Commit | Line | Data |
---|---|---|
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 | ||
3d98c460 | 72 | #define bfd_plugin_close_and_cleanup _bfd_generic_close_and_cleanup |
07d6d2b8 AM |
73 | #define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
74 | #define bfd_plugin_new_section_hook _bfd_generic_new_section_hook | |
75 | #define bfd_plugin_get_section_contents _bfd_generic_get_section_contents | |
ce3c775b | 76 | #define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
07d6d2b8 AM |
77 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
78 | #define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data | |
79 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data | |
80 | #define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags | |
ce3c775b | 81 | #define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p |
07d6d2b8 | 82 | #define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
d00dd7dc | 83 | #define bfd_plugin_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
07d6d2b8 AM |
84 | #define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno |
85 | #define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line | |
86 | #define bfd_plugin_find_line _bfd_nosymbols_find_line | |
87 | #define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info | |
60bb06bc | 88 | #define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
07d6d2b8 AM |
89 | #define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
90 | #define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols | |
91 | #define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
92 | #define bfd_plugin_set_arch_mach bfd_default_set_arch_mach | |
93 | #define bfd_plugin_set_section_contents _bfd_generic_set_section_contents | |
ce3c775b | 94 | #define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
07d6d2b8 AM |
95 | #define bfd_plugin_bfd_relax_section bfd_generic_relax_section |
96 | #define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
97 | #define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
98 | #define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms | |
99 | #define bfd_plugin_bfd_final_link _bfd_generic_final_link | |
100 | #define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section | |
101 | #define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections | |
102 | #define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags | |
103 | #define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections | |
104 | #define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section | |
cb7f4b29 | 105 | #define bfd_plugin_bfd_group_name bfd_generic_group_name |
07d6d2b8 AM |
106 | #define bfd_plugin_bfd_discard_group bfd_generic_discard_group |
107 | #define bfd_plugin_section_already_linked _bfd_generic_section_already_linked | |
108 | #define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol | |
34a87bb0 | 109 | #define bfd_plugin_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
07d6d2b8 | 110 | #define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop |
69a630b5 | 111 | #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
07d6d2b8 | 112 | #define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs |
ce3c775b NC |
113 | |
114 | static enum ld_plugin_status | |
115 | message (int level ATTRIBUTE_UNUSED, | |
116 | const char * format, ...) | |
117 | { | |
118 | va_list args; | |
119 | va_start (args, format); | |
120 | printf ("bfd plugin: "); | |
121 | vprintf (format, args); | |
d9b21463 | 122 | putchar ('\n'); |
ce3c775b NC |
123 | va_end (args); |
124 | return LDPS_OK; | |
