Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Linker command language support. |
250d07de | 2 | Copyright (C) 1991-2021 Free Software Foundation, Inc. |
252b5132 | 3 | |
f96b4a7b | 4 | This file is part of the GNU Binutils. |
252b5132 | 5 | |
f96b4a7b | 6 | This program is free software; you can redistribute it and/or modify |
53b2a62f | 7 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
8 | the Free Software Foundation; either version 3 of the License, or |
9 | (at your option) any later version. | |
252b5132 | 10 | |
f96b4a7b | 11 | This program is distributed in the hope that it will be useful, |
53b2a62f NC |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
53b2a62f | 16 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 | 21 | #include "sysdep.h" |
9a24a276 | 22 | #include <limits.h> |
3db64b00 | 23 | #include "bfd.h" |
252b5132 | 24 | #include "libiberty.h" |
42627821 | 25 | #include "filenames.h" |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "obstack.h" |
28 | #include "bfdlink.h" | |
1ff6de03 | 29 | #include "ctf-api.h" |
252b5132 RH |
30 | |
31 | #include "ld.h" | |
32 | #include "ldmain.h" | |
252b5132 RH |
33 | #include "ldexp.h" |
34 | #include "ldlang.h" | |
df2a7313 | 35 | #include <ldgram.h> |
252b5132 RH |
36 | #include "ldlex.h" |
37 | #include "ldmisc.h" | |
38 | #include "ldctor.h" | |
39 | #include "ldfile.h" | |
b71e2778 | 40 | #include "ldemul.h" |
252b5132 RH |
41 | #include "fnmatch.h" |
42 | #include "demangle.h" | |
108ba305 | 43 | #include "hashtab.h" |
0fef4b98 | 44 | #include "elf-bfd.h" |
0381901e | 45 | #if BFD_SUPPORTS_PLUGINS |
5d3236ee | 46 | #include "plugin.h" |
0381901e | 47 | #endif /* BFD_SUPPORTS_PLUGINS */ |
252b5132 | 48 | |
7abb6dea | 49 | #ifndef offsetof |
cf888e70 | 50 | #define offsetof(TYPE, MEMBER) ((size_t) & (((TYPE*) 0)->MEMBER)) |
7abb6dea AM |
51 | #endif |
52 | ||
fc90c280 AM |
53 | /* Convert between addresses in bytes and sizes in octets. |
54 | For currently supported targets, octets_per_byte is always a power | |
55 | of two, so we can use shifts. */ | |
56 | #define TO_ADDR(X) ((X) >> opb_shift) | |
57 | #define TO_SIZE(X) ((X) << opb_shift) | |
58 | ||
59 | /* Local variables. */ | |
252b5132 | 60 | static struct obstack stat_obstack; |
35835446 | 61 | static struct obstack map_obstack; |
252b5132 RH |
62 | |
63 | #define obstack_chunk_alloc xmalloc | |
64 | #define obstack_chunk_free free | |
8be573a7 | 65 | static const char *entry_symbol_default = "start"; |
f38a2680 | 66 | static bool map_head_is_link_order = false; |
252b5132 | 67 | static lang_output_section_statement_type *default_common_section; |
f38a2680 | 68 | static bool map_option_f; |
252b5132 RH |
69 | static bfd_vma print_dot; |
70 | static lang_input_statement_type *first_file; | |
5f992e62 | 71 | static const char *current_target; |
bde18da4 AM |
72 | static lang_statement_list_type *stat_save[10]; |
73 | static lang_statement_list_type **stat_save_ptr = &stat_save[0]; | |
c4b78195 | 74 | static struct unique_sections *unique_section_list; |
16e4ecc0 | 75 | static struct asneeded_minfo *asneeded_list_head; |
fc90c280 | 76 | static unsigned int opb_shift = 0; |
252b5132 | 77 | |
cf888e70 | 78 | /* Forward declarations. */ |
a431bc2e | 79 | static void exp_init_os (etree_type *); |
1579bae1 | 80 | static lang_input_statement_type *lookup_name (const char *); |
1579bae1 | 81 | static void insert_undefined (const char *); |
f38a2680 | 82 | static bool sort_def_symbol (struct bfd_link_hash_entry *, void *); |
1579bae1 AM |
83 | static void print_statement (lang_statement_union_type *, |
84 | lang_output_section_statement_type *); | |
85 | static void print_statement_list (lang_statement_union_type *, | |
86 | lang_output_section_statement_type *); | |
87 | static void print_statements (void); | |
f38a2680 AM |
88 | static void print_input_section (asection *, bool); |
89 | static bool lang_one_common (struct bfd_link_hash_entry *, void *); | |
1579bae1 AM |
90 | static void lang_record_phdrs (void); |
91 | static void lang_do_version_exports_section (void); | |
55255dae L |
92 | static void lang_finalize_version_expr_head |
93 | (struct bfd_elf_version_expr_head *); | |
f38a2680 | 94 | static void lang_do_memory_regions (bool); |
1579bae1 | 95 | |
cf888e70 | 96 | /* Exported variables. */ |
8be573a7 | 97 | const char *output_target; |
252b5132 | 98 | lang_output_section_statement_type *abs_output_section; |
b209b5a6 AM |
99 | /* Header for list of statements corresponding to any files involved in the |
100 | link, either specified from the command-line or added implicitely (eg. | |
101 | archive member used to resolved undefined symbol, wildcard statement from | |
102 | linker script, etc.). Next pointer is in next field of a | |
103 | lang_statement_header_type (reached via header field in a | |
104 | lang_statement_union). */ | |
105 | lang_statement_list_type statement_list; | |
5c1e6d53 | 106 | lang_statement_list_type lang_os_list; |
252b5132 | 107 | lang_statement_list_type *stat_ptr = &statement_list; |
e368bf56 TP |
108 | /* Header for list of statements corresponding to files used in the final |
109 | executable. This can be either object file specified on the command-line | |
110 | or library member resolving an undefined reference. Next pointer is in next | |
111 | field of a lang_input_statement_type (reached via input_statement field in a | |
112 | lang_statement_union). */ | |
87f2a346 | 113 | lang_statement_list_type file_chain = { NULL, NULL }; |
e368bf56 TP |
114 | /* Header for list of statements corresponding to files specified on the |
115 | command-line for linking. It thus contains real object files and archive | |
116 | but not archive members. Next pointer is in next_real_file field of a | |
117 | lang_input_statement_type statement (reached via input_statement field in a | |
118 | lang_statement_union). */ | |
dc27aea4 | 119 | lang_statement_list_type input_file_chain; |
16171946 | 120 | static const char *current_input_file; |
37a141bf | 121 | struct bfd_elf_dynamic_list **current_dynamic_list_p; |
e3e942e9 | 122 | struct bfd_sym_chain entry_symbol = { NULL, NULL }; |
1e281515 | 123 | const char *entry_section = ".text"; |
66be1055 | 124 | struct lang_input_statement_flags input_flags; |
f38a2680 AM |
125 | bool entry_from_cmdline; |
126 | bool lang_has_input_file = false; | |
127 | bool had_output_filename = false; | |
128 | bool lang_float_flag = false; | |
129 | bool delete_output_file_on_failure = false; | |
f5ff60a6 | 130 | struct lang_phdr *lang_phdr_list; |
252b5132 | 131 | struct lang_nocrossrefs *nocrossref_list; |
16e4ecc0 | 132 | struct asneeded_minfo **asneeded_list_tail; |
094e34f2 | 133 | #ifdef ENABLE_LIBCTF |
139633c3 | 134 | static ctf_dict_t *ctf_output; |
094e34f2 | 135 | #endif |
e9ee469a | 136 | |
baf09cba AM |
137 | /* Functions that traverse the linker script and might evaluate |
138 | DEFINED() need to increment this at the start of the traversal. */ | |
420e579c | 139 | int lang_statement_iteration = 0; |
252b5132 | 140 | |
baf09cba AM |
141 | /* Count times through one_lang_size_sections_pass after mark phase. */ |
142 | static int lang_sizing_iteration = 0; | |
143 | ||
61f5d054 L |
144 | /* Return TRUE if the PATTERN argument is a wildcard pattern. |
145 | Although backslashes are treated specially if a pattern contains | |
146 | wildcards, we do not consider the mere presence of a backslash to | |
147 | be enough to cause the pattern to be treated as a wildcard. | |
148 | That lets us handle DOS filenames more naturally. */ | |
149 | #define wildcardp(pattern) (strpbrk ((pattern), "?*[") != NULL) | |
150 | ||
d1778b88 | 151 | #define new_stat(x, y) \ |
1579bae1 | 152 | (x##_type *) new_statement (x##_enum, sizeof (x##_type), y) |
252b5132 | 153 | |
d1778b88 AM |
154 | #define outside_section_address(q) \ |
155 | ((q)->output_offset + (q)->output_section->vma) | |
252b5132 | 156 | |
d1778b88 AM |
157 | #define outside_symbol_address(q) \ |
158 | ((q)->value + outside_section_address (q->section)) | |
252b5132 | 159 | |
1ff6de03 NA |
160 | /* CTF sections smaller than this are not compressed: compression of |
161 | dictionaries this small doesn't gain much, and this lets consumers mmap the | |
162 | sections directly out of the ELF file and use them with no decompression | |
163 | overhead if they want to. */ | |
164 | #define CTF_COMPRESSION_THRESHOLD 4096 | |
165 | ||
1579bae1 AM |
166 | void * |
167 | stat_alloc (size_t size) | |
252b5132 RH |
168 | { |
169 | return obstack_alloc (&stat_obstack, size); | |
170 | } | |
171 | ||
97407faf AM |
172 | static int |
173 | name_match (const char *pattern, const char *name) | |
174 | { | |
175 | if (wildcardp (pattern)) | |
176 | return fnmatch (pattern, name, 0); | |
177 | return strcmp (pattern, name); | |
178 | } | |
179 | ||
16171946 FS |
180 | static char * |
181 | ldirname (const char *name) | |
182 | { | |
183 | const char *base = lbasename (name); | |
184 | char *dirname; | |
185 | ||
186 | while (base > name && IS_DIR_SEPARATOR (base[-1])) | |
187 | --base; | |
188 | if (base == name) | |
189 | return strdup ("."); | |
190 | dirname = strdup (name); | |
191 | dirname[base - name] = '\0'; | |
192 | return dirname; | |
193 | } | |
194 | ||
97407faf AM |
195 | /* If PATTERN is of the form archive:file, return a pointer to the |
196 | separator. If not, return NULL. */ | |
197 | ||
198 | static char * | |
199 | archive_path (const char *pattern) | |
200 | { | |
201 | char *p = NULL; | |
202 | ||
203 | if (link_info.path_separator == 0) | |
204 | return p; | |
205 | ||
206 | p = strchr (pattern, link_info.path_separator); | |
207 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
208 | if (p == NULL || link_info.path_separator != ':') | |
209 | return p; | |
210 | ||
211 | /* Assume a match on the second char is part of drive specifier, | |
212 | as in "c:\silly.dos". */ | |
967928e9 | 213 | if (p == pattern + 1 && ISALPHA (*pattern)) |
97407faf AM |
214 | p = strchr (p + 1, link_info.path_separator); |
215 | #endif | |
216 | return p; | |
217 | } | |
218 | ||
967928e9 AM |
219 | /* Given that FILE_SPEC results in a non-NULL SEP result from archive_path, |
220 | return whether F matches FILE_SPEC. */ | |
221 | ||
f38a2680 | 222 | static bool |
967928e9 AM |
223 | input_statement_is_archive_path (const char *file_spec, char *sep, |
224 | lang_input_statement_type *f) | |
225 | { | |
f38a2680 | 226 | bool match = false; |
967928e9 AM |
227 | |
228 | if ((*(sep + 1) == 0 | |
229 | || name_match (sep + 1, f->filename) == 0) | |
230 | && ((sep != file_spec) | |
231 | == (f->the_bfd != NULL && f->the_bfd->my_archive != NULL))) | |
232 | { | |
f38a2680 | 233 | match = true; |
967928e9 AM |
234 | |
235 | if (sep != file_spec) | |
236 | { | |
607b4833 | 237 | const char *aname = bfd_get_filename (f->the_bfd->my_archive); |
967928e9 AM |
238 | *sep = 0; |
239 | match = name_match (file_spec, aname) == 0; | |
240 | *sep = link_info.path_separator; | |
241 | } | |
242 | } | |
243 | return match; | |
244 | } | |
245 | ||
f38a2680 | 246 | static bool |
d0bf826b AM |
247 | unique_section_p (const asection *sec, |
248 | const lang_output_section_statement_type *os) | |
577a0623 AM |
249 | { |
250 | struct unique_sections *unam; | |
d0d6a25b | 251 | const char *secnam; |
577a0623 | 252 | |
7bdf4127 | 253 | if (!link_info.resolve_section_groups |
d0d6a25b AM |
254 | && sec->owner != NULL |
255 | && bfd_is_group_section (sec->owner, sec)) | |
d0bf826b AM |
256 | return !(os != NULL |
257 | && strcmp (os->name, DISCARD_SECTION_NAME) == 0); | |
d0d6a25b AM |
258 | |
259 | secnam = sec->name; | |
577a0623 | 260 | for (unam = unique_section_list; unam; unam = unam->next) |
97407faf | 261 | if (name_match (unam->name, secnam) == 0) |
f38a2680 | 262 | return true; |
577a0623 | 263 | |
f38a2680 | 264 | return false; |
577a0623 AM |
265 | } |
266 | ||
08da4cac | 267 | /* Generic traversal routines for finding matching sections. */ |
4dec4d4e | 268 | |
8f1732fc AB |
269 | /* Return true if FILE matches a pattern in EXCLUDE_LIST, otherwise return |
270 | false. */ | |
72223188 | 271 | |
f38a2680 | 272 | static bool |
8f1732fc | 273 | walk_wild_file_in_exclude_list (struct name_list *exclude_list, |
6c19b93b | 274 | lang_input_statement_type *file) |
4dec4d4e | 275 | { |
72223188 JJ |
276 | struct name_list *list_tmp; |
277 | ||
8f1732fc | 278 | for (list_tmp = exclude_list; |
72223188 JJ |
279 | list_tmp; |
280 | list_tmp = list_tmp->next) | |
281 | { | |
967928e9 | 282 | char *p = archive_path (list_tmp->name); |
b6bf44ba | 283 | |
967928e9 | 284 | if (p != NULL) |
72223188 | 285 | { |
967928e9 | 286 | if (input_statement_is_archive_path (list_tmp->name, p, file)) |
f38a2680 | 287 | return true; |
72223188 JJ |
288 | } |
289 | ||
967928e9 | 290 | else if (name_match (list_tmp->name, file->filename) == 0) |
f38a2680 | 291 | return true; |
967928e9 AM |
292 | |
293 | /* FIXME: Perhaps remove the following at some stage? Matching | |
294 | unadorned archives like this was never documented and has | |
295 | been superceded by the archive:path syntax. */ | |
296 | else if (file->the_bfd != NULL | |
297 | && file->the_bfd->my_archive != NULL | |
298 | && name_match (list_tmp->name, | |
607b4833 | 299 | bfd_get_filename (file->the_bfd->my_archive)) == 0) |
f38a2680 | 300 | return true; |
72223188 JJ |
301 | } |
302 | ||
f38a2680 | 303 | return false; |
8f1732fc AB |
304 | } |
305 | ||
306 | /* Try processing a section against a wildcard. This just calls | |
307 | the callback unless the filename exclusion list is present | |
308 | and excludes the file. It's hardly ever present so this | |
309 | function is very fast. */ | |
310 | ||
311 | static void | |
312 | walk_wild_consider_section (lang_wild_statement_type *ptr, | |
313 | lang_input_statement_type *file, | |
314 | asection *s, | |
315 | struct wildcard_list *sec, | |
316 | callback_t callback, | |
317 | void *data) | |
318 | { | |
319 | /* Don't process sections from files which were excluded. */ | |
320 | if (walk_wild_file_in_exclude_list (sec->spec.exclude_name_list, file)) | |
321 | return; | |
322 | ||
8c4645b4 | 323 | (*callback) (ptr, sec, s, file, data); |
72223188 JJ |
324 | } |
325 | ||
326 | /* Lowest common denominator routine that can handle everything correctly, | |
327 | but slowly. */ | |
328 | ||
329 | static void | |
330 | walk_wild_section_general (lang_wild_statement_type *ptr, | |
331 | lang_input_statement_type *file, | |
332 | callback_t callback, | |
333 | void *data) | |
334 | { | |
335 | asection *s; | |
336 | struct wildcard_list *sec; | |
b6bf44ba AM |
337 | |
338 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
4dec4d4e | 339 | { |
b6bf44ba | 340 | sec = ptr->section_list; |
2181f54f | 341 | if (sec == NULL) |
8c4645b4 | 342 | (*callback) (ptr, sec, s, file, data); |
2181f54f AM |
343 | |
344 | while (sec != NULL) | |
08da4cac | 345 | { |
f38a2680 | 346 | bool skip = false; |
2181f54f | 347 | |
72223188 | 348 | if (sec->spec.name != NULL) |
b6bf44ba | 349 | { |
fd361982 | 350 | const char *sname = bfd_section_name (s); |
2181f54f | 351 | |
97407faf | 352 | skip = name_match (sec->spec.name, sname) != 0; |
b6bf44ba | 353 | } |
4dec4d4e | 354 | |
b6bf44ba | 355 | if (!skip) |
72223188 | 356 | walk_wild_consider_section (ptr, file, s, sec, callback, data); |
4dec4d4e | 357 | |
2181f54f | 358 | sec = sec->next; |
4dec4d4e RH |
359 | } |
360 | } | |
361 | } | |
362 | ||
72223188 JJ |
363 | /* Routines to find a single section given its name. If there's more |
364 | than one section with that name, we report that. */ | |
365 | ||
366 | typedef struct | |
367 | { | |
368 | asection *found_section; | |
f38a2680 | 369 | bool multiple_sections_found; |
72223188 JJ |
370 | } section_iterator_callback_data; |
371 | ||
f38a2680 | 372 | static bool |
91d6fa6a | 373 | section_iterator_callback (bfd *abfd ATTRIBUTE_UNUSED, asection *s, void *data) |
72223188 | 374 | { |
1e9cc1c2 | 375 | section_iterator_callback_data *d = (section_iterator_callback_data *) data; |
72223188 JJ |
376 | |
377 | if (d->found_section != NULL) | |
378 | { | |
f38a2680 AM |
379 | d->multiple_sections_found = true; |
380 | return true; | |
72223188 JJ |
381 | } |
382 | ||
383 | d->found_section = s; | |
f38a2680 | 384 | return false; |
72223188 JJ |
385 | } |
386 | ||
387 | static asection * | |
388 | find_section (lang_input_statement_type *file, | |
389 | struct wildcard_list *sec, | |
f38a2680 | 390 | bool *multiple_sections_found) |
72223188 | 391 | { |
f38a2680 | 392 | section_iterator_callback_data cb_data = { NULL, false }; |
72223188 | 393 | |
329c1c86 | 394 | bfd_get_section_by_name_if (file->the_bfd, sec->spec.name, |
72223188 JJ |
395 | section_iterator_callback, &cb_data); |
396 | *multiple_sections_found = cb_data.multiple_sections_found; | |
397 | return cb_data.found_section; | |
398 | } | |
399 | ||
400 | /* Code for handling simple wildcards without going through fnmatch, | |
401 | which can be expensive because of charset translations etc. */ | |
402 | ||
403 | /* A simple wild is a literal string followed by a single '*', | |
404 | where the literal part is at least 4 characters long. */ | |
405 | ||
f38a2680 | 406 | static bool |
72223188 JJ |
407 | is_simple_wild (const char *name) |
408 | { | |
409 | size_t len = strcspn (name, "*?["); | |
410 | return len >= 4 && name[len] == '*' && name[len + 1] == '\0'; | |
411 | } | |
412 | ||
f38a2680 | 413 | static bool |
72223188 JJ |
414 | match_simple_wild (const char *pattern, const char *name) |
415 | { | |
416 | /* The first four characters of the pattern are guaranteed valid | |
417 | non-wildcard characters. So we can go faster. */ | |
418 | if (pattern[0] != name[0] || pattern[1] != name[1] | |
419 | || pattern[2] != name[2] || pattern[3] != name[3]) | |
f38a2680 | 420 | return false; |
72223188 JJ |
421 | |
422 | pattern += 4; | |
423 | name += 4; | |
424 | while (*pattern != '*') | |
425 | if (*name++ != *pattern++) | |
f38a2680 | 426 | return false; |
72223188 | 427 | |
f38a2680 | 428 | return true; |
72223188 JJ |
429 | } |
430 | ||
02ecc8e9 L |
431 | /* Return the numerical value of the init_priority attribute from |
432 | section name NAME. */ | |
433 | ||
9a24a276 AM |
434 | static int |
435 | get_init_priority (const asection *sec) | |
02ecc8e9 | 436 | { |
9a24a276 AM |
437 | const char *name = bfd_section_name (sec); |
438 | const char *dot; | |
02ecc8e9 L |
439 | |
440 | /* GCC uses the following section names for the init_priority | |
9a24a276 | 441 | attribute with numerical values 101 to 65535 inclusive. A |
02ecc8e9 L |
442 | lower value means a higher priority. |
443 | ||
9a24a276 | 444 | 1: .init_array.NNNNN/.fini_array.NNNNN: Where NNNNN is the |
02ecc8e9 L |
445 | decimal numerical value of the init_priority attribute. |
446 | The order of execution in .init_array is forward and | |
447 | .fini_array is backward. | |
9a24a276 | 448 | 2: .ctors.NNNNN/.dtors.NNNNN: Where NNNNN is 65535 minus the |
02ecc8e9 L |
449 | decimal numerical value of the init_priority attribute. |
450 | The order of execution in .ctors is backward and .dtors | |
451 | is forward. | |
9a24a276 AM |
452 | |
453 | .init_array.NNNNN sections would normally be placed in an output | |
454 | .init_array section, .fini_array.NNNNN in .fini_array, | |
455 | .ctors.NNNNN in .ctors, and .dtors.NNNNN in .dtors. This means | |
456 | we should sort by increasing number (and could just use | |
457 | SORT_BY_NAME in scripts). However if .ctors.NNNNN sections are | |
458 | being placed in .init_array (which may also contain | |
459 | .init_array.NNNNN sections) or .dtors.NNNNN sections are being | |
460 | placed in .fini_array then we need to extract the init_priority | |
461 | attribute and sort on that. */ | |
462 | dot = strrchr (name, '.'); | |
463 | if (dot != NULL && ISDIGIT (dot[1])) | |
02ecc8e9 | 464 | { |
9a24a276 AM |
465 | char *end; |
466 | unsigned long init_priority = strtoul (dot + 1, &end, 10); | |
467 | if (*end == 0) | |
468 | { | |
469 | if (dot == name + 6 | |
470 | && (strncmp (name, ".ctors", 6) == 0 | |
471 | || strncmp (name, ".dtors", 6) == 0)) | |
472 | init_priority = 65535 - init_priority; | |
473 | if (init_priority <= INT_MAX) | |
474 | return init_priority; | |
475 | } | |
02ecc8e9 | 476 | } |
9a24a276 | 477 | return -1; |
02ecc8e9 L |
478 | } |
479 | ||
50c77e5d NC |
480 | /* Compare sections ASEC and BSEC according to SORT. */ |
481 | ||
482 | static int | |
483 | compare_section (sort_type sort, asection *asec, asection *bsec) | |
484 | { | |
485 | int ret; | |
9a24a276 | 486 | int a_priority, b_priority; |
50c77e5d NC |
487 | |
488 | switch (sort) | |
489 | { | |
490 | default: | |
491 | abort (); | |
492 | ||
02ecc8e9 | 493 | case by_init_priority: |
9a24a276 AM |
494 | a_priority = get_init_priority (asec); |
495 | b_priority = get_init_priority (bsec); | |
496 | if (a_priority < 0 || b_priority < 0) | |
02ecc8e9 | 497 | goto sort_by_name; |
9a24a276 | 498 | ret = a_priority - b_priority; |
02ecc8e9 L |
499 | if (ret) |
500 | break; | |
501 | else | |
502 | goto sort_by_name; | |
503 | ||
50c77e5d | 504 | case by_alignment_name: |
fd361982 | 505 | ret = bfd_section_alignment (bsec) - bfd_section_alignment (asec); |
50c77e5d NC |
506 | if (ret) |
507 | break; | |
508 | /* Fall through. */ | |
509 | ||
510 | case by_name: | |
dc1e8a47 | 511 | sort_by_name: |
fd361982 | 512 | ret = strcmp (bfd_section_name (asec), bfd_section_name (bsec)); |
50c77e5d NC |
513 | break; |
514 | ||
515 | case by_name_alignment: | |
fd361982 | 516 | ret = strcmp (bfd_section_name (asec), bfd_section_name (bsec)); |
50c77e5d NC |
517 | if (ret) |
518 | break; | |
519 | /* Fall through. */ | |
520 | ||
521 | case by_alignment: | |
fd361982 | 522 | ret = bfd_section_alignment (bsec) - bfd_section_alignment (asec); |
50c77e5d NC |
523 | break; |
524 | } | |
525 | ||
526 | return ret; | |
527 | } | |
528 | ||
329c1c86 | 529 | /* Build a Binary Search Tree to sort sections, unlike insertion sort |
50c77e5d NC |
530 | used in wild_sort(). BST is considerably faster if the number of |
531 | of sections are large. */ | |
532 | ||
533 | static lang_section_bst_type ** | |
534 | wild_sort_fast (lang_wild_statement_type *wild, | |
329c1c86 AM |
535 | struct wildcard_list *sec, |
536 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
537 | asection *section) | |
50c77e5d | 538 | { |
329c1c86 | 539 | lang_section_bst_type **tree; |
50c77e5d | 540 | |
e6f2cbf5 | 541 | tree = &wild->tree; |
50c77e5d | 542 | if (!wild->filenames_sorted |
329c1c86 | 543 | && (sec == NULL || sec->spec.sorted == none)) |
50c77e5d NC |
544 | { |
545 | /* Append at the right end of tree. */ | |
546 | while (*tree) | |
329c1c86 | 547 | tree = &((*tree)->right); |
50c77e5d NC |
548 | return tree; |
549 | } | |
550 | ||
329c1c86 | 551 | while (*tree) |
50c77e5d NC |
552 | { |
553 | /* Find the correct node to append this section. */ | |
329c1c86 AM |
554 | if (compare_section (sec->spec.sorted, section, (*tree)->section) < 0) |
555 | tree = &((*tree)->left); | |
556 | else | |
557 | tree = &((*tree)->right); | |
50c77e5d NC |
558 | } |
559 | ||
560 | return tree; | |
561 | } | |
562 | ||
563 | /* Use wild_sort_fast to build a BST to sort sections. */ | |
564 | ||
565 | static void | |
566 | output_section_callback_fast (lang_wild_statement_type *ptr, | |
329c1c86 AM |
567 | struct wildcard_list *sec, |
568 | asection *section, | |
569 | lang_input_statement_type *file, | |
d0bf826b | 570 | void *output) |
50c77e5d NC |
571 | { |
572 | lang_section_bst_type *node; | |
573 | lang_section_bst_type **tree; | |
d0bf826b | 574 | lang_output_section_statement_type *os; |
50c77e5d | 575 | |
d0bf826b AM |
576 | os = (lang_output_section_statement_type *) output; |
577 | ||
578 | if (unique_section_p (section, os)) | |
50c77e5d NC |
579 | return; |
580 | ||
1e9cc1c2 | 581 | node = (lang_section_bst_type *) xmalloc (sizeof (lang_section_bst_type)); |
50c77e5d NC |
582 | node->left = 0; |
583 | node->right = 0; | |
584 | node->section = section; | |
b209b5a6 | 585 | node->pattern = ptr->section_list; |
50c77e5d NC |
586 | |
587 | tree = wild_sort_fast (ptr, sec, file, section); | |
588 | if (tree != NULL) | |
589 | *tree = node; | |
590 | } | |
591 | ||
592 | /* Convert a sorted sections' BST back to list form. */ | |
593 | ||
594 | static void | |
329c1c86 AM |
595 | output_section_callback_tree_to_list (lang_wild_statement_type *ptr, |
596 | lang_section_bst_type *tree, | |
597 | void *output) | |
50c77e5d NC |
598 | { |
599 | if (tree->left) | |
600 | output_section_callback_tree_to_list (ptr, tree->left, output); | |
601 | ||
b209b5a6 | 602 | lang_add_section (&ptr->children, tree->section, tree->pattern, NULL, |
329c1c86 | 603 | (lang_output_section_statement_type *) output); |
50c77e5d NC |
604 | |
605 | if (tree->right) | |
606 | output_section_callback_tree_to_list (ptr, tree->right, output); | |
607 | ||
608 | free (tree); | |
609 | } | |
610 | ||
72223188 JJ |
611 | /* Specialized, optimized routines for handling different kinds of |
612 | wildcards */ | |
613 | ||
614 | static void | |
615 | walk_wild_section_specs1_wild0 (lang_wild_statement_type *ptr, | |
616 | lang_input_statement_type *file, | |
617 | callback_t callback, | |
618 | void *data) | |
619 | { | |
620 | /* We can just do a hash lookup for the section with the right name. | |
621 | But if that lookup discovers more than one section with the name | |
622 | (should be rare), we fall back to the general algorithm because | |
623 | we would otherwise have to sort the sections to make sure they | |
624 | get processed in the bfd's order. */ | |
f38a2680 | 625 | bool multiple_sections_found; |
72223188 JJ |
626 | struct wildcard_list *sec0 = ptr->handler_data[0]; |
627 | asection *s0 = find_section (file, sec0, &multiple_sections_found); | |
628 | ||
629 | if (multiple_sections_found) | |
630 | walk_wild_section_general (ptr, file, callback, data); | |
631 | else if (s0) | |
632 | walk_wild_consider_section (ptr, file, s0, sec0, callback, data); | |
633 | } | |
634 | ||
635 | static void | |
636 | walk_wild_section_specs1_wild1 (lang_wild_statement_type *ptr, | |
637 | lang_input_statement_type *file, | |
638 | callback_t callback, | |
639 | void *data) | |
640 | { | |
641 | asection *s; | |
642 | struct wildcard_list *wildsec0 = ptr->handler_data[0]; | |
643 | ||
644 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
645 | { | |
fd361982 | 646 | const char *sname = bfd_section_name (s); |
f38a2680 | 647 | bool skip = !match_simple_wild (wildsec0->spec.name, sname); |
72223188 JJ |
648 | |
649 | if (!skip) | |
650 | walk_wild_consider_section (ptr, file, s, wildsec0, callback, data); | |
651 | } | |
652 | } | |
653 | ||
654 | static void | |
655 | walk_wild_section_specs2_wild1 (lang_wild_statement_type *ptr, | |
656 | lang_input_statement_type *file, | |
657 | callback_t callback, | |
658 | void *data) | |
659 | { | |
660 | asection *s; | |
661 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
662 | struct wildcard_list *wildsec1 = ptr->handler_data[1]; | |
f38a2680 | 663 | bool multiple_sections_found; |
72223188 JJ |
664 | asection *s0 = find_section (file, sec0, &multiple_sections_found); |
665 | ||
666 | if (multiple_sections_found) | |
667 | { | |
668 | walk_wild_section_general (ptr, file, callback, data); | |
669 | return; | |
670 | } | |
671 | ||
672 | /* Note that if the section was not found, s0 is NULL and | |
673 | we'll simply never succeed the s == s0 test below. */ | |
674 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
675 | { | |
676 | /* Recall that in this code path, a section cannot satisfy more | |
677 | than one spec, so if s == s0 then it cannot match | |
678 | wildspec1. */ | |
679 | if (s == s0) | |
680 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
681 | else | |
682 | { | |
fd361982 | 683 | const char *sname = bfd_section_name (s); |
f38a2680 | 684 | bool skip = !match_simple_wild (wildsec1->spec.name, sname); |
72223188 JJ |
685 | |
686 | if (!skip) | |
687 | walk_wild_consider_section (ptr, file, s, wildsec1, callback, | |
688 | data); | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
693 | static void | |
694 | walk_wild_section_specs3_wild2 (lang_wild_statement_type *ptr, | |
695 | lang_input_statement_type *file, | |
696 | callback_t callback, | |
697 | void *data) | |
698 | { | |
699 | asection *s; | |
700 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
701 | struct wildcard_list *wildsec1 = ptr->handler_data[1]; | |
702 | struct wildcard_list *wildsec2 = ptr->handler_data[2]; | |
f38a2680 | 703 | bool multiple_sections_found; |
72223188 JJ |
704 | asection *s0 = find_section (file, sec0, &multiple_sections_found); |
705 | ||
706 | if (multiple_sections_found) | |
707 | { | |
708 | walk_wild_section_general (ptr, file, callback, data); | |
709 | return; | |
710 | } | |
711 | ||
712 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
713 | { | |
714 | if (s == s0) | |
715 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
716 | else | |
717 | { | |
fd361982 | 718 | const char *sname = bfd_section_name (s); |
f38a2680 | 719 | bool skip = !match_simple_wild (wildsec1->spec.name, sname); |
72223188 JJ |
720 | |
721 | if (!skip) | |
722 | walk_wild_consider_section (ptr, file, s, wildsec1, callback, data); | |
723 | else | |
724 | { | |
725 | skip = !match_simple_wild (wildsec2->spec.name, sname); | |
726 | if (!skip) | |
727 | walk_wild_consider_section (ptr, file, s, wildsec2, callback, | |
728 | data); | |
729 | } | |
730 | } | |
731 | } | |
732 | } | |
733 | ||
734 | static void | |
735 | walk_wild_section_specs4_wild2 (lang_wild_statement_type *ptr, | |
736 | lang_input_statement_type *file, | |
737 | callback_t callback, | |
738 | void *data) | |
739 | { | |
740 | asection *s; | |
741 | struct wildcard_list *sec0 = ptr->handler_data[0]; | |
742 | struct wildcard_list *sec1 = ptr->handler_data[1]; | |
743 | struct wildcard_list *wildsec2 = ptr->handler_data[2]; | |
744 | struct wildcard_list *wildsec3 = ptr->handler_data[3]; | |
f38a2680 | 745 | bool multiple_sections_found; |
72223188 JJ |
746 | asection *s0 = find_section (file, sec0, &multiple_sections_found), *s1; |
747 | ||
748 | if (multiple_sections_found) | |
749 | { | |
750 | walk_wild_section_general (ptr, file, callback, data); | |
751 | return; | |
752 | } | |
753 | ||
754 | s1 = find_section (file, sec1, &multiple_sections_found); | |
755 | if (multiple_sections_found) | |
756 | { | |
757 | walk_wild_section_general (ptr, file, callback, data); | |
758 | return; | |
759 | } | |
760 | ||
761 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
762 | { | |
763 | if (s == s0) | |
764 | walk_wild_consider_section (ptr, file, s, sec0, callback, data); | |
765 | else | |
766 | if (s == s1) | |
767 | walk_wild_consider_section (ptr, file, s, sec1, callback, data); | |
768 | else | |
769 | { | |
fd361982 | 770 | const char *sname = bfd_section_name (s); |
f38a2680 | 771 | bool skip = !match_simple_wild (wildsec2->spec.name, sname); |
72223188 JJ |
772 | |
773 | if (!skip) | |
774 | walk_wild_consider_section (ptr, file, s, wildsec2, callback, | |
775 | data); | |
776 | else | |
777 | { | |
778 | skip = !match_simple_wild (wildsec3->spec.name, sname); | |
779 | if (!skip) | |
780 | walk_wild_consider_section (ptr, file, s, wildsec3, | |
781 | callback, data); | |
782 | } | |
783 | } | |
784 | } | |
785 | } | |
786 | ||
787 | static void | |
788 | walk_wild_section (lang_wild_statement_type *ptr, | |
789 | lang_input_statement_type *file, | |
790 | callback_t callback, | |
791 | void *data) | |
792 | { | |
66be1055 | 793 | if (file->flags.just_syms) |
72223188 JJ |
794 | return; |
795 | ||
796 | (*ptr->walk_wild_section_handler) (ptr, file, callback, data); | |
797 | } | |
798 | ||
799 | /* Returns TRUE when name1 is a wildcard spec that might match | |
800 | something name2 can match. We're conservative: we return FALSE | |
801 | only if the prefixes of name1 and name2 are different up to the | |
802 | first wildcard character. */ | |
803 | ||
f38a2680 | 804 | static bool |
72223188 JJ |
805 | wild_spec_can_overlap (const char *name1, const char *name2) |
806 | { | |
807 | size_t prefix1_len = strcspn (name1, "?*["); | |
808 | size_t prefix2_len = strcspn (name2, "?*["); | |
809 | size_t min_prefix_len; | |
810 | ||
811 | /* Note that if there is no wildcard character, then we treat the | |
812 | terminating 0 as part of the prefix. Thus ".text" won't match | |
813 | ".text." or ".text.*", for example. */ | |
814 | if (name1[prefix1_len] == '\0') | |
815 | prefix1_len++; | |
816 | if (name2[prefix2_len] == '\0') | |
817 | prefix2_len++; | |
818 | ||
819 | min_prefix_len = prefix1_len < prefix2_len ? prefix1_len : prefix2_len; | |
820 | ||
821 | return memcmp (name1, name2, min_prefix_len) == 0; | |
822 | } | |
823 | ||
824 | /* Select specialized code to handle various kinds of wildcard | |
825 | statements. */ | |
826 | ||
827 | static void | |
828 | analyze_walk_wild_section_handler (lang_wild_statement_type *ptr) | |
829 | { | |
830 | int sec_count = 0; | |
831 | int wild_name_count = 0; | |
832 | struct wildcard_list *sec; | |
833 | int signature; | |
834 | int data_counter; | |
835 | ||
836 | ptr->walk_wild_section_handler = walk_wild_section_general; | |
7544697a AM |
837 | ptr->handler_data[0] = NULL; |
838 | ptr->handler_data[1] = NULL; | |
839 | ptr->handler_data[2] = NULL; | |
840 | ptr->handler_data[3] = NULL; | |
e6f2cbf5 | 841 | ptr->tree = NULL; |
72223188 JJ |
842 | |
843 | /* Count how many wildcard_specs there are, and how many of those | |
844 | actually use wildcards in the name. Also, bail out if any of the | |
845 | wildcard names are NULL. (Can this actually happen? | |
846 | walk_wild_section used to test for it.) And bail out if any | |
847 | of the wildcards are more complex than a simple string | |
848 | ending in a single '*'. */ | |
849 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
850 | { | |
851 | ++sec_count; | |
852 | if (sec->spec.name == NULL) | |
853 | return; | |
854 | if (wildcardp (sec->spec.name)) | |
855 | { | |
856 | ++wild_name_count; | |
857 | if (!is_simple_wild (sec->spec.name)) | |
858 | return; | |
859 | } | |
860 | } | |
861 | ||
862 | /* The zero-spec case would be easy to optimize but it doesn't | |
863 | happen in practice. Likewise, more than 4 specs doesn't | |
864 | happen in practice. */ | |
865 | if (sec_count == 0 || sec_count > 4) | |
866 | return; | |
867 | ||
868 | /* Check that no two specs can match the same section. */ | |
869 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
870 | { | |
871 | struct wildcard_list *sec2; | |
872 | for (sec2 = sec->next; sec2 != NULL; sec2 = sec2->next) | |
873 | { | |
874 | if (wild_spec_can_overlap (sec->spec.name, sec2->spec.name)) | |
875 | return; | |
876 | } | |
877 | } | |
878 | ||
879 | signature = (sec_count << 8) + wild_name_count; | |
880 | switch (signature) | |
881 | { | |
882 | case 0x0100: | |
883 | ptr->walk_wild_section_handler = walk_wild_section_specs1_wild0; | |
884 | break; | |
885 | case 0x0101: | |
886 | ptr->walk_wild_section_handler = walk_wild_section_specs1_wild1; | |
887 | break; | |
888 | case 0x0201: | |
889 | ptr->walk_wild_section_handler = walk_wild_section_specs2_wild1; | |
890 | break; | |
891 | case 0x0302: | |
892 | ptr->walk_wild_section_handler = walk_wild_section_specs3_wild2; | |
893 | break; | |
894 | case 0x0402: | |
895 | ptr->walk_wild_section_handler = walk_wild_section_specs4_wild2; | |
896 | break; | |
897 | default: | |
898 | return; | |
899 | } | |
900 | ||
901 | /* Now fill the data array with pointers to the specs, first the | |
902 | specs with non-wildcard names, then the specs with wildcard | |
903 | names. It's OK to process the specs in different order from the | |
904 | given order, because we've already determined that no section | |
905 | will match more than one spec. */ | |
906 | data_counter = 0; | |
907 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
908 | if (!wildcardp (sec->spec.name)) | |
909 | ptr->handler_data[data_counter++] = sec; | |
910 | for (sec = ptr->section_list; sec != NULL; sec = sec->next) | |
911 | if (wildcardp (sec->spec.name)) | |
912 | ptr->handler_data[data_counter++] = sec; | |
913 | } | |
914 | ||
4dec4d4e RH |
915 | /* Handle a wild statement for a single file F. */ |
916 | ||
917 | static void | |
1579bae1 AM |
918 | walk_wild_file (lang_wild_statement_type *s, |
919 | lang_input_statement_type *f, | |
920 | callback_t callback, | |
921 | void *data) | |
4dec4d4e | 922 | { |
8f1732fc AB |
923 | if (walk_wild_file_in_exclude_list (s->exclude_name_list, f)) |
924 | return; | |
925 | ||
4dec4d4e | 926 | if (f->the_bfd == NULL |
0aa7f586 | 927 | || !bfd_check_format (f->the_bfd, bfd_archive)) |
b6bf44ba | 928 | walk_wild_section (s, f, callback, data); |
4dec4d4e RH |
929 | else |
930 | { | |
931 | bfd *member; | |
932 | ||
933 | /* This is an archive file. We must map each member of the | |
934 | archive separately. */ | |
1579bae1 | 935 | member = bfd_openr_next_archived_file (f->the_bfd, NULL); |
4dec4d4e RH |
936 | while (member != NULL) |
937 | { | |
938 | /* When lookup_name is called, it will call the add_symbols | |
939 | entry point for the archive. For each element of the | |
940 | archive which is included, BFD will call ldlang_add_file, | |
941 | which will set the usrdata field of the member to the | |
942 | lang_input_statement. */ | |
00f93c44 AM |
943 | if (bfd_usrdata (member) != NULL) |
944 | walk_wild_section (s, bfd_usrdata (member), callback, data); | |
4dec4d4e RH |
945 | |
946 | member = bfd_openr_next_archived_file (f->the_bfd, member); | |
947 | } | |
948 | } | |
949 | } | |
950 | ||
951 | static void | |
1579bae1 | 952 | walk_wild (lang_wild_statement_type *s, callback_t callback, void *data) |
4dec4d4e | 953 | { |
b6bf44ba | 954 | const char *file_spec = s->filename; |
97407faf | 955 | char *p; |
b6bf44ba AM |
956 | |
957 | if (file_spec == NULL) | |
4dec4d4e RH |
958 | { |
959 | /* Perform the iteration over all files in the list. */ | |
e50d8076 | 960 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 961 | { |
b6bf44ba | 962 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
963 | } |
964 | } | |
97407faf AM |
965 | else if ((p = archive_path (file_spec)) != NULL) |
966 | { | |
967 | LANG_FOR_EACH_INPUT_STATEMENT (f) | |
968 | { | |
967928e9 AM |
969 | if (input_statement_is_archive_path (file_spec, p, f)) |
970 | walk_wild_file (s, f, callback, data); | |
97407faf AM |
971 | } |
972 | } | |
b6bf44ba | 973 | else if (wildcardp (file_spec)) |
4dec4d4e | 974 | { |
e50d8076 | 975 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
4dec4d4e | 976 | { |
68bbb9f7 | 977 | if (fnmatch (file_spec, f->filename, 0) == 0) |
b6bf44ba | 978 | walk_wild_file (s, f, callback, data); |
4dec4d4e RH |
979 | } |
980 | } | |
981 | else | |
982 | { | |
e50d8076 NC |
983 | lang_input_statement_type *f; |
984 | ||
4dec4d4e | 985 | /* Perform the iteration over a single file. */ |
b6bf44ba | 986 | f = lookup_name (file_spec); |
6770ec8c | 987 | if (f) |
b6bf44ba | 988 | walk_wild_file (s, f, callback, data); |
4dec4d4e | 989 | } |
5f992e62 AM |
990 | } |
991 | ||
08da4cac | 992 | /* lang_for_each_statement walks the parse tree and calls the provided |
8658f989 AM |
993 | function for each node, except those inside output section statements |
994 | with constraint set to -1. */ | |
252b5132 | 995 | |
8658f989 | 996 | void |
1579bae1 AM |
997 | lang_for_each_statement_worker (void (*func) (lang_statement_union_type *), |
998 | lang_statement_union_type *s) | |
252b5132 | 999 | { |
1579bae1 | 1000 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
1001 | { |
1002 | func (s); | |
1003 | ||
1004 | switch (s->header.type) | |
1005 | { | |
1006 | case lang_constructors_statement_enum: | |
1007 | lang_for_each_statement_worker (func, constructor_list.head); | |
1008 | break; | |
1009 | case lang_output_section_statement_enum: | |
8658f989 AM |
1010 | if (s->output_section_statement.constraint != -1) |
1011 | lang_for_each_statement_worker | |
1012 | (func, s->output_section_statement.children.head); | |
252b5132 RH |
1013 | break; |
1014 | case lang_wild_statement_enum: | |
6feb9908 AM |
1015 | lang_for_each_statement_worker (func, |
1016 | s->wild_statement.children.head); | |
252b5132 RH |
1017 | break; |
1018 | case lang_group_statement_enum: | |
1019 | lang_for_each_statement_worker (func, | |
1020 | s->group_statement.children.head); | |
1021 | break; | |
1022 | case lang_data_statement_enum: | |
1023 | case lang_reloc_statement_enum: | |
1024 | case lang_object_symbols_statement_enum: | |
1025 | case lang_output_statement_enum: | |
1026 | case lang_target_statement_enum: | |
1027 | case lang_input_section_enum: | |
1028 | case lang_input_statement_enum: | |
1029 | case lang_assignment_statement_enum: | |
1030 | case lang_padding_statement_enum: | |
1031 | case lang_address_statement_enum: | |
1032 | case lang_fill_statement_enum: | |
53d25da6 | 1033 | case lang_insert_statement_enum: |
252b5132 RH |
1034 | break; |
1035 | default: | |
1036 | FAIL (); | |
1037 | break; | |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | void | |
1579bae1 | 1043 | lang_for_each_statement (void (*func) (lang_statement_union_type *)) |
252b5132 | 1044 | { |
08da4cac | 1045 | lang_for_each_statement_worker (func, statement_list.head); |
252b5132 RH |
1046 | } |
1047 | ||
1048 | /*----------------------------------------------------------------------*/ | |
08da4cac | 1049 | |
252b5132 | 1050 | void |
1579bae1 | 1051 | lang_list_init (lang_statement_list_type *list) |
252b5132 | 1052 | { |
1579bae1 | 1053 | list->head = NULL; |
252b5132 RH |
1054 | list->tail = &list->head; |
1055 | } | |
1056 | ||
36983a93 AM |
1057 | static void |
1058 | lang_statement_append (lang_statement_list_type *list, | |
1059 | void *element, | |
1060 | void *field) | |
1061 | { | |
1062 | *(list->tail) = element; | |
1063 | list->tail = field; | |
1064 | } | |
1065 | ||
bde18da4 AM |
1066 | void |
1067 | push_stat_ptr (lang_statement_list_type *new_ptr) | |
1068 | { | |
1069 | if (stat_save_ptr >= stat_save + sizeof (stat_save) / sizeof (stat_save[0])) | |
1070 | abort (); | |
1071 | *stat_save_ptr++ = stat_ptr; | |
1072 | stat_ptr = new_ptr; | |
1073 | } | |
1074 | ||
1075 | void | |
1076 | pop_stat_ptr (void) | |
1077 | { | |
1078 | if (stat_save_ptr <= stat_save) | |
1079 | abort (); | |
1080 | stat_ptr = *--stat_save_ptr; | |
1081 | } | |
1082 | ||
08da4cac | 1083 | /* Build a new statement node for the parse tree. */ |
252b5132 | 1084 | |
08da4cac | 1085 | static lang_statement_union_type * |
1579bae1 AM |
1086 | new_statement (enum statement_enum type, |
1087 | size_t size, | |
1088 | lang_statement_list_type *list) | |
252b5132 | 1089 | { |
d3ce72d0 | 1090 | lang_statement_union_type *new_stmt; |
252b5132 | 1091 | |
988de25b | 1092 | new_stmt = stat_alloc (size); |
d3ce72d0 NC |
1093 | new_stmt->header.type = type; |
1094 | new_stmt->header.next = NULL; | |
1095 | lang_statement_append (list, new_stmt, &new_stmt->header.next); | |
1096 | return new_stmt; | |
252b5132 RH |
1097 | } |
1098 | ||
08da4cac KH |
1099 | /* Build a new input file node for the language. There are several |
1100 | ways in which we treat an input file, eg, we only look at symbols, | |
1101 | or prefix it with a -l etc. | |
252b5132 | 1102 | |
08da4cac | 1103 | We can be supplied with requests for input files more than once; |
396a2467 | 1104 | they may, for example be split over several lines like foo.o(.text) |
d1778b88 | 1105 | foo.o(.data) etc, so when asked for a file we check that we haven't |
08da4cac | 1106 | got it already so we don't duplicate the bfd. */ |
252b5132 | 1107 | |
252b5132 | 1108 | static lang_input_statement_type * |
1579bae1 AM |
1109 | new_afile (const char *name, |
1110 | lang_input_file_enum_type file_type, | |
16171946 FS |
1111 | const char *target, |
1112 | const char *from_filename) | |
252b5132 RH |
1113 | { |
1114 | lang_input_statement_type *p; | |
1115 | ||
f38a2680 | 1116 | lang_has_input_file = true; |
66be1055 | 1117 | |
1f1f5b92 | 1118 | p = new_stat (lang_input_statement, stat_ptr); |
66be1055 AM |
1119 | memset (&p->the_bfd, 0, |
1120 | sizeof (*p) - offsetof (lang_input_statement_type, the_bfd)); | |
16171946 | 1121 | p->extra_search_path = NULL; |
252b5132 | 1122 | p->target = target; |
66be1055 AM |
1123 | p->flags.dynamic = input_flags.dynamic; |
1124 | p->flags.add_DT_NEEDED_for_dynamic = input_flags.add_DT_NEEDED_for_dynamic; | |
1125 | p->flags.add_DT_NEEDED_for_regular = input_flags.add_DT_NEEDED_for_regular; | |
1126 | p->flags.whole_archive = input_flags.whole_archive; | |
f4a23d42 | 1127 | p->flags.sysrooted = input_flags.sysrooted; |
bcb674cf | 1128 | |
252b5132 RH |
1129 | switch (file_type) |
1130 | { | |
1131 | case lang_input_file_is_symbols_only_enum: | |
1132 | p->filename = name; | |
252b5132 | 1133 | p->local_sym_name = name; |
f38a2680 AM |
1134 | p->flags.real = true; |
1135 | p->flags.just_syms = true; | |
252b5132 RH |
1136 | break; |
1137 | case lang_input_file_is_fake_enum: | |
1138 | p->filename = name; | |
252b5132 | 1139 | p->local_sym_name = name; |
252b5132 RH |
1140 | break; |
1141 | case lang_input_file_is_l_enum: | |
d4ae5fb0 | 1142 | if (name[0] == ':' && name[1] != '\0') |
0aa7f586 AM |
1143 | { |
1144 | p->filename = name + 1; | |
f38a2680 | 1145 | p->flags.full_name_provided = true; |
0aa7f586 | 1146 | } |
d4ae5fb0 | 1147 | else |
0aa7f586 | 1148 | p->filename = name; |
ff7a0acf | 1149 | p->local_sym_name = concat ("-l", name, (const char *) NULL); |
f38a2680 AM |
1150 | p->flags.maybe_archive = true; |
1151 | p->flags.real = true; | |
1152 | p->flags.search_dirs = true; | |
252b5132 RH |
1153 | break; |
1154 | case lang_input_file_is_marker_enum: | |
1155 | p->filename = name; | |
252b5132 | 1156 | p->local_sym_name = name; |
f38a2680 | 1157 | p->flags.search_dirs = true; |
252b5132 RH |
1158 | break; |
1159 | case lang_input_file_is_search_file_enum: | |
1160 | p->filename = name; | |
252b5132 | 1161 | p->local_sym_name = name; |
16171946 FS |
1162 | /* If name is a relative path, search the directory of the current linker |
1163 | script first. */ | |
1164 | if (from_filename && !IS_ABSOLUTE_PATH (name)) | |
1165 | p->extra_search_path = ldirname (from_filename); | |
f38a2680 AM |
1166 | p->flags.real = true; |
1167 | p->flags.search_dirs = true; | |
252b5132 RH |
1168 | break; |
1169 | case lang_input_file_is_file_enum: | |
1170 | p->filename = name; | |
252b5132 | 1171 | p->local_sym_name = name; |
f38a2680 | 1172 | p->flags.real = true; |
252b5132 RH |
1173 | break; |
1174 | default: | |
1175 | FAIL (); | |
1176 | } | |
c4b78195 | 1177 | |
36983a93 | 1178 | lang_statement_append (&input_file_chain, p, &p->next_real_file); |
252b5132 RH |
1179 | return p; |
1180 | } | |
1181 | ||
1182 | lang_input_statement_type * | |
1579bae1 AM |
1183 | lang_add_input_file (const char *name, |
1184 | lang_input_file_enum_type file_type, | |
1185 | const char *target) | |
252b5132 | 1186 | { |
3aa2d05a | 1187 | if (name != NULL |
08dedd66 | 1188 | && (*name == '=' || startswith (name, "$SYSROOT"))) |
bfa23434 HPN |
1189 | { |
1190 | lang_input_statement_type *ret; | |
1191 | char *sysrooted_name | |
