Commit | Line | Data |
---|---|---|
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 | ||
16164a6b ST |
118 | static enum ld_plugin_status |
119 | allow_unique_segment_for_sections(); | |
120 | ||
121 | static enum ld_plugin_status | |
122 | unique_segment_for_sections(const char* segment_name, | |
123 | uint64_t flags, | |
124 | uint64_t align, | |
125 | const struct ld_plugin_section *section_list, | |
126 | unsigned int num_sections); | |
89fc3421 CC |
127 | }; |
128 | ||
129 | #endif // ENABLE_PLUGINS | |
130 | ||
131 | static Pluginobj* make_sized_plugin_object(Input_file* input_file, | |
0f7c0701 | 132 | off_t offset, off_t filesize); |
89fc3421 CC |
133 | |
134 | // Plugin methods. | |
135 | ||
136 | // Load one plugin library. | |
137 | ||
138 | void | |
139 | Plugin::load() | |
140 | { | |
141 | #ifdef ENABLE_PLUGINS | |
89fc3421 CC |
142 | // Load the plugin library. |
143 | // FIXME: Look for the library in standard locations. | |
4674ecfc | 144 | this->handle_ = dlopen(this->filename_.c_str(), RTLD_NOW); |
89fc3421 CC |
145 | if (this->handle_ == NULL) |
146 | { | |
4802450a RÁE |
147 | gold_error(_("%s: could not load plugin library: %s"), |
148 | this->filename_.c_str(), dlerror()); | |
89fc3421 CC |
149 | return; |
150 | } | |
151 | ||
152 | // Find the plugin's onload entry point. | |
b59befec ILT |
153 | void* ptr = dlsym(this->handle_, "onload"); |
154 | if (ptr == NULL) | |
89fc3421 | 155 | { |
4674ecfc CC |
156 | gold_error(_("%s: could not find onload entry point"), |
157 | this->filename_.c_str()); | |
89fc3421 CC |
158 | return; |
159 | } | |
b59befec ILT |
160 | ld_plugin_onload onload; |
161 | gold_assert(sizeof(onload) == sizeof(ptr)); | |
162 | memcpy(&onload, &ptr, sizeof(ptr)); | |
89fc3421 CC |
163 | |
164 | // Get the linker's version number. | |
165 | const char* ver = get_version_string(); | |
166 | int major = 0; | |
167 | int minor = 0; | |
168 | sscanf(ver, "%d.%d", &major, &minor); | |
169 | ||
170 | // Allocate and populate a transfer vector. | |
16164a6b | 171 | const int tv_fixed_size = 26; |
e9552f7e | 172 | |
4674ecfc | 173 | int tv_size = this->args_.size() + tv_fixed_size; |
ca09d69a | 174 | ld_plugin_tv* tv = new ld_plugin_tv[tv_size]; |
89fc3421 | 175 | |
abc8dcba CC |
176 | // Put LDPT_MESSAGE at the front of the list so the plugin can use it |
177 | // while processing subsequent entries. | |
89fc3421 | 178 | int i = 0; |
abc8dcba CC |
179 | tv[i].tv_tag = LDPT_MESSAGE; |
180 | tv[i].tv_u.tv_message = message; | |
181 | ||
182 | ++i; | |
89fc3421 CC |
183 | tv[i].tv_tag = LDPT_API_VERSION; |
184 | tv[i].tv_u.tv_val = LD_PLUGIN_API_VERSION; | |
185 | ||
186 | ++i; | |
187 | tv[i].tv_tag = LDPT_GOLD_VERSION; | |
188 | tv[i].tv_u.tv_val = major * 100 + minor; | |
189 | ||
190 | ++i; | |
191 | tv[i].tv_tag = LDPT_LINKER_OUTPUT; | |
192 | if (parameters->options().relocatable()) | |
193 | tv[i].tv_u.tv_val = LDPO_REL; | |
194 | else if (parameters->options().shared()) | |
195 | tv[i].tv_u.tv_val = LDPO_DYN; | |
370e30b6 RÁE |
196 | else if (parameters->options().pie()) |
197 | tv[i].tv_u.tv_val = LDPO_PIE; | |
89fc3421 CC |
198 | else |
199 | tv[i].tv_u.tv_val = LDPO_EXEC; | |
200 | ||
3537c84b RÁE |
201 | ++i; |
202 | tv[i].tv_tag = LDPT_OUTPUT_NAME; | |
203 | tv[i].tv_u.tv_string = parameters->options().output(); | |
204 | ||
4674ecfc | 205 | for (unsigned int j = 0; j < this->args_.size(); ++j) |
89fc3421 CC |
206 | { |
207 | ++i; | |
208 | tv[i].tv_tag = LDPT_OPTION; | |
4674ecfc | 209 | tv[i].tv_u.tv_string = this->args_[j].c_str(); |
89fc3421 CC |
210 | } |
211 | ||
212 | ++i; | |
213 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
214 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
215 | ||
216 | ++i; | |
217 | tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK; | |
218 | tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read; | |
219 | ||
220 | ++i; | |
221 | tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK; | |
222 | tv[i].tv_u.tv_register_cleanup = register_cleanup; | |
223 | ||
224 | ++i; | |
225 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
226 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
227 | ||
0f7c0701 CC |
228 | ++i; |
229 | tv[i].tv_tag = LDPT_GET_INPUT_FILE; | |
230 | tv[i].tv_u.tv_get_input_file = get_input_file; | |
231 | ||
9c793f14 RÁE |
232 | ++i; |
233 | tv[i].tv_tag = LDPT_GET_VIEW; | |
234 | tv[i].tv_u.tv_get_view = get_view; | |
235 | ||
0f7c0701 CC |
236 | ++i; |
237 | tv[i].tv_tag = LDPT_RELEASE_INPUT_FILE; | |
238 | tv[i].tv_u.tv_release_input_file = release_input_file; | |
239 | ||
89fc3421 CC |
240 | ++i; |
241 | tv[i].tv_tag = LDPT_GET_SYMBOLS; | |
242 | tv[i].tv_u.tv_get_symbols = get_symbols; | |
243 | ||
235061c2 CC |
244 | ++i; |
245 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V2; | |
246 | tv[i].tv_u.tv_get_symbols = get_symbols_v2; | |
247 | ||
89fc3421 CC |
248 | ++i; |
249 | tv[i].tv_tag = LDPT_ADD_INPUT_FILE; | |
250 | tv[i].tv_u.tv_add_input_file = add_input_file; | |
251 | ||
e99daf92 ILT |
252 | ++i; |
253 | tv[i].tv_tag = LDPT_ADD_INPUT_LIBRARY; | |
254 | tv[i].tv_u.tv_add_input_library = add_input_library; | |
255 | ||
42218b9f RÁE |
256 | ++i; |
257 | tv[i].tv_tag = LDPT_SET_EXTRA_LIBRARY_PATH; | |
258 | tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path; | |
259 | ||
e9552f7e ST |
260 | ++i; |
261 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_COUNT; | |
262 | tv[i].tv_u.tv_get_input_section_count = get_input_section_count; | |
263 | ||
264 | ++i; | |
265 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_TYPE; | |
266 | tv[i].tv_u.tv_get_input_section_type = get_input_section_type; | |
267 | ||
268 | ++i; | |
269 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_NAME; | |
270 | tv[i].tv_u.tv_get_input_section_name = get_input_section_name; | |
271 | ||
272 | ++i; | |
273 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_CONTENTS; | |
274 | tv[i].tv_u.tv_get_input_section_contents = get_input_section_contents; | |
275 | ||
276 | ++i; | |
277 | tv[i].tv_tag = LDPT_UPDATE_SECTION_ORDER; | |
278 | tv[i].tv_u.tv_update_section_order = update_section_order; | |
279 | ||
280 | ++i; | |
281 | tv[i].tv_tag = LDPT_ALLOW_SECTION_ORDERING; | |
282 | tv[i].tv_u.tv_allow_section_ordering = allow_section_ordering; | |
283 | ||
16164a6b ST |
284 | ++i; |
285 | tv[i].tv_tag = LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS; | |
286 | tv[i].tv_u.tv_allow_unique_segment_for_sections | |
287 | = allow_unique_segment_for_sections; | |
288 | ||
289 | ++i; | |
290 | tv[i].tv_tag = LDPT_UNIQUE_SEGMENT_FOR_SECTIONS; | |
291 | tv[i].tv_u.tv_unique_segment_for_sections = unique_segment_for_sections; | |
292 | ||
89fc3421 CC |
293 | ++i; |
294 | tv[i].tv_tag = LDPT_NULL; | |
295 | tv[i].tv_u.tv_val = 0; | |
296 | ||
297 | gold_assert(i == tv_size - 1); | |
298 | ||
299 | // Call the onload entry point. | |
300 | (*onload)(tv); | |
301 | ||
6c52134c | 302 | delete[] tv; |
89fc3421 CC |
303 | #endif // ENABLE_PLUGINS |
304 | } | |
305 | ||
306 | // Call the plugin claim-file handler. | |
307 | ||
308 | inline bool | |
ca09d69a | 309 | Plugin::claim_file(struct ld_plugin_input_file* plugin_input_file) |
89fc3421 CC |
310 | { |
311 | int claimed = 0; | |
312 | ||
313 | if (this->claim_file_handler_ != NULL) | |
314 | { | |
315 | (*this->claim_file_handler_)(plugin_input_file, &claimed); | |
316 | if (claimed) | |
317 | return true; | |
318 | } | |
319 | return false; | |
320 | } | |
321 | ||
322 | // Call the all-symbols-read handler. | |
323 | ||
324 | inline void | |
325 | Plugin::all_symbols_read() | |
326 | { | |
327 | if (this->all_symbols_read_handler_ != NULL) | |
