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6d03d481 | 1 | // plugin.cc -- plugin manager for gold -*- C++ -*- |
89fc3421 | 2 | |
0f3b89d8 | 3 | // Copyright 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
89fc3421 CC |
4 | // Written by Cary Coutant <ccoutant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
1c7814ed ILT |
23 | #include "gold.h" |
24 | ||
89fc3421 CC |
25 | #include <cstdio> |
26 | #include <cstdarg> | |
27 | #include <cstring> | |
28 | #include <string> | |
29 | #include <vector> | |
bc06c745 ILT |
30 | |
31 | #ifdef ENABLE_PLUGINS | |
89fc3421 | 32 | #include <dlfcn.h> |
bc06c745 | 33 | #endif |
89fc3421 | 34 | |
89fc3421 CC |
35 | #include "parameters.h" |
36 | #include "errors.h" | |
37 | #include "fileread.h" | |
38 | #include "layout.h" | |
39 | #include "options.h" | |
40 | #include "plugin.h" | |
41 | #include "target.h" | |
42 | #include "readsyms.h" | |
43 | #include "symtab.h" | |
44 | #include "elfcpp.h" | |
45 | ||
46 | namespace gold | |
47 | { | |
48 | ||
49 | #ifdef ENABLE_PLUGINS | |
50 | ||
51 | // The linker's exported interfaces. | |
52 | ||
53 | extern "C" | |
54 | { | |
55 | ||
56 | static enum ld_plugin_status | |
57 | register_claim_file(ld_plugin_claim_file_handler handler); | |
58 | ||
59 | static enum ld_plugin_status | |
60 | register_all_symbols_read(ld_plugin_all_symbols_read_handler handler); | |
61 | ||
62 | static enum ld_plugin_status | |
63 | register_cleanup(ld_plugin_cleanup_handler handler); | |
64 | ||
65 | static enum ld_plugin_status | |
66 | add_symbols(void *handle, int nsyms, const struct ld_plugin_symbol *syms); | |
67 | ||
0f7c0701 CC |
68 | static enum ld_plugin_status |
69 | get_input_file(const void *handle, struct ld_plugin_input_file *file); | |
70 | ||
9c793f14 RÁE |
71 | static enum ld_plugin_status |
72 | get_view(const void *handle, const void **viewp); | |
73 | ||
0f7c0701 CC |
74 | static enum ld_plugin_status |
75 | release_input_file(const void *handle); | |
76 | ||
89fc3421 CC |
77 | static enum ld_plugin_status |
78 | get_symbols(const void *handle, int nsyms, struct ld_plugin_symbol *syms); | |
79 | ||
235061c2 CC |
80 | static enum ld_plugin_status |
81 | get_symbols_v2(const void *handle, int nsyms, struct ld_plugin_symbol *syms); | |
82 | ||
89fc3421 | 83 | static enum ld_plugin_status |
6508b958 | 84 | add_input_file(const char *pathname); |
89fc3421 | 85 | |
e99daf92 | 86 | static enum ld_plugin_status |
6508b958 | 87 | add_input_library(const char *pathname); |
e99daf92 | 88 | |
42218b9f RÁE |
89 | static enum ld_plugin_status |
90 | set_extra_library_path(const char *path); | |
91 | ||
89fc3421 | 92 | static enum ld_plugin_status |
6c52134c | 93 | message(int level, const char *format, ...); |
89fc3421 | 94 | |
e9552f7e ST |
95 | static enum ld_plugin_status |
96 | get_input_section_count(const void* handle, unsigned int* count); | |
97 | ||
98 | static enum ld_plugin_status | |
99 | get_input_section_type(const struct ld_plugin_section section, | |
100 | unsigned int* type); | |
101 | ||
102 | static enum ld_plugin_status | |
103 | get_input_section_name(const struct ld_plugin_section section, | |
104 | char** section_name_ptr); | |
105 | ||
106 | static enum ld_plugin_status | |
107 | get_input_section_contents(const struct ld_plugin_section section, | |
108 | const unsigned char** section_contents, | |
109 | size_t* len); | |
110 | ||
111 | static enum ld_plugin_status | |
112 | update_section_order(const struct ld_plugin_section *section_list, | |
113 | unsigned int num_sections); | |
114 | ||
115 | static enum ld_plugin_status | |
116 | allow_section_ordering(); | |
117 | ||
89fc3421 CC |
118 | }; |
119 | ||
120 | #endif // ENABLE_PLUGINS | |
121 | ||
122 | static Pluginobj* make_sized_plugin_object(Input_file* input_file, | |
0f7c0701 | 123 | off_t offset, off_t filesize); |
89fc3421 CC |
124 | |
125 | // Plugin methods. | |
126 | ||
127 | // Load one plugin library. | |
128 | ||
129 | void | |
130 | Plugin::load() | |
131 | { | |
132 | #ifdef ENABLE_PLUGINS | |
89fc3421 CC |
133 | // Load the plugin library. |
134 | // FIXME: Look for the library in standard locations. | |
4674ecfc | 135 | this->handle_ = dlopen(this->filename_.c_str(), RTLD_NOW); |
89fc3421 CC |
136 | if (this->handle_ == NULL) |
137 | { | |
4802450a RÁE |
138 | gold_error(_("%s: could not load plugin library: %s"), |
139 | this->filename_.c_str(), dlerror()); | |
89fc3421 CC |
140 | return; |
141 | } | |
142 | ||
143 | // Find the plugin's onload entry point. | |
b59befec ILT |
144 | void* ptr = dlsym(this->handle_, "onload"); |
145 | if (ptr == NULL) | |
89fc3421 | 146 | { |
4674ecfc CC |
147 | gold_error(_("%s: could not find onload entry point"), |
148 | this->filename_.c_str()); | |
89fc3421 CC |
149 | return; |
150 | } | |
b59befec ILT |
151 | ld_plugin_onload onload; |
152 | gold_assert(sizeof(onload) == sizeof(ptr)); | |
153 | memcpy(&onload, &ptr, sizeof(ptr)); | |
89fc3421 CC |
154 | |
155 | // Get the linker's version number. | |
156 | const char* ver = get_version_string(); | |
157 | int major = 0; | |
158 | int minor = 0; | |
159 | sscanf(ver, "%d.%d", &major, &minor); | |
160 | ||
161 | // Allocate and populate a transfer vector. | |
235061c2 | 162 | const int tv_fixed_size = 24; |
e9552f7e | 163 | |
4674ecfc | 164 | int tv_size = this->args_.size() + tv_fixed_size; |
ca09d69a | 165 | ld_plugin_tv* tv = new ld_plugin_tv[tv_size]; |
89fc3421 | 166 | |
abc8dcba CC |
167 | // Put LDPT_MESSAGE at the front of the list so the plugin can use it |
168 | // while processing subsequent entries. | |
89fc3421 | 169 | int i = 0; |
abc8dcba CC |
170 | tv[i].tv_tag = LDPT_MESSAGE; |
171 | tv[i].tv_u.tv_message = message; | |
172 | ||
173 | ++i; | |
89fc3421 CC |
174 | tv[i].tv_tag = LDPT_API_VERSION; |
175 | tv[i].tv_u.tv_val = LD_PLUGIN_API_VERSION; | |
176 | ||
177 | ++i; | |
178 | tv[i].tv_tag = LDPT_GOLD_VERSION; | |
179 | tv[i].tv_u.tv_val = major * 100 + minor; | |
180 | ||
181 | ++i; | |
182 | tv[i].tv_tag = LDPT_LINKER_OUTPUT; | |
183 | if (parameters->options().relocatable()) | |
184 | tv[i].tv_u.tv_val = LDPO_REL; | |
185 | else if (parameters->options().shared()) | |
186 | tv[i].tv_u.tv_val = LDPO_DYN; | |
370e30b6 RÁE |
187 | else if (parameters->options().pie()) |
188 | tv[i].tv_u.tv_val = LDPO_PIE; | |
89fc3421 CC |
189 | else |
190 | tv[i].tv_u.tv_val = LDPO_EXEC; | |
191 | ||
3537c84b RÁE |
192 | ++i; |
193 | tv[i].tv_tag = LDPT_OUTPUT_NAME; | |
194 | tv[i].tv_u.tv_string = parameters->options().output(); | |
195 | ||
4674ecfc | 196 | for (unsigned int j = 0; j < this->args_.size(); ++j) |
89fc3421 CC |
197 | { |
198 | ++i; | |
199 | tv[i].tv_tag = LDPT_OPTION; | |
4674ecfc | 200 | tv[i].tv_u.tv_string = this->args_[j].c_str(); |
89fc3421 CC |
201 | } |
202 | ||
203 | ++i; | |
204 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
205 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
206 | ||
207 | ++i; | |
208 | tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK; | |
209 | tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read; | |
210 | ||
211 | ++i; | |
212 | tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK; | |
213 | tv[i].tv_u.tv_register_cleanup = register_cleanup; | |
214 | ||
215 | ++i; | |
216 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
217 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
218 | ||
0f7c0701 CC |
219 | ++i; |
220 | tv[i].tv_tag = LDPT_GET_INPUT_FILE; | |
221 | tv[i].tv_u.tv_get_input_file = get_input_file; | |
222 | ||
9c793f14 RÁE |
223 | ++i; |
224 | tv[i].tv_tag = LDPT_GET_VIEW; | |
225 | tv[i].tv_u.tv_get_view = get_view; | |
226 | ||
0f7c0701 CC |
227 | ++i; |
228 | tv[i].tv_tag = LDPT_RELEASE_INPUT_FILE; | |
