gold/reloc.cc

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