Commit | Line | Data |
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6d03d481 | 1 | // plugin.cc -- plugin manager for gold -*- C++ -*- |
89fc3421 | 2 | |
219d1afa | 3 | // Copyright (C) 2008-2018 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 | ||
291158a3 | 25 | #include <cerrno> |
89fc3421 CC |
26 | #include <cstdio> |
27 | #include <cstdarg> | |
28 | #include <cstring> | |
29 | #include <string> | |
30 | #include <vector> | |
291158a3 CC |
31 | #include <fcntl.h> |
32 | #include <unistd.h> | |
33 | #include "libiberty.h" | |
bc06c745 ILT |
34 | |
35 | #ifdef ENABLE_PLUGINS | |
0bf402d5 | 36 | #ifdef HAVE_DLFCN_H |
89fc3421 | 37 | #include <dlfcn.h> |
0bf402d5 ILT |
38 | #elif defined (HAVE_WINDOWS_H) |
39 | #include <windows.h> | |
40 | #else | |
41 | #error Unknown how to handle dynamic-load-libraries. | |
bc06c745 | 42 | #endif |
89fc3421 | 43 | |
0bf402d5 ILT |
44 | #if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) |
45 | ||
46 | #define RTLD_NOW 0 /* Dummy value. */ | |
47 | static void * | |
48 | dlopen(const char *file, int mode ATTRIBUTE_UNUSED) | |
49 | { | |
50 | return LoadLibrary(file); | |
51 | } | |
52 | ||
53 | static void * | |
54 | dlsym(void *handle, const char *name) | |
55 | { | |
56 | return reinterpret_cast<void *>( | |
57 | GetProcAddress(static_cast<HMODULE>(handle),name)); | |
58 | } | |
59 | ||
60 | static const char * | |
61 | dlerror(void) | |
62 | { | |
63 | return "unable to load dll"; | |
64 | } | |
65 | ||
66 | #endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */ | |
67 | #endif /* ENABLE_PLUGINS */ | |
68 | ||
89fc3421 | 69 | #include "parameters.h" |
291158a3 | 70 | #include "debug.h" |
89fc3421 CC |
71 | #include "errors.h" |
72 | #include "fileread.h" | |
73 | #include "layout.h" | |
74 | #include "options.h" | |
75 | #include "plugin.h" | |
76 | #include "target.h" | |
77 | #include "readsyms.h" | |
78 | #include "symtab.h" | |
20e2a8aa | 79 | #include "descriptors.h" |
89fc3421 CC |
80 | #include "elfcpp.h" |
81 | ||
82 | namespace gold | |
83 | { | |
84 | ||
85 | #ifdef ENABLE_PLUGINS | |
86 | ||
87 | // The linker's exported interfaces. | |
88 | ||
89 | extern "C" | |
90 | { | |
91 | ||
92 | static enum ld_plugin_status | |
93 | register_claim_file(ld_plugin_claim_file_handler handler); | |
94 | ||
95 | static enum ld_plugin_status | |
96 | register_all_symbols_read(ld_plugin_all_symbols_read_handler handler); | |
97 | ||
98 | static enum ld_plugin_status | |
99 | register_cleanup(ld_plugin_cleanup_handler handler); | |
100 | ||
101 | static enum ld_plugin_status | |
102 | add_symbols(void *handle, int nsyms, const struct ld_plugin_symbol *syms); | |
103 | ||
0f7c0701 CC |
104 | static enum ld_plugin_status |
105 | get_input_file(const void *handle, struct ld_plugin_input_file *file); | |
106 | ||
9c793f14 RÁE |
107 | static enum ld_plugin_status |
108 | get_view(const void *handle, const void **viewp); | |
109 | ||
0f7c0701 CC |
110 | static enum ld_plugin_status |
111 | release_input_file(const void *handle); | |
112 | ||
89fc3421 CC |
113 | static enum ld_plugin_status |
114 | get_symbols(const void *handle, int nsyms, struct ld_plugin_symbol *syms); | |
115 | ||
235061c2 CC |
116 | static enum ld_plugin_status |
117 | get_symbols_v2(const void *handle, int nsyms, struct ld_plugin_symbol *syms); | |
118 | ||
95ecdfbf ES |
119 | static enum ld_plugin_status |
120 | get_symbols_v3(const void *handle, int nsyms, struct ld_plugin_symbol *syms); | |
121 | ||
89fc3421 | 122 | static enum ld_plugin_status |
6508b958 | 123 | add_input_file(const char *pathname); |
89fc3421 | 124 | |
e99daf92 | 125 | static enum ld_plugin_status |
6508b958 | 126 | add_input_library(const char *pathname); |
e99daf92 | 127 | |
42218b9f RÁE |
128 | static enum ld_plugin_status |
129 | set_extra_library_path(const char *path); | |
130 | ||
89fc3421 | 131 | static enum ld_plugin_status |
6c52134c | 132 | message(int level, const char *format, ...); |
89fc3421 | 133 | |
e9552f7e ST |
134 | static enum ld_plugin_status |
135 | get_input_section_count(const void* handle, unsigned int* count); | |
136 | ||
137 | static enum ld_plugin_status | |
138 | get_input_section_type(const struct ld_plugin_section section, | |
139 | unsigned int* type); | |
140 | ||
141 | static enum ld_plugin_status | |
142 | get_input_section_name(const struct ld_plugin_section section, | |
143 | char** section_name_ptr); | |
144 | ||
145 | static enum ld_plugin_status | |
146 | get_input_section_contents(const struct ld_plugin_section section, | |
147 | const unsigned char** section_contents, | |
148 | size_t* len); | |
149 | ||
150 | static enum ld_plugin_status | |
151 | update_section_order(const struct ld_plugin_section *section_list, | |
152 | unsigned int num_sections); | |
153 | ||
154 | static enum ld_plugin_status | |
155 | allow_section_ordering(); | |
156 | ||
16164a6b ST |
157 | static enum ld_plugin_status |
158 | allow_unique_segment_for_sections(); | |
159 | ||
160 | static enum ld_plugin_status | |
161 | unique_segment_for_sections(const char* segment_name, | |
162 | uint64_t flags, | |
163 | uint64_t align, | |
164 | const struct ld_plugin_section *section_list, | |
165 | unsigned int num_sections); | |
82838bd6 CC |
166 | |
167 | static enum ld_plugin_status | |
168 | get_input_section_alignment(const struct ld_plugin_section section, | |
169 | unsigned int* addralign); | |
170 | ||
171 | static enum ld_plugin_status | |
172 | get_input_section_size(const struct ld_plugin_section section, | |
173 | uint64_t* secsize); | |
174 | ||
c4e64843 SC |
175 | static enum ld_plugin_status |
176 | register_new_input(ld_plugin_new_input_handler handler); | |
177 | ||
0b65c07b ST |
178 | static enum ld_plugin_status |
179 | get_wrap_symbols(uint64_t *num_symbols, const char ***wrap_symbol_list); | |
180 | ||
89fc3421 CC |
181 | }; |
182 | ||
183 | #endif // ENABLE_PLUGINS | |
184 | ||
291158a3 CC |
185 | static Pluginobj* make_sized_plugin_object(const std::string& filename, |
186 | Input_file* input_file, | |
0f7c0701 | 187 | off_t offset, off_t filesize); |
89fc3421 CC |
188 | |
189 | // Plugin methods. | |
190 | ||
191 | // Load one plugin library. | |
192 | ||
193 | void | |
194 | Plugin::load() | |
195 | { | |
196 | #ifdef ENABLE_PLUGINS | |
89fc3421 CC |
197 | // Load the plugin library. |
198 | // FIXME: Look for the library in standard locations. | |
4674ecfc | 199 | this->handle_ = dlopen(this->filename_.c_str(), RTLD_NOW); |
89fc3421 CC |
200 | if (this->handle_ == NULL) |
201 | { | |
4802450a RÁE |
202 | gold_error(_("%s: could not load plugin library: %s"), |
203 | this->filename_.c_str(), dlerror()); | |
89fc3421 CC |
204 | return; |
205 | } | |
206 | ||
207 | // Find the plugin's onload entry point. | |
b59befec ILT |
208 | void* ptr = dlsym(this->handle_, "onload"); |
209 | if (ptr == NULL) | |
89fc3421 | 210 | { |
4674ecfc CC |
211 | gold_error(_("%s: could not find onload entry point"), |
212 | this->filename_.c_str()); | |
89fc3421 CC |
213 | return; |
214 | } | |
b59befec ILT |
215 | ld_plugin_onload onload; |
216 | gold_assert(sizeof(onload) == sizeof(ptr)); | |
217 | memcpy(&onload, &ptr, sizeof(ptr)); | |
89fc3421 CC |
218 | |
219 | // Get the linker's version number. | |
220 | const char* ver = get_version_string(); | |
221 | int major = 0; | |
222 | int minor = 0; | |
223 | sscanf(ver, "%d.%d", &major, &minor); | |
224 | ||
225 | // Allocate and populate a transfer vector. | |
0b65c07b | 226 | const int tv_fixed_size = 31; |
e9552f7e | 227 | |
4674ecfc | 228 | int tv_size = this->args_.size() + tv_fixed_size; |
ca09d69a | 229 | ld_plugin_tv* tv = new ld_plugin_tv[tv_size]; |
89fc3421 | 230 | |
abc8dcba CC |
231 | // Put LDPT_MESSAGE at the front of the list so the plugin can use it |
232 | // while processing subsequent entries. | |
89fc3421 | 233 | int i = 0; |
abc8dcba CC |
234 | tv[i].tv_tag = LDPT_MESSAGE; |
235 | tv[i].tv_u.tv_message = message; | |
236 | ||
237 | ++i; | |
89fc3421 CC |
238 | tv[i].tv_tag = LDPT_API_VERSION; |
239 | tv[i].tv_u.tv_val = LD_PLUGIN_API_VERSION; | |
240 | ||
241 | ++i; | |
242 | tv[i].tv_tag = LDPT_GOLD_VERSION; | |
243 | tv[i].tv_u.tv_val = major * 100 + minor; | |
244 | ||
245 | ++i; | |
246 | tv[i].tv_tag = LDPT_LINKER_OUTPUT; | |
247 | if (parameters->options().relocatable()) | |
248 | tv[i].tv_u.tv_val = LDPO_REL; | |
249 | else if (parameters->options().shared()) | |
250 | tv[i].tv_u.tv_val = LDPO_DYN; | |
370e30b6 RÁE |
251 | else if (parameters->options().pie()) |
252 | tv[i].tv_u.tv_val = LDPO_PIE; | |
89fc3421 CC |
253 | else |
254 | tv[i].tv_u.tv_val = LDPO_EXEC; | |
255 | ||
3537c84b RÁE |
256 | ++i; |
257 | tv[i].tv_tag = LDPT_OUTPUT_NAME; | |
258 | tv[i].tv_u.tv_string = parameters->options().output(); | |
259 | ||
4674ecfc | 260 | for (unsigned int j = 0; j < this->args_.size(); ++j) |
89fc3421 CC |
261 | { |
262 | ++i; | |
263 | tv[i].tv_tag = LDPT_OPTION; | |
4674ecfc | 264 | tv[i].tv_u.tv_string = this->args_[j].c_str(); |
89fc3421 CC |
265 | } |
266 | ||
267 | ++i; | |
268 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
269 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
270 | ||
271 | ++i; | |
272 | tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK; | |
273 | tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read; | |
274 | ||
275 | ++i; | |
276 | tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK; | |
277 | tv[i].tv_u.tv_register_cleanup = register_cleanup; | |
278 | ||
279 | ++i; | |
280 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
281 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
282 | ||
0f7c0701 CC |
283 | ++i; |
284 | tv[i].tv_tag = LDPT_GET_INPUT_FILE; | |
285 | tv[i].tv_u.tv_get_input_file = get_input_file; | |
286 | ||
9c793f14 RÁE |
287 | ++i; |
288 | tv[i].tv_tag = LDPT_GET_VIEW; | |
289 | tv[i].tv_u.tv_get_view = get_view; | |
290 | ||
0f7c0701 CC |
291 | ++i; |
292 | tv[i].tv_tag = LDPT_RELEASE_INPUT_FILE; | |
293 | tv[i].tv_u.tv_release_input_file = release_input_file; | |
294 | ||
89fc3421 CC |
295 | ++i; |
296 | tv[i].tv_tag = LDPT_GET_SYMBOLS; | |
297 | tv[i].tv_u.tv_get_symbols = get_symbols; | |
298 | ||
235061c2 CC |
299 | ++i; |
300 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V2; | |
301 | tv[i].tv_u.tv_get_symbols = get_symbols_v2; | |
302 | ||
95ecdfbf ES |
303 | ++i; |