3aa2d05a NC |
1192 | = concat (ld_sysroot, |
1193 | name + (*name == '=' ? 1 : strlen ("$SYSROOT")), | |
1194 | (const char *) NULL); | |
bfa23434 HPN |
1195 | |
1196 | /* We've now forcibly prepended the sysroot, making the input | |
1197 | file independent of the context. Therefore, temporarily | |
1198 | force a non-sysrooted context for this statement, so it won't | |
1199 | get the sysroot prepended again when opened. (N.B. if it's a | |
1200 | script, any child nodes with input files starting with "/" | |
1201 | will be handled as "sysrooted" as they'll be found to be | |
1202 | within the sysroot subdirectory.) */ | |
1203 | unsigned int outer_sysrooted = input_flags.sysrooted; | |
1204 | input_flags.sysrooted = 0; | |
16171946 | 1205 | ret = new_afile (sysrooted_name, file_type, target, NULL); |
bfa23434 HPN |
1206 | input_flags.sysrooted = outer_sysrooted; |
1207 | return ret; | |
1208 | } | |
1209 | ||
16171946 | 1210 | return new_afile (name, file_type, target, current_input_file); |
252b5132 RH |
1211 | } |
1212 | ||
409d7240 | 1213 | struct out_section_hash_entry |
750877ba L |
1214 | { |
1215 | struct bfd_hash_entry root; | |
409d7240 | 1216 | lang_statement_union_type s; |
750877ba L |
1217 | }; |
1218 | ||
1219 | /* The hash table. */ | |
1220 | ||
409d7240 | 1221 | static struct bfd_hash_table output_section_statement_table; |
750877ba | 1222 | |
384a9dda | 1223 | /* Support routines for the hash table used by lang_output_section_find, |
750877ba L |
1224 | initialize the table, fill in an entry and remove the table. */ |
1225 | ||
1226 | static struct bfd_hash_entry * | |
329c1c86 | 1227 | output_section_statement_newfunc (struct bfd_hash_entry *entry, |
409d7240 AM |
1228 | struct bfd_hash_table *table, |
1229 | const char *string) | |
750877ba | 1230 | { |
384a9dda | 1231 | lang_output_section_statement_type **nextp; |
409d7240 | 1232 | struct out_section_hash_entry *ret; |
384a9dda AM |
1233 | |
1234 | if (entry == NULL) | |
1235 | { | |
1e9cc1c2 | 1236 | entry = (struct bfd_hash_entry *) bfd_hash_allocate (table, |
4724d37e | 1237 | sizeof (*ret)); |
384a9dda AM |
1238 | if (entry == NULL) |
1239 | return entry; | |
1240 | } | |
1241 | ||
1242 | entry = bfd_hash_newfunc (entry, table, string); | |
1243 | if (entry == NULL) | |
1244 | return entry; | |
1245 | ||
409d7240 AM |
1246 | ret = (struct out_section_hash_entry *) entry; |
1247 | memset (&ret->s, 0, sizeof (ret->s)); | |
1248 | ret->s.header.type = lang_output_section_statement_enum; | |
3d9c8f6b AM |
1249 | ret->s.output_section_statement.subsection_alignment = NULL; |
1250 | ret->s.output_section_statement.section_alignment = NULL; | |
409d7240 AM |
1251 | ret->s.output_section_statement.block_value = 1; |
1252 | lang_list_init (&ret->s.output_section_statement.children); | |
1253 | lang_statement_append (stat_ptr, &ret->s, &ret->s.header.next); | |
384a9dda | 1254 | |
218868ba | 1255 | /* For every output section statement added to the list, except the |
5c1e6d53 | 1256 | first one, lang_os_list.tail points to the "next" |
218868ba | 1257 | field of the last element of the list. */ |
5c1e6d53 | 1258 | if (lang_os_list.head != NULL) |
409d7240 AM |
1259 | ret->s.output_section_statement.prev |
1260 | = ((lang_output_section_statement_type *) | |
5c1e6d53 | 1261 | ((char *) lang_os_list.tail |
409d7240 | 1262 | - offsetof (lang_output_section_statement_type, next))); |
218868ba | 1263 | |
384a9dda AM |
1264 | /* GCC's strict aliasing rules prevent us from just casting the |
1265 | address, so we store the pointer in a variable and cast that | |
1266 | instead. */ | |
409d7240 | 1267 | nextp = &ret->s.output_section_statement.next; |
36983a93 | 1268 | lang_statement_append (&lang_os_list, &ret->s, nextp); |
384a9dda | 1269 | return &ret->root; |
750877ba L |
1270 | } |
1271 | ||
1272 | static void | |
409d7240 | 1273 | output_section_statement_table_init (void) |
750877ba | 1274 | { |
409d7240 AM |
1275 | if (!bfd_hash_table_init_n (&output_section_statement_table, |
1276 | output_section_statement_newfunc, | |
1277 | sizeof (struct out_section_hash_entry), | |
66eb6687 | 1278 | 61)) |
df5f2391 | 1279 | einfo (_("%F%P: can not create hash table: %E\n")); |
750877ba L |
1280 | } |
1281 | ||
1282 | static void | |
409d7240 | 1283 | output_section_statement_table_free (void) |
750877ba | 1284 | { |
409d7240 | 1285 | bfd_hash_table_free (&output_section_statement_table); |
750877ba L |
1286 | } |
1287 | ||
08da4cac KH |
1288 | /* Build enough state so that the parser can build its tree. */ |
1289 | ||
252b5132 | 1290 | void |
1579bae1 | 1291 | lang_init (void) |
252b5132 RH |
1292 | { |
1293 | obstack_begin (&stat_obstack, 1000); | |
1294 | ||
1295 | stat_ptr = &statement_list; | |
1296 | ||
409d7240 | 1297 | output_section_statement_table_init (); |
750877ba | 1298 | |
252b5132 RH |
1299 | lang_list_init (stat_ptr); |
1300 | ||
1301 | lang_list_init (&input_file_chain); | |
5c1e6d53 | 1302 | lang_list_init (&lang_os_list); |
252b5132 | 1303 | lang_list_init (&file_chain); |
1579bae1 AM |
1304 | first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum, |
1305 | NULL); | |
08da4cac | 1306 | abs_output_section = |
21401fc7 | 1307 | lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME, 0, 1); |
252b5132 RH |
1308 | |
1309 | abs_output_section->bfd_section = bfd_abs_section_ptr; | |
420e579c | 1310 | |
16e4ecc0 AM |
1311 | asneeded_list_head = NULL; |
1312 | asneeded_list_tail = &asneeded_list_head; | |
252b5132 RH |
1313 | } |
1314 | ||
750877ba L |
1315 | void |
1316 | lang_finish (void) | |
1317 | { | |
409d7240 | 1318 | output_section_statement_table_free (); |
750877ba L |
1319 | } |
1320 | ||
252b5132 | 1321 | /*---------------------------------------------------------------------- |
08da4cac KH |
1322 | A region is an area of memory declared with the |
1323 | MEMORY { name:org=exp, len=exp ... } | |
1324 | syntax. | |
252b5132 | 1325 | |
08da4cac | 1326 | We maintain a list of all the regions here. |
252b5132 | 1327 | |
08da4cac | 1328 | If no regions are specified in the script, then the default is used |
a747ee4d NC |
1329 | which is created when looked up to be the entire data space. |
1330 | ||
1331 | If create is true we are creating a region inside a MEMORY block. | |
1332 | In this case it is probably an error to create a region that has | |
1333 | already been created. If we are not inside a MEMORY block it is | |
1334 | dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION) | |
4a93e180 | 1335 | and so we issue a warning. |
1e0061d2 | 1336 | |
4a93e180 NC |
1337 | Each region has at least one name. The first name is either |
1338 | DEFAULT_MEMORY_REGION or the name given in the MEMORY block. You can add | |
1339 | alias names to an existing region within a script with | |
1340 | REGION_ALIAS (alias, region_name). Each name corresponds to at most one | |
1341 | region. */ | |
252b5132 RH |
1342 | |
1343 | static lang_memory_region_type *lang_memory_region_list; | |
6feb9908 AM |
1344 | static lang_memory_region_type **lang_memory_region_list_tail |
1345 | = &lang_memory_region_list; | |
252b5132 RH |
1346 | |
1347 | lang_memory_region_type * | |
f38a2680 | 1348 | lang_memory_region_lookup (const char *const name, bool create) |
252b5132 | 1349 | { |
4a93e180 NC |
1350 | lang_memory_region_name *n; |
1351 | lang_memory_region_type *r; | |
d3ce72d0 | 1352 | lang_memory_region_type *new_region; |
252b5132 | 1353 | |
9f88b410 RS |
1354 | /* NAME is NULL for LMA memspecs if no region was specified. */ |
1355 | if (name == NULL) | |
1356 | return NULL; | |
1357 | ||
4a93e180 NC |
1358 | for (r = lang_memory_region_list; r != NULL; r = r->next) |
1359 | for (n = &r->name_list; n != NULL; n = n->next) | |
1360 | if (strcmp (n->name, name) == 0) | |
4724d37e RM |
1361 | { |
1362 | if (create) | |
c1c8c1ef | 1363 | einfo (_("%P:%pS: warning: redeclaration of memory region `%s'\n"), |
4724d37e RM |
1364 | NULL, name); |
1365 | return r; | |
1366 | } | |
252b5132 | 1367 | |
a747ee4d | 1368 | if (!create && strcmp (name, DEFAULT_MEMORY_REGION)) |
c1c8c1ef | 1369 | einfo (_("%P:%pS: warning: memory region `%s' not declared\n"), |
dab69f68 | 1370 | NULL, name); |
a747ee4d | 1371 | |
988de25b | 1372 | new_region = stat_alloc (sizeof (lang_memory_region_type)); |
252b5132 | 1373 | |
d3ce72d0 NC |
1374 | new_region->name_list.name = xstrdup (name); |
1375 | new_region->name_list.next = NULL; | |
1376 | new_region->next = NULL; | |
cc9ad334 | 1377 | new_region->origin_exp = NULL; |
d3ce72d0 | 1378 | new_region->origin = 0; |
cc9ad334 | 1379 | new_region->length_exp = NULL; |
d3ce72d0 NC |
1380 | new_region->length = ~(bfd_size_type) 0; |
1381 | new_region->current = 0; | |
1382 | new_region->last_os = NULL; | |
1383 | new_region->flags = 0; | |
1384 | new_region->not_flags = 0; | |
f38a2680 | 1385 | new_region->had_full_message = false; |
252b5132 | 1386 | |
d3ce72d0 NC |
1387 | *lang_memory_region_list_tail = new_region; |
1388 | lang_memory_region_list_tail = &new_region->next; | |
66e28d60 | 1389 | |
d3ce72d0 | 1390 | return new_region; |
252b5132 RH |
1391 | } |
1392 | ||
4a93e180 | 1393 | void |
0aa7f586 | 1394 | lang_memory_region_alias (const char *alias, const char *region_name) |
4a93e180 | 1395 | { |
0aa7f586 AM |
1396 | lang_memory_region_name *n; |
1397 | lang_memory_region_type *r; | |
1398 | lang_memory_region_type *region; | |
4a93e180 NC |
1399 | |
1400 | /* The default region must be unique. This ensures that it is not necessary | |
1401 | to iterate through the name list if someone wants the check if a region is | |
1402 | the default memory region. */ | |
1403 | if (strcmp (region_name, DEFAULT_MEMORY_REGION) == 0 | |
1404 | || strcmp (alias, DEFAULT_MEMORY_REGION) == 0) | |
c1c8c1ef | 1405 | einfo (_("%F%P:%pS: error: alias for default memory region\n"), NULL); |
4a93e180 NC |
1406 | |
1407 | /* Look for the target region and check if the alias is not already | |
1408 | in use. */ | |
1409 | region = NULL; | |
1410 | for (r = lang_memory_region_list; r != NULL; r = r->next) | |
1411 | for (n = &r->name_list; n != NULL; n = n->next) | |
1412 | { | |
4724d37e RM |
1413 | if (region == NULL && strcmp (n->name, region_name) == 0) |
1414 | region = r; | |
1415 | if (strcmp (n->name, alias) == 0) | |
c1c8c1ef | 1416 | einfo (_("%F%P:%pS: error: redefinition of memory region " |
4724d37e RM |
1417 | "alias `%s'\n"), |
1418 | NULL, alias); | |
4a93e180 NC |
1419 | } |
1420 | ||
1421 | /* Check if the target region exists. */ | |
1422 | if (region == NULL) | |
c1c8c1ef | 1423 | einfo (_("%F%P:%pS: error: memory region `%s' " |
4724d37e RM |
1424 | "for alias `%s' does not exist\n"), |
1425 | NULL, region_name, alias); | |
4a93e180 NC |
1426 | |
1427 | /* Add alias to region name list. */ | |
988de25b | 1428 | n = stat_alloc (sizeof (lang_memory_region_name)); |
4a93e180 NC |
1429 | n->name = xstrdup (alias); |
1430 | n->next = region->name_list.next; | |
1431 | region->name_list.next = n; | |
1432 | } | |
1433 | ||
5f992e62 | 1434 | static lang_memory_region_type * |
0aa7f586 | 1435 | lang_memory_default (asection *section) |
252b5132 RH |
1436 | { |
1437 | lang_memory_region_type *p; | |
1438 | ||
1439 | flagword sec_flags = section->flags; | |
1440 | ||
1441 | /* Override SEC_DATA to mean a writable section. */ | |
1442 | if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) | |
1443 | sec_flags |= SEC_DATA; | |
1444 | ||
1579bae1 | 1445 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 RH |
1446 | { |
1447 | if ((p->flags & sec_flags) != 0 | |
1448 | && (p->not_flags & sec_flags) == 0) | |
1449 | { | |
1450 | return p; | |
1451 | } | |
1452 | } | |
f38a2680 | 1453 | return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, false); |
252b5132 RH |
1454 | } |
1455 | ||
24ef1aa7 GM |
1456 | /* Get the output section statement directly from the userdata. */ |
1457 | ||
1458 | lang_output_section_statement_type * | |
1459 | lang_output_section_get (const asection *output_section) | |
1460 | { | |
a48931cc | 1461 | return bfd_section_userdata (output_section); |
24ef1aa7 GM |
1462 | } |
1463 | ||
d127ecce AM |
1464 | /* Find or create an output_section_statement with the given NAME. |
1465 | If CONSTRAINT is non-zero match one with that constraint, otherwise | |
21401fc7 AM |
1466 | match any non-negative constraint. If CREATE is 0 return NULL when |
1467 | no match exists. If CREATE is 1, create an output_section_statement | |
1468 | when no match exists or if CONSTRAINT is SPECIAL. If CREATE is 2, | |
1469 | always make a new output_section_statement. */ | |
d127ecce | 1470 | |
384a9dda | 1471 | lang_output_section_statement_type * |
d127ecce | 1472 | lang_output_section_statement_lookup (const char *name, |
66c103b7 | 1473 | int constraint, |
21401fc7 | 1474 | int create) |
252b5132 | 1475 | { |
409d7240 | 1476 | struct out_section_hash_entry *entry; |
252b5132 | 1477 | |
409d7240 AM |
1478 | entry = ((struct out_section_hash_entry *) |
1479 | bfd_hash_lookup (&output_section_statement_table, name, | |
f38a2680 | 1480 | create != 0, false)); |
384a9dda AM |
1481 | if (entry == NULL) |
1482 | { | |
66c103b7 | 1483 | if (create) |
df5f2391 | 1484 | einfo (_("%F%P: failed creating section `%s': %E\n"), name); |
384a9dda AM |
1485 | return NULL; |
1486 | } | |
252b5132 | 1487 | |
409d7240 | 1488 | if (entry->s.output_section_statement.name != NULL) |
252b5132 | 1489 | { |
384a9dda AM |
1490 | /* We have a section of this name, but it might not have the correct |
1491 | constraint. */ | |
66c103b7 | 1492 | struct out_section_hash_entry *last_ent; |
66c103b7 | 1493 | |
d127ecce | 1494 | name = entry->s.output_section_statement.name; |
21401fc7 AM |
1495 | do |
1496 | { | |
1497 | if (create != 2 | |
1498 | && !(create && constraint == SPECIAL) | |
1499 | && (constraint == entry->s.output_section_statement.constraint | |
1500 | || (constraint == 0 | |
1501 | && entry->s.output_section_statement.constraint >= 0))) | |
1502 | return &entry->s.output_section_statement; | |
1503 | last_ent = entry; | |
1504 | entry = (struct out_section_hash_entry *) entry->root.next; | |
1505 | } | |
1506 | while (entry != NULL | |
1507 | && name == entry->s.output_section_statement.name); | |
252b5132 | 1508 | |
66c103b7 AM |
1509 | if (!create) |
1510 | return NULL; | |
1511 | ||
409d7240 AM |
1512 | entry |
1513 | = ((struct out_section_hash_entry *) | |
1514 | output_section_statement_newfunc (NULL, | |
1515 | &output_section_statement_table, | |
1516 | name)); | |
750877ba | 1517 | if (entry == NULL) |
384a9dda | 1518 | { |
df5f2391 | 1519 | einfo (_("%F%P: failed creating section `%s': %E\n"), name); |
384a9dda AM |
1520 | return NULL; |
1521 | } | |
1522 | entry->root = last_ent->root; | |
1523 | last_ent->root.next = &entry->root; | |
252b5132 | 1524 | } |
384a9dda | 1525 | |
409d7240 AM |
1526 | entry->s.output_section_statement.name = name; |
1527 | entry->s.output_section_statement.constraint = constraint; | |
de34d428 AM |
1528 | entry->s.output_section_statement.dup_output = (create == 2 |
1529 | || constraint == SPECIAL); | |
409d7240 | 1530 | return &entry->s.output_section_statement; |
252b5132 RH |
1531 | } |
1532 | ||
d127ecce AM |
1533 | /* Find the next output_section_statement with the same name as OS. |
1534 | If CONSTRAINT is non-zero, find one with that constraint otherwise | |
1535 | match any non-negative constraint. */ | |
1536 | ||
1537 | lang_output_section_statement_type * | |
1538 | next_matching_output_section_statement (lang_output_section_statement_type *os, | |
1539 | int constraint) | |
1540 | { | |
1541 | /* All output_section_statements are actually part of a | |
1542 | struct out_section_hash_entry. */ | |
1543 | struct out_section_hash_entry *entry = (struct out_section_hash_entry *) | |
1544 | ((char *) os | |
1545 | - offsetof (struct out_section_hash_entry, s.output_section_statement)); | |
1546 | const char *name = os->name; | |
1547 | ||
1548 | ASSERT (name == entry->root.string); | |
1549 | do | |
1550 | { | |
1551 | entry = (struct out_section_hash_entry *) entry->root.next; | |
1552 | if (entry == NULL | |
1553 | || name != entry->s.output_section_statement.name) | |
1554 | return NULL; | |
1555 | } | |
1556 | while (constraint != entry->s.output_section_statement.constraint | |
1557 | && (constraint != 0 | |
1558 | || entry->s.output_section_statement.constraint < 0)); | |
1559 | ||
1560 | return &entry->s.output_section_statement; | |
1561 | } | |
1562 | ||
afd7a018 AM |
1563 | /* A variant of lang_output_section_find used by place_orphan. |
1564 | Returns the output statement that should precede a new output | |
1565 | statement for SEC. If an exact match is found on certain flags, | |
1566 | sets *EXACT too. */ | |
1567 | ||
1568 | lang_output_section_statement_type * | |
1569 | lang_output_section_find_by_flags (const asection *sec, | |
93638471 | 1570 | flagword sec_flags, |
390fbbf1 AM |
1571 | lang_output_section_statement_type **exact, |
1572 | lang_match_sec_type_func match_type) | |
afd7a018 AM |
1573 | { |
1574 | lang_output_section_statement_type *first, *look, *found; | |
93638471 | 1575 | flagword look_flags, differ; |
afd7a018 AM |
1576 | |
1577 | /* We know the first statement on this list is *ABS*. May as well | |
1578 | skip it. */ | |
8ce18f9c | 1579 | first = (void *) lang_os_list.head; |
afd7a018 AM |
1580 | first = first->next; |
1581 | ||
1582 | /* First try for an exact match. */ | |
1583 | found = NULL; | |
1584 | for (look = first; look; look = look->next) | |
1585 | { | |
d9d94ac8 | 1586 | look_flags = look->flags; |
afd7a018 | 1587 | if (look->bfd_section != NULL) |
ecca9871 | 1588 | { |
d9d94ac8 | 1589 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1590 | if (match_type && !match_type (link_info.output_bfd, |
1591 | look->bfd_section, | |
390fbbf1 | 1592 | sec->owner, sec)) |
ecca9871 L |
1593 | continue; |
1594 | } | |
d9d94ac8 AM |
1595 | differ = look_flags ^ sec_flags; |
1596 | if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
1597 | | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
afd7a018 AM |
1598 | found = look; |
1599 | } | |
1600 | if (found != NULL) | |
1601 | { | |
390fbbf1 AM |
1602 | if (exact != NULL) |
1603 | *exact = found; | |
afd7a018 AM |
1604 | return found; |
1605 | } | |
1606 | ||
d9d94ac8 AM |
1607 | if ((sec_flags & SEC_CODE) != 0 |
1608 | && (sec_flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1609 | { |
1610 | /* Try for a rw code section. */ | |
1611 | for (look = first; look; look = look->next) | |
1612 | { | |
d9d94ac8 | 1613 | look_flags = look->flags; |
afd7a018 | 1614 | if (look->bfd_section != NULL) |
ecca9871 | 1615 | { |
d9d94ac8 | 1616 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1617 | if (match_type && !match_type (link_info.output_bfd, |
1618 | look->bfd_section, | |
390fbbf1 | 1619 | sec->owner, sec)) |
ecca9871 L |
1620 | continue; |
1621 | } | |
d9d94ac8 AM |
1622 | differ = look_flags ^ sec_flags; |
1623 | if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1624 | | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
afd7a018 AM |
1625 | found = look; |
1626 | } | |
afd7a018 | 1627 | } |
d9d94ac8 AM |
1628 | else if ((sec_flags & SEC_READONLY) != 0 |
1629 | && (sec_flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1630 | { |
1631 | /* .rodata can go after .text, .sdata2 after .rodata. */ | |
1632 | for (look = first; look; look = look->next) | |
1633 | { | |
d9d94ac8 | 1634 | look_flags = look->flags; |
afd7a018 | 1635 | if (look->bfd_section != NULL) |
ecca9871 | 1636 | { |
d9d94ac8 | 1637 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1638 | if (match_type && !match_type (link_info.output_bfd, |
1639 | look->bfd_section, | |
390fbbf1 | 1640 | sec->owner, sec)) |
ecca9871 L |
1641 | continue; |
1642 | } | |
d9d94ac8 AM |
1643 | differ = look_flags ^ sec_flags; |
1644 | if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1645 | | SEC_READONLY | SEC_SMALL_DATA)) | |
1646 | || (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1647 | | SEC_READONLY)) | |
1648 | && !(look_flags & SEC_SMALL_DATA))) | |
afd7a018 AM |
1649 | found = look; |
1650 | } | |
afd7a018 | 1651 | } |
d9d94ac8 AM |
1652 | else if ((sec_flags & SEC_THREAD_LOCAL) != 0 |
1653 | && (sec_flags & SEC_ALLOC) != 0) | |
1654 | { | |
1655 | /* .tdata can go after .data, .tbss after .tdata. Treat .tbss | |
1656 | as if it were a loaded section, and don't use match_type. */ | |
f38a2680 | 1657 | bool seen_thread_local = false; |
d9d94ac8 AM |
1658 | |
1659 | match_type = NULL; | |
1660 | for (look = first; look; look = look->next) | |
1661 | { | |
1662 | look_flags = look->flags; | |
1663 | if (look->bfd_section != NULL) | |
1664 | look_flags = look->bfd_section->flags; | |
1665 | ||
1666 | differ = look_flags ^ (sec_flags | SEC_LOAD | SEC_HAS_CONTENTS); | |
1667 | if (!(differ & (SEC_THREAD_LOCAL | SEC_ALLOC))) | |
1668 | { | |
1669 | /* .tdata and .tbss must be adjacent and in that order. */ | |
1670 | if (!(look_flags & SEC_LOAD) | |
1671 | && (sec_flags & SEC_LOAD)) | |
1672 | /* ..so if we're at a .tbss section and we're placing | |
1673 | a .tdata section stop looking and return the | |
1674 | previous section. */ | |
1675 | break; | |
1676 | found = look; | |
f38a2680 | 1677 | seen_thread_local = true; |
d9d94ac8 AM |
1678 | } |
1679 | else if (seen_thread_local) | |
1680 | break; | |
1681 | else if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD))) | |
1682 | found = look; | |
1683 | } | |
1684 | } | |
1685 | else if ((sec_flags & SEC_SMALL_DATA) != 0 | |
1686 | && (sec_flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1687 | { |
1688 | /* .sdata goes after .data, .sbss after .sdata. */ | |
1689 | for (look = first; look; look = look->next) | |
1690 | { | |
d9d94ac8 | 1691 | look_flags = look->flags; |
afd7a018 | 1692 | if (look->bfd_section != NULL) |
ecca9871 | 1693 | { |
d9d94ac8 | 1694 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1695 | if (match_type && !match_type (link_info.output_bfd, |
1696 | look->bfd_section, | |
390fbbf1 | 1697 | sec->owner, sec)) |
ecca9871 L |
1698 | continue; |
1699 | } | |
d9d94ac8 AM |
1700 | differ = look_flags ^ sec_flags; |
1701 | if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1702 | | SEC_THREAD_LOCAL)) | |
1703 | || ((look_flags & SEC_SMALL_DATA) | |
1704 | && !(sec_flags & SEC_HAS_CONTENTS))) | |
afd7a018 AM |
1705 | found = look; |
1706 | } | |
afd7a018 | 1707 | } |
d9d94ac8 AM |
1708 | else if ((sec_flags & SEC_HAS_CONTENTS) != 0 |
1709 | && (sec_flags & SEC_ALLOC) != 0) | |
afd7a018 AM |
1710 | { |
1711 | /* .data goes after .rodata. */ | |
1712 | for (look = first; look; look = look->next) | |
1713 | { | |
d9d94ac8 | 1714 | look_flags = look->flags; |
afd7a018 | 1715 | if (look->bfd_section != NULL) |
ecca9871 | 1716 | { |
d9d94ac8 | 1717 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1718 | if (match_type && !match_type (link_info.output_bfd, |
1719 | look->bfd_section, | |
390fbbf1 | 1720 | sec->owner, sec)) |
ecca9871 L |
1721 | continue; |
1722 | } | |
d9d94ac8 AM |
1723 | differ = look_flags ^ sec_flags; |
1724 | if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | |
1725 | | SEC_SMALL_DATA | SEC_THREAD_LOCAL))) | |
afd7a018 AM |
1726 | found = look; |
1727 | } | |
afd7a018 | 1728 | } |
d9d94ac8 | 1729 | else if ((sec_flags & SEC_ALLOC) != 0) |
afd7a018 | 1730 | { |
07890c07 | 1731 | /* .bss goes after any other alloc section. */ |
390fbbf1 | 1732 | for (look = first; look; look = look->next) |
ecca9871 | 1733 | { |
d9d94ac8 | 1734 | look_flags = look->flags; |
390fbbf1 AM |
1735 | if (look->bfd_section != NULL) |
1736 | { | |
d9d94ac8 | 1737 | look_flags = look->bfd_section->flags; |
f13a99db AM |
1738 | if (match_type && !match_type (link_info.output_bfd, |
1739 | look->bfd_section, | |
390fbbf1 AM |
1740 | sec->owner, sec)) |
1741 | continue; | |
1742 | } | |
d9d94ac8 AM |
1743 | differ = look_flags ^ sec_flags; |
1744 | if (!(differ & SEC_ALLOC)) | |
390fbbf1 | 1745 | found = look; |
ecca9871 | 1746 | } |
afd7a018 | 1747 | } |
07890c07 AM |
1748 | else |
1749 | { | |
1750 | /* non-alloc go last. */ | |
1751 | for (look = first; look; look = look->next) | |
1752 | { | |
d9d94ac8 | 1753 | look_flags = look->flags; |
07890c07 | 1754 | if (look->bfd_section != NULL) |
d9d94ac8 AM |
1755 | look_flags = look->bfd_section->flags; |
1756 | differ = look_flags ^ sec_flags; | |
1757 | if (!(differ & SEC_DEBUGGING)) | |
07890c07 AM |
1758 | found = look; |
1759 | } | |
1760 | return found; | |
1761 | } | |
afd7a018 | 1762 | |
390fbbf1 AM |
1763 | if (found || !match_type) |
1764 | return found; | |
1765 | ||
93638471 | 1766 | return lang_output_section_find_by_flags (sec, sec_flags, NULL, NULL); |
afd7a018 AM |
1767 | } |
1768 | ||
1769 | /* Find the last output section before given output statement. | |
1770 | Used by place_orphan. */ | |
1771 | ||
1772 | static asection * | |
1773 | output_prev_sec_find (lang_output_section_statement_type *os) | |
1774 | { | |
afd7a018 AM |
1775 | lang_output_section_statement_type *lookup; |
1776 | ||
218868ba | 1777 | for (lookup = os->prev; lookup != NULL; lookup = lookup->prev) |
afd7a018 | 1778 | { |
66c103b7 | 1779 | if (lookup->constraint < 0) |
afd7a018 | 1780 | continue; |
afd7a018 AM |
1781 | |
1782 | if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL) | |
218868ba | 1783 | return lookup->bfd_section; |
afd7a018 AM |
1784 | } |
1785 | ||
1786 | return NULL; | |
1787 | } | |
1788 | ||
53d25da6 AM |
1789 | /* Look for a suitable place for a new output section statement. The |
1790 | idea is to skip over anything that might be inside a SECTIONS {} | |
1791 | statement in a script, before we find another output section | |
1792 | statement. Assignments to "dot" before an output section statement | |
0fa4d7cf AM |
1793 | are assumed to belong to it, except in two cases; The first |
1794 | assignment to dot, and assignments before non-alloc sections. | |
1795 | Otherwise we might put an orphan before . = . + SIZEOF_HEADERS or | |
1796 | similar assignments that set the initial address, or we might | |
1797 | insert non-alloc note sections among assignments setting end of | |
1798 | image symbols. */ | |
53d25da6 AM |
1799 | |
1800 | static lang_statement_union_type ** | |
1801 | insert_os_after (lang_output_section_statement_type *after) | |
1802 | { | |
1803 | lang_statement_union_type **where; | |
1804 | lang_statement_union_type **assign = NULL; | |
f38a2680 | 1805 | bool ignore_first; |
53d25da6 | 1806 | |
8ce18f9c | 1807 | ignore_first = after == (void *) lang_os_list.head; |
53d25da6 AM |
1808 | |
1809 | for (where = &after->header.next; | |
1810 | *where != NULL; | |
1811 | where = &(*where)->header.next) | |
1812 | { | |
1813 | switch ((*where)->header.type) | |
1814 | { | |
1815 | case lang_assignment_statement_enum: | |
1816 | if (assign == NULL) | |
1817 | { | |
1818 | lang_assignment_statement_type *ass; | |
1819 | ||
1820 | ass = &(*where)->assignment_statement; | |
1821 | if (ass->exp->type.node_class != etree_assert | |
1822 | && ass->exp->assign.dst[0] == '.' | |
73589426 AM |
1823 | && ass->exp->assign.dst[1] == 0) |
1824 | { | |
1825 | if (!ignore_first) | |
1826 | assign = where; | |
f38a2680 | 1827 | ignore_first = false; |
73589426 | 1828 | } |
53d25da6 | 1829 | } |
53d25da6 AM |
1830 | continue; |
1831 | case lang_wild_statement_enum: | |
1832 | case lang_input_section_enum: | |
1833 | case lang_object_symbols_statement_enum: | |
1834 | case lang_fill_statement_enum: | |
1835 | case lang_data_statement_enum: | |
1836 | case lang_reloc_statement_enum: | |
1837 | case lang_padding_statement_enum: | |
1838 | case lang_constructors_statement_enum: | |
1839 | assign = NULL; | |
f38a2680 | 1840 | ignore_first = false; |
53d25da6 AM |
1841 | continue; |
1842 | case lang_output_section_statement_enum: | |
1843 | if (assign != NULL) | |
0fa4d7cf AM |
1844 | { |
1845 | asection *s = (*where)->output_section_statement.bfd_section; | |
1846 | ||
249b2a84 L |
1847 | if (s == NULL |
1848 | || s->map_head.s == NULL | |
1849 | || (s->flags & SEC_ALLOC) != 0) | |
0fa4d7cf AM |
1850 | where = assign; |
1851 | } | |
53d25da6 AM |
1852 | break; |
1853 | case lang_input_statement_enum: | |
1854 | case lang_address_statement_enum: | |
1855 | case lang_target_statement_enum: | |
1856 | case lang_output_statement_enum: | |
1857 | case lang_group_statement_enum: | |
1858 | case lang_insert_statement_enum: | |
1859 | continue; | |
1860 | } | |
1861 | break; | |
1862 | } | |
1863 | ||
1864 | return where; | |
1865 | } | |
1866 | ||
afd7a018 | 1867 | lang_output_section_statement_type * |
7b986e99 | 1868 | lang_insert_orphan (asection *s, |
afd7a018 | 1869 | const char *secname, |
8a99a385 | 1870 | int constraint, |
afd7a018 AM |
1871 | lang_output_section_statement_type *after, |
1872 | struct orphan_save *place, | |
1873 | etree_type *address, | |
1874 | lang_statement_list_type *add_child) | |
1875 | { | |
afd7a018 | 1876 | lang_statement_list_type add; |
afd7a018 AM |
1877 | lang_output_section_statement_type *os; |
1878 | lang_output_section_statement_type **os_tail; | |
1879 | ||
afd7a018 AM |
1880 | /* If we have found an appropriate place for the output section |
1881 | statements for this orphan, add them to our own private list, | |
1882 | inserting them later into the global statement list. */ | |
1883 | if (after != NULL) | |
1884 | { | |
bde18da4 AM |
1885 | lang_list_init (&add); |
1886 | push_stat_ptr (&add); | |
afd7a018 AM |
1887 | } |
1888 | ||
0e1862bb L |
1889 | if (bfd_link_relocatable (&link_info) |
1890 | || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) | |
011aa75f AM |
1891 | address = exp_intop (0); |
1892 | ||
5c1e6d53 | 1893 | os_tail = (lang_output_section_statement_type **) lang_os_list.tail; |
1e9cc1c2 | 1894 | os = lang_enter_output_section_statement (secname, address, normal_section, |
1eec346e | 1895 | NULL, NULL, NULL, constraint, 0); |
011aa75f | 1896 | |
afd7a018 AM |
1897 | if (add_child == NULL) |
1898 | add_child = &os->children; | |
b209b5a6 | 1899 | lang_add_section (add_child, s, NULL, NULL, os); |
afd7a018 | 1900 | |
f77c3948 DJ |
1901 | if (after && (s->flags & (SEC_LOAD | SEC_ALLOC)) != 0) |
1902 | { | |
1903 | const char *region = (after->region | |
1904 | ? after->region->name_list.name | |
1905 | : DEFAULT_MEMORY_REGION); | |
1906 | const char *lma_region = (after->lma_region | |
1907 | ? after->lma_region->name_list.name | |
1908 | : NULL); | |
1909 | lang_leave_output_section_statement (NULL, region, after->phdrs, | |
1910 | lma_region); | |
1911 | } | |
1912 | else | |
1913 | lang_leave_output_section_statement (NULL, DEFAULT_MEMORY_REGION, NULL, | |
1914 | NULL); | |
afd7a018 | 1915 | |
afd7a018 AM |
1916 | /* Restore the global list pointer. */ |
1917 | if (after != NULL) | |
bde18da4 | 1918 | pop_stat_ptr (); |
afd7a018 AM |
1919 | |
1920 | if (after != NULL && os->bfd_section != NULL) | |
1921 | { | |
5daa8fe7 | 1922 | asection *snew, *as; |
f38a2680 AM |
1923 | bool place_after = place->stmt == NULL; |
1924 | bool insert_after = true; | |
afd7a018 AM |
1925 | |
1926 | snew = os->bfd_section; | |
1927 | ||
1928 | /* Shuffle the bfd section list to make the output file look | |
1929 | neater. This is really only cosmetic. */ | |
1930 | if (place->section == NULL | |
8ce18f9c | 1931 | && after != (void *) lang_os_list.head) |
afd7a018 AM |
1932 | { |
1933 | asection *bfd_section = after->bfd_section; | |
1934 | ||
1935 | /* If the output statement hasn't been used to place any input | |
1936 | sections (and thus doesn't have an output bfd_section), | |
1937 | look for the closest prior output statement having an | |
1938 | output section. */ | |
1939 | if (bfd_section == NULL) | |
1940 | bfd_section = output_prev_sec_find (after); | |
1941 | ||
1942 | if (bfd_section != NULL && bfd_section != snew) | |
1943 | place->section = &bfd_section->next; | |
1944 | } | |
1945 | ||
1946 | if (place->section == NULL) | |
f13a99db | 1947 | place->section = &link_info.output_bfd->sections; |
afd7a018 | 1948 | |
5daa8fe7 | 1949 | as = *place->section; |
5e542ba7 MS |
1950 | |
1951 | if (!as) | |
329c1c86 AM |
1952 | { |
1953 | /* Put the section at the end of the list. */ | |
5e542ba7 MS |
1954 | |
1955 | /* Unlink the section. */ | |
f13a99db | 1956 | bfd_section_list_remove (link_info.output_bfd, snew); |
5e542ba7 MS |
1957 | |
1958 | /* Now tack it back on in the right place. */ | |
f13a99db | 1959 | bfd_section_list_append (link_info.output_bfd, snew); |
329c1c86 | 1960 | } |
1887ae73 L |
1961 | else if ((bfd_get_flavour (link_info.output_bfd) |
1962 | == bfd_target_elf_flavour) | |
1963 | && (bfd_get_flavour (s->owner) | |
1964 | == bfd_target_elf_flavour) | |
1965 | && ((elf_section_type (s) == SHT_NOTE | |
1966 | && (s->flags & SEC_LOAD) != 0) | |
1967 | || (elf_section_type (as) == SHT_NOTE | |
1968 | && (as->flags & SEC_LOAD) != 0))) | |
1969 | { | |
1970 | /* Make sure that output note sections are grouped and sorted | |
1971 | by alignments when inserting a note section or insert a | |
1972 | section after a note section, */ | |
1973 | asection *sec; | |
1974 | /* A specific section after which the output note section | |
1975 | should be placed. */ | |
1976 | asection *after_sec; | |
1977 | /* True if we need to insert the orphan section after a | |
1978 | specific section to maintain output note section order. */ | |
f38a2680 | 1979 | bool after_sec_note = false; |
f3e660db L |
1980 | |
1981 | static asection *first_orphan_note = NULL; | |
1887ae73 L |
1982 | |
1983 | /* Group and sort output note section by alignments in | |
1984 | ascending order. */ | |
1985 | after_sec = NULL; | |
1986 | if (elf_section_type (s) == SHT_NOTE | |
1987 | && (s->flags & SEC_LOAD) != 0) | |
1988 | { | |
f3e660db L |
1989 | /* Search from the beginning for the last output note |
1990 | section with equal or larger alignments. NB: Don't | |
1991 | place orphan note section after non-note sections. */ | |
1887ae73 | 1992 | |
f3e660db L |
1993 | first_orphan_note = NULL; |
1994 | for (sec = link_info.output_bfd->sections; | |
1887ae73 L |
1995 | (sec != NULL |
1996 | && !bfd_is_abs_section (sec)); | |
1997 | sec = sec->next) | |
1998 | if (sec != snew | |
1999 | && elf_section_type (sec) == SHT_NOTE | |
2000 | && (sec->flags & SEC_LOAD) != 0) | |
2001 | { | |
f3e660db L |
2002 | if (!first_orphan_note) |
2003 | first_orphan_note = sec; | |
1887ae73 L |
2004 | if (sec->alignment_power >= s->alignment_power) |
2005 | after_sec = sec; | |
2006 | } | |
f3e660db L |
2007 | else if (first_orphan_note) |
2008 | { | |
2009 | /* Stop if there is non-note section after the first | |
2010 | orphan note section. */ | |
2011 | break; | |
2012 | } | |
1887ae73 | 2013 | |
f3e660db L |
2014 | /* If this will be the first orphan note section, it can |
2015 | be placed at the default location. */ | |
2016 | after_sec_note = first_orphan_note != NULL; | |
2017 | if (after_sec == NULL && after_sec_note) | |
1887ae73 | 2018 | { |
f3e660db L |
2019 | /* If all output note sections have smaller |
2020 | alignments, place the section before all | |
2021 | output orphan note sections. */ | |
2022 | after_sec = first_orphan_note; | |
f38a2680 | 2023 | insert_after = false; |
1887ae73 L |
2024 | } |
2025 | } | |
f3e660db | 2026 | else if (first_orphan_note) |
1887ae73 | 2027 | { |
f3e660db L |
2028 | /* Don't place non-note sections in the middle of orphan |
2029 | note sections. */ | |
f38a2680 | 2030 | after_sec_note = true; |
1887ae73 L |
2031 | after_sec = as; |
2032 | for (sec = as->next; | |
2033 | (sec != NULL | |
2034 | && !bfd_is_abs_section (sec)); | |
2035 | sec = sec->next) | |
2036 | if (elf_section_type (sec) == SHT_NOTE | |
2037 | && (sec->flags & SEC_LOAD) != 0) | |
2038 | after_sec = sec; | |
2039 | } | |
2040 | ||
2041 | if (after_sec_note) | |
2042 | { | |
2043 | if (after_sec) | |
2044 | { | |
f3e660db L |
2045 | /* Search forward to insert OS after AFTER_SEC output |
2046 | statement. */ | |
2047 | lang_output_section_statement_type *stmt, *next; | |
f38a2680 | 2048 | bool found = false; |
f3e660db L |
2049 | for (stmt = after; stmt != NULL; stmt = next) |
2050 | { | |
2051 | next = stmt->next; | |
2052 | if (insert_after) | |
2053 | { | |
2054 | if (stmt->bfd_section == after_sec) | |
2055 | { | |
f38a2680 AM |
2056 | place_after = true; |
2057 | found = true; | |
f3e660db L |
2058 | after = stmt; |
2059 | break; | |
2060 | } | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | /* If INSERT_AFTER is FALSE, place OS before | |
2065 | AFTER_SEC output statement. */ | |
2066 | if (next && next->bfd_section == after_sec) | |
2067 | { | |
f38a2680 AM |
2068 | place_after = true; |
2069 | found = true; | |
f3e660db L |
2070 | after = stmt; |
2071 | break; | |
2072 | } | |
2073 | } | |
2074 | } | |
2075 | ||
2076 | /* Search backward to insert OS after AFTER_SEC output | |
2077 | statement. */ | |
2078 | if (!found) | |
2079 | for (stmt = after; stmt != NULL; stmt = stmt->prev) | |
1887ae73 | 2080 | { |
f3e660db L |
2081 | if (insert_after) |
2082 | { | |
2083 | if (stmt->bfd_section == after_sec) | |
2084 | { | |
f38a2680 | 2085 | place_after = true; |
f3e660db L |
2086 | after = stmt; |
2087 | break; | |
2088 | } | |
2089 | } | |
2090 | else | |
2091 | { | |
2092 | /* If INSERT_AFTER is FALSE, place OS before | |
2093 | AFTER_SEC output statement. */ | |
2094 | if (stmt->next->bfd_section == after_sec) | |
2095 | { | |
f38a2680 | 2096 | place_after = true; |
f3e660db L |
2097 | after = stmt; |
2098 | break; | |
2099 | } | |
2100 | } | |
1887ae73 L |
2101 | } |
2102 | } | |
2103 | ||
f3e660db L |
2104 | if (after_sec == NULL |
2105 | || (insert_after && after_sec->next != snew) | |
2106 | || (!insert_after && after_sec->prev != snew)) | |
1887ae73 L |
2107 | { |
2108 | /* Unlink the section. */ | |
2109 | bfd_section_list_remove (link_info.output_bfd, snew); | |
2110 | ||
2111 | /* Place SNEW after AFTER_SEC. If AFTER_SEC is NULL, | |
2112 | prepend SNEW. */ | |
2113 | if (after_sec) | |
f3e660db L |
2114 | { |
2115 | if (insert_after) | |
2116 | bfd_section_list_insert_after (link_info.output_bfd, | |
2117 | after_sec, snew); | |
2118 | else | |
2119 | bfd_section_list_insert_before (link_info.output_bfd, | |
2120 | after_sec, snew); | |
2121 | } | |
1887ae73 L |
2122 | else |
2123 | bfd_section_list_prepend (link_info.output_bfd, snew); | |
2124 | } | |
2125 | } | |
2126 | else if (as != snew && as->prev != snew) | |
2127 | { | |
2128 | /* Unlink the section. */ | |
2129 | bfd_section_list_remove (link_info.output_bfd, snew); | |
2130 | ||
2131 | /* Now tack it back on in the right place. */ | |
2132 | bfd_section_list_insert_before (link_info.output_bfd, | |
2133 | as, snew); | |
2134 | } | |
2135 | } | |
5e542ba7 | 2136 | else if (as != snew && as->prev != snew) |
5daa8fe7 L |
2137 | { |
2138 | /* Unlink the section. */ | |
f13a99db | 2139 | bfd_section_list_remove (link_info.output_bfd, snew); |
afd7a018 | 2140 | |
5daa8fe7 | 2141 | /* Now tack it back on in the right place. */ |
f13a99db | 2142 | bfd_section_list_insert_before (link_info.output_bfd, as, snew); |
5daa8fe7 | 2143 | } |
afd7a018 AM |
2144 | |
2145 | /* Save the end of this list. Further ophans of this type will | |
2146 | follow the one we've just added. */ | |
2147 | place->section = &snew->next; | |
2148 | ||
2149 | /* The following is non-cosmetic. We try to put the output | |
2150 | statements in some sort of reasonable order here, because they | |
2151 | determine the final load addresses of the orphan sections. | |
2152 | In addition, placing output statements in the wrong order may | |
2153 | require extra segments. For instance, given a typical | |
2154 | situation of all read-only sections placed in one segment and | |
2155 | following that a segment containing all the read-write | |
2156 | sections, we wouldn't want to place an orphan read/write | |
2157 | section before or amongst the read-only ones. */ | |
2158 | if (add.head != NULL) | |
2159 | { | |
2160 | lang_output_section_statement_type *newly_added_os; | |
2161 | ||
1887ae73 L |
2162 | /* Place OS after AFTER if AFTER_NOTE is TRUE. */ |
2163 | if (place_after) | |
afd7a018 | 2164 | { |
53d25da6 | 2165 | lang_statement_union_type **where = insert_os_after (after); |
afd7a018 AM |
2166 | |
2167 | *add.tail = *where; | |
2168 | *where = add.head; | |
2169 | ||
2170 | place->os_tail = &after->next; | |
2171 | } | |
2172 | else | |
2173 | { | |
2174 | /* Put it after the last orphan statement we added. */ | |
2175 | *add.tail = *place->stmt; | |
2176 | *place->stmt = add.head; | |
2177 | } | |
2178 | ||
2179 | /* Fix the global list pointer if we happened to tack our | |
2180 | new list at the tail. */ | |
bde18da4 AM |
2181 | if (*stat_ptr->tail == add.head) |
2182 | stat_ptr->tail = add.tail; | |
afd7a018 AM |
2183 | |
2184 | /* Save the end of this list. */ | |
2185 | place->stmt = add.tail; | |
2186 | ||
2187 | /* Do the same for the list of output section statements. */ | |
2188 | newly_added_os = *os_tail; | |
2189 | *os_tail = NULL; | |
218868ba AM |
2190 | newly_added_os->prev = (lang_output_section_statement_type *) |
2191 | ((char *) place->os_tail | |
2192 | - offsetof (lang_output_section_statement_type, next)); | |
afd7a018 | 2193 | newly_added_os->next = *place->os_tail; |
218868ba AM |
2194 | if (newly_added_os->next != NULL) |
2195 | newly_added_os->next->prev = newly_added_os; | |
afd7a018 AM |
2196 | *place->os_tail = newly_added_os; |
2197 | place->os_tail = &newly_added_os->next; | |
2198 | ||
2199 | /* Fixing the global list pointer here is a little different. | |
2200 | We added to the list in lang_enter_output_section_statement, | |
2201 | trimmed off the new output_section_statment above when | |
2202 | assigning *os_tail = NULL, but possibly added it back in | |
2203 | the same place when assigning *place->os_tail. */ | |
2204 | if (*os_tail == NULL) | |
5c1e6d53 | 2205 | lang_os_list.tail = (lang_statement_union_type **) os_tail; |
afd7a018 AM |
2206 | } |
2207 | } | |
2208 | return os; | |
2209 | } | |
2210 | ||
16e4ecc0 AM |
2211 | static void |
2212 | lang_print_asneeded (void) | |
2213 | { | |
2214 | struct asneeded_minfo *m; | |
16e4ecc0 AM |
2215 | |
2216 | if (asneeded_list_head == NULL) | |
2217 | return; | |
2218 | ||
1273da04 | 2219 | minfo (_("\nAs-needed library included to satisfy reference by file (symbol)\n\n")); |
16e4ecc0 AM |
2220 | |
2221 | for (m = asneeded_list_head; m != NULL; m = m->next) | |
2222 | { | |
2223 | size_t len; | |
2224 | ||
2225 | minfo ("%s", m->soname); | |
2226 | len = strlen (m->soname); | |
2227 | ||
2228 | if (len >= 29) | |
2229 | { | |
2230 | print_nl (); | |
2231 | len = 0; | |
2232 | } | |
2233 | while (len < 30) | |
2234 | { | |
2235 | print_space (); | |
2236 | ++len; | |
2237 | } | |
2238 | ||
2239 | if (m->ref != NULL) | |
871b3ab2 | 2240 | minfo ("%pB ", m->ref); |
c1c8c1ef | 2241 | minfo ("(%pT)\n", m->name); |
16e4ecc0 AM |
2242 | } |
2243 | } | |
2244 | ||
252b5132 | 2245 | static void |
1579bae1 | 2246 | lang_map_flags (flagword flag) |
252b5132 RH |
2247 | { |
2248 | if (flag & SEC_ALLOC) | |
2249 | minfo ("a"); | |
2250 | ||
2251 | if (flag & SEC_CODE) | |
2252 | minfo ("x"); | |
2253 | ||
2254 | if (flag & SEC_READONLY) | |
2255 | minfo ("r"); | |
2256 | ||
2257 | if (flag & SEC_DATA) | |
2258 | minfo ("w"); | |
2259 | ||
2260 | if (flag & SEC_LOAD) | |
2261 | minfo ("l"); | |
2262 | } | |
2263 | ||
2264 | void | |
1579bae1 | 2265 | lang_map (void) |
252b5132 RH |
2266 | { |
2267 | lang_memory_region_type *m; | |
f38a2680 | 2268 | bool dis_header_printed = false; |
252b5132 | 2269 | |
4d4920ec EB |
2270 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
2271 | { | |
2272 | asection *s; | |
2273 | ||
2274 | if ((file->the_bfd->flags & (BFD_LINKER_CREATED | DYNAMIC)) != 0 | |
66be1055 | 2275 | || file->flags.just_syms) |
4d4920ec EB |
2276 | continue; |
2277 | ||
035801ce FS |
2278 | if (config.print_map_discarded) |
2279 | for (s = file->the_bfd->sections; s != NULL; s = s->next) | |
2280 | if ((s->output_section == NULL | |
2281 | || s->output_section->owner != link_info.output_bfd) | |
2282 | && (s->flags & (SEC_LINKER_CREATED | SEC_KEEP)) == 0) | |
2283 | { | |
2284 | if (! dis_header_printed) | |
2285 | { | |
2286 | fprintf (config.map_file, _("\nDiscarded input sections\n\n")); | |
f38a2680 | 2287 | dis_header_printed = true; |
035801ce | 2288 | } |
4d4920ec | 2289 | |
f38a2680 | 2290 | print_input_section (s, true); |
035801ce | 2291 | } |
4d4920ec EB |
2292 | } |
2293 | ||
252b5132 RH |
2294 | minfo (_("\nMemory Configuration\n\n")); |
2295 | fprintf (config.map_file, "%-16s %-18s %-18s %s\n", | |
2296 | _("Name"), _("Origin"), _("Length"), _("Attributes")); | |
2297 | ||
1579bae1 | 2298 | for (m = lang_memory_region_list; m != NULL; m = m->next) |
252b5132 RH |
2299 | { |
2300 | char buf[100]; | |
2301 | int len; | |
2302 | ||
4a93e180 | 2303 | fprintf (config.map_file, "%-16s ", m->name_list.name); |
252b5132 RH |
2304 | |
2305 | sprintf_vma (buf, m->origin); | |
2306 | minfo ("0x%s ", buf); | |
2307 | len = strlen (buf); | |
2308 | while (len < 16) | |
2309 | { | |
2310 | print_space (); | |
2311 | ++len; | |
2312 | } | |
2313 | ||
2314 | minfo ("0x%V", m->length); | |
2315 | if (m->flags || m->not_flags) | |
2316 | { | |
2317 | #ifndef BFD64 | |
2318 | minfo (" "); | |
2319 | #endif | |
2320 | if (m->flags) | |
2321 | { | |
2322 | print_space (); | |
2323 | lang_map_flags (m->flags); | |
2324 | } | |
2325 | ||
2326 | if (m->not_flags) | |
2327 | { | |
2328 | minfo (" !"); | |
2329 | lang_map_flags (m->not_flags); | |
2330 | } | |
2331 | } | |
2332 | ||
2333 | print_nl (); | |
2334 | } | |
2335 | ||
2336 | fprintf (config.map_file, _("\nLinker script and memory map\n\n")); | |
2337 | ||
0aa7f586 | 2338 | if (!link_info.reduce_memory_overheads) |
35835446 JR |
2339 | { |
2340 | obstack_begin (&map_obstack, 1000); | |
35835446 JR |
2341 | bfd_link_hash_traverse (link_info.hash, sort_def_symbol, 0); |
2342 | } | |
6a846243 | 2343 | expld.phase = lang_fixed_phase_enum; |
fa72205c | 2344 | lang_statement_iteration++; |
252b5132 | 2345 | print_statements (); |
7a2f2d82 | 2346 | |
0aa7f586 AM |
2347 | ldemul_extra_map_file_text (link_info.output_bfd, &link_info, |
2348 | config.map_file); | |
252b5132 RH |
2349 | } |
2350 | ||
f38a2680 | 2351 | static bool |
967928e9 AM |
2352 | sort_def_symbol (struct bfd_link_hash_entry *hash_entry, |
2353 | void *info ATTRIBUTE_UNUSED) | |
35835446 | 2354 | { |
6fcc66ab AM |
2355 | if ((hash_entry->type == bfd_link_hash_defined |
2356 | || hash_entry->type == bfd_link_hash_defweak) | |
2357 | && hash_entry->u.def.section->owner != link_info.output_bfd | |
2358 | && hash_entry->u.def.section->owner != NULL) | |
35835446 | 2359 | { |
6fcc66ab | 2360 | input_section_userdata_type *ud; |
35835446 JR |
2361 | struct map_symbol_def *def; |
2362 | ||
a48931cc | 2363 | ud = bfd_section_userdata (hash_entry->u.def.section); |
6fcc66ab | 2364 | if (!ud) |
35835446 | 2365 | { |
988de25b | 2366 | ud = stat_alloc (sizeof (*ud)); |
a48931cc | 2367 | bfd_set_section_userdata (hash_entry->u.def.section, ud); |
6fcc66ab AM |
2368 | ud->map_symbol_def_tail = &ud->map_symbol_def_head; |
2369 | ud->map_symbol_def_count = 0; | |
35835446 | 2370 | } |
