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61ba1cf9 ILT |
1 | // reloc.cc -- relocate input files for gold. |
2 | ||
6d03d481 | 3 | // Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
61ba1cf9 ILT |
23 | #include "gold.h" |
24 | ||
cb295612 ILT |
25 | #include <algorithm> |
26 | ||
61ba1cf9 | 27 | #include "workqueue.h" |
5a6f7e2d | 28 | #include "symtab.h" |
61ba1cf9 | 29 | #include "output.h" |
a9a60db6 ILT |
30 | #include "merge.h" |
31 | #include "object.h" | |
7019cd25 | 32 | #include "target-reloc.h" |
61ba1cf9 | 33 | #include "reloc.h" |
032ce4e9 | 34 | #include "icf.h" |
61ba1cf9 ILT |
35 | |
36 | namespace gold | |
37 | { | |
38 | ||
92e059d8 ILT |
39 | // Read_relocs methods. |
40 | ||
41 | // These tasks just read the relocation information from the file. | |
42 | // After reading it, the start another task to process the | |
43 | // information. These tasks requires access to the file. | |
44 | ||
17a1d0a9 ILT |
45 | Task_token* |
46 | Read_relocs::is_runnable() | |
92e059d8 | 47 | { |
17a1d0a9 | 48 | return this->object_->is_locked() ? this->object_->token() : NULL; |
92e059d8 ILT |
49 | } |
50 | ||
51 | // Lock the file. | |
52 | ||
17a1d0a9 ILT |
53 | void |
54 | Read_relocs::locks(Task_locker* tl) | |
92e059d8 | 55 | { |
17a1d0a9 | 56 | tl->add(this, this->object_->token()); |
92e059d8 ILT |
57 | } |
58 | ||
59 | // Read the relocations and then start a Scan_relocs_task. | |
60 | ||
61 | void | |
62 | Read_relocs::run(Workqueue* workqueue) | |
63 | { | |
64 | Read_relocs_data *rd = new Read_relocs_data; | |
65 | this->object_->read_relocs(rd); | |
6d03d481 | 66 | this->object_->set_relocs_data(rd); |
17a1d0a9 ILT |
67 | this->object_->release(); |
68 | ||
ef15dade ST |
69 | // If garbage collection or identical comdat folding is desired, we |
70 | // process the relocs first before scanning them. Scanning of relocs is | |
71 | // done only after garbage or identical sections is identified. | |
032ce4e9 ST |
72 | if (parameters->options().gc_sections() |
73 | || parameters->options().icf_enabled()) | |
ef15dade | 74 | { |
ad0f2072 | 75 | workqueue->queue_next(new Gc_process_relocs(this->symtab_, |
6d03d481 ST |
76 | this->layout_, |
77 | this->object_, rd, | |
78 | this->symtab_lock_, | |
79 | this->blocker_)); | |
80 | } | |
81 | else | |
82 | { | |
ad0f2072 ILT |
83 | workqueue->queue_next(new Scan_relocs(this->symtab_, this->layout_, |
84 | this->object_, rd, | |
6d03d481 ST |
85 | this->symtab_lock_, |
86 | this->blocker_)); | |
87 | } | |
92e059d8 ILT |
88 | } |
89 | ||
c7912668 ILT |
90 | // Return a debugging name for the task. |
91 | ||
92 | std::string | |
93 | Read_relocs::get_name() const | |
94 | { | |
95 | return "Read_relocs " + this->object_->name(); | |
96 | } | |
97 | ||
6d03d481 ST |
98 | // Gc_process_relocs methods. |
99 | ||
100 | // These tasks process the relocations read by Read_relocs and | |
101 | // determine which sections are referenced and which are garbage. | |
102 | // This task is done only when --gc-sections is used. | |
103 | ||
104 | Task_token* | |
105 | Gc_process_relocs::is_runnable() | |
106 | { | |
107 | if (this->object_->is_locked()) | |
108 | return this->object_->token(); | |
109 | return NULL; | |
110 | } | |
111 | ||
112 | void | |
113 | Gc_process_relocs::locks(Task_locker* tl) | |
114 | { | |
115 | tl->add(this, this->object_->token()); | |
116 | tl->add(this, this->blocker_); | |
117 | } | |
118 | ||
119 | void | |
120 | Gc_process_relocs::run(Workqueue*) | |
121 | { | |
ad0f2072 | 122 | this->object_->gc_process_relocs(this->symtab_, this->layout_, this->rd_); |
6d03d481 ST |
123 | this->object_->release(); |
124 | } | |
125 | ||
126 | // Return a debugging name for the task. | |
127 | ||
128 | std::string | |
129 | Gc_process_relocs::get_name() const | |
130 | { | |
131 | return "Gc_process_relocs " + this->object_->name(); | |
132 | } | |
133 | ||
92e059d8 ILT |
134 | // Scan_relocs methods. |
135 | ||
136 | // These tasks scan the relocations read by Read_relocs and mark up | |
137 | // the symbol table to indicate which relocations are required. We | |
138 | // use a lock on the symbol table to keep them from interfering with | |
139 | // each other. | |
140 | ||
17a1d0a9 ILT |
141 | Task_token* |
142 | Scan_relocs::is_runnable() | |
92e059d8 | 143 | { |
17a1d0a9 ILT |
144 | if (!this->symtab_lock_->is_writable()) |
145 | return this->symtab_lock_; | |
146 | if (this->object_->is_locked()) | |
147 | return this->object_->token(); | |
148 | return NULL; | |
92e059d8 ILT |
149 | } |
150 | ||
151 | // Return the locks we hold: one on the file, one on the symbol table | |
152 | // and one blocker. | |
153 | ||
17a1d0a9 ILT |
154 | void |
155 | Scan_relocs::locks(Task_locker* tl) | |
92e059d8 | 156 | { |
17a1d0a9 ILT |
157 | tl->add(this, this->object_->token()); |
158 | tl->add(this, this->symtab_lock_); | |
159 | tl->add(this, this->blocker_); | |
92e059d8 ILT |
160 | } |
161 | ||
162 | // Scan the relocs. | |
163 | ||
164 | void | |
165 | Scan_relocs::run(Workqueue*) | |
166 | { | |
ad0f2072 | 167 | this->object_->scan_relocs(this->symtab_, this->layout_, this->rd_); |
17a1d0a9 | 168 | this->object_->release(); |
92e059d8 ILT |
169 | delete this->rd_; |
170 | this->rd_ = NULL; | |
171 | } | |
172 | ||
c7912668 ILT |
173 | // Return a debugging name for the task. |
174 | ||
175 | std::string | |
176 | Scan_relocs::get_name() const | |
177 | { | |
178 | return "Scan_relocs " + this->object_->name(); | |
179 | } | |
180 | ||
61ba1cf9 ILT |
181 | // Relocate_task methods. |
182 | ||
730cdc88 | 183 | // We may have to wait for the output sections to be written. |
61ba1cf9 | 184 | |
17a1d0a9 ILT |
185 | Task_token* |
186 | Relocate_task::is_runnable() | |
61ba1cf9 | 187 | { |
730cdc88 ILT |
188 | if (this->object_->relocs_must_follow_section_writes() |
189 | && this->output_sections_blocker_->is_blocked()) | |
17a1d0a9 | 190 | return this->output_sections_blocker_; |
730cdc88 | 191 | |
c7912668 | 192 | if (this->object_->is_locked()) |
17a1d0a9 | 193 | return this->object_->token(); |
c7912668 | 194 | |
17a1d0a9 | 195 | return NULL; |
61ba1cf9 ILT |
196 | } |
197 | ||
198 | // We want to lock the file while we run. We want to unblock | |
730cdc88 | 199 | // INPUT_SECTIONS_BLOCKER and FINAL_BLOCKER when we are done. |
17a1d0a9 | 200 | // INPUT_SECTIONS_BLOCKER may be NULL. |
61ba1cf9 | 201 | |
17a1d0a9 ILT |
202 | void |
203 | Relocate_task::locks(Task_locker* tl) | |
61ba1cf9 | 204 | { |
17a1d0a9 ILT |
205 | if (this->input_sections_blocker_ != NULL) |
206 | tl->add(this, this->input_sections_blocker_); | |
207 | tl->add(this, this->final_blocker_); | |
208 | tl->add(this, this->object_->token()); | |
61ba1cf9 ILT |
209 | } |
210 | ||
211 | // Run the task. | |
212 | ||
213 | void | |
214 | Relocate_task::run(Workqueue*) | |
215 | { | |
ad0f2072 | 216 | this->object_->relocate(this->symtab_, this->layout_, this->of_); |
cb295612 ILT |
217 | |
218 | // This is normally the last thing we will do with an object, so | |
219 | // uncache all views. | |
220 | this->object_->clear_view_cache_marks(); | |
221 | ||
17a1d0a9 | 222 | this->object_->release(); |
61ba1cf9 ILT |
223 | } |
224 | ||
c7912668 ILT |
225 | // Return a debugging name for the task. |
226 | ||
227 | std::string | |
228 | Relocate_task::get_name() const | |
229 | { | |
230 | return "Relocate_task " + this->object_->name(); | |
231 | } | |
232 | ||
92e059d8 ILT |
233 | // Read the relocs and local symbols from the object file and store |
234 | // the information in RD. | |
235 | ||
