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3ce2c28e ILT |
1 | // inremental.h -- incremental linking support for gold -*- C++ -*- |
2 | ||
b3adc24a | 3 | // Copyright (C) 2009-2020 Free Software Foundation, Inc. |
3ce2c28e ILT |
4 | // Written by Mikolaj Zalewski <mikolajz@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 | ||
23 | #ifndef GOLD_INCREMENTAL_H | |
24 | #define GOLD_INCREMENTAL_H | |
25 | ||
072fe7ce | 26 | #include <map> |
3ce2c28e ILT |
27 | #include <vector> |
28 | ||
c549a694 | 29 | #include "elfcpp_file.h" |
3ce2c28e ILT |
30 | #include "stringpool.h" |
31 | #include "workqueue.h" | |
98fa85cb | 32 | #include "fileread.h" |
c549a694 | 33 | #include "output.h" |
cdc29364 | 34 | #include "archive.h" |
3ce2c28e ILT |
35 | |
36 | namespace gold | |
37 | { | |
38 | ||
3ce2c28e ILT |
39 | class Input_argument; |
40 | class Incremental_inputs_checker; | |
09ec0418 CC |
41 | class Incremental_script_entry; |
42 | class Incremental_object_entry; | |
0f1c85a6 | 43 | class Incremental_dynobj_entry; |
09ec0418 CC |
44 | class Incremental_archive_entry; |
45 | class Incremental_inputs; | |
b961d0d7 | 46 | class Incremental_binary; |
cdc29364 | 47 | class Incremental_library; |
3ce2c28e | 48 | class Object; |
3ce2c28e | 49 | |
072fe7ce ILT |
50 | // Incremental input type as stored in .gnu_incremental_inputs. |
51 | ||
52 | enum Incremental_input_type | |
53 | { | |
072fe7ce | 54 | INCREMENTAL_INPUT_OBJECT = 1, |
09ec0418 CC |
55 | INCREMENTAL_INPUT_ARCHIVE_MEMBER = 2, |
56 | INCREMENTAL_INPUT_ARCHIVE = 3, | |
57 | INCREMENTAL_INPUT_SHARED_LIBRARY = 4, | |
58 | INCREMENTAL_INPUT_SCRIPT = 5 | |
ca55d848 RÁE |
59 | }; |
60 | ||
cdc29364 CC |
61 | // Incremental input file flags. |
62 | // The input file type is stored in the lower eight bits. | |
63 | ||
64 | enum Incremental_input_flags | |
65 | { | |
0f1c85a6 CC |
66 | INCREMENTAL_INPUT_IN_SYSTEM_DIR = 0x8000, |
67 | INCREMENTAL_INPUT_AS_NEEDED = 0x4000 | |
cdc29364 CC |
68 | }; |
69 | ||
26d3c67d CC |
70 | // Symbol flags for the incremental symbol table. |
71 | // These flags are stored in the top two bits of | |
72 | // the symbol index field. | |
73 | ||
74 | enum Incremental_shlib_symbol_flags | |
75 | { | |
76 | // Symbol is defined in this library. | |
77 | INCREMENTAL_SHLIB_SYM_DEF = 2, | |
78 | // Symbol is defined in this library, with a COPY relocation. | |
79 | INCREMENTAL_SHLIB_SYM_COPY = 3 | |
80 | }; | |
81 | ||
82 | static const int INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT = 30; | |
83 | ||
0c9350c8 | 84 | // Return TRUE if a section of type SH_TYPE can be updated in place |
aa06ae28 CC |
85 | // during an incremental update. |
86 | bool | |
87 | can_incremental_update(unsigned int sh_type); | |
88 | ||
c549a694 ILT |
89 | // Create an Incremental_binary object for FILE. Returns NULL is this is not |
90 | // possible, e.g. FILE is not an ELF file or has an unsupported target. | |
09ec0418 | 91 | |
c549a694 ILT |
92 | Incremental_binary* |
93 | open_incremental_binary(Output_file* file); | |
94 | ||
09ec0418 CC |
95 | // Base class for recording each input file. |
96 | ||
97 | class Incremental_input_entry | |
98 | { | |
99 | public: | |
cdc29364 CC |
100 | Incremental_input_entry(Stringpool::Key filename_key, unsigned int arg_serial, |
101 | Timespec mtime) | |
4829d394 | 102 | : filename_key_(filename_key), file_index_(0), offset_(0), info_offset_(0), |
0f1c85a6 CC |
103 | arg_serial_(arg_serial), mtime_(mtime), is_in_system_directory_(false), |
104 | as_needed_(false) | |
09ec0418 CC |
105 | { } |
106 | ||
b56648ad ILT |
107 | virtual |
108 | ~Incremental_input_entry() | |
109 | { } | |
110 | ||
09ec0418 CC |
111 | // Return the type of input file. |
112 | Incremental_input_type | |
113 | type() const | |
114 | { return this->do_type(); } | |
115 | ||
4829d394 | 116 | // Set the index and section offset of this input file entry. |
09ec0418 | 117 | void |
4829d394 CC |
118 | set_offset(unsigned int file_index, unsigned int offset) |
119 | { | |
120 | this->file_index_ = file_index; | |
121 | this->offset_ = offset; | |
122 | } | |
09ec0418 CC |
123 | |
124 | // Set the section offset of the supplemental information for this entry. | |
125 | void | |
126 | set_info_offset(unsigned int info_offset) | |
127 | { this->info_offset_ = info_offset; } | |
128 | ||
4829d394 CC |
129 | // Get the index of this input file entry. |
130 | unsigned int | |
131 | get_file_index() const | |
132 | { return this->file_index_; } | |
133 | ||
09ec0418 CC |
134 | // Get the section offset of this input file entry. |
135 | unsigned int | |
136 | get_offset() const | |
137 | { return this->offset_; } | |
138 | ||
139 | // Get the section offset of the supplemental information for this entry. | |
140 | unsigned int | |
141 | get_info_offset() const | |
142 | { return this->info_offset_; } | |
143 | ||
144 | // Get the stringpool key for the input filename. | |
145 | Stringpool::Key | |
146 | get_filename_key() const | |
147 | { return this->filename_key_; } | |
148 | ||
cdc29364 CC |
149 | // Get the serial number of the input file. |
150 | unsigned int | |
151 | arg_serial() const | |
152 | { return this->arg_serial_; } | |
153 | ||
09ec0418 CC |
154 | // Get the modification time of the input file. |
155 | const Timespec& | |
156 | get_mtime() const | |
157 | { return this->mtime_; } | |
158 | ||
cdc29364 CC |
159 | // Record that the file was found in a system directory. |
160 | void | |
161 | set_is_in_system_directory() | |
162 | { this->is_in_system_directory_ = true; } | |
163 | ||
164 | // Return TRUE if the file was found in a system directory. | |
165 | bool | |
166 | is_in_system_directory() const | |
167 | { return this->is_in_system_directory_; } | |
168 | ||
0f1c85a6 CC |
169 | // Record that the file was linked with --as-needed. |
170 | void | |
171 | set_as_needed() | |
172 | { this->as_needed_ = true; } | |
173 | ||
174 | // Return TRUE if the file was linked with --as-needed. | |
175 | bool | |
176 | as_needed() const | |
177 | { return this->as_needed_; } | |
178 | ||
09ec0418 CC |
179 | // Return a pointer to the derived Incremental_script_entry object. |
180 | // Return NULL for input entries that are not script files. | |
181 | Incremental_script_entry* | |
182 | script_entry() | |
183 | { return this->do_script_entry(); } | |
184 | ||
185 | // Return a pointer to the derived Incremental_object_entry object. | |
186 | // Return NULL for input entries that are not object files. | |
187 | Incremental_object_entry* | |
188 | object_entry() | |
189 | { return this->do_object_entry(); } | |
190 | ||
0f1c85a6 CC |
191 | // Return a pointer to the derived Incremental_dynobj_entry object. |
192 | // Return NULL for input entries that are not shared object files. | |
193 | Incremental_dynobj_entry* | |
194 | dynobj_entry() | |
195 | { return this->do_dynobj_entry(); } | |
196 | ||
09ec0418 CC |
197 | // Return a pointer to the derived Incremental_archive_entry object. |
198 | // Return NULL for input entries that are not archive files. | |
199 | Incremental_archive_entry* | |
200 | archive_entry() | |
201 | { return this->do_archive_entry(); } | |
202 | ||
203 | protected: | |
204 | // Return the type of input file. | |
205 | virtual Incremental_input_type | |
206 | do_type() const = 0; | |
207 | ||
208 | // Return a pointer to the derived Incremental_script_entry object. | |
209 | // Return NULL for input entries that are not script files. | |
210 | virtual Incremental_script_entry* | |
211 | do_script_entry() | |
212 | { return NULL; } | |
213 | ||
214 | // Return a pointer to the derived Incremental_object_entry object. | |
215 | // Return NULL for input entries that are not object files. | |
216 | virtual Incremental_object_entry* | |
217 | do_object_entry() | |
218 | { return NULL; } | |
219 | ||
0f1c85a6 CC |
220 | // Return a pointer to the derived Incremental_dynobj_entry object. |
221 | // Return NULL for input entries that are not shared object files. | |
222 | virtual Incremental_dynobj_entry* | |
223 | do_dynobj_entry() | |
224 | { return NULL; } | |
225 | ||
09ec0418 CC |
226 | // Return a pointer to the derived Incremental_archive_entry object. |
227 | // Return NULL for input entries that are not archive files. | |
228 | virtual Incremental_archive_entry* | |
229 | do_archive_entry() | |
230 | { return NULL; } | |
231 | ||
232 | private: | |
233 | // Key of the filename string in the section stringtable. | |
234 | Stringpool::Key filename_key_; | |
235 | ||
4829d394 CC |
236 | // Index of the entry in the output section. |
237 | unsigned int file_index_; | |
238 | ||
09ec0418 CC |
239 | // Offset of the entry in the output section. |
240 | unsigned int offset_; | |
241 | ||
242 | // Offset of the extra information in the output section. | |
243 | unsigned int info_offset_; | |
244 | ||
cdc29364 CC |
245 | // Serial number of the file in the argument list. |
246 | unsigned int arg_serial_; | |
247 | ||
09ec0418 CC |
248 | // Last modification time of the file. |
249 | Timespec mtime_; | |
cdc29364 CC |
250 | |
251 | // TRUE if the file was found in a system directory. | |
252 | bool is_in_system_directory_; | |
0f1c85a6 CC |
253 | |
254 | // TRUE if the file was linked with --as-needed. | |
255 | bool as_needed_; | |
cdc29364 CC |
256 | }; |
257 | ||
258 | // Information about a script input that will persist during the whole linker | |
259 | // run. Needed only during an incremental build to retrieve the input files | |
260 | // added by this script. | |
261 | ||
262 | class Script_info | |
263 | { | |
264 | public: | |
265 | Script_info(const std::string& filename) | |
e24719f6 CC |
266 | : filename_(filename), input_file_index_(0), |
267 | incremental_script_entry_(NULL) | |
268 | { } | |
269 | ||
270 | Script_info(const std::string& filename, unsigned int input_file_index) | |
271 | : filename_(filename), input_file_index_(input_file_index), | |
272 | incremental_script_entry_(NULL) | |
cdc29364 CC |
273 | { } |
274 | ||
275 | // Store a pointer to the incremental information for this script. | |
276 | void | |
277 | set_incremental_info(Incremental_script_entry* entry) | |
278 | { this->incremental_script_entry_ = entry; } | |
279 | ||
280 | // Return the filename. | |
281 | const std::string& | |
282 | filename() const | |
283 | { return this->filename_; } | |
284 | ||
e24719f6 CC |
285 | // Return the input file index. |
286 | unsigned int | |
287 | input_file_index() const | |
288 | { return this->input_file_index_; } | |
289 | ||
cdc29364 CC |
290 | // Return the pointer to the incremental information for this script. |
291 | Incremental_script_entry* | |
292 | incremental_info() const | |
293 | { return this->incremental_script_entry_; } | |
294 | ||
295 | private: | |
296 | const std::string filename_; | |
e24719f6 | 297 | unsigned int input_file_index_; |
cdc29364 | 298 | Incremental_script_entry* incremental_script_entry_; |
09ec0418 CC |
299 | }; |
