Commit | Line | Data |
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ce3c775b | 1 | /* Plugin support for BFD. |
b3adc24a | 2 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
ce3c775b NC |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
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. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
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. */ | |
20 | ||
691bf19c | 21 | #include "sysdep.h" |
98950613 AM |
22 | #include "bfd.h" |
23 | ||
24 | #if BFD_SUPPORTS_PLUGINS | |
25 | ||
ce3c775b | 26 | #include <assert.h> |
17d5dae2 | 27 | #ifdef HAVE_DLFCN_H |
ce3c775b | 28 | #include <dlfcn.h> |
17d5dae2 KT |
29 | #elif defined (HAVE_WINDOWS_H) |
30 | #include <windows.h> | |
31 | #else | |
32 | #error Unknown how to handle dynamic-load-libraries. | |
33 | #endif | |
ce3c775b NC |
34 | #include <stdarg.h> |
35 | #include "plugin-api.h" | |
ce3c775b NC |
36 | #include "plugin.h" |
37 | #include "libbfd.h" | |
38 | #include "libiberty.h" | |
39 | #include <dirent.h> | |
40 | ||
17d5dae2 KT |
41 | #if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) |
42 | ||
43 | #define RTLD_NOW 0 /* Dummy value. */ | |
44 | ||
45 | static void * | |
46 | dlopen (const char *file, int mode ATTRIBUTE_UNUSED) | |
47 | { | |
48 | return LoadLibrary (file); | |
49 | } | |
50 | ||
51 | static void * | |
52 | dlsym (void *handle, const char *name) | |
53 | { | |
54 | return GetProcAddress (handle, name); | |
55 | } | |
56 | ||
57 | static int ATTRIBUTE_UNUSED | |
58 | dlclose (void *handle) | |
59 | { | |
60 | FreeLibrary (handle); | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static const char * | |
65 | dlerror (void) | |
66 | { | |
67 | return "Unable to load DLL."; | |
68 | } | |
69 | ||
70 | #endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */ | |
71 | ||
07d6d2b8 AM |
72 | #define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
73 | #define bfd_plugin_new_section_hook _bfd_generic_new_section_hook | |
74 | #define bfd_plugin_get_section_contents _bfd_generic_get_section_contents | |
ce3c775b | 75 | #define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
07d6d2b8 AM |
76 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
77 | #define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data | |
78 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data | |
79 | #define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags | |
ce3c775b | 80 | #define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p |
07d6d2b8 | 81 | #define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
d00dd7dc | 82 | #define bfd_plugin_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
07d6d2b8 AM |
83 | #define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno |
84 | #define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line | |
85 | #define bfd_plugin_find_line _bfd_nosymbols_find_line | |
86 | #define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info | |
60bb06bc | 87 | #define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
07d6d2b8 AM |
88 | #define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
89 | #define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols | |
90 | #define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
91 | #define bfd_plugin_set_arch_mach bfd_default_set_arch_mach | |
92 | #define bfd_plugin_set_section_contents _bfd_generic_set_section_contents | |
ce3c775b | 93 | #define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
07d6d2b8 AM |
94 | #define bfd_plugin_bfd_relax_section bfd_generic_relax_section |
95 | #define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
96 | #define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
97 | #define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms | |
98 | #define bfd_plugin_bfd_final_link _bfd_generic_final_link | |
99 | #define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section | |
100 | #define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections | |
101 | #define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags | |
102 | #define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections | |
103 | #define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section | |
cb7f4b29 | 104 | #define bfd_plugin_bfd_group_name bfd_generic_group_name |
07d6d2b8 AM |
105 | #define bfd_plugin_bfd_discard_group bfd_generic_discard_group |
106 | #define bfd_plugin_section_already_linked _bfd_generic_section_already_linked | |
107 | #define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol | |
34a87bb0 | 108 | #define bfd_plugin_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
07d6d2b8 | 109 | #define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop |
69a630b5 | 110 | #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
07d6d2b8 | 111 | #define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs |
ce3c775b NC |
112 | |
113 | static enum ld_plugin_status | |
114 | message (int level ATTRIBUTE_UNUSED, | |
115 | const char * format, ...) | |
116 | { | |
117 | va_list args; | |
118 | va_start (args, format); | |