236 | template<int size, bool big_endian> | |
237 | void | |
f6ce93d6 | 238 | Sized_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) |
92e059d8 ILT |
239 | { |
240 | rd->relocs.clear(); | |
241 | ||
242 | unsigned int shnum = this->shnum(); | |
243 | if (shnum == 0) | |
244 | return; | |
245 | ||
246 | rd->relocs.reserve(shnum / 2); | |
247 | ||
ef9beddf ILT |
248 | const Output_sections& out_sections(this->output_sections()); |
249 | const std::vector<Address>& out_offsets(this->section_offsets_); | |
730cdc88 | 250 | |
645f8123 | 251 | const unsigned char *pshdrs = this->get_view(this->elf_file_.shoff(), |
9eb9fa57 | 252 | shnum * This::shdr_size, |
39d0cb0e | 253 | true, true); |
92e059d8 ILT |
254 | // Skip the first, dummy, section. |
255 | const unsigned char *ps = pshdrs + This::shdr_size; | |
256 | for (unsigned int i = 1; i < shnum; ++i, ps += This::shdr_size) | |
257 | { | |
258 | typename This::Shdr shdr(ps); | |
259 | ||
260 | unsigned int sh_type = shdr.get_sh_type(); | |
261 | if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) | |
262 | continue; | |
263 | ||
d491d34e | 264 | unsigned int shndx = this->adjust_shndx(shdr.get_sh_info()); |
92e059d8 ILT |
265 | if (shndx >= shnum) |
266 | { | |
75f2446e ILT |
267 | this->error(_("relocation section %u has bad info %u"), |
268 | i, shndx); | |
269 | continue; | |
92e059d8 ILT |
270 | } |
271 | ||
ef9beddf | 272 | Output_section* os = out_sections[shndx]; |
730cdc88 | 273 | if (os == NULL) |
92e059d8 ILT |
274 | continue; |
275 | ||
ead1e424 ILT |
276 | // We are scanning relocations in order to fill out the GOT and |
277 | // PLT sections. Relocations for sections which are not | |
278 | // allocated (typically debugging sections) should not add new | |
6a74a719 | 279 | // GOT and PLT entries. So we skip them unless this is a |
031cdbed ILT |
280 | // relocatable link or we need to emit relocations. FIXME: What |
281 | // should we do if a linker script maps a section with SHF_ALLOC | |
282 | // clear to a section with SHF_ALLOC set? | |
7019cd25 ILT |
283 | typename This::Shdr secshdr(pshdrs + shndx * This::shdr_size); |
284 | bool is_section_allocated = ((secshdr.get_sh_flags() & elfcpp::SHF_ALLOC) | |
285 | != 0); | |
286 | if (!is_section_allocated | |
8851ecca ILT |
287 | && !parameters->options().relocatable() |
288 | && !parameters->options().emit_relocs()) | |
7019cd25 | 289 | continue; |
ead1e424 | 290 | |
d491d34e | 291 | if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_) |
92e059d8 | 292 | { |
75f2446e ILT |
293 | this->error(_("relocation section %u uses unexpected " |
294 | "symbol table %u"), | |
d491d34e | 295 | i, this->adjust_shndx(shdr.get_sh_link())); |
75f2446e | 296 | continue; |
92e059d8 ILT |
297 | } |
298 | ||
299 | off_t sh_size = shdr.get_sh_size(); | |
300 | ||
301 | unsigned int reloc_size; | |
302 | if (sh_type == elfcpp::SHT_REL) | |
303 | reloc_size = elfcpp::Elf_sizes<size>::rel_size; | |
304 | else | |
305 | reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
306 | if (reloc_size != shdr.get_sh_entsize()) | |
307 | { | |
75f2446e ILT |
308 | this->error(_("unexpected entsize for reloc section %u: %lu != %u"), |
309 | i, static_cast<unsigned long>(shdr.get_sh_entsize()), | |
310 | reloc_size); | |
311 | continue; | |
92e059d8 ILT |
312 | } |
313 | ||
314 | size_t reloc_count = sh_size / reloc_size; | |
f5c3f225 | 315 | if (static_cast<off_t>(reloc_count * reloc_size) != sh_size) |
92e059d8 | 316 | { |
75f2446e ILT |
317 | this->error(_("reloc section %u size %lu uneven"), |
318 | i, static_cast<unsigned long>(sh_size)); | |
319 | continue; | |
92e059d8 ILT |
320 | } |
321 | ||
322 | rd->relocs.push_back(Section_relocs()); | |
323 | Section_relocs& sr(rd->relocs.back()); | |
324 | sr.reloc_shndx = i; | |
325 | sr.data_shndx = shndx; | |
9eb9fa57 | 326 | sr.contents = this->get_lasting_view(shdr.get_sh_offset(), sh_size, |
39d0cb0e | 327 | true, true); |
92e059d8 ILT |
328 | sr.sh_type = sh_type; |
329 | sr.reloc_count = reloc_count; | |
730cdc88 | 330 | sr.output_section = os; |
a45248e0 | 331 | sr.needs_special_offset_handling = out_offsets[shndx] == invalid_address; |
7019cd25 | 332 | sr.is_data_section_allocated = is_section_allocated; |
92e059d8 ILT |
333 | } |
334 | ||
335 | // Read the local symbols. | |
a3ad94ed | 336 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 337 | if (this->symtab_shndx_ == 0 || this->local_symbol_count_ == 0) |
92e059d8 ILT |
338 | rd->local_symbols = NULL; |
339 | else | |
340 | { | |
341 | typename This::Shdr symtabshdr(pshdrs | |
645f8123 | 342 | + this->symtab_shndx_ * This::shdr_size); |
a3ad94ed | 343 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
92e059d8 ILT |
344 | const int sym_size = This::sym_size; |
345 | const unsigned int loccount = this->local_symbol_count_; | |
a3ad94ed | 346 | gold_assert(loccount == symtabshdr.get_sh_info()); |
92e059d8 ILT |
347 | off_t locsize = loccount * sym_size; |
348 | rd->local_symbols = this->get_lasting_view(symtabshdr.get_sh_offset(), | |
39d0cb0e | 349 | locsize, true, true); |
92e059d8 ILT |
350 | } |
351 | } | |
352 | ||
6d03d481 ST |
353 | // Process the relocs to generate mappings from source sections to referenced |
354 | // sections. This is used during garbage colletion to determine garbage | |
355 | // sections. | |
356 | ||
357 | template<int size, bool big_endian> | |
358 | void | |
ad0f2072 ILT |
359 | Sized_relobj<size, big_endian>::do_gc_process_relocs(Symbol_table* symtab, |
360 | Layout* layout, | |
361 | Read_relocs_data* rd) | |
6d03d481 | 362 | { |
029ba973 ILT |
363 | Sized_target<size, big_endian>* target = |
364 | parameters->sized_target<size, big_endian>(); | |
6d03d481 ST |
365 | |
366 | const unsigned char* local_symbols; | |
367 | if (rd->local_symbols == NULL) | |
368 | local_symbols = NULL; | |
369 | else | |
370 | local_symbols = rd->local_symbols->data(); | |
371 | ||
372 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
373 | p != rd->relocs.end(); | |
374 | ++p) | |
375 | { | |
376 | if (!parameters->options().relocatable()) | |
377 | { | |
378 | // As noted above, when not generating an object file, we | |
379 | // only scan allocated sections. We may see a non-allocated | |
380 | // section here if we are emitting relocs. | |
381 | if (p->is_data_section_allocated) | |
ad0f2072 | 382 | target->gc_process_relocs(symtab, layout, this, |
6d03d481 ST |
383 | p->data_shndx, p->sh_type, |
384 | p->contents->data(), p->reloc_count, | |
385 | p->output_section, | |
386 | p->needs_special_offset_handling, | |
387 | this->local_symbol_count_, | |
388 | local_symbols); | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | ||
92e059d8 ILT |
394 | // Scan the relocs and adjust the symbol table. This looks for |
395 | // relocations which require GOT/PLT/COPY relocations. | |
396 | ||
397 | template<int size, bool big_endian> | |
398 | void | |
ad0f2072 | 399 | Sized_relobj<size, big_endian>::do_scan_relocs(Symbol_table* symtab, |
ead1e424 | 400 | Layout* layout, |
92e059d8 ILT |
401 | Read_relocs_data* rd) |
402 | { | |
029ba973 ILT |
403 | Sized_target<size, big_endian>* target = |
404 | parameters->sized_target<size, big_endian>(); | |
92e059d8 ILT |
405 | |
406 | const unsigned char* local_symbols; | |
407 | if (rd->local_symbols == NULL) | |
408 | local_symbols = NULL; | |
409 | else | |
410 | local_symbols = rd->local_symbols->data(); | |
411 | ||
412 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
413 | p != rd->relocs.end(); | |
414 | ++p) | |
415 | { | |
6d03d481 ST |