304 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V3; | |
305 | tv[i].tv_u.tv_get_symbols = get_symbols_v3; | |
306 | ||
89fc3421 CC |
307 | ++i; |
308 | tv[i].tv_tag = LDPT_ADD_INPUT_FILE; | |
309 | tv[i].tv_u.tv_add_input_file = add_input_file; | |
310 | ||
e99daf92 ILT |
311 | ++i; |
312 | tv[i].tv_tag = LDPT_ADD_INPUT_LIBRARY; | |
313 | tv[i].tv_u.tv_add_input_library = add_input_library; | |
314 | ||
42218b9f RÁE |
315 | ++i; |
316 | tv[i].tv_tag = LDPT_SET_EXTRA_LIBRARY_PATH; | |
317 | tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path; | |
318 | ||
e9552f7e ST |
319 | ++i; |
320 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_COUNT; | |
321 | tv[i].tv_u.tv_get_input_section_count = get_input_section_count; | |
322 | ||
323 | ++i; | |
324 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_TYPE; | |
325 | tv[i].tv_u.tv_get_input_section_type = get_input_section_type; | |
326 | ||
327 | ++i; | |
328 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_NAME; | |
329 | tv[i].tv_u.tv_get_input_section_name = get_input_section_name; | |
330 | ||
331 | ++i; | |
332 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_CONTENTS; | |
333 | tv[i].tv_u.tv_get_input_section_contents = get_input_section_contents; | |
334 | ||
335 | ++i; | |
336 | tv[i].tv_tag = LDPT_UPDATE_SECTION_ORDER; | |
337 | tv[i].tv_u.tv_update_section_order = update_section_order; | |
338 | ||
339 | ++i; | |
340 | tv[i].tv_tag = LDPT_ALLOW_SECTION_ORDERING; | |
341 | tv[i].tv_u.tv_allow_section_ordering = allow_section_ordering; | |
342 | ||
16164a6b ST |
343 | ++i; |
344 | tv[i].tv_tag = LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS; | |
345 | tv[i].tv_u.tv_allow_unique_segment_for_sections | |
346 | = allow_unique_segment_for_sections; | |
347 | ||
348 | ++i; | |
349 | tv[i].tv_tag = LDPT_UNIQUE_SEGMENT_FOR_SECTIONS; | |
350 | tv[i].tv_u.tv_unique_segment_for_sections = unique_segment_for_sections; | |
351 | ||
82838bd6 CC |
352 | ++i; |
353 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_ALIGNMENT; | |
354 | tv[i].tv_u.tv_get_input_section_alignment = get_input_section_alignment; | |
355 | ||
356 | ++i; | |
357 | tv[i].tv_tag = LDPT_GET_INPUT_SECTION_SIZE; | |
358 | tv[i].tv_u.tv_get_input_section_size = get_input_section_size; | |
359 | ||
c4e64843 SC |
360 | ++i; |
361 | tv[i].tv_tag = LDPT_REGISTER_NEW_INPUT_HOOK; | |
362 | tv[i].tv_u.tv_register_new_input = register_new_input; | |
363 | ||
0b65c07b ST |
364 | ++i; |
365 | tv[i].tv_tag = LDPT_GET_WRAP_SYMBOLS; | |
366 | tv[i].tv_u.tv_get_wrap_symbols = get_wrap_symbols; | |
367 | ||
89fc3421 CC |
368 | ++i; |
369 | tv[i].tv_tag = LDPT_NULL; | |
370 | tv[i].tv_u.tv_val = 0; | |
371 | ||
372 | gold_assert(i == tv_size - 1); | |
373 | ||
374 | // Call the onload entry point. | |
375 | (*onload)(tv); | |
376 | ||
6c52134c | 377 | delete[] tv; |
89fc3421 CC |
378 | #endif // ENABLE_PLUGINS |
379 | } | |
380 | ||
381 | // Call the plugin claim-file handler. | |
382 | ||
383 | inline bool | |
ca09d69a | 384 | Plugin::claim_file(struct ld_plugin_input_file* plugin_input_file) |
89fc3421 CC |
385 | { |
386 | int claimed = 0; | |
387 | ||
388 | if (this->claim_file_handler_ != NULL) | |
389 | { | |
390 | (*this->claim_file_handler_)(plugin_input_file, &claimed); | |
391 | if (claimed) | |
392 | return true; | |
393 | } | |
394 | return false; | |
395 | } | |
396 | ||
397 | // Call the all-symbols-read handler. | |
398 | ||
399 | inline void | |
400 | Plugin::all_symbols_read() | |
401 | { | |
402 | if (this->all_symbols_read_handler_ != NULL) | |
403 | (*this->all_symbols_read_handler_)(); | |
404 | } | |
405 | ||
c4e64843 SC |
406 | // Call the new_input handler. |
407 | ||
408 | inline void | |
409 | Plugin::new_input(struct ld_plugin_input_file* plugin_input_file) | |
410 | { | |
411 | if (this->new_input_handler_ != NULL) | |
412 | (*this->new_input_handler_)(plugin_input_file); | |
413 | } | |
414 | ||
89fc3421 CC |
415 | // Call the cleanup handler. |
416 | ||
417 | inline void | |
418 | Plugin::cleanup() | |
419 | { | |
40f36857 CC |
420 | if (this->cleanup_handler_ != NULL && !this->cleanup_done_) |
421 | { | |
422 | // Set this flag before calling to prevent a recursive plunge | |
423 | // in the event that a plugin's cleanup handler issues a | |
424 | // fatal error. | |
425 | this->cleanup_done_ = true; | |
426 | (*this->cleanup_handler_)(); | |
427 | } | |
89fc3421 CC |
428 | } |
429 | ||
0f3b89d8 ILT |
430 | // This task is used to rescan archives as needed. |
431 | ||
432 | class Plugin_rescan : public Task | |
433 | { | |
434 | public: | |
435 | Plugin_rescan(Task_token* this_blocker, Task_token* next_blocker) | |
436 | : this_blocker_(this_blocker), next_blocker_(next_blocker) | |
437 | { } | |
438 | ||
439 | ~Plugin_rescan() | |
440 | { | |
441 | delete this->this_blocker_; | |
442 | } | |
443 | ||
444 | Task_token* | |
445 | is_runnable() | |
446 | { | |
447 | if (this->this_blocker_->is_blocked()) | |
448 | return this->this_blocker_; | |
449 | return NULL; | |
450 | } | |
451 | ||
452 | void | |
453 | locks(Task_locker* tl) | |
454 | { tl->add(this, this->next_blocker_); } | |
455 | ||
456 | void | |
457 | run(Workqueue*) | |
458 | { parameters->options().plugins()->rescan(this); } | |
459 | ||
460 | std::string | |
461 | get_name() const | |
462 | { return "Plugin_rescan"; } | |
463 | ||
464 | private: | |
465 | Task_token* this_blocker_; | |
466 | Task_token* next_blocker_; | |
467 | }; | |
468 | ||
291158a3 CC |
469 | // Plugin_recorder logs plugin actions and saves intermediate files |
470 | // for later replay. | |
471 | ||
472 | class Plugin_recorder | |
473 | { | |
474 | public: | |
475 | Plugin_recorder() : file_count_(0), tempdir_(NULL), logfile_(NULL) | |
476 | { } | |
477 | ||
478 | bool | |
479 | init(); | |
480 | ||
481 | void | |
482 | claimed_file(const std::string& obj_name, off_t offset, off_t filesize, | |
483 | const std::string& plugin_name); | |
484 | ||
485 | void | |
486 | unclaimed_file(const std::string& obj_name, off_t offset, off_t filesize); | |
487 | ||
488 | void | |
489 | replacement_file(const char* name, bool is_lib); | |
490 | ||
491 | void | |
492 | record_symbols(const Object* obj, int nsyms, | |
493 | const struct ld_plugin_symbol* syms); | |
494 | ||
495 | void | |
496 | finish() | |
497 | { ::fclose(this->logfile_); } | |
498 | ||
499 | private: | |
500 | unsigned int file_count_; | |
501 | const char* tempdir_; | |
502 | FILE* logfile_; | |
503 | }; | |
504 | ||
505 | bool | |
506 | Plugin_recorder::init() | |
507 | { | |
508 | // Create a temporary directory where we can stash the log and | |
509 | // copies of replacement files. | |
510 | char dir_template[] = "gold-recording-XXXXXX"; | |
511 | if (mkdtemp(dir_template) == NULL) | |
512 | return false; | |
513 | ||
514 | size_t len = strlen(dir_template) + 1; | |
515 | char* tempdir = new char[len]; | |
516 | strncpy(tempdir, dir_template, len); | |
517 | ||
518 | // Create the log file. | |
519 | std::string logname(tempdir); | |
520 | logname.append("/log"); | |
521 | FILE* logfile = ::fopen(logname.c_str(), "w"); | |
522 | if (logfile == NULL) | |
523 | return false; | |
524 | ||
525 | this->tempdir_ = tempdir; | |
526 | this->logfile_ = logfile; | |
527 | ||
528 | gold_info(_("%s: recording to %s"), program_name, this->tempdir_); | |
529 | ||
530 | return true; | |
531 | } | |
532 | ||
533 | void | |
534 | Plugin_recorder::claimed_file(const std::string& obj_name, | |
535 | off_t offset, | |
536 | off_t filesize, | |
537 | const std::string& plugin_name) | |
538 | { | |
539 | fprintf(this->logfile_, "PLUGIN: %s\n", plugin_name.c_str()); | |
540 | fprintf(this->logfile_, "CLAIMED: %s", obj_name.c_str()); | |
541 | if (offset > 0) | |
542 | fprintf(this->logfile_, " @%ld", static_cast<long>(offset)); | |
543 | fprintf(this->logfile_, " %ld\n", static_cast<long>(filesize)); | |
544 | } | |
545 | ||
546 | void | |
547 | Plugin_recorder::unclaimed_file(const std::string& obj_name, | |
548 | off_t offset, | |
549 | off_t filesize) | |
550 | { | |
551 | fprintf(this->logfile_, "UNCLAIMED: %s", obj_name.c_str()); | |
552 | if (offset > 0) | |
553 | fprintf(this->logfile_, " @%ld", static_cast<long>(offset)); | |
554 | fprintf(this->logfile_, " %ld\n", static_cast<long>(filesize)); | |
555 | } | |
556 | ||
557 | // Make a hard link to INNAME from OUTNAME, if possible. | |
558 | // If not, copy the file. | |
559 | ||
560 | static bool | |
561 | link_or_copy_file(const char* inname, const char* outname) | |
562 | { | |
563 | static char buf[4096]; | |
564 | ||
565 | if (::link(inname, outname) == 0) | |
566 | return true; | |
567 | ||
568 | int in = ::open(inname, O_RDONLY); | |
569 | if (in < 0) | |
570 | { | |
8da9a904 | 571 | gold_warning(_("%s: can't open (%s)"), inname, strerror(errno)); |
291158a3 CC |
572 | return false; |
573 | } | |
574 | int out = ::open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0600); | |
575 | if (out < 0) | |
576 | { | |
8da9a904 | 577 | gold_warning(_("%s: can't create (%s)"), outname, strerror(errno)); |
291158a3 CC |
578 | ::close(in); |
579 | return false; | |
580 | } | |
581 | ssize_t len; | |
582 | while ((len = ::read(in, buf, sizeof(buf))) > 0) | |
8da9a904 CC |
583 | { |
584 | if (::write(out, buf, len) != len) | |
585 | { | |
586 | gold_warning(_("%s: write error while making copy of file (%s)"), | |
587 | inname, strerror(errno)); | |
588 | break; | |
589 | } | |
590 | } | |
291158a3 CC |
591 | ::close(in); |
592 | ::close(out); | |
593 | return true; | |
594 | } | |
595 | ||
596 | void | |
597 | Plugin_recorder::replacement_file(const char* name, bool is_lib) | |
598 | { | |
599 | fprintf(this->logfile_, "REPLACEMENT: %s", name); | |
600 | if (is_lib) | |
601 | fprintf(this->logfile_, "(lib)"); | |
602 | else | |
603 | { | |
604 | char counter[10]; | |
605 | const char* basename = lbasename(name); | |
606 | snprintf(counter, sizeof(counter), "%05d", this->file_count_); | |
607 | ++this->file_count_; | |
608 | std::string outname(this->tempdir_); | |
609 | outname.append("/"); | |
610 | outname.append(counter); | |
611 | outname.append("-"); | |
612 | outname.append(basename); | |
613 | if (link_or_copy_file(name, outname.c_str())) | |
614 | fprintf(this->logfile_, " -> %s", outname.c_str()); | |
615 | } | |
616 | fprintf(this->logfile_, "\n"); | |