328 | (*this->all_symbols_read_handler_)(); | |
329 | } | |
330 | ||
331 | // Call the cleanup handler. | |
332 | ||
333 | inline void | |
334 | Plugin::cleanup() | |
335 | { | |
40f36857 CC |
336 | if (this->cleanup_handler_ != NULL && !this->cleanup_done_) |
337 | { | |
338 | // Set this flag before calling to prevent a recursive plunge | |
339 | // in the event that a plugin's cleanup handler issues a | |
340 | // fatal error. | |
341 | this->cleanup_done_ = true; | |
342 | (*this->cleanup_handler_)(); | |
343 | } | |
89fc3421 CC |
344 | } |
345 | ||
0f3b89d8 ILT |
346 | // This task is used to rescan archives as needed. |
347 | ||
348 | class Plugin_rescan : public Task | |
349 | { | |
350 | public: | |
351 | Plugin_rescan(Task_token* this_blocker, Task_token* next_blocker) | |
352 | : this_blocker_(this_blocker), next_blocker_(next_blocker) | |
353 | { } | |
354 | ||
355 | ~Plugin_rescan() | |
356 | { | |
357 | delete this->this_blocker_; | |
358 | } | |
359 | ||
360 | Task_token* | |
361 | is_runnable() | |
362 | { | |
363 | if (this->this_blocker_->is_blocked()) | |
364 | return this->this_blocker_; | |
365 | return NULL; | |
366 | } | |
367 | ||
368 | void | |
369 | locks(Task_locker* tl) | |
370 | { tl->add(this, this->next_blocker_); } | |
371 | ||
372 | void | |
373 | run(Workqueue*) | |
374 | { parameters->options().plugins()->rescan(this); } | |
375 | ||
376 | std::string | |
377 | get_name() const | |
378 | { return "Plugin_rescan"; } | |
379 | ||
380 | private: | |
381 | Task_token* this_blocker_; | |
382 | Task_token* next_blocker_; | |
383 | }; | |
384 | ||
89fc3421 CC |
385 | // Plugin_manager methods. |
386 | ||
387 | Plugin_manager::~Plugin_manager() | |
388 | { | |
389 | for (Plugin_list::iterator p = this->plugins_.begin(); | |
390 | p != this->plugins_.end(); | |
391 | ++p) | |
392 | delete *p; | |
393 | this->plugins_.clear(); | |
394 | for (Object_list::iterator obj = this->objects_.begin(); | |
395 | obj != this->objects_.end(); | |
396 | ++obj) | |
397 | delete *obj; | |
398 | this->objects_.clear(); | |
399 | } | |
400 | ||
401 | // Load all plugin libraries. | |
402 | ||
403 | void | |
e9552f7e | 404 | Plugin_manager::load_plugins(Layout* layout) |
89fc3421 | 405 | { |
e9552f7e | 406 | this->layout_ = layout; |
89fc3421 CC |
407 | for (this->current_ = this->plugins_.begin(); |
408 | this->current_ != this->plugins_.end(); | |
409 | ++this->current_) | |
410 | (*this->current_)->load(); | |
411 | } | |
412 | ||
413 | // Call the plugin claim-file handlers in turn to see if any claim the file. | |
414 | ||
415 | Pluginobj* | |
416 | Plugin_manager::claim_file(Input_file* input_file, off_t offset, | |
e9552f7e | 417 | off_t filesize, Object* elf_object) |
89fc3421 CC |
418 | { |
419 | if (this->in_replacement_phase_) | |
420 | return NULL; | |
421 | ||
422 | unsigned int handle = this->objects_.size(); | |
423 | this->input_file_ = input_file; | |
424 | this->plugin_input_file_.name = input_file->filename().c_str(); | |
425 | this->plugin_input_file_.fd = input_file->file().descriptor(); | |
426 | this->plugin_input_file_.offset = offset; | |
427 | this->plugin_input_file_.filesize = filesize; | |
428 | this->plugin_input_file_.handle = reinterpret_cast<void*>(handle); | |
e9552f7e ST |
429 | if (elf_object != NULL) |
430 | this->objects_.push_back(elf_object); | |
431 | this->in_claim_file_handler_ = true; | |
89fc3421 CC |
432 | |
433 | for (this->current_ = this->plugins_.begin(); | |
434 | this->current_ != this->plugins_.end(); | |
435 | ++this->current_) | |
436 | { | |
437 | if ((*this->current_)->claim_file(&this->plugin_input_file_)) | |
438 | { | |
0f3b89d8 | 439 | this->any_claimed_ = true; |
e9552f7e | 440 | this->in_claim_file_handler_ = false; |
0f3b89d8 | 441 | |
e9552f7e ST |
442 | if (this->objects_.size() > handle |
443 | && this->objects_[handle]->pluginobj() != NULL) | |
444 | return this->objects_[handle]->pluginobj(); | |
abc8dcba CC |
445 | |
446 | // If the plugin claimed the file but did not call the | |
447 | // add_symbols callback, we need to create the Pluginobj now. | |
448 | Pluginobj* obj = this->make_plugin_object(handle); | |
449 | return obj; | |
89fc3421 CC |
450 | } |
451 | } | |
452 | ||
e9552f7e | 453 | this->in_claim_file_handler_ = false; |
89fc3421 CC |
454 | return NULL; |
455 | } | |
456 | ||
0f3b89d8 ILT |
457 | // Save an archive. This is used so that a plugin can add a file |
458 | // which refers to a symbol which was not previously referenced. In | |
459 | // that case we want to pretend that the symbol was referenced before, | |
460 | // and pull in the archive object. | |
461 | ||
462 | void | |
463 | Plugin_manager::save_archive(Archive* archive) | |
464 | { | |
465 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
466 | delete archive; | |
467 | else | |
468 | this->rescannable_.push_back(Rescannable(archive)); | |
469 | } | |
470 | ||
471 | // Save an Input_group. This is like save_archive. | |
472 | ||
473 | void | |
474 | Plugin_manager::save_input_group(Input_group* input_group) | |
475 | { | |
476 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
477 | delete input_group; | |
478 | else | |
479 | this->rescannable_.push_back(Rescannable(input_group)); | |
480 | } | |
481 | ||
89fc3421 CC |
482 | // Call the all-symbols-read handlers. |
483 | ||
484 | void | |
0f7c0701 | 485 | Plugin_manager::all_symbols_read(Workqueue* workqueue, Task* task, |
89fc3421 | 486 | Input_objects* input_objects, |
e9552f7e | 487 | Symbol_table* symtab, |
89fc3421 CC |
488 | Dirsearch* dirpath, Mapfile* mapfile, |
489 | Task_token** last_blocker) | |
490 | { | |
491 | this->in_replacement_phase_ = true; | |
492 | this->workqueue_ = workqueue; | |
0f7c0701 | 493 | this->task_ = task; |
89fc3421 CC |
494 | this->input_objects_ = input_objects; |
495 | this->symtab_ = symtab; | |
89fc3421 CC |
496 | this->dirpath_ = dirpath; |
497 | this->mapfile_ = mapfile; | |
498 | this->this_blocker_ = NULL; | |
499 | ||
500 | for (this->current_ = this->plugins_.begin(); | |
501 | this->current_ != this->plugins_.end(); | |
502 | ++this->current_) | |
503 | (*this->current_)->all_symbols_read(); | |
504 | ||
0f3b89d8 ILT |
505 | if (this->any_added_) |
506 | { | |
507 | Task_token* next_blocker = new Task_token(true); | |
508 | next_blocker->add_blocker(); | |
509 | workqueue->queue(new Plugin_rescan(this->this_blocker_, next_blocker)); | |
510 | this->this_blocker_ = next_blocker; | |
511 | } | |
512 | ||
89fc3421 CC |
513 | *last_blocker = this->this_blocker_; |
514 | } | |
515 | ||
0f3b89d8 ILT |
516 | // This is called when we see a new undefined symbol. If we are in |
517 | // the replacement phase, this means that we may need to rescan some | |
518 | // archives we have previously seen. | |
519 | ||
520 | void | |
521 | Plugin_manager::new_undefined_symbol(Symbol* sym) | |
522 | { | |
523 | if (this->in_replacement_phase_) | |
524 | this->undefined_symbols_.push_back(sym); | |
525 | } | |
526 | ||
527 | // Rescan archives as needed. This handles the case where a new | |
528 | // object file added by a plugin has an undefined reference to some | |
529 | // symbol defined in an archive. | |
530 | ||
531 | void | |
532 | Plugin_manager::rescan(Task* task) | |
533 | { | |
534 | size_t rescan_pos = 0; | |
535 | size_t rescan_size = this->rescannable_.size(); | |
536 | while (!this->undefined_symbols_.empty()) | |
537 | { | |
538 | if (rescan_pos >= rescan_size) | |
539 | { | |
540 | this->undefined_symbols_.clear(); | |
541 | return; | |
542 | } | |
543 | ||
544 | Undefined_symbol_list undefs; | |
545 | undefs.reserve(this->undefined_symbols_.size()); | |
546 | this->undefined_symbols_.swap(undefs); | |
547 | ||
