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bae7f79e ILT |
1 | // readsyms.cc -- read input file symbols for gold |
2 | ||
114dfbe1 | 3 | // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@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 | ||
bae7f79e ILT |
23 | #include "gold.h" |
24 | ||
25 | #include <cstring> | |
26 | ||
27 | #include "elfcpp.h" | |
28 | #include "options.h" | |
29 | #include "dirsearch.h" | |
f6ce93d6 | 30 | #include "symtab.h" |
a2fb1b05 | 31 | #include "object.h" |
61ba1cf9 | 32 | #include "archive.h" |
dbe717ef | 33 | #include "script.h" |
61ba1cf9 | 34 | #include "readsyms.h" |
89fc3421 | 35 | #include "plugin.h" |
072fe7ce ILT |
36 | #include "layout.h" |
37 | #include "incremental.h" | |
bae7f79e ILT |
38 | |
39 | namespace gold | |
40 | { | |
41 | ||
ee6d2efe ILT |
42 | // If we fail to open the object, then we won't create an Add_symbols |
43 | // task. However, we still need to unblock the token, or else the | |
44 | // link won't proceed to generate more error messages. We can only | |
17a1d0a9 ILT |
45 | // unblock tokens when the workqueue lock is held, so we need a dummy |
46 | // task to do that. The dummy task has to maintain the right sequence | |
47 | // of blocks, so we need both this_blocker and next_blocker. | |
ee6d2efe ILT |
48 | |
49 | class Unblock_token : public Task | |
50 | { | |
51 | public: | |
52 | Unblock_token(Task_token* this_blocker, Task_token* next_blocker) | |
53 | : this_blocker_(this_blocker), next_blocker_(next_blocker) | |
54 | { } | |
55 | ||
56 | ~Unblock_token() | |
57 | { | |
58 | if (this->this_blocker_ != NULL) | |
59 | delete this->this_blocker_; | |
60 | } | |
61 | ||
17a1d0a9 ILT |
62 | Task_token* |
63 | is_runnable() | |
ee6d2efe ILT |
64 | { |
65 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 ILT |
66 | return this->this_blocker_; |
67 | return NULL; | |
ee6d2efe ILT |
68 | } |
69 | ||
17a1d0a9 ILT |
70 | void |
71 | locks(Task_locker* tl) | |
72 | { tl->add(this, this->next_blocker_); } | |
ee6d2efe ILT |
73 | |
74 | void | |
75 | run(Workqueue*) | |
76 | { } | |
77 | ||
c7912668 ILT |
78 | std::string |
79 | get_name() const | |
80 | { return "Unblock_token"; } | |
81 | ||
ee6d2efe ILT |
82 | private: |
83 | Task_token* this_blocker_; | |
84 | Task_token* next_blocker_; | |
85 | }; | |
86 | ||
bae7f79e ILT |
87 | // Class read_symbols. |
88 | ||
89 | Read_symbols::~Read_symbols() | |
90 | { | |
91 | // The this_blocker_ and next_blocker_ pointers are passed on to the | |
92 | // Add_symbols task. | |
93 | } | |
94 | ||
15f8229b ILT |
95 | // If appropriate, issue a warning about skipping an incompatible |
96 | // file. | |
97 | ||
98 | void | |
99 | Read_symbols::incompatible_warning(const Input_argument* input_argument, | |
100 | const Input_file* input_file) | |
101 | { | |
102 | if (parameters->options().warn_search_mismatch()) | |
103 | gold_warning("skipping incompatible %s while searching for %s", | |
104 | input_file->filename().c_str(), | |
105 | input_argument->file().name()); | |
106 | } | |
107 | ||
108 | // Requeue a Read_symbols task to search for the next object with the | |
109 | // same name. | |
110 | ||
111 | void | |
112 | Read_symbols::requeue(Workqueue* workqueue, Input_objects* input_objects, | |
113 | Symbol_table* symtab, Layout* layout, Dirsearch* dirpath, | |
114 | int dirindex, Mapfile* mapfile, | |