617 | } | |
618 | ||
619 | void | |
620 | Plugin_recorder::record_symbols(const Object* obj, int nsyms, | |
621 | const struct ld_plugin_symbol* syms) | |
622 | { | |
623 | fprintf(this->logfile_, "SYMBOLS: %d %s\n", nsyms, obj->name().c_str()); | |
624 | for (int i = 0; i < nsyms; ++i) | |
625 | { | |
626 | const struct ld_plugin_symbol* isym = &syms[i]; | |
627 | ||
628 | const char* def; | |
629 | switch (isym->def) | |
630 | { | |
631 | case LDPK_DEF: | |
632 | def = "D"; | |
633 | break; | |
634 | case LDPK_WEAKDEF: | |
635 | def = "WD"; | |
636 | break; | |
637 | case LDPK_UNDEF: | |
638 | def = "U"; | |
639 | break; | |
640 | case LDPK_WEAKUNDEF: | |
641 | def = "WU"; | |
642 | break; | |
643 | case LDPK_COMMON: | |
644 | def = "C"; | |
645 | break; | |
646 | default: | |
647 | def = "?"; | |
648 | break; | |
649 | } | |
650 | ||
651 | char vis; | |
652 | switch (isym->visibility) | |
653 | { | |
654 | case LDPV_PROTECTED: | |
655 | vis = 'P'; | |
656 | break; | |
657 | case LDPV_INTERNAL: | |
658 | vis = 'I'; | |
659 | break; | |
660 | case LDPV_HIDDEN: | |
661 | vis = 'H'; | |
662 | break; | |
663 | case LDPV_DEFAULT: | |
664 | vis = 'D'; | |
665 | break; | |
666 | default: | |
667 | vis = '?'; | |
668 | break; | |
669 | } | |
670 | ||
671 | fprintf(this->logfile_, " %5d: %-2s %c %s", i, def, vis, isym->name); | |
672 | if (isym->version != NULL && isym->version[0] != '\0') | |
673 | fprintf(this->logfile_, "@%s", isym->version); | |
674 | if (isym->comdat_key != NULL && isym->comdat_key[0] != '\0') | |
675 | { | |
676 | if (strcmp(isym->name, isym->comdat_key) == 0) | |
677 | fprintf(this->logfile_, " [comdat]"); | |
678 | else | |
679 | fprintf(this->logfile_, " [comdat: %s]", isym->comdat_key); | |
680 | } | |
681 | fprintf(this->logfile_, "\n"); | |
682 | } | |
683 | } | |
684 | ||
89fc3421 CC |
685 | // Plugin_manager methods. |
686 | ||
687 | Plugin_manager::~Plugin_manager() | |
688 | { | |
689 | for (Plugin_list::iterator p = this->plugins_.begin(); | |
690 | p != this->plugins_.end(); | |
691 | ++p) | |
692 | delete *p; | |
693 | this->plugins_.clear(); | |
694 | for (Object_list::iterator obj = this->objects_.begin(); | |
695 | obj != this->objects_.end(); | |
696 | ++obj) | |
697 | delete *obj; | |
698 | this->objects_.clear(); | |
d37ffe25 | 699 | delete this->lock_; |
291158a3 | 700 | delete this->recorder_; |
89fc3421 CC |
701 | } |
702 | ||
703 | // Load all plugin libraries. | |
704 | ||
705 | void | |
e9552f7e | 706 | Plugin_manager::load_plugins(Layout* layout) |
89fc3421 | 707 | { |
e9552f7e | 708 | this->layout_ = layout; |
291158a3 CC |
709 | |
710 | if (is_debugging_enabled(DEBUG_PLUGIN)) | |
711 | { | |
712 | this->recorder_ = new Plugin_recorder(); | |
713 | this->recorder_->init(); | |
714 | } | |
715 | ||
89fc3421 CC |
716 | for (this->current_ = this->plugins_.begin(); |
717 | this->current_ != this->plugins_.end(); | |
718 | ++this->current_) | |
719 | (*this->current_)->load(); | |
720 | } | |
721 | ||
722 | // Call the plugin claim-file handlers in turn to see if any claim the file. | |
723 | ||
724 | Pluginobj* | |
725 | Plugin_manager::claim_file(Input_file* input_file, off_t offset, | |
e9552f7e | 726 | off_t filesize, Object* elf_object) |
89fc3421 | 727 | { |
d37ffe25 ED |
728 | bool lock_initialized = this->initialize_lock_.initialize(); |
729 | ||
730 | gold_assert(lock_initialized); | |
731 | Hold_lock hl(*this->lock_); | |
89fc3421 CC |
732 | |
733 | unsigned int handle = this->objects_.size(); | |
734 | this->input_file_ = input_file; | |
735 | this->plugin_input_file_.name = input_file->filename().c_str(); | |
736 | this->plugin_input_file_.fd = input_file->file().descriptor(); | |
737 | this->plugin_input_file_.offset = offset; | |
738 | this->plugin_input_file_.filesize = filesize; | |
739 | this->plugin_input_file_.handle = reinterpret_cast<void*>(handle); | |
e9552f7e ST |
740 | if (elf_object != NULL) |
741 | this->objects_.push_back(elf_object); | |
742 | this->in_claim_file_handler_ = true; | |
89fc3421 CC |
743 | |
744 | for (this->current_ = this->plugins_.begin(); | |
745 | this->current_ != this->plugins_.end(); | |
746 | ++this->current_) | |
747 | { | |
c4e64843 SC |
748 | // If we aren't yet in replacement phase, allow plugins to claim input |
749 | // files, otherwise notify the plugin of the new input file, if needed. | |
750 | if (!this->in_replacement_phase_) | |
89fc3421 | 751 | { |
c4e64843 SC |
752 | if ((*this->current_)->claim_file(&this->plugin_input_file_)) |
753 | { | |
754 | this->any_claimed_ = true; | |
755 | this->in_claim_file_handler_ = false; | |
756 | ||
291158a3 CC |
757 | if (this->recorder_ != NULL) |
758 | { | |
759 | const std::string& objname = (elf_object == NULL | |
760 | ? input_file->filename() | |
761 | : elf_object->name()); | |
762 | this->recorder_->claimed_file(objname, | |
763 | offset, filesize, | |
764 | (*this->current_)->filename()); | |
765 | } | |
766 | ||
c4e64843 SC |
767 | if (this->objects_.size() > handle |
768 | && this->objects_[handle]->pluginobj() != NULL) | |
769 | return this->objects_[handle]->pluginobj(); | |
770 | ||
771 | // If the plugin claimed the file but did not call the | |
772 | // add_symbols callback, we need to create the Pluginobj now. | |
773 | Pluginobj* obj = this->make_plugin_object(handle); | |
774 | return obj; | |
775 | } | |
776 | } | |
777 | else | |
778 | { | |
779 | (*this->current_)->new_input(&this->plugin_input_file_); | |
89fc3421 CC |
780 | } |
781 | } | |
782 | ||
e9552f7e | 783 | this->in_claim_file_handler_ = false; |
291158a3 CC |
784 | |
785 | if (this->recorder_ != NULL) | |
786 | this->recorder_->unclaimed_file(input_file->filename(), offset, filesize); | |
787 | ||
89fc3421 CC |
788 | return NULL; |
789 | } | |
790 | ||
0f3b89d8 ILT |
791 | // Save an archive. This is used so that a plugin can add a file |
792 | // which refers to a symbol which was not previously referenced. In | |
793 | // that case we want to pretend that the symbol was referenced before, | |
794 | // and pull in the archive object. | |
795 | ||
796 | void | |
797 | Plugin_manager::save_archive(Archive* archive) | |
798 | { | |
799 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
800 | delete archive; | |
801 | else | |
802 | this->rescannable_.push_back(Rescannable(archive)); | |
803 | } | |
804 | ||
805 | // Save an Input_group. This is like save_archive. | |
806 | ||
807 | void | |
808 | Plugin_manager::save_input_group(Input_group* input_group) | |
809 | { | |
810 | if (this->in_replacement_phase_ || !this->any_claimed_) | |
811 | delete input_group; | |
812 | else | |
813 | this->rescannable_.push_back(Rescannable(input_group)); | |
814 | } | |
815 | ||
89fc3421 CC |
816 | // Call the all-symbols-read handlers. |
817 | ||
818 | void | |
0f7c0701 | 819 | Plugin_manager::all_symbols_read(Workqueue* workqueue, Task* task, |
89fc3421 | 820 | Input_objects* input_objects, |
e9552f7e | 821 | Symbol_table* symtab, |
89fc3421 CC |
822 | Dirsearch* dirpath, Mapfile* mapfile, |
823 | Task_token** last_blocker) | |
824 | { | |
825 | this->in_replacement_phase_ = true; | |
826 | this->workqueue_ = workqueue; | |
0f7c0701 | 827 | this->task_ = task; |
89fc3421 CC |
828 | this->input_objects_ = input_objects; |
829 | this->symtab_ = symtab; | |
89fc3421 CC |
830 | this->dirpath_ = dirpath; |
831 | this->mapfile_ = mapfile; | |
832 | this->this_blocker_ = NULL; | |
833 | ||
3281b315 ST |
834 | // Set symbols used in defsym expressions as seen in real ELF. |
835 | Layout *layout = parameters->options().plugins()->layout(); | |
836 | layout->script_options()->set_defsym_uses_in_real_elf(symtab); | |
837 | layout->script_options()->find_defsym_defs(this->defsym_defines_set_); | |
838 | ||
89fc3421 CC |
839 | for (this->current_ = this->plugins_.begin(); |
840 | this->current_ != this->plugins_.end(); | |
841 | ++this->current_) | |
842 | (*this->current_)->all_symbols_read(); | |
843 | ||
0f3b89d8 ILT |
844 | if (this->any_added_) |
845 | { | |
846 | Task_token* next_blocker = new Task_token(true); | |
847 | next_blocker->add_blocker(); | |
848 | workqueue->queue(new Plugin_rescan(this->this_blocker_, next_blocker)); | |
849 | this->this_blocker_ = next_blocker; | |
850 | } | |
851 | ||
89fc3421 CC |
852 | *last_blocker = this->this_blocker_; |
853 | } | |
854 | ||
0f3b89d8 ILT |
855 | // This is called when we see a new undefined symbol. If we are in |
856 | // the replacement phase, this means that we may need to rescan some | |
857 | // archives we have previously seen. | |
858 | ||
859 | void | |
860 | Plugin_manager::new_undefined_symbol(Symbol* sym) | |
861 | { | |
862 | if (this->in_replacement_phase_) | |
863 | this->undefined_symbols_.push_back(sym); | |
864 | } | |
865 | ||
866 | // Rescan archives as needed. This handles the case where a new | |
867 | // object file added by a plugin has an undefined reference to some | |
868 | // symbol defined in an archive. | |
869 | ||
870 | void | |
871 | Plugin_manager::rescan(Task* task) | |
872 | { | |
873 | size_t rescan_pos = 0; | |
874 | size_t rescan_size = this->rescannable_.size(); | |
875 | while (!this->undefined_symbols_.empty()) | |
876 | { | |
877 | if (rescan_pos >= rescan_size) | |
878 | { | |
879 | this->undefined_symbols_.clear(); | |
880 | return; | |
881 | } | |
882 | ||
883 | Undefined_symbol_list undefs; | |
884 | undefs.reserve(this->undefined_symbols_.size()); | |
885 | this->undefined_symbols_.swap(undefs); | |
886 | ||
887 | size_t min_rescan_pos = rescan_size; | |
888 | ||
889 | for (Undefined_symbol_list::const_iterator p = undefs.begin(); | |
890 | p != undefs.end(); | |
891 | ++p) | |
892 | { | |
893 | if (!(*p)->is_undefined()) | |
894 | continue; | |
895 | ||
896 | this->undefined_symbols_.push_back(*p); | |
897 | ||
898 | // Find the first rescan archive which defines this symbol, | |
899 | // starting at the current rescan position. The rescan position | |
900 | // exists so that given -la -lb -lc we don't look for undefined | |
901 | // symbols in -lb back in -la, but instead get the definition | |
902 | // from -lc. Don't bother to look past the current minimum | |
903 | // rescan position. | |
904 | for (size_t i = rescan_pos; i < min_rescan_pos; ++i) | |
905 | { | |
906 | if (this->rescannable_defines(i, *p)) | |
907 | { | |
908 | min_rescan_pos = i; | |
