1; | |
714 | lookup->load_base = (union etree_union *) NULL; | |
715 | lookup->phdrs = NULL; | |
716 | ||
717 | lang_statement_append (&lang_output_section_statement, | |
718 | (lang_statement_union_type *) lookup, | |
719 | &lookup->next); | |
720 | } | |
721 | return lookup; | |
722 | } | |
723 | ||
724 | static void | |
725 | lang_map_flags (flag) | |
726 | flagword flag; | |
727 | { | |
728 | if (flag & SEC_ALLOC) | |
729 | minfo ("a"); | |
730 | ||
731 | if (flag & SEC_CODE) | |
732 | minfo ("x"); | |
733 | ||
734 | if (flag & SEC_READONLY) | |
735 | minfo ("r"); | |
736 | ||
737 | if (flag & SEC_DATA) | |
738 | minfo ("w"); | |
739 | ||
740 | if (flag & SEC_LOAD) | |
741 | minfo ("l"); | |
742 | } | |
743 | ||
744 | void | |
745 | lang_map () | |
746 | { | |
747 | lang_memory_region_type *m; | |
748 | ||
749 | minfo (_("\nMemory Configuration\n\n")); | |
750 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
751 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
752 | ||
753 | for (m = lang_memory_region_list; | |
754 | m != (lang_memory_region_type *) NULL; | |
755 | m = m->next) | |
756 | { | |
757 | char buf[100]; | |
758 | int len; | |
759 | ||
760 | fprintf (config.map_file, "%-16s ", m->name); | |
761 | ||
762 | sprintf_vma (buf, m->origin); | |
763 | minfo ("0x%s ", buf); | |
764 | len = strlen (buf); | |
765 | while (len < 16) | |
766 | { | |
767 | print_space (); | |
768 | ++len; | |
769 | } | |
770 | ||
771 | minfo ("0x%V", m->length); | |
772 | if (m->flags || m->not_flags) | |
773 | { | |
774 | #ifndef BFD64 | |
775 | minfo (" "); | |
776 | #endif | |
777 | if (m->flags) | |
778 | { | |
779 | print_space (); | |
780 | lang_map_flags (m->flags); | |
781 | } | |
782 | ||
783 | if (m->not_flags) | |
784 | { | |
785 | minfo (" !"); | |
786 | lang_map_flags (m->not_flags); | |
787 | } | |
788 | } | |
789 | ||
790 | print_nl (); | |
791 | } | |
792 | ||
793 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
794 | ||
795 | print_statements (); | |
796 | } | |
797 | ||
798 | /* Initialize an output section. */ | |
799 | ||
800 | static void | |
801 | init_os (s) | |
802 | lang_output_section_statement_type *s; | |
803 | { | |
804 | section_userdata_type *new; | |
805 | ||
806 | if (s->bfd_section != NULL) | |
807 | return; | |
808 | ||
809 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) | |
810 | einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME); | |
811 | ||
812 | new = ((section_userdata_type *) | |
813 | stat_alloc (sizeof (section_userdata_type))); | |
814 | ||
815 | s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); | |
816 | if (s->bfd_section == (asection *) NULL) | |
817 | s->bfd_section = bfd_make_section (output_bfd, s->name); | |
818 | if (s->bfd_section == (asection *) NULL) | |
819 | { | |
820 | einfo (_("%P%F: output format %s cannot represent section called %s\n"), | |
821 | output_bfd->xvec->name, s->name); | |
822 | } | |
823 | s->bfd_section->output_section = s->bfd_section; | |
824 | ||
08da4cac KH |
825 | /* We initialize an output sections output offset to minus its own |
826 | vma to allow us to output a section through itself. */ | |
252b5132 RH |
827 | s->bfd_section->output_offset = 0; |
828 | get_userdata (s->bfd_section) = (PTR) new; | |
829 | ||
830 | /* If there is a base address, make sure that any sections it might | |
831 | mention are initialized. */ | |
832 | if (s->addr_tree != NULL) | |
833 | exp_init_os (s->addr_tree); | |
834 | } | |
835 | ||
836 | /* Make sure that all output sections mentioned in an expression are | |
837 | initialized. */ | |
838 | ||
839 | static void | |
840 | exp_init_os (exp) | |
841 | etree_type *exp; | |
842 | { | |
843 | switch (exp->type.node_class) | |
844 | { | |
845 | case etree_assign: | |
846 | exp_init_os (exp->assign.src); | |
847 | break; | |
848 | ||
849 | case etree_binary: | |
850 | exp_init_os (exp->binary.lhs); | |
851 | exp_init_os (exp->binary.rhs); | |
852 | break; | |
853 | ||
854 | case etree_trinary: | |
855 | exp_init_os (exp->trinary.cond); | |
856 | exp_init_os (exp->trinary.lhs); | |
857 | exp_init_os (exp->trinary.rhs); | |
858 | break; | |
859 | ||
860 | case etree_unary: | |
861 | exp_init_os (exp->unary.child); | |
862 | break; | |
863 | ||
864 | case etree_name: | |
865 | switch (exp->type.node_code) | |
866 | { | |
867 | case ADDR: | |
868 | case LOADADDR: | |
869 | case SIZEOF: | |
870 | { | |
871 | lang_output_section_statement_type *os; | |
872 | ||
873 | os = lang_output_section_find (exp->name.name); | |
874 | if (os != NULL && os->bfd_section == NULL) | |
875 | init_os (os); | |
876 | } | |
877 | } | |
878 | break; | |
879 | ||
880 | default: | |
881 | break; | |
882 | } | |
883 | } | |
9503fd87 | 884 | \f |
252b5132 | 885 | /* Sections marked with the SEC_LINK_ONCE flag should only be linked |
9503fd87 ILT |
886 | once into the output. This routine checks each section, and |
887 | arrange to discard it if a section of the same name has already | |
bb8fe706 ILT |
888 | been linked. If the section has COMDAT information, then it uses |
889 | that to decide whether the section should be included. This code | |
890 | assumes that all relevant sections have the SEC_LINK_ONCE flag set; | |
9503fd87 ILT |
891 | that is, it does not depend solely upon the section name. |
892 | section_already_linked is called via bfd_map_over_sections. */ | |
893 | ||
894 | /* This is the shape of the elements inside the already_linked hash | |
895 | table. It maps a name onto a list of already_linked elements with | |
896 | the same name. It's possible to get more than one element in a | |
897 | list if the COMDAT sections have different names. */ | |
898 | ||
5f992e62 | 899 | struct already_linked_hash_entry |
9503fd87 ILT |
900 | { |
901 | struct bfd_hash_entry root; | |
902 | struct already_linked *entry; | |
903 | }; | |
904 | ||
5f992e62 | 905 | struct already_linked |
9503fd87 ILT |
906 | { |
907 | struct already_linked *next; | |
908 | asection *sec; | |
909 | }; | |
910 | ||
911 | /* The hash table. */ | |
912 | ||
913 | static struct bfd_hash_table already_linked_table; | |
252b5132 | 914 | |
252b5132 RH |
915 | static void |
916 | section_already_linked (abfd, sec, data) | |
917 | bfd *abfd; | |
918 | asection *sec; | |
919 | PTR data; | |
920 | { | |
921 | lang_input_statement_type *entry = (lang_input_statement_type *) data; | |
252b5132 RH |
922 | flagword flags; |
923 | const char *name; | |
9503fd87 ILT |
924 | struct already_linked *l; |
925 | struct already_linked_hash_entry *already_linked_list; | |
252b5132 RH |
926 | |
927 | /* If we are only reading symbols from this object, then we want to | |
928 | discard all sections. */ | |
929 | if (entry->just_syms_flag) | |
930 | { | |
931 | sec->output_section = bfd_abs_section_ptr; | |
932 | sec->output_offset = sec->vma; | |
933 | return; | |
934 | } | |
935 | ||
936 | flags = bfd_get_section_flags (abfd, sec); | |
937 | ||
938 | if ((flags & SEC_LINK_ONCE) == 0) | |
939 | return; | |
940 | ||
577a0623 | 941 | /* FIXME: When doing a relocatable link, we may have trouble |
e361c369 ILT |
942 | copying relocations in other sections that refer to local symbols |
943 | in the section being discarded. Those relocations will have to | |
944 | be converted somehow; as of this writing I'm not sure that any of | |
945 | the backends handle that correctly. | |
946 | ||
947 | It is tempting to instead not discard link once sections when | |
577a0623 | 948 | doing a relocatable link (technically, they should be discarded |
e361c369 ILT |
949 | whenever we are building constructors). However, that fails, |
950 | because the linker winds up combining all the link once sections | |
951 | into a single large link once section, which defeats the purpose | |
952 | of having link once sections in the first place. | |
953 | ||
577a0623 | 954 | Also, not merging link once sections in a relocatable link |
e361c369 ILT |
955 | causes trouble for MIPS ELF, which relies in link once semantics |
956 | to handle the .reginfo section correctly. */ | |
957 | ||
252b5132 RH |
958 | name = bfd_get_section_name (abfd, sec); |
959 | ||
5f992e62 | 960 | already_linked_list = |
9503fd87 ILT |
961 | ((struct already_linked_hash_entry *) |
962 | bfd_hash_lookup (&already_linked_table, name, true, false)); | |
963 | ||
08da4cac | 964 | for (l = already_linked_list->entry; l != NULL; l = l->next) |
252b5132 | 965 | { |
9503fd87 ILT |
966 | if (sec->comdat == NULL |
967 | || l->sec->comdat == NULL | |
968 | || strcmp (sec->comdat->name, l->sec->comdat->name) == 0) | |
252b5132 RH |
969 | { |
970 | /* The section has already been linked. See if we should | |
971 | issue a warning. */ | |
972 | switch (flags & SEC_LINK_DUPLICATES) | |
973 | { | |
974 | default: | |
975 | abort (); | |
976 | ||
977 | case SEC_LINK_DUPLICATES_DISCARD: | |
978 | break; | |
979 | ||
980 | case SEC_LINK_DUPLICATES_ONE_ONLY: | |
bb8fe706 ILT |
981 | if (sec->comdat == NULL) |
982 | einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"), | |
983 | abfd, name); | |
984 | else | |
985 | einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"), | |
986 | abfd, name, sec->comdat->name); | |
252b5132 RH |
987 | break; |
988 | ||
989 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: | |
990 | /* FIXME: We should really dig out the contents of both | |
991 | sections and memcmp them. The COFF/PE spec says that | |
992 | the Microsoft linker does not implement this | |
993 | correctly, so I'm not going to bother doing it | |
994 | either. */ | |
995 | /* Fall through. */ | |
996 | case SEC_LINK_DUPLICATES_SAME_SIZE: | |
997 | if (bfd_section_size (abfd, sec) | |
998 | != bfd_section_size (l->sec->owner, l->sec)) | |
999 | einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"), | |
1000 | abfd, name); | |
1001 | break; | |
1002 | } | |
1003 | ||
1004 | /* Set the output_section field so that wild_doit does not | |
bb8fe706 ILT |
1005 | create a lang_input_section structure for this section. |
1006 | Since there might be a symbol in the section being | |
1007 | discarded, we must retain a pointer to the section which | |
1008 | we are really going to use. */ | |
252b5132 | 1009 | sec->output_section = bfd_abs_section_ptr; |
24376d1b | 1010 | sec->kept_section = l->sec; |
252b5132 RH |
1011 | |
1012 | return; | |
1013 | } | |
1014 | } | |
1015 | ||
9503fd87 ILT |
1016 | /* This is the first section with this name. Record it. Allocate |
1017 | the memory from the same obstack as the hash table is kept in. */ | |
1018 | ||
5f992e62 | 1019 | l = ((struct already_linked *) |
9503fd87 | 1020 | 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 * | |
1031 | already_linked_newfunc (entry, table, string) | |
1032 | struct bfd_hash_entry *entry ATTRIBUTE_UNUSED; | |
1033 | struct bfd_hash_table *table; | |
1034 | const char *string ATTRIBUTE_UNUSED; | |
1035 | { | |
5f992e62 | 1036 | struct already_linked_hash_entry *ret = |
9503fd87 ILT |
1037 | bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry)); |
1038 | ||
1039 | ret->entry = NULL; | |
1040 | ||
1041 | return (struct bfd_hash_entry *) ret; | |
1042 | } | |
1043 | ||
1044 | static void | |
1045 | already_linked_table_init () | |
1046 | { | |
1047 | if (! bfd_hash_table_init_n (&already_linked_table, | |
1048 | already_linked_newfunc, | |
1049 | 42)) | |
1050 | einfo (_("%P%F: Failed to create hash table\n")); | |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | already_linked_table_free () | |
1055 | { | |
1056 | bfd_hash_table_free (&already_linked_table); | |
252b5132 RH |
1057 | } |
1058 | \f | |
1059 | /* The wild routines. | |
1060 | ||
1061 | These expand statements like *(.text) and foo.o to a list of | |
1062 | explicit actions, like foo.o(.text), bar.o(.text) and | |
1063 | foo.o(.text, .data). */ | |
1064 | ||
1065 | /* Return true if the PATTERN argument is a wildcard pattern. | |
1066 | Although backslashes are treated specially if a pattern contains | |
1067 | wildcards, we do not consider the mere presence of a backslash to | |
1068 | be enough to cause the the pattern to be treated as a wildcard. | |
1069 | That lets us handle DOS filenames more naturally. */ | |
1070 | ||
1071 | static boolean | |
1072 | wildcardp (pattern) | |
1073 | const char *pattern; | |
1074 | { | |
1075 | const char *s; | |
1076 | ||
1077 | for (s = pattern; *s != '\0'; ++s) | |
1078 | if (*s == '?' | |
1079 | || *s == '*' | |
1080 | || *s == '[') | |
1081 | return true; | |
1082 | return false; | |
1083 | } | |
1084 | ||
1085 | /* Add SECTION to the output section OUTPUT. Do this by creating a | |
1086 | lang_input_section statement which is placed at PTR. FILE is the | |
1087 | input file which holds SECTION. */ | |
1088 | ||
1089 | void | |
1090 | wild_doit (ptr, section, output, file) | |
1091 | lang_statement_list_type *ptr; | |
1092 | asection *section; | |
1093 | lang_output_section_statement_type *output; | |
1094 | lang_input_statement_type *file; | |
1095 | { | |
1096 | flagword flags; | |
1097 | boolean discard; | |
1098 | ||
1099 | flags = bfd_get_section_flags (section->owner, section); | |
1100 | ||
1101 | discard = false; | |
1102 | ||
1103 | /* If we are doing a final link, discard sections marked with | |
1104 | SEC_EXCLUDE. */ | |
1105 | if (! link_info.relocateable | |
1106 | && (flags & SEC_EXCLUDE) != 0) | |
1107 | discard = true; | |
1108 | ||
1109 | /* Discard input sections which are assigned to a section named | |
1110 | DISCARD_SECTION_NAME. */ | |
1111 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
1112 | discard = true; | |
1113 | ||
1114 | /* Discard debugging sections if we are stripping debugging | |
1115 | information. */ | |
1116 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
1117 | && (flags & SEC_DEBUGGING) != 0) | |
1118 | discard = true; | |
1119 | ||
1120 | if (discard) | |
1121 | { | |
1122 | if (section->output_section == NULL) | |
1123 | { | |
1124 | /* This prevents future calls from assigning this section. */ | |
1125 | section->output_section = bfd_abs_section_ptr; | |
1126 | } | |
1127 | return; | |
1128 | } | |
1129 | ||
1130 | if (section->output_section == NULL) | |
1131 | { | |
1132 | boolean first; | |
1133 | lang_input_section_type *new; | |
1134 | flagword flags; | |
1135 | ||
1136 | if (output->bfd_section == NULL) | |
1137 | { | |
1138 | init_os (output); | |
1139 | first = true; | |
1140 | } | |
1141 | else | |
1142 | first = false; | |
1143 | ||
08da4cac | 1144 | /* Add a section reference to the list. */ |
252b5132 RH |
1145 | new = new_stat (lang_input_section, ptr); |
1146 | ||
1147 | new->section = section; | |
1148 | new->ifile = file; | |
1149 | section->output_section = output->bfd_section; | |
1150 | ||
1151 | flags = section->flags; | |
1152 | ||
1153 | /* We don't copy the SEC_NEVER_LOAD flag from an input section | |
1154 | to an output section, because we want to be able to include a | |
1155 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
1156 | section (I don't know why we want to do this, but we do). | |
1157 | build_link_order in ldwrite.c handles this case by turning | |
1158 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
1159 | ||
1160 | flags &= ~ SEC_NEVER_LOAD; | |
1161 | ||
1162 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've | |
1163 | already been processed. One reason to do this is that on pe | |
1164 | format targets, .text$foo sections go into .text and it's odd | |
1165 | to see .text with SEC_LINK_ONCE set. */ | |
1166 | ||
1167 | if (! link_info.relocateable) | |
1168 | flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); | |
1169 | ||
1170 | /* If this is not the first input section, and the SEC_READONLY | |
1171 | flag is not currently set, then don't set it just because the | |
1172 | input section has it set. */ | |
1173 | ||
1174 | if (! first && (section->output_section->flags & SEC_READONLY) == 0) | |
1175 | flags &= ~ SEC_READONLY; | |
1176 | ||
1177 | section->output_section->flags |= flags; | |
1178 | ||
1179 | /* If SEC_READONLY is not set in the input section, then clear | |
1180 | it from the output section. */ | |
1181 | if ((section->flags & SEC_READONLY) == 0) | |
1182 | section->output_section->flags &= ~SEC_READONLY; | |
1183 | ||
1184 | switch (output->sectype) | |
1185 | { | |
1186 | case normal_section: | |
1187 | break; | |
1188 | case dsect_section: | |
1189 | case copy_section: | |
1190 | case info_section: | |
1191 | case overlay_section: | |
1192 | output->bfd_section->flags &= ~SEC_ALLOC; | |
1193 | break; | |
1194 | case noload_section: | |
1195 | output->bfd_section->flags &= ~SEC_LOAD; | |
1196 | output->bfd_section->flags |= SEC_NEVER_LOAD; | |
1197 | break; | |
1198 | } | |
1199 | ||
667f5177 ILT |
1200 | /* Copy over SEC_SMALL_DATA. */ |
1201 | if (section->flags & SEC_SMALL_DATA) | |
1202 | section->output_section->flags |= SEC_SMALL_DATA; | |
9e41f973 | 1203 | |
252b5132 RH |
1204 | if (section->alignment_power > output->bfd_section->alignment_power) |
1205 | output->bfd_section->alignment_power = section->alignment_power; | |
1206 | ||
1207 | /* If supplied an aligment, then force it. */ | |
1208 | if (output->section_alignment != -1) | |
1209 | output->bfd_section->alignment_power = output->section_alignment; | |
74459f0e TW |
1210 | |
1211 | if (section->flags & SEC_BLOCK) | |
08da4cac KH |
1212 | { |
1213 | section->output_section->flags |= SEC_BLOCK; | |
1214 | /* FIXME: This value should really be obtained from the bfd... */ | |
1215 | output->block_value = 128; | |
1216 | } | |
252b5132 RH |
1217 | } |
1218 | } | |
1219 | ||
1220 | /* Handle wildcard sorting. This returns the lang_input_section which | |
1221 | should follow the one we are going to create for SECTION and FILE, | |
1222 | based on the sorting requirements of WILD. It returns NULL if the | |
1223 | new section should just go at the end of the current list. */ | |
1224 | ||
1225 | static lang_statement_union_type * | |
1226 | wild_sort (wild, file, section) | |
1227 | lang_wild_statement_type *wild; | |
1228 | lang_input_statement_type *file; | |
1229 | asection *section; | |
1230 | { | |
1231 | const char *section_name; | |
1232 | lang_statement_union_type *l; | |
1233 | ||
1234 | if (! wild->filenames_sorted && ! wild->sections_sorted) | |
1235 | return NULL; | |
1236 | ||
1237 | section_name = bfd_get_section_name (file->the_bfd, section); | |
1238 | for (l = wild->children.head; l != NULL; l = l->next) | |
1239 | { | |
1240 | lang_input_section_type *ls; | |
1241 | ||
1242 | if (l->header.type != lang_input_section_enum) | |
1243 | continue; | |
1244 | ls = &l->input_section; | |
1245 | ||
1246 | /* Sorting by filename takes precedence over sorting by section | |
1247 | name. */ | |
1248 | ||
1249 | if (wild->filenames_sorted) | |
1250 | { | |
1251 | const char *fn, *ln; | |
1252 | boolean fa, la; | |
1253 | int i; | |
1254 | ||
1255 | /* The PE support for the .idata section as generated by | |