300 | ||
301 | // Class for recording input scripts. | |
302 | ||
303 | class Incremental_script_entry : public Incremental_input_entry | |
304 | { | |
305 | public: | |
cdc29364 | 306 | Incremental_script_entry(Stringpool::Key filename_key, |
43819297 | 307 | unsigned int arg_serial, Script_info* /*script*/, |
09ec0418 | 308 | Timespec mtime) |
cdc29364 | 309 | : Incremental_input_entry(filename_key, arg_serial, mtime), |
43819297 | 310 | objects_() |
09ec0418 CC |
311 | { } |
312 | ||
c7975edd CC |
313 | // Add a member object to the archive. |
314 | void | |
315 | add_object(Incremental_input_entry* obj_entry) | |
316 | { | |
317 | this->objects_.push_back(obj_entry); | |
318 | } | |
319 | ||
320 | // Return the number of objects included by this script. | |
321 | unsigned int | |
322 | get_object_count() | |
323 | { return this->objects_.size(); } | |
324 | ||
325 | // Return the Nth object. | |
326 | Incremental_input_entry* | |
327 | get_object(unsigned int n) | |
328 | { | |
329 | gold_assert(n < this->objects_.size()); | |
330 | return this->objects_[n]; | |
331 | } | |
332 | ||
09ec0418 CC |
333 | protected: |
334 | virtual Incremental_input_type | |
335 | do_type() const | |
336 | { return INCREMENTAL_INPUT_SCRIPT; } | |
337 | ||
338 | // Return a pointer to the derived Incremental_script_entry object. | |
339 | virtual Incremental_script_entry* | |
340 | do_script_entry() | |
341 | { return this; } | |
342 | ||
343 | private: | |
c7975edd CC |
344 | // Objects that have been included by this script. |
345 | std::vector<Incremental_input_entry*> objects_; | |
09ec0418 CC |
346 | }; |
347 | ||
348 | // Class for recording input object files. | |
349 | ||
350 | class Incremental_object_entry : public Incremental_input_entry | |
351 | { | |
352 | public: | |
353 | Incremental_object_entry(Stringpool::Key filename_key, Object* obj, | |
cdc29364 CC |
354 | unsigned int arg_serial, Timespec mtime) |
355 | : Incremental_input_entry(filename_key, arg_serial, mtime), obj_(obj), | |
89d8a36b | 356 | is_member_(false), sections_(), groups_() |
0f1c85a6 | 357 | { this->sections_.reserve(obj->shnum()); } |
09ec0418 CC |
358 | |
359 | // Get the object. | |
360 | Object* | |
361 | object() const | |
362 | { return this->obj_; } | |
363 | ||
364 | // Record that this object is an archive member. | |
365 | void | |
366 | set_is_member() | |
367 | { this->is_member_ = true; } | |
368 | ||
369 | // Return true if this object is an archive member. | |
370 | bool | |
371 | is_member() const | |
372 | { return this->is_member_; } | |
373 | ||
374 | // Add an input section. | |
375 | void | |
376 | add_input_section(unsigned int shndx, Stringpool::Key name_key, off_t sh_size) | |
cdc29364 | 377 | { this->sections_.push_back(Input_section(shndx, name_key, sh_size)); } |
09ec0418 CC |
378 | |
379 | // Return the number of input sections in this object. | |
380 | unsigned int | |
381 | get_input_section_count() const | |
382 | { return this->sections_.size(); } | |
383 | ||
cdc29364 CC |
384 | // Return the input section index for the Nth input section. |
385 | Stringpool::Key | |
386 | get_input_section_index(unsigned int n) const | |
387 | { return this->sections_[n].shndx_; } | |
388 | ||
09ec0418 CC |
389 | // Return the stringpool key of the Nth input section. |
390 | Stringpool::Key | |
391 | get_input_section_name_key(unsigned int n) const | |
cdc29364 | 392 | { return this->sections_[n].name_key_; } |
09ec0418 CC |
393 | |
394 | // Return the size of the Nth input section. | |
395 | off_t | |
396 | get_input_section_size(unsigned int n) const | |
cdc29364 | 397 | { return this->sections_[n].sh_size_; } |
09ec0418 | 398 | |
89d8a36b CC |
399 | // Add a kept COMDAT group. |
400 | void | |
401 | add_comdat_group(Stringpool::Key signature_key) | |
402 | { this->groups_.push_back(signature_key); } | |
403 | ||
404 | // Return the number of COMDAT groups. | |
405 | unsigned int | |
406 | get_comdat_group_count() const | |
407 | { return this->groups_.size(); } | |
408 | ||
409 | // Return the stringpool key for the signature of the Nth comdat group. | |
410 | Stringpool::Key | |
411 | get_comdat_signature_key(unsigned int n) const | |
412 | { return this->groups_[n]; } | |
413 | ||
09ec0418 CC |
414 | protected: |
415 | virtual Incremental_input_type | |
416 | do_type() const | |
417 | { | |
418 | return (this->is_member_ | |
419 | ? INCREMENTAL_INPUT_ARCHIVE_MEMBER | |
0f1c85a6 | 420 | : INCREMENTAL_INPUT_OBJECT); |
09ec0418 CC |
421 | } |
422 | ||
423 | // Return a pointer to the derived Incremental_object_entry object. | |
424 | virtual Incremental_object_entry* | |
425 | do_object_entry() | |
426 | { return this; } | |
427 | ||
428 | private: | |
429 | // The object file itself. | |
430 | Object* obj_; | |
431 | ||
432 | // Whether this object is an archive member. | |
433 | bool is_member_; | |
434 | ||
435 | // Input sections. | |
436 | struct Input_section | |
437 | { | |
cdc29364 CC |
438 | Input_section(unsigned int shndx, Stringpool::Key name_key, off_t sh_size) |
439 | : shndx_(shndx), name_key_(name_key), sh_size_(sh_size) | |
440 | { } | |
441 | unsigned int shndx_; | |
442 | Stringpool::Key name_key_; | |
443 | off_t sh_size_; | |
09ec0418 CC |
444 | }; |
445 | std::vector<Input_section> sections_; | |
89d8a36b CC |
446 | |
447 | // COMDAT groups. | |
448 | std::vector<Stringpool::Key> groups_; | |
09ec0418 CC |
449 | }; |
450 | ||
0f1c85a6 CC |
451 | // Class for recording shared library input files. |
452 | ||
453 | class Incremental_dynobj_entry : public Incremental_input_entry | |
454 | { | |
455 | public: | |
456 | Incremental_dynobj_entry(Stringpool::Key filename_key, | |
457 | Stringpool::Key soname_key, Object* obj, | |
458 | unsigned int arg_serial, Timespec mtime) | |
459 | : Incremental_input_entry(filename_key, arg_serial, mtime), | |
460 | soname_key_(soname_key), obj_(obj) | |
461 | { } | |
462 | ||
463 | // Get the object. | |
464 | Object* | |
465 | object() const | |
466 | { return this->obj_; } | |
467 | ||
468 | // Get the stringpool key for the soname. | |
469 | Stringpool::Key | |
470 | get_soname_key() const | |
471 | { return this->soname_key_; } | |
472 | ||
473 | protected: | |
474 | virtual Incremental_input_type | |
475 | do_type() const | |
476 | { return INCREMENTAL_INPUT_SHARED_LIBRARY; } | |
477 | ||
478 | // Return a pointer to the derived Incremental_dynobj_entry object. | |
479 | virtual Incremental_dynobj_entry* | |
480 | do_dynobj_entry() | |
481 | { return this; } | |
482 | ||
483 | private: | |
484 | // Key of the soname string in the section stringtable. | |
485 | Stringpool::Key soname_key_; | |
486 | ||
487 | // The object file itself. | |
488 | Object* obj_; | |
489 | }; | |
490 | ||
09ec0418 CC |
491 | // Class for recording archive library input files. |
492 | ||
493 | class Incremental_archive_entry : public Incremental_input_entry | |
494 | { | |
495 | public: | |
cdc29364 CC |
496 | Incremental_archive_entry(Stringpool::Key filename_key, |
497 | unsigned int arg_serial, Timespec mtime) | |
498 | : Incremental_input_entry(filename_key, arg_serial, mtime), members_(), | |
499 | unused_syms_() | |
09ec0418 CC |
500 | { } |
501 | ||
502 | // Add a member object to the archive. | |
503 | void | |
504 | add_object(Incremental_object_entry* obj_entry) | |
505 | { | |
506 | this->members_.push_back(obj_entry); | |
507 | obj_entry->set_is_member(); | |
508 | } | |
509 | ||
510 | // Add an unused global symbol to the archive. | |
511 | void | |
512 | add_unused_global_symbol(Stringpool::Key symbol_key) | |
513 | { this->unused_syms_.push_back(symbol_key); } | |
514 | ||
515 | // Return the number of member objects included in the link. | |
516 | unsigned int | |
517 | get_member_count() | |
518 | { return this->members_.size(); } | |
519 | ||
520 | // Return the Nth member object. | |
521 | Incremental_object_entry* | |
522 | get_member(unsigned int n) | |
523 | { return this->members_[n]; } | |
524 | ||
525 | // Return the number of unused global symbols in this archive. | |
526 | unsigned int | |
527 | get_unused_global_symbol_count() | |
528 | { return this->unused_syms_.size(); } | |
529 | ||
530 | // Return the Nth unused global symbol. | |
531 | Stringpool::Key | |
532 | get_unused_global_symbol(unsigned int n) | |
533 | { return this->unused_syms_[n]; } | |
534 | ||
535 | protected: | |
536 | virtual Incremental_input_type | |
537 | do_type() const | |
538 | { return INCREMENTAL_INPUT_ARCHIVE; } | |
539 | ||
540 | // Return a pointer to the derived Incremental_archive_entry object. | |
541 | virtual Incremental_archive_entry* | |
542 | do_archive_entry() | |
543 | { return this; } | |
544 | ||
545 | private: | |
546 | // Members of the archive that have been included in the link. | |
547 | std::vector<Incremental_object_entry*> members_; | |
548 | ||
549 | // Unused global symbols from this archive. | |
550 | std::vector<Stringpool::Key> unused_syms_; | |
551 | }; | |
552 | ||
3ce2c28e ILT |
553 | // This class contains the information needed during an incremental |
554 | // build about the inputs necessary to build the .gnu_incremental_inputs. | |
09ec0418 | 555 | |
3ce2c28e ILT |
556 | class Incremental_inputs |
557 | { | |
558 | public: | |
09ec0418 CC |
559 | typedef std::vector<Incremental_input_entry*> Input_list; |
560 | ||
3ce2c28e | 561 | Incremental_inputs() |
09ec0418 CC |
562 | : inputs_(), command_line_(), command_line_key_(0), |
563 | strtab_(new Stringpool()), current_object_(NULL), | |
564 | current_object_entry_(NULL), inputs_section_(NULL), | |
565 | symtab_section_(NULL), relocs_section_(NULL), | |
566 | reloc_count_(0) | |
3ce2c28e | 567 | { } |
09ec0418 | 568 | |
3ce2c28e ILT |
569 | ~Incremental_inputs() { delete this->strtab_; } |
570 | ||
571 | // Record the command line. | |
572 | void | |
573 | report_command_line(int argc, const char* const* argv); | |
072fe7ce | 574 | |
09ec0418 CC |
575 | // Record the initial info for archive file ARCHIVE. |
576 | void | |
cdc29364 CC |
577 | report_archive_begin(Library_base* arch, unsigned int arg_serial, |
578 | Script_info* script_info); | |
09ec0418 CC |
579 | |
580 | // Record the final info for archive file ARCHIVE. | |
581 | void | |
e0c52780 | 582 | report_archive_end(Library_base* arch); |
09ec0418 CC |
583 | |
584 | // Record the info for object file OBJ. If ARCH is not NULL, | |
585 | // attach the object file to the archive. | |
072fe7ce | 586 | void |
cdc29364 CC |
587 | report_object(Object* obj, unsigned int arg_serial, Library_base* arch, |
588 | Script_info* script_info); | |
072fe7ce | 589 | |
09ec0418 | 590 | // Record an input section belonging to object file OBJ. |
072fe7ce | 591 | void |
09ec0418 CC |
592 | report_input_section(Object* obj, unsigned int shndx, const char* name, |
593 | off_t sh_size); | |
072fe7ce | 594 | |
89d8a36b CC |
595 | // Record a kept COMDAT group belonging to object file OBJ. |
596 | void | |