909 | break; | |
910 | } | |
911 | } | |
912 | } | |
913 | ||
914 | if (min_rescan_pos >= rescan_size) | |
915 | { | |
916 | // We didn't find any rescannable archives which define any | |
917 | // undefined symbols. | |
918 | return; | |
919 | } | |
920 | ||
921 | const Rescannable& r(this->rescannable_[min_rescan_pos]); | |
922 | if (r.is_archive) | |
923 | { | |
924 | Task_lock_obj<Archive> tl(task, r.u.archive); | |
925 | r.u.archive->add_symbols(this->symtab_, this->layout_, | |
926 | this->input_objects_, this->mapfile_); | |
927 | } | |
928 | else | |
929 | { | |
930 | size_t next_saw_undefined = this->symtab_->saw_undefined(); | |
931 | size_t saw_undefined; | |
932 | do | |
933 | { | |
934 | saw_undefined = next_saw_undefined; | |
935 | ||
936 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
937 | p != r.u.input_group->end(); | |
938 | ++p) | |
939 | { | |
940 | Task_lock_obj<Archive> tl(task, *p); | |
941 | ||
942 | (*p)->add_symbols(this->symtab_, this->layout_, | |
943 | this->input_objects_, this->mapfile_); | |
944 | } | |
945 | ||
946 | next_saw_undefined = this->symtab_->saw_undefined(); | |
947 | } | |
948 | while (saw_undefined != next_saw_undefined); | |
949 | } | |
950 | ||
951 | for (size_t i = rescan_pos; i < min_rescan_pos + 1; ++i) | |
952 | { | |
953 | if (this->rescannable_[i].is_archive) | |
954 | delete this->rescannable_[i].u.archive; | |
955 | else | |
956 | delete this->rescannable_[i].u.input_group; | |
957 | } | |
958 | ||
959 | rescan_pos = min_rescan_pos + 1; | |
960 | } | |
961 | } | |
962 | ||
963 | // Return whether the rescannable at index I defines SYM. | |
964 | ||
965 | bool | |
966 | Plugin_manager::rescannable_defines(size_t i, Symbol* sym) | |
967 | { | |
968 | const Rescannable& r(this->rescannable_[i]); | |
969 | if (r.is_archive) | |
970 | return r.u.archive->defines_symbol(sym); | |
971 | else | |
972 | { | |
973 | for (Input_group::const_iterator p = r.u.input_group->begin(); | |
974 | p != r.u.input_group->end(); | |
975 | ++p) | |
976 | { | |
977 | if ((*p)->defines_symbol(sym)) | |
978 | return true; | |
979 | } | |
980 | return false; | |
981 | } | |
982 | } | |
983 | ||
483620e8 | 984 | // Layout deferred objects. |
89fc3421 CC |
985 | |
986 | void | |
483620e8 | 987 | Plugin_manager::layout_deferred_objects() |
89fc3421 | 988 | { |
5995b570 CC |
989 | Deferred_layout_list::iterator obj; |
990 | ||
991 | for (obj = this->deferred_layout_objects_.begin(); | |
992 | obj != this->deferred_layout_objects_.end(); | |
993 | ++obj) | |
5f9bcf58 CC |
994 | { |
995 | // Lock the object so we can read from it. This is only called | |
996 | // single-threaded from queue_middle_tasks, so it is OK to lock. | |
997 | // Unfortunately we have no way to pass in a Task token. | |
998 | const Task* dummy_task = reinterpret_cast<const Task*>(-1); | |
999 | Task_lock_obj<Object> tl(dummy_task, *obj); | |
1000 | (*obj)->layout_deferred_sections(this->layout_); | |
1001 | } | |
483620e8 CC |
1002 | } |
1003 | ||
1004 | // Call the cleanup handlers. | |
5995b570 | 1005 | |
483620e8 CC |
1006 | void |
1007 | Plugin_manager::cleanup() | |
1008 | { | |
20e2a8aa ILT |
1009 | if (this->any_added_) |
1010 | { | |
1011 | // If any input files were added, close all the input files. | |
1012 | // This is because the plugin may want to remove them, and on | |
1013 | // Windows you are not allowed to remove an open file. | |
1014 | close_all_descriptors(); | |
1015 | } | |
1016 | ||
89fc3421 CC |
1017 | for (this->current_ = this->plugins_.begin(); |
1018 | this->current_ != this->plugins_.end(); | |
1019 | ++this->current_) | |
1020 | (*this->current_)->cleanup(); | |
1021 | } | |
1022 | ||
1023 | // Make a new Pluginobj object. This is called when the plugin calls | |
1024 | // the add_symbols API. | |
1025 | ||
1026 | Pluginobj* | |
1027 | Plugin_manager::make_plugin_object(unsigned int handle) | |
1028 | { | |
1029 | // Make sure we aren't asked to make an object for the same handle twice. | |
e9552f7e ST |
1030 | if (this->objects_.size() != handle |
1031 | && this->objects_[handle]->pluginobj() != NULL) | |
89fc3421 CC |
1032 | return NULL; |
1033 | ||
291158a3 CC |
1034 | const std::string* filename = &this->input_file_->filename(); |
1035 | ||
1036 | // If the elf object for this file was pushed into the objects_ vector, | |
1037 | // use its filename, then delete it to make room for the Pluginobj as | |
1038 | // this file is claimed. | |
1039 | if (this->objects_.size() != handle) | |
1040 | { | |
1041 | filename = &this->objects_.back()->name(); | |
1042 | this->objects_.pop_back(); | |
1043 | } | |
1044 | ||
1045 | Pluginobj* obj = make_sized_plugin_object(*filename, | |
1046 | this->input_file_, | |
0f7c0701 CC |
1047 | this->plugin_input_file_.offset, |
1048 | this->plugin_input_file_.filesize); | |
e9552f7e ST |
1049 | |
1050 | ||
e9552f7e | 1051 | |
89fc3421 CC |
1052 | this->objects_.push_back(obj); |
1053 | return obj; | |
1054 | } | |
1055 | ||
0f7c0701 CC |
1056 | // Get the input file information with an open (possibly re-opened) |
1057 | // file descriptor. | |
1058 | ||
1059 | ld_plugin_status | |
1060 | Plugin_manager::get_input_file(unsigned int handle, | |
ca09d69a | 1061 | struct ld_plugin_input_file* file) |
0f7c0701 | 1062 | { |
e9552f7e | 1063 | Pluginobj* obj = this->object(handle)->pluginobj(); |
0f7c0701 CC |
1064 | if (obj == NULL) |
1065 | return LDPS_BAD_HANDLE; | |
1066 | ||
1067 | obj->lock(this->task_); | |
1068 | file->name = obj->filename().c_str(); | |
1069 | file->fd = obj->descriptor(); | |
1070 | file->offset = obj->offset(); | |
1071 | file->filesize = obj->filesize(); | |
1072 | file->handle = reinterpret_cast<void*>(handle); | |
1073 | return LDPS_OK; | |
1074 | } | |
1075 | ||
1076 | // Release the input file. | |
1077 | ||
1078 | ld_plugin_status | |
1079 | Plugin_manager::release_input_file(unsigned int handle) | |
1080 | { | |
e9552f7e ST |
1081 | if (this->object(handle) == NULL) |
1082 | return LDPS_BAD_HANDLE; | |
1083 | ||
1084 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
1085 | ||
0f7c0701 CC |
1086 | if (obj == NULL) |
1087 | return LDPS_BAD_HANDLE; | |
1088 | ||
1089 | obj->unlock(this->task_); | |
1090 | return LDPS_OK; | |
1091 | } | |
1092 | ||
e9552f7e ST |
1093 | // Get the elf object corresponding to the handle. Return NULL if we |
1094 | // found a Pluginobj instead. | |
1095 | ||
1096 | Object* | |
1097 | Plugin_manager::get_elf_object(const void* handle) | |
1098 | { | |
1099 | Object* obj = this->object( | |
1100 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1101 | ||
1102 | // The object should not be a Pluginobj. | |
1103 | if (obj == NULL | |
1104 | || obj->pluginobj() != NULL) | |
1105 | return NULL; | |
1106 | ||
1107 | return obj; | |
1108 | } | |
1109 | ||
9c793f14 RÁE |
1110 | ld_plugin_status |
1111 | Plugin_manager::get_view(unsigned int handle, const void **viewp) | |
1112 | { | |
1113 | off_t offset; | |
1114 | size_t filesize; | |
1115 | Input_file *input_file; | |
e9552f7e | 1116 | if (this->in_claim_file_handler_) |
9c793f14 RÁE |
1117 | { |
1118 | // We are being called from the claim_file hook. | |
1119 | const struct ld_plugin_input_file &f = this->plugin_input_file_; | |
1120 | offset = f.offset; | |
1121 | filesize = f.filesize; | |
1122 | input_file = this->input_file_; | |
1123 | } | |
1124 | else | |
1125 | { | |
1126 | // An already claimed file. | |
e9552f7e ST |
1127 | if (this->object(handle) == NULL) |
1128 | return LDPS_BAD_HANDLE; | |
1129 | Pluginobj* obj = this->object(handle)->pluginobj(); | |
9c793f14 RÁE |
1130 | if (obj == NULL) |
1131 | return LDPS_BAD_HANDLE; | |
1132 | offset = obj->offset(); | |
1133 | filesize = obj->filesize(); | |
1134 | input_file = obj->input_file(); | |
1135 | } | |
1136 | *viewp = (void*) input_file->file().get_view(offset, 0, filesize, false, | |
1137 | false); | |
1138 | return LDPS_OK; | |
1139 | } | |
1140 | ||
42218b9f RÁE |
1141 | // Add a new library path. |
1142 | ||
1143 | ld_plugin_status | |
ca09d69a | 1144 | Plugin_manager::set_extra_library_path(const char* path) |
42218b9f RÁE |
1145 | { |
1146 | this->extra_search_path_ = std::string(path); | |
1147 | return LDPS_OK; | |
1148 | } | |
1149 | ||
89fc3421 CC |
1150 | // Add a new input file. |
1151 | ||
1152 | ld_plugin_status | |
ca09d69a | 1153 | Plugin_manager::add_input_file(const char* pathname, bool is_lib) |
89fc3421 | 1154 | { |
ae3b5189 CD |
1155 | Input_file_argument file(pathname, |
1156 | (is_lib | |
1157 | ? Input_file_argument::INPUT_FILE_TYPE_LIBRARY | |
1158 | : Input_file_argument::INPUT_FILE_TYPE_FILE), | |
42218b9f RÁE |
1159 | (is_lib |
1160 | ? this->extra_search_path_.c_str() | |
1161 | : ""), | |
1162 | false, | |
1163 | this->options_); | |
89fc3421 CC |
1164 | Input_argument* input_argument = new Input_argument(file); |
1165 | Task_token* next_blocker = new Task_token(true); | |
1166 | next_blocker->add_blocker(); | |
8c21d9d3 | 1167 | if (parameters->incremental()) |
40f36857 CC |
1168 | gold_error(_("input files added by plug-ins in --incremental mode not " |
1169 | "supported yet")); | |
291158a3 CC |
1170 | |
1171 | if (this->recorder_ != NULL) | |
1172 | this->recorder_->replacement_file(pathname, is_lib); | |
1173 | ||
f1ed28fb | 1174 | this->workqueue_->queue_soon(new Read_symbols(this->input_objects_, |
89fc3421 CC |
1175 | this->symtab_, |
1176 | this->layout_, | |
1177 | this->dirpath_, | |
15f8229b | 1178 | 0, |
89fc3421 CC |
1179 | this->mapfile_, |
1180 | input_argument, | |
1181 | NULL, | |
b0193076 | 1182 | NULL, |
89fc3421 CC |
1183 | this->this_blocker_, |
1184 | next_blocker)); | |
1185 | this->this_blocker_ = next_blocker; | |
0f3b89d8 | 1186 | this->any_added_ = true; |
89fc3421 CC |
1187 | return LDPS_OK; |
1188 | } | |
1189 | ||
1190 | // Class Pluginobj. | |
1191 | ||
2ea97941 ILT |
1192 | Pluginobj::Pluginobj(const std::string& name, Input_file* input_file, |
1193 | off_t offset, off_t filesize) | |
1194 | : Object(name, input_file, false, offset), | |
1195 | nsyms_(0), syms_(NULL), symbols_(), filesize_(filesize), comdat_map_() | |
89fc3421 CC |
1196 | { |
1197 | } | |
1198 | ||
235061c2 | 1199 | // Return TRUE if a defined symbol is referenced from outside the |
f7c5b166 CC |
1200 | // universe of claimed objects. Only references from relocatable, |