229 | tv[i].tv_u.tv_release_input_file = release_input_file; | |
230 | ||
89fc3421 CC |
231 | ++i; |
232 | tv[i].tv_tag = LDPT_GET_SYMBOLS; | |
233 | tv[i].tv_u.tv_get_symbols = get_symbols; | |
234 | ||
235061c2 CC |
235 | ++i; |
236 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V2; | |
237 | tv[i].tv_u.tv_get_symbols = get_symbols_v2; | |
238 | ||
89fc3421 CC |
239 | ++i; |
240 | tv[i].tv_tag = LDPT_ADD_INPUT_FILE; | |
241 | tv[i].tv_u.tv_add_input_file = add_input_file; | |
242 | ||
e99daf92 ILT |
243 | ++i; |
244 | tv[i].tv_tag = LDPT_ADD_INPUT_LIBRARY; | |
245 | tv[i].tv_u.tv_add_input_library = add_input_library; | |
246 | ||
42218b9f RÁE |
247 | ++i; |
248 | tv[i].tv_tag = LDPT_SET_EXTRA_LIBRARY_PATH; | |
249 | tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path; | |
250 | ||
e9552f7e ST |
251 | ++i; |
252 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_COUNT; | |
253 | tv[i].tv_u.tv_get_input_section_count = get_input_section_count; | |
254 | ||
255 | ++i; | |
256 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_TYPE; | |
257 | tv[i].tv_u.tv_get_input_section_type = get_input_section_type; | |
258 | ||
259 | ++i; | |
260 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_NAME; | |
261 | tv[i].tv_u.tv_get_input_section_name = get_input_section_name; | |
262 | ||
263 | ++i; | |
264 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_CONTENTS; | |
265 | tv[i].tv_u.tv_get_input_section_contents = get_input_section_contents; | |
266 | ||
267 | ++i; | |
268 | tv[i].tv_tag = LDPT_UPDATE_SECTION_ORDER; | |
269 | tv[i].tv_u.tv_update_section_order = update_section_order; | |
270 | ||
271 | ++i; | |
272 | tv[i].tv_tag = LDPT_ALLOW_SECTION_ORDERING; | |
273 | tv[i].tv_u.tv_allow_section_ordering = allow_section_ordering; | |
274 | ||
89fc3421 CC |
275 | ++i; |
276 | tv[i].tv_tag = LDPT_NULL; | |
277 | tv[i].tv_u.tv_val = 0; | |
278 | ||
279 | gold_assert(i == tv_size - 1); | |
280 | ||
281 | // Call the onload entry point. | |
282 | (*onload)(tv); | |
283 | ||
6c52134c | 284 | delete[] tv; |
89fc3421 CC |
285 | #endif // ENABLE_PLUGINS |
286 | } | |
287 | ||
288 | // Call the plugin claim-file handler. | |
289 | ||
290 | inline bool | |
ca09d69a | 291 | Plugin::claim_file(struct ld_plugin_input_file* plugin_input_file) |
89fc3421 CC |
292 | { |
293 | int claimed = 0; | |
294 | ||
295 | if (this->claim_file_handler_ != NULL) | |
296 | { | |
297 | (*this->claim_file_handler_)(plugin_input_file, &claimed); | |
298 | if (claimed) | |
299 | return true; | |
300 | } | |
301 | return false; | |
302 | } | |
303 | ||
304 | // Call the all-symbols-read handler. | |
305 | ||
306 | inline void | |
307 | Plugin::all_symbols_read() | |
308 | { | |
309 | if (this->all_symbols_read_handler_ != NULL) | |
310 | (*this->all_symbols_read_handler_)(); | |
311 | } | |
312 | ||
313 | // Call the cleanup handler. | |
314 | ||
315 | inline void | |
316 | Plugin::cleanup() | |
317 | { | |
40f36857 CC |
318 | if (this->cleanup_handler_ != NULL && !this->cleanup_done_) |
319 | { | |
320 | // Set this flag before calling to prevent a recursive plunge | |
321 | // in the event that a plugin's cleanup handler issues a | |
322 | // fatal error. | |
323 | this->cleanup_done_ = true; | |
324 | (*this->cleanup_handler_)(); | |
325 | } | |
89fc3421 CC |
326 | } |
327 | ||
0f3b89d8 ILT |
328 | // This task is used to rescan archives as needed. |
329 | ||
330 | class Plugin_rescan : public Task | |
331 | { | |
332 | public: | |
333 | Plugin_rescan(Task_token* this_blocker, Task_token* next_blocker) | |
334 | : this_blocker_(this_blocker), next_blocker_(next_blocker) | |
335 | { } | |
336 | ||
337 | ~Plugin_rescan() | |
338 | { | |
339 | delete this->this_blocker_; | |
340 | } | |
341 | ||
342 | Task_token* | |
343 | is_runnable() | |
344 | { | |
345 | if (this->this_blocker_->is_blocked()) | |
346 | return this->this_blocker_; | |
347 | return NULL; | |
348 | } | |
349 | ||
350 | void | |
351 | locks(Task_locker* tl) | |
352 | { tl->add(this, this->next_blocker_); } | |
353 | ||
354 | void | |
355 | run(Workqueue*) | |
356 | { parameters->options().plugins()->rescan(this); } | |
357 | ||
358 | std::string | |
359 | get_name() const | |
360 | { return "Plugin_rescan"; } | |
361 | ||
362 | private: | |
363 | Task_token* this_blocker_; | |
364 | Task_token* next_blocker_; | |
365 | }; | |
366 | ||
89fc3421 CC |
367 | // Plugin_manager methods. |
368 | ||
369 | Plugin_manager::~Plugin_manager() | |
370 | { | |
371 | for (Plugin_list::iterator p = this->plugins_.begin(); | |
372 | p != this->plugins_.end(); | |
373 | ++p) | |
374 | delete *p; | |
375 | this->plugins_.clear(); | |
376 | for (Object_list::iterator obj = this->objects_.begin(); | |
377 | obj != this->objects_.end(); | |
378 | ++obj) | |
379 | delete *obj; | |
380 | this->objects_.clear(); | |
381 | } | |
382 | ||
383 | // Load all plugin libraries. | |
384 | ||
385 | void | |
e9552f7e | 386 | Plugin_manager::load_plugins(Layout* layout) |
89fc3421 | 387 | { |
e9552f7e | 388 | this->layout_ = layout; |
89fc3421 CC |
389 | for (this->current_ = this->plugins_.begin(); |
390 | this->current_ != this->plugins_.end(); | |
391 | ++this->current_) | |
392 | (*this->current_)->load(); | |
393 | } | |
394 | ||
395 | // Call the plugin claim-file handlers in turn to see if any claim the file. | |
396 | ||
397 | Pluginobj* | |
398 | Plugin_manager::claim_file(Input_file* input_file, off_t offset, | |
e9552f7e | 399 | off_t filesize, Object* elf_object) |
89fc3421 CC |
400 | { |
401 | if (this->in_replacement_phase_) | |
402 | return NULL; | |
403 | ||
404 | unsigned int handle = this->objects_.size(); | |
405 | this->input_file_ = input_file; | |
406 | this->plugin_input_file_.name = input_file->filename().c_str(); | |
407 | this->plugin_input_file_.fd = input_file->file().descriptor(); | |
408 | this->plugin_input_file_.offset = offset; | |
409 | this->plugin_input_file_.filesize = filesize; | |
410 | this->plugin_input_file_.handle = reinterpret_cast<void*>(handle); | |
e9552f7e ST |
411 | if (elf_object != NULL) |
412 | this->objects_.push_back(elf_object); | |
413 | this->in_claim_file_handler_ = true; | |
89fc3421 CC |
414 | |
415 | for (this->current_ = this->plugins_.begin(); | |
416 | this->current_ != this->plugins_.end(); | |
417 | ++this->current_) | |
418 | { | |
419 | if ((*this->current_)->claim_file(&this->plugin_input_file_)) | |
420 | { | |
0f3b89d8 | 421 | this->any_claimed_ = true; |
e9552f7e | 422 | this->in_claim_file_handler_ = false; |
0f3b89d8 | 423 | |
e9552f7e ST |
424 | if (this->objects_.size() > handle |
425 | && this->objects_[handle]->pluginobj() != NULL) | |
426 | return this->objects_[handle]->pluginobj(); | |
abc8dcba CC |
427 | |
428 | // If the plugin claimed the file but did not call the | |
429 | // add_symbols callback, we need to create the Pluginobj now. | |
430 | Pluginobj* obj = this->make_plugin_object(handle); | |
431 | return obj; | |
89fc3421 CC |
432 | } |
433 | } | |
434 | ||
e9552f7e | 435 | this->in_claim_file_handler_ = false; |
89fc3421 CC |
436 | return NULL; |
437 | } | |
438 | ||
0f3b89d8 ILT |
439 | // Save an archive. This is used so that a plugin can add a file |
440 | // which refers to a symbol which was not previously referenced. In | |
441 | // that case we want to pretend that the symbol was referenced before, | |
442 | // and pull in the archive object. | |
443 | ||
444 | void | |
445 | Plugin_manager::save_archive(Archive* archive) | |
446 | { | |
447 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
448 | delete archive; | |
449 | else | |
450 | this->rescannable_.push_back(Rescannable(archive)); | |
451 | } | |
452 | ||
453 | // Save an Input_group. This is like save_archive. | |
454 | ||
455 | void | |