125 | } | |
126 | ||
0aa99dcd L |
127 | struct plugin_list_entry |
128 | { | |
129 | /* These must be initialized for each IR object with LTO wrapper. */ | |
0aa99dcd L |
130 | ld_plugin_claim_file_handler claim_file; |
131 | ld_plugin_all_symbols_read_handler all_symbols_read; | |
132 | ld_plugin_all_symbols_read_handler cleanup_handler; | |
c3a1714c | 133 | bfd_boolean has_symbol_type; |
0aa99dcd L |
134 | |
135 | struct plugin_list_entry *next; | |
136 | ||
137 | /* These can be reused for all IR objects. */ | |
138 | const char *plugin_name; | |
0aa99dcd L |
139 | }; |
140 | ||
ecda9016 | 141 | static const char *plugin_program_name; |
ecda9016 L |
142 | |
143 | void | |
3d98c460 | 144 | bfd_plugin_set_program_name (const char *program_name) |
ecda9016 L |
145 | { |
146 | plugin_program_name = program_name; | |
0aa99dcd L |
147 | } |
148 | ||
149 | static struct plugin_list_entry *plugin_list = NULL; | |
150 | static struct plugin_list_entry *current_plugin = NULL; | |
151 | ||
ce3c775b | 152 | /* Register a claim-file handler. */ |
ce3c775b NC |
153 | |
154 | static enum ld_plugin_status | |
155 | register_claim_file (ld_plugin_claim_file_handler handler) | |
156 | { | |
0aa99dcd L |
157 | current_plugin->claim_file = handler; |
158 | return LDPS_OK; | |
159 | } | |
160 | ||
ce3c775b NC |
161 | static enum ld_plugin_status |
162 | add_symbols (void * handle, | |
163 | int nsyms, | |
164 | const struct ld_plugin_symbol * syms) | |
165 | { | |
166 | bfd *abfd = handle; | |
167 | struct plugin_data_struct *plugin_data = | |
5bb3703f | 168 | bfd_alloc (abfd, sizeof (plugin_data_struct)); |
ce3c775b | 169 | |
3d98c460 L |
170 | if (!plugin_data) |
171 | return LDPS_ERR; | |
0aa99dcd | 172 | |
3d98c460 L |
173 | plugin_data->nsyms = nsyms; |
174 | plugin_data->syms = syms; | |
ce3c775b NC |
175 | |
176 | if (nsyms != 0) | |
177 | abfd->flags |= HAS_SYMS; | |
178 | ||
3d98c460 | 179 | abfd->tdata.plugin_data = plugin_data; |
ce3c775b NC |
180 | return LDPS_OK; |
181 | } | |
182 | ||
c3a1714c L |
183 | static enum ld_plugin_status |
184 | add_symbols_v2 (void *handle, int nsyms, | |
185 | const struct ld_plugin_symbol *syms) | |
186 | { | |
187 | current_plugin->has_symbol_type = TRUE; | |
188 | return add_symbols (handle, nsyms, syms); | |
189 | } | |
190 | ||
7d0b9ebc AM |
191 | int |
192 | bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file) | |
ce3c775b | 193 | { |
e44f5bef MT |
194 | bfd *iobfd; |
195 | ||
7d0b9ebc | 196 | iobfd = ibfd; |
27b07675 AM |
197 | while (iobfd->my_archive |
198 | && !bfd_is_thin_archive (iobfd->my_archive)) | |
199 | iobfd = iobfd->my_archive; | |
765cf5f6 | 200 | file->name = bfd_get_filename (iobfd); |
e44f5bef MT |
201 | |
202 | if (!iobfd->iostream && !bfd_open_file (iobfd)) | |
203 | return 0; | |
204 | ||
27b07675 AM |
205 | /* The plugin API expects that the file descriptor won't be closed |
206 | and reused as done by the bfd file cache. So open it again. | |
207 | dup isn't good enough. plugin IO uses lseek/read while BFD uses | |
208 | fseek/fread. It isn't wise to mix the unistd and stdio calls on | |
209 | the same underlying file descriptor. */ | |
210 | file->fd = open (file->name, O_RDONLY | O_BINARY); | |
211 | if (file->fd < 0) | |
212 | return 0; | |
e44f5bef | 213 | |
7d0b9ebc | 214 | if (iobfd == ibfd) |
e44f5bef MT |
215 | { |
216 | struct stat stat_buf; | |
103da91b | 217 | |
7d0b9ebc | 218 | if (fstat (file->fd, &stat_buf)) |
103da91b NC |
219 | { |
220 | close(file->fd); | |
221 | return 0; | |
222 | } | |
223 | ||
7d0b9ebc AM |
224 | file->offset = 0; |