548 | size_t min_rescan_pos = rescan_size; | |
549 | ||
550 | for (Undefined_symbol_list::const_iterator p = undefs.begin(); | |
551 | p != undefs.end(); | |
552 | ++p) | |
553 | { | |
554 | if (!(*p)->is_undefined()) | |
555 | continue; | |
556 | ||
557 | this->undefined_symbols_.push_back(*p); | |
558 | ||
559 | // Find the first rescan archive which defines this symbol, | |
560 | // starting at the current rescan position. The rescan position | |
561 | // exists so that given -la -lb -lc we don't look for undefined | |
562 | // symbols in -lb back in -la, but instead get the definition | |
563 | // from -lc. Don't bother to look past the current minimum | |
564 | // rescan position. | |
565 | for (size_t i = rescan_pos; i < min_rescan_pos; ++i) | |
566 | { | |
567 | if (this->rescannable_defines(i, *p)) | |
568 | { | |
569 | min_rescan_pos = i; | |
570 | break; | |
571 | } | |
572 | } | |
573 | } | |
574 | ||
575 | if (min_rescan_pos >= rescan_size) | |
576 | { | |
577 | // We didn't find any rescannable archives which define any | |
578 | // undefined symbols. | |
579 | return; | |
580 | } | |
581 | ||
582 | const Rescannable& r(this->rescannable_[min_rescan_pos]); | |
583 | if (r.is_archive) | |
584 | { | |
585 | Task_lock_obj<Archive> tl(task, r.u.archive); | |
586 | r.u.archive->add_symbols(this->symtab_, this->layout_, | |
587 | this->input_objects_, this->mapfile_); | |
588 | } | |
589 | else | |
590 | { | |
591 | size_t next_saw_undefined = this->symtab_->saw_undefined(); | |
592 | size_t saw_undefined; | |
593 | do | |
594 | { | |
595 | saw_undefined = next_saw_undefined; | |
596 | ||
597 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
598 | p != r.u.input_group->end(); | |
599 | ++p) | |
600 | { | |
601 | Task_lock_obj<Archive> tl(task, *p); | |
602 | ||
603 | (*p)->add_symbols(this->symtab_, this->layout_, | |
604 | this->input_objects_, this->mapfile_); | |
605 | } | |
606 | ||
607 | next_saw_undefined = this->symtab_->saw_undefined(); | |
608 | } | |
609 | while (saw_undefined != next_saw_undefined); | |
610 | } | |
611 | ||
612 | for (size_t i = rescan_pos; i < min_rescan_pos + 1; ++i) | |
613 | { | |
614 | if (this->rescannable_[i].is_archive) | |
615 | delete this->rescannable_[i].u.archive; | |
616 | else | |
617 | delete this->rescannable_[i].u.input_group; | |
618 | } | |
619 | ||
620 | rescan_pos = min_rescan_pos + 1; | |
621 | } | |
622 | } | |
623 | ||
624 | // Return whether the rescannable at index I defines SYM. | |
625 | ||
626 | bool | |
627 | Plugin_manager::rescannable_defines(size_t i, Symbol* sym) | |
628 | { | |
629 | const Rescannable& r(this->rescannable_[i]); | |
630 | if (r.is_archive) | |
631 | return r.u.archive->defines_symbol(sym); | |
632 | else | |
633 | { | |
634 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
635 | p != r.u.input_group->end(); | |
636 | ++p) | |
637 | { | |
638 | if ((*p)->defines_symbol(sym)) | |
639 | return true; | |
640 | } | |
641 | return false; | |
642 | } | |
643 | } | |
644 | ||
483620e8 | 645 | // Layout deferred objects. |
89fc3421 CC |
646 | |
647 | void | |
483620e8 | 648 | Plugin_manager::layout_deferred_objects() |
89fc3421 | 649 | { |
5995b570 CC |
650 | Deferred_layout_list::iterator obj; |
651 | ||
652 | for (obj = this->deferred_layout_objects_.begin(); | |
653 | obj != this->deferred_layout_objects_.end(); | |
654 | ++obj) | |
5f9bcf58 CC |
655 | { |
656 | // Lock the object so we can read from it. This is only called | |
657 | // single-threaded from queue_middle_tasks, so it is OK to lock. | |
658 | // Unfortunately we have no way to pass in a Task token. | |
659 | const Task* dummy_task = reinterpret_cast<const Task*>(-1); | |
660 | Task_lock_obj<Object> tl(dummy_task, *obj); | |
661 | (*obj)->layout_deferred_sections(this->layout_); | |
662 | } | |
483620e8 CC |
663 | } |
664 | ||
665 | // Call the cleanup handlers. | |
5995b570 | 666 | |
483620e8 CC |
667 | void |
668 | Plugin_manager::cleanup() | |
669 | { | |
89fc3421 CC |
670 | for (this->current_ = this->plugins_.begin(); |
671 | this->current_ != this->plugins_.end(); | |
672 | ++this->current_) | |
673 | (*this->current_)->cleanup(); | |
674 | } | |
675 | ||
676 | // Make a new Pluginobj object. This is called when the plugin calls | |
677 | // the add_symbols API. | |
678 | ||
679 | Pluginobj* | |
680 | Plugin_manager::make_plugin_object(unsigned int handle) | |
681 | { | |
682 | // Make sure we aren't asked to make an object for the same handle twice. | |
e9552f7e ST |
683 | if (this->objects_.size() != handle |
684 | && this->objects_[handle]->pluginobj() != NULL) | |
89fc3421 CC |
685 | return NULL; |
686 | ||
687 | Pluginobj* obj = make_sized_plugin_object(this->input_file_, | |
0f7c0701 CC |
688 | this->plugin_input_file_.offset, |
689 | this->plugin_input_file_.filesize); | |
e9552f7e ST |
690 | |
691 | ||
692 | // If the elf object for this file was pushed into the objects_ vector, delete | |
693 | // it to make room for the Pluginobj as this file is claimed. | |
694 | if (this->objects_.size() != handle) | |
695 | this->objects_.pop_back(); | |
696 | ||
89fc3421 CC |
697 | this->objects_.push_back(obj); |
698 | return obj; | |
699 | } | |
700 | ||
0f7c0701 CC |
701 | // Get the input file information with an open (possibly re-opened) |
702 | // file descriptor. | |
703 | ||
704 | ld_plugin_status | |
705 | Plugin_manager::get_input_file(unsigned int handle, | |
ca09d69a | 706 | struct ld_plugin_input_file* file) |
0f7c0701 | 707 | { |
e9552f7e | 708 | Pluginobj* obj = this->object(handle)->pluginobj(); |
0f7c0701 CC |
709 | if (obj == NULL) |
710 | return LDPS_BAD_HANDLE; | |
711 | ||
712 | obj->lock(this->task_); | |
713 | file->name = obj->filename().c_str(); | |
714 | file->fd = obj->descriptor(); | |
715 | file->offset = obj->offset(); | |
716 | file->filesize = obj->filesize(); | |
717 | file->handle = reinterpret_cast<void*>(handle); | |
718 | return LDPS_OK; | |
719 | } | |
720 | ||
721 | // Release the input file. | |
722 | ||
723 | ld_plugin_status | |
724 | Plugin_manager::release_input_file(unsigned int handle) | |
725 | { | |
e9552f7e ST |
726 | if (this->object(handle) == NULL) |
727 | return LDPS_BAD_HANDLE; | |
728 | ||
729 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
730 | ||
0f7c0701 CC |
731 | if (obj == NULL) |
732 | return LDPS_BAD_HANDLE; | |
733 | ||
734 | obj->unlock(this->task_); | |
735 | return LDPS_OK; | |
736 | } | |
737 | ||
e9552f7e ST |
738 | // Get the elf object corresponding to the handle. Return NULL if we |
739 | // found a Pluginobj instead. | |
740 | ||
741 | Object* | |
742 | Plugin_manager::get_elf_object(const void* handle) | |
743 | { | |
744 | Object* obj = this->object( | |
745 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
746 | ||
747 | // The object should not be a Pluginobj. | |
748 | if (obj == NULL | |
749 | || obj->pluginobj() != NULL) | |
750 | return NULL; | |
751 | ||
752 | return obj; | |
753 | } | |
754 | ||
9c793f14 RÁE |
755 | ld_plugin_status |
756 | Plugin_manager::get_view(unsigned int handle, const void **viewp) | |
757 | { | |
758 | off_t offset; | |
759 | size_t filesize; | |
760 | Input_file *input_file; | |
e9552f7e | 761 | if (this->in_claim_file_handler_) |
9c793f14 RÁE |
762 | { |
763 | // We are being called from the claim_file hook. | |
764 | const struct ld_plugin_input_file &f = this->plugin_input_file_; | |
765 | offset = f.offset; | |
766 | filesize = f.filesize; | |
767 | input_file = this->input_file_; | |
768 | } | |
769 | else | |
770 | { | |
771 | // An already claimed file. | |
e9552f7e ST |
772 | if (this->object(handle) == NULL) |
773 | return LDPS_BAD_HANDLE; | |