6fcc66ab | 2371 | else if (!ud->map_symbol_def_tail) |
35835446 | 2372 | ud->map_symbol_def_tail = &ud->map_symbol_def_head; |
afd7a018 | 2373 | |
1e9cc1c2 | 2374 | def = (struct map_symbol_def *) obstack_alloc (&map_obstack, sizeof *def); |
35835446 | 2375 | def->entry = hash_entry; |
76d7af2d | 2376 | *(ud->map_symbol_def_tail) = def; |
35835446 | 2377 | ud->map_symbol_def_tail = &def->next; |
02688209 | 2378 | ud->map_symbol_def_count++; |
35835446 | 2379 | } |
f38a2680 | 2380 | return true; |
35835446 JR |
2381 | } |
2382 | ||
252b5132 RH |
2383 | /* Initialize an output section. */ |
2384 | ||
2385 | static void | |
dfa7b0b8 | 2386 | init_os (lang_output_section_statement_type *s, flagword flags) |
252b5132 | 2387 | { |
252b5132 | 2388 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) |
df5f2391 | 2389 | einfo (_("%F%P: illegal use of `%s' section\n"), DISCARD_SECTION_NAME); |
252b5132 | 2390 | |
de34d428 | 2391 | if (!s->dup_output) |
8a99a385 | 2392 | s->bfd_section = bfd_get_section_by_name (link_info.output_bfd, s->name); |
1579bae1 | 2393 | if (s->bfd_section == NULL) |
8a99a385 AM |
2394 | s->bfd_section = bfd_make_section_anyway_with_flags (link_info.output_bfd, |
2395 | s->name, flags); | |
1579bae1 | 2396 | if (s->bfd_section == NULL) |
252b5132 | 2397 | { |
df5f2391 | 2398 | einfo (_("%F%P: output format %s cannot represent section" |
0aa7f586 | 2399 | " called %s: %E\n"), |
f13a99db | 2400 | link_info.output_bfd->xvec->name, s->name); |
252b5132 RH |
2401 | } |
2402 | s->bfd_section->output_section = s->bfd_section; | |
252b5132 | 2403 | s->bfd_section->output_offset = 0; |
e0f6802f | 2404 | |
24ef1aa7 GM |
2405 | /* Set the userdata of the output section to the output section |
2406 | statement to avoid lookup. */ | |
a48931cc | 2407 | bfd_set_section_userdata (s->bfd_section, s); |
24ef1aa7 | 2408 | |
a431bc2e AM |
2409 | /* If there is a base address, make sure that any sections it might |
2410 | mention are initialized. */ | |
2411 | if (s->addr_tree != NULL) | |
2412 | exp_init_os (s->addr_tree); | |
2413 | ||
2414 | if (s->load_base != NULL) | |
2415 | exp_init_os (s->load_base); | |
2416 | ||
7270c5ed | 2417 | /* If supplied an alignment, set it. */ |
3d9c8f6b AM |
2418 | if (s->section_alignment != NULL) |
2419 | s->bfd_section->alignment_power = exp_get_power (s->section_alignment, | |
2420 | "section alignment"); | |
252b5132 RH |
2421 | } |
2422 | ||
2423 | /* Make sure that all output sections mentioned in an expression are | |
2424 | initialized. */ | |
2425 | ||
2426 | static void | |
1579bae1 | 2427 | exp_init_os (etree_type *exp) |
252b5132 RH |
2428 | { |
2429 | switch (exp->type.node_class) | |
2430 | { | |
2431 | case etree_assign: | |
9f4fb502 | 2432 | case etree_provide: |
eab62f2f | 2433 | case etree_provided: |
252b5132 RH |
2434 | exp_init_os (exp->assign.src); |
2435 | break; | |
2436 | ||
2437 | case etree_binary: | |
2438 | exp_init_os (exp->binary.lhs); | |
2439 | exp_init_os (exp->binary.rhs); | |
2440 | break; | |
2441 | ||
2442 | case etree_trinary: | |
2443 | exp_init_os (exp->trinary.cond); | |
2444 | exp_init_os (exp->trinary.lhs); | |
2445 | exp_init_os (exp->trinary.rhs); | |
2446 | break; | |
2447 | ||
b6ca8815 NS |
2448 | case etree_assert: |
2449 | exp_init_os (exp->assert_s.child); | |
2450 | break; | |
afd7a018 | 2451 | |
252b5132 RH |
2452 | case etree_unary: |
2453 | exp_init_os (exp->unary.child); | |
2454 | break; | |
2455 | ||
2456 | case etree_name: | |
2457 | switch (exp->type.node_code) | |
2458 | { | |
2459 | case ADDR: | |
2460 | case LOADADDR: | |
2461 | case SIZEOF: | |
2462 | { | |
2463 | lang_output_section_statement_type *os; | |
2464 | ||
2465 | os = lang_output_section_find (exp->name.name); | |
2466 | if (os != NULL && os->bfd_section == NULL) | |
dfa7b0b8 | 2467 | init_os (os, 0); |
252b5132 RH |
2468 | } |
2469 | } | |
2470 | break; | |
2471 | ||
2472 | default: | |
2473 | break; | |
2474 | } | |
2475 | } | |
9503fd87 | 2476 | \f |
252b5132 | 2477 | static void |
1579bae1 | 2478 | section_already_linked (bfd *abfd, asection *sec, void *data) |
252b5132 | 2479 | { |
1e9cc1c2 | 2480 | lang_input_statement_type *entry = (lang_input_statement_type *) data; |
252b5132 RH |
2481 | |
2482 | /* If we are only reading symbols from this object, then we want to | |
2483 | discard all sections. */ | |
66be1055 | 2484 | if (entry->flags.just_syms) |
252b5132 | 2485 | { |
1449d79b | 2486 | bfd_link_just_syms (abfd, sec, &link_info); |
252b5132 RH |
2487 | return; |
2488 | } | |
2489 | ||
2e84f9c1 AM |
2490 | /* Deal with SHF_EXCLUDE ELF sections. */ |
2491 | if (!bfd_link_relocatable (&link_info) | |
2492 | && (abfd->flags & BFD_PLUGIN) == 0 | |
2493 | && (sec->flags & (SEC_GROUP | SEC_KEEP | SEC_EXCLUDE)) == SEC_EXCLUDE) | |
2494 | sec->output_section = bfd_abs_section_ptr; | |
2495 | ||
ace66bb2 | 2496 | if (!(abfd->flags & DYNAMIC)) |
c77ec726 | 2497 | bfd_section_already_linked (abfd, sec, &link_info); |
252b5132 RH |
2498 | } |
2499 | \f | |
5b5f4e6f AB |
2500 | |
2501 | /* Returns true if SECTION is one we know will be discarded based on its | |
2502 | section flags, otherwise returns false. */ | |
2503 | ||
f38a2680 | 2504 | static bool |
5b5f4e6f AB |
2505 | lang_discard_section_p (asection *section) |
2506 | { | |
f38a2680 | 2507 | bool discard; |
5b5f4e6f AB |
2508 | flagword flags = section->flags; |
2509 | ||
2510 | /* Discard sections marked with SEC_EXCLUDE. */ | |
2511 | discard = (flags & SEC_EXCLUDE) != 0; | |
2512 | ||
2513 | /* Discard the group descriptor sections when we're finally placing the | |
2514 | sections from within the group. */ | |
2515 | if ((flags & SEC_GROUP) != 0 | |
2516 | && link_info.resolve_section_groups) | |
f38a2680 | 2517 | discard = true; |
5b5f4e6f AB |
2518 | |
2519 | /* Discard debugging sections if we are stripping debugging | |
2520 | information. */ | |
2521 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) | |
2522 | && (flags & SEC_DEBUGGING) != 0) | |
f38a2680 | 2523 | discard = true; |
5b5f4e6f AB |
2524 | |
2525 | return discard; | |
2526 | } | |
2527 | ||
252b5132 RH |
2528 | /* The wild routines. |
2529 | ||
2530 | These expand statements like *(.text) and foo.o to a list of | |
2531 | explicit actions, like foo.o(.text), bar.o(.text) and | |
2532 | foo.o(.text, .data). */ | |
2533 | ||
252b5132 | 2534 | /* Add SECTION to the output section OUTPUT. Do this by creating a |
b9c361e0 | 2535 | lang_input_section statement which is placed at PTR. */ |
252b5132 RH |
2536 | |
2537 | void | |
1579bae1 AM |
2538 | lang_add_section (lang_statement_list_type *ptr, |
2539 | asection *section, | |
b209b5a6 | 2540 | struct wildcard_list *pattern, |
b9c361e0 | 2541 | struct flag_info *sflag_info, |
7b986e99 | 2542 | lang_output_section_statement_type *output) |
252b5132 | 2543 | { |
164e712d | 2544 | flagword flags = section->flags; |
ae17ab41 | 2545 | |
f38a2680 | 2546 | bool discard; |
dfa7b0b8 | 2547 | lang_input_section_type *new_section; |
ae17ab41 | 2548 | bfd *abfd = link_info.output_bfd; |
252b5132 | 2549 | |
5b5f4e6f AB |
2550 | /* Is this section one we know should be discarded? */ |
2551 | discard = lang_discard_section_p (section); | |
252b5132 RH |
2552 | |
2553 | /* Discard input sections which are assigned to a section named | |
2554 | DISCARD_SECTION_NAME. */ | |
2555 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) | |
f38a2680 | 2556 | discard = true; |
252b5132 | 2557 | |
252b5132 RH |
2558 | if (discard) |
2559 | { | |
2560 | if (section->output_section == NULL) | |
2561 | { | |
2562 | /* This prevents future calls from assigning this section. */ | |
2563 | section->output_section = bfd_abs_section_ptr; | |
2564 | } | |
abf874aa CL |
2565 | else if (link_info.non_contiguous_regions_warnings) |
2566 | einfo (_("%P:%pS: warning: --enable-non-contiguous-regions makes " | |
2567 | "section `%pA' from '%pB' match /DISCARD/ clause.\n"), | |
2568 | NULL, section, section->owner); | |
2569 | ||
252b5132 RH |
2570 | return; |
2571 | } | |
2572 | ||
ae17ab41 CM |
2573 | if (sflag_info) |
2574 | { | |
f38a2680 | 2575 | bool keep; |
ae17ab41 | 2576 | |
b9c361e0 JL |
2577 | keep = bfd_lookup_section_flags (&link_info, sflag_info, section); |
2578 | if (!keep) | |
4724d37e | 2579 | return; |
ae17ab41 CM |
2580 | } |
2581 | ||
dfa7b0b8 | 2582 | if (section->output_section != NULL) |
abf874aa CL |
2583 | { |
2584 | if (!link_info.non_contiguous_regions) | |
2585 | return; | |
2586 | ||
2587 | /* SECTION has already been handled in a special way | |
2588 | (eg. LINK_ONCE): skip it. */ | |
2589 | if (bfd_is_abs_section (section->output_section)) | |
2590 | return; | |
2591 | ||
2592 | /* Already assigned to the same output section, do not process | |
2593 | it again, to avoid creating loops between duplicate sections | |
2594 | later. */ | |
2595 | if (section->output_section == output->bfd_section) | |
2596 | return; | |
2597 | ||
2598 | if (link_info.non_contiguous_regions_warnings && output->bfd_section) | |
2599 | einfo (_("%P:%pS: warning: --enable-non-contiguous-regions may " | |
2600 | "change behaviour for section `%pA' from '%pB' (assigned to " | |
2601 | "%pA, but additional match: %pA)\n"), | |
2602 | NULL, section, section->owner, section->output_section, | |
2603 | output->bfd_section); | |
2604 | ||
2605 | /* SECTION has already been assigned to an output section, but | |
2606 | the user allows it to be mapped to another one in case it | |
2607 | overflows. We'll later update the actual output section in | |
2608 | size_input_section as appropriate. */ | |
2609 | } | |
252b5132 | 2610 | |
dfa7b0b8 AM |
2611 | /* We don't copy the SEC_NEVER_LOAD flag from an input section |
2612 | to an output section, because we want to be able to include a | |
2613 | SEC_NEVER_LOAD section in the middle of an otherwise loaded | |
2614 | section (I don't know why we want to do this, but we do). | |
2615 | build_link_order in ldwrite.c handles this case by turning | |
2616 | the embedded SEC_NEVER_LOAD section into a fill. */ | |
2617 | flags &= ~ SEC_NEVER_LOAD; | |
8423293d | 2618 | |
dfa7b0b8 AM |
2619 | /* If final link, don't copy the SEC_LINK_ONCE flags, they've |
2620 | already been processed. One reason to do this is that on pe | |
2621 | format targets, .text$foo sections go into .text and it's odd | |
2622 | to see .text with SEC_LINK_ONCE set. */ | |
7bdf4127 AB |
2623 | if ((flags & (SEC_LINK_ONCE | SEC_GROUP)) == (SEC_LINK_ONCE | SEC_GROUP)) |
2624 | { | |
2625 | if (link_info.resolve_section_groups) | |
6c19b93b | 2626 | flags &= ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC); |
7bdf4127 | 2627 | else |
6c19b93b | 2628 | flags &= ~(SEC_LINK_DUPLICATES | SEC_RELOC); |
7bdf4127 AB |
2629 | } |
2630 | else if (!bfd_link_relocatable (&link_info)) | |
0814be7d | 2631 | flags &= ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC); |
252b5132 | 2632 | |
dfa7b0b8 AM |
2633 | switch (output->sectype) |
2634 | { | |
2635 | case normal_section: | |
2636 | case overlay_section: | |
7b243801 | 2637 | case first_overlay_section: |
dfa7b0b8 AM |
2638 | break; |
2639 | case noalloc_section: | |
2640 | flags &= ~SEC_ALLOC; | |
2641 | break; | |
2642 | case noload_section: | |
2643 | flags &= ~SEC_LOAD; | |
2644 | flags |= SEC_NEVER_LOAD; | |
f4eaaf7f AM |
2645 | /* Unfortunately GNU ld has managed to evolve two different |
2646 | meanings to NOLOAD in scripts. ELF gets a .bss style noload, | |
2647 | alloc, no contents section. All others get a noload, noalloc | |
2648 | section. */ | |
2649 | if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour) | |
2e76e85a | 2650 | flags &= ~SEC_HAS_CONTENTS; |
f4eaaf7f AM |
2651 | else |
2652 | flags &= ~SEC_ALLOC; | |
dfa7b0b8 AM |
2653 | break; |
2654 | } | |
252b5132 | 2655 | |
dfa7b0b8 AM |
2656 | if (output->bfd_section == NULL) |
2657 | init_os (output, flags); | |
252b5132 | 2658 | |
dfa7b0b8 AM |
2659 | /* If SEC_READONLY is not set in the input section, then clear |
2660 | it from the output section. */ | |
2661 | output->bfd_section->flags &= flags | ~SEC_READONLY; | |
252b5132 | 2662 | |
dfa7b0b8 AM |
2663 | if (output->bfd_section->linker_has_input) |
2664 | { | |
2665 | /* Only set SEC_READONLY flag on the first input section. */ | |
2666 | flags &= ~ SEC_READONLY; | |
252b5132 | 2667 | |
f5fa8ca2 | 2668 | /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */ |
dfa7b0b8 AM |
2669 | if ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS)) |
2670 | != (flags & (SEC_MERGE | SEC_STRINGS)) | |
2671 | || ((flags & SEC_MERGE) != 0 | |
2672 | && output->bfd_section->entsize != section->entsize)) | |
f5fa8ca2 | 2673 | { |
afd7a018 | 2674 | output->bfd_section->flags &= ~ (SEC_MERGE | SEC_STRINGS); |
f5fa8ca2 JJ |
2675 | flags &= ~ (SEC_MERGE | SEC_STRINGS); |
2676 | } | |
dfa7b0b8 AM |
2677 | } |
2678 | output->bfd_section->flags |= flags; | |
f5fa8ca2 | 2679 | |
dfa7b0b8 AM |
2680 | if (!output->bfd_section->linker_has_input) |
2681 | { | |
2682 | output->bfd_section->linker_has_input = 1; | |
2683 | /* This must happen after flags have been updated. The output | |
2684 | section may have been created before we saw its first input | |
2685 | section, eg. for a data statement. */ | |
2686 | bfd_init_private_section_data (section->owner, section, | |
2687 | link_info.output_bfd, | |
2688 | output->bfd_section, | |
2689 | &link_info); | |
2690 | if ((flags & SEC_MERGE) != 0) | |
afd7a018 | 2691 | output->bfd_section->entsize = section->entsize; |
dfa7b0b8 | 2692 | } |
f5fa8ca2 | 2693 | |
dfa7b0b8 AM |
2694 | if ((flags & SEC_TIC54X_BLOCK) != 0 |
2695 | && bfd_get_arch (section->owner) == bfd_arch_tic54x) | |
2696 | { | |
2697 | /* FIXME: This value should really be obtained from the bfd... */ | |
2698 | output->block_value = 128; | |
2699 | } | |
252b5132 | 2700 | |
dfa7b0b8 AM |
2701 | if (section->alignment_power > output->bfd_section->alignment_power) |
2702 | output->bfd_section->alignment_power = section->alignment_power; | |
9e41f973 | 2703 | |
dfa7b0b8 | 2704 | section->output_section = output->bfd_section; |
252b5132 | 2705 | |
5b69e357 | 2706 | if (!map_head_is_link_order) |
dfa7b0b8 AM |
2707 | { |
2708 | asection *s = output->bfd_section->map_tail.s; | |
2709 | output->bfd_section->map_tail.s = section; | |
2710 | section->map_head.s = NULL; | |
2711 | section->map_tail.s = s; | |
2712 | if (s != NULL) | |
2713 | s->map_head.s = section; | |
2714 | else | |
2715 | output->bfd_section->map_head.s = section; | |
252b5132 | 2716 | } |
dfa7b0b8 AM |
2717 | |
2718 | /* Add a section reference to the list. */ | |
2719 | new_section = new_stat (lang_input_section, ptr); | |
2720 | new_section->section = section; | |
b209b5a6 | 2721 | new_section->pattern = pattern; |
252b5132 RH |
2722 | } |
2723 | ||
2724 | /* Handle wildcard sorting. This returns the lang_input_section which | |
2725 | should follow the one we are going to create for SECTION and FILE, | |
2726 | based on the sorting requirements of WILD. It returns NULL if the | |
2727 | new section should just go at the end of the current list. */ | |
2728 | ||
2729 | static lang_statement_union_type * | |
1579bae1 AM |
2730 | wild_sort (lang_wild_statement_type *wild, |
2731 | struct wildcard_list *sec, | |
2732 | lang_input_statement_type *file, | |
2733 | asection *section) | |
252b5132 | 2734 | { |
252b5132 RH |
2735 | lang_statement_union_type *l; |
2736 | ||
bcaa7b3e L |
2737 | if (!wild->filenames_sorted |
2738 | && (sec == NULL || sec->spec.sorted == none)) | |
252b5132 RH |
2739 | return NULL; |
2740 | ||
bba1a0c0 | 2741 | for (l = wild->children.head; l != NULL; l = l->header.next) |
252b5132 RH |
2742 | { |
2743 | lang_input_section_type *ls; | |
2744 | ||
2745 | if (l->header.type != lang_input_section_enum) | |
2746 | continue; | |
2747 | ls = &l->input_section; | |
2748 | ||
2749 | /* Sorting by filename takes precedence over sorting by section | |
afd7a018 | 2750 | name. */ |
252b5132 RH |
2751 | |
2752 | if (wild->filenames_sorted) | |
2753 | { | |
2754 | const char *fn, *ln; | |
f38a2680 | 2755 | bool fa, la; |
252b5132 RH |
2756 | int i; |
2757 | ||
2758 | /* The PE support for the .idata section as generated by | |
afd7a018 AM |
2759 | dlltool assumes that files will be sorted by the name of |
2760 | the archive and then the name of the file within the | |
2761 | archive. */ | |
252b5132 RH |
2762 | |
2763 | if (file->the_bfd != NULL | |
3860d2b4 | 2764 | && file->the_bfd->my_archive != NULL) |
252b5132 | 2765 | { |
3860d2b4 | 2766 | fn = bfd_get_filename (file->the_bfd->my_archive); |
f38a2680 | 2767 | fa = true; |
252b5132 RH |
2768 | } |
2769 | else | |
2770 | { | |
2771 | fn = file->filename; | |
f38a2680 | 2772 | fa = false; |
252b5132 RH |
2773 | } |
2774 | ||
3860d2b4 | 2775 | if (ls->section->owner->my_archive != NULL) |
252b5132 | 2776 | { |
3860d2b4 | 2777 | ln = bfd_get_filename (ls->section->owner->my_archive); |
f38a2680 | 2778 | la = true; |
252b5132 RH |
2779 | } |
2780 | else | |
2781 | { | |
607b4833 | 2782 | ln = bfd_get_filename (ls->section->owner); |
f38a2680 | 2783 | la = false; |
252b5132 RH |
2784 | } |
2785 | ||
42627821 | 2786 | i = filename_cmp (fn, ln); |
252b5132 RH |
2787 | if (i > 0) |
2788 | continue; | |
2789 | else if (i < 0) | |
2790 | break; | |
2791 | ||
2792 | if (fa || la) | |
2793 | { | |
2794 | if (fa) | |
2795 | fn = file->filename; | |
2796 | if (la) | |
607b4833 | 2797 | ln = bfd_get_filename (ls->section->owner); |
252b5132 | 2798 | |
42627821 | 2799 | i = filename_cmp (fn, ln); |
252b5132 RH |
2800 | if (i > 0) |
2801 | continue; | |
2802 | else if (i < 0) | |
2803 | break; | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | /* Here either the files are not sorted by name, or we are | |
afd7a018 | 2808 | looking at the sections for this file. */ |
252b5132 | 2809 | |
b2e4da5a L |
2810 | if (sec != NULL |
2811 | && sec->spec.sorted != none | |
2812 | && sec->spec.sorted != by_none) | |
32124d5b AM |
2813 | if (compare_section (sec->spec.sorted, section, ls->section) < 0) |
2814 | break; | |
252b5132 RH |
2815 | } |
2816 | ||
2817 | return l; | |
2818 | } | |
2819 | ||
2820 | /* Expand a wild statement for a particular FILE. SECTION may be | |
2821 | NULL, in which case it is a wild card. */ | |
2822 | ||
2823 | static void | |
1579bae1 AM |
2824 | output_section_callback (lang_wild_statement_type *ptr, |
2825 | struct wildcard_list *sec, | |
2826 | asection *section, | |
2827 | lang_input_statement_type *file, | |
2828 | void *output) | |
4dec4d4e RH |
2829 | { |
2830 | lang_statement_union_type *before; | |
d0bf826b AM |
2831 | lang_output_section_statement_type *os; |
2832 | ||
2833 | os = (lang_output_section_statement_type *) output; | |
5f992e62 | 2834 | |
b6bf44ba | 2835 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
d0bf826b | 2836 | if (unique_section_p (section, os)) |
b6bf44ba AM |
2837 | return; |
2838 | ||
b6bf44ba | 2839 | before = wild_sort (ptr, sec, file, section); |
5f992e62 | 2840 | |
4dec4d4e RH |
2841 | /* Here BEFORE points to the lang_input_section which |
2842 | should follow the one we are about to add. If BEFORE | |
2843 | is NULL, then the section should just go at the end | |
2844 | of the current list. */ | |
5f992e62 | 2845 | |
4dec4d4e | 2846 | if (before == NULL) |
b209b5a6 AM |
2847 | lang_add_section (&ptr->children, section, ptr->section_list, |
2848 | ptr->section_flag_list, os); | |
4dec4d4e | 2849 | else |
252b5132 | 2850 | { |
4dec4d4e RH |
2851 | lang_statement_list_type list; |
2852 | lang_statement_union_type **pp; | |
5f992e62 | 2853 | |
4dec4d4e | 2854 | lang_list_init (&list); |
b209b5a6 AM |
2855 | lang_add_section (&list, section, ptr->section_list, |
2856 | ptr->section_flag_list, os); | |
5f992e62 | 2857 | |
4dec4d4e RH |
2858 | /* If we are discarding the section, LIST.HEAD will |
2859 | be NULL. */ | |
2860 | if (list.head != NULL) | |
252b5132 | 2861 | { |
bba1a0c0 | 2862 | ASSERT (list.head->header.next == NULL); |
5f992e62 | 2863 | |
4dec4d4e RH |
2864 | for (pp = &ptr->children.head; |
2865 | *pp != before; | |
bba1a0c0 | 2866 | pp = &(*pp)->header.next) |
4dec4d4e | 2867 | ASSERT (*pp != NULL); |
5f992e62 | 2868 | |
bba1a0c0 | 2869 | list.head->header.next = *pp; |
4dec4d4e | 2870 | *pp = list.head; |
252b5132 RH |
2871 | } |
2872 | } | |
2873 | } | |
2874 | ||
0841712e JJ |
2875 | /* Check if all sections in a wild statement for a particular FILE |
2876 | are readonly. */ | |
2877 | ||
2878 | static void | |
2879 | check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED, | |
2880 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
2881 | asection *section, | |
2882 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
d0bf826b | 2883 | void *output) |
0841712e | 2884 | { |
d0bf826b AM |
2885 | lang_output_section_statement_type *os; |
2886 | ||
2887 | os = (lang_output_section_statement_type *) output; | |
2888 | ||
0841712e | 2889 | /* Exclude sections that match UNIQUE_SECTION_LIST. */ |
d0bf826b | 2890 | if (unique_section_p (section, os)) |
0841712e JJ |
2891 | return; |
2892 | ||
6feb9908 | 2893 | if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0) |
f38a2680 | 2894 | os->all_input_readonly = false; |
0841712e JJ |
2895 | } |
2896 | ||
252b5132 RH |
2897 | /* This is passed a file name which must have been seen already and |
2898 | added to the statement tree. We will see if it has been opened | |
2899 | already and had its symbols read. If not then we'll read it. */ | |
2900 | ||
2901 | static lang_input_statement_type * | |
1579bae1 | 2902 | lookup_name (const char *name) |
252b5132 RH |
2903 | { |
2904 | lang_input_statement_type *search; | |
2905 | ||
8ce18f9c | 2906 | for (search = (void *) input_file_chain.head; |
1579bae1 | 2907 | search != NULL; |
36983a93 | 2908 | search = search->next_real_file) |
252b5132 | 2909 | { |
0013291d NC |
2910 | /* Use the local_sym_name as the name of the file that has |
2911 | already been loaded as filename might have been transformed | |
2912 | via the search directory lookup mechanism. */ | |
87aa7f19 | 2913 | const char *filename = search->local_sym_name; |
0013291d | 2914 | |
0013291d | 2915 | if (filename != NULL |
42627821 | 2916 | && filename_cmp (filename, name) == 0) |
252b5132 RH |
2917 | break; |
2918 | } | |
2919 | ||
1579bae1 | 2920 | if (search == NULL) |
1f1f5b92 AM |
2921 | { |
2922 | /* Arrange to splice the input statement added by new_afile into | |
2923 | statement_list after the current input_file_chain tail. | |
2924 | We know input_file_chain is not an empty list, and that | |
2925 | lookup_name was called via open_input_bfds. Later calls to | |
2926 | lookup_name should always match an existing input_statement. */ | |
2927 | lang_statement_union_type **tail = stat_ptr->tail; | |
2928 | lang_statement_union_type **after | |
2929 | = (void *) ((char *) input_file_chain.tail | |
2930 | - offsetof (lang_input_statement_type, next_real_file) | |
2931 | + offsetof (lang_input_statement_type, header.next)); | |
2932 | lang_statement_union_type *rest = *after; | |
2933 | stat_ptr->tail = after; | |
2934 | search = new_afile (name, lang_input_file_is_search_file_enum, | |
16171946 | 2935 | default_target, NULL); |
1f1f5b92 AM |
2936 | *stat_ptr->tail = rest; |
2937 | if (*tail == NULL) | |
2938 | stat_ptr->tail = tail; | |
2939 | } | |
252b5132 RH |
2940 | |
2941 | /* If we have already added this file, or this file is not real | |
87aa7f19 | 2942 | don't add this file. */ |
66be1055 | 2943 | if (search->flags.loaded || !search->flags.real) |
252b5132 RH |
2944 | return search; |
2945 | ||
0aa7f586 | 2946 | if (!load_symbols (search, NULL)) |
6770ec8c | 2947 | return NULL; |
252b5132 RH |
2948 | |
2949 | return search; | |
2950 | } | |
2951 | ||
b58f81ae DJ |
2952 | /* Save LIST as a list of libraries whose symbols should not be exported. */ |
2953 | ||
2954 | struct excluded_lib | |
2955 | { | |
2956 | char *name; | |
2957 | struct excluded_lib *next; | |
2958 | }; | |
2959 | static struct excluded_lib *excluded_libs; | |
2960 | ||
2961 | void | |
2962 | add_excluded_libs (const char *list) | |
2963 | { | |
2964 | const char *p = list, *end; | |
2965 | ||
2966 | while (*p != '\0') | |
2967 | { | |
2968 | struct excluded_lib *entry; | |
2969 | end = strpbrk (p, ",:"); | |
2970 | if (end == NULL) | |
2971 | end = p + strlen (p); | |
1e9cc1c2 | 2972 | entry = (struct excluded_lib *) xmalloc (sizeof (*entry)); |
b58f81ae | 2973 | entry->next = excluded_libs; |
1e9cc1c2 | 2974 | entry->name = (char *) xmalloc (end - p + 1); |
b58f81ae DJ |
2975 | memcpy (entry->name, p, end - p); |
2976 | entry->name[end - p] = '\0'; | |
2977 | excluded_libs = entry; | |
2978 | if (*end == '\0') | |
329c1c86 | 2979 | break; |
b58f81ae DJ |
2980 | p = end + 1; |
2981 | } | |
2982 | } | |
2983 | ||
2984 | static void | |
2985 | check_excluded_libs (bfd *abfd) | |
2986 | { | |
2987 | struct excluded_lib *lib = excluded_libs; | |
2988 | ||
2989 | while (lib) | |
2990 | { | |
2991 | int len = strlen (lib->name); | |
607b4833 | 2992 | const char *filename = lbasename (bfd_get_filename (abfd)); |
b58f81ae DJ |
2993 | |
2994 | if (strcmp (lib->name, "ALL") == 0) | |
2995 | { | |
f38a2680 | 2996 | abfd->no_export = true; |
b58f81ae DJ |
2997 | return; |
2998 | } | |
2999 | ||
42627821 | 3000 | if (filename_ncmp (lib->name, filename, len) == 0 |
b58f81ae DJ |
3001 | && (filename[len] == '\0' |
3002 | || (filename[len] == '.' && filename[len + 1] == 'a' | |
3003 | && filename[len + 2] == '\0'))) | |
3004 | { | |
f38a2680 | 3005 | abfd->no_export = true; |
b58f81ae DJ |
3006 | return; |
3007 | } | |
3008 | ||
3009 | lib = lib->next; | |
3010 | } | |
3011 | } | |
3012 | ||
252b5132 RH |
3013 | /* Get the symbols for an input file. */ |
3014 | ||
f38a2680 | 3015 | bool |
1579bae1 AM |
3016 | load_symbols (lang_input_statement_type *entry, |
3017 | lang_statement_list_type *place) | |
252b5132 RH |
3018 | { |
3019 | char **matching; | |
3020 | ||
66be1055 | 3021 | if (entry->flags.loaded) |
f38a2680 | 3022 | return true; |
252b5132 RH |
3023 | |
3024 | ldfile_open_file (entry); | |
3025 | ||
c4b78195 | 3026 | /* Do not process further if the file was missing. */ |
66be1055 | 3027 | if (entry->flags.missing_file) |
f38a2680 | 3028 | return true; |
c4b78195 | 3029 | |
727a29ba AM |
3030 | if (trace_files || verbose) |
3031 | info_msg ("%pI\n", entry); | |
3032 | ||
0aa7f586 AM |
3033 | if (!bfd_check_format (entry->the_bfd, bfd_archive) |
3034 | && !bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) | |
252b5132 RH |
3035 | { |
3036 | bfd_error_type err; | |
66be1055 | 3037 | struct lang_input_statement_flags save_flags; |
47e2e729 | 3038 | extern FILE *yyin; |
b7a26f91 | 3039 | |
252b5132 | 3040 | err = bfd_get_error (); |
884fb58e NC |
3041 | |
3042 | /* See if the emulation has some special knowledge. */ | |
3043 | if (ldemul_unrecognized_file (entry)) | |
f38a2680 | 3044 | return true; |
884fb58e | 3045 | |
252b5132 RH |
3046 | if (err == bfd_error_file_ambiguously_recognized) |
3047 | { | |
3048 | char **p; | |
3049 | ||
df5f2391 AM |
3050 | einfo (_("%P: %pB: file not recognized: %E;" |
3051 | " matching formats:"), entry->the_bfd); | |
252b5132 RH |
3052 | for (p = matching; *p != NULL; p++) |
3053 | einfo (" %s", *p); | |
3054 | einfo ("%F\n"); | |
3055 | } | |
3056 | else if (err != bfd_error_file_not_recognized | |
3057 | || place == NULL) | |
df5f2391 | 3058 | einfo (_("%F%P: %pB: file not recognized: %E\n"), entry->the_bfd); |
b7a26f91 | 3059 | |
252b5132 RH |
3060 | bfd_close (entry->the_bfd); |
3061 | entry->the_bfd = NULL; | |
3062 | ||
252b5132 | 3063 | /* Try to interpret the file as a linker script. */ |
66be1055 | 3064 | save_flags = input_flags; |
252b5132 RH |
3065 | ldfile_open_command_file (entry->filename); |
3066 | ||
bde18da4 | 3067 | push_stat_ptr (place); |
66be1055 AM |
3068 | input_flags.add_DT_NEEDED_for_regular |
3069 | = entry->flags.add_DT_NEEDED_for_regular; | |
3070 | input_flags.add_DT_NEEDED_for_dynamic | |
3071 | = entry->flags.add_DT_NEEDED_for_dynamic; | |
3072 | input_flags.whole_archive = entry->flags.whole_archive; | |
3073 | input_flags.dynamic = entry->flags.dynamic; | |
252b5132 | 3074 | |
f38a2680 | 3075 | ldfile_assumed_script = true; |
252b5132 | 3076 | parser_input = input_script; |
16171946 | 3077 | current_input_file = entry->filename; |
252b5132 | 3078 | yyparse (); |
16171946 | 3079 | current_input_file = NULL; |
f38a2680 | 3080 | ldfile_assumed_script = false; |
252b5132 | 3081 | |
f4a23d42 AM |
3082 | /* missing_file is sticky. sysrooted will already have been |
3083 | restored when seeing EOF in yyparse, but no harm to restore | |
3084 | again. */ | |
66be1055 AM |
3085 | save_flags.missing_file |= input_flags.missing_file; |
3086 | input_flags = save_flags; | |
bde18da4 | 3087 | pop_stat_ptr (); |
47e2e729 AM |
3088 | fclose (yyin); |
3089 | yyin = NULL; | |
f38a2680 | 3090 | entry->flags.loaded = true; |
252b5132 | 3091 | |
f38a2680 | 3092 | return true; |
252b5132 RH |
3093 | } |
3094 | ||
3095 | if (ldemul_recognized_file (entry)) | |
f38a2680 | 3096 | return true; |
252b5132 RH |
3097 | |
3098 | /* We don't call ldlang_add_file for an archive. Instead, the | |
3099 | add_symbols entry point will call ldlang_add_file, via the | |
3100 | add_archive_element callback, for each element of the archive | |
3101 | which is used. */ | |
3102 | switch (bfd_get_format (entry->the_bfd)) | |
3103 | { | |
3104 | default: | |
3105 | break; | |
3106 | ||
3107 | case bfd_object: | |
66be1055 | 3108 | if (!entry->flags.reload) |
15fc2e13 | 3109 | ldlang_add_file (entry); |
252b5132 RH |
3110 | break; |
3111 | ||
3112 | case bfd_archive: | |
b58f81ae DJ |
3113 | check_excluded_libs (entry->the_bfd); |
3114 | ||
00f93c44 | 3115 | bfd_set_usrdata (entry->the_bfd, entry); |
66be1055 | 3116 | if (entry->flags.whole_archive) |
252b5132 | 3117 | { |
b7a26f91 | 3118 | bfd *member = NULL; |
f38a2680 | 3119 | bool loaded = true; |
6770ec8c NC |
3120 | |
3121 | for (;;) | |
252b5132 | 3122 | { |
5d3236ee | 3123 | bfd *subsbfd; |
6770ec8c NC |
3124 | member = bfd_openr_next_archived_file (entry->the_bfd, member); |
3125 | ||
3126 | if (member == NULL) | |
3127 | break; | |
b7a26f91 | 3128 | |
0aa7f586 | 3129 | if (!bfd_check_format (member, bfd_object)) |
6770ec8c | 3130 | { |
df5f2391 | 3131 | einfo (_("%F%P: %pB: member %pB in archive is not an object\n"), |
6770ec8c | 3132 | entry->the_bfd, member); |
f38a2680 | 3133 | loaded = false; |
6770ec8c NC |
3134 | } |
3135 | ||
db0ca79f | 3136 | subsbfd = member; |
46105645 AM |
3137 | if (!(*link_info.callbacks |
3138 | ->add_archive_element) (&link_info, member, | |
3139 | "--whole-archive", &subsbfd)) | |
252b5132 | 3140 | abort (); |
6770ec8c | 3141 | |
5d3236ee DK |
3142 | /* Potentially, the add_archive_element hook may have set a |
3143 | substitute BFD for us. */ | |
46105645 | 3144 | if (!bfd_link_add_symbols (subsbfd, &link_info)) |
6770ec8c | 3145 | { |
df5f2391 | 3146 | einfo (_("%F%P: %pB: error adding symbols: %E\n"), member); |
f38a2680 | 3147 | loaded = false; |
6770ec8c | 3148 | } |
252b5132 RH |
3149 | } |
3150 | ||
66be1055 | 3151 | entry->flags.loaded = loaded; |
6770ec8c | 3152 | return loaded; |
252b5132 | 3153 | } |
6770ec8c | 3154 | break; |
252b5132 RH |
3155 | } |
3156 | ||
03bdc404 | 3157 | if (bfd_link_add_symbols (entry->the_bfd, &link_info)) |
f38a2680 | 3158 | entry->flags.loaded = true; |
6770ec8c | 3159 | else |
df5f2391 | 3160 | einfo (_("%F%P: %pB: error adding symbols: %E\n"), entry->the_bfd); |
252b5132 | 3161 | |
66be1055 | 3162 | return entry->flags.loaded; |
252b5132 RH |
3163 | } |
3164 | ||
b6bf44ba AM |
3165 | /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both |
3166 | may be NULL, indicating that it is a wildcard. Separate | |
3167 | lang_input_section statements are created for each part of the | |
3168 | expansion; they are added after the wild statement S. OUTPUT is | |
3169 | the output section. */ | |
252b5132 RH |
3170 | |
3171 | static void | |
1579bae1 AM |
3172 | wild (lang_wild_statement_type *s, |
3173 | const char *target ATTRIBUTE_UNUSED, | |
3174 | lang_output_section_statement_type *output) | |
252b5132 | 3175 | { |
b6bf44ba | 3176 | struct wildcard_list *sec; |
252b5132 | 3177 | |
50c77e5d | 3178 | if (s->handler_data[0] |
329c1c86 | 3179 | && s->handler_data[0]->spec.sorted == by_name |
50c77e5d NC |
3180 | && !s->filenames_sorted) |
3181 | { | |
329c1c86 AM |
3182 | lang_section_bst_type *tree; |
3183 | ||
50c77e5d NC |
3184 | walk_wild (s, output_section_callback_fast, output); |
3185 | ||
e6f2cbf5 | 3186 | tree = s->tree; |
329c1c86 | 3187 | if (tree) |
e6f2cbf5 L |
3188 | { |
3189 | output_section_callback_tree_to_list (s, tree, output); | |
3190 | s->tree = NULL; | |
3191 | } | |
50c77e5d | 3192 | } |
329c1c86 | 3193 | else |
50c77e5d | 3194 | walk_wild (s, output_section_callback, output); |
b6bf44ba | 3195 | |
abe6ac95 AM |
3196 | if (default_common_section == NULL) |
3197 | for (sec = s->section_list; sec != NULL; sec = sec->next) | |
b6bf44ba AM |
3198 | if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0) |
3199 | { | |
3200 | /* Remember the section that common is going to in case we | |
b7a26f91 | 3201 | later get something which doesn't know where to put it. */ |
b6bf44ba | 3202 | default_common_section = output; |
abe6ac95 | 3203 | break; |
b6bf44ba | 3204 | } |
252b5132 RH |
3205 | } |
3206 | ||
b34976b6 | 3207 | /* Return TRUE iff target is the sought target. */ |
08da4cac | 3208 | |
e50d8076 | 3209 | static int |
1579bae1 | 3210 | get_target (const bfd_target *target, void *data) |
e50d8076 | 3211 | { |
1e9cc1c2 | 3212 | const char *sought = (const char *) data; |
5f992e62 | 3213 | |
e50d8076 NC |
3214 | return strcmp (target->name, sought) == 0; |
3215 | } | |
3216 | ||
3217 | /* Like strcpy() but convert to lower case as well. */ | |
08da4cac | 3218 | |
e50d8076 | 3219 | static void |
1d38e9d1 | 3220 | stricpy (char *dest, const char *src) |
e50d8076 NC |
3221 | { |
3222 | char c; | |
5f992e62 | 3223 | |
08da4cac | 3224 | while ((c = *src++) != 0) |
3882b010 | 3225 | *dest++ = TOLOWER (c); |
e50d8076 | 3226 | |
08da4cac | 3227 | *dest = 0; |
e50d8076 NC |
3228 | } |
3229 | ||
396a2467 | 3230 | /* Remove the first occurrence of needle (if any) in haystack |
e50d8076 | 3231 | from haystack. */ |
08da4cac | 3232 | |
e50d8076 | 3233 | static void |
1d38e9d1 | 3234 | strcut (char *haystack, const char *needle) |
e50d8076 NC |
3235 | { |
3236 | haystack = strstr (haystack, needle); | |
5f992e62 | 3237 | |
e50d8076 NC |
3238 | if (haystack) |
3239 | { | |
08da4cac | 3240 | char *src; |
e50d8076 | 3241 | |
08da4cac KH |
3242 | for (src = haystack + strlen (needle); *src;) |
3243 | *haystack++ = *src++; | |
5f992e62 | 3244 | |
08da4cac | 3245 | *haystack = 0; |
e50d8076 NC |
3246 | } |
3247 | } | |
3248 | ||
3249 | /* Compare two target format name strings. | |
3250 | Return a value indicating how "similar" they are. */ | |
08da4cac | 3251 | |
e50d8076 | 3252 | static int |
1d38e9d1 | 3253 | name_compare (const char *first, const char *second) |
e50d8076 | 3254 | { |
08da4cac KH |
3255 | char *copy1; |
3256 | char *copy2; | |
3257 | int result; | |
5f992e62 | 3258 | |
1e9cc1c2 NC |
3259 | copy1 = (char *) xmalloc (strlen (first) + 1); |
3260 | copy2 = (char *) xmalloc (strlen (second) + 1); | |
e50d8076 NC |
3261 | |
3262 | /* Convert the names to lower case. */ | |
3263 | stricpy (copy1, first); | |
3264 | stricpy (copy2, second); | |
3265 | ||
1579bae1 | 3266 | /* Remove size and endian strings from the name. */ |
e50d8076 NC |
3267 | strcut (copy1, "big"); |
3268 | strcut (copy1, "little"); | |
3269 | strcut (copy2, "big"); | |
3270 | strcut (copy2, "little"); | |
3271 | ||
3272 | /* Return a value based on how many characters match, | |
3273 | starting from the beginning. If both strings are | |
3274 | the same then return 10 * their length. */ | |
08da4cac KH |
3275 | for (result = 0; copy1[result] == copy2[result]; result++) |
3276 | if (copy1[result] == 0) | |
e50d8076 NC |
3277 | { |
3278 | result *= 10; | |
3279 | break; | |
3280 | } | |
5f992e62 | 3281 | |
e50d8076 NC |
3282 | free (copy1); |
3283 | free (copy2); | |
3284 | ||
3285 | return result; | |
3286 | } | |
3287 | ||
3288 | /* Set by closest_target_match() below. */ | |
08da4cac | 3289 | static const bfd_target *winner; |
e50d8076 NC |
3290 | |
3291 | /* Scan all the valid bfd targets looking for one that has the endianness | |
3292 | requirement that was specified on the command line, and is the nearest | |
3293 | match to the original output target. */ | |
08da4cac | 3294 | |
e50d8076 | 3295 | static int |
1579bae1 | 3296 | closest_target_match (const bfd_target *target, void *data) |
e50d8076 | 3297 | { |
1e9cc1c2 | 3298 | const bfd_target *original = (const bfd_target *) data; |
5f992e62 | 3299 | |
08da4cac KH |
3300 | if (command_line.endian == ENDIAN_BIG |
3301 | && target->byteorder != BFD_ENDIAN_BIG) | |
e50d8076 | 3302 | return 0; |
5f992e62 | 3303 | |
08da4cac KH |
3304 | if (command_line.endian == ENDIAN_LITTLE |
3305 | && target->byteorder != BFD_ENDIAN_LITTLE) | |
e50d8076 NC |
3306 | return 0; |
3307 | ||
3308 | /* Must be the same flavour. */ | |
3309 | if (target->flavour != original->flavour) | |
3310 | return 0; | |
3311 | ||
de7dd2bd | 3312 | /* Ignore generic big and little endian elf vectors. */ |
967928e9 | 3313 | if (strcmp (target->name, "elf32-big") == 0 |
de7dd2bd NC |
3314 | || strcmp (target->name, "elf64-big") == 0 |
3315 | || strcmp (target->name, "elf32-little") == 0 | |
3316 | || strcmp (target->name, "elf64-little") == 0) | |
3317 | return 0; | |
3318 | ||
e50d8076 NC |
3319 | /* If we have not found a potential winner yet, then record this one. */ |
3320 | if (winner == NULL) | |
3321 | { | |
3322 | winner = target; | |
3323 | return 0; | |
3324 | } | |
3325 | ||
3326 | /* Oh dear, we now have two potential candidates for a successful match. | |
4de2d33d | 3327 | Compare their names and choose the better one. */ |
d1778b88 AM |
3328 | if (name_compare (target->name, original->name) |
3329 | > name_compare (winner->name, original->name)) | |
e50d8076 NC |
3330 | winner = target; |
3331 | ||
3332 | /* Keep on searching until wqe have checked them all. */ | |
3333 | return 0; | |
3334 | } | |
3335 | ||
3336 | /* Return the BFD target format of the first input file. */ | |
08da4cac | 3337 | |
1d38e9d1 | 3338 | static const char * |
1579bae1 | 3339 | get_first_input_target (void) |
e50d8076 | 3340 | { |
1d38e9d1 | 3341 | const char *target = NULL; |
e50d8076 NC |
3342 | |
3343 | LANG_FOR_EACH_INPUT_STATEMENT (s) | |
3344 | { | |
3345 | if (s->header.type == lang_input_statement_enum | |
66be1055 | 3346 | && s->flags.real) |
e50d8076 NC |
3347 | { |
3348 | ldfile_open_file (s); | |
5f992e62 | 3349 | |
e50d8076 NC |
3350 | if (s->the_bfd != NULL |
3351 | && bfd_check_format (s->the_bfd, bfd_object)) | |
3352 | { | |
3353 | target = bfd_get_target (s->the_bfd); | |
5f992e62 | 3354 | |
e50d8076 NC |
3355 | if (target != NULL) |
3356 | break; | |
3357 | } | |
3358 | } | |
3359 | } | |
5f992e62 | 3360 | |
e50d8076 NC |
3361 | return target; |
3362 | } | |
3363 | ||
599917b8 | 3364 | const char * |
1579bae1 | 3365 | lang_get_output_target (void) |
599917b8 JJ |
3366 | { |
3367 | const char *target; | |
3368 | ||
3369 | /* Has the user told us which output format to use? */ | |
1579bae1 | 3370 | if (output_target != NULL) |
599917b8 JJ |
3371 | return output_target; |
3372 | ||
3373 | /* No - has the current target been set to something other than | |
3374 | the default? */ | |
30824704 | 3375 | if (current_target != default_target && current_target != NULL) |
599917b8 JJ |
3376 | return current_target; |
3377 | ||
3378 | /* No - can we determine the format of the first input file? */ | |
3379 | target = get_first_input_target (); | |
3380 | if (target != NULL) | |
3381 | return target; | |
3382 | ||
3383 | /* Failed - use the default output target. */ | |
3384 | return default_target; | |
3385 | } | |
3386 | ||
252b5132 RH |
3387 | /* Open the output file. */ |
3388 | ||
f13a99db | 3389 | static void |
1579bae1 | 3390 | open_output (const char *name) |
252b5132 | 3391 | { |
599917b8 | 3392 | output_target = lang_get_output_target (); |
5f992e62 | 3393 | |
08da4cac KH |
3394 | /* Has the user requested a particular endianness on the command |
3395 | line? */ | |
e50d8076 NC |
3396 | if (command_line.endian != ENDIAN_UNSET) |
3397 | { | |
e50d8076 | 3398 | /* Get the chosen target. */ |
4212b42d AM |
3399 | const bfd_target *target |
3400 | = bfd_iterate_over_targets (get_target, (void *) output_target); | |
e50d8076 | 3401 | |
c13b1b77 NC |
3402 | /* If the target is not supported, we cannot do anything. */ |
3403 | if (target != NULL) | |
e50d8076 | 3404 | { |
4212b42d AM |
3405 | enum bfd_endian desired_endian; |
3406 | ||
c13b1b77 NC |
3407 | if (command_line.endian == ENDIAN_BIG) |
3408 | desired_endian = BFD_ENDIAN_BIG; | |
e50d8076 | 3409 | else |
c13b1b77 | 3410 | desired_endian = BFD_ENDIAN_LITTLE; |
5f992e62 AM |
3411 | |
3412 | /* See if the target has the wrong endianness. This should | |
3413 | not happen if the linker script has provided big and | |
3414 | little endian alternatives, but some scrips don't do | |
3415 | this. */ | |
c13b1b77 | 3416 | if (target->byteorder != desired_endian) |
e50d8076 | 3417 | { |
c13b1b77 NC |
3418 | /* If it does, then see if the target provides |
3419 | an alternative with the correct endianness. */ | |
3420 | if (target->alternative_target != NULL | |
3421 | && (target->alternative_target->byteorder == desired_endian)) | |
3422 | output_target = target->alternative_target->name; | |
e50d8076 | 3423 | else |
c13b1b77 | 3424 | { |
5f992e62 AM |
3425 | /* Try to find a target as similar as possible to |
3426 | the default target, but which has the desired | |
3427 | endian characteristic. */ | |
4212b42d AM |
3428 | bfd_iterate_over_targets (closest_target_match, |
3429 | (void *) target); | |
5f992e62 AM |
3430 | |
3431 | /* Oh dear - we could not find any targets that | |
3432 | satisfy our requirements. */ | |
c13b1b77 | 3433 | if (winner == NULL) |
6feb9908 AM |
3434 | einfo (_("%P: warning: could not find any targets" |
3435 | " that match endianness requirement\n")); | |
c13b1b77 NC |
3436 | else |
3437 | output_target = winner->name; | |
3438 | } | |
e50d8076 NC |
3439 | } |
3440 | } | |
252b5132 | 3441 | } |
5f992e62 | 3442 | |
f13a99db | 3443 | link_info.output_bfd = bfd_openw (name, output_target); |
252b5132 | 3444 | |
f13a99db | 3445 | if (link_info.output_bfd == NULL) |
252b5132 RH |
3446 | { |
3447 | if (bfd_get_error () == bfd_error_invalid_target) | |
df5f2391 | 3448 | einfo (_("%F%P: target %s not found\n"), output_target); |
e50d8076 | 3449 | |
df5f2391 | 3450 | einfo (_("%F%P: cannot open output file %s: %E\n"), name); |
252b5132 RH |
3451 | } |
3452 | ||
f38a2680 | 3453 | delete_output_file_on_failure = true; |
252b5132 | 3454 | |
0aa7f586 | 3455 | if (!bfd_set_format (link_info.output_bfd, bfd_object)) |
df5f2391 | 3456 | einfo (_("%F%P: %s: can not make object file: %E\n"), name); |
0aa7f586 | 3457 | if (!bfd_set_arch_mach (link_info.output_bfd, |
252b5132 RH |
3458 | ldfile_output_architecture, |
3459 | ldfile_output_machine)) | |
df5f2391 | 3460 | einfo (_("%F%P: %s: can not set architecture: %E\n"), name); |
252b5132 | 3461 | |
f13a99db | 3462 | link_info.hash = bfd_link_hash_table_create (link_info.output_bfd); |
1579bae1 | 3463 | if (link_info.hash == NULL) |
df5f2391 | 3464 | einfo (_("%F%P: can not create hash table: %E\n")); |
252b5132 | 3465 | |
f13a99db | 3466 | bfd_set_gp_size (link_info.output_bfd, g_switch_value); |
252b5132 RH |
3467 | } |
3468 | ||
252b5132 | 3469 | static void |
1579bae1 | 3470 | ldlang_open_output (lang_statement_union_type *statement) |
252b5132 RH |
3471 | { |
3472 | switch (statement->header.type) | |
3473 | { | |
3474 | case lang_output_statement_enum: | |
f13a99db AM |
3475 | ASSERT (link_info.output_bfd == NULL); |
3476 | open_output (statement->output_statement.name); | |
252b5132 | 3477 | ldemul_set_output_arch (); |
0e1862bb L |
3478 | if (config.magic_demand_paged |
3479 | && !bfd_link_relocatable (&link_info)) | |
f13a99db | 3480 | link_info.output_bfd->flags |= D_PAGED; |
252b5132 | 3481 | else |
f13a99db | 3482 | link_info.output_bfd->flags &= ~D_PAGED; |
252b5132 | 3483 | if (config.text_read_only) |
f13a99db | 3484 | link_info.output_bfd->flags |= WP_TEXT; |
252b5132 | 3485 | else |
f13a99db | 3486 | link_info.output_bfd->flags &= ~WP_TEXT; |
252b5132 | 3487 | if (link_info.traditional_format) |
f13a99db | 3488 | link_info.output_bfd->flags |= BFD_TRADITIONAL_FORMAT; |
252b5132 | 3489 | else |
f13a99db | 3490 | link_info.output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; |
252b5132 RH |
3491 | break; |
3492 | ||
3493 | case lang_target_statement_enum: | |
3494 | current_target = statement->target_statement.target; | |
3495 | break; | |
3496 | default: | |
3497 | break; | |
3498 | } | |
3499 | } | |
3500 | ||
e5caa5e0 | 3501 | static void |
61826503 | 3502 | init_opb (asection *s) |
e5caa5e0 | 3503 | { |
bb294208 | 3504 | unsigned int x; |
61826503 | 3505 | |
e5caa5e0 | 3506 | opb_shift = 0; |
bb294208 AM |
3507 | if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
3508 | && s != NULL | |
3509 | && (s->flags & SEC_ELF_OCTETS) != 0) | |
3510 | return; | |
3511 | ||
3512 | x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture, | |
3513 | ldfile_output_machine); | |
e5caa5e0 AM |
3514 | if (x > 1) |
3515 | while ((x & 1) == 0) | |
3516 | { | |
3517 | x >>= 1; | |
3518 | ++opb_shift; | |
3519 | } | |
3520 | ASSERT (x == 1); | |
3521 | } | |
3522 | ||
252b5132 RH |
3523 | /* Open all the input files. */ |
3524 | ||
486329aa AM |
3525 | enum open_bfd_mode |
3526 | { | |
3527 | OPEN_BFD_NORMAL = 0, | |
3528 | OPEN_BFD_FORCE = 1, | |
3529 | OPEN_BFD_RESCAN = 2 | |
3530 | }; | |
0381901e | 3531 | #if BFD_SUPPORTS_PLUGINS |
9e2278f5 | 3532 | static lang_input_statement_type *plugin_insert = NULL; |
b02c4f16 | 3533 | static struct bfd_link_hash_entry *plugin_undefs = NULL; |
9e2278f5 | 3534 | #endif |
486329aa | 3535 | |
252b5132 | 3536 | static void |
486329aa | 3537 | open_input_bfds (lang_statement_union_type *s, enum open_bfd_mode mode) |
252b5132 | 3538 | { |
1579bae1 | 3539 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
3540 | { |
3541 | switch (s->header.type) | |
3542 | { | |
3543 | case lang_constructors_statement_enum: | |
486329aa | 3544 | open_input_bfds (constructor_list.head, mode); |
252b5132 RH |
3545 | break; |
3546 | case lang_output_section_statement_enum: | |
486329aa | 3547 | open_input_bfds (s->output_section_statement.children.head, mode); |
252b5132 RH |
3548 | break; |
3549 | case lang_wild_statement_enum: | |
08da4cac | 3550 | /* Maybe we should load the file's symbols. */ |
486329aa AM |
3551 | if ((mode & OPEN_BFD_RESCAN) == 0 |
3552 | && s->wild_statement.filename | |
97407faf AM |
3553 | && !wildcardp (s->wild_statement.filename) |
3554 | && !archive_path (s->wild_statement.filename)) | |
4a43e768 | 3555 | lookup_name (s->wild_statement.filename); |
486329aa | 3556 | open_input_bfds (s->wild_statement.children.head, mode); |
252b5132 RH |
3557 | break; |
3558 | case lang_group_statement_enum: | |
3559 | { | |
3560 | struct bfd_link_hash_entry *undefs; | |
0381901e | 3561 | #if BFD_SUPPORTS_PLUGINS |