456 | Plugin_manager::save_input_group(Input_group* input_group) | |
457 | { | |
458 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
459 | delete input_group; | |
460 | else | |
461 | this->rescannable_.push_back(Rescannable(input_group)); | |
462 | } | |
463 | ||
89fc3421 CC |
464 | // Call the all-symbols-read handlers. |
465 | ||
466 | void | |
0f7c0701 | 467 | Plugin_manager::all_symbols_read(Workqueue* workqueue, Task* task, |
89fc3421 | 468 | Input_objects* input_objects, |
e9552f7e | 469 | Symbol_table* symtab, |
89fc3421 CC |
470 | Dirsearch* dirpath, Mapfile* mapfile, |
471 | Task_token** last_blocker) | |
472 | { | |
473 | this->in_replacement_phase_ = true; | |
474 | this->workqueue_ = workqueue; | |
0f7c0701 | 475 | this->task_ = task; |
89fc3421 CC |
476 | this->input_objects_ = input_objects; |
477 | this->symtab_ = symtab; | |
89fc3421 CC |
478 | this->dirpath_ = dirpath; |
479 | this->mapfile_ = mapfile; | |
480 | this->this_blocker_ = NULL; | |
481 | ||
482 | for (this->current_ = this->plugins_.begin(); | |
483 | this->current_ != this->plugins_.end(); | |
484 | ++this->current_) | |
485 | (*this->current_)->all_symbols_read(); | |
486 | ||
0f3b89d8 ILT |
487 | if (this->any_added_) |
488 | { | |
489 | Task_token* next_blocker = new Task_token(true); | |
490 | next_blocker->add_blocker(); | |
491 | workqueue->queue(new Plugin_rescan(this->this_blocker_, next_blocker)); | |
492 | this->this_blocker_ = next_blocker; | |
493 | } | |
494 | ||
89fc3421 CC |
495 | *last_blocker = this->this_blocker_; |
496 | } | |
497 | ||
0f3b89d8 ILT |
498 | // This is called when we see a new undefined symbol. If we are in |
499 | // the replacement phase, this means that we may need to rescan some | |
500 | // archives we have previously seen. | |
501 | ||
502 | void | |
503 | Plugin_manager::new_undefined_symbol(Symbol* sym) | |
504 | { | |
505 | if (this->in_replacement_phase_) | |
506 | this->undefined_symbols_.push_back(sym); | |
507 | } | |
508 | ||
509 | // Rescan archives as needed. This handles the case where a new | |
510 | // object file added by a plugin has an undefined reference to some | |
511 | // symbol defined in an archive. | |
512 | ||
513 | void | |
514 | Plugin_manager::rescan(Task* task) | |
515 | { | |
516 | size_t rescan_pos = 0; | |
517 | size_t rescan_size = this->rescannable_.size(); | |
518 | while (!this->undefined_symbols_.empty()) | |
519 | { | |
520 | if (rescan_pos >= rescan_size) | |
521 | { | |
522 | this->undefined_symbols_.clear(); | |
523 | return; | |
524 | } | |
525 | ||
526 | Undefined_symbol_list undefs; | |
527 | undefs.reserve(this->undefined_symbols_.size()); | |
528 | this->undefined_symbols_.swap(undefs); | |
529 | ||
530 | size_t min_rescan_pos = rescan_size; | |
531 | ||
532 | for (Undefined_symbol_list::const_iterator p = undefs.begin(); | |
533 | p != undefs.end(); | |
534 | ++p) | |
535 | { | |
536 | if (!(*p)->is_undefined()) | |
537 | continue; | |
538 | ||
539 | this->undefined_symbols_.push_back(*p); | |
540 | ||
541 | // Find the first rescan archive which defines this symbol, | |
542 | // starting at the current rescan position. The rescan position | |
543 | // exists so that given -la -lb -lc we don't look for undefined | |
544 | // symbols in -lb back in -la, but instead get the definition | |
545 | // from -lc. Don't bother to look past the current minimum | |
546 | // rescan position. | |
547 | for (size_t i = rescan_pos; i < min_rescan_pos; ++i) | |
548 | { | |
549 | if (this->rescannable_defines(i, *p)) | |
550 | { | |
551 | min_rescan_pos = i; | |
552 | break; | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
557 | if (min_rescan_pos >= rescan_size) | |
558 | { | |
559 | // We didn't find any rescannable archives which define any | |
560 | // undefined symbols. | |
561 | return; | |
562 | } | |
563 | ||
564 | const Rescannable& r(this->rescannable_[min_rescan_pos]); | |
565 | if (r.is_archive) | |
566 | { | |
567 | Task_lock_obj<Archive> tl(task, r.u.archive); | |
568 | r.u.archive->add_symbols(this->symtab_, this->layout_, | |
569 | this->input_objects_, this->mapfile_); | |
570 | } | |
571 | else | |
572 | { | |
573 | size_t next_saw_undefined = this->symtab_->saw_undefined(); | |
574 | size_t saw_undefined; | |
575 | do | |
576 | { | |
577 | saw_undefined = next_saw_undefined; | |
578 | ||
579 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
580 | p != r.u.input_group->end(); | |
581 | ++p) | |
582 | { | |
583 | Task_lock_obj<Archive> tl(task, *p); | |
584 | ||
585 | (*p)->add_symbols(this->symtab_, this->layout_, | |
586 | this->input_objects_, this->mapfile_); | |
587 | } | |
588 | ||
589 | next_saw_undefined = this->symtab_->saw_undefined(); | |
590 | } | |
591 | while (saw_undefined != next_saw_undefined); | |
592 | } | |
593 | ||
594 | for (size_t i = rescan_pos; i < min_rescan_pos + 1; ++i) | |
595 | { | |
596 | if (this->rescannable_[i].is_archive) | |
597 | delete this->rescannable_[i].u.archive; | |
598 | else | |
599 | delete this->rescannable_[i].u.input_group; | |
600 | } | |
601 | ||
602 | rescan_pos = min_rescan_pos + 1; | |
603 | } | |
604 | } | |
605 | ||
606 | // Return whether the rescannable at index I defines SYM. | |
607 | ||
608 | bool | |
609 | Plugin_manager::rescannable_defines(size_t i, Symbol* sym) | |
610 | { | |
611 | const Rescannable& r(this->rescannable_[i]); | |
612 | if (r.is_archive) | |
613 | return r.u.archive->defines_symbol(sym); | |
614 | else | |
615 | { | |
616 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
617 | p != r.u.input_group->end(); | |
618 | ++p) | |
619 | { | |
620 | if ((*p)->defines_symbol(sym)) | |
621 | return true; | |
622 | } | |
623 | return false; | |
624 | } | |
625 | } | |
626 | ||
483620e8 | 627 | // Layout deferred objects. |
89fc3421 CC |
628 | |
629 | void | |
483620e8 | 630 | Plugin_manager::layout_deferred_objects() |
89fc3421 | 631 | { |
5995b570 CC |
632 | Deferred_layout_list::iterator obj; |
633 | ||
634 | for (obj = this->deferred_layout_objects_.begin(); | |
635 | obj != this->deferred_layout_objects_.end(); | |
636 | ++obj) | |
5f9bcf58 CC |
637 | { |
638 | // Lock the object so we can read from it. This is only called | |
639 | // single-threaded from queue_middle_tasks, so it is OK to lock. | |
640 | // Unfortunately we have no way to pass in a Task token. | |
641 | const Task* dummy_task = reinterpret_cast<const Task*>(-1); | |
642 | Task_lock_obj<Object> tl(dummy_task, *obj); | |
643 | (*obj)->layout_deferred_sections(this->layout_); | |
644 | } | |
483620e8 CC |
645 | } |
646 | ||
647 | // Call the cleanup handlers. | |
5995b570 | 648 | |
483620e8 CC |
649 | void |
650 | Plugin_manager::cleanup() | |
651 | { | |
89fc3421 CC |
652 | for (this->current_ = this->plugins_.begin(); |
653 | this->current_ != this->plugins_.end(); | |
654 | ++this->current_) | |
655 | (*this->current_)->cleanup(); | |
656 | } | |
657 | ||
658 | // Make a new Pluginobj object. This is called when the plugin calls | |
659 | // the add_symbols API. | |
660 | ||
661 | Pluginobj* | |
662 | Plugin_manager::make_plugin_object(unsigned int handle) | |
663 | { | |
664 | // Make sure we aren't asked to make an object for the same handle twice. | |
e9552f7e ST |
665 | if (this->objects_.size() != handle |
666 | && this->objects_[handle]->pluginobj() != NULL) | |
89fc3421 CC |
667 | return NULL; |
668 | ||
669 | Pluginobj* obj = make_sized_plugin_object(this->input_file_, | |
0f7c0701 CC |
670 | this->plugin_input_file_.offset, |
671 | this->plugin_input_file_.filesize); | |
e9552f7e ST |
672 | |
673 | ||
674 | // If the elf object for this file was pushed into the objects_ vector, delete | |
675 | // it to make room for the Pluginobj as this file is claimed. | |
