gold/output.cc

   1 // output.cc -- manage the output file for gold
   2
   3 #include "gold.h"
   4
   5 #include <cstdlib>
   6 #include <cerrno>
   7 #include <fcntl.h>
   8 #include <unistd.h>
   9 #include <sys/mman.h>
  10 #include <algorithm>
  11
  12 #include "object.h"
  13 #include "symtab.h"
  14 #include "reloc.h"
  15 #include "output.h"
  16
  17 namespace gold
  18 {
  19
  20 // Output_data variables.
  21
  22 bool Output_data::sizes_are_fixed;
  23
  24 // Output_data methods.
  25
  26 Output_data::~Output_data()
  27 {
  28 }
  29
  30 // Set the address and offset.
  31
  32 void
  33 Output_data::set_address(uint64_t addr, off_t off)
  34 {
  35   this->address_ = addr;
  36   this->offset_ = off;
  37
  38   // Let the child class know.
  39   this->do_set_address(addr, off);
  40 }
  41
  42 // Return the default alignment for a size--32 or 64.
  43
  44 uint64_t
  45 Output_data::default_alignment(int size)
  46 {
  47   if (size == 32)
  48     return 4;
  49   else if (size == 64)
  50     return 8;
  51   else
  52     gold_unreachable();
  53 }
  54
  55 // Output_section_header methods.  This currently assumes that the
  56 // segment and section lists are complete at construction time.
  57
  58 Output_section_headers::Output_section_headers(
  59     int size,
  60     bool big_endian,
  61     const Layout* layout,
  62     const Layout::Segment_list* segment_list,
  63     const Layout::Section_list* unattached_section_list,
  64     const Stringpool* secnamepool)
  65   : size_(size),
  66     big_endian_(big_endian),
  67     layout_(layout),
  68     segment_list_(segment_list),
  69     unattached_section_list_(unattached_section_list),
  70     secnamepool_(secnamepool)
  71 {
  72   // Count all the sections.  Start with 1 for the null section.
  73   off_t count = 1;
  74   for (Layout::Segment_list::const_iterator p = segment_list->begin();
  75        p != segment_list->end();
  76        ++p)
  77     if ((*p)->type() == elfcpp::PT_LOAD)
  78       count += (*p)->output_section_count();
  79   count += unattached_section_list->size();
  80
  81   int shdr_size;
  82   if (size == 32)
  83     shdr_size = elfcpp::Elf_sizes<32>::shdr_size;
  84   else if (size == 64)
  85     shdr_size = elfcpp::Elf_sizes<64>::shdr_size;
  86   else
  87     gold_unreachable();
  88
  89   this->set_data_size(count * shdr_size);
  90 }
  91
  92 // Write out the section headers.
  93
  94 void
  95 Output_section_headers::do_write(Output_file* of)
  96 {
  97   if (this->size_ == 32)
  98     {
  99       if (this->big_endian_)
 100         this->do_sized_write<32, true>(of);
 101       else
 102         this->do_sized_write<32, false>(of);
 103     }
 104   else if (this->size_ == 64)
 105     {
 106       if (this->big_endian_)
 107         this->do_sized_write<64, true>(of);
 108       else
 109         this->do_sized_write<64, false>(of);
 110     }
 111   else
 112     gold_unreachable();
 113 }
 114
 115 template<int size, bool big_endian>
 116 void
 117 Output_section_headers::do_sized_write(Output_file* of)
 118 {
 119   off_t all_shdrs_size = this->data_size();
 120   unsigned char* view = of->get_output_view(this->offset(), all_shdrs_size);
 121
 122   const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
 123   unsigned char* v = view;
 124
 125   {
 126     typename elfcpp::Shdr_write<size, big_endian> oshdr(v);
 127     oshdr.put_sh_name(0);
 128     oshdr.put_sh_type(elfcpp::SHT_NULL);
 129     oshdr.put_sh_flags(0);
 130     oshdr.put_sh_addr(0);
 131     oshdr.put_sh_offset(0);
 132     oshdr.put_sh_size(0);
 133     oshdr.put_sh_link(0);
 134     oshdr.put_sh_info(0);
 135     oshdr.put_sh_addralign(0);
 136     oshdr.put_sh_entsize(0);
 137   }
 138
 139   v += shdr_size;
 140
 141   unsigned shndx = 1;
 142   for (Layout::Segment_list::const_iterator p = this->segment_list_->begin();
 143        p != this->segment_list_->end();
 144        ++p)
 145     v = (*p)->write_section_headers SELECT_SIZE_ENDIAN_NAME(size, big_endian) (
 146             this->layout_, this->secnamepool_, v, &shndx
 147             SELECT_SIZE_ENDIAN(size, big_endian));
 148   for (Layout::Section_list::const_iterator p =
 149          this->unattached_section_list_->begin();
 150        p != this->unattached_section_list_->end();
 151        ++p)
 152     {
 153       gold_assert(shndx == (*p)->out_shndx());
 154       elfcpp::Shdr_write<size, big_endian> oshdr(v);
 155       (*p)->write_header(this->layout_, this->secnamepool_, &oshdr);
 156       v += shdr_size;
 157       ++shndx;
 158     }
 159
 160   of->write_output_view(this->offset(), all_shdrs_size, view);
 161 }
 162
 163 // Output_segment_header methods.