416 | // When garbage collection is on, unreferenced sections are not included |
417 | // in the link that would have been included normally. This is known only | |
418 | // after Read_relocs hence this check has to be done again. | |
032ce4e9 ST |
419 | if (parameters->options().gc_sections() |
420 | || parameters->options().icf_enabled()) | |
6d03d481 ST |
421 | { |
422 | if (p->output_section == NULL) | |
423 | continue; | |
424 | } | |
8851ecca | 425 | if (!parameters->options().relocatable()) |
7019cd25 ILT |
426 | { |
427 | // As noted above, when not generating an object file, we | |
428 | // only scan allocated sections. We may see a non-allocated | |
429 | // section here if we are emitting relocs. | |
430 | if (p->is_data_section_allocated) | |
ad0f2072 | 431 | target->scan_relocs(symtab, layout, this, p->data_shndx, |
7019cd25 ILT |
432 | p->sh_type, p->contents->data(), |
433 | p->reloc_count, p->output_section, | |
434 | p->needs_special_offset_handling, | |
435 | this->local_symbol_count_, | |
436 | local_symbols); | |
8851ecca | 437 | if (parameters->options().emit_relocs()) |
ad0f2072 | 438 | this->emit_relocs_scan(symtab, layout, local_symbols, p); |
7019cd25 | 439 | } |
6a74a719 ILT |
440 | else |
441 | { | |
442 | Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx); | |
443 | gold_assert(rr != NULL); | |
444 | rr->set_reloc_count(p->reloc_count); | |
ad0f2072 | 445 | target->scan_relocatable_relocs(symtab, layout, this, |
6a74a719 ILT |
446 | p->data_shndx, p->sh_type, |
447 | p->contents->data(), | |
448 | p->reloc_count, | |
449 | p->output_section, | |
450 | p->needs_special_offset_handling, | |
451 | this->local_symbol_count_, | |
452 | local_symbols, | |
453 | rr); | |
454 | } | |
455 | ||
92e059d8 ILT |
456 | delete p->contents; |
457 | p->contents = NULL; | |
458 | } | |
459 | ||
460 | if (rd->local_symbols != NULL) | |
461 | { | |
462 | delete rd->local_symbols; | |
463 | rd->local_symbols = NULL; | |
464 | } | |
465 | } | |
466 | ||
7019cd25 ILT |
467 | // This is a strategy class we use when scanning for --emit-relocs. |
468 | ||
469 | template<int sh_type> | |
470 | class Emit_relocs_strategy | |
471 | { | |
472 | public: | |
473 | // A local non-section symbol. | |
474 | inline Relocatable_relocs::Reloc_strategy | |
68943102 | 475 | local_non_section_strategy(unsigned int, Relobj*, unsigned int) |
7019cd25 ILT |
476 | { return Relocatable_relocs::RELOC_COPY; } |
477 | ||
478 | // A local section symbol. | |
479 | inline Relocatable_relocs::Reloc_strategy | |
480 | local_section_strategy(unsigned int, Relobj*) | |
481 | { | |
482 | if (sh_type == elfcpp::SHT_RELA) | |
483 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
484 | else | |
485 | { | |
486 | // The addend is stored in the section contents. Since this | |
487 | // is not a relocatable link, we are going to apply the | |
488 | // relocation contents to the section as usual. This means | |
489 | // that we have no way to record the original addend. If the | |
490 | // original addend is not zero, there is basically no way for | |
491 | // the user to handle this correctly. Caveat emptor. | |
492 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0; | |
493 | } | |
494 | } | |
495 | ||
496 | // A global symbol. | |
497 | inline Relocatable_relocs::Reloc_strategy | |
498 | global_strategy(unsigned int, Relobj*, unsigned int) | |
499 | { return Relocatable_relocs::RELOC_COPY; } | |
500 | }; | |
501 | ||
502 | // Scan the input relocations for --emit-relocs. | |
503 | ||
504 | template<int size, bool big_endian> | |
505 | void | |
506 | Sized_relobj<size, big_endian>::emit_relocs_scan( | |
7019cd25 ILT |
507 | Symbol_table* symtab, |
508 | Layout* layout, | |
509 | const unsigned char* plocal_syms, | |
510 | const Read_relocs_data::Relocs_list::iterator& p) | |
511 | { | |
512 | Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx); | |
513 | gold_assert(rr != NULL); | |
514 | rr->set_reloc_count(p->reloc_count); | |
515 | ||
516 | if (p->sh_type == elfcpp::SHT_REL) | |
ad0f2072 | 517 | this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(symtab, layout, |
7019cd25 ILT |
518 | plocal_syms, p, rr); |
519 | else | |
520 | { | |
521 | gold_assert(p->sh_type == elfcpp::SHT_RELA); | |
ad0f2072 ILT |
522 | this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(symtab, layout, |
523 | plocal_syms, p, rr); | |
7019cd25 ILT |
524 | } |
525 | } | |
526 | ||
527 | // Scan the input relocation for --emit-relocs, templatized on the | |
528 | // type of the relocation section. | |
529 | ||
530 | template<int size, bool big_endian> | |
531 | template<int sh_type> | |
532 | void | |
533 | Sized_relobj<size, big_endian>::emit_relocs_scan_reltype( | |
7019cd25 ILT |
534 | Symbol_table* symtab, |
535 | Layout* layout, | |
536 | const unsigned char* plocal_syms, | |
537 | const Read_relocs_data::Relocs_list::iterator& p, | |
538 | Relocatable_relocs* rr) | |
539 | { | |
540 | scan_relocatable_relocs<size, big_endian, sh_type, | |
541 | Emit_relocs_strategy<sh_type> >( | |
7019cd25 ILT |
542 | symtab, |
543 | layout, | |
544 | this, | |
545 | p->data_shndx, | |
546 | p->contents->data(), | |
547 | p->reloc_count, | |
548 | p->output_section, | |
549 | p->needs_special_offset_handling, | |
550 | this->local_symbol_count_, | |
551 | plocal_syms, | |
552 | rr); | |
553 | } | |
554 | ||
61ba1cf9 ILT |
555 | // Relocate the input sections and write out the local symbols. |
556 | ||
557 | template<int size, bool big_endian> | |
558 | void | |
ad0f2072 | 559 | Sized_relobj<size, big_endian>::do_relocate(const Symbol_table* symtab, |
92e059d8 | 560 | const Layout* layout, |
61ba1cf9 ILT |
561 | Output_file* of) |
562 | { | |
563 | unsigned int shnum = this->shnum(); | |
564 | ||
565 | // Read the section headers. | |
645f8123 | 566 | const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(), |
9eb9fa57 | 567 | shnum * This::shdr_size, |
39d0cb0e | 568 | true, true); |
61ba1cf9 ILT |
569 | |
570 | Views views; | |
571 | views.resize(shnum); | |
572 | ||
573 | // Make two passes over the sections. The first one copies the | |
574 | // section data to the output file. The second one applies | |
575 | // relocations. | |
576 | ||
577 | this->write_sections(pshdrs, of, &views); | |
578 | ||
a9a60db6 ILT |
579 | // To speed up relocations, we set up hash tables for fast lookup of |
580 | // input offsets to output addresses. | |
581 | this->initialize_input_to_output_maps(); | |
582 | ||
61ba1cf9 ILT |
583 | // Apply relocations. |
584 | ||
ad0f2072 | 585 | this->relocate_sections(symtab, layout, pshdrs, &views); |
61ba1cf9 | 586 | |
a9a60db6 ILT |
587 | // After we've done the relocations, we release the hash tables, |
588 | // since we no longer need them. | |
589 | this->free_input_to_output_maps(); | |
590 | ||
61ba1cf9 ILT |
591 | // Write out the accumulated views. |
592 | for (unsigned int i = 1; i < shnum; ++i) | |
593 | { | |
594 | if (views[i].view != NULL) | |
730cdc88 | 595 | { |
96803768 ILT |
596 | if (!views[i].is_postprocessing_view) |
597 | { | |
598 | if (views[i].is_input_output_view) | |
599 | of->write_input_output_view(views[i].offset, | |
600 | views[i].view_size, | |
601 | views[i].view); | |
602 | else | |
603 | of->write_output_view(views[i].offset, views[i].view_size, | |
604 | views[i].view); | |
605 | } | |
730cdc88 | 606 | } |
61ba1cf9 ILT |
607 | } |
608 | ||
609 | // Write out the local symbols. | |
d491d34e ILT |
610 | this->write_local_symbols(of, layout->sympool(), layout->dynpool(), |