119 | printf ("bfd plugin: "); | |
120 | vprintf (format, args); | |
d9b21463 | 121 | putchar ('\n'); |
ce3c775b NC |
122 | va_end (args); |
123 | return LDPS_OK; | |
124 | } | |
125 | ||
0aa99dcd L |
126 | struct plugin_list_entry |
127 | { | |
128 | /* These must be initialized for each IR object with LTO wrapper. */ | |
0aa99dcd L |
129 | ld_plugin_claim_file_handler claim_file; |
130 | ld_plugin_all_symbols_read_handler all_symbols_read; | |
131 | ld_plugin_all_symbols_read_handler cleanup_handler; | |
132 | char *resolution_file; | |
133 | char *resolution_option; | |
134 | bfd *real_bfd; | |
135 | long real_nsyms; | |
136 | asymbol **real_syms; | |
137 | int lto_nsyms; | |
138 | const struct ld_plugin_symbol *lto_syms; | |
c3a1714c | 139 | bfd_boolean has_symbol_type; |
0aa99dcd L |
140 | |
141 | struct plugin_list_entry *next; | |
142 | ||
143 | /* These can be reused for all IR objects. */ | |
144 | const char *plugin_name; | |
145 | char *gcc; | |
146 | char *lto_wrapper; | |
147 | char *gcc_env; | |
148 | bfd_boolean initialized; | |
149 | }; | |
150 | ||
ecda9016 L |
151 | static const char *plugin_program_name; |
152 | static int need_lto_wrapper_p; | |
153 | ||
154 | void | |
155 | bfd_plugin_set_program_name (const char *program_name, | |
156 | int need_lto_wrapper) | |
157 | { | |
158 | plugin_program_name = program_name; | |
159 | need_lto_wrapper_p = need_lto_wrapper; | |
160 | } | |
161 | ||
0aa99dcd L |
162 | /* Use GCC LTO wrapper to covert LTO IR object to the real object. */ |
163 | ||
164 | static bfd_boolean | |
165 | get_lto_wrapper (struct plugin_list_entry *plugin) | |
166 | { | |
167 | struct stat st; | |
168 | const char *real_name; | |
169 | const char *base_name; | |
170 | size_t length; | |
171 | const char *target_start = NULL; | |
172 | const char *target_end = NULL; | |
173 | size_t target_length = 0; | |
174 | char *gcc_name; | |
175 | char *wrapper_name; | |
176 | char *p; | |
177 | char dir_seperator = '\0'; | |
178 | char *resolution_file; | |
179 | ||
ecda9016 L |
180 | if (!need_lto_wrapper_p) |
181 | return FALSE; | |
182 | ||
0aa99dcd L |
183 | if (plugin->initialized) |
184 | { | |
185 | if (plugin->lto_wrapper) | |
186 | { | |
187 | resolution_file = make_temp_file (".res"); | |
188 | if (resolution_file) | |
189 | { | |
190 | plugin->resolution_file = resolution_file; | |
191 | plugin->resolution_option = concat ("-fresolution=", | |
192 | resolution_file, NULL); | |
193 | return TRUE; | |
194 | } | |
195 | else | |
196 | { | |
197 | /* Something is wrong. Give up. */ | |
198 | free (plugin->gcc); | |
199 | free (plugin->lto_wrapper); | |
200 | free (plugin->gcc_env); | |
201 | plugin->gcc = NULL; | |
202 | plugin->gcc_env = NULL; | |
203 | plugin->lto_wrapper = NULL; | |
204 | } | |
205 | } | |
206 | ||
207 | return FALSE; | |
208 | } | |
209 | ||
210 | plugin->initialized = TRUE; | |
211 | ||
212 | /* Check for PREFIX/libexec/gcc/TARGET/VERSION/liblto_plugin.so. */ | |
213 | real_name = lrealpath (plugin->plugin_name); | |
214 | base_name = lbasename (real_name); | |
215 | ||
216 | /* The directory length in plugin pathname. */ | |
217 | length = base_name - real_name; | |
218 | ||
219 | /* Skip if there is no PREFIX. */ | |
220 | if (!length) | |
221 | return FALSE; | |
222 | ||
223 | p = (char *) real_name + length - 1; | |
224 | if (IS_DIR_SEPARATOR (*p)) | |
225 | { | |
226 | int level = 0; | |
227 | for (; p != real_name; p--) | |
228 | if (IS_DIR_SEPARATOR (*p)) | |
229 | { | |
230 | level++; | |
231 | if (level == 2) | |
232 | target_end = p; | |
233 | else if (level == 3) | |
234 | { | |
235 | target_start = p + 1; | |
236 | target_length = target_end - target_start; | |
237 | } | |
238 | else if (level == 5) | |
239 | { | |
240 | dir_seperator = *p; | |
241 | break; | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | /* Skip if there is no TARGET nor PREFIX. */ | |
247 | if (!target_length || !dir_seperator) | |
248 | return FALSE; | |
249 | ||
250 | #ifdef HAVE_EXECUTABLE_SUFFIX | |
251 | # define GCC_EXECUTABLE "gcc" EXECUTABLE_SUFFIX | |
252 | # define LTO_WRAPPER_EXECUTABLE "lto-wrapper" EXECUTABLE_SUFFIX | |
253 | #else | |
254 | # define GCC_EXECUTABLE "gcc" | |
255 | # define LTO_WRAPPER_EXECUTABLE "lto-wrapper" | |
256 | #endif | |
257 | gcc_name = bfd_malloc (length + target_length | |
258 | + sizeof (GCC_EXECUTABLE)); | |
259 | if (gcc_name == NULL) | |
260 | return FALSE; | |
261 | memcpy (gcc_name, real_name, length); | |
262 | ||
263 | /* Get PREFIX/bin/. */ | |
264 | p += gcc_name - real_name; | |
265 | memcpy (p + 1, "bin", 3); | |
266 | p[4] = dir_seperator; | |
267 | ||
268 | /* Try PREFIX/bin/TARGET-gcc first. */ | |
269 | memcpy (p + 5, target_start, target_length); | |
270 | p[5 + target_length] = '-'; | |
271 | memcpy (p + 5 + target_length + 1, GCC_EXECUTABLE, | |
272 | sizeof (GCC_EXECUTABLE)); | |
273 | if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode)) | |
274 | { | |
275 | /* Then try PREFIX/bin/gcc. */ | |
276 | memcpy (p + 5, GCC_EXECUTABLE, sizeof (GCC_EXECUTABLE)); | |