1256 | dlltool assumes that files will be sorted by the name of | |
1257 | the archive and then the name of the file within the | |
1258 | archive. */ | |
1259 | ||
1260 | if (file->the_bfd != NULL | |
1261 | && bfd_my_archive (file->the_bfd) != NULL) | |
1262 | { | |
1263 | fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); | |
1264 | fa = true; | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | fn = file->filename; | |
1269 | fa = false; | |
1270 | } | |
1271 | ||
1272 | if (ls->ifile->the_bfd != NULL | |
1273 | && bfd_my_archive (ls->ifile->the_bfd) != NULL) | |
1274 | { | |
1275 | ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd)); | |
1276 | la = true; | |
1277 | } | |
1278 | else | |
1279 | { | |
1280 | ln = ls->ifile->filename; | |
1281 | la = false; | |
1282 | } | |
1283 | ||
1284 | i = strcmp (fn, ln); | |
1285 | if (i > 0) | |
1286 | continue; | |
1287 | else if (i < 0) | |
1288 | break; | |
1289 | ||
1290 | if (fa || la) | |
1291 | { | |
1292 | if (fa) | |
1293 | fn = file->filename; | |
1294 | if (la) | |
1295 | ln = ls->ifile->filename; | |
1296 | ||
1297 | i = strcmp (fn, ln); | |
1298 | if (i > 0) | |
1299 | continue; | |
1300 | else if (i < 0) | |
1301 | break; | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | /* Here either the files are not sorted by name, or we are | |
1306 | looking at the sections for this file. */ | |
1307 | ||
1308 | if (wild->sections_sorted) | |
1309 | { | |
1310 | if (strcmp (section_name, | |
1311 | bfd_get_section_name (ls->ifile->the_bfd, | |
1312 | ls->section)) | |
1313 | < 0) | |
1314 | break; | |
1315 | } | |
1316 | } | |
1317 | ||
1318 | return l; | |
1319 | } | |
1320 | ||
1321 | /* Expand a wild statement for a particular FILE. SECTION may be | |
1322 | NULL, in which case it is a wild card. */ | |
1323 | ||
1324 | static void | |
4dec4d4e | 1325 | output_section_callback (ptr, section, file, output) |
252b5132 | 1326 | lang_wild_statement_type *ptr; |
4dec4d4e | 1327 | asection *section; |
252b5132 | 1328 | lang_input_statement_type *file; |
5f992e62 | 1329 | PTR output; |
4dec4d4e RH |
1330 | { |
1331 | lang_statement_union_type *before; | |
5f992e62 | 1332 | |
4dec4d4e RH |
1333 | /* If the wild pattern was marked KEEP, the member sections |
1334 | should be as well. */ | |
1335 | if (ptr->keep_sections) | |
1336 | section->flags |= SEC_KEEP; | |
5f992e62 | 1337 | |
4dec4d4e | 1338 | before = wild_sort (ptr, file, section); |
5f992e62 | 1339 | |
4dec4d4e RH |
1340 | /* Here BEFORE points to the lang_input_section which |
1341 | should follow the one we are about to add. If BEFORE | |
1342 | is NULL, then the section should just go at the end | |
1343 | of the current list. */ | |
5f992e62 | 1344 | |
4dec4d4e | 1345 | if (before == NULL) |
5f992e62 AM |
1346 | wild_doit (&ptr->children, section, |
1347 | (lang_output_section_statement_type *) output, | |
4dec4d4e RH |
1348 | file); |
1349 | else | |
252b5132 | 1350 | { |
4dec4d4e RH |
1351 | lang_statement_list_type list; |
1352 | lang_statement_union_type **pp; | |
5f992e62 | 1353 | |
4dec4d4e | 1354 | lang_list_init (&list); |
5f992e62 AM |
1355 | wild_doit (&list, section, |
1356 | (lang_output_section_statement_type *) output, | |
4dec4d4e | 1357 | file); |
5f992e62 | 1358 | |
4dec4d4e RH |
1359 | /* If we are discarding the section, LIST.HEAD will |
1360 | be NULL. */ | |
1361 | if (list.head != NULL) | |
252b5132 | 1362 | { |
4dec4d4e | 1363 | ASSERT (list.head->next == NULL); |
5f992e62 | 1364 | |
4dec4d4e RH |
1365 | for (pp = &ptr->children.head; |
1366 | *pp != before; | |
1367 | pp = &(*pp)->next) | |
1368 | ASSERT (*pp != NULL); | |
5f992e62 | 1369 | |
4dec4d4e RH |
1370 | list.head->next = *pp; |
1371 | *pp = list.head; | |
252b5132 RH |
1372 | } |
1373 | } | |
1374 | } | |
1375 | ||
1376 | /* This is passed a file name which must have been seen already and | |
1377 | added to the statement tree. We will see if it has been opened | |
1378 | already and had its symbols read. If not then we'll read it. */ | |
1379 | ||
1380 | static lang_input_statement_type * | |
1381 | lookup_name (name) | |
1382 | const char *name; | |
1383 | { | |
1384 | lang_input_statement_type *search; | |
1385 | ||
1386 | for (search = (lang_input_statement_type *) input_file_chain.head; | |
1387 | search != (lang_input_statement_type *) NULL; | |
1388 | search = (lang_input_statement_type *) search->next_real_file) | |
1389 | { | |
1390 | if (search->filename == (char *) NULL && name == (char *) NULL) | |
1391 | return search; | |
1392 | if (search->filename != (char *) NULL | |
1393 | && name != (char *) NULL | |
1394 | && strcmp (search->filename, name) == 0) | |
1395 | break; | |
1396 | } | |
1397 | ||
1398 | if (search == (lang_input_statement_type *) NULL) | |
1399 | search = new_afile (name, lang_input_file_is_file_enum, default_target, | |
1400 | false); | |
1401 | ||
1402 | /* If we have already added this file, or this file is not real | |
1403 | (FIXME: can that ever actually happen?) or the name is NULL | |
1404 | (FIXME: can that ever actually happen?) don't add this file. */ | |
1405 | if (search->loaded | |
1406 | || ! search->real | |
1407 | || search->filename == (const char *) NULL) | |
1408 | return search; | |
1409 | ||
1410 | load_symbols (search, (lang_statement_list_type *) NULL); | |
1411 | ||
1412 | return search; | |
1413 | } | |
1414 | ||
1415 | /* Get the symbols for an input file. */ | |
1416 | ||
1417 | static void | |
1418 | load_symbols (entry, place) | |
1419 | lang_input_statement_type *entry; | |
1420 | lang_statement_list_type *place; | |
1421 | { | |
1422 | char **matching; | |
1423 | ||
1424 | if (entry->loaded) | |
1425 | return; | |
1426 | ||
1427 | ldfile_open_file (entry); | |
1428 | ||
1429 | if (! bfd_check_format (entry->the_bfd, bfd_archive) | |
1430 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
1431 | { | |
1432 | bfd_error_type err; | |
1433 | lang_statement_list_type *hold; | |
1434 | ||
1435 | err = bfd_get_error (); | |
1436 | if (err == bfd_error_file_ambiguously_recognized) | |
1437 | { | |
1438 | char **p; | |
1439 | ||
1440 | einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); | |
1441 | einfo (_("%B: matching formats:"), entry->the_bfd); | |
1442 | for (p = matching; *p != NULL; p++) | |
1443 | einfo (" %s", *p); | |
1444 | einfo ("%F\n"); | |
1445 | } | |
1446 | else if (err != bfd_error_file_not_recognized | |
1447 | || place == NULL) | |
1448 | einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); | |
1449 | ||
1450 | bfd_close (entry->the_bfd); | |
1451 | entry->the_bfd = NULL; | |
1452 | ||
1453 | /* See if the emulation has some special knowledge. */ | |
1454 | ||
1455 | if (ldemul_unrecognized_file (entry)) | |
1456 | return; | |
1457 | ||
1458 | /* Try to interpret the file as a linker script. */ | |
1459 | ||
1460 | ldfile_open_command_file (entry->filename); | |
1461 | ||
1462 | hold = stat_ptr; | |
1463 | stat_ptr = place; | |
1464 | ||
1465 | ldfile_assumed_script = true; | |
1466 | parser_input = input_script; | |
1467 | yyparse (); | |
1468 | ldfile_assumed_script = false; | |
1469 | ||
1470 | stat_ptr = hold; | |
1471 | ||
1472 | return; | |
1473 | } | |
1474 | ||
1475 | if (ldemul_recognized_file (entry)) | |
1476 | return; | |
1477 | ||
1478 | /* We don't call ldlang_add_file for an archive. Instead, the | |
1479 | add_symbols entry point will call ldlang_add_file, via the | |
1480 | add_archive_element callback, for each element of the archive | |
1481 | which is used. */ | |
1482 | switch (bfd_get_format (entry->the_bfd)) | |
1483 | { | |
1484 | default: | |
1485 | break; | |
1486 | ||
1487 | case bfd_object: | |
1488 | ldlang_add_file (entry); | |
1489 | if (trace_files || trace_file_tries) | |
1490 | info_msg ("%I\n", entry); | |
1491 | break; | |
1492 | ||
1493 | case bfd_archive: | |
1494 | if (entry->whole_archive) | |
1495 | { | |
1496 | bfd *member = bfd_openr_next_archived_file (entry->the_bfd, | |
1497 | (bfd *) NULL); | |
1498 | while (member != NULL) | |
1499 | { | |
1500 | if (! bfd_check_format (member, bfd_object)) | |
1501 | einfo (_("%F%B: object %B in archive is not object\n"), | |
1502 | entry->the_bfd, member); | |
1503 | if (! ((*link_info.callbacks->add_archive_element) | |
1504 | (&link_info, member, "--whole-archive"))) | |
1505 | abort (); | |
1506 | if (! bfd_link_add_symbols (member, &link_info)) | |
1507 | einfo (_("%F%B: could not read symbols: %E\n"), member); | |
1508 | member = bfd_openr_next_archived_file (entry->the_bfd, | |
1509 | member); | |
1510 | } | |
1511 | ||
1512 | entry->loaded = true; | |
1513 | ||
1514 | return; | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | if (! bfd_link_add_symbols (entry->the_bfd, &link_info)) | |
1519 | einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); | |
1520 | ||
1521 | entry->loaded = true; | |
1522 | } | |
1523 | ||
252b5132 RH |
1524 | /* Handle a wild statement. SECTION or FILE or both may be NULL, |
1525 | indicating that it is a wildcard. Separate lang_input_section | |
1526 | statements are created for each part of the expansion; they are | |
1527 | added after the wild statement S. OUTPUT is the output section. */ | |
1528 | ||
1529 | static void | |
1530 | wild (s, section, file, target, output) | |
1531 | lang_wild_statement_type *s; | |
1532 | const char *section; | |
1533 | const char *file; | |
87f2a346 | 1534 | const char *target ATTRIBUTE_UNUSED; |
252b5132 RH |
1535 | lang_output_section_statement_type *output; |
1536 | { | |
5f992e62 | 1537 | walk_wild (s, section, file, output_section_callback, (PTR) output); |
252b5132 RH |
1538 | |
1539 | if (section != (char *) NULL | |
1540 | && strcmp (section, "COMMON") == 0 | |
1541 | && default_common_section == NULL) | |
1542 | { | |
1543 | /* Remember the section that common is going to in case we later | |
1544 | get something which doesn't know where to put it. */ | |
1545 | default_common_section = output; | |
1546 | } | |
1547 | } | |
1548 | ||
e50d8076 | 1549 | /* Return true iff target is the sought target. */ |
08da4cac | 1550 | |
e50d8076 NC |
1551 | static int |
1552 | get_target (target, data) | |
08da4cac | 1553 | const bfd_target *target; |
5f992e62 | 1554 | PTR data; |
e50d8076 | 1555 | { |
08da4cac | 1556 | const char *sought = (const char *) data; |
5f992e62 | 1557 | |
e50d8076 NC |
1558 | return strcmp (target->name, sought) == 0; |
1559 | } | |
1560 | ||
1561 | /* Like strcpy() but convert to lower case as well. */ | |
08da4cac | 1562 | |
e50d8076 NC |
1563 | static void |
1564 | stricpy (dest, src) | |
08da4cac KH |
1565 | char *dest; |
1566 | char *src; | |
e50d8076 NC |
1567 | { |
1568 | char c; | |
5f992e62 | 1569 | |
08da4cac | 1570 | while ((c = *src++) != 0) |
e50d8076 NC |
1571 | { |
1572 | if (isupper ((unsigned char) c)) | |
1573 | c = tolower (c); | |
1574 | ||
08da4cac | 1575 | *dest++ = c; |
e50d8076 NC |
1576 | } |
1577 | ||
08da4cac | 1578 | *dest = 0; |
e50d8076 NC |
1579 | } |
1580 | ||
1581 | /* Remove the first occurance of needle (if any) in haystack | |
1582 | from haystack. */ | |
08da4cac | 1583 | |
e50d8076 NC |
1584 | static void |
1585 | strcut (haystack, needle) | |
08da4cac KH |
1586 | char *haystack; |
1587 | char *needle; | |
e50d8076 NC |
1588 | { |
1589 | haystack = strstr (haystack, needle); | |
5f992e62 | 1590 | |
e50d8076 NC |
1591 | if (haystack) |
1592 | { | |
08da4cac | 1593 | char *src; |
e50d8076 | 1594 | |
08da4cac KH |
1595 | for (src = haystack + strlen (needle); *src;) |
1596 | *haystack++ = *src++; | |
5f992e62 | 1597 | |
08da4cac | 1598 | *haystack = 0; |
e50d8076 NC |
1599 | } |
1600 | } | |
1601 | ||
1602 | /* Compare two target format name strings. | |
1603 | Return a value indicating how "similar" they are. */ | |
08da4cac | 1604 | |
e50d8076 NC |
1605 | static int |
1606 | name_compare (first, second) | |
08da4cac KH |
1607 | char *first; |
1608 | char *second; | |
e50d8076 | 1609 | { |
08da4cac KH |
1610 | char *copy1; |
1611 | char *copy2; | |
1612 | int result; | |
5f992e62 | 1613 | |
e50d8076 NC |
1614 | copy1 = xmalloc (strlen (first) + 1); |
1615 | copy2 = xmalloc (strlen (second) + 1); | |
1616 | ||
1617 | /* Convert the names to lower case. */ | |
1618 | stricpy (copy1, first); | |
1619 | stricpy (copy2, second); | |
1620 | ||
1621 | /* Remove and endian strings from the name. */ | |
1622 | strcut (copy1, "big"); | |
1623 | strcut (copy1, "little"); | |
1624 | strcut (copy2, "big"); | |
1625 | strcut (copy2, "little"); | |
1626 | ||
1627 | /* Return a value based on how many characters match, | |
1628 | starting from the beginning. If both strings are | |
1629 | the same then return 10 * their length. */ | |
08da4cac KH |
1630 | for (result = 0; copy1[result] == copy2[result]; result++) |
1631 | if (copy1[result] == 0) | |
e50d8076 NC |
1632 | { |
1633 | result *= 10; | |
1634 | break; | |
1635 | } | |
5f992e62 | 1636 | |
e50d8076 NC |
1637 | free (copy1); |
1638 | free (copy2); | |
1639 | ||
1640 | return result; | |
1641 | } | |
1642 | ||
1643 | /* Set by closest_target_match() below. */ | |
08da4cac | 1644 | static const bfd_target *winner; |
e50d8076 NC |
1645 | |
1646 | /* Scan all the valid bfd targets looking for one that has the endianness | |
1647 | requirement that was specified on the command line, and is the nearest | |
1648 | match to the original output target. */ | |
08da4cac | 1649 | |
e50d8076 NC |
1650 | static int |
1651 | closest_target_match (target, data) | |
08da4cac | 1652 | const bfd_target *target; |
5f992e62 | 1653 | PTR data; |
e50d8076 | 1654 | { |
08da4cac | 1655 | const bfd_target *original = (const bfd_target *) data; |
5f992e62 | 1656 | |
08da4cac KH |
1657 | if (command_line.endian == ENDIAN_BIG |
1658 | && target->byteorder != BFD_ENDIAN_BIG) | |
e50d8076 | 1659 | return 0; |
5f992e62 | 1660 | |
08da4cac KH |
1661 | if (command_line.endian == ENDIAN_LITTLE |
1662 | && target->byteorder != BFD_ENDIAN_LITTLE) | |
e50d8076 NC |
1663 | return 0; |
1664 | ||
1665 | /* Must be the same flavour. */ | |
1666 | if (target->flavour != original->flavour) | |
1667 | return 0; | |
1668 | ||
1669 | /* If we have not found a potential winner yet, then record this one. */ | |
1670 | if (winner == NULL) | |
1671 | { | |
1672 | winner = target; | |
1673 | return 0; | |
1674 | } | |
1675 | ||
1676 | /* Oh dear, we now have two potential candidates for a successful match. | |
4de2d33d | 1677 | Compare their names and choose the better one. */ |
e50d8076 NC |
1678 | if (name_compare (target->name, original->name) > name_compare (winner->name, original->name)) |
1679 | winner = target; | |
1680 | ||
1681 | /* Keep on searching until wqe have checked them all. */ | |
1682 | return 0; | |
1683 | } | |
1684 | ||
1685 | /* Return the BFD target format of the first input file. */ | |
08da4cac | 1686 | |
e50d8076 NC |
1687 | static char * |
1688 | get_first_input_target () | |
1689 | { | |
08da4cac | 1690 | char *target = NULL; |
e50d8076 NC |
1691 | |
1692 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
1693 | { | |
1694 | if (s->header.type == lang_input_statement_enum | |
1695 | && s->real) | |
1696 | { | |
1697 | ldfile_open_file (s); | |
5f992e62 | 1698 | |
e50d8076 NC |
1699 | if (s->the_bfd != NULL |
1700 | && bfd_check_format (s->the_bfd, bfd_object)) | |
1701 | { | |
1702 | target = bfd_get_target (s->the_bfd); | |
5f992e62 | 1703 | |
e50d8076 NC |
1704 | if (target != NULL) |
1705 | break; | |
1706 | } | |
1707 | } | |
1708 | } | |
5f992e62 | 1709 | |
e50d8076 NC |
1710 | return target; |
1711 | } | |
1712 | ||
252b5132 RH |
1713 | /* Open the output file. */ |
1714 | ||
1715 | static bfd * | |
1716 | open_output (name) | |
08da4cac | 1717 | const char *name; |
252b5132 | 1718 | { |
08da4cac | 1719 | bfd *output; |
252b5132 | 1720 | |
08da4cac | 1721 | /* Has the user told us which output format to use? */ |
252b5132 RH |
1722 | if (output_target == (char *) NULL) |
1723 | { | |
08da4cac KH |
1724 | /* No - has the current target been set to something other than |
1725 | the default? */ | |
e50d8076 | 1726 | if (current_target != default_target) |
252b5132 | 1727 | output_target = current_target; |
e50d8076 | 1728 | |
08da4cac | 1729 | /* No - can we determine the format of the first input file? */ |
e50d8076 NC |
1730 | else |
1731 | { | |
1732 | output_target = get_first_input_target (); | |
1733 | ||
1734 | /* Failed - use the default output target. */ | |
1735 | if (output_target == NULL) | |
1736 | output_target = default_target; | |
1737 | } | |
1738 | } | |
5f992e62 | 1739 | |
08da4cac KH |
1740 | /* Has the user requested a particular endianness on the command |
1741 | line? */ | |
e50d8076 NC |
1742 | if (command_line.endian != ENDIAN_UNSET) |
1743 | { | |
08da4cac | 1744 | const bfd_target *target; |
1b69a0bf | 1745 | enum bfd_endian desired_endian; |
e50d8076 NC |
1746 | |
1747 | /* Get the chosen target. */ | |
5f992e62 | 1748 | target = bfd_search_for_target (get_target, (PTR) output_target); |
e50d8076 | 1749 | |
c13b1b77 NC |
1750 | /* If the target is not supported, we cannot do anything. */ |
1751 | if (target != NULL) | |
e50d8076 | 1752 | { |
c13b1b77 NC |
1753 | if (command_line.endian == ENDIAN_BIG) |
1754 | desired_endian = BFD_ENDIAN_BIG; | |
e50d8076 | 1755 | else |
c13b1b77 | 1756 | desired_endian = BFD_ENDIAN_LITTLE; |
5f992e62 AM |
1757 | |
1758 | /* See if the target has the wrong endianness. This should | |
1759 | not happen if the linker script has provided big and | |
1760 | little endian alternatives, but some scrips don't do | |
1761 | this. */ | |
c13b1b77 | 1762 | if (target->byteorder != desired_endian) |
e50d8076 | 1763 | { |
c13b1b77 NC |
1764 | /* If it does, then see if the target provides |
1765 | an alternative with the correct endianness. */ | |
1766 | if (target->alternative_target != NULL | |
1767 | && (target->alternative_target->byteorder == desired_endian)) | |
1768 | output_target = target->alternative_target->name; | |
e50d8076 | 1769 | else |
c13b1b77 | 1770 | { |
5f992e62 AM |
1771 | /* Try to find a target as similar as possible to |
1772 | the default target, but which has the desired | |
1773 | endian characteristic. */ | |
1774 | (void) bfd_search_for_target (closest_target_match, (PTR) target); | |
1775 | ||
1776 | /* Oh dear - we could not find any targets that | |
1777 | satisfy our requirements. */ | |
c13b1b77 NC |
1778 | if (winner == NULL) |
1779 | einfo (_("%P: warning: could not find any targets that match endianness requirement\n")); | |
1780 | else | |
1781 | output_target = winner->name; | |
1782 | } | |
e50d8076 NC |
1783 | } |
1784 | } | |
252b5132 | 1785 | } |
5f992e62 | 1786 | |
252b5132 RH |
1787 | output = bfd_openw (name, output_target); |
1788 | ||
1789 | if (output == (bfd *) NULL) | |
1790 | { | |
1791 | if (bfd_get_error () == bfd_error_invalid_target) | |
e50d8076 NC |
1792 | einfo (_("%P%F: target %s not found\n"), output_target); |
1793 | ||
252b5132 RH |