115 | const Input_argument* input_argument, | |
116 | Input_group* input_group, Task_token* next_blocker) | |
117 | { | |
118 | // Bump the directory search index. | |
119 | ++dirindex; | |
120 | ||
121 | // We don't need to worry about this_blocker, since we already | |
122 | // reached it. However, we are removing the blocker on next_blocker | |
123 | // because the calling task is completing. So we need to add a new | |
124 | // blocker. Since next_blocker may be shared by several tasks, we | |
125 | // need to increment the count with the workqueue lock held. | |
126 | workqueue->add_blocker(next_blocker); | |
127 | ||
128 | workqueue->queue(new Read_symbols(input_objects, symtab, layout, dirpath, | |
129 | dirindex, mapfile, input_argument, | |
b0193076 | 130 | input_group, NULL, NULL, next_blocker)); |
15f8229b ILT |
131 | } |
132 | ||
ead1e424 ILT |
133 | // Return whether a Read_symbols task is runnable. We can read an |
134 | // ordinary input file immediately. For an archive specified using | |
135 | // -l, we have to wait until the search path is complete. | |
bae7f79e | 136 | |
17a1d0a9 ILT |
137 | Task_token* |
138 | Read_symbols::is_runnable() | |
bae7f79e | 139 | { |
dbe717ef | 140 | if (this->input_argument_->is_file() |
51dee2fe | 141 | && this->input_argument_->file().may_need_search() |
17a1d0a9 ILT |
142 | && this->dirpath_->token()->is_blocked()) |
143 | return this->dirpath_->token(); | |
bae7f79e | 144 | |
17a1d0a9 | 145 | return NULL; |
bae7f79e ILT |
146 | } |
147 | ||
148 | // Return a Task_locker for a Read_symbols task. We don't need any | |
149 | // locks here. | |
150 | ||
17a1d0a9 | 151 | void |
b0193076 | 152 | Read_symbols::locks(Task_locker* tl) |
bae7f79e | 153 | { |
b0193076 RÁE |
154 | if (this->member_ != NULL) |
155 | tl->add(this, this->next_blocker_); | |
bae7f79e ILT |
156 | } |
157 | ||
ee6d2efe | 158 | // Run a Read_symbols task. |
bae7f79e ILT |
159 | |
160 | void | |
161 | Read_symbols::run(Workqueue* workqueue) | |
ee6d2efe ILT |
162 | { |
163 | // If we didn't queue a new task, then we need to explicitly unblock | |
164 | // the token. | |
165 | if (!this->do_read_symbols(workqueue)) | |
da769d56 ILT |
166 | workqueue->queue_soon(new Unblock_token(this->this_blocker_, |
167 | this->next_blocker_)); | |
ee6d2efe ILT |
168 | } |
169 | ||
b0193076 RÁE |
170 | // Handle a whole lib group. Other then collecting statisticts, this just |
171 | // mimics what we do for regular object files in the command line. | |
172 | ||
173 | bool | |
174 | Read_symbols::do_whole_lib_group(Workqueue* workqueue) | |
175 | { | |
176 | const Input_file_lib* lib_group = this->input_argument_->lib(); | |
177 | ||
178 | ++Lib_group::total_lib_groups; | |
179 | ||
180 | Task_token* this_blocker = this->this_blocker_; | |
181 | for (Input_file_lib::const_iterator i = lib_group->begin(); | |
182 | i != lib_group->end(); | |
183 | ++i) | |
184 | { | |
185 | ++Lib_group::total_members; | |
186 | ++Lib_group::total_members_loaded; | |
187 | ||
188 | const Input_argument* arg = &*i; | |
189 | ||
190 | Task_token* next_blocker; | |
191 | if (i != lib_group->end() - 1) | |
192 | { | |
193 | next_blocker = new Task_token(true); | |
194 | next_blocker->add_blocker(); | |
195 | } | |
196 | else | |
197 | next_blocker = this->next_blocker_; | |
198 | ||
199 | workqueue->queue_soon(new Read_symbols(this->input_objects_, | |