597 | report_comdat_group(Object* obj, const char* name); | |
598 | ||
09ec0418 | 599 | // Record the info for input script SCRIPT. |
072fe7ce | 600 | void |
cdc29364 | 601 | report_script(Script_info* script, unsigned int arg_serial, |
09ec0418 CC |
602 | Timespec mtime); |
603 | ||
604 | // Return the running count of incremental relocations. | |
605 | unsigned int | |
606 | get_reloc_count() const | |
607 | { return this->reloc_count_; } | |
072fe7ce | 608 | |
09ec0418 | 609 | // Update the running count of incremental relocations. |
072fe7ce | 610 | void |
09ec0418 CC |
611 | set_reloc_count(unsigned int count) |
612 | { this->reloc_count_ = count; } | |
072fe7ce | 613 | |
3ce2c28e ILT |
614 | // Prepare for layout. Called from Layout::finalize. |
615 | void | |
616 | finalize(); | |
617 | ||
09ec0418 CC |
618 | // Create the .gnu_incremental_inputs and related sections. |
619 | void | |
620 | create_data_sections(Symbol_table* symtab); | |
621 | ||
622 | // Return the .gnu_incremental_inputs section. | |
3ce2c28e | 623 | Output_section_data* |
09ec0418 CC |
624 | inputs_section() const |
625 | { return this->inputs_section_; } | |
626 | ||
627 | // Return the .gnu_incremental_symtab section. | |
628 | Output_data_space* | |
629 | symtab_section() const | |
630 | { return this->symtab_section_; } | |
631 | ||
632 | // Return the .gnu_incremental_relocs section. | |
633 | Output_data_space* | |
634 | relocs_section() const | |
635 | { return this->relocs_section_; } | |
072fe7ce | 636 | |
0e70b911 CC |
637 | // Return the .gnu_incremental_got_plt section. |
638 | Output_data_space* | |
639 | got_plt_section() const | |
640 | { return this->got_plt_section_; } | |
641 | ||
072fe7ce | 642 | // Return the .gnu_incremental_strtab stringpool. |
3ce2c28e | 643 | Stringpool* |
09ec0418 | 644 | get_stringpool() const |
3ce2c28e ILT |
645 | { return this->strtab_; } |
646 | ||
c4aa1e2d ILT |
647 | // Return the canonical form of the command line, as will be stored in |
648 | // .gnu_incremental_strtab. | |
649 | const std::string& | |
09ec0418 | 650 | command_line() const |
c4aa1e2d ILT |
651 | { return this->command_line_; } |
652 | ||
09ec0418 CC |
653 | // Return the stringpool key of the command line. |
654 | Stringpool::Key | |
655 | command_line_key() const | |
656 | { return this->command_line_key_; } | |
657 | ||
658 | // Return the number of input files. | |
659 | int | |
660 | input_file_count() const | |
661 | { return this->inputs_.size(); } | |
662 | ||
663 | // Return the input files. | |
664 | const Input_list& | |
665 | input_files() const | |
c4aa1e2d ILT |
666 | { return this->inputs_; } |
667 | ||
09ec0418 CC |
668 | // Return the sh_entsize value for the .gnu_incremental_relocs section. |
669 | unsigned int | |
670 | relocs_entsize() const; | |
671 | ||
3ce2c28e | 672 | private: |
09ec0418 CC |
673 | // The list of input files. |
674 | Input_list inputs_; | |
072fe7ce | 675 | |
09ec0418 CC |
676 | // Canonical form of the command line, as will be stored in |
677 | // .gnu_incremental_strtab. | |
678 | std::string command_line_; | |
072fe7ce | 679 | |
09ec0418 CC |
680 | // The key of the command line string in the string pool. |
681 | Stringpool::Key command_line_key_; | |
682 | ||
683 | // The .gnu_incremental_strtab string pool associated with the | |
684 | // .gnu_incremental_inputs. | |
685 | Stringpool* strtab_; | |
686 | ||
687 | // Keep track of the object currently being processed. | |
688 | Object* current_object_; | |
689 | Incremental_object_entry* current_object_entry_; | |
690 | ||
691 | // The .gnu_incremental_inputs section. | |
692 | Output_section_data* inputs_section_; | |
072fe7ce | 693 | |
09ec0418 CC |
694 | // The .gnu_incremental_symtab section. |
695 | Output_data_space* symtab_section_; | |
696 | ||
697 | // The .gnu_incremental_relocs section. | |
698 | Output_data_space* relocs_section_; | |
699 | ||
0e70b911 CC |
700 | // The .gnu_incremental_got_plt section. |
701 | Output_data_space* got_plt_section_; | |
702 | ||
09ec0418 CC |
703 | // Total count of incremental relocations. Updated during Scan_relocs |
704 | // phase at the completion of each object file. | |
705 | unsigned int reloc_count_; | |
706 | }; | |
707 | ||
cdc29364 CC |
708 | // Reader class for global symbol info from an object file entry in |
709 | // the .gnu_incremental_inputs section. | |
710 | ||
711 | template<bool big_endian> | |
712 | class Incremental_global_symbol_reader | |
713 | { | |
714 | private: | |
715 | typedef elfcpp::Swap<32, big_endian> Swap32; | |
716 | ||
717 | public: | |
718 | Incremental_global_symbol_reader(const unsigned char* p) | |
719 | : p_(p) | |
720 | { } | |
721 | ||
722 | unsigned int | |
723 | output_symndx() const | |
724 | { return Swap32::readval(this->p_); } | |
725 | ||
726 | unsigned int | |
727 | shndx() const | |
728 | { return Swap32::readval(this->p_ + 4); } | |
729 | ||
730 | unsigned int | |
731 | next_offset() const | |
732 | { return Swap32::readval(this->p_ + 8); } | |
733 | ||
734 | unsigned int | |
735 | reloc_count() const | |
736 | { return Swap32::readval(this->p_ + 12); } | |
737 | ||
738 | unsigned int | |
739 | reloc_offset() const | |
740 | { return Swap32::readval(this->p_ + 16); } | |
741 | ||
742 | private: | |
743 | // Base address of the symbol entry. | |
744 | const unsigned char* p_; | |
745 | }; | |
746 | ||
09ec0418 CC |
747 | // Reader class for .gnu_incremental_inputs section. |
748 | ||
749 | template<int size, bool big_endian> | |
750 | class Incremental_inputs_reader | |
751 | { | |
752 | private: | |
753 | typedef elfcpp::Swap<size, big_endian> Swap; | |
754 | typedef elfcpp::Swap<16, big_endian> Swap16; | |
755 | typedef elfcpp::Swap<32, big_endian> Swap32; | |
756 | typedef elfcpp::Swap<64, big_endian> Swap64; | |
757 | ||
758 | public: | |
f038d496 CC |
759 | // Size of the .gnu_incremental_inputs header. |
760 | // (3 x 4-byte fields, plus 4 bytes padding.) | |
761 | static const unsigned int header_size = 16; | |
762 | // Size of an input file entry. | |
763 | // (2 x 4-byte fields, 1 x 12-byte field, 2 x 2-byte fields.) | |
764 | static const unsigned int input_entry_size = 24; | |
765 | // Size of the first part of the supplemental info block for | |
766 | // relocatable objects and archive members. | |
767 | // (7 x 4-byte fields, plus 4 bytes padding.) | |
768 | static const unsigned int object_info_size = 32; | |
769 | // Size of an input section entry. | |
770 | // (2 x 4-byte fields, 2 x address-sized fields.) | |
771 | static const unsigned int input_section_entry_size = 8 + 2 * size / 8; | |
772 | // Size of a global symbol entry in the supplemental info block. | |
773 | // (5 x 4-byte fields.) | |
774 | static const unsigned int global_sym_entry_size = 20; | |
775 | ||
b961d0d7 CC |
776 | Incremental_inputs_reader() |
777 | : p_(NULL), strtab_(NULL, 0), input_file_count_(0) | |
778 | { } | |
779 | ||
780 | Incremental_inputs_reader(const unsigned char* p, | |
781 | const elfcpp::Elf_strtab& strtab) | |
09ec0418 CC |
782 | : p_(p), strtab_(strtab) |
783 | { this->input_file_count_ = Swap32::readval(this->p_ + 4); } | |
784 | ||
785 | // Return the version number. | |
786 | unsigned int | |
787 | version() const | |
788 | { return Swap32::readval(this->p_); } | |
789 | ||
790 | // Return the count of input file entries. | |
791 | unsigned int | |
792 | input_file_count() const | |
793 | { return this->input_file_count_; } | |
794 | ||
795 | // Return the command line. | |
796 | const char* | |
797 | command_line() const | |
072fe7ce | 798 | { |
09ec0418 CC |
799 | unsigned int offset = Swap32::readval(this->p_ + 8); |
800 | return this->get_string(offset); | |
801 | } | |
072fe7ce | 802 | |
09ec0418 CC |
803 | // Reader class for an input file entry and its supplemental info. |
804 | class Incremental_input_entry_reader | |
805 | { | |
f038d496 CC |
806 | private: |
807 | static const unsigned int object_info_size = | |
808 | Incremental_inputs_reader<size, big_endian>::object_info_size; | |
809 | static const unsigned int input_section_entry_size = | |
810 | Incremental_inputs_reader<size, big_endian>::input_section_entry_size; | |
811 | static const unsigned int global_sym_entry_size = | |
812 | Incremental_inputs_reader<size, big_endian>::global_sym_entry_size; | |
813 | ||
09ec0418 CC |
814 | public: |
815 | Incremental_input_entry_reader(const Incremental_inputs_reader* inputs, | |
816 | unsigned int offset) | |
817 | : inputs_(inputs), offset_(offset) | |
818 | { | |
819 | this->info_offset_ = Swap32::readval(inputs->p_ + offset + 4); | |
cdc29364 | 820 | this->flags_ = Swap16::readval(this->inputs_->p_ + offset + 20); |
09ec0418 CC |
821 | } |
822 | ||
823 | // Return the filename. | |
824 | const char* | |
825 | filename() const | |
826 | { | |
827 | unsigned int offset = Swap32::readval(this->inputs_->p_ + this->offset_); | |
828 | return this->inputs_->get_string(offset); | |
829 | } | |
072fe7ce | 830 | |
cdc29364 CC |
831 | // Return the argument serial number. |
832 | unsigned int | |
833 | arg_serial() const | |
834 | { | |
835 | return Swap16::readval(this->inputs_->p_ + this->offset_ + 22); | |
836 | } | |
837 | ||
09ec0418 CC |
838 | // Return the timestamp. |
839 | Timespec | |
840 | get_mtime() const | |
841 | { | |
842 | Timespec t; | |
843 | const unsigned char* p = this->inputs_->p_ + this->offset_ + 8; | |
844 | t.seconds = Swap64::readval(p); | |
845 | t.nanoseconds = Swap32::readval(p+8); | |
846 | return t; | |
847 | } | |
848 | ||
849 | // Return the type of input file. | |
850 | Incremental_input_type | |
851 | type() const | |
cdc29364 CC |
852 | { return static_cast<Incremental_input_type>(this->flags_ & 0xff); } |
853 | ||
854 | // Return TRUE if the file was found in a system directory. | |
855 | bool | |
856 | is_in_system_directory() const | |
857 | { return (this->flags_ & INCREMENTAL_INPUT_IN_SYSTEM_DIR) != 0; } | |
09ec0418 | 858 | |
0f1c85a6 CC |
859 | // Return TRUE if the file was linked with --as-needed. |
860 | bool | |
861 | as_needed() const | |
862 | { return (this->flags_ & INCREMENTAL_INPUT_AS_NEEDED) != 0; } | |
863 | ||
09ec0418 CC |
864 | // Return the input section count -- for objects only. |
865 | unsigned int | |
866 | get_input_section_count() const | |
98fa85cb | 867 | { |
cdc29364 CC |
868 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT |
869 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
09ec0418 CC |
870 | return Swap32::readval(this->inputs_->p_ + this->info_offset_); |
871 | } | |
872 | ||
0f1c85a6 CC |
873 | // Return the soname -- for shared libraries only. |
874 | const char* | |
875 | get_soname() const | |
876 | { | |
877 | gold_assert(this->type() == INCREMENTAL_INPUT_SHARED_LIBRARY); | |
878 | unsigned int offset = Swap32::readval(this->inputs_->p_ | |
879 | + this->info_offset_); | |
880 | return this->inputs_->get_string(offset); | |
881 | } | |
882 | ||
09ec0418 CC |
883 | // Return the offset of the supplemental info for symbol SYMNDX -- |