225 | file->filesize = stat_buf.st_size; | |
226 | } | |
227 | else | |
228 | { | |
229 | file->offset = ibfd->origin; | |
230 | file->filesize = arelt_size (ibfd); | |
e44f5bef | 231 | } |
7d0b9ebc AM |
232 | return 1; |
233 | } | |
234 | ||
235 | static int | |
236 | try_claim (bfd *abfd) | |
237 | { | |
238 | int claimed = 0; | |
239 | struct ld_plugin_input_file file; | |
e44f5bef | 240 | |
27b07675 | 241 | file.handle = abfd; |
22fe7df8 L |
242 | if (bfd_plugin_open_input (abfd, &file) |
243 | && current_plugin->claim_file) | |
0aa99dcd L |
244 | { |
245 | current_plugin->claim_file (&file, &claimed); | |
22fe7df8 | 246 | close (file.fd); |
0aa99dcd | 247 | } |
22fe7df8 | 248 | |
7d0b9ebc | 249 | return claimed; |
e44f5bef MT |
250 | } |
251 | ||
252 | static int | |
99845b3b L |
253 | try_load_plugin (const char *pname, |
254 | struct plugin_list_entry *plugin_list_iter, | |
255 | bfd *abfd, bfd_boolean build_list_p) | |
e44f5bef | 256 | { |
dcf06b89 | 257 | void *plugin_handle; |
3d98c460 | 258 | struct ld_plugin_tv tv[5]; |
ce3c775b NC |
259 | int i; |
260 | ld_plugin_onload onload; | |
261 | enum ld_plugin_status status; | |
dcf06b89 | 262 | int result = 0; |
5ae0078c | 263 | |
22fe7df8 L |
264 | /* NB: Each object is independent. Reuse the previous plugin from |
265 | the last run will lead to wrong result. */ | |
266 | if (current_plugin) | |
dcf06b89 L |
267 | memset (current_plugin, 0, |
268 | offsetof (struct plugin_list_entry, next)); | |
0aa99dcd | 269 | |
99845b3b L |
270 | if (plugin_list_iter) |
271 | pname = plugin_list_iter->plugin_name; | |
272 | ||
ce3c775b NC |
273 | plugin_handle = dlopen (pname, RTLD_NOW); |
274 | if (!plugin_handle) | |
275 | { | |
9e7cb4c3 NC |
276 | _bfd_error_handler ("Failed to load plugin '%s', reason: %s\n", |
277 | pname, dlerror ()); | |
ce3c775b NC |
278 | return 0; |
279 | } | |
280 | ||
22fe7df8 | 281 | if (plugin_list_iter == NULL) |
b0ceb98a | 282 | { |
22fe7df8 L |
283 | size_t length_plugin_name = strlen (pname) + 1; |
284 | char *plugin_name = bfd_malloc (length_plugin_name); | |
285 | if (plugin_name == NULL) | |
dcf06b89 | 286 | goto short_circuit; |
22fe7df8 L |
287 | plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter); |
288 | if (plugin_list_iter == NULL) | |
4b24dd1a | 289 | { |
22fe7df8 | 290 | free (plugin_name); |
dcf06b89 | 291 | goto short_circuit; |
4b24dd1a | 292 | } |
22fe7df8 L |
293 | /* Make a copy of PNAME since PNAME from load_plugin () will be |
294 | freed. */ | |
295 | memcpy (plugin_name, pname, length_plugin_name); | |
296 | memset (plugin_list_iter, 0, sizeof (*plugin_list_iter)); | |
297 | plugin_list_iter->plugin_name = plugin_name; | |
298 | plugin_list_iter->next = plugin_list; | |
299 | plugin_list = plugin_list_iter; | |
b0ceb98a Z |
300 | } |
301 | ||
dcf06b89 | 302 | current_plugin = plugin_list_iter; |
99845b3b | 303 | if (build_list_p) |
dcf06b89 | 304 | goto short_circuit; |
0aa99dcd | 305 | |
ce3c775b NC |
306 | onload = dlsym (plugin_handle, "onload"); |
307 | if (!onload) | |
dcf06b89 | 308 | goto short_circuit; |
ce3c775b NC |
309 | |
310 | i = 0; | |
311 | tv[i].tv_tag = LDPT_MESSAGE; | |
312 | tv[i].tv_u.tv_message = message; | |
313 | ||
314 | ++i; | |
315 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
316 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
317 | ||
318 | ++i; | |
319 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
320 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
321 | ||
c3a1714c L |
322 | ++i; |
323 | tv[i].tv_tag = LDPT_ADD_SYMBOLS_V2; | |
324 | tv[i].tv_u.tv_add_symbols = add_symbols_v2; | |
325 | ||