774 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
9c793f14 RÁE |
775 | if (obj == NULL) |
776 | return LDPS_BAD_HANDLE; | |
777 | offset = obj->offset(); | |
778 | filesize = obj->filesize(); | |
779 | input_file = obj->input_file(); | |
780 | } | |
781 | *viewp = (void*) input_file->file().get_view(offset, 0, filesize, false, | |
782 | false); | |
783 | return LDPS_OK; | |
784 | } | |
785 | ||
42218b9f RÁE |
786 | // Add a new library path. |
787 | ||
788 | ld_plugin_status | |
ca09d69a | 789 | Plugin_manager::set_extra_library_path(const char* path) |
42218b9f RÁE |
790 | { |
791 | this->extra_search_path_ = std::string(path); | |
792 | return LDPS_OK; | |
793 | } | |
794 | ||
89fc3421 CC |
795 | // Add a new input file. |
796 | ||
797 | ld_plugin_status | |
ca09d69a | 798 | Plugin_manager::add_input_file(const char* pathname, bool is_lib) |
89fc3421 | 799 | { |
ae3b5189 CD |
800 | Input_file_argument file(pathname, |
801 | (is_lib | |
802 | ? Input_file_argument::INPUT_FILE_TYPE_LIBRARY | |
803 | : Input_file_argument::INPUT_FILE_TYPE_FILE), | |
42218b9f RÁE |
804 | (is_lib |
805 | ? this->extra_search_path_.c_str() | |
806 | : ""), | |
807 | false, | |
808 | this->options_); | |
89fc3421 CC |
809 | Input_argument* input_argument = new Input_argument(file); |
810 | Task_token* next_blocker = new Task_token(true); | |
811 | next_blocker->add_blocker(); | |
8c21d9d3 | 812 | if (parameters->incremental()) |
40f36857 CC |
813 | gold_error(_("input files added by plug-ins in --incremental mode not " |
814 | "supported yet")); | |
f1ed28fb | 815 | this->workqueue_->queue_soon(new Read_symbols(this->input_objects_, |
89fc3421 CC |
816 | this->symtab_, |
817 | this->layout_, | |
818 | this->dirpath_, | |
15f8229b | 819 | 0, |
89fc3421 CC |
820 | this->mapfile_, |
821 | input_argument, | |
822 | NULL, | |
b0193076 | 823 | NULL, |
89fc3421 CC |
824 | this->this_blocker_, |
825 | next_blocker)); | |
826 | this->this_blocker_ = next_blocker; | |
0f3b89d8 | 827 | this->any_added_ = true; |
89fc3421 CC |
828 | return LDPS_OK; |
829 | } | |
830 | ||
831 | // Class Pluginobj. | |
832 | ||
2ea97941 ILT |
833 | Pluginobj::Pluginobj(const std::string& name, Input_file* input_file, |
834 | off_t offset, off_t filesize) | |
835 | : Object(name, input_file, false, offset), | |
836 | nsyms_(0), syms_(NULL), symbols_(), filesize_(filesize), comdat_map_() | |
89fc3421 CC |
837 | { |
838 | } | |
839 | ||
235061c2 | 840 | // Return TRUE if a defined symbol is referenced from outside the |
f7c5b166 CC |
841 | // universe of claimed objects. Only references from relocatable, |
842 | // non-IR (unclaimed) objects count as a reference. References from | |
843 | // dynamic objects count only as "visible". | |
d66a9eb3 CC |
844 | |
845 | static inline bool | |
235061c2 | 846 | is_referenced_from_outside(Symbol* lsym) |
d66a9eb3 CC |
847 | { |
848 | if (lsym->in_real_elf()) | |
849 | return true; | |
850 | if (parameters->options().relocatable()) | |
851 | return true; | |
84ced98a RÁE |
852 | if (parameters->options().is_undefined(lsym->name())) |
853 | return true; | |
235061c2 CC |
854 | return false; |
855 | } | |
856 | ||
857 | // Return TRUE if a defined symbol might be reachable from outside the | |
858 | // load module. | |
859 | ||
860 | static inline bool | |
861 | is_visible_from_outside(Symbol* lsym) | |
862 | { | |
f7c5b166 CC |
863 | if (lsym->in_dyn()) |
864 | return true; | |
d66a9eb3 CC |
865 | if (parameters->options().export_dynamic() || parameters->options().shared()) |
866 | return lsym->is_externally_visible(); | |
867 | return false; | |
868 | } | |
869 | ||
89fc3421 CC |
870 | // Get symbol resolution info. |
871 | ||
872 | ld_plugin_status | |
235061c2 CC |
873 | Pluginobj::get_symbol_resolution_info(int nsyms, |
874 | ld_plugin_symbol* syms, | |
875 | int version) const | |
876 | { | |
877 | // For version 1 of this interface, we cannot use | |
878 | // LDPR_PREVAILING_DEF_IRONLY_EXP, so we return LDPR_PREVAILING_DEF | |
879 | // instead. | |
880 | const ld_plugin_symbol_resolution ldpr_prevailing_def_ironly_exp | |
881 | = (version > 1 | |
882 | ? LDPR_PREVAILING_DEF_IRONLY_EXP | |
883 | : LDPR_PREVAILING_DEF); | |
884 | ||
abc8dcba | 885 | if (nsyms > this->nsyms_) |
89fc3421 | 886 | return LDPS_NO_SYMS; |
b0193076 RÁE |
887 | |
888 | if (static_cast<size_t>(nsyms) > this->symbols_.size()) | |
889 | { | |
890 | // We never decided to include this object. We mark all symbols as | |
891 | // preempted. | |
ca09d69a | 892 | gold_assert(this->symbols_.size() == 0); |
b0193076 RÁE |
893 | for (int i = 0; i < nsyms; i++) |
894 | syms[i].resolution = LDPR_PREEMPTED_REG; | |
895 | return LDPS_OK; | |
896 | } | |
897 | ||
89fc3421 CC |
898 | for (int i = 0; i < nsyms; i++) |
899 | { | |
900 | ld_plugin_symbol* isym = &syms[i]; | |
901 | Symbol* lsym = this->symbols_[i]; | |
902 | ld_plugin_symbol_resolution res = LDPR_UNKNOWN; | |
903 | ||
904 | if (lsym->is_undefined()) | |
905 | // The symbol remains undefined. | |
906 | res = LDPR_UNDEF; | |
907 | else if (isym->def == LDPK_UNDEF | |
908 | || isym->def == LDPK_WEAKUNDEF | |
909 | || isym->def == LDPK_COMMON) | |
910 | { | |
911 | // The original symbol was undefined or common. | |
912 | if (lsym->source() != Symbol::FROM_OBJECT) | |
913 | res = LDPR_RESOLVED_EXEC; | |
be234d88 | 914 | else if (lsym->object()->pluginobj() == this) |
235061c2 CC |
915 | { |
916 | if (is_referenced_from_outside(lsym)) | |
917 | res = LDPR_PREVAILING_DEF; | |
918 | else if (is_visible_from_outside(lsym)) | |
919 | res = ldpr_prevailing_def_ironly_exp; | |
920 | else | |
921 | res = LDPR_PREVAILING_DEF_IRONLY; | |
922 | } | |
89fc3421 CC |
923 | else if (lsym->object()->pluginobj() != NULL) |
924 | res = LDPR_RESOLVED_IR; | |
925 | else if (lsym->object()->is_dynamic()) | |
926 | res = LDPR_RESOLVED_DYN; | |
927 | else | |
928 | res = LDPR_RESOLVED_EXEC; | |
929 | } | |
930 | else | |
931 | { | |
932 | // The original symbol was a definition. | |
933 | if (lsym->source() != Symbol::FROM_OBJECT) | |
934 | res = LDPR_PREEMPTED_REG; | |
935 | else if (lsym->object() == static_cast<const Object*>(this)) | |
235061c2 CC |
936 | { |
937 | if (is_referenced_from_outside(lsym)) | |
938 | res = LDPR_PREVAILING_DEF; | |
939 | else if (is_visible_from_outside(lsym)) | |
940 | res = ldpr_prevailing_def_ironly_exp; | |
941 | else | |
942 | res = LDPR_PREVAILING_DEF_IRONLY; | |
943 | } | |
89fc3421 CC |
944 | else |
945 | res = (lsym->object()->pluginobj() != NULL | |
946 | ? LDPR_PREEMPTED_IR | |
947 | : LDPR_PREEMPTED_REG); | |
948 | } | |
949 | isym->resolution = res; | |
950 | } | |
951 | return LDPS_OK; | |
952 | } | |
953 | ||
954 | // Return TRUE if the comdat group with key COMDAT_KEY from this object | |
955 | // should be kept. | |
956 | ||
957 | bool | |
2ea97941 | 958 | Pluginobj::include_comdat_group(std::string comdat_key, Layout* layout) |
89fc3421 CC |
959 | { |
960 | std::pair<Comdat_map::iterator, bool> ins = | |
961 | this->comdat_map_.insert(std::make_pair(comdat_key, false)); | |
962 | ||
963 | // If this is the first time we've seen this comdat key, ask the | |
964 | // layout object whether it should be included. | |
965 | if (ins.second) | |
2ea97941 ILT |
966 | ins.first->second = layout->find_or_add_kept_section(comdat_key, |
967 | NULL, 0, true, | |
968 | true, NULL); | |
89fc3421 CC |
969 | |
970 | return ins.first->second; | |
971 | } | |
972 | ||
973 | // Class Sized_pluginobj. | |
974 | ||
975 | template<int size, bool big_endian> | |
976 | Sized_pluginobj<size, big_endian>::Sized_pluginobj( | |
2ea97941 ILT |
977 | const std::string& name, |
978 | Input_file* input_file, | |
979 | off_t offset, | |
980 | off_t filesize) | |
