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61ba1cf9 ILT |
1 | // reloc.cc -- relocate input files for gold. |
2 | ||
3 | #include "gold.h" | |
4 | ||
5 | #include "workqueue.h" | |
6 | #include "object.h" | |
5a6f7e2d | 7 | #include "symtab.h" |
61ba1cf9 ILT |
8 | #include "output.h" |
9 | #include "reloc.h" | |
10 | ||
11 | namespace gold | |
12 | { | |
13 | ||
92e059d8 ILT |
14 | // Read_relocs methods. |
15 | ||
16 | // These tasks just read the relocation information from the file. | |
17 | // After reading it, the start another task to process the | |
18 | // information. These tasks requires access to the file. | |
19 | ||
20 | Task::Is_runnable_type | |
21 | Read_relocs::is_runnable(Workqueue*) | |
22 | { | |
23 | return this->object_->is_locked() ? IS_LOCKED : IS_RUNNABLE; | |
24 | } | |
25 | ||
26 | // Lock the file. | |
27 | ||
28 | Task_locker* | |
29 | Read_relocs::locks(Workqueue*) | |
30 | { | |
31 | return new Task_locker_obj<Object>(*this->object_); | |
32 | } | |
33 | ||
34 | // Read the relocations and then start a Scan_relocs_task. | |
35 | ||
36 | void | |
37 | Read_relocs::run(Workqueue* workqueue) | |
38 | { | |
39 | Read_relocs_data *rd = new Read_relocs_data; | |
40 | this->object_->read_relocs(rd); | |
41 | workqueue->queue_front(new Scan_relocs(this->options_, this->symtab_, | |
ead1e424 ILT |
42 | this->layout_, this->object_, rd, |
43 | this->symtab_lock_, this->blocker_)); | |
92e059d8 ILT |
44 | } |
45 | ||
46 | // Scan_relocs methods. | |
47 | ||
48 | // These tasks scan the relocations read by Read_relocs and mark up | |
49 | // the symbol table to indicate which relocations are required. We | |
50 | // use a lock on the symbol table to keep them from interfering with | |
51 | // each other. | |
52 | ||
53 | Task::Is_runnable_type | |
54 | Scan_relocs::is_runnable(Workqueue*) | |
55 | { | |
ead1e424 ILT |
56 | if (!this->symtab_lock_->is_writable() || this->object_->is_locked()) |
57 | return IS_LOCKED; | |
58 | return IS_RUNNABLE; | |
92e059d8 ILT |
59 | } |
60 | ||
61 | // Return the locks we hold: one on the file, one on the symbol table | |
62 | // and one blocker. | |
63 | ||
64 | class Scan_relocs::Scan_relocs_locker : public Task_locker | |
65 | { | |
66 | public: | |
67 | Scan_relocs_locker(Object* object, Task_token& symtab_lock, Task* task, | |
68 | Task_token& blocker, Workqueue* workqueue) | |
69 | : objlock_(*object), symtab_locker_(symtab_lock, task), | |
70 | blocker_(blocker, workqueue) | |
71 | { } | |
72 | ||
73 | private: | |
74 | Task_locker_obj<Object> objlock_; | |
75 | Task_locker_write symtab_locker_; | |
76 | Task_locker_block blocker_; | |
77 | }; | |
78 | ||
79 | Task_locker* | |
80 | Scan_relocs::locks(Workqueue* workqueue) | |
81 | { | |
82 | return new Scan_relocs_locker(this->object_, *this->symtab_lock_, this, | |
83 | *this->blocker_, workqueue); | |
84 | } | |
85 | ||
86 | // Scan the relocs. | |
87 | ||
88 | void | |
89 | Scan_relocs::run(Workqueue*) | |
90 | { | |
ead1e424 ILT |
91 | this->object_->scan_relocs(this->options_, this->symtab_, this->layout_, |
92 | this->rd_); | |
92e059d8 ILT |
93 | delete this->rd_; |
94 | this->rd_ = NULL; | |
95 | } | |
96 | ||
61ba1cf9 ILT |
97 | // Relocate_task methods. |
98 | ||
99 | // These tasks are always runnable. | |