200 | this->symtab_, this->layout_, | |
201 | this->dirpath_, this->dirindex_, | |
202 | this->mapfile_, arg, NULL, | |
203 | NULL, this_blocker, next_blocker)); | |
204 | this_blocker = next_blocker; | |
205 | } | |
206 | ||
207 | return true; | |
208 | } | |
209 | ||
210 | // Handle a lib group. We set Read_symbols Tasks as usual, but have them | |
211 | // just record the symbol data instead of adding the objects. We also start | |
212 | // a Add_lib_group_symbols Task which runs after we've read all the symbols. | |
213 | // In that task we process the members in a loop until we are done. | |
214 | ||
215 | bool | |
216 | Read_symbols::do_lib_group(Workqueue* workqueue) | |
217 | { | |
218 | const Input_file_lib* lib_group = this->input_argument_->lib(); | |
219 | ||
220 | if (lib_group->options().whole_archive()) | |
221 | return this->do_whole_lib_group(workqueue); | |
222 | ||
223 | Lib_group* lib = new Lib_group(lib_group, this); | |
224 | ||
225 | Add_lib_group_symbols* add_lib_group_symbols = | |
226 | new Add_lib_group_symbols(this->symtab_, this->layout_, | |
227 | this->input_objects_, | |
228 | lib, this->next_blocker_); | |
229 | ||
230 | ||
231 | Task_token* next_blocker = new Task_token(true); | |
232 | int j = 0; | |
233 | for (Input_file_lib::const_iterator i = lib_group->begin(); | |
234 | i != lib_group->end(); | |
235 | ++i, ++j) | |
236 | { | |
237 | const Input_argument* arg = &*i; | |
238 | Archive_member* m = lib->get_member(j); | |
239 | ||
240 | next_blocker->add_blocker(); | |
241 | ||
242 | // Since this Read_symbols will not create an Add_symbols, | |
243 | // just pass NULL as this_blocker. | |
244 | workqueue->queue_soon(new Read_symbols(this->input_objects_, | |
245 | this->symtab_, this->layout_, | |
246 | this->dirpath_, this->dirindex_, | |
247 | this->mapfile_, arg, NULL, | |
248 | m, NULL, next_blocker)); | |
249 | } | |
250 | ||
251 | add_lib_group_symbols->set_blocker(next_blocker); | |
252 | workqueue->queue_soon(add_lib_group_symbols); | |
253 | ||
254 | return true; | |
255 | } | |
256 | ||
ee6d2efe ILT |
257 | // Open the file and read the symbols. Return true if a new task was |
258 | // queued, false if that could not happen due to some error. | |
259 | ||
260 | bool | |
261 | Read_symbols::do_read_symbols(Workqueue* workqueue) | |
bae7f79e | 262 | { |
dbe717ef | 263 | if (this->input_argument_->is_group()) |
ead1e424 | 264 | { |
a3ad94ed | 265 | gold_assert(this->input_group_ == NULL); |
ead1e424 | 266 | this->do_group(workqueue); |
ee6d2efe | 267 | return true; |
ead1e424 ILT |
268 | } |
269 | ||
b0193076 RÁE |
270 | if (this->input_argument_->is_lib()) |
271 | return this->do_lib_group(workqueue); | |
272 | ||
5a6f7e2d | 273 | Input_file* input_file = new Input_file(&this->input_argument_->file()); |
15f8229b | 274 | if (!input_file->open(*this->dirpath_, this, &this->dirindex_)) |
ee6d2efe | 275 | return false; |
bae7f79e ILT |
276 | |
277 | // Read enough of the file to pick up the entire ELF header. | |
278 | ||
82dcae9d | 279 | off_t filesize = input_file->file().filesize(); |
bae3688d | 280 | |
82dcae9d ILT |
281 | if (filesize == 0) |
282 | { | |
75f2446e ILT |
283 | gold_error(_("%s: file is empty"), |
284 | input_file->file().filename().c_str()); | |
ee6d2efe | 285 | return false; |
82dcae9d ILT |
286 | } |
287 | ||
f6060a4d ILT |
288 | const unsigned char* ehdr; |
289 | int read_size; | |