676 | if (this->objects_.size() != handle) | |
677 | this->objects_.pop_back(); | |
678 | ||
89fc3421 CC |
679 | this->objects_.push_back(obj); |
680 | return obj; | |
681 | } | |
682 | ||
0f7c0701 CC |
683 | // Get the input file information with an open (possibly re-opened) |
684 | // file descriptor. | |
685 | ||
686 | ld_plugin_status | |
687 | Plugin_manager::get_input_file(unsigned int handle, | |
ca09d69a | 688 | struct ld_plugin_input_file* file) |
0f7c0701 | 689 | { |
e9552f7e | 690 | Pluginobj* obj = this->object(handle)->pluginobj(); |
0f7c0701 CC |
691 | if (obj == NULL) |
692 | return LDPS_BAD_HANDLE; | |
693 | ||
694 | obj->lock(this->task_); | |
695 | file->name = obj->filename().c_str(); | |
696 | file->fd = obj->descriptor(); | |
697 | file->offset = obj->offset(); | |
698 | file->filesize = obj->filesize(); | |
699 | file->handle = reinterpret_cast<void*>(handle); | |
700 | return LDPS_OK; | |
701 | } | |
702 | ||
703 | // Release the input file. | |
704 | ||
705 | ld_plugin_status | |
706 | Plugin_manager::release_input_file(unsigned int handle) | |
707 | { | |
e9552f7e ST |
708 | if (this->object(handle) == NULL) |
709 | return LDPS_BAD_HANDLE; | |
710 | ||
711 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
712 | ||
0f7c0701 CC |
713 | if (obj == NULL) |
714 | return LDPS_BAD_HANDLE; | |
715 | ||
716 | obj->unlock(this->task_); | |
717 | return LDPS_OK; | |
718 | } | |
719 | ||
e9552f7e ST |
720 | // Get the elf object corresponding to the handle. Return NULL if we |
721 | // found a Pluginobj instead. | |
722 | ||
723 | Object* | |
724 | Plugin_manager::get_elf_object(const void* handle) | |
725 | { | |
726 | Object* obj = this->object( | |
727 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
728 | ||
729 | // The object should not be a Pluginobj. | |
730 | if (obj == NULL | |
731 | || obj->pluginobj() != NULL) | |
732 | return NULL; | |
733 | ||
734 | return obj; | |
735 | } | |
736 | ||
9c793f14 RÁE |
737 | ld_plugin_status |
738 | Plugin_manager::get_view(unsigned int handle, const void **viewp) | |
739 | { | |
740 | off_t offset; | |
741 | size_t filesize; | |
742 | Input_file *input_file; | |
e9552f7e | 743 | if (this->in_claim_file_handler_) |
9c793f14 RÁE |
744 | { |
745 | // We are being called from the claim_file hook. | |
746 | const struct ld_plugin_input_file &f = this->plugin_input_file_; | |
747 | offset = f.offset; | |
748 | filesize = f.filesize; | |
749 | input_file = this->input_file_; | |
750 | } | |
751 | else | |
752 | { | |
753 | // An already claimed file. | |
e9552f7e ST |
754 | if (this->object(handle) == NULL) |
755 | return LDPS_BAD_HANDLE; | |
756 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
9c793f14 RÁE |
757 | if (obj == NULL) |
758 | return LDPS_BAD_HANDLE; | |
759 | offset = obj->offset(); | |
760 | filesize = obj->filesize(); | |
761 | input_file = obj->input_file(); | |
762 | } | |
763 | *viewp = (void*) input_file->file().get_view(offset, 0, filesize, false, | |
764 | false); | |
765 | return LDPS_OK; | |
766 | } | |
767 | ||
42218b9f RÁE |
768 | // Add a new library path. |
769 | ||
770 | ld_plugin_status | |
ca09d69a | 771 | Plugin_manager::set_extra_library_path(const char* path) |
42218b9f RÁE |
772 | { |
773 | this->extra_search_path_ = std::string(path); | |
774 | return LDPS_OK; | |
775 | } | |
776 | ||
89fc3421 CC |
777 | // Add a new input file. |
778 | ||
779 | ld_plugin_status | |
ca09d69a | 780 | Plugin_manager::add_input_file(const char* pathname, bool is_lib) |
89fc3421 | 781 | { |
ae3b5189 CD |
782 | Input_file_argument file(pathname, |
783 | (is_lib | |
784 | ? Input_file_argument::INPUT_FILE_TYPE_LIBRARY | |
785 | : Input_file_argument::INPUT_FILE_TYPE_FILE), | |
42218b9f RÁE |
786 | (is_lib |
787 | ? this->extra_search_path_.c_str() | |
788 | : ""), | |
789 | false, | |
790 | this->options_); | |
89fc3421 CC |
791 | Input_argument* input_argument = new Input_argument(file); |
792 | Task_token* next_blocker = new Task_token(true); | |
793 | next_blocker->add_blocker(); | |
8c21d9d3 | 794 | if (parameters->incremental()) |
40f36857 CC |
795 | gold_error(_("input files added by plug-ins in --incremental mode not " |
796 | "supported yet")); | |
f1ed28fb | 797 | this->workqueue_->queue_soon(new Read_symbols(this->input_objects_, |
89fc3421 CC |
798 | this->symtab_, |
799 | this->layout_, | |
800 | this->dirpath_, | |
15f8229b | 801 | 0, |
89fc3421 CC |
802 | this->mapfile_, |
803 | input_argument, | |
804 | NULL, | |
b0193076 | 805 | NULL, |
89fc3421 CC |
806 | this->this_blocker_, |
807 | next_blocker)); | |
808 | this->this_blocker_ = next_blocker; | |
0f3b89d8 | 809 | this->any_added_ = true; |
89fc3421 CC |
810 | return LDPS_OK; |
811 | } | |
812 | ||
813 | // Class Pluginobj. | |
814 | ||
2ea97941 ILT |
815 | Pluginobj::Pluginobj(const std::string& name, Input_file* input_file, |
816 | off_t offset, off_t filesize) | |
817 | : Object(name, input_file, false, offset), | |
818 | nsyms_(0), syms_(NULL), symbols_(), filesize_(filesize), comdat_map_() | |
89fc3421 CC |
819 | { |
820 | } | |
821 | ||
235061c2 | 822 | // Return TRUE if a defined symbol is referenced from outside the |
f7c5b166 CC |
823 | // universe of claimed objects. Only references from relocatable, |
824 | // non-IR (unclaimed) objects count as a reference. References from | |
825 | // dynamic objects count only as "visible". | |
d66a9eb3 CC |
826 | |
827 | static inline bool | |
235061c2 | 828 | is_referenced_from_outside(Symbol* lsym) |
d66a9eb3 CC |
829 | { |
830 | if (lsym->in_real_elf()) | |
831 | return true; | |
832 | if (parameters->options().relocatable()) | |
833 | return true; | |
84ced98a RÁE |
834 | if (parameters->options().is_undefined(lsym->name())) |
835 | return true; | |
235061c2 CC |
836 | return false; |
837 | } | |
838 | ||
839 | // Return TRUE if a defined symbol might be reachable from outside the | |
840 | // load module. | |
841 | ||
842 | static inline bool | |
843 | is_visible_from_outside(Symbol* lsym) | |
844 | { | |
f7c5b166 CC |
845 | if (lsym->in_dyn()) |
846 | return true; | |
d66a9eb3 CC |
847 | if (parameters->options().export_dynamic() || parameters->options().shared()) |
848 | return lsym->is_externally_visible(); | |
849 | return false; | |
850 | } | |
851 | ||
89fc3421 CC |
852 | // Get symbol resolution info. |
853 | ||
854 | ld_plugin_status | |
235061c2 CC |
855 | Pluginobj::get_symbol_resolution_info(int nsyms, |
856 | ld_plugin_symbol* syms, | |
857 | int version) const | |
858 | { | |
859 | // For version 1 of this interface, we cannot use | |
860 | // LDPR_PREVAILING_DEF_IRONLY_EXP, so we return LDPR_PREVAILING_DEF | |
861 | // instead. | |
862 | const ld_plugin_symbol_resolution ldpr_prevailing_def_ironly_exp | |
863 | = (version > 1 | |
864 | ? LDPR_PREVAILING_DEF_IRONLY_EXP | |
865 | : LDPR_PREVAILING_DEF); | |
866 | ||
abc8dcba | 867 | if (nsyms > this->nsyms_) |
89fc3421 | 868 | return LDPS_NO_SYMS; |
b0193076 RÁE |
869 | |
870 | if (static_cast<size_t>(nsyms) > this->symbols_.size()) | |
871 | { | |
872 | // We never decided to include this object. We mark all symbols as | |
873 | // preempted. | |
ca09d69a | 874 | gold_assert(this->symbols_.size() == 0); |
b0193076 RÁE |
875 | for (int i = 0; i < nsyms; i++) |
876 | syms[i].resolution = LDPR_PREEMPTED_REG; | |
877 | return LDPS_OK; | |
878 | } | |
879 | ||
89fc3421 CC |
880 | for (int i = 0; i < nsyms; i++) |
881 | { | |
882 | ld_plugin_symbol* isym = &syms[i]; | |
883 | Symbol* lsym = this->symbols_[i]; | |
884 | ld_plugin_symbol_resolution res = LDPR_UNKNOWN; | |
885 | ||
886 | if (lsym->is_undefined()) | |
887 | // The symbol remains undefined. | |
888 | res = LDPR_UNDEF; | |
889 | else if (isym->def == LDPK_UNDEF | |