1201 | // non-IR (unclaimed) objects count as a reference. References from | |
1202 | // dynamic objects count only as "visible". | |
d66a9eb3 CC |
1203 | |
1204 | static inline bool | |
235061c2 | 1205 | is_referenced_from_outside(Symbol* lsym) |
d66a9eb3 CC |
1206 | { |
1207 | if (lsym->in_real_elf()) | |
1208 | return true; | |
1209 | if (parameters->options().relocatable()) | |
1210 | return true; | |
84ced98a RÁE |
1211 | if (parameters->options().is_undefined(lsym->name())) |
1212 | return true; | |
235061c2 CC |
1213 | return false; |
1214 | } | |
1215 | ||
1216 | // Return TRUE if a defined symbol might be reachable from outside the | |
1217 | // load module. | |
1218 | ||
1219 | static inline bool | |
1220 | is_visible_from_outside(Symbol* lsym) | |
1221 | { | |
f7c5b166 CC |
1222 | if (lsym->in_dyn()) |
1223 | return true; | |
ca464aac TJ |
1224 | if (parameters->options().export_dynamic() || parameters->options().shared() |
1225 | || parameters->options().in_dynamic_list(lsym->name()) | |
1226 | || parameters->options().is_export_dynamic_symbol(lsym->name())) | |
d66a9eb3 CC |
1227 | return lsym->is_externally_visible(); |
1228 | return false; | |
1229 | } | |
1230 | ||
89fc3421 CC |
1231 | // Get symbol resolution info. |
1232 | ||
1233 | ld_plugin_status | |
3c537f7f PC |
1234 | Pluginobj::get_symbol_resolution_info(Symbol_table* symtab, |
1235 | int nsyms, | |
235061c2 CC |
1236 | ld_plugin_symbol* syms, |
1237 | int version) const | |
1238 | { | |
1239 | // For version 1 of this interface, we cannot use | |
1240 | // LDPR_PREVAILING_DEF_IRONLY_EXP, so we return LDPR_PREVAILING_DEF | |
1241 | // instead. | |
1242 | const ld_plugin_symbol_resolution ldpr_prevailing_def_ironly_exp | |
1243 | = (version > 1 | |
1244 | ? LDPR_PREVAILING_DEF_IRONLY_EXP | |
1245 | : LDPR_PREVAILING_DEF); | |
1246 | ||
abc8dcba | 1247 | if (nsyms > this->nsyms_) |
89fc3421 | 1248 | return LDPS_NO_SYMS; |
b0193076 RÁE |
1249 | |
1250 | if (static_cast<size_t>(nsyms) > this->symbols_.size()) | |
1251 | { | |
1252 | // We never decided to include this object. We mark all symbols as | |
1253 | // preempted. | |
ca09d69a | 1254 | gold_assert(this->symbols_.size() == 0); |
b0193076 RÁE |
1255 | for (int i = 0; i < nsyms; i++) |
1256 | syms[i].resolution = LDPR_PREEMPTED_REG; | |
95ecdfbf | 1257 | return version > 2 ? LDPS_NO_SYMS : LDPS_OK; |
b0193076 RÁE |
1258 | } |
1259 | ||
3281b315 | 1260 | Plugin_manager* plugins = parameters->options().plugins(); |
89fc3421 CC |
1261 | for (int i = 0; i < nsyms; i++) |
1262 | { | |
1263 | ld_plugin_symbol* isym = &syms[i]; | |
1264 | Symbol* lsym = this->symbols_[i]; | |
3c537f7f PC |
1265 | if (lsym->is_forwarder()) |
1266 | lsym = symtab->resolve_forwards(lsym); | |
89fc3421 CC |
1267 | ld_plugin_symbol_resolution res = LDPR_UNKNOWN; |
1268 | ||
3281b315 ST |
1269 | if (plugins->is_defsym_def(lsym->name())) |
1270 | { | |
1271 | // The symbol is redefined via defsym. | |
1272 | res = LDPR_PREEMPTED_REG; | |
1273 | } | |
1274 | else if (lsym->is_undefined()) | |
1275 | { | |
1276 | // The symbol remains undefined. | |
1277 | res = LDPR_UNDEF; | |
1278 | } | |
89fc3421 CC |
1279 | else if (isym->def == LDPK_UNDEF |
1280 | || isym->def == LDPK_WEAKUNDEF | |
1281 | || isym->def == LDPK_COMMON) | |
1282 | { | |
1283 | // The original symbol was undefined or common. | |
1284 | if (lsym->source() != Symbol::FROM_OBJECT) | |
1285 | res = LDPR_RESOLVED_EXEC; | |
be234d88 | 1286 | else if (lsym->object()->pluginobj() == this) |
235061c2 CC |
1287 | { |
1288 | if (is_referenced_from_outside(lsym)) | |
1289 | res = LDPR_PREVAILING_DEF; | |
1290 | else if (is_visible_from_outside(lsym)) | |
1291 | res = ldpr_prevailing_def_ironly_exp; | |
1292 | else | |
1293 | res = LDPR_PREVAILING_DEF_IRONLY; | |
1294 | } | |
89fc3421 CC |
1295 | else if (lsym->object()->pluginobj() != NULL) |
1296 | res = LDPR_RESOLVED_IR; | |
1297 | else if (lsym->object()->is_dynamic()) | |
1298 | res = LDPR_RESOLVED_DYN; | |
1299 | else | |
1300 | res = LDPR_RESOLVED_EXEC; | |
1301 | } | |
1302 | else | |
1303 | { | |
1304 | // The original symbol was a definition. | |
1305 | if (lsym->source() != Symbol::FROM_OBJECT) | |
1306 | res = LDPR_PREEMPTED_REG; | |
1307 | else if (lsym->object() == static_cast<const Object*>(this)) | |
235061c2 CC |
1308 | { |
1309 | if (is_referenced_from_outside(lsym)) | |
1310 | res = LDPR_PREVAILING_DEF; | |
1311 | else if (is_visible_from_outside(lsym)) | |
1312 | res = ldpr_prevailing_def_ironly_exp; | |
1313 | else | |
1314 | res = LDPR_PREVAILING_DEF_IRONLY; | |
1315 | } | |
89fc3421 CC |
1316 | else |
1317 | res = (lsym->object()->pluginobj() != NULL | |
1318 | ? LDPR_PREEMPTED_IR | |
1319 | : LDPR_PREEMPTED_REG); | |
1320 | } | |
1321 | isym->resolution = res; | |
1322 | } | |
1323 | return LDPS_OK; | |
1324 | } | |
1325 | ||
1326 | // Return TRUE if the comdat group with key COMDAT_KEY from this object | |
1327 | // should be kept. | |
1328 | ||
1329 | bool | |
2ea97941 | 1330 | Pluginobj::include_comdat_group(std::string comdat_key, Layout* layout) |
89fc3421 CC |
1331 | { |
1332 | std::pair<Comdat_map::iterator, bool> ins = | |
1333 | this->comdat_map_.insert(std::make_pair(comdat_key, false)); | |
1334 | ||
1335 | // If this is the first time we've seen this comdat key, ask the | |
1336 | // layout object whether it should be included. | |
1337 | if (ins.second) | |
2ea97941 ILT |
1338 | ins.first->second = layout->find_or_add_kept_section(comdat_key, |
1339 | NULL, 0, true, | |
1340 | true, NULL); | |
89fc3421 CC |
1341 | |
1342 | return ins.first->second; | |
1343 | } | |
1344 | ||
1345 | // Class Sized_pluginobj. | |
1346 | ||
1347 | template<int size, bool big_endian> | |
1348 | Sized_pluginobj<size, big_endian>::Sized_pluginobj( | |
2ea97941 ILT |
1349 | const std::string& name, |
1350 | Input_file* input_file, | |
1351 | off_t offset, | |
1352 | off_t filesize) | |
1353 | : Pluginobj(name, input_file, offset, filesize) | |
89fc3421 CC |
1354 | { |
1355 | } | |
1356 | ||
1357 | // Read the symbols. Not used for plugin objects. | |
1358 | ||
1359 | template<int size, bool big_endian> | |
1360 | void | |
1361 | Sized_pluginobj<size, big_endian>::do_read_symbols(Read_symbols_data*) | |
1362 | { | |
1363 | gold_unreachable(); | |
1364 | } | |
1365 | ||
1366 | // Lay out the input sections. Not used for plugin objects. | |
1367 | ||
1368 | template<int size, bool big_endian> | |
1369 | void | |
1370 | Sized_pluginobj<size, big_endian>::do_layout(Symbol_table*, Layout*, | |
1371 | Read_symbols_data*) | |
1372 | { | |
1373 | gold_unreachable(); | |
1374 | } | |
1375 | ||
1376 | // Add the symbols to the symbol table. | |
1377 | ||
89fc3421 CC |
1378 | template<int size, bool big_endian> |
1379 | void | |
1380 | Sized_pluginobj<size, big_endian>::do_add_symbols(Symbol_table* symtab, | |
f488e4b0 | 1381 | Read_symbols_data*, |
2ea97941 | 1382 | Layout* layout) |
89fc3421 CC |
1383 | { |
1384 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1385 | unsigned char symbuf[sym_size]; | |
1386 | elfcpp::Sym<size, big_endian> sym(symbuf); | |
1387 | elfcpp::Sym_write<size, big_endian> osym(symbuf); | |
1388 | ||
291158a3 CC |
1389 | Plugin_recorder* recorder = parameters->options().plugins()->recorder(); |
1390 | if (recorder != NULL) | |
1391 | recorder->record_symbols(this, this->nsyms_, this->syms_); | |
1392 | ||
89fc3421 CC |
1393 | this->symbols_.resize(this->nsyms_); |
1394 | ||
1395 | for (int i = 0; i < this->nsyms_; ++i) | |
1396 | { | |
ca09d69a | 1397 | const struct ld_plugin_symbol* isym = &this->syms_[i]; |
2ea97941 | 1398 | const char* name = isym->name; |
89fc3421 CC |
1399 | const char* ver = isym->version; |
1400 | elfcpp::Elf_Half shndx; | |
1401 | elfcpp::STB bind; | |
1402 | elfcpp::STV vis; | |
1403 | ||
2ea97941 ILT |
1404 | if (name != NULL && name[0] == '\0') |
1405 | name = NULL; | |
89fc3421 CC |
1406 | if (ver != NULL && ver[0] == '\0') |
1407 | ver = NULL; | |
1408 | ||
1409 | switch (isym->def) | |
1410 | { | |
1411 | case LDPK_WEAKDEF: | |
1412 | case LDPK_WEAKUNDEF: | |
1413 | bind = elfcpp::STB_WEAK; | |
1414 | break; | |
1415 | case LDPK_DEF: | |
1416 | case LDPK_UNDEF: | |
1417 | case LDPK_COMMON: | |
1418 | default: | |
1419 | bind = elfcpp::STB_GLOBAL; | |
1420 | break; | |
1421 | } | |
1422 | ||
1423 | switch (isym->def) | |
1424 | { | |
1425 | case LDPK_DEF: | |
1426 | case LDPK_WEAKDEF: | |
0b7a4aa6 CC |
1427 | // We use an arbitrary section number for a defined symbol. |
1428 | shndx = 1; | |
89fc3421 CC |
1429 | break; |
1430 | case LDPK_COMMON: | |
1431 | shndx = elfcpp::SHN_COMMON; | |
1432 | break; | |
1433 | case LDPK_UNDEF: | |
1434 | case LDPK_WEAKUNDEF: | |
1435 | default: | |
1436 | shndx = elfcpp::SHN_UNDEF; | |
1437 | break; | |
1438 | } | |
1439 | ||
1440 | switch (isym->visibility) | |
1441 | { | |
1442 | case LDPV_PROTECTED: | |
105b6afd | 1443 | vis = elfcpp::STV_PROTECTED; |
89fc3421 CC |
1444 | break; |
1445 | case LDPV_INTERNAL: | |
105b6afd | 1446 | vis = elfcpp::STV_INTERNAL; |
89fc3421 CC |
1447 | break; |
1448 | case LDPV_HIDDEN: | |
105b6afd | 1449 | vis = elfcpp::STV_HIDDEN; |
89fc3421 CC |
1450 | break; |
1451 | case LDPV_DEFAULT: | |
1452 | default: | |
1453 | vis = elfcpp::STV_DEFAULT; | |
1454 | break; | |
1455 | } | |
1456 | ||
1457 | if (isym->comdat_key != NULL | |
1458 | && isym->comdat_key[0] != '\0' | |
2ea97941 | 1459 | && !this->include_comdat_group(isym->comdat_key, layout)) |
89fc3421 CC |
1460 | shndx = elfcpp::SHN_UNDEF; |
1461 | ||
1462 | osym.put_st_name(0); | |
1463 | osym.put_st_value(0); | |
6168c2a1 | 1464 | osym.put_st_size(0); |
89fc3421 CC |
1465 | osym.put_st_info(bind, elfcpp::STT_NOTYPE); |
1466 | osym.put_st_other(vis, 0); | |
1467 | osym.put_st_shndx(shndx); | |
1468 | ||
1469 | this->symbols_[i] = | |
2ea97941 | 1470 | symtab->add_from_pluginobj<size, big_endian>(this, name, ver, &sym); |
89fc3421 CC |
1471 | } |
1472 | } | |
1473 | ||
b0193076 RÁE |
1474 | template<int size, bool big_endian> |
1475 | Archive::Should_include | |
1476 | Sized_pluginobj<size, big_endian>::do_should_include_member( | |
88a4108b ILT |
1477 | Symbol_table* symtab, |
1478 | Layout* layout, | |
1479 | Read_symbols_data*, | |
1480 | std::string* why) | |
b0193076 RÁE |
1481 | { |
1482 | char* tmpbuf = NULL; | |
1483 | size_t tmpbuflen = 0; | |
1484 | ||
88a4108b ILT |