1794 | einfo (_("%P%F: cannot open output file %s: %E\n"), name); |
1795 | } | |
1796 | ||
1797 | delete_output_file_on_failure = true; | |
1798 | ||
08da4cac KH |
1799 | #if 0 |
1800 | output->flags |= D_PAGED; | |
1801 | #endif | |
252b5132 RH |
1802 | |
1803 | if (! bfd_set_format (output, bfd_object)) | |
1804 | einfo (_("%P%F:%s: can not make object file: %E\n"), name); | |
1805 | if (! bfd_set_arch_mach (output, | |
1806 | ldfile_output_architecture, | |
1807 | ldfile_output_machine)) | |
1808 | einfo (_("%P%F:%s: can not set architecture: %E\n"), name); | |
1809 | ||
1810 | link_info.hash = bfd_link_hash_table_create (output); | |
1811 | if (link_info.hash == (struct bfd_link_hash_table *) NULL) | |
1812 | einfo (_("%P%F: can not create link hash table: %E\n")); | |
1813 | ||
1814 | bfd_set_gp_size (output, g_switch_value); | |
1815 | return output; | |
1816 | } | |
1817 | ||
252b5132 RH |
1818 | static void |
1819 | ldlang_open_output (statement) | |
08da4cac | 1820 | lang_statement_union_type *statement; |
252b5132 RH |
1821 | { |
1822 | switch (statement->header.type) | |
1823 | { | |
1824 | case lang_output_statement_enum: | |
1825 | ASSERT (output_bfd == (bfd *) NULL); | |
1826 | output_bfd = open_output (statement->output_statement.name); | |
1827 | ldemul_set_output_arch (); | |
1828 | if (config.magic_demand_paged && !link_info.relocateable) | |
1829 | output_bfd->flags |= D_PAGED; | |
1830 | else | |
1831 | output_bfd->flags &= ~D_PAGED; | |
1832 | if (config.text_read_only) | |
1833 | output_bfd->flags |= WP_TEXT; | |
1834 | else | |
1835 | output_bfd->flags &= ~WP_TEXT; | |
1836 | if (link_info.traditional_format) | |
1837 | output_bfd->flags |= BFD_TRADITIONAL_FORMAT; | |
1838 | else | |
1839 | output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; | |
1840 | break; | |
1841 | ||
1842 | case lang_target_statement_enum: | |
1843 | current_target = statement->target_statement.target; | |
1844 | break; | |
1845 | default: | |
1846 | break; | |
1847 | } | |
1848 | } | |
1849 | ||
1850 | /* Open all the input files. */ | |
1851 | ||
1852 | static void | |
1853 | open_input_bfds (s, force) | |
1854 | lang_statement_union_type *s; | |
1855 | boolean force; | |
1856 | { | |
1857 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
1858 | { | |
1859 | switch (s->header.type) | |
1860 | { | |
1861 | case lang_constructors_statement_enum: | |
1862 | open_input_bfds (constructor_list.head, force); | |
1863 | break; | |
1864 | case lang_output_section_statement_enum: | |
1865 | open_input_bfds (s->output_section_statement.children.head, force); | |
1866 | break; | |
1867 | case lang_wild_statement_enum: | |
08da4cac | 1868 | /* Maybe we should load the file's symbols. */ |
252b5132 RH |
1869 | if (s->wild_statement.filename |
1870 | && ! wildcardp (s->wild_statement.filename)) | |
1871 | (void) lookup_name (s->wild_statement.filename); | |
1872 | open_input_bfds (s->wild_statement.children.head, force); | |
1873 | break; | |
1874 | case lang_group_statement_enum: | |
1875 | { | |
1876 | struct bfd_link_hash_entry *undefs; | |
1877 | ||
1878 | /* We must continually search the entries in the group | |
08da4cac KH |
1879 | until no new symbols are added to the list of undefined |
1880 | symbols. */ | |
252b5132 RH |
1881 | |
1882 | do | |
1883 | { | |
1884 | undefs = link_info.hash->undefs_tail; | |
1885 | open_input_bfds (s->group_statement.children.head, true); | |
1886 | } | |
1887 | while (undefs != link_info.hash->undefs_tail); | |
1888 | } | |
1889 | break; | |
1890 | case lang_target_statement_enum: | |
1891 | current_target = s->target_statement.target; | |
1892 | break; | |
1893 | case lang_input_statement_enum: | |
e50d8076 | 1894 | if (s->input_statement.real) |
252b5132 RH |
1895 | { |
1896 | lang_statement_list_type add; | |
1897 | ||
1898 | s->input_statement.target = current_target; | |
1899 | ||
1900 | /* If we are being called from within a group, and this | |
1901 | is an archive which has already been searched, then | |
cd4c806a L |
1902 | force it to be researched unless the whole archive |
1903 | has been loaded already. */ | |
252b5132 | 1904 | if (force |
cd4c806a | 1905 | && !s->input_statement.whole_archive |
252b5132 RH |
1906 | && s->input_statement.loaded |
1907 | && bfd_check_format (s->input_statement.the_bfd, | |
1908 | bfd_archive)) | |
1909 | s->input_statement.loaded = false; | |
1910 | ||
1911 | lang_list_init (&add); | |
1912 | ||
1913 | load_symbols (&s->input_statement, &add); | |
1914 | ||
1915 | if (add.head != NULL) | |
1916 | { | |
1917 | *add.tail = s->next; | |
1918 | s->next = add.head; | |
1919 | } | |
1920 | } | |
1921 | break; | |
1922 | default: | |
1923 | break; | |
1924 | } | |
1925 | } | |
1926 | } | |
1927 | ||
08da4cac KH |
1928 | /* If there are [COMMONS] statements, put a wild one into the bss |
1929 | section. */ | |
252b5132 RH |
1930 | |
1931 | static void | |
1932 | lang_reasonable_defaults () | |
1933 | { | |
1934 | #if 0 | |
1935 | lang_output_section_statement_lookup (".text"); | |
1936 | lang_output_section_statement_lookup (".data"); | |
1937 | ||
08da4cac | 1938 | default_common_section = lang_output_section_statement_lookup (".bss"); |
252b5132 | 1939 | |
252b5132 RH |
1940 | if (placed_commons == false) |
1941 | { | |
1942 | lang_wild_statement_type *new = | |
1943 | new_stat (lang_wild_statement, | |
1944 | &default_common_section->children); | |
1945 | ||
1946 | new->section_name = "COMMON"; | |
1947 | new->filename = (char *) NULL; | |
1948 | lang_list_init (&new->children); | |
1949 | } | |
1950 | #endif | |
252b5132 RH |
1951 | } |
1952 | ||
08da4cac KH |
1953 | /* Add the supplied name to the symbol table as an undefined reference. |
1954 | Remove items from the chain as we open input bfds. */ | |
252b5132 RH |
1955 | typedef struct ldlang_undef_chain_list |
1956 | { | |
1957 | struct ldlang_undef_chain_list *next; | |
1958 | char *name; | |
1959 | } ldlang_undef_chain_list_type; | |
1960 | ||
1961 | static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head; | |
1962 | ||
1963 | void | |
1964 | ldlang_add_undef (name) | |
5f992e62 | 1965 | const char *const name; |
252b5132 RH |
1966 | { |
1967 | ldlang_undef_chain_list_type *new = | |
1968 | ((ldlang_undef_chain_list_type *) | |
1969 | stat_alloc (sizeof (ldlang_undef_chain_list_type))); | |
1970 | ||
1971 | new->next = ldlang_undef_chain_list_head; | |
1972 | ldlang_undef_chain_list_head = new; | |
1973 | ||
1974 | new->name = buystring (name); | |
1975 | } | |
1976 | ||
1977 | /* Run through the list of undefineds created above and place them | |
1978 | into the linker hash table as undefined symbols belonging to the | |
08da4cac KH |
1979 | script file. */ |
1980 | ||
252b5132 RH |
1981 | static void |
1982 | lang_place_undefineds () | |
1983 | { | |
1984 | ldlang_undef_chain_list_type *ptr; | |
1985 | ||
1986 | for (ptr = ldlang_undef_chain_list_head; | |
1987 | ptr != (ldlang_undef_chain_list_type *) NULL; | |
1988 | ptr = ptr->next) | |
1989 | { | |
1990 | struct bfd_link_hash_entry *h; | |
1991 | ||
1992 | h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true); | |
1993 | if (h == (struct bfd_link_hash_entry *) NULL) | |
1994 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1995 | if (h->type == bfd_link_hash_new) | |
1996 | { | |
1997 | h->type = bfd_link_hash_undefined; | |
1998 | h->u.undef.abfd = NULL; | |
1999 | bfd_link_add_undef (link_info.hash, h); | |
2000 | } | |
2001 | } | |
2002 | } | |
2003 | ||
08da4cac KH |
2004 | /* Open input files and attatch to output sections. */ |
2005 | ||
252b5132 RH |
2006 | static void |
2007 | map_input_to_output_sections (s, target, output_section_statement) | |
08da4cac | 2008 | lang_statement_union_type *s; |
5f992e62 | 2009 | const char *target; |
08da4cac | 2010 | lang_output_section_statement_type *output_section_statement; |
252b5132 RH |
2011 | { |
2012 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
2013 | { | |
2014 | switch (s->header.type) | |
2015 | { | |
2016 | ||
252b5132 RH |
2017 | case lang_wild_statement_enum: |
2018 | wild (&s->wild_statement, s->wild_statement.section_name, | |
2019 | s->wild_statement.filename, target, | |
2020 | output_section_statement); | |
2021 | ||
2022 | break; | |
2023 | case lang_constructors_statement_enum: | |
2024 | map_input_to_output_sections (constructor_list.head, | |
2025 | target, | |
2026 | output_section_statement); | |
2027 | break; | |
2028 | case lang_output_section_statement_enum: | |
2029 | map_input_to_output_sections (s->output_section_statement.children.head, | |
2030 | target, | |
2031 | &s->output_section_statement); | |
2032 | break; | |
2033 | case lang_output_statement_enum: | |
2034 | break; | |
2035 | case lang_target_statement_enum: | |
2036 | target = s->target_statement.target; | |
2037 | break; | |
2038 | case lang_group_statement_enum: | |
2039 | map_input_to_output_sections (s->group_statement.children.head, | |
2040 | target, | |
2041 | output_section_statement); | |
2042 | break; | |
2043 | case lang_fill_statement_enum: | |
2044 | case lang_input_section_enum: | |
2045 | case lang_object_symbols_statement_enum: | |
2046 | case lang_data_statement_enum: | |
2047 | case lang_reloc_statement_enum: | |
2048 | case lang_padding_statement_enum: | |
2049 | case lang_input_statement_enum: | |
2050 | if (output_section_statement != NULL | |
2051 | && output_section_statement->bfd_section == NULL) | |
2052 | init_os (output_section_statement); | |
2053 | break; | |
2054 | case lang_assignment_statement_enum: | |
2055 | if (output_section_statement != NULL | |
2056 | && output_section_statement->bfd_section == NULL) | |
2057 | init_os (output_section_statement); | |
2058 | ||
2059 | /* Make sure that any sections mentioned in the assignment | |
08da4cac | 2060 | are initialized. */ |
252b5132 RH |
2061 | exp_init_os (s->assignment_statement.exp); |
2062 | break; | |
2063 | case lang_afile_asection_pair_statement_enum: | |
2064 | FAIL (); | |
2065 | break; | |
2066 | case lang_address_statement_enum: | |
08da4cac | 2067 | /* Mark the specified section with the supplied address. */ |
252b5132 RH |
2068 | { |
2069 | lang_output_section_statement_type *os = | |
2070 | lang_output_section_statement_lookup | |
2071 | (s->address_statement.section_name); | |
2072 | ||
2073 | if (os->bfd_section == NULL) | |
2074 | init_os (os); | |
2075 | os->addr_tree = s->address_statement.address; | |
2076 | } | |
2077 | break; | |
2078 | } | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | static void | |
2083 | print_output_section_statement (output_section_statement) | |
08da4cac | 2084 | lang_output_section_statement_type *output_section_statement; |
252b5132 RH |
2085 | { |
2086 | asection *section = output_section_statement->bfd_section; | |
2087 | int len; | |
2088 | ||
2089 | if (output_section_statement != abs_output_section) | |
2090 | { | |
2091 | minfo ("\n%s", output_section_statement->name); | |
2092 | ||
2093 | if (section != NULL) | |
2094 | { | |
2095 | print_dot = section->vma; | |
2096 | ||
2097 | len = strlen (output_section_statement->name); | |
2098 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2099 | { | |
2100 | print_nl (); | |
2101 | len = 0; | |
2102 | } | |
2103 | while (len < SECTION_NAME_MAP_LENGTH) | |
2104 | { | |
2105 | print_space (); | |
2106 | ++len; | |
2107 | } | |
2108 | ||
2109 | minfo ("0x%V %W", section->vma, section->_raw_size); | |
2110 | ||
2111 | if (output_section_statement->load_base != NULL) | |
2112 | { | |
2113 | bfd_vma addr; | |
2114 | ||
2115 | addr = exp_get_abs_int (output_section_statement->load_base, 0, | |
2116 | "load base", lang_final_phase_enum); | |
2117 | minfo (_(" load address 0x%V"), addr); | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | print_nl (); | |
2122 | } | |
2123 | ||
2124 | print_statement_list (output_section_statement->children.head, | |
2125 | output_section_statement); | |
2126 | } | |
2127 | ||
2128 | static void | |
2129 | print_assignment (assignment, output_section) | |
08da4cac KH |
2130 | lang_assignment_statement_type *assignment; |
2131 | lang_output_section_statement_type *output_section; | |
252b5132 RH |
2132 | { |
2133 | int i; | |
2134 | etree_value_type result; | |
2135 | ||
2136 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2137 | print_space (); | |
2138 | ||
2139 | result = exp_fold_tree (assignment->exp->assign.src, output_section, | |
2140 | lang_final_phase_enum, print_dot, &print_dot); | |
2141 | if (result.valid_p) | |
2142 | minfo ("0x%V", result.value + result.section->bfd_section->vma); | |
2143 | else | |
2144 | { | |
2145 | minfo ("*undef* "); | |
2146 | #ifdef BFD64 | |
2147 | minfo (" "); | |
2148 | #endif | |
2149 | } | |
2150 | ||
2151 | minfo (" "); | |
2152 | ||
2153 | exp_print_tree (assignment->exp); | |
2154 | ||
2155 | print_nl (); | |
2156 | } | |
2157 | ||
2158 | static void | |
2159 | print_input_statement (statm) | |
08da4cac | 2160 | lang_input_statement_type *statm; |
252b5132 RH |
2161 | { |
2162 | if (statm->filename != (char *) NULL) | |
2163 | { | |
2164 | fprintf (config.map_file, "LOAD %s\n", statm->filename); | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | /* Print all symbols defined in a particular section. This is called | |
2169 | via bfd_link_hash_traverse. */ | |
2170 | ||
5f992e62 | 2171 | static boolean |
252b5132 RH |
2172 | print_one_symbol (hash_entry, ptr) |
2173 | struct bfd_link_hash_entry *hash_entry; | |
2174 | PTR ptr; | |
2175 | { | |
2176 | asection *sec = (asection *) ptr; | |
2177 | ||
2178 | if ((hash_entry->type == bfd_link_hash_defined | |
2179 | || hash_entry->type == bfd_link_hash_defweak) | |
2180 | && sec == hash_entry->u.def.section) | |
2181 | { | |
2182 | int i; | |
2183 | ||
2184 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2185 | print_space (); | |
2186 | minfo ("0x%V ", | |
2187 | (hash_entry->u.def.value | |
2188 | + hash_entry->u.def.section->output_offset | |
2189 | + hash_entry->u.def.section->output_section->vma)); | |
2190 | ||
2191 | minfo (" %T\n", hash_entry->root.string); | |
2192 | } | |
2193 | ||
2194 | return true; | |
2195 | } | |
2196 | ||
2197 | /* Print information about an input section to the map file. */ | |
2198 | ||
2199 | static void | |
2200 | print_input_section (in) | |
08da4cac | 2201 | lang_input_section_type *in; |
252b5132 RH |
2202 | { |
2203 | asection *i = in->section; | |
2204 | bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; | |
5f992e62 | 2205 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
f6af82bd | 2206 | ldfile_output_machine); |
252b5132 RH |
2207 | if (size != 0) |
2208 | { | |
2209 | print_space (); | |
2210 | ||
2211 | minfo ("%s", i->name); | |
2212 | ||
2213 | if (i->output_section != NULL) | |
2214 | { | |
2215 | int len; | |
2216 | ||
2217 | len = 1 + strlen (i->name); | |
2218 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
2219 | { | |
2220 | print_nl (); | |
2221 | len = 0; | |
2222 | } | |
2223 | while (len < SECTION_NAME_MAP_LENGTH) | |
2224 | { | |
2225 | print_space (); | |
2226 | ++len; | |
2227 | } | |
2228 | ||
2229 | minfo ("0x%V %W %B\n", | |
4cbfc3ac | 2230 | i->output_section->vma + i->output_offset, size / opb, |
252b5132 RH |
2231 | i->owner); |
2232 | ||
2233 | if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size) | |
2234 | { | |
2235 | len = SECTION_NAME_MAP_LENGTH + 3; | |
2236 | #ifdef BFD64 | |
2237 | len += 16; | |
2238 | #else | |
2239 | len += 8; | |
2240 | #endif | |
2241 | while (len > 0) | |
2242 | { | |
2243 | print_space (); | |
2244 | --len; | |
2245 | } | |
2246 | ||
2247 | minfo (_("%W (size before relaxing)\n"), i->_raw_size); | |
2248 | } | |
2249 | ||
2250 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i); | |
2251 | ||
4cbfc3ac | 2252 | print_dot = i->output_section->vma + i->output_offset + size / opb; |
252b5132 RH |
2253 | } |
2254 | } | |
2255 | } | |
2256 | ||
2257 | static void | |
2258 | print_fill_statement (fill) | |
08da4cac | 2259 | lang_fill_statement_type *fill; |
252b5132 RH |
2260 | { |
2261 | fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill); | |
2262 | } | |
2263 | ||
2264 | static void | |
2265 | print_data_statement (data) | |
08da4cac | 2266 | lang_data_statement_type *data; |
252b5132 RH |
2267 | { |
2268 | int i; | |
2269 | bfd_vma addr; | |
2270 | bfd_size_type size; | |
2271 | const char *name; | |
5f992e62 | 2272 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
f6af82bd | 2273 | ldfile_output_machine); |
252b5132 RH |
2274 | |
2275 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2276 | print_space (); | |
2277 | ||
2278 | addr = data->output_vma; | |
2279 | if (data->output_section != NULL) | |
2280 | addr += data->output_section->vma; | |
2281 | ||
2282 | switch (data->type) | |
2283 | { | |
2284 | default: | |
2285 | abort (); | |
2286 | case BYTE: | |
2287 | size = BYTE_SIZE; | |
2288 | name = "BYTE"; | |
2289 | break; | |
2290 | case SHORT: | |
2291 | size = SHORT_SIZE; | |
2292 | name = "SHORT"; | |
2293 | break; | |
2294 | case LONG: | |
2295 | size = LONG_SIZE; | |
2296 | name = "LONG"; | |
2297 | break; | |
2298 | case QUAD: | |
2299 | size = QUAD_SIZE; | |
2300 | name = "QUAD"; | |
2301 | break; | |
2302 | case SQUAD: | |
2303 | size = QUAD_SIZE; | |
2304 | name = "SQUAD"; | |
2305 | break; | |
2306 | } | |
2307 | ||
2308 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); | |
2309 | ||
2310 | if (data->exp->type.node_class != etree_value) | |
2311 | { | |
2312 | print_space (); | |
2313 | exp_print_tree (data->exp); | |
2314 | } | |
2315 | ||
2316 | print_nl (); | |
2317 | ||
4cbfc3ac TW |
2318 | print_dot = addr + size / opb; |
2319 | ||
252b5132 RH |
2320 | } |
2321 | ||
2322 | /* Print an address statement. These are generated by options like | |
2323 | -Ttext. */ | |
2324 | ||
2325 | static void | |
2326 | print_address_statement (address) | |
2327 | lang_address_statement_type *address; | |
2328 | { | |
2329 | minfo (_("Address of section %s set to "), address->section_name); | |
2330 | exp_print_tree (address->address); | |
2331 | print_nl (); | |
2332 | } | |
2333 | ||
2334 | /* Print a reloc statement. */ | |
2335 | ||
2336 | static void | |
2337 | print_reloc_statement (reloc) | |
2338 | lang_reloc_statement_type *reloc; | |
2339 | { | |
2340 | int i; | |
2341 | bfd_vma addr; | |
2342 | bfd_size_type size; | |
5f992e62 AM |
2343 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2344 | ldfile_output_machine); | |
252b5132 RH |
2345 | |
2346 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
2347 | print_space (); | |
2348 | ||
2349 | addr = reloc->output_vma; | |
2350 | if (reloc->output_section != NULL) | |
2351 | addr += reloc->output_section->vma; | |
2352 | ||
2353 | size = bfd_get_reloc_size (reloc->howto); | |
2354 | ||
2355 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); | |
2356 | ||
2357 | if (reloc->name != NULL) | |
2358 | minfo ("%s+", reloc->name); | |