290 | bool is_elf = is_elf_object(input_file, 0, &ehdr, &read_size); | |
82dcae9d | 291 | |
89fc3421 CC |
292 | if (read_size >= Archive::sarmag) |
293 | { | |
294 | bool is_thin_archive | |
295 | = memcmp(ehdr, Archive::armagt, Archive::sarmag) == 0; | |
072fe7ce | 296 | if (is_thin_archive |
89fc3421 CC |
297 | || memcmp(ehdr, Archive::armag, Archive::sarmag) == 0) |
298 | { | |
299 | // This is an archive. | |
300 | Archive* arch = new Archive(this->input_argument_->file().name(), | |
301 | input_file, is_thin_archive, | |
302 | this->dirpath_, this); | |
15f8229b | 303 | arch->setup(); |
072fe7ce ILT |
304 | |
305 | if (this->layout_->incremental_inputs()) | |
306 | { | |
b0193076 | 307 | const Input_argument* ia = this->input_argument_; |
072fe7ce ILT |
308 | this->layout_->incremental_inputs()->report_archive(ia, arch); |
309 | } | |
310 | ||
89fc3421 CC |
311 | // Unlock the archive so it can be used in the next task. |
312 | arch->unlock(this); | |
313 | ||
314 | workqueue->queue_next(new Add_archive_symbols(this->symtab_, | |
315 | this->layout_, | |
316 | this->input_objects_, | |
15f8229b ILT |
317 | this->dirpath_, |
318 | this->dirindex_, | |
89fc3421 | 319 | this->mapfile_, |
15f8229b | 320 | this->input_argument_, |
89fc3421 CC |
321 | arch, |
322 | this->input_group_, | |
323 | this->this_blocker_, | |
324 | this->next_blocker_)); | |
325 | return true; | |
326 | } | |
327 | } | |
328 | ||
329 | if (parameters->options().has_plugins()) | |
330 | { | |
331 | Pluginobj* obj = parameters->options().plugins()->claim_file(input_file, | |
332 | 0, filesize); | |
333 | if (obj != NULL) | |
334 | { | |
335 | // The input file was claimed by a plugin, and its symbols | |
336 | // have been provided by the plugin. | |
0f7c0701 CC |
337 | |
338 | // We are done with the file at this point, so unlock it. | |
339 | obj->unlock(this); | |
340 | ||
b0193076 RÁE |
341 | if (this->member_ != NULL) |
342 | { | |
343 | this->member_->sd_ = NULL; | |
344 | this->member_->obj_ = obj; | |
345 | return true; | |
346 | } | |
347 | ||
f488e4b0 CC |
348 | workqueue->queue_next(new Add_symbols(this->input_objects_, |
349 | this->symtab_, | |
350 | this->layout_, | |
15f8229b ILT |
351 | this->dirpath_, |
352 | this->dirindex_, | |
353 | this->mapfile_, | |
354 | this->input_argument_, | |
15f8229b ILT |
355 | obj, |
356 | NULL, | |
f488e4b0 CC |
357 | this->this_blocker_, |
358 | this->next_blocker_)); | |
89fc3421 CC |
359 | return true; |
360 | } | |
361 | } | |
362 | ||
f6060a4d | 363 | if (is_elf) |
bae7f79e | 364 | { |
f6060a4d | 365 | // This is an ELF object. |
a2fb1b05 | 366 | |
029ba973 ILT |
367 | bool unconfigured = false; |
368 | bool* punconfigured = (input_file->will_search_for() | |
369 | ? &unconfigured | |
370 | : NULL); | |
f6060a4d ILT |
371 | Object* obj = make_elf_object(input_file->filename(), |
372 | input_file, 0, ehdr, read_size, | |
029ba973 | 373 | punconfigured); |
f6060a4d ILT |
374 | if (obj == NULL) |
375 | { | |
029ba973 | 376 | if (unconfigured) |
15f8229b | 377 | { |
f6060a4d ILT |
378 | Read_symbols::incompatible_warning(this->input_argument_, |
379 | input_file); | |
380 | input_file->file().release(); | |
381 | input_file->file().unlock(this); | |
382 | delete input_file; | |
383 | ++this->dirindex_; | |
384 | return this->do_read_symbols(workqueue); | |
15f8229b | 385 | } |
f6060a4d ILT |