981 | : Pluginobj(name, input_file, offset, filesize) | |
89fc3421 CC |
982 | { |
983 | } | |
984 | ||
985 | // Read the symbols. Not used for plugin objects. | |
986 | ||
987 | template<int size, bool big_endian> | |
988 | void | |
989 | Sized_pluginobj<size, big_endian>::do_read_symbols(Read_symbols_data*) | |
990 | { | |
991 | gold_unreachable(); | |
992 | } | |
993 | ||
994 | // Lay out the input sections. Not used for plugin objects. | |
995 | ||
996 | template<int size, bool big_endian> | |
997 | void | |
998 | Sized_pluginobj<size, big_endian>::do_layout(Symbol_table*, Layout*, | |
999 | Read_symbols_data*) | |
1000 | { | |
1001 | gold_unreachable(); | |
1002 | } | |
1003 | ||
1004 | // Add the symbols to the symbol table. | |
1005 | ||
89fc3421 CC |
1006 | template<int size, bool big_endian> |
1007 | void | |
1008 | Sized_pluginobj<size, big_endian>::do_add_symbols(Symbol_table* symtab, | |
f488e4b0 | 1009 | Read_symbols_data*, |
2ea97941 | 1010 | Layout* layout) |
89fc3421 CC |
1011 | { |
1012 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1013 | unsigned char symbuf[sym_size]; | |
1014 | elfcpp::Sym<size, big_endian> sym(symbuf); | |
1015 | elfcpp::Sym_write<size, big_endian> osym(symbuf); | |
1016 | ||
1017 | typedef typename elfcpp::Elf_types<size>::Elf_WXword Elf_size_type; | |
1018 | ||
1019 | this->symbols_.resize(this->nsyms_); | |
1020 | ||
1021 | for (int i = 0; i < this->nsyms_; ++i) | |
1022 | { | |
ca09d69a | 1023 | const struct ld_plugin_symbol* isym = &this->syms_[i]; |
2ea97941 | 1024 | const char* name = isym->name; |
89fc3421 CC |
1025 | const char* ver = isym->version; |
1026 | elfcpp::Elf_Half shndx; | |
1027 | elfcpp::STB bind; | |
1028 | elfcpp::STV vis; | |
1029 | ||
2ea97941 ILT |
1030 | if (name != NULL && name[0] == '\0') |
1031 | name = NULL; | |
89fc3421 CC |
1032 | if (ver != NULL && ver[0] == '\0') |
1033 | ver = NULL; | |
1034 | ||
1035 | switch (isym->def) | |
1036 | { | |
1037 | case LDPK_WEAKDEF: | |
1038 | case LDPK_WEAKUNDEF: | |
1039 | bind = elfcpp::STB_WEAK; | |
1040 | break; | |
1041 | case LDPK_DEF: | |
1042 | case LDPK_UNDEF: | |
1043 | case LDPK_COMMON: | |
1044 | default: | |
1045 | bind = elfcpp::STB_GLOBAL; | |
1046 | break; | |
1047 | } | |
1048 | ||
1049 | switch (isym->def) | |
1050 | { | |
1051 | case LDPK_DEF: | |
1052 | case LDPK_WEAKDEF: | |
1053 | shndx = elfcpp::SHN_ABS; | |
1054 | break; | |
1055 | case LDPK_COMMON: | |
1056 | shndx = elfcpp::SHN_COMMON; | |
1057 | break; | |
1058 | case LDPK_UNDEF: | |
1059 | case LDPK_WEAKUNDEF: | |
1060 | default: | |
1061 | shndx = elfcpp::SHN_UNDEF; | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | switch (isym->visibility) | |
1066 | { | |
1067 | case LDPV_PROTECTED: | |
105b6afd | 1068 | vis = elfcpp::STV_PROTECTED; |
89fc3421 CC |
1069 | break; |
1070 | case LDPV_INTERNAL: | |
105b6afd | 1071 | vis = elfcpp::STV_INTERNAL; |
89fc3421 CC |
1072 | break; |
1073 | case LDPV_HIDDEN: | |
105b6afd | 1074 | vis = elfcpp::STV_HIDDEN; |
89fc3421 CC |
1075 | break; |
1076 | case LDPV_DEFAULT: | |
1077 | default: | |
1078 | vis = elfcpp::STV_DEFAULT; | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | if (isym->comdat_key != NULL | |
1083 | && isym->comdat_key[0] != '\0' | |
2ea97941 | 1084 | && !this->include_comdat_group(isym->comdat_key, layout)) |
89fc3421 CC |
1085 | shndx = elfcpp::SHN_UNDEF; |
1086 | ||
1087 | osym.put_st_name(0); | |
1088 | osym.put_st_value(0); | |
1089 | osym.put_st_size(static_cast<Elf_size_type>(isym->size)); | |
1090 | osym.put_st_info(bind, elfcpp::STT_NOTYPE); | |
1091 | osym.put_st_other(vis, 0); | |
1092 | osym.put_st_shndx(shndx); | |
1093 | ||
1094 | this->symbols_[i] = | |
2ea97941 | 1095 | symtab->add_from_pluginobj<size, big_endian>(this, name, ver, &sym); |
89fc3421 CC |
1096 | } |
1097 | } | |
1098 | ||
b0193076 RÁE |
1099 | template<int size, bool big_endian> |
1100 | Archive::Should_include | |
1101 | Sized_pluginobj<size, big_endian>::do_should_include_member( | |
88a4108b ILT |
1102 | Symbol_table* symtab, |
1103 | Layout* layout, | |
1104 | Read_symbols_data*, | |
1105 | std::string* why) | |
b0193076 RÁE |
1106 | { |
1107 | char* tmpbuf = NULL; | |
1108 | size_t tmpbuflen = 0; | |
1109 | ||
88a4108b ILT |
1110 | for (int i = 0; i < this->nsyms_; ++i) |
1111 | { | |
1112 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
1113 | const char* name = sym.name; | |
1114 | Symbol* symbol; | |
1115 | Archive::Should_include t = Archive::should_include_member(symtab, | |
1116 | layout, | |
1117 | name, | |
1118 | &symbol, why, | |
1119 | &tmpbuf, | |
1120 | &tmpbuflen); | |
b0193076 RÁE |
1121 | if (t == Archive::SHOULD_INCLUDE_YES) |
1122 | { | |
1123 | if (tmpbuf != NULL) | |
1124 | free(tmpbuf); | |
1125 | return t; | |
1126 | } | |
88a4108b | 1127 | } |
b0193076 RÁE |
1128 | if (tmpbuf != NULL) |
1129 | free(tmpbuf); | |
1130 | return Archive::SHOULD_INCLUDE_UNKNOWN; | |
1131 | } | |
1132 | ||
e0c52780 CC |
1133 | // Iterate over global symbols, calling a visitor class V for each. |
1134 | ||
1135 | template<int size, bool big_endian> | |
1136 | void | |
1137 | Sized_pluginobj<size, big_endian>::do_for_all_global_symbols( | |
1138 | Read_symbols_data*, | |
1139 | Library_base::Symbol_visitor_base* v) | |
1140 | { | |
1141 | for (int i = 0; i < this->nsyms_; ++i) | |
1142 | { | |
1143 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
1144 | if (sym.def != LDPK_UNDEF) | |
1145 | v->visit(sym.name); | |
1146 | } | |
1147 | } | |
1148 | ||
cdc29364 CC |
1149 | // Iterate over local symbols, calling a visitor class V for each GOT offset |
1150 | // associated with a local symbol. | |
1151 | template<int size, bool big_endian> | |
1152 | void | |
1153 | Sized_pluginobj<size, big_endian>::do_for_all_local_got_entries( | |
1154 | Got_offset_list::Visitor*) const | |
1155 | { | |
1156 | gold_unreachable(); | |
1157 | } | |
1158 | ||
89fc3421 CC |
1159 | // Get the size of a section. Not used for plugin objects. |
1160 | ||
1161 | template<int size, bool big_endian> | |
1162 | uint64_t | |
1163 | Sized_pluginobj<size, big_endian>::do_section_size(unsigned int) | |
1164 | { | |
1165 | gold_unreachable(); | |
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | // Get the name of a section. Not used for plugin objects. | |
1170 | ||
1171 | template<int size, bool big_endian> | |
1172 | std::string | |
1173 | Sized_pluginobj<size, big_endian>::do_section_name(unsigned int) | |
1174 | { | |
1175 | gold_unreachable(); | |
1176 | return std::string(); | |
1177 | } | |
1178 | ||
1179 | // Return a view of the contents of a section. Not used for plugin objects. | |
1180 | ||
1181 | template<int size, bool big_endian> | |
c1027032 CC |
1182 | const unsigned char* |
1183 | Sized_pluginobj<size, big_endian>::do_section_contents( | |
1184 | unsigned int, | |
1185 | section_size_type*, | |
1186 | bool) | |
89fc3421 | 1187 | { |
89fc3421 | 1188 | gold_unreachable(); |
c1027032 | 1189 | return NULL; |
89fc3421 CC |
1190 | } |
1191 | ||
1192 | // Return section flags. Not used for plugin objects. | |
1193 | ||
1194 | template<int size, bool big_endian> | |
1195 | uint64_t | |
1196 | Sized_pluginobj<size, big_endian>::do_section_flags(unsigned int) | |
1197 | { | |
1198 | gold_unreachable(); | |
1199 | return 0; | |
1200 | } | |
1201 | ||
ef15dade ST |
1202 | // Return section entsize. Not used for plugin objects. |
1203 | ||
1204 | template<int size, bool big_endian> | |
1205 | uint64_t | |
1206 | Sized_pluginobj<size, big_endian>::do_section_entsize(unsigned int) | |
1207 | { | |
1208 | gold_unreachable(); | |
1209 | return 0; | |
1210 | } | |
1211 | ||
89fc3421 CC |
1212 | // Return section address. Not used for plugin objects. |