277 | if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode)) | |
278 | { | |
279 | free (gcc_name); | |
280 | return FALSE; | |
281 | } | |
282 | } | |
283 | ||
284 | /* lto-wrapper should be in the same directory with LTO plugin. */ | |
285 | wrapper_name = bfd_malloc (length + sizeof (LTO_WRAPPER_EXECUTABLE)); | |
286 | if (wrapper_name == NULL) | |
287 | { | |
288 | free (gcc_name); | |
289 | return FALSE; | |
290 | } | |
291 | memcpy (wrapper_name, real_name, length); | |
292 | memcpy (wrapper_name + length, LTO_WRAPPER_EXECUTABLE, | |
293 | sizeof (LTO_WRAPPER_EXECUTABLE)); | |
294 | if (stat (wrapper_name, &st) == 0 && S_ISREG (st.st_mode)) | |
295 | { | |
296 | resolution_file = make_temp_file (".res"); | |
297 | if (resolution_file) | |
298 | { | |
299 | plugin->gcc = gcc_name; | |
300 | plugin->lto_wrapper = wrapper_name; | |
301 | plugin->gcc_env = concat ("COLLECT_GCC=", gcc_name, NULL); | |
302 | plugin->resolution_file = resolution_file; | |
303 | plugin->resolution_option = concat ("-fresolution=", | |
304 | resolution_file, NULL); | |
305 | return TRUE; | |
306 | } | |
307 | } | |
308 | ||
309 | free (gcc_name); | |
310 | free (wrapper_name); | |
311 | return FALSE; | |
312 | } | |
313 | ||
314 | /* Set environment variables for GCC LTO wrapper to covert LTO IR | |
315 | object to the real object. */ | |
316 | ||
317 | static int | |
318 | setup_lto_wrapper_env (struct plugin_list_entry *plugin) | |
319 | { | |
320 | return (putenv (plugin->gcc_env) | |
321 | || putenv ("COLLECT_GCC_OPTIONS=")); | |
322 | } | |
323 | ||
324 | static struct plugin_list_entry *plugin_list = NULL; | |
325 | static struct plugin_list_entry *current_plugin = NULL; | |
326 | ||
ce3c775b | 327 | /* Register a claim-file handler. */ |
ce3c775b NC |
328 | |
329 | static enum ld_plugin_status | |
330 | register_claim_file (ld_plugin_claim_file_handler handler) | |
331 | { | |
0aa99dcd L |
332 | current_plugin->claim_file = handler; |
333 | return LDPS_OK; | |
334 | } | |
335 | ||
336 | /* Register an all-symbols-read handler. */ | |
337 | ||
338 | static enum ld_plugin_status | |
339 | register_all_symbols_read (ld_plugin_all_symbols_read_handler handler) | |
340 | { | |
341 | current_plugin->all_symbols_read = handler; | |
342 | return LDPS_OK; | |
343 | } | |
344 | ||
345 | /* Register a cleanup handler. */ | |
346 | ||
347 | static enum ld_plugin_status | |
348 | register_cleanup (ld_plugin_all_symbols_read_handler handler) | |
349 | { | |
350 | current_plugin->cleanup_handler = handler; | |
351 | return LDPS_OK; | |
352 | } | |
353 | ||
354 | /* Get the symbol resolution info for a plugin-claimed input file. */ | |
355 | ||
356 | static enum ld_plugin_status | |
357 | get_symbols (const void *handle ATTRIBUTE_UNUSED, int nsyms, | |
358 | struct ld_plugin_symbol *syms) | |
359 | { | |
360 | if (syms) | |
361 | { | |
362 | int n; | |
363 | for (n = 0; n < nsyms; n++) | |
364 | { | |
365 | switch (syms[n].def) | |
366 | { | |
367 | default: | |
368 | BFD_ASSERT (0); | |
369 | break; | |
370 | case LDPK_UNDEF: | |
371 | case LDPK_WEAKUNDEF: | |
372 | syms[n].resolution = LDPR_UNDEF; | |
373 | break; | |
374 | case LDPK_DEF: | |
375 | case LDPK_WEAKDEF: | |
376 | case LDPK_COMMON: | |
377 | /* Tell plugin that LTO symbol has references from regular | |
378 | object code. */ | |
379 | syms[n].resolution = LDPR_PREVAILING_DEF; | |
380 | break; | |
381 | } | |
382 | } | |
383 | } | |
384 | ||
385 | return LDPS_OK; | |
386 | } | |
387 | ||
388 | /* Add a new (real) input file generated by a plugin. */ | |
389 | ||
390 | static enum ld_plugin_status | |
391 | add_input_file (const char *pathname) | |
392 | { | |
393 | /* Get symbols from the real LTO object. */ | |
394 | char **matching; | |
395 | long real_symsize; | |
396 | long real_nsyms; | |
397 | asymbol **real_syms; | |
398 | int lto_nsyms; | |
399 | bfd_boolean lto_symbol_found = FALSE; | |
400 | const struct ld_plugin_symbol *lto_syms; | |
401 | bfd *rbfd; | |
402 | int i, j; | |
403 | ||
404 | rbfd = bfd_openr (pathname, NULL); | |
405 | if (!bfd_check_format_matches (rbfd, bfd_object, &matching)) | |
406 | BFD_ASSERT (0); | |
407 | ||
408 | real_symsize = bfd_get_symtab_upper_bound (rbfd); | |
409 | if (real_symsize < 0) | |
410 | BFD_ASSERT (0); | |
411 | ||
412 | real_syms = (asymbol **) bfd_malloc (real_symsize); | |
413 | if (real_syms) | |
414 | { | |
415 | real_nsyms = bfd_canonicalize_symtab (rbfd, real_syms); | |
416 | if (real_nsyms < 0) | |
417 | BFD_ASSERT (0); | |
418 | ||
419 | /* NB: LTO plugin may generate more than one real object from one | |
420 | LTO IR object. We use the one which contains LTO symbols. */ | |
421 | lto_syms = current_plugin->lto_syms; | |
422 | lto_nsyms = current_plugin->lto_nsyms; | |
423 | for (i = 0; i < lto_nsyms; i++) | |
424 | for (j = 0; j < real_nsyms; j++) | |
425 | if (real_syms[j]->name | |
426 | && strcmp (lto_syms[i].name, real_syms[j]->name) == 0) | |
427 | { | |
428 | lto_symbol_found = TRUE; | |
429 | break; | |
430 | } | |
431 | } | |
432 | ||
433 | if (lto_symbol_found) | |
434 | { | |
435 | current_plugin->real_nsyms = real_nsyms; | |