b02c4f16 AM |
3562 | lang_input_statement_type *plugin_insert_save; |
3563 | #endif | |
252b5132 RH |
3564 | |
3565 | /* We must continually search the entries in the group | |
08da4cac KH |
3566 | until no new symbols are added to the list of undefined |
3567 | symbols. */ | |
252b5132 RH |
3568 | |
3569 | do | |
3570 | { | |
0381901e | 3571 | #if BFD_SUPPORTS_PLUGINS |
b02c4f16 AM |
3572 | plugin_insert_save = plugin_insert; |
3573 | #endif | |
252b5132 | 3574 | undefs = link_info.hash->undefs_tail; |
486329aa AM |
3575 | open_input_bfds (s->group_statement.children.head, |
3576 | mode | OPEN_BFD_FORCE); | |
252b5132 | 3577 | } |
b02c4f16 | 3578 | while (undefs != link_info.hash->undefs_tail |
0381901e | 3579 | #if BFD_SUPPORTS_PLUGINS |
b02c4f16 AM |
3580 | /* Objects inserted by a plugin, which are loaded |
3581 | before we hit this loop, may have added new | |
3582 | undefs. */ | |
3583 | || (plugin_insert != plugin_insert_save && plugin_undefs) | |
3584 | #endif | |
3585 | ); | |
252b5132 RH |
3586 | } |
3587 | break; | |
3588 | case lang_target_statement_enum: | |
3589 | current_target = s->target_statement.target; | |
3590 | break; | |
3591 | case lang_input_statement_enum: | |
66be1055 | 3592 | if (s->input_statement.flags.real) |
252b5132 | 3593 | { |
bde18da4 | 3594 | lang_statement_union_type **os_tail; |
252b5132 | 3595 | lang_statement_list_type add; |
d215621e | 3596 | bfd *abfd; |
252b5132 RH |
3597 | |
3598 | s->input_statement.target = current_target; | |
3599 | ||
3600 | /* If we are being called from within a group, and this | |
afd7a018 AM |
3601 | is an archive which has already been searched, then |
3602 | force it to be researched unless the whole archive | |
d215621e AM |
3603 | has been loaded already. Do the same for a rescan. |
3604 | Likewise reload --as-needed shared libs. */ | |
486329aa | 3605 | if (mode != OPEN_BFD_NORMAL |
0381901e | 3606 | #if BFD_SUPPORTS_PLUGINS |
9e2278f5 AM |
3607 | && ((mode & OPEN_BFD_RESCAN) == 0 |
3608 | || plugin_insert == NULL) | |
3609 | #endif | |
66be1055 | 3610 | && s->input_statement.flags.loaded |
d215621e AM |
3611 | && (abfd = s->input_statement.the_bfd) != NULL |
3612 | && ((bfd_get_format (abfd) == bfd_archive | |
3613 | && !s->input_statement.flags.whole_archive) | |
3614 | || (bfd_get_format (abfd) == bfd_object | |
3615 | && ((abfd->flags) & DYNAMIC) != 0 | |
3616 | && s->input_statement.flags.add_DT_NEEDED_for_regular | |
e77620a5 | 3617 | && bfd_get_flavour (abfd) == bfd_target_elf_flavour |
0fef4b98 | 3618 | && (elf_dyn_lib_class (abfd) & DYN_AS_NEEDED) != 0))) |
15fc2e13 | 3619 | { |
f38a2680 AM |
3620 | s->input_statement.flags.loaded = false; |
3621 | s->input_statement.flags.reload = true; | |
15fc2e13 | 3622 | } |
252b5132 | 3623 | |
5c1e6d53 | 3624 | os_tail = lang_os_list.tail; |
d1778b88 | 3625 | lang_list_init (&add); |
1276aefa | 3626 | |
0aa7f586 | 3627 | if (!load_symbols (&s->input_statement, &add)) |
f38a2680 | 3628 | config.make_executable = false; |
252b5132 RH |
3629 | |
3630 | if (add.head != NULL) | |
3631 | { | |
bde18da4 AM |
3632 | /* If this was a script with output sections then |
3633 | tack any added statements on to the end of the | |
3634 | list. This avoids having to reorder the output | |
3635 | section statement list. Very likely the user | |
3636 | forgot -T, and whatever we do here will not meet | |
3637 | naive user expectations. */ | |
5c1e6d53 | 3638 | if (os_tail != lang_os_list.tail) |
bde18da4 AM |
3639 | { |
3640 | einfo (_("%P: warning: %s contains output sections;" | |
3641 | " did you forget -T?\n"), | |
3642 | s->input_statement.filename); | |
3643 | *stat_ptr->tail = add.head; | |
3644 | stat_ptr->tail = add.tail; | |
3645 | } | |
3646 | else | |
3647 | { | |
3648 | *add.tail = s->header.next; | |
3649 | s->header.next = add.head; | |
3650 | } | |
252b5132 RH |
3651 | } |
3652 | } | |
0381901e | 3653 | #if BFD_SUPPORTS_PLUGINS |
9e2278f5 AM |
3654 | /* If we have found the point at which a plugin added new |
3655 | files, clear plugin_insert to enable archive rescan. */ | |
3656 | if (&s->input_statement == plugin_insert) | |
3657 | plugin_insert = NULL; | |
3658 | #endif | |
252b5132 | 3659 | break; |
e759c116 | 3660 | case lang_assignment_statement_enum: |
165f707a | 3661 | if (s->assignment_statement.exp->type.node_class != etree_assert) |
01554a74 | 3662 | exp_fold_tree_no_dot (s->assignment_statement.exp); |
e759c116 | 3663 | break; |
252b5132 RH |
3664 | default: |
3665 | break; | |
3666 | } | |
3667 | } | |
c4b78195 NC |
3668 | |
3669 | /* Exit if any of the files were missing. */ | |
66be1055 | 3670 | if (input_flags.missing_file) |
c4b78195 | 3671 | einfo ("%F"); |
252b5132 RH |
3672 | } |
3673 | ||
094e34f2 | 3674 | #ifdef ENABLE_LIBCTF |
926c9e76 NA |
3675 | /* Emit CTF errors and warnings. fp can be NULL to report errors/warnings |
3676 | that happened specifically at CTF open time. */ | |
3677 | static void | |
139633c3 | 3678 | lang_ctf_errs_warnings (ctf_dict_t *fp) |
926c9e76 NA |
3679 | { |
3680 | ctf_next_t *i = NULL; | |
3681 | char *text; | |
3682 | int is_warning; | |
3683 | int err; | |
3684 | ||
3685 | while ((text = ctf_errwarning_next (fp, &i, &is_warning, &err)) != NULL) | |
3686 | { | |
5e9b84f7 | 3687 | einfo (_("%s: %s\n"), is_warning ? _("CTF warning"): _("CTF error"), |
926c9e76 NA |
3688 | text); |
3689 | free (text); | |
3690 | } | |
3691 | if (err != ECTF_NEXT_END) | |
3692 | { | |
3693 | einfo (_("CTF error: cannot get CTF errors: `%s'\n"), | |
3694 | ctf_errmsg (err)); | |
3695 | } | |
3696 | ||
3697 | /* `err' returns errors from the error/warning iterator in particular. | |
3698 | These never assert. But if we have an fp, that could have recorded | |
3699 | an assertion failure: assert if it has done so. */ | |
3700 | ASSERT (!fp || ctf_errno (fp) != ECTF_INTERNAL); | |
3701 | } | |
3702 | ||
1ff6de03 NA |
3703 | /* Open the CTF sections in the input files with libctf: if any were opened, |
3704 | create a fake input file that we'll write the merged CTF data to later | |
3705 | on. */ | |
3706 | ||
3707 | static void | |
3708 | ldlang_open_ctf (void) | |
3709 | { | |
3710 | int any_ctf = 0; | |
3711 | int err; | |
3712 | ||
3713 | LANG_FOR_EACH_INPUT_STATEMENT (file) | |
3714 | { | |
3715 | asection *sect; | |
3716 | ||
139633c3 | 3717 | /* Incoming files from the compiler have a single ctf_dict_t in them |
1ff6de03 NA |
3718 | (which is presented to us by the libctf API in a ctf_archive_t |
3719 | wrapper): files derived from a previous relocatable link have a CTF | |
3720 | archive containing possibly many CTF files. */ | |
3721 | ||
3722 | if ((file->the_ctf = ctf_bfdopen (file->the_bfd, &err)) == NULL) | |
3723 | { | |
3724 | if (err != ECTF_NOCTFDATA) | |
926c9e76 NA |
3725 | { |
3726 | lang_ctf_errs_warnings (NULL); | |
3727 | einfo (_("%P: warning: CTF section in %pB not loaded; " | |
5e9b84f7 | 3728 | "its types will be discarded: %s\n"), file->the_bfd, |
1ff6de03 | 3729 | ctf_errmsg (err)); |
926c9e76 | 3730 | } |
1ff6de03 NA |
3731 | continue; |
3732 | } | |
3733 | ||
3734 | /* Prevent the contents of this section from being written, while | |
fa03171f NA |
3735 | requiring the section itself to be duplicated in the output, but only |
3736 | once. */ | |
1ff6de03 NA |
3737 | /* This section must exist if ctf_bfdopen() succeeded. */ |
3738 | sect = bfd_get_section_by_name (file->the_bfd, ".ctf"); | |
3739 | sect->size = 0; | |
3740 | sect->flags |= SEC_NEVER_LOAD | SEC_HAS_CONTENTS | SEC_LINKER_CREATED; | |
3741 | ||
fa03171f NA |
3742 | if (any_ctf) |
3743 | sect->flags |= SEC_EXCLUDE; | |
1ff6de03 NA |
3744 | any_ctf = 1; |
3745 | } | |
3746 | ||
3747 | if (!any_ctf) | |
3748 | { | |
3749 | ctf_output = NULL; | |
3750 | return; | |
3751 | } | |
3752 | ||
3753 | if ((ctf_output = ctf_create (&err)) != NULL) | |
3754 | return; | |
3755 | ||
c48acf6f | 3756 | einfo (_("%P: warning: CTF output not created: `%s'\n"), |
1ff6de03 NA |
3757 | ctf_errmsg (err)); |
3758 | ||
3759 | LANG_FOR_EACH_INPUT_STATEMENT (errfile) | |
3760 | ctf_close (errfile->the_ctf); | |
3761 | } | |
3762 | ||
3763 | /* Merge together CTF sections. After this, only the symtab-dependent | |
3764 | function and data object sections need adjustment. */ | |
3765 | ||
3766 | static void | |
3767 | lang_merge_ctf (void) | |
3768 | { | |
3769 | asection *output_sect; | |
5dba6f05 | 3770 | int flags = 0; |
1ff6de03 NA |
3771 | |
3772 | if (!ctf_output) | |
3773 | return; | |
3774 | ||
3775 | output_sect = bfd_get_section_by_name (link_info.output_bfd, ".ctf"); | |
3776 | ||
3777 | /* If the section was discarded, don't waste time merging. */ | |
3778 | if (output_sect == NULL) | |
3779 | { | |
139633c3 | 3780 | ctf_dict_close (ctf_output); |
1ff6de03 NA |
3781 | ctf_output = NULL; |
3782 | ||
3783 | LANG_FOR_EACH_INPUT_STATEMENT (file) | |
3784 | { | |
3785 | ctf_close (file->the_ctf); | |
3786 | file->the_ctf = NULL; | |
3787 | } | |
3788 | return; | |
3789 | } | |
3790 | ||
3791 | LANG_FOR_EACH_INPUT_STATEMENT (file) | |
3792 | { | |
3793 | if (!file->the_ctf) | |
3794 | continue; | |
3795 | ||
f320bba5 | 3796 | /* Takes ownership of file->the_ctf. */ |
1ff6de03 NA |
3797 | if (ctf_link_add_ctf (ctf_output, file->the_ctf, file->filename) < 0) |
3798 | { | |
f320bba5 EB |
3799 | einfo (_("%P: warning: CTF section in %pB cannot be linked: `%s'\n"), |
3800 | file->the_bfd, ctf_errmsg (ctf_errno (ctf_output))); | |
1ff6de03 NA |
3801 | ctf_close (file->the_ctf); |
3802 | file->the_ctf = NULL; | |
3803 | continue; | |
3804 | } | |
3805 | } | |
3806 | ||
5dba6f05 NA |
3807 | if (!config.ctf_share_duplicated) |
3808 | flags = CTF_LINK_SHARE_UNCONFLICTED; | |
3809 | else | |
3810 | flags = CTF_LINK_SHARE_DUPLICATED; | |
3811 | if (!config.ctf_variables) | |
3812 | flags |= CTF_LINK_OMIT_VARIABLES_SECTION; | |
35a01a04 NA |
3813 | if (bfd_link_relocatable (&link_info)) |
3814 | flags |= CTF_LINK_NO_FILTER_REPORTED_SYMS; | |
5dba6f05 NA |
3815 | |
3816 | if (ctf_link (ctf_output, flags) < 0) | |
1ff6de03 | 3817 | { |
926c9e76 | 3818 | lang_ctf_errs_warnings (ctf_output); |
f320bba5 | 3819 | einfo (_("%P: warning: CTF linking failed; " |
5e9b84f7 | 3820 | "output will have no CTF section: %s\n"), |
1ff6de03 NA |
3821 | ctf_errmsg (ctf_errno (ctf_output))); |
3822 | if (output_sect) | |
3823 | { | |
3824 | output_sect->size = 0; | |
3825 | output_sect->flags |= SEC_EXCLUDE; | |
3826 | } | |
3827 | } | |
926c9e76 | 3828 | /* Output any lingering errors that didn't come from ctf_link. */ |
8b37e7b6 | 3829 | lang_ctf_errs_warnings (ctf_output); |
1ff6de03 NA |
3830 | } |
3831 | ||
3d16b64e NA |
3832 | /* Let the emulation acquire strings from the dynamic strtab to help it optimize |
3833 | the CTF, if supported. */ | |
1ff6de03 NA |
3834 | |
3835 | void | |
3d16b64e | 3836 | ldlang_ctf_acquire_strings (struct elf_strtab_hash *dynstrtab) |
1ff6de03 | 3837 | { |
3d16b64e NA |
3838 | ldemul_acquire_strings_for_ctf (ctf_output, dynstrtab); |
3839 | } | |
3840 | ||
3841 | /* Inform the emulation about the addition of a new dynamic symbol, in BFD | |
3842 | internal format. */ | |
3843 | void ldlang_ctf_new_dynsym (int symidx, struct elf_internal_sym *sym) | |
3844 | { | |
3845 | ldemul_new_dynsym_for_ctf (ctf_output, symidx, sym); | |
1ff6de03 NA |
3846 | } |
3847 | ||
3848 | /* Write out the CTF section. Called early, if the emulation isn't going to | |
3849 | need to dedup against the strtab and symtab, then possibly called from the | |
3850 | target linker code if the dedup has happened. */ | |
3851 | static void | |
3852 | lang_write_ctf (int late) | |
3853 | { | |
3854 | size_t output_size; | |
3855 | asection *output_sect; | |
3856 | ||
3857 | if (!ctf_output) | |
3858 | return; | |
3859 | ||
3860 | if (late) | |
3861 | { | |
3862 | /* Emit CTF late if this emulation says it can do so. */ | |
3863 | if (ldemul_emit_ctf_early ()) | |
3864 | return; | |
3865 | } | |
3866 | else | |
3867 | { | |
3868 | if (!ldemul_emit_ctf_early ()) | |
3869 | return; | |
3870 | } | |
3871 | ||
3d16b64e NA |
3872 | /* Inform the emulation that all the symbols that will be received have |
3873 | been. */ | |
3874 | ||
3875 | ldemul_new_dynsym_for_ctf (ctf_output, 0, NULL); | |
3876 | ||
1ff6de03 NA |
3877 | /* Emit CTF. */ |
3878 | ||
3879 | output_sect = bfd_get_section_by_name (link_info.output_bfd, ".ctf"); | |
3880 | if (output_sect) | |
3881 | { | |
3882 | output_sect->contents = ctf_link_write (ctf_output, &output_size, | |
3883 | CTF_COMPRESSION_THRESHOLD); | |
3884 | output_sect->size = output_size; | |
3885 | output_sect->flags |= SEC_IN_MEMORY | SEC_KEEP; | |
3886 | ||
926c9e76 | 3887 | lang_ctf_errs_warnings (ctf_output); |
1ff6de03 NA |
3888 | if (!output_sect->contents) |
3889 | { | |
f320bba5 | 3890 | einfo (_("%P: warning: CTF section emission failed; " |
5e9b84f7 | 3891 | "output will have no CTF section: %s\n"), |
f320bba5 | 3892 | ctf_errmsg (ctf_errno (ctf_output))); |
1ff6de03 NA |
3893 | output_sect->size = 0; |
3894 | output_sect->flags |= SEC_EXCLUDE; | |
3895 | } | |
3896 | } | |
3897 | ||
3898 | /* This also closes every CTF input file used in the link. */ | |
139633c3 | 3899 | ctf_dict_close (ctf_output); |
1ff6de03 NA |
3900 | ctf_output = NULL; |
3901 | ||
3902 | LANG_FOR_EACH_INPUT_STATEMENT (file) | |
3903 | file->the_ctf = NULL; | |
3904 | } | |
3905 | ||
3906 | /* Write out the CTF section late, if the emulation needs that. */ | |
3907 | ||
3908 | void | |
3909 | ldlang_write_ctf_late (void) | |
3910 | { | |
3911 | /* Trigger a "late call", if the emulation needs one. */ | |
3912 | ||
3913 | lang_write_ctf (1); | |
3914 | } | |
094e34f2 NA |
3915 | #else |
3916 | static void | |
3917 | ldlang_open_ctf (void) | |
3918 | { | |
3919 | LANG_FOR_EACH_INPUT_STATEMENT (file) | |
3920 | { | |
3921 | asection *sect; | |
3922 | ||
3923 | /* If built without CTF, warn and delete all CTF sections from the output. | |
3924 | (The alternative would be to simply concatenate them, which does not | |
3925 | yield a valid CTF section.) */ | |
3926 | ||
3927 | if ((sect = bfd_get_section_by_name (file->the_bfd, ".ctf")) != NULL) | |
3928 | { | |
f320bba5 EB |
3929 | einfo (_("%P: warning: CTF section in %pB not linkable: " |
3930 | "%P was built without support for CTF\n"), file->the_bfd); | |
094e34f2 NA |
3931 | sect->size = 0; |
3932 | sect->flags |= SEC_EXCLUDE; | |
3933 | } | |
3934 | } | |
3935 | } | |
3936 | ||
3937 | static void lang_merge_ctf (void) {} | |
3938 | void | |
3d16b64e NA |
3939 | ldlang_ctf_acquire_strings (struct elf_strtab_hash *dynstrtab |
3940 | ATTRIBUTE_UNUSED) {} | |
3941 | void | |
3942 | ldlang_ctf_new_dynsym (int symidx ATTRIBUTE_UNUSED, | |
3943 | struct elf_internal_sym *sym ATTRIBUTE_UNUSED) {} | |
094e34f2 NA |
3944 | static void lang_write_ctf (int late ATTRIBUTE_UNUSED) {} |
3945 | void ldlang_write_ctf_late (void) {} | |
3946 | #endif | |
1ff6de03 | 3947 | |
08da4cac | 3948 | /* Add the supplied name to the symbol table as an undefined reference. |
fcf0e35b AM |
3949 | This is a two step process as the symbol table doesn't even exist at |
3950 | the time the ld command line is processed. First we put the name | |
3951 | on a list, then, once the output file has been opened, transfer the | |
3952 | name to the symbol table. */ | |
3953 | ||
e3e942e9 | 3954 | typedef struct bfd_sym_chain ldlang_undef_chain_list_type; |
252b5132 | 3955 | |
e3e942e9 | 3956 | #define ldlang_undef_chain_list_head entry_symbol.next |
252b5132 RH |
3957 | |
3958 | void | |
f38a2680 | 3959 | ldlang_add_undef (const char *const name, bool cmdline ATTRIBUTE_UNUSED) |
252b5132 | 3960 | { |
24898b70 | 3961 | ldlang_undef_chain_list_type *new_undef; |
252b5132 | 3962 | |
988de25b | 3963 | new_undef = stat_alloc (sizeof (*new_undef)); |
d3ce72d0 NC |
3964 | new_undef->next = ldlang_undef_chain_list_head; |
3965 | ldlang_undef_chain_list_head = new_undef; | |
252b5132 | 3966 | |
d3ce72d0 | 3967 | new_undef->name = xstrdup (name); |
fcf0e35b | 3968 | |
f13a99db | 3969 | if (link_info.output_bfd != NULL) |
d3ce72d0 | 3970 | insert_undefined (new_undef->name); |
fcf0e35b AM |
3971 | } |
3972 | ||
3973 | /* Insert NAME as undefined in the symbol table. */ | |
3974 | ||
3975 | static void | |
1579bae1 | 3976 | insert_undefined (const char *name) |
fcf0e35b AM |
3977 | { |
3978 | struct bfd_link_hash_entry *h; | |
3979 | ||
f38a2680 | 3980 | h = bfd_link_hash_lookup (link_info.hash, name, true, false, true); |
1579bae1 | 3981 | if (h == NULL) |
df5f2391 | 3982 | einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); |
fcf0e35b AM |
3983 | if (h->type == bfd_link_hash_new) |
3984 | { | |
3985 | h->type = bfd_link_hash_undefined; | |
3986 | h->u.undef.abfd = NULL; | |
f38a2680 | 3987 | h->non_ir_ref_regular = true; |
fcf0e35b AM |
3988 | bfd_link_add_undef (link_info.hash, h); |
3989 | } | |
252b5132 RH |
3990 | } |
3991 | ||
3992 | /* Run through the list of undefineds created above and place them | |
3993 | into the linker hash table as undefined symbols belonging to the | |
08da4cac KH |
3994 | script file. */ |
3995 | ||
252b5132 | 3996 | static void |
1579bae1 | 3997 | lang_place_undefineds (void) |
252b5132 RH |
3998 | { |
3999 | ldlang_undef_chain_list_type *ptr; | |
4000 | ||
1579bae1 AM |
4001 | for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next) |
4002 | insert_undefined (ptr->name); | |
252b5132 RH |
4003 | } |
4004 | ||
5789f845 AM |
4005 | /* Mark -u symbols against garbage collection. */ |
4006 | ||
4007 | static void | |
4008 | lang_mark_undefineds (void) | |
4009 | { | |
4010 | ldlang_undef_chain_list_type *ptr; | |
4011 | ||
fc304b88 | 4012 | if (is_elf_hash_table (link_info.hash)) |
5789f845 AM |
4013 | for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next) |
4014 | { | |
4015 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) | |
f38a2680 | 4016 | bfd_link_hash_lookup (link_info.hash, ptr->name, false, false, true); |
5789f845 AM |
4017 | if (h != NULL) |
4018 | h->mark = 1; | |
4019 | } | |
4020 | } | |
4021 | ||
0a618243 AB |
4022 | /* Structure used to build the list of symbols that the user has required |
4023 | be defined. */ | |
4024 | ||
4025 | struct require_defined_symbol | |
4026 | { | |
4027 | const char *name; | |
4028 | struct require_defined_symbol *next; | |
4029 | }; | |
4030 | ||
4031 | /* The list of symbols that the user has required be defined. */ | |
4032 | ||
4033 | static struct require_defined_symbol *require_defined_symbol_list; | |
4034 | ||
4035 | /* Add a new symbol NAME to the list of symbols that are required to be | |
4036 | defined. */ | |
4037 | ||
4038 | void | |
0aa7f586 | 4039 | ldlang_add_require_defined (const char *const name) |
0a618243 AB |
4040 | { |
4041 | struct require_defined_symbol *ptr; | |
4042 | ||
f38a2680 | 4043 | ldlang_add_undef (name, true); |
988de25b | 4044 | ptr = stat_alloc (sizeof (*ptr)); |
0a618243 AB |
4045 | ptr->next = require_defined_symbol_list; |
4046 | ptr->name = strdup (name); | |
4047 | require_defined_symbol_list = ptr; | |
4048 | } | |
4049 | ||
4050 | /* Check that all symbols the user required to be defined, are defined, | |
4051 | raise an error if we find a symbol that is not defined. */ | |
4052 | ||
4053 | static void | |
4054 | ldlang_check_require_defined_symbols (void) | |
4055 | { | |
4056 | struct require_defined_symbol *ptr; | |
4057 | ||
4058 | for (ptr = require_defined_symbol_list; ptr != NULL; ptr = ptr->next) | |
4059 | { | |
4060 | struct bfd_link_hash_entry *h; | |
4061 | ||
4062 | h = bfd_link_hash_lookup (link_info.hash, ptr->name, | |
f38a2680 | 4063 | false, false, true); |
0a618243 | 4064 | if (h == NULL |
0aa7f586 AM |
4065 | || (h->type != bfd_link_hash_defined |
4066 | && h->type != bfd_link_hash_defweak)) | |
df5f2391 | 4067 | einfo(_("%X%P: required symbol `%s' not defined\n"), ptr->name); |
0a618243 AB |
4068 | } |
4069 | } | |
4070 | ||
0841712e JJ |
4071 | /* Check for all readonly or some readwrite sections. */ |
4072 | ||
4073 | static void | |
6feb9908 AM |
4074 | check_input_sections |
4075 | (lang_statement_union_type *s, | |
4076 | lang_output_section_statement_type *output_section_statement) | |
0841712e | 4077 | { |
988de25b | 4078 | for (; s != NULL; s = s->header.next) |
0841712e JJ |
4079 | { |
4080 | switch (s->header.type) | |
967928e9 AM |
4081 | { |
4082 | case lang_wild_statement_enum: | |
4083 | walk_wild (&s->wild_statement, check_section_callback, | |
4084 | output_section_statement); | |
0aa7f586 | 4085 | if (!output_section_statement->all_input_readonly) |
967928e9 AM |
4086 | return; |
4087 | break; | |
4088 | case lang_constructors_statement_enum: | |
4089 | check_input_sections (constructor_list.head, | |
4090 | output_section_statement); | |
0aa7f586 | 4091 | if (!output_section_statement->all_input_readonly) |
967928e9 AM |
4092 | return; |
4093 | break; | |
4094 | case lang_group_statement_enum: | |
4095 | check_input_sections (s->group_statement.children.head, | |
4096 | output_section_statement); | |
0aa7f586 | 4097 | if (!output_section_statement->all_input_readonly) |
967928e9 AM |
4098 | return; |
4099 | break; | |
4100 | default: | |
4101 | break; | |
4102 | } | |
0841712e JJ |
4103 | } |
4104 | } | |
4105 | ||
bcaa7b3e L |
4106 | /* Update wildcard statements if needed. */ |
4107 | ||
4108 | static void | |
4109 | update_wild_statements (lang_statement_union_type *s) | |
4110 | { | |
4111 | struct wildcard_list *sec; | |
4112 | ||
4113 | switch (sort_section) | |
4114 | { | |
4115 | default: | |
4116 | FAIL (); | |
4117 | ||
4118 | case none: | |
4119 | break; | |
4120 | ||
4121 | case by_name: | |
4122 | case by_alignment: | |
4123 | for (; s != NULL; s = s->header.next) | |
4124 | { | |
4125 | switch (s->header.type) | |
4126 | { | |
4127 | default: | |
4128 | break; | |
4129 | ||
4130 | case lang_wild_statement_enum: | |
0d0999db L |
4131 | for (sec = s->wild_statement.section_list; sec != NULL; |
4132 | sec = sec->next) | |
2d3181c7 AM |
4133 | /* Don't sort .init/.fini sections. */ |
4134 | if (strcmp (sec->spec.name, ".init") != 0 | |
4135 | && strcmp (sec->spec.name, ".fini") != 0) | |
bcaa7b3e L |
4136 | switch (sec->spec.sorted) |
4137 | { | |
4138 | case none: | |
4139 | sec->spec.sorted = sort_section; | |
4140 | break; | |
4141 | case by_name: | |
4142 | if (sort_section == by_alignment) | |
4143 | sec->spec.sorted = by_name_alignment; | |
4144 | break; | |
4145 | case by_alignment: | |
4146 | if (sort_section == by_name) | |
4147 | sec->spec.sorted = by_alignment_name; | |
4148 | break; | |
4149 | default: | |
4150 | break; | |
4151 | } | |
bcaa7b3e L |
4152 | break; |
4153 | ||
4154 | case lang_constructors_statement_enum: | |
4155 | update_wild_statements (constructor_list.head); | |
4156 | break; | |
4157 | ||
4158 | case lang_output_section_statement_enum: | |
2d3181c7 AM |
4159 | update_wild_statements |
4160 | (s->output_section_statement.children.head); | |
bcaa7b3e L |
4161 | break; |
4162 | ||
4163 | case lang_group_statement_enum: | |
4164 | update_wild_statements (s->group_statement.children.head); | |
4165 | break; | |
4166 | } | |
4167 | } | |
4168 | break; | |
4169 | } | |
4170 | } | |
4171 | ||
396a2467 | 4172 | /* Open input files and attach to output sections. */ |
08da4cac | 4173 | |
252b5132 | 4174 | static void |
1579bae1 AM |
4175 | map_input_to_output_sections |
4176 | (lang_statement_union_type *s, const char *target, | |
afd7a018 | 4177 | lang_output_section_statement_type *os) |
252b5132 | 4178 | { |
1579bae1 | 4179 | for (; s != NULL; s = s->header.next) |
252b5132 | 4180 | { |
dfa7b0b8 AM |
4181 | lang_output_section_statement_type *tos; |
4182 | flagword flags; | |
4183 | ||
252b5132 RH |
4184 | switch (s->header.type) |
4185 | { | |
252b5132 | 4186 | case lang_wild_statement_enum: |
afd7a018 | 4187 | wild (&s->wild_statement, target, os); |
abc6ab0a | 4188 | break; |
252b5132 RH |
4189 | case lang_constructors_statement_enum: |
4190 | map_input_to_output_sections (constructor_list.head, | |
4191 | target, | |
afd7a018 | 4192 | os); |
252b5132 RH |
4193 | break; |
4194 | case lang_output_section_statement_enum: | |
dfa7b0b8 | 4195 | tos = &s->output_section_statement; |
21401fc7 AM |
4196 | if (tos->constraint == ONLY_IF_RW |
4197 | || tos->constraint == ONLY_IF_RO) | |
0841712e | 4198 | { |
f38a2680 | 4199 | tos->all_input_readonly = true; |
dfa7b0b8 AM |
4200 | check_input_sections (tos->children.head, tos); |
4201 | if (tos->all_input_readonly != (tos->constraint == ONLY_IF_RO)) | |
21401fc7 | 4202 | tos->constraint = -1; |
0841712e | 4203 | } |
21401fc7 AM |
4204 | if (tos->constraint >= 0) |
4205 | map_input_to_output_sections (tos->children.head, | |
4206 | target, | |
4207 | tos); | |
a431bc2e AM |
4208 | break; |
4209 | case lang_output_statement_enum: | |
252b5132 RH |
4210 | break; |
4211 | case lang_target_statement_enum: | |
4212 | target = s->target_statement.target; | |
4213 | break; | |
4214 | case lang_group_statement_enum: | |
4215 | map_input_to_output_sections (s->group_statement.children.head, | |
4216 | target, | |
afd7a018 | 4217 | os); |
252b5132 | 4218 | break; |
384d938f NS |
4219 | case lang_data_statement_enum: |
4220 | /* Make sure that any sections mentioned in the expression | |
4221 | are initialized. */ | |
4222 | exp_init_os (s->data_statement.exp); | |
2e76e85a AM |
4223 | /* The output section gets CONTENTS, ALLOC and LOAD, but |
4224 | these may be overridden by the script. */ | |
dfa7b0b8 AM |
4225 | flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD; |
4226 | switch (os->sectype) | |
4227 | { | |
4228 | case normal_section: | |
4229 | case overlay_section: | |
7b243801 | 4230 | case first_overlay_section: |
dfa7b0b8 AM |
4231 | break; |
4232 | case noalloc_section: | |
4233 | flags = SEC_HAS_CONTENTS; | |
4234 | break; | |
4235 | case noload_section: | |
f4eaaf7f AM |
4236 | if (bfd_get_flavour (link_info.output_bfd) |
4237 | == bfd_target_elf_flavour) | |
4238 | flags = SEC_NEVER_LOAD | SEC_ALLOC; | |
4239 | else | |
4240 | flags = SEC_NEVER_LOAD | SEC_HAS_CONTENTS; | |
dfa7b0b8 AM |
4241 | break; |
4242 | } | |
a431bc2e | 4243 | if (os->bfd_section == NULL) |
326adec3 | 4244 | init_os (os, flags | SEC_READONLY); |
a431bc2e AM |
4245 | else |
4246 | os->bfd_section->flags |= flags; | |
afd7a018 | 4247 | break; |
252b5132 | 4248 | case lang_input_section_enum: |
e0f6802f AM |
4249 | break; |
4250 | case lang_fill_statement_enum: | |
252b5132 | 4251 | case lang_object_symbols_statement_enum: |
252b5132 RH |
4252 | case lang_reloc_statement_enum: |
4253 | case lang_padding_statement_enum: | |
4254 | case lang_input_statement_enum: | |
afd7a018 | 4255 | if (os != NULL && os->bfd_section == NULL) |
dfa7b0b8 | 4256 | init_os (os, 0); |
252b5132 RH |
4257 | break; |
4258 | case lang_assignment_statement_enum: | |
afd7a018 | 4259 | if (os != NULL && os->bfd_section == NULL) |
dfa7b0b8 | 4260 | init_os (os, 0); |
252b5132 RH |
4261 | |
4262 | /* Make sure that any sections mentioned in the assignment | |
08da4cac | 4263 | are initialized. */ |
252b5132 RH |
4264 | exp_init_os (s->assignment_statement.exp); |
4265 | break; | |
252b5132 | 4266 | case lang_address_statement_enum: |
a431bc2e AM |
4267 | /* Mark the specified section with the supplied address. |
4268 | If this section was actually a segment marker, then the | |
4269 | directive is ignored if the linker script explicitly | |
4270 | processed the segment marker. Originally, the linker | |
4271 | treated segment directives (like -Ttext on the | |
4272 | command-line) as section directives. We honor the | |
370dfff4 | 4273 | section directive semantics for backwards compatibility; |
a431bc2e AM |
4274 | linker scripts that do not specifically check for |
4275 | SEGMENT_START automatically get the old semantics. */ | |
329c1c86 | 4276 | if (!s->address_statement.segment |
ba916c8a MM |
4277 | || !s->address_statement.segment->used) |
4278 | { | |
dfa7b0b8 AM |
4279 | const char *name = s->address_statement.section_name; |
4280 | ||
4281 | /* Create the output section statement here so that | |
4282 | orphans with a set address will be placed after other | |
4283 | script sections. If we let the orphan placement code | |
4284 | place them in amongst other sections then the address | |
4285 | will affect following script sections, which is | |
4286 | likely to surprise naive users. */ | |
21401fc7 | 4287 | tos = lang_output_section_statement_lookup (name, 0, 1); |
dfa7b0b8 AM |
4288 | tos->addr_tree = s->address_statement.address; |
4289 | if (tos->bfd_section == NULL) | |
4290 | init_os (tos, 0); | |
ba916c8a | 4291 | } |
252b5132 | 4292 | break; |
53d25da6 AM |
4293 | case lang_insert_statement_enum: |
4294 | break; | |
4295 | } | |
4296 | } | |
4297 | } | |
4298 | ||
4299 | /* An insert statement snips out all the linker statements from the | |
4300 | start of the list and places them after the output section | |
4301 | statement specified by the insert. This operation is complicated | |
4302 | by the fact that we keep a doubly linked list of output section | |
776ab89f AM |
4303 | statements as well as the singly linked list of all statements. |
4304 | FIXME someday: Twiddling with the list not only moves statements | |
4305 | from the user's script but also input and group statements that are | |
4306 | built from command line object files and --start-group. We only | |
4307 | get away with this because the list pointers used by file_chain | |
4308 | and input_file_chain are not reordered, and processing via | |
4309 | statement_list after this point mostly ignores input statements. | |
4310 | One exception is the map file, where LOAD and START GROUP/END GROUP | |
4311 | can end up looking odd. */ | |
53d25da6 AM |
4312 | |
4313 | static void | |
776ab89f | 4314 | process_insert_statements (lang_statement_union_type **start) |
53d25da6 AM |
4315 | { |
4316 | lang_statement_union_type **s; | |
4317 | lang_output_section_statement_type *first_os = NULL; | |
4318 | lang_output_section_statement_type *last_os = NULL; | |
66c103b7 | 4319 | lang_output_section_statement_type *os; |
53d25da6 | 4320 | |
776ab89f AM |
4321 | s = start; |
4322 | while (*s != NULL) | |
53d25da6 AM |
4323 | { |
4324 | if ((*s)->header.type == lang_output_section_statement_enum) | |
4325 | { | |
4326 | /* Keep pointers to the first and last output section | |
4327 | statement in the sequence we may be about to move. */ | |
d2ae7be0 AM |
4328 | os = &(*s)->output_section_statement; |
4329 | ||
4330 | ASSERT (last_os == NULL || last_os->next == os); | |
4331 | last_os = os; | |
66c103b7 AM |
4332 | |
4333 | /* Set constraint negative so that lang_output_section_find | |
4334 | won't match this output section statement. At this | |
4335 | stage in linking constraint has values in the range | |
4336 | [-1, ONLY_IN_RW]. */ | |
4337 | last_os->constraint = -2 - last_os->constraint; | |
53d25da6 AM |
4338 | if (first_os == NULL) |
4339 | first_os = last_os; | |
4340 | } | |
776ab89f AM |
4341 | else if ((*s)->header.type == lang_group_statement_enum) |
4342 | { | |
4343 | /* A user might put -T between --start-group and | |
4344 | --end-group. One way this odd construct might arise is | |
4345 | from a wrapper around ld to change library search | |
4346 | behaviour. For example: | |
4347 | #! /bin/sh | |
4348 | exec real_ld --start-group "$@" --end-group | |
4349 | This isn't completely unreasonable so go looking inside a | |
4350 | group statement for insert statements. */ | |
4351 | process_insert_statements (&(*s)->group_statement.children.head); | |
4352 | } | |
53d25da6 AM |
4353 | else if ((*s)->header.type == lang_insert_statement_enum) |
4354 | { | |
4355 | lang_insert_statement_type *i = &(*s)->insert_statement; | |
4356 | lang_output_section_statement_type *where; | |
53d25da6 AM |
4357 | lang_statement_union_type **ptr; |
4358 | lang_statement_union_type *first; | |
4359 | ||
abf874aa CL |
4360 | if (link_info.non_contiguous_regions) |
4361 | { | |
4362 | einfo (_("warning: INSERT statement in linker script is " | |
4363 | "incompatible with --enable-non-contiguous-regions.\n")); | |
4364 | } | |
4365 | ||
53d25da6 AM |
4366 | where = lang_output_section_find (i->where); |
4367 | if (where != NULL && i->is_before) | |
4368 | { | |
967928e9 | 4369 | do |
53d25da6 | 4370 | where = where->prev; |
66c103b7 | 4371 | while (where != NULL && where->constraint < 0); |
53d25da6 AM |
4372 | } |
4373 | if (where == NULL) | |
4374 | { | |
66c103b7 AM |
4375 | einfo (_("%F%P: %s not found for insert\n"), i->where); |
4376 | return; | |
53d25da6 AM |
4377 | } |
4378 | ||
4379 | /* Deal with reordering the output section statement list. */ | |
4380 | if (last_os != NULL) | |
4381 | { | |
4382 | asection *first_sec, *last_sec; | |
29183214 | 4383 | struct lang_output_section_statement_struct **next; |
53d25da6 AM |
4384 | |
4385 | /* Snip out the output sections we are moving. */ | |
4386 | first_os->prev->next = last_os->next; | |
4387 | if (last_os->next == NULL) | |
29183214 L |
4388 | { |
4389 | next = &first_os->prev->next; | |
5c1e6d53 | 4390 | lang_os_list.tail = (lang_statement_union_type **) next; |
29183214 | 4391 | } |
53d25da6 AM |
4392 | else |
4393 | last_os->next->prev = first_os->prev; | |
4394 | /* Add them in at the new position. */ | |
4395 | last_os->next = where->next; | |
4396 | if (where->next == NULL) | |
29183214 L |
4397 | { |
4398 | next = &last_os->next; | |
5c1e6d53 | 4399 | lang_os_list.tail = (lang_statement_union_type **) next; |
29183214 | 4400 | } |
53d25da6 AM |
4401 | else |
4402 | where->next->prev = last_os; | |
4403 | first_os->prev = where; | |
4404 | where->next = first_os; | |
4405 | ||
4406 | /* Move the bfd sections in the same way. */ | |
4407 | first_sec = NULL; | |
4408 | last_sec = NULL; | |
4409 | for (os = first_os; os != NULL; os = os->next) | |
4410 | { | |
66c103b7 | 4411 | os->constraint = -2 - os->constraint; |
53d25da6 AM |
4412 | if (os->bfd_section != NULL |
4413 | && os->bfd_section->owner != NULL) | |
4414 | { | |
4415 | last_sec = os->bfd_section; | |
4416 | if (first_sec == NULL) | |
4417 | first_sec = last_sec; | |
4418 | } | |
4419 | if (os == last_os) | |
4420 | break; | |
4421 | } | |
4422 | if (last_sec != NULL) | |
4423 | { | |
4424 | asection *sec = where->bfd_section; | |
4425 | if (sec == NULL) | |
4426 | sec = output_prev_sec_find (where); | |
4427 | ||
4428 | /* The place we want to insert must come after the | |
4429 | sections we are moving. So if we find no | |
4430 | section or if the section is the same as our | |
4431 | last section, then no move is needed. */ | |
4432 | if (sec != NULL && sec != last_sec) | |
4433 | { | |
4434 | /* Trim them off. */ | |
4435 | if (first_sec->prev != NULL) | |
4436 | first_sec->prev->next = last_sec->next; | |
4437 | else | |
f13a99db | 4438 | link_info.output_bfd->sections = last_sec->next; |
53d25da6 AM |
4439 | if (last_sec->next != NULL) |
4440 | last_sec->next->prev = first_sec->prev; | |
4441 | else | |
f13a99db | 4442 | link_info.output_bfd->section_last = first_sec->prev; |
53d25da6 AM |
4443 | /* Add back. */ |
4444 | last_sec->next = sec->next; | |
4445 | if (sec->next != NULL) | |
4446 | sec->next->prev = last_sec; | |
4447 | else | |
f13a99db | 4448 | link_info.output_bfd->section_last = last_sec; |
53d25da6 AM |
4449 | first_sec->prev = sec; |
4450 | sec->next = first_sec; | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | first_os = NULL; | |
4455 | last_os = NULL; | |
4456 | } | |
4457 | ||
4458 | ptr = insert_os_after (where); | |
776ab89f AM |
4459 | /* Snip everything from the start of the list, up to and |
4460 | including the insert statement we are currently processing. */ | |
4461 | first = *start; | |
4462 | *start = (*s)->header.next; | |
4463 | /* Add them back where they belong, minus the insert. */ | |
53d25da6 AM |
4464 | *s = *ptr; |
4465 | if (*s == NULL) | |
4466 | statement_list.tail = s; | |
4467 | *ptr = first; | |
776ab89f AM |
4468 | s = start; |
4469 | continue; | |
252b5132 | 4470 | } |
776ab89f | 4471 | s = &(*s)->header.next; |
252b5132 | 4472 | } |
66c103b7 AM |
4473 | |
4474 | /* Undo constraint twiddling. */ | |
4475 | for (os = first_os; os != NULL; os = os->next) | |
4476 | { | |
4477 | os->constraint = -2 - os->constraint; | |
4478 | if (os == last_os) | |
4479 | break; | |
4480 | } | |
252b5132 RH |
4481 | } |
4482 | ||
4bd5a393 AM |
4483 | /* An output section might have been removed after its statement was |
4484 | added. For example, ldemul_before_allocation can remove dynamic | |
4485 | sections if they turn out to be not needed. Clean them up here. */ | |
4486 | ||
8423293d | 4487 | void |
1579bae1 | 4488 | strip_excluded_output_sections (void) |
4bd5a393 | 4489 | { |
afd7a018 | 4490 | lang_output_section_statement_type *os; |
4bd5a393 | 4491 | |
046183de | 4492 | /* Run lang_size_sections (if not already done). */ |
e9ee469a AM |
4493 | if (expld.phase != lang_mark_phase_enum) |
4494 | { | |
4495 | expld.phase = lang_mark_phase_enum; | |
0f99513f | 4496 | expld.dataseg.phase = exp_seg_none; |
f38a2680 | 4497 | one_lang_size_sections_pass (NULL, false); |
e9ee469a AM |
4498 | lang_reset_memory_regions (); |
4499 | } | |
4500 | ||
8ce18f9c | 4501 | for (os = (void *) lang_os_list.head; |
afd7a018 AM |
4502 | os != NULL; |
4503 | os = os->next) | |
4bd5a393 | 4504 | { |
75ff4589 | 4505 | asection *output_section; |
f38a2680 | 4506 | bool exclude; |
4bd5a393 | 4507 | |
66c103b7 | 4508 | if (os->constraint < 0) |
0841712e | 4509 | continue; |
8423293d | 4510 | |
75ff4589 L |
4511 | output_section = os->bfd_section; |
4512 | if (output_section == NULL) | |
8423293d AM |
4513 | continue; |
4514 | ||
32124d5b AM |
4515 | exclude = (output_section->rawsize == 0 |
4516 | && (output_section->flags & SEC_KEEP) == 0 | |
f13a99db | 4517 | && !bfd_section_removed_from_list (link_info.output_bfd, |
32124d5b AM |
4518 | output_section)); |
4519 | ||
4520 | /* Some sections have not yet been sized, notably .gnu.version, | |
4521 | .dynsym, .dynstr and .hash. These all have SEC_LINKER_CREATED | |
4522 | input sections, so don't drop output sections that have such | |
4523 | input sections unless they are also marked SEC_EXCLUDE. */ | |
4524 | if (exclude && output_section->map_head.s != NULL) | |
75ff4589 L |
4525 | { |
4526 | asection *s; | |
8423293d | 4527 | |
32124d5b | 4528 | for (s = output_section->map_head.s; s != NULL; s = s->map_head.s) |
b514e6a5 AM |
4529 | if ((s->flags & SEC_EXCLUDE) == 0 |
4530 | && ((s->flags & SEC_LINKER_CREATED) != 0 | |
4531 | || link_info.emitrelocations)) | |
e9ee469a | 4532 | { |
f38a2680 | 4533 | exclude = false; |
e9ee469a AM |
4534 | break; |
4535 | } | |
75ff4589 | 4536 | } |
8423293d | 4537 | |
32124d5b | 4538 | if (exclude) |
4bd5a393 | 4539 | { |
e9ee469a AM |
4540 | /* We don't set bfd_section to NULL since bfd_section of the |
4541 | removed output section statement may still be used. */ | |
6d8bf25d | 4542 | if (!os->update_dot) |
f38a2680 | 4543 | os->ignored = true; |
e9ee469a | 4544 | output_section->flags |= SEC_EXCLUDE; |
f13a99db AM |
4545 | bfd_section_list_remove (link_info.output_bfd, output_section); |
4546 | link_info.output_bfd->section_count--; | |
4bd5a393 AM |
4547 | } |
4548 | } | |
18cd5bce AM |
4549 | } |
4550 | ||
4551 | /* Called from ldwrite to clear out asection.map_head and | |
211dc24b | 4552 | asection.map_tail for use as link_orders in ldwrite. */ |
18cd5bce AM |
4553 | |
4554 | void | |
4555 | lang_clear_os_map (void) | |
4556 | { | |
4557 | lang_output_section_statement_type *os; | |
4558 | ||
4559 | if (map_head_is_link_order) | |
4560 | return; | |
4561 | ||
8ce18f9c | 4562 | for (os = (void *) lang_os_list.head; |
18cd5bce AM |
4563 | os != NULL; |
4564 | os = os->next) | |
4565 | { | |
4566 | asection *output_section; | |
4567 | ||
4568 | if (os->constraint < 0) | |
4569 | continue; | |
4570 | ||
4571 | output_section = os->bfd_section; | |
4572 | if (output_section == NULL) | |
4573 | continue; | |
4574 | ||
4575 | /* TODO: Don't just junk map_head.s, turn them into link_orders. */ | |
4576 | output_section->map_head.link_order = NULL; | |
4577 | output_section->map_tail.link_order = NULL; | |
4578 | } | |
8423293d AM |
4579 | |
4580 | /* Stop future calls to lang_add_section from messing with map_head | |
4581 | and map_tail link_order fields. */ | |
f38a2680 | 4582 | map_head_is_link_order = true; |
4bd5a393 AM |
4583 | } |
4584 | ||
252b5132 | 4585 | static void |
1579bae1 AM |
4586 | print_output_section_statement |
4587 | (lang_output_section_statement_type *output_section_statement) | |
252b5132 RH |
4588 | { |
4589 | asection *section = output_section_statement->bfd_section; | |
4590 | int len; | |
4591 | ||
4592 | if (output_section_statement != abs_output_section) | |
4593 | { | |
4594 | minfo ("\n%s", output_section_statement->name); | |
4595 | ||
4596 | if (section != NULL) | |
4597 | { | |
4598 | print_dot = section->vma; | |
4599 | ||
4600 | len = strlen (output_section_statement->name); | |
4601 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
4602 | { | |
4603 | print_nl (); | |
4604 | len = 0; | |
4605 | } | |
4606 | while (len < SECTION_NAME_MAP_LENGTH) | |
4607 | { | |
4608 | print_space (); | |
4609 | ++len; | |
4610 | } | |
4611 | ||
953dd97e | 4612 | minfo ("0x%V %W", section->vma, TO_ADDR (section->size)); |
252b5132 | 4613 | |
67f744f3 AM |
4614 | if (section->vma != section->lma) |
4615 | minfo (_(" load address 0x%V"), section->lma); | |
5590fba9 NC |
4616 | |
4617 | if (output_section_statement->update_dot_tree != NULL) | |
4618 | exp_fold_tree (output_section_statement->update_dot_tree, | |
4619 | bfd_abs_section_ptr, &print_dot); | |
252b5132 RH |
4620 | } |
4621 | ||
4622 | print_nl (); | |
4623 | } | |
4624 | ||
4625 | print_statement_list (output_section_statement->children.head, | |
4626 | output_section_statement); | |
4627 | } | |
4628 | ||
4629 | static void | |
1579bae1 AM |
4630 | print_assignment (lang_assignment_statement_type *assignment, |
4631 | lang_output_section_statement_type *output_section) | |
252b5132 | 4632 | { |
3b83e13a | 4633 | unsigned int i; |
f38a2680 | 4634 | bool is_dot; |
afd7a018 | 4635 | etree_type *tree; |
8658f989 | 4636 | asection *osec; |
252b5132 RH |
4637 | |
4638 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
4639 | print_space (); | |
4640 | ||
afd7a018 AM |
4641 | if (assignment->exp->type.node_class == etree_assert) |
4642 | { | |
f38a2680 | 4643 | is_dot = false; |
afd7a018 AM |
4644 | tree = assignment->exp->assert_s.child; |
4645 | } | |
4646 | else | |
4647 | { | |
4648 | const char *dst = assignment->exp->assign.dst; | |
3b83e13a NC |
4649 | |
4650 | is_dot = (dst[0] == '.' && dst[1] == 0); | |
6a846243 | 4651 | tree = assignment->exp; |
afd7a018 AM |
4652 | } |
4653 | ||
8658f989 AM |
4654 | osec = output_section->bfd_section; |
4655 | if (osec == NULL) | |
4656 | osec = bfd_abs_section_ptr; | |
c05b575a AB |
4657 | |
4658 | if (assignment->exp->type.node_class != etree_provide) | |
4659 | exp_fold_tree (tree, osec, &print_dot); | |
4660 | else | |
f38a2680 | 4661 | expld.result.valid_p = false; |
c05b575a | 4662 | |
e9ee469a | 4663 | if (expld.result.valid_p) |
7b17f854 | 4664 | { |
7b17f854 RS |
4665 | bfd_vma value; |
4666 | ||
4194268f AM |
4667 | if (assignment->exp->type.node_class == etree_assert |
4668 | || is_dot | |
4669 | || expld.assign_name != NULL) | |
3b83e13a | 4670 | { |
e9ee469a | 4671 | value = expld.result.value; |
10dbd1f3 | 4672 | |
7542af2a | 4673 | if (expld.result.section != NULL) |
e9ee469a | 4674 | value += expld.result.section->vma; |
7b17f854 | 4675 | |
3b83e13a NC |
4676 | minfo ("0x%V", value); |
4677 | if (is_dot) | |
4678 | print_dot = value; | |
4679 | } | |
4680 | else | |
4681 | { | |
4682 | struct bfd_link_hash_entry *h; | |
4683 | ||
4684 | h = bfd_link_hash_lookup (link_info.hash, assignment->exp->assign.dst, | |
f38a2680 | 4685 | false, false, true); |
6a846243 AM |
4686 | if (h != NULL |
4687 | && (h->type == bfd_link_hash_defined | |
4688 | || h->type == bfd_link_hash_defweak)) | |
3b83e13a | 4689 | { |
10dbd1f3 | 4690 | value = h->u.def.value; |
f37a7048 NS |
4691 | value += h->u.def.section->output_section->vma; |
4692 | value += h->u.def.section->output_offset; | |
3b83e13a NC |
4693 | |
4694 | minfo ("[0x%V]", value); | |
4695 | } | |
4696 | else | |
4697 | minfo ("[unresolved]"); | |
4698 | } | |
7b17f854 | 4699 | } |
252b5132 RH |
4700 | else |
4701 | { | |
c05b575a | 4702 | if (assignment->exp->type.node_class == etree_provide) |
0aa7f586 | 4703 | minfo ("[!provide]"); |
c05b575a | 4704 | else |
0aa7f586 | 4705 | minfo ("*undef* "); |
252b5132 RH |
4706 | #ifdef BFD64 |
4707 | minfo (" "); | |
4708 | #endif | |
4709 | } | |
4194268f | 4710 | expld.assign_name = NULL; |
252b5132 RH |
4711 | |
4712 | minfo (" "); | |
252b5132 | 4713 | exp_print_tree (assignment->exp); |
252b5132 RH |
4714 | print_nl (); |
4715 | } | |
4716 | ||
4717 | static void | |
1579bae1 | 4718 | print_input_statement (lang_input_statement_type *statm) |
252b5132 | 4719 | { |
0d41d9a2 | 4720 | if (statm->filename != NULL) |
906e58ca | 4721 | fprintf (config.map_file, "LOAD %s\n", statm->filename); |
252b5132 RH |
4722 | } |
4723 | ||
4724 | /* Print all symbols defined in a particular section. This is called | |
35835446 | 4725 | via bfd_link_hash_traverse, or by print_all_symbols. */ |
252b5132 | 4726 | |
f38a2680 | 4727 | bool |
1579bae1 | 4728 | print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr) |
252b5132 | 4729 | { |
1e9cc1c2 | 4730 | asection *sec = (asection *) ptr; |
252b5132 RH |
4731 | |
4732 | if ((hash_entry->type == bfd_link_hash_defined | |
4733 | || hash_entry->type == bfd_link_hash_defweak) | |
4734 | && sec == hash_entry->u.def.section) | |
4735 | { | |
4736 | int i; | |
4737 | ||
4738 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) | |
4739 | print_space (); | |
4740 | minfo ("0x%V ", | |
4741 | (hash_entry->u.def.value | |
4742 | + hash_entry->u.def.section->output_offset | |
4743 | + hash_entry->u.def.section->output_section->vma)); | |
4744 | ||
c1c8c1ef | 4745 | minfo (" %pT\n", hash_entry->root.string); |
252b5132 RH |
4746 | } |
4747 | ||
f38a2680 | 4748 | return true; |
252b5132 RH |
4749 | } |
4750 | ||
02688209 TG |
4751 | static int |
4752 | hash_entry_addr_cmp (const void *a, const void *b) | |
4753 | { | |
4754 | const struct bfd_link_hash_entry *l = *(const struct bfd_link_hash_entry **)a; | |
4755 | const struct bfd_link_hash_entry *r = *(const struct bfd_link_hash_entry **)b; | |
4756 | ||
4757 | if (l->u.def.value < r->u.def.value) | |
4758 | return -1; | |
4759 | else if (l->u.def.value > r->u.def.value) | |
4760 | return 1; | |
4761 | else | |
4762 | return 0; | |
4763 | } | |
4764 | ||
35835446 | 4765 | static void |
e0f6802f | 4766 | print_all_symbols (asection *sec) |
35835446 | 4767 | { |
a48931cc | 4768 | input_section_userdata_type *ud = bfd_section_userdata (sec); |
35835446 | 4769 | struct map_symbol_def *def; |
02688209 TG |
4770 | struct bfd_link_hash_entry **entries; |
4771 | unsigned int i; | |
35835446 | 4772 | |
afd7a018 AM |
4773 | if (!ud) |
4774 | return; | |
4775 | ||
35835446 | 4776 | *ud->map_symbol_def_tail = 0; |
1e0061d2 | 4777 | |
02688209 | 4778 | /* Sort the symbols by address. */ |
1e9cc1c2 | 4779 | entries = (struct bfd_link_hash_entry **) |
0aa7f586 AM |