1213 | ||
1214 | template<int size, bool big_endian> | |
1215 | uint64_t | |
1216 | Sized_pluginobj<size, big_endian>::do_section_address(unsigned int) | |
1217 | { | |
1218 | gold_unreachable(); | |
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | // Return section type. Not used for plugin objects. | |
1223 | ||
1224 | template<int size, bool big_endian> | |
1225 | unsigned int | |
1226 | Sized_pluginobj<size, big_endian>::do_section_type(unsigned int) | |
1227 | { | |
1228 | gold_unreachable(); | |
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | // Return the section link field. Not used for plugin objects. | |
1233 | ||
1234 | template<int size, bool big_endian> | |
1235 | unsigned int | |
1236 | Sized_pluginobj<size, big_endian>::do_section_link(unsigned int) | |
1237 | { | |
1238 | gold_unreachable(); | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | // Return the section link field. Not used for plugin objects. | |
1243 | ||
1244 | template<int size, bool big_endian> | |
1245 | unsigned int | |
1246 | Sized_pluginobj<size, big_endian>::do_section_info(unsigned int) | |
1247 | { | |
1248 | gold_unreachable(); | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | // Return the section alignment. Not used for plugin objects. | |
1253 | ||
1254 | template<int size, bool big_endian> | |
1255 | uint64_t | |
1256 | Sized_pluginobj<size, big_endian>::do_section_addralign(unsigned int) | |
1257 | { | |
1258 | gold_unreachable(); | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | // Return the Xindex structure to use. Not used for plugin objects. | |
1263 | ||
1264 | template<int size, bool big_endian> | |
1265 | Xindex* | |
1266 | Sized_pluginobj<size, big_endian>::do_initialize_xindex() | |
1267 | { | |
1268 | gold_unreachable(); | |
1269 | return NULL; | |
1270 | } | |
1271 | ||
53bbcc1b CC |
1272 | // Get symbol counts. Don't count plugin objects; the replacement |
1273 | // files will provide the counts. | |
89fc3421 CC |
1274 | |
1275 | template<int size, bool big_endian> | |
1276 | void | |
53bbcc1b CC |
1277 | Sized_pluginobj<size, big_endian>::do_get_global_symbol_counts( |
1278 | const Symbol_table*, | |
1279 | size_t* defined, | |
1280 | size_t* used) const | |
89fc3421 | 1281 | { |
53bbcc1b CC |
1282 | *defined = 0; |
1283 | *used = 0; | |
89fc3421 CC |
1284 | } |
1285 | ||
dde3f402 ILT |
1286 | // Get symbols. Not used for plugin objects. |
1287 | ||
1288 | template<int size, bool big_endian> | |
1289 | const Object::Symbols* | |
1290 | Sized_pluginobj<size, big_endian>::do_get_global_symbols() const | |
1291 | { | |
1292 | gold_unreachable(); | |
1293 | } | |
1294 | ||
5995b570 | 1295 | // Class Plugin_finish. This task runs after all replacement files have |
78384e8f CC |
1296 | // been added. For now, it's a placeholder for a possible plugin API |
1297 | // to allow the plugin to release most of its resources. The cleanup | |
1298 | // handlers must be called later, because they can remove the temporary | |
1299 | // object files that are needed until the end of the link. | |
89fc3421 | 1300 | |
5995b570 | 1301 | class Plugin_finish : public Task |
89fc3421 CC |
1302 | { |
1303 | public: | |
5995b570 | 1304 | Plugin_finish(Task_token* this_blocker, Task_token* next_blocker) |
89fc3421 CC |
1305 | : this_blocker_(this_blocker), next_blocker_(next_blocker) |
1306 | { } | |
1307 | ||
5995b570 | 1308 | ~Plugin_finish() |
89fc3421 CC |
1309 | { |
1310 | if (this->this_blocker_ != NULL) | |
1311 | delete this->this_blocker_; | |
1312 | } | |
1313 | ||
1314 | Task_token* | |
1315 | is_runnable() | |
1316 | { | |
1317 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1318 | return this->this_blocker_; | |
1319 | return NULL; | |
1320 | } | |
1321 | ||
1322 | void | |
1323 | locks(Task_locker* tl) | |
1324 | { tl->add(this, this->next_blocker_); } | |
1325 | ||
1326 | void | |
1327 | run(Workqueue*) | |
483620e8 | 1328 | { |
78384e8f | 1329 | // We could call early cleanup handlers here. |
483620e8 | 1330 | } |
89fc3421 CC |
1331 | |
1332 | std::string | |
1333 | get_name() const | |
5995b570 | 1334 | { return "Plugin_finish"; } |
89fc3421 CC |
1335 | |
1336 | private: | |
1337 | Task_token* this_blocker_; | |
1338 | Task_token* next_blocker_; | |
1339 | }; | |
1340 | ||
1341 | // Class Plugin_hook. | |
1342 | ||
1343 | Plugin_hook::~Plugin_hook() | |
1344 | { | |
1345 | } | |
1346 | ||
1347 | // Return whether a Plugin_hook task is runnable. | |
1348 | ||
1349 | Task_token* | |
1350 | Plugin_hook::is_runnable() | |
1351 | { | |
1352 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1353 | return this->this_blocker_; | |
1354 | return NULL; | |
1355 | } | |
1356 | ||
1357 | // Return a Task_locker for a Plugin_hook task. We don't need any | |
1358 | // locks here. | |
1359 | ||
1360 | void | |
1361 | Plugin_hook::locks(Task_locker*) | |
1362 | { | |
1363 | } | |
1364 | ||
89fc3421 CC |
1365 | // Run the "all symbols read" plugin hook. |
1366 | ||
1367 | void | |
5995b570 | 1368 | Plugin_hook::run(Workqueue* workqueue) |
89fc3421 CC |
1369 | { |
1370 | gold_assert(this->options_.has_plugins()); | |
a10ae760 | 1371 | Symbol* start_sym = this->symtab_->lookup(parameters->entry()); |
91ff43fe RÁE |
1372 | if (start_sym != NULL) |
1373 | start_sym->set_in_real_elf(); | |
1374 | ||
89fc3421 | 1375 | this->options_.plugins()->all_symbols_read(workqueue, |
0f7c0701 | 1376 | this, |
89fc3421 CC |
1377 | this->input_objects_, |
1378 | this->symtab_, | |
89fc3421 CC |
1379 | this->dirpath_, |
1380 | this->mapfile_, | |
1381 | &this->this_blocker_); | |
5995b570 CC |
1382 | workqueue->queue_soon(new Plugin_finish(this->this_blocker_, |
1383 | this->next_blocker_)); | |
89fc3421 CC |
1384 | } |
1385 | ||
1386 | // The C interface routines called by the plugins. | |
1387 | ||
1388 | #ifdef ENABLE_PLUGINS | |
1389 | ||
1390 | // Register a claim-file handler. | |
1391 | ||
1392 | static enum ld_plugin_status | |
1393 | register_claim_file(ld_plugin_claim_file_handler handler) | |
1394 | { | |
1395 | gold_assert(parameters->options().has_plugins()); | |
1396 | parameters->options().plugins()->set_claim_file_handler(handler); | |
1397 | return LDPS_OK; | |
1398 | } | |
1399 | ||
1400 | // Register an all-symbols-read handler. | |
1401 | ||
1402 | static enum ld_plugin_status | |
1403 | register_all_symbols_read(ld_plugin_all_symbols_read_handler handler) | |
1404 | { | |
1405 | gold_assert(parameters->options().has_plugins()); | |
1406 | parameters->options().plugins()->set_all_symbols_read_handler(handler); | |
1407 | return LDPS_OK; | |
1408 | } | |
1409 | ||
1410 | // Register a cleanup handler. | |
1411 | ||
1412 | static enum ld_plugin_status | |
1413 | register_cleanup(ld_plugin_cleanup_handler handler) | |
1414 | { | |
1415 | gold_assert(parameters->options().has_plugins()); | |
1416 | parameters->options().plugins()->set_cleanup_handler(handler); | |
1417 | return LDPS_OK; | |
1418 | } | |
1419 | ||
1420 | // Add symbols from a plugin-claimed input file. | |
1421 | ||
1422 | static enum ld_plugin_status | |
ca09d69a | 1423 | add_symbols(void* handle, int nsyms, const ld_plugin_symbol* syms) |
89fc3421 CC |
1424 | { |
1425 | gold_assert(parameters->options().has_plugins()); | |
1426 | Pluginobj* obj = parameters->options().plugins()->make_plugin_object( | |
1427 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1428 | if (obj == NULL) | |
1429 | return LDPS_ERR; | |
1430 | obj->store_incoming_symbols(nsyms, syms); | |
1431 | return LDPS_OK; | |
1432 | } | |
1433 | ||
0f7c0701 CC |
1434 | // Get the input file information with an open (possibly re-opened) |
1435 | // file descriptor. | |