436 | current_plugin->real_syms = real_syms; | |
437 | /* NB: We can't close RBFD which own the real symbol info. */ | |
438 | current_plugin->real_bfd = rbfd; | |
439 | } | |
440 | else | |
441 | { | |
442 | bfd_close (rbfd); | |
443 | free (real_syms); | |
444 | } | |
445 | ||
ce3c775b NC |
446 | return LDPS_OK; |
447 | } | |
448 | ||
449 | static enum ld_plugin_status | |
450 | add_symbols (void * handle, | |
451 | int nsyms, | |
452 | const struct ld_plugin_symbol * syms) | |
453 | { | |
454 | bfd *abfd = handle; | |
455 | struct plugin_data_struct *plugin_data = | |
5bb3703f | 456 | bfd_alloc (abfd, sizeof (plugin_data_struct)); |
ce3c775b | 457 | |
0aa99dcd L |
458 | if (plugin_data) |
459 | { | |
460 | struct ld_plugin_symbol *sym_info; | |
461 | char *strtab; | |
462 | size_t sym_info_size, name_length; | |
463 | int i; | |
464 | ||
1d07a805 L |
465 | memset (plugin_data, 0, sizeof (*plugin_data)); |
466 | ||
0aa99dcd L |
467 | abfd->tdata.plugin_data = plugin_data; |
468 | ||
469 | /* NB: LTO symbols are owned by LTO plugin. Create a copy so | |
470 | that we can use it in bfd_plugin_canonicalize_symtab. */ | |
471 | sym_info_size = nsyms * sizeof (*syms); | |
472 | ||
473 | /* Allocate a string table */ | |
474 | for (i = 0; i < nsyms; i++) | |
475 | sym_info_size += strlen (syms[i].name) + 1; | |
476 | ||
477 | sym_info = bfd_alloc (abfd, sym_info_size); | |
478 | if (sym_info) | |
479 | { | |
480 | /* Copy symbol table. */ | |
481 | memcpy (sym_info, syms, nsyms * sizeof (*syms)); | |
482 | ||
483 | /* Copy symbol names in symbol table. */ | |
484 | strtab = (char *) (sym_info + nsyms); | |
485 | for (i = 0; i < nsyms; i++) | |
486 | { | |
487 | name_length = strlen (syms[i].name); | |
488 | memcpy (strtab, syms[i].name, name_length + 1); | |
489 | sym_info[i].name = strtab; | |
490 | strtab += name_length + 1; | |
491 | } | |
492 | ||
493 | plugin_data->nsyms = nsyms; | |
494 | plugin_data->syms = sym_info; | |
495 | ||
496 | current_plugin->lto_nsyms = nsyms; | |
497 | current_plugin->lto_syms = sym_info; | |
498 | } | |
499 | } | |
ce3c775b NC |
500 | |
501 | if (nsyms != 0) | |
502 | abfd->flags |= HAS_SYMS; | |
503 | ||
ce3c775b NC |
504 | return LDPS_OK; |
505 | } | |
506 | ||
c3a1714c L |
507 | static enum ld_plugin_status |
508 | add_symbols_v2 (void *handle, int nsyms, | |
509 | const struct ld_plugin_symbol *syms) | |
510 | { | |
511 | current_plugin->has_symbol_type = TRUE; | |
512 | return add_symbols (handle, nsyms, syms); | |
513 | } | |
514 | ||
7d0b9ebc AM |
515 | int |
516 | bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file) | |
ce3c775b | 517 | { |
e44f5bef MT |
518 | bfd *iobfd; |
519 | ||
7d0b9ebc | 520 | iobfd = ibfd; |
27b07675 AM |
521 | while (iobfd->my_archive |
522 | && !bfd_is_thin_archive (iobfd->my_archive)) | |
523 | iobfd = iobfd->my_archive; | |
7d0b9ebc | 524 | file->name = iobfd->filename; |
e44f5bef MT |
525 | |
526 | if (!iobfd->iostream && !bfd_open_file (iobfd)) | |
527 | return 0; | |
528 | ||
27b07675 AM |
529 | /* The plugin API expects that the file descriptor won't be closed |
530 | and reused as done by the bfd file cache. So open it again. | |
531 | dup isn't good enough. plugin IO uses lseek/read while BFD uses | |
532 | fseek/fread. It isn't wise to mix the unistd and stdio calls on | |
533 | the same underlying file descriptor. */ | |
534 | file->fd = open (file->name, O_RDONLY | O_BINARY); | |
535 | if (file->fd < 0) | |
536 | return 0; | |
e44f5bef | 537 | |
7d0b9ebc | 538 | if (iobfd == ibfd) |
e44f5bef MT |
539 | { |
540 | struct stat stat_buf; | |
103da91b | 541 | |
7d0b9ebc | 542 | if (fstat (file->fd, &stat_buf)) |
103da91b NC |
543 | { |
544 | close(file->fd); | |
545 | return 0; | |
546 | } | |
547 | ||
7d0b9ebc AM |
548 | file->offset = 0; |
549 | file->filesize = stat_buf.st_size; | |
550 | } | |
551 | else | |
552 | { | |
553 | file->offset = ibfd->origin; | |
554 | file->filesize = arelt_size (ibfd); | |
e44f5bef | 555 | } |
7d0b9ebc AM |
556 | return 1; |
557 | } | |
558 | ||
559 | static int | |
560 | try_claim (bfd *abfd) | |
561 | { | |
562 | int claimed = 0; | |
563 | struct ld_plugin_input_file file; | |
e44f5bef | 564 | |
27b07675 | 565 | file.handle = abfd; |
22fe7df8 L |
566 | if (bfd_plugin_open_input (abfd, &file) |
567 | && current_plugin->claim_file) | |
0aa99dcd L |
568 | { |
569 | current_plugin->claim_file (&file, &claimed); | |
570 | if (claimed) | |
571 | { | |
c3a1714c L |
572 | if (current_plugin->all_symbols_read |
573 | && !current_plugin->has_symbol_type) | |
0aa99dcd L |
574 | { |
575 | struct plugin_data_struct *plugin_data | |
576 | = abfd->tdata.plugin_data; | |
577 | if (plugin_data) | |
578 | { | |
579 | /* Get real symbols from LTO wrapper. */ | |
580 | current_plugin->all_symbols_read (); | |
581 | ||
582 | /* Copy real symbols to plugin_data. */ | |
583 | plugin_data->real_bfd = current_plugin->real_bfd; | |
584 | plugin_data->real_nsyms = current_plugin->real_nsyms; | |
585 | plugin_data->real_syms = current_plugin->real_syms; | |
586 | ||
587 | /* Clean up LTO plugin. */ | |