386 | return false; |
387 | } | |
dbe717ef | 388 | |
f6060a4d ILT |
389 | Read_symbols_data* sd = new Read_symbols_data; |
390 | obj->read_symbols(sd); | |
391 | ||
072fe7ce ILT |
392 | if (this->layout_->incremental_inputs()) |
393 | { | |
394 | const Input_argument* ia = this->input_argument_; | |
395 | this->layout_->incremental_inputs()->report_object(ia, obj); | |
396 | } | |
397 | ||
f6060a4d ILT |
398 | // Opening the file locked it, so now we need to unlock it. We |
399 | // need to unlock it before queuing the Add_symbols task, | |
400 | // because the workqueue doesn't know about our lock on the | |
401 | // file. If we queue the Add_symbols task first, it will be | |
402 | // stuck on the end of the file lock, but since the workqueue | |
403 | // doesn't know about that lock, it will never release the | |
404 | // Add_symbols task. | |
405 | ||
406 | input_file->file().unlock(this); | |
407 | ||
b0193076 RÁE |
408 | if (this->member_ != NULL) |
409 | { | |
410 | this->member_->sd_ = sd; | |
411 | this->member_->obj_ = obj; | |
412 | return true; | |
413 | } | |
414 | ||
f6060a4d ILT |
415 | // We use queue_next because everything is cached for this |
416 | // task to run right away if possible. | |
417 | ||
418 | workqueue->queue_next(new Add_symbols(this->input_objects_, | |
419 | this->symtab_, this->layout_, | |
420 | this->dirpath_, | |
421 | this->dirindex_, | |
422 | this->mapfile_, | |
423 | this->input_argument_, | |
f6060a4d ILT |
424 | obj, |
425 | sd, | |
426 | this->this_blocker_, | |
427 | this->next_blocker_)); | |
bae7f79e | 428 | |
f6060a4d | 429 | return true; |
bae7f79e ILT |
430 | } |
431 | ||
da769d56 ILT |
432 | // Queue up a task to try to parse this file as a script. We use a |
433 | // separate task so that the script will be read in order with other | |
434 | // objects named on the command line. Also so that we don't try to | |
435 | // read multiple scripts simultaneously, which could lead to | |
436 | // unpredictable changes to the General_options structure. | |
437 | ||
f1ed28fb | 438 | workqueue->queue_soon(new Read_script(this->symtab_, |
da769d56 ILT |
439 | this->layout_, |
440 | this->dirpath_, | |
15f8229b | 441 | this->dirindex_, |
da769d56 | 442 | this->input_objects_, |
7d9e3d98 | 443 | this->mapfile_, |
da769d56 ILT |
444 | this->input_group_, |
445 | this->input_argument_, | |
446 | input_file, | |
447 | this->this_blocker_, | |
448 | this->next_blocker_)); | |
449 | return true; | |
bae7f79e ILT |
450 | } |
451 | ||
ead1e424 ILT |
452 | // Handle a group. We need to walk through the arguments over and |
453 | // over until we don't see any new undefined symbols. We do this by | |
454 | // setting off Read_symbols Tasks as usual, but recording the archive | |
455 | // entries instead of deleting them. We also start a Finish_group | |
456 | // Task which runs after we've read all the symbols. In that task we | |
457 | // process the archives in a loop until we are done. | |
458 | ||
459 | void | |
460 | Read_symbols::do_group(Workqueue* workqueue) | |
461 | { | |
462 | Input_group* input_group = new Input_group(); | |
463 | ||
dbe717ef | 464 | const Input_file_group* group = this->input_argument_->group(); |
ead1e424 | 465 | Task_token* this_blocker = this->this_blocker_; |
17a1d0a9 | 466 | |
114dfbe1 ILT |
467 | Finish_group* finish_group = new Finish_group(this->input_objects_, |