1436 | ||
1437 | static enum ld_plugin_status | |
ca09d69a | 1438 | get_input_file(const void* handle, struct ld_plugin_input_file* file) |
0f7c0701 CC |
1439 | { |
1440 | gold_assert(parameters->options().has_plugins()); | |
1441 | unsigned int obj_index = | |
1442 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1443 | return parameters->options().plugins()->get_input_file(obj_index, file); | |
1444 | } | |
1445 | ||
1446 | // Release the input file. | |
1447 | ||
1448 | static enum ld_plugin_status | |
ca09d69a | 1449 | release_input_file(const void* handle) |
0f7c0701 CC |
1450 | { |
1451 | gold_assert(parameters->options().has_plugins()); | |
1452 | unsigned int obj_index = | |
1453 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1454 | return parameters->options().plugins()->release_input_file(obj_index); | |
1455 | } | |
1456 | ||
9c793f14 RÁE |
1457 | static enum ld_plugin_status |
1458 | get_view(const void *handle, const void **viewp) | |
1459 | { | |
1460 | gold_assert(parameters->options().has_plugins()); | |
1461 | unsigned int obj_index = | |
1462 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1463 | return parameters->options().plugins()->get_view(obj_index, viewp); | |
1464 | } | |
1465 | ||
89fc3421 CC |
1466 | // Get the symbol resolution info for a plugin-claimed input file. |
1467 | ||
1468 | static enum ld_plugin_status | |
ca09d69a | 1469 | get_symbols(const void* handle, int nsyms, ld_plugin_symbol* syms) |
89fc3421 CC |
1470 | { |
1471 | gold_assert(parameters->options().has_plugins()); | |
e9552f7e ST |
1472 | Object* obj = parameters->options().plugins()->object( |
1473 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
89fc3421 CC |
1474 | if (obj == NULL) |
1475 | return LDPS_ERR; | |
e9552f7e ST |
1476 | Pluginobj* plugin_obj = obj->pluginobj(); |
1477 | if (plugin_obj == NULL) | |
1478 | return LDPS_ERR; | |
235061c2 CC |
1479 | return plugin_obj->get_symbol_resolution_info(nsyms, syms, 1); |
1480 | } | |
1481 | ||
1482 | // Version 2 of the above. The only difference is that this version | |
1483 | // is allowed to return the resolution code LDPR_PREVAILING_DEF_IRONLY_EXP. | |
1484 | ||
1485 | static enum ld_plugin_status | |
1486 | get_symbols_v2(const void* handle, int nsyms, ld_plugin_symbol* syms) | |
1487 | { | |
1488 | gold_assert(parameters->options().has_plugins()); | |
1489 | Object* obj = parameters->options().plugins()->object( | |
1490 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1491 | if (obj == NULL) | |
1492 | return LDPS_ERR; | |
1493 | Pluginobj* plugin_obj = obj->pluginobj(); | |
1494 | if (plugin_obj == NULL) | |
1495 | return LDPS_ERR; | |
1496 | return plugin_obj->get_symbol_resolution_info(nsyms, syms, 2); | |
89fc3421 CC |
1497 | } |
1498 | ||
1499 | // Add a new (real) input file generated by a plugin. | |
1500 | ||
1501 | static enum ld_plugin_status | |
ca09d69a | 1502 | add_input_file(const char* pathname) |
89fc3421 CC |
1503 | { |
1504 | gold_assert(parameters->options().has_plugins()); | |
e99daf92 ILT |
1505 | return parameters->options().plugins()->add_input_file(pathname, false); |
1506 | } | |
1507 | ||
1508 | // Add a new (real) library required by a plugin. | |
1509 | ||
1510 | static enum ld_plugin_status | |
ca09d69a | 1511 | add_input_library(const char* pathname) |
e99daf92 ILT |
1512 | { |
1513 | gold_assert(parameters->options().has_plugins()); | |
1514 | return parameters->options().plugins()->add_input_file(pathname, true); | |
89fc3421 CC |
1515 | } |
1516 | ||
42218b9f RÁE |
1517 | // Set the extra library path to be used by libraries added via |
1518 | // add_input_library | |
1519 | ||
1520 | static enum ld_plugin_status | |
ca09d69a | 1521 | set_extra_library_path(const char* path) |
42218b9f RÁE |
1522 | { |
1523 | gold_assert(parameters->options().has_plugins()); | |
1524 | return parameters->options().plugins()->set_extra_library_path(path); | |
1525 | } | |
1526 | ||
89fc3421 CC |
1527 | // Issue a diagnostic message from a plugin. |
1528 | ||
1529 | static enum ld_plugin_status | |
ca09d69a | 1530 | message(int level, const char* format, ...) |
89fc3421 CC |
1531 | { |
1532 | va_list args; | |
1533 | va_start(args, format); | |
1534 | ||
1535 | switch (level) | |
1536 | { | |
1537 | case LDPL_INFO: | |
1538 | parameters->errors()->info(format, args); | |
1539 | break; | |
1540 | case LDPL_WARNING: | |
1541 | parameters->errors()->warning(format, args); | |
1542 | break; | |
1543 | case LDPL_ERROR: | |
1544 | default: | |
1545 | parameters->errors()->error(format, args); | |
1546 | break; | |
1547 | case LDPL_FATAL: | |
1548 | parameters->errors()->fatal(format, args); | |
1549 | break; | |
1550 | } | |
1551 | ||
1552 | va_end(args); | |
1553 | return LDPS_OK; | |
1554 | } | |
1555 | ||
e9552f7e ST |
1556 | // Get the section count of the object corresponding to the handle. This |
1557 | // plugin interface can only be called in the claim_file handler of the plugin. | |
1558 | ||
1559 | static enum ld_plugin_status | |
1560 | get_input_section_count(const void* handle, unsigned int* count) | |
1561 | { | |
1562 | gold_assert(parameters->options().has_plugins()); | |
1563 | ||
1564 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1565 | return LDPS_ERR; | |
1566 | ||
1567 | Object* obj = parameters->options().plugins()->get_elf_object(handle); | |
1568 | ||
1569 | if (obj == NULL) | |
1570 | return LDPS_ERR; | |
1571 | ||
1572 | *count = obj->shnum(); | |
1573 | return LDPS_OK; | |
1574 | } | |
1575 | ||
1576 | // Get the type of the specified section in the object corresponding | |
1577 | // to the handle. This plugin interface can only be called in the | |
1578 | // claim_file handler of the plugin. | |
1579 | ||
1580 | static enum ld_plugin_status | |
1581 | get_input_section_type(const struct ld_plugin_section section, | |
1582 | unsigned int* type) | |
1583 | { | |
1584 | gold_assert(parameters->options().has_plugins()); | |
1585 | ||
1586 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1587 | return LDPS_ERR; | |
1588 | ||
1589 | Object* obj | |
1590 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1591 | ||
1592 | if (obj == NULL) | |
1593 | return LDPS_BAD_HANDLE; | |
1594 | ||
1595 | *type = obj->section_type(section.shndx); | |
1596 | return LDPS_OK; | |
1597 | } | |
1598 | ||
1599 | // Get the name of the specified section in the object corresponding | |
1600 | // to the handle. This plugin interface can only be called in the | |
1601 | // claim_file handler of the plugin. | |
1602 | ||
1603 | static enum ld_plugin_status | |
1604 | get_input_section_name(const struct ld_plugin_section section, | |
1605 | char** section_name_ptr) | |
1606 | { | |
1607 | gold_assert(parameters->options().has_plugins()); | |
1608 | ||
1609 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1610 | return LDPS_ERR; | |
1611 | ||
1612 | Object* obj | |
1613 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1614 | ||
1615 | if (obj == NULL) | |
1616 | return LDPS_BAD_HANDLE; | |
1617 | ||
1618 | // Check if the object is locked before getting the section name. | |
1619 | gold_assert(obj->is_locked()); | |
1620 | ||
1621 | const std::string section_name = obj->section_name(section.shndx); | |
1622 | *section_name_ptr = static_cast<char*>(malloc(section_name.length() + 1)); | |
1623 | memcpy(*section_name_ptr, section_name.c_str(), section_name.length() + 1); | |
1624 | return LDPS_OK; | |
1625 | } | |
1626 | ||
1627 | // Get the contents of the specified section in the object corresponding | |
1628 | // to the handle. This plugin interface can only be called in the | |
1629 | // claim_file handler of the plugin. | |
1630 | ||