884 | // for objects only. | |
885 | unsigned int | |
886 | get_symbol_offset(unsigned int symndx) const | |
887 | { | |
cdc29364 CC |
888 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT |
889 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
09ec0418 CC |
890 | |
891 | unsigned int section_count = this->get_input_section_count(); | |
f038d496 CC |
892 | return (this->info_offset_ |
893 | + this->object_info_size | |
894 | + section_count * this->input_section_entry_size | |
895 | + symndx * this->global_sym_entry_size); | |
09ec0418 CC |
896 | } |
897 | ||
898 | // Return the global symbol count -- for objects & shared libraries only. | |
899 | unsigned int | |
900 | get_global_symbol_count() const | |
901 | { | |
0f1c85a6 CC |
902 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT |
903 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER | |
904 | || this->type() == INCREMENTAL_INPUT_SHARED_LIBRARY); | |
905 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 4); | |
09ec0418 CC |
906 | } |
907 | ||
f0f9babf CC |
908 | // Return the offset of the first local symbol -- for objects only. |
909 | unsigned int | |
910 | get_local_symbol_offset() const | |
911 | { | |
912 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT | |
913 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
914 | ||
915 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 8); | |
916 | } | |
917 | ||
918 | // Return the local symbol count -- for objects only. | |
919 | unsigned int | |
920 | get_local_symbol_count() const | |
921 | { | |
922 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT | |
923 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
924 | ||
925 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 12); | |
926 | } | |
927 | ||
6fa2a40b CC |
928 | // Return the index of the first dynamic relocation -- for objects only. |
929 | unsigned int | |
930 | get_first_dyn_reloc() const | |
931 | { | |
932 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT | |
933 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
934 | ||
935 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 16); | |
936 | } | |
937 | ||
938 | // Return the dynamic relocation count -- for objects only. | |
939 | unsigned int | |
940 | get_dyn_reloc_count() const | |
941 | { | |
942 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT | |
943 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
944 | ||
945 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 20); | |
946 | } | |
947 | ||
89d8a36b CC |
948 | // Return the COMDAT group count -- for objects only. |
949 | unsigned int | |
950 | get_comdat_group_count() const | |
951 | { | |
952 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT | |
953 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
954 | ||
955 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 24); | |
956 | } | |
957 | ||
c7975edd CC |
958 | // Return the object count -- for scripts only. |
959 | unsigned int | |
960 | get_object_count() const | |
961 | { | |
cdc29364 | 962 | gold_assert(this->type() == INCREMENTAL_INPUT_SCRIPT); |
c7975edd CC |
963 | return Swap32::readval(this->inputs_->p_ + this->info_offset_); |
964 | } | |
965 | ||
966 | // Return the input file offset for object N -- for scripts only. | |
967 | unsigned int | |
968 | get_object_offset(unsigned int n) const | |
969 | { | |
cdc29364 | 970 | gold_assert(this->type() == INCREMENTAL_INPUT_SCRIPT); |
c7975edd CC |
971 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ |
972 | + 4 + n * 4); | |
973 | } | |
974 | ||
09ec0418 CC |
975 | // Return the member count -- for archives only. |
976 | unsigned int | |
977 | get_member_count() const | |
978 | { | |
cdc29364 | 979 | gold_assert(this->type() == INCREMENTAL_INPUT_ARCHIVE); |
09ec0418 CC |
980 | return Swap32::readval(this->inputs_->p_ + this->info_offset_); |
981 | } | |
44453f85 | 982 | |
09ec0418 CC |
983 | // Return the unused symbol count -- for archives only. |
984 | unsigned int | |
985 | get_unused_symbol_count() const | |
986 | { | |
cdc29364 | 987 | gold_assert(this->type() == INCREMENTAL_INPUT_ARCHIVE); |
09ec0418 CC |
988 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ + 4); |
989 | } | |
44453f85 | 990 | |
09ec0418 CC |
991 | // Return the input file offset for archive member N -- for archives only. |
992 | unsigned int | |
993 | get_member_offset(unsigned int n) const | |
994 | { | |
cdc29364 | 995 | gold_assert(this->type() == INCREMENTAL_INPUT_ARCHIVE); |
09ec0418 CC |
996 | return Swap32::readval(this->inputs_->p_ + this->info_offset_ |
997 | + 8 + n * 4); | |
998 | } | |
999 | ||
1000 | // Return the Nth unused global symbol -- for archives only. | |
1001 | const char* | |
1002 | get_unused_symbol(unsigned int n) const | |
1003 | { | |
cdc29364 | 1004 | gold_assert(this->type() == INCREMENTAL_INPUT_ARCHIVE); |
09ec0418 CC |
1005 | unsigned int member_count = this->get_member_count(); |
1006 | unsigned int offset = Swap32::readval(this->inputs_->p_ | |
1007 | + this->info_offset_ + 8 | |
1008 | + member_count * 4 | |
1009 | + n * 4); | |
1010 | return this->inputs_->get_string(offset); | |
1011 | } | |
1012 | ||
1013 | // Information about an input section. | |
1014 | struct Input_section_info | |
1015 | { | |
1016 | const char* name; | |
1017 | unsigned int output_shndx; | |
1018 | off_t sh_offset; | |
1019 | off_t sh_size; | |
98fa85cb | 1020 | }; |
072fe7ce | 1021 | |
09ec0418 CC |
1022 | // Return info about the Nth input section -- for objects only. |
1023 | Input_section_info | |
1024 | get_input_section(unsigned int n) const | |
1025 | { | |
1026 | Input_section_info info; | |
1027 | const unsigned char* p = (this->inputs_->p_ | |
f038d496 CC |
1028 | + this->info_offset_ |
1029 | + this->object_info_size | |
1030 | + n * this->input_section_entry_size); | |
09ec0418 CC |
1031 | unsigned int name_offset = Swap32::readval(p); |
1032 | info.name = this->inputs_->get_string(name_offset); | |
1033 | info.output_shndx = Swap32::readval(p + 4); | |
1034 | info.sh_offset = Swap::readval(p + 8); | |
1035 | info.sh_size = Swap::readval(p + 8 + size / 8); | |
1036 | return info; | |
1037 | } | |
1038 | ||
09ec0418 | 1039 | // Return info about the Nth global symbol -- for objects only. |
cdc29364 CC |
1040 | Incremental_global_symbol_reader<big_endian> |
1041 | get_global_symbol_reader(unsigned int n) const | |
09ec0418 | 1042 | { |
cdc29364 CC |
1043 | gold_assert(this->type() == INCREMENTAL_INPUT_OBJECT |
1044 | || this->type() == INCREMENTAL_INPUT_ARCHIVE_MEMBER); | |
09ec0418 CC |
1045 | unsigned int section_count = this->get_input_section_count(); |
1046 | const unsigned char* p = (this->inputs_->p_ | |
f038d496 CC |
1047 | + this->info_offset_ |
1048 | + this->object_info_size | |
1049 | + section_count * this->input_section_entry_size | |
1050 | + n * this->global_sym_entry_size); | |
cdc29364 CC |
1051 | return Incremental_global_symbol_reader<big_endian>(p); |
1052 | } | |
1053 | ||
89d8a36b CC |
1054 | // Return the signature of the Nth comdat group -- for objects only. |
1055 | const char* | |
1056 | get_comdat_group_signature(unsigned int n) const | |
1057 | { | |
1058 | unsigned int section_count = this->get_input_section_count(); | |
1059 | unsigned int symbol_count = this->get_global_symbol_count(); | |
1060 | const unsigned char* p = (this->inputs_->p_ | |
f038d496 CC |
1061 | + this->info_offset_ |
1062 | + this->object_info_size | |
1063 | + section_count * this->input_section_entry_size | |
1064 | + symbol_count * this->global_sym_entry_size | |
89d8a36b CC |
1065 | + n * 4); |
1066 | unsigned int name_offset = Swap32::readval(p); | |
1067 | return this->inputs_->get_string(name_offset); | |
1068 | } | |
1069 | ||
cdc29364 CC |
1070 | // Return the output symbol index for the Nth global symbol -- for shared |
1071 | // libraries only. Sets *IS_DEF to TRUE if the symbol is defined in this | |
26d3c67d CC |
1072 | // input file. Sets *IS_COPY to TRUE if the symbol was copied from this |
1073 | // input file with a COPY relocation. | |
cdc29364 | 1074 | unsigned int |
26d3c67d | 1075 | get_output_symbol_index(unsigned int n, bool* is_def, bool* is_copy) |
cdc29364 CC |
1076 | { |
1077 | gold_assert(this->type() == INCREMENTAL_INPUT_SHARED_LIBRARY); | |
1078 | const unsigned char* p = (this->inputs_->p_ | |
0f1c85a6 | 1079 | + this->info_offset_ + 8 |
cdc29364 CC |
1080 | + n * 4); |
1081 | unsigned int output_symndx = Swap32::readval(p); | |
26d3c67d CC |
1082 | unsigned int flags = output_symndx >> INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT; |
1083 | output_symndx &= ((1U << INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT) - 1); | |
1084 | switch (flags) | |
1085 | { | |
1086 | case INCREMENTAL_SHLIB_SYM_DEF: | |
1087 | *is_def = true; | |
1088 | *is_copy = false; | |
1089 | break; | |
1090 | case INCREMENTAL_SHLIB_SYM_COPY: | |
1091 | *is_def = true; | |
1092 | *is_copy = true; | |
1093 | break; | |
1094 | default: | |
1095 | *is_def = false; | |
1096 | *is_copy = false; | |
1097 | } | |
1098 | return output_symndx; | |
09ec0418 | 1099 | } |
44453f85 | 1100 | |
09ec0418 | 1101 | private: |
09ec0418 CC |
1102 | // The reader instance for the containing section. |
1103 | const Incremental_inputs_reader* inputs_; | |
cdc29364 CC |
1104 | // The flags, including the type of input file. |
1105 | unsigned int flags_; | |
09ec0418 CC |
1106 | // Section offset to the input file entry. |
1107 | unsigned int offset_; | |
1108 | // Section offset to the supplemental info for the input file. | |
1109 | unsigned int info_offset_; | |
072fe7ce ILT |
1110 | }; |
1111 | ||
cdc29364 CC |
1112 | // Return the offset of an input file entry given its index N. |
1113 | unsigned int | |
1114 | input_file_offset(unsigned int n) const | |
1115 | { | |
1116 | gold_assert(n < this->input_file_count_); | |
f038d496 | 1117 | return this->header_size + n * this->input_entry_size; |
cdc29364 CC |
1118 | } |
1119 | ||
1120 | // Return the index of an input file entry given its OFFSET. | |
1121 | unsigned int | |
1122 | input_file_index(unsigned int offset) const | |
1123 | { | |
f038d496 | 1124 | int n = ((offset - this->header_size) / this->input_entry_size); |
cdc29364 CC |
1125 | gold_assert(input_file_offset(n) == offset); |
1126 | return n; | |
1127 | } | |
1128 | ||
09ec0418 CC |
1129 | // Return a reader for the Nth input file entry. |
1130 | Incremental_input_entry_reader | |
1131 | input_file(unsigned int n) const | |
cdc29364 CC |
1132 | { return Incremental_input_entry_reader(this, this->input_file_offset(n)); } |
1133 | ||
1134 | // Return a reader for the input file entry at OFFSET. | |
1135 | Incremental_input_entry_reader | |
1136 | input_file_at_offset(unsigned int offset) const | |
09ec0418 | 1137 | { |
f038d496 CC |
1138 | gold_assert(offset < (this->header_size |
1139 | + this->input_file_count_ * this->input_entry_size)); | |
