* configure.ac: Add --with-lib-path option. Define LIB_PATH and
[deliverable/binutils-gdb.git] / gold / reloc.cc
CommitLineData
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1// reloc.cc -- relocate input files for gold.
2
b578bd7d 3// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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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
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23#include "gold.h"
24
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25#include <algorithm>
26
61ba1cf9 27#include "workqueue.h"
09ec0418 28#include "layout.h"
5a6f7e2d 29#include "symtab.h"
61ba1cf9 30#include "output.h"
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31#include "merge.h"
32#include "object.h"
7019cd25 33#include "target-reloc.h"
61ba1cf9 34#include "reloc.h"
032ce4e9 35#include "icf.h"
a2e47362 36#include "compressed_output.h"
09ec0418 37#include "incremental.h"
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38
39namespace gold
40{
41
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42// Read_relocs methods.
43
44// These tasks just read the relocation information from the file.
45// After reading it, the start another task to process the
46// information. These tasks requires access to the file.
47
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48Task_token*
49Read_relocs::is_runnable()
92e059d8 50{
17a1d0a9 51 return this->object_->is_locked() ? this->object_->token() : NULL;
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52}
53
54// Lock the file.
55
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56void
57Read_relocs::locks(Task_locker* tl)
92e059d8 58{
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59 Task_token* token = this->object_->token();
60 if (token != NULL)
61 tl->add(this, token);
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62}
63
64// Read the relocations and then start a Scan_relocs_task.
65
66void
67Read_relocs::run(Workqueue* workqueue)
68{
ca09d69a 69 Read_relocs_data* rd = new Read_relocs_data;
92e059d8 70 this->object_->read_relocs(rd);
6d03d481 71 this->object_->set_relocs_data(rd);
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72 this->object_->release();
73
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74 // If garbage collection or identical comdat folding is desired, we
75 // process the relocs first before scanning them. Scanning of relocs is
76 // done only after garbage or identical sections is identified.
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77 if (parameters->options().gc_sections()
78 || parameters->options().icf_enabled())
ef15dade 79 {
ad0f2072 80 workqueue->queue_next(new Gc_process_relocs(this->symtab_,
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81 this->layout_,
82 this->object_, rd,
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83 this->this_blocker_,
84 this->next_blocker_));
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85 }
86 else
87 {
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88 workqueue->queue_next(new Scan_relocs(this->symtab_, this->layout_,
89 this->object_, rd,
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90 this->this_blocker_,
91 this->next_blocker_));
6d03d481 92 }
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93}
94
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95// Return a debugging name for the task.
96
97std::string
98Read_relocs::get_name() const
99{
100 return "Read_relocs " + this->object_->name();
101}
102
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103// Gc_process_relocs methods.
104
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105Gc_process_relocs::~Gc_process_relocs()
106{
107 if (this->this_blocker_ != NULL)
108 delete this->this_blocker_;
109}
110
111// These tasks process the relocations read by Read_relocs and
6d03d481 112// determine which sections are referenced and which are garbage.
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113// This task is done only when --gc-sections is used. This is blocked
114// by THIS_BLOCKER_. It unblocks NEXT_BLOCKER_.
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115
116Task_token*
117Gc_process_relocs::is_runnable()
118{
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119 if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
120 return this->this_blocker_;
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121 if (this->object_->is_locked())
122 return this->object_->token();
123 return NULL;
124}
125
126void
127Gc_process_relocs::locks(Task_locker* tl)
128{
129 tl->add(this, this->object_->token());
93ceb764 130 tl->add(this, this->next_blocker_);
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131}
132
133void
134Gc_process_relocs::run(Workqueue*)
135{
ad0f2072 136 this->object_->gc_process_relocs(this->symtab_, this->layout_, this->rd_);
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137 this->object_->release();
138}
139
140// Return a debugging name for the task.
141
142std::string
143Gc_process_relocs::get_name() const
144{
145 return "Gc_process_relocs " + this->object_->name();
146}
147
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148// Scan_relocs methods.
149
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150Scan_relocs::~Scan_relocs()
151{
152 if (this->this_blocker_ != NULL)
153 delete this->this_blocker_;
154}
155
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156// These tasks scan the relocations read by Read_relocs and mark up
157// the symbol table to indicate which relocations are required. We
158// use a lock on the symbol table to keep them from interfering with
159// each other.
160
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161Task_token*
162Scan_relocs::is_runnable()
92e059d8 163{
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164 if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
165 return this->this_blocker_;
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166 if (this->object_->is_locked())
167 return this->object_->token();
168 return NULL;
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169}
170
171// Return the locks we hold: one on the file, one on the symbol table
172// and one blocker.
173
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174void
175Scan_relocs::locks(Task_locker* tl)
92e059d8 176{
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177 Task_token* token = this->object_->token();
178 if (token != NULL)
179 tl->add(this, token);
93ceb764 180 tl->add(this, this->next_blocker_);
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181}
182
183// Scan the relocs.
184
185void
186Scan_relocs::run(Workqueue*)
187{
ad0f2072 188 this->object_->scan_relocs(this->symtab_, this->layout_, this->rd_);
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189 delete this->rd_;
190 this->rd_ = NULL;
a2a5469e 191 this->object_->release();
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192}
193
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194// Return a debugging name for the task.
195
196std::string
197Scan_relocs::get_name() const
198{
199 return "Scan_relocs " + this->object_->name();
200}
201
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202// Relocate_task methods.
203
730cdc88 204// We may have to wait for the output sections to be written.
61ba1cf9 205
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206Task_token*
207Relocate_task::is_runnable()
61ba1cf9 208{
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209 if (this->object_->relocs_must_follow_section_writes()
210 && this->output_sections_blocker_->is_blocked())
17a1d0a9 211 return this->output_sections_blocker_;
730cdc88 212
c7912668 213 if (this->object_->is_locked())
17a1d0a9 214 return this->object_->token();
c7912668 215
17a1d0a9 216 return NULL;
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217}
218
219// We want to lock the file while we run. We want to unblock
730cdc88 220// INPUT_SECTIONS_BLOCKER and FINAL_BLOCKER when we are done.
17a1d0a9 221// INPUT_SECTIONS_BLOCKER may be NULL.
61ba1cf9 222
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223void
224Relocate_task::locks(Task_locker* tl)
61ba1cf9 225{
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226 if (this->input_sections_blocker_ != NULL)
227 tl->add(this, this->input_sections_blocker_);
228 tl->add(this, this->final_blocker_);
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229 Task_token* token = this->object_->token();
230 if (token != NULL)
231 tl->add(this, token);
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232}
233
234// Run the task.
235
236void
237Relocate_task::run(Workqueue*)
238{
ad0f2072 239 this->object_->relocate(this->symtab_, this->layout_, this->of_);
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240
241 // This is normally the last thing we will do with an object, so
242 // uncache all views.
243 this->object_->clear_view_cache_marks();
244
17a1d0a9 245 this->object_->release();
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246}
247
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248// Return a debugging name for the task.
249
250std::string
251Relocate_task::get_name() const
252{
253 return "Relocate_task " + this->object_->name();
254}
255
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256// Read the relocs and local symbols from the object file and store
257// the information in RD.
258
259template<int size, bool big_endian>
260void
6fa2a40b 261Sized_relobj_file<size, big_endian>::do_read_relocs(Read_relocs_data* rd)
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262{
263 rd->relocs.clear();
264
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265 unsigned int shnum = this->shnum();
266 if (shnum == 0)
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267 return;
268
2ea97941 269 rd->relocs.reserve(shnum / 2);
92e059d8 270
ef9beddf 271 const Output_sections& out_sections(this->output_sections());
6fa2a40b 272 const std::vector<Address>& out_offsets(this->section_offsets());
730cdc88 273
ca09d69a 274 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
2ea97941 275 shnum * This::shdr_size,
39d0cb0e 276 true, true);
92e059d8 277 // Skip the first, dummy, section.
ca09d69a 278 const unsigned char* ps = pshdrs + This::shdr_size;
2ea97941 279 for (unsigned int i = 1; i < shnum; ++i, ps += This::shdr_size)
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280 {
281 typename This::Shdr shdr(ps);
282
283 unsigned int sh_type = shdr.get_sh_type();
284 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
285 continue;
286
d491d34e 287 unsigned int shndx = this->adjust_shndx(shdr.get_sh_info());
2ea97941 288 if (shndx >= shnum)
92e059d8 289 {
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290 this->error(_("relocation section %u has bad info %u"),
291 i, shndx);
292 continue;
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293 }
294
ef9beddf 295 Output_section* os = out_sections[shndx];
730cdc88 296 if (os == NULL)
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297 continue;
298
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299 // We are scanning relocations in order to fill out the GOT and
300 // PLT sections. Relocations for sections which are not
301 // allocated (typically debugging sections) should not add new
6a74a719 302 // GOT and PLT entries. So we skip them unless this is a
031cdbed
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303 // relocatable link or we need to emit relocations. FIXME: What
304 // should we do if a linker script maps a section with SHF_ALLOC
305 // clear to a section with SHF_ALLOC set?