1485 | for (int i = 0; i < this->nsyms_; ++i) |
1486 | { | |
1487 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
a06ed37d RÁE |
1488 | if (sym.def == LDPK_UNDEF || sym.def == LDPK_WEAKUNDEF) |
1489 | continue; | |
88a4108b ILT |
1490 | const char* name = sym.name; |
1491 | Symbol* symbol; | |
1492 | Archive::Should_include t = Archive::should_include_member(symtab, | |
1493 | layout, | |
1494 | name, | |
1495 | &symbol, why, | |
1496 | &tmpbuf, | |
1497 | &tmpbuflen); | |
b0193076 RÁE |
1498 | if (t == Archive::SHOULD_INCLUDE_YES) |
1499 | { | |
1500 | if (tmpbuf != NULL) | |
1501 | free(tmpbuf); | |
1502 | return t; | |
1503 | } | |
88a4108b | 1504 | } |
b0193076 RÁE |
1505 | if (tmpbuf != NULL) |
1506 | free(tmpbuf); | |
1507 | return Archive::SHOULD_INCLUDE_UNKNOWN; | |
1508 | } | |
1509 | ||
e0c52780 CC |
1510 | // Iterate over global symbols, calling a visitor class V for each. |
1511 | ||
1512 | template<int size, bool big_endian> | |
1513 | void | |
1514 | Sized_pluginobj<size, big_endian>::do_for_all_global_symbols( | |
1515 | Read_symbols_data*, | |
1516 | Library_base::Symbol_visitor_base* v) | |
1517 | { | |
1518 | for (int i = 0; i < this->nsyms_; ++i) | |
1519 | { | |
1520 | const struct ld_plugin_symbol& sym = this->syms_[i]; | |
1521 | if (sym.def != LDPK_UNDEF) | |
1522 | v->visit(sym.name); | |
1523 | } | |
1524 | } | |
1525 | ||
cdc29364 CC |
1526 | // Iterate over local symbols, calling a visitor class V for each GOT offset |
1527 | // associated with a local symbol. | |
1528 | template<int size, bool big_endian> | |
1529 | void | |
1530 | Sized_pluginobj<size, big_endian>::do_for_all_local_got_entries( | |
1531 | Got_offset_list::Visitor*) const | |
1532 | { | |
1533 | gold_unreachable(); | |
1534 | } | |
1535 | ||
89fc3421 CC |
1536 | // Get the size of a section. Not used for plugin objects. |
1537 | ||
1538 | template<int size, bool big_endian> | |
1539 | uint64_t | |
1540 | Sized_pluginobj<size, big_endian>::do_section_size(unsigned int) | |
1541 | { | |
1542 | gold_unreachable(); | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | // Get the name of a section. Not used for plugin objects. | |
1547 | ||
1548 | template<int size, bool big_endian> | |
1549 | std::string | |
54674d38 | 1550 | Sized_pluginobj<size, big_endian>::do_section_name(unsigned int) const |
89fc3421 CC |
1551 | { |
1552 | gold_unreachable(); | |
1553 | return std::string(); | |
1554 | } | |
1555 | ||
1556 | // Return a view of the contents of a section. Not used for plugin objects. | |
1557 | ||
1558 | template<int size, bool big_endian> | |
c1027032 CC |
1559 | const unsigned char* |
1560 | Sized_pluginobj<size, big_endian>::do_section_contents( | |
1561 | unsigned int, | |
1562 | section_size_type*, | |
1563 | bool) | |
89fc3421 | 1564 | { |
89fc3421 | 1565 | gold_unreachable(); |
c1027032 | 1566 | return NULL; |
89fc3421 CC |
1567 | } |
1568 | ||
1569 | // Return section flags. Not used for plugin objects. | |
1570 | ||
1571 | template<int size, bool big_endian> | |
1572 | uint64_t | |
1573 | Sized_pluginobj<size, big_endian>::do_section_flags(unsigned int) | |
1574 | { | |
1575 | gold_unreachable(); | |
1576 | return 0; | |
1577 | } | |
1578 | ||
ef15dade ST |
1579 | // Return section entsize. Not used for plugin objects. |
1580 | ||
1581 | template<int size, bool big_endian> | |
1582 | uint64_t | |
1583 | Sized_pluginobj<size, big_endian>::do_section_entsize(unsigned int) | |
1584 | { | |
1585 | gold_unreachable(); | |
1586 | return 0; | |
1587 | } | |
1588 | ||
89fc3421 CC |
1589 | // Return section address. Not used for plugin objects. |
1590 | ||
1591 | template<int size, bool big_endian> | |
1592 | uint64_t | |
1593 | Sized_pluginobj<size, big_endian>::do_section_address(unsigned int) | |
1594 | { | |
1595 | gold_unreachable(); | |
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | // Return section type. Not used for plugin objects. | |
1600 | ||
1601 | template<int size, bool big_endian> | |
1602 | unsigned int | |
1603 | Sized_pluginobj<size, big_endian>::do_section_type(unsigned int) | |
1604 | { | |
1605 | gold_unreachable(); | |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | // Return the section link field. Not used for plugin objects. | |
1610 | ||
1611 | template<int size, bool big_endian> | |
1612 | unsigned int | |
1613 | Sized_pluginobj<size, big_endian>::do_section_link(unsigned int) | |
1614 | { | |
1615 | gold_unreachable(); | |
1616 | return 0; | |
1617 | } | |
1618 | ||
1619 | // Return the section link field. Not used for plugin objects. | |
1620 | ||
1621 | template<int size, bool big_endian> | |
1622 | unsigned int | |
1623 | Sized_pluginobj<size, big_endian>::do_section_info(unsigned int) | |
1624 | { | |
1625 | gold_unreachable(); | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | // Return the section alignment. Not used for plugin objects. | |
1630 | ||
1631 | template<int size, bool big_endian> | |
1632 | uint64_t | |
1633 | Sized_pluginobj<size, big_endian>::do_section_addralign(unsigned int) | |
1634 | { | |
1635 | gold_unreachable(); | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | // Return the Xindex structure to use. Not used for plugin objects. | |
1640 | ||
1641 | template<int size, bool big_endian> | |
1642 | Xindex* | |
1643 | Sized_pluginobj<size, big_endian>::do_initialize_xindex() | |
1644 | { | |
1645 | gold_unreachable(); | |
1646 | return NULL; | |
1647 | } | |
1648 | ||
53bbcc1b CC |
1649 | // Get symbol counts. Don't count plugin objects; the replacement |
1650 | // files will provide the counts. | |
89fc3421 CC |
1651 | |
1652 | template<int size, bool big_endian> | |
1653 | void | |
53bbcc1b CC |
1654 | Sized_pluginobj<size, big_endian>::do_get_global_symbol_counts( |
1655 | const Symbol_table*, | |
1656 | size_t* defined, | |
1657 | size_t* used) const | |
89fc3421 | 1658 | { |
53bbcc1b CC |
1659 | *defined = 0; |
1660 | *used = 0; | |
89fc3421 CC |
1661 | } |
1662 | ||
dde3f402 ILT |
1663 | // Get symbols. Not used for plugin objects. |
1664 | ||
1665 | template<int size, bool big_endian> | |
1666 | const Object::Symbols* | |
1667 | Sized_pluginobj<size, big_endian>::do_get_global_symbols() const | |
1668 | { | |
1669 | gold_unreachable(); | |
1670 | } | |
1671 | ||
5995b570 | 1672 | // Class Plugin_finish. This task runs after all replacement files have |
78384e8f CC |
1673 | // been added. For now, it's a placeholder for a possible plugin API |
1674 | // to allow the plugin to release most of its resources. The cleanup | |
1675 | // handlers must be called later, because they can remove the temporary | |
1676 | // object files that are needed until the end of the link. | |
89fc3421 | 1677 | |
5995b570 | 1678 | class Plugin_finish : public Task |
89fc3421 CC |
1679 | { |
1680 | public: | |
5995b570 | 1681 | Plugin_finish(Task_token* this_blocker, Task_token* next_blocker) |
89fc3421 CC |
1682 | : this_blocker_(this_blocker), next_blocker_(next_blocker) |
1683 | { } | |
1684 | ||
5995b570 | 1685 | ~Plugin_finish() |
89fc3421 CC |
1686 | { |
1687 | if (this->this_blocker_ != NULL) | |
1688 | delete this->this_blocker_; | |
1689 | } | |
1690 | ||
1691 | Task_token* | |
1692 | is_runnable() | |
1693 | { | |
1694 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1695 | return this->this_blocker_; | |
1696 | return NULL; | |
1697 | } | |
1698 | ||
1699 | void | |
1700 | locks(Task_locker* tl) | |
1701 | { tl->add(this, this->next_blocker_); } | |
1702 | ||
1703 | void | |
1704 | run(Workqueue*) | |
483620e8 | 1705 | { |
291158a3 CC |
1706 | Plugin_manager* plugins = parameters->options().plugins(); |
1707 | gold_assert(plugins != NULL); | |
78384e8f | 1708 | // We could call early cleanup handlers here. |
291158a3 CC |
1709 | if (plugins->recorder()) |
1710 | plugins->recorder()->finish(); | |
483620e8 | 1711 | } |
89fc3421 CC |
1712 | |
1713 | std::string | |
1714 | get_name() const | |
5995b570 | 1715 | { return "Plugin_finish"; } |
89fc3421 CC |
1716 | |
1717 | private: | |
1718 | Task_token* this_blocker_; | |
1719 | Task_token* next_blocker_; | |
1720 | }; | |
1721 | ||
1722 | // Class Plugin_hook. | |
1723 | ||
1724 | Plugin_hook::~Plugin_hook() | |
1725 | { | |
1726 | } | |
1727 | ||
1728 | // Return whether a Plugin_hook task is runnable. | |
1729 | ||
1730 | Task_token* | |
1731 | Plugin_hook::is_runnable() | |
1732 | { | |
1733 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
1734 | return this->this_blocker_; | |
1735 | return NULL; | |
1736 | } | |
1737 | ||
1738 | // Return a Task_locker for a Plugin_hook task. We don't need any | |
1739 | // locks here. | |
1740 | ||
1741 | void | |
1742 | Plugin_hook::locks(Task_locker*) | |
1743 | { | |
1744 | } | |
1745 | ||
89fc3421 CC |
1746 | // Run the "all symbols read" plugin hook. |
1747 | ||
1748 | void | |
5995b570 | 1749 | Plugin_hook::run(Workqueue* workqueue) |
89fc3421 CC |
1750 | { |
1751 | gold_assert(this->options_.has_plugins()); | |
a10ae760 | 1752 | Symbol* start_sym = this->symtab_->lookup(parameters->entry()); |
91ff43fe RÁE |
1753 | if (start_sym != NULL) |
1754 | start_sym->set_in_real_elf(); | |
1755 | ||
89fc3421 | 1756 | this->options_.plugins()->all_symbols_read(workqueue, |
0f7c0701 | 1757 | this, |
89fc3421 CC |
1758 | this->input_objects_, |
1759 | this->symtab_, | |
89fc3421 CC |
1760 | this->dirpath_, |
1761 | this->mapfile_, | |
1762 | &this->this_blocker_); | |
5995b570 CC |
1763 | workqueue->queue_soon(new Plugin_finish(this->this_blocker_, |
1764 | this->next_blocker_)); | |
89fc3421 CC |
1765 | } |
1766 | ||
1767 | // The C interface routines called by the plugins. | |
1768 | ||
1769 | #ifdef ENABLE_PLUGINS | |
1770 | ||
1771 | // Register a claim-file handler. | |
1772 | ||
1773 | static enum ld_plugin_status | |
1774 | register_claim_file(ld_plugin_claim_file_handler handler) | |
1775 | { | |
1776 | gold_assert(parameters->options().has_plugins()); | |
1777 | parameters->options().plugins()->set_claim_file_handler(handler); | |
1778 | return LDPS_OK; | |
1779 | } | |
1780 | ||
1781 | // Register an all-symbols-read handler. | |
1782 | ||
1783 | static enum ld_plugin_status | |
1784 | register_all_symbols_read(ld_plugin_all_symbols_read_handler handler) | |
1785 | { | |
1786 | gold_assert(parameters->options().has_plugins()); | |
1787 | parameters->options().plugins()->set_all_symbols_read_handler(handler); | |