611 | layout->symtab_xindex(), layout->dynsym_xindex()); | |
cb295612 ILT |
612 | |
613 | // We should no longer need the local symbol values. | |
614 | this->clear_local_symbols(); | |
61ba1cf9 ILT |
615 | } |
616 | ||
cb295612 ILT |
617 | // Sort a Read_multiple vector by file offset. |
618 | struct Read_multiple_compare | |
619 | { | |
620 | inline bool | |
621 | operator()(const File_read::Read_multiple_entry& rme1, | |
622 | const File_read::Read_multiple_entry& rme2) const | |
623 | { return rme1.file_offset < rme2.file_offset; } | |
624 | }; | |
625 | ||
61ba1cf9 ILT |
626 | // Write section data to the output file. PSHDRS points to the |
627 | // section headers. Record the views in *PVIEWS for use when | |
628 | // relocating. | |
629 | ||
630 | template<int size, bool big_endian> | |
631 | void | |
f6ce93d6 | 632 | Sized_relobj<size, big_endian>::write_sections(const unsigned char* pshdrs, |
61ba1cf9 | 633 | Output_file* of, |
cb295612 | 634 | Views* pviews) |
61ba1cf9 ILT |
635 | { |
636 | unsigned int shnum = this->shnum(); | |
ef9beddf ILT |
637 | const Output_sections& out_sections(this->output_sections()); |
638 | const std::vector<Address>& out_offsets(this->section_offsets_); | |
61ba1cf9 | 639 | |
cb295612 ILT |
640 | File_read::Read_multiple rm; |
641 | bool is_sorted = true; | |
642 | ||
61ba1cf9 ILT |
643 | const unsigned char* p = pshdrs + This::shdr_size; |
644 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
645 | { | |
646 | View_size* pvs = &(*pviews)[i]; | |
647 | ||
648 | pvs->view = NULL; | |
649 | ||
ef9beddf | 650 | const Output_section* os = out_sections[i]; |
61ba1cf9 ILT |
651 | if (os == NULL) |
652 | continue; | |
ef9beddf | 653 | Address output_offset = out_offsets[i]; |
61ba1cf9 ILT |
654 | |
655 | typename This::Shdr shdr(p); | |
656 | ||
657 | if (shdr.get_sh_type() == elfcpp::SHT_NOBITS) | |
658 | continue; | |
659 | ||
8851ecca ILT |
660 | if ((parameters->options().relocatable() |
661 | || parameters->options().emit_relocs()) | |
6a74a719 ILT |
662 | && (shdr.get_sh_type() == elfcpp::SHT_REL |
663 | || shdr.get_sh_type() == elfcpp::SHT_RELA) | |
664 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0) | |
665 | { | |
7019cd25 ILT |
666 | // This is a reloc section in a relocatable link or when |
667 | // emitting relocs. We don't need to read the input file. | |
668 | // The size and file offset are stored in the | |
669 | // Relocatable_relocs structure. | |
6a74a719 ILT |
670 | Relocatable_relocs* rr = this->relocatable_relocs(i); |
671 | gold_assert(rr != NULL); | |
672 | Output_data* posd = rr->output_data(); | |
673 | gold_assert(posd != NULL); | |
674 | ||
675 | pvs->offset = posd->offset(); | |
676 | pvs->view_size = posd->data_size(); | |
677 | pvs->view = of->get_output_view(pvs->offset, pvs->view_size); | |
678 | pvs->address = posd->address(); | |
679 | pvs->is_input_output_view = false; | |
680 | pvs->is_postprocessing_view = false; | |
681 | ||
682 | continue; | |
683 | } | |
684 | ||
96803768 ILT |
685 | // In the normal case, this input section is simply mapped to |
686 | // the output section at offset OUTPUT_OFFSET. | |
687 | ||
eff45813 CC |
688 | // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is |
689 | // handled specially--e.g., a .eh_frame section. The relocation | |
96803768 ILT |
690 | // routines need to check for each reloc where it should be |
691 | // applied. For this case, we need an input/output view for the | |
692 | // entire contents of the section in the output file. We don't | |
693 | // want to copy the contents of the input section to the output | |
694 | // section; the output section contents were already written, | |
695 | // and we waited for them in Relocate_task::is_runnable because | |
696 | // relocs_must_follow_section_writes is set for the object. | |
697 | ||
698 | // Regardless of which of the above cases is true, we have to | |
699 | // check requires_postprocessing of the output section. If that | |
700 | // is false, then we work with views of the output file | |
701 | // directly. If it is true, then we work with a separate | |
702 | // buffer, and the output section is responsible for writing the | |
703 | // final data to the output file. | |
704 | ||
705 | off_t output_section_offset; | |
ef9beddf | 706 | Address output_section_size; |
96803768 ILT |
707 | if (!os->requires_postprocessing()) |
708 | { | |
709 | output_section_offset = os->offset(); | |
ef9beddf | 710 | output_section_size = convert_types<Address, off_t>(os->data_size()); |
96803768 ILT |
711 | } |
712 | else | |
713 | { | |
714 | output_section_offset = 0; | |
ef9beddf ILT |
715 | output_section_size = |
716 | convert_types<Address, off_t>(os->postprocessing_buffer_size()); | |
96803768 ILT |
717 | } |
718 | ||
730cdc88 | 719 | off_t view_start; |
fe8718a4 | 720 | section_size_type view_size; |
eff45813 | 721 | if (output_offset != invalid_address) |
730cdc88 | 722 | { |
96803768 | 723 | view_start = output_section_offset + output_offset; |
fe8718a4 | 724 | view_size = convert_to_section_size_type(shdr.get_sh_size()); |
730cdc88 ILT |
725 | } |
726 | else | |
727 | { | |
96803768 | 728 | view_start = output_section_offset; |
fe8718a4 | 729 | view_size = convert_to_section_size_type(output_section_size); |
730cdc88 | 730 | } |
61ba1cf9 | 731 | |
730cdc88 | 732 | if (view_size == 0) |
ead1e424 ILT |
733 | continue; |
734 | ||
eff45813 | 735 | gold_assert(output_offset == invalid_address |
ef9beddf | 736 | || output_offset + view_size <= output_section_size); |
ead1e424 | 737 | |
730cdc88 | 738 | unsigned char* view; |
96803768 ILT |
739 | if (os->requires_postprocessing()) |
740 | { | |
741 | unsigned char* buffer = os->postprocessing_buffer(); | |
742 | view = buffer + view_start; | |
eff45813 | 743 | if (output_offset != invalid_address) |
cb295612 ILT |
744 | { |
745 | off_t sh_offset = shdr.get_sh_offset(); | |
746 | if (!rm.empty() && rm.back().file_offset > sh_offset) | |
747 | is_sorted = false; | |
748 | rm.push_back(File_read::Read_multiple_entry(sh_offset, | |
749 | view_size, view)); | |
750 | } | |
96803768 | 751 | } |
730cdc88 ILT |
752 | else |
753 | { | |
eff45813 | 754 | if (output_offset == invalid_address) |
96803768 ILT |
755 | view = of->get_input_output_view(view_start, view_size); |
756 | else | |
757 | { | |
758 | view = of->get_output_view(view_start, view_size); | |
cb295612 ILT |
759 | off_t sh_offset = shdr.get_sh_offset(); |
760 | if (!rm.empty() && rm.back().file_offset > sh_offset) | |
761 | is_sorted = false; | |
762 | rm.push_back(File_read::Read_multiple_entry(sh_offset, | |
763 | view_size, view)); | |
96803768 | 764 | } |
730cdc88 | 765 | } |
92e059d8 | 766 | |
61ba1cf9 | 767 | pvs->view = view; |
730cdc88 | 768 | pvs->address = os->address(); |
eff45813 | 769 | if (output_offset != invalid_address) |
730cdc88 ILT |
770 | pvs->address += output_offset; |
771 | pvs->offset = view_start; | |
772 | pvs->view_size = view_size; | |
eff45813 | 773 | pvs->is_input_output_view = output_offset == invalid_address; |
96803768 | 774 | pvs->is_postprocessing_view = os->requires_postprocessing(); |
61ba1cf9 | 775 | } |
cb295612 ILT |
776 | |
777 | // Actually read the data. | |
778 | if (!rm.empty()) | |
779 | { | |
780 | if (!is_sorted) | |
781 | std::sort(rm.begin(), rm.end(), Read_multiple_compare()); | |
782 | this->read_multiple(rm); | |
783 | } | |
61ba1cf9 ILT |
784 | } |
785 | ||
786 | // Relocate section data. VIEWS points to the section data as views | |
787 | // in the output file. | |
788 | ||
789 | template<int size, bool big_endian> | |