cdc29364 | 1140 | return Incremental_input_entry_reader(this, offset); |
09ec0418 CC |
1141 | } |
1142 | ||
94a3fc8b CC |
1143 | // Return a reader for the global symbol info at OFFSET. |
1144 | Incremental_global_symbol_reader<big_endian> | |
1145 | global_symbol_reader_at_offset(unsigned int offset) const | |
1146 | { | |
1147 | const unsigned char* p = this->p_ + offset; | |
1148 | return Incremental_global_symbol_reader<big_endian>(p); | |
1149 | } | |
1150 | ||
09ec0418 CC |
1151 | private: |
1152 | // Lookup a string in the ELF string table. | |
1153 | const char* get_string(unsigned int offset) const | |
1154 | { | |
1155 | const char* s; | |
1156 | if (this->strtab_.get_c_string(offset, &s)) | |
1157 | return s; | |
1158 | return NULL; | |
1159 | } | |
1160 | ||
1161 | // Base address of the .gnu_incremental_inputs section. | |
1162 | const unsigned char* p_; | |
1163 | // The associated ELF string table. | |
1164 | elfcpp::Elf_strtab strtab_; | |
1165 | // The number of input file entries in this section. | |
1166 | unsigned int input_file_count_; | |
1167 | }; | |
1168 | ||
1169 | // Reader class for the .gnu_incremental_symtab section. | |
072fe7ce | 1170 | |
09ec0418 CC |
1171 | template<bool big_endian> |
1172 | class Incremental_symtab_reader | |
1173 | { | |
1174 | public: | |
b961d0d7 CC |
1175 | Incremental_symtab_reader() |
1176 | : p_(NULL), len_(0) | |
1177 | { } | |
1178 | ||
1179 | Incremental_symtab_reader(const unsigned char* p, off_t len) | |
1180 | : p_(p), len_(len) | |
09ec0418 | 1181 | { } |
44453f85 | 1182 | |
b961d0d7 CC |
1183 | // Return the count of symbols in this section. |
1184 | unsigned int | |
1185 | symbol_count() const | |
1186 | { return static_cast<unsigned int>(this->len_ / 4); } | |
1187 | ||
09ec0418 | 1188 | // Return the list head for symbol table entry N. |
b961d0d7 CC |
1189 | unsigned int |
1190 | get_list_head(unsigned int n) const | |
09ec0418 | 1191 | { return elfcpp::Swap<32, big_endian>::readval(this->p_ + 4 * n); } |
072fe7ce | 1192 | |
09ec0418 CC |
1193 | private: |
1194 | // Base address of the .gnu_incremental_relocs section. | |
1195 | const unsigned char* p_; | |
b961d0d7 CC |
1196 | // Size of the section. |
1197 | off_t len_; | |
09ec0418 | 1198 | }; |
3ce2c28e | 1199 | |
09ec0418 | 1200 | // Reader class for the .gnu_incremental_relocs section. |
c4aa1e2d | 1201 | |
09ec0418 CC |
1202 | template<int size, bool big_endian> |
1203 | class Incremental_relocs_reader | |
1204 | { | |
1205 | private: | |
1206 | // Size of each field. | |
1207 | static const unsigned int field_size = size / 8; | |
c4aa1e2d | 1208 | |
09ec0418 CC |
1209 | public: |
1210 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
1211 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Addend; | |
1212 | ||
1213 | // Size of each entry. | |
1214 | static const unsigned int reloc_size = 8 + 2 * field_size; | |
1215 | ||
b961d0d7 CC |
1216 | Incremental_relocs_reader() |
1217 | : p_(NULL), len_(0) | |
1218 | { } | |
1219 | ||
1220 | Incremental_relocs_reader(const unsigned char* p, off_t len) | |
1221 | : p_(p), len_(len) | |
09ec0418 CC |
1222 | { } |
1223 | ||
b961d0d7 CC |
1224 | // Return the count of relocations in this section. |
1225 | unsigned int | |
1226 | reloc_count() const | |
1227 | { return static_cast<unsigned int>(this->len_ / reloc_size); } | |
1228 | ||
09ec0418 CC |
1229 | // Return the relocation type for relocation entry at offset OFF. |
1230 | unsigned int | |
0e70b911 | 1231 | get_r_type(unsigned int off) const |
cdc29364 | 1232 | { return elfcpp::Swap<32, big_endian>::readval(this->p_ + off); } |
09ec0418 CC |
1233 | |
1234 | // Return the output section index for relocation entry at offset OFF. | |
1235 | unsigned int | |
0e70b911 | 1236 | get_r_shndx(unsigned int off) const |
cdc29364 | 1237 | { return elfcpp::Swap<32, big_endian>::readval(this->p_ + off + 4); } |
09ec0418 CC |
1238 | |
1239 | // Return the output section offset for relocation entry at offset OFF. | |
1240 | Address | |
0e70b911 | 1241 | get_r_offset(unsigned int off) const |
cdc29364 | 1242 | { return elfcpp::Swap<size, big_endian>::readval(this->p_ + off + 8); } |
09ec0418 CC |
1243 | |
1244 | // Return the addend for relocation entry at offset OFF. | |
1245 | Addend | |
0e70b911 | 1246 | get_r_addend(unsigned int off) const |
09ec0418 CC |
1247 | { |
1248 | return elfcpp::Swap<size, big_endian>::readval(this->p_ + off + 8 | |
1249 | + this->field_size); | |
1250 | } | |
1251 | ||
cdc29364 CC |
1252 | // Return a pointer to the relocation entry at offset OFF. |
1253 | const unsigned char* | |
1254 | data(unsigned int off) const | |
1255 | { return this->p_ + off; } | |
1256 | ||
09ec0418 CC |
1257 | private: |
1258 | // Base address of the .gnu_incremental_relocs section. | |
1259 | const unsigned char* p_; | |
b961d0d7 CC |
1260 | // Size of the section. |
1261 | off_t len_; | |
3ce2c28e ILT |
1262 | }; |
1263 | ||
0e70b911 CC |
1264 | // Reader class for the .gnu_incremental_got_plt section. |
1265 | ||
1266 | template<bool big_endian> | |
1267 | class Incremental_got_plt_reader | |
1268 | { | |
1269 | public: | |
b961d0d7 CC |
1270 | Incremental_got_plt_reader() |
1271 | : p_(NULL), got_count_(0), got_desc_p_(NULL), plt_desc_p_(NULL) | |
1272 | { } | |
1273 | ||
0e70b911 CC |
1274 | Incremental_got_plt_reader(const unsigned char* p) : p_(p) |
1275 | { | |
1276 | this->got_count_ = elfcpp::Swap<32, big_endian>::readval(p); | |
1277 | this->got_desc_p_ = p + 8 + ((this->got_count_ + 3) & ~3); | |
6fa2a40b | 1278 | this->plt_desc_p_ = this->got_desc_p_ + this->got_count_ * 8; |
0e70b911 CC |
1279 | } |
1280 | ||
1281 | // Return the GOT entry count. | |
1282 | unsigned int | |
1283 | get_got_entry_count() const | |
1284 | { | |
1285 | return this->got_count_; | |
1286 | } | |
1287 | ||
1288 | // Return the PLT entry count. | |
1289 | unsigned int | |
1290 | get_plt_entry_count() const | |
1291 | { | |
1292 | return elfcpp::Swap<32, big_endian>::readval(this->p_ + 4); | |
1293 | } | |
1294 | ||
1295 | // Return the GOT type for GOT entry N. | |
1296 | unsigned int | |
1297 | get_got_type(unsigned int n) | |
1298 | { | |
1299 | return this->p_[8 + n]; | |
1300 | } | |
1301 | ||
6fa2a40b CC |
1302 | // Return the symbol index for GOT entry N. |
1303 | unsigned int | |
1304 | get_got_symndx(unsigned int n) | |
1305 | { | |
1306 | return elfcpp::Swap<32, big_endian>::readval(this->got_desc_p_ + n * 8); | |
1307 | } | |
1308 | ||
1309 | // Return the input file index for GOT entry N. | |
0e70b911 | 1310 | unsigned int |
6fa2a40b | 1311 | get_got_input_index(unsigned int n) |
0e70b911 | 1312 | { |
6fa2a40b | 1313 | return elfcpp::Swap<32, big_endian>::readval(this->got_desc_p_ + n * 8 + 4); |
0e70b911 CC |
1314 | } |
1315 | ||
1316 | // Return the PLT descriptor for PLT entry N. | |
1317 | unsigned int | |
1318 | get_plt_desc(unsigned int n) | |
1319 | { | |
1320 | return elfcpp::Swap<32, big_endian>::readval(this->plt_desc_p_ + n * 4); | |
1321 | } | |
1322 | ||
1323 | private: | |
1324 | // Base address of the .gnu_incremental_got_plt section. | |
1325 | const unsigned char* p_; | |
1326 | // GOT entry count. | |
1327 | unsigned int got_count_; | |
1328 | // Base address of the GOT descriptor array. | |
1329 | const unsigned char* got_desc_p_; | |
1330 | // Base address of the PLT descriptor array. | |
1331 | const unsigned char* plt_desc_p_; | |
1332 | }; | |
1333 | ||
b961d0d7 CC |
1334 | // An object representing the ELF file we edit during an incremental build. |
1335 | // Similar to Object or Dynobj, but operates on Output_file and contains | |
1336 | // methods to support incremental updating. This is the abstract parent class | |
1337 | // implemented in Sized_incremental_binary<size, big_endian> for a specific | |
1338 | // endianness and size. | |
1339 | ||
1340 | class Incremental_binary | |
1341 | { | |
1342 | public: | |
43819297 | 1343 | Incremental_binary(Output_file* output, Target* /*target*/) |
cdc29364 | 1344 | : input_args_map_(), library_map_(), script_map_(), |
43819297 | 1345 | output_(output) |
b961d0d7 CC |
1346 | { } |
1347 | ||
1348 | virtual | |
1349 | ~Incremental_binary() | |
1350 | { } | |
1351 | ||
1352 | // Check the .gnu_incremental_inputs section to see whether an incremental | |
1353 | // build is possible. | |
1354 | bool | |
cdc29364 CC |
1355 | check_inputs(const Command_line& cmdline, |
1356 | Incremental_inputs* incremental_inputs) | |
1357 | { return this->do_check_inputs(cmdline, incremental_inputs); } | |
b961d0d7 CC |
1358 | |
1359 | // Report an error. | |
1360 | void | |
1361 | error(const char* format, ...) const ATTRIBUTE_PRINTF_2; | |
1362 | ||
cdc29364 CC |
1363 | // Proxy class for a sized Incremental_input_entry_reader. |
1364 | ||
b961d0d7 CC |
1365 | class Input_reader |
1366 | { | |
1367 | public: | |
1368 | Input_reader() | |
1369 | { } | |
1370 | ||
a1893a82 CC |
1371 | Input_reader(const Input_reader&) |
1372 | { } | |
1373 | ||
b961d0d7 CC |
1374 | virtual |
1375 | ~Input_reader() | |
1376 | { } | |
1377 | ||
1378 | const char* | |
1379 | filename() const | |
1380 | { return this->do_filename(); } | |
1381 | ||
1382 | Timespec | |
1383 | get_mtime() const | |
1384 | { return this->do_get_mtime(); } | |
1385 | ||
1386 | Incremental_input_type | |
1387 | type() const | |
1388 | { return this->do_type(); } | |
1389 | ||
cdc29364 CC |
1390 | unsigned int |
1391 | arg_serial() const | |
1392 | { return this->do_arg_serial(); } | |
1393 | ||
1394 | unsigned int | |
1395 | get_unused_symbol_count() const | |
1396 | { return this->do_get_unused_symbol_count(); } | |
1397 | ||
1398 | const char* | |
1399 | get_unused_symbol(unsigned int n) const | |
1400 | { return this->do_get_unused_symbol(n); } | |
1401 | ||
b961d0d7 CC |
1402 | protected: |
1403 | virtual const char* | |
1404 | do_filename() const = 0; | |
1405 | ||
1406 | virtual Timespec | |
1407 | do_get_mtime() const = 0; | |
1408 | ||
1409 | virtual Incremental_input_type | |
1410 | do_type() const = 0; | |
cdc29364 CC |
1411 | |
1412 | virtual unsigned int | |
1413 | do_arg_serial() const = 0; | |
1414 | ||
1415 | virtual unsigned int | |
1416 | do_get_unused_symbol_count() const = 0; | |
1417 | ||
1418 | virtual const char* | |
1419 | do_get_unused_symbol(unsigned int n) const = 0; | |
b961d0d7 CC |
1420 | }; |
1421 | ||
cdc29364 CC |
1422 | // Return the number of input files. |
1423 | unsigned int | |
1424 | input_file_count() const | |
1425 | { return this->do_input_file_count(); } | |
1426 | ||
1427 | // Return an Input_reader for input file N. | |
1428 | const Input_reader* | |
1429 | get_input_reader(unsigned int n) const | |
1430 | { return this->do_get_input_reader(n); } | |
1431 | ||
1432 | // Return TRUE if the input file N has changed since the last link. | |
1433 | bool | |
1434 | file_has_changed(unsigned int n) const | |
1435 | { return this->do_file_has_changed(n); } | |
1436 | ||
1437 | // Return the Input_argument for input file N. Returns NULL if | |