ce3c775b NC |
326 | ++i; |
327 | tv[i].tv_tag = LDPT_NULL; | |
328 | tv[i].tv_u.tv_val = 0; | |
329 | ||
0aa99dcd | 330 | /* LTO plugin will call handler hooks to set up plugin handlers. */ |
ce3c775b NC |
331 | status = (*onload)(tv); |
332 | ||
333 | if (status != LDPS_OK) | |
dcf06b89 | 334 | goto short_circuit; |
b0ceb98a | 335 | |
5ae0078c L |
336 | abfd->plugin_format = bfd_plugin_no; |
337 | ||
0aa99dcd | 338 | if (!current_plugin->claim_file) |
dcf06b89 | 339 | goto short_circuit; |
ce3c775b | 340 | |
e44f5bef | 341 | if (!try_claim (abfd)) |
dcf06b89 | 342 | goto short_circuit; |
e44f5bef | 343 | |
5ae0078c | 344 | abfd->plugin_format = bfd_plugin_yes; |
dcf06b89 L |
345 | result = 1; |
346 | ||
dc1e8a47 | 347 | short_circuit: |
dcf06b89 L |
348 | dlclose (plugin_handle); |
349 | return result; | |
ce3c775b NC |
350 | } |
351 | ||
5ae0078c | 352 | /* There may be plugin libraries in lib/bfd-plugins. */ |
99845b3b | 353 | static int has_plugin_list = -1; |
5ae0078c | 354 | |
cb001c0d | 355 | static bfd_cleanup (*ld_plugin_object_p) (bfd *); |
5ae0078c | 356 | |
ce3c775b NC |
357 | static const char *plugin_name; |
358 | ||
359 | void | |
360 | bfd_plugin_set_plugin (const char *p) | |
361 | { | |
362 | plugin_name = p; | |
5ae0078c L |
363 | } |
364 | ||
365 | /* Return TRUE if a plugin library is used. */ | |
366 | ||
367 | bfd_boolean | |
368 | bfd_plugin_specified_p (void) | |
369 | { | |
99845b3b | 370 | return plugin_list != NULL; |
5ae0078c L |
371 | } |
372 | ||
7dc3990e L |
373 | /* Return TRUE if ABFD can be claimed by linker LTO plugin. */ |
374 | ||
375 | bfd_boolean | |
376 | bfd_link_plugin_object_p (bfd *abfd) | |
377 | { | |
378 | if (ld_plugin_object_p) | |
379 | return ld_plugin_object_p (abfd) != NULL; | |
380 | return FALSE; | |
381 | } | |
382 | ||
5ae0078c L |
383 | extern const bfd_target plugin_vec; |
384 | ||
385 | /* Return TRUE if TARGET is a pointer to plugin_vec. */ | |
386 | ||
387 | bfd_boolean | |
388 | bfd_plugin_target_p (const bfd_target *target) | |
389 | { | |
390 | return target == &plugin_vec; | |
391 | } | |
392 | ||
393 | /* Register OBJECT_P to be used by bfd_plugin_object_p. */ | |
394 | ||
395 | void | |
cb001c0d | 396 | register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *)) |
5ae0078c L |
397 | { |
398 | ld_plugin_object_p = object_p; | |
ce3c775b NC |
399 | } |
400 | ||
99845b3b L |
401 | static void |
402 | build_plugin_list (bfd *abfd) | |
ce3c775b | 403 | { |
41f37a6f AM |
404 | /* The intent was to search ${libdir}/bfd-plugins for plugins, but |
405 | unfortunately the original implementation wasn't precisely that | |
406 | when configuring binutils using --libdir. Search in the proper | |
407 | path first, then the old one for backwards compatibility. */ | |
408 | static const char *path[] | |
409 | = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" }; | |
410 | struct stat last_st; | |
41f37a6f | 411 | unsigned int i; |
ce3c775b | 412 | |
99845b3b L |
413 | if (has_plugin_list >= 0) |
414 | return; | |
ce3c775b | 415 | |
41f37a6f AM |
416 | /* Try not to search the same dir twice, by looking at st_dev and |
417 | st_ino for the dir. If we are on a file system that always sets | |
418 | st_ino to zero or the actual st_ino is zero we might waste some | |
419 | time, but that doesn't matter too much. */ | |
420 | last_st.st_dev = 0; | |
421 | last_st.st_ino = 0; | |
422 | for (i = 0; i < sizeof (path) / sizeof (path[0]); i++) | |
ce3c775b | 423 | { |
41f37a6f AM |
424 | char *plugin_dir = make_relative_prefix (plugin_program_name, |
425 | BINDIR, | |
426 | path[i]); | |