4780 | obstack_alloc (&map_obstack, |
4781 | ud->map_symbol_def_count * sizeof (*entries)); | |
02688209 TG |
4782 | |
4783 | for (i = 0, def = ud->map_symbol_def_head; def; def = def->next, i++) | |
4784 | entries[i] = def->entry; | |
4785 | ||
4786 | qsort (entries, ud->map_symbol_def_count, sizeof (*entries), | |
4724d37e | 4787 | hash_entry_addr_cmp); |
02688209 TG |
4788 | |
4789 | /* Print the symbols. */ | |
4790 | for (i = 0; i < ud->map_symbol_def_count; i++) | |
3edf7b9f | 4791 | ldemul_print_symbol (entries[i], sec); |
02688209 TG |
4792 | |
4793 | obstack_free (&map_obstack, entries); | |
35835446 JR |
4794 | } |
4795 | ||
252b5132 RH |
4796 | /* Print information about an input section to the map file. */ |
4797 | ||
4798 | static void | |
f38a2680 | 4799 | print_input_section (asection *i, bool is_discarded) |
252b5132 | 4800 | { |
eea6121a | 4801 | bfd_size_type size = i->size; |
abe6ac95 AM |
4802 | int len; |
4803 | bfd_vma addr; | |
e5caa5e0 | 4804 | |
61826503 | 4805 | init_opb (i); |
4d4920ec | 4806 | |
abe6ac95 AM |
4807 | print_space (); |
4808 | minfo ("%s", i->name); | |
252b5132 | 4809 | |
abe6ac95 AM |
4810 | len = 1 + strlen (i->name); |
4811 | if (len >= SECTION_NAME_MAP_LENGTH - 1) | |
4812 | { | |
4813 | print_nl (); | |
4814 | len = 0; | |
4815 | } | |
4816 | while (len < SECTION_NAME_MAP_LENGTH) | |
4817 | { | |
57ceae94 | 4818 | print_space (); |
abe6ac95 AM |
4819 | ++len; |
4820 | } | |
252b5132 | 4821 | |
f13a99db AM |
4822 | if (i->output_section != NULL |
4823 | && i->output_section->owner == link_info.output_bfd) | |
abe6ac95 AM |
4824 | addr = i->output_section->vma + i->output_offset; |
4825 | else | |
4826 | { | |
4827 | addr = print_dot; | |
d64703c6 TG |
4828 | if (!is_discarded) |
4829 | size = 0; | |
abe6ac95 | 4830 | } |
252b5132 | 4831 | |
b0a7971a | 4832 | minfo ("0x%V %W %pB\n", addr, TO_ADDR (size), i->owner); |
252b5132 | 4833 | |
abe6ac95 AM |
4834 | if (size != i->rawsize && i->rawsize != 0) |
4835 | { | |
4836 | len = SECTION_NAME_MAP_LENGTH + 3; | |
252b5132 | 4837 | #ifdef BFD64 |
abe6ac95 | 4838 | len += 16; |
252b5132 | 4839 | #else |
abe6ac95 | 4840 | len += 8; |
252b5132 | 4841 | #endif |
abe6ac95 AM |
4842 | while (len > 0) |
4843 | { | |
4844 | print_space (); | |
4845 | --len; | |
57ceae94 AM |
4846 | } |
4847 | ||
b0a7971a | 4848 | minfo (_("%W (size before relaxing)\n"), TO_ADDR (i->rawsize)); |
abe6ac95 | 4849 | } |
252b5132 | 4850 | |
f13a99db AM |
4851 | if (i->output_section != NULL |
4852 | && i->output_section->owner == link_info.output_bfd) | |
abe6ac95 | 4853 | { |
c0f00686 | 4854 | if (link_info.reduce_memory_overheads) |
3edf7b9f | 4855 | bfd_link_hash_traverse (link_info.hash, ldemul_print_symbol, i); |
abe6ac95 AM |
4856 | else |
4857 | print_all_symbols (i); | |
4858 | ||
5590fba9 NC |
4859 | /* Update print_dot, but make sure that we do not move it |
4860 | backwards - this could happen if we have overlays and a | |
4861 | later overlay is shorter than an earier one. */ | |
4862 | if (addr + TO_ADDR (size) > print_dot) | |
4863 | print_dot = addr + TO_ADDR (size); | |
252b5132 RH |
4864 | } |
4865 | } | |
4866 | ||
4867 | static void | |
1579bae1 | 4868 | print_fill_statement (lang_fill_statement_type *fill) |
252b5132 | 4869 | { |
2c382fb6 AM |
4870 | size_t size; |
4871 | unsigned char *p; | |
4872 | fputs (" FILL mask 0x", config.map_file); | |
4873 | for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--) | |
4874 | fprintf (config.map_file, "%02x", *p); | |
4875 | fputs ("\n", config.map_file); | |
252b5132 RH |
4876 | } |
4877 | ||
4878 | static void | |
1579bae1 | 4879 | print_data_statement (lang_data_statement_type *data) |
252b5132 RH |
4880 | { |
4881 | int i; | |
4882 | bfd_vma addr; | |
4883 | bfd_size_type size; | |
4884 | const char *name; | |
4885 | ||
61826503 | 4886 | init_opb (data->output_section); |
252b5132 RH |
4887 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
4888 | print_space (); | |
4889 | ||
7fabd029 | 4890 | addr = data->output_offset; |
252b5132 RH |
4891 | if (data->output_section != NULL) |
4892 | addr += data->output_section->vma; | |
4893 | ||
4894 | switch (data->type) | |
4895 | { | |
4896 | default: | |
4897 | abort (); | |
4898 | case BYTE: | |
4899 | size = BYTE_SIZE; | |
4900 | name = "BYTE"; | |
4901 | break; | |
4902 | case SHORT: | |
4903 | size = SHORT_SIZE; | |
4904 | name = "SHORT"; | |
4905 | break; | |
4906 | case LONG: | |
4907 | size = LONG_SIZE; | |
4908 | name = "LONG"; | |
4909 | break; | |
4910 | case QUAD: | |
4911 | size = QUAD_SIZE; | |
4912 | name = "QUAD"; | |
4913 | break; | |
4914 | case SQUAD: | |
4915 | size = QUAD_SIZE; | |
4916 | name = "SQUAD"; | |
4917 | break; | |
4918 | } | |
4919 | ||
953dd97e DG |
4920 | if (size < TO_SIZE ((unsigned) 1)) |
4921 | size = TO_SIZE ((unsigned) 1); | |
4922 | minfo ("0x%V %W %s 0x%v", addr, TO_ADDR (size), name, data->value); | |
252b5132 RH |
4923 | |
4924 | if (data->exp->type.node_class != etree_value) | |
4925 | { | |
4926 | print_space (); | |
4927 | exp_print_tree (data->exp); | |
4928 | } | |
4929 | ||
4930 | print_nl (); | |
4931 | ||
e5caa5e0 | 4932 | print_dot = addr + TO_ADDR (size); |
252b5132 RH |
4933 | } |
4934 | ||
4935 | /* Print an address statement. These are generated by options like | |
4936 | -Ttext. */ | |
4937 | ||
4938 | static void | |
1579bae1 | 4939 | print_address_statement (lang_address_statement_type *address) |
252b5132 RH |
4940 | { |
4941 | minfo (_("Address of section %s set to "), address->section_name); | |
4942 | exp_print_tree (address->address); | |
4943 | print_nl (); | |
4944 | } | |
4945 | ||
4946 | /* Print a reloc statement. */ | |
4947 | ||
4948 | static void | |
1579bae1 | 4949 | print_reloc_statement (lang_reloc_statement_type *reloc) |
252b5132 RH |
4950 | { |
4951 | int i; | |
4952 | bfd_vma addr; | |
4953 | bfd_size_type size; | |
4954 | ||
61826503 | 4955 | init_opb (reloc->output_section); |
252b5132 RH |
4956 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
4957 | print_space (); | |
4958 | ||
7fabd029 | 4959 | addr = reloc->output_offset; |
252b5132 RH |
4960 | if (reloc->output_section != NULL) |
4961 | addr += reloc->output_section->vma; | |
4962 | ||
4963 | size = bfd_get_reloc_size (reloc->howto); | |
4964 | ||
953dd97e | 4965 | minfo ("0x%V %W RELOC %s ", addr, TO_ADDR (size), reloc->howto->name); |
252b5132 RH |
4966 | |
4967 | if (reloc->name != NULL) | |
4968 | minfo ("%s+", reloc->name); | |
4969 | else | |
4970 | minfo ("%s+", reloc->section->name); | |
4971 | ||
4972 | exp_print_tree (reloc->addend_exp); | |
4973 | ||
4974 | print_nl (); | |
4975 | ||
e5caa5e0 | 4976 | print_dot = addr + TO_ADDR (size); |
5f992e62 | 4977 | } |
252b5132 RH |
4978 | |
4979 | static void | |
1579bae1 | 4980 | print_padding_statement (lang_padding_statement_type *s) |
252b5132 RH |
4981 | { |
4982 | int len; | |
4983 | bfd_vma addr; | |
4984 | ||
61826503 | 4985 | init_opb (s->output_section); |
252b5132 RH |
4986 | minfo (" *fill*"); |
4987 | ||
4988 | len = sizeof " *fill*" - 1; | |
4989 | while (len < SECTION_NAME_MAP_LENGTH) | |
4990 | { | |
4991 | print_space (); | |
4992 | ++len; | |
4993 | } | |
4994 | ||
4995 | addr = s->output_offset; | |
4996 | if (s->output_section != NULL) | |
4997 | addr += s->output_section->vma; | |
953dd97e | 4998 | minfo ("0x%V %W ", addr, TO_ADDR (s->size)); |
252b5132 | 4999 | |
2c382fb6 AM |
5000 | if (s->fill->size != 0) |
5001 | { | |
5002 | size_t size; | |
5003 | unsigned char *p; | |
5004 | for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--) | |
5005 | fprintf (config.map_file, "%02x", *p); | |
5006 | } | |
252b5132 RH |
5007 | |
5008 | print_nl (); | |
5009 | ||
e5caa5e0 | 5010 | print_dot = addr + TO_ADDR (s->size); |
252b5132 RH |
5011 | } |
5012 | ||
5013 | static void | |
1579bae1 AM |
5014 | print_wild_statement (lang_wild_statement_type *w, |
5015 | lang_output_section_statement_type *os) | |
252b5132 | 5016 | { |
b6bf44ba AM |
5017 | struct wildcard_list *sec; |
5018 | ||
252b5132 RH |
5019 | print_space (); |
5020 | ||
8f1732fc AB |
5021 | if (w->exclude_name_list) |
5022 | { | |
5023 | name_list *tmp; | |
5024 | minfo ("EXCLUDE_FILE(%s", w->exclude_name_list->name); | |
5025 | for (tmp = w->exclude_name_list->next; tmp; tmp = tmp->next) | |
6c19b93b | 5026 | minfo (" %s", tmp->name); |
8f1732fc AB |
5027 | minfo (") "); |
5028 | } | |
5029 | ||
252b5132 | 5030 | if (w->filenames_sorted) |
2b94abd4 | 5031 | minfo ("SORT_BY_NAME("); |
08da4cac | 5032 | if (w->filename != NULL) |
252b5132 RH |
5033 | minfo ("%s", w->filename); |
5034 | else | |
5035 | minfo ("*"); | |
5036 | if (w->filenames_sorted) | |
5037 | minfo (")"); | |
5038 | ||
5039 | minfo ("("); | |
b6bf44ba AM |
5040 | for (sec = w->section_list; sec; sec = sec->next) |
5041 | { | |
2b94abd4 AB |
5042 | int closing_paren = 0; |
5043 | ||
5044 | switch (sec->spec.sorted) | |
6c19b93b AM |
5045 | { |
5046 | case none: | |
5047 | break; | |
5048 | ||
5049 | case by_name: | |
5050 | minfo ("SORT_BY_NAME("); | |
5051 | closing_paren = 1; | |
5052 | break; | |
5053 | ||
5054 | case by_alignment: | |
5055 | minfo ("SORT_BY_ALIGNMENT("); | |
5056 | closing_paren = 1; | |
5057 | break; | |
5058 | ||
5059 | case by_name_alignment: | |
5060 | minfo ("SORT_BY_NAME(SORT_BY_ALIGNMENT("); | |
5061 | closing_paren = 2; | |
5062 | break; | |
5063 | ||
5064 | case by_alignment_name: | |
5065 | minfo ("SORT_BY_ALIGNMENT(SORT_BY_NAME("); | |
5066 | closing_paren = 2; | |
5067 | break; | |
5068 | ||
5069 | case by_none: | |
5070 | minfo ("SORT_NONE("); | |
5071 | closing_paren = 1; | |
5072 | break; | |
5073 | ||
5074 | case by_init_priority: | |
5075 | minfo ("SORT_BY_INIT_PRIORITY("); | |
5076 | closing_paren = 1; | |
5077 | break; | |
5078 | } | |
2b94abd4 | 5079 | |
b6bf44ba AM |
5080 | if (sec->spec.exclude_name_list != NULL) |
5081 | { | |
5082 | name_list *tmp; | |
34786259 | 5083 | minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name); |
b6bf44ba | 5084 | for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next) |
34786259 AM |
5085 | minfo (" %s", tmp->name); |
5086 | minfo (") "); | |
b6bf44ba AM |
5087 | } |
5088 | if (sec->spec.name != NULL) | |
5089 | minfo ("%s", sec->spec.name); | |
5090 | else | |
5091 | minfo ("*"); | |
2b94abd4 | 5092 | for (;closing_paren > 0; closing_paren--) |
6c19b93b | 5093 | minfo (")"); |
34786259 AM |
5094 | if (sec->next) |
5095 | minfo (" "); | |
b6bf44ba | 5096 | } |
252b5132 RH |
5097 | minfo (")"); |
5098 | ||
5099 | print_nl (); | |
5100 | ||
5101 | print_statement_list (w->children.head, os); | |
5102 | } | |
5103 | ||
5104 | /* Print a group statement. */ | |
5105 | ||
5106 | static void | |
1579bae1 AM |
5107 | print_group (lang_group_statement_type *s, |
5108 | lang_output_section_statement_type *os) | |
252b5132 RH |
5109 | { |
5110 | fprintf (config.map_file, "START GROUP\n"); | |
5111 | print_statement_list (s->children.head, os); | |
5112 | fprintf (config.map_file, "END GROUP\n"); | |
5113 | } | |
5114 | ||
5115 | /* Print the list of statements in S. | |
5116 | This can be called for any statement type. */ | |
5117 | ||
5118 | static void | |
1579bae1 AM |
5119 | print_statement_list (lang_statement_union_type *s, |
5120 | lang_output_section_statement_type *os) | |
252b5132 RH |
5121 | { |
5122 | while (s != NULL) | |
5123 | { | |
5124 | print_statement (s, os); | |
bba1a0c0 | 5125 | s = s->header.next; |
252b5132 RH |
5126 | } |
5127 | } | |
5128 | ||
5129 | /* Print the first statement in statement list S. | |
5130 | This can be called for any statement type. */ | |
5131 | ||
5132 | static void | |
1579bae1 AM |
5133 | print_statement (lang_statement_union_type *s, |
5134 | lang_output_section_statement_type *os) | |
252b5132 RH |
5135 | { |
5136 | switch (s->header.type) | |
5137 | { | |
5138 | default: | |
5139 | fprintf (config.map_file, _("Fail with %d\n"), s->header.type); | |
5140 | FAIL (); | |
5141 | break; | |
5142 | case lang_constructors_statement_enum: | |
5143 | if (constructor_list.head != NULL) | |
5144 | { | |
5145 | if (constructors_sorted) | |
5146 | minfo (" SORT (CONSTRUCTORS)\n"); | |
5147 | else | |
5148 | minfo (" CONSTRUCTORS\n"); | |
5149 | print_statement_list (constructor_list.head, os); | |
5150 | } | |
5151 | break; | |
5152 | case lang_wild_statement_enum: | |
5153 | print_wild_statement (&s->wild_statement, os); | |
5154 | break; | |
5155 | case lang_address_statement_enum: | |
5156 | print_address_statement (&s->address_statement); | |
5157 | break; | |
5158 | case lang_object_symbols_statement_enum: | |
5159 | minfo (" CREATE_OBJECT_SYMBOLS\n"); | |
5160 | break; | |
5161 | case lang_fill_statement_enum: | |
5162 | print_fill_statement (&s->fill_statement); | |
5163 | break; | |
5164 | case lang_data_statement_enum: | |
5165 | print_data_statement (&s->data_statement); | |
5166 | break; | |
5167 | case lang_reloc_statement_enum: | |
5168 | print_reloc_statement (&s->reloc_statement); | |
5169 | break; | |
5170 | case lang_input_section_enum: | |
f38a2680 | 5171 | print_input_section (s->input_section.section, false); |
252b5132 RH |
5172 | break; |
5173 | case lang_padding_statement_enum: | |
5174 | print_padding_statement (&s->padding_statement); | |
5175 | break; | |
5176 | case lang_output_section_statement_enum: | |
5177 | print_output_section_statement (&s->output_section_statement); | |
5178 | break; | |
5179 | case lang_assignment_statement_enum: | |
5180 | print_assignment (&s->assignment_statement, os); | |
5181 | break; | |
5182 | case lang_target_statement_enum: | |
5183 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); | |
5184 | break; | |
5185 | case lang_output_statement_enum: | |
5186 | minfo ("OUTPUT(%s", s->output_statement.name); | |
5187 | if (output_target != NULL) | |
5188 | minfo (" %s", output_target); | |
5189 | minfo (")\n"); | |
5190 | break; | |
5191 | case lang_input_statement_enum: | |
5192 | print_input_statement (&s->input_statement); | |
5193 | break; | |
5194 | case lang_group_statement_enum: | |
5195 | print_group (&s->group_statement, os); | |
5196 | break; | |
53d25da6 AM |
5197 | case lang_insert_statement_enum: |
5198 | minfo ("INSERT %s %s\n", | |
5199 | s->insert_statement.is_before ? "BEFORE" : "AFTER", | |
5200 | s->insert_statement.where); | |
5201 | break; | |
252b5132 RH |
5202 | } |
5203 | } | |
5204 | ||
5205 | static void | |
1579bae1 | 5206 | print_statements (void) |
252b5132 RH |
5207 | { |
5208 | print_statement_list (statement_list.head, abs_output_section); | |
5209 | } | |
5210 | ||
5211 | /* Print the first N statements in statement list S to STDERR. | |
5212 | If N == 0, nothing is printed. | |
5213 | If N < 0, the entire list is printed. | |
5214 | Intended to be called from GDB. */ | |
5215 | ||
5216 | void | |
1579bae1 | 5217 | dprint_statement (lang_statement_union_type *s, int n) |
252b5132 RH |
5218 | { |
5219 | FILE *map_save = config.map_file; | |
5220 | ||
5221 | config.map_file = stderr; | |
5222 | ||
5223 | if (n < 0) | |
5224 | print_statement_list (s, abs_output_section); | |
5225 | else | |
5226 | { | |
5227 | while (s && --n >= 0) | |
5228 | { | |
5229 | print_statement (s, abs_output_section); | |
bba1a0c0 | 5230 | s = s->header.next; |
252b5132 RH |
5231 | } |
5232 | } | |
5233 | ||
5234 | config.map_file = map_save; | |
5235 | } | |
5236 | ||
b3327aad | 5237 | static void |
1579bae1 AM |
5238 | insert_pad (lang_statement_union_type **ptr, |
5239 | fill_type *fill, | |
1a69ff95 | 5240 | bfd_size_type alignment_needed, |
1579bae1 AM |
5241 | asection *output_section, |
5242 | bfd_vma dot) | |
252b5132 | 5243 | { |
b7761f11 | 5244 | static fill_type zero_fill; |
e9ee469a | 5245 | lang_statement_union_type *pad = NULL; |
b3327aad | 5246 | |
e9ee469a AM |
5247 | if (ptr != &statement_list.head) |
5248 | pad = ((lang_statement_union_type *) | |
5249 | ((char *) ptr - offsetof (lang_statement_union_type, header.next))); | |
5250 | if (pad != NULL | |
5251 | && pad->header.type == lang_padding_statement_enum | |
5252 | && pad->padding_statement.output_section == output_section) | |
5253 | { | |
5254 | /* Use the existing pad statement. */ | |
5255 | } | |
5256 | else if ((pad = *ptr) != NULL | |
906e58ca NC |
5257 | && pad->header.type == lang_padding_statement_enum |
5258 | && pad->padding_statement.output_section == output_section) | |
252b5132 | 5259 | { |
e9ee469a | 5260 | /* Use the existing pad statement. */ |
252b5132 | 5261 | } |
b3327aad | 5262 | else |
252b5132 | 5263 | { |
b3327aad | 5264 | /* Make a new padding statement, linked into existing chain. */ |
988de25b | 5265 | pad = stat_alloc (sizeof (lang_padding_statement_type)); |
b3327aad AM |
5266 | pad->header.next = *ptr; |
5267 | *ptr = pad; | |
5268 | pad->header.type = lang_padding_statement_enum; | |
5269 | pad->padding_statement.output_section = output_section; | |
1579bae1 | 5270 | if (fill == NULL) |
2c382fb6 | 5271 | fill = &zero_fill; |
b3327aad | 5272 | pad->padding_statement.fill = fill; |
252b5132 | 5273 | } |
b3327aad AM |
5274 | pad->padding_statement.output_offset = dot - output_section->vma; |
5275 | pad->padding_statement.size = alignment_needed; | |
8772de11 MR |
5276 | if (!(output_section->flags & SEC_FIXED_SIZE)) |
5277 | output_section->size = TO_SIZE (dot + TO_ADDR (alignment_needed) | |
5278 | - output_section->vma); | |
252b5132 RH |
5279 | } |
5280 | ||
08da4cac KH |
5281 | /* Work out how much this section will move the dot point. */ |
5282 | ||
252b5132 | 5283 | static bfd_vma |
6feb9908 AM |
5284 | size_input_section |
5285 | (lang_statement_union_type **this_ptr, | |
5286 | lang_output_section_statement_type *output_section_statement, | |
5287 | fill_type *fill, | |
f38a2680 | 5288 | bool *removed, |
6feb9908 | 5289 | bfd_vma dot) |
252b5132 RH |
5290 | { |
5291 | lang_input_section_type *is = &((*this_ptr)->input_section); | |
5292 | asection *i = is->section; | |
93d1b056 | 5293 | asection *o = output_section_statement->bfd_section; |
abf874aa CL |
5294 | *removed = 0; |
5295 | ||
5296 | if (link_info.non_contiguous_regions) | |
5297 | { | |
5298 | /* If the input section I has already been successfully assigned | |
5299 | to an output section other than O, don't bother with it and | |
5300 | let the caller remove it from the list. Keep processing in | |
5301 | case we have already handled O, because the repeated passes | |
5302 | have reinitialized its size. */ | |
5303 | if (i->already_assigned && i->already_assigned != o) | |
5304 | { | |
5305 | *removed = 1; | |
5306 | return dot; | |
5307 | } | |
5308 | } | |
252b5132 | 5309 | |
93d1b056 AM |
5310 | if (i->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
5311 | i->output_offset = i->vma - o->vma; | |
9ef7906f IK |
5312 | else if (((i->flags & SEC_EXCLUDE) != 0) |
5313 | || output_section_statement->ignored) | |
93d1b056 AM |
5314 | i->output_offset = dot - o->vma; |
5315 | else | |
252b5132 | 5316 | { |
1a69ff95 | 5317 | bfd_size_type alignment_needed; |
b3327aad AM |
5318 | |
5319 | /* Align this section first to the input sections requirement, | |
5320 | then to the output section's requirement. If this alignment | |
5321 | is greater than any seen before, then record it too. Perform | |
5322 | the alignment by inserting a magic 'padding' statement. */ | |
5323 | ||
3d9c8f6b AM |
5324 | if (output_section_statement->subsection_alignment != NULL) |
5325 | i->alignment_power | |
5326 | = exp_get_power (output_section_statement->subsection_alignment, | |
5327 | "subsection alignment"); | |
b3327aad | 5328 | |
b3327aad AM |
5329 | if (o->alignment_power < i->alignment_power) |
5330 | o->alignment_power = i->alignment_power; | |
252b5132 | 5331 | |
b3327aad AM |
5332 | alignment_needed = align_power (dot, i->alignment_power) - dot; |
5333 | ||
5334 | if (alignment_needed != 0) | |
5335 | { | |
e5caa5e0 | 5336 | insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot); |
b3327aad AM |
5337 | dot += alignment_needed; |
5338 | } | |
252b5132 | 5339 | |
abf874aa CL |
5340 | if (link_info.non_contiguous_regions) |
5341 | { | |
5342 | /* If I would overflow O, let the caller remove I from the | |
5343 | list. */ | |
5344 | if (output_section_statement->region) | |
5345 | { | |
5346 | bfd_vma end = output_section_statement->region->origin | |
5347 | + output_section_statement->region->length; | |
5348 | ||
5349 | if (dot + TO_ADDR (i->size) > end) | |
5350 | { | |
5351 | if (i->flags & SEC_LINKER_CREATED) | |
53215f21 CL |
5352 | einfo (_("%F%P: Output section '%s' not large enough for the " |
5353 | "linker-created stubs section '%s'.\n"), | |
5354 | i->output_section->name, i->name); | |
abf874aa CL |
5355 | |
5356 | if (i->rawsize && i->rawsize != i->size) | |
53215f21 CL |
5357 | einfo (_("%F%P: Relaxation not supported with " |
5358 | "--enable-non-contiguous-regions (section '%s' " | |
5359 | "would overflow '%s' after it changed size).\n"), | |
5360 | i->name, i->output_section->name); | |
abf874aa CL |
5361 | |
5362 | *removed = 1; | |
5363 | dot = end; | |
5364 | i->output_section = NULL; | |
5365 | return dot; | |
5366 | } | |
5367 | } | |
5368 | } | |
5369 | ||
08da4cac | 5370 | /* Remember where in the output section this input section goes. */ |
b3327aad | 5371 | i->output_offset = dot - o->vma; |
252b5132 | 5372 | |
08da4cac | 5373 | /* Mark how big the output section must be to contain this now. */ |
eea6121a | 5374 | dot += TO_ADDR (i->size); |
8772de11 MR |
5375 | if (!(o->flags & SEC_FIXED_SIZE)) |
5376 | o->size = TO_SIZE (dot - o->vma); | |
abf874aa CL |
5377 | |
5378 | if (link_info.non_contiguous_regions) | |
5379 | { | |
5380 | /* Record that I was successfully assigned to O, and update | |
5381 | its actual output section too. */ | |
5382 | i->already_assigned = o; | |
5383 | i->output_section = o; | |
5384 | } | |
252b5132 | 5385 | } |
252b5132 RH |
5386 | |
5387 | return dot; | |
5388 | } | |
5389 | ||
a87dd97a AM |
5390 | struct check_sec |
5391 | { | |
5392 | asection *sec; | |
f38a2680 | 5393 | bool warned; |
a87dd97a AM |
5394 | }; |
5395 | ||
5daa8fe7 L |
5396 | static int |
5397 | sort_sections_by_lma (const void *arg1, const void *arg2) | |
5398 | { | |
a87dd97a AM |
5399 | const asection *sec1 = ((const struct check_sec *) arg1)->sec; |
5400 | const asection *sec2 = ((const struct check_sec *) arg2)->sec; | |
5401 | ||
5402 | if (sec1->lma < sec2->lma) | |
5403 | return -1; | |
5404 | else if (sec1->lma > sec2->lma) | |
5405 | return 1; | |
5406 | else if (sec1->id < sec2->id) | |
5407 | return -1; | |
5408 | else if (sec1->id > sec2->id) | |
5409 | return 1; | |
5410 | ||
5411 | return 0; | |
5412 | } | |
5413 | ||
5414 | static int | |
5415 | sort_sections_by_vma (const void *arg1, const void *arg2) | |
5416 | { | |
5417 | const asection *sec1 = ((const struct check_sec *) arg1)->sec; | |
5418 | const asection *sec2 = ((const struct check_sec *) arg2)->sec; | |
5daa8fe7 | 5419 | |
a87dd97a | 5420 | if (sec1->vma < sec2->vma) |
5daa8fe7 | 5421 | return -1; |
a87dd97a | 5422 | else if (sec1->vma > sec2->vma) |
5daa8fe7 | 5423 | return 1; |
7f6a71ff JM |
5424 | else if (sec1->id < sec2->id) |
5425 | return -1; | |
5426 | else if (sec1->id > sec2->id) | |
5427 | return 1; | |
5daa8fe7 L |
5428 | |
5429 | return 0; | |
5430 | } | |
5431 | ||
2e4a7aea AM |
5432 | #define IS_TBSS(s) \ |
5433 | ((s->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == SEC_THREAD_LOCAL) | |
5434 | ||
eea6121a | 5435 | #define IGNORE_SECTION(s) \ |
2e4a7aea | 5436 | ((s->flags & SEC_ALLOC) == 0 || IS_TBSS (s)) |
d1778b88 | 5437 | |
252b5132 | 5438 | /* Check to see if any allocated sections overlap with other allocated |
afd7a018 | 5439 | sections. This can happen if a linker script specifies the output |
20e56351 DJ |
5440 | section addresses of the two sections. Also check whether any memory |
5441 | region has overflowed. */ | |
08da4cac | 5442 | |
252b5132 | 5443 | static void |
1579bae1 | 5444 | lang_check_section_addresses (void) |
252b5132 | 5445 | { |
f4427a75 | 5446 | asection *s, *p; |
a87dd97a AM |
5447 | struct check_sec *sections; |
5448 | size_t i, count; | |
d40e34db | 5449 | bfd_vma addr_mask; |
5daa8fe7 L |
5450 | bfd_vma s_start; |
5451 | bfd_vma s_end; | |
a87dd97a AM |
5452 | bfd_vma p_start = 0; |
5453 | bfd_vma p_end = 0; | |
20e56351 | 5454 | lang_memory_region_type *m; |
f38a2680 | 5455 | bool overlays; |
5daa8fe7 | 5456 | |
21701718 | 5457 | /* Detect address space overflow on allocated sections. */ |
d40e34db TG |
5458 | addr_mask = ((bfd_vma) 1 << |
5459 | (bfd_arch_bits_per_address (link_info.output_bfd) - 1)) - 1; | |
5460 | addr_mask = (addr_mask << 1) + 1; | |
5461 | for (s = link_info.output_bfd->sections; s != NULL; s = s->next) | |
21701718 TG |
5462 | if ((s->flags & SEC_ALLOC) != 0) |
5463 | { | |
5464 | s_end = (s->vma + s->size) & addr_mask; | |
5465 | if (s_end != 0 && s_end < (s->vma & addr_mask)) | |
5466 | einfo (_("%X%P: section %s VMA wraps around address space\n"), | |
5467 | s->name); | |
5468 | else | |
5469 | { | |
5470 | s_end = (s->lma + s->size) & addr_mask; | |
5471 | if (s_end != 0 && s_end < (s->lma & addr_mask)) | |
5472 | einfo (_("%X%P: section %s LMA wraps around address space\n"), | |
5473 | s->name); | |
5474 | } | |
5475 | } | |
d40e34db | 5476 | |
f13a99db | 5477 | if (bfd_count_sections (link_info.output_bfd) <= 1) |
5daa8fe7 L |
5478 | return; |
5479 | ||
a87dd97a AM |
5480 | count = bfd_count_sections (link_info.output_bfd); |
5481 | sections = XNEWVEC (struct check_sec, count); | |
252b5132 RH |
5482 | |
5483 | /* Scan all sections in the output list. */ | |
5daa8fe7 | 5484 | count = 0; |
f13a99db | 5485 | for (s = link_info.output_bfd->sections; s != NULL; s = s->next) |
33275c22 | 5486 | { |
a87dd97a | 5487 | if (IGNORE_SECTION (s) |
ec6d26be | 5488 | || s->size == 0) |
33275c22 | 5489 | continue; |
5f992e62 | 5490 | |
a87dd97a | 5491 | sections[count].sec = s; |
f38a2680 | 5492 | sections[count].warned = false; |
5daa8fe7 L |
5493 | count++; |
5494 | } | |
329c1c86 | 5495 | |
5daa8fe7 | 5496 | if (count <= 1) |
136a43b7 AM |
5497 | { |
5498 | free (sections); | |
5499 | return; | |
5500 | } | |
5f992e62 | 5501 | |
a87dd97a | 5502 | qsort (sections, count, sizeof (*sections), sort_sections_by_lma); |
5f992e62 | 5503 | |
136a43b7 | 5504 | /* First check section LMAs. There should be no overlap of LMAs on |
a87dd97a AM |
5505 | loadable sections, even with overlays. */ |
5506 | for (p = NULL, i = 0; i < count; i++) | |
5daa8fe7 | 5507 | { |
a87dd97a | 5508 | s = sections[i].sec; |
61826503 | 5509 | init_opb (s); |
a87dd97a AM |
5510 | if ((s->flags & SEC_LOAD) != 0) |
5511 | { | |
5512 | s_start = s->lma; | |
5513 | s_end = s_start + TO_ADDR (s->size) - 1; | |
5514 | ||
5515 | /* Look for an overlap. We have sorted sections by lma, so | |
5516 | we know that s_start >= p_start. Besides the obvious | |
5517 | case of overlap when the current section starts before | |
5518 | the previous one ends, we also must have overlap if the | |
5519 | previous section wraps around the address space. */ | |
5520 | if (p != NULL | |
5521 | && (s_start <= p_end | |
5522 | || p_end < p_start)) | |
5523 | { | |
5524 | einfo (_("%X%P: section %s LMA [%V,%V]" | |
5525 | " overlaps section %s LMA [%V,%V]\n"), | |
5526 | s->name, s_start, s_end, p->name, p_start, p_end); | |
f38a2680 | 5527 | sections[i].warned = true; |
a87dd97a AM |
5528 | } |
5529 | p = s; | |
5530 | p_start = s_start; | |
5531 | p_end = s_end; | |
5532 | } | |
5533 | } | |
5534 | ||
136a43b7 AM |
5535 | /* If any non-zero size allocated section (excluding tbss) starts at |
5536 | exactly the same VMA as another such section, then we have | |
5537 | overlays. Overlays generated by the OVERLAY keyword will have | |
5538 | this property. It is possible to intentionally generate overlays | |
5539 | that fail this test, but it would be unusual. */ | |
5540 | qsort (sections, count, sizeof (*sections), sort_sections_by_vma); | |
f38a2680 | 5541 | overlays = false; |
136a43b7 AM |
5542 | p_start = sections[0].sec->vma; |
5543 | for (i = 1; i < count; i++) | |
a87dd97a | 5544 | { |
136a43b7 AM |
5545 | s_start = sections[i].sec->vma; |
5546 | if (p_start == s_start) | |
5547 | { | |
f38a2680 | 5548 | overlays = true; |
136a43b7 AM |
5549 | break; |
5550 | } | |
5551 | p_start = s_start; | |
5552 | } | |
a87dd97a | 5553 | |
136a43b7 AM |
5554 | /* Now check section VMAs if no overlays were detected. */ |
5555 | if (!overlays) | |
5556 | { | |
a87dd97a AM |
5557 | for (p = NULL, i = 0; i < count; i++) |
5558 | { | |
5559 | s = sections[i].sec; | |
61826503 | 5560 | init_opb (s); |
a87dd97a AM |
5561 | s_start = s->vma; |
5562 | s_end = s_start + TO_ADDR (s->size) - 1; | |
5563 | ||
5564 | if (p != NULL | |
5565 | && !sections[i].warned | |
5566 | && (s_start <= p_end | |
5567 | || p_end < p_start)) | |
5568 | einfo (_("%X%P: section %s VMA [%V,%V]" | |
5569 | " overlaps section %s VMA [%V,%V]\n"), | |
5570 | s->name, s_start, s_end, p->name, p_start, p_end); | |
5571 | p = s; | |
5572 | p_start = s_start; | |
5573 | p_end = s_end; | |
5574 | } | |
33275c22 | 5575 | } |
5daa8fe7 L |
5576 | |
5577 | free (sections); | |
20e56351 DJ |
5578 | |
5579 | /* If any memory region has overflowed, report by how much. | |
5580 | We do not issue this diagnostic for regions that had sections | |
5581 | explicitly placed outside their bounds; os_region_check's | |
5582 | diagnostics are adequate for that case. | |
5583 | ||
5584 | FIXME: It is conceivable that m->current - (m->origin + m->length) | |
5585 | might overflow a 32-bit integer. There is, alas, no way to print | |
5586 | a bfd_vma quantity in decimal. */ | |
5587 | for (m = lang_memory_region_list; m; m = m->next) | |
5588 | if (m->had_full_message) | |
992a06ee AM |
5589 | { |
5590 | unsigned long over = m->current - (m->origin + m->length); | |
5591 | einfo (ngettext ("%X%P: region `%s' overflowed by %lu byte\n", | |
5592 | "%X%P: region `%s' overflowed by %lu bytes\n", | |
5593 | over), | |
5594 | m->name_list.name, over); | |
5595 | } | |
252b5132 RH |
5596 | } |
5597 | ||
562d3460 TW |
5598 | /* Make sure the new address is within the region. We explicitly permit the |
5599 | current address to be at the exact end of the region when the address is | |
5600 | non-zero, in case the region is at the end of addressable memory and the | |
5f992e62 | 5601 | calculation wraps around. */ |
562d3460 TW |
5602 | |
5603 | static void | |
1579bae1 | 5604 | os_region_check (lang_output_section_statement_type *os, |
6bdafbeb | 5605 | lang_memory_region_type *region, |
1579bae1 | 5606 | etree_type *tree, |
91d6fa6a | 5607 | bfd_vma rbase) |
562d3460 TW |
5608 | { |
5609 | if ((region->current < region->origin | |
5610 | || (region->current - region->origin > region->length)) | |
5611 | && ((region->current != region->origin + region->length) | |
91d6fa6a | 5612 | || rbase == 0)) |
562d3460 | 5613 | { |
1579bae1 | 5614 | if (tree != NULL) |
b7a26f91 | 5615 | { |
871b3ab2 | 5616 | einfo (_("%X%P: address 0x%v of %pB section `%s'" |
4a93e180 | 5617 | " is not within region `%s'\n"), |
b7a26f91 KH |
5618 | region->current, |
5619 | os->bfd_section->owner, | |
5620 | os->bfd_section->name, | |
4a93e180 | 5621 | region->name_list.name); |
b7a26f91 | 5622 | } |
20e56351 | 5623 | else if (!region->had_full_message) |
b7a26f91 | 5624 | { |
f38a2680 | 5625 | region->had_full_message = true; |
20e56351 | 5626 | |
871b3ab2 | 5627 | einfo (_("%X%P: %pB section `%s' will not fit in region `%s'\n"), |
b7a26f91 | 5628 | os->bfd_section->owner, |
20e56351 | 5629 | os->bfd_section->name, |
4a93e180 | 5630 | region->name_list.name); |
b7a26f91 | 5631 | } |
562d3460 TW |
5632 | } |
5633 | } | |
5634 | ||
ed1794ee L |
5635 | static void |
5636 | ldlang_check_relro_region (lang_statement_union_type *s, | |
5637 | seg_align_type *seg) | |
5638 | { | |
5639 | if (seg->relro == exp_seg_relro_start) | |
5640 | { | |
5641 | if (!seg->relro_start_stat) | |
5642 | seg->relro_start_stat = s; | |
5643 | else | |
5644 | { | |
5645 | ASSERT (seg->relro_start_stat == s); | |
5646 | } | |
5647 | } | |
5648 | else if (seg->relro == exp_seg_relro_end) | |
5649 | { | |
5650 | if (!seg->relro_end_stat) | |
5651 | seg->relro_end_stat = s; | |
5652 | else | |
5653 | { | |
5654 | ASSERT (seg->relro_end_stat == s); | |
5655 | } | |
5656 | } | |
5657 | } | |
5658 | ||
252b5132 RH |
5659 | /* Set the sizes for all the output sections. */ |
5660 | ||
2d20f7bf | 5661 | static bfd_vma |
1579bae1 | 5662 | lang_size_sections_1 |
e535e147 | 5663 | (lang_statement_union_type **prev, |
1579bae1 | 5664 | lang_output_section_statement_type *output_section_statement, |
1579bae1 AM |
5665 | fill_type *fill, |
5666 | bfd_vma dot, | |
f38a2680 AM |
5667 | bool *relax, |
5668 | bool check_regions) | |
252b5132 | 5669 | { |
e535e147 | 5670 | lang_statement_union_type *s; |
abf874aa | 5671 | lang_statement_union_type *prev_s = NULL; |
f38a2680 | 5672 | bool removed_prev_s = false; |
e535e147 | 5673 | |
252b5132 | 5674 | /* Size up the sections from their constituent parts. */ |
abf874aa | 5675 | for (s = *prev; s != NULL; prev_s = s, s = s->header.next) |
252b5132 | 5676 | { |
f38a2680 | 5677 | bool removed = false; |
abf874aa | 5678 | |
252b5132 RH |
5679 | switch (s->header.type) |
5680 | { | |
5681 | case lang_output_section_statement_enum: | |
5682 | { | |
13075d04 | 5683 | bfd_vma newdot, after, dotdelta; |
d1778b88 | 5684 | lang_output_section_statement_type *os; |
cde9e0be | 5685 | lang_memory_region_type *r; |
c5b0a9ef | 5686 | int section_alignment = 0; |
252b5132 | 5687 | |
d1778b88 | 5688 | os = &s->output_section_statement; |
61826503 | 5689 | init_opb (os->bfd_section); |
8658f989 AM |
5690 | if (os->constraint == -1) |
5691 | break; | |
5692 | ||
fd68d03d AM |
5693 | /* FIXME: We shouldn't need to zero section vmas for ld -r |
5694 | here, in lang_insert_orphan, or in the default linker scripts. | |
5695 | This is covering for coff backend linker bugs. See PR6945. */ | |
5696 | if (os->addr_tree == NULL | |
0e1862bb | 5697 | && bfd_link_relocatable (&link_info) |
fd68d03d AM |
5698 | && (bfd_get_flavour (link_info.output_bfd) |
5699 | == bfd_target_coff_flavour)) | |
eceda120 | 5700 | os->addr_tree = exp_intop (0); |
a5df8c84 AM |
5701 | if (os->addr_tree != NULL) |
5702 | { | |
f38a2680 | 5703 | os->processed_vma = false; |
a5df8c84 | 5704 | exp_fold_tree (os->addr_tree, bfd_abs_section_ptr, &dot); |
a5df8c84 | 5705 | |
3bf9618b | 5706 | if (expld.result.valid_p) |
7542af2a AM |
5707 | { |
5708 | dot = expld.result.value; | |
5709 | if (expld.result.section != NULL) | |
5710 | dot += expld.result.section->vma; | |
5711 | } | |
3bf9618b | 5712 | else if (expld.phase != lang_mark_phase_enum) |
df5f2391 | 5713 | einfo (_("%F%P:%pS: non constant or forward reference" |
a5df8c84 | 5714 | " address expression for section %s\n"), |
dab69f68 | 5715 | os->addr_tree, os->name); |
a5df8c84 AM |
5716 | } |
5717 | ||
e9ee469a | 5718 | if (os->bfd_section == NULL) |
75ff4589 | 5719 | /* This section was removed or never actually created. */ |
252b5132 RH |
5720 | break; |
5721 | ||
5722 | /* If this is a COFF shared library section, use the size and | |
5723 | address from the input section. FIXME: This is COFF | |
5724 | specific; it would be cleaner if there were some other way | |
5725 | to do this, but nothing simple comes to mind. */ | |
f13a99db AM |
5726 | if (((bfd_get_flavour (link_info.output_bfd) |
5727 | == bfd_target_ecoff_flavour) | |
5728 | || (bfd_get_flavour (link_info.output_bfd) | |
5729 | == bfd_target_coff_flavour)) | |
ebe372c1 | 5730 | && (os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) |
252b5132 | 5731 | { |
08da4cac | 5732 | asection *input; |
252b5132 RH |
5733 | |
5734 | if (os->children.head == NULL | |
bba1a0c0 | 5735 | || os->children.head->header.next != NULL |
6feb9908 AM |
5736 | || (os->children.head->header.type |
5737 | != lang_input_section_enum)) | |
df5f2391 | 5738 | einfo (_("%X%P: internal error on COFF shared library" |
6feb9908 | 5739 | " section %s\n"), os->name); |
252b5132 RH |
5740 | |
5741 | input = os->children.head->input_section.section; | |
fd361982 AM |
5742 | bfd_set_section_vma (os->bfd_section, |
5743 | bfd_section_vma (input)); | |
8772de11 MR |
5744 | if (!(os->bfd_section->flags & SEC_FIXED_SIZE)) |
5745 | os->bfd_section->size = input->size; | |
252b5132 RH |
5746 | break; |
5747 | } | |
5748 | ||
a5df8c84 | 5749 | newdot = dot; |
13075d04 | 5750 | dotdelta = 0; |
252b5132 RH |
5751 | if (bfd_is_abs_section (os->bfd_section)) |
5752 | { | |
5753 | /* No matter what happens, an abs section starts at zero. */ | |
5754 | ASSERT (os->bfd_section->vma == 0); | |
5755 | } | |
5756 | else | |
5757 | { | |
1579bae1 | 5758 | if (os->addr_tree == NULL) |
252b5132 RH |
5759 | { |
5760 | /* No address specified for this section, get one | |
5761 | from the region specification. */ | |
1579bae1 | 5762 | if (os->region == NULL |
6feb9908 | 5763 | || ((os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)) |
4a93e180 NC |
5764 | && os->region->name_list.name[0] == '*' |
5765 | && strcmp (os->region->name_list.name, | |
6feb9908 | 5766 | DEFAULT_MEMORY_REGION) == 0)) |
252b5132 RH |
5767 | { |
5768 | os->region = lang_memory_default (os->bfd_section); | |
5769 | } | |
5770 | ||
5771 | /* If a loadable section is using the default memory | |
5772 | region, and some non default memory regions were | |
66184979 | 5773 | defined, issue an error message. */ |
f0636a44 AM |
5774 | if (!os->ignored |
5775 | && !IGNORE_SECTION (os->bfd_section) | |
0e1862bb | 5776 | && !bfd_link_relocatable (&link_info) |
cf888e70 | 5777 | && check_regions |
4a93e180 | 5778 | && strcmp (os->region->name_list.name, |
6feb9908 | 5779 | DEFAULT_MEMORY_REGION) == 0 |
252b5132 | 5780 | && lang_memory_region_list != NULL |
4a93e180 | 5781 | && (strcmp (lang_memory_region_list->name_list.name, |
a747ee4d | 5782 | DEFAULT_MEMORY_REGION) != 0 |
e9ee469a | 5783 | || lang_memory_region_list->next != NULL) |
baf09cba | 5784 | && lang_sizing_iteration == 1) |
66184979 NC |
5785 | { |
5786 | /* By default this is an error rather than just a | |
5787 | warning because if we allocate the section to the | |
5788 | default memory region we can end up creating an | |
07f3b6ad KH |
5789 | excessively large binary, or even seg faulting when |
5790 | attempting to perform a negative seek. See | |
6feb9908 | 5791 | sources.redhat.com/ml/binutils/2003-04/msg00423.html |
66184979 NC |
5792 | for an example of this. This behaviour can be |
5793 | overridden by the using the --no-check-sections | |
5794 | switch. */ | |
5795 | if (command_line.check_section_addresses) | |
df5f2391 | 5796 | einfo (_("%F%P: error: no memory region specified" |
6feb9908 | 5797 | " for loadable section `%s'\n"), |
fd361982 | 5798 | bfd_section_name (os->bfd_section)); |
66184979 | 5799 | else |
6feb9908 AM |
5800 | einfo (_("%P: warning: no memory region specified" |
5801 | " for loadable section `%s'\n"), | |
fd361982 | 5802 | bfd_section_name (os->bfd_section)); |
66184979 | 5803 | } |
252b5132 | 5804 | |
e9ee469a | 5805 | newdot = os->region->current; |
c5b0a9ef | 5806 | section_alignment = os->bfd_section->alignment_power; |
252b5132 | 5807 | } |
94b50910 | 5808 | else |
3d9c8f6b AM |
5809 | section_alignment = exp_get_power (os->section_alignment, |
5810 | "section alignment"); | |
5f992e62 | 5811 | |
7270c5ed | 5812 | /* Align to what the section needs. */ |
c5b0a9ef | 5813 | if (section_alignment > 0) |
94b50910 AM |
5814 | { |
5815 | bfd_vma savedot = newdot; | |
baf09cba | 5816 | bfd_vma diff = 0; |
252b5132 | 5817 | |
baf09cba | 5818 | newdot = align_power (newdot, section_alignment); |
13075d04 | 5819 | dotdelta = newdot - savedot; |
baf09cba AM |
5820 | |
5821 | if (lang_sizing_iteration == 1) | |
5822 | diff = dotdelta; | |
5823 | else if (lang_sizing_iteration > 1) | |
92d4b13b AM |
5824 | { |
5825 | /* Only report adjustments that would change | |
5826 | alignment from what we have already reported. */ | |
5827 | diff = newdot - os->bfd_section->vma; | |
5828 | if (!(diff & (((bfd_vma) 1 << section_alignment) - 1))) | |
5829 | diff = 0; | |
5830 | } | |
baf09cba | 5831 | if (diff != 0 |
94b50910 | 5832 | && (config.warn_section_align |
baf09cba AM |
5833 | || os->addr_tree != NULL)) |
5834 | einfo (_("%P: warning: " | |
5835 | "start of section %s changed by %ld\n"), | |
5836 | os->name, (long) diff); | |
94b50910 | 5837 | } |
252b5132 | 5838 | |
fd361982 | 5839 | bfd_set_section_vma (os->bfd_section, newdot); |
5f992e62 | 5840 | |
252b5132 RH |
5841 | os->bfd_section->output_offset = 0; |
5842 | } | |
5843 | ||
e535e147 | 5844 | lang_size_sections_1 (&os->children.head, os, |
e9ee469a AM |
5845 | os->fill, newdot, relax, check_regions); |
5846 | ||
f38a2680 | 5847 | os->processed_vma = true; |
e9ee469a AM |
5848 | |
5849 | if (bfd_is_abs_section (os->bfd_section) || os->ignored) | |
2f475487 AM |
5850 | /* Except for some special linker created sections, |
5851 | no output section should change from zero size | |
5852 | after strip_excluded_output_sections. A non-zero | |
5853 | size on an ignored section indicates that some | |
5854 | input section was not sized early enough. */ | |
5855 | ASSERT (os->bfd_section->size == 0); | |
cde9e0be | 5856 | else |
e9ee469a | 5857 | { |
cde9e0be AM |
5858 | dot = os->bfd_section->vma; |
5859 | ||
5860 | /* Put the section within the requested block size, or | |
5861 | align at the block boundary. */ | |
5862 | after = ((dot | |
5863 | + TO_ADDR (os->bfd_section->size) | |
5864 | + os->block_value - 1) | |
5865 | & - (bfd_vma) os->block_value); | |
5866 | ||
8772de11 MR |
5867 | if (!(os->bfd_section->flags & SEC_FIXED_SIZE)) |
5868 | os->bfd_section->size = TO_SIZE (after | |
5869 | - os->bfd_section->vma); | |
cde9e0be AM |
5870 | } |
5871 | ||
5872 | /* Set section lma. */ | |
5873 | r = os->region; | |
5874 | if (r == NULL) | |
f38a2680 | 5875 | r = lang_memory_region_lookup (DEFAULT_MEMORY_REGION, false); |
cde9e0be AM |
5876 | |
5877 | if (os->load_base) | |
5878 | { | |
5879 | bfd_vma lma = exp_get_abs_int (os->load_base, 0, "load base"); | |
5880 | os->bfd_section->lma = lma; | |
e9ee469a | 5881 | } |
07dfcf38 | 5882 | else if (os->lma_region != NULL) |
cde9e0be AM |
5883 | { |
5884 | bfd_vma lma = os->lma_region->current; | |
e9ee469a | 5885 | |
13075d04 SH |
5886 | if (os->align_lma_with_input) |
5887 | lma += dotdelta; | |
5888 | else | |
5889 | { | |
5890 | /* When LMA_REGION is the same as REGION, align the LMA | |
5891 | as we did for the VMA, possibly including alignment | |
5892 | from the bfd section. If a different region, then | |
5893 | only align according to the value in the output | |
5894 | statement. */ | |
5895 | if (os->lma_region != os->region) | |
3d9c8f6b AM |
5896 | section_alignment = exp_get_power (os->section_alignment, |
5897 | "section alignment"); | |
13075d04 SH |
5898 | if (section_alignment > 0) |
5899 | lma = align_power (lma, section_alignment); | |
5900 | } | |
cde9e0be AM |
5901 | os->bfd_section->lma = lma; |
5902 | } | |
dc0b6aa0 AM |
5903 | else if (r->last_os != NULL |
5904 | && (os->bfd_section->flags & SEC_ALLOC) != 0) | |
cde9e0be AM |
5905 | { |
5906 | bfd_vma lma; | |
5907 | asection *last; | |
5908 | ||
5909 | last = r->last_os->output_section_statement.bfd_section; | |
dc0b6aa0 AM |
5910 | |
5911 | /* A backwards move of dot should be accompanied by | |
5912 | an explicit assignment to the section LMA (ie. | |
91eb6c46 | 5913 | os->load_base set) because backwards moves can |
dc0b6aa0 | 5914 | create overlapping LMAs. */ |
264b6205 | 5915 | if (dot < last->vma |
91eb6c46 | 5916 | && os->bfd_section->size != 0 |
ca62bc4a | 5917 | && dot + TO_ADDR (os->bfd_section->size) <= last->vma) |
dc0b6aa0 | 5918 | { |
dc0b6aa0 AM |
5919 | /* If dot moved backwards then leave lma equal to |
5920 | vma. This is the old default lma, which might | |
5921 | just happen to work when the backwards move is | |
91eb6c46 AM |
5922 | sufficiently large. Nag if this changes anything, |
5923 | so people can fix their linker scripts. */ | |
5924 | ||
5925 | if (last->vma != last->lma) | |
0aa7f586 AM |
5926 | einfo (_("%P: warning: dot moved backwards " |
5927 | "before `%s'\n"), os->name); | |
dc0b6aa0 AM |
5928 | } |
5929 | else | |
cde9e0be | 5930 | { |
152d792f AM |
5931 | /* If this is an overlay, set the current lma to that |
5932 | at the end of the previous section. */ | |
5933 | if (os->sectype == overlay_section) | |
fc90c280 | 5934 | lma = last->lma + TO_ADDR (last->size); |
cde9e0be AM |
5935 | |
5936 | /* Otherwise, keep the same lma to vma relationship | |
5937 | as the previous section. */ | |
5938 | else | |
8610e0fd | 5939 | lma = os->bfd_section->vma + last->lma - last->vma; |
cde9e0be | 5940 | |
c5b0a9ef AM |
5941 | if (section_alignment > 0) |
5942 | lma = align_power (lma, section_alignment); | |
cde9e0be AM |
5943 | os->bfd_section->lma = lma; |
5944 | } | |
5945 | } | |
f38a2680 | 5946 | os->processed_lma = true; |
5f992e62 | 5947 | |
cde9e0be AM |
5948 | /* Keep track of normal sections using the default |
5949 | lma region. We use this to set the lma for | |
5950 | following sections. Overlays or other linker | |
5951 | script assignment to lma might mean that the | |
dc0b6aa0 AM |
5952 | default lma == vma is incorrect. |
5953 | To avoid warnings about dot moving backwards when using | |
5954 | -Ttext, don't start tracking sections until we find one | |
14ea2c1b AB |
5955 | of non-zero size or with lma set differently to vma. |
5956 | Do this tracking before we short-cut the loop so that we | |
5957 | track changes for the case where the section size is zero, | |
5958 | but the lma is set differently to the vma. This is | |
5959 | important, if an orphan section is placed after an | |
5960 | otherwise empty output section that has an explicit lma | |
5961 | set, we want that lma reflected in the orphans lma. */ | |
7b243801 AM |
5962 | if (((!IGNORE_SECTION (os->bfd_section) |
5963 | && (os->bfd_section->size != 0 | |
5964 | || (r->last_os == NULL | |
5965 | && os->bfd_section->vma != os->bfd_section->lma) | |
5966 | || (r->last_os != NULL | |
5967 | && dot >= (r->last_os->output_section_statement | |
5968 | .bfd_section->vma)))) | |
5969 | || os->sectype == first_overlay_section) | |
cde9e0be | 5970 | && os->lma_region == NULL |
0e1862bb | 5971 | && !bfd_link_relocatable (&link_info)) |
cde9e0be | 5972 | r->last_os = s; |
9f88b410 | 5973 | |
14ea2c1b AB |
5974 | if (bfd_is_abs_section (os->bfd_section) || os->ignored) |
5975 | break; | |
5976 | ||
e5caec89 | 5977 | /* .tbss sections effectively have zero size. */ |
2e4a7aea | 5978 | if (!IS_TBSS (os->bfd_section) |
0e1862bb | 5979 | || bfd_link_relocatable (&link_info)) |
13075d04 SH |
5980 | dotdelta = TO_ADDR (os->bfd_section->size); |
5981 | else | |
5982 | dotdelta = 0; | |
5983 | dot += dotdelta; | |
e5caec89 | 5984 | |
9f88b410 | 5985 | if (os->update_dot_tree != 0) |
e9ee469a | 5986 | exp_fold_tree (os->update_dot_tree, bfd_abs_section_ptr, &dot); |
9f88b410 | 5987 | |
252b5132 RH |
5988 | /* Update dot in the region ? |
5989 | We only do this if the section is going to be allocated, | |
5990 | since unallocated sections do not contribute to the region's | |
2e76e85a | 5991 | overall size in memory. */ |
1579bae1 | 5992 | if (os->region != NULL |