468 | this->symtab_, | |
469 | this->layout_, | |
470 | this->mapfile_, | |
471 | input_group, | |
472 | this->next_blocker_); | |
473 | ||
474 | Task_token* next_blocker = new Task_token(true); | |
475 | next_blocker->add_blocker(); | |
476 | workqueue->queue_soon(new Start_group(this->symtab_, finish_group, | |
477 | this_blocker, next_blocker)); | |
478 | this_blocker = next_blocker; | |
479 | ||
ead1e424 ILT |
480 | for (Input_file_group::const_iterator p = group->begin(); |
481 | p != group->end(); | |
482 | ++p) | |
483 | { | |
dbe717ef | 484 | const Input_argument* arg = &*p; |
a3ad94ed | 485 | gold_assert(arg->is_file()); |
ead1e424 | 486 | |
114dfbe1 | 487 | next_blocker = new Task_token(true); |
ead1e424 | 488 | next_blocker->add_blocker(); |
f1ed28fb | 489 | workqueue->queue_soon(new Read_symbols(this->input_objects_, |
da769d56 | 490 | this->symtab_, this->layout_, |
15f8229b ILT |
491 | this->dirpath_, this->dirindex_, |
492 | this->mapfile_, arg, input_group, | |
b0193076 | 493 | NULL, this_blocker, next_blocker)); |
ead1e424 ILT |
494 | this_blocker = next_blocker; |
495 | } | |
496 | ||
114dfbe1 ILT |
497 | finish_group->set_blocker(this_blocker); |
498 | ||
499 | workqueue->queue_soon(finish_group); | |
ead1e424 ILT |
500 | } |
501 | ||
c7912668 ILT |
502 | // Return a debugging name for a Read_symbols task. |
503 | ||
504 | std::string | |
505 | Read_symbols::get_name() const | |
506 | { | |
b0193076 RÁE |
507 | if (this->input_argument_->is_group()) |
508 | { | |
509 | std::string ret("Read_symbols group ("); | |
510 | bool add_space = false; | |
511 | const Input_file_group* group = this->input_argument_->group(); | |
512 | for (Input_file_group::const_iterator p = group->begin(); | |
513 | p != group->end(); | |
514 | ++p) | |
515 | { | |
516 | if (add_space) | |
517 | ret += ' '; | |
518 | ret += p->file().name(); | |
519 | add_space = true; | |
520 | } | |
521 | return ret + ')'; | |
522 | } | |
523 | else if (this->input_argument_->is_lib()) | |
524 | { | |
525 | std::string ret("Read_symbols lib ("); | |
526 | bool add_space = false; | |
527 | const Input_file_lib* lib = this->input_argument_->lib(); | |
528 | for (Input_file_lib::const_iterator p = lib->begin(); | |
529 | p != lib->end(); | |
530 | ++p) | |
531 | { | |
532 | if (add_space) | |
533 | ret += ' '; | |
534 | ret += p->file().name(); | |
535 | add_space = true; | |
536 | } | |
537 | return ret + ')'; | |
538 | } | |
539 | else | |
c7912668 ILT |
540 | { |
541 | std::string ret("Read_symbols "); | |
542 | if (this->input_argument_->file().is_lib()) | |
543 | ret += "-l"; | |
ae3b5189 CD |
544 | else if (this->input_argument_->file().is_searched_file()) |
545 | ret += "-l:"; | |
c7912668 ILT |
546 | ret += this->input_argument_->file().name(); |
547 | return ret; | |
548 | } | |
c7912668 ILT |
549 | } |
550 | ||
bae7f79e ILT |
551 | // Class Add_symbols. |
552 | ||
553 | Add_symbols::~Add_symbols() | |
554 | { | |
555 | if (this->this_blocker_ != NULL) | |
556 | delete this->this_blocker_; | |
557 | // next_blocker_ is deleted by the task associated with the next | |
558 | // input file. | |
559 | } | |
560 | ||
a2fb1b05 ILT |
561 | // We are blocked by this_blocker_. We block next_blocker_. We also |
562 | // lock the file. | |
bae7f79e | 563 | |
17a1d0a9 ILT |
564 | Task_token* |
565 | Add_symbols::is_runnable() | |
bae7f79e ILT |
566 | { |