100 | ||
101 | Task::Is_runnable_type | |
102 | Relocate_task::is_runnable(Workqueue*) | |
103 | { | |
104 | return IS_RUNNABLE; | |
105 | } | |
106 | ||
107 | // We want to lock the file while we run. We want to unblock | |
108 | // FINAL_BLOCKER when we are done. | |
109 | ||
110 | class Relocate_task::Relocate_locker : public Task_locker | |
111 | { | |
112 | public: | |
113 | Relocate_locker(Task_token& token, Workqueue* workqueue, | |
114 | Object* object) | |
115 | : blocker_(token, workqueue), objlock_(*object) | |
116 | { } | |
117 | ||
118 | private: | |
119 | Task_locker_block blocker_; | |
120 | Task_locker_obj<Object> objlock_; | |
121 | }; | |
122 | ||
123 | Task_locker* | |
124 | Relocate_task::locks(Workqueue* workqueue) | |
125 | { | |
126 | return new Relocate_locker(*this->final_blocker_, workqueue, | |
127 | this->object_); | |
128 | } | |
129 | ||
130 | // Run the task. | |
131 | ||
132 | void | |
133 | Relocate_task::run(Workqueue*) | |
134 | { | |
92e059d8 | 135 | this->object_->relocate(this->options_, this->symtab_, this->layout_, |
61ba1cf9 ILT |
136 | this->of_); |
137 | } | |
138 | ||
92e059d8 ILT |
139 | // Read the relocs and local symbols from the object file and store |
140 | // the information in RD. | |
141 | ||
142 | template<int size, bool big_endian> | |
143 | void | |
f6ce93d6 | 144 | Sized_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) |
92e059d8 ILT |
145 | { |
146 | rd->relocs.clear(); | |
147 | ||
148 | unsigned int shnum = this->shnum(); | |
149 | if (shnum == 0) | |
150 | return; | |
151 | ||
152 | rd->relocs.reserve(shnum / 2); | |
153 | ||
645f8123 | 154 | const unsigned char *pshdrs = this->get_view(this->elf_file_.shoff(), |
92e059d8 ILT |
155 | shnum * This::shdr_size); |
156 | // Skip the first, dummy, section. | |
157 | const unsigned char *ps = pshdrs + This::shdr_size; | |
158 | for (unsigned int i = 1; i < shnum; ++i, ps += This::shdr_size) | |
159 | { | |
160 | typename This::Shdr shdr(ps); | |
161 | ||
162 | unsigned int sh_type = shdr.get_sh_type(); | |
163 | if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) | |
164 | continue; | |
165 | ||
166 | unsigned int shndx = shdr.get_sh_info(); | |
167 | if (shndx >= shnum) | |
168 | { | |
169 | fprintf(stderr, _("%s: %s: relocation section %u has bad info %u\n"), | |
170 | program_name, this->name().c_str(), i, shndx); | |
171 | gold_exit(false); | |
172 | } | |
173 | ||
174 | if (!this->is_section_included(shndx)) | |
175 | continue; | |
176 | ||
ead1e424 ILT |
177 | // We are scanning relocations in order to fill out the GOT and |
178 | // PLT sections. Relocations for sections which are not | |
179 | // allocated (typically debugging sections) should not add new | |
180 | // GOT and PLT entries. So we skip them. | |
181 | typename This::Shdr secshdr(pshdrs + shndx * This::shdr_size); | |
182 | if ((secshdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0) | |
183 | continue; | |
184 | ||
645f8123 | 185 | if (shdr.get_sh_link() != this->symtab_shndx_) |
92e059d8 ILT |
186 | { |
187 | fprintf(stderr, | |
188 | _("%s: %s: relocation section %u uses unexpected " | |
189 | "symbol table %u\n"), | |
190 | program_name, this->name().c_str(), i, shdr.get_sh_link()); | |
191 | gold_exit(false); | |