 164
 165 Output_segment_headers::Output_segment_headers(
 166     int size,
 167     bool big_endian,
 168     const Layout::Segment_list& segment_list)
 169   : size_(size), big_endian_(big_endian), segment_list_(segment_list)
 170 {
 171   int phdr_size;
 172   if (size == 32)
 173     phdr_size = elfcpp::Elf_sizes<32>::phdr_size;
 174   else if (size == 64)
 175     phdr_size = elfcpp::Elf_sizes<64>::phdr_size;
 176   else
 177     gold_unreachable();
 178
 179   this->set_data_size(segment_list.size() * phdr_size);
 180 }
 181
 182 void
 183 Output_segment_headers::do_write(Output_file* of)
 184 {
 185   if (this->size_ == 32)
 186     {
 187       if (this->big_endian_)
 188         this->do_sized_write<32, true>(of);
 189       else
 190         this->do_sized_write<32, false>(of);
 191     }
 192   else if (this->size_ == 64)
 193     {
 194       if (this->big_endian_)
 195         this->do_sized_write<64, true>(of);
 196       else
 197         this->do_sized_write<64, false>(of);
 198     }
 199   else
 200     gold_unreachable();
 201 }
 202
 203 template<int size, bool big_endian>
 204 void
 205 Output_segment_headers::do_sized_write(Output_file* of)
 206 {
 207   const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size;
 208   off_t all_phdrs_size = this->segment_list_.size() * phdr_size;
 209   unsigned char* view = of->get_output_view(this->offset(),
 210                                             all_phdrs_size);
 211   unsigned char* v = view;
 212   for (Layout::Segment_list::const_iterator p = this->segment_list_.begin();
 213        p != this->segment_list_.end();
 214        ++p)
 215     {
 216       elfcpp::Phdr_write<size, big_endian> ophdr(v);
 217       (*p)->write_header(&ophdr);
 218       v += phdr_size;
 219     }
 220
 221   of->write_output_view(this->offset(), all_phdrs_size, view);
 222 }
 223
 224 // Output_file_header methods.
 225
 226 Output_file_header::Output_file_header(int size,
 227                                        bool big_endian,
 228                                        const General_options& options,
 229                                        const Target* target,
 230                                        const Symbol_table* symtab,
 231                                        const Output_segment_headers* osh)
 232   : size_(size),
 233     big_endian_(big_endian),
 234     options_(options),
 235     target_(target),
 236     symtab_(symtab),
 237     segment_header_(osh),
 238     section_header_(NULL),
 239     shstrtab_(NULL)
 240 {
 241   int ehdr_size;
 242   if (size == 32)
 243     ehdr_size = elfcpp::Elf_sizes<32>::ehdr_size;
 244   else if (size == 64)
 245     ehdr_size = elfcpp::Elf_sizes<64>::ehdr_size;
 246   else
 247     gold_unreachable();
 248
 249   this->set_data_size(ehdr_size);
 250 }
 251
 252 // Set the section table information for a file header.
 253
 254 void
 255 Output_file_header::set_section_info(const Output_section_headers* shdrs,
 256                                      const Output_section* shstrtab)
 257 {
 258   this->section_header_ = shdrs;
 259   this->shstrtab_ = shstrtab;
 260 }
 261
 262 // Write out the file header.
 263
 264 void
 265 Output_file_header::do_write(Output_file* of)
 266 {
 267   if (this->size_ == 32)
 268     {
 269       if (this->big_endian_)
 270         this->do_sized_write<32, true>(of);
 271       else
 272         this->do_sized_write<32, false>(of);
 273     }
 274   else if (this->size_ == 64)
 275     {
 276       if (this->big_endian_)
 277         this->do_sized_write<64, true>(of);
 278       else
 279         this->do_sized_write<64, false>(of);
 280     }
 281   else
 282     gold_unreachable();
 283 }
 284
 285 // Write out the file header with appropriate size and endianess.