2359 | else | |
2360 | minfo ("%s+", reloc->section->name); | |
2361 | ||
2362 | exp_print_tree (reloc->addend_exp); | |
2363 | ||
2364 | print_nl (); | |
2365 | ||
4cbfc3ac | 2366 | print_dot = addr + size / opb; |
5f992e62 | 2367 | } |
252b5132 RH |
2368 | |
2369 | static void | |
2370 | print_padding_statement (s) | |
2371 | lang_padding_statement_type *s; | |
2372 | { | |
2373 | int len; | |
2374 | bfd_vma addr; | |
5f992e62 AM |
2375 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2376 | ldfile_output_machine); | |
252b5132 RH |
2377 | |
2378 | minfo (" *fill*"); | |
2379 | ||
2380 | len = sizeof " *fill*" - 1; | |
2381 | while (len < SECTION_NAME_MAP_LENGTH) | |
2382 | { | |
2383 | print_space (); | |
2384 | ++len; | |
2385 | } | |
2386 | ||
2387 | addr = s->output_offset; | |
2388 | if (s->output_section != NULL) | |
2389 | addr += s->output_section->vma; | |
2390 | minfo ("0x%V %W", addr, s->size); | |
2391 | ||
2392 | if (s->fill != 0) | |
2393 | minfo (" %u", s->fill); | |
2394 | ||
2395 | print_nl (); | |
2396 | ||
4cbfc3ac | 2397 | print_dot = addr + s->size / opb; |
252b5132 RH |
2398 | } |
2399 | ||
2400 | static void | |
2401 | print_wild_statement (w, os) | |
08da4cac KH |
2402 | lang_wild_statement_type *w; |
2403 | lang_output_section_statement_type *os; | |
252b5132 RH |
2404 | { |
2405 | print_space (); | |
2406 | ||
2407 | if (w->filenames_sorted) | |
2408 | minfo ("SORT("); | |
18625d54 CM |
2409 | if (w->exclude_filename_list != NULL) |
2410 | { | |
2411 | name_list *tmp; | |
2412 | minfo ("EXCLUDE_FILE ( %s", w->exclude_filename_list->name); | |
08da4cac KH |
2413 | for (tmp = w->exclude_filename_list->next; tmp; tmp = tmp->next) |
2414 | minfo (", %s", tmp->name); | |
18625d54 | 2415 | minfo (")"); |
08da4cac KH |
2416 | } |
2417 | if (w->filename != NULL) | |
252b5132 RH |
2418 | minfo ("%s", w->filename); |
2419 | else | |
2420 | minfo ("*"); | |
2421 | if (w->filenames_sorted) | |
2422 | minfo (")"); | |
2423 | ||
2424 | minfo ("("); | |
2425 | if (w->sections_sorted) | |
2426 | minfo ("SORT("); | |
2427 | if (w->section_name != NULL) | |
2428 | minfo ("%s", w->section_name); | |
2429 | else | |
2430 | minfo ("*"); | |
2431 | if (w->sections_sorted) | |
2432 | minfo (")"); | |
2433 | minfo (")"); | |
2434 | ||
2435 | print_nl (); | |
2436 | ||
2437 | print_statement_list (w->children.head, os); | |
2438 | } | |
2439 | ||
2440 | /* Print a group statement. */ | |
2441 | ||
2442 | static void | |
2443 | print_group (s, os) | |
2444 | lang_group_statement_type *s; | |
2445 | lang_output_section_statement_type *os; | |
2446 | { | |
2447 | fprintf (config.map_file, "START GROUP\n"); | |
2448 | print_statement_list (s->children.head, os); | |
2449 | fprintf (config.map_file, "END GROUP\n"); | |
2450 | } | |
2451 | ||
2452 | /* Print the list of statements in S. | |
2453 | This can be called for any statement type. */ | |
2454 | ||
2455 | static void | |
2456 | print_statement_list (s, os) | |
2457 | lang_statement_union_type *s; | |
2458 | lang_output_section_statement_type *os; | |
2459 | { | |
2460 | while (s != NULL) | |
2461 | { | |
2462 | print_statement (s, os); | |
2463 | s = s->next; | |
2464 | } | |
2465 | } | |
2466 | ||
2467 | /* Print the first statement in statement list S. | |
2468 | This can be called for any statement type. */ | |
2469 | ||
2470 | static void | |
2471 | print_statement (s, os) | |
2472 | lang_statement_union_type *s; | |
2473 | lang_output_section_statement_type *os; | |
2474 | { | |
2475 | switch (s->header.type) | |
2476 | { | |
2477 | default: | |
2478 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
2479 | FAIL (); | |
2480 | break; | |
2481 | case lang_constructors_statement_enum: | |
2482 | if (constructor_list.head != NULL) | |
2483 | { | |
2484 | if (constructors_sorted) | |
2485 | minfo (" SORT (CONSTRUCTORS)\n"); | |
2486 | else | |
2487 | minfo (" CONSTRUCTORS\n"); | |
2488 | print_statement_list (constructor_list.head, os); | |
2489 | } | |
2490 | break; | |
2491 | case lang_wild_statement_enum: | |
2492 | print_wild_statement (&s->wild_statement, os); | |
2493 | break; | |
2494 | case lang_address_statement_enum: | |
2495 | print_address_statement (&s->address_statement); | |
2496 | break; | |
2497 | case lang_object_symbols_statement_enum: | |
2498 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
2499 | break; | |
2500 | case lang_fill_statement_enum: | |
2501 | print_fill_statement (&s->fill_statement); | |
2502 | break; | |
2503 | case lang_data_statement_enum: | |
2504 | print_data_statement (&s->data_statement); | |
2505 | break; | |
2506 | case lang_reloc_statement_enum: | |
2507 | print_reloc_statement (&s->reloc_statement); | |
2508 | break; | |
2509 | case lang_input_section_enum: | |
2510 | print_input_section (&s->input_section); | |
2511 | break; | |
2512 | case lang_padding_statement_enum: | |
2513 | print_padding_statement (&s->padding_statement); | |
2514 | break; | |
2515 | case lang_output_section_statement_enum: | |
2516 | print_output_section_statement (&s->output_section_statement); | |
2517 | break; | |
2518 | case lang_assignment_statement_enum: | |
2519 | print_assignment (&s->assignment_statement, os); | |
2520 | break; | |
2521 | case lang_target_statement_enum: | |
2522 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
2523 | break; | |
2524 | case lang_output_statement_enum: | |
2525 | minfo ("OUTPUT(%s", s->output_statement.name); | |
2526 | if (output_target != NULL) | |
2527 | minfo (" %s", output_target); | |
2528 | minfo (")\n"); | |
2529 | break; | |
2530 | case lang_input_statement_enum: | |
2531 | print_input_statement (&s->input_statement); | |
2532 | break; | |
2533 | case lang_group_statement_enum: | |
2534 | print_group (&s->group_statement, os); | |
2535 | break; | |
2536 | case lang_afile_asection_pair_statement_enum: | |
2537 | FAIL (); | |
2538 | break; | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | static void | |
2543 | print_statements () | |
2544 | { | |
2545 | print_statement_list (statement_list.head, abs_output_section); | |
2546 | } | |
2547 | ||
2548 | /* Print the first N statements in statement list S to STDERR. | |
2549 | If N == 0, nothing is printed. | |
2550 | If N < 0, the entire list is printed. | |
2551 | Intended to be called from GDB. */ | |
2552 | ||
2553 | void | |
2554 | dprint_statement (s, n) | |
08da4cac | 2555 | lang_statement_union_type *s; |
252b5132 RH |
2556 | int n; |
2557 | { | |
2558 | FILE *map_save = config.map_file; | |
2559 | ||
2560 | config.map_file = stderr; | |
2561 | ||
2562 | if (n < 0) | |
2563 | print_statement_list (s, abs_output_section); | |
2564 | else | |
2565 | { | |
2566 | while (s && --n >= 0) | |
2567 | { | |
2568 | print_statement (s, abs_output_section); | |
2569 | s = s->next; | |
2570 | } | |
2571 | } | |
2572 | ||
2573 | config.map_file = map_save; | |
2574 | } | |
2575 | ||
2576 | static bfd_vma | |
2577 | insert_pad (this_ptr, fill, power, output_section_statement, dot) | |
08da4cac | 2578 | lang_statement_union_type **this_ptr; |
252b5132 RH |
2579 | fill_type fill; |
2580 | unsigned int power; | |
08da4cac | 2581 | asection *output_section_statement; |
252b5132 RH |
2582 | bfd_vma dot; |
2583 | { | |
2584 | /* Align this section first to the | |
2585 | input sections requirement, then | |
2586 | to the output section's requirement. | |
2587 | If this alignment is > than any seen before, | |
2588 | then record it too. Perform the alignment by | |
08da4cac | 2589 | inserting a magic 'padding' statement. */ |
252b5132 | 2590 | |
5f992e62 AM |
2591 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2592 | ldfile_output_machine); | |
252b5132 RH |
2593 | unsigned int alignment_needed = align_power (dot, power) - dot; |
2594 | ||
2595 | if (alignment_needed != 0) | |
2596 | { | |
2597 | lang_statement_union_type *new = | |
2598 | ((lang_statement_union_type *) | |
2599 | stat_alloc (sizeof (lang_padding_statement_type))); | |
2600 | ||
08da4cac | 2601 | /* Link into existing chain. */ |
252b5132 RH |
2602 | new->header.next = *this_ptr; |
2603 | *this_ptr = new; | |
2604 | new->header.type = lang_padding_statement_enum; | |
2605 | new->padding_statement.output_section = output_section_statement; | |
2606 | new->padding_statement.output_offset = | |
2607 | dot - output_section_statement->vma; | |
2608 | new->padding_statement.fill = fill; | |
4cbfc3ac | 2609 | new->padding_statement.size = alignment_needed * opb; |
252b5132 RH |
2610 | } |
2611 | ||
08da4cac | 2612 | /* Remember the most restrictive alignment. */ |
252b5132 RH |
2613 | if (power > output_section_statement->alignment_power) |
2614 | { | |
2615 | output_section_statement->alignment_power = power; | |
2616 | } | |
4cbfc3ac | 2617 | output_section_statement->_raw_size += alignment_needed * opb; |
252b5132 | 2618 | |
4cbfc3ac | 2619 | return dot + alignment_needed; |
252b5132 RH |
2620 | } |
2621 | ||
08da4cac KH |
2622 | /* Work out how much this section will move the dot point. */ |
2623 | ||
252b5132 RH |
2624 | static bfd_vma |
2625 | size_input_section (this_ptr, output_section_statement, fill, dot, relax) | |
08da4cac KH |
2626 | lang_statement_union_type **this_ptr; |
2627 | lang_output_section_statement_type *output_section_statement; | |
252b5132 RH |
2628 | fill_type fill; |
2629 | bfd_vma dot; | |
87f2a346 | 2630 | boolean relax ATTRIBUTE_UNUSED; |
252b5132 RH |
2631 | { |
2632 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
2633 | asection *i = is->section; | |
5f992e62 AM |
2634 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
2635 | ldfile_output_machine); | |
252b5132 RH |
2636 | |
2637 | if (is->ifile->just_syms_flag == false) | |
2638 | { | |
2639 | if (output_section_statement->subsection_alignment != -1) | |
2640 | i->alignment_power = | |
2641 | output_section_statement->subsection_alignment; | |
2642 | ||
2643 | dot = insert_pad (this_ptr, fill, i->alignment_power, | |
2644 | output_section_statement->bfd_section, dot); | |
2645 | ||
08da4cac | 2646 | /* Remember where in the output section this input section goes. */ |
252b5132 RH |
2647 | |
2648 | i->output_offset = dot - output_section_statement->bfd_section->vma; | |
2649 | ||
08da4cac | 2650 | /* Mark how big the output section must be to contain this now. */ |
252b5132 | 2651 | if (i->_cooked_size != 0) |
4cbfc3ac | 2652 | dot += i->_cooked_size / opb; |
252b5132 | 2653 | else |
4cbfc3ac | 2654 | dot += i->_raw_size / opb; |
5f992e62 | 2655 | output_section_statement->bfd_section->_raw_size = |
08da4cac | 2656 | (dot - output_section_statement->bfd_section->vma) * opb; |
252b5132 RH |
2657 | } |
2658 | else | |
2659 | { | |
2660 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; | |
2661 | } | |
2662 | ||
2663 | return dot; | |
2664 | } | |
2665 | ||
33275c22 | 2666 | #define IGNORE_SECTION(bfd, s) \ |
50e05050 | 2667 | (((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) != (SEC_ALLOC | SEC_LOAD)) \ |
33275c22 NC |
2668 | || bfd_section_size (bfd, s) == 0) |
2669 | ||
252b5132 RH |
2670 | /* Check to see if any allocated sections overlap with other allocated |
2671 | sections. This can happen when the linker script specifically specifies | |
2672 | the output section addresses of the two sections. */ | |
08da4cac | 2673 | |
252b5132 RH |
2674 | static void |
2675 | lang_check_section_addresses () | |
2676 | { | |
08da4cac | 2677 | asection *s; |
f6af82bd | 2678 | unsigned opb = bfd_octets_per_byte (output_bfd); |
252b5132 RH |
2679 | |
2680 | /* Scan all sections in the output list. */ | |
2681 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
33275c22 | 2682 | { |
08da4cac | 2683 | asection *os; |
5f992e62 | 2684 | |
33275c22 NC |
2685 | /* Ignore sections which are not loaded or which have no contents. */ |
2686 | if (IGNORE_SECTION (output_bfd, s)) | |
2687 | continue; | |
5f992e62 | 2688 | |
33275c22 NC |
2689 | /* Once we reach section 's' stop our seach. This prevents two |
2690 | warning messages from being produced, one for 'section A overlaps | |
2691 | section B' and one for 'section B overlaps section A'. */ | |
2692 | for (os = output_bfd->sections; os != s; os = os->next) | |
2693 | { | |
2694 | bfd_vma s_start; | |
2695 | bfd_vma s_end; | |
2696 | bfd_vma os_start; | |
2697 | bfd_vma os_end; | |
5f992e62 | 2698 | |
33275c22 NC |
2699 | /* Only consider loadable sections with real contents. */ |
2700 | if (IGNORE_SECTION (output_bfd, os)) | |
2701 | continue; | |
252b5132 | 2702 | |
33275c22 NC |
2703 | /* We must check the sections' LMA addresses not their |
2704 | VMA addresses because overlay sections can have | |
2705 | overlapping VMAs but they must have distinct LMAs. */ | |
2706 | s_start = bfd_section_lma (output_bfd, s); | |
2707 | os_start = bfd_section_lma (output_bfd, os); | |
9e4ed18c TW |
2708 | s_end = s_start + bfd_section_size (output_bfd, s) / opb - 1; |
2709 | os_end = os_start + bfd_section_size (output_bfd, os) / opb - 1; | |
5f992e62 | 2710 | |
33275c22 NC |
2711 | /* Look for an overlap. */ |
2712 | if ((s_end < os_start) || (s_start > os_end)) | |
2713 | continue; | |
5f992e62 | 2714 | |
33275c22 | 2715 | einfo ( |
252b5132 | 2716 | _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"), |
33275c22 | 2717 | s->name, s_start, s_end, os->name, os_start, os_end); |
5f992e62 | 2718 | |
33275c22 NC |
2719 | /* Once we have found one overlap for this section, |
2720 | stop looking for others. */ | |
2721 | break; | |
2722 | } | |
2723 | } | |
252b5132 RH |
2724 | } |
2725 | ||
2726 | /* This variable indicates whether bfd_relax_section should be called | |
2727 | again. */ | |
2728 | ||
2729 | static boolean relax_again; | |
2730 | ||
562d3460 TW |
2731 | /* Make sure the new address is within the region. We explicitly permit the |
2732 | current address to be at the exact end of the region when the address is | |
2733 | non-zero, in case the region is at the end of addressable memory and the | |
5f992e62 | 2734 | calculation wraps around. */ |
562d3460 TW |
2735 | |
2736 | static void | |
2737 | os_region_check (os, region, tree, base) | |
08da4cac KH |
2738 | lang_output_section_statement_type *os; |
2739 | struct memory_region_struct *region; | |
2740 | etree_type *tree; | |
2741 | bfd_vma base; | |
562d3460 TW |
2742 | { |
2743 | if ((region->current < region->origin | |
2744 | || (region->current - region->origin > region->length)) | |
2745 | && ((region->current != region->origin + region->length) | |
2746 | || base == 0)) | |
2747 | { | |
2748 | if (tree != (etree_type *) NULL) | |
2749 | { | |
2750 | einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"), | |
2751 | region->current, | |
2752 | os->bfd_section->owner, | |
2753 | os->bfd_section->name, | |
2754 | region->name); | |
2755 | } | |
2756 | else | |
2757 | { | |
2758 | einfo (_("%X%P: region %s is full (%B section %s)\n"), | |
2759 | region->name, | |
2760 | os->bfd_section->owner, | |
2761 | os->bfd_section->name); | |
2762 | } | |
2763 | /* Reset the region pointer. */ | |
2764 | region->current = region->origin; | |
2765 | } | |
2766 | } | |
2767 | ||
252b5132 RH |
2768 | /* Set the sizes for all the output sections. */ |
2769 | ||
2770 | bfd_vma | |
2771 | lang_size_sections (s, output_section_statement, prev, fill, dot, relax) | |
08da4cac KH |
2772 | lang_statement_union_type *s; |
2773 | lang_output_section_statement_type *output_section_statement; | |
2774 | lang_statement_union_type **prev; | |
252b5132 RH |
2775 | fill_type fill; |
2776 | bfd_vma dot; | |
2777 | boolean relax; | |
2778 | { | |
5f992e62 | 2779 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
f6af82bd | 2780 | ldfile_output_machine); |
4cbfc3ac | 2781 | |
252b5132 RH |
2782 | /* Size up the sections from their constituent parts. */ |
2783 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
2784 | { | |
2785 | switch (s->header.type) | |
2786 | { | |
2787 | case lang_output_section_statement_enum: | |
2788 | { | |
2789 | bfd_vma after; | |
2790 | lang_output_section_statement_type *os = &s->output_section_statement; | |
2791 | ||
2792 | if (os->bfd_section == NULL) | |
2793 | /* This section was never actually created. */ | |
2794 | break; | |
2795 | ||
2796 | /* If this is a COFF shared library section, use the size and | |
2797 | address from the input section. FIXME: This is COFF | |
2798 | specific; it would be cleaner if there were some other way | |
2799 | to do this, but nothing simple comes to mind. */ | |
2800 | if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
2801 | { | |
08da4cac | 2802 | asection *input; |
252b5132 RH |
2803 | |
2804 | if (os->children.head == NULL | |
2805 | || os->children.head->next != NULL | |
2806 | || os->children.head->header.type != lang_input_section_enum) | |
2807 | einfo (_("%P%X: Internal error on COFF shared library section %s\n"), | |
2808 | os->name); | |
2809 | ||
2810 | input = os->children.head->input_section.section; | |
2811 | bfd_set_section_vma (os->bfd_section->owner, | |
2812 | os->bfd_section, | |
2813 | bfd_section_vma (input->owner, input)); | |
2814 | os->bfd_section->_raw_size = input->_raw_size; | |
2815 | break; | |
2816 | } | |
2817 | ||
2818 | if (bfd_is_abs_section (os->bfd_section)) | |
2819 | { | |
2820 | /* No matter what happens, an abs section starts at zero. */ | |
2821 | ASSERT (os->bfd_section->vma == 0); | |
2822 | } | |
2823 | else | |
2824 | { | |
2825 | if (os->addr_tree == (etree_type *) NULL) | |
2826 | { | |
2827 | /* No address specified for this section, get one | |
2828 | from the region specification. */ | |
2829 | if (os->region == (lang_memory_region_type *) NULL | |
2830 | || (((bfd_get_section_flags (output_bfd, os->bfd_section) | |
2831 | & (SEC_ALLOC | SEC_LOAD)) != 0) | |
2832 | && os->region->name[0] == '*' | |
2833 | && strcmp (os->region->name, "*default*") == 0)) | |
2834 | { | |
2835 | os->region = lang_memory_default (os->bfd_section); | |
2836 | } | |
2837 | ||
2838 | /* If a loadable section is using the default memory | |
2839 | region, and some non default memory regions were | |
2840 | defined, issue a warning. */ | |
2841 | if ((bfd_get_section_flags (output_bfd, os->bfd_section) | |
2842 | & (SEC_ALLOC | SEC_LOAD)) != 0 | |
2843 | && ! link_info.relocateable | |
2844 | && strcmp (os->region->name, "*default*") == 0 | |
2845 | && lang_memory_region_list != NULL | |
2846 | && (strcmp (lang_memory_region_list->name, "*default*") != 0 | |
2847 | || lang_memory_region_list->next != NULL)) | |
2848 | einfo (_("%P: warning: no memory region specified for section `%s'\n"), | |
2849 | bfd_get_section_name (output_bfd, os->bfd_section)); | |
2850 | ||
2851 | dot = os->region->current; | |
5f992e62 | 2852 | |
252b5132 RH |
2853 | if (os->section_alignment == -1) |
2854 | { | |
2855 | bfd_vma olddot; | |
2856 | ||
2857 | olddot = dot; | |
2858 | dot = align_power (dot, os->bfd_section->alignment_power); | |
2859 | ||