790 | void | |
72adc4fa | 791 | Sized_relobj<size, big_endian>::do_relocate_sections( |
92e059d8 ILT |
792 | const Symbol_table* symtab, |
793 | const Layout* layout, | |
794 | const unsigned char* pshdrs, | |
795 | Views* pviews) | |
61ba1cf9 ILT |
796 | { |
797 | unsigned int shnum = this->shnum(); | |
029ba973 ILT |
798 | Sized_target<size, big_endian>* target = |
799 | parameters->sized_target<size, big_endian>(); | |
61ba1cf9 | 800 | |
ef9beddf ILT |
801 | const Output_sections& out_sections(this->output_sections()); |
802 | const std::vector<Address>& out_offsets(this->section_offsets_); | |
730cdc88 | 803 | |
92e059d8 | 804 | Relocate_info<size, big_endian> relinfo; |
92e059d8 ILT |
805 | relinfo.symtab = symtab; |
806 | relinfo.layout = layout; | |
807 | relinfo.object = this; | |
92e059d8 | 808 | |
61ba1cf9 ILT |
809 | const unsigned char* p = pshdrs + This::shdr_size; |
810 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
811 | { | |
812 | typename This::Shdr shdr(p); | |
813 | ||
814 | unsigned int sh_type = shdr.get_sh_type(); | |
815 | if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) | |
816 | continue; | |
817 | ||
1307d6cd ILT |
818 | off_t sh_size = shdr.get_sh_size(); |
819 | if (sh_size == 0) | |
820 | continue; | |
821 | ||
d491d34e | 822 | unsigned int index = this->adjust_shndx(shdr.get_sh_info()); |
61ba1cf9 ILT |
823 | if (index >= this->shnum()) |
824 | { | |
75f2446e ILT |
825 | this->error(_("relocation section %u has bad info %u"), |
826 | i, index); | |
827 | continue; | |
61ba1cf9 ILT |
828 | } |
829 | ||
ef9beddf | 830 | Output_section* os = out_sections[index]; |
730cdc88 | 831 | if (os == NULL) |
61ba1cf9 ILT |
832 | { |
833 | // This relocation section is against a section which we | |
834 | // discarded. | |
835 | continue; | |
836 | } | |
ef9beddf | 837 | Address output_offset = out_offsets[index]; |
61ba1cf9 | 838 | |
a3ad94ed | 839 | gold_assert((*pviews)[index].view != NULL); |
8851ecca | 840 | if (parameters->options().relocatable()) |
6a74a719 | 841 | gold_assert((*pviews)[i].view != NULL); |
61ba1cf9 | 842 | |
d491d34e | 843 | if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_) |
61ba1cf9 | 844 | { |
75f2446e ILT |
845 | gold_error(_("relocation section %u uses unexpected " |
846 | "symbol table %u"), | |
d491d34e | 847 | i, this->adjust_shndx(shdr.get_sh_link())); |
75f2446e | 848 | continue; |
61ba1cf9 ILT |
849 | } |
850 | ||
61ba1cf9 | 851 | const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(), |
39d0cb0e | 852 | sh_size, true, false); |
61ba1cf9 ILT |
853 | |
854 | unsigned int reloc_size; | |
855 | if (sh_type == elfcpp::SHT_REL) | |
856 | reloc_size = elfcpp::Elf_sizes<size>::rel_size; | |
857 | else | |
858 | reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
859 | ||
860 | if (reloc_size != shdr.get_sh_entsize()) | |
861 | { | |
75f2446e ILT |
862 | gold_error(_("unexpected entsize for reloc section %u: %lu != %u"), |
863 | i, static_cast<unsigned long>(shdr.get_sh_entsize()), | |
730cdc88 | 864 | reloc_size); |
75f2446e | 865 | continue; |
61ba1cf9 ILT |
866 | } |
867 | ||
868 | size_t reloc_count = sh_size / reloc_size; | |
f5c3f225 | 869 | if (static_cast<off_t>(reloc_count * reloc_size) != sh_size) |
61ba1cf9 | 870 | { |
75f2446e ILT |
871 | gold_error(_("reloc section %u size %lu uneven"), |
872 | i, static_cast<unsigned long>(sh_size)); | |
873 | continue; | |
61ba1cf9 ILT |
874 | } |
875 | ||
eff45813 | 876 | gold_assert(output_offset != invalid_address |
96803768 ILT |
877 | || this->relocs_must_follow_section_writes()); |
878 | ||
92e059d8 | 879 | relinfo.reloc_shndx = i; |
82bb573a | 880 | relinfo.reloc_shdr = p; |
92e059d8 | 881 | relinfo.data_shndx = index; |
82bb573a | 882 | relinfo.data_shdr = pshdrs + index * This::shdr_size; |
364c7fa5 ILT |
883 | unsigned char* view = (*pviews)[index].view; |
884 | Address address = (*pviews)[index].address; | |
885 | section_size_type view_size = (*pviews)[index].view_size; | |
886 | ||
887 | Reloc_symbol_changes* reloc_map = NULL; | |
888 | if (this->uses_split_stack() && output_offset != invalid_address) | |
889 | { | |
890 | typename This::Shdr data_shdr(pshdrs + index * This::shdr_size); | |
891 | if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
892 | this->split_stack_adjust(symtab, pshdrs, sh_type, index, | |
893 | prelocs, reloc_count, view, view_size, | |
894 | &reloc_map); | |
895 | } | |
896 | ||
8851ecca | 897 | if (!parameters->options().relocatable()) |
7019cd25 | 898 | { |
364c7fa5 | 899 | target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os, |
eff45813 | 900 | output_offset == invalid_address, |
364c7fa5 | 901 | view, address, view_size, reloc_map); |
8851ecca | 902 | if (parameters->options().emit_relocs()) |
7019cd25 | 903 | this->emit_relocs(&relinfo, i, sh_type, prelocs, reloc_count, |
364c7fa5 ILT |
904 | os, output_offset, view, address, view_size, |
905 | (*pviews)[i].view, (*pviews)[i].view_size); | |
7019cd25 | 906 | } |
6a74a719 ILT |
907 | else |
908 | { | |
909 | Relocatable_relocs* rr = this->relocatable_relocs(i); | |
364c7fa5 ILT |
910 | target->relocate_for_relocatable(&relinfo, sh_type, prelocs, |
911 | reloc_count, os, output_offset, rr, | |
912 | view, address, view_size, | |
6a74a719 ILT |
913 | (*pviews)[i].view, |
914 | (*pviews)[i].view_size); | |
915 | } | |
61ba1cf9 ILT |
916 | } |
917 | } | |
918 | ||
7019cd25 ILT |
919 | // Emit the relocs for --emit-relocs. |
920 | ||
921 | template<int size, bool big_endian> | |
922 | void | |
923 | Sized_relobj<size, big_endian>::emit_relocs( | |
924 | const Relocate_info<size, big_endian>* relinfo, | |
925 | unsigned int i, | |
926 | unsigned int sh_type, | |
927 | const unsigned char* prelocs, | |
928 | size_t reloc_count, | |
929 | Output_section* output_section, | |
ef9beddf | 930 | typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section, |
7019cd25 ILT |
931 | unsigned char* view, |
932 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
933 | section_size_type view_size, | |
934 | unsigned char* reloc_view, | |
935 | section_size_type reloc_view_size) | |
936 | { | |
937 | if (sh_type == elfcpp::SHT_REL) | |
938 | this->emit_relocs_reltype<elfcpp::SHT_REL>(relinfo, i, prelocs, | |
939 | reloc_count, output_section, | |
940 | offset_in_output_section, | |
941 | view, address, view_size, | |
942 | reloc_view, reloc_view_size); | |
943 | else | |
944 | { | |
945 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
946 | this->emit_relocs_reltype<elfcpp::SHT_RELA>(relinfo, i, prelocs, | |
947 | reloc_count, output_section, | |
948 | offset_in_output_section, | |
949 | view, address, view_size, | |
950 | reloc_view, reloc_view_size); | |
951 | } | |
952 | } | |
953 | ||
954 | // Emit the relocs for --emit-relocs, templatized on the type of the | |
955 | // relocation section. | |
956 | ||
957 | template<int size, bool big_endian> | |
958 | template<int sh_type> | |
959 | void | |
960 | Sized_relobj<size, big_endian>::emit_relocs_reltype( | |
961 | const Relocate_info<size, big_endian>* relinfo, | |
962 | unsigned int i, | |
963 | const unsigned char* prelocs, | |
964 | size_t reloc_count, | |
965 | Output_section* output_section, | |
ef9beddf | 966 | typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section, |
7019cd25 ILT |
967 | unsigned char* view, |
968 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
969 | section_size_type view_size, | |
970 | unsigned char* reloc_view, | |
971 | section_size_type reloc_view_size) | |
972 | { | |