 286
 287 template<int size, bool big_endian>
 288 void
 289 Output_file_header::do_sized_write(Output_file* of)
 290 {
 291   gold_assert(this->offset() == 0);
 292
 293   int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size;
 294   unsigned char* view = of->get_output_view(0, ehdr_size);
 295   elfcpp::Ehdr_write<size, big_endian> oehdr(view);
 296
 297   unsigned char e_ident[elfcpp::EI_NIDENT];
 298   memset(e_ident, 0, elfcpp::EI_NIDENT);
 299   e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0;
 300   e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1;
 301   e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2;
 302   e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3;
 303   if (size == 32)
 304     e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32;
 305   else if (size == 64)
 306     e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64;
 307   else
 308     gold_unreachable();
 309   e_ident[elfcpp::EI_DATA] = (big_endian
 310                               ? elfcpp::ELFDATA2MSB
 311                               : elfcpp::ELFDATA2LSB);
 312   e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT;
 313   // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION.
 314   oehdr.put_e_ident(e_ident);
 315
 316   elfcpp::ET e_type;
 317   // FIXME: ET_DYN.
 318   if (this->options_.is_relocatable())
 319     e_type = elfcpp::ET_REL;
 320   else
 321     e_type = elfcpp::ET_EXEC;
 322   oehdr.put_e_type(e_type);
 323
 324   oehdr.put_e_machine(this->target_->machine_code());
 325   oehdr.put_e_version(elfcpp::EV_CURRENT);
 326
 327   // FIXME: Need to support -e, and target specific entry symbol.
 328   Symbol* sym = this->symtab_->lookup("_start");
 329   typename Sized_symbol<size>::Value_type v;
 330   if (sym == NULL)
 331     v = 0;
 332   else
 333     {
 334       Sized_symbol<size>* ssym;
 335       ssym = this->symtab_->get_sized_symbol SELECT_SIZE_NAME(size) (
 336         sym SELECT_SIZE(size));
 337       v = ssym->value();
 338     }
 339   oehdr.put_e_entry(v);
 340
 341   oehdr.put_e_phoff(this->segment_header_->offset());
 342   oehdr.put_e_shoff(this->section_header_->offset());
 343
 344   // FIXME: The target needs to set the flags.
 345   oehdr.put_e_flags(0);
 346
 347   oehdr.put_e_ehsize(elfcpp::Elf_sizes<size>::ehdr_size);
 348   oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size);
 349   oehdr.put_e_phnum(this->segment_header_->data_size()
 350                      / elfcpp::Elf_sizes<size>::phdr_size);
 351   oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size);
 352   oehdr.put_e_shnum(this->section_header_->data_size()
 353                      / elfcpp::Elf_sizes<size>::shdr_size);
 354   oehdr.put_e_shstrndx(this->shstrtab_->out_shndx());
 355
 356   of->write_output_view(0, ehdr_size, view);
 357 }
 358
 359 // Output_data_const methods.
 360
 361 void
 362 Output_data_const::do_write(Output_file* of)
 363 {
 364   of->write(this->offset(), this->data_.data(), this->data_.size());
 365 }
 366
 367 // Output_data_const_buffer methods.
 368
 369 void
 370 Output_data_const_buffer::do_write(Output_file* of)
 371 {
 372   of->write(this->offset(), this->p_, this->data_size());
 373 }
 374
 375 // Output_section_data methods.
 376
 377 // Record the output section, and set the entry size and such.
 378
 379 void
 380 Output_section_data::set_output_section(Output_section* os)
 381 {
 382   gold_assert(this->output_section_ == NULL);
 383   this->output_section_ = os;
 384   this->do_adjust_output_section(os);
 385 }
 386
 387 // Return the section index of the output section.
 388
 389 unsigned int
 390 Output_section_data::do_out_shndx() const
 391 {
 392   gold_assert(this->output_section_ != NULL);
 393   return this->output_section_->out_shndx();
 394 }
 395
 396 // Output_data_strtab methods.
 397
 398 // Set the address.  We don't actually care about the address, but we
 399 // do set our final size.
 400
 401 void
 402 Output_data_strtab::do_set_address(uint64_t, off_t)
 403 {
 404   this->strtab_->set_string_offsets();
 405   this->set_data_size(this->strtab_->get_strtab_size());
 406 }
 407
 408 // Write out a string table.