588 | if (current_plugin->cleanup_handler) | |
589 | current_plugin->cleanup_handler (); | |
590 | } | |
591 | } | |
592 | } | |
593 | ||
22fe7df8 | 594 | close (file.fd); |
0aa99dcd | 595 | } |
22fe7df8 L |
596 | |
597 | if (current_plugin->lto_wrapper) | |
598 | { | |
599 | /* Clean up for LTO wrapper. NB: Resolution file and option | |
600 | have been created regardless if an IR object is claimed or | |
601 | not. */ | |
602 | unlink (current_plugin->resolution_file); | |
603 | free (current_plugin->resolution_option); | |
604 | } | |
605 | ||
7d0b9ebc | 606 | return claimed; |
e44f5bef MT |
607 | } |
608 | ||
609 | static int | |
99845b3b L |
610 | try_load_plugin (const char *pname, |
611 | struct plugin_list_entry *plugin_list_iter, | |
612 | bfd *abfd, bfd_boolean build_list_p) | |
e44f5bef | 613 | { |
dcf06b89 | 614 | void *plugin_handle; |
c3a1714c | 615 | struct ld_plugin_tv tv[13]; |
ce3c775b NC |
616 | int i; |
617 | ld_plugin_onload onload; | |
618 | enum ld_plugin_status status; | |
dcf06b89 | 619 | int result = 0; |
5ae0078c | 620 | |
22fe7df8 L |
621 | /* NB: Each object is independent. Reuse the previous plugin from |
622 | the last run will lead to wrong result. */ | |
623 | if (current_plugin) | |
dcf06b89 L |
624 | memset (current_plugin, 0, |
625 | offsetof (struct plugin_list_entry, next)); | |
0aa99dcd | 626 | |
99845b3b L |
627 | if (plugin_list_iter) |
628 | pname = plugin_list_iter->plugin_name; | |
629 | ||
ce3c775b NC |
630 | plugin_handle = dlopen (pname, RTLD_NOW); |
631 | if (!plugin_handle) | |
632 | { | |
4eca0228 | 633 | _bfd_error_handler ("%s\n", dlerror ()); |
ce3c775b NC |
634 | return 0; |
635 | } | |
636 | ||
22fe7df8 | 637 | if (plugin_list_iter == NULL) |
b0ceb98a | 638 | { |
22fe7df8 L |
639 | size_t length_plugin_name = strlen (pname) + 1; |
640 | char *plugin_name = bfd_malloc (length_plugin_name); | |
641 | if (plugin_name == NULL) | |
dcf06b89 | 642 | goto short_circuit; |
22fe7df8 L |
643 | plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter); |
644 | if (plugin_list_iter == NULL) | |
4b24dd1a | 645 | { |
22fe7df8 | 646 | free (plugin_name); |
dcf06b89 | 647 | goto short_circuit; |
4b24dd1a | 648 | } |
22fe7df8 L |
649 | /* Make a copy of PNAME since PNAME from load_plugin () will be |
650 | freed. */ | |
651 | memcpy (plugin_name, pname, length_plugin_name); | |
652 | memset (plugin_list_iter, 0, sizeof (*plugin_list_iter)); | |
653 | plugin_list_iter->plugin_name = plugin_name; | |
654 | plugin_list_iter->next = plugin_list; | |
655 | plugin_list = plugin_list_iter; | |
b0ceb98a Z |
656 | } |
657 | ||
dcf06b89 | 658 | current_plugin = plugin_list_iter; |
99845b3b | 659 | if (build_list_p) |
dcf06b89 | 660 | goto short_circuit; |
0aa99dcd | 661 | |
ce3c775b NC |
662 | onload = dlsym (plugin_handle, "onload"); |
663 | if (!onload) | |
dcf06b89 | 664 | goto short_circuit; |
ce3c775b NC |
665 | |
666 | i = 0; | |
667 | tv[i].tv_tag = LDPT_MESSAGE; | |
668 | tv[i].tv_u.tv_message = message; | |
669 | ||
670 | ++i; | |
671 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
672 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
673 | ||
674 | ++i; | |
675 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
676 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
677 | ||
c3a1714c L |
678 | ++i; |
679 | tv[i].tv_tag = LDPT_ADD_SYMBOLS_V2; | |
680 | tv[i].tv_u.tv_add_symbols = add_symbols_v2; | |
681 | ||
0aa99dcd L |
682 | if (get_lto_wrapper (plugin_list_iter)) |
683 | { | |
684 | ++i; | |
685 | tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK; | |
686 | tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read; | |
687 | ||
688 | ++i; | |
689 | tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK; | |
690 | tv[i].tv_u.tv_register_cleanup = register_cleanup; | |
691 | ||
692 | ++i; | |
693 | tv[i].tv_tag = LDPT_GET_SYMBOLS; | |
694 | tv[i].tv_u.tv_get_symbols = get_symbols; | |
695 | ||
696 | ++i; | |
697 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V2; | |
698 | tv[i].tv_u.tv_get_symbols = get_symbols; | |
699 | ||
700 | ++i; | |
701 | tv[i].tv_tag = LDPT_OPTION; | |
702 | tv[i].tv_u.tv_string = plugin_list_iter->lto_wrapper; | |
703 | ||
704 | ++i; | |
705 | tv[i].tv_tag = LDPT_OPTION; | |
706 | tv[i].tv_u.tv_string = plugin_list_iter->resolution_option; | |
707 | ||
708 | ++i; | |
709 | tv[i].tv_tag = LDPT_LINKER_OUTPUT; | |
710 | tv[i].tv_u.tv_val = LDPO_EXEC; | |
711 | ||
712 | ++i; | |
713 | tv[i].tv_tag = LDPT_ADD_INPUT_FILE; | |
714 | tv[i].tv_u.tv_add_input_file = add_input_file; | |
715 | } | |
716 | ||
ce3c775b NC |
717 | ++i; |
718 | tv[i].tv_tag = LDPT_NULL; | |
719 | tv[i].tv_u.tv_val = 0; | |
720 | ||
0aa99dcd | 721 | /* LTO plugin will call handler hooks to set up plugin handlers. */ |
ce3c775b NC |
722 | status = (*onload)(tv); |
723 | ||
724 | if (status != LDPS_OK) | |
dcf06b89 | 725 | goto short_circuit; |
b0ceb98a | 726 | |
0aa99dcd L |
727 | if (current_plugin->lto_wrapper |
728 | && setup_lto_wrapper_env (current_plugin)) | |
dcf06b89 | 729 | goto short_circuit; |
ce3c775b | 730 | |
5ae0078c L |