427 | if (plugin_dir) | |
428 | { | |
429 | struct stat st; | |
430 | DIR *d; | |
431 | ||
432 | if (stat (plugin_dir, &st) == 0 | |
433 | && S_ISDIR (st.st_mode) | |
434 | && !(last_st.st_dev == st.st_dev | |
435 | && last_st.st_ino == st.st_ino | |
436 | && st.st_ino != 0) | |
437 | && (d = opendir (plugin_dir)) != NULL) | |
438 | { | |
439 | struct dirent *ent; | |
440 | ||
441 | last_st.st_dev = st.st_dev; | |
442 | last_st.st_ino = st.st_ino; | |
443 | while ((ent = readdir (d)) != NULL) | |
444 | { | |
445 | char *full_name; | |
446 | ||
447 | full_name = concat (plugin_dir, "/", ent->d_name, NULL); | |
448 | if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode)) | |
99845b3b | 449 | try_load_plugin (full_name, NULL, abfd, TRUE); |
41f37a6f | 450 | free (full_name); |
41f37a6f AM |
451 | } |
452 | closedir (d); | |
453 | } | |
454 | free (plugin_dir); | |
455 | } | |
ce3c775b NC |
456 | } |
457 | ||
99845b3b L |
458 | has_plugin_list = plugin_list != NULL; |
459 | } | |
460 | ||
461 | static int | |
462 | load_plugin (bfd *abfd) | |
463 | { | |
464 | struct plugin_list_entry *plugin_list_iter; | |
465 | ||
466 | if (plugin_name) | |
467 | return try_load_plugin (plugin_name, plugin_list, abfd, FALSE); | |
468 | ||
469 | if (plugin_program_name == NULL) | |
470 | return 0; | |
471 | ||
472 | build_plugin_list (abfd); | |
473 | ||
474 | for (plugin_list_iter = plugin_list; | |
475 | plugin_list_iter; | |
476 | plugin_list_iter = plugin_list_iter->next) | |
477 | if (try_load_plugin (NULL, plugin_list_iter, abfd, FALSE)) | |
478 | return 1; | |
479 | ||
480 | return 0; | |
ce3c775b NC |
481 | } |
482 | ||
483 | ||
cb001c0d | 484 | static bfd_cleanup |
ce3c775b NC |
485 | bfd_plugin_object_p (bfd *abfd) |
486 | { | |
5ae0078c L |
487 | if (ld_plugin_object_p) |
488 | return ld_plugin_object_p (abfd); | |
489 | ||
49f30d83 | 490 | if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd)) |
ce3c775b NC |
491 | return NULL; |
492 | ||
cb001c0d | 493 | return abfd->plugin_format == bfd_plugin_yes ? _bfd_no_cleanup : NULL; |
ce3c775b NC |
494 | } |
495 | ||
496 | /* Copy any private info we understand from the input bfd | |
497 | to the output bfd. */ | |
498 | ||
499 | static bfd_boolean | |
500 | bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
501 | bfd *obfd ATTRIBUTE_UNUSED) | |
502 | { | |
503 | BFD_ASSERT (0); | |
504 | return TRUE; | |
505 | } | |
506 | ||
507 | /* Copy any private info we understand from the input section | |
508 | to the output section. */ | |
509 | ||
510 | static bfd_boolean | |
511 | bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
512 | asection *isection ATTRIBUTE_UNUSED, | |
513 | bfd *obfd ATTRIBUTE_UNUSED, | |
514 | asection *osection ATTRIBUTE_UNUSED) | |
515 | { | |
516 | BFD_ASSERT (0); | |
517 | return TRUE; | |
518 | } | |
519 | ||
520 | /* Copy any private info we understand from the input symbol | |
521 | to the output symbol. */ | |
522 | ||
523 | static bfd_boolean | |
524 | bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
525 | asymbol *isymbol ATTRIBUTE_UNUSED, | |
526 | bfd *obfd ATTRIBUTE_UNUSED, | |
527 | asymbol *osymbol ATTRIBUTE_UNUSED) | |
528 | { | |
529 | BFD_ASSERT (0); | |
530 | return TRUE; | |
531 | } | |
532 | ||
533 | static bfd_boolean | |
534 | bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) | |
535 | { | |
536 | BFD_ASSERT (0); | |
537 | return TRUE; | |
538 | } | |
539 | ||
540 | static char * | |
541 | bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) | |
542 | { | |
543 | BFD_ASSERT (0); | |
544 | return NULL; | |
545 | } | |