1788 | return LDPS_OK; | |
1789 | } | |
1790 | ||
1791 | // Register a cleanup handler. | |
1792 | ||
1793 | static enum ld_plugin_status | |
1794 | register_cleanup(ld_plugin_cleanup_handler handler) | |
1795 | { | |
1796 | gold_assert(parameters->options().has_plugins()); | |
1797 | parameters->options().plugins()->set_cleanup_handler(handler); | |
1798 | return LDPS_OK; | |
1799 | } | |
1800 | ||
1801 | // Add symbols from a plugin-claimed input file. | |
1802 | ||
1803 | static enum ld_plugin_status | |
ca09d69a | 1804 | add_symbols(void* handle, int nsyms, const ld_plugin_symbol* syms) |
89fc3421 CC |
1805 | { |
1806 | gold_assert(parameters->options().has_plugins()); | |
1807 | Pluginobj* obj = parameters->options().plugins()->make_plugin_object( | |
1808 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1809 | if (obj == NULL) | |
1810 | return LDPS_ERR; | |
1811 | obj->store_incoming_symbols(nsyms, syms); | |
1812 | return LDPS_OK; | |
1813 | } | |
1814 | ||
0f7c0701 CC |
1815 | // Get the input file information with an open (possibly re-opened) |
1816 | // file descriptor. | |
1817 | ||
1818 | static enum ld_plugin_status | |
ca09d69a | 1819 | get_input_file(const void* handle, struct ld_plugin_input_file* file) |
0f7c0701 CC |
1820 | { |
1821 | gold_assert(parameters->options().has_plugins()); | |
1822 | unsigned int obj_index = | |
1823 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1824 | return parameters->options().plugins()->get_input_file(obj_index, file); | |
1825 | } | |
1826 | ||
1827 | // Release the input file. | |
1828 | ||
1829 | static enum ld_plugin_status | |
ca09d69a | 1830 | release_input_file(const void* handle) |
0f7c0701 CC |
1831 | { |
1832 | gold_assert(parameters->options().has_plugins()); | |
1833 | unsigned int obj_index = | |
1834 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1835 | return parameters->options().plugins()->release_input_file(obj_index); | |
1836 | } | |
1837 | ||
9c793f14 RÁE |
1838 | static enum ld_plugin_status |
1839 | get_view(const void *handle, const void **viewp) | |
1840 | { | |
1841 | gold_assert(parameters->options().has_plugins()); | |
1842 | unsigned int obj_index = | |
1843 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)); | |
1844 | return parameters->options().plugins()->get_view(obj_index, viewp); | |
1845 | } | |
1846 | ||
89fc3421 CC |
1847 | // Get the symbol resolution info for a plugin-claimed input file. |
1848 | ||
1849 | static enum ld_plugin_status | |
ca09d69a | 1850 | get_symbols(const void* handle, int nsyms, ld_plugin_symbol* syms) |
89fc3421 CC |
1851 | { |
1852 | gold_assert(parameters->options().has_plugins()); | |
3c537f7f PC |
1853 | Plugin_manager* plugins = parameters->options().plugins(); |
1854 | Object* obj = plugins->object( | |
e9552f7e | 1855 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); |
89fc3421 CC |
1856 | if (obj == NULL) |
1857 | return LDPS_ERR; | |
e9552f7e ST |
1858 | Pluginobj* plugin_obj = obj->pluginobj(); |
1859 | if (plugin_obj == NULL) | |
1860 | return LDPS_ERR; | |
3c537f7f PC |
1861 | Symbol_table* symtab = plugins->symtab(); |
1862 | return plugin_obj->get_symbol_resolution_info(symtab, nsyms, syms, 1); | |
235061c2 CC |
1863 | } |
1864 | ||
1865 | // Version 2 of the above. The only difference is that this version | |
1866 | // is allowed to return the resolution code LDPR_PREVAILING_DEF_IRONLY_EXP. | |
1867 | ||
1868 | static enum ld_plugin_status | |
1869 | get_symbols_v2(const void* handle, int nsyms, ld_plugin_symbol* syms) | |
1870 | { | |
1871 | gold_assert(parameters->options().has_plugins()); | |
3c537f7f PC |
1872 | Plugin_manager* plugins = parameters->options().plugins(); |
1873 | Object* obj = plugins->object( | |
235061c2 CC |
1874 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); |
1875 | if (obj == NULL) | |
1876 | return LDPS_ERR; | |
1877 | Pluginobj* plugin_obj = obj->pluginobj(); | |
1878 | if (plugin_obj == NULL) | |
1879 | return LDPS_ERR; | |
3c537f7f PC |
1880 | Symbol_table* symtab = plugins->symtab(); |
1881 | return plugin_obj->get_symbol_resolution_info(symtab, nsyms, syms, 2); | |
89fc3421 CC |
1882 | } |
1883 | ||
95ecdfbf ES |
1884 | // Version 3 of the above. The only difference from v2 is that it |
1885 | // returns LDPS_NO_SYMS instead of LDPS_OK for the objects we never | |
1886 | // decided to include. | |
1887 | ||
1888 | static enum ld_plugin_status | |
1889 | get_symbols_v3(const void* handle, int nsyms, ld_plugin_symbol* syms) | |
1890 | { | |
1891 | gold_assert(parameters->options().has_plugins()); | |
1892 | Plugin_manager* plugins = parameters->options().plugins(); | |
1893 | Object* obj = plugins->object( | |
1894 | static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle))); | |
1895 | if (obj == NULL) | |
1896 | return LDPS_ERR; | |
1897 | Pluginobj* plugin_obj = obj->pluginobj(); | |
1898 | if (plugin_obj == NULL) | |
1899 | return LDPS_ERR; | |
1900 | Symbol_table* symtab = plugins->symtab(); | |
1901 | return plugin_obj->get_symbol_resolution_info(symtab, nsyms, syms, 3); | |
1902 | } | |
1903 | ||
89fc3421 CC |
1904 | // Add a new (real) input file generated by a plugin. |
1905 | ||
1906 | static enum ld_plugin_status | |
ca09d69a | 1907 | add_input_file(const char* pathname) |
89fc3421 CC |
1908 | { |
1909 | gold_assert(parameters->options().has_plugins()); | |
e99daf92 ILT |
1910 | return parameters->options().plugins()->add_input_file(pathname, false); |
1911 | } | |
1912 | ||
1913 | // Add a new (real) library required by a plugin. | |
1914 | ||
1915 | static enum ld_plugin_status | |
ca09d69a | 1916 | add_input_library(const char* pathname) |
e99daf92 ILT |
1917 | { |
1918 | gold_assert(parameters->options().has_plugins()); | |
1919 | return parameters->options().plugins()->add_input_file(pathname, true); | |
89fc3421 CC |
1920 | } |
1921 | ||
42218b9f RÁE |
1922 | // Set the extra library path to be used by libraries added via |
1923 | // add_input_library | |
1924 | ||
1925 | static enum ld_plugin_status | |
ca09d69a | 1926 | set_extra_library_path(const char* path) |
42218b9f RÁE |
1927 | { |
1928 | gold_assert(parameters->options().has_plugins()); | |
1929 | return parameters->options().plugins()->set_extra_library_path(path); | |
1930 | } | |
1931 | ||
89fc3421 CC |
1932 | // Issue a diagnostic message from a plugin. |
1933 | ||
1934 | static enum ld_plugin_status | |
ca09d69a | 1935 | message(int level, const char* format, ...) |
89fc3421 CC |
1936 | { |
1937 | va_list args; | |
1938 | va_start(args, format); | |
1939 | ||
1940 | switch (level) | |
1941 | { | |
1942 | case LDPL_INFO: | |
1943 | parameters->errors()->info(format, args); | |
1944 | break; | |
1945 | case LDPL_WARNING: | |
1946 | parameters->errors()->warning(format, args); | |
1947 | break; | |
1948 | case LDPL_ERROR: | |
1949 | default: | |
1950 | parameters->errors()->error(format, args); | |
1951 | break; | |
1952 | case LDPL_FATAL: | |
1953 | parameters->errors()->fatal(format, args); | |
1954 | break; | |
1955 | } | |
1956 | ||
1957 | va_end(args); | |
1958 | return LDPS_OK; | |
1959 | } | |
1960 | ||
e9552f7e ST |
1961 | // Get the section count of the object corresponding to the handle. This |
1962 | // plugin interface can only be called in the claim_file handler of the plugin. | |
1963 | ||
1964 | static enum ld_plugin_status | |
1965 | get_input_section_count(const void* handle, unsigned int* count) | |
1966 | { | |
1967 | gold_assert(parameters->options().has_plugins()); | |
1968 | ||
1969 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1970 | return LDPS_ERR; | |
1971 | ||
1972 | Object* obj = parameters->options().plugins()->get_elf_object(handle); | |
1973 | ||
1974 | if (obj == NULL) | |
1975 | return LDPS_ERR; | |
1976 | ||
1977 | *count = obj->shnum(); | |
1978 | return LDPS_OK; | |
1979 | } | |
1980 | ||
1981 | // Get the type of the specified section in the object corresponding | |
1982 | // to the handle. This plugin interface can only be called in the | |
1983 | // claim_file handler of the plugin. | |
1984 | ||
1985 | static enum ld_plugin_status | |
1986 | get_input_section_type(const struct ld_plugin_section section, | |
1987 | unsigned int* type) | |
1988 | { | |
1989 | gold_assert(parameters->options().has_plugins()); | |
1990 | ||
1991 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
1992 | return LDPS_ERR; | |
1993 | ||
1994 | Object* obj | |
1995 | = parameters->options().plugins()->get_elf_object(section.handle); | |
1996 | ||
1997 | if (obj == NULL) | |
1998 | return LDPS_BAD_HANDLE; | |
1999 | ||
2000 | *type = obj->section_type(section.shndx); | |
2001 | return LDPS_OK; | |
2002 | } | |
2003 | ||
2004 | // Get the name of the specified section in the object corresponding | |
2005 | // to the handle. This plugin interface can only be called in the | |
2006 | // claim_file handler of the plugin. | |
2007 | ||
2008 | static enum ld_plugin_status | |
2009 | get_input_section_name(const struct ld_plugin_section section, | |
2010 | char** section_name_ptr) | |
2011 | { | |
2012 | gold_assert(parameters->options().has_plugins()); | |
2013 | ||
2014 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
2015 | return LDPS_ERR; | |
2016 | ||
2017 | Object* obj | |
2018 | = parameters->options().plugins()->get_elf_object(section.handle); | |
2019 | ||
2020 | if (obj == NULL) | |
2021 | return LDPS_BAD_HANDLE; | |
2022 | ||
2023 | // Check if the object is locked before getting the section name. | |
2024 | gold_assert(obj->is_locked()); | |
2025 | ||
2026 | const std::string section_name = obj->section_name(section.shndx); | |
2027 | *section_name_ptr = static_cast<char*>(malloc(section_name.length() + 1)); | |
2028 | memcpy(*section_name_ptr, section_name.c_str(), section_name.length() + 1); | |
2029 | return LDPS_OK; | |
2030 | } | |
2031 | ||
2032 | // Get the contents of the specified section in the object corresponding | |
2033 | // to the handle. This plugin interface can only be called in the | |
2034 | // claim_file handler of the plugin. | |
2035 | ||
2036 | static enum ld_plugin_status | |
2037 | get_input_section_contents(const struct ld_plugin_section section, | |
2038 | const unsigned char** section_contents_ptr, | |
2039 | size_t* len) | |
2040 | { | |
2041 | gold_assert(parameters->options().has_plugins()); | |