1438 | // the Input_argument is not available. | |
1439 | const Input_argument* | |
1440 | get_input_argument(unsigned int n) const | |
1441 | { | |
1442 | const Input_reader* input_file = this->do_get_input_reader(n); | |
1443 | unsigned int arg_serial = input_file->arg_serial(); | |
1444 | if (arg_serial == 0 || arg_serial > this->input_args_map_.size()) | |
1445 | return NULL; | |
1446 | return this->input_args_map_[arg_serial - 1]; | |
1447 | } | |
1448 | ||
1449 | // Return an Incremental_library for the given input file. | |
1450 | Incremental_library* | |
e24719f6 | 1451 | get_library(unsigned int n) const |
cdc29364 CC |
1452 | { return this->library_map_[n]; } |
1453 | ||
1454 | // Return a Script_info for the given input file. | |
1455 | Script_info* | |
e24719f6 | 1456 | get_script_info(unsigned int n) const |
cdc29364 CC |
1457 | { return this->script_map_[n]; } |
1458 | ||
1459 | // Initialize the layout of the output file based on the existing | |
1460 | // output file. | |
1461 | void | |
1462 | init_layout(Layout* layout) | |
1463 | { this->do_init_layout(layout); } | |
1464 | ||
1465 | // Mark regions of the input file that must be kept unchanged. | |
1466 | void | |
1467 | reserve_layout(unsigned int input_file_index) | |
1468 | { this->do_reserve_layout(input_file_index); } | |
b961d0d7 | 1469 | |
4829d394 CC |
1470 | // Process the GOT and PLT entries from the existing output file. |
1471 | void | |
1472 | process_got_plt(Symbol_table* symtab, Layout* layout) | |
1473 | { this->do_process_got_plt(symtab, layout); } | |
1474 | ||
26d3c67d CC |
1475 | // Emit COPY relocations from the existing output file. |
1476 | void | |
1477 | emit_copy_relocs(Symbol_table* symtab) | |
1478 | { this->do_emit_copy_relocs(symtab); } | |
1479 | ||
94a3fc8b CC |
1480 | // Apply incremental relocations for symbols whose values have changed. |
1481 | void | |
1482 | apply_incremental_relocs(const Symbol_table* symtab, Layout* layout, | |
1483 | Output_file* of) | |
1484 | { this->do_apply_incremental_relocs(symtab, layout, of); } | |
1485 | ||
b961d0d7 CC |
1486 | // Functions and types for the elfcpp::Elf_file interface. This |
1487 | // permit us to use Incremental_binary as the File template parameter for | |
1488 | // elfcpp::Elf_file. | |
1489 | ||
1490 | // The View class is returned by view. It must support a single | |
1491 | // method, data(). This is trivial, because Output_file::get_output_view | |
1492 | // does what we need. | |
1493 | class View | |
1494 | { | |
1495 | public: | |
1496 | View(const unsigned char* p) | |
1497 | : p_(p) | |
1498 | { } | |
1499 | ||
1500 | const unsigned char* | |
1501 | data() const | |
1502 | { return this->p_; } | |
1503 | ||
1504 | private: | |
1505 | const unsigned char* p_; | |
1506 | }; | |
1507 | ||
1508 | // Return a View. | |
1509 | View | |
1510 | view(off_t file_offset, section_size_type data_size) | |
1511 | { return View(this->output_->get_input_view(file_offset, data_size)); } | |
1512 | ||
1513 | // A location in the file. | |
1514 | struct Location | |
1515 | { | |
1516 | off_t file_offset; | |
1517 | off_t data_size; | |
1518 | ||
1519 | Location(off_t fo, section_size_type ds) | |
1520 | : file_offset(fo), data_size(ds) | |
1521 | { } | |
1522 | ||
1523 | Location() | |
1524 | : file_offset(0), data_size(0) | |
1525 | { } | |
1526 | }; | |
1527 | ||
1528 | // Get a View given a Location. | |
1529 | View | |
1530 | view(Location loc) | |
1531 | { return View(this->view(loc.file_offset, loc.data_size)); } | |
1532 | ||
cdc29364 CC |
1533 | // Return the Output_file. |
1534 | Output_file* | |
1535 | output_file() | |
1536 | { return this->output_; } | |
1537 | ||
b961d0d7 CC |
1538 | protected: |
1539 | // Check the .gnu_incremental_inputs section to see whether an incremental | |
1540 | // build is possible. | |
1541 | virtual bool | |
cdc29364 CC |
1542 | do_check_inputs(const Command_line& cmdline, |
1543 | Incremental_inputs* incremental_inputs) = 0; | |
b961d0d7 | 1544 | |
cdc29364 | 1545 | // Return TRUE if input file N has changed since the last incremental link. |
b961d0d7 | 1546 | virtual bool |
cdc29364 CC |
1547 | do_file_has_changed(unsigned int n) const = 0; |
1548 | ||
1549 | // Initialize the layout of the output file based on the existing | |
1550 | // output file. | |
1551 | virtual void | |
1552 | do_init_layout(Layout* layout) = 0; | |
1553 | ||
1554 | // Mark regions of the input file that must be kept unchanged. | |
1555 | virtual void | |
1556 | do_reserve_layout(unsigned int input_file_index) = 0; | |
1557 | ||
4829d394 CC |
1558 | // Process the GOT and PLT entries from the existing output file. |
1559 | virtual void | |
1560 | do_process_got_plt(Symbol_table* symtab, Layout* layout) = 0; | |
1561 | ||
26d3c67d CC |
1562 | // Emit COPY relocations from the existing output file. |
1563 | virtual void | |
1564 | do_emit_copy_relocs(Symbol_table* symtab) = 0; | |
1565 | ||
94a3fc8b CC |
1566 | // Apply incremental relocations for symbols whose values have changed. |
1567 | virtual void | |
1568 | do_apply_incremental_relocs(const Symbol_table*, Layout*, Output_file*) = 0; | |
1569 | ||
cdc29364 CC |
1570 | virtual unsigned int |
1571 | do_input_file_count() const = 0; | |
b961d0d7 | 1572 | |
cdc29364 CC |
1573 | virtual const Input_reader* |
1574 | do_get_input_reader(unsigned int) const = 0; | |
1575 | ||
1576 | // Map from input file index to Input_argument. | |
1577 | std::vector<const Input_argument*> input_args_map_; | |
1578 | // Map from an input file index to an Incremental_library. | |
1579 | std::vector<Incremental_library*> library_map_; | |
1580 | // Map from an input file index to a Script_info. | |
1581 | std::vector<Script_info*> script_map_; | |
b961d0d7 CC |
1582 | |
1583 | private: | |
1584 | // Edited output file object. | |
1585 | Output_file* output_; | |
b961d0d7 CC |
1586 | }; |
1587 | ||
6fa2a40b CC |
1588 | template<int size, bool big_endian> |
1589 | class Sized_relobj_incr; | |
1590 | ||
b961d0d7 CC |
1591 | template<int size, bool big_endian> |
1592 | class Sized_incremental_binary : public Incremental_binary | |
1593 | { | |
1594 | public: | |
1595 | Sized_incremental_binary(Output_file* output, | |
1596 | const elfcpp::Ehdr<size, big_endian>& ehdr, | |
1597 | Target* target) | |
1598 | : Incremental_binary(output, target), elf_file_(this, ehdr), | |
26d3c67d CC |
1599 | input_objects_(), section_map_(), symbol_map_(), copy_relocs_(), |
1600 | main_symtab_loc_(), main_strtab_loc_(), has_incremental_info_(false), | |
1601 | inputs_reader_(), symtab_reader_(), relocs_reader_(), got_plt_reader_(), | |
cdc29364 | 1602 | input_entry_readers_() |
b961d0d7 CC |
1603 | { this->setup_readers(); } |
1604 | ||
1605 | // Returns TRUE if the file contains incremental info. | |
1606 | bool | |
1607 | has_incremental_info() const | |
1608 | { return this->has_incremental_info_; } | |
1609 | ||
6fa2a40b | 1610 | // Record a pointer to the object for input file N. |
4829d394 | 1611 | void |
6fa2a40b CC |
1612 | set_input_object(unsigned int n, |
1613 | Sized_relobj_incr<size, big_endian>* obj) | |
1614 | { this->input_objects_[n] = obj; } | |
4829d394 | 1615 | |
6fa2a40b CC |
1616 | // Return a pointer to the object for input file N. |
1617 | Sized_relobj_incr<size, big_endian>* | |
1618 | input_object(unsigned int n) const | |
4829d394 | 1619 | { |
6fa2a40b CC |
1620 | gold_assert(n < this->input_objects_.size()); |
1621 | return this->input_objects_[n]; | |
4829d394 CC |
1622 | } |
1623 | ||
cdc29364 CC |
1624 | // Return the Output_section for section index SHNDX. |
1625 | Output_section* | |
1626 | output_section(unsigned int shndx) | |
1627 | { return this->section_map_[shndx]; } | |
1628 | ||
4829d394 | 1629 | // Map a symbol table entry from the base file to the output symbol table. |
94a3fc8b CC |
1630 | // SYMNDX is relative to the first forced-local or global symbol in the |
1631 | // input file symbol table. | |
1632 | void | |
1633 | add_global_symbol(unsigned int symndx, Symbol* gsym) | |
1634 | { this->symbol_map_[symndx] = gsym; } | |
1635 | ||
4829d394 | 1636 | // Map a symbol table entry from the base file to the output symbol table. |
94a3fc8b CC |
1637 | // SYMNDX is relative to the first forced-local or global symbol in the |
1638 | // input file symbol table. | |
1639 | Symbol* | |
1640 | global_symbol(unsigned int symndx) const | |
1641 | { return this->symbol_map_[symndx]; } | |
1642 | ||
26d3c67d CC |
1643 | // Add a COPY relocation for a global symbol. |
1644 | void | |
1645 | add_copy_reloc(Symbol* gsym, Output_section* os, off_t offset) | |
1646 | { this->copy_relocs_.push_back(Copy_reloc(gsym, os, offset)); } | |
1647 | ||
b961d0d7 CC |
1648 | // Readers for the incremental info sections. |
1649 | ||
cdc29364 | 1650 | const Incremental_inputs_reader<size, big_endian>& |
b961d0d7 CC |
1651 | inputs_reader() const |
1652 | { return this->inputs_reader_; } | |
1653 | ||
cdc29364 | 1654 | const Incremental_symtab_reader<big_endian>& |
b961d0d7 CC |
1655 | symtab_reader() const |
1656 | { return this->symtab_reader_; } | |
1657 | ||
cdc29364 | 1658 | const Incremental_relocs_reader<size, big_endian>& |
b961d0d7 CC |
1659 | relocs_reader() const |
1660 | { return this->relocs_reader_; } | |
1661 | ||
cdc29364 | 1662 | const Incremental_got_plt_reader<big_endian>& |
b961d0d7 CC |
1663 | got_plt_reader() const |
1664 | { return this->got_plt_reader_; } | |
1665 | ||
cdc29364 CC |
1666 | void |
1667 | get_symtab_view(View* symtab_view, unsigned int* sym_count, | |
1668 | elfcpp::Elf_strtab* strtab); | |
1669 | ||
b961d0d7 | 1670 | protected: |
cdc29364 CC |
1671 | typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; |
1672 | typedef typename Inputs_reader::Incremental_input_entry_reader | |
1673 | Input_entry_reader; | |
1674 | ||
b961d0d7 | 1675 | virtual bool |
cdc29364 CC |
1676 | do_check_inputs(const Command_line& cmdline, |
1677 | Incremental_inputs* incremental_inputs); | |
b961d0d7 | 1678 | |
cdc29364 | 1679 | // Return TRUE if input file N has changed since the last incremental link. |
b961d0d7 | 1680 | virtual bool |
cdc29364 CC |
1681 | do_file_has_changed(unsigned int n) const; |
1682 | ||
1683 | // Initialize the layout of the output file based on the existing | |
1684 | // output file. | |
1685 | virtual void | |
1686 | do_init_layout(Layout* layout); | |
1687 | ||
1688 | // Mark regions of the input file that must be kept unchanged. | |
1689 | virtual void | |
1690 | do_reserve_layout(unsigned int input_file_index); | |
1691 | ||
4829d394 CC |
1692 | // Process the GOT and PLT entries from the existing output file. |
1693 | virtual void | |
1694 | do_process_got_plt(Symbol_table* symtab, Layout* layout); | |
1695 | ||
26d3c67d CC |
1696 | // Emit COPY relocations from the existing output file. |
1697 | virtual void | |
1698 | do_emit_copy_relocs(Symbol_table* symtab); | |
1699 | ||
94a3fc8b CC |