973 | const Relocatable_relocs* rr = this->relocatable_relocs(i); | |
974 | relocate_for_relocatable<size, big_endian, sh_type>( | |
975 | relinfo, | |
976 | prelocs, | |
977 | reloc_count, | |
978 | output_section, | |
979 | offset_in_output_section, | |
980 | rr, | |
981 | view, | |
982 | address, | |
983 | view_size, | |
984 | reloc_view, | |
985 | reloc_view_size); | |
986 | } | |
987 | ||
a9a60db6 ILT |
988 | // Create merge hash tables for the local symbols. These are used to |
989 | // speed up relocations. | |
990 | ||
991 | template<int size, bool big_endian> | |
992 | void | |
993 | Sized_relobj<size, big_endian>::initialize_input_to_output_maps() | |
994 | { | |
995 | const unsigned int loccount = this->local_symbol_count_; | |
996 | for (unsigned int i = 1; i < loccount; ++i) | |
997 | { | |
998 | Symbol_value<size>& lv(this->local_values_[i]); | |
999 | lv.initialize_input_to_output_map(this); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | // Free merge hash tables for the local symbols. | |
1004 | ||
1005 | template<int size, bool big_endian> | |
1006 | void | |
1007 | Sized_relobj<size, big_endian>::free_input_to_output_maps() | |
1008 | { | |
1009 | const unsigned int loccount = this->local_symbol_count_; | |
1010 | for (unsigned int i = 1; i < loccount; ++i) | |
1011 | { | |
1012 | Symbol_value<size>& lv(this->local_values_[i]); | |
1013 | lv.free_input_to_output_map(); | |
1014 | } | |
1015 | } | |
1016 | ||
364c7fa5 ILT |
1017 | // If an object was compiled with -fsplit-stack, this is called to |
1018 | // check whether any relocations refer to functions defined in objects | |
1019 | // which were not compiled with -fsplit-stack. If they were, then we | |
1020 | // need to apply some target-specific adjustments to request | |
1021 | // additional stack space. | |
1022 | ||
1023 | template<int size, bool big_endian> | |
1024 | void | |
1025 | Sized_relobj<size, big_endian>::split_stack_adjust( | |
1026 | const Symbol_table* symtab, | |
1027 | const unsigned char* pshdrs, | |
1028 | unsigned int sh_type, | |
1029 | unsigned int shndx, | |
1030 | const unsigned char* prelocs, | |
1031 | size_t reloc_count, | |
1032 | unsigned char* view, | |
1033 | section_size_type view_size, | |
1034 | Reloc_symbol_changes** reloc_map) | |
1035 | { | |
1036 | if (sh_type == elfcpp::SHT_REL) | |
1037 | this->split_stack_adjust_reltype<elfcpp::SHT_REL>(symtab, pshdrs, shndx, | |
1038 | prelocs, reloc_count, | |
1039 | view, view_size, | |
1040 | reloc_map); | |
1041 | else | |
1042 | { | |
1043 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
1044 | this->split_stack_adjust_reltype<elfcpp::SHT_RELA>(symtab, pshdrs, shndx, | |
1045 | prelocs, reloc_count, | |
1046 | view, view_size, | |
1047 | reloc_map); | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | // Adjust for -fsplit-stack, templatized on the type of the relocation | |
1052 | // section. | |
1053 | ||
1054 | template<int size, bool big_endian> | |
1055 | template<int sh_type> | |
1056 | void | |
1057 | Sized_relobj<size, big_endian>::split_stack_adjust_reltype( | |
1058 | const Symbol_table* symtab, | |
1059 | const unsigned char* pshdrs, | |
1060 | unsigned int shndx, | |
1061 | const unsigned char* prelocs, | |
1062 | size_t reloc_count, | |
1063 | unsigned char* view, | |
1064 | section_size_type view_size, | |
1065 | Reloc_symbol_changes** reloc_map) | |
1066 | { | |
1067 | typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype; | |
1068 | const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size; | |
1069 | ||
1070 | size_t local_count = this->local_symbol_count(); | |
1071 | ||
1072 | std::vector<section_offset_type> non_split_refs; | |
1073 | ||
1074 | const unsigned char* pr = prelocs; | |
1075 | for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size) | |
1076 | { | |
1077 | Reltype reloc(pr); | |
1078 | ||
1079 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); | |
1080 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1081 | if (r_sym < local_count) | |
1082 | continue; | |
1083 | ||
1084 | const Symbol* gsym = this->global_symbol(r_sym); | |
1085 | gold_assert(gsym != NULL); | |
1086 | if (gsym->is_forwarder()) | |
1087 | gsym = symtab->resolve_forwards(gsym); | |
1088 | ||
1089 | // See if this relocation refers to a function defined in an | |
1090 | // object compiled without -fsplit-stack. Note that we don't | |
1091 | // care about the type of relocation--this means that in some | |
1092 | // cases we will ask for a large stack unnecessarily, but this | |
1093 | // is not fatal. FIXME: Some targets have symbols which are | |
1094 | // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC. | |
1095 | if (gsym->type() == elfcpp::STT_FUNC | |
1096 | && !gsym->is_undefined() | |
1097 | && gsym->source() == Symbol::FROM_OBJECT | |
1098 | && !gsym->object()->uses_split_stack()) | |
1099 | { | |
1100 | section_offset_type offset = | |
1101 | convert_to_section_size_type(reloc.get_r_offset()); | |
1102 | non_split_refs.push_back(offset); | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | if (non_split_refs.empty()) | |
1107 | return; | |
1108 | ||
1109 | // At this point, every entry in NON_SPLIT_REFS indicates a | |
1110 | // relocation which refers to a function in an object compiled | |
1111 | // without -fsplit-stack. We now have to convert that list into a | |
1112 | // set of offsets to functions. First, we find all the functions. | |
1113 | ||
1114 | Function_offsets function_offsets; | |
1115 | this->find_functions(pshdrs, shndx, &function_offsets); | |
1116 | if (function_offsets.empty()) | |
1117 | return; | |
1118 | ||
1119 | // Now get a list of the function with references to non split-stack | |
1120 | // code. | |
1121 | ||
1122 | Function_offsets calls_non_split; | |
1123 | for (std::vector<section_offset_type>::const_iterator p | |
1124 | = non_split_refs.begin(); | |
1125 | p != non_split_refs.end(); | |
1126 | ++p) | |
1127 | { | |
1128 | Function_offsets::const_iterator low = function_offsets.lower_bound(*p); | |
1129 | if (low == function_offsets.end()) | |
1130 | --low; | |
1131 | else if (low->first == *p) | |
1132 | ; | |
1133 | else if (low == function_offsets.begin()) | |
1134 | continue; | |
1135 | else | |
1136 | --low; | |
1137 | ||
1138 | calls_non_split.insert(*low); | |
1139 | } | |
1140 | if (calls_non_split.empty()) | |
1141 | return; | |
1142 | ||
1143 | // Now we have a set of functions to adjust. The adjustments are | |
1144 | // target specific. Besides changing the output section view | |
1145 | // however, it likes, the target may request a relocation change | |
1146 | // from one global symbol name to another. | |
1147 | ||
1148 | for (Function_offsets::const_iterator p = calls_non_split.begin(); | |
1149 | p != calls_non_split.end(); | |
1150 | ++p) | |
1151 | { | |
1152 | std::string from; | |
1153 | std::string to; | |
1154 | parameters->target().calls_non_split(this, shndx, p->first, p->second, | |
1155 | view, view_size, &from, &to); | |
1156 | if (!from.empty()) | |
1157 | { | |
1158 | gold_assert(!to.empty()); | |
1159 | Symbol* tosym = NULL; | |
1160 | ||
1161 | // Find relocations in the relevant function which are for | |
1162 | // FROM. | |
1163 | pr = prelocs; | |
1164 | for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size) | |
1165 | { | |
1166 | Reltype reloc(pr); | |
1167 | ||
1168 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = | |
1169 | reloc.get_r_info(); | |
1170 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1171 | if (r_sym < local_count) | |