2e76e85a | 5993 | && (os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD))) |
252b5132 RH |
5994 | { |
5995 | os->region->current = dot; | |
5f992e62 | 5996 | |
cf888e70 NC |
5997 | if (check_regions) |
5998 | /* Make sure the new address is within the region. */ | |
5999 | os_region_check (os, os->region, os->addr_tree, | |
6000 | os->bfd_section->vma); | |
08da4cac | 6001 | |
a2cab753 | 6002 | if (os->lma_region != NULL && os->lma_region != os->region |
13075d04 SH |
6003 | && ((os->bfd_section->flags & SEC_LOAD) |
6004 | || os->align_lma_with_input)) | |
08da4cac | 6005 | { |
13075d04 | 6006 | os->lma_region->current = os->bfd_section->lma + dotdelta; |
66e28d60 | 6007 | |
cf888e70 NC |
6008 | if (check_regions) |
6009 | os_region_check (os, os->lma_region, NULL, | |
cde9e0be | 6010 | os->bfd_section->lma); |
08da4cac | 6011 | } |
252b5132 RH |
6012 | } |
6013 | } | |
6014 | break; | |
6015 | ||
6016 | case lang_constructors_statement_enum: | |
e535e147 | 6017 | dot = lang_size_sections_1 (&constructor_list.head, |
2d20f7bf | 6018 | output_section_statement, |
cf888e70 | 6019 | fill, dot, relax, check_regions); |
252b5132 RH |
6020 | break; |
6021 | ||
6022 | case lang_data_statement_enum: | |
6023 | { | |
6024 | unsigned int size = 0; | |
6025 | ||
7fabd029 | 6026 | s->data_statement.output_offset = |
08da4cac | 6027 | dot - output_section_statement->bfd_section->vma; |
252b5132 RH |
6028 | s->data_statement.output_section = |
6029 | output_section_statement->bfd_section; | |
6030 | ||
1b493742 NS |
6031 | /* We might refer to provided symbols in the expression, and |
6032 | need to mark them as needed. */ | |
e9ee469a | 6033 | exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot); |
1b493742 | 6034 | |
252b5132 RH |
6035 | switch (s->data_statement.type) |
6036 | { | |
08da4cac KH |
6037 | default: |
6038 | abort (); | |
252b5132 RH |
6039 | case QUAD: |
6040 | case SQUAD: | |
6041 | size = QUAD_SIZE; | |
6042 | break; | |
6043 | case LONG: | |
6044 | size = LONG_SIZE; | |
6045 | break; | |
6046 | case SHORT: | |
6047 | size = SHORT_SIZE; | |
6048 | break; | |
6049 | case BYTE: | |
6050 | size = BYTE_SIZE; | |
6051 | break; | |
6052 | } | |
e5caa5e0 AM |
6053 | if (size < TO_SIZE ((unsigned) 1)) |
6054 | size = TO_SIZE ((unsigned) 1); | |
6055 | dot += TO_ADDR (size); | |
8772de11 MR |
6056 | if (!(output_section_statement->bfd_section->flags |
6057 | & SEC_FIXED_SIZE)) | |
6058 | output_section_statement->bfd_section->size | |
6059 | = TO_SIZE (dot - output_section_statement->bfd_section->vma); | |
aa4c3319 | 6060 | |
252b5132 RH |
6061 | } |
6062 | break; | |
6063 | ||
6064 | case lang_reloc_statement_enum: | |
6065 | { | |
6066 | int size; | |
6067 | ||
7fabd029 | 6068 | s->reloc_statement.output_offset = |
252b5132 RH |
6069 | dot - output_section_statement->bfd_section->vma; |
6070 | s->reloc_statement.output_section = | |
6071 | output_section_statement->bfd_section; | |
6072 | size = bfd_get_reloc_size (s->reloc_statement.howto); | |
e5caa5e0 | 6073 | dot += TO_ADDR (size); |
8772de11 MR |
6074 | if (!(output_section_statement->bfd_section->flags |
6075 | & SEC_FIXED_SIZE)) | |
6076 | output_section_statement->bfd_section->size | |
6077 | = TO_SIZE (dot - output_section_statement->bfd_section->vma); | |
252b5132 RH |
6078 | } |
6079 | break; | |
5f992e62 | 6080 | |
252b5132 | 6081 | case lang_wild_statement_enum: |
e535e147 | 6082 | dot = lang_size_sections_1 (&s->wild_statement.children.head, |
2d20f7bf | 6083 | output_section_statement, |
cf888e70 | 6084 | fill, dot, relax, check_regions); |
252b5132 RH |
6085 | break; |
6086 | ||
6087 | case lang_object_symbols_statement_enum: | |
3b6c1966 AM |
6088 | link_info.create_object_symbols_section |
6089 | = output_section_statement->bfd_section; | |
6090 | output_section_statement->bfd_section->flags |= SEC_KEEP; | |
252b5132 | 6091 | break; |
e9ee469a | 6092 | |
252b5132 RH |
6093 | case lang_output_statement_enum: |
6094 | case lang_target_statement_enum: | |
6095 | break; | |
e9ee469a | 6096 | |
252b5132 RH |
6097 | case lang_input_section_enum: |
6098 | { | |
6099 | asection *i; | |
6100 | ||
e535e147 | 6101 | i = s->input_section.section; |
eea6121a | 6102 | if (relax) |
252b5132 | 6103 | { |
f38a2680 | 6104 | bool again; |
252b5132 | 6105 | |
0aa7f586 | 6106 | if (!bfd_relax_section (i->owner, i, &link_info, &again)) |
df5f2391 | 6107 | einfo (_("%F%P: can't relax section: %E\n")); |
252b5132 | 6108 | if (again) |
f38a2680 | 6109 | *relax = true; |
252b5132 | 6110 | } |
b3327aad | 6111 | dot = size_input_section (prev, output_section_statement, |
abf874aa | 6112 | fill, &removed, dot); |
252b5132 RH |
6113 | } |
6114 | break; | |
e9ee469a | 6115 | |
252b5132 RH |
6116 | case lang_input_statement_enum: |
6117 | break; | |
e9ee469a | 6118 | |
252b5132 | 6119 | case lang_fill_statement_enum: |
08da4cac KH |
6120 | s->fill_statement.output_section = |
6121 | output_section_statement->bfd_section; | |
252b5132 RH |
6122 | |
6123 | fill = s->fill_statement.fill; | |
6124 | break; | |
e9ee469a | 6125 | |
252b5132 RH |
6126 | case lang_assignment_statement_enum: |
6127 | { | |
6128 | bfd_vma newdot = dot; | |
49c13adb | 6129 | etree_type *tree = s->assignment_statement.exp; |
252b5132 | 6130 | |
0f99513f | 6131 | expld.dataseg.relro = exp_seg_relro_none; |
b10a8ae0 | 6132 | |
49c13adb | 6133 | exp_fold_tree (tree, |
408082ec | 6134 | output_section_statement->bfd_section, |
252b5132 RH |
6135 | &newdot); |
6136 | ||
ed1794ee L |
6137 | ldlang_check_relro_region (s, &expld.dataseg); |
6138 | ||
0f99513f | 6139 | expld.dataseg.relro = exp_seg_relro_none; |
b10a8ae0 | 6140 | |
d2667025 | 6141 | /* This symbol may be relative to this section. */ |
a14a5de3 | 6142 | if ((tree->type.node_class == etree_provided |
49c13adb L |
6143 | || tree->type.node_class == etree_assign) |
6144 | && (tree->assign.dst [0] != '.' | |
6145 | || tree->assign.dst [1] != '\0')) | |
6d8bf25d | 6146 | output_section_statement->update_dot = 1; |
49c13adb | 6147 | |
85852e36 | 6148 | if (!output_section_statement->ignored) |
252b5132 | 6149 | { |
252b5132 RH |
6150 | if (output_section_statement == abs_output_section) |
6151 | { | |
6152 | /* If we don't have an output section, then just adjust | |
6153 | the default memory address. */ | |
6feb9908 | 6154 | lang_memory_region_lookup (DEFAULT_MEMORY_REGION, |
f38a2680 | 6155 | false)->current = newdot; |
252b5132 | 6156 | } |
85852e36 | 6157 | else if (newdot != dot) |
252b5132 | 6158 | { |
b3327aad AM |
6159 | /* Insert a pad after this statement. We can't |
6160 | put the pad before when relaxing, in case the | |
6161 | assignment references dot. */ | |
e5caa5e0 | 6162 | insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot), |
b3327aad AM |
6163 | output_section_statement->bfd_section, dot); |
6164 | ||
6165 | /* Don't neuter the pad below when relaxing. */ | |
6166 | s = s->header.next; | |
9dfc8ab2 | 6167 | |
e9ee469a AM |
6168 | /* If dot is advanced, this implies that the section |
6169 | should have space allocated to it, unless the | |
6170 | user has explicitly stated that the section | |
2e76e85a | 6171 | should not be allocated. */ |
f4eaaf7f AM |
6172 | if (output_section_statement->sectype != noalloc_section |
6173 | && (output_section_statement->sectype != noload_section | |
6174 | || (bfd_get_flavour (link_info.output_bfd) | |
6175 | == bfd_target_elf_flavour))) | |
e9ee469a AM |
6176 | output_section_statement->bfd_section->flags |= SEC_ALLOC; |
6177 | } | |
252b5132 RH |
6178 | dot = newdot; |
6179 | } | |
6180 | } | |
6181 | break; | |
6182 | ||
6183 | case lang_padding_statement_enum: | |
c0c330a7 AM |
6184 | /* If this is the first time lang_size_sections is called, |
6185 | we won't have any padding statements. If this is the | |
6186 | second or later passes when relaxing, we should allow | |
6187 | padding to shrink. If padding is needed on this pass, it | |
6188 | will be added back in. */ | |
6189 | s->padding_statement.size = 0; | |
6e814ff8 AM |
6190 | |
6191 | /* Make sure output_offset is valid. If relaxation shrinks | |
6192 | the section and this pad isn't needed, it's possible to | |
6193 | have output_offset larger than the final size of the | |
6194 | section. bfd_set_section_contents will complain even for | |
6195 | a pad size of zero. */ | |
6196 | s->padding_statement.output_offset | |
6197 | = dot - output_section_statement->bfd_section->vma; | |
252b5132 RH |
6198 | break; |
6199 | ||
6200 | case lang_group_statement_enum: | |
e535e147 | 6201 | dot = lang_size_sections_1 (&s->group_statement.children.head, |
2d20f7bf | 6202 | output_section_statement, |
cf888e70 | 6203 | fill, dot, relax, check_regions); |
252b5132 RH |
6204 | break; |
6205 | ||
53d25da6 | 6206 | case lang_insert_statement_enum: |
252b5132 RH |
6207 | break; |
6208 | ||
c0c330a7 | 6209 | /* We can only get here when relaxing is turned on. */ |
252b5132 RH |
6210 | case lang_address_statement_enum: |
6211 | break; | |
53d25da6 AM |
6212 | |
6213 | default: | |
6214 | FAIL (); | |
6215 | break; | |
252b5132 | 6216 | } |
abf874aa CL |
6217 | |
6218 | /* If an input section doesn't fit in the current output | |
6219 | section, remove it from the list. Handle the case where we | |
6220 | have to remove an input_section statement here: there is a | |
6221 | special case to remove the first element of the list. */ | |
6222 | if (link_info.non_contiguous_regions && removed) | |
6223 | { | |
6224 | /* If we removed the first element during the previous | |
6225 | iteration, override the loop assignment of prev_s. */ | |
6226 | if (removed_prev_s) | |
6227 | prev_s = NULL; | |
6228 | ||
6229 | if (prev_s) | |
6230 | { | |
6231 | /* If there was a real previous input section, just skip | |
6232 | the current one. */ | |
6233 | prev_s->header.next=s->header.next; | |
6234 | s = prev_s; | |
f38a2680 | 6235 | removed_prev_s = false; |
abf874aa CL |
6236 | } |
6237 | else | |
6238 | { | |
6239 | /* Remove the first input section of the list. */ | |
6240 | *prev = s->header.next; | |
f38a2680 | 6241 | removed_prev_s = true; |
abf874aa CL |
6242 | } |
6243 | ||
6244 | /* Move to next element, unless we removed the head of the | |
6245 | list. */ | |
6246 | if (!removed_prev_s) | |
6247 | prev = &s->header.next; | |
6248 | } | |
6249 | else | |
6250 | { | |
6251 | prev = &s->header.next; | |
f38a2680 | 6252 | removed_prev_s = false; |
abf874aa | 6253 | } |
252b5132 RH |
6254 | } |
6255 | return dot; | |
6256 | } | |
6257 | ||
591a748a NC |
6258 | /* Callback routine that is used in _bfd_elf_map_sections_to_segments. |
6259 | The BFD library has set NEW_SEGMENT to TRUE iff it thinks that | |
6260 | CURRENT_SECTION and PREVIOUS_SECTION ought to be placed into different | |
6261 | segments. We are allowed an opportunity to override this decision. */ | |
2889e75b | 6262 | |
f38a2680 | 6263 | bool |
0aa7f586 AM |
6264 | ldlang_override_segment_assignment (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
6265 | bfd *abfd ATTRIBUTE_UNUSED, | |
6266 | asection *current_section, | |
6267 | asection *previous_section, | |
f38a2680 | 6268 | bool new_segment) |
2889e75b | 6269 | { |
0aa7f586 AM |
6270 | lang_output_section_statement_type *cur; |
6271 | lang_output_section_statement_type *prev; | |
591a748a NC |
6272 | |
6273 | /* The checks below are only necessary when the BFD library has decided | |
6274 | that the two sections ought to be placed into the same segment. */ | |
2889e75b | 6275 | if (new_segment) |
f38a2680 | 6276 | return true; |
2889e75b NC |
6277 | |
6278 | /* Paranoia checks. */ | |
6279 | if (current_section == NULL || previous_section == NULL) | |
6280 | return new_segment; | |
6281 | ||
4724d37e RM |
6282 | /* If this flag is set, the target never wants code and non-code |
6283 | sections comingled in the same segment. */ | |
6284 | if (config.separate_code | |
6285 | && ((current_section->flags ^ previous_section->flags) & SEC_CODE)) | |
f38a2680 | 6286 | return true; |
4724d37e | 6287 | |
2889e75b NC |
6288 | /* Find the memory regions associated with the two sections. |
6289 | We call lang_output_section_find() here rather than scanning the list | |
6290 | of output sections looking for a matching section pointer because if | |
591a748a | 6291 | we have a large number of sections then a hash lookup is faster. */ |
2889e75b NC |
6292 | cur = lang_output_section_find (current_section->name); |
6293 | prev = lang_output_section_find (previous_section->name); | |
6294 | ||
591a748a | 6295 | /* More paranoia. */ |
2889e75b NC |
6296 | if (cur == NULL || prev == NULL) |
6297 | return new_segment; | |
6298 | ||
6299 | /* If the regions are different then force the sections to live in | |
591a748a NC |
6300 | different segments. See the email thread starting at the following |
6301 | URL for the reasons why this is necessary: | |
2889e75b NC |
6302 | http://sourceware.org/ml/binutils/2007-02/msg00216.html */ |
6303 | return cur->region != prev->region; | |
6304 | } | |
6305 | ||
e9ee469a | 6306 | void |
f38a2680 | 6307 | one_lang_size_sections_pass (bool *relax, bool check_regions) |
2d20f7bf | 6308 | { |
420e579c | 6309 | lang_statement_iteration++; |
baf09cba AM |
6310 | if (expld.phase != lang_mark_phase_enum) |
6311 | lang_sizing_iteration++; | |
e535e147 AM |
6312 | lang_size_sections_1 (&statement_list.head, abs_output_section, |
6313 | 0, 0, relax, check_regions); | |
e9ee469a | 6314 | } |
420e579c | 6315 | |
f38a2680 | 6316 | static bool |
cba6246d | 6317 | lang_size_segment (seg_align_type *seg) |
e9ee469a | 6318 | { |
cba6246d L |
6319 | /* If XXX_SEGMENT_ALIGN XXX_SEGMENT_END pair was seen, check whether |
6320 | a page could be saved in the data segment. */ | |
6321 | bfd_vma first, last; | |
6322 | ||
6323 | first = -seg->base & (seg->pagesize - 1); | |
6324 | last = seg->end & (seg->pagesize - 1); | |
6325 | if (first && last | |
6326 | && ((seg->base & ~(seg->pagesize - 1)) | |
6327 | != (seg->end & ~(seg->pagesize - 1))) | |
6328 | && first + last <= seg->pagesize) | |
8c37241b | 6329 | { |
cba6246d | 6330 | seg->phase = exp_seg_adjust; |
f38a2680 | 6331 | return true; |
cba6246d L |
6332 | } |
6333 | ||
6334 | seg->phase = exp_seg_done; | |
f38a2680 | 6335 | return false; |
cba6246d L |
6336 | } |
6337 | ||
6338 | static bfd_vma | |
6339 | lang_size_relro_segment_1 (seg_align_type *seg) | |
6340 | { | |
6341 | bfd_vma relro_end, desired_end; | |
6342 | asection *sec; | |
8c37241b | 6343 | |
cba6246d L |
6344 | /* Compute the expected PT_GNU_RELRO/PT_LOAD segment end. */ |
6345 | relro_end = ((seg->relro_end + seg->pagesize - 1) | |
6346 | & ~(seg->pagesize - 1)); | |
0e5fabeb | 6347 | |
cba6246d L |
6348 | /* Adjust by the offset arg of XXX_SEGMENT_RELRO_END. */ |
6349 | desired_end = relro_end - seg->relro_offset; | |
0e5fabeb | 6350 | |
cba6246d L |
6351 | /* For sections in the relro segment.. */ |
6352 | for (sec = link_info.output_bfd->section_last; sec; sec = sec->prev) | |
6353 | if ((sec->flags & SEC_ALLOC) != 0 | |
6354 | && sec->vma >= seg->base | |
6355 | && sec->vma < seg->relro_end - seg->relro_offset) | |
6356 | { | |
6357 | /* Where do we want to put this section so that it ends as | |
6358 | desired? */ | |
6359 | bfd_vma start, end, bump; | |
6360 | ||
6361 | end = start = sec->vma; | |
6362 | if (!IS_TBSS (sec)) | |
6363 | end += TO_ADDR (sec->size); | |
6364 | bump = desired_end - end; | |
6365 | /* We'd like to increase START by BUMP, but we must heed | |
6366 | alignment so the increase might be less than optimum. */ | |
6367 | start += bump; | |
6368 | start &= ~(((bfd_vma) 1 << sec->alignment_power) - 1); | |
6369 | /* This is now the desired end for the previous section. */ | |
6370 | desired_end = start; | |
6371 | } | |
6372 | ||
6373 | seg->phase = exp_seg_relro_adjust; | |
6374 | ASSERT (desired_end >= seg->base); | |
6375 | seg->base = desired_end; | |
6376 | return relro_end; | |
6377 | } | |
6378 | ||
f38a2680 AM |
6379 | static bool |
6380 | lang_size_relro_segment (bool *relax, bool check_regions) | |
cba6246d | 6381 | { |
f38a2680 AM |
6382 | bool do_reset = false; |
6383 | bool do_data_relro; | |
cba6246d L |
6384 | bfd_vma data_initial_base, data_relro_end; |
6385 | ||
6386 | if (link_info.relro && expld.dataseg.relro_end) | |
6387 | { | |
f38a2680 | 6388 | do_data_relro = true; |
cba6246d L |
6389 | data_initial_base = expld.dataseg.base; |
6390 | data_relro_end = lang_size_relro_segment_1 (&expld.dataseg); | |
6391 | } | |
6392 | else | |
6393 | { | |
f38a2680 | 6394 | do_data_relro = false; |
cba6246d L |
6395 | data_initial_base = data_relro_end = 0; |
6396 | } | |
0e5fabeb | 6397 | |
cba6246d L |
6398 | if (do_data_relro) |
6399 | { | |
f86a8756 | 6400 | lang_reset_memory_regions (); |
e9ee469a | 6401 | one_lang_size_sections_pass (relax, check_regions); |
0e5fabeb | 6402 | |
cba6246d L |
6403 | /* Assignments to dot, or to output section address in a user |
6404 | script have increased padding over the original. Revert. */ | |
6405 | if (do_data_relro && expld.dataseg.relro_end > data_relro_end) | |
a4f5ad88 | 6406 | { |
cba6246d | 6407 | expld.dataseg.base = data_initial_base;; |
f38a2680 | 6408 | do_reset = true; |
a4f5ad88 | 6409 | } |
8c37241b | 6410 | } |
cba6246d L |
6411 | |
6412 | if (!do_data_relro && lang_size_segment (&expld.dataseg)) | |
f38a2680 | 6413 | do_reset = true; |
cba6246d L |
6414 | |
6415 | return do_reset; | |
6416 | } | |
6417 | ||
6418 | void | |
f38a2680 | 6419 | lang_size_sections (bool *relax, bool check_regions) |
cba6246d L |
6420 | { |
6421 | expld.phase = lang_allocating_phase_enum; | |
6422 | expld.dataseg.phase = exp_seg_none; | |
6423 | ||
6424 | one_lang_size_sections_pass (relax, check_regions); | |
6425 | ||
6426 | if (expld.dataseg.phase != exp_seg_end_seen) | |
6427 | expld.dataseg.phase = exp_seg_done; | |
6428 | ||
6429 | if (expld.dataseg.phase == exp_seg_end_seen) | |
2d20f7bf | 6430 | { |
f38a2680 | 6431 | bool do_reset |
cba6246d L |
6432 | = lang_size_relro_segment (relax, check_regions); |
6433 | ||
6434 | if (do_reset) | |
2d20f7bf | 6435 | { |
f86a8756 | 6436 | lang_reset_memory_regions (); |
e9ee469a | 6437 | one_lang_size_sections_pass (relax, check_regions); |
2d20f7bf | 6438 | } |
cba6246d L |
6439 | |
6440 | if (link_info.relro && expld.dataseg.relro_end) | |
6441 | { | |
6442 | link_info.relro_start = expld.dataseg.base; | |
6443 | link_info.relro_end = expld.dataseg.relro_end; | |
6444 | } | |
2d20f7bf | 6445 | } |
2d20f7bf JJ |
6446 | } |
6447 | ||
d2667025 AM |
6448 | static lang_output_section_statement_type *current_section; |
6449 | static lang_assignment_statement_type *current_assign; | |
f38a2680 | 6450 | static bool prefer_next_section; |
d2667025 | 6451 | |
420e579c HPN |
6452 | /* Worker function for lang_do_assignments. Recursiveness goes here. */ |
6453 | ||
6454 | static bfd_vma | |
66e28d60 AM |
6455 | lang_do_assignments_1 (lang_statement_union_type *s, |
6456 | lang_output_section_statement_type *current_os, | |
6457 | fill_type *fill, | |
d2667025 | 6458 | bfd_vma dot, |
f38a2680 | 6459 | bool *found_end) |
252b5132 | 6460 | { |
1579bae1 | 6461 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
6462 | { |
6463 | switch (s->header.type) | |
6464 | { | |
6465 | case lang_constructors_statement_enum: | |
420e579c | 6466 | dot = lang_do_assignments_1 (constructor_list.head, |
d2667025 | 6467 | current_os, fill, dot, found_end); |
252b5132 RH |
6468 | break; |
6469 | ||
6470 | case lang_output_section_statement_enum: | |
6471 | { | |
d1778b88 | 6472 | lang_output_section_statement_type *os; |
f02cb058 | 6473 | bfd_vma newdot; |
252b5132 | 6474 | |
d1778b88 | 6475 | os = &(s->output_section_statement); |
d2667025 | 6476 | os->after_end = *found_end; |
61826503 | 6477 | init_opb (os->bfd_section); |
75ff4589 | 6478 | if (os->bfd_section != NULL && !os->ignored) |
252b5132 | 6479 | { |
d2667025 AM |
6480 | if ((os->bfd_section->flags & SEC_ALLOC) != 0) |
6481 | { | |
6482 | current_section = os; | |
f38a2680 | 6483 | prefer_next_section = false; |
d2667025 | 6484 | } |
252b5132 | 6485 | dot = os->bfd_section->vma; |
f02cb058 AM |
6486 | } |
6487 | newdot = lang_do_assignments_1 (os->children.head, | |
6488 | os, os->fill, dot, found_end); | |
6489 | if (!os->ignored) | |
6490 | { | |
6491 | if (os->bfd_section != NULL) | |
6492 | { | |
6493 | /* .tbss sections effectively have zero size. */ | |
6494 | if (!IS_TBSS (os->bfd_section) | |
6495 | || bfd_link_relocatable (&link_info)) | |
6496 | dot += TO_ADDR (os->bfd_section->size); | |
6497 | ||
6498 | if (os->update_dot_tree != NULL) | |
6499 | exp_fold_tree (os->update_dot_tree, | |
6500 | bfd_abs_section_ptr, &dot); | |
6501 | } | |
6502 | else | |
6503 | dot = newdot; | |
252b5132 RH |
6504 | } |
6505 | } | |
6506 | break; | |
e9ee469a | 6507 | |
252b5132 RH |
6508 | case lang_wild_statement_enum: |
6509 | ||
420e579c | 6510 | dot = lang_do_assignments_1 (s->wild_statement.children.head, |
d2667025 | 6511 | current_os, fill, dot, found_end); |
252b5132 RH |
6512 | break; |
6513 | ||
6514 | case lang_object_symbols_statement_enum: | |
6515 | case lang_output_statement_enum: | |
6516 | case lang_target_statement_enum: | |
252b5132 | 6517 | break; |
e9ee469a | 6518 | |
252b5132 | 6519 | case lang_data_statement_enum: |
e9ee469a AM |
6520 | exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot); |
6521 | if (expld.result.valid_p) | |
7542af2a AM |
6522 | { |
6523 | s->data_statement.value = expld.result.value; | |
6524 | if (expld.result.section != NULL) | |
6525 | s->data_statement.value += expld.result.section->vma; | |
6526 | } | |
f02cb058 | 6527 | else if (expld.phase == lang_final_phase_enum) |
e9ee469a | 6528 | einfo (_("%F%P: invalid data statement\n")); |
b7a26f91 KH |
6529 | { |
6530 | unsigned int size; | |
08da4cac KH |
6531 | switch (s->data_statement.type) |
6532 | { | |
6533 | default: | |
6534 | abort (); | |
6535 | case QUAD: | |
6536 | case SQUAD: | |
6537 | size = QUAD_SIZE; | |
6538 | break; | |
6539 | case LONG: | |
6540 | size = LONG_SIZE; | |
6541 | break; | |
6542 | case SHORT: | |
6543 | size = SHORT_SIZE; | |
6544 | break; | |
6545 | case BYTE: | |
6546 | size = BYTE_SIZE; | |
6547 | break; | |
6548 | } | |
e5caa5e0 AM |
6549 | if (size < TO_SIZE ((unsigned) 1)) |
6550 | size = TO_SIZE ((unsigned) 1); | |
6551 | dot += TO_ADDR (size); | |
08da4cac | 6552 | } |
252b5132 RH |
6553 | break; |
6554 | ||
6555 | case lang_reloc_statement_enum: | |
e9ee469a AM |
6556 | exp_fold_tree (s->reloc_statement.addend_exp, |
6557 | bfd_abs_section_ptr, &dot); | |
6558 | if (expld.result.valid_p) | |
6559 | s->reloc_statement.addend_value = expld.result.value; | |
f02cb058 | 6560 | else if (expld.phase == lang_final_phase_enum) |
e9ee469a | 6561 | einfo (_("%F%P: invalid reloc statement\n")); |
e5caa5e0 | 6562 | dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto)); |
252b5132 RH |
6563 | break; |
6564 | ||
6565 | case lang_input_section_enum: | |
6566 | { | |
6567 | asection *in = s->input_section.section; | |
6568 | ||
57ceae94 | 6569 | if ((in->flags & SEC_EXCLUDE) == 0) |
eea6121a | 6570 | dot += TO_ADDR (in->size); |
252b5132 RH |
6571 | } |
6572 | break; | |
6573 | ||
6574 | case lang_input_statement_enum: | |
6575 | break; | |
e9ee469a | 6576 | |
252b5132 RH |
6577 | case lang_fill_statement_enum: |
6578 | fill = s->fill_statement.fill; | |
6579 | break; | |
252b5132 | 6580 | |
e9ee469a | 6581 | case lang_assignment_statement_enum: |
d2667025 AM |
6582 | current_assign = &s->assignment_statement; |
6583 | if (current_assign->exp->type.node_class != etree_assert) | |
6584 | { | |
6585 | const char *p = current_assign->exp->assign.dst; | |
6586 | ||
6587 | if (current_os == abs_output_section && p[0] == '.' && p[1] == 0) | |
f38a2680 | 6588 | prefer_next_section = true; |
d2667025 AM |
6589 | |
6590 | while (*p == '_') | |
6591 | ++p; | |
6592 | if (strcmp (p, "end") == 0) | |
f38a2680 | 6593 | *found_end = true; |
d2667025 | 6594 | } |
e9ee469a | 6595 | exp_fold_tree (s->assignment_statement.exp, |
f02cb058 AM |
6596 | (current_os->bfd_section != NULL |
6597 | ? current_os->bfd_section : bfd_und_section_ptr), | |
e9ee469a | 6598 | &dot); |
252b5132 | 6599 | break; |
e9ee469a | 6600 | |
252b5132 | 6601 | case lang_padding_statement_enum: |
e5caa5e0 | 6602 | dot += TO_ADDR (s->padding_statement.size); |
252b5132 RH |
6603 | break; |
6604 | ||
6605 | case lang_group_statement_enum: | |
420e579c | 6606 | dot = lang_do_assignments_1 (s->group_statement.children.head, |
d2667025 | 6607 | current_os, fill, dot, found_end); |
252b5132 RH |
6608 | break; |
6609 | ||
53d25da6 | 6610 | case lang_insert_statement_enum: |
252b5132 | 6611 | break; |
e9ee469a | 6612 | |
252b5132 RH |
6613 | case lang_address_statement_enum: |
6614 | break; | |
53d25da6 AM |
6615 | |
6616 | default: | |
6617 | FAIL (); | |
6618 | break; | |
252b5132 | 6619 | } |
252b5132 RH |
6620 | } |
6621 | return dot; | |
6622 | } | |
6623 | ||
f2241121 | 6624 | void |
2f65ac72 | 6625 | lang_do_assignments (lang_phase_type phase) |
420e579c | 6626 | { |
f38a2680 | 6627 | bool found_end = false; |
d2667025 AM |
6628 | |
6629 | current_section = NULL; | |
f38a2680 | 6630 | prefer_next_section = false; |
2f65ac72 | 6631 | expld.phase = phase; |
420e579c | 6632 | lang_statement_iteration++; |
d2667025 AM |
6633 | lang_do_assignments_1 (statement_list.head, |
6634 | abs_output_section, NULL, 0, &found_end); | |
6635 | } | |
6636 | ||
6637 | /* For an assignment statement outside of an output section statement, | |
6638 | choose the best of neighbouring output sections to use for values | |
6639 | of "dot". */ | |
6640 | ||
6641 | asection * | |
6642 | section_for_dot (void) | |
6643 | { | |
6644 | asection *s; | |
6645 | ||
6646 | /* Assignments belong to the previous output section, unless there | |
6647 | has been an assignment to "dot", in which case following | |
6648 | assignments belong to the next output section. (The assumption | |
6649 | is that an assignment to "dot" is setting up the address for the | |
6650 | next output section.) Except that past the assignment to "_end" | |
6651 | we always associate with the previous section. This exception is | |
6652 | for targets like SH that define an alloc .stack or other | |
6653 | weirdness after non-alloc sections. */ | |
6654 | if (current_section == NULL || prefer_next_section) | |
6655 | { | |
6656 | lang_statement_union_type *stmt; | |
6657 | lang_output_section_statement_type *os; | |
6658 | ||
6659 | for (stmt = (lang_statement_union_type *) current_assign; | |
6660 | stmt != NULL; | |
6661 | stmt = stmt->header.next) | |
6662 | if (stmt->header.type == lang_output_section_statement_enum) | |
6663 | break; | |
6664 | ||
6665 | os = &stmt->output_section_statement; | |
6666 | while (os != NULL | |
6667 | && !os->after_end | |
6668 | && (os->bfd_section == NULL | |
6669 | || (os->bfd_section->flags & SEC_EXCLUDE) != 0 | |
6670 | || bfd_section_removed_from_list (link_info.output_bfd, | |
6671 | os->bfd_section))) | |
6672 | os = os->next; | |
6673 | ||
6674 | if (current_section == NULL || os == NULL || !os->after_end) | |
6675 | { | |
6676 | if (os != NULL) | |
6677 | s = os->bfd_section; | |
6678 | else | |
6679 | s = link_info.output_bfd->section_last; | |
6680 | while (s != NULL | |
6681 | && ((s->flags & SEC_ALLOC) == 0 | |
6682 | || (s->flags & SEC_THREAD_LOCAL) != 0)) | |
6683 | s = s->prev; | |
6684 | if (s != NULL) | |
6685 | return s; | |
6686 | ||
6687 | return bfd_abs_section_ptr; | |
6688 | } | |
6689 | } | |
6690 | ||
6691 | s = current_section->bfd_section; | |
6692 | ||
6693 | /* The section may have been stripped. */ | |
6694 | while (s != NULL | |
6695 | && ((s->flags & SEC_EXCLUDE) != 0 | |
6696 | || (s->flags & SEC_ALLOC) == 0 | |
6697 | || (s->flags & SEC_THREAD_LOCAL) != 0 | |
6698 | || bfd_section_removed_from_list (link_info.output_bfd, s))) | |
6699 | s = s->prev; | |
6700 | if (s == NULL) | |
6701 | s = link_info.output_bfd->sections; | |
6702 | while (s != NULL | |
6703 | && ((s->flags & SEC_ALLOC) == 0 | |
6704 | || (s->flags & SEC_THREAD_LOCAL) != 0)) | |
6705 | s = s->next; | |
6706 | if (s != NULL) | |
6707 | return s; | |
6708 | ||
6709 | return bfd_abs_section_ptr; | |
420e579c HPN |
6710 | } |
6711 | ||
7dba9362 AM |
6712 | /* Array of __start/__stop/.startof./.sizeof/ symbols. */ |
6713 | ||
6714 | static struct bfd_link_hash_entry **start_stop_syms; | |
6715 | static size_t start_stop_count = 0; | |
6716 | static size_t start_stop_alloc = 0; | |
6717 | ||
6718 | /* Give start/stop SYMBOL for SEC a preliminary definition, and add it | |
6719 | to start_stop_syms. */ | |
6720 | ||
6721 | static void | |
6722 | lang_define_start_stop (const char *symbol, asection *sec) | |
6723 | { | |
6724 | struct bfd_link_hash_entry *h; | |
6725 | ||
6726 | h = bfd_define_start_stop (link_info.output_bfd, &link_info, symbol, sec); | |
6727 | if (h != NULL) | |
6728 | { | |
6729 | if (start_stop_count == start_stop_alloc) | |
6730 | { | |
6731 | start_stop_alloc = 2 * start_stop_alloc + 10; | |
6732 | start_stop_syms | |
6733 | = xrealloc (start_stop_syms, | |
6734 | start_stop_alloc * sizeof (*start_stop_syms)); | |
6735 | } | |
6736 | start_stop_syms[start_stop_count++] = h; | |
6737 | } | |
6738 | } | |
6739 | ||
6740 | /* Check for input sections whose names match references to | |
6741 | __start_SECNAME or __stop_SECNAME symbols. Give the symbols | |
6742 | preliminary definitions. */ | |
252b5132 RH |
6743 | |
6744 | static void | |
7dba9362 | 6745 | lang_init_start_stop (void) |
252b5132 | 6746 | { |
7dba9362 | 6747 | bfd *abfd; |
252b5132 | 6748 | asection *s; |
7dba9362 AM |
6749 | char leading_char = bfd_get_symbol_leading_char (link_info.output_bfd); |
6750 | ||
6751 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link.next) | |
6752 | for (s = abfd->sections; s != NULL; s = s->next) | |
6753 | { | |
6754 | const char *ps; | |
6755 | const char *secname = s->name; | |
6756 | ||
6757 | for (ps = secname; *ps != '\0'; ps++) | |
6758 | if (!ISALNUM ((unsigned char) *ps) && *ps != '_') | |
6759 | break; | |
6760 | if (*ps == '\0') | |
6761 | { | |
6762 | char *symbol = (char *) xmalloc (10 + strlen (secname)); | |
b27685f2 | 6763 | |
7dba9362 AM |
6764 | symbol[0] = leading_char; |
6765 | sprintf (symbol + (leading_char != 0), "__start_%s", secname); | |
6766 | lang_define_start_stop (symbol, s); | |
6767 | ||
6768 | symbol[1] = leading_char; | |
6769 | memcpy (symbol + 1 + (leading_char != 0), "__stop", 6); | |
6770 | lang_define_start_stop (symbol + 1, s); | |
6771 | ||
6772 | free (symbol); | |
6773 | } | |
6774 | } | |
6775 | } | |
6776 | ||
6777 | /* Iterate over start_stop_syms. */ | |
6778 | ||
6779 | static void | |
6780 | foreach_start_stop (void (*func) (struct bfd_link_hash_entry *)) | |
6781 | { | |
6782 | size_t i; | |
6783 | ||
6784 | for (i = 0; i < start_stop_count; ++i) | |
6785 | func (start_stop_syms[i]); | |
6786 | } | |
6787 | ||
6788 | /* __start and __stop symbols are only supposed to be defined by the | |
6789 | linker for orphan sections, but we now extend that to sections that | |
6790 | map to an output section of the same name. The symbols were | |
6791 | defined early for --gc-sections, before we mapped input to output | |
6792 | sections, so undo those that don't satisfy this rule. */ | |
6793 | ||
6794 | static void | |
6795 | undef_start_stop (struct bfd_link_hash_entry *h) | |
6796 | { | |
6797 | if (h->ldscript_def) | |
b27685f2 L |
6798 | return; |
6799 | ||
7dba9362 AM |
6800 | if (h->u.def.section->output_section == NULL |
6801 | || h->u.def.section->output_section->owner != link_info.output_bfd | |
6802 | || strcmp (h->u.def.section->name, | |
6803 | h->u.def.section->output_section->name) != 0) | |
6804 | { | |
4d1c6335 L |
6805 | asection *sec = bfd_get_section_by_name (link_info.output_bfd, |
6806 | h->u.def.section->name); | |
6807 | if (sec != NULL) | |
6808 | { | |
6809 | /* When there are more than one input sections with the same | |
6810 | section name, SECNAME, linker picks the first one to define | |
6811 | __start_SECNAME and __stop_SECNAME symbols. When the first | |
6812 | input section is removed by comdat group, we need to check | |
6813 | if there is still an output section with section name | |
6814 | SECNAME. */ | |
6815 | asection *i; | |
6816 | for (i = sec->map_head.s; i != NULL; i = i->map_head.s) | |
6817 | if (strcmp (h->u.def.section->name, i->name) == 0) | |
6818 | { | |
6819 | h->u.def.section = i; | |
6820 | return; | |
6821 | } | |
6822 | } | |
7dba9362 AM |
6823 | h->type = bfd_link_hash_undefined; |
6824 | h->u.undef.abfd = NULL; | |
fc304b88 | 6825 | if (is_elf_hash_table (link_info.hash)) |
7824c1d2 AM |
6826 | { |
6827 | const struct elf_backend_data *bed; | |
6828 | struct elf_link_hash_entry *eh = (struct elf_link_hash_entry *) h; | |
6829 | unsigned int was_forced = eh->forced_local; | |
6830 | ||
6831 | bed = get_elf_backend_data (link_info.output_bfd); | |
f38a2680 | 6832 | (*bed->elf_backend_hide_symbol) (&link_info, eh, true); |
7824c1d2 AM |
6833 | if (!eh->ref_regular_nonweak) |
6834 | h->type = bfd_link_hash_undefweak; | |
6835 | eh->def_regular = 0; | |
6836 | eh->forced_local = was_forced; | |
6837 | } | |
7dba9362 AM |
6838 | } |
6839 | } | |
252b5132 | 6840 | |
7dba9362 AM |
6841 | static void |
6842 | lang_undef_start_stop (void) | |
6843 | { | |
6844 | foreach_start_stop (undef_start_stop); | |
6845 | } | |
6846 | ||
6847 | /* Check for output sections whose names match references to | |
6848 | .startof.SECNAME or .sizeof.SECNAME symbols. Give the symbols | |
6849 | preliminary definitions. */ | |
6850 | ||
6851 | static void | |
6852 | lang_init_startof_sizeof (void) | |
6853 | { | |
6854 | asection *s; | |
252b5132 | 6855 | |
f13a99db | 6856 | for (s = link_info.output_bfd->sections; s != NULL; s = s->next) |
252b5132 | 6857 | { |
7dba9362 AM |
6858 | const char *secname = s->name; |
6859 | char *symbol = (char *) xmalloc (10 + strlen (secname)); | |
252b5132 | 6860 | |
7dba9362 AM |
6861 | sprintf (symbol, ".startof.%s", secname); |
6862 | lang_define_start_stop (symbol, s); | |
252b5132 | 6863 | |
7dba9362 AM |
6864 | memcpy (symbol + 1, ".size", 5); |
6865 | lang_define_start_stop (symbol + 1, s); | |
6866 | free (symbol); | |
6867 | } | |
6868 | } | |
cbd0eecf | 6869 | |
7dba9362 AM |
6870 | /* Set .startof., .sizeof., __start and __stop symbols final values. */ |
6871 | ||
6872 | static void | |
6873 | set_start_stop (struct bfd_link_hash_entry *h) | |
6874 | { | |
6875 | if (h->ldscript_def | |
6876 | || h->type != bfd_link_hash_defined) | |
6877 | return; | |
cbd0eecf | 6878 | |
7dba9362 AM |
6879 | if (h->root.string[0] == '.') |
6880 | { | |
6881 | /* .startof. or .sizeof. symbol. | |
6882 | .startof. already has final value. */ | |
6883 | if (h->root.string[2] == 'i') | |
252b5132 | 6884 | { |
7dba9362 AM |
6885 | /* .sizeof. */ |
6886 | h->u.def.value = TO_ADDR (h->u.def.section->size); | |
6887 | h->u.def.section = bfd_abs_section_ptr; | |
252b5132 | 6888 | } |
7dba9362 AM |
6889 | } |
6890 | else | |
6891 | { | |
6892 | /* __start or __stop symbol. */ | |
6893 | int has_lead = bfd_get_symbol_leading_char (link_info.output_bfd) != 0; | |
252b5132 | 6894 | |
7dba9362 AM |
6895 | h->u.def.section = h->u.def.section->output_section; |
6896 | if (h->root.string[4 + has_lead] == 'o') | |
252b5132 | 6897 | { |
7dba9362 AM |
6898 | /* __stop_ */ |
6899 | h->u.def.value = TO_ADDR (h->u.def.section->size); | |
252b5132 | 6900 | } |
252b5132 RH |
6901 | } |
6902 | } | |
6903 | ||
7dba9362 AM |
6904 | static void |
6905 | lang_finalize_start_stop (void) | |
6906 | { | |
6907 | foreach_start_stop (set_start_stop); | |
6908 | } | |
6909 | ||
252b5132 | 6910 | static void |
750877ba | 6911 | lang_end (void) |
252b5132 RH |
6912 | { |
6913 | struct bfd_link_hash_entry *h; | |
f38a2680 | 6914 | bool warn; |
252b5132 | 6915 | |
0e1862bb L |
6916 | if ((bfd_link_relocatable (&link_info) && !link_info.gc_sections) |
6917 | || bfd_link_dll (&link_info)) | |
71934f94 | 6918 | warn = entry_from_cmdline; |
252b5132 | 6919 | else |
f38a2680 | 6920 | warn = true; |
252b5132 | 6921 | |
ac69cbc6 | 6922 | /* Force the user to specify a root when generating a relocatable with |
91ae256e AM |
6923 | --gc-sections, unless --gc-keep-exported was also given. */ |
6924 | if (bfd_link_relocatable (&link_info) | |
6925 | && link_info.gc_sections | |
2f5541f3 AM |
6926 | && !link_info.gc_keep_exported) |
6927 | { | |
6928 | struct bfd_sym_chain *sym; | |
6929 | ||
6930 | for (sym = link_info.gc_sym_list; sym != NULL; sym = sym->next) | |
6931 | { | |
6932 | h = bfd_link_hash_lookup (link_info.hash, sym->name, | |
f38a2680 | 6933 | false, false, false); |
2f5541f3 AM |
6934 | if (h != NULL |
6935 | && (h->type == bfd_link_hash_defined | |
6936 | || h->type == bfd_link_hash_defweak) | |
6937 | && !bfd_is_const_section (h->u.def.section)) | |
6938 | break; | |
6939 | } | |
6940 | if (!sym) | |
6941 | einfo (_("%F%P: --gc-sections requires a defined symbol root " | |
6942 | "specified by -e or -u\n")); | |
6943 | } | |
ac69cbc6 | 6944 | |
1579bae1 | 6945 | if (entry_symbol.name == NULL) |
252b5132 | 6946 | { |
a359509e ZW |
6947 | /* No entry has been specified. Look for the default entry, but |
6948 | don't warn if we don't find it. */ | |
6949 | entry_symbol.name = entry_symbol_default; | |
f38a2680 | 6950 | warn = false; |
252b5132 RH |
6951 | } |
6952 | ||
e3e942e9 | 6953 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, |
f38a2680 | 6954 | false, false, true); |
1579bae1 | 6955 | if (h != NULL |
252b5132 RH |
6956 | && (h->type == bfd_link_hash_defined |
6957 | || h->type == bfd_link_hash_defweak) | |
6958 | && h->u.def.section->output_section != NULL) | |
6959 | { | |
6960 | bfd_vma val; | |
6961 | ||
6962 | val = (h->u.def.value | |
fd361982 | 6963 | + bfd_section_vma (h->u.def.section->output_section) |
252b5132 | 6964 | + h->u.def.section->output_offset); |
0aa7f586 | 6965 | if (!bfd_set_start_address (link_info.output_bfd, val)) |
df5f2391 | 6966 | einfo (_("%F%P: %s: can't set start address\n"), entry_symbol.name); |
252b5132 RH |
6967 | } |
6968 | else | |
6969 | { | |
6970 | bfd_vma val; | |
5f992e62 | 6971 | const char *send; |
252b5132 RH |
6972 | |
6973 | /* We couldn't find the entry symbol. Try parsing it as a | |
afd7a018 | 6974 | number. */ |
e3e942e9 | 6975 | val = bfd_scan_vma (entry_symbol.name, &send, 0); |
252b5132 RH |
6976 | if (*send == '\0') |
6977 | { | |
0aa7f586 | 6978 | if (!bfd_set_start_address (link_info.output_bfd, val)) |
df5f2391 | 6979 | einfo (_("%F%P: can't set start address\n")); |
252b5132 RH |
6980 | } |
6981 | else | |
6982 | { | |
6983 | asection *ts; | |
6984 | ||
6985 | /* Can't find the entry symbol, and it's not a number. Use | |
6986 | the first address in the text section. */ | |
f13a99db | 6987 | ts = bfd_get_section_by_name (link_info.output_bfd, entry_section); |
1579bae1 | 6988 | if (ts != NULL) |
252b5132 RH |
6989 | { |
6990 | if (warn) | |
6feb9908 AM |
6991 | einfo (_("%P: warning: cannot find entry symbol %s;" |
6992 | " defaulting to %V\n"), | |
e3e942e9 | 6993 | entry_symbol.name, |
fd361982 AM |
6994 | bfd_section_vma (ts)); |
6995 | if (!bfd_set_start_address (link_info.output_bfd, | |
6996 | bfd_section_vma (ts))) | |
df5f2391 | 6997 | einfo (_("%F%P: can't set start address\n")); |
252b5132 RH |
6998 | } |
6999 | else | |
7000 | { | |
7001 | if (warn) | |
6feb9908 AM |
7002 | einfo (_("%P: warning: cannot find entry symbol %s;" |
7003 | " not setting start address\n"), | |
e3e942e9 | 7004 | entry_symbol.name); |
252b5132 RH |
7005 | } |
7006 | } | |
7007 | } | |
7008 | } | |
7009 | ||
7010 | /* This is a small function used when we want to ignore errors from | |
7011 | BFD. */ | |
7012 | ||
7013 | static void | |
52d45da3 AM |
7014 | ignore_bfd_errors (const char *fmt ATTRIBUTE_UNUSED, |
7015 | va_list ap ATTRIBUTE_UNUSED) | |
252b5132 RH |
7016 | { |
7017 | /* Don't do anything. */ | |
7018 | } | |
7019 | ||
7020 | /* Check that the architecture of all the input files is compatible | |
7021 | with the output file. Also call the backend to let it do any | |
7022 | other checking that is needed. */ | |
7023 | ||
7024 | static void | |
1579bae1 | 7025 | lang_check (void) |
252b5132 | 7026 | { |
36983a93 | 7027 | lang_input_statement_type *file; |
252b5132 | 7028 | bfd *input_bfd; |
5f992e62 | 7029 | const bfd_arch_info_type *compatible; |
252b5132 | 7030 | |
8ce18f9c | 7031 | for (file = (void *) file_chain.head; |
36983a93 AM |
7032 | file != NULL; |
7033 | file = file->next) | |
252b5132 | 7034 | { |
0381901e | 7035 | #if BFD_SUPPORTS_PLUGINS |
422b6f14 | 7036 | /* Don't check format of files claimed by plugin. */ |
36983a93 | 7037 | if (file->flags.claimed) |
422b6f14 | 7038 | continue; |
0381901e | 7039 | #endif /* BFD_SUPPORTS_PLUGINS */ |
36983a93 | 7040 | input_bfd = file->the_bfd; |
6feb9908 | 7041 | compatible |
f13a99db | 7042 | = bfd_arch_get_compatible (input_bfd, link_info.output_bfd, |
6feb9908 | 7043 | command_line.accept_unknown_input_arch); |
30cba025 AM |
7044 | |
7045 | /* In general it is not possible to perform a relocatable | |
7046 | link between differing object formats when the input | |
7047 | file has relocations, because the relocations in the | |
7048 | input format may not have equivalent representations in | |
7049 | the output format (and besides BFD does not translate | |
7050 | relocs for other link purposes than a final link). */ | |
f437dadd AM |
7051 | if (!file->flags.just_syms |
7052 | && (bfd_link_relocatable (&link_info) | |
7053 | || link_info.emitrelocations) | |
30cba025 | 7054 | && (compatible == NULL |
f13a99db AM |
7055 | || (bfd_get_flavour (input_bfd) |
7056 | != bfd_get_flavour (link_info.output_bfd))) | |
30cba025 AM |
7057 | && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0) |
7058 | { | |
df5f2391 | 7059 | einfo (_("%F%P: relocatable linking with relocations from" |
871b3ab2 | 7060 | " format %s (%pB) to format %s (%pB) is not supported\n"), |
30cba025 | 7061 | bfd_get_target (input_bfd), input_bfd, |
f13a99db | 7062 | bfd_get_target (link_info.output_bfd), link_info.output_bfd); |
30cba025 AM |
7063 | /* einfo with %F exits. */ |
7064 | } | |
7065 | ||
252b5132 RH |
7066 | if (compatible == NULL) |
7067 | { | |
7068 | if (command_line.warn_mismatch) | |
df5f2391 | 7069 | einfo (_("%X%P: %s architecture of input file `%pB'" |
6feb9908 | 7070 | " is incompatible with %s output\n"), |
252b5132 | 7071 | bfd_printable_name (input_bfd), input_bfd, |
f13a99db | 7072 | bfd_printable_name (link_info.output_bfd)); |
252b5132 | 7073 | } |
b9247304 | 7074 | |
a8acd6ee AM |
7075 | /* If the input bfd has no contents, it shouldn't set the |
7076 | private data of the output bfd. */ | |
f437dadd AM |
7077 | else if (!file->flags.just_syms |
7078 | && ((input_bfd->flags & DYNAMIC) != 0 | |
7079 | || bfd_count_sections (input_bfd) != 0)) | |
a8acd6ee | 7080 | { |
252b5132 RH |
7081 | bfd_error_handler_type pfn = NULL; |
7082 | ||
7083 | /* If we aren't supposed to warn about mismatched input | |
afd7a018 AM |
7084 | files, temporarily set the BFD error handler to a |
7085 | function which will do nothing. We still want to call | |
7086 | bfd_merge_private_bfd_data, since it may set up | |
7087 | information which is needed in the output file. */ | |
0aa7f586 | 7088 | if (!command_line.warn_mismatch) |
252b5132 | 7089 | pfn = bfd_set_error_handler (ignore_bfd_errors); |
50e03d47 | 7090 | if (!bfd_merge_private_bfd_data (input_bfd, &link_info)) |
252b5132 RH |
7091 | { |
7092 | if (command_line.warn_mismatch) | |
df5f2391 | 7093 | einfo (_("%X%P: failed to merge target specific data" |
871b3ab2 | 7094 | " of file %pB\n"), input_bfd); |
252b5132 | 7095 | } |
0aa7f586 | 7096 | if (!command_line.warn_mismatch) |
252b5132 RH |
7097 | bfd_set_error_handler (pfn); |
7098 | } | |
7099 | } | |
7100 | } | |
7101 | ||
7102 | /* Look through all the global common symbols and attach them to the | |
7103 | correct section. The -sort-common command line switch may be used | |
de7dd2bd | 7104 | to roughly sort the entries by alignment. */ |
252b5132 RH |
7105 | |
7106 | static void | |
1579bae1 | 7107 | lang_common (void) |
252b5132 | 7108 | { |
a4819f54 | 7109 | if (link_info.inhibit_common_definition) |
4818e05f | 7110 | return; |
0e1862bb | 7111 | if (bfd_link_relocatable (&link_info) |
0aa7f586 | 7112 | && !command_line.force_common_definition) |
252b5132 RH |
7113 | return; |
7114 | ||
0aa7f586 | 7115 | if (!config.sort_common) |
1579bae1 | 7116 | bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL); |
252b5132 RH |
7117 | else |
7118 | { | |
de7dd2bd NC |
7119 | unsigned int power; |
7120 | ||
7121 | if (config.sort_common == sort_descending) | |
967928e9 AM |
7122 | { |
7123 | for (power = 4; power > 0; power--) | |
7124 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
7125 | ||
7126 | power = 0; | |
7127 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
7128 | } | |
de7dd2bd | 7129 | else |
967928e9 AM |
7130 | { |
7131 | for (power = 0; power <= 4; power++) | |
7132 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); | |
252b5132 | 7133 | |
2dc0e7b4 | 7134 | power = (unsigned int) -1; |
de7dd2bd NC |
7135 | bfd_link_hash_traverse (link_info.hash, lang_one_common, &power); |
7136 | } | |
252b5132 RH |
7137 | } |
7138 | } | |
7139 | ||
7140 | /* Place one common symbol in the correct section. */ | |
7141 | ||
f38a2680 | 7142 | static bool |
1579bae1 | 7143 | lang_one_common (struct bfd_link_hash_entry *h, void *info) |
252b5132 RH |
7144 | { |
7145 | unsigned int power_of_two; | |
7146 | bfd_vma size; | |
7147 | asection *section; | |
7148 | ||
7149 | if (h->type != bfd_link_hash_common) | |
f38a2680 | 7150 | return true; |
252b5132 RH |
7151 | |
7152 | size = h->u.c.size; | |
7153 | power_of_two = h->u.c.p->alignment_power; | |
7154 | ||
de7dd2bd NC |
7155 | if (config.sort_common == sort_descending |
7156 | && power_of_two < *(unsigned int *) info) | |
f38a2680 | 7157 | return true; |
de7dd2bd | 7158 | else if (config.sort_common == sort_ascending |
967928e9 | 7159 | && power_of_two > *(unsigned int *) info) |
f38a2680 | 7160 | return true; |
252b5132 RH |
7161 | |
7162 | section = h->u.c.p->section; | |
3023e3f6 | 7163 | if (!bfd_define_common_symbol (link_info.output_bfd, &link_info, h)) |
df5f2391 | 7164 | einfo (_("%F%P: could not define common symbol `%pT': %E\n"), |
3023e3f6 | 7165 | h->root.string); |
252b5132 RH |
7166 | |
7167 | if (config.map_file != NULL) | |
7168 | { | |
f38a2680 | 7169 | static bool header_printed; |
252b5132 RH |
7170 | int len; |
7171 | char *name; | |
7172 | char buf[50]; | |
7173 | ||
0aa7f586 | 7174 | if (!header_printed) |
252b5132 RH |
7175 | { |
7176 | minfo (_("\nAllocating common symbols\n")); | |
7177 | minfo (_("Common symbol size file\n\n")); | |
f38a2680 | 7178 | header_printed = true; |
252b5132 RH |
7179 | } |
7180 | ||
f13a99db | 7181 | name = bfd_demangle (link_info.output_bfd, h->root.string, |
73705ac3 | 7182 | DMGL_ANSI | DMGL_PARAMS); |
d7d4c8de AM |
7183 | if (name == NULL) |
7184 | { | |
7185 | minfo ("%s", h->root.string); | |
7186 | len = strlen (h->root.string); | |
7187 | } | |
7188 | else | |
7189 | { | |
7190 | minfo ("%s", name); | |
7191 | len = strlen (name); | |
7192 | free (name); | |
7193 | } | |
252b5132 RH |
7194 | |