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306 typename This::Shdr secshdr(pshdrs + shndx * This::shdr_size);
307 bool is_section_allocated = ((secshdr.get_sh_flags() & elfcpp::SHF_ALLOC)
308 != 0);
309 if (!is_section_allocated
8851ecca 310 && !parameters->options().relocatable()
09ec0418 311 && !parameters->options().emit_relocs()
8c21d9d3 312 && !parameters->incremental())
7019cd25 313 continue;
ead1e424 314
d491d34e 315 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
92e059d8 316 {
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317 this->error(_("relocation section %u uses unexpected "
318 "symbol table %u"),
d491d34e 319 i, this->adjust_shndx(shdr.get_sh_link()));
75f2446e 320 continue;
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321 }
322
323 off_t sh_size = shdr.get_sh_size();
324
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325 if (sh_size == 0)
326 continue;
327
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328 unsigned int reloc_size;
329 if (sh_type == elfcpp::SHT_REL)
330 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
331 else
332 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
333 if (reloc_size != shdr.get_sh_entsize())
334 {
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335 this->error(_("unexpected entsize for reloc section %u: %lu != %u"),
336 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
337 reloc_size);
338 continue;
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339 }
340
341 size_t reloc_count = sh_size / reloc_size;
f5c3f225 342 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
92e059d8 343 {
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344 this->error(_("reloc section %u size %lu uneven"),
345 i, static_cast<unsigned long>(sh_size));
346 continue;
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347 }
348
349 rd->relocs.push_back(Section_relocs());
350 Section_relocs& sr(rd->relocs.back());
351 sr.reloc_shndx = i;
352 sr.data_shndx = shndx;
9eb9fa57 353 sr.contents = this->get_lasting_view(shdr.get_sh_offset(), sh_size,
39d0cb0e 354 true, true);
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355 sr.sh_type = sh_type;
356 sr.reloc_count = reloc_count;
730cdc88 357 sr.output_section = os;
a45248e0 358 sr.needs_special_offset_handling = out_offsets[shndx] == invalid_address;
7019cd25 359 sr.is_data_section_allocated = is_section_allocated;
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360 }
361
362 // Read the local symbols.
a3ad94ed 363 gold_assert(this->symtab_shndx_ != -1U);
645f8123 364 if (this->symtab_shndx_ == 0 || this->local_symbol_count_ == 0)
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365 rd->local_symbols = NULL;
366 else
367 {
368 typename This::Shdr symtabshdr(pshdrs
645f8123 369 + this->symtab_shndx_ * This::shdr_size);
a3ad94ed 370 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
2ea97941 371 const int sym_size = This::sym_size;
92e059d8 372 const unsigned int loccount = this->local_symbol_count_;
a3ad94ed 373 gold_assert(loccount == symtabshdr.get_sh_info());
2ea97941 374 off_t locsize = loccount * sym_size;
92e059d8 375 rd->local_symbols = this->get_lasting_view(symtabshdr.get_sh_offset(),
39d0cb0e 376 locsize, true, true);
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377 }
378}
379
6d03d481 380// Process the relocs to generate mappings from source sections to referenced
9b547ce6 381// sections. This is used during garbage collection to determine garbage
6d03d481
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382// sections.
383
384template<int size, bool big_endian>
385void
6fa2a40b
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386Sized_relobj_file<size, big_endian>::do_gc_process_relocs(Symbol_table* symtab,
387 Layout* layout,
388 Read_relocs_data* rd)
6d03d481 389{
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390 Sized_target<size, big_endian>* target =
391 parameters->sized_target<size, big_endian>();
6d03d481
ST
392
393 const unsigned char* local_symbols;
394 if (rd->local_symbols == NULL)
395 local_symbols = NULL;
396 else
397 local_symbols = rd->local_symbols->data();
398
399 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
400 p != rd->relocs.end();
401 ++p)
402 {
403 if (!parameters->options().relocatable())
404 {
405 // As noted above, when not generating an object file, we
406 // only scan allocated sections. We may see a non-allocated
407 // section here if we are emitting relocs.
408 if (p->is_data_section_allocated)
2ea97941 409 target->gc_process_relocs(symtab, layout, this,
6d03d481
ST
410 p->data_shndx, p->sh_type,
411 p->contents->data(), p->reloc_count,
412 p->output_section,
413 p->needs_special_offset_handling,
414 this->local_symbol_count_,
415 local_symbols);
416 }
417 }
418}
419
420
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421// Scan the relocs and adjust the symbol table. This looks for
422// relocations which require GOT/PLT/COPY relocations.
423
424template<int size, bool big_endian>
425void
6fa2a40b 426Sized_relobj_file<size, big_endian>::do_scan_relocs(Symbol_table* symtab,
2ea97941 427 Layout* layout,
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428 Read_relocs_data* rd)
429{
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430 Sized_target<size, big_endian>* target =
431 parameters->sized_target<size, big_endian>();
92e059d8
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432
433 const unsigned char* local_symbols;
434 if (rd->local_symbols == NULL)
435 local_symbols = NULL;
436 else
437 local_symbols = rd->local_symbols->data();
438
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439 // For incremental links, allocate the counters for incremental relocations.
440 if (layout->incremental_inputs() != NULL)
441 this->allocate_incremental_reloc_counts();
442
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443 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
444 p != rd->relocs.end();
445 ++p)
446 {
6d03d481
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447 // When garbage collection is on, unreferenced sections are not included
448 // in the link that would have been included normally. This is known only
449 // after Read_relocs hence this check has to be done again.
032ce4e9
ST
450 if (parameters->options().gc_sections()
451 || parameters->options().icf_enabled())
6d03d481
ST
452 {
453 if (p->output_section == NULL)
454 continue;
455 }
8851ecca 456 if (!parameters->options().relocatable())
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457 {
458 // As noted above, when not generating an object file, we
459 // only scan allocated sections. We may see a non-allocated
460 // section here if we are emitting relocs.
461 if (p->is_data_section_allocated)
2ea97941 462 target->scan_relocs(symtab, layout, this, p->data_shndx,
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463 p->sh_type, p->contents->data(),
464 p->reloc_count, p->output_section,
465 p->needs_special_offset_handling,
466 this->local_symbol_count_,
467 local_symbols);
8851ecca 468 if (parameters->options().emit_relocs())
2ea97941 469 this->emit_relocs_scan(symtab, layout, local_symbols, p);
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CC
470 if (layout->incremental_inputs() != NULL)
471 this->incremental_relocs_scan(p);
7019cd25 472 }
6a74a719
ILT
473 else
474 {
475 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
476 gold_assert(rr != NULL);
477 rr->set_reloc_count(p->reloc_count);
2ea97941 478 target->scan_relocatable_relocs(symtab, layout, this,
6a74a719
ILT
479 p->data_shndx, p->sh_type,
480 p->contents->data(),
481 p->reloc_count,
482 p->output_section,
483 p->needs_special_offset_handling,
484 this->local_symbol_count_,
485 local_symbols,
486 rr);
487 }
488
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489 delete p->contents;
490 p->contents = NULL;
491 }
492
09ec0418
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493 // For incremental links, finalize the allocation of relocations.
494 if (layout->incremental_inputs() != NULL)
cdc29364 495 this->finalize_incremental_relocs(layout, true);
09ec0418 496
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497 if (rd->local_symbols != NULL)
498 {
499 delete rd->local_symbols;
500 rd->local_symbols = NULL;
501 }
502}
503
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504// This is a strategy class we use when scanning for --emit-relocs.
505
506template<int sh_type>
507class Emit_relocs_strategy
508{
509 public:
510 // A local non-section symbol.
511 inline Relocatable_relocs::Reloc_strategy
68943102 512 local_non_section_strategy(unsigned int, Relobj*, unsigned int)
7019cd25
ILT
513 { return Relocatable_relocs::RELOC_COPY; }
514
515 // A local section symbol.
516 inline Relocatable_relocs::Reloc_strategy
517 local_section_strategy(unsigned int, Relobj*)
518 {
519 if (sh_type == elfcpp::SHT_RELA)
520 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
521 else
522 {
523 // The addend is stored in the section contents. Since this
524 // is not a relocatable link, we are going to apply the
525 // relocation contents to the section as usual. This means
526 // that we have no way to record the original addend. If the
527 // original addend is not zero, there is basically no way for
528 // the user to handle this correctly. Caveat emptor.
529 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0;
530 }
531 }
532
533 // A global symbol.
534 inline Relocatable_relocs::Reloc_strategy
535 global_strategy(unsigned int, Relobj*, unsigned int)
536 { return Relocatable_relocs::RELOC_COPY; }
537};
538
539// Scan the input relocations for --emit-relocs.