890 | || isym->def == LDPK_WEAKUNDEF | |
891 | || isym->def == LDPK_COMMON) | |
892 | { | |
893 | // The original symbol was undefined or common. | |
894 | if (lsym->source() != Symbol::FROM_OBJECT) | |
895 | res = LDPR_RESOLVED_EXEC; | |
be234d88 | 896 | else if (lsym->object()->pluginobj() == this) |
235061c2 CC |
897 | { |
898 | if (is_referenced_from_outside(lsym)) | |
899 | res = LDPR_PREVAILING_DEF; | |
900 | else if (is_visible_from_outside(lsym)) | |
901 | res = ldpr_prevailing_def_ironly_exp; | |
902 | else | |
903 | res = LDPR_PREVAILING_DEF_IRONLY; | |
904 | } | |
89fc3421 CC |
905 | else if (lsym->object()->pluginobj() != NULL) |
906 | res = LDPR_RESOLVED_IR; | |
907 | else if (lsym->object()->is_dynamic()) | |
908 | res = LDPR_RESOLVED_DYN; | |
909 | else | |
910 | res = LDPR_RESOLVED_EXEC; | |
911 | } | |
912 | else | |
913 | { | |
914 | // The original symbol was a definition. | |
915 | if (lsym->source() != Symbol::FROM_OBJECT) | |
916 | res = LDPR_PREEMPTED_REG; | |
917 | else if (lsym->object() == static_cast<const Object*>(this)) | |
235061c2 CC |
918 | { |
919 | if (is_referenced_from_outside(lsym)) | |
920 | res = LDPR_PREVAILING_DEF; | |
921 | else if (is_visible_from_outside(lsym)) | |
922 | res = ldpr_prevailing_def_ironly_exp; | |
923 | else | |
924 | res = LDPR_PREVAILING_DEF_IRONLY; | |
925 | } | |
89fc3421 CC |
926 | else |
927 | res = (lsym->object()->pluginobj() != NULL | |
928 | ? LDPR_PREEMPTED_IR | |
929 | : LDPR_PREEMPTED_REG); | |
930 | } | |
931 | isym->resolution = res; | |
932 | } | |
933 | return LDPS_OK; | |
934 | } | |
935 | ||
936 | // Return TRUE if the comdat group with key COMDAT_KEY from this object | |
937 | // should be kept. | |
938 | ||
939 | bool | |
2ea97941 | 940 | Pluginobj::include_comdat_group(std::string comdat_key, Layout* layout) |
89fc3421 CC |
941 | { |
942 | std::pair<Comdat_map::iterator, bool> ins = | |
943 | this->comdat_map_.insert(std::make_pair(comdat_key, false)); | |
944 | ||
945 | // If this is the first time we've seen this comdat key, ask the | |
946 | // layout object whether it should be included. | |
947 | if (ins.second) | |
2ea97941 ILT |
948 | ins.first->second = layout->find_or_add_kept_section(comdat_key, |
949 | NULL, 0, true, | |
950 | true, NULL); | |
89fc3421 CC |
951 | |
952 | return ins.first->second; | |
953 | } | |
954 | ||
955 | // Class Sized_pluginobj. | |
956 | ||
957 | template<int size, bool big_endian> | |
958 | Sized_pluginobj<size, big_endian>::Sized_pluginobj( | |
2ea97941 ILT |
959 | const std::string& name, |
960 | Input_file* input_file, | |
961 | off_t offset, | |
962 | off_t filesize) | |
963 | : Pluginobj(name, input_file, offset, filesize) | |
89fc3421 CC |
964 | { |
965 | } | |
966 | ||
967 | // Read the symbols. Not used for plugin objects. | |
968 | ||
969 | template<int size, bool big_endian> | |
970 | void | |
971 | Sized_pluginobj<size, big_endian>::do_read_symbols(Read_symbols_data*) | |
972 | { | |
973 | gold_unreachable(); | |
974 | } | |
975 | ||
976 | // Lay out the input sections. Not used for plugin objects. | |
977 | ||
978 | template<int size, bool big_endian> | |
979 | void | |
980 | Sized_pluginobj<size, big_endian>::do_layout(Symbol_table*, Layout*, | |
981 | Read_symbols_data*) | |
982 | { | |
983 | gold_unreachable(); | |
984 | } | |
985 | ||
986 | // Add the symbols to the symbol table. | |
987 | ||
89fc3421 CC |
988 | template<int size, bool big_endian> |
989 | void | |
990 | Sized_pluginobj<size, big_endian>::do_add_symbols(Symbol_table* symtab, | |
f488e4b0 | 991 | Read_symbols_data*, |
2ea97941 | 992 | Layout* layout) |
89fc3421 CC |
993 | { |
994 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
995 | unsigned char symbuf[sym_size]; | |
996 | elfcpp::Sym<size, big_endian> sym(symbuf); | |
997 | elfcpp::Sym_write<size, big_endian> osym(symbuf); | |
998 | ||
999 | typedef typename elfcpp::Elf_types<size>::Elf_WXword Elf_size_type; | |
1000 | ||
1001 | this->symbols_.resize(this->nsyms_); | |
1002 | ||
1003 | for (int i = 0; i < this->nsyms_; ++i) | |
1004 | { | |
ca09d69a | 1005 | const struct ld_plugin_symbol* isym = &this->syms_[i]; |
2ea97941 | 1006 | const char* name = isym->name; |
89fc3421 CC |
1007 | const char* ver = isym->version; |
1008 | elfcpp::Elf_Half shndx; | |
1009 | elfcpp::STB bind; | |
1010 | elfcpp::STV vis; | |
1011 | ||
2ea97941 ILT |
1012 | if (name != NULL && name[0] == '\0') |
1013 | name = NULL; | |
89fc3421 CC |
1014 | if (ver != NULL && ver[0] == '\0') |
1015 | ver = NULL; | |
1016 | ||
1017 | switch (isym->def) | |
1018 | { | |
1019 | case LDPK_WEAKDEF: | |
1020 | case LDPK_WEAKUNDEF: | |
1021 | bind = elfcpp::STB_WEAK; | |
1022 | break; | |
1023 | case LDPK_DEF: | |
1024 | case LDPK_UNDEF: | |
1025 | case LDPK_COMMON: | |
1026 | default: | |
1027 | bind = elfcpp::STB_GLOBAL; | |
1028 | break; | |
1029 | } | |
1030 | ||
1031 | switch (isym->def) | |
1032 | { | |
1033 | case LDPK_DEF: | |
1034 | case LDPK_WEAKDEF: | |
1035 | shndx = elfcpp::SHN_ABS; | |
1036 | break; | |
1037 | case LDPK_COMMON: | |
1038 | shndx = elfcpp::SHN_COMMON; | |
1039 | break; | |
1040 | case LDPK_UNDEF: | |
1041 | case LDPK_WEAKUNDEF: | |
1042 | default: | |
1043 | shndx = elfcpp::SHN_UNDEF; | |
1044 | break; | |
1045 | } | |
1046 | ||
1047 | switch (isym->visibility) | |
1048 | { | |
1049 | case LDPV_PROTECTED: | |
105b6afd | 1050 | vis = elfcpp::STV_PROTECTED; |
89fc3421 CC |
1051 | break; |
1052 | case LDPV_INTERNAL: | |
105b6afd | 1053 | vis = elfcpp::STV_INTERNAL; |
89fc3421 CC |
1054 | break; |
1055 | case LDPV_HIDDEN: | |
105b6afd | 1056 | vis = elfcpp::STV_HIDDEN; |
89fc3421 CC |
1057 | break; |
1058 | case LDPV_DEFAULT: | |
1059 | default: | |
1060 | vis = elfcpp::STV_DEFAULT; | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | if (isym->comdat_key != NULL | |
1065 | && isym->comdat_key[0] != '\0' | |
2ea97941 | 1066 | && !this->include_comdat_group(isym->comdat_key, layout)) |
89fc3421 CC |
1067 | shndx = elfcpp::SHN_UNDEF; |
1068 | ||
1069 | osym.put_st_name(0); | |
1070 | osym.put_st_value(0); | |
1071 | osym.put_st_size(static_cast<Elf_size_type>(isym->size)); | |
1072 | osym.put_st_info(bind, elfcpp::STT_NOTYPE); | |
1073 | osym.put_st_other(vis, 0); | |
1074 | osym.put_st_shndx(shndx); | |
1075 | ||
1076 | this->symbols_[i] = | |
2ea97941 | 1077 | symtab->add_from_pluginobj<size, big_endian>(this, name, ver, &sym); |
89fc3421 CC |
1078 | } |
1079 | } | |
1080 | ||
b0193076 RÁE |
1081 | template<int size, bool big_endian> |
1082 | Archive::Should_include | |
1083 | Sized_pluginobj<size, big_endian>::do_should_include_member( | |
88a4108b ILT |
1084 | Symbol_table* symtab, |
1085 | Layout* layout, | |
1086 | Read_symbols_data*, | |
1087 | std::string* why) | |
b0193076 RÁE |
1088 | { |
1089 | char* tmpbuf = NULL; | |
1090 | size_t tmpbuflen = 0; | |
1091 | ||
88a4108b ILT |
1092 | for (int i = 0; i < this->nsyms_; ++i) |
1093 | { | |
1094 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
1095 | const char* name = sym.name; | |
1096 | Symbol* symbol; | |
1097 | Archive::Should_include t = Archive::should_include_member(symtab, | |
1098 | layout, | |
1099 | name, | |
1100 | &symbol, why, | |
1101 | &tmpbuf, | |
1102 | &tmpbuflen); | |
b0193076 RÁE |
1103 | if (t == Archive::SHOULD_INCLUDE_YES) |
1104 | { | |
1105 | if (tmpbuf != NULL) | |
1106 | free(tmpbuf); | |
1107 | return t; | |
1108 | } | |
88a4108b | 1109 | } |
b0193076 RÁE |
1110 | if (tmpbuf != NULL) |
1111 | free(tmpbuf); | |
1112 | return Archive::SHOULD_INCLUDE_UNKNOWN; | |
1113 | } | |
1114 | ||
e0c52780 CC |
1115 | // Iterate over global symbols, calling a visitor class V for each. |
1116 | ||
1117 | template<int size, bool big_endian> | |
1118 | void | |