2860 | if (dot != olddot && config.warn_section_align) | |
2861 | einfo (_("%P: warning: changing start of section %s by %u bytes\n"), | |
2862 | os->name, (unsigned int) (dot - olddot)); | |
2863 | } | |
2864 | } | |
2865 | else | |
2866 | { | |
2867 | etree_value_type r; | |
2868 | ||
2869 | r = exp_fold_tree (os->addr_tree, | |
2870 | abs_output_section, | |
2871 | lang_allocating_phase_enum, | |
2872 | dot, &dot); | |
2873 | if (r.valid_p == false) | |
2874 | { | |
2875 | einfo (_("%F%S: non constant address expression for section %s\n"), | |
2876 | os->name); | |
2877 | } | |
2878 | dot = r.value + r.section->bfd_section->vma; | |
2879 | } | |
5f992e62 | 2880 | |
252b5132 RH |
2881 | /* The section starts here. |
2882 | First, align to what the section needs. */ | |
2883 | ||
2884 | if (os->section_alignment != -1) | |
2885 | dot = align_power (dot, os->section_alignment); | |
2886 | ||
2887 | bfd_set_section_vma (0, os->bfd_section, dot); | |
5f992e62 | 2888 | |
252b5132 RH |
2889 | os->bfd_section->output_offset = 0; |
2890 | } | |
2891 | ||
08da4cac KH |
2892 | (void) lang_size_sections (os->children.head, os, |
2893 | &os->children.head, | |
252b5132 | 2894 | os->fill, dot, relax); |
5f992e62 | 2895 | |
08da4cac KH |
2896 | /* Put the section within the requested block size, or |
2897 | align at the block boundary. */ | |
32edc927 TW |
2898 | after = ALIGN_N (os->bfd_section->vma |
2899 | + os->bfd_section->_raw_size / opb, | |
252b5132 RH |
2900 | /* The coercion here is important, see ld.h. */ |
2901 | (bfd_vma) os->block_value); | |
2902 | ||
2903 | if (bfd_is_abs_section (os->bfd_section)) | |
2904 | ASSERT (after == os->bfd_section->vma); | |
2905 | else | |
5f992e62 | 2906 | os->bfd_section->_raw_size = |
08da4cac | 2907 | (after - os->bfd_section->vma) * opb; |
4cbfc3ac | 2908 | dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb; |
252b5132 RH |
2909 | os->processed = true; |
2910 | ||
2911 | /* Update dot in the region ? | |
2912 | We only do this if the section is going to be allocated, | |
2913 | since unallocated sections do not contribute to the region's | |
13392b77 | 2914 | overall size in memory. |
5f992e62 | 2915 | |
cce4c4c5 NC |
2916 | If the SEC_NEVER_LOAD bit is not set, it will affect the |
2917 | addresses of sections after it. We have to update | |
2918 | dot. */ | |
252b5132 | 2919 | if (os->region != (lang_memory_region_type *) NULL |
cce4c4c5 NC |
2920 | && ((bfd_get_section_flags (output_bfd, os->bfd_section) |
2921 | & SEC_NEVER_LOAD) == 0 | |
2922 | || (bfd_get_section_flags (output_bfd, os->bfd_section) | |
2923 | & (SEC_ALLOC | SEC_LOAD)))) | |
252b5132 RH |
2924 | { |
2925 | os->region->current = dot; | |
5f992e62 | 2926 | |
562d3460 | 2927 | /* Make sure the new address is within the region. */ |
08da4cac KH |
2928 | os_region_check (os, os->region, os->addr_tree, |
2929 | os->bfd_section->vma); | |
2930 | ||
2931 | /* If there's no load address specified, use the run | |
2932 | region as the load region. */ | |
2933 | if (os->lma_region == NULL && os->load_base == NULL) | |
2934 | os->lma_region = os->region; | |
2935 | ||
2936 | if (os->lma_region != NULL) | |
2937 | { | |
2938 | if (os->load_base != NULL) | |
2939 | { | |
2940 | einfo (_("%X%P: use an absolute load address or a load memory region, not both\n")); | |
2941 | } | |
2942 | else | |
2943 | { | |
2944 | /* Don't allocate twice. */ | |
2945 | if (os->lma_region != os->region) | |
2946 | { | |
2947 | /* Set load_base, which will be handled later. */ | |
2948 | os->load_base = | |
2949 | exp_intop (os->lma_region->current); | |
2950 | os->lma_region->current += | |
2951 | os->bfd_section->_raw_size / opb; | |
2952 | os_region_check (os, os->lma_region, NULL, | |
2953 | os->bfd_section->lma); | |
2954 | } | |
2955 | } | |
2956 | } | |
252b5132 RH |
2957 | } |
2958 | } | |
2959 | break; | |
2960 | ||
2961 | case lang_constructors_statement_enum: | |
2962 | dot = lang_size_sections (constructor_list.head, | |
2963 | output_section_statement, | |
2964 | &s->wild_statement.children.head, | |
2965 | fill, | |
2966 | dot, relax); | |
2967 | break; | |
2968 | ||
2969 | case lang_data_statement_enum: | |
2970 | { | |
2971 | unsigned int size = 0; | |
2972 | ||
08da4cac KH |
2973 | s->data_statement.output_vma = |
2974 | dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
2975 | s->data_statement.output_section = |
2976 | output_section_statement->bfd_section; | |
2977 | ||
2978 | switch (s->data_statement.type) | |
2979 | { | |
08da4cac KH |
2980 | default: |
2981 | abort (); | |
252b5132 RH |
2982 | case QUAD: |
2983 | case SQUAD: | |
2984 | size = QUAD_SIZE; | |
2985 | break; | |
2986 | case LONG: | |
2987 | size = LONG_SIZE; | |
2988 | break; | |
2989 | case SHORT: | |
2990 | size = SHORT_SIZE; | |
2991 | break; | |
2992 | case BYTE: | |
2993 | size = BYTE_SIZE; | |
2994 | break; | |
2995 | } | |
08da4cac KH |
2996 | if (size < opb) |
2997 | size = opb; | |
4cbfc3ac | 2998 | dot += size / opb; |
252b5132 RH |
2999 | output_section_statement->bfd_section->_raw_size += size; |
3000 | /* The output section gets contents, and then we inspect for | |
3001 | any flags set in the input script which override any ALLOC. */ | |
3002 | output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; | |
08da4cac KH |
3003 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) |
3004 | { | |
3005 | output_section_statement->bfd_section->flags |= | |
3006 | SEC_ALLOC | SEC_LOAD; | |
3007 | } | |
252b5132 RH |
3008 | } |
3009 | break; | |
3010 | ||
3011 | case lang_reloc_statement_enum: | |
3012 | { | |
3013 | int size; | |
3014 | ||
3015 | s->reloc_statement.output_vma = | |
3016 | dot - output_section_statement->bfd_section->vma; | |
3017 | s->reloc_statement.output_section = | |
3018 | output_section_statement->bfd_section; | |
3019 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
4cbfc3ac | 3020 | dot += size / opb; |
252b5132 RH |
3021 | output_section_statement->bfd_section->_raw_size += size; |
3022 | } | |
3023 | break; | |
5f992e62 | 3024 | |
252b5132 RH |
3025 | case lang_wild_statement_enum: |
3026 | ||
3027 | dot = lang_size_sections (s->wild_statement.children.head, | |
3028 | output_section_statement, | |
3029 | &s->wild_statement.children.head, | |
252b5132 RH |
3030 | fill, dot, relax); |
3031 | ||
3032 | break; | |
3033 | ||
3034 | case lang_object_symbols_statement_enum: | |
3035 | link_info.create_object_symbols_section = | |
3036 | output_section_statement->bfd_section; | |
3037 | break; | |
3038 | case lang_output_statement_enum: | |
3039 | case lang_target_statement_enum: | |
3040 | break; | |
3041 | case lang_input_section_enum: | |
3042 | { | |
3043 | asection *i; | |
3044 | ||
3045 | i = (*prev)->input_section.section; | |
3046 | if (! relax) | |
3047 | { | |
3048 | if (i->_cooked_size == 0) | |
3049 | i->_cooked_size = i->_raw_size; | |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | boolean again; | |
3054 | ||
3055 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) | |
3056 | einfo (_("%P%F: can't relax section: %E\n")); | |
3057 | if (again) | |
3058 | relax_again = true; | |
3059 | } | |
3060 | dot = size_input_section (prev, | |
3061 | output_section_statement, | |
3062 | output_section_statement->fill, | |
3063 | dot, relax); | |
3064 | } | |
3065 | break; | |
3066 | case lang_input_statement_enum: | |
3067 | break; | |
3068 | case lang_fill_statement_enum: | |
08da4cac KH |
3069 | s->fill_statement.output_section = |
3070 | output_section_statement->bfd_section; | |
252b5132 RH |
3071 | |
3072 | fill = s->fill_statement.fill; | |
3073 | break; | |
3074 | case lang_assignment_statement_enum: | |
3075 | { | |
3076 | bfd_vma newdot = dot; | |
3077 | ||
3078 | exp_fold_tree (s->assignment_statement.exp, | |
3079 | output_section_statement, | |
3080 | lang_allocating_phase_enum, | |
3081 | dot, | |
3082 | &newdot); | |
3083 | ||
3084 | if (newdot != dot) | |
3085 | { | |
3086 | /* The assignment changed dot. Insert a pad. */ | |
3087 | if (output_section_statement == abs_output_section) | |
3088 | { | |
3089 | /* If we don't have an output section, then just adjust | |
3090 | the default memory address. */ | |
3091 | lang_memory_region_lookup ("*default*")->current = newdot; | |
3092 | } | |
3093 | else if (!relax) | |
3094 | { | |
3095 | lang_statement_union_type *new = | |
3096 | ((lang_statement_union_type *) | |
3097 | stat_alloc (sizeof (lang_padding_statement_type))); | |
3098 | ||
3099 | /* Link into existing chain. */ | |
3100 | new->header.next = *prev; | |
3101 | *prev = new; | |
3102 | new->header.type = lang_padding_statement_enum; | |
3103 | new->padding_statement.output_section = | |
3104 | output_section_statement->bfd_section; | |
3105 | new->padding_statement.output_offset = | |
3106 | dot - output_section_statement->bfd_section->vma; | |
3107 | new->padding_statement.fill = fill; | |
4cbfc3ac | 3108 | new->padding_statement.size = (newdot - dot) * opb; |
252b5132 RH |
3109 | output_section_statement->bfd_section->_raw_size += |
3110 | new->padding_statement.size; | |
3111 | } | |
3112 | ||
3113 | dot = newdot; | |
3114 | } | |
3115 | } | |
3116 | break; | |
3117 | ||
3118 | case lang_padding_statement_enum: | |
3119 | /* If we are relaxing, and this is not the first pass, some | |
3120 | padding statements may have been inserted during previous | |
3121 | passes. We may have to move the padding statement to a new | |
3122 | location if dot has a different value at this point in this | |
3123 | pass than it did at this point in the previous pass. */ | |
3124 | s->padding_statement.output_offset = | |
3125 | dot - output_section_statement->bfd_section->vma; | |
4cbfc3ac | 3126 | dot += s->padding_statement.size / opb; |
252b5132 RH |
3127 | output_section_statement->bfd_section->_raw_size += |
3128 | s->padding_statement.size; | |
3129 | break; | |
3130 | ||
3131 | case lang_group_statement_enum: | |
3132 | dot = lang_size_sections (s->group_statement.children.head, | |
3133 | output_section_statement, | |
3134 | &s->group_statement.children.head, | |
3135 | fill, dot, relax); | |
3136 | break; | |
3137 | ||
3138 | default: | |
3139 | FAIL (); | |
3140 | break; | |
3141 | ||
3142 | /* This can only get here when relaxing is turned on. */ | |
3143 | ||
3144 | case lang_address_statement_enum: | |
3145 | break; | |
3146 | } | |
3147 | prev = &s->header.next; | |
3148 | } | |
3149 | return dot; | |
3150 | } | |
3151 | ||
3152 | bfd_vma | |
3153 | lang_do_assignments (s, output_section_statement, fill, dot) | |
08da4cac KH |
3154 | lang_statement_union_type *s; |
3155 | lang_output_section_statement_type *output_section_statement; | |
252b5132 RH |
3156 | fill_type fill; |
3157 | bfd_vma dot; | |
3158 | { | |
5f992e62 AM |
3159 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
3160 | ldfile_output_machine); | |
4cbfc3ac | 3161 | |
252b5132 RH |
3162 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
3163 | { | |
3164 | switch (s->header.type) | |
3165 | { | |
3166 | case lang_constructors_statement_enum: | |
3167 | dot = lang_do_assignments (constructor_list.head, | |
3168 | output_section_statement, | |
3169 | fill, | |
3170 | dot); | |
3171 | break; | |
3172 | ||
3173 | case lang_output_section_statement_enum: | |
3174 | { | |
3175 | lang_output_section_statement_type *os = | |
3176 | &(s->output_section_statement); | |
3177 | ||
3178 | if (os->bfd_section != NULL) | |
3179 | { | |
3180 | dot = os->bfd_section->vma; | |
3181 | (void) lang_do_assignments (os->children.head, os, | |
3182 | os->fill, dot); | |
4cbfc3ac TW |
3183 | dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb; |
3184 | ||
252b5132 | 3185 | } |
c13b1b77 | 3186 | if (os->load_base) |
252b5132 RH |
3187 | { |
3188 | /* If nothing has been placed into the output section then | |
4de2d33d | 3189 | it won't have a bfd_section. */ |
5f992e62 | 3190 | if (os->bfd_section) |
252b5132 | 3191 | { |
5f992e62 | 3192 | os->bfd_section->lma |
08da4cac KH |
3193 | = exp_get_abs_int (os->load_base, 0, "load base", |
3194 | lang_final_phase_enum); | |
252b5132 RH |
3195 | } |
3196 | } | |
3197 | } | |
3198 | break; | |
3199 | case lang_wild_statement_enum: | |
3200 | ||
3201 | dot = lang_do_assignments (s->wild_statement.children.head, | |
3202 | output_section_statement, | |
3203 | fill, dot); | |
3204 | ||
3205 | break; | |
3206 | ||
3207 | case lang_object_symbols_statement_enum: | |
3208 | case lang_output_statement_enum: | |
3209 | case lang_target_statement_enum: | |
3210 | #if 0 | |
3211 | case lang_common_statement_enum: | |
3212 | #endif | |
3213 | break; | |
3214 | case lang_data_statement_enum: | |
3215 | { | |
3216 | etree_value_type value; | |
3217 | ||
3218 | value = exp_fold_tree (s->data_statement.exp, | |
3219 | abs_output_section, | |
3220 | lang_final_phase_enum, dot, &dot); | |
3221 | s->data_statement.value = value.value; | |
3222 | if (value.valid_p == false) | |
3223 | einfo (_("%F%P: invalid data statement\n")); | |
3224 | } | |
4cbfc3ac | 3225 | { |
f6af82bd | 3226 | unsigned int size; |
08da4cac KH |
3227 | switch (s->data_statement.type) |
3228 | { | |
3229 | default: | |
3230 | abort (); | |
3231 | case QUAD: | |
3232 | case SQUAD: | |
3233 | size = QUAD_SIZE; | |
3234 | break; | |
3235 | case LONG: | |
3236 | size = LONG_SIZE; | |
3237 | break; | |
3238 | case SHORT: | |
3239 | size = SHORT_SIZE; | |
3240 | break; | |
3241 | case BYTE: | |
3242 | size = BYTE_SIZE; | |
3243 | break; | |
3244 | } | |
3245 | if (size < opb) | |
3246 | size = opb; | |
3247 | dot += size / opb; | |
3248 | } | |
252b5132 RH |
3249 | break; |
3250 | ||
3251 | case lang_reloc_statement_enum: | |
3252 | { | |
3253 | etree_value_type value; | |
3254 | ||
3255 | value = exp_fold_tree (s->reloc_statement.addend_exp, | |
3256 | abs_output_section, | |
3257 | lang_final_phase_enum, dot, &dot); | |
3258 | s->reloc_statement.addend_value = value.value; | |
3259 | if (value.valid_p == false) | |
3260 | einfo (_("%F%P: invalid reloc statement\n")); | |
3261 | } | |
4cbfc3ac | 3262 | dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb; |
252b5132 RH |
3263 | break; |
3264 | ||
3265 | case lang_input_section_enum: | |
3266 | { | |
3267 | asection *in = s->input_section.section; | |
3268 | ||
3269 | if (in->_cooked_size != 0) | |
4cbfc3ac | 3270 | dot += in->_cooked_size / opb; |
252b5132 | 3271 | else |
4cbfc3ac | 3272 | dot += in->_raw_size / opb; |
252b5132 RH |
3273 | } |
3274 | break; | |
3275 | ||
3276 | case lang_input_statement_enum: | |
3277 | break; | |
3278 | case lang_fill_statement_enum: | |
3279 | fill = s->fill_statement.fill; | |
3280 | break; | |
3281 | case lang_assignment_statement_enum: | |
3282 | { | |
3283 | exp_fold_tree (s->assignment_statement.exp, | |
3284 | output_section_statement, | |
3285 | lang_final_phase_enum, | |
3286 | dot, | |
3287 | &dot); | |
3288 | } | |
3289 | ||
3290 | break; | |
3291 | case lang_padding_statement_enum: | |
4cbfc3ac | 3292 | dot += s->padding_statement.size / opb; |
252b5132 RH |
3293 | break; |
3294 | ||
3295 | case lang_group_statement_enum: | |
3296 | dot = lang_do_assignments (s->group_statement.children.head, | |
3297 | output_section_statement, | |
3298 | fill, dot); | |
3299 | ||
3300 | break; | |
3301 | ||
3302 | default: | |
3303 | FAIL (); | |
3304 | break; | |
3305 | case lang_address_statement_enum: | |
3306 | break; | |
3307 | } | |
3308 | ||
3309 | } | |
3310 | return dot; | |
3311 | } | |
3312 | ||
3313 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the | |
3314 | operator .startof. (section_name), it produces an undefined symbol | |
3315 | .startof.section_name. Similarly, when it sees | |
3316 | .sizeof. (section_name), it produces an undefined symbol | |
3317 | .sizeof.section_name. For all the output sections, we look for | |
3318 | such symbols, and set them to the correct value. */ | |
3319 | ||
3320 | static void | |
3321 | lang_set_startof () | |
3322 | { | |
3323 | asection *s; | |
3324 | ||
3325 | if (link_info.relocateable) | |
3326 | return; | |
3327 | ||
3328 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3329 | { | |
3330 | const char *secname; | |
3331 | char *buf; | |
3332 | struct bfd_link_hash_entry *h; | |
3333 | ||
3334 | secname = bfd_get_section_name (output_bfd, s); | |
3335 | buf = xmalloc (10 + strlen (secname)); | |
3336 | ||
3337 | sprintf (buf, ".startof.%s", secname); | |
3338 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); | |
3339 | if (h != NULL && h->type == bfd_link_hash_undefined) | |
3340 | { | |
3341 | h->type = bfd_link_hash_defined; | |
3342 | h->u.def.value = bfd_get_section_vma (output_bfd, s); | |
3343 | h->u.def.section = bfd_abs_section_ptr; | |
3344 | } | |
3345 | ||
3346 | sprintf (buf, ".sizeof.%s", secname); | |
3347 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); | |
3348 | if (h != NULL && h->type == bfd_link_hash_undefined) | |
3349 | { | |
5f992e62 | 3350 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
f6af82bd | 3351 | ldfile_output_machine); |
252b5132 RH |
3352 | h->type = bfd_link_hash_defined; |
3353 | if (s->_cooked_size != 0) | |
4cbfc3ac | 3354 | h->u.def.value = s->_cooked_size / opb; |
252b5132 | 3355 | else |
4cbfc3ac | 3356 | h->u.def.value = s->_raw_size / opb; |
252b5132 RH |
3357 | h->u.def.section = bfd_abs_section_ptr; |
3358 | } | |
3359 | ||
3360 | free (buf); | |
3361 | } | |
3362 | } | |
3363 | ||
3364 | static void | |
3365 | lang_finish () | |
3366 | { | |
3367 | struct bfd_link_hash_entry *h; | |
3368 | boolean warn; | |
3369 | ||
3370 | if (link_info.relocateable || link_info.shared) | |
3371 | warn = false; | |
3372 | else | |
3373 | warn = true; | |
3374 | ||
3375 | if (entry_symbol == (char *) NULL) | |
3376 | { | |
3377 | /* No entry has been specified. Look for start, but don't warn | |
3378 | if we don't find it. */ | |
3379 | entry_symbol = "start"; | |
3380 | warn = false; | |
3381 | } | |
3382 | ||
3383 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true); | |
3384 | if (h != (struct bfd_link_hash_entry *) NULL | |
3385 | && (h->type == bfd_link_hash_defined | |
3386 | || h->type == bfd_link_hash_defweak) | |
3387 | && h->u.def.section->output_section != NULL) | |
3388 | { | |
3389 | bfd_vma val; | |
3390 | ||
3391 | val = (h->u.def.value | |
3392 | + bfd_get_section_vma (output_bfd, | |
3393 | h->u.def.section->output_section) | |
3394 | + h->u.def.section->output_offset); | |
3395 | if (! bfd_set_start_address (output_bfd, val)) | |
3396 | einfo (_("%P%F:%s: can't set start address\n"), entry_symbol); | |
3397 | } | |
3398 | else | |
3399 | { | |
3400 | bfd_vma val; | |
5f992e62 | 3401 | const char *send; |
252b5132 RH |
3402 | |
3403 | /* We couldn't find the entry symbol. Try parsing it as a | |
3404 | number. */ | |
3405 | val = bfd_scan_vma (entry_symbol, &send, 0); | |
3406 | if (*send == '\0') | |
3407 | { | |
3408 | if (! bfd_set_start_address (output_bfd, val)) | |
3409 | einfo (_("%P%F: can't set start address\n")); | |