1172 | continue; | |
1173 | ||
1174 | section_offset_type offset = | |
1175 | convert_to_section_size_type(reloc.get_r_offset()); | |
1176 | if (offset < p->first | |
1177 | || (offset | |
1178 | >= (p->first | |
1179 | + static_cast<section_offset_type>(p->second)))) | |
1180 | continue; | |
1181 | ||
1182 | const Symbol* gsym = this->global_symbol(r_sym); | |
1183 | if (from == gsym->name()) | |
1184 | { | |
1185 | if (tosym == NULL) | |
1186 | { | |
1187 | tosym = symtab->lookup(to.c_str()); | |
1188 | if (tosym == NULL) | |
1189 | { | |
1190 | this->error(_("could not convert call " | |
1191 | "to '%s' to '%s'"), | |
1192 | from.c_str(), to.c_str()); | |
1193 | break; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | if (*reloc_map == NULL) | |
1198 | *reloc_map = new Reloc_symbol_changes(reloc_count); | |
1199 | (*reloc_map)->set(i, tosym); | |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | // Find all the function in this object defined in section SHNDX. | |
1207 | // Store their offsets in the section in FUNCTION_OFFSETS. | |
1208 | ||
1209 | template<int size, bool big_endian> | |
1210 | void | |
1211 | Sized_relobj<size, big_endian>::find_functions( | |
1212 | const unsigned char* pshdrs, | |
1213 | unsigned int shndx, | |
1214 | Sized_relobj<size, big_endian>::Function_offsets* function_offsets) | |
1215 | { | |
1216 | // We need to read the symbols to find the functions. If we wanted | |
1217 | // to, we could cache reading the symbols across all sections in the | |
1218 | // object. | |
1219 | const unsigned int symtab_shndx = this->symtab_shndx_; | |
1220 | typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size); | |
1221 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); | |
1222 | ||
1223 | typename elfcpp::Elf_types<size>::Elf_WXword sh_size = | |
1224 | symtabshdr.get_sh_size(); | |
1225 | const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), | |
1226 | sh_size, true, true); | |
1227 | ||
1228 | const int sym_size = This::sym_size; | |
1229 | const unsigned int symcount = sh_size / sym_size; | |
1230 | for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size) | |
1231 | { | |
1232 | typename elfcpp::Sym<size, big_endian> isym(psyms); | |
1233 | ||
1234 | // FIXME: Some targets can have functions which do not have type | |
1235 | // STT_FUNC, e.g., STT_ARM_TFUNC. | |
1236 | if (isym.get_st_type() != elfcpp::STT_FUNC | |
1237 | || isym.get_st_size() == 0) | |
1238 | continue; | |
1239 | ||
1240 | bool is_ordinary; | |
1241 | unsigned int sym_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(), | |
1242 | &is_ordinary); | |
1243 | if (!is_ordinary || sym_shndx != shndx) | |
1244 | continue; | |
1245 | ||
1246 | section_offset_type value = | |
1247 | convert_to_section_size_type(isym.get_st_value()); | |
1248 | section_size_type fnsize = | |
1249 | convert_to_section_size_type(isym.get_st_size()); | |
1250 | ||
1251 | (*function_offsets)[value] = fnsize; | |
1252 | } | |
1253 | } | |
1254 | ||
a9a60db6 ILT |
1255 | // Class Merged_symbol_value. |
1256 | ||
1257 | template<int size> | |
1258 | void | |
1259 | Merged_symbol_value<size>::initialize_input_to_output_map( | |
1260 | const Relobj* object, | |
1261 | unsigned int input_shndx) | |
1262 | { | |
1263 | Object_merge_map* map = object->merge_map(); | |
1264 | map->initialize_input_to_output_map<size>(input_shndx, | |
1265 | this->output_start_address_, | |
1266 | &this->output_addresses_); | |
1267 | } | |
1268 | ||
1269 | // Get the output value corresponding to an input offset if we | |
1270 | // couldn't find it in the hash table. | |
1271 | ||
1272 | template<int size> | |
1273 | typename elfcpp::Elf_types<size>::Elf_Addr | |
1274 | Merged_symbol_value<size>::value_from_output_section( | |
1275 | const Relobj* object, | |
1276 | unsigned int input_shndx, | |
1277 | typename elfcpp::Elf_types<size>::Elf_Addr input_offset) const | |
1278 | { | |
1279 | section_offset_type output_offset; | |
1280 | bool found = object->merge_map()->get_output_offset(NULL, input_shndx, | |
1281 | input_offset, | |
1282 | &output_offset); | |
1283 | ||
1284 | // If this assertion fails, it means that some relocation was | |
1285 | // against a portion of an input merge section which we didn't map | |
1286 | // to the output file and we didn't explicitly discard. We should | |
1287 | // always map all portions of input merge sections. | |
1288 | gold_assert(found); | |
1289 | ||
1290 | if (output_offset == -1) | |
1291 | return 0; | |
1292 | else | |
1293 | return this->output_start_address_ + output_offset; | |
1294 | } | |
1295 | ||
730cdc88 ILT |
1296 | // Track_relocs methods. |
1297 | ||
1298 | // Initialize the class to track the relocs. This gets the object, | |
1299 | // the reloc section index, and the type of the relocs. This returns | |
1300 | // false if something goes wrong. | |
1301 | ||
1302 | template<int size, bool big_endian> | |
1303 | bool | |
1304 | Track_relocs<size, big_endian>::initialize( | |
b696e6d4 | 1305 | Object* object, |
730cdc88 ILT |
1306 | unsigned int reloc_shndx, |
1307 | unsigned int reloc_type) | |
1308 | { | |
730cdc88 ILT |
1309 | // If RELOC_SHNDX is -1U, it means there is more than one reloc |
1310 | // section for the .eh_frame section. We can't handle that case. | |
1311 | if (reloc_shndx == -1U) | |
1312 | return false; | |
1313 | ||
1314 | // If RELOC_SHNDX is 0, there is no reloc section. | |
1315 | if (reloc_shndx == 0) | |
1316 | return true; | |
1317 | ||
1318 | // Get the contents of the reloc section. | |
1319 | this->prelocs_ = object->section_contents(reloc_shndx, &this->len_, false); | |
1320 | ||
1321 | if (reloc_type == elfcpp::SHT_REL) | |
1322 | this->reloc_size_ = elfcpp::Elf_sizes<size>::rel_size; | |
1323 | else if (reloc_type == elfcpp::SHT_RELA) | |
1324 | this->reloc_size_ = elfcpp::Elf_sizes<size>::rela_size; | |
1325 | else | |
1326 | gold_unreachable(); | |
1327 | ||
1328 | if (this->len_ % this->reloc_size_ != 0) | |
1329 | { | |
1330 | object->error(_("reloc section size %zu is not a multiple of " | |
1331 | "reloc size %d\n"), | |
1332 | static_cast<size_t>(this->len_), | |
1333 | this->reloc_size_); | |
1334 | return false; | |
1335 | } | |
1336 | ||
1337 | return true; | |
1338 | } | |
1339 | ||
1340 | // Return the offset of the next reloc, or -1 if there isn't one. | |
1341 | ||
1342 | template<int size, bool big_endian> | |
1343 | off_t | |
1344 | Track_relocs<size, big_endian>::next_offset() const | |
1345 | { | |
1346 | if (this->pos_ >= this->len_) | |
1347 | return -1; | |
1348 | ||
1349 | // Rel and Rela start out the same, so we can always use Rel to find | |
1350 | // the r_offset value. | |
1351 | elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_); | |
1352 | return rel.get_r_offset(); | |
1353 | } | |
1354 | ||
1355 | // Return the index of the symbol referenced by the next reloc, or -1U | |
1356 | // if there aren't any more relocs. | |
1357 | ||
1358 | template<int size, bool big_endian> | |
1359 | unsigned int | |
1360 | Track_relocs<size, big_endian>::next_symndx() const | |
1361 | { | |
1362 | if (this->pos_ >= this->len_) | |
1363 | return -1U; | |
1364 | ||
1365 | // Rel and Rela start out the same, so we can use Rel to find the | |
1366 | // symbol index. | |
1367 | elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_); | |
1368 | return elfcpp::elf_r_sym<size>(rel.get_r_info()); | |
1369 | } | |
1370 | ||
1371 | // Advance to the next reloc whose r_offset is greater than or equal | |
1372 | // to OFFSET. Return the number of relocs we skip. | |