1119 | Sized_pluginobj<size, big_endian>::do_for_all_global_symbols( | |
1120 | Read_symbols_data*, | |
1121 | Library_base::Symbol_visitor_base* v) | |
1122 | { | |
1123 | for (int i = 0; i < this->nsyms_; ++i) | |
1124 | { | |
1125 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
1126 | if (sym.def != LDPK_UNDEF) | |
1127 | v->visit(sym.name); | |
1128 | } | |
1129 | } | |
1130 | ||
cdc29364 CC |
1131 | // Iterate over local symbols, calling a visitor class V for each GOT offset |
1132 | // associated with a local symbol. | |
1133 | template<int size, bool big_endian> | |
1134 | void | |
1135 | Sized_pluginobj<size, big_endian>::do_for_all_local_got_entries( | |
1136 | Got_offset_list::Visitor*) const | |
1137 | { | |
1138 | gold_unreachable(); | |
1139 | } | |
1140 | ||
89fc3421 CC |
1141 | // Get the size of a section. Not used for plugin objects. |
1142 | ||
1143 | template<int size, bool big_endian> | |
1144 | uint64_t | |
1145 | Sized_pluginobj<size, big_endian>::do_section_size(unsigned int) | |
1146 | { | |
1147 | gold_unreachable(); | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | // Get the name of a section. Not used for plugin objects. | |
1152 | ||
1153 | template<int size, bool big_endian> | |
1154 | std::string | |
1155 | Sized_pluginobj<size, big_endian>::do_section_name(unsigned int) | |
1156 | { | |
1157 | gold_unreachable(); | |
1158 | return std::string(); | |
1159 | } | |
1160 | ||
1161 | // Return a view of the contents of a section. Not used for plugin objects. | |
1162 | ||
1163 | template<int size, bool big_endian> | |
c1027032 CC |
1164 | const unsigned char* |
1165 | Sized_pluginobj<size, big_endian>::do_section_contents( | |
1166 | unsigned int, | |
1167 | section_size_type*, | |
1168 | bool) | |
89fc3421 | 1169 | { |
89fc3421 | 1170 | gold_unreachable(); |
c1027032 | 1171 | return NULL; |
89fc3421 CC |
1172 | } |
1173 | ||
1174 | // Return section flags. Not used for plugin objects. | |
1175 | ||
1176 | template<int size, bool big_endian> | |
1177 | uint64_t | |
1178 | Sized_pluginobj<size, big_endian>::do_section_flags(unsigned int) | |
1179 | { | |
1180 | gold_unreachable(); | |
1181 | return 0; | |
1182 | } | |
1183 | ||
ef15dade ST |
1184 | // Return section entsize. Not used for plugin objects. |
1185 | ||
1186 | template<int size, bool big_endian> | |
1187 | uint64_t | |
1188 | Sized_pluginobj<size, big_endian>::do_section_entsize(unsigned int) | |
1189 | { | |
1190 | gold_unreachable(); | |
1191 | return 0; | |
1192 | } | |
1193 | ||
89fc3421 CC |
1194 | // Return section address. Not used for plugin objects. |
1195 | ||
1196 | template<int size, bool big_endian> | |
1197 | uint64_t | |
1198 | Sized_pluginobj<size, big_endian>::do_section_address(unsigned int) | |
1199 | { | |
1200 | gold_unreachable(); | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | // Return section type. Not used for plugin objects. | |
1205 | ||
1206 | template<int size, bool big_endian> | |
1207 | unsigned int | |
1208 | Sized_pluginobj<size, big_endian>::do_section_type(unsigned int) | |
1209 | { | |
1210 | gold_unreachable(); | |
1211 | return 0; | |
1212 | } | |
1213 | ||
1214 | // Return the section link field. Not used for plugin objects. | |
1215 | ||
1216 | template<int size, bool big_endian> | |
1217 | unsigned int | |
1218 | Sized_pluginobj<size, big_endian>::do_section_link(unsigned int) | |
1219 | { | |
1220 | gold_unreachable(); | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | // Return the section link field. Not used for plugin objects. | |
1225 | ||
1226 | template<int size, bool big_endian> | |
1227 | unsigned int | |
1228 | Sized_pluginobj<size, big_endian>::do_section_info(unsigned int) | |
1229 | { | |
1230 | gold_unreachable(); | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | // Return the section alignment. Not used for plugin objects. | |
1235 | ||
1236 | template<int size, bool big_endian> | |
1237 | uint64_t | |
1238 | Sized_pluginobj<size, big_endian>::do_section_addralign(unsigned int) | |
1239 | { | |
1240 | gold_unreachable(); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | // Return the Xindex structure to use. Not used for plugin objects. | |
1245 | ||
1246 | template<int size, bool big_endian> | |
1247 | Xindex* | |
1248 | Sized_pluginobj<size, big_endian>::do_initialize_xindex() | |
1249 | { | |
1250 | gold_unreachable(); | |
1251 | return NULL; | |
1252 | } | |
1253 | ||
53bbcc1b CC |
1254 | // Get symbol counts. Don't count plugin objects; the replacement |
1255 | // files will provide the counts. | |
89fc3421 CC |
1256 | |
1257 | template<int size, bool big_endian> | |
1258 | void | |
53bbcc1b CC |
1259 | Sized_pluginobj<size, big_endian>::do_get_global_symbol_counts( |
1260 | const Symbol_table*, | |
1261 | size_t* defined, | |
1262 | size_t* used) const | |
89fc3421 | 1263 | { |
53bbcc1b CC |
1264 | *defined = 0; |
1265 | *used = 0; | |
89fc3421 CC |
1266 | } |
1267 | ||
dde3f402 ILT |
1268 | // Get symbols. Not used for plugin objects. |
1269 | ||
1270 | template<int size, bool big_endian> | |
1271 | const Object::Symbols* | |
1272 | Sized_pluginobj<size, big_endian>::do_get_global_symbols() const | |
1273 | { | |
1274 | gold_unreachable(); | |
1275 | } | |
1276 | ||
5995b570 | 1277 | // Class Plugin_finish. This task runs after all replacement files have |
78384e8f CC |
1278 | // been added. For now, it's a placeholder for a possible plugin API |
1279 | // to allow the plugin to release most of its resources. The cleanup | |
1280 | // handlers must be called later, because they can remove the temporary | |
1281 | // object files that are needed until the end of the link. | |
89fc3421 | 1282 | |
5995b570 | 1283 | class Plugin_finish : public Task |
89fc3421 CC |
1284 | { |
1285 | public: | |
5995b570 | 1286 | Plugin_finish(Task_token* this_blocker, Task_token* next_blocker) |
89fc3421 CC |
1287 | : this_blocker_(this_blocker), next_blocker_(next_blocker) |
1288 | { } | |
1289 | ||
5995b570 | 1290 | ~Plugin_finish() |
89fc3421 CC |
1291 | { |
1292 | if (this->this_blocker_ != NULL) | |
1293 | delete this->this_blocker_; | |
1294 | } | |
1295 | ||
1296 | Task_token* | |
1297 | is_runnable() | |
1298 | { | |
1299 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1300 | return this->this_blocker_; | |
1301 | return NULL; | |
1302 | } | |
1303 | ||
1304 | void | |
1305 | locks(Task_locker* tl) | |
1306 | { tl->add(this, this->next_blocker_); } | |
1307 | ||
1308 | void | |
1309 | run(Workqueue*) | |
483620e8 | 1310 | { |
78384e8f | 1311 | // We could call early cleanup handlers here. |
483620e8 | 1312 | } |
89fc3421 CC |
1313 | |
1314 | std::string | |
1315 | get_name() const | |
5995b570 | 1316 | { return "Plugin_finish"; } |
89fc3421 CC |
1317 | |
1318 | private: | |
1319 | Task_token* this_blocker_; | |
1320 | Task_token* next_blocker_; | |
1321 | }; | |
1322 | ||
1323 | // Class Plugin_hook. | |
1324 | ||
1325 | Plugin_hook::~Plugin_hook() | |
1326 | { | |
1327 | } | |
1328 | ||
1329 | // Return whether a Plugin_hook task is runnable. | |
1330 | ||
1331 | Task_token* | |
1332 | Plugin_hook::is_runnable() | |
1333 | { | |
1334 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1335 | return this->this_blocker_; | |
1336 | return NULL; | |
1337 | } | |
1338 | ||
1339 | // Return a Task_locker for a Plugin_hook task. We don't need any | |
1340 | // locks here. | |
1341 | ||
1342 | void | |
1343 | Plugin_hook::locks(Task_locker*) | |
1344 | { | |
1345 | } | |
1346 | ||
89fc3421 CC |
1347 | // Run the "all symbols read" plugin hook. |
1348 | ||
1349 | void | |
5995b570 | 1350 | Plugin_hook::run(Workqueue* workqueue) |
89fc3421 CC |
1351 | { |
1352 | gold_assert(this->options_.has_plugins()); | |
a10ae760 | 1353 | Symbol* start_sym = this->symtab_->lookup(parameters->entry()); |