731 | abfd->plugin_format = bfd_plugin_no; |
732 | ||
0aa99dcd | 733 | if (!current_plugin->claim_file) |
dcf06b89 | 734 | goto short_circuit; |
ce3c775b | 735 | |
e44f5bef | 736 | if (!try_claim (abfd)) |
dcf06b89 | 737 | goto short_circuit; |
e44f5bef | 738 | |
5ae0078c | 739 | abfd->plugin_format = bfd_plugin_yes; |
dcf06b89 L |
740 | result = 1; |
741 | ||
dc1e8a47 | 742 | short_circuit: |
dcf06b89 L |
743 | dlclose (plugin_handle); |
744 | return result; | |
ce3c775b NC |
745 | } |
746 | ||
5ae0078c | 747 | /* There may be plugin libraries in lib/bfd-plugins. */ |
99845b3b | 748 | static int has_plugin_list = -1; |
5ae0078c | 749 | |
cb001c0d | 750 | static bfd_cleanup (*ld_plugin_object_p) (bfd *); |
5ae0078c | 751 | |
ce3c775b NC |
752 | static const char *plugin_name; |
753 | ||
754 | void | |
755 | bfd_plugin_set_plugin (const char *p) | |
756 | { | |
757 | plugin_name = p; | |
5ae0078c L |
758 | } |
759 | ||
760 | /* Return TRUE if a plugin library is used. */ | |
761 | ||
762 | bfd_boolean | |
763 | bfd_plugin_specified_p (void) | |
764 | { | |
99845b3b | 765 | return plugin_list != NULL; |
5ae0078c L |
766 | } |
767 | ||
7dc3990e L |
768 | /* Return TRUE if ABFD can be claimed by linker LTO plugin. */ |
769 | ||
770 | bfd_boolean | |
771 | bfd_link_plugin_object_p (bfd *abfd) | |
772 | { | |
773 | if (ld_plugin_object_p) | |
774 | return ld_plugin_object_p (abfd) != NULL; | |
775 | return FALSE; | |
776 | } | |
777 | ||
5ae0078c L |
778 | extern const bfd_target plugin_vec; |
779 | ||
780 | /* Return TRUE if TARGET is a pointer to plugin_vec. */ | |
781 | ||
782 | bfd_boolean | |
783 | bfd_plugin_target_p (const bfd_target *target) | |
784 | { | |
785 | return target == &plugin_vec; | |
786 | } | |
787 | ||
788 | /* Register OBJECT_P to be used by bfd_plugin_object_p. */ | |
789 | ||
790 | void | |
cb001c0d | 791 | register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *)) |
5ae0078c L |
792 | { |
793 | ld_plugin_object_p = object_p; | |
ce3c775b NC |
794 | } |
795 | ||
99845b3b L |
796 | static void |
797 | build_plugin_list (bfd *abfd) | |
ce3c775b | 798 | { |
41f37a6f AM |
799 | /* The intent was to search ${libdir}/bfd-plugins for plugins, but |
800 | unfortunately the original implementation wasn't precisely that | |
801 | when configuring binutils using --libdir. Search in the proper | |
802 | path first, then the old one for backwards compatibility. */ | |
803 | static const char *path[] | |
804 | = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" }; | |
805 | struct stat last_st; | |
41f37a6f | 806 | unsigned int i; |
ce3c775b | 807 | |
99845b3b L |
808 | if (has_plugin_list >= 0) |
809 | return; | |
ce3c775b | 810 | |
41f37a6f AM |
811 | /* Try not to search the same dir twice, by looking at st_dev and |
812 | st_ino for the dir. If we are on a file system that always sets | |
813 | st_ino to zero or the actual st_ino is zero we might waste some | |
814 | time, but that doesn't matter too much. */ | |
815 | last_st.st_dev = 0; | |
816 | last_st.st_ino = 0; | |
817 | for (i = 0; i < sizeof (path) / sizeof (path[0]); i++) | |
ce3c775b | 818 | { |
41f37a6f AM |
819 | char *plugin_dir = make_relative_prefix (plugin_program_name, |
820 | BINDIR, | |
821 | path[i]); | |
822 | if (plugin_dir) | |
823 | { | |
824 | struct stat st; | |
825 | DIR *d; | |
826 | ||
827 | if (stat (plugin_dir, &st) == 0 | |
828 | && S_ISDIR (st.st_mode) | |
829 | && !(last_st.st_dev == st.st_dev | |
830 | && last_st.st_ino == st.st_ino | |
831 | && st.st_ino != 0) | |
832 | && (d = opendir (plugin_dir)) != NULL) | |
833 | { | |
834 | struct dirent *ent; | |
835 | ||
836 | last_st.st_dev = st.st_dev; | |
837 | last_st.st_ino = st.st_ino; | |
838 | while ((ent = readdir (d)) != NULL) | |
839 | { | |
840 | char *full_name; | |
841 | ||
842 | full_name = concat (plugin_dir, "/", ent->d_name, NULL); | |
843 | if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode)) | |
99845b3b | 844 | try_load_plugin (full_name, NULL, abfd, TRUE); |
41f37a6f | 845 | free (full_name); |
41f37a6f AM |
846 | } |
847 | closedir (d); | |
848 | } | |
849 | free (plugin_dir); | |
850 | } | |
ce3c775b NC |
851 | } |
852 | ||
99845b3b L |
853 | has_plugin_list = plugin_list != NULL; |
854 | } | |
855 | ||
856 | static int | |
857 | load_plugin (bfd *abfd) | |
858 | { | |
859 | struct plugin_list_entry *plugin_list_iter; | |
860 | ||
861 | if (plugin_name) | |
862 | return try_load_plugin (plugin_name, plugin_list, abfd, FALSE); | |
863 | ||
864 | if (plugin_program_name == NULL) | |
865 | return 0; | |
866 | ||
867 | build_plugin_list (abfd); | |
868 | ||
869 | for (plugin_list_iter = plugin_list; | |
870 | plugin_list_iter; | |
871 | plugin_list_iter = plugin_list_iter->next) | |
872 | if (try_load_plugin (NULL, plugin_list_iter, abfd, FALSE)) | |
873 | return 1; | |
874 | ||
875 | return 0; | |
ce3c775b NC |
876 | } |
877 | ||
878 | ||
cb001c0d | 879 | static bfd_cleanup |
ce3c775b NC |
880 | bfd_plugin_object_p (bfd *abfd) |
881 | { | |
5ae0078c L |
882 | if (ld_plugin_object_p) |
883 | return ld_plugin_object_p (abfd); | |
884 | ||