567 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 | 568 | return this->this_blocker_; |
a2fb1b05 | 569 | if (this->object_->is_locked()) |
17a1d0a9 ILT |
570 | return this->object_->token(); |
571 | return NULL; | |
bae7f79e ILT |
572 | } |
573 | ||
17a1d0a9 ILT |
574 | void |
575 | Add_symbols::locks(Task_locker* tl) | |
bae7f79e | 576 | { |
17a1d0a9 ILT |
577 | tl->add(this, this->next_blocker_); |
578 | tl->add(this, this->object_->token()); | |
bae7f79e ILT |
579 | } |
580 | ||
ead1e424 ILT |
581 | // Add the symbols in the object to the symbol table. |
582 | ||
bae7f79e | 583 | void |
029ba973 | 584 | Add_symbols::run(Workqueue*) |
bae7f79e | 585 | { |
f488e4b0 CC |
586 | Pluginobj* pluginobj = this->object_->pluginobj(); |
587 | if (pluginobj != NULL) | |
588 | { | |
589 | this->object_->add_symbols(this->symtab_, this->sd_, this->layout_); | |
590 | return; | |
591 | } | |
592 | ||
029ba973 | 593 | if (!this->input_objects_->add_object(this->object_)) |
15f8229b | 594 | { |
a2a5469e CC |
595 | delete this->sd_; |
596 | this->sd_ = NULL; | |
15f8229b | 597 | this->object_->release(); |
008db82e ILT |
598 | delete this->object_; |
599 | } | |
600 | else | |
601 | { | |
7e1edb90 | 602 | this->object_->layout(this->symtab_, this->layout_, this->sd_); |
f488e4b0 | 603 | this->object_->add_symbols(this->symtab_, this->sd_, this->layout_); |
a2a5469e CC |
604 | delete this->sd_; |
605 | this->sd_ = NULL; | |
17a1d0a9 | 606 | this->object_->release(); |
008db82e | 607 | } |
bae7f79e ILT |
608 | } |
609 | ||
114dfbe1 ILT |
610 | // Class Start_group. |
611 | ||
612 | Start_group::~Start_group() | |
613 | { | |
614 | if (this->this_blocker_ != NULL) | |
615 | delete this->this_blocker_; | |
616 | // next_blocker_ is deleted by the task associated with the first | |
617 | // file in the group. | |
618 | } | |
619 | ||
620 | // We need to wait for THIS_BLOCKER_ and unblock NEXT_BLOCKER_. | |
621 | ||
622 | Task_token* | |
623 | Start_group::is_runnable() | |
624 | { | |
625 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
626 | return this->this_blocker_; | |
627 | return NULL; | |
628 | } | |
629 | ||
630 | void | |
631 | Start_group::locks(Task_locker* tl) | |
632 | { | |
633 | tl->add(this, this->next_blocker_); | |
634 | } | |
635 | ||
636 | // Store the number of undefined symbols we see now. | |
637 | ||
638 | void | |
639 | Start_group::run(Workqueue*) | |
640 | { | |
641 | this->finish_group_->set_saw_undefined(this->symtab_->saw_undefined()); | |
642 | } | |
643 | ||
ead1e424 ILT |
644 | // Class Finish_group. |
645 | ||
646 | Finish_group::~Finish_group() | |
647 | { | |
648 | if (this->this_blocker_ != NULL) | |
649 | delete this->this_blocker_; | |
650 | // next_blocker_ is deleted by the task associated with the next | |
651 | // input file following the group. | |
652 | } | |
653 | ||
654 | // We need to wait for THIS_BLOCKER_ and unblock NEXT_BLOCKER_. | |
655 | ||
17a1d0a9 ILT |
656 | Task_token* |
657 | Finish_group::is_runnable() | |
ead1e424 ILT |
658 | { |
659 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 ILT |
660 | return this->this_blocker_; |
661 | return NULL; | |
ead1e424 ILT |
662 | } |
663 | ||
17a1d0a9 ILT |
664 | void |
665 | Finish_group::locks(Task_locker* tl) | |
ead1e424 | 666 | { |
17a1d0a9 | 667 | tl->add(this, this->next_blocker_); |
ead1e424 ILT |
668 | } |
669 | ||