91ff43fe RÁE |
1354 | if (start_sym != NULL) |
1355 | start_sym->set_in_real_elf(); | |
1356 | ||
89fc3421 | 1357 | this->options_.plugins()->all_symbols_read(workqueue, |
0f7c0701 | 1358 | this, |
89fc3421 CC |
1359 | this->input_objects_, |
1360 | this->symtab_, | |
89fc3421 CC |
1361 | this->dirpath_, |
1362 | this->mapfile_, | |
1363 | &this->this_blocker_); | |
5995b570 CC |
1364 | workqueue->queue_soon(new Plugin_finish(this->this_blocker_, |
1365 | this->next_blocker_)); | |
89fc3421 CC |
1366 | } |
1367 | ||
1368 | // The C interface routines called by the plugins. | |
1369 | ||
1370 | #ifdef ENABLE_PLUGINS | |
1371 | ||
1372 | // Register a claim-file handler. | |
1373 | ||
1374 | static enum ld_plugin_status | |
1375 | register_claim_file(ld_plugin_claim_file_handler handler) | |
1376 | { | |
1377 | gold_assert(parameters->options().has_plugins()); | |
1378 | parameters->options().plugins()->set_claim_file_handler(handler); | |
1379 | return LDPS_OK; | |
1380 | } | |
1381 | ||
1382 | // Register an all-symbols-read handler. | |
1383 | ||
1384 | static enum ld_plugin_status | |
1385 | register_all_symbols_read(ld_plugin_all_symbols_read_handler handler) | |
1386 | { | |
1387 | gold_assert(parameters->options().has_plugins()); | |
1388 | parameters->options().plugins()->set_all_symbols_read_handler(handler); | |
1389 | return LDPS_OK; | |
1390 | } | |
1391 | ||
1392 | // Register a cleanup handler. | |
1393 | ||
1394 | static enum ld_plugin_status | |
1395 | register_cleanup(ld_plugin_cleanup_handler handler) | |
1396 | { | |
1397 | gold_assert(parameters->options().has_plugins()); | |
1398 | parameters->options().plugins()->set_cleanup_handler(handler); | |
1399 | return LDPS_OK; | |
1400 | } | |
1401 | ||
1402 | // Add symbols from a plugin-claimed input file. | |
1403 | ||
1404 | static enum ld_plugin_status | |
ca09d69a | 1405 | add_symbols(void* handle, int nsyms, const ld_plugin_symbol* syms) |
89fc3421 CC |
1406 | { |
1407 | gold_assert(parameters->options().has_plugins()); | |
1408 | Pluginobj* obj = parameters->options().plugins()->make_plugin_object( | |
1409 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1410 | if (obj == NULL) | |
1411 | return LDPS_ERR; | |
1412 | obj->store_incoming_symbols(nsyms, syms); | |
1413 | return LDPS_OK; | |
1414 | } | |
1415 | ||
0f7c0701 CC |
1416 | // Get the input file information with an open (possibly re-opened) |
1417 | // file descriptor. | |
1418 | ||
1419 | static enum ld_plugin_status | |
ca09d69a | 1420 | get_input_file(const void* handle, struct ld_plugin_input_file* file) |
0f7c0701 CC |
1421 | { |
1422 | gold_assert(parameters->options().has_plugins()); | |
1423 | unsigned int obj_index = | |
1424 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1425 | return parameters->options().plugins()->get_input_file(obj_index, file); | |
1426 | } | |
1427 | ||
1428 | // Release the input file. | |
1429 | ||
1430 | static enum ld_plugin_status | |
ca09d69a | 1431 | release_input_file(const void* handle) |
0f7c0701 CC |
1432 | { |
1433 | gold_assert(parameters->options().has_plugins()); | |
1434 | unsigned int obj_index = | |
1435 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1436 | return parameters->options().plugins()->release_input_file(obj_index); | |
1437 | } | |
1438 | ||
9c793f14 RÁE |
1439 | static enum ld_plugin_status |
1440 | get_view(const void *handle, const void **viewp) | |
1441 | { | |
1442 | gold_assert(parameters->options().has_plugins()); | |
1443 | unsigned int obj_index = | |
1444 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1445 | return parameters->options().plugins()->get_view(obj_index, viewp); | |
1446 | } | |
1447 | ||
89fc3421 CC |
1448 | // Get the symbol resolution info for a plugin-claimed input file. |
1449 | ||
1450 | static enum ld_plugin_status | |
ca09d69a | 1451 | get_symbols(const void* handle, int nsyms, ld_plugin_symbol* syms) |
89fc3421 CC |
1452 | { |
1453 | gold_assert(parameters->options().has_plugins()); | |
e9552f7e ST |
1454 | Object* obj = parameters->options().plugins()->object( |
1455 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
89fc3421 CC |
1456 | if (obj == NULL) |
1457 | return LDPS_ERR; | |
e9552f7e ST |
1458 | Pluginobj* plugin_obj = obj->pluginobj(); |
1459 | if (plugin_obj == NULL) | |
1460 | return LDPS_ERR; | |
235061c2 CC |
1461 | return plugin_obj->get_symbol_resolution_info(nsyms, syms, 1); |
1462 | } | |
1463 | ||
1464 | // Version 2 of the above. The only difference is that this version | |
1465 | // is allowed to return the resolution code LDPR_PREVAILING_DEF_IRONLY_EXP. | |
1466 | ||
1467 | static enum ld_plugin_status | |
1468 | get_symbols_v2(const void* handle, int nsyms, ld_plugin_symbol* syms) | |
1469 | { | |
1470 | gold_assert(parameters->options().has_plugins()); | |
1471 | Object* obj = parameters->options().plugins()->object( | |
1472 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1473 | if (obj == NULL) | |
1474 | return LDPS_ERR; | |
1475 | Pluginobj* plugin_obj = obj->pluginobj(); | |
1476 | if (plugin_obj == NULL) | |
1477 | return LDPS_ERR; | |
1478 | return plugin_obj->get_symbol_resolution_info(nsyms, syms, 2); | |
89fc3421 CC |
1479 | } |
1480 | ||
1481 | // Add a new (real) input file generated by a plugin. | |
1482 | ||
1483 | static enum ld_plugin_status | |
ca09d69a | 1484 | add_input_file(const char* pathname) |
89fc3421 CC |
1485 | { |
1486 | gold_assert(parameters->options().has_plugins()); | |
e99daf92 ILT |
1487 | return parameters->options().plugins()->add_input_file(pathname, false); |
1488 | } | |
1489 | ||
1490 | // Add a new (real) library required by a plugin. | |
1491 | ||
1492 | static enum ld_plugin_status | |
ca09d69a | 1493 | add_input_library(const char* pathname) |
e99daf92 ILT |
1494 | { |
1495 | gold_assert(parameters->options().has_plugins()); | |
1496 | return parameters->options().plugins()->add_input_file(pathname, true); | |
89fc3421 CC |
1497 | } |
1498 | ||
42218b9f RÁE |
1499 | // Set the extra library path to be used by libraries added via |
1500 | // add_input_library | |
1501 | ||
1502 | static enum ld_plugin_status | |
ca09d69a | 1503 | set_extra_library_path(const char* path) |
42218b9f RÁE |
1504 | { |
1505 | gold_assert(parameters->options().has_plugins()); | |
1506 | return parameters->options().plugins()->set_extra_library_path(path); | |
1507 | } | |
1508 | ||
89fc3421 CC |
1509 | // Issue a diagnostic message from a plugin. |
1510 | ||
1511 | static enum ld_plugin_status | |
ca09d69a | 1512 | message(int level, const char* format, ...) |
89fc3421 CC |
1513 | { |
1514 | va_list args; | |
1515 | va_start(args, format); | |
1516 | ||
1517 | switch (level) | |
1518 | { | |
1519 | case LDPL_INFO: | |
1520 | parameters->errors()->info(format, args); | |
1521 | break; | |
1522 | case LDPL_WARNING: | |
1523 | parameters->errors()->warning(format, args); | |
1524 | break; | |
1525 | case LDPL_ERROR: | |
1526 | default: | |
1527 | parameters->errors()->error(format, args); | |
1528 | break; | |
1529 | case LDPL_FATAL: | |
1530 | parameters->errors()->fatal(format, args); | |
1531 | break; | |
1532 | } | |
1533 | ||
1534 | va_end(args); | |
1535 | return LDPS_OK; | |
1536 | } | |
1537 | ||
e9552f7e ST |
1538 | // Get the section count of the object corresponding to the handle. This |
1539 | // plugin interface can only be called in the claim_file handler of the plugin. | |
1540 | ||
1541 | static enum ld_plugin_status | |
1542 | get_input_section_count(const void* handle, unsigned int* count) | |
1543 | { | |
1544 | gold_assert(parameters->options().has_plugins()); | |
1545 | ||
1546 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1547 | return LDPS_ERR; | |