 409
 410 void
 411 Output_data_strtab::do_write(Output_file* of)
 412 {
 413   this->strtab_->write(of, this->offset());
 414 }
 415
 416 // Output_reloc methods.
 417
 418 // Get the symbol index of a relocation.
 419
 420 template<bool dynamic, int size, bool big_endian>
 421 unsigned int
 422 Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index()
 423   const
 424 {
 425   unsigned int index;
 426   switch (this->local_sym_index_)
 427     {
 428     case INVALID_CODE:
 429       gold_unreachable();
 430
 431     case GSYM_CODE:
 432       if (this->u1_.gsym == NULL)
 433         index = 0;
 434       else if (dynamic)
 435         index = this->u1_.gsym->dynsym_index();
 436       else
 437         index = this->u1_.gsym->symtab_index();
 438       break;
 439
 440     case SECTION_CODE:
 441       if (dynamic)
 442         index = this->u1_.os->dynsym_index();
 443       else
 444         index = this->u1_.os->symtab_index();
 445       break;
 446
 447     default:
 448       if (dynamic)
 449         {
 450           // FIXME: It seems that some targets may need to generate
 451           // dynamic relocations against local symbols for some
 452           // reasons.  This will have to be addressed at some point.
 453           gold_unreachable();
 454         }
 455       else
 456         index = this->u1_.relobj->symtab_index(this->local_sym_index_);
 457       break;
 458     }
 459   gold_assert(index != -1U);
 460   return index;
 461 }
 462
 463 // Write out the offset and info fields of a Rel or Rela relocation
 464 // entry.
 465
 466 template<bool dynamic, int size, bool big_endian>
 467 template<typename Write_rel>
 468 void
 469 Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel(
 470     Write_rel* wr) const
 471 {
 472   Address address = this->address_;
 473   if (this->shndx_ != INVALID_CODE)
 474     {
 475       off_t off;
 476       Output_section* os = this->u2_.relobj->output_section(this->shndx_,
 477                                                             &off);
 478       gold_assert(os != NULL);
 479       address += os->address() + off;
 480     }
 481   else if (this->u2_.od != NULL)
 482     address += this->u2_.od->address();
 483   wr->put_r_offset(address);
 484   wr->put_r_info(elfcpp::elf_r_info<size>(this->get_symbol_index(),
 485                                           this->type_));
 486 }
 487
 488 // Write out a Rel relocation.
 489
 490 template<bool dynamic, int size, bool big_endian>
 491 void
 492 Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write(
 493     unsigned char* pov) const
 494 {
 495   elfcpp::Rel_write<size, big_endian> orel(pov);
 496   this->write_rel(&orel);
 497 }
 498
 499 // Write out a Rela relocation.
 500
 501 template<bool dynamic, int size, bool big_endian>
 502 void
 503 Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write(
 504     unsigned char* pov) const
 505 {
 506   elfcpp::Rela_write<size, big_endian> orel(pov);
 507   this->rel_.write_rel(&orel);
 508   orel.put_r_addend(this->addend_);
 509 }
 510
 511 // Output_data_reloc_base methods.
 512
 513 // Adjust the output section.
 514
 515 template<int sh_type, bool dynamic, int size, bool big_endian>
 516 void
 517 Output_data_reloc_base<sh_type, dynamic, size, big_endian>
 518     ::do_adjust_output_section(Output_section* os)
 519 {
 520   if (sh_type == elfcpp::SHT_REL)
 521     os->set_entsize(elfcpp::Elf_sizes<size>::rel_size);
 522   else if (sh_type == elfcpp::SHT_RELA)
 523     os->set_entsize(elfcpp::Elf_sizes<size>::rela_size);
 524   else
 525     gold_unreachable();
 526   if (dynamic)
 527     os->set_should_link_to_dynsym();
 528   else
 529     os->set_should_link_to_symtab();
 530 }
 531
 532 // Write out relocation data.
 533
 534 template<int sh_type, bool dynamic, int size, bool big_endian>
 535 void
 536 Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write(
 537     Output_file* of)
 538 {
 539   const off_t off = this->offset();
 540   const off_t oview_size = this->data_size();
 541   unsigned char* const oview = of->get_output_view(off, oview_size);
 542
 543   unsigned char* pov = oview;
 544   for (typename Relocs::const_iterator p = this->relocs_.begin();
 545        p != this->relocs_.end();
 546        ++p)
 547     {
 548       p->write(pov);
 549       pov += reloc_size;
 550     }
 551
 552   gold_assert(pov - oview == oview_size);
 553
 554   of->write_output_view(off, oview_size, oview);
 555
 556   // We no longer need the relocation entries.