540
541template<int size, bool big_endian>
542void
6fa2a40b 543Sized_relobj_file<size, big_endian>::emit_relocs_scan(
7019cd25 544 Symbol_table* symtab,
2ea97941 545 Layout* layout,
7019cd25
ILT
546 const unsigned char* plocal_syms,
547 const Read_relocs_data::Relocs_list::iterator& p)
548{
549 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
550 gold_assert(rr != NULL);
551 rr->set_reloc_count(p->reloc_count);
552
553 if (p->sh_type == elfcpp::SHT_REL)
2ea97941 554 this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(symtab, layout,
7019cd25
ILT
555 plocal_syms, p, rr);
556 else
557 {
558 gold_assert(p->sh_type == elfcpp::SHT_RELA);
2ea97941 559 this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(symtab, layout,
ad0f2072 560 plocal_syms, p, rr);
7019cd25
ILT
561 }
562}
563
564// Scan the input relocation for --emit-relocs, templatized on the
565// type of the relocation section.
566
567template<int size, bool big_endian>
568template<int sh_type>
569void
6fa2a40b 570Sized_relobj_file<size, big_endian>::emit_relocs_scan_reltype(
7019cd25 571 Symbol_table* symtab,
2ea97941 572 Layout* layout,
7019cd25
ILT
573 const unsigned char* plocal_syms,
574 const Read_relocs_data::Relocs_list::iterator& p,
575 Relocatable_relocs* rr)
576{
577 scan_relocatable_relocs<size, big_endian, sh_type,
578 Emit_relocs_strategy<sh_type> >(
7019cd25 579 symtab,
2ea97941 580 layout,
7019cd25
ILT
581 this,
582 p->data_shndx,
583 p->contents->data(),
584 p->reloc_count,
585 p->output_section,
586 p->needs_special_offset_handling,
587 this->local_symbol_count_,
588 plocal_syms,
589 rr);
590}
591
09ec0418
CC
592// Scan the input relocations for --incremental.
593
594template<int size, bool big_endian>
595void
6fa2a40b 596Sized_relobj_file<size, big_endian>::incremental_relocs_scan(
09ec0418
CC
597 const Read_relocs_data::Relocs_list::iterator& p)
598{
599 if (p->sh_type == elfcpp::SHT_REL)
600 this->incremental_relocs_scan_reltype<elfcpp::SHT_REL>(p);
601 else
602 {
603 gold_assert(p->sh_type == elfcpp::SHT_RELA);
604 this->incremental_relocs_scan_reltype<elfcpp::SHT_RELA>(p);
605 }
606}
607
cdc29364 608// Scan the input relocation for --incremental, templatized on the
09ec0418
CC
609// type of the relocation section.
610
611template<int size, bool big_endian>
612template<int sh_type>
613void
6fa2a40b 614Sized_relobj_file<size, big_endian>::incremental_relocs_scan_reltype(
09ec0418
CC
615 const Read_relocs_data::Relocs_list::iterator& p)
616{
617 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
618 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
619 const unsigned char* prelocs = p->contents->data();
620 size_t reloc_count = p->reloc_count;
621
622 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
623 {
624 Reltype reloc(prelocs);
625
626 if (p->needs_special_offset_handling
627 && !p->output_section->is_input_address_mapped(this, p->data_shndx,
628 reloc.get_r_offset()))
629 continue;
630
631 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
632 reloc.get_r_info();
633 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
634
635 if (r_sym >= this->local_symbol_count_)
636 this->count_incremental_reloc(r_sym - this->local_symbol_count_);
637 }
638}
639
61ba1cf9
ILT
640// Relocate the input sections and write out the local symbols.
641
642template<int size, bool big_endian>
643void
6fa2a40b
CC
644Sized_relobj_file<size, big_endian>::do_relocate(const Symbol_table* symtab,
645 const Layout* layout,
646 Output_file* of)
61ba1cf9 647{
2ea97941 648 unsigned int shnum = this->shnum();
61ba1cf9
ILT
649
650 // Read the section headers.
645f8123 651 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
2ea97941 652 shnum * This::shdr_size,
39d0cb0e 653 true, true);
61ba1cf9
ILT
654
655 Views views;
2ea97941 656 views.resize(shnum);
61ba1cf9
ILT
657
658 // Make two passes over the sections. The first one copies the
659 // section data to the output file. The second one applies
660 // relocations.
661
487b39df 662 this->write_sections(layout, pshdrs, of, &views);
61ba1cf9 663
a9a60db6
ILT
664 // To speed up relocations, we set up hash tables for fast lookup of
665 // input offsets to output addresses.
666 this->initialize_input_to_output_maps();
667
61ba1cf9
ILT
668 // Apply relocations.
669
09ec0418 670 this->relocate_sections(symtab, layout, pshdrs, of, &views);
61ba1cf9 671
a9a60db6
ILT
672 // After we've done the relocations, we release the hash tables,
673 // since we no longer need them.
674 this->free_input_to_output_maps();
675
61ba1cf9 676 // Write out the accumulated views.
2ea97941 677 for (unsigned int i = 1; i < shnum; ++i)
61ba1cf9
ILT
678 {
679 if (views[i].view != NULL)
730cdc88 680 {
487b39df
ILT
681 if (views[i].is_ctors_reverse_view)
682 this->reverse_words(views[i].view, views[i].view_size);
96803768
ILT
683 if (!views[i].is_postprocessing_view)
684 {
685 if (views[i].is_input_output_view)
686 of->write_input_output_view(views[i].offset,
687 views[i].view_size,
688 views[i].view);
689 else
690 of->write_output_view(views[i].offset, views[i].view_size,
691 views[i].view);
692 }
730cdc88 693 }
61ba1cf9
ILT
694 }
695
696 // Write out the local symbols.
2ea97941 697 this->write_local_symbols(of, layout->sympool(), layout->dynpool(),
cdc29364 698 layout->symtab_xindex(), layout->dynsym_xindex(),
bec5b579 699 layout->symtab_section_offset());
61ba1cf9
ILT
700}
701
cb295612
ILT
702// Sort a Read_multiple vector by file offset.
703struct Read_multiple_compare
704{
705 inline bool
706 operator()(const File_read::Read_multiple_entry& rme1,
707 const File_read::Read_multiple_entry& rme2) const
708 { return rme1.file_offset < rme2.file_offset; }
709};
710
61ba1cf9
ILT
711// Write section data to the output file. PSHDRS points to the
712// section headers. Record the views in *PVIEWS for use when
713// relocating.
714
715template<int size, bool big_endian>
716void
487b39df
ILT
717Sized_relobj_file<size, big_endian>::write_sections(const Layout* layout,
718 const unsigned char* pshdrs,
6fa2a40b
CC
719 Output_file* of,
720 Views* pviews)
61ba1cf9 721{
2ea97941 722 unsigned int shnum = this->shnum();
ef9beddf 723 const Output_sections& out_sections(this->output_sections());
6fa2a40b 724 const std::vector<Address>& out_offsets(this->section_offsets());
61ba1cf9 725
cb295612
ILT
726 File_read::Read_multiple rm;
727 bool is_sorted = true;
728
61ba1cf9 729 const unsigned char* p = pshdrs + This::shdr_size;
2ea97941 730 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
61ba1cf9
ILT
731 {
732 View_size* pvs = &(*pviews)[i];
733
734 pvs->view = NULL;
735
ef9beddf 736 const Output_section* os = out_sections[i];
61ba1cf9
ILT
737 if (os == NULL)
738 continue;
ef9beddf 739 Address output_offset = out_offsets[i];
61ba1cf9
ILT
740
741 typename This::Shdr shdr(p);
742
743 if (shdr.get_sh_type() == elfcpp::SHT_NOBITS)
744 continue;
745
8851ecca
ILT
746 if ((parameters->options().relocatable()
747 || parameters->options().emit_relocs())
6a74a719
ILT
748 && (shdr.get_sh_type() == elfcpp::SHT_REL
749 || shdr.get_sh_type() == elfcpp::SHT_RELA)
750 && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0)
751 {
7019cd25
ILT
752 // This is a reloc section in a relocatable link or when
753 // emitting relocs. We don't need to read the input file.
754 // The size and file offset are stored in the
755 // Relocatable_relocs structure.
6a74a719
ILT
756 Relocatable_relocs* rr = this->relocatable_relocs(i);
757 gold_assert(rr != NULL);
758 Output_data* posd = rr->output_data();
759 gold_assert(posd != NULL);
760
761 pvs->offset = posd->offset();
762 pvs->view_size = posd->data_size();
763 pvs->view = of->get_output_view(pvs->offset, pvs->view_size);
764 pvs->address = posd->address();
765 pvs->is_input_output_view = false;
766 pvs->is_postprocessing_view = false;
487b39df 767 pvs->is_ctors_reverse_view = false;
6a74a719
ILT
768
769 continue;
770 }
771
96803768
ILT
772 // In the normal case, this input section is simply mapped to
773 // the output section at offset OUTPUT_OFFSET.