192 | } | |
193 | ||
194 | off_t sh_size = shdr.get_sh_size(); | |
195 | ||
196 | unsigned int reloc_size; | |
197 | if (sh_type == elfcpp::SHT_REL) | |
198 | reloc_size = elfcpp::Elf_sizes<size>::rel_size; | |
199 | else | |
200 | reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
201 | if (reloc_size != shdr.get_sh_entsize()) | |
202 | { | |
203 | fprintf(stderr, | |
204 | _("%s: %s: unexpected entsize for reloc section %u: " | |
205 | "%lu != %u"), | |
206 | program_name, this->name().c_str(), i, | |
207 | static_cast<unsigned long>(shdr.get_sh_entsize()), | |
208 | reloc_size); | |
209 | gold_exit(false); | |
210 | } | |
211 | ||
212 | size_t reloc_count = sh_size / reloc_size; | |
213 | if (reloc_count * reloc_size != sh_size) | |
214 | { | |
215 | fprintf(stderr, _("%s: %s: reloc section %u size %lu uneven"), | |
216 | program_name, this->name().c_str(), i, | |
217 | static_cast<unsigned long>(sh_size)); | |
218 | gold_exit(false); | |
219 | } | |
220 | ||
221 | rd->relocs.push_back(Section_relocs()); | |
222 | Section_relocs& sr(rd->relocs.back()); | |
223 | sr.reloc_shndx = i; | |
224 | sr.data_shndx = shndx; | |
225 | sr.contents = this->get_lasting_view(shdr.get_sh_offset(), sh_size); | |
226 | sr.sh_type = sh_type; | |
227 | sr.reloc_count = reloc_count; | |
228 | } | |
229 | ||
230 | // Read the local symbols. | |
a3ad94ed | 231 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 232 | if (this->symtab_shndx_ == 0 || this->local_symbol_count_ == 0) |
92e059d8 ILT |
233 | rd->local_symbols = NULL; |
234 | else | |
235 | { | |
236 | typename This::Shdr symtabshdr(pshdrs | |
645f8123 | 237 | + this->symtab_shndx_ * This::shdr_size); |
a3ad94ed | 238 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
92e059d8 ILT |
239 | const int sym_size = This::sym_size; |
240 | const unsigned int loccount = this->local_symbol_count_; | |
a3ad94ed | 241 | gold_assert(loccount == symtabshdr.get_sh_info()); |
92e059d8 ILT |
242 | off_t locsize = loccount * sym_size; |
243 | rd->local_symbols = this->get_lasting_view(symtabshdr.get_sh_offset(), | |
244 | locsize); | |
245 | } | |
246 | } | |
247 | ||
248 | // Scan the relocs and adjust the symbol table. This looks for | |
249 | // relocations which require GOT/PLT/COPY relocations. | |
250 | ||
251 | template<int size, bool big_endian> | |
252 | void | |
f6ce93d6 | 253 | Sized_relobj<size, big_endian>::do_scan_relocs(const General_options& options, |
92e059d8 | 254 | Symbol_table* symtab, |
ead1e424 | 255 | Layout* layout, |
92e059d8 ILT |
256 | Read_relocs_data* rd) |
257 | { | |
258 | Sized_target<size, big_endian>* target = this->sized_target(); | |
259 | ||
260 | const unsigned char* local_symbols; | |
261 | if (rd->local_symbols == NULL) | |
262 | local_symbols = NULL; | |
263 | else | |
264 | local_symbols = rd->local_symbols->data(); | |
265 | ||
266 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
267 | p != rd->relocs.end(); | |
268 | ++p) | |
269 | { | |
a3ad94ed ILT |
270 | target->scan_relocs(options, symtab, layout, this, p->data_shndx, |
271 | p->sh_type, p->contents->data(), p->reloc_count, | |
92e059d8 ILT |
272 | this->local_symbol_count_, |
273 | local_symbols, | |
274 | this->symbols_); | |
275 | delete p->contents; | |
276 | p->contents = NULL; | |