2042 | ||
2043 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
2044 | return LDPS_ERR; | |
2045 | ||
2046 | Object* obj | |
2047 | = parameters->options().plugins()->get_elf_object(section.handle); | |
2048 | ||
2049 | if (obj == NULL) | |
2050 | return LDPS_BAD_HANDLE; | |
2051 | ||
2052 | // Check if the object is locked before getting the section contents. | |
2053 | gold_assert(obj->is_locked()); | |
2054 | ||
2055 | section_size_type plen; | |
2056 | *section_contents_ptr | |
2057 | = obj->section_contents(section.shndx, &plen, false); | |
2058 | *len = plen; | |
2059 | return LDPS_OK; | |
2060 | } | |
2061 | ||
82838bd6 CC |
2062 | // Get the alignment of the specified section in the object corresponding |
2063 | // to the handle. This plugin interface can only be called in the | |
2064 | // claim_file handler of the plugin. | |
2065 | ||
2066 | static enum ld_plugin_status | |
2067 | get_input_section_alignment(const struct ld_plugin_section section, | |
2068 | unsigned int* addralign) | |
2069 | { | |
2070 | gold_assert(parameters->options().has_plugins()); | |
2071 | ||
2072 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
2073 | return LDPS_ERR; | |
2074 | ||
2075 | Object* obj | |
2076 | = parameters->options().plugins()->get_elf_object(section.handle); | |
2077 | ||
2078 | if (obj == NULL) | |
2079 | return LDPS_BAD_HANDLE; | |
2080 | ||
2081 | *addralign = obj->section_addralign(section.shndx); | |
2082 | return LDPS_OK; | |
2083 | } | |
2084 | ||
2085 | // Get the size of the specified section in the object corresponding | |
2086 | // to the handle. This plugin interface can only be called in the | |
2087 | // claim_file handler of the plugin. | |
2088 | ||
2089 | static enum ld_plugin_status | |
2090 | get_input_section_size(const struct ld_plugin_section section, | |
2091 | uint64_t* secsize) | |
2092 | { | |
2093 | gold_assert(parameters->options().has_plugins()); | |
2094 | ||
2095 | if (!parameters->options().plugins()->in_claim_file_handler()) | |
2096 | return LDPS_ERR; | |
2097 | ||
2098 | Object* obj | |
2099 | = parameters->options().plugins()->get_elf_object(section.handle); | |
2100 | ||
2101 | if (obj == NULL) | |
2102 | return LDPS_BAD_HANDLE; | |
2103 | ||
2104 | *secsize = obj->section_size(section.shndx); | |
2105 | return LDPS_OK; | |
2106 | } | |
2107 | ||
0b65c07b ST |
2108 | static enum ld_plugin_status |
2109 | get_wrap_symbols(uint64_t *count, const char ***wrap_symbols) | |
2110 | { | |
2111 | gold_assert(parameters->options().has_plugins()); | |
2112 | *count = parameters->options().wrap_size(); | |
2113 | ||
2114 | if (*count == 0) | |
2115 | return LDPS_OK; | |
2116 | ||
2117 | *wrap_symbols = new const char *[*count]; | |
2118 | int i = 0; | |
2119 | for (options::String_set::const_iterator | |
2120 | it = parameters->options().wrap_begin(); | |
2121 | it != parameters->options().wrap_end(); ++it, ++i) { | |
2122 | (*wrap_symbols)[i] = it->c_str(); | |
2123 | } | |
2124 | return LDPS_OK; | |
2125 | } | |
2126 | ||
82838bd6 | 2127 | |
e9552f7e ST |
2128 | // Specify the ordering of sections in the final layout. The sections are |
2129 | // specified as (handle,shndx) pairs in the two arrays in the order in | |
2130 | // which they should appear in the final layout. | |
2131 | ||
2132 | static enum ld_plugin_status | |
f0558624 | 2133 | update_section_order(const struct ld_plugin_section* section_list, |
e9552f7e ST |
2134 | unsigned int num_sections) |
2135 | { | |
2136 | gold_assert(parameters->options().has_plugins()); | |
2137 | ||
2138 | if (num_sections == 0) | |
2139 | return LDPS_OK; | |
2140 | ||
2141 | if (section_list == NULL) | |
2142 | return LDPS_ERR; | |
2143 | ||
f0558624 ST |
2144 | Layout* layout = parameters->options().plugins()->layout(); |
2145 | gold_assert (layout != NULL); | |
e9552f7e | 2146 | |
f0558624 ST |
2147 | std::map<Section_id, unsigned int>* order_map |
2148 | = layout->get_section_order_map(); | |
2149 | ||
2150 | /* Store the mapping from Section_id to section position in layout's | |
2151 | order_map to consult after output sections are added. */ | |
e9552f7e ST |
2152 | for (unsigned int i = 0; i < num_sections; ++i) |
2153 | { | |
2154 | Object* obj = parameters->options().plugins()->get_elf_object( | |
2155 | section_list[i].handle); | |
efc6fa12 | 2156 | if (obj == NULL || obj->is_dynamic()) |
e9552f7e ST |
2157 | return LDPS_BAD_HANDLE; |
2158 | unsigned int shndx = section_list[i].shndx; | |
efc6fa12 | 2159 | Section_id secn_id(static_cast<Relobj*>(obj), shndx); |
f0558624 | 2160 | (*order_map)[secn_id] = i + 1; |
e9552f7e ST |
2161 | } |
2162 | ||
e9552f7e ST |
2163 | return LDPS_OK; |
2164 | } | |
2165 | ||
2166 | // Let the linker know that the sections could be reordered. | |
2167 | ||
2168 | static enum ld_plugin_status | |
2169 | allow_section_ordering() | |
2170 | { | |
2171 | gold_assert(parameters->options().has_plugins()); | |
2172 | Layout* layout = parameters->options().plugins()->layout(); | |
2173 | layout->set_section_ordering_specified(); | |
2174 | return LDPS_OK; | |
2175 | } | |
2176 | ||
16164a6b ST |
2177 | // Let the linker know that a subset of sections could be mapped |
2178 | // to a unique segment. | |
2179 | ||
2180 | static enum ld_plugin_status | |
2181 | allow_unique_segment_for_sections() | |
2182 | { | |
2183 | gold_assert(parameters->options().has_plugins()); | |
2184 | Layout* layout = parameters->options().plugins()->layout(); | |
2185 | layout->set_unique_segment_for_sections_specified(); | |
2186 | return LDPS_OK; | |
2187 | } | |
2188 | ||
2189 | // This function should map the list of sections specified in the | |
2190 | // SECTION_LIST to a unique segment. ELF segments do not have names | |
2191 | // and the NAME is used to identify Output Section which should contain | |
2192 | // the list of sections. This Output Section will then be mapped to | |
2193 | // a unique segment. FLAGS is used to specify if any additional segment | |
2194 | // flags need to be set. For instance, a specific segment flag can be | |
2195 | // set to identify this segment. Unsetting segment flags is not possible. | |
2196 | // ALIGN specifies the alignment of the segment. | |
2197 | ||
2198 | static enum ld_plugin_status | |
2199 | unique_segment_for_sections(const char* segment_name, | |
2200 | uint64_t flags, | |
2201 | uint64_t align, | |
2202 | const struct ld_plugin_section* section_list, | |
2203 | unsigned int num_sections) | |
2204 | { | |
2205 | gold_assert(parameters->options().has_plugins()); | |
2206 | ||
2207 | if (num_sections == 0) | |
2208 | return LDPS_OK; | |
2209 | ||
2210 | if (section_list == NULL) | |
2211 | return LDPS_ERR; | |
2212 | ||
2213 | Layout* layout = parameters->options().plugins()->layout(); | |
2214 | gold_assert (layout != NULL); | |
2215 | ||
2216 | Layout::Unique_segment_info* s = new Layout::Unique_segment_info; | |
2217 | s->name = segment_name; | |
2218 | s->flags = flags; | |
2219 | s->align = align; | |
2220 | ||
2221 | for (unsigned int i = 0; i < num_sections; ++i) | |
2222 | { | |
2223 | Object* obj = parameters->options().plugins()->get_elf_object( | |
2224 | section_list[i].handle); | |
efc6fa12 | 2225 | if (obj == NULL || obj->is_dynamic()) |
16164a6b ST |
2226 | return LDPS_BAD_HANDLE; |
2227 | unsigned int shndx = section_list[i].shndx; | |
efc6fa12 | 2228 | Const_section_id secn_id(static_cast<Relobj*>(obj), shndx); |
16164a6b ST |
2229 | layout->insert_section_segment_map(secn_id, s); |
2230 | } | |
2231 | ||
2232 | return LDPS_OK; | |
2233 | } | |
2234 | ||
c4e64843 SC |
2235 | // Register a new_input handler. |
2236 | ||
2237 | static enum ld_plugin_status | |
2238 | register_new_input(ld_plugin_new_input_handler handler) | |
2239 | { | |
2240 | gold_assert(parameters->options().has_plugins()); | |
2241 | parameters->options().plugins()->set_new_input_handler(handler); | |
2242 | return LDPS_OK; | |
2243 | } | |
2244 | ||
89fc3421 CC |
2245 | #endif // ENABLE_PLUGINS |
2246 | ||
2247 | // Allocate a Pluginobj object of the appropriate size and endianness. | |
2248 | ||
2249 | static Pluginobj* | |
291158a3 CC |
2250 | make_sized_plugin_object(const std::string& filename, |
2251 | Input_file* input_file, off_t offset, off_t filesize) | |
89fc3421 | 2252 | { |
89fc3421 CC |
2253 | Pluginobj* obj = NULL; |
2254 | ||
029ba973 ILT |
2255 | parameters_force_valid_target(); |
2256 | const Target& target(parameters->target()); | |
89fc3421 | 2257 | |
029ba973 | 2258 | if (target.get_size() == 32) |
89fc3421 | 2259 | { |
029ba973 | 2260 | if (target.is_big_endian()) |
92f03fcb | 2261 | #ifdef HAVE_TARGET_32_BIG |
291158a3 CC |
2262 | obj = new Sized_pluginobj<32, true>(filename, input_file, |
2263 | offset, filesize); | |
92f03fcb CC |
2264 | #else |
2265 | gold_error(_("%s: not configured to support " | |
2266 | "32-bit big-endian object"), | |
291158a3 | 2267 | filename.c_str()); |
89fc3421 | 2268 | #endif |
89fc3421 | 2269 | else |
92f03fcb | 2270 | #ifdef HAVE_TARGET_32_LITTLE |
291158a3 CC |
2271 | obj = new Sized_pluginobj<32, false>(filename, input_file, |
2272 | offset, filesize); | |
92f03fcb CC |
2273 | #else |
2274 | gold_error(_("%s: not configured to support " | |
2275 | "32-bit little-endian object"), | |
291158a3 | 2276 | filename.c_str()); |
89fc3421 CC |
2277 | #endif |
2278 | } | |
029ba973 | 2279 | else if (target.get_size() == 64) |
89fc3421 | 2280 | { |
029ba973 | 2281 | if (target.is_big_endian()) |
92f03fcb | 2282 | #ifdef HAVE_TARGET_64_BIG |
291158a3 CC |
2283 | obj = new Sized_pluginobj<64, true>(filename, input_file, |
2284 | offset, filesize); | |
92f03fcb CC |
2285 | #else |
2286 | gold_error(_("%s: not configured to support " | |
2287 | "64-bit big-endian object"), | |
291158a3 | 2288 | filename.c_str()); |
89fc3421 | 2289 | #endif |
89fc3421 | 2290 | else |
92f03fcb | 2291 | #ifdef HAVE_TARGET_64_LITTLE |
291158a3 CC |
2292 | obj = new Sized_pluginobj<64, false>(filename, input_file, |
2293 | offset, filesize); | |
92f03fcb CC |
2294 | #else |
2295 | gold_error(_("%s: not configured to support " | |
2296 | "64-bit little-endian object"), | |
291158a3 | 2297 | filename.c_str()); |
89fc3421 CC |
2298 | #endif |
2299 | } | |
2300 | ||
2301 | gold_assert(obj != NULL); | |
89fc3421 CC |
2302 | return obj; |
2303 | } | |
2304 | ||
2305 | } // End namespace gold. |