3410 | } | |
3411 | else | |
3412 | { | |
3413 | asection *ts; | |
3414 | ||
3415 | /* Can't find the entry symbol, and it's not a number. Use | |
3416 | the first address in the text section. */ | |
3417 | ts = bfd_get_section_by_name (output_bfd, ".text"); | |
3418 | if (ts != (asection *) NULL) | |
3419 | { | |
3420 | if (warn) | |
3421 | einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"), | |
3422 | entry_symbol, bfd_get_section_vma (output_bfd, ts)); | |
3423 | if (! bfd_set_start_address (output_bfd, | |
3424 | bfd_get_section_vma (output_bfd, | |
3425 | ts))) | |
3426 | einfo (_("%P%F: can't set start address\n")); | |
3427 | } | |
3428 | else | |
3429 | { | |
3430 | if (warn) | |
3431 | einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"), | |
3432 | entry_symbol); | |
3433 | } | |
3434 | } | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* This is a small function used when we want to ignore errors from | |
3439 | BFD. */ | |
3440 | ||
3441 | static void | |
3442 | #ifdef ANSI_PROTOTYPES | |
87f2a346 | 3443 | ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...) |
252b5132 RH |
3444 | #else |
3445 | ignore_bfd_errors (s) | |
87f2a346 | 3446 | const char *s ATTRIBUTE_UNUSED; |
252b5132 RH |
3447 | #endif |
3448 | { | |
3449 | /* Don't do anything. */ | |
3450 | } | |
3451 | ||
3452 | /* Check that the architecture of all the input files is compatible | |
3453 | with the output file. Also call the backend to let it do any | |
3454 | other checking that is needed. */ | |
3455 | ||
3456 | static void | |
3457 | lang_check () | |
3458 | { | |
3459 | lang_statement_union_type *file; | |
3460 | bfd *input_bfd; | |
5f992e62 | 3461 | const bfd_arch_info_type *compatible; |
252b5132 RH |
3462 | |
3463 | for (file = file_chain.head; | |
3464 | file != (lang_statement_union_type *) NULL; | |
3465 | file = file->input_statement.next) | |
3466 | { | |
3467 | input_bfd = file->input_statement.the_bfd; | |
3468 | compatible = bfd_arch_get_compatible (input_bfd, | |
3469 | output_bfd); | |
3470 | if (compatible == NULL) | |
3471 | { | |
3472 | if (command_line.warn_mismatch) | |
3473 | einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"), | |
3474 | bfd_printable_name (input_bfd), input_bfd, | |
3475 | bfd_printable_name (output_bfd)); | |
3476 | } | |
b9247304 | 3477 | else if (bfd_count_sections (input_bfd)) |
252b5132 | 3478 | { |
b9247304 L |
3479 | /* If the input bfd has no contents, it shouldn't set the |
3480 | private data of the output bfd. */ | |
3481 | ||
252b5132 RH |
3482 | bfd_error_handler_type pfn = NULL; |
3483 | ||
3484 | /* If we aren't supposed to warn about mismatched input | |
3485 | files, temporarily set the BFD error handler to a | |
3486 | function which will do nothing. We still want to call | |
3487 | bfd_merge_private_bfd_data, since it may set up | |
3488 | information which is needed in the output file. */ | |
3489 | if (! command_line.warn_mismatch) | |
3490 | pfn = bfd_set_error_handler (ignore_bfd_errors); | |
3491 | if (! bfd_merge_private_bfd_data (input_bfd, output_bfd)) | |
3492 | { | |
3493 | if (command_line.warn_mismatch) | |
3494 | einfo (_("%E%X: failed to merge target specific data of file %B\n"), | |
3495 | input_bfd); | |
3496 | } | |
3497 | if (! command_line.warn_mismatch) | |
3498 | bfd_set_error_handler (pfn); | |
3499 | } | |
3500 | } | |
3501 | } | |
3502 | ||
3503 | /* Look through all the global common symbols and attach them to the | |
3504 | correct section. The -sort-common command line switch may be used | |
3505 | to roughly sort the entries by size. */ | |
3506 | ||
3507 | static void | |
3508 | lang_common () | |
3509 | { | |
3510 | if (link_info.relocateable | |
3511 | && ! command_line.force_common_definition) | |
3512 | return; | |
3513 | ||
3514 | if (! config.sort_common) | |
3515 | bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL); | |
3516 | else | |
3517 | { | |
3518 | int power; | |
3519 | ||
3520 | for (power = 4; power >= 0; power--) | |
3521 | bfd_link_hash_traverse (link_info.hash, lang_one_common, | |
3522 | (PTR) &power); | |
3523 | } | |
3524 | } | |
3525 | ||
3526 | /* Place one common symbol in the correct section. */ | |
3527 | ||
3528 | static boolean | |
3529 | lang_one_common (h, info) | |
3530 | struct bfd_link_hash_entry *h; | |
3531 | PTR info; | |
3532 | { | |
3533 | unsigned int power_of_two; | |
3534 | bfd_vma size; | |
3535 | asection *section; | |
5f992e62 AM |
3536 | unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, |
3537 | ldfile_output_machine); | |
252b5132 RH |
3538 | |
3539 | if (h->type != bfd_link_hash_common) | |
3540 | return true; | |
3541 | ||
3542 | size = h->u.c.size; | |
3543 | power_of_two = h->u.c.p->alignment_power; | |
3544 | ||
3545 | if (config.sort_common | |
3546 | && power_of_two < (unsigned int) *(int *) info) | |
3547 | return true; | |
3548 | ||
3549 | section = h->u.c.p->section; | |
3550 | ||
3551 | /* Increase the size of the section. */ | |
4cbfc3ac TW |
3552 | section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb, |
3553 | (bfd_size_type) (1 << power_of_two)) * opb; | |
252b5132 RH |
3554 | |
3555 | /* Adjust the alignment if necessary. */ | |
3556 | if (power_of_two > section->alignment_power) | |
3557 | section->alignment_power = power_of_two; | |
3558 | ||
3559 | /* Change the symbol from common to defined. */ | |
3560 | h->type = bfd_link_hash_defined; | |
3561 | h->u.def.section = section; | |
3562 | h->u.def.value = section->_cooked_size; | |
3563 | ||
3564 | /* Increase the size of the section. */ | |
3565 | section->_cooked_size += size; | |
3566 | ||
3567 | /* Make sure the section is allocated in memory, and make sure that | |
3568 | it is no longer a common section. */ | |
3569 | section->flags |= SEC_ALLOC; | |
08da4cac | 3570 | section->flags &= ~SEC_IS_COMMON; |
252b5132 RH |
3571 | |
3572 | if (config.map_file != NULL) | |
3573 | { | |
3574 | static boolean header_printed; | |
3575 | int len; | |
3576 | char *name; | |
3577 | char buf[50]; | |
3578 | ||
3579 | if (! header_printed) | |
3580 | { | |
3581 | minfo (_("\nAllocating common symbols\n")); | |
3582 | minfo (_("Common symbol size file\n\n")); | |
3583 | header_printed = true; | |
3584 | } | |
3585 | ||
3586 | name = demangle (h->root.string); | |
3587 | minfo ("%s", name); | |
3588 | len = strlen (name); | |
3589 | free (name); | |
3590 | ||
3591 | if (len >= 19) | |
3592 | { | |
3593 | print_nl (); | |
3594 | len = 0; | |
3595 | } | |
3596 | while (len < 20) | |
3597 | { | |
3598 | print_space (); | |
3599 | ++len; | |
3600 | } | |
3601 | ||
3602 | minfo ("0x"); | |
3603 | if (size <= 0xffffffff) | |
3604 | sprintf (buf, "%lx", (unsigned long) size); | |
3605 | else | |
3606 | sprintf_vma (buf, size); | |
3607 | minfo ("%s", buf); | |
3608 | len = strlen (buf); | |
3609 | ||
3610 | while (len < 16) | |
3611 | { | |
3612 | print_space (); | |
3613 | ++len; | |
3614 | } | |
3615 | ||
3616 | minfo ("%B\n", section->owner); | |
3617 | } | |
3618 | ||
3619 | return true; | |
3620 | } | |
3621 | ||
08da4cac KH |
3622 | /* Run through the input files and ensure that every input section has |
3623 | somewhere to go. If one is found without a destination then create | |
3624 | an input request and place it into the statement tree. */ | |
252b5132 RH |
3625 | |
3626 | static void | |
3627 | lang_place_orphans () | |
3628 | { | |
e50d8076 | 3629 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
3630 | { |
3631 | asection *s; | |
3632 | ||
3633 | for (s = file->the_bfd->sections; | |
3634 | s != (asection *) NULL; | |
3635 | s = s->next) | |
3636 | { | |
3637 | if (s->output_section == (asection *) NULL) | |
3638 | { | |
3639 | /* This section of the file is not attatched, root | |
08da4cac | 3640 | around for a sensible place for it to go. */ |
252b5132 RH |
3641 | |
3642 | if (file->just_syms_flag) | |
3643 | { | |
3644 | /* We are only retrieving symbol values from this | |
3645 | file. We want the symbols to act as though the | |
3646 | values in the file are absolute. */ | |
3647 | s->output_section = bfd_abs_section_ptr; | |
3648 | s->output_offset = s->vma; | |
3649 | } | |
3650 | else if (strcmp (s->name, "COMMON") == 0) | |
3651 | { | |
3652 | /* This is a lonely common section which must have | |
3653 | come from an archive. We attach to the section | |
3654 | with the wildcard. */ | |
3655 | if (! link_info.relocateable | |
3656 | || command_line.force_common_definition) | |
3657 | { | |
3658 | if (default_common_section == NULL) | |
3659 | { | |
3660 | #if 0 | |
3661 | /* This message happens when using the | |
3662 | svr3.ifile linker script, so I have | |
3663 | disabled it. */ | |
3664 | info_msg (_("%P: no [COMMON] command, defaulting to .bss\n")); | |
3665 | #endif | |
3666 | default_common_section = | |
3667 | lang_output_section_statement_lookup (".bss"); | |
3668 | ||
3669 | } | |
3670 | wild_doit (&default_common_section->children, s, | |
3671 | default_common_section, file); | |
3672 | } | |
3673 | } | |
3674 | else if (ldemul_place_orphan (file, s)) | |
3675 | ; | |
3676 | else | |
3677 | { | |
3678 | lang_output_section_statement_type *os = | |
3679 | lang_output_section_statement_lookup (s->name); | |
3680 | ||
3681 | wild_doit (&os->children, s, os, file); | |
3682 | } | |
3683 | } | |
3684 | } | |
3685 | } | |
3686 | } | |
3687 | ||
252b5132 | 3688 | void |
aa8804e4 | 3689 | lang_set_flags (ptr, flags, invert) |
252b5132 | 3690 | lang_memory_region_type *ptr; |
5f992e62 | 3691 | const char *flags; |
aa8804e4 | 3692 | int invert; |
252b5132 | 3693 | { |
aa8804e4 | 3694 | flagword *ptr_flags; |
252b5132 | 3695 | |
aa8804e4 | 3696 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
252b5132 RH |
3697 | while (*flags) |
3698 | { | |
3699 | switch (*flags) | |
3700 | { | |
252b5132 RH |
3701 | case 'A': case 'a': |
3702 | *ptr_flags |= SEC_ALLOC; | |
3703 | break; | |
3704 | ||
3705 | case 'R': case 'r': | |
3706 | *ptr_flags |= SEC_READONLY; | |
3707 | break; | |
3708 | ||
3709 | case 'W': case 'w': | |
3710 | *ptr_flags |= SEC_DATA; | |
3711 | break; | |
3712 | ||
3713 | case 'X': case 'x': | |
3714 | *ptr_flags |= SEC_CODE; | |
3715 | break; | |
3716 | ||
3717 | case 'L': case 'l': | |
3718 | case 'I': case 'i': | |
3719 | *ptr_flags |= SEC_LOAD; | |
3720 | break; | |
3721 | ||
3722 | default: | |
3723 | einfo (_("%P%F: invalid syntax in flags\n")); | |
3724 | break; | |
3725 | } | |
3726 | flags++; | |
3727 | } | |
3728 | } | |
3729 | ||
3730 | /* Call a function on each input file. This function will be called | |
3731 | on an archive, but not on the elements. */ | |
3732 | ||
3733 | void | |
3734 | lang_for_each_input_file (func) | |
3735 | void (*func) PARAMS ((lang_input_statement_type *)); | |
3736 | { | |
3737 | lang_input_statement_type *f; | |
3738 | ||
3739 | for (f = (lang_input_statement_type *) input_file_chain.head; | |
3740 | f != NULL; | |
3741 | f = (lang_input_statement_type *) f->next_real_file) | |
3742 | func (f); | |
3743 | } | |
3744 | ||
3745 | /* Call a function on each file. The function will be called on all | |
3746 | the elements of an archive which are included in the link, but will | |
3747 | not be called on the archive file itself. */ | |
3748 | ||
3749 | void | |
3750 | lang_for_each_file (func) | |
3751 | void (*func) PARAMS ((lang_input_statement_type *)); | |
3752 | { | |
e50d8076 | 3753 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 RH |
3754 | { |
3755 | func (f); | |
3756 | } | |
3757 | } | |
3758 | ||
3759 | #if 0 | |
3760 | ||
3761 | /* Not used. */ | |
3762 | ||
3763 | void | |
3764 | lang_for_each_input_section (func) | |
08da4cac | 3765 | void (*func) PARAMS ((bfd *ab, asection *as)); |
252b5132 | 3766 | { |
e50d8076 | 3767 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 | 3768 | { |
08da4cac | 3769 | asection *s; |
252b5132 RH |
3770 | |
3771 | for (s = f->the_bfd->sections; | |
3772 | s != (asection *) NULL; | |
3773 | s = s->next) | |
3774 | { | |
3775 | func (f->the_bfd, s); | |
3776 | } | |
3777 | } | |
3778 | } | |
3779 | ||
3780 | #endif | |
3781 | ||
3782 | void | |
3783 | ldlang_add_file (entry) | |
08da4cac | 3784 | lang_input_statement_type *entry; |
252b5132 RH |
3785 | { |
3786 | bfd **pp; | |
3787 | ||
3788 | lang_statement_append (&file_chain, | |
3789 | (lang_statement_union_type *) entry, | |
3790 | &entry->next); | |
3791 | ||
3792 | /* The BFD linker needs to have a list of all input BFDs involved in | |
3793 | a link. */ | |
3794 | ASSERT (entry->the_bfd->link_next == (bfd *) NULL); | |
3795 | ASSERT (entry->the_bfd != output_bfd); | |
3796 | for (pp = &link_info.input_bfds; | |
3797 | *pp != (bfd *) NULL; | |
3798 | pp = &(*pp)->link_next) | |
3799 | ; | |
3800 | *pp = entry->the_bfd; | |
3801 | entry->the_bfd->usrdata = (PTR) entry; | |
3802 | bfd_set_gp_size (entry->the_bfd, g_switch_value); | |
3803 | ||
3804 | /* Look through the sections and check for any which should not be | |
3805 | included in the link. We need to do this now, so that we can | |
3806 | notice when the backend linker tries to report multiple | |
3807 | definition errors for symbols which are in sections we aren't | |
3808 | going to link. FIXME: It might be better to entirely ignore | |
3809 | symbols which are defined in sections which are going to be | |
3810 | discarded. This would require modifying the backend linker for | |
3811 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
3812 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
3813 | ||
3814 | bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry); | |
3815 | } | |
3816 | ||
3817 | void | |
3818 | lang_add_output (name, from_script) | |
5f992e62 | 3819 | const char *name; |
252b5132 RH |
3820 | int from_script; |
3821 | { | |
3822 | /* Make -o on command line override OUTPUT in script. */ | |
3823 | if (had_output_filename == false || !from_script) | |
3824 | { | |
3825 | output_filename = name; | |
3826 | had_output_filename = true; | |
3827 | } | |
3828 | } | |
3829 | ||
252b5132 RH |
3830 | static lang_output_section_statement_type *current_section; |
3831 | ||
3832 | static int | |
3833 | topower (x) | |
3834 | int x; | |
3835 | { | |
3836 | unsigned int i = 1; | |
3837 | int l; | |
3838 | ||
3839 | if (x < 0) | |
3840 | return -1; | |
3841 | ||
5f992e62 | 3842 | for (l = 0; l < 32; l++) |
252b5132 RH |
3843 | { |
3844 | if (i >= (unsigned int) x) | |
3845 | return l; | |
3846 | i <<= 1; | |
3847 | } | |
3848 | ||
3849 | return 0; | |
3850 | } | |
3851 | ||
aea4bd9d | 3852 | lang_output_section_statement_type * |
252b5132 RH |
3853 | lang_enter_output_section_statement (output_section_statement_name, |
3854 | address_exp, sectype, block_value, | |
3855 | align, subalign, ebase) | |
3856 | const char *output_section_statement_name; | |
08da4cac | 3857 | etree_type *address_exp; |
252b5132 RH |
3858 | enum section_type sectype; |
3859 | bfd_vma block_value; | |
3860 | etree_type *align; | |
3861 | etree_type *subalign; | |
3862 | etree_type *ebase; | |
3863 | { | |
3864 | lang_output_section_statement_type *os; | |
3865 | ||
3866 | current_section = | |
3867 | os = | |
3868 | lang_output_section_statement_lookup (output_section_statement_name); | |
3869 | ||
08da4cac KH |
3870 | /* Add this statement to tree. */ |
3871 | #if 0 | |
3872 | add_statement (lang_output_section_statement_enum, | |
3873 | output_section_statement); | |
3874 | #endif | |
3875 | /* Make next things chain into subchain of this. */ | |
252b5132 | 3876 | |
08da4cac KH |
3877 | if (os->addr_tree == (etree_type *) NULL) |
3878 | { | |
3879 | os->addr_tree = address_exp; | |
3880 | } | |
252b5132 RH |
3881 | os->sectype = sectype; |
3882 | if (sectype != noload_section) | |
3883 | os->flags = SEC_NO_FLAGS; | |
3884 | else | |
3885 | os->flags = SEC_NEVER_LOAD; | |
3886 | os->block_value = block_value ? block_value : 1; | |
3887 | stat_ptr = &os->children; | |
3888 | ||
08da4cac KH |
3889 | os->subsection_alignment = |
3890 | topower (exp_get_value_int (subalign, -1, "subsection alignment", 0)); | |
3891 | os->section_alignment = | |
3892 | topower (exp_get_value_int (align, -1, "section alignment", 0)); | |
252b5132 RH |
3893 | |
3894 | os->load_base = ebase; | |
aea4bd9d | 3895 | return os; |
252b5132 RH |
3896 | } |
3897 | ||
252b5132 RH |
3898 | void |
3899 | lang_final () | |
3900 | { | |
3901 | lang_output_statement_type *new = | |
3902 | new_stat (lang_output_statement, stat_ptr); | |
3903 | ||
3904 | new->name = output_filename; | |
3905 | } | |
3906 | ||
08da4cac KH |
3907 | /* Reset the current counters in the regions. */ |
3908 | ||
252b5132 RH |
3909 | static void |
3910 | reset_memory_regions () | |
3911 | { | |
3912 | lang_memory_region_type *p = lang_memory_region_list; | |
3913 | ||
3914 | for (p = lang_memory_region_list; | |
3915 | p != (lang_memory_region_type *) NULL; | |
3916 | p = p->next) | |
3917 | { | |
3918 | p->old_length = (bfd_size_type) (p->current - p->origin); | |
3919 | p->current = p->origin; | |
3920 | } | |
3921 | } | |
3922 | ||
252b5132 RH |
3923 | /* Expand a wild statement for a particular FILE, marking its sections KEEP |
3924 | as needed. SECTION may be NULL, in which case it is a wild card. */ | |
3925 | ||
3926 | static void | |
4dec4d4e | 3927 | gc_section_callback (ptr, section, file, data) |
252b5132 | 3928 | lang_wild_statement_type *ptr; |
4dec4d4e | 3929 | asection *section; |
87f2a346 | 3930 | lang_input_statement_type *file ATTRIBUTE_UNUSED; |
5f992e62 | 3931 | PTR data ATTRIBUTE_UNUSED; |
252b5132 | 3932 | { |
4dec4d4e RH |
3933 | /* If the wild pattern was marked KEEP, the member sections |
3934 | should be as well. */ | |
3935 | if (ptr->keep_sections) | |
3936 | section->flags |= SEC_KEEP; | |
252b5132 RH |
3937 | } |
3938 | ||
3939 | /* Handle a wild statement, marking it against GC. SECTION or FILE or both | |
3940 | may be NULL, indicating that it is a wildcard. */ | |
3941 | ||
3942 | static void | |
3943 | lang_gc_wild (s, section, file) | |
3944 | lang_wild_statement_type *s; | |
3945 | const char *section; | |
3946 | const char *file; | |
3947 | { | |
4dec4d4e | 3948 | walk_wild (s, section, file, gc_section_callback, NULL); |
252b5132 RH |
3949 | } |
3950 | ||
3951 | /* Iterate over sections marking them against GC. */ | |
3952 | ||
3953 | static void | |
3954 | lang_gc_sections_1 (s) | |
08da4cac | 3955 | lang_statement_union_type *s; |
252b5132 RH |
3956 | { |
3957 | for (; s != (lang_statement_union_type *) NULL; s = s->next) | |
3958 | { | |
3959 | switch (s->header.type) | |
3960 | { | |
3961 | case lang_wild_statement_enum: | |
3962 | lang_gc_wild (&s->wild_statement, | |
3963 | s->wild_statement.section_name, | |
3964 | s->wild_statement.filename); | |
3965 | break; | |
3966 | case lang_constructors_statement_enum: | |
3967 | lang_gc_sections_1 (constructor_list.head); | |
3968 | break; | |
3969 | case lang_output_section_statement_enum: | |