277 | } | |
278 | ||
279 | if (rd->local_symbols != NULL) | |
280 | { | |
281 | delete rd->local_symbols; | |
282 | rd->local_symbols = NULL; | |
283 | } | |
284 | } | |
285 | ||
61ba1cf9 ILT |
286 | // Relocate the input sections and write out the local symbols. |
287 | ||
288 | template<int size, bool big_endian> | |
289 | void | |
f6ce93d6 | 290 | Sized_relobj<size, big_endian>::do_relocate(const General_options& options, |
61ba1cf9 | 291 | const Symbol_table* symtab, |
92e059d8 | 292 | const Layout* layout, |
61ba1cf9 ILT |
293 | Output_file* of) |
294 | { | |
295 | unsigned int shnum = this->shnum(); | |
296 | ||
297 | // Read the section headers. | |
645f8123 | 298 | const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(), |
61ba1cf9 ILT |
299 | shnum * This::shdr_size); |
300 | ||
301 | Views views; | |
302 | views.resize(shnum); | |
303 | ||
304 | // Make two passes over the sections. The first one copies the | |
305 | // section data to the output file. The second one applies | |
306 | // relocations. | |
307 | ||
308 | this->write_sections(pshdrs, of, &views); | |
309 | ||
310 | // Apply relocations. | |
311 | ||
92e059d8 | 312 | this->relocate_sections(options, symtab, layout, pshdrs, &views); |
61ba1cf9 ILT |
313 | |
314 | // Write out the accumulated views. | |
315 | for (unsigned int i = 1; i < shnum; ++i) | |
316 | { | |
317 | if (views[i].view != NULL) | |
318 | of->write_output_view(views[i].offset, views[i].view_size, | |
319 | views[i].view); | |
320 | } | |
321 | ||
322 | // Write out the local symbols. | |
92e059d8 | 323 | this->write_local_symbols(of, layout->sympool()); |
61ba1cf9 ILT |
324 | } |
325 | ||
326 | // Write section data to the output file. PSHDRS points to the | |
327 | // section headers. Record the views in *PVIEWS for use when | |
328 | // relocating. | |
329 | ||
330 | template<int size, bool big_endian> | |
331 | void | |
f6ce93d6 | 332 | Sized_relobj<size, big_endian>::write_sections(const unsigned char* pshdrs, |
61ba1cf9 ILT |
333 | Output_file* of, |
334 | Views* pviews) | |
335 | { | |
336 | unsigned int shnum = this->shnum(); | |
337 | std::vector<Map_to_output>& map_sections(this->map_to_output()); | |
338 | ||
339 | const unsigned char* p = pshdrs + This::shdr_size; | |
340 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
341 | { | |
342 | View_size* pvs = &(*pviews)[i]; | |
343 | ||
344 | pvs->view = NULL; | |
345 | ||
b8e6aad9 ILT |
346 | if (map_sections[i].offset == -1) |
347 | continue; | |
348 | ||
61ba1cf9 ILT |
349 | const Output_section* os = map_sections[i].output_section; |
350 | if (os == NULL) | |
351 | continue; | |
352 | ||
353 | typename This::Shdr shdr(p); | |
354 | ||
355 | if (shdr.get_sh_type() == elfcpp::SHT_NOBITS) | |
356 | continue; | |
357 | ||
61ba1cf9 ILT |
358 | off_t start = os->offset() + map_sections[i].offset; |
359 | off_t sh_size = shdr.get_sh_size(); | |
360 | ||
ead1e424 ILT |
361 | if (sh_size == 0) |
362 | continue; | |
363 | ||
a3ad94ed ILT |
364 | gold_assert(map_sections[i].offset >= 0 |
365 | && map_sections[i].offset + sh_size <= os->data_size()); | |
ead1e424 | 366 | |
61ba1cf9 | 367 | unsigned char* view = of->get_output_view(start, sh_size); |
92e059d8 ILT |
368 | this->read(shdr.get_sh_offset(), sh_size, view); |
369 | ||