774
eff45813
CC
775 // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is
776 // handled specially--e.g., a .eh_frame section. The relocation
96803768
ILT
777 // routines need to check for each reloc where it should be
778 // applied. For this case, we need an input/output view for the
779 // entire contents of the section in the output file. We don't
780 // want to copy the contents of the input section to the output
781 // section; the output section contents were already written,
782 // and we waited for them in Relocate_task::is_runnable because
783 // relocs_must_follow_section_writes is set for the object.
784
785 // Regardless of which of the above cases is true, we have to
786 // check requires_postprocessing of the output section. If that
787 // is false, then we work with views of the output file
788 // directly. If it is true, then we work with a separate
789 // buffer, and the output section is responsible for writing the
790 // final data to the output file.
791
2ea97941 792 off_t output_section_offset;
ef9beddf 793 Address output_section_size;
96803768
ILT
794 if (!os->requires_postprocessing())
795 {
2ea97941 796 output_section_offset = os->offset();
ef9beddf 797 output_section_size = convert_types<Address, off_t>(os->data_size());
96803768
ILT
798 }
799 else
800 {
2ea97941 801 output_section_offset = 0;
ef9beddf
ILT
802 output_section_size =
803 convert_types<Address, off_t>(os->postprocessing_buffer_size());
96803768
ILT
804 }
805
730cdc88 806 off_t view_start;
fe8718a4 807 section_size_type view_size;
a2e47362 808 bool must_decompress = false;
eff45813 809 if (output_offset != invalid_address)
730cdc88 810 {
2ea97941 811 view_start = output_section_offset + output_offset;
fe8718a4 812 view_size = convert_to_section_size_type(shdr.get_sh_size());
a2e47362
CC
813 section_size_type uncompressed_size;
814 if (this->section_is_compressed(i, &uncompressed_size))
815 {
816 view_size = uncompressed_size;
817 must_decompress = true;
818 }
730cdc88
ILT
819 }
820 else
821 {
2ea97941 822 view_start = output_section_offset;
fe8718a4 823 view_size = convert_to_section_size_type(output_section_size);
730cdc88 824 }
61ba1cf9 825
730cdc88 826 if (view_size == 0)
ead1e424
ILT
827 continue;
828
eff45813 829 gold_assert(output_offset == invalid_address
ef9beddf 830 || output_offset + view_size <= output_section_size);
ead1e424 831
2ea97941 832 unsigned char* view;
96803768
ILT
833 if (os->requires_postprocessing())
834 {
835 unsigned char* buffer = os->postprocessing_buffer();
2ea97941 836 view = buffer + view_start;
a2e47362 837 if (output_offset != invalid_address && !must_decompress)
cb295612
ILT
838 {
839 off_t sh_offset = shdr.get_sh_offset();
840 if (!rm.empty() && rm.back().file_offset > sh_offset)
841 is_sorted = false;
842 rm.push_back(File_read::Read_multiple_entry(sh_offset,
2ea97941 843 view_size, view));
cb295612 844 }
96803768 845 }
730cdc88
ILT
846 else
847 {
eff45813 848 if (output_offset == invalid_address)
2ea97941 849 view = of->get_input_output_view(view_start, view_size);
96803768
ILT
850 else
851 {
2ea97941 852 view = of->get_output_view(view_start, view_size);
a2e47362
CC
853 if (!must_decompress)
854 {
855 off_t sh_offset = shdr.get_sh_offset();
856 if (!rm.empty() && rm.back().file_offset > sh_offset)
857 is_sorted = false;
858 rm.push_back(File_read::Read_multiple_entry(sh_offset,
859 view_size, view));
860 }
96803768 861 }
730cdc88 862 }
92e059d8 863
a2e47362
CC
864 if (must_decompress)
865 {
866 // Read and decompress the section.
867 section_size_type len;
868 const unsigned char* p = this->section_contents(i, &len, false);
869 if (!decompress_input_section(p, len, view, view_size))
870 this->error(_("could not decompress section %s"),
871 this->section_name(i).c_str());
872 }
873
2ea97941 874 pvs->view = view;
730cdc88 875 pvs->address = os->address();
eff45813 876 if (output_offset != invalid_address)
730cdc88
ILT
877 pvs->address += output_offset;
878 pvs->offset = view_start;
879 pvs->view_size = view_size;
eff45813 880 pvs->is_input_output_view = output_offset == invalid_address;
96803768 881 pvs->is_postprocessing_view = os->requires_postprocessing();
487b39df
ILT
882 pvs->is_ctors_reverse_view =
883 (!parameters->options().relocatable()
884 && view_size > size / 8
885 && (strcmp(os->name(), ".init_array") == 0
886 || strcmp(os->name(), ".fini_array") == 0)
887 && layout->is_ctors_in_init_array(this, i));
61ba1cf9 888 }
cb295612
ILT
889
890 // Actually read the data.
891 if (!rm.empty())
892 {
893 if (!is_sorted)
894 std::sort(rm.begin(), rm.end(), Read_multiple_compare());
895 this->read_multiple(rm);
896 }
61ba1cf9
ILT
897}
898
899// Relocate section data. VIEWS points to the section data as views
900// in the output file.
901
902template<int size, bool big_endian>
903void
6fa2a40b 904Sized_relobj_file<size, big_endian>::do_relocate_sections(
92e059d8 905 const Symbol_table* symtab,
2ea97941 906 const Layout* layout,
92e059d8 907 const unsigned char* pshdrs,
09ec0418 908 Output_file* of,
92e059d8 909 Views* pviews)
61ba1cf9 910{
2ea97941 911 unsigned int shnum = this->shnum();
029ba973
ILT
912 Sized_target<size, big_endian>* target =
913 parameters->sized_target<size, big_endian>();
61ba1cf9 914
ef9beddf 915 const Output_sections& out_sections(this->output_sections());
6fa2a40b 916 const std::vector<Address>& out_offsets(this->section_offsets());
730cdc88 917
92e059d8 918 Relocate_info<size, big_endian> relinfo;
92e059d8 919 relinfo.symtab = symtab;
2ea97941 920 relinfo.layout = layout;
92e059d8 921 relinfo.object = this;
92e059d8 922
61ba1cf9 923 const unsigned char* p = pshdrs + This::shdr_size;
2ea97941 924 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
61ba1cf9
ILT
925 {
926 typename This::Shdr shdr(p);
927
928 unsigned int sh_type = shdr.get_sh_type();
929 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
930 continue;
931
1307d6cd
ILT
932 off_t sh_size = shdr.get_sh_size();
933 if (sh_size == 0)
934 continue;
935
d491d34e 936 unsigned int index = this->adjust_shndx(shdr.get_sh_info());
61ba1cf9
ILT
937 if (index >= this->shnum())
938 {
75f2446e
ILT
939 this->error(_("relocation section %u has bad info %u"),
940 i, index);
941 continue;
61ba1cf9
ILT
942 }
943
ef9beddf 944 Output_section* os = out_sections[index];
730cdc88 945 if (os == NULL)
61ba1cf9
ILT
946 {
947 // This relocation section is against a section which we
948 // discarded.