1700 | // Apply incremental relocations for symbols whose values have changed. |
1701 | virtual void | |
1702 | do_apply_incremental_relocs(const Symbol_table* symtab, Layout* layout, | |
1703 | Output_file* of); | |
1704 | ||
cdc29364 | 1705 | // Proxy class for a sized Incremental_input_entry_reader. |
b961d0d7 | 1706 | |
b961d0d7 CC |
1707 | class Sized_input_reader : public Input_reader |
1708 | { | |
1709 | public: | |
b961d0d7 CC |
1710 | Sized_input_reader(Input_entry_reader r) |
1711 | : Input_reader(), reader_(r) | |
1712 | { } | |
1713 | ||
a1893a82 CC |
1714 | Sized_input_reader(const Sized_input_reader& r) |
1715 | : Input_reader(), reader_(r.reader_) | |
1716 | { } | |
1717 | ||
b961d0d7 CC |
1718 | virtual |
1719 | ~Sized_input_reader() | |
1720 | { } | |
1721 | ||
1722 | private: | |
1723 | const char* | |
1724 | do_filename() const | |
1725 | { return this->reader_.filename(); } | |
1726 | ||
1727 | Timespec | |
1728 | do_get_mtime() const | |
1729 | { return this->reader_.get_mtime(); } | |
1730 | ||
1731 | Incremental_input_type | |
1732 | do_type() const | |
1733 | { return this->reader_.type(); } | |
1734 | ||
cdc29364 CC |
1735 | unsigned int |
1736 | do_arg_serial() const | |
1737 | { return this->reader_.arg_serial(); } | |
1738 | ||
1739 | unsigned int | |
1740 | do_get_unused_symbol_count() const | |
1741 | { return this->reader_.get_unused_symbol_count(); } | |
1742 | ||
1743 | const char* | |
1744 | do_get_unused_symbol(unsigned int n) const | |
1745 | { return this->reader_.get_unused_symbol(n); } | |
1746 | ||
b961d0d7 CC |
1747 | Input_entry_reader reader_; |
1748 | }; | |
1749 | ||
cdc29364 CC |
1750 | virtual unsigned int |
1751 | do_input_file_count() const | |
1752 | { return this->inputs_reader_.input_file_count(); } | |
1753 | ||
1754 | virtual const Input_reader* | |
1755 | do_get_input_reader(unsigned int n) const | |
1756 | { | |
1757 | gold_assert(n < this->input_entry_readers_.size()); | |
1758 | return &this->input_entry_readers_[n]; | |
1759 | } | |
b961d0d7 CC |
1760 | |
1761 | private: | |
26d3c67d CC |
1762 | // List of symbols that need COPY relocations. |
1763 | struct Copy_reloc | |
1764 | { | |
1765 | Copy_reloc(Symbol* sym, Output_section* os, off_t off) | |
1766 | : symbol(sym), output_section(os), offset(off) | |
1767 | { } | |
1768 | ||
1769 | // The global symbol to copy. | |
1770 | Symbol* symbol; | |
1771 | // The output section into which the symbol was copied. | |
1772 | Output_section* output_section; | |
1773 | // The offset within that output section. | |
1774 | off_t offset; | |
1775 | }; | |
1776 | typedef std::vector<Copy_reloc> Copy_relocs; | |
1777 | ||
b961d0d7 CC |
1778 | bool |
1779 | find_incremental_inputs_sections(unsigned int* p_inputs_shndx, | |
1780 | unsigned int* p_symtab_shndx, | |
1781 | unsigned int* p_relocs_shndx, | |
1782 | unsigned int* p_got_plt_shndx, | |
1783 | unsigned int* p_strtab_shndx); | |
1784 | ||
1785 | void | |
1786 | setup_readers(); | |
1787 | ||
1788 | // Output as an ELF file. | |
1789 | elfcpp::Elf_file<size, big_endian, Incremental_binary> elf_file_; | |
1790 | ||
6fa2a40b CC |
1791 | // Vector of pointers to the input objects for the unchanged files. |
1792 | // For replaced files, the corresponding pointer is NULL. | |
1793 | std::vector<Sized_relobj_incr<size, big_endian>*> input_objects_; | |
4829d394 | 1794 | |
cdc29364 CC |
1795 | // Map section index to an Output_section in the updated layout. |
1796 | std::vector<Output_section*> section_map_; | |
1797 | ||
94a3fc8b CC |
1798 | // Map global symbols from the input file to the symbol table. |
1799 | std::vector<Symbol*> symbol_map_; | |
1800 | ||
26d3c67d CC |
1801 | // List of symbols that need COPY relocations. |
1802 | Copy_relocs copy_relocs_; | |
1803 | ||
4829d394 CC |
1804 | // Locations of the main symbol table and symbol string table. |
1805 | Location main_symtab_loc_; | |
1806 | Location main_strtab_loc_; | |
1807 | ||
b961d0d7 CC |
1808 | // Readers for the incremental info sections. |
1809 | bool has_incremental_info_; | |
1810 | Incremental_inputs_reader<size, big_endian> inputs_reader_; | |
1811 | Incremental_symtab_reader<big_endian> symtab_reader_; | |
1812 | Incremental_relocs_reader<size, big_endian> relocs_reader_; | |
1813 | Incremental_got_plt_reader<big_endian> got_plt_reader_; | |
cdc29364 CC |
1814 | std::vector<Sized_input_reader> input_entry_readers_; |
1815 | }; | |
1816 | ||
1817 | // An incremental Relobj. This class represents a relocatable object | |
1818 | // that has not changed since the last incremental link, and whose contents | |
1819 | // can be used directly from the base file. | |
1820 | ||
1821 | template<int size, bool big_endian> | |
6fa2a40b | 1822 | class Sized_relobj_incr : public Sized_relobj<size, big_endian> |
cdc29364 CC |
1823 | { |
1824 | public: | |
1825 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
6fa2a40b | 1826 | typedef typename Sized_relobj<size, big_endian>::Symbols Symbols; |
cdc29364 | 1827 | |
6fa2a40b | 1828 | Sized_relobj_incr(const std::string& name, |
cdc29364 CC |
1829 | Sized_incremental_binary<size, big_endian>* ibase, |
1830 | unsigned int input_file_index); | |
1831 | ||
cdc29364 | 1832 | private: |
f0f9babf | 1833 | // For convenience. |
6fa2a40b | 1834 | typedef Sized_relobj_incr<size, big_endian> This; |
f0f9babf CC |
1835 | static const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
1836 | ||
6fa2a40b | 1837 | typedef typename Sized_relobj<size, big_endian>::Output_sections |
cdc29364 CC |
1838 | Output_sections; |
1839 | typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; | |
1840 | typedef typename Inputs_reader::Incremental_input_entry_reader | |
1841 | Input_entry_reader; | |
1842 | ||
f0f9babf CC |
1843 | // A local symbol. |
1844 | struct Local_symbol | |
1845 | { | |
1846 | Local_symbol(const char* name_, Address value_, unsigned int size_, | |
1847 | unsigned int shndx_, unsigned int type_, | |
1848 | bool needs_dynsym_entry_) | |
1849 | : st_value(value_), name(name_), st_size(size_), st_shndx(shndx_), | |
1850 | st_type(type_), output_dynsym_index(0), | |
1851 | needs_dynsym_entry(needs_dynsym_entry_) | |
1852 | { } | |
1853 | // The symbol value. | |
1854 | Address st_value; | |
1855 | // The symbol name. This points to the stringpool entry. | |
1856 | const char* name; | |
1857 | // The symbol size. | |
1858 | unsigned int st_size; | |
1859 | // The output section index. | |
1860 | unsigned int st_shndx : 28; | |
1861 | // The symbol type. | |
1862 | unsigned int st_type : 4; | |
1863 | // The index of the symbol in the output dynamic symbol table. | |
1864 | unsigned int output_dynsym_index : 31; | |
1865 | // TRUE if the symbol needs to appear in the dynamic symbol table. | |
1866 | unsigned int needs_dynsym_entry : 1; | |
1867 | }; | |
1868 | ||
cdc29364 CC |
1869 | // Return TRUE if this is an incremental (unchanged) input file. |
1870 | bool | |
1871 | do_is_incremental() const | |
1872 | { return true; } | |
1873 | ||
1874 | // Return the last modified time of the file. | |
1875 | Timespec | |
1876 | do_get_mtime() | |
1877 | { return this->input_reader_.get_mtime(); } | |
1878 | ||
1879 | // Read the symbols. | |
1880 | void | |
1881 | do_read_symbols(Read_symbols_data*); | |
1882 | ||
1883 | // Lay out the input sections. | |
1884 | void | |
1885 | do_layout(Symbol_table*, Layout*, Read_symbols_data*); | |
1886 | ||
1887 | // Layout sections whose layout was deferred while waiting for | |
1888 | // input files from a plugin. | |
1889 | void | |
1890 | do_layout_deferred_sections(Layout*); | |
1891 | ||
1892 | // Add the symbols to the symbol table. | |
1893 | void | |
1894 | do_add_symbols(Symbol_table*, Read_symbols_data*, Layout*); | |
1895 | ||
1896 | Archive::Should_include | |
1897 | do_should_include_member(Symbol_table* symtab, Layout*, Read_symbols_data*, | |
1898 | std::string* why); | |
1899 | ||
1900 | // Iterate over global symbols, calling a visitor class V for each. | |
1901 | void | |
1902 | do_for_all_global_symbols(Read_symbols_data* sd, | |
1903 | Library_base::Symbol_visitor_base* v); | |
1904 | ||
cdc29364 CC |
1905 | // Get the size of a section. |
1906 | uint64_t | |
1907 | do_section_size(unsigned int shndx); | |
1908 | ||
1909 | // Get the name of a section. | |
1910 | std::string | |
54674d38 | 1911 | do_section_name(unsigned int shndx) const; |
cdc29364 CC |
1912 | |
1913 | // Return a view of the contents of a section. | |
c1027032 CC |
1914 | const unsigned char* |
1915 | do_section_contents(unsigned int shndx, section_size_type* plen, | |
1916 | bool cache); | |
cdc29364 CC |
1917 | |
1918 | // Return section flags. | |
1919 | uint64_t | |
1920 | do_section_flags(unsigned int shndx); | |
1921 | ||
1922 | // Return section entsize. | |
1923 | uint64_t | |
1924 | do_section_entsize(unsigned int shndx); | |
1925 | ||
1926 | // Return section address. | |
1927 | uint64_t | |
1928 | do_section_address(unsigned int shndx); | |
1929 | ||
1930 | // Return section type. | |
1931 | unsigned int | |
1932 | do_section_type(unsigned int shndx); | |
1933 | ||
1934 | // Return the section link field. | |
1935 | unsigned int | |
1936 | do_section_link(unsigned int shndx); | |
1937 | ||
1938 | // Return the section link field. | |
1939 | unsigned int | |
1940 | do_section_info(unsigned int shndx); | |
b961d0d7 | 1941 | |
cdc29364 CC |
1942 | // Return the section alignment. |
1943 | uint64_t | |
1944 | do_section_addralign(unsigned int shndx); | |
1945 | ||
1946 | // Return the Xindex structure to use. | |
1947 | Xindex* | |
1948 | do_initialize_xindex(); | |
1949 | ||
1950 | // Get symbol counts. | |
1951 | void | |
1952 | do_get_global_symbol_counts(const Symbol_table*, size_t*, size_t*) const; | |
1953 | ||
1954 | // Get global symbols. | |
1955 | const Symbols* | |
1956 | do_get_global_symbols() const | |
1957 | { return &this->symbols_; } | |
1958 | ||
83896202 ILT |
1959 | // Return the value of a local symbol. |
1960 | uint64_t | |
1961 | do_local_symbol_value(unsigned int, uint64_t) const | |
1962 | { gold_unreachable(); } | |
1963 | ||
1964 | unsigned int | |
1965 | do_local_plt_offset(unsigned int) const | |
1966 | { gold_unreachable(); } | |
1967 | ||
d77a0555 ILT |
1968 | bool |
1969 | do_local_is_tls(unsigned int) const | |
1970 | { gold_unreachable(); } | |
1971 | ||
cdc29364 CC |
1972 | // Return the number of local symbols. |
1973 | unsigned int | |
1974 | do_local_symbol_count() const | |
f0f9babf CC |
1975 | { return this->local_symbol_count_; } |
1976 | ||
1977 | // Return the number of local symbols in the output symbol table. | |
1978 | unsigned int | |
1979 | do_output_local_symbol_count() const | |
1980 | { return this->local_symbol_count_; } | |
1981 | ||
1982 | // Return the file offset for local symbols in the output symbol table. | |
1983 | off_t | |
1984 | do_local_symbol_offset() const | |
1985 | { return this->local_symbol_offset_; } | |
cdc29364 CC |
1986 | |
1987 | // Read the relocs. | |