3970 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
3971 | break; | |
3972 | case lang_group_statement_enum: | |
3973 | lang_gc_sections_1 (s->group_statement.children.head); | |
3974 | break; | |
3975 | default: | |
3976 | break; | |
3977 | } | |
3978 | } | |
3979 | } | |
3980 | ||
3981 | static void | |
3982 | lang_gc_sections () | |
3983 | { | |
3984 | struct bfd_link_hash_entry *h; | |
3985 | ldlang_undef_chain_list_type *ulist, fake_list_start; | |
3986 | ||
3987 | /* Keep all sections so marked in the link script. */ | |
3988 | ||
3989 | lang_gc_sections_1 (statement_list.head); | |
3990 | ||
3991 | /* Keep all sections containing symbols undefined on the command-line. | |
3992 | Handle the entry symbol at the same time. */ | |
5f992e62 | 3993 | |
7c83b342 DE |
3994 | if (entry_symbol != NULL) |
3995 | { | |
3996 | fake_list_start.next = ldlang_undef_chain_list_head; | |
3997 | fake_list_start.name = (char *) entry_symbol; | |
3998 | ulist = &fake_list_start; | |
3999 | } | |
252b5132 | 4000 | else |
7c83b342 | 4001 | ulist = ldlang_undef_chain_list_head; |
252b5132 | 4002 | |
7c83b342 | 4003 | for (; ulist; ulist = ulist->next) |
252b5132 | 4004 | { |
5f992e62 | 4005 | h = bfd_link_hash_lookup (link_info.hash, ulist->name, |
252b5132 RH |
4006 | false, false, false); |
4007 | ||
4008 | if (h != (struct bfd_link_hash_entry *) NULL | |
08da4cac KH |
4009 | && (h->type == bfd_link_hash_defined |
4010 | || h->type == bfd_link_hash_defweak) | |
252b5132 RH |
4011 | && ! bfd_is_abs_section (h->u.def.section)) |
4012 | { | |
4013 | h->u.def.section->flags |= SEC_KEEP; | |
4014 | } | |
4015 | } | |
4016 | ||
4017 | bfd_gc_sections (output_bfd, &link_info); | |
4018 | } | |
4019 | ||
4020 | void | |
4021 | lang_process () | |
4022 | { | |
4023 | lang_reasonable_defaults (); | |
4024 | current_target = default_target; | |
4025 | ||
08da4cac KH |
4026 | /* Open the output file. */ |
4027 | lang_for_each_statement (ldlang_open_output); | |
252b5132 RH |
4028 | |
4029 | ldemul_create_output_section_statements (); | |
4030 | ||
08da4cac | 4031 | /* Add to the hash table all undefineds on the command line. */ |
252b5132 RH |
4032 | lang_place_undefineds (); |
4033 | ||
9503fd87 ILT |
4034 | already_linked_table_init (); |
4035 | ||
08da4cac | 4036 | /* Create a bfd for each input file. */ |
252b5132 RH |
4037 | current_target = default_target; |
4038 | open_input_bfds (statement_list.head, false); | |
4039 | ||
4040 | ldemul_after_open (); | |
4041 | ||
9503fd87 ILT |
4042 | already_linked_table_free (); |
4043 | ||
252b5132 RH |
4044 | /* Make sure that we're not mixing architectures. We call this |
4045 | after all the input files have been opened, but before we do any | |
4046 | other processing, so that any operations merge_private_bfd_data | |
4047 | does on the output file will be known during the rest of the | |
4048 | link. */ | |
4049 | lang_check (); | |
4050 | ||
4051 | /* Handle .exports instead of a version script if we're told to do so. */ | |
4052 | if (command_line.version_exports_section) | |
4053 | lang_do_version_exports_section (); | |
4054 | ||
4055 | /* Build all sets based on the information gathered from the input | |
4056 | files. */ | |
4057 | ldctor_build_sets (); | |
4058 | ||
4059 | /* Remove unreferenced sections if asked to. */ | |
4060 | if (command_line.gc_sections) | |
4061 | lang_gc_sections (); | |
4062 | ||
08da4cac | 4063 | /* Size up the common data. */ |
252b5132 RH |
4064 | lang_common (); |
4065 | ||
4066 | /* Run through the contours of the script and attach input sections | |
08da4cac | 4067 | to the correct output sections. */ |
252b5132 RH |
4068 | map_input_to_output_sections (statement_list.head, (char *) NULL, |
4069 | (lang_output_section_statement_type *) NULL); | |
4070 | ||
08da4cac | 4071 | /* Find any sections not attached explicitly and handle them. */ |
252b5132 RH |
4072 | lang_place_orphans (); |
4073 | ||
4074 | ldemul_before_allocation (); | |
4075 | ||
4076 | /* We must record the program headers before we try to fix the | |
4077 | section positions, since they will affect SIZEOF_HEADERS. */ | |
4078 | lang_record_phdrs (); | |
4079 | ||
08da4cac | 4080 | /* Now run around and relax if we can. */ |
252b5132 RH |
4081 | if (command_line.relax) |
4082 | { | |
4083 | /* First time round is a trial run to get the 'worst case' | |
4084 | addresses of the objects if there was no relaxing. */ | |
4085 | lang_size_sections (statement_list.head, | |
4086 | abs_output_section, | |
4087 | &(statement_list.head), 0, (bfd_vma) 0, false); | |
4088 | ||
4089 | /* Keep relaxing until bfd_relax_section gives up. */ | |
4090 | do | |
4091 | { | |
4092 | reset_memory_regions (); | |
4093 | ||
4094 | relax_again = false; | |
4095 | ||
4096 | /* Note: pe-dll.c does something like this also. If you find | |
4097 | you need to change this code, you probably need to change | |
08da4cac | 4098 | pe-dll.c also. DJ */ |
252b5132 RH |
4099 | |
4100 | /* Do all the assignments with our current guesses as to | |
4101 | section sizes. */ | |
4102 | lang_do_assignments (statement_list.head, | |
4103 | abs_output_section, | |
4104 | (fill_type) 0, (bfd_vma) 0); | |
4105 | ||
4106 | /* Perform another relax pass - this time we know where the | |
4107 | globals are, so can make better guess. */ | |
4108 | lang_size_sections (statement_list.head, | |
4109 | abs_output_section, | |
4110 | &(statement_list.head), 0, (bfd_vma) 0, true); | |
4111 | } | |
4112 | while (relax_again); | |
4113 | } | |
4114 | else | |
4115 | { | |
4116 | /* Size up the sections. */ | |
4117 | lang_size_sections (statement_list.head, | |
4118 | abs_output_section, | |
4119 | &(statement_list.head), 0, (bfd_vma) 0, false); | |
4120 | } | |
4121 | ||
4122 | /* See if anything special should be done now we know how big | |
4123 | everything is. */ | |
4124 | ldemul_after_allocation (); | |
4125 | ||
4126 | /* Fix any .startof. or .sizeof. symbols. */ | |
4127 | lang_set_startof (); | |
4128 | ||
08da4cac KH |
4129 | /* Do all the assignments, now that we know the final resting places |
4130 | of all the symbols. */ | |
252b5132 RH |
4131 | |
4132 | lang_do_assignments (statement_list.head, | |
4133 | abs_output_section, | |
4134 | (fill_type) 0, (bfd_vma) 0); | |
4135 | ||
4136 | /* Make sure that the section addresses make sense. */ | |
4137 | if (! link_info.relocateable | |
4138 | && command_line.check_section_addresses) | |
4139 | lang_check_section_addresses (); | |
5f992e62 | 4140 | |
08da4cac | 4141 | /* Final stuffs. */ |
252b5132 RH |
4142 | |
4143 | ldemul_finish (); | |
4144 | lang_finish (); | |
4145 | } | |
4146 | ||
4147 | /* EXPORTED TO YACC */ | |
4148 | ||
4149 | void | |
4150 | lang_add_wild (section_name, sections_sorted, filename, filenames_sorted, | |
18625d54 | 4151 | keep_sections, exclude_filename_list) |
252b5132 RH |
4152 | const char *const section_name; |
4153 | boolean sections_sorted; | |
4154 | const char *const filename; | |
4155 | boolean filenames_sorted; | |
4156 | boolean keep_sections; | |
18625d54 | 4157 | struct name_list *exclude_filename_list; |
252b5132 RH |
4158 | { |
4159 | lang_wild_statement_type *new = new_stat (lang_wild_statement, | |
4160 | stat_ptr); | |
4161 | ||
4162 | if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0) | |
4163 | { | |
4164 | placed_commons = true; | |
4165 | } | |
4166 | if (filename != NULL && ! wildcardp (filename)) | |
4167 | { | |
4168 | lang_has_input_file = true; | |
4169 | } | |
4170 | new->section_name = section_name; | |
4171 | new->sections_sorted = sections_sorted; | |
4172 | new->filename = filename; | |
4173 | new->filenames_sorted = filenames_sorted; | |
4174 | new->keep_sections = keep_sections; | |
18625d54 | 4175 | new->exclude_filename_list = exclude_filename_list; |
252b5132 RH |
4176 | lang_list_init (&new->children); |
4177 | } | |
4178 | ||
4179 | void | |
4180 | lang_section_start (name, address) | |
5f992e62 | 4181 | const char *name; |
08da4cac | 4182 | etree_type *address; |
252b5132 RH |
4183 | { |
4184 | lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr); | |
4185 | ||
4186 | ad->section_name = name; | |
4187 | ad->address = address; | |
4188 | } | |
4189 | ||
4190 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
4191 | because of a -e argument on the command line, or zero if this is | |
4192 | called by ENTRY in a linker script. Command line arguments take | |
4193 | precedence. */ | |
4194 | ||
4195 | void | |
4196 | lang_add_entry (name, cmdline) | |
5f992e62 | 4197 | const char *name; |
252b5132 RH |
4198 | boolean cmdline; |
4199 | { | |
4200 | if (entry_symbol == NULL | |
4201 | || cmdline | |
4202 | || ! entry_from_cmdline) | |
4203 | { | |
4204 | entry_symbol = name; | |
4205 | entry_from_cmdline = cmdline; | |
4206 | } | |
4207 | } | |
4208 | ||
4209 | void | |
4210 | lang_add_target (name) | |
5f992e62 | 4211 | const char *name; |
252b5132 RH |
4212 | { |
4213 | lang_target_statement_type *new = new_stat (lang_target_statement, | |
4214 | stat_ptr); | |
4215 | ||
4216 | new->target = name; | |
4217 | ||
4218 | } | |
4219 | ||
4220 | void | |
4221 | lang_add_map (name) | |
5f992e62 | 4222 | const char *name; |
252b5132 RH |
4223 | { |
4224 | while (*name) | |
4225 | { | |
4226 | switch (*name) | |
4227 | { | |
08da4cac | 4228 | case 'F': |
252b5132 RH |
4229 | map_option_f = true; |
4230 | break; | |
4231 | } | |
4232 | name++; | |
4233 | } | |
4234 | } | |
4235 | ||
4236 | void | |
4237 | lang_add_fill (exp) | |
4238 | int exp; | |
4239 | { | |
4240 | lang_fill_statement_type *new = new_stat (lang_fill_statement, | |
4241 | stat_ptr); | |
4242 | ||
4243 | new->fill = exp; | |
4244 | } | |
4245 | ||
4246 | void | |
4247 | lang_add_data (type, exp) | |
4248 | int type; | |
4249 | union etree_union *exp; | |
4250 | { | |
4251 | ||
4252 | lang_data_statement_type *new = new_stat (lang_data_statement, | |
4253 | stat_ptr); | |
4254 | ||
4255 | new->exp = exp; | |
4256 | new->type = type; | |
4257 | ||
4258 | } | |
4259 | ||
4260 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
4261 | generate. HOWTO is the corresponding howto structure (we could | |
4262 | look this up, but the caller has already done so). SECTION is the | |
4263 | section to generate a reloc against, or NAME is the name of the | |
4264 | symbol to generate a reloc against. Exactly one of SECTION and | |
4265 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
4266 | ||
4267 | void | |
4268 | lang_add_reloc (reloc, howto, section, name, addend) | |
4269 | bfd_reloc_code_real_type reloc; | |
4270 | reloc_howto_type *howto; | |
4271 | asection *section; | |
4272 | const char *name; | |
4273 | union etree_union *addend; | |
4274 | { | |
4275 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
5f992e62 | 4276 | |
252b5132 RH |
4277 | p->reloc = reloc; |
4278 | p->howto = howto; | |
4279 | p->section = section; | |
4280 | p->name = name; | |
4281 | p->addend_exp = addend; | |
4282 | ||
4283 | p->addend_value = 0; | |
4284 | p->output_section = NULL; | |
4285 | p->output_vma = 0; | |
4286 | } | |
4287 | ||
4288 | lang_assignment_statement_type * | |
4289 | lang_add_assignment (exp) | |
08da4cac | 4290 | etree_type *exp; |
252b5132 RH |
4291 | { |
4292 | lang_assignment_statement_type *new = new_stat (lang_assignment_statement, | |
4293 | stat_ptr); | |
4294 | ||
4295 | new->exp = exp; | |
4296 | return new; | |
4297 | } | |
4298 | ||
4299 | void | |
4300 | lang_add_attribute (attribute) | |
4301 | enum statement_enum attribute; | |
4302 | { | |
4303 | new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); | |
4304 | } | |
4305 | ||
4306 | void | |
4307 | lang_startup (name) | |
5f992e62 | 4308 | const char *name; |
252b5132 RH |
4309 | { |
4310 | if (startup_file != (char *) NULL) | |
4311 | { | |
4312 | einfo (_("%P%Fmultiple STARTUP files\n")); | |
4313 | } | |
4314 | first_file->filename = name; | |
4315 | first_file->local_sym_name = name; | |
4316 | first_file->real = true; | |
4317 | ||
4318 | startup_file = name; | |
4319 | } | |
4320 | ||
4321 | void | |
4322 | lang_float (maybe) | |
4323 | boolean maybe; | |
4324 | { | |
4325 | lang_float_flag = maybe; | |
4326 | } | |
4327 | ||
4328 | void | |
562d3460 | 4329 | lang_leave_output_section_statement (fill, memspec, phdrs, lma_memspec) |
252b5132 RH |
4330 | bfd_vma fill; |
4331 | const char *memspec; | |
4332 | struct lang_output_section_phdr_list *phdrs; | |
562d3460 | 4333 | const char *lma_memspec; |
252b5132 RH |
4334 | { |
4335 | current_section->fill = fill; | |
4336 | current_section->region = lang_memory_region_lookup (memspec); | |
562d3460 TW |
4337 | if (strcmp (lma_memspec, "*default*") != 0) |
4338 | { | |
4339 | current_section->lma_region = lang_memory_region_lookup (lma_memspec); | |
08da4cac KH |
4340 | /* If no runtime region has been given, but the load region has |
4341 | been, use the load region. */ | |
562d3460 TW |
4342 | if (strcmp (memspec, "*default*") == 0) |
4343 | current_section->region = lang_memory_region_lookup (lma_memspec); | |
4344 | } | |
252b5132 RH |
4345 | current_section->phdrs = phdrs; |
4346 | stat_ptr = &statement_list; | |
4347 | } | |
4348 | ||
08da4cac KH |
4349 | /* Create an absolute symbol with the given name with the value of the |
4350 | address of first byte of the section named. | |
4351 | ||
4352 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4353 | |
252b5132 RH |
4354 | void |
4355 | lang_abs_symbol_at_beginning_of (secname, name) | |
4356 | const char *secname; | |
4357 | const char *name; | |
4358 | { | |
4359 | struct bfd_link_hash_entry *h; | |
4360 | ||
4361 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); | |
4362 | if (h == (struct bfd_link_hash_entry *) NULL) | |
4363 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
4364 | ||
4365 | if (h->type == bfd_link_hash_new | |
4366 | || h->type == bfd_link_hash_undefined) | |
4367 | { | |
4368 | asection *sec; | |
4369 | ||
4370 | h->type = bfd_link_hash_defined; | |
4371 | ||
4372 | sec = bfd_get_section_by_name (output_bfd, secname); | |
4373 | if (sec == (asection *) NULL) | |
4374 | h->u.def.value = 0; | |
4375 | else | |
4376 | h->u.def.value = bfd_get_section_vma (output_bfd, sec); | |
4377 | ||
4378 | h->u.def.section = bfd_abs_section_ptr; | |
4379 | } | |
4380 | } | |
4381 | ||
08da4cac KH |
4382 | /* Create an absolute symbol with the given name with the value of the |
4383 | address of the first byte after the end of the section named. | |
4384 | ||
4385 | If the symbol already exists, then do nothing. */ | |
252b5132 | 4386 | |
252b5132 RH |
4387 | void |
4388 | lang_abs_symbol_at_end_of (secname, name) | |
4389 | const char *secname; | |
4390 | const char *name; | |
4391 | { | |
4392 | struct bfd_link_hash_entry *h; | |
4393 | ||
4394 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); | |
4395 | if (h == (struct bfd_link_hash_entry *) NULL) | |
4396 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
4397 | ||
4398 | if (h->type == bfd_link_hash_new | |
4399 | || h->type == bfd_link_hash_undefined) | |
4400 | { | |
4401 | asection *sec; | |
4402 | ||
4403 | h->type = bfd_link_hash_defined; | |
4404 | ||
4405 | sec = bfd_get_section_by_name (output_bfd, secname); | |
4406 | if (sec == (asection *) NULL) | |
4407 | h->u.def.value = 0; | |
4408 | else | |
4409 | h->u.def.value = (bfd_get_section_vma (output_bfd, sec) | |
4cbfc3ac TW |
4410 | + bfd_section_size (output_bfd, sec) / |
4411 | bfd_octets_per_byte (output_bfd)); | |
252b5132 RH |
4412 | |
4413 | h->u.def.section = bfd_abs_section_ptr; | |
4414 | } | |
4415 | } | |
4416 | ||
4417 | void | |
4418 | lang_statement_append (list, element, field) | |
08da4cac KH |
4419 | lang_statement_list_type *list; |
4420 | lang_statement_union_type *element; | |
4421 | lang_statement_union_type **field; | |
252b5132 RH |
4422 | { |
4423 | *(list->tail) = element; | |
4424 | list->tail = field; | |
4425 | } | |
4426 | ||
4427 | /* Set the output format type. -oformat overrides scripts. */ | |
4428 | ||
4429 | void | |
4430 | lang_add_output_format (format, big, little, from_script) | |
4431 | const char *format; | |
4432 | const char *big; | |
4433 | const char *little; | |
4434 | int from_script; | |
4435 | { | |
4436 | if (output_target == NULL || !from_script) | |
4437 | { | |
4438 | if (command_line.endian == ENDIAN_BIG | |
4439 | && big != NULL) | |
4440 | format = big; | |
4441 | else if (command_line.endian == ENDIAN_LITTLE | |
4442 | && little != NULL) | |
4443 | format = little; | |
4444 | ||
4445 | output_target = format; | |
4446 | } | |
4447 | } | |
4448 | ||
4449 | /* Enter a group. This creates a new lang_group_statement, and sets | |
4450 | stat_ptr to build new statements within the group. */ | |
4451 | ||
4452 | void | |
4453 | lang_enter_group () | |
4454 | { | |
4455 | lang_group_statement_type *g; | |
4456 | ||
4457 | g = new_stat (lang_group_statement, stat_ptr); | |
4458 | lang_list_init (&g->children); | |
4459 | stat_ptr = &g->children; | |
4460 | } | |
4461 | ||
4462 | /* Leave a group. This just resets stat_ptr to start writing to the | |
4463 | regular list of statements again. Note that this will not work if | |
4464 | groups can occur inside anything else which can adjust stat_ptr, | |
4465 | but currently they can't. */ | |
4466 | ||
4467 | void | |
4468 | lang_leave_group () | |
4469 | { | |
4470 | stat_ptr = &statement_list; | |
4471 | } | |
4472 | ||
4473 | /* Add a new program header. This is called for each entry in a PHDRS | |
4474 | command in a linker script. */ | |
4475 | ||
4476 | void | |
4477 | lang_new_phdr (name, type, filehdr, phdrs, at, flags) | |
4478 | const char *name; | |
4479 | etree_type *type; | |
4480 | boolean filehdr; | |
4481 | boolean phdrs; | |
4482 | etree_type *at; | |
4483 | etree_type *flags; | |
4484 | { | |
4485 | struct lang_phdr *n, **pp; | |
4486 | ||
4487 | n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr)); | |
4488 | n->next = NULL; | |
4489 | n->name = name; | |
4490 | n->type = exp_get_value_int (type, 0, "program header type", | |
4491 | lang_final_phase_enum); | |
4492 | n->filehdr = filehdr; | |
4493 | n->phdrs = phdrs; | |
4494 | n->at = at; | |
4495 | n->flags = flags; | |
4496 | ||
4497 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4498 | ; | |
4499 | *pp = n; | |
4500 | } | |
4501 | ||
4502 | /* Record the program header information in the output BFD. FIXME: We | |
4503 | should not be calling an ELF specific function here. */ | |
4504 | ||
4505 | static void | |
4506 | lang_record_phdrs () | |
4507 | { | |
4508 | unsigned int alc; | |
4509 | asection **secs; | |
4510 | struct lang_output_section_phdr_list *last; | |
4511 | struct lang_phdr *l; | |
4512 | lang_statement_union_type *u; | |
4513 | ||
4514 | alc = 10; | |
4515 | secs = (asection **) xmalloc (alc * sizeof (asection *)); | |
4516 | last = NULL; | |
4517 | for (l = lang_phdr_list; l != NULL; l = l->next) | |
4518 | { | |
4519 | unsigned int c; | |