949 continue;
950 }
ef9beddf 951 Address output_offset = out_offsets[index];
61ba1cf9 952
a3ad94ed 953 gold_assert((*pviews)[index].view != NULL);
8851ecca 954 if (parameters->options().relocatable())
6a74a719 955 gold_assert((*pviews)[i].view != NULL);
61ba1cf9 956
d491d34e 957 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
61ba1cf9 958 {
75f2446e
ILT
959 gold_error(_("relocation section %u uses unexpected "
960 "symbol table %u"),
d491d34e 961 i, this->adjust_shndx(shdr.get_sh_link()));
75f2446e 962 continue;
61ba1cf9
ILT
963 }
964
61ba1cf9 965 const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(),
39d0cb0e 966 sh_size, true, false);
61ba1cf9
ILT
967
968 unsigned int reloc_size;
969 if (sh_type == elfcpp::SHT_REL)
970 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
971 else
972 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
973
974 if (reloc_size != shdr.get_sh_entsize())
975 {
75f2446e
ILT
976 gold_error(_("unexpected entsize for reloc section %u: %lu != %u"),
977 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
730cdc88 978 reloc_size);
75f2446e 979 continue;
61ba1cf9
ILT
980 }
981
982 size_t reloc_count = sh_size / reloc_size;
f5c3f225 983 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
61ba1cf9 984 {
75f2446e
ILT
985 gold_error(_("reloc section %u size %lu uneven"),
986 i, static_cast<unsigned long>(sh_size));
987 continue;
61ba1cf9
ILT
988 }
989
eff45813 990 gold_assert(output_offset != invalid_address
96803768
ILT
991 || this->relocs_must_follow_section_writes());
992
92e059d8 993 relinfo.reloc_shndx = i;
82bb573a 994 relinfo.reloc_shdr = p;
92e059d8 995 relinfo.data_shndx = index;
82bb573a 996 relinfo.data_shdr = pshdrs + index * This::shdr_size;
2ea97941 997 unsigned char* view = (*pviews)[index].view;
364c7fa5
ILT
998 Address address = (*pviews)[index].address;
999 section_size_type view_size = (*pviews)[index].view_size;
1000
1001 Reloc_symbol_changes* reloc_map = NULL;
1002 if (this->uses_split_stack() && output_offset != invalid_address)
1003 {
1004 typename This::Shdr data_shdr(pshdrs + index * This::shdr_size);
1005 if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0)
1006 this->split_stack_adjust(symtab, pshdrs, sh_type, index,
2ea97941 1007 prelocs, reloc_count, view, view_size,
364c7fa5
ILT
1008 &reloc_map);
1009 }
1010
8851ecca 1011 if (!parameters->options().relocatable())
7019cd25 1012 {
364c7fa5 1013 target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os,
eff45813 1014 output_offset == invalid_address,
2ea97941 1015 view, address, view_size, reloc_map);
8851ecca 1016 if (parameters->options().emit_relocs())
7019cd25 1017 this->emit_relocs(&relinfo, i, sh_type, prelocs, reloc_count,
2ea97941 1018 os, output_offset, view, address, view_size,
364c7fa5 1019 (*pviews)[i].view, (*pviews)[i].view_size);
8c21d9d3 1020 if (parameters->incremental())
09ec0418
CC
1021 this->incremental_relocs_write(&relinfo, sh_type, prelocs,
1022 reloc_count, os, output_offset, of);
7019cd25 1023 }
6a74a719
ILT
1024 else
1025 {
1026 Relocatable_relocs* rr = this->relocatable_relocs(i);
364c7fa5
ILT
1027 target->relocate_for_relocatable(&relinfo, sh_type, prelocs,
1028 reloc_count, os, output_offset, rr,
2ea97941 1029 view, address, view_size,
6a74a719
ILT
1030 (*pviews)[i].view,
1031 (*pviews)[i].view_size);
1032 }
61ba1cf9
ILT
1033 }
1034}
1035
7019cd25
ILT
1036// Emit the relocs for --emit-relocs.
1037
1038template<int size, bool big_endian>
1039void
6fa2a40b 1040Sized_relobj_file<size, big_endian>::emit_relocs(
7019cd25
ILT
1041 const Relocate_info<size, big_endian>* relinfo,
1042 unsigned int i,
1043 unsigned int sh_type,
1044 const unsigned char* prelocs,
1045 size_t reloc_count,
2ea97941 1046 Output_section* output_section,
ef9beddf 1047 typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section,
2ea97941 1048 unsigned char* view,
7019cd25
ILT
1049 typename elfcpp::Elf_types<size>::Elf_Addr address,
1050 section_size_type view_size,
1051 unsigned char* reloc_view,
1052 section_size_type reloc_view_size)
1053{
1054 if (sh_type == elfcpp::SHT_REL)
1055 this->emit_relocs_reltype<elfcpp::SHT_REL>(relinfo, i, prelocs,
2ea97941 1056 reloc_count, output_section,
7019cd25 1057 offset_in_output_section,
2ea97941 1058 view, address, view_size,
7019cd25
ILT
1059 reloc_view, reloc_view_size);
1060 else
1061 {
1062 gold_assert(sh_type == elfcpp::SHT_RELA);
1063 this->emit_relocs_reltype<elfcpp::SHT_RELA>(relinfo, i, prelocs,
2ea97941 1064 reloc_count, output_section,
7019cd25 1065 offset_in_output_section,
2ea97941 1066 view, address, view_size,
7019cd25
ILT
1067 reloc_view, reloc_view_size);
1068 }
1069}
1070
1071// Emit the relocs for --emit-relocs, templatized on the type of the
1072// relocation section.
1073
1074template<int size, bool big_endian>
1075template<int sh_type>
1076void
6fa2a40b 1077Sized_relobj_file<size, big_endian>::emit_relocs_reltype(
7019cd25
ILT
1078 const Relocate_info<size, big_endian>* relinfo,
1079 unsigned int i,
1080 const unsigned char* prelocs,
1081 size_t reloc_count,
2ea97941 1082 Output_section* output_section,
ef9beddf 1083 typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section,
2ea97941 1084 unsigned char* view,
7019cd25
ILT
1085 typename elfcpp::Elf_types<size>::Elf_Addr address,
1086 section_size_type view_size,
1087 unsigned char* reloc_view,
1088 section_size_type reloc_view_size)
1089{
1090 const Relocatable_relocs* rr = this->relocatable_relocs(i);
1091 relocate_for_relocatable<size, big_endian, sh_type>(
1092 relinfo,
1093 prelocs,
1094 reloc_count,
2ea97941 1095 output_section,
7019cd25
ILT
1096 offset_in_output_section,
1097 rr,
2ea97941 1098 view,
7019cd25
ILT
1099 address,
1100 view_size,
1101 reloc_view,
1102 reloc_view_size);
1103}
1104
09ec0418
CC
1105// Write the incremental relocs.
1106
1107template<int size, bool big_endian>
1108void
6fa2a40b 1109Sized_relobj_file<size, big_endian>::incremental_relocs_write(
09ec0418
CC
1110 const Relocate_info<size, big_endian>* relinfo,
1111 unsigned int sh_type,
1112 const unsigned char* prelocs,
1113 size_t reloc_count,
1114 Output_section* output_section,
1115 Address output_offset,
1116 Output_file* of)
1117{
1118 if (sh_type == elfcpp::SHT_REL)
1119 this->incremental_relocs_write_reltype<elfcpp::SHT_REL>(
1120 relinfo,
1121 prelocs,
1122 reloc_count,
1123 output_section,
1124 output_offset,
1125 of);
1126 else
1127 {
1128 gold_assert(sh_type == elfcpp::SHT_RELA);
1129 this->incremental_relocs_write_reltype<elfcpp::SHT_RELA>(
1130 relinfo,
1131 prelocs,
1132 reloc_count,
1133 output_section,
1134 output_offset,
1135 of);
1136 }
1137}
1138
1139// Write the incremental relocs, templatized on the type of the
1140// relocation section.
1141
1142template<int size, bool big_endian>
1143template<int sh_type>
1144void
6fa2a40b 1145Sized_relobj_file<size, big_endian>::incremental_relocs_write_reltype(
09ec0418
CC
1146 const Relocate_info<size, big_endian>* relinfo,
1147 const unsigned char* prelocs,
1148 size_t reloc_count,
1149 Output_section* output_section,
1150 Address output_offset,
1151 Output_file* of)
1152{
1153 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reloc;
1154 const unsigned int reloc_size =
1155 Reloc_types<sh_type, size, big_endian>::reloc_size;
1156 const unsigned int sizeof_addr = size / 8;
cdc29364
CC
1157 const unsigned int incr_reloc_size =
1158 Incremental_relocs_reader<size, big_endian>::reloc_size;
09ec0418
CC
1159
1160 unsigned int out_shndx = output_section->out_shndx();
1161
1162 // Get a view for the .gnu_incremental_relocs section.
1163
1164 Incremental_inputs* inputs = relinfo->layout->incremental_inputs();
1165 gold_assert(inputs != NULL);
1166 const off_t relocs_off = inputs->relocs_section()->offset();
1167 const off_t relocs_size = inputs->relocs_section()->data_size();
1168 unsigned char* const view = of->get_output_view(relocs_off, relocs_size);
1169
1170 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
1171 {
1172 Reloc reloc(prelocs);
1173
1174 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1175 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1176 const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
1177
1178 if (r_sym < this->local_symbol_count_)
1179 continue;
1180
1181 // Get the new offset--the location in the output section where
1182 // this relocation should be applied.
1183
1184 Address offset = reloc.get_r_offset();
1185 if (output_offset != invalid_address)
1186 offset += output_offset;
1187 else
1188 {
1189 section_offset_type sot_offset =
1190 convert_types<section_offset_type, Address>(offset);
1191 section_offset_type new_sot_offset =
1192 output_section->output_offset(relinfo->object,
1193 relinfo->data_shndx,
1194 sot_offset);
1195 gold_assert(new_sot_offset != -1);
1196 offset += new_sot_offset;
1197 }
1198
1199 // Get the addend.
1200 typename elfcpp::Elf_types<size>::Elf_Swxword addend;
1201 if (sh_type == elfcpp::SHT_RELA)
1202 addend =
1203 Reloc_types<sh_type, size, big_endian>::get_reloc_addend(&reloc);
1204 else
1205 {
1206 // FIXME: Get the addend for SHT_REL.