1631 | static enum ld_plugin_status | |
1632 | get_input_section_contents(const struct ld_plugin_section section, | |
1633 | const unsigned char** section_contents_ptr, | |
1634 | size_t* len) | |
1635 | { | |
1636 | gold_assert(parameters->options().has_plugins()); | |
1637 | ||
1638 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1639 | return LDPS_ERR; | |
1640 | ||
1641 | Object* obj | |
1642 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1643 | ||
1644 | if (obj == NULL) | |
1645 | return LDPS_BAD_HANDLE; | |
1646 | ||
1647 | // Check if the object is locked before getting the section contents. | |
1648 | gold_assert(obj->is_locked()); | |
1649 | ||
1650 | section_size_type plen; | |
1651 | *section_contents_ptr | |
1652 | = obj->section_contents(section.shndx, &plen, false); | |
1653 | *len = plen; | |
1654 | return LDPS_OK; | |
1655 | } | |
1656 | ||
1657 | // Specify the ordering of sections in the final layout. The sections are | |
1658 | // specified as (handle,shndx) pairs in the two arrays in the order in | |
1659 | // which they should appear in the final layout. | |
1660 | ||
1661 | static enum ld_plugin_status | |
f0558624 | 1662 | update_section_order(const struct ld_plugin_section* section_list, |
e9552f7e ST |
1663 | unsigned int num_sections) |
1664 | { | |
1665 | gold_assert(parameters->options().has_plugins()); | |
1666 | ||
1667 | if (num_sections == 0) | |
1668 | return LDPS_OK; | |
1669 | ||
1670 | if (section_list == NULL) | |
1671 | return LDPS_ERR; | |
1672 | ||
f0558624 ST |
1673 | Layout* layout = parameters->options().plugins()->layout(); |
1674 | gold_assert (layout != NULL); | |
e9552f7e | 1675 | |
f0558624 ST |
1676 | std::map<Section_id, unsigned int>* order_map |
1677 | = layout->get_section_order_map(); | |
1678 | ||
1679 | /* Store the mapping from Section_id to section position in layout's | |
1680 | order_map to consult after output sections are added. */ | |
e9552f7e ST |
1681 | for (unsigned int i = 0; i < num_sections; ++i) |
1682 | { | |
1683 | Object* obj = parameters->options().plugins()->get_elf_object( | |
1684 | section_list[i].handle); | |
1685 | if (obj == NULL) | |
1686 | return LDPS_BAD_HANDLE; | |
1687 | unsigned int shndx = section_list[i].shndx; | |
1688 | Section_id secn_id(obj, shndx); | |
f0558624 | 1689 | (*order_map)[secn_id] = i + 1; |
e9552f7e ST |
1690 | } |
1691 | ||
e9552f7e ST |
1692 | return LDPS_OK; |
1693 | } | |
1694 | ||
1695 | // Let the linker know that the sections could be reordered. | |
1696 | ||
1697 | static enum ld_plugin_status | |
1698 | allow_section_ordering() | |
1699 | { | |
1700 | gold_assert(parameters->options().has_plugins()); | |
1701 | Layout* layout = parameters->options().plugins()->layout(); | |
1702 | layout->set_section_ordering_specified(); | |
1703 | return LDPS_OK; | |
1704 | } | |
1705 | ||
16164a6b ST |
1706 | // Let the linker know that a subset of sections could be mapped |
1707 | // to a unique segment. | |
1708 | ||
1709 | static enum ld_plugin_status | |
1710 | allow_unique_segment_for_sections() | |
1711 | { | |
1712 | gold_assert(parameters->options().has_plugins()); | |
1713 | Layout* layout = parameters->options().plugins()->layout(); | |
1714 | layout->set_unique_segment_for_sections_specified(); | |
1715 | return LDPS_OK; | |
1716 | } | |
1717 | ||
1718 | // This function should map the list of sections specified in the | |
1719 | // SECTION_LIST to a unique segment. ELF segments do not have names | |
1720 | // and the NAME is used to identify Output Section which should contain | |
1721 | // the list of sections. This Output Section will then be mapped to | |
1722 | // a unique segment. FLAGS is used to specify if any additional segment | |
1723 | // flags need to be set. For instance, a specific segment flag can be | |
1724 | // set to identify this segment. Unsetting segment flags is not possible. | |
1725 | // ALIGN specifies the alignment of the segment. | |
1726 | ||
1727 | static enum ld_plugin_status | |
1728 | unique_segment_for_sections(const char* segment_name, | |
1729 | uint64_t flags, | |
1730 | uint64_t align, | |
1731 | const struct ld_plugin_section* section_list, | |
1732 | unsigned int num_sections) | |
1733 | { | |
1734 | gold_assert(parameters->options().has_plugins()); | |
1735 | ||
1736 | if (num_sections == 0) | |
1737 | return LDPS_OK; | |
1738 | ||
1739 | if (section_list == NULL) | |
1740 | return LDPS_ERR; | |
1741 | ||
1742 | Layout* layout = parameters->options().plugins()->layout(); | |
1743 | gold_assert (layout != NULL); | |
1744 | ||
1745 | Layout::Unique_segment_info* s = new Layout::Unique_segment_info; | |
1746 | s->name = segment_name; | |
1747 | s->flags = flags; | |
1748 | s->align = align; | |
1749 | ||
1750 | for (unsigned int i = 0; i < num_sections; ++i) | |
1751 | { | |
1752 | Object* obj = parameters->options().plugins()->get_elf_object( | |
1753 | section_list[i].handle); | |
1754 | if (obj == NULL) | |
1755 | return LDPS_BAD_HANDLE; | |
1756 | unsigned int shndx = section_list[i].shndx; | |
1757 | Const_section_id secn_id(obj, shndx); | |
1758 | layout->insert_section_segment_map(secn_id, s); | |
1759 | } | |
1760 | ||
1761 | return LDPS_OK; | |
1762 | } | |
1763 | ||
89fc3421 CC |
1764 | #endif // ENABLE_PLUGINS |
1765 | ||
1766 | // Allocate a Pluginobj object of the appropriate size and endianness. | |
1767 | ||
1768 | static Pluginobj* | |
0f7c0701 | 1769 | make_sized_plugin_object(Input_file* input_file, off_t offset, off_t filesize) |
89fc3421 | 1770 | { |
89fc3421 CC |
1771 | Pluginobj* obj = NULL; |
1772 | ||
029ba973 ILT |
1773 | parameters_force_valid_target(); |
1774 | const Target& target(parameters->target()); | |
89fc3421 | 1775 | |
029ba973 | 1776 | if (target.get_size() == 32) |
89fc3421 | 1777 | { |
029ba973 | 1778 | if (target.is_big_endian()) |
92f03fcb | 1779 | #ifdef HAVE_TARGET_32_BIG |
89fc3421 | 1780 | obj = new Sized_pluginobj<32, true>(input_file->filename(), |
0f7c0701 | 1781 | input_file, offset, filesize); |
92f03fcb CC |
1782 | #else |
1783 | gold_error(_("%s: not configured to support " | |
1784 | "32-bit big-endian object"), | |
1785 | input_file->filename().c_str()); | |
89fc3421 | 1786 | #endif |
89fc3421 | 1787 | else |
92f03fcb | 1788 | #ifdef HAVE_TARGET_32_LITTLE |
89fc3421 | 1789 | obj = new Sized_pluginobj<32, false>(input_file->filename(), |
0f7c0701 | 1790 | input_file, offset, filesize); |
92f03fcb CC |
1791 | #else |
1792 | gold_error(_("%s: not configured to support " | |
1793 | "32-bit little-endian object"), | |
1794 | input_file->filename().c_str()); | |
89fc3421 CC |
1795 | #endif |
1796 | } | |
029ba973 | 1797 | else if (target.get_size() == 64) |
89fc3421 | 1798 | { |
029ba973 | 1799 | if (target.is_big_endian()) |
92f03fcb | 1800 | #ifdef HAVE_TARGET_64_BIG |
89fc3421 | 1801 | obj = new Sized_pluginobj<64, true>(input_file->filename(), |
0f7c0701 | 1802 | input_file, offset, filesize); |
92f03fcb CC |
1803 | #else |
1804 | gold_error(_("%s: not configured to support " | |
1805 | "64-bit big-endian object"), | |
1806 | input_file->filename().c_str()); | |
89fc3421 | 1807 | #endif |
89fc3421 | 1808 | else |
92f03fcb | 1809 | #ifdef HAVE_TARGET_64_LITTLE |
89fc3421 | 1810 | obj = new Sized_pluginobj<64, false>(input_file->filename(), |
0f7c0701 | 1811 | input_file, offset, filesize); |
92f03fcb CC |
1812 | #else |
1813 | gold_error(_("%s: not configured to support " | |
1814 | "64-bit little-endian object"), | |
1815 | input_file->filename().c_str()); | |
89fc3421 CC |
1816 | #endif |
1817 | } | |
1818 | ||
1819 | gold_assert(obj != NULL); | |
89fc3421 CC |
1820 | return obj; |
1821 | } | |
1822 | ||
1823 | } // End namespace gold. |