4520 | flagword flags; | |
4521 | bfd_vma at; | |
4522 | ||
4523 | c = 0; | |
4524 | for (u = lang_output_section_statement.head; | |
4525 | u != NULL; | |
4526 | u = u->output_section_statement.next) | |
4527 | { | |
4528 | lang_output_section_statement_type *os; | |
4529 | struct lang_output_section_phdr_list *pl; | |
4530 | ||
4531 | os = &u->output_section_statement; | |
4532 | ||
4533 | pl = os->phdrs; | |
4534 | if (pl != NULL) | |
4535 | last = pl; | |
4536 | else | |
4537 | { | |
4538 | if (os->sectype == noload_section | |
4539 | || os->bfd_section == NULL | |
4540 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
4541 | continue; | |
4542 | pl = last; | |
4543 | } | |
4544 | ||
4545 | if (os->bfd_section == NULL) | |
4546 | continue; | |
4547 | ||
4548 | for (; pl != NULL; pl = pl->next) | |
4549 | { | |
4550 | if (strcmp (pl->name, l->name) == 0) | |
4551 | { | |
4552 | if (c >= alc) | |
4553 | { | |
4554 | alc *= 2; | |
4555 | secs = ((asection **) | |
4556 | xrealloc (secs, alc * sizeof (asection *))); | |
4557 | } | |
4558 | secs[c] = os->bfd_section; | |
4559 | ++c; | |
4560 | pl->used = true; | |
4561 | } | |
4562 | } | |
4563 | } | |
4564 | ||
4565 | if (l->flags == NULL) | |
4566 | flags = 0; | |
4567 | else | |
4568 | flags = exp_get_vma (l->flags, 0, "phdr flags", | |
4569 | lang_final_phase_enum); | |
4570 | ||
4571 | if (l->at == NULL) | |
4572 | at = 0; | |
4573 | else | |
4574 | at = exp_get_vma (l->at, 0, "phdr load address", | |
4575 | lang_final_phase_enum); | |
4576 | ||
4577 | if (! bfd_record_phdr (output_bfd, l->type, | |
4578 | l->flags == NULL ? false : true, | |
4579 | flags, | |
4580 | l->at == NULL ? false : true, | |
4581 | at, l->filehdr, l->phdrs, c, secs)) | |
4582 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); | |
4583 | } | |
4584 | ||
4585 | free (secs); | |
4586 | ||
4587 | /* Make sure all the phdr assignments succeeded. */ | |
4588 | for (u = lang_output_section_statement.head; | |
4589 | u != NULL; | |
4590 | u = u->output_section_statement.next) | |
4591 | { | |
4592 | struct lang_output_section_phdr_list *pl; | |
4593 | ||
4594 | if (u->output_section_statement.bfd_section == NULL) | |
4595 | continue; | |
4596 | ||
4597 | for (pl = u->output_section_statement.phdrs; | |
4598 | pl != NULL; | |
4599 | pl = pl->next) | |
4600 | if (! pl->used && strcmp (pl->name, "NONE") != 0) | |
4601 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), | |
4602 | u->output_section_statement.name, pl->name); | |
4603 | } | |
4604 | } | |
4605 | ||
4606 | /* Record a list of sections which may not be cross referenced. */ | |
4607 | ||
4608 | void | |
4609 | lang_add_nocrossref (l) | |
4610 | struct lang_nocrossref *l; | |
4611 | { | |
4612 | struct lang_nocrossrefs *n; | |
4613 | ||
4614 | n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); | |
4615 | n->next = nocrossref_list; | |
4616 | n->list = l; | |
4617 | nocrossref_list = n; | |
4618 | ||
4619 | /* Set notice_all so that we get informed about all symbols. */ | |
4620 | link_info.notice_all = true; | |
4621 | } | |
4622 | \f | |
4623 | /* Overlay handling. We handle overlays with some static variables. */ | |
4624 | ||
4625 | /* The overlay virtual address. */ | |
4626 | static etree_type *overlay_vma; | |
4627 | ||
4628 | /* The overlay load address. */ | |
4629 | static etree_type *overlay_lma; | |
4630 | ||
4631 | /* Whether nocrossrefs is set for this overlay. */ | |
4632 | static int overlay_nocrossrefs; | |
4633 | ||
4634 | /* An expression for the maximum section size seen so far. */ | |
4635 | static etree_type *overlay_max; | |
4636 | ||
4637 | /* A list of all the sections in this overlay. */ | |
4638 | ||
89cdebba | 4639 | struct overlay_list { |
252b5132 RH |
4640 | struct overlay_list *next; |
4641 | lang_output_section_statement_type *os; | |
4642 | }; | |
4643 | ||
4644 | static struct overlay_list *overlay_list; | |
4645 | ||
4646 | /* Start handling an overlay. */ | |
4647 | ||
4648 | void | |
4649 | lang_enter_overlay (vma_expr, lma_expr, nocrossrefs) | |
4650 | etree_type *vma_expr; | |
4651 | etree_type *lma_expr; | |
4652 | int nocrossrefs; | |
4653 | { | |
4654 | /* The grammar should prevent nested overlays from occurring. */ | |
4655 | ASSERT (overlay_vma == NULL | |
4656 | && overlay_lma == NULL | |
4657 | && overlay_list == NULL | |
4658 | && overlay_max == NULL); | |
4659 | ||
4660 | overlay_vma = vma_expr; | |
4661 | overlay_lma = lma_expr; | |
4662 | overlay_nocrossrefs = nocrossrefs; | |
4663 | } | |
4664 | ||
4665 | /* Start a section in an overlay. We handle this by calling | |
4666 | lang_enter_output_section_statement with the correct VMA and LMA. */ | |
4667 | ||
4668 | void | |
4669 | lang_enter_overlay_section (name) | |
4670 | const char *name; | |
4671 | { | |
4672 | struct overlay_list *n; | |
4673 | etree_type *size; | |
4674 | ||
4675 | lang_enter_output_section_statement (name, overlay_vma, normal_section, | |
4676 | 0, 0, 0, overlay_lma); | |
4677 | ||
4678 | /* If this is the first section, then base the VMA and LMA of future | |
4679 | sections on this one. This will work correctly even if `.' is | |
4680 | used in the addresses. */ | |
4681 | if (overlay_list == NULL) | |
4682 | { | |
4683 | overlay_vma = exp_nameop (ADDR, name); | |
4684 | overlay_lma = exp_nameop (LOADADDR, name); | |
4685 | } | |
4686 | ||
4687 | /* Remember the section. */ | |
4688 | n = (struct overlay_list *) xmalloc (sizeof *n); | |
4689 | n->os = current_section; | |
4690 | n->next = overlay_list; | |
4691 | overlay_list = n; | |
4692 | ||
4693 | size = exp_nameop (SIZEOF, name); | |
4694 | ||
4695 | /* Adjust the LMA for the next section. */ | |
4696 | overlay_lma = exp_binop ('+', overlay_lma, size); | |
4697 | ||
4698 | /* Arrange to work out the maximum section end address. */ | |
4699 | if (overlay_max == NULL) | |
4700 | overlay_max = size; | |
4701 | else | |
4702 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
4703 | } | |
4704 | ||
4705 | /* Finish a section in an overlay. There isn't any special to do | |
4706 | here. */ | |
4707 | ||
4708 | void | |
4709 | lang_leave_overlay_section (fill, phdrs) | |
4710 | bfd_vma fill; | |
4711 | struct lang_output_section_phdr_list *phdrs; | |
4712 | { | |
4713 | const char *name; | |
4714 | char *clean, *s2; | |
4715 | const char *s1; | |
4716 | char *buf; | |
4717 | ||
4718 | name = current_section->name; | |
4719 | ||
5f992e62 | 4720 | lang_leave_output_section_statement (fill, "*default*", |
562d3460 | 4721 | phdrs, "*default*"); |
252b5132 RH |
4722 | |
4723 | /* Define the magic symbols. */ | |
4724 | ||
4725 | clean = xmalloc (strlen (name) + 1); | |
4726 | s2 = clean; | |
4727 | for (s1 = name; *s1 != '\0'; s1++) | |
4728 | if (isalnum ((unsigned char) *s1) || *s1 == '_') | |
4729 | *s2++ = *s1; | |
4730 | *s2 = '\0'; | |
4731 | ||
4732 | buf = xmalloc (strlen (clean) + sizeof "__load_start_"); | |
4733 | sprintf (buf, "__load_start_%s", clean); | |
4734 | lang_add_assignment (exp_assop ('=', buf, | |
4735 | exp_nameop (LOADADDR, name))); | |
4736 | ||
4737 | buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); | |
4738 | sprintf (buf, "__load_stop_%s", clean); | |
4739 | lang_add_assignment (exp_assop ('=', buf, | |
4740 | exp_binop ('+', | |
4741 | exp_nameop (LOADADDR, name), | |
4742 | exp_nameop (SIZEOF, name)))); | |
4743 | ||
4744 | free (clean); | |
4745 | } | |
4746 | ||
4747 | /* Finish an overlay. If there are any overlay wide settings, this | |
4748 | looks through all the sections in the overlay and sets them. */ | |
4749 | ||
4750 | void | |
562d3460 | 4751 | lang_leave_overlay (fill, memspec, phdrs, lma_memspec) |
252b5132 RH |
4752 | bfd_vma fill; |
4753 | const char *memspec; | |
4754 | struct lang_output_section_phdr_list *phdrs; | |
562d3460 | 4755 | const char *lma_memspec; |
252b5132 RH |
4756 | { |
4757 | lang_memory_region_type *region; | |
562d3460 | 4758 | lang_memory_region_type *lma_region; |
252b5132 RH |
4759 | struct overlay_list *l; |
4760 | struct lang_nocrossref *nocrossref; | |
4761 | ||
4762 | if (memspec == NULL) | |
4763 | region = NULL; | |
4764 | else | |
4765 | region = lang_memory_region_lookup (memspec); | |
4766 | ||
562d3460 TW |
4767 | if (lma_memspec == NULL) |
4768 | lma_region = NULL; | |
4769 | else | |
4770 | lma_region = lang_memory_region_lookup (lma_memspec); | |
4771 | ||
252b5132 RH |
4772 | nocrossref = NULL; |
4773 | ||
4774 | l = overlay_list; | |
4775 | while (l != NULL) | |
4776 | { | |
4777 | struct overlay_list *next; | |
4778 | ||
4779 | if (fill != 0 && l->os->fill == 0) | |
4780 | l->os->fill = fill; | |
4781 | if (region != NULL && l->os->region == NULL) | |
4782 | l->os->region = region; | |
c1eb1488 AM |
4783 | /* We only set lma_region for the first overlay section, as |
4784 | subsequent overlay sections will have load_base set relative | |
02aa14fb AM |
4785 | to the first section. Also, don't set lma_region if |
4786 | load_base is specified. FIXME: There should really be a test | |
4787 | that `AT ( LDADDR )' doesn't conflict with `AT >LMA_REGION' | |
4788 | rather than letting LDADDR simply override LMA_REGION. */ | |
4789 | if (lma_region != NULL && l->os->lma_region == NULL | |
4790 | && l->next == NULL && l->os->load_base == NULL) | |
08da4cac | 4791 | l->os->lma_region = lma_region; |
252b5132 RH |
4792 | if (phdrs != NULL && l->os->phdrs == NULL) |
4793 | l->os->phdrs = phdrs; | |
4794 | ||
4795 | if (overlay_nocrossrefs) | |
4796 | { | |
4797 | struct lang_nocrossref *nc; | |
4798 | ||
4799 | nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); | |
4800 | nc->name = l->os->name; | |
4801 | nc->next = nocrossref; | |
4802 | nocrossref = nc; | |
4803 | } | |
4804 | ||
4805 | next = l->next; | |
4806 | free (l); | |
4807 | l = next; | |
4808 | } | |
4809 | ||
4810 | if (nocrossref != NULL) | |
4811 | lang_add_nocrossref (nocrossref); | |
4812 | ||
4813 | /* Update . for the end of the overlay. */ | |
4814 | lang_add_assignment (exp_assop ('=', ".", | |
4815 | exp_binop ('+', overlay_vma, overlay_max))); | |
4816 | ||
4817 | overlay_vma = NULL; | |
4818 | overlay_lma = NULL; | |
4819 | overlay_nocrossrefs = 0; | |
4820 | overlay_list = NULL; | |
4821 | overlay_max = NULL; | |
4822 | } | |
4823 | \f | |
4824 | /* Version handling. This is only useful for ELF. */ | |
4825 | ||
4826 | /* This global variable holds the version tree that we build. */ | |
4827 | ||
4828 | struct bfd_elf_version_tree *lang_elf_version_info; | |
4829 | ||
4830 | static int | |
4831 | lang_vers_match_lang_c (expr, sym) | |
4832 | struct bfd_elf_version_expr *expr; | |
4833 | const char *sym; | |
4834 | { | |
4835 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4836 | return 1; | |
4837 | return fnmatch (expr->pattern, sym, 0) == 0; | |
4838 | } | |
4839 | ||
4840 | static int | |
4841 | lang_vers_match_lang_cplusplus (expr, sym) | |
4842 | struct bfd_elf_version_expr *expr; | |
4843 | const char *sym; | |
4844 | { | |
4845 | char *alt_sym; | |
4846 | int result; | |
4847 | ||
4848 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4849 | return 1; | |
4850 | ||
08da4cac | 4851 | alt_sym = cplus_demangle (sym, /* DMGL_NO_TPARAMS */ 0); |
252b5132 RH |
4852 | if (!alt_sym) |
4853 | { | |
4854 | /* cplus_demangle (also) returns NULL when it is not a C++ symbol. | |
4855 | Should we early out false in this case? */ | |
4856 | result = fnmatch (expr->pattern, sym, 0) == 0; | |
4857 | } | |
4858 | else | |
4859 | { | |
4860 | result = fnmatch (expr->pattern, alt_sym, 0) == 0; | |
4861 | free (alt_sym); | |
4862 | } | |
4863 | ||
4864 | return result; | |
4865 | } | |
4866 | ||
4867 | static int | |
4868 | lang_vers_match_lang_java (expr, sym) | |
4869 | struct bfd_elf_version_expr *expr; | |
4870 | const char *sym; | |
4871 | { | |
4872 | char *alt_sym; | |
4873 | int result; | |
4874 | ||
4875 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') | |
4876 | return 1; | |
4877 | ||
08da4cac | 4878 | alt_sym = cplus_demangle (sym, DMGL_JAVA); |
252b5132 RH |
4879 | if (!alt_sym) |
4880 | { | |
4881 | /* cplus_demangle (also) returns NULL when it is not a Java symbol. | |
4882 | Should we early out false in this case? */ | |
4883 | result = fnmatch (expr->pattern, sym, 0) == 0; | |
4884 | } | |
4885 | else | |
4886 | { | |
4887 | result = fnmatch (expr->pattern, alt_sym, 0) == 0; | |
4888 | free (alt_sym); | |
4889 | } | |
4890 | ||
4891 | return result; | |
4892 | } | |
4893 | ||
4894 | /* This is called for each variable name or match expression. */ | |
4895 | ||
4896 | struct bfd_elf_version_expr * | |
4897 | lang_new_vers_regex (orig, new, lang) | |
4898 | struct bfd_elf_version_expr *orig; | |
4899 | const char *new; | |
4900 | const char *lang; | |
4901 | { | |
4902 | struct bfd_elf_version_expr *ret; | |
4903 | ||
4904 | ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); | |
4905 | ret->next = orig; | |
4906 | ret->pattern = new; | |
4907 | ||
4908 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
4909 | ret->match = lang_vers_match_lang_c; | |
4910 | else if (strcasecmp (lang, "C++") == 0) | |
4911 | ret->match = lang_vers_match_lang_cplusplus; | |
4912 | else if (strcasecmp (lang, "Java") == 0) | |
4913 | ret->match = lang_vers_match_lang_java; | |
4914 | else | |
4915 | { | |
4916 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
4917 | lang); | |
4918 | ret->match = lang_vers_match_lang_c; | |
4919 | } | |
4920 | ||
4921 | return ret; | |
4922 | } | |
4923 | ||
4924 | /* This is called for each set of variable names and match | |
4925 | expressions. */ | |
4926 | ||
4927 | struct bfd_elf_version_tree * | |
4928 | lang_new_vers_node (globals, locals) | |
4929 | struct bfd_elf_version_expr *globals; | |
4930 | struct bfd_elf_version_expr *locals; | |
4931 | { | |
4932 | struct bfd_elf_version_tree *ret; | |
4933 | ||
4934 | ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret); | |
4935 | ret->next = NULL; | |
4936 | ret->name = NULL; | |
4937 | ret->vernum = 0; | |
4938 | ret->globals = globals; | |
4939 | ret->locals = locals; | |
4940 | ret->deps = NULL; | |
4941 | ret->name_indx = (unsigned int) -1; | |
4942 | ret->used = 0; | |
4943 | return ret; | |
4944 | } | |
4945 | ||
4946 | /* This static variable keeps track of version indices. */ | |
4947 | ||
4948 | static int version_index; | |
4949 | ||
4950 | /* This is called when we know the name and dependencies of the | |
4951 | version. */ | |
4952 | ||
4953 | void | |
4954 | lang_register_vers_node (name, version, deps) | |
4955 | const char *name; | |
4956 | struct bfd_elf_version_tree *version; | |
4957 | struct bfd_elf_version_deps *deps; | |
4958 | { | |
4959 | struct bfd_elf_version_tree *t, **pp; | |
4960 | struct bfd_elf_version_expr *e1; | |
4961 | ||
4962 | /* Make sure this node has a unique name. */ | |
4963 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4964 | if (strcmp (t->name, name) == 0) | |
4965 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
4966 | ||
4967 | /* Check the global and local match names, and make sure there | |
4968 | aren't any duplicates. */ | |
4969 | ||
4970 | for (e1 = version->globals; e1 != NULL; e1 = e1->next) | |
4971 | { | |
4972 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4973 | { | |
4974 | struct bfd_elf_version_expr *e2; | |
4975 | ||
4976 | for (e2 = t->locals; e2 != NULL; e2 = e2->next) | |
4977 | if (strcmp (e1->pattern, e2->pattern) == 0) | |
4978 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
4979 | e1->pattern); | |
4980 | } | |
4981 | } | |
4982 | ||
4983 | for (e1 = version->locals; e1 != NULL; e1 = e1->next) | |
4984 | { | |
4985 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
4986 | { | |
4987 | struct bfd_elf_version_expr *e2; | |
4988 | ||
4989 | for (e2 = t->globals; e2 != NULL; e2 = e2->next) | |
4990 | if (strcmp (e1->pattern, e2->pattern) == 0) | |
4991 | einfo (_("%X%P: duplicate expression `%s' in version information\n"), | |
4992 | e1->pattern); | |
4993 | } | |
4994 | } | |
4995 | ||
4996 | version->deps = deps; | |
4997 | version->name = name; | |
4998 | ++version_index; | |
4999 | version->vernum = version_index; | |
5000 | ||
5001 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) | |
5002 | ; | |
5003 | *pp = version; | |
5004 | } | |
5005 | ||
5006 | /* This is called when we see a version dependency. */ | |
5007 | ||
5008 | struct bfd_elf_version_deps * | |
5009 | lang_add_vers_depend (list, name) | |
5010 | struct bfd_elf_version_deps *list; | |
5011 | const char *name; | |
5012 | { | |
5013 | struct bfd_elf_version_deps *ret; | |
5014 | struct bfd_elf_version_tree *t; | |
5015 | ||
5016 | ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); | |
5017 | ret->next = list; | |
5018 | ||
5019 | for (t = lang_elf_version_info; t != NULL; t = t->next) | |
5020 | { | |
5021 | if (strcmp (t->name, name) == 0) | |
5022 | { | |
5023 | ret->version_needed = t; | |
5024 | return ret; | |
5025 | } | |
5026 | } | |
5027 | ||
5028 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
5029 | ||
5030 | return ret; | |
5031 | } | |
5032 | ||
5033 | static void | |
5034 | lang_do_version_exports_section () | |
5035 | { | |
5036 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
5037 | ||
5038 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
5039 | { | |
5040 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
5041 | char *contents, *p; | |
5042 | bfd_size_type len; | |
5043 | ||
5044 | if (sec == NULL) | |
5045 | continue; | |
5046 | ||
5047 | len = bfd_section_size (is->the_bfd, sec); | |
5048 | contents = xmalloc (len); | |
5049 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) | |
5050 | einfo (_("%X%P: unable to read .exports section contents"), sec); | |
5051 | ||
5052 | p = contents; | |
89cdebba | 5053 | while (p < contents + len) |
252b5132 RH |
5054 | { |
5055 | greg = lang_new_vers_regex (greg, p, NULL); | |
5056 | p = strchr (p, '\0') + 1; | |
5057 | } | |
5058 | ||
5059 | /* Do not free the contents, as we used them creating the regex. */ | |
5060 | ||
5061 | /* Do not include this section in the link. */ | |
5062 | bfd_set_section_flags (is->the_bfd, sec, | |
5063 | bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE); | |
5064 | } | |
5065 | ||
5066 | lreg = lang_new_vers_regex (NULL, "*", NULL); | |
5067 | lang_register_vers_node (command_line.version_exports_section, | |
5068 | lang_new_vers_node (greg, lreg), NULL); | |
5069 | } | |
577a0623 AM |
5070 | |
5071 | void | |
5072 | lang_add_unique (name) | |
5073 | const char *name; | |
5074 | { | |
5075 | struct unique_sections *ent; | |
5076 | ||
5077 | for (ent = unique_section_list; ent; ent = ent->next) | |
5078 | if (strcmp (ent->name, name) == 0) | |
5079 | return; | |
5080 | ||
5081 | ent = (struct unique_sections *) xmalloc (sizeof *ent); | |
5082 | ent->name = xstrdup (name); | |
5083 | ent->next = unique_section_list; | |
5084 | unique_section_list = ent; | |
5085 | } |