1207 addend = 0;
1208 }
1209
1210 // Get the index of the output relocation.
1211
1212 unsigned int reloc_index =
1213 this->next_incremental_reloc_index(r_sym - this->local_symbol_count_);
1214
1215 // Write the relocation.
1216
1217 unsigned char* pov = view + reloc_index * incr_reloc_size;
1218 elfcpp::Swap<32, big_endian>::writeval(pov, r_type);
1219 elfcpp::Swap<32, big_endian>::writeval(pov + 4, out_shndx);
1220 elfcpp::Swap<size, big_endian>::writeval(pov + 8, offset);
1221 elfcpp::Swap<size, big_endian>::writeval(pov + 8 + sizeof_addr, addend);
1222 of->write_output_view(pov - view, incr_reloc_size, view);
1223 }
1224}
1225
a9a60db6
ILT
1226// Create merge hash tables for the local symbols. These are used to
1227// speed up relocations.
1228
1229template<int size, bool big_endian>
1230void
6fa2a40b 1231Sized_relobj_file<size, big_endian>::initialize_input_to_output_maps()
a9a60db6
ILT
1232{
1233 const unsigned int loccount = this->local_symbol_count_;
1234 for (unsigned int i = 1; i < loccount; ++i)
1235 {
1236 Symbol_value<size>& lv(this->local_values_[i]);
1237 lv.initialize_input_to_output_map(this);
1238 }
1239}
1240
1241// Free merge hash tables for the local symbols.
1242
1243template<int size, bool big_endian>
1244void
6fa2a40b 1245Sized_relobj_file<size, big_endian>::free_input_to_output_maps()
a9a60db6
ILT
1246{
1247 const unsigned int loccount = this->local_symbol_count_;
1248 for (unsigned int i = 1; i < loccount; ++i)
1249 {
1250 Symbol_value<size>& lv(this->local_values_[i]);
1251 lv.free_input_to_output_map();
1252 }
1253}
1254
364c7fa5
ILT
1255// If an object was compiled with -fsplit-stack, this is called to
1256// check whether any relocations refer to functions defined in objects
1257// which were not compiled with -fsplit-stack. If they were, then we
1258// need to apply some target-specific adjustments to request
1259// additional stack space.
1260
1261template<int size, bool big_endian>
1262void
6fa2a40b 1263Sized_relobj_file<size, big_endian>::split_stack_adjust(
364c7fa5
ILT
1264 const Symbol_table* symtab,
1265 const unsigned char* pshdrs,
1266 unsigned int sh_type,
1267 unsigned int shndx,
1268 const unsigned char* prelocs,
1269 size_t reloc_count,
2ea97941 1270 unsigned char* view,
364c7fa5
ILT
1271 section_size_type view_size,
1272 Reloc_symbol_changes** reloc_map)
1273{
1274 if (sh_type == elfcpp::SHT_REL)
1275 this->split_stack_adjust_reltype<elfcpp::SHT_REL>(symtab, pshdrs, shndx,
1276 prelocs, reloc_count,
2ea97941 1277 view, view_size,
364c7fa5
ILT
1278 reloc_map);
1279 else
1280 {
1281 gold_assert(sh_type == elfcpp::SHT_RELA);
1282 this->split_stack_adjust_reltype<elfcpp::SHT_RELA>(symtab, pshdrs, shndx,
1283 prelocs, reloc_count,
2ea97941 1284 view, view_size,
364c7fa5
ILT
1285 reloc_map);
1286 }
1287}
1288
1289// Adjust for -fsplit-stack, templatized on the type of the relocation
1290// section.
1291
1292template<int size, bool big_endian>
1293template<int sh_type>
1294void
6fa2a40b 1295Sized_relobj_file<size, big_endian>::split_stack_adjust_reltype(
364c7fa5
ILT
1296 const Symbol_table* symtab,
1297 const unsigned char* pshdrs,
1298 unsigned int shndx,
1299 const unsigned char* prelocs,
1300 size_t reloc_count,
2ea97941 1301 unsigned char* view,
364c7fa5
ILT
1302 section_size_type view_size,
1303 Reloc_symbol_changes** reloc_map)
1304{
1305 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
1306 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
1307
1308 size_t local_count = this->local_symbol_count();
1309
1310 std::vector<section_offset_type> non_split_refs;
1311
1312 const unsigned char* pr = prelocs;
1313 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1314 {
1315 Reltype reloc(pr);
1316
1317 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1318 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1319 if (r_sym < local_count)
1320 continue;
1321
1322 const Symbol* gsym = this->global_symbol(r_sym);
1323 gold_assert(gsym != NULL);
1324 if (gsym->is_forwarder())
1325 gsym = symtab->resolve_forwards(gsym);
1326
1327 // See if this relocation refers to a function defined in an
1328 // object compiled without -fsplit-stack. Note that we don't
1329 // care about the type of relocation--this means that in some
1330 // cases we will ask for a large stack unnecessarily, but this
1331 // is not fatal. FIXME: Some targets have symbols which are
1332 // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC.
b6848d3c 1333 if (!gsym->is_undefined()
364c7fa5
ILT
1334 && gsym->source() == Symbol::FROM_OBJECT
1335 && !gsym->object()->uses_split_stack())
1336 {
b6848d3c
ILT
1337 unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
1338 if (parameters->target().is_call_to_non_split(gsym, r_type))
1339 {
1340 section_offset_type offset =
1341 convert_to_section_size_type(reloc.get_r_offset());
1342 non_split_refs.push_back(offset);
1343 }
364c7fa5
ILT
1344 }
1345 }
1346
1347 if (non_split_refs.empty())
1348 return;
1349
1350 // At this point, every entry in NON_SPLIT_REFS indicates a
1351 // relocation which refers to a function in an object compiled
1352 // without -fsplit-stack. We now have to convert that list into a
1353 // set of offsets to functions. First, we find all the functions.
1354
1355 Function_offsets function_offsets;
1356 this->find_functions(pshdrs, shndx, &function_offsets);
1357 if (function_offsets.empty())
1358 return;
1359
1360 // Now get a list of the function with references to non split-stack
1361 // code.
1362
1363 Function_offsets calls_non_split;
1364 for (std::vector<section_offset_type>::const_iterator p
1365 = non_split_refs.begin();
1366 p != non_split_refs.end();
1367 ++p)
1368 {
1369 Function_offsets::const_iterator low = function_offsets.lower_bound(*p);
1370 if (low == function_offsets.end())
1371 --low;
1372 else if (low->first == *p)
1373 ;
1374 else if (low == function_offsets.begin())
1375 continue;
1376 else
1377 --low;
1378
1379 calls_non_split.insert(*low);
1380 }
1381 if (calls_non_split.empty())
1382 return;
1383
1384 // Now we have a set of functions to adjust. The adjustments are
1385 // target specific. Besides changing the output section view
1386 // however, it likes, the target may request a relocation change
1387 // from one global symbol name to another.
1388
1389 for (Function_offsets::const_iterator p = calls_non_split.begin();
1390 p != calls_non_split.end();
1391 ++p)
1392 {
1393 std::string from;
1394 std::string to;
1395 parameters->target().calls_non_split(this, shndx, p->first, p->second,
2ea97941 1396 view, view_size, &from, &to);
364c7fa5
ILT
1397 if (!from.empty())
1398 {
1399 gold_assert(!to.empty());
1400 Symbol* tosym = NULL;
1401
1402 // Find relocations in the relevant function which are for
1403 // FROM.
1404 pr = prelocs;
1405 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1406 {
1407 Reltype reloc(pr);
1408
1409 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
1410 reloc.get_r_info();
1411 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1412 if (r_sym < local_count)
1413 continue;
1414
2ea97941 1415 section_offset_type offset =
364c7fa5 1416 convert_to_section_size_type(reloc.get_r_offset());
2ea97941
ILT
1417 if (offset < p->first
1418 || (offset
364c7fa5
ILT
1419 >= (p->first
1420 + static_cast<section_offset_type>(p->second))))
1421 continue;
1422
1423 const Symbol* gsym = this->global_symbol(r_sym);
1424 if (from == gsym->name())
1425 {
1426 if (tosym == NULL)
1427 {
1428 tosym = symtab->lookup(to.c_str());
1429 if (tosym == NULL)
1430 {
1431 this->error(_("could not convert call "
1432 "to '%s' to '%s'"),
1433 from.c_str(), to.c_str());
1434 break;
1435 }
1436 }
1437
1438 if (*reloc_map == NULL)
1439 *reloc_map = new Reloc_symbol_changes(reloc_count);
1440 (*reloc_map)->set(i, tosym);
1441 }
1442 }
1443 }
1444 }
1445}
1446
1447// Find all the function in this object defined in section SHNDX.