1548 | ||
1549 | Object* obj = parameters->options().plugins()->get_elf_object(handle); | |
1550 | ||
1551 | if (obj == NULL) | |
1552 | return LDPS_ERR; | |
1553 | ||
1554 | *count = obj->shnum(); | |
1555 | return LDPS_OK; | |
1556 | } | |
1557 | ||
1558 | // Get the type of the specified section in the object corresponding | |
1559 | // to the handle. This plugin interface can only be called in the | |
1560 | // claim_file handler of the plugin. | |
1561 | ||
1562 | static enum ld_plugin_status | |
1563 | get_input_section_type(const struct ld_plugin_section section, | |
1564 | unsigned int* type) | |
1565 | { | |
1566 | gold_assert(parameters->options().has_plugins()); | |
1567 | ||
1568 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1569 | return LDPS_ERR; | |
1570 | ||
1571 | Object* obj | |
1572 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1573 | ||
1574 | if (obj == NULL) | |
1575 | return LDPS_BAD_HANDLE; | |
1576 | ||
1577 | *type = obj->section_type(section.shndx); | |
1578 | return LDPS_OK; | |
1579 | } | |
1580 | ||
1581 | // Get the name of the specified section in the object corresponding | |
1582 | // to the handle. This plugin interface can only be called in the | |
1583 | // claim_file handler of the plugin. | |
1584 | ||
1585 | static enum ld_plugin_status | |
1586 | get_input_section_name(const struct ld_plugin_section section, | |
1587 | char** section_name_ptr) | |
1588 | { | |
1589 | gold_assert(parameters->options().has_plugins()); | |
1590 | ||
1591 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1592 | return LDPS_ERR; | |
1593 | ||
1594 | Object* obj | |
1595 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1596 | ||
1597 | if (obj == NULL) | |
1598 | return LDPS_BAD_HANDLE; | |
1599 | ||
1600 | // Check if the object is locked before getting the section name. | |
1601 | gold_assert(obj->is_locked()); | |
1602 | ||
1603 | const std::string section_name = obj->section_name(section.shndx); | |
1604 | *section_name_ptr = static_cast<char*>(malloc(section_name.length() + 1)); | |
1605 | memcpy(*section_name_ptr, section_name.c_str(), section_name.length() + 1); | |
1606 | return LDPS_OK; | |
1607 | } | |
1608 | ||
1609 | // Get the contents of the specified section in the object corresponding | |
1610 | // to the handle. This plugin interface can only be called in the | |
1611 | // claim_file handler of the plugin. | |
1612 | ||
1613 | static enum ld_plugin_status | |
1614 | get_input_section_contents(const struct ld_plugin_section section, | |
1615 | const unsigned char** section_contents_ptr, | |
1616 | size_t* len) | |
1617 | { | |
1618 | gold_assert(parameters->options().has_plugins()); | |
1619 | ||
1620 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1621 | return LDPS_ERR; | |
1622 | ||
1623 | Object* obj | |
1624 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1625 | ||
1626 | if (obj == NULL) | |
1627 | return LDPS_BAD_HANDLE; | |
1628 | ||
1629 | // Check if the object is locked before getting the section contents. | |
1630 | gold_assert(obj->is_locked()); | |
1631 | ||
1632 | section_size_type plen; | |
1633 | *section_contents_ptr | |
1634 | = obj->section_contents(section.shndx, &plen, false); | |
1635 | *len = plen; | |
1636 | return LDPS_OK; | |
1637 | } | |
1638 | ||
1639 | // Specify the ordering of sections in the final layout. The sections are | |
1640 | // specified as (handle,shndx) pairs in the two arrays in the order in | |
1641 | // which they should appear in the final layout. | |
1642 | ||
1643 | static enum ld_plugin_status | |
f0558624 | 1644 | update_section_order(const struct ld_plugin_section* section_list, |
e9552f7e ST |
1645 | unsigned int num_sections) |
1646 | { | |
1647 | gold_assert(parameters->options().has_plugins()); | |
1648 | ||
1649 | if (num_sections == 0) | |
1650 | return LDPS_OK; | |
1651 | ||
1652 | if (section_list == NULL) | |
1653 | return LDPS_ERR; | |
1654 | ||
f0558624 ST |
1655 | Layout* layout = parameters->options().plugins()->layout(); |
1656 | gold_assert (layout != NULL); | |
e9552f7e | 1657 | |
f0558624 ST |
1658 | std::map<Section_id, unsigned int>* order_map |
1659 | = layout->get_section_order_map(); | |
1660 | ||
1661 | /* Store the mapping from Section_id to section position in layout's | |
1662 | order_map to consult after output sections are added. */ | |
e9552f7e ST |
1663 | for (unsigned int i = 0; i < num_sections; ++i) |
1664 | { | |
1665 | Object* obj = parameters->options().plugins()->get_elf_object( | |
1666 | section_list[i].handle); | |
1667 | if (obj == NULL) | |
1668 | return LDPS_BAD_HANDLE; | |
1669 | unsigned int shndx = section_list[i].shndx; | |
1670 | Section_id secn_id(obj, shndx); | |
f0558624 | 1671 | (*order_map)[secn_id] = i + 1; |
e9552f7e ST |
1672 | } |
1673 | ||
e9552f7e ST |
1674 | return LDPS_OK; |
1675 | } | |
1676 | ||
1677 | // Let the linker know that the sections could be reordered. | |
1678 | ||
1679 | static enum ld_plugin_status | |
1680 | allow_section_ordering() | |
1681 | { | |
1682 | gold_assert(parameters->options().has_plugins()); | |
1683 | Layout* layout = parameters->options().plugins()->layout(); | |
1684 | layout->set_section_ordering_specified(); | |
1685 | return LDPS_OK; | |
1686 | } | |
1687 | ||
89fc3421 CC |
1688 | #endif // ENABLE_PLUGINS |
1689 | ||
1690 | // Allocate a Pluginobj object of the appropriate size and endianness. | |
1691 | ||
1692 | static Pluginobj* | |
0f7c0701 | 1693 | make_sized_plugin_object(Input_file* input_file, off_t offset, off_t filesize) |
89fc3421 | 1694 | { |
89fc3421 CC |
1695 | Pluginobj* obj = NULL; |
1696 | ||
029ba973 ILT |
1697 | parameters_force_valid_target(); |
1698 | const Target& target(parameters->target()); | |
89fc3421 | 1699 | |
029ba973 | 1700 | if (target.get_size() == 32) |
89fc3421 | 1701 | { |
029ba973 | 1702 | if (target.is_big_endian()) |
92f03fcb | 1703 | #ifdef HAVE_TARGET_32_BIG |
89fc3421 | 1704 | obj = new Sized_pluginobj<32, true>(input_file->filename(), |
0f7c0701 | 1705 | input_file, offset, filesize); |
92f03fcb CC |
1706 | #else |
1707 | gold_error(_("%s: not configured to support " | |
1708 | "32-bit big-endian object"), | |
1709 | input_file->filename().c_str()); | |
89fc3421 | 1710 | #endif |
89fc3421 | 1711 | else |
92f03fcb | 1712 | #ifdef HAVE_TARGET_32_LITTLE |
89fc3421 | 1713 | obj = new Sized_pluginobj<32, false>(input_file->filename(), |
0f7c0701 | 1714 | input_file, offset, filesize); |
92f03fcb CC |
1715 | #else |
1716 | gold_error(_("%s: not configured to support " | |
1717 | "32-bit little-endian object"), | |
1718 | input_file->filename().c_str()); | |
89fc3421 CC |
1719 | #endif |
1720 | } | |
029ba973 | 1721 | else if (target.get_size() == 64) |
89fc3421 | 1722 | { |
029ba973 | 1723 | if (target.is_big_endian()) |
92f03fcb | 1724 | #ifdef HAVE_TARGET_64_BIG |
89fc3421 | 1725 | obj = new Sized_pluginobj<64, true>(input_file->filename(), |
0f7c0701 | 1726 | input_file, offset, filesize); |
92f03fcb CC |
1727 | #else |
1728 | gold_error(_("%s: not configured to support " | |
1729 | "64-bit big-endian object"), | |
1730 | input_file->filename().c_str()); | |
89fc3421 | 1731 | #endif |
89fc3421 | 1732 | else |
92f03fcb | 1733 | #ifdef HAVE_TARGET_64_LITTLE |
89fc3421 | 1734 | obj = new Sized_pluginobj<64, false>(input_file->filename(), |
0f7c0701 | 1735 | input_file, offset, filesize); |
92f03fcb CC |
1736 | #else |
1737 | gold_error(_("%s: not configured to support " | |
1738 | "64-bit little-endian object"), | |
1739 | input_file->filename().c_str()); | |
89fc3421 CC |
1740 | #endif |
1741 | } | |
1742 | ||
1743 | gold_assert(obj != NULL); | |
89fc3421 CC |
1744 | return obj; |
1745 | } | |
1746 | ||
1747 | } // End namespace gold. |