49f30d83 | 885 | if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd)) |
ce3c775b NC |
886 | return NULL; |
887 | ||
cb001c0d | 888 | return abfd->plugin_format == bfd_plugin_yes ? _bfd_no_cleanup : NULL; |
ce3c775b NC |
889 | } |
890 | ||
891 | /* Copy any private info we understand from the input bfd | |
892 | to the output bfd. */ | |
893 | ||
894 | static bfd_boolean | |
895 | bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
896 | bfd *obfd ATTRIBUTE_UNUSED) | |
897 | { | |
898 | BFD_ASSERT (0); | |
899 | return TRUE; | |
900 | } | |
901 | ||
902 | /* Copy any private info we understand from the input section | |
903 | to the output section. */ | |
904 | ||
905 | static bfd_boolean | |
906 | bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
907 | asection *isection ATTRIBUTE_UNUSED, | |
908 | bfd *obfd ATTRIBUTE_UNUSED, | |
909 | asection *osection ATTRIBUTE_UNUSED) | |
910 | { | |
911 | BFD_ASSERT (0); | |
912 | return TRUE; | |
913 | } | |
914 | ||
915 | /* Copy any private info we understand from the input symbol | |
916 | to the output symbol. */ | |
917 | ||
918 | static bfd_boolean | |
919 | bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
920 | asymbol *isymbol ATTRIBUTE_UNUSED, | |
921 | bfd *obfd ATTRIBUTE_UNUSED, | |
922 | asymbol *osymbol ATTRIBUTE_UNUSED) | |
923 | { | |
924 | BFD_ASSERT (0); | |
925 | return TRUE; | |
926 | } | |
927 | ||
928 | static bfd_boolean | |
929 | bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) | |
930 | { | |
931 | BFD_ASSERT (0); | |
932 | return TRUE; | |
933 | } | |
934 | ||
935 | static char * | |
936 | bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) | |
937 | { | |
938 | BFD_ASSERT (0); | |
939 | return NULL; | |
940 | } | |
941 | ||
942 | static int | |
943 | bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) | |
261b8d08 PA |
944 | { |
945 | BFD_ASSERT (0); | |
946 | return 0; | |
947 | } | |
948 | ||
949 | static int | |
950 | bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) | |
ce3c775b NC |
951 | { |
952 | BFD_ASSERT (0); | |
953 | return 0; | |
954 | } | |
955 | ||
956 | static long | |
957 | bfd_plugin_get_symtab_upper_bound (bfd *abfd) | |
958 | { | |
959 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
960 | long nsyms = plugin_data->nsyms; | |
961 | ||
962 | BFD_ASSERT (nsyms >= 0); | |
963 | ||
964 | return ((nsyms + 1) * sizeof (asymbol *)); | |
965 | } | |
966 | ||
967 | static flagword | |
968 | convert_flags (const struct ld_plugin_symbol *sym) | |
969 | { | |
970 | switch (sym->def) | |
68ffbac6 | 971 | { |
ce3c775b NC |
972 | case LDPK_DEF: |
973 | case LDPK_COMMON: | |
974 | case LDPK_UNDEF: | |
975 | return BSF_GLOBAL; | |
976 | ||
977 | case LDPK_WEAKUNDEF: | |
978 | case LDPK_WEAKDEF: | |
979 | return BSF_GLOBAL | BSF_WEAK; | |
980 | ||
981 | default: | |
982 | BFD_ASSERT (0); | |
983 | return 0; | |
984 | } | |
985 | } | |
986 | ||
987 | static long | |
988 | bfd_plugin_canonicalize_symtab (bfd *abfd, | |
989 | asymbol **alocation) | |
990 | { | |
991 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
992 | long nsyms = plugin_data->nsyms; | |
993 | const struct ld_plugin_symbol *syms = plugin_data->syms; | |
c3a1714c L |
994 | static asection fake_text_section |
995 | = BFD_FAKE_SECTION (fake_text_section, NULL, "plug", 0, | |
a288c270 | 996 | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS); |
c3a1714c L |
997 | static asection fake_data_section |
998 | = BFD_FAKE_SECTION (fake_data_section, NULL, "plug", 0, | |
999 | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS); | |
1000 | static asection fake_bss_section | |
1001 | = BFD_FAKE_SECTION (fake_bss_section, NULL, "plug", 0, | |
1002 | SEC_ALLOC); | |
a288c270 AM |
1003 | static asection fake_common_section |
1004 | = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON); | |
0aa99dcd L |
1005 | int i, j; |
1006 | long real_nsyms; | |
1007 | asymbol **real_syms; | |
1008 | ||
1009 | real_syms = plugin_data->real_syms; | |
1010 | if (real_syms) | |
1011 | real_nsyms = plugin_data->real_nsyms; | |
1012 | else | |
1013 | real_nsyms = 0; | |
ce3c775b | 1014 | |
ce3c775b NC |
1015 | for (i = 0; i < nsyms; i++) |
1016 | { | |
68ffbac6 | 1017 | asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); |
ce3c775b NC |
1018 | |
1019 | BFD_ASSERT (s); | |
1020 | alocation[i] = s; | |
1021 | ||
1022 | s->the_bfd = abfd; | |
1023 | s->name = syms[i].name; | |
1024 | s->value = 0; | |
1025 | s->flags = convert_flags (&syms[i]); | |
1026 | switch (syms[i].def) | |
1027 | { | |
1028 | case LDPK_COMMON: | |
1029 | s->section = &fake_common_section; | |
1030 | break; | |
1031 | case LDPK_UNDEF: | |
1032 | case LDPK_WEAKUNDEF: | |
1033 | s->section = bfd_und_section_ptr; | |
1034 | break; | |
1035 | case LDPK_DEF: | |
1036 | case LDPK_WEAKDEF: | |
c3a1714c L |
1037 | if (current_plugin->has_symbol_type) |
1038 | switch (syms[i].symbol_type) | |
1039 | { | |
1040 | case LDST_UNKNOWN: | |
1041 | /* What is the best fake section for LDST_UNKNOWN? */ | |
1042 | case LDST_FUNCTION: | |
1043 | s->section = &fake_text_section; | |
1044 | break; | |