1448// Store their offsets in the section in FUNCTION_OFFSETS.
1449
1450template<int size, bool big_endian>
1451void
6fa2a40b 1452Sized_relobj_file<size, big_endian>::find_functions(
364c7fa5
ILT
1453 const unsigned char* pshdrs,
1454 unsigned int shndx,
6fa2a40b 1455 Sized_relobj_file<size, big_endian>::Function_offsets* function_offsets)
364c7fa5
ILT
1456{
1457 // We need to read the symbols to find the functions. If we wanted
1458 // to, we could cache reading the symbols across all sections in the
1459 // object.
2ea97941
ILT
1460 const unsigned int symtab_shndx = this->symtab_shndx_;
1461 typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size);
364c7fa5
ILT
1462 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
1463
1464 typename elfcpp::Elf_types<size>::Elf_WXword sh_size =
1465 symtabshdr.get_sh_size();
1466 const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
1467 sh_size, true, true);
1468
2ea97941
ILT
1469 const int sym_size = This::sym_size;
1470 const unsigned int symcount = sh_size / sym_size;
1471 for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size)
364c7fa5
ILT
1472 {
1473 typename elfcpp::Sym<size, big_endian> isym(psyms);
1474
1475 // FIXME: Some targets can have functions which do not have type
1476 // STT_FUNC, e.g., STT_ARM_TFUNC.
1477 if (isym.get_st_type() != elfcpp::STT_FUNC
1478 || isym.get_st_size() == 0)
1479 continue;
1480
1481 bool is_ordinary;
1482 unsigned int sym_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
1483 &is_ordinary);
1484 if (!is_ordinary || sym_shndx != shndx)
1485 continue;
1486
1487 section_offset_type value =
1488 convert_to_section_size_type(isym.get_st_value());
1489 section_size_type fnsize =
1490 convert_to_section_size_type(isym.get_st_size());
1491
1492 (*function_offsets)[value] = fnsize;
1493 }
1494}
1495
487b39df
ILT
1496// Reverse the words in a section. Used for .ctors sections mapped to
1497// .init_array sections. See ctors_sections_in_init_array in
1498// layout.cc.
1499
1500template<int size, bool big_endian>
1501void
1502Sized_relobj_file<size, big_endian>::reverse_words(unsigned char* view,
1503 section_size_type view_size)
1504{
1505 typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
1506 Valtype* vview = reinterpret_cast<Valtype*>(view);
1507 section_size_type vview_size = view_size / (size / 8);
1508 for (section_size_type i = 0; i < vview_size / 2; ++i)
1509 {
1510 Valtype tmp = vview[i];
1511 vview[i] = vview[vview_size - 1 - i];
1512 vview[vview_size - 1 - i] = tmp;
1513 }
1514}
1515
a9a60db6
ILT
1516// Class Merged_symbol_value.
1517
1518template<int size>
1519void
1520Merged_symbol_value<size>::initialize_input_to_output_map(
1521 const Relobj* object,
1522 unsigned int input_shndx)
1523{
1524 Object_merge_map* map = object->merge_map();
1525 map->initialize_input_to_output_map<size>(input_shndx,
1526 this->output_start_address_,
1527 &this->output_addresses_);
1528}
1529
1530// Get the output value corresponding to an input offset if we
1531// couldn't find it in the hash table.
1532
1533template<int size>
1534typename elfcpp::Elf_types<size>::Elf_Addr
1535Merged_symbol_value<size>::value_from_output_section(
1536 const Relobj* object,
1537 unsigned int input_shndx,
1538 typename elfcpp::Elf_types<size>::Elf_Addr input_offset) const
1539{
1540 section_offset_type output_offset;
1541 bool found = object->merge_map()->get_output_offset(NULL, input_shndx,
1542 input_offset,
1543 &output_offset);
1544
1545 // If this assertion fails, it means that some relocation was
1546 // against a portion of an input merge section which we didn't map
1547 // to the output file and we didn't explicitly discard. We should
1548 // always map all portions of input merge sections.
1549 gold_assert(found);
1550
1551 if (output_offset == -1)
1552 return 0;
1553 else
1554 return this->output_start_address_ + output_offset;
1555}
1556
730cdc88
ILT
1557// Track_relocs methods.
1558
1559// Initialize the class to track the relocs. This gets the object,
1560// the reloc section index, and the type of the relocs. This returns
1561// false if something goes wrong.
1562
1563template<int size, bool big_endian>
1564bool
1565Track_relocs<size, big_endian>::initialize(
b696e6d4 1566 Object* object,
730cdc88
ILT
1567 unsigned int reloc_shndx,
1568 unsigned int reloc_type)
1569{
730cdc88
ILT
1570 // If RELOC_SHNDX is -1U, it means there is more than one reloc
1571 // section for the .eh_frame section. We can't handle that case.
1572 if (reloc_shndx == -1U)
1573 return false;
1574
1575 // If RELOC_SHNDX is 0, there is no reloc section.
1576 if (reloc_shndx == 0)
1577 return true;
1578
1579 // Get the contents of the reloc section.
1580 this->prelocs_ = object->section_contents(reloc_shndx, &this->len_, false);
1581
1582 if (reloc_type == elfcpp::SHT_REL)
1583 this->reloc_size_ = elfcpp::Elf_sizes<size>::rel_size;
1584 else if (reloc_type == elfcpp::SHT_RELA)
1585 this->reloc_size_ = elfcpp::Elf_sizes<size>::rela_size;
1586 else
1587 gold_unreachable();
1588
1589 if (this->len_ % this->reloc_size_ != 0)
1590 {
1591 object->error(_("reloc section size %zu is not a multiple of "
1592 "reloc size %d\n"),
1593 static_cast<size_t>(this->len_),
1594 this->reloc_size_);
1595 return false;
1596 }
1597
1598 return true;
1599}
1600
1601// Return the offset of the next reloc, or -1 if there isn't one.
1602
1603template<int size, bool big_endian>
1604off_t
1605Track_relocs<size, big_endian>::next_offset() const
1606{
1607 if (this->pos_ >= this->len_)
1608 return -1;
1609
1610 // Rel and Rela start out the same, so we can always use Rel to find
1611 // the r_offset value.
1612 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1613 return rel.get_r_offset();
1614}
1615
1616// Return the index of the symbol referenced by the next reloc, or -1U
1617// if there aren't any more relocs.
1618
1619template<int size, bool big_endian>
1620unsigned int
1621Track_relocs<size, big_endian>::next_symndx() const
1622{
1623 if (this->pos_ >= this->len_)
1624 return -1U;
1625
1626 // Rel and Rela start out the same, so we can use Rel to find the
1627 // symbol index.
1628 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1629 return elfcpp::elf_r_sym<size>(rel.get_r_info());
1630}
1631
4dbfafcc
ILT
1632// Return the addend of the next reloc, or 0 if there isn't one.
1633
1634template<int size, bool big_endian>
1635uint64_t
1636Track_relocs<size, big_endian>::next_addend() const
1637{
1638 if (this->pos_ >= this->len_)
1639 return 0;
1640 if (this->reloc_size_ == elfcpp::Elf_sizes<size>::rel_size)
1641 return 0;
1642 elfcpp::Rela<size, big_endian> rela(this->prelocs_ + this->pos_);
1643 return rela.get_r_addend();
1644}
1645
730cdc88
ILT
1646// Advance to the next reloc whose r_offset is greater than or equal
1647// to OFFSET. Return the number of relocs we skip.
1648
1649template<int size, bool big_endian>
1650int
1651Track_relocs<size, big_endian>::advance(off_t offset)
1652{
1653 int ret = 0;
1654 while (this->pos_ < this->len_)
1655 {
1656 // Rel and Rela start out the same, so we can always use Rel to
1657 // find the r_offset value.
1658 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1659 if (static_cast<off_t>(rel.get_r_offset()) >= offset)
1660 break;
1661 ++ret;
1662 this->pos_ += this->reloc_size_;
1663 }
1664 return ret;
1665}
1666
12c0daef 1667// Instantiate the templates we need.