546 | ||
547 | static int | |
548 | bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) | |
261b8d08 PA |
549 | { |
550 | BFD_ASSERT (0); | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static int | |
555 | bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) | |
ce3c775b NC |
556 | { |
557 | BFD_ASSERT (0); | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static long | |
562 | bfd_plugin_get_symtab_upper_bound (bfd *abfd) | |
563 | { | |
564 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
565 | long nsyms = plugin_data->nsyms; | |
566 | ||
567 | BFD_ASSERT (nsyms >= 0); | |
568 | ||
569 | return ((nsyms + 1) * sizeof (asymbol *)); | |
570 | } | |
571 | ||
572 | static flagword | |
573 | convert_flags (const struct ld_plugin_symbol *sym) | |
574 | { | |
575 | switch (sym->def) | |
68ffbac6 | 576 | { |
ce3c775b NC |
577 | case LDPK_DEF: |
578 | case LDPK_COMMON: | |
579 | case LDPK_UNDEF: | |
580 | return BSF_GLOBAL; | |
581 | ||
582 | case LDPK_WEAKUNDEF: | |
583 | case LDPK_WEAKDEF: | |
584 | return BSF_GLOBAL | BSF_WEAK; | |
585 | ||
586 | default: | |
587 | BFD_ASSERT (0); | |
588 | return 0; | |
589 | } | |
590 | } | |
591 | ||
592 | static long | |
593 | bfd_plugin_canonicalize_symtab (bfd *abfd, | |
594 | asymbol **alocation) | |
595 | { | |
596 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
597 | long nsyms = plugin_data->nsyms; | |
598 | const struct ld_plugin_symbol *syms = plugin_data->syms; | |
c3a1714c L |
599 | static asection fake_text_section |
600 | = BFD_FAKE_SECTION (fake_text_section, NULL, "plug", 0, | |
a288c270 | 601 | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS); |
c3a1714c L |
602 | static asection fake_data_section |
603 | = BFD_FAKE_SECTION (fake_data_section, NULL, "plug", 0, | |
604 | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS); | |
605 | static asection fake_bss_section | |
606 | = BFD_FAKE_SECTION (fake_bss_section, NULL, "plug", 0, | |
607 | SEC_ALLOC); | |
a288c270 AM |
608 | static asection fake_common_section |
609 | = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON); | |
3d98c460 | 610 | int i; |
ce3c775b | 611 | |
ce3c775b NC |
612 | for (i = 0; i < nsyms; i++) |
613 | { | |
68ffbac6 | 614 | asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); |
ce3c775b NC |
615 | |
616 | BFD_ASSERT (s); | |
617 | alocation[i] = s; | |
618 | ||
619 | s->the_bfd = abfd; | |
620 | s->name = syms[i].name; | |
621 | s->value = 0; | |
622 | s->flags = convert_flags (&syms[i]); | |
623 | switch (syms[i].def) | |
624 | { | |
625 | case LDPK_COMMON: | |
626 | s->section = &fake_common_section; | |
627 | break; | |
628 | case LDPK_UNDEF: | |
629 | case LDPK_WEAKUNDEF: | |
630 | s->section = bfd_und_section_ptr; | |
631 | break; | |
632 | case LDPK_DEF: | |
633 | case LDPK_WEAKDEF: | |
c3a1714c L |
634 | if (current_plugin->has_symbol_type) |
635 | switch (syms[i].symbol_type) | |
636 | { | |
637 | case LDST_UNKNOWN: | |
638 | /* What is the best fake section for LDST_UNKNOWN? */ | |
639 | case LDST_FUNCTION: | |
640 | s->section = &fake_text_section; | |
641 | break; | |
642 | case LDST_VARIABLE: | |
643 | if (syms[i].section_kind == LDSSK_BSS) | |
644 | s->section = &fake_bss_section; | |
645 | else | |
646 | s->section = &fake_data_section; | |
647 | break; | |
648 | } | |
649 | else | |
3d98c460 | 650 | s->section = &fake_text_section; |
ce3c775b NC |
651 | break; |
652 | default: | |
653 | BFD_ASSERT (0); | |
654 | } | |
655 | ||
656 | s->udata.p = (void *) &syms[i]; | |
657 | } | |
658 | ||
659 | return nsyms; | |
660 | } | |
661 | ||
662 | static void | |