1373 | ||
1374 | template<int size, bool big_endian> | |
1375 | int | |
1376 | Track_relocs<size, big_endian>::advance(off_t offset) | |
1377 | { | |
1378 | int ret = 0; | |
1379 | while (this->pos_ < this->len_) | |
1380 | { | |
1381 | // Rel and Rela start out the same, so we can always use Rel to | |
1382 | // find the r_offset value. | |
1383 | elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_); | |
1384 | if (static_cast<off_t>(rel.get_r_offset()) >= offset) | |
1385 | break; | |
1386 | ++ret; | |
1387 | this->pos_ += this->reloc_size_; | |
1388 | } | |
1389 | return ret; | |
1390 | } | |
1391 | ||
12c0daef | 1392 | // Instantiate the templates we need. |
61ba1cf9 | 1393 | |
193a53d9 | 1394 | #ifdef HAVE_TARGET_32_LITTLE |
92e059d8 ILT |
1395 | template |
1396 | void | |
f6ce93d6 | 1397 | Sized_relobj<32, false>::do_read_relocs(Read_relocs_data* rd); |
193a53d9 | 1398 | #endif |
92e059d8 | 1399 | |
193a53d9 | 1400 | #ifdef HAVE_TARGET_32_BIG |
92e059d8 ILT |
1401 | template |
1402 | void | |
f6ce93d6 | 1403 | Sized_relobj<32, true>::do_read_relocs(Read_relocs_data* rd); |
193a53d9 | 1404 | #endif |
92e059d8 | 1405 | |
193a53d9 | 1406 | #ifdef HAVE_TARGET_64_LITTLE |
92e059d8 ILT |
1407 | template |
1408 | void | |
f6ce93d6 | 1409 | Sized_relobj<64, false>::do_read_relocs(Read_relocs_data* rd); |
193a53d9 | 1410 | #endif |
92e059d8 | 1411 | |
193a53d9 | 1412 | #ifdef HAVE_TARGET_64_BIG |
92e059d8 ILT |
1413 | template |
1414 | void | |
f6ce93d6 | 1415 | Sized_relobj<64, true>::do_read_relocs(Read_relocs_data* rd); |
193a53d9 | 1416 | #endif |
92e059d8 | 1417 | |
6d03d481 ST |
1418 | #ifdef HAVE_TARGET_32_LITTLE |
1419 | template | |
1420 | void | |
ad0f2072 ILT |
1421 | Sized_relobj<32, false>::do_gc_process_relocs(Symbol_table* symtab, |
1422 | Layout* layout, | |
1423 | Read_relocs_data* rd); | |
6d03d481 ST |
1424 | #endif |
1425 | ||
1426 | #ifdef HAVE_TARGET_32_BIG | |
1427 | template | |
1428 | void | |
ad0f2072 ILT |
1429 | Sized_relobj<32, true>::do_gc_process_relocs(Symbol_table* symtab, |
1430 | Layout* layout, | |
1431 | Read_relocs_data* rd); | |
6d03d481 ST |
1432 | #endif |
1433 | ||
1434 | #ifdef HAVE_TARGET_64_LITTLE | |
1435 | template | |
1436 | void | |
ad0f2072 ILT |
1437 | Sized_relobj<64, false>::do_gc_process_relocs(Symbol_table* symtab, |
1438 | Layout* layout, | |
1439 | Read_relocs_data* rd); | |
6d03d481 ST |
1440 | #endif |
1441 | ||
1442 | #ifdef HAVE_TARGET_64_BIG | |
1443 | template | |
1444 | void | |
ad0f2072 ILT |
1445 | Sized_relobj<64, true>::do_gc_process_relocs(Symbol_table* symtab, |
1446 | Layout* layout, | |
1447 | Read_relocs_data* rd); | |
6d03d481 ST |
1448 | #endif |
1449 | ||
193a53d9 | 1450 | #ifdef HAVE_TARGET_32_LITTLE |
92e059d8 ILT |
1451 | template |
1452 | void | |
ad0f2072 | 1453 | Sized_relobj<32, false>::do_scan_relocs(Symbol_table* symtab, |
ead1e424 | 1454 | Layout* layout, |
92e059d8 | 1455 | Read_relocs_data* rd); |
193a53d9 | 1456 | #endif |
92e059d8 | 1457 | |
193a53d9 | 1458 | #ifdef HAVE_TARGET_32_BIG |
92e059d8 ILT |
1459 | template |
1460 | void | |
ad0f2072 | 1461 | Sized_relobj<32, true>::do_scan_relocs(Symbol_table* symtab, |
ead1e424 | 1462 | Layout* layout, |
92e059d8 | 1463 | Read_relocs_data* rd); |
193a53d9 | 1464 | #endif |
92e059d8 | 1465 | |
193a53d9 | 1466 | #ifdef HAVE_TARGET_64_LITTLE |
92e059d8 ILT |
1467 | template |
1468 | void | |
ad0f2072 | 1469 | Sized_relobj<64, false>::do_scan_relocs(Symbol_table* symtab, |
ead1e424 | 1470 | Layout* layout, |
92e059d8 | 1471 | Read_relocs_data* rd); |
193a53d9 | 1472 | #endif |
92e059d8 | 1473 | |
193a53d9 | 1474 | #ifdef HAVE_TARGET_64_BIG |
92e059d8 ILT |
1475 | template |
1476 | void | |
ad0f2072 | 1477 | Sized_relobj<64, true>::do_scan_relocs(Symbol_table* symtab, |
ead1e424 | 1478 | Layout* layout, |
92e059d8 | 1479 | Read_relocs_data* rd); |
193a53d9 | 1480 | #endif |
92e059d8 | 1481 | |
193a53d9 | 1482 | #ifdef HAVE_TARGET_32_LITTLE |
61ba1cf9 ILT |
1483 | template |
1484 | void | |
ad0f2072 | 1485 | Sized_relobj<32, false>::do_relocate(const Symbol_table* symtab, |
92e059d8 | 1486 | const Layout* layout, |
61ba1cf9 | 1487 | Output_file* of); |
193a53d9 | 1488 | #endif |
61ba1cf9 | 1489 | |
193a53d9 | 1490 | #ifdef HAVE_TARGET_32_BIG |
61ba1cf9 ILT |
1491 | template |
1492 | void | |
ad0f2072 | 1493 | Sized_relobj<32, true>::do_relocate(const Symbol_table* symtab, |
92e059d8 | 1494 | const Layout* layout, |
61ba1cf9 | 1495 | Output_file* of); |
193a53d9 | 1496 | #endif |
61ba1cf9 | 1497 | |
193a53d9 | 1498 | #ifdef HAVE_TARGET_64_LITTLE |
61ba1cf9 ILT |
1499 | template |
1500 | void | |
ad0f2072 | 1501 | Sized_relobj<64, false>::do_relocate(const Symbol_table* symtab, |
92e059d8 | 1502 | const Layout* layout, |
61ba1cf9 | 1503 | Output_file* of); |
193a53d9 | 1504 | #endif |
61ba1cf9 | 1505 | |
193a53d9 | 1506 | #ifdef HAVE_TARGET_64_BIG |
61ba1cf9 ILT |
1507 | template |
1508 | void | |
ad0f2072 | 1509 | Sized_relobj<64, true>::do_relocate(const Symbol_table* symtab, |
92e059d8 | 1510 | const Layout* layout, |
61ba1cf9 | 1511 | Output_file* of); |
193a53d9 | 1512 | #endif |
61ba1cf9 | 1513 | |
72adc4fa DK |
1514 | #ifdef HAVE_TARGET_32_LITTLE |
1515 | template | |
1516 | void | |
1517 | Sized_relobj<32, false>::do_relocate_sections( | |
72adc4fa DK |
1518 | const Symbol_table* symtab, |
1519 | const Layout* layout, | |
1520 | const unsigned char* pshdrs, | |
1521 | Views* pviews); | |
1522 | #endif | |
1523 | ||
1524 | #ifdef HAVE_TARGET_32_BIG | |
1525 | template | |
1526 | void | |
1527 | Sized_relobj<32, true>::do_relocate_sections( | |
72adc4fa DK |
1528 | const Symbol_table* symtab, |
1529 | const Layout* layout, | |
1530 | const unsigned char* pshdrs, | |
1531 | Views* pviews); | |
1532 | #endif | |
1533 | ||
1534 | #ifdef HAVE_TARGET_64_LITTLE | |
1535 | template | |
1536 | void | |
1537 | Sized_relobj<64, false>::do_relocate_sections( | |
72adc4fa DK |
1538 | const Symbol_table* symtab, |
1539 | const Layout* layout, | |
1540 | const unsigned char* pshdrs, | |
1541 | Views* pviews); | |
1542 | #endif | |
1543 | ||
1544 | #ifdef HAVE_TARGET_64_BIG | |
1545 | template | |
1546 | void | |
1547 | Sized_relobj<64, true>::do_relocate_sections( | |
72adc4fa DK |
1548 | const Symbol_table* symtab, |
1549 | const Layout* layout, | |
1550 | const unsigned char* pshdrs, | |
1551 | Views* pviews); | |
1552 | #endif | |
1553 | ||
a9a60db6 ILT |
1554 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
1555 | template | |
1556 | class Merged_symbol_value<32>; | |
1557 | #endif | |
1558 | ||
1559 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1560 | template | |
1561 | class Merged_symbol_value<64>; | |
1562 | #endif | |
1563 | ||
1564 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1565 | template | |
1566 | class Symbol_value<32>; | |
1567 | #endif | |
1568 | ||
1569 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1570 | template | |
1571 | class Symbol_value<64>; | |
1572 | #endif | |
1573 | ||
730cdc88 ILT |
1574 | #ifdef HAVE_TARGET_32_LITTLE |
1575 | template | |
1576 | class Track_relocs<32, false>; | |
1577 | #endif | |
1578 | ||
1579 | #ifdef HAVE_TARGET_32_BIG | |
1580 | template | |
1581 | class Track_relocs<32, true>; | |
1582 | #endif | |
1583 | ||
1584 | #ifdef HAVE_TARGET_64_LITTLE | |
1585 | template | |
1586 | class Track_relocs<64, false>; | |
1587 | #endif | |
1588 | ||
1589 | #ifdef HAVE_TARGET_64_BIG | |
1590 | template | |
1591 | class Track_relocs<64, true>; | |
1592 | #endif | |
1593 | ||
61ba1cf9 | 1594 | } // End namespace gold. |