1045 | case LDST_VARIABLE: | |
1046 | if (syms[i].section_kind == LDSSK_BSS) | |
1047 | s->section = &fake_bss_section; | |
1048 | else | |
1049 | s->section = &fake_data_section; | |
1050 | break; | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | s->section = &fake_text_section; | |
1055 | if (real_nsyms) | |
1056 | /* Use real LTO symbols if possible. */ | |
1057 | for (j = 0; j < real_nsyms; j++) | |
1058 | if (real_syms[j]->name | |
1059 | && strcmp (syms[i].name, real_syms[j]->name) == 0) | |
1060 | { | |
1061 | s->section = real_syms[j]->section; | |
1062 | break; | |
1063 | } | |
1064 | } | |
ce3c775b NC |
1065 | break; |
1066 | default: | |
1067 | BFD_ASSERT (0); | |
1068 | } | |
1069 | ||
1070 | s->udata.p = (void *) &syms[i]; | |
1071 | } | |
1072 | ||
1073 | return nsyms; | |
1074 | } | |
1075 | ||
1076 | static void | |
1077 | bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, | |
1078 | PTR afile ATTRIBUTE_UNUSED, | |
1079 | asymbol *symbol ATTRIBUTE_UNUSED, | |
1080 | bfd_print_symbol_type how ATTRIBUTE_UNUSED) | |
1081 | { | |
1082 | BFD_ASSERT (0); | |
1083 | } | |
1084 | ||
1085 | static void | |
1086 | bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, | |
1087 | asymbol *symbol, | |
1088 | symbol_info *ret) | |
1089 | { | |
1090 | bfd_symbol_info (symbol, ret); | |
1091 | } | |
1092 | ||
1093 | /* Make an empty symbol. */ | |
1094 | ||
1095 | static asymbol * | |
1096 | bfd_plugin_make_empty_symbol (bfd *abfd) | |
1097 | { | |
d3ce72d0 NC |
1098 | asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); |
1099 | if (new_symbol == NULL) | |
1100 | return new_symbol; | |
1101 | new_symbol->the_bfd = abfd; | |
1102 | return new_symbol; | |
ce3c775b NC |
1103 | } |
1104 | ||
1105 | static int | |
1106 | bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, | |
1107 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1108 | { | |
1109 | BFD_ASSERT (0); | |
1110 | return 0; | |
1111 | } | |
1112 | ||
0aa99dcd L |
1113 | static bfd_boolean |
1114 | bfd_plugin_close_and_cleanup (bfd *abfd) | |
1115 | { | |
1116 | struct plugin_data_struct *plugin_data; | |
1117 | ||
1118 | if (abfd->format != bfd_archive | |
1119 | && (plugin_data = abfd->tdata.plugin_data)) | |
1120 | { | |
1121 | if (plugin_data->real_bfd) | |
1122 | bfd_close (plugin_data->real_bfd); | |
1123 | ||
1124 | if (plugin_data->real_syms) | |
1125 | free (plugin_data->real_syms); | |
1126 | } | |
1127 | ||
1128 | return _bfd_generic_close_and_cleanup (abfd); | |
1129 | } | |
1130 | ||
ce3c775b NC |
1131 | const bfd_target plugin_vec = |
1132 | { | |
1133 | "plugin", /* Name. */ | |
1134 | bfd_target_unknown_flavour, | |
1135 | BFD_ENDIAN_LITTLE, /* Target byte order. */ | |
1136 | BFD_ENDIAN_LITTLE, /* Target headers byte order. */ | |
1137 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
1138 | HAS_LINENO | HAS_DEBUG | | |
1139 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
1140 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | |
1141 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ | |
1142 | 0, /* symbol_leading_char. */ | |
1143 | '/', /* ar_pad_char. */ | |
1144 | 15, /* ar_max_namelen. */ | |
64bfc258 | 1145 | 255, /* match priority. */ |
ce3c775b NC |
1146 | |
1147 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
1148 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
1149 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
1150 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
1151 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
1152 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
1153 | ||
1154 | { /* bfd_check_format. */ | |
1155 | _bfd_dummy_target, | |
1156 | bfd_plugin_object_p, | |
1157 | bfd_generic_archive_p, | |
1158 | _bfd_dummy_target | |
1159 | }, | |
1160 | { /* bfd_set_format. */ | |
d00dd7dc AM |
1161 | _bfd_bool_bfd_false_error, |
1162 | _bfd_bool_bfd_false_error, | |
ce3c775b | 1163 | _bfd_generic_mkarchive, |
d00dd7dc | 1164 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
1165 | }, |
1166 | { /* bfd_write_contents. */ | |
d00dd7dc AM |
1167 | _bfd_bool_bfd_false_error, |
1168 | _bfd_bool_bfd_false_error, | |
ce3c775b | 1169 | _bfd_write_archive_contents, |
d00dd7dc | 1170 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
1171 | }, |
1172 | ||
1173 | BFD_JUMP_TABLE_GENERIC (bfd_plugin), | |
1174 | BFD_JUMP_TABLE_COPY (bfd_plugin), | |
1175 | BFD_JUMP_TABLE_CORE (bfd_plugin), | |
e6cc316a L |
1176 | #ifdef USE_64_BIT_ARCHIVE |
1177 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit), | |
1178 | #else | |
ce3c775b | 1179 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
e6cc316a | 1180 | #endif |
ce3c775b NC |
1181 | BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), |
1182 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
1183 | BFD_JUMP_TABLE_WRITE (bfd_plugin), | |
1184 | BFD_JUMP_TABLE_LINK (bfd_plugin), | |
1185 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
1186 | ||
1187 | NULL, | |
1188 | ||
07d6d2b8 | 1189 | NULL /* backend_data. */ |
ce3c775b | 1190 | }; |
98950613 | 1191 | #endif /* BFD_SUPPORTS_PLUGIN */ |