7195 | if (len >= 19) | |
7196 | { | |
7197 | print_nl (); | |
7198 | len = 0; | |
7199 | } | |
7200 | while (len < 20) | |
7201 | { | |
7202 | print_space (); | |
7203 | ++len; | |
7204 | } | |
7205 | ||
7206 | minfo ("0x"); | |
7207 | if (size <= 0xffffffff) | |
7208 | sprintf (buf, "%lx", (unsigned long) size); | |
7209 | else | |
7210 | sprintf_vma (buf, size); | |
7211 | minfo ("%s", buf); | |
7212 | len = strlen (buf); | |
7213 | ||
7214 | while (len < 16) | |
7215 | { | |
7216 | print_space (); | |
7217 | ++len; | |
7218 | } | |
7219 | ||
871b3ab2 | 7220 | minfo ("%pB\n", section->owner); |
252b5132 RH |
7221 | } |
7222 | ||
f38a2680 | 7223 | return true; |
252b5132 RH |
7224 | } |
7225 | ||
c005eb9e AB |
7226 | /* Handle a single orphan section S, placing the orphan into an appropriate |
7227 | output section. The effects of the --orphan-handling command line | |
7228 | option are handled here. */ | |
7229 | ||
7230 | static void | |
7231 | ldlang_place_orphan (asection *s) | |
7232 | { | |
7233 | if (config.orphan_handling == orphan_handling_discard) | |
7234 | { | |
7235 | lang_output_section_statement_type *os; | |
21401fc7 | 7236 | os = lang_output_section_statement_lookup (DISCARD_SECTION_NAME, 0, 1); |
c005eb9e AB |
7237 | if (os->addr_tree == NULL |
7238 | && (bfd_link_relocatable (&link_info) | |
7239 | || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)) | |
7240 | os->addr_tree = exp_intop (0); | |
b209b5a6 | 7241 | lang_add_section (&os->children, s, NULL, NULL, os); |
c005eb9e AB |
7242 | } |
7243 | else | |
7244 | { | |
7245 | lang_output_section_statement_type *os; | |
7246 | const char *name = s->name; | |
7247 | int constraint = 0; | |
7248 | ||
7249 | if (config.orphan_handling == orphan_handling_error) | |
df5f2391 | 7250 | einfo (_("%X%P: error: unplaced orphan section `%pA' from `%pB'\n"), |
c005eb9e AB |
7251 | s, s->owner); |
7252 | ||
7253 | if (config.unique_orphan_sections || unique_section_p (s, NULL)) | |
7254 | constraint = SPECIAL; | |
7255 | ||
7256 | os = ldemul_place_orphan (s, name, constraint); | |
7257 | if (os == NULL) | |
7258 | { | |
21401fc7 | 7259 | os = lang_output_section_statement_lookup (name, constraint, 1); |
c005eb9e AB |
7260 | if (os->addr_tree == NULL |
7261 | && (bfd_link_relocatable (&link_info) | |
7262 | || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)) | |
7263 | os->addr_tree = exp_intop (0); | |
b209b5a6 | 7264 | lang_add_section (&os->children, s, NULL, NULL, os); |
c005eb9e AB |
7265 | } |
7266 | ||
7267 | if (config.orphan_handling == orphan_handling_warn) | |
871b3ab2 | 7268 | einfo (_("%P: warning: orphan section `%pA' from `%pB' being " |
df5f2391 | 7269 | "placed in section `%s'\n"), |
c005eb9e AB |
7270 | s, s->owner, os->name); |
7271 | } | |
7272 | } | |
7273 | ||
08da4cac KH |
7274 | /* Run through the input files and ensure that every input section has |
7275 | somewhere to go. If one is found without a destination then create | |
7276 | an input request and place it into the statement tree. */ | |
252b5132 RH |
7277 | |
7278 | static void | |
1579bae1 | 7279 | lang_place_orphans (void) |
252b5132 | 7280 | { |
e50d8076 | 7281 | LANG_FOR_EACH_INPUT_STATEMENT (file) |
252b5132 RH |
7282 | { |
7283 | asection *s; | |
7284 | ||
1579bae1 | 7285 | for (s = file->the_bfd->sections; s != NULL; s = s->next) |
252b5132 | 7286 | { |
1579bae1 | 7287 | if (s->output_section == NULL) |
252b5132 | 7288 | { |
396a2467 | 7289 | /* This section of the file is not attached, root |
afd7a018 | 7290 | around for a sensible place for it to go. */ |
252b5132 | 7291 | |
66be1055 | 7292 | if (file->flags.just_syms) |
1449d79b | 7293 | bfd_link_just_syms (file->the_bfd, s, &link_info); |
5b5f4e6f | 7294 | else if (lang_discard_section_p (s)) |
164e712d | 7295 | s->output_section = bfd_abs_section_ptr; |
252b5132 RH |
7296 | else if (strcmp (s->name, "COMMON") == 0) |
7297 | { | |
7298 | /* This is a lonely common section which must have | |
7299 | come from an archive. We attach to the section | |
7300 | with the wildcard. */ | |
0e1862bb | 7301 | if (!bfd_link_relocatable (&link_info) |
252b5132 RH |
7302 | || command_line.force_common_definition) |
7303 | { | |
7304 | if (default_common_section == NULL) | |
66c103b7 | 7305 | default_common_section |
21401fc7 | 7306 | = lang_output_section_statement_lookup (".bss", 0, 1); |
39dcfe18 | 7307 | lang_add_section (&default_common_section->children, s, |
b209b5a6 | 7308 | NULL, NULL, default_common_section); |
252b5132 RH |
7309 | } |
7310 | } | |
252b5132 | 7311 | else |
c005eb9e | 7312 | ldlang_place_orphan (s); |
252b5132 RH |
7313 | } |
7314 | } | |
7315 | } | |
7316 | } | |
7317 | ||
252b5132 | 7318 | void |
1579bae1 | 7319 | lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert) |
252b5132 | 7320 | { |
aa8804e4 | 7321 | flagword *ptr_flags; |
252b5132 | 7322 | |
aa8804e4 | 7323 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
f0673d20 | 7324 | |
252b5132 RH |
7325 | while (*flags) |
7326 | { | |
7327 | switch (*flags) | |
7328 | { | |
f0673d20 NC |
7329 | /* PR 17900: An exclamation mark in the attributes reverses |
7330 | the sense of any of the attributes that follow. */ | |
7331 | case '!': | |
0aa7f586 | 7332 | invert = !invert; |
f0673d20 NC |
7333 | ptr_flags = invert ? &ptr->not_flags : &ptr->flags; |
7334 | break; | |
7335 | ||
252b5132 RH |
7336 | case 'A': case 'a': |
7337 | *ptr_flags |= SEC_ALLOC; | |
7338 | break; | |
7339 | ||
7340 | case 'R': case 'r': | |
7341 | *ptr_flags |= SEC_READONLY; | |
7342 | break; | |
7343 | ||
7344 | case 'W': case 'w': | |
7345 | *ptr_flags |= SEC_DATA; | |
7346 | break; | |
7347 | ||
7348 | case 'X': case 'x': | |
7349 | *ptr_flags |= SEC_CODE; | |
7350 | break; | |
7351 | ||
7352 | case 'L': case 'l': | |
7353 | case 'I': case 'i': | |
7354 | *ptr_flags |= SEC_LOAD; | |
7355 | break; | |
7356 | ||
7357 | default: | |
df5f2391 | 7358 | einfo (_("%F%P: invalid character %c (%d) in flags\n"), |
0aa7f586 | 7359 | *flags, *flags); |
252b5132 RH |
7360 | break; |
7361 | } | |
7362 | flags++; | |
7363 | } | |
7364 | } | |
7365 | ||
d871d478 AM |
7366 | /* Call a function on each real input file. This function will be |
7367 | called on an archive, but not on the elements. */ | |
252b5132 RH |
7368 | |
7369 | void | |
1579bae1 | 7370 | lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
252b5132 RH |
7371 | { |
7372 | lang_input_statement_type *f; | |
7373 | ||
8ce18f9c | 7374 | for (f = (void *) input_file_chain.head; |
252b5132 | 7375 | f != NULL; |
36983a93 | 7376 | f = f->next_real_file) |
d871d478 AM |
7377 | if (f->flags.real) |
7378 | func (f); | |
252b5132 RH |
7379 | } |
7380 | ||
d871d478 AM |
7381 | /* Call a function on each real file. The function will be called on |
7382 | all the elements of an archive which are included in the link, but | |
7383 | will not be called on the archive file itself. */ | |
252b5132 RH |
7384 | |
7385 | void | |
1579bae1 | 7386 | lang_for_each_file (void (*func) (lang_input_statement_type *)) |
252b5132 | 7387 | { |
e50d8076 | 7388 | LANG_FOR_EACH_INPUT_STATEMENT (f) |
252b5132 | 7389 | { |
d871d478 AM |
7390 | if (f->flags.real) |
7391 | func (f); | |
252b5132 RH |
7392 | } |
7393 | } | |
7394 | ||
252b5132 | 7395 | void |
1579bae1 | 7396 | ldlang_add_file (lang_input_statement_type *entry) |
252b5132 | 7397 | { |
36983a93 | 7398 | lang_statement_append (&file_chain, entry, &entry->next); |
252b5132 RH |
7399 | |
7400 | /* The BFD linker needs to have a list of all input BFDs involved in | |
7401 | a link. */ | |
9221725d AM |
7402 | ASSERT (link_info.input_bfds_tail != &entry->the_bfd->link.next |
7403 | && entry->the_bfd->link.next == NULL); | |
f13a99db | 7404 | ASSERT (entry->the_bfd != link_info.output_bfd); |
a9a4c53e AM |
7405 | |
7406 | *link_info.input_bfds_tail = entry->the_bfd; | |
c72f2fb2 | 7407 | link_info.input_bfds_tail = &entry->the_bfd->link.next; |
00f93c44 | 7408 | bfd_set_usrdata (entry->the_bfd, entry); |
252b5132 RH |
7409 | bfd_set_gp_size (entry->the_bfd, g_switch_value); |
7410 | ||
7411 | /* Look through the sections and check for any which should not be | |
7412 | included in the link. We need to do this now, so that we can | |
7413 | notice when the backend linker tries to report multiple | |
7414 | definition errors for symbols which are in sections we aren't | |
7415 | going to link. FIXME: It might be better to entirely ignore | |
7416 | symbols which are defined in sections which are going to be | |
7417 | discarded. This would require modifying the backend linker for | |
7418 | each backend which might set the SEC_LINK_ONCE flag. If we do | |
7419 | this, we should probably handle SEC_EXCLUDE in the same way. */ | |
7420 | ||
1579bae1 | 7421 | bfd_map_over_sections (entry->the_bfd, section_already_linked, entry); |
252b5132 RH |
7422 | } |
7423 | ||
7424 | void | |
1579bae1 | 7425 | lang_add_output (const char *name, int from_script) |
252b5132 RH |
7426 | { |
7427 | /* Make -o on command line override OUTPUT in script. */ | |
7c519c12 | 7428 | if (!had_output_filename || !from_script) |
252b5132 RH |
7429 | { |
7430 | output_filename = name; | |
f38a2680 | 7431 | had_output_filename = true; |
252b5132 RH |
7432 | } |
7433 | } | |
7434 | ||
aea4bd9d | 7435 | lang_output_section_statement_type * |
1579bae1 AM |
7436 | lang_enter_output_section_statement (const char *output_section_statement_name, |
7437 | etree_type *address_exp, | |
7438 | enum section_type sectype, | |
1579bae1 AM |
7439 | etree_type *align, |
7440 | etree_type *subalign, | |
0841712e | 7441 | etree_type *ebase, |
1eec346e NC |
7442 | int constraint, |
7443 | int align_with_input) | |
252b5132 RH |
7444 | { |
7445 | lang_output_section_statement_type *os; | |
7446 | ||
66c103b7 | 7447 | os = lang_output_section_statement_lookup (output_section_statement_name, |
21401fc7 | 7448 | constraint, 2); |
967928e9 | 7449 | current_section = os; |
252b5132 | 7450 | |
1579bae1 | 7451 | if (os->addr_tree == NULL) |
08da4cac KH |
7452 | { |
7453 | os->addr_tree = address_exp; | |
7454 | } | |
252b5132 RH |
7455 | os->sectype = sectype; |
7456 | if (sectype != noload_section) | |
7457 | os->flags = SEC_NO_FLAGS; | |
7458 | else | |
7459 | os->flags = SEC_NEVER_LOAD; | |
e5caa5e0 | 7460 | os->block_value = 1; |
66c103b7 AM |
7461 | |
7462 | /* Make next things chain into subchain of this. */ | |
bde18da4 | 7463 | push_stat_ptr (&os->children); |
252b5132 | 7464 | |
1eec346e NC |
7465 | os->align_lma_with_input = align_with_input == ALIGN_WITH_INPUT; |
7466 | if (os->align_lma_with_input && align != NULL) | |
c1c8c1ef | 7467 | einfo (_("%F%P:%pS: error: align with input and explicit align specified\n"), |
0aa7f586 | 7468 | NULL); |
1eec346e | 7469 | |
3d9c8f6b AM |
7470 | os->subsection_alignment = subalign; |
7471 | os->section_alignment = align; | |
252b5132 RH |
7472 | |
7473 | os->load_base = ebase; | |
aea4bd9d | 7474 | return os; |
252b5132 RH |
7475 | } |
7476 | ||
252b5132 | 7477 | void |
1579bae1 | 7478 | lang_final (void) |
252b5132 | 7479 | { |
d3ce72d0 NC |
7480 | lang_output_statement_type *new_stmt; |
7481 | ||
7482 | new_stmt = new_stat (lang_output_statement, stat_ptr); | |
7483 | new_stmt->name = output_filename; | |
252b5132 RH |
7484 | } |
7485 | ||
08da4cac KH |
7486 | /* Reset the current counters in the regions. */ |
7487 | ||
e3dc8847 | 7488 | void |
1579bae1 | 7489 | lang_reset_memory_regions (void) |
252b5132 RH |
7490 | { |
7491 | lang_memory_region_type *p = lang_memory_region_list; | |
b3327aad | 7492 | asection *o; |
e9ee469a | 7493 | lang_output_section_statement_type *os; |
252b5132 | 7494 | |
1579bae1 | 7495 | for (p = lang_memory_region_list; p != NULL; p = p->next) |
252b5132 | 7496 | { |
252b5132 | 7497 | p->current = p->origin; |
66e28d60 | 7498 | p->last_os = NULL; |
252b5132 | 7499 | } |
b3327aad | 7500 | |
8ce18f9c | 7501 | for (os = (void *) lang_os_list.head; |
e9ee469a AM |
7502 | os != NULL; |
7503 | os = os->next) | |
cde9e0be | 7504 | { |
f38a2680 AM |
7505 | os->processed_vma = false; |
7506 | os->processed_lma = false; | |
cde9e0be | 7507 | } |
e9ee469a | 7508 | |
f13a99db | 7509 | for (o = link_info.output_bfd->sections; o != NULL; o = o->next) |
1a23a9e6 AM |
7510 | { |
7511 | /* Save the last size for possible use by bfd_relax_section. */ | |
7512 | o->rawsize = o->size; | |
8772de11 MR |
7513 | if (!(o->flags & SEC_FIXED_SIZE)) |
7514 | o->size = 0; | |
1a23a9e6 | 7515 | } |
252b5132 RH |
7516 | } |
7517 | ||
164e712d | 7518 | /* Worker for lang_gc_sections_1. */ |
252b5132 RH |
7519 | |
7520 | static void | |
1579bae1 | 7521 | gc_section_callback (lang_wild_statement_type *ptr, |
b209b5a6 | 7522 | struct wildcard_list *sec ATTRIBUTE_UNUSED, |
1579bae1 AM |
7523 | asection *section, |
7524 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
7525 | void *data ATTRIBUTE_UNUSED) | |
252b5132 | 7526 | { |
164e712d AM |
7527 | /* If the wild pattern was marked KEEP, the member sections |
7528 | should be as well. */ | |
4dec4d4e RH |
7529 | if (ptr->keep_sections) |
7530 | section->flags |= SEC_KEEP; | |
252b5132 RH |
7531 | } |
7532 | ||
252b5132 RH |
7533 | /* Iterate over sections marking them against GC. */ |
7534 | ||
7535 | static void | |
1579bae1 | 7536 | lang_gc_sections_1 (lang_statement_union_type *s) |
252b5132 | 7537 | { |
1579bae1 | 7538 | for (; s != NULL; s = s->header.next) |
252b5132 RH |
7539 | { |
7540 | switch (s->header.type) | |
7541 | { | |
7542 | case lang_wild_statement_enum: | |
164e712d | 7543 | walk_wild (&s->wild_statement, gc_section_callback, NULL); |
abc6ab0a | 7544 | break; |
252b5132 RH |
7545 | case lang_constructors_statement_enum: |
7546 | lang_gc_sections_1 (constructor_list.head); | |
7547 | break; | |
7548 | case lang_output_section_statement_enum: | |
7549 | lang_gc_sections_1 (s->output_section_statement.children.head); | |
7550 | break; | |
7551 | case lang_group_statement_enum: | |
7552 | lang_gc_sections_1 (s->group_statement.children.head); | |
7553 | break; | |
7554 | default: | |
7555 | break; | |
7556 | } | |
7557 | } | |
7558 | } | |
7559 | ||
7560 | static void | |
1579bae1 | 7561 | lang_gc_sections (void) |
252b5132 | 7562 | { |
252b5132 | 7563 | /* Keep all sections so marked in the link script. */ |
252b5132 RH |
7564 | lang_gc_sections_1 (statement_list.head); |
7565 | ||
9ca57817 | 7566 | /* SEC_EXCLUDE is ignored when doing a relocatable link, except in |
15407e7e | 7567 | the special case of .stabstr debug info. (See bfd/stabs.c) |
9ca57817 | 7568 | Twiddle the flag here, to simplify later linker code. */ |
0e1862bb | 7569 | if (bfd_link_relocatable (&link_info)) |
9ca57817 AM |
7570 | { |
7571 | LANG_FOR_EACH_INPUT_STATEMENT (f) | |
7572 | { | |
7573 | asection *sec; | |
0381901e | 7574 | #if BFD_SUPPORTS_PLUGINS |
66be1055 | 7575 | if (f->flags.claimed) |
9e2278f5 AM |
7576 | continue; |
7577 | #endif | |
9ca57817 | 7578 | for (sec = f->the_bfd->sections; sec != NULL; sec = sec->next) |
15407e7e AM |
7579 | if ((sec->flags & SEC_DEBUGGING) == 0 |
7580 | || strcmp (sec->name, ".stabstr") != 0) | |
9ca57817 AM |
7581 | sec->flags &= ~SEC_EXCLUDE; |
7582 | } | |
7583 | } | |
7584 | ||
57316bff | 7585 | if (link_info.gc_sections) |
f13a99db | 7586 | bfd_gc_sections (link_info.output_bfd, &link_info); |
252b5132 RH |
7587 | } |
7588 | ||
b10a8ae0 L |
7589 | /* Worker for lang_find_relro_sections_1. */ |
7590 | ||
7591 | static void | |
7592 | find_relro_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED, | |
7593 | struct wildcard_list *sec ATTRIBUTE_UNUSED, | |
7594 | asection *section, | |
7595 | lang_input_statement_type *file ATTRIBUTE_UNUSED, | |
7596 | void *data) | |
7597 | { | |
7598 | /* Discarded, excluded and ignored sections effectively have zero | |
7599 | size. */ | |
7600 | if (section->output_section != NULL | |
f13a99db | 7601 | && section->output_section->owner == link_info.output_bfd |
b10a8ae0 L |
7602 | && (section->output_section->flags & SEC_EXCLUDE) == 0 |
7603 | && !IGNORE_SECTION (section) | |
7604 | && section->size != 0) | |
7605 | { | |
f38a2680 AM |
7606 | bool *has_relro_section = (bool *) data; |
7607 | *has_relro_section = true; | |
b10a8ae0 L |
7608 | } |
7609 | } | |
7610 | ||
7611 | /* Iterate over sections for relro sections. */ | |
7612 | ||
7613 | static void | |
7614 | lang_find_relro_sections_1 (lang_statement_union_type *s, | |
ed1794ee | 7615 | seg_align_type *seg, |
f38a2680 | 7616 | bool *has_relro_section) |
b10a8ae0 L |
7617 | { |
7618 | if (*has_relro_section) | |
7619 | return; | |
7620 | ||
7621 | for (; s != NULL; s = s->header.next) | |
7622 | { | |
ed1794ee | 7623 | if (s == seg->relro_end_stat) |
b10a8ae0 L |
7624 | break; |
7625 | ||
7626 | switch (s->header.type) | |
7627 | { | |
7628 | case lang_wild_statement_enum: | |
7629 | walk_wild (&s->wild_statement, | |
7630 | find_relro_section_callback, | |
7631 | has_relro_section); | |
7632 | break; | |
7633 | case lang_constructors_statement_enum: | |
7634 | lang_find_relro_sections_1 (constructor_list.head, | |
ed1794ee | 7635 | seg, has_relro_section); |
b10a8ae0 L |
7636 | break; |
7637 | case lang_output_section_statement_enum: | |
7638 | lang_find_relro_sections_1 (s->output_section_statement.children.head, | |
ed1794ee | 7639 | seg, has_relro_section); |
b10a8ae0 L |
7640 | break; |
7641 | case lang_group_statement_enum: | |
7642 | lang_find_relro_sections_1 (s->group_statement.children.head, | |
ed1794ee | 7643 | seg, has_relro_section); |
b10a8ae0 L |
7644 | break; |
7645 | default: | |
7646 | break; | |
7647 | } | |
7648 | } | |
7649 | } | |
7650 | ||
7651 | static void | |
7652 | lang_find_relro_sections (void) | |
7653 | { | |
f38a2680 | 7654 | bool has_relro_section = false; |
b10a8ae0 L |
7655 | |
7656 | /* Check all sections in the link script. */ | |
7657 | ||
7658 | lang_find_relro_sections_1 (expld.dataseg.relro_start_stat, | |
ed1794ee | 7659 | &expld.dataseg, &has_relro_section); |
b10a8ae0 L |
7660 | |
7661 | if (!has_relro_section) | |
f38a2680 | 7662 | link_info.relro = false; |
b10a8ae0 L |
7663 | } |
7664 | ||
fbbc3759 L |
7665 | /* Relax all sections until bfd_relax_section gives up. */ |
7666 | ||
eaeb0a9d | 7667 | void |
f38a2680 | 7668 | lang_relax_sections (bool need_layout) |
fbbc3759 | 7669 | { |
28d5f677 | 7670 | if (RELAXATION_ENABLED) |
fbbc3759 | 7671 | { |
eaeb0a9d AM |
7672 | /* We may need more than one relaxation pass. */ |
7673 | int i = link_info.relax_pass; | |
fbbc3759 | 7674 | |
eaeb0a9d AM |
7675 | /* The backend can use it to determine the current pass. */ |
7676 | link_info.relax_pass = 0; | |
fbbc3759 | 7677 | |
eaeb0a9d AM |
7678 | while (i--) |
7679 | { | |
7680 | /* Keep relaxing until bfd_relax_section gives up. */ | |
f38a2680 | 7681 | bool relax_again; |
fbbc3759 | 7682 | |
eaeb0a9d AM |
7683 | link_info.relax_trip = -1; |
7684 | do | |
7685 | { | |
7686 | link_info.relax_trip++; | |
7687 | ||
7688 | /* Note: pe-dll.c does something like this also. If you find | |
7689 | you need to change this code, you probably need to change | |
7690 | pe-dll.c also. DJ */ | |
7691 | ||
7692 | /* Do all the assignments with our current guesses as to | |
7693 | section sizes. */ | |
2f65ac72 | 7694 | lang_do_assignments (lang_assigning_phase_enum); |
eaeb0a9d AM |
7695 | |
7696 | /* We must do this after lang_do_assignments, because it uses | |
7697 | size. */ | |
7698 | lang_reset_memory_regions (); | |
7699 | ||
7700 | /* Perform another relax pass - this time we know where the | |
7701 | globals are, so can make a better guess. */ | |
f38a2680 AM |
7702 | relax_again = false; |
7703 | lang_size_sections (&relax_again, false); | |
eaeb0a9d AM |
7704 | } |
7705 | while (relax_again); | |
7706 | ||
7707 | link_info.relax_pass++; | |
7708 | } | |
f38a2680 | 7709 | need_layout = true; |
eaeb0a9d | 7710 | } |
fbbc3759 | 7711 | |
eaeb0a9d AM |
7712 | if (need_layout) |
7713 | { | |
7714 | /* Final extra sizing to report errors. */ | |
2f65ac72 | 7715 | lang_do_assignments (lang_assigning_phase_enum); |
eaeb0a9d | 7716 | lang_reset_memory_regions (); |
f38a2680 | 7717 | lang_size_sections (NULL, true); |
fbbc3759 | 7718 | } |
fbbc3759 L |
7719 | } |
7720 | ||
0381901e | 7721 | #if BFD_SUPPORTS_PLUGINS |
8543fde5 DK |
7722 | /* Find the insert point for the plugin's replacement files. We |
7723 | place them after the first claimed real object file, or if the | |
7724 | first claimed object is an archive member, after the last real | |
7725 | object file immediately preceding the archive. In the event | |
7726 | no objects have been claimed at all, we return the first dummy | |
7727 | object file on the list as the insert point; that works, but | |
7728 | the callee must be careful when relinking the file_chain as it | |
7729 | is not actually on that chain, only the statement_list and the | |
7730 | input_file list; in that case, the replacement files must be | |
7731 | inserted at the head of the file_chain. */ | |
7732 | ||
7733 | static lang_input_statement_type * | |
f38a2680 | 7734 | find_replacements_insert_point (bool *before) |
8543fde5 DK |
7735 | { |
7736 | lang_input_statement_type *claim1, *lastobject; | |
8ce18f9c AM |
7737 | lastobject = (void *) input_file_chain.head; |
7738 | for (claim1 = (void *) file_chain.head; | |
8543fde5 | 7739 | claim1 != NULL; |
36983a93 | 7740 | claim1 = claim1->next) |
8543fde5 | 7741 | { |
66be1055 | 7742 | if (claim1->flags.claimed) |
128bf1fe AM |
7743 | { |
7744 | *before = claim1->flags.claim_archive; | |
7745 | return claim1->flags.claim_archive ? lastobject : claim1; | |
7746 | } | |
8543fde5 | 7747 | /* Update lastobject if this is a real object file. */ |
0aa7f586 | 7748 | if (claim1->the_bfd != NULL && claim1->the_bfd->my_archive == NULL) |
8543fde5 DK |
7749 | lastobject = claim1; |
7750 | } | |
7751 | /* No files were claimed by the plugin. Choose the last object | |
7752 | file found on the list (maybe the first, dummy entry) as the | |
7753 | insert point. */ | |
f38a2680 | 7754 | *before = false; |
8543fde5 DK |
7755 | return lastobject; |
7756 | } | |
9e2278f5 | 7757 | |
1fa4ec6a AM |
7758 | /* Find where to insert ADD, an archive element or shared library |
7759 | added during a rescan. */ | |
7760 | ||
36983a93 | 7761 | static lang_input_statement_type ** |
1fa4ec6a AM |
7762 | find_rescan_insertion (lang_input_statement_type *add) |
7763 | { | |
7764 | bfd *add_bfd = add->the_bfd; | |
7765 | lang_input_statement_type *f; | |
7766 | lang_input_statement_type *last_loaded = NULL; | |
7767 | lang_input_statement_type *before = NULL; | |
36983a93 | 7768 | lang_input_statement_type **iter = NULL; |
1fa4ec6a AM |
7769 | |
7770 | if (add_bfd->my_archive != NULL) | |
7771 | add_bfd = add_bfd->my_archive; | |
7772 | ||
7773 | /* First look through the input file chain, to find an object file | |
7774 | before the one we've rescanned. Normal object files always | |
7775 | appear on both the input file chain and the file chain, so this | |
7776 | lets us get quickly to somewhere near the correct place on the | |
7777 | file chain if it is full of archive elements. Archives don't | |
7778 | appear on the file chain, but if an element has been extracted | |
7779 | then their input_statement->next points at it. */ | |
8ce18f9c | 7780 | for (f = (void *) input_file_chain.head; |
1fa4ec6a | 7781 | f != NULL; |
36983a93 | 7782 | f = f->next_real_file) |
1fa4ec6a AM |
7783 | { |
7784 | if (f->the_bfd == add_bfd) | |
7785 | { | |
7786 | before = last_loaded; | |
7787 | if (f->next != NULL) | |
36983a93 | 7788 | return &f->next->next; |
1fa4ec6a AM |
7789 | } |
7790 | if (f->the_bfd != NULL && f->next != NULL) | |
7791 | last_loaded = f; | |
7792 | } | |
7793 | ||
7794 | for (iter = before ? &before->next : &file_chain.head->input_statement.next; | |
7795 | *iter != NULL; | |
36983a93 AM |
7796 | iter = &(*iter)->next) |
7797 | if (!(*iter)->flags.claim_archive | |
7798 | && (*iter)->the_bfd->my_archive == NULL) | |
1fa4ec6a AM |
7799 | break; |
7800 | ||
7801 | return iter; | |
7802 | } | |
7803 | ||
9e2278f5 AM |
7804 | /* Insert SRCLIST into DESTLIST after given element by chaining |
7805 | on FIELD as the next-pointer. (Counterintuitively does not need | |
7806 | a pointer to the actual after-node itself, just its chain field.) */ | |
7807 | ||
7808 | static void | |
7809 | lang_list_insert_after (lang_statement_list_type *destlist, | |
7810 | lang_statement_list_type *srclist, | |
7811 | lang_statement_union_type **field) | |
7812 | { | |
7813 | *(srclist->tail) = *field; | |
7814 | *field = srclist->head; | |
7815 | if (destlist->tail == field) | |
7816 | destlist->tail = srclist->tail; | |
7817 | } | |
7818 | ||
7819 | /* Detach new nodes added to DESTLIST since the time ORIGLIST | |
7820 | was taken as a copy of it and leave them in ORIGLIST. */ | |
7821 | ||
7822 | static void | |
7823 | lang_list_remove_tail (lang_statement_list_type *destlist, | |
7824 | lang_statement_list_type *origlist) | |
7825 | { | |
7826 | union lang_statement_union **savetail; | |
7827 | /* Check that ORIGLIST really is an earlier state of DESTLIST. */ | |
7828 | ASSERT (origlist->head == destlist->head); | |
7829 | savetail = origlist->tail; | |
7830 | origlist->head = *(savetail); | |
7831 | origlist->tail = destlist->tail; | |
7832 | destlist->tail = savetail; | |
7833 | *savetail = NULL; | |
7834 | } | |
128bf1fe AM |
7835 | |
7836 | static lang_statement_union_type ** | |
7837 | find_next_input_statement (lang_statement_union_type **s) | |
7838 | { | |
7839 | for ( ; *s; s = &(*s)->header.next) | |
7840 | { | |
7841 | lang_statement_union_type **t; | |
7842 | switch ((*s)->header.type) | |
7843 | { | |
7844 | case lang_input_statement_enum: | |
7845 | return s; | |
7846 | case lang_wild_statement_enum: | |
7847 | t = &(*s)->wild_statement.children.head; | |
7848 | break; | |
7849 | case lang_group_statement_enum: | |
7850 | t = &(*s)->group_statement.children.head; | |
7851 | break; | |
7852 | case lang_output_section_statement_enum: | |
7853 | t = &(*s)->output_section_statement.children.head; | |
7854 | break; | |
7855 | default: | |
7856 | continue; | |
7857 | } | |
7858 | t = find_next_input_statement (t); | |
7859 | if (*t) | |
7860 | return t; | |
7861 | } | |
7862 | return s; | |
7863 | } | |
0381901e | 7864 | #endif /* BFD_SUPPORTS_PLUGINS */ |
8543fde5 | 7865 | |
4153b6db NC |
7866 | /* Add NAME to the list of garbage collection entry points. */ |
7867 | ||
7868 | void | |
0aa7f586 | 7869 | lang_add_gc_name (const char *name) |
4153b6db NC |
7870 | { |
7871 | struct bfd_sym_chain *sym; | |
7872 | ||
7873 | if (name == NULL) | |
7874 | return; | |
7875 | ||
988de25b | 7876 | sym = stat_alloc (sizeof (*sym)); |
4153b6db NC |
7877 | |
7878 | sym->next = link_info.gc_sym_list; | |
7879 | sym->name = name; | |
7880 | link_info.gc_sym_list = sym; | |
7881 | } | |
7882 | ||
fbf05aa7 L |
7883 | /* Check relocations. */ |
7884 | ||
7885 | static void | |
7886 | lang_check_relocs (void) | |
7887 | { | |
4f3b23b3 | 7888 | if (link_info.check_relocs_after_open_input) |
fbf05aa7 L |
7889 | { |
7890 | bfd *abfd; | |
7891 | ||
7892 | for (abfd = link_info.input_bfds; | |
7893 | abfd != (bfd *) NULL; abfd = abfd->link.next) | |
4f3b23b3 | 7894 | if (!bfd_link_check_relocs (abfd, &link_info)) |
fbf05aa7 | 7895 | { |
4f3b23b3 | 7896 | /* No object output, fail return. */ |
f38a2680 | 7897 | config.make_executable = false; |
4f3b23b3 NC |
7898 | /* Note: we do not abort the loop, but rather |
7899 | continue the scan in case there are other | |
7900 | bad relocations to report. */ | |
fbf05aa7 L |
7901 | } |
7902 | } | |
7903 | } | |
7904 | ||
77f5e65e AB |
7905 | /* Look through all output sections looking for places where we can |
7906 | propagate forward the lma region. */ | |
7907 | ||
7908 | static void | |
7909 | lang_propagate_lma_regions (void) | |
7910 | { | |
7911 | lang_output_section_statement_type *os; | |
7912 | ||
8ce18f9c | 7913 | for (os = (void *) lang_os_list.head; |
77f5e65e AB |
7914 | os != NULL; |
7915 | os = os->next) | |
7916 | { | |
7917 | if (os->prev != NULL | |
7918 | && os->lma_region == NULL | |
7919 | && os->load_base == NULL | |
7920 | && os->addr_tree == NULL | |
7921 | && os->region == os->prev->region) | |
7922 | os->lma_region = os->prev->lma_region; | |
7923 | } | |
7924 | } | |
7925 | ||
252b5132 | 7926 | void |
1579bae1 | 7927 | lang_process (void) |
252b5132 | 7928 | { |
55255dae | 7929 | /* Finalize dynamic list. */ |
40b36307 L |
7930 | if (link_info.dynamic_list) |
7931 | lang_finalize_version_expr_head (&link_info.dynamic_list->head); | |
55255dae | 7932 | |
252b5132 RH |
7933 | current_target = default_target; |
7934 | ||
08da4cac KH |
7935 | /* Open the output file. */ |
7936 | lang_for_each_statement (ldlang_open_output); | |
61826503 | 7937 | init_opb (NULL); |
252b5132 RH |
7938 | |
7939 | ldemul_create_output_section_statements (); | |
7940 | ||
08da4cac | 7941 | /* Add to the hash table all undefineds on the command line. */ |
252b5132 RH |
7942 | lang_place_undefineds (); |
7943 | ||
082b7297 | 7944 | if (!bfd_section_already_linked_table_init ()) |
df5f2391 | 7945 | einfo (_("%F%P: can not create hash table: %E\n")); |
9503fd87 | 7946 | |
874ef038 AB |
7947 | /* A first pass through the memory regions ensures that if any region |
7948 | references a symbol for its origin or length then this symbol will be | |
7949 | added to the symbol table. Having these symbols in the symbol table | |
7950 | means that when we call open_input_bfds PROVIDE statements will | |
7951 | trigger to provide any needed symbols. The regions origins and | |
7952 | lengths are not assigned as a result of this call. */ | |
f38a2680 | 7953 | lang_do_memory_regions (false); |
874ef038 | 7954 | |
08da4cac | 7955 | /* Create a bfd for each input file. */ |
252b5132 | 7956 | current_target = default_target; |
165f707a | 7957 | lang_statement_iteration++; |
486329aa | 7958 | open_input_bfds (statement_list.head, OPEN_BFD_NORMAL); |
874ef038 AB |
7959 | |
7960 | /* Now that open_input_bfds has processed assignments and provide | |
7961 | statements we can give values to symbolic origin/length now. */ | |
f38a2680 | 7962 | lang_do_memory_regions (true); |
252b5132 | 7963 | |
0381901e | 7964 | #if BFD_SUPPORTS_PLUGINS |
716db898 | 7965 | if (link_info.lto_plugin_active) |
f84854b6 | 7966 | { |
8543fde5 DK |
7967 | lang_statement_list_type added; |
7968 | lang_statement_list_type files, inputfiles; | |
9e2278f5 | 7969 | |
f84854b6 L |
7970 | /* Now all files are read, let the plugin(s) decide if there |
7971 | are any more to be added to the link before we call the | |
8543fde5 DK |
7972 | emulation's after_open hook. We create a private list of |
7973 | input statements for this purpose, which we will eventually | |
370dfff4 | 7974 | insert into the global statement list after the first claimed |
8543fde5 DK |
7975 | file. */ |
7976 | added = *stat_ptr; | |
7977 | /* We need to manipulate all three chains in synchrony. */ | |
7978 | files = file_chain; | |
7979 | inputfiles = input_file_chain; | |
f84854b6 | 7980 | if (plugin_call_all_symbols_read ()) |
df5f2391 | 7981 | einfo (_("%F%P: %s: plugin reported error after all symbols read\n"), |
f84854b6 | 7982 | plugin_error_plugin ()); |
f38a2680 | 7983 | link_info.lto_all_symbols_read = true; |
8543fde5 | 7984 | /* Open any newly added files, updating the file chains. */ |
b02c4f16 | 7985 | plugin_undefs = link_info.hash->undefs_tail; |
cdaa438c | 7986 | open_input_bfds (*added.tail, OPEN_BFD_NORMAL); |
b02c4f16 AM |
7987 | if (plugin_undefs == link_info.hash->undefs_tail) |
7988 | plugin_undefs = NULL; | |
8543fde5 DK |
7989 | /* Restore the global list pointer now they have all been added. */ |
7990 | lang_list_remove_tail (stat_ptr, &added); | |
7991 | /* And detach the fresh ends of the file lists. */ | |
7992 | lang_list_remove_tail (&file_chain, &files); | |
7993 | lang_list_remove_tail (&input_file_chain, &inputfiles); | |
7994 | /* Were any new files added? */ | |
7995 | if (added.head != NULL) | |
7996 | { | |
7997 | /* If so, we will insert them into the statement list immediately | |
128bf1fe AM |
7998 | after the first input file that was claimed by the plugin, |
7999 | unless that file was an archive in which case it is inserted | |
8000 | immediately before. */ | |
f38a2680 | 8001 | bool before; |
128bf1fe AM |
8002 | lang_statement_union_type **prev; |
8003 | plugin_insert = find_replacements_insert_point (&before); | |
8543fde5 DK |
8004 | /* If a plugin adds input files without having claimed any, we |
8005 | don't really have a good idea where to place them. Just putting | |
8006 | them at the start or end of the list is liable to leave them | |
8007 | outside the crtbegin...crtend range. */ | |
9e2278f5 AM |
8008 | ASSERT (plugin_insert != NULL); |
8009 | /* Splice the new statement list into the old one. */ | |
128bf1fe AM |
8010 | prev = &plugin_insert->header.next; |
8011 | if (before) | |
8012 | { | |
8013 | prev = find_next_input_statement (prev); | |
36983a93 | 8014 | if (*prev != (void *) plugin_insert->next_real_file) |
128bf1fe | 8015 | { |
a19826f4 | 8016 | /* We didn't find the expected input statement. |
1f1f5b92 | 8017 | Fall back to adding after plugin_insert. */ |
128bf1fe AM |
8018 | prev = &plugin_insert->header.next; |
8019 | } | |
8020 | } | |
8021 | lang_list_insert_after (stat_ptr, &added, prev); | |
8543fde5 DK |
8022 | /* Likewise for the file chains. */ |
8023 | lang_list_insert_after (&input_file_chain, &inputfiles, | |
36983a93 | 8024 | (void *) &plugin_insert->next_real_file); |
8543fde5 DK |
8025 | /* We must be careful when relinking file_chain; we may need to |
8026 | insert the new files at the head of the list if the insert | |
8027 | point chosen is the dummy first input file. */ | |
9e2278f5 | 8028 | if (plugin_insert->filename) |
36983a93 AM |
8029 | lang_list_insert_after (&file_chain, &files, |
8030 | (void *) &plugin_insert->next); | |
8543fde5 DK |
8031 | else |
8032 | lang_list_insert_after (&file_chain, &files, &file_chain.head); | |
9e2278f5 AM |
8033 | |
8034 | /* Rescan archives in case new undefined symbols have appeared. */ | |
1fa4ec6a | 8035 | files = file_chain; |
165f707a | 8036 | lang_statement_iteration++; |
9e2278f5 | 8037 | open_input_bfds (statement_list.head, OPEN_BFD_RESCAN); |
1fa4ec6a AM |
8038 | lang_list_remove_tail (&file_chain, &files); |
8039 | while (files.head != NULL) | |
8040 | { | |
36983a93 AM |
8041 | lang_input_statement_type **insert; |
8042 | lang_input_statement_type **iter, *temp; | |
1fa4ec6a AM |
8043 | bfd *my_arch; |
8044 | ||
8045 | insert = find_rescan_insertion (&files.head->input_statement); | |
8046 | /* All elements from an archive can be added at once. */ | |
8047 | iter = &files.head->input_statement.next; | |
8048 | my_arch = files.head->input_statement.the_bfd->my_archive; | |
8049 | if (my_arch != NULL) | |
36983a93 AM |
8050 | for (; *iter != NULL; iter = &(*iter)->next) |
8051 | if ((*iter)->the_bfd->my_archive != my_arch) | |
1fa4ec6a AM |
8052 | break; |
8053 | temp = *insert; | |
36983a93 AM |
8054 | *insert = &files.head->input_statement; |
8055 | files.head = (lang_statement_union_type *) *iter; | |
1fa4ec6a AM |
8056 | *iter = temp; |
8057 | if (my_arch != NULL) | |
8058 | { | |
00f93c44 | 8059 | lang_input_statement_type *parent = bfd_usrdata (my_arch); |
1fa4ec6a | 8060 | if (parent != NULL) |
36983a93 | 8061 | parent->next = (lang_input_statement_type *) |
1fa4ec6a AM |
8062 | ((char *) iter |
8063 | - offsetof (lang_input_statement_type, next)); | |
8064 | } | |
8065 | } | |
8543fde5 | 8066 | } |
f84854b6 | 8067 | } |
0381901e | 8068 | #endif /* BFD_SUPPORTS_PLUGINS */ |
5d3236ee | 8069 | |
0aa7f586 AM |
8070 | /* Make sure that nobody has tried to add a symbol to this list |
8071 | before now. */ | |
4153b6db NC |
8072 | ASSERT (link_info.gc_sym_list == NULL); |
8073 | ||
e3e942e9 | 8074 | link_info.gc_sym_list = &entry_symbol; |
41f46ed9 | 8075 | |
e3e942e9 | 8076 | if (entry_symbol.name == NULL) |
41f46ed9 SKS |
8077 | { |
8078 | link_info.gc_sym_list = ldlang_undef_chain_list_head; | |
8079 | ||
8080 | /* entry_symbol is normally initialied by a ENTRY definition in the | |
8081 | linker script or the -e command line option. But if neither of | |
8082 | these have been used, the target specific backend may still have | |
4153b6db | 8083 | provided an entry symbol via a call to lang_default_entry(). |
41f46ed9 SKS |
8084 | Unfortunately this value will not be processed until lang_end() |
8085 | is called, long after this function has finished. So detect this | |
8086 | case here and add the target's entry symbol to the list of starting | |
8087 | points for garbage collection resolution. */ | |
4153b6db | 8088 | lang_add_gc_name (entry_symbol_default); |
41f46ed9 SKS |
8089 | } |
8090 | ||
4153b6db NC |
8091 | lang_add_gc_name (link_info.init_function); |
8092 | lang_add_gc_name (link_info.fini_function); | |
e3e942e9 | 8093 | |
252b5132 | 8094 | ldemul_after_open (); |
16e4ecc0 AM |
8095 | if (config.map_file != NULL) |
8096 | lang_print_asneeded (); | |
252b5132 | 8097 | |
1ff6de03 NA |
8098 | ldlang_open_ctf (); |
8099 | ||
082b7297 | 8100 | bfd_section_already_linked_table_free (); |
9503fd87 | 8101 | |
252b5132 RH |
8102 | /* Make sure that we're not mixing architectures. We call this |
8103 | after all the input files have been opened, but before we do any | |
8104 | other processing, so that any operations merge_private_bfd_data | |
8105 | does on the output file will be known during the rest of the | |
8106 | link. */ | |
8107 | lang_check (); | |
8108 | ||
8109 | /* Handle .exports instead of a version script if we're told to do so. */ | |
8110 | if (command_line.version_exports_section) | |
8111 | lang_do_version_exports_section (); | |
8112 | ||
8113 | /* Build all sets based on the information gathered from the input | |
8114 | files. */ | |
8115 | ldctor_build_sets (); | |
8116 | ||
7dba9362 AM |
8117 | /* Give initial values for __start and __stop symbols, so that ELF |
8118 | gc_sections will keep sections referenced by these symbols. Must | |
8119 | be done before lang_do_assignments below. */ | |
8120 | if (config.build_constructors) | |
8121 | lang_init_start_stop (); | |
8122 | ||
2aa9aad9 NC |
8123 | /* PR 13683: We must rerun the assignments prior to running garbage |
8124 | collection in order to make sure that all symbol aliases are resolved. */ | |
8125 | lang_do_assignments (lang_mark_phase_enum); | |
8126 | expld.phase = lang_first_phase_enum; | |
8127 | ||
08da4cac | 8128 | /* Size up the common data. */ |
252b5132 RH |
8129 | lang_common (); |
8130 | ||
c4621b33 AM |
8131 | /* Remove unreferenced sections if asked to. */ |
8132 | lang_gc_sections (); | |
8133 | ||
5789f845 AM |
8134 | lang_mark_undefineds (); |
8135 | ||
fbf05aa7 L |
8136 | /* Check relocations. */ |
8137 | lang_check_relocs (); | |
8138 | ||
5c3261b0 L |
8139 | ldemul_after_check_relocs (); |
8140 | ||
bcaa7b3e L |
8141 | /* Update wild statements. */ |
8142 | update_wild_statements (statement_list.head); | |
8143 | ||
252b5132 | 8144 | /* Run through the contours of the script and attach input sections |
08da4cac | 8145 | to the correct output sections. */ |
e759c116 | 8146 | lang_statement_iteration++; |
1579bae1 | 8147 | map_input_to_output_sections (statement_list.head, NULL, NULL); |
252b5132 | 8148 | |
776ab89f AM |
8149 | /* Start at the statement immediately after the special abs_section |
8150 | output statement, so that it isn't reordered. */ | |
8151 | process_insert_statements (&lang_os_list.head->header.next); | |
53d25da6 | 8152 | |
9b538ba7 L |
8153 | ldemul_before_place_orphans (); |
8154 | ||
08da4cac | 8155 | /* Find any sections not attached explicitly and handle them. */ |
252b5132 RH |
8156 | lang_place_orphans (); |
8157 | ||
0e1862bb | 8158 | if (!bfd_link_relocatable (&link_info)) |
862120bd | 8159 | { |
57ceae94 AM |
8160 | asection *found; |
8161 | ||
8162 | /* Merge SEC_MERGE sections. This has to be done after GC of | |
8163 | sections, so that GCed sections are not merged, but before | |
8164 | assigning dynamic symbols, since removing whole input sections | |
8165 | is hard then. */ | |
f13a99db | 8166 | bfd_merge_sections (link_info.output_bfd, &link_info); |
57ceae94 | 8167 | |
862120bd | 8168 | /* Look for a text section and set the readonly attribute in it. */ |
f13a99db | 8169 | found = bfd_get_section_by_name (link_info.output_bfd, ".text"); |
862120bd | 8170 | |
1579bae1 | 8171 | if (found != NULL) |
862120bd AM |
8172 | { |
8173 | if (config.text_read_only) | |
8174 | found->flags |= SEC_READONLY; | |
8175 | else | |
8176 | found->flags &= ~SEC_READONLY; | |
8177 | } | |
8178 | } | |
8179 | ||
1ff6de03 NA |
8180 | /* Merge together CTF sections. After this, only the symtab-dependent |
8181 | function and data object sections need adjustment. */ | |
8182 | lang_merge_ctf (); | |
8183 | ||
8184 | /* Emit the CTF, iff the emulation doesn't need to do late emission after | |
8185 | examining things laid out late, like the strtab. */ | |
8186 | lang_write_ctf (0); | |
8187 | ||
77f5e65e AB |
8188 | /* Copy forward lma regions for output sections in same lma region. */ |
8189 | lang_propagate_lma_regions (); | |
8190 | ||
7dba9362 AM |
8191 | /* Defining __start/__stop symbols early for --gc-sections to work |
8192 | around a glibc build problem can result in these symbols being | |
8193 | defined when they should not be. Fix them now. */ | |
8194 | if (config.build_constructors) | |
8195 | lang_undef_start_stop (); | |
8196 | ||
8197 | /* Define .startof./.sizeof. symbols with preliminary values before | |
8198 | dynamic symbols are created. */ | |
8199 | if (!bfd_link_relocatable (&link_info)) | |
8200 | lang_init_startof_sizeof (); | |
8201 | ||
862120bd AM |
8202 | /* Do anything special before sizing sections. This is where ELF |
8203 | and other back-ends size dynamic sections. */ | |
252b5132 RH |
8204 | ldemul_before_allocation (); |
8205 | ||
8206 | /* We must record the program headers before we try to fix the | |
8207 | section positions, since they will affect SIZEOF_HEADERS. */ | |
8208 | lang_record_phdrs (); | |
8209 | ||
b10a8ae0 | 8210 | /* Check relro sections. */ |
0e1862bb | 8211 | if (link_info.relro && !bfd_link_relocatable (&link_info)) |
b10a8ae0 L |
8212 | lang_find_relro_sections (); |
8213 | ||
b3327aad | 8214 | /* Size up the sections. */ |
0aa7f586 | 8215 | lang_size_sections (NULL, !RELAXATION_ENABLED); |
b3327aad | 8216 | |
252b5132 | 8217 | /* See if anything special should be done now we know how big |
eaeb0a9d | 8218 | everything is. This is where relaxation is done. */ |
252b5132 RH |
8219 | ldemul_after_allocation (); |
8220 | ||
7dba9362 AM |
8221 | /* Fix any __start, __stop, .startof. or .sizeof. symbols. */ |
8222 | lang_finalize_start_stop (); | |
252b5132 | 8223 | |
7f0cfc6e AM |
8224 | /* Do all the assignments again, to report errors. Assignment |
8225 | statements are processed multiple times, updating symbols; In | |
8226 | open_input_bfds, lang_do_assignments, and lang_size_sections. | |
8227 | Since lang_relax_sections calls lang_do_assignments, symbols are | |
8228 | also updated in ldemul_after_allocation. */ | |
2f65ac72 | 8229 | lang_do_assignments (lang_final_phase_enum); |
252b5132 | 8230 | |
8ded5a0f AM |
8231 | ldemul_finish (); |
8232 | ||
975f8a9e AM |
8233 | /* Convert absolute symbols to section relative. */ |
8234 | ldexp_finalize_syms (); | |
8235 | ||
252b5132 | 8236 | /* Make sure that the section addresses make sense. */ |
662ef24b | 8237 | if (command_line.check_section_addresses) |
252b5132 | 8238 | lang_check_section_addresses (); |
5f992e62 | 8239 | |
0a618243 AB |
8240 | /* Check any required symbols are known. */ |
8241 | ldlang_check_require_defined_symbols (); | |
8242 | ||
750877ba | 8243 | lang_end (); |
252b5132 RH |
8244 | } |
8245 | ||
8246 | /* EXPORTED TO YACC */ | |
8247 | ||
8248 | void | |
1579bae1 AM |
8249 | lang_add_wild (struct wildcard_spec *filespec, |
8250 | struct wildcard_list *section_list, | |
f38a2680 | 8251 | bool keep_sections) |
252b5132 | 8252 | { |
b6bf44ba | 8253 | struct wildcard_list *curr, *next; |
d3ce72d0 | 8254 | lang_wild_statement_type *new_stmt; |
b6bf44ba AM |
8255 | |
8256 | /* Reverse the list as the parser puts it back to front. */ | |
8257 | for (curr = section_list, section_list = NULL; | |
8258 | curr != NULL; | |
8259 | section_list = curr, curr = next) | |
8260 | { | |
b6bf44ba AM |
8261 | next = curr->next; |
8262 | curr->next = section_list; | |
8263 | } | |
8264 | ||
8265 | if (filespec != NULL && filespec->name != NULL) | |
252b5132 | 8266 | { |
b6bf44ba AM |
8267 | if (strcmp (filespec->name, "*") == 0) |
8268 | filespec->name = NULL; | |
0aa7f586 | 8269 | else if (!wildcardp (filespec->name)) |
f38a2680 | 8270 | lang_has_input_file = true; |
252b5132 | 8271 | } |
b6bf44ba | 8272 | |
d3ce72d0 NC |
8273 | new_stmt = new_stat (lang_wild_statement, stat_ptr); |
8274 | new_stmt->filename = NULL; | |
f38a2680 | 8275 | new_stmt->filenames_sorted = false; |
ae17ab41 | 8276 | new_stmt->section_flag_list = NULL; |
8f1732fc | 8277 | new_stmt->exclude_name_list = NULL; |
b6bf44ba | 8278 | if (filespec != NULL) |
252b5132 | 8279 | { |
d3ce72d0 NC |
8280 | new_stmt->filename = filespec->name; |
8281 | new_stmt->filenames_sorted = filespec->sorted == by_name; | |
ae17ab41 | 8282 | new_stmt->section_flag_list = filespec->section_flag_list; |
8f1732fc | 8283 | new_stmt->exclude_name_list = filespec->exclude_name_list; |
252b5132 | 8284 | } |
d3ce72d0 NC |
8285 | new_stmt->section_list = section_list; |
8286 | new_stmt->keep_sections = keep_sections; | |
8287 | lang_list_init (&new_stmt->children); | |
8288 | analyze_walk_wild_section_handler (new_stmt); | |
252b5132 RH |
8289 | } |
8290 | ||
8291 | void | |
ba916c8a MM |
8292 | lang_section_start (const char *name, etree_type *address, |
8293 | const segment_type *segment) | |
252b5132 | 8294 | { |
d1778b88 | 8295 | lang_address_statement_type *ad; |
252b5132 | 8296 | |
d1778b88 | 8297 | ad = new_stat (lang_address_statement, stat_ptr); |
252b5132 RH |
8298 | ad->section_name = name; |
8299 | ad->address = address; | |
ba916c8a | 8300 | ad->segment = segment; |
252b5132 RH |
8301 | } |
8302 | ||
8303 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called | |
8304 | because of a -e argument on the command line, or zero if this is | |
8305 | called by ENTRY in a linker script. Command line arguments take | |
8306 | precedence. */ | |
8307 | ||
8308 | void | |
f38a2680 | 8309 | lang_add_entry (const char *name, bool cmdline) |
252b5132 | 8310 | { |
e3e942e9 | 8311 | if (entry_symbol.name == NULL |
252b5132 | 8312 | || cmdline |
0aa7f586 | 8313 | || !entry_from_cmdline) |
252b5132 | 8314 | { |
e3e942e9 | 8315 | entry_symbol.name = name; |
252b5132 RH |
8316 | entry_from_cmdline = cmdline; |
8317 | } | |
8318 | } | |
8319 | ||
a359509e ZW |
8320 | /* Set the default start symbol to NAME. .em files should use this, |
8321 | not lang_add_entry, to override the use of "start" if neither the | |
8322 | linker script nor the command line specifies an entry point. NAME | |
8323 | must be permanently allocated. */ | |
8324 | void | |
8325 | lang_default_entry (const char *name) | |
8326 | { | |
8327 | entry_symbol_default = name; | |
8328 | } | |
8329 | ||