670 | // Loop over the archives until there are no new undefined symbols. | |
671 | ||
672 | void | |
673 | Finish_group::run(Workqueue*) | |
674 | { | |
114dfbe1 | 675 | size_t saw_undefined = this->saw_undefined_; |
ead1e424 ILT |
676 | while (saw_undefined != this->symtab_->saw_undefined()) |
677 | { | |
678 | saw_undefined = this->symtab_->saw_undefined(); | |
679 | ||
680 | for (Input_group::const_iterator p = this->input_group_->begin(); | |
681 | p != this->input_group_->end(); | |
682 | ++p) | |
683 | { | |
17a1d0a9 | 684 | Task_lock_obj<Archive> tl(this, *p); |
ead1e424 | 685 | |
7e1edb90 | 686 | (*p)->add_symbols(this->symtab_, this->layout_, |
7d9e3d98 | 687 | this->input_objects_, this->mapfile_); |
ead1e424 ILT |
688 | } |
689 | } | |
690 | ||
691 | // Delete all the archives now that we no longer need them. | |
692 | for (Input_group::const_iterator p = this->input_group_->begin(); | |
693 | p != this->input_group_->end(); | |
694 | ++p) | |
695 | delete *p; | |
696 | delete this->input_group_; | |
697 | } | |
698 | ||
da769d56 ILT |
699 | // Class Read_script |
700 | ||
701 | Read_script::~Read_script() | |
702 | { | |
703 | if (this->this_blocker_ != NULL) | |
704 | delete this->this_blocker_; | |
705 | // next_blocker_ is deleted by the task associated with the next | |
706 | // input file. | |
707 | } | |
708 | ||
709 | // We are blocked by this_blocker_. | |
710 | ||
711 | Task_token* | |
712 | Read_script::is_runnable() | |
713 | { | |
714 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
715 | return this->this_blocker_; | |
716 | return NULL; | |
717 | } | |
718 | ||
719 | // We don't unlock next_blocker_ here. If the script names any input | |
720 | // files, then the last file will be responsible for unlocking it. | |
721 | ||
722 | void | |
723 | Read_script::locks(Task_locker*) | |
724 | { | |
725 | } | |
726 | ||
727 | // Read the script, if it is a script. | |
728 | ||
729 | void | |
730 | Read_script::run(Workqueue* workqueue) | |
731 | { | |
732 | bool used_next_blocker; | |
f1ed28fb | 733 | if (!read_input_script(workqueue, this->symtab_, this->layout_, |
15f8229b | 734 | this->dirpath_, this->dirindex_, this->input_objects_, |
7d9e3d98 ILT |
735 | this->mapfile_, this->input_group_, |
736 | this->input_argument_, this->input_file_, | |
737 | this->next_blocker_, &used_next_blocker)) | |
da769d56 ILT |
738 | { |
739 | // Here we have to handle any other input file types we need. | |
740 | gold_error(_("%s: not an object or archive"), | |
741 | this->input_file_->file().filename().c_str()); | |
742 | } | |
743 | ||
744 | if (!used_next_blocker) | |
745 | { | |
746 | // Queue up a task to unlock next_blocker. We can't just unlock | |
747 | // it here, as we don't hold the workqueue lock. | |
748 | workqueue->queue_soon(new Unblock_token(NULL, this->next_blocker_)); | |
749 | } | |
750 | } | |
751 | ||
752 | // Return a debugging name for a Read_script task. | |
753 | ||
754 | std::string | |
755 | Read_script::get_name() const | |
756 | { | |
757 | std::string ret("Read_script "); | |
758 | if (this->input_argument_->file().is_lib()) | |
759 | ret += "-l"; | |
ae3b5189 CD |
760 | else if (this->input_argument_->file().is_searched_file()) |
761 | ret += "-l:"; | |
da769d56 ILT |
762 | ret += this->input_argument_->file().name(); |
763 | return ret; | |
764 | } | |
765 | ||
bae7f79e | 766 | } // End namespace gold. |