61ba1cf9 ILT |
370 | pvs->view = view; |
371 | pvs->address = os->address() + map_sections[i].offset; | |
372 | pvs->offset = start; | |
373 | pvs->view_size = sh_size; | |
374 | } | |
375 | } | |
376 | ||
377 | // Relocate section data. VIEWS points to the section data as views | |
378 | // in the output file. | |
379 | ||
380 | template<int size, bool big_endian> | |
381 | void | |
f6ce93d6 | 382 | Sized_relobj<size, big_endian>::relocate_sections( |
92e059d8 ILT |
383 | const General_options& options, |
384 | const Symbol_table* symtab, | |
385 | const Layout* layout, | |
386 | const unsigned char* pshdrs, | |
387 | Views* pviews) | |
61ba1cf9 ILT |
388 | { |
389 | unsigned int shnum = this->shnum(); | |
61ba1cf9 ILT |
390 | Sized_target<size, big_endian>* target = this->sized_target(); |
391 | ||
92e059d8 ILT |
392 | Relocate_info<size, big_endian> relinfo; |
393 | relinfo.options = &options; | |
394 | relinfo.symtab = symtab; | |
395 | relinfo.layout = layout; | |
396 | relinfo.object = this; | |
397 | relinfo.local_symbol_count = this->local_symbol_count_; | |
c06b7b0b | 398 | relinfo.local_values = &this->local_values_; |
92e059d8 ILT |
399 | relinfo.symbols = this->symbols_; |
400 | ||
61ba1cf9 ILT |
401 | const unsigned char* p = pshdrs + This::shdr_size; |
402 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
403 | { | |
404 | typename This::Shdr shdr(p); | |
405 | ||
406 | unsigned int sh_type = shdr.get_sh_type(); | |
407 | if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) | |
408 | continue; | |
409 | ||
410 | unsigned int index = shdr.get_sh_info(); | |
411 | if (index >= this->shnum()) | |
412 | { | |
413 | fprintf(stderr, _("%s: %s: relocation section %u has bad info %u\n"), | |
414 | program_name, this->name().c_str(), i, index); | |
415 | gold_exit(false); | |
416 | } | |
417 | ||
92e059d8 | 418 | if (!this->is_section_included(index)) |
61ba1cf9 ILT |
419 | { |
420 | // This relocation section is against a section which we | |
421 | // discarded. | |
422 | continue; | |
423 | } | |
424 | ||
a3ad94ed | 425 | gold_assert((*pviews)[index].view != NULL); |
61ba1cf9 | 426 | |
645f8123 | 427 | if (shdr.get_sh_link() != this->symtab_shndx_) |
61ba1cf9 ILT |
428 | { |
429 | fprintf(stderr, | |
430 | _("%s: %s: relocation section %u uses unexpected " | |
431 | "symbol table %u\n"), | |
432 | program_name, this->name().c_str(), i, shdr.get_sh_link()); | |
433 | gold_exit(false); | |
434 | } | |
435 | ||
436 | off_t sh_size = shdr.get_sh_size(); | |
437 | const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(), | |
438 | sh_size); | |
439 | ||
440 | unsigned int reloc_size; | |
441 | if (sh_type == elfcpp::SHT_REL) | |
442 | reloc_size = elfcpp::Elf_sizes<size>::rel_size; | |
443 | else | |
444 | reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
445 | ||
446 | if (reloc_size != shdr.get_sh_entsize()) | |
447 | { | |
448 | fprintf(stderr, | |
449 | _("%s: %s: unexpected entsize for reloc section %u: " | |
450 | "%lu != %u"), | |
451 | program_name, this->name().c_str(), i, | |
452 | static_cast<unsigned long>(shdr.get_sh_entsize()), | |
453 | reloc_size); | |
454 | gold_exit(false); | |
455 | } | |
456 | ||
457 | size_t reloc_count = sh_size / reloc_size; | |
458 | if (reloc_count * reloc_size != sh_size) | |