61ba1cf9 1668
193a53d9 1669#ifdef HAVE_TARGET_32_LITTLE
92e059d8
ILT
1670template
1671void
6fa2a40b 1672Sized_relobj_file<32, false>::do_read_relocs(Read_relocs_data* rd);
193a53d9 1673#endif
92e059d8 1674
193a53d9 1675#ifdef HAVE_TARGET_32_BIG
92e059d8
ILT
1676template
1677void
6fa2a40b 1678Sized_relobj_file<32, true>::do_read_relocs(Read_relocs_data* rd);
193a53d9 1679#endif
92e059d8 1680
193a53d9 1681#ifdef HAVE_TARGET_64_LITTLE
92e059d8
ILT
1682template
1683void
6fa2a40b 1684Sized_relobj_file<64, false>::do_read_relocs(Read_relocs_data* rd);
193a53d9 1685#endif
92e059d8 1686
193a53d9 1687#ifdef HAVE_TARGET_64_BIG
92e059d8
ILT
1688template
1689void
6fa2a40b 1690Sized_relobj_file<64, true>::do_read_relocs(Read_relocs_data* rd);
193a53d9 1691#endif
92e059d8 1692
6d03d481
ST
1693#ifdef HAVE_TARGET_32_LITTLE
1694template
1695void
6fa2a40b
CC
1696Sized_relobj_file<32, false>::do_gc_process_relocs(Symbol_table* symtab,
1697 Layout* layout,
1698 Read_relocs_data* rd);
6d03d481
ST
1699#endif
1700
1701#ifdef HAVE_TARGET_32_BIG
1702template
1703void
6fa2a40b
CC
1704Sized_relobj_file<32, true>::do_gc_process_relocs(Symbol_table* symtab,
1705 Layout* layout,
1706 Read_relocs_data* rd);
6d03d481
ST
1707#endif
1708
1709#ifdef HAVE_TARGET_64_LITTLE
1710template
1711void
6fa2a40b
CC
1712Sized_relobj_file<64, false>::do_gc_process_relocs(Symbol_table* symtab,
1713 Layout* layout,
1714 Read_relocs_data* rd);
6d03d481
ST
1715#endif
1716
1717#ifdef HAVE_TARGET_64_BIG
1718template
1719void
6fa2a40b
CC
1720Sized_relobj_file<64, true>::do_gc_process_relocs(Symbol_table* symtab,
1721 Layout* layout,
1722 Read_relocs_data* rd);
6d03d481
ST
1723#endif
1724
193a53d9 1725#ifdef HAVE_TARGET_32_LITTLE
92e059d8
ILT
1726template
1727void
6fa2a40b
CC
1728Sized_relobj_file<32, false>::do_scan_relocs(Symbol_table* symtab,
1729 Layout* layout,
1730 Read_relocs_data* rd);
193a53d9 1731#endif
92e059d8 1732
193a53d9 1733#ifdef HAVE_TARGET_32_BIG
92e059d8
ILT
1734template
1735void
6fa2a40b
CC
1736Sized_relobj_file<32, true>::do_scan_relocs(Symbol_table* symtab,
1737 Layout* layout,
1738 Read_relocs_data* rd);
193a53d9 1739#endif
92e059d8 1740
193a53d9 1741#ifdef HAVE_TARGET_64_LITTLE
92e059d8
ILT
1742template
1743void
6fa2a40b
CC
1744Sized_relobj_file<64, false>::do_scan_relocs(Symbol_table* symtab,
1745 Layout* layout,
1746 Read_relocs_data* rd);
193a53d9 1747#endif
92e059d8 1748
193a53d9 1749#ifdef HAVE_TARGET_64_BIG
92e059d8
ILT
1750template
1751void
6fa2a40b
CC
1752Sized_relobj_file<64, true>::do_scan_relocs(Symbol_table* symtab,
1753 Layout* layout,
1754 Read_relocs_data* rd);
193a53d9 1755#endif
92e059d8 1756
193a53d9 1757#ifdef HAVE_TARGET_32_LITTLE
61ba1cf9
ILT
1758template
1759void
6fa2a40b
CC
1760Sized_relobj_file<32, false>::do_relocate(const Symbol_table* symtab,
1761 const Layout* layout,
1762 Output_file* of);
193a53d9 1763#endif
61ba1cf9 1764
193a53d9 1765#ifdef HAVE_TARGET_32_BIG
61ba1cf9
ILT
1766template
1767void
6fa2a40b
CC
1768Sized_relobj_file<32, true>::do_relocate(const Symbol_table* symtab,
1769 const Layout* layout,
1770 Output_file* of);
193a53d9 1771#endif
61ba1cf9 1772
193a53d9 1773#ifdef HAVE_TARGET_64_LITTLE
61ba1cf9
ILT
1774template
1775void
6fa2a40b
CC
1776Sized_relobj_file<64, false>::do_relocate(const Symbol_table* symtab,
1777 const Layout* layout,
1778 Output_file* of);
193a53d9 1779#endif
61ba1cf9 1780
193a53d9 1781#ifdef HAVE_TARGET_64_BIG
61ba1cf9
ILT
1782template
1783void
6fa2a40b
CC
1784Sized_relobj_file<64, true>::do_relocate(const Symbol_table* symtab,
1785 const Layout* layout,
1786 Output_file* of);
193a53d9 1787#endif
61ba1cf9 1788
72adc4fa
DK
1789#ifdef HAVE_TARGET_32_LITTLE
1790template
1791void
6fa2a40b 1792Sized_relobj_file<32, false>::do_relocate_sections(
72adc4fa 1793 const Symbol_table* symtab,
2ea97941 1794 const Layout* layout,
72adc4fa 1795 const unsigned char* pshdrs,
09ec0418 1796 Output_file* of,
72adc4fa
DK
1797 Views* pviews);
1798#endif
1799
1800#ifdef HAVE_TARGET_32_BIG
1801template
1802void
6fa2a40b 1803Sized_relobj_file<32, true>::do_relocate_sections(
72adc4fa 1804 const Symbol_table* symtab,
2ea97941 1805 const Layout* layout,
72adc4fa 1806 const unsigned char* pshdrs,
09ec0418 1807 Output_file* of,
72adc4fa
DK
1808 Views* pviews);
1809#endif
1810
1811#ifdef HAVE_TARGET_64_LITTLE
1812template
1813void
6fa2a40b 1814Sized_relobj_file<64, false>::do_relocate_sections(
72adc4fa 1815 const Symbol_table* symtab,
2ea97941 1816 const Layout* layout,
72adc4fa 1817 const unsigned char* pshdrs,
09ec0418 1818 Output_file* of,
72adc4fa
DK
1819 Views* pviews);
1820#endif
1821
1822#ifdef HAVE_TARGET_64_BIG
1823template
1824void
6fa2a40b 1825Sized_relobj_file<64, true>::do_relocate_sections(
72adc4fa
DK
1826 const Symbol_table* symtab,
1827 const Layout* layout,
1828 const unsigned char* pshdrs,
09ec0418 1829 Output_file* of,
72adc4fa
DK
1830 Views* pviews);
1831#endif
1832
3e4afc80
ILT
1833#ifdef HAVE_TARGET_32_LITTLE
1834template
1835void
6fa2a40b 1836Sized_relobj_file<32, false>::initialize_input_to_output_maps();
3e4afc80
ILT
1837
1838template
1839void
6fa2a40b 1840Sized_relobj_file<32, false>::free_input_to_output_maps();
3e4afc80
ILT
1841#endif
1842
1843#ifdef HAVE_TARGET_32_BIG
1844template
1845void
6fa2a40b 1846Sized_relobj_file<32, true>::initialize_input_to_output_maps();
3e4afc80
ILT
1847
1848template
1849void
6fa2a40b 1850Sized_relobj_file<32, true>::free_input_to_output_maps();
3e4afc80
ILT
1851#endif
1852
1853#ifdef HAVE_TARGET_64_LITTLE
1854template
1855void
6fa2a40b 1856Sized_relobj_file<64, false>::initialize_input_to_output_maps();
3e4afc80
ILT
1857
1858template
1859void
6fa2a40b 1860Sized_relobj_file<64, false>::free_input_to_output_maps();
3e4afc80
ILT
1861#endif
1862
1863#ifdef HAVE_TARGET_64_BIG
1864template
1865void
6fa2a40b 1866Sized_relobj_file<64, true>::initialize_input_to_output_maps();
3e4afc80
ILT
1867
1868template
1869void
6fa2a40b 1870Sized_relobj_file<64, true>::free_input_to_output_maps();
3e4afc80
ILT
1871#endif
1872
a9a60db6
ILT
1873#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1874template
1875class Merged_symbol_value<32>;
1876#endif
1877
1878#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1879template
1880class Merged_symbol_value<64>;
1881#endif
1882
1883#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1884template
1885class Symbol_value<32>;
1886#endif
1887
1888#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1889template
1890class Symbol_value<64>;
1891#endif
1892
730cdc88
ILT
1893#ifdef HAVE_TARGET_32_LITTLE
1894template
1895class Track_relocs<32, false>;
1896#endif
1897
1898#ifdef HAVE_TARGET_32_BIG
1899template
1900class Track_relocs<32, true>;
1901#endif
1902
1903#ifdef HAVE_TARGET_64_LITTLE
1904template
1905class Track_relocs<64, false>;
1906#endif
1907
1908#ifdef HAVE_TARGET_64_BIG
1909template
1910class Track_relocs<64, true>;
1911#endif
1912
61ba1cf9 1913} // End namespace gold.
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