1988 | void | |
1989 | do_read_relocs(Read_relocs_data*); | |
1990 | ||
1991 | // Process the relocs to find list of referenced sections. Used only | |
1992 | // during garbage collection. | |
1993 | void | |
1994 | do_gc_process_relocs(Symbol_table*, Layout*, Read_relocs_data*); | |
1995 | ||
1996 | // Scan the relocs and adjust the symbol table. | |
1997 | void | |
1998 | do_scan_relocs(Symbol_table*, Layout*, Read_relocs_data*); | |
1999 | ||
2000 | // Count the local symbols. | |
2001 | void | |
2002 | do_count_local_symbols(Stringpool_template<char>*, | |
2003 | Stringpool_template<char>*); | |
2004 | ||
2005 | // Finalize the local symbols. | |
2006 | unsigned int | |
2007 | do_finalize_local_symbols(unsigned int, off_t, Symbol_table*); | |
2008 | ||
2009 | // Set the offset where local dynamic symbol information will be stored. | |
2010 | unsigned int | |
2011 | do_set_local_dynsym_indexes(unsigned int); | |
2012 | ||
2013 | // Set the offset where local dynamic symbol information will be stored. | |
2014 | unsigned int | |
2015 | do_set_local_dynsym_offset(off_t); | |
2016 | ||
2017 | // Relocate the input sections and write out the local symbols. | |
2018 | void | |
2019 | do_relocate(const Symbol_table* symtab, const Layout*, Output_file* of); | |
2020 | ||
2021 | // Set the offset of a section. | |
2022 | void | |
2023 | do_set_section_offset(unsigned int shndx, uint64_t off); | |
2024 | ||
2025 | // The Incremental_binary base file. | |
2026 | Sized_incremental_binary<size, big_endian>* ibase_; | |
2027 | // The index of the object in the input file list. | |
2028 | unsigned int input_file_index_; | |
2029 | // The reader for the input file. | |
2030 | Input_entry_reader input_reader_; | |
f0f9babf CC |
2031 | // The number of local symbols. |
2032 | unsigned int local_symbol_count_; | |
2033 | // The number of local symbols which go into the output file's dynamic | |
2034 | // symbol table. | |
2035 | unsigned int output_local_dynsym_count_; | |
2036 | // This starting symbol index in the output symbol table. | |
2037 | unsigned int local_symbol_index_; | |
2038 | // The file offset for local symbols in the output symbol table. | |
2039 | unsigned int local_symbol_offset_; | |
2040 | // The file offset for local symbols in the output symbol table. | |
2041 | unsigned int local_dynsym_offset_; | |
cdc29364 CC |
2042 | // The entries in the symbol table for the external symbols. |
2043 | Symbols symbols_; | |
53bbcc1b CC |
2044 | // Number of symbols defined in object file itself. |
2045 | size_t defined_count_; | |
cdc29364 CC |
2046 | // The offset of the first incremental relocation for this object. |
2047 | unsigned int incr_reloc_offset_; | |
2048 | // The number of incremental relocations for this object. | |
2049 | unsigned int incr_reloc_count_; | |
2050 | // The index of the first incremental relocation for this object in the | |
2051 | // updated output file. | |
2052 | unsigned int incr_reloc_output_index_; | |
2053 | // A copy of the incremental relocations from this object. | |
2054 | unsigned char* incr_relocs_; | |
f0f9babf CC |
2055 | // The local symbols. |
2056 | std::vector<Local_symbol> local_symbols_; | |
cdc29364 CC |
2057 | }; |
2058 | ||
2059 | // An incremental Dynobj. This class represents a shared object that has | |
2060 | // not changed since the last incremental link, and whose contents can be | |
2061 | // used directly from the base file. | |
2062 | ||
2063 | template<int size, bool big_endian> | |
2064 | class Sized_incr_dynobj : public Dynobj | |
2065 | { | |
2066 | public: | |
2067 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
2068 | ||
2069 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
2070 | ||
2071 | Sized_incr_dynobj(const std::string& name, | |
2072 | Sized_incremental_binary<size, big_endian>* ibase, | |
2073 | unsigned int input_file_index); | |
2074 | ||
2075 | private: | |
2076 | typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; | |
2077 | typedef typename Inputs_reader::Incremental_input_entry_reader | |
2078 | Input_entry_reader; | |
2079 | ||
2080 | // Return TRUE if this is an incremental (unchanged) input file. | |
2081 | bool | |
2082 | do_is_incremental() const | |
2083 | { return true; } | |
2084 | ||
2085 | // Return the last modified time of the file. | |
2086 | Timespec | |
2087 | do_get_mtime() | |
2088 | { return this->input_reader_.get_mtime(); } | |
2089 | ||
2090 | // Read the symbols. | |
2091 | void | |
2092 | do_read_symbols(Read_symbols_data*); | |
2093 | ||
2094 | // Lay out the input sections. | |
2095 | void | |
2096 | do_layout(Symbol_table*, Layout*, Read_symbols_data*); | |
2097 | ||
2098 | // Add the symbols to the symbol table. | |
2099 | void | |
2100 | do_add_symbols(Symbol_table*, Read_symbols_data*, Layout*); | |
2101 | ||
2102 | Archive::Should_include | |
2103 | do_should_include_member(Symbol_table* symtab, Layout*, Read_symbols_data*, | |
2104 | std::string* why); | |
2105 | ||
2106 | // Iterate over global symbols, calling a visitor class V for each. | |
2107 | void | |
2108 | do_for_all_global_symbols(Read_symbols_data* sd, | |
2109 | Library_base::Symbol_visitor_base* v); | |
2110 | ||
2111 | // Iterate over local symbols, calling a visitor class V for each GOT offset | |
2112 | // associated with a local symbol. | |
2113 | void | |
2114 | do_for_all_local_got_entries(Got_offset_list::Visitor* v) const; | |
2115 | ||
2116 | // Get the size of a section. | |
2117 | uint64_t | |
2118 | do_section_size(unsigned int shndx); | |
2119 | ||
2120 | // Get the name of a section. | |
2121 | std::string | |
54674d38 | 2122 | do_section_name(unsigned int shndx) const; |
cdc29364 CC |
2123 | |
2124 | // Return a view of the contents of a section. | |
c1027032 CC |
2125 | const unsigned char* |
2126 | do_section_contents(unsigned int shndx, section_size_type* plen, | |
2127 | bool cache); | |
cdc29364 CC |
2128 | |
2129 | // Return section flags. | |
2130 | uint64_t | |
2131 | do_section_flags(unsigned int shndx); | |
2132 | ||
2133 | // Return section entsize. | |
2134 | uint64_t | |
2135 | do_section_entsize(unsigned int shndx); | |
2136 | ||
2137 | // Return section address. | |
2138 | uint64_t | |
2139 | do_section_address(unsigned int shndx); | |
2140 | ||
2141 | // Return section type. | |
2142 | unsigned int | |
2143 | do_section_type(unsigned int shndx); | |
2144 | ||
2145 | // Return the section link field. | |
2146 | unsigned int | |
2147 | do_section_link(unsigned int shndx); | |
2148 | ||
2149 | // Return the section link field. | |
2150 | unsigned int | |
2151 | do_section_info(unsigned int shndx); | |
2152 | ||
2153 | // Return the section alignment. | |
2154 | uint64_t | |
2155 | do_section_addralign(unsigned int shndx); | |
2156 | ||
2157 | // Return the Xindex structure to use. | |
2158 | Xindex* | |
2159 | do_initialize_xindex(); | |
2160 | ||
2161 | // Get symbol counts. | |
2162 | void | |
2163 | do_get_global_symbol_counts(const Symbol_table*, size_t*, size_t*) const; | |
2164 | ||
2165 | // Get global symbols. | |
2166 | const Symbols* | |
2167 | do_get_global_symbols() const | |
2168 | { return &this->symbols_; } | |
2169 | ||
2170 | // The Incremental_binary base file. | |
2171 | Sized_incremental_binary<size, big_endian>* ibase_; | |
2172 | // The index of the object in the input file list. | |
2173 | unsigned int input_file_index_; | |
2174 | // The reader for the input file. | |
2175 | Input_entry_reader input_reader_; | |
2176 | // The entries in the symbol table for the external symbols. | |
2177 | Symbols symbols_; | |
53bbcc1b CC |
2178 | // Number of symbols defined in object file itself. |
2179 | size_t defined_count_; | |
cdc29364 CC |
2180 | }; |
2181 | ||
2182 | // Allocate an incremental object of the appropriate size and endianness. | |
2183 | extern Object* | |
2184 | make_sized_incremental_object( | |
2185 | Incremental_binary* base, | |
2186 | unsigned int input_file_index, | |
2187 | Incremental_input_type input_type, | |
2188 | const Incremental_binary::Input_reader* input_reader); | |
2189 | ||
2190 | // This class represents an Archive library (or --start-lib/--end-lib group) | |
2191 | // that has not changed since the last incremental link. Its contents come | |
2192 | // from the incremental inputs entry in the base file. | |
2193 | ||
2194 | class Incremental_library : public Library_base | |
2195 | { | |
2196 | public: | |
2197 | Incremental_library(const char* filename, unsigned int input_file_index, | |
2198 | const Incremental_binary::Input_reader* input_reader) | |
2199 | : Library_base(NULL), filename_(filename), | |
2200 | input_file_index_(input_file_index), input_reader_(input_reader), | |
2201 | unused_symbols_(), is_reported_(false) | |
2202 | { } | |
2203 | ||
2204 | // Return the input file index. | |
2205 | unsigned int | |
2206 | input_file_index() const | |
2207 | { return this->input_file_index_; } | |
2208 | ||
2209 | // Return the serial number of the input file. | |
2210 | unsigned int | |
2211 | arg_serial() const | |
2212 | { return this->input_reader_->arg_serial(); } | |
2213 | ||
2214 | // Copy the unused symbols from the incremental input info. | |
2215 | // We need to do this because we may be overwriting the incremental | |
2216 | // input info in the base file before we write the new incremental | |
2217 | // info. | |
2218 | void | |
2219 | copy_unused_symbols(); | |
2220 | ||
2221 | // Return FALSE on the first call to indicate that the library needs | |
2222 | // to be recorded; return TRUE subsequently. | |
2223 | bool | |
2224 | is_reported() | |
2225 | { | |
2226 | bool was_reported = this->is_reported_; | |
2227 | is_reported_ = true; | |
2228 | return was_reported; | |
2229 | } | |
2230 | ||
2231 | private: | |
2232 | typedef std::vector<std::string> Symbol_list; | |
2233 | ||
2234 | // The file name. | |
2235 | const std::string& | |
2236 | do_filename() const | |
2237 | { return this->filename_; } | |
2238 | ||
2239 | // Return the modification time of the archive file. | |
2240 | Timespec | |
2241 | do_get_mtime() | |
2242 | { return this->input_reader_->get_mtime(); } | |
2243 | ||
2244 | // Iterator for unused global symbols in the library. | |
2245 | void | |
2246 | do_for_all_unused_symbols(Symbol_visitor_base* v) const; | |
2247 | ||
2248 | // The name of the library. | |
2249 | std::string filename_; | |
2250 | // The input file index of this library. | |
2251 | unsigned int input_file_index_; | |
2252 | // A reader for the incremental input information. | |
2253 | const Incremental_binary::Input_reader* input_reader_; | |
2254 | // List of unused symbols defined in this library. | |
2255 | Symbol_list unused_symbols_; | |
2256 | // TRUE when this library has been reported to the new incremental info. | |
2257 | bool is_reported_; | |
b961d0d7 CC |
2258 | }; |
2259 | ||
3ce2c28e ILT |
2260 | } // End namespace gold. |
2261 | ||
2262 | #endif // !defined(GOLD_INCREMENTAL_H) |