459 | { | |
460 | fprintf(stderr, _("%s: %s: reloc section %u size %lu uneven"), | |
461 | program_name, this->name().c_str(), i, | |
462 | static_cast<unsigned long>(sh_size)); | |
463 | gold_exit(false); | |
464 | } | |
465 | ||
92e059d8 ILT |
466 | relinfo.reloc_shndx = i; |
467 | relinfo.data_shndx = index; | |
468 | target->relocate_section(&relinfo, | |
469 | sh_type, | |
470 | prelocs, | |
471 | reloc_count, | |
61ba1cf9 ILT |
472 | (*pviews)[index].view, |
473 | (*pviews)[index].address, | |
474 | (*pviews)[index].view_size); | |
475 | } | |
476 | } | |
477 | ||
5a6f7e2d ILT |
478 | // Copy_relocs::Copy_reloc_entry methods. |
479 | ||
480 | // Return whether we should emit this reloc. We should emit it if the | |
481 | // symbol is still defined in a dynamic object. If we should not emit | |
482 | // it, we clear it, to save ourselves the test next time. | |
483 | ||
484 | template<int size, bool big_endian> | |
485 | bool | |
486 | Copy_relocs<size, big_endian>::Copy_reloc_entry::should_emit() | |
487 | { | |
488 | if (this->sym_ == NULL) | |
489 | return false; | |
14b31740 | 490 | if (this->sym_->is_from_dynobj()) |
5a6f7e2d ILT |
491 | return true; |
492 | this->sym_ = NULL; | |
493 | return false; | |
494 | } | |
495 | ||
496 | // Emit a reloc into a SHT_REL section. | |
497 | ||
498 | template<int size, bool big_endian> | |
499 | void | |
500 | Copy_relocs<size, big_endian>::Copy_reloc_entry::emit( | |
501 | Output_data_reloc<elfcpp::SHT_REL, true, size, big_endian>* reloc_data) | |
502 | { | |
16649710 | 503 | this->sym_->set_needs_dynsym_entry(); |
5a6f7e2d ILT |
504 | reloc_data->add_global(this->sym_, this->reloc_type_, this->relobj_, |
505 | this->shndx_, this->address_); | |
506 | } | |
507 | ||
508 | // Emit a reloc into a SHT_RELA section. | |
509 | ||
510 | template<int size, bool big_endian> | |
511 | void | |
512 | Copy_relocs<size, big_endian>::Copy_reloc_entry::emit( | |
513 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian>* reloc_data) | |
514 | { | |
16649710 | 515 | this->sym_->set_needs_dynsym_entry(); |
5a6f7e2d ILT |
516 | reloc_data->add_global(this->sym_, this->reloc_type_, this->relobj_, |
517 | this->shndx_, this->address_, this->addend_); | |
518 | } | |
519 | ||
520 | // Copy_relocs methods. | |
a3ad94ed ILT |
521 | |
522 | // Return whether we need a COPY reloc for a relocation against GSYM. | |
523 | // The relocation is being applied to section SHNDX in OBJECT. | |
524 | ||
525 | template<int size, bool big_endian> | |
526 | bool | |
5a6f7e2d | 527 | Copy_relocs<size, big_endian>::need_copy_reloc( |
a3ad94ed ILT |
528 | const General_options*, |
529 | Relobj* object, | |
530 | unsigned int shndx, | |
5a6f7e2d | 531 | Sized_symbol<size>* sym) |
a3ad94ed ILT |
532 | { |
533 | // FIXME: Handle -z nocopyrelocs. | |
534 | ||
5a6f7e2d ILT |
535 | if (sym->symsize() == 0) |
536 | return false; | |
537 | ||
a3ad94ed ILT |
538 | // If this is a readonly section, then we need a COPY reloc. |
539 | // Otherwise we can use a dynamic reloc. | |
540 | if ((object->section_flags(shndx) & elfcpp::SHF_WRITE) == 0) | |
541 | return true; | |
542 | ||
543 | return false; | |
544 | } | |
545 | ||
5a6f7e2d ILT |
546 | // Save a Rel reloc. |
547 | ||
548 | template<int size, bool big_endian> | |