252b5132 | 8330 | void |
1579bae1 | 8331 | lang_add_target (const char *name) |
252b5132 | 8332 | { |
d3ce72d0 | 8333 | lang_target_statement_type *new_stmt; |
252b5132 | 8334 | |
d3ce72d0 NC |
8335 | new_stmt = new_stat (lang_target_statement, stat_ptr); |
8336 | new_stmt->target = name; | |
252b5132 RH |
8337 | } |
8338 | ||
8339 | void | |
1579bae1 | 8340 | lang_add_map (const char *name) |
252b5132 RH |
8341 | { |
8342 | while (*name) | |
8343 | { | |
8344 | switch (*name) | |
8345 | { | |
08da4cac | 8346 | case 'F': |
f38a2680 | 8347 | map_option_f = true; |
252b5132 RH |
8348 | break; |
8349 | } | |
8350 | name++; | |
8351 | } | |
8352 | } | |
8353 | ||
8354 | void | |
1579bae1 | 8355 | lang_add_fill (fill_type *fill) |
252b5132 | 8356 | { |
d3ce72d0 | 8357 | lang_fill_statement_type *new_stmt; |
252b5132 | 8358 | |
d3ce72d0 NC |
8359 | new_stmt = new_stat (lang_fill_statement, stat_ptr); |
8360 | new_stmt->fill = fill; | |
252b5132 RH |
8361 | } |
8362 | ||
8363 | void | |
1579bae1 | 8364 | lang_add_data (int type, union etree_union *exp) |
252b5132 | 8365 | { |
d3ce72d0 | 8366 | lang_data_statement_type *new_stmt; |
252b5132 | 8367 | |
d3ce72d0 NC |
8368 | new_stmt = new_stat (lang_data_statement, stat_ptr); |
8369 | new_stmt->exp = exp; | |
8370 | new_stmt->type = type; | |
252b5132 RH |
8371 | } |
8372 | ||
8373 | /* Create a new reloc statement. RELOC is the BFD relocation type to | |
8374 | generate. HOWTO is the corresponding howto structure (we could | |
8375 | look this up, but the caller has already done so). SECTION is the | |
8376 | section to generate a reloc against, or NAME is the name of the | |
8377 | symbol to generate a reloc against. Exactly one of SECTION and | |
8378 | NAME must be NULL. ADDEND is an expression for the addend. */ | |
8379 | ||
8380 | void | |
1579bae1 AM |
8381 | lang_add_reloc (bfd_reloc_code_real_type reloc, |
8382 | reloc_howto_type *howto, | |
8383 | asection *section, | |
8384 | const char *name, | |
8385 | union etree_union *addend) | |
252b5132 RH |
8386 | { |
8387 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); | |
5f992e62 | 8388 | |
252b5132 RH |
8389 | p->reloc = reloc; |
8390 | p->howto = howto; | |
8391 | p->section = section; | |
8392 | p->name = name; | |
8393 | p->addend_exp = addend; | |
8394 | ||
8395 | p->addend_value = 0; | |
8396 | p->output_section = NULL; | |
7fabd029 | 8397 | p->output_offset = 0; |
252b5132 RH |
8398 | } |
8399 | ||
8400 | lang_assignment_statement_type * | |
1579bae1 | 8401 | lang_add_assignment (etree_type *exp) |
252b5132 | 8402 | { |
d3ce72d0 | 8403 | lang_assignment_statement_type *new_stmt; |
252b5132 | 8404 | |
d3ce72d0 NC |
8405 | new_stmt = new_stat (lang_assignment_statement, stat_ptr); |
8406 | new_stmt->exp = exp; | |
8407 | return new_stmt; | |
252b5132 RH |
8408 | } |
8409 | ||
8410 | void | |
1579bae1 | 8411 | lang_add_attribute (enum statement_enum attribute) |
252b5132 | 8412 | { |
bd4d42c1 | 8413 | new_statement (attribute, sizeof (lang_statement_header_type), stat_ptr); |
252b5132 RH |
8414 | } |
8415 | ||
8416 | void | |
1579bae1 | 8417 | lang_startup (const char *name) |
252b5132 | 8418 | { |
1e915804 | 8419 | if (first_file->filename != NULL) |
252b5132 | 8420 | { |
df5f2391 | 8421 | einfo (_("%F%P: multiple STARTUP files\n")); |
252b5132 RH |
8422 | } |
8423 | first_file->filename = name; | |
8424 | first_file->local_sym_name = name; | |
f38a2680 | 8425 | first_file->flags.real = true; |
252b5132 RH |
8426 | } |
8427 | ||
8428 | void | |
f38a2680 | 8429 | lang_float (bool maybe) |
252b5132 RH |
8430 | { |
8431 | lang_float_flag = maybe; | |
8432 | } | |
8433 | ||
ee3cc2e2 RS |
8434 | |
8435 | /* Work out the load- and run-time regions from a script statement, and | |
8436 | store them in *LMA_REGION and *REGION respectively. | |
8437 | ||
a747ee4d NC |
8438 | MEMSPEC is the name of the run-time region, or the value of |
8439 | DEFAULT_MEMORY_REGION if the statement didn't specify one. | |
8440 | LMA_MEMSPEC is the name of the load-time region, or null if the | |
8441 | statement didn't specify one.HAVE_LMA_P is TRUE if the statement | |
8442 | had an explicit load address. | |
ee3cc2e2 RS |
8443 | |
8444 | It is an error to specify both a load region and a load address. */ | |
8445 | ||
8446 | static void | |
6bdafbeb NC |
8447 | lang_get_regions (lang_memory_region_type **region, |
8448 | lang_memory_region_type **lma_region, | |
1579bae1 AM |
8449 | const char *memspec, |
8450 | const char *lma_memspec, | |
f38a2680 AM |
8451 | bool have_lma, |
8452 | bool have_vma) | |
ee3cc2e2 | 8453 | { |
f38a2680 | 8454 | *lma_region = lang_memory_region_lookup (lma_memspec, false); |
ee3cc2e2 | 8455 | |
6feb9908 AM |
8456 | /* If no runtime region or VMA has been specified, but the load region |
8457 | has been specified, then use the load region for the runtime region | |
8458 | as well. */ | |
6bdafbeb | 8459 | if (lma_memspec != NULL |
0aa7f586 | 8460 | && !have_vma |
6bdafbeb | 8461 | && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0) |
ee3cc2e2 RS |
8462 | *region = *lma_region; |
8463 | else | |
f38a2680 | 8464 | *region = lang_memory_region_lookup (memspec, false); |
ee3cc2e2 | 8465 | |
6bdafbeb | 8466 | if (have_lma && lma_memspec != 0) |
c1c8c1ef | 8467 | einfo (_("%X%P:%pS: section has both a load address and a load region\n"), |
dab69f68 | 8468 | NULL); |
ee3cc2e2 RS |
8469 | } |
8470 | ||
252b5132 | 8471 | void |
6bdafbeb NC |
8472 | lang_leave_output_section_statement (fill_type *fill, const char *memspec, |
8473 | lang_output_section_phdr_list *phdrs, | |
8474 | const char *lma_memspec) | |
252b5132 | 8475 | { |
ee3cc2e2 RS |
8476 | lang_get_regions (¤t_section->region, |
8477 | ¤t_section->lma_region, | |
8478 | memspec, lma_memspec, | |
6bdafbeb NC |
8479 | current_section->load_base != NULL, |
8480 | current_section->addr_tree != NULL); | |
113e6845 | 8481 | |
252b5132 | 8482 | current_section->fill = fill; |
252b5132 | 8483 | current_section->phdrs = phdrs; |
bde18da4 | 8484 | pop_stat_ptr (); |
252b5132 RH |
8485 | } |
8486 | ||
252b5132 RH |
8487 | /* Set the output format type. -oformat overrides scripts. */ |
8488 | ||
8489 | void | |
1579bae1 AM |
8490 | lang_add_output_format (const char *format, |
8491 | const char *big, | |
8492 | const char *little, | |
8493 | int from_script) | |
252b5132 RH |
8494 | { |
8495 | if (output_target == NULL || !from_script) | |
8496 | { | |
8497 | if (command_line.endian == ENDIAN_BIG | |
8498 | && big != NULL) | |
8499 | format = big; | |
8500 | else if (command_line.endian == ENDIAN_LITTLE | |
8501 | && little != NULL) | |
8502 | format = little; | |
8503 | ||
8504 | output_target = format; | |
8505 | } | |
8506 | } | |
8507 | ||
53d25da6 AM |
8508 | void |
8509 | lang_add_insert (const char *where, int is_before) | |
8510 | { | |
d3ce72d0 | 8511 | lang_insert_statement_type *new_stmt; |
53d25da6 | 8512 | |
d3ce72d0 NC |
8513 | new_stmt = new_stat (lang_insert_statement, stat_ptr); |
8514 | new_stmt->where = where; | |
8515 | new_stmt->is_before = is_before; | |
53d25da6 AM |
8516 | saved_script_handle = previous_script_handle; |
8517 | } | |
8518 | ||
252b5132 RH |
8519 | /* Enter a group. This creates a new lang_group_statement, and sets |
8520 | stat_ptr to build new statements within the group. */ | |
8521 | ||
8522 | void | |
1579bae1 | 8523 | lang_enter_group (void) |
252b5132 RH |
8524 | { |
8525 | lang_group_statement_type *g; | |
8526 | ||
8527 | g = new_stat (lang_group_statement, stat_ptr); | |
8528 | lang_list_init (&g->children); | |
bde18da4 | 8529 | push_stat_ptr (&g->children); |
252b5132 RH |
8530 | } |
8531 | ||
8532 | /* Leave a group. This just resets stat_ptr to start writing to the | |
8533 | regular list of statements again. Note that this will not work if | |
8534 | groups can occur inside anything else which can adjust stat_ptr, | |
8535 | but currently they can't. */ | |
8536 | ||
8537 | void | |
1579bae1 | 8538 | lang_leave_group (void) |
252b5132 | 8539 | { |
bde18da4 | 8540 | pop_stat_ptr (); |
252b5132 RH |
8541 | } |
8542 | ||
8543 | /* Add a new program header. This is called for each entry in a PHDRS | |
8544 | command in a linker script. */ | |
8545 | ||
8546 | void | |
1579bae1 AM |
8547 | lang_new_phdr (const char *name, |
8548 | etree_type *type, | |
f38a2680 AM |
8549 | bool filehdr, |
8550 | bool phdrs, | |
1579bae1 AM |
8551 | etree_type *at, |
8552 | etree_type *flags) | |
252b5132 RH |
8553 | { |
8554 | struct lang_phdr *n, **pp; | |
f38a2680 | 8555 | bool hdrs; |
252b5132 | 8556 | |
988de25b | 8557 | n = stat_alloc (sizeof (struct lang_phdr)); |
252b5132 RH |
8558 | n->next = NULL; |
8559 | n->name = name; | |
3d9c8f6b | 8560 | n->type = exp_get_vma (type, 0, "program header type"); |
252b5132 RH |
8561 | n->filehdr = filehdr; |
8562 | n->phdrs = phdrs; | |
8563 | n->at = at; | |
8564 | n->flags = flags; | |
1e0061d2 | 8565 | |
5c1a3f0f | 8566 | hdrs = n->type == 1 && (phdrs || filehdr); |
252b5132 RH |
8567 | |
8568 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) | |
4100cea3 AM |
8569 | if (hdrs |
8570 | && (*pp)->type == 1 | |
8571 | && !((*pp)->filehdr || (*pp)->phdrs)) | |
5c1a3f0f | 8572 | { |
c1c8c1ef | 8573 | einfo (_("%X%P:%pS: PHDRS and FILEHDR are not supported" |
dab69f68 | 8574 | " when prior PT_LOAD headers lack them\n"), NULL); |
f38a2680 | 8575 | hdrs = false; |
5c1a3f0f NS |
8576 | } |
8577 | ||
252b5132 RH |
8578 | *pp = n; |
8579 | } | |
8580 | ||
8581 | /* Record the program header information in the output BFD. FIXME: We | |
8582 | should not be calling an ELF specific function here. */ | |
8583 | ||
8584 | static void | |
1579bae1 | 8585 | lang_record_phdrs (void) |
252b5132 RH |
8586 | { |
8587 | unsigned int alc; | |
8588 | asection **secs; | |
6bdafbeb | 8589 | lang_output_section_phdr_list *last; |
252b5132 | 8590 | struct lang_phdr *l; |
afd7a018 | 8591 | lang_output_section_statement_type *os; |
252b5132 RH |
8592 | |
8593 | alc = 10; | |
1e9cc1c2 | 8594 | secs = (asection **) xmalloc (alc * sizeof (asection *)); |
252b5132 | 8595 | last = NULL; |
591a748a | 8596 | |
252b5132 RH |
8597 | for (l = lang_phdr_list; l != NULL; l = l->next) |
8598 | { | |
8599 | unsigned int c; | |
8600 | flagword flags; | |
8601 | bfd_vma at; | |
8602 | ||
8603 | c = 0; | |
8ce18f9c | 8604 | for (os = (void *) lang_os_list.head; |
afd7a018 AM |
8605 | os != NULL; |
8606 | os = os->next) | |
252b5132 | 8607 | { |
6bdafbeb | 8608 | lang_output_section_phdr_list *pl; |
252b5132 | 8609 | |
66c103b7 | 8610 | if (os->constraint < 0) |
0841712e | 8611 | continue; |
252b5132 RH |
8612 | |
8613 | pl = os->phdrs; | |
8614 | if (pl != NULL) | |
8615 | last = pl; | |
8616 | else | |
8617 | { | |
8618 | if (os->sectype == noload_section | |
8619 | || os->bfd_section == NULL | |
8620 | || (os->bfd_section->flags & SEC_ALLOC) == 0) | |
8621 | continue; | |
591a748a | 8622 | |
7512c397 AM |
8623 | /* Don't add orphans to PT_INTERP header. */ |
8624 | if (l->type == 3) | |
8625 | continue; | |
8626 | ||
e9442572 | 8627 | if (last == NULL) |
591a748a | 8628 | { |
0aa7f586 | 8629 | lang_output_section_statement_type *tmp_os; |
591a748a NC |
8630 | |
8631 | /* If we have not run across a section with a program | |
8632 | header assigned to it yet, then scan forwards to find | |
8633 | one. This prevents inconsistencies in the linker's | |
8634 | behaviour when a script has specified just a single | |
8635 | header and there are sections in that script which are | |
8636 | not assigned to it, and which occur before the first | |
8637 | use of that header. See here for more details: | |
8638 | http://sourceware.org/ml/binutils/2007-02/msg00291.html */ | |
8639 | for (tmp_os = os; tmp_os; tmp_os = tmp_os->next) | |
8640 | if (tmp_os->phdrs) | |
e9442572 AM |
8641 | { |
8642 | last = tmp_os->phdrs; | |
8643 | break; | |
8644 | } | |
8645 | if (last == NULL) | |
8646 | einfo (_("%F%P: no sections assigned to phdrs\n")); | |
591a748a | 8647 | } |
e9442572 | 8648 | pl = last; |
252b5132 RH |
8649 | } |
8650 | ||
8651 | if (os->bfd_section == NULL) | |
8652 | continue; | |
8653 | ||
8654 | for (; pl != NULL; pl = pl->next) | |
8655 | { | |
8656 | if (strcmp (pl->name, l->name) == 0) | |
8657 | { | |
8658 | if (c >= alc) | |
8659 | { | |
8660 | alc *= 2; | |
1e9cc1c2 | 8661 | secs = (asection **) xrealloc (secs, |
4724d37e | 8662 | alc * sizeof (asection *)); |
252b5132 RH |
8663 | } |
8664 | secs[c] = os->bfd_section; | |
8665 | ++c; | |
f38a2680 | 8666 | pl->used = true; |
252b5132 RH |
8667 | } |
8668 | } | |
8669 | } | |
8670 | ||
8671 | if (l->flags == NULL) | |
8672 | flags = 0; | |
8673 | else | |
e9ee469a | 8674 | flags = exp_get_vma (l->flags, 0, "phdr flags"); |
252b5132 RH |
8675 | |
8676 | if (l->at == NULL) | |
8677 | at = 0; | |
8678 | else | |
e9ee469a | 8679 | at = exp_get_vma (l->at, 0, "phdr load address"); |
252b5132 | 8680 | |
0aa7f586 AM |
8681 | if (!bfd_record_phdr (link_info.output_bfd, l->type, |
8682 | l->flags != NULL, flags, l->at != NULL, | |
8683 | at, l->filehdr, l->phdrs, c, secs)) | |
252b5132 RH |
8684 | einfo (_("%F%P: bfd_record_phdr failed: %E\n")); |
8685 | } | |
8686 | ||
8687 | free (secs); | |
8688 | ||
8689 | /* Make sure all the phdr assignments succeeded. */ | |
8ce18f9c | 8690 | for (os = (void *) lang_os_list.head; |
afd7a018 AM |
8691 | os != NULL; |
8692 | os = os->next) | |
252b5132 | 8693 | { |
6bdafbeb | 8694 | lang_output_section_phdr_list *pl; |
252b5132 | 8695 | |
66c103b7 | 8696 | if (os->constraint < 0 |
afd7a018 | 8697 | || os->bfd_section == NULL) |
252b5132 RH |
8698 | continue; |
8699 | ||
afd7a018 | 8700 | for (pl = os->phdrs; |
252b5132 RH |
8701 | pl != NULL; |
8702 | pl = pl->next) | |
0aa7f586 | 8703 | if (!pl->used && strcmp (pl->name, "NONE") != 0) |
252b5132 | 8704 | einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), |
afd7a018 | 8705 | os->name, pl->name); |
252b5132 RH |
8706 | } |
8707 | } | |
8708 | ||
8709 | /* Record a list of sections which may not be cross referenced. */ | |
8710 | ||
8711 | void | |
6bdafbeb | 8712 | lang_add_nocrossref (lang_nocrossref_type *l) |
252b5132 RH |
8713 | { |
8714 | struct lang_nocrossrefs *n; | |
8715 | ||
1e9cc1c2 | 8716 | n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); |
252b5132 RH |
8717 | n->next = nocrossref_list; |
8718 | n->list = l; | |
f38a2680 | 8719 | n->onlyfirst = false; |
252b5132 RH |
8720 | nocrossref_list = n; |
8721 | ||
8722 | /* Set notice_all so that we get informed about all symbols. */ | |
f38a2680 | 8723 | link_info.notice_all = true; |
252b5132 | 8724 | } |
cdf96953 MF |
8725 | |
8726 | /* Record a section that cannot be referenced from a list of sections. */ | |
8727 | ||
8728 | void | |
8729 | lang_add_nocrossref_to (lang_nocrossref_type *l) | |
8730 | { | |
8731 | lang_add_nocrossref (l); | |
f38a2680 | 8732 | nocrossref_list->onlyfirst = true; |
cdf96953 | 8733 | } |
252b5132 RH |
8734 | \f |
8735 | /* Overlay handling. We handle overlays with some static variables. */ | |
8736 | ||
8737 | /* The overlay virtual address. */ | |
8738 | static etree_type *overlay_vma; | |
7e7d5768 AM |
8739 | /* And subsection alignment. */ |
8740 | static etree_type *overlay_subalign; | |
252b5132 | 8741 | |
252b5132 RH |
8742 | /* An expression for the maximum section size seen so far. */ |
8743 | static etree_type *overlay_max; | |
8744 | ||
8745 | /* A list of all the sections in this overlay. */ | |
8746 | ||
89cdebba | 8747 | struct overlay_list { |
252b5132 RH |
8748 | struct overlay_list *next; |
8749 | lang_output_section_statement_type *os; | |
8750 | }; | |
8751 | ||
8752 | static struct overlay_list *overlay_list; | |
8753 | ||
8754 | /* Start handling an overlay. */ | |
8755 | ||
8756 | void | |
7e7d5768 | 8757 | lang_enter_overlay (etree_type *vma_expr, etree_type *subalign) |
252b5132 RH |
8758 | { |
8759 | /* The grammar should prevent nested overlays from occurring. */ | |
7e7d5768 AM |
8760 | ASSERT (overlay_vma == NULL |
8761 | && overlay_subalign == NULL | |
8762 | && overlay_max == NULL); | |
252b5132 RH |
8763 | |
8764 | overlay_vma = vma_expr; | |
7e7d5768 | 8765 | overlay_subalign = subalign; |
252b5132 RH |
8766 | } |
8767 | ||
8768 | /* Start a section in an overlay. We handle this by calling | |
9f88b410 RS |
8769 | lang_enter_output_section_statement with the correct VMA. |
8770 | lang_leave_overlay sets up the LMA and memory regions. */ | |
252b5132 RH |
8771 | |
8772 | void | |
1579bae1 | 8773 | lang_enter_overlay_section (const char *name) |
252b5132 RH |
8774 | { |
8775 | struct overlay_list *n; | |
8776 | etree_type *size; | |
8777 | ||
152d792f | 8778 | lang_enter_output_section_statement (name, overlay_vma, overlay_section, |
1eec346e | 8779 | 0, overlay_subalign, 0, 0, 0); |
252b5132 | 8780 | |
9f88b410 | 8781 | /* If this is the first section, then base the VMA of future |
252b5132 RH |
8782 | sections on this one. This will work correctly even if `.' is |
8783 | used in the addresses. */ | |
8784 | if (overlay_list == NULL) | |
9f88b410 | 8785 | overlay_vma = exp_nameop (ADDR, name); |
252b5132 RH |
8786 | |
8787 | /* Remember the section. */ | |
1e9cc1c2 | 8788 | n = (struct overlay_list *) xmalloc (sizeof *n); |
252b5132 RH |
8789 | n->os = current_section; |
8790 | n->next = overlay_list; | |
8791 | overlay_list = n; | |
8792 | ||
8793 | size = exp_nameop (SIZEOF, name); | |
8794 | ||
252b5132 RH |
8795 | /* Arrange to work out the maximum section end address. */ |
8796 | if (overlay_max == NULL) | |
8797 | overlay_max = size; | |
8798 | else | |
8799 | overlay_max = exp_binop (MAX_K, overlay_max, size); | |
8800 | } | |
8801 | ||
8802 | /* Finish a section in an overlay. There isn't any special to do | |
8803 | here. */ | |
8804 | ||
8805 | void | |
1579bae1 | 8806 | lang_leave_overlay_section (fill_type *fill, |
6bdafbeb | 8807 | lang_output_section_phdr_list *phdrs) |
252b5132 RH |
8808 | { |
8809 | const char *name; | |
8810 | char *clean, *s2; | |
8811 | const char *s1; | |
8812 | char *buf; | |
8813 | ||
8814 | name = current_section->name; | |
8815 | ||
a747ee4d NC |
8816 | /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory |
8817 | region and that no load-time region has been specified. It doesn't | |
8818 | really matter what we say here, since lang_leave_overlay will | |
8819 | override it. */ | |
8820 | lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0); | |
252b5132 RH |
8821 | |
8822 | /* Define the magic symbols. */ | |
8823 | ||
1e9cc1c2 | 8824 | clean = (char *) xmalloc (strlen (name) + 1); |
252b5132 RH |
8825 | s2 = clean; |
8826 | for (s1 = name; *s1 != '\0'; s1++) | |
3882b010 | 8827 | if (ISALNUM (*s1) || *s1 == '_') |
252b5132 RH |
8828 | *s2++ = *s1; |
8829 | *s2 = '\0'; | |
8830 | ||
1e9cc1c2 | 8831 | buf = (char *) xmalloc (strlen (clean) + sizeof "__load_start_"); |
252b5132 | 8832 | sprintf (buf, "__load_start_%s", clean); |
34711ca3 AM |
8833 | lang_add_assignment (exp_provide (buf, |
8834 | exp_nameop (LOADADDR, name), | |
f38a2680 | 8835 | false)); |
252b5132 | 8836 | |
1e9cc1c2 | 8837 | buf = (char *) xmalloc (strlen (clean) + sizeof "__load_stop_"); |
252b5132 | 8838 | sprintf (buf, "__load_stop_%s", clean); |
34711ca3 AM |
8839 | lang_add_assignment (exp_provide (buf, |
8840 | exp_binop ('+', | |
8841 | exp_nameop (LOADADDR, name), | |
8842 | exp_nameop (SIZEOF, name)), | |
f38a2680 | 8843 | false)); |
252b5132 RH |
8844 | |
8845 | free (clean); | |
8846 | } | |
8847 | ||
8848 | /* Finish an overlay. If there are any overlay wide settings, this | |
8849 | looks through all the sections in the overlay and sets them. */ | |
8850 | ||
8851 | void | |
1579bae1 AM |
8852 | lang_leave_overlay (etree_type *lma_expr, |
8853 | int nocrossrefs, | |
8854 | fill_type *fill, | |
8855 | const char *memspec, | |
6bdafbeb | 8856 | lang_output_section_phdr_list *phdrs, |
1579bae1 | 8857 | const char *lma_memspec) |
252b5132 RH |
8858 | { |
8859 | lang_memory_region_type *region; | |
562d3460 | 8860 | lang_memory_region_type *lma_region; |
252b5132 | 8861 | struct overlay_list *l; |
6bdafbeb | 8862 | lang_nocrossref_type *nocrossref; |
252b5132 | 8863 | |
ee3cc2e2 RS |
8864 | lang_get_regions (®ion, &lma_region, |
8865 | memspec, lma_memspec, | |
f38a2680 | 8866 | lma_expr != NULL, false); |
562d3460 | 8867 | |
252b5132 RH |
8868 | nocrossref = NULL; |
8869 | ||
9f88b410 RS |
8870 | /* After setting the size of the last section, set '.' to end of the |
8871 | overlay region. */ | |
8872 | if (overlay_list != NULL) | |
6d8bf25d AM |
8873 | { |
8874 | overlay_list->os->update_dot = 1; | |
8875 | overlay_list->os->update_dot_tree | |
f38a2680 | 8876 | = exp_assign (".", exp_binop ('+', overlay_vma, overlay_max), false); |
6d8bf25d | 8877 | } |
9f88b410 | 8878 | |
252b5132 RH |
8879 | l = overlay_list; |
8880 | while (l != NULL) | |
8881 | { | |
8882 | struct overlay_list *next; | |
8883 | ||
1579bae1 | 8884 | if (fill != NULL && l->os->fill == NULL) |
252b5132 | 8885 | l->os->fill = fill; |
1545243b | 8886 | |
9f88b410 RS |
8887 | l->os->region = region; |
8888 | l->os->lma_region = lma_region; | |
8889 | ||
8890 | /* The first section has the load address specified in the | |
8891 | OVERLAY statement. The rest are worked out from that. | |
8892 | The base address is not needed (and should be null) if | |
8893 | an LMA region was specified. */ | |
8894 | if (l->next == 0) | |
152d792f AM |
8895 | { |
8896 | l->os->load_base = lma_expr; | |
7b243801 | 8897 | l->os->sectype = first_overlay_section; |
152d792f | 8898 | } |
252b5132 RH |
8899 | if (phdrs != NULL && l->os->phdrs == NULL) |
8900 | l->os->phdrs = phdrs; | |
8901 | ||
9f88b410 | 8902 | if (nocrossrefs) |
252b5132 | 8903 | { |
6bdafbeb | 8904 | lang_nocrossref_type *nc; |
252b5132 | 8905 | |
1e9cc1c2 | 8906 | nc = (lang_nocrossref_type *) xmalloc (sizeof *nc); |
252b5132 RH |
8907 | nc->name = l->os->name; |
8908 | nc->next = nocrossref; | |
8909 | nocrossref = nc; | |
8910 | } | |
8911 | ||
8912 | next = l->next; | |
8913 | free (l); | |
8914 | l = next; | |
8915 | } | |
8916 | ||
8917 | if (nocrossref != NULL) | |
8918 | lang_add_nocrossref (nocrossref); | |
8919 | ||
252b5132 | 8920 | overlay_vma = NULL; |
252b5132 RH |
8921 | overlay_list = NULL; |
8922 | overlay_max = NULL; | |
8cb1232a | 8923 | overlay_subalign = NULL; |
252b5132 RH |
8924 | } |
8925 | \f | |
8926 | /* Version handling. This is only useful for ELF. */ | |
8927 | ||
108ba305 JJ |
8928 | /* If PREV is NULL, return first version pattern matching particular symbol. |
8929 | If PREV is non-NULL, return first version pattern matching particular | |
8930 | symbol after PREV (previously returned by lang_vers_match). */ | |
252b5132 | 8931 | |
108ba305 JJ |
8932 | static struct bfd_elf_version_expr * |
8933 | lang_vers_match (struct bfd_elf_version_expr_head *head, | |
8934 | struct bfd_elf_version_expr *prev, | |
8935 | const char *sym) | |
252b5132 | 8936 | { |
93252b1c | 8937 | const char *c_sym; |
108ba305 JJ |
8938 | const char *cxx_sym = sym; |
8939 | const char *java_sym = sym; | |
8940 | struct bfd_elf_version_expr *expr = NULL; | |
93252b1c MF |
8941 | enum demangling_styles curr_style; |
8942 | ||
8943 | curr_style = CURRENT_DEMANGLING_STYLE; | |
8944 | cplus_demangle_set_style (no_demangling); | |
8945 | c_sym = bfd_demangle (link_info.output_bfd, sym, DMGL_NO_OPTS); | |
8946 | if (!c_sym) | |
8947 | c_sym = sym; | |
8948 | cplus_demangle_set_style (curr_style); | |
252b5132 | 8949 | |
108ba305 | 8950 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) |
252b5132 | 8951 | { |
93252b1c MF |
8952 | cxx_sym = bfd_demangle (link_info.output_bfd, sym, |
8953 | DMGL_PARAMS | DMGL_ANSI); | |
108ba305 JJ |
8954 | if (!cxx_sym) |
8955 | cxx_sym = sym; | |
252b5132 | 8956 | } |
df816215 | 8957 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) |
252b5132 | 8958 | { |
93252b1c | 8959 | java_sym = bfd_demangle (link_info.output_bfd, sym, DMGL_JAVA); |
108ba305 JJ |
8960 | if (!java_sym) |
8961 | java_sym = sym; | |
252b5132 RH |
8962 | } |
8963 | ||
ae5a3597 | 8964 | if (head->htab && (prev == NULL || prev->literal)) |
252b5132 | 8965 | { |
108ba305 JJ |
8966 | struct bfd_elf_version_expr e; |
8967 | ||
8968 | switch (prev ? prev->mask : 0) | |
8969 | { | |
967928e9 AM |
8970 | case 0: |
8971 | if (head->mask & BFD_ELF_VERSION_C_TYPE) | |
8972 | { | |
93252b1c | 8973 | e.pattern = c_sym; |
1e9cc1c2 | 8974 | expr = (struct bfd_elf_version_expr *) |
4724d37e | 8975 | htab_find ((htab_t) head->htab, &e); |
93252b1c | 8976 | while (expr && strcmp (expr->pattern, c_sym) == 0) |
967928e9 AM |
8977 | if (expr->mask == BFD_ELF_VERSION_C_TYPE) |
8978 | goto out_ret; | |
8979 | else | |
8980 | expr = expr->next; | |
8981 | } | |
8982 | /* Fallthrough */ | |
8983 | case BFD_ELF_VERSION_C_TYPE: | |
8984 | if (head->mask & BFD_ELF_VERSION_CXX_TYPE) | |
8985 | { | |
ae5a3597 | 8986 | e.pattern = cxx_sym; |
1e9cc1c2 | 8987 | expr = (struct bfd_elf_version_expr *) |
4724d37e | 8988 | htab_find ((htab_t) head->htab, &e); |
ae5a3597 | 8989 | while (expr && strcmp (expr->pattern, cxx_sym) == 0) |
967928e9 AM |
8990 | if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) |
8991 | goto out_ret; | |
8992 | else | |
8993 | expr = expr->next; | |
8994 | } | |
8995 | /* Fallthrough */ | |
8996 | case BFD_ELF_VERSION_CXX_TYPE: | |
8997 | if (head->mask & BFD_ELF_VERSION_JAVA_TYPE) | |
8998 | { | |
ae5a3597 | 8999 | e.pattern = java_sym; |
1e9cc1c2 | 9000 | expr = (struct bfd_elf_version_expr *) |
4724d37e | 9001 | htab_find ((htab_t) head->htab, &e); |
ae5a3597 | 9002 | while (expr && strcmp (expr->pattern, java_sym) == 0) |
967928e9 AM |
9003 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) |
9004 | goto out_ret; | |
9005 | else | |
9006 | expr = expr->next; | |
9007 | } | |
9008 | /* Fallthrough */ | |
9009 | default: | |
9010 | break; | |
108ba305 | 9011 | } |
252b5132 | 9012 | } |
108ba305 JJ |
9013 | |
9014 | /* Finally, try the wildcards. */ | |
ae5a3597 | 9015 | if (prev == NULL || prev->literal) |
108ba305 | 9016 | expr = head->remaining; |
252b5132 | 9017 | else |
108ba305 | 9018 | expr = prev->next; |
86043bbb | 9019 | for (; expr; expr = expr->next) |
252b5132 | 9020 | { |
108ba305 JJ |
9021 | const char *s; |
9022 | ||
86043bbb MM |
9023 | if (!expr->pattern) |
9024 | continue; | |
9025 | ||
108ba305 JJ |
9026 | if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') |
9027 | break; | |
9028 | ||
9029 | if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE) | |
9030 | s = java_sym; | |
9031 | else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE) | |
9032 | s = cxx_sym; | |
9033 | else | |
93252b1c | 9034 | s = c_sym; |
5e35cbc2 | 9035 | if (fnmatch (expr->pattern, s, 0) == 0) |
108ba305 | 9036 | break; |
252b5132 RH |
9037 | } |
9038 | ||
967928e9 | 9039 | out_ret: |
93252b1c MF |
9040 | if (c_sym != sym) |
9041 | free ((char *) c_sym); | |
108ba305 JJ |
9042 | if (cxx_sym != sym) |
9043 | free ((char *) cxx_sym); | |
9044 | if (java_sym != sym) | |
9045 | free ((char *) java_sym); | |
9046 | return expr; | |
252b5132 RH |
9047 | } |
9048 | ||
5e35cbc2 | 9049 | /* Return NULL if the PATTERN argument is a glob pattern, otherwise, |
ae5a3597 | 9050 | return a pointer to the symbol name with any backslash quotes removed. */ |
5e35cbc2 L |
9051 | |
9052 | static const char * | |
9053 | realsymbol (const char *pattern) | |
9054 | { | |
9055 | const char *p; | |
f38a2680 | 9056 | bool changed = false, backslash = false; |
1e9cc1c2 | 9057 | char *s, *symbol = (char *) xmalloc (strlen (pattern) + 1); |
5e35cbc2 L |
9058 | |
9059 | for (p = pattern, s = symbol; *p != '\0'; ++p) | |
9060 | { | |
9061 | /* It is a glob pattern only if there is no preceding | |
9062 | backslash. */ | |
5e35cbc2 L |
9063 | if (backslash) |
9064 | { | |
9065 | /* Remove the preceding backslash. */ | |
9066 | *(s - 1) = *p; | |
f38a2680 AM |
9067 | backslash = false; |
9068 | changed = true; | |
5e35cbc2 L |
9069 | } |
9070 | else | |
ae5a3597 AM |
9071 | { |
9072 | if (*p == '?' || *p == '*' || *p == '[') | |
9073 | { | |
9074 | free (symbol); | |
9075 | return NULL; | |
9076 | } | |
5e35cbc2 | 9077 | |
ae5a3597 AM |
9078 | *s++ = *p; |
9079 | backslash = *p == '\\'; | |
9080 | } | |
5e35cbc2 L |
9081 | } |
9082 | ||
9083 | if (changed) | |
9084 | { | |
9085 | *s = '\0'; | |
9086 | return symbol; | |
9087 | } | |
9088 | else | |
9089 | { | |
9090 | free (symbol); | |
9091 | return pattern; | |
9092 | } | |
9093 | } | |
9094 | ||
d3ce72d0 | 9095 | /* This is called for each variable name or match expression. NEW_NAME is |
86043bbb MM |
9096 | the name of the symbol to match, or, if LITERAL_P is FALSE, a glob |
9097 | pattern to be matched against symbol names. */ | |
252b5132 RH |
9098 | |
9099 | struct bfd_elf_version_expr * | |
1579bae1 | 9100 | lang_new_vers_pattern (struct bfd_elf_version_expr *orig, |
d3ce72d0 | 9101 | const char *new_name, |
86043bbb | 9102 | const char *lang, |
f38a2680 | 9103 | bool literal_p) |
252b5132 RH |
9104 | { |
9105 | struct bfd_elf_version_expr *ret; | |
9106 | ||
d3ce72d0 | 9107 | ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); |
252b5132 | 9108 | ret->next = orig; |
31941635 L |
9109 | ret->symver = 0; |
9110 | ret->script = 0; | |
f38a2680 | 9111 | ret->literal = true; |
d3ce72d0 | 9112 | ret->pattern = literal_p ? new_name : realsymbol (new_name); |
ae5a3597 AM |
9113 | if (ret->pattern == NULL) |
9114 | { | |
d3ce72d0 | 9115 | ret->pattern = new_name; |
f38a2680 | 9116 | ret->literal = false; |
ae5a3597 | 9117 | } |
252b5132 RH |
9118 | |
9119 | if (lang == NULL || strcasecmp (lang, "C") == 0) | |
108ba305 | 9120 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 | 9121 | else if (strcasecmp (lang, "C++") == 0) |
108ba305 | 9122 | ret->mask = BFD_ELF_VERSION_CXX_TYPE; |
252b5132 | 9123 | else if (strcasecmp (lang, "Java") == 0) |
108ba305 | 9124 | ret->mask = BFD_ELF_VERSION_JAVA_TYPE; |
252b5132 RH |
9125 | else |
9126 | { | |
9127 | einfo (_("%X%P: unknown language `%s' in version information\n"), | |
9128 | lang); | |
108ba305 | 9129 | ret->mask = BFD_ELF_VERSION_C_TYPE; |
252b5132 RH |
9130 | } |
9131 | ||
fac1652d | 9132 | return ldemul_new_vers_pattern (ret); |
252b5132 RH |
9133 | } |
9134 | ||
9135 | /* This is called for each set of variable names and match | |
9136 | expressions. */ | |
9137 | ||
9138 | struct bfd_elf_version_tree * | |
1579bae1 AM |
9139 | lang_new_vers_node (struct bfd_elf_version_expr *globals, |
9140 | struct bfd_elf_version_expr *locals) | |
252b5132 RH |
9141 | { |
9142 | struct bfd_elf_version_tree *ret; | |
9143 | ||
1e9cc1c2 | 9144 | ret = (struct bfd_elf_version_tree *) xcalloc (1, sizeof *ret); |
108ba305 JJ |
9145 | ret->globals.list = globals; |
9146 | ret->locals.list = locals; | |
9147 | ret->match = lang_vers_match; | |
252b5132 | 9148 | ret->name_indx = (unsigned int) -1; |
252b5132 RH |
9149 | return ret; |
9150 | } | |
9151 | ||
9152 | /* This static variable keeps track of version indices. */ | |
9153 | ||
9154 | static int version_index; | |
9155 | ||
108ba305 JJ |
9156 | static hashval_t |
9157 | version_expr_head_hash (const void *p) | |
9158 | { | |
1e9cc1c2 NC |
9159 | const struct bfd_elf_version_expr *e = |
9160 | (const struct bfd_elf_version_expr *) p; | |
108ba305 | 9161 | |
ae5a3597 | 9162 | return htab_hash_string (e->pattern); |
108ba305 JJ |
9163 | } |
9164 | ||
9165 | static int | |
9166 | version_expr_head_eq (const void *p1, const void *p2) | |
9167 | { | |
1e9cc1c2 NC |
9168 | const struct bfd_elf_version_expr *e1 = |
9169 | (const struct bfd_elf_version_expr *) p1; | |
9170 | const struct bfd_elf_version_expr *e2 = | |
9171 | (const struct bfd_elf_version_expr *) p2; | |
108ba305 | 9172 | |
ae5a3597 | 9173 | return strcmp (e1->pattern, e2->pattern) == 0; |
108ba305 JJ |
9174 | } |
9175 | ||
9176 | static void | |
9177 | lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head) | |
9178 | { | |
9179 | size_t count = 0; | |
9180 | struct bfd_elf_version_expr *e, *next; | |
9181 | struct bfd_elf_version_expr **list_loc, **remaining_loc; | |
9182 | ||
9183 | for (e = head->list; e; e = e->next) | |
9184 | { | |
ae5a3597 | 9185 | if (e->literal) |
108ba305 JJ |
9186 | count++; |
9187 | head->mask |= e->mask; | |
9188 | } | |
9189 | ||
9190 | if (count) | |
9191 | { | |
9192 | head->htab = htab_create (count * 2, version_expr_head_hash, | |
9193 | version_expr_head_eq, NULL); | |
9194 | list_loc = &head->list; | |
9195 | remaining_loc = &head->remaining; | |
9196 | for (e = head->list; e; e = next) | |
9197 | { | |
9198 | next = e->next; | |
ae5a3597 | 9199 | if (!e->literal) |
108ba305 JJ |
9200 | { |
9201 | *remaining_loc = e; | |
9202 | remaining_loc = &e->next; | |
9203 | } | |
9204 | else | |
9205 | { | |
1e9cc1c2 | 9206 | void **loc = htab_find_slot ((htab_t) head->htab, e, INSERT); |
108ba305 JJ |
9207 | |
9208 | if (*loc) | |
9209 | { | |
9210 | struct bfd_elf_version_expr *e1, *last; | |
9211 | ||
1e9cc1c2 | 9212 | e1 = (struct bfd_elf_version_expr *) *loc; |
108ba305 JJ |
9213 | last = NULL; |
9214 | do | |
9215 | { | |
9216 | if (e1->mask == e->mask) | |
9217 | { | |
9218 | last = NULL; | |
9219 | break; | |
9220 | } | |
9221 | last = e1; | |
9222 | e1 = e1->next; | |
9223 | } | |
ae5a3597 | 9224 | while (e1 && strcmp (e1->pattern, e->pattern) == 0); |
108ba305 JJ |
9225 | |
9226 | if (last == NULL) | |
9227 | { | |
9228 | /* This is a duplicate. */ | |
9229 | /* FIXME: Memory leak. Sometimes pattern is not | |
9230 | xmalloced alone, but in larger chunk of memory. */ | |
ae5a3597 | 9231 | /* free (e->pattern); */ |
108ba305 JJ |
9232 | free (e); |
9233 | } | |
9234 | else | |
9235 | { | |
9236 | e->next = last->next; | |
9237 | last->next = e; | |
9238 | } | |
9239 | } | |
9240 | else | |
9241 | { | |
9242 | *loc = e; | |
9243 | *list_loc = e; | |
9244 | list_loc = &e->next; | |
9245 | } | |
9246 | } | |
9247 | } | |
9248 | *remaining_loc = NULL; | |
9249 | *list_loc = head->remaining; | |
9250 | } | |
9251 | else | |
9252 | head->remaining = head->list; | |
9253 | } | |
9254 | ||
252b5132 RH |
9255 | /* This is called when we know the name and dependencies of the |
9256 | version. */ | |
9257 | ||
9258 | void | |
1579bae1 AM |
9259 | lang_register_vers_node (const char *name, |
9260 | struct bfd_elf_version_tree *version, | |
9261 | struct bfd_elf_version_deps *deps) | |
252b5132 RH |
9262 | { |
9263 | struct bfd_elf_version_tree *t, **pp; | |
9264 | struct bfd_elf_version_expr *e1; | |
9265 | ||
6b9b879a JJ |
9266 | if (name == NULL) |
9267 | name = ""; | |
9268 | ||
fd91d419 L |
9269 | if (link_info.version_info != NULL |
9270 | && (name[0] == '\0' || link_info.version_info->name[0] == '\0')) | |
6b9b879a | 9271 | { |
6feb9908 AM |
9272 | einfo (_("%X%P: anonymous version tag cannot be combined" |
9273 | " with other version tags\n")); | |
5ed6aba4 | 9274 | free (version); |
6b9b879a JJ |
9275 | return; |
9276 | } | |
9277 | ||
252b5132 | 9278 | /* Make sure this node has a unique name. */ |
fd91d419 | 9279 | for (t = link_info.version_info; t != NULL; t = t->next) |
252b5132 RH |
9280 | if (strcmp (t->name, name) == 0) |
9281 | einfo (_("%X%P: duplicate version tag `%s'\n"), name); | |
9282 | ||
108ba305 JJ |
9283 | lang_finalize_version_expr_head (&version->globals); |
9284 | lang_finalize_version_expr_head (&version->locals); | |
9285 | ||
252b5132 RH |
9286 | /* Check the global and local match names, and make sure there |
9287 | aren't any duplicates. */ | |
9288 | ||
108ba305 | 9289 | for (e1 = version->globals.list; e1 != NULL; e1 = e1->next) |
252b5132 | 9290 | { |
fd91d419 | 9291 | for (t = link_info.version_info; t != NULL; t = t->next) |
252b5132 RH |
9292 | { |
9293 | struct bfd_elf_version_expr *e2; | |
9294 | ||
ae5a3597 | 9295 | if (t->locals.htab && e1->literal) |
108ba305 | 9296 | { |
1e9cc1c2 | 9297 | e2 = (struct bfd_elf_version_expr *) |
4724d37e | 9298 | htab_find ((htab_t) t->locals.htab, e1); |
ae5a3597 | 9299 | while (e2 && strcmp (e1->pattern, e2->pattern) == 0) |
108ba305 JJ |
9300 | { |
9301 | if (e1->mask == e2->mask) | |
6feb9908 | 9302 | einfo (_("%X%P: duplicate expression `%s'" |
ae5a3597 | 9303 | " in version information\n"), e1->pattern); |
108ba305 JJ |
9304 | e2 = e2->next; |
9305 | } | |
9306 | } | |
ae5a3597 | 9307 | else if (!e1->literal) |
108ba305 | 9308 | for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
9309 | if (strcmp (e1->pattern, e2->pattern) == 0 |
9310 | && e1->mask == e2->mask) | |
9311 | einfo (_("%X%P: duplicate expression `%s'" | |
9312 | " in version information\n"), e1->pattern); | |
252b5132 RH |
9313 | } |
9314 | } | |
9315 | ||
108ba305 | 9316 | for (e1 = version->locals.list; e1 != NULL; e1 = e1->next) |
252b5132 | 9317 | { |
fd91d419 | 9318 | for (t = link_info.version_info; t != NULL; t = t->next) |
252b5132 RH |
9319 | { |
9320 | struct bfd_elf_version_expr *e2; | |
9321 | ||
ae5a3597 | 9322 | if (t->globals.htab && e1->literal) |
108ba305 | 9323 | { |
1e9cc1c2 | 9324 | e2 = (struct bfd_elf_version_expr *) |
4724d37e | 9325 | htab_find ((htab_t) t->globals.htab, e1); |
ae5a3597 | 9326 | while (e2 && strcmp (e1->pattern, e2->pattern) == 0) |
108ba305 JJ |
9327 | { |
9328 | if (e1->mask == e2->mask) | |
6feb9908 AM |
9329 | einfo (_("%X%P: duplicate expression `%s'" |
9330 | " in version information\n"), | |
ae5a3597 | 9331 | e1->pattern); |
108ba305 JJ |
9332 | e2 = e2->next; |
9333 | } | |
9334 | } | |
ae5a3597 | 9335 | else if (!e1->literal) |
108ba305 | 9336 | for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next) |
6feb9908 AM |
9337 | if (strcmp (e1->pattern, e2->pattern) == 0 |
9338 | && e1->mask == e2->mask) | |
9339 | einfo (_("%X%P: duplicate expression `%s'" | |
9340 | " in version information\n"), e1->pattern); | |
252b5132 RH |
9341 | } |
9342 | } | |
9343 | ||
9344 | version->deps = deps; | |
9345 | version->name = name; | |
6b9b879a JJ |
9346 | if (name[0] != '\0') |
9347 | { | |
9348 | ++version_index; | |
9349 | version->vernum = version_index; | |
9350 | } | |
9351 | else | |
9352 | version->vernum = 0; | |
252b5132 | 9353 | |
fd91d419 | 9354 | for (pp = &link_info.version_info; *pp != NULL; pp = &(*pp)->next) |
252b5132 RH |
9355 | ; |
9356 | *pp = version; | |
9357 | } | |
9358 | ||
9359 | /* This is called when we see a version dependency. */ | |
9360 | ||
9361 | struct bfd_elf_version_deps * | |
1579bae1 | 9362 | lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name) |
252b5132 RH |
9363 | { |
9364 | struct bfd_elf_version_deps *ret; | |
9365 | struct bfd_elf_version_tree *t; | |
9366 | ||
1e9cc1c2 | 9367 | ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); |
252b5132 RH |
9368 | ret->next = list; |
9369 | ||
fd91d419 | 9370 | for (t = link_info.version_info; t != NULL; t = t->next) |
252b5132 RH |
9371 | { |
9372 | if (strcmp (t->name, name) == 0) | |
9373 | { | |
9374 | ret->version_needed = t; | |
9375 | return ret; | |
9376 | } | |
9377 | } | |
9378 | ||
9379 | einfo (_("%X%P: unable to find version dependency `%s'\n"), name); | |
9380 | ||
1e0061d2 | 9381 | ret->version_needed = NULL; |
252b5132 RH |
9382 | return ret; |
9383 | } | |
9384 | ||
9385 | static void | |
1579bae1 | 9386 | lang_do_version_exports_section (void) |
252b5132 RH |
9387 | { |
9388 | struct bfd_elf_version_expr *greg = NULL, *lreg; | |
9389 | ||
9390 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
9391 | { | |
9392 | asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); | |
9393 | char *contents, *p; | |
9394 | bfd_size_type len; | |
9395 | ||
9396 | if (sec == NULL) | |
b7a26f91 | 9397 | continue; |
252b5132 | 9398 | |
eea6121a | 9399 | len = sec->size; |
1e9cc1c2 | 9400 | contents = (char *) xmalloc (len); |
252b5132 | 9401 | if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) |
6f9efd97 | 9402 | einfo (_("%X%P: unable to read .exports section contents\n"), sec); |
252b5132 RH |
9403 | |
9404 | p = contents; | |
89cdebba | 9405 | while (p < contents + len) |
252b5132 | 9406 | { |
f38a2680 | 9407 | greg = lang_new_vers_pattern (greg, p, NULL, false); |
252b5132 RH |
9408 | p = strchr (p, '\0') + 1; |
9409 | } | |
9410 | ||
9411 | /* Do not free the contents, as we used them creating the regex. */ | |
9412 | ||
9413 | /* Do not include this section in the link. */ | |
a14a5de3 | 9414 | sec->flags |= SEC_EXCLUDE | SEC_KEEP; |
252b5132 RH |
9415 | } |
9416 | ||
f38a2680 | 9417 | lreg = lang_new_vers_pattern (NULL, "*", NULL, false); |
252b5132 RH |
9418 | lang_register_vers_node (command_line.version_exports_section, |
9419 | lang_new_vers_node (greg, lreg), NULL); | |
9420 | } | |
577a0623 | 9421 | |
874ef038 AB |
9422 | /* Evaluate LENGTH and ORIGIN parts of MEMORY spec. This is initially |
9423 | called with UPDATE_REGIONS_P set to FALSE, in this case no errors are | |
9424 | thrown, however, references to symbols in the origin and length fields | |
9425 | will be pushed into the symbol table, this allows PROVIDE statements to | |
9426 | then provide these symbols. This function is called a second time with | |
9427 | UPDATE_REGIONS_P set to TRUE, this time the we update the actual region | |
9428 | data structures, and throw errors if missing symbols are encountered. */ | |
cc9ad334 SKS |
9429 | |
9430 | static void | |
f38a2680 | 9431 | lang_do_memory_regions (bool update_regions_p) |
cc9ad334 SKS |
9432 | { |
9433 | lang_memory_region_type *r = lang_memory_region_list; | |
9434 | ||
9435 | for (; r != NULL; r = r->next) | |
9436 | { | |
9437 | if (r->origin_exp) | |
0aa7f586 AM |
9438 | { |
9439 | exp_fold_tree_no_dot (r->origin_exp); | |
874ef038 AB |
9440 | if (update_regions_p) |
9441 | { | |
9442 | if (expld.result.valid_p) | |
9443 | { | |
9444 | r->origin = expld.result.value; | |
9445 | r->current = r->origin; | |
9446 | } | |
9447 | else | |
9448 | einfo (_("%P: invalid origin for memory region %s\n"), | |
9449 | r->name_list.name); | |
9450 | } | |
0aa7f586 | 9451 | } |
cc9ad334 | 9452 | if (r->length_exp) |
0aa7f586 AM |
9453 | { |
9454 | exp_fold_tree_no_dot (r->length_exp); | |
874ef038 AB |
9455 | if (update_regions_p) |
9456 | { | |
9457 | if (expld.result.valid_p) | |
9458 | r->length = expld.result.value; | |
9459 | else | |
9460 | einfo (_("%P: invalid length for memory region %s\n"), | |
9461 | r->name_list.name); | |
9462 | } | |
9463 | } | |
cc9ad334 SKS |
9464 | } |
9465 | } | |
9466 | ||
577a0623 | 9467 | void |
1579bae1 | 9468 | lang_add_unique (const char *name) |
577a0623 AM |
9469 | { |
9470 | struct unique_sections *ent; | |
9471 | ||
9472 | for (ent = unique_section_list; ent; ent = ent->next) | |
9473 | if (strcmp (ent->name, name) == 0) | |
9474 | return; | |
9475 | ||
1e9cc1c2 | 9476 | ent = (struct unique_sections *) xmalloc (sizeof *ent); |
577a0623 AM |
9477 | ent->name = xstrdup (name); |
9478 | ent->next = unique_section_list; | |
9479 | unique_section_list = ent; | |
9480 | } | |
55255dae L |
9481 | |
9482 | /* Append the list of dynamic symbols to the existing one. */ | |
9483 | ||
9484 | void | |
37a141bf FS |
9485 | lang_append_dynamic_list (struct bfd_elf_dynamic_list **list_p, |
9486 | struct bfd_elf_version_expr *dynamic) | |
55255dae | 9487 | { |
37a141bf | 9488 | if (*list_p) |
55255dae | 9489 | { |
07806542 JJ |
9490 | struct bfd_elf_version_expr *tail; |
9491 | for (tail = dynamic; tail->next != NULL; tail = tail->next) | |
9492 | ; | |
37a141bf FS |
9493 | tail->next = (*list_p)->head.list; |
9494 | (*list_p)->head.list = dynamic; | |
55255dae L |
9495 | } |
9496 | else | |
9497 | { | |
9498 | struct bfd_elf_dynamic_list *d; | |
9499 | ||
1e9cc1c2 | 9500 | d = (struct bfd_elf_dynamic_list *) xcalloc (1, sizeof *d); |
55255dae L |
9501 | d->head.list = dynamic; |
9502 | d->match = lang_vers_match; | |
37a141bf | 9503 | *list_p = d; |
55255dae L |
9504 | } |
9505 | } | |
9506 | ||
9507 | /* Append the list of C++ typeinfo dynamic symbols to the existing | |
9508 | one. */ | |
9509 | ||
9510 | void | |
9511 | lang_append_dynamic_list_cpp_typeinfo (void) | |
9512 | { | |
0aa7f586 | 9513 | const char *symbols[] = |
55255dae L |
9514 | { |
9515 | "typeinfo name for*", | |
9516 | "typeinfo for*" | |
9517 | }; | |
9518 | struct bfd_elf_version_expr *dynamic = NULL; | |
9519 | unsigned int i; | |
9520 | ||
9521 | for (i = 0; i < ARRAY_SIZE (symbols); i++) | |
9522 | dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++", | |
f38a2680 | 9523 | false); |
55255dae | 9524 | |
37a141bf | 9525 | lang_append_dynamic_list (&link_info.dynamic_list, dynamic); |
55255dae | 9526 | } |
40b36307 L |
9527 | |
9528 | /* Append the list of C++ operator new and delete dynamic symbols to the | |
9529 | existing one. */ | |
9530 | ||
9531 | void | |
9532 | lang_append_dynamic_list_cpp_new (void) | |
9533 | { | |
0aa7f586 | 9534 | const char *symbols[] = |
40b36307 L |
9535 | { |
9536 | "operator new*", | |
9537 | "operator delete*" | |
9538 | }; | |
9539 | struct bfd_elf_version_expr *dynamic = NULL; | |
9540 | unsigned int i; | |
9541 | ||
9542 | for (i = 0; i < ARRAY_SIZE (symbols); i++) | |
9543 | dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++", | |
f38a2680 | 9544 | false); |
40b36307 | 9545 | |
37a141bf | 9546 | lang_append_dynamic_list (&link_info.dynamic_list, dynamic); |
40b36307 | 9547 | } |
01554a74 AM |
9548 | |
9549 | /* Scan a space and/or comma separated string of features. */ | |
9550 | ||
9551 | void | |
9552 | lang_ld_feature (char *str) | |
9553 | { | |
9554 | char *p, *q; | |
9555 | ||
9556 | p = str; | |
9557 | while (*p) | |
9558 | { | |
9559 | char sep; | |
9560 | while (*p == ',' || ISSPACE (*p)) | |
9561 | ++p; | |
9562 | if (!*p) | |
9563 | break; | |
9564 | q = p + 1; | |
9565 | while (*q && *q != ',' && !ISSPACE (*q)) | |
9566 | ++q; | |
9567 | sep = *q; | |
9568 | *q = 0; | |
9569 | if (strcasecmp (p, "SANE_EXPR") == 0) | |
f38a2680 | 9570 | config.sane_expr = true; |
01554a74 AM |
9571 | else |
9572 | einfo (_("%X%P: unknown feature `%s'\n"), p); | |
9573 | *q = sep; | |
9574 | p = q; | |
9575 | } | |
9576 | } | |
3604cb1f TG |
9577 | |
9578 | /* Pretty print memory amount. */ | |
9579 | ||
9580 | static void | |
9581 | lang_print_memory_size (bfd_vma sz) | |
9582 | { | |
9583 | if ((sz & 0x3fffffff) == 0) | |
9584 | printf ("%10" BFD_VMA_FMT "u GB", sz >> 30); | |
9585 | else if ((sz & 0xfffff) == 0) | |
9586 | printf ("%10" BFD_VMA_FMT "u MB", sz >> 20); | |
9587 | else if ((sz & 0x3ff) == 0) | |
9588 | printf ("%10" BFD_VMA_FMT "u KB", sz >> 10); | |
9589 | else | |
9590 | printf (" %10" BFD_VMA_FMT "u B", sz); | |
9591 | } | |
9592 | ||
9593 | /* Implement --print-memory-usage: disply per region memory usage. */ | |
9594 | ||
9595 | void | |
9596 | lang_print_memory_usage (void) | |
9597 | { | |
9598 | lang_memory_region_type *r; | |
9599 | ||
9600 | printf ("Memory region Used Size Region Size %%age Used\n"); | |
9601 | for (r = lang_memory_region_list; r->next != NULL; r = r->next) | |
9602 | { | |
9603 | bfd_vma used_length = r->current - r->origin; | |
3604cb1f TG |
9604 | |
9605 | printf ("%16s: ",r->name_list.name); | |
9606 | lang_print_memory_size (used_length); | |
9607 | lang_print_memory_size ((bfd_vma) r->length); | |
9608 | ||
1769380a AM |
9609 | if (r->length != 0) |
9610 | { | |
9611 | double percent = used_length * 100.0 / r->length; | |
2410edcd | 9612 | printf (" %6.2f%%", percent); |
1769380a | 9613 | } |
2410edcd | 9614 | printf ("\n"); |
3604cb1f TG |
9615 | } |
9616 | } |