663 | bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, | |
664 | PTR afile ATTRIBUTE_UNUSED, | |
665 | asymbol *symbol ATTRIBUTE_UNUSED, | |
666 | bfd_print_symbol_type how ATTRIBUTE_UNUSED) | |
667 | { | |
668 | BFD_ASSERT (0); | |
669 | } | |
670 | ||
671 | static void | |
672 | bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, | |
673 | asymbol *symbol, | |
674 | symbol_info *ret) | |
675 | { | |
676 | bfd_symbol_info (symbol, ret); | |
677 | } | |
678 | ||
679 | /* Make an empty symbol. */ | |
680 | ||
681 | static asymbol * | |
682 | bfd_plugin_make_empty_symbol (bfd *abfd) | |
683 | { | |
d3ce72d0 NC |
684 | asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); |
685 | if (new_symbol == NULL) | |
686 | return new_symbol; | |
687 | new_symbol->the_bfd = abfd; | |
688 | return new_symbol; | |
ce3c775b NC |
689 | } |
690 | ||
691 | static int | |
692 | bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, | |
693 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
694 | { | |
695 | BFD_ASSERT (0); | |
696 | return 0; | |
697 | } | |
698 | ||
ce3c775b NC |
699 | const bfd_target plugin_vec = |
700 | { | |
701 | "plugin", /* Name. */ | |
702 | bfd_target_unknown_flavour, | |
703 | BFD_ENDIAN_LITTLE, /* Target byte order. */ | |
704 | BFD_ENDIAN_LITTLE, /* Target headers byte order. */ | |
705 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
706 | HAS_LINENO | HAS_DEBUG | | |
707 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
708 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | |
709 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ | |
710 | 0, /* symbol_leading_char. */ | |
711 | '/', /* ar_pad_char. */ | |
712 | 15, /* ar_max_namelen. */ | |
64bfc258 | 713 | 255, /* match priority. */ |
ce3c775b NC |
714 | |
715 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
716 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
717 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
718 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
719 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
720 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
721 | ||
722 | { /* bfd_check_format. */ | |
723 | _bfd_dummy_target, | |
724 | bfd_plugin_object_p, | |
725 | bfd_generic_archive_p, | |
726 | _bfd_dummy_target | |
727 | }, | |
728 | { /* bfd_set_format. */ | |
d00dd7dc AM |
729 | _bfd_bool_bfd_false_error, |
730 | _bfd_bool_bfd_false_error, | |
ce3c775b | 731 | _bfd_generic_mkarchive, |
d00dd7dc | 732 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
733 | }, |
734 | { /* bfd_write_contents. */ | |
d00dd7dc AM |
735 | _bfd_bool_bfd_false_error, |
736 | _bfd_bool_bfd_false_error, | |
ce3c775b | 737 | _bfd_write_archive_contents, |
d00dd7dc | 738 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
739 | }, |
740 | ||
741 | BFD_JUMP_TABLE_GENERIC (bfd_plugin), | |
742 | BFD_JUMP_TABLE_COPY (bfd_plugin), | |
743 | BFD_JUMP_TABLE_CORE (bfd_plugin), | |
e6cc316a L |
744 | #ifdef USE_64_BIT_ARCHIVE |
745 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit), | |
746 | #else | |
ce3c775b | 747 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
e6cc316a | 748 | #endif |
ce3c775b NC |
749 | BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), |
750 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
751 | BFD_JUMP_TABLE_WRITE (bfd_plugin), | |
752 | BFD_JUMP_TABLE_LINK (bfd_plugin), | |
753 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
754 | ||
755 | NULL, | |
756 | ||
07d6d2b8 | 757 | NULL /* backend_data. */ |
ce3c775b | 758 | }; |
98950613 | 759 | #endif /* BFD_SUPPORTS_PLUGIN */ |