549 | void | |
550 | Copy_relocs<size, big_endian>::save( | |
551 | Symbol* sym, | |
552 | Relobj* relobj, | |
553 | unsigned int shndx, | |
554 | const elfcpp::Rel<size, big_endian>& rel) | |
555 | { | |
556 | unsigned int reloc_type = elfcpp::elf_r_type<size>(rel.get_r_info()); | |
557 | this->entries_.push_back(Copy_reloc_entry(sym, reloc_type, relobj, shndx, | |
558 | rel.get_r_offset(), 0)); | |
559 | } | |
560 | ||
561 | // Save a Rela reloc. | |
562 | ||
563 | template<int size, bool big_endian> | |
564 | void | |
565 | Copy_relocs<size, big_endian>::save( | |
566 | Symbol* sym, | |
567 | Relobj* relobj, | |
568 | unsigned int shndx, | |
569 | const elfcpp::Rela<size, big_endian>& rela) | |
570 | { | |
571 | unsigned int reloc_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
572 | this->entries_.push_back(Copy_reloc_entry(sym, reloc_type, relobj, shndx, | |
573 | rela.get_r_offset(), | |
574 | rela.get_r_addend())); | |
575 | } | |
576 | ||
577 | // Return whether there are any relocs to emit. We don't want to emit | |
578 | // a reloc if the symbol is no longer defined in a dynamic object. | |
579 | ||
580 | template<int size, bool big_endian> | |
581 | bool | |
582 | Copy_relocs<size, big_endian>::any_to_emit() | |
583 | { | |
584 | for (typename Copy_reloc_entries::iterator p = this->entries_.begin(); | |
585 | p != this->entries_.end(); | |
586 | ++p) | |
587 | { | |
588 | if (p->should_emit()) | |
589 | return true; | |
590 | } | |
591 | return false; | |
592 | } | |
593 | ||
594 | // Emit relocs. | |
595 | ||
596 | template<int size, bool big_endian> | |
597 | template<int sh_type> | |
598 | void | |
599 | Copy_relocs<size, big_endian>::emit( | |
600 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_data) | |
601 | { | |
602 | for (typename Copy_reloc_entries::iterator p = this->entries_.begin(); | |
603 | p != this->entries_.end(); | |
604 | ++p) | |
605 | { | |
606 | if (p->should_emit()) | |
607 | p->emit(reloc_data); | |
608 | } | |
609 | } | |
610 | ||
61ba1cf9 ILT |
611 | // Instantiate the templates we need. We could use the configure |
612 | // script to restrict this to only the ones for implemented targets. | |
613 | ||
92e059d8 ILT |
614 | template |
615 | void | |
f6ce93d6 | 616 | Sized_relobj<32, false>::do_read_relocs(Read_relocs_data* rd); |
92e059d8 ILT |
617 | |
618 | template | |
619 | void | |
f6ce93d6 | 620 | Sized_relobj<32, true>::do_read_relocs(Read_relocs_data* rd); |
92e059d8 ILT |
621 | |
622 | template | |
623 | void | |
f6ce93d6 | 624 | Sized_relobj<64, false>::do_read_relocs(Read_relocs_data* rd); |
92e059d8 ILT |
625 | |
626 | template | |
627 | void | |
f6ce93d6 | 628 | Sized_relobj<64, true>::do_read_relocs(Read_relocs_data* rd); |
92e059d8 ILT |
629 | |
630 | template | |
631 | void | |
f6ce93d6 | 632 | Sized_relobj<32, false>::do_scan_relocs(const General_options& options, |
92e059d8 | 633 | Symbol_table* symtab, |
ead1e424 | 634 | Layout* layout, |
92e059d8 ILT |
635 | Read_relocs_data* rd); |
636 | ||
637 | template | |
638 | void | |
f6ce93d6 | 639 | Sized_relobj<32, true>::do_scan_relocs(const General_options& options, |
92e059d8 | 640 | Symbol_table* symtab, |
ead1e424 | 641 | Layout* layout, |
92e059d8 ILT |
642 | Read_relocs_data* rd); |
643 | ||
644 | template | |
645 | void | |
f6ce93d6 | 646 | Sized_relobj<64, false>::do_scan_relocs(const General_options& options, |
92e059d8 | 647 | Symbol_table* symtab, |
ead1e424 | 648 | Layout* layout, |
92e059d8 ILT |
649 | Read_relocs_data* rd); |
650 | ||
651 | template | |
652 | void | |
f6ce93d6 | 653 | Sized_relobj<64, true>::do_scan_relocs(const General_options& options, |
92e059d8 | 654 | Symbol_table* symtab, |
ead1e424 | 655 | Layout* layout, |
92e059d8 ILT |
656 | Read_relocs_data* rd); |
657 | ||
61ba1cf9 ILT |
658 | template |
659 | void | |
f6ce93d6 | 660 | Sized_relobj<32, false>::do_relocate(const General_options& options, |
61ba1cf9 | 661 | const Symbol_table* symtab, |
92e059d8 | 662 | const Layout* layout, |
61ba1cf9 ILT |
663 | Output_file* of); |
664 | ||
665 | template | |
666 | void | |
f6ce93d6 | 667 | Sized_relobj<32, true>::do_relocate(const General_options& options, |
61ba1cf9 | 668 | const Symbol_table* symtab, |
92e059d8 | 669 | const Layout* layout, |
61ba1cf9 ILT |
670 | Output_file* of); |
671 | ||
672 | template | |
673 | void | |
f6ce93d6 | 674 | Sized_relobj<64, false>::do_relocate(const General_options& options, |
61ba1cf9 | 675 | const Symbol_table* symtab, |
92e059d8 | 676 | const Layout* layout, |
61ba1cf9 ILT |
677 | Output_file* of); |
678 | ||
679 | template | |
680 | void | |
f6ce93d6 | 681 | Sized_relobj<64, true>::do_relocate(const General_options& options, |
61ba1cf9 | 682 | const Symbol_table* symtab, |
92e059d8 | 683 | const Layout* layout, |
61ba1cf9 ILT |
684 | Output_file* of); |
685 | ||
a3ad94ed | 686 | template |
5a6f7e2d | 687 | class Copy_relocs<32, false>; |
a3ad94ed ILT |
688 | |
689 | template | |
5a6f7e2d | 690 | class Copy_relocs<32, true>; |
a3ad94ed ILT |
691 | |
692 | template | |
5a6f7e2d | 693 | class Copy_relocs<64, false>; |
a3ad94ed ILT |
694 | |
695 | template | |
5a6f7e2d ILT |
696 | class Copy_relocs<64, true>; |
697 | ||
698 | template | |
699 | void | |
700 | Copy_relocs<32, false>::emit<elfcpp::SHT_REL>( | |
701 | Output_data_reloc<elfcpp::SHT_REL, true, 32, false>*); | |
702 | ||
703 | template | |
704 | void | |
705 | Copy_relocs<32, true>::emit<elfcpp::SHT_REL>( | |
706 | Output_data_reloc<elfcpp::SHT_REL, true, 32, true>*); | |
707 | ||
708 | template | |
709 | void | |
710 | Copy_relocs<64, false>::emit<elfcpp::SHT_REL>( | |
711 | Output_data_reloc<elfcpp::SHT_REL, true, 64, false>*); | |
712 | ||
713 | template | |
714 | void | |
715 | Copy_relocs<64, true>::emit<elfcpp::SHT_REL>( | |
716 | Output_data_reloc<elfcpp::SHT_REL, true, 64, true>*); | |
717 | ||
718 | template | |
719 | void | |
720 | Copy_relocs<32, false>::emit<elfcpp::SHT_RELA>( | |
721 | Output_data_reloc<elfcpp::SHT_RELA , true, 32, false>*); | |
722 | ||
723 | template | |
724 | void | |
725 | Copy_relocs<32, true>::emit<elfcpp::SHT_RELA>( | |
726 | Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>*); | |
727 | ||
728 | template | |
729 | void | |
730 | Copy_relocs<64, false>::emit<elfcpp::SHT_RELA>( | |
731 | Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>*); | |
732 | ||
733 | template | |
734 | void | |
735 | Copy_relocs<64, true>::emit<elfcpp::SHT_RELA>( | |
736 | Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>*); | |
61ba1cf9 ILT |
737 | |
738 | } // End namespace gold. |