 557   this->relocs_.clear();
 558 }
 559
 560 // Output_data_got::Got_entry methods.
 561
 562 // Write out the entry.
 563
 564 template<int size, bool big_endian>
 565 void
 566 Output_data_got<size, big_endian>::Got_entry::write(
 567     const General_options* options,
 568     unsigned char* pov) const
 569 {
 570   Valtype val = 0;
 571
 572   switch (this->local_sym_index_)
 573     {
 574     case GSYM_CODE:
 575       {
 576         Symbol* gsym = this->u_.gsym;
 577
 578         // If the symbol is resolved locally, we need to write out its
 579         // value.  Otherwise we just write zero.  The target code is
 580         // responsible for creating a relocation entry to fill in the
 581         // value at runtime.
 582         if (gsym->final_value_is_known(options))
 583           {
 584             Sized_symbol<size>* sgsym;
 585             // This cast is a bit ugly.  We don't want to put a
 586             // virtual method in Symbol, because we want Symbol to be
 587             // as small as possible.
 588             sgsym = static_cast<Sized_symbol<size>*>(gsym);
 589             val = sgsym->value();
 590           }
 591       }
 592       break;
 593
 594     case CONSTANT_CODE:
 595       val = this->u_.constant;
 596       break;
 597
 598     default:
 599       gold_unreachable();
 600     }
 601
 602   elfcpp::Swap<size, big_endian>::writeval(pov, val);
 603 }
 604
 605 // Output_data_got methods.
 606
 607 // Add an entry for a global symbol to the GOT.  This returns true if
 608 // this is a new GOT entry, false if the symbol already had a GOT
 609 // entry.
 610
 611 template<int size, bool big_endian>
 612 bool
 613 Output_data_got<size, big_endian>::add_global(Symbol* gsym)
 614 {
 615   if (gsym->has_got_offset())
 616     return false;
 617
 618   this->entries_.push_back(Got_entry(gsym));
 619   this->set_got_size();
 620   gsym->set_got_offset(this->last_got_offset());
 621   return true;
 622 }
 623
 624 // Write out the GOT.
 625
 626 template<int size, bool big_endian>
 627 void
 628 Output_data_got<size, big_endian>::do_write(Output_file* of)
 629 {
 630   const int add = size / 8;
 631
 632   const off_t off = this->offset();
 633   const off_t oview_size = this->data_size();
 634   unsigned char* const oview = of->get_output_view(off, oview_size);
 635
 636   unsigned char* pov = oview;
 637   for (typename Got_entries::const_iterator p = this->entries_.begin();
 638        p != this->entries_.end();
 639        ++p)
 640     {
 641       p->write(this->options_, pov);
 642       pov += add;
 643     }
 644
 645   gold_assert(pov - oview == oview_size);
 646
 647   of->write_output_view(off, oview_size, oview);
 648
 649   // We no longer need the GOT entries.
 650   this->entries_.clear();
 651 }
 652
 653 // Output_data_dynamic::Dynamic_entry methods.
 654
 655 // Write out the entry.
 656
 657 template<int size, bool big_endian>
 658 void
 659 Output_data_dynamic::Dynamic_entry::write(
 660     unsigned char* pov,
 661     const Stringpool* pool
 662     ACCEPT_SIZE_ENDIAN) const
 663 {
 664   typename elfcpp::Elf_types<size>::Elf_WXword val;
 665   switch (this->classification_)
 666     {
 667     case DYNAMIC_NUMBER:
 668       val = this->u_.val;
 669       break;
 670
 671     case DYNAMIC_SECTION_ADDRESS:
 672       val = this->u_.od->address();
 673       break;
 674
 675     case DYNAMIC_SECTION_SIZE:
 676       val = this->u_.od->data_size();
 677       break;
 678
 679     case DYNAMIC_SYMBOL:
 680       {
 681         const Sized_symbol<size>* s =
 682           static_cast<const Sized_symbol<size>*>(this->u_.sym);
 683         val = s->value();
 684       }
 685       break;
 686
 687     case DYNAMIC_STRING:
 688       val = pool->get_offset(this->u_.str);
 689       break;
 690
 691     default:
 692       gold_unreachable();
 693     }
 694
 695   elfcpp::Dyn_write<size, big_endian> dw(pov);
 696   dw.put_d_tag(this->tag_);
 697   dw.put_d_val(val);
 698 }
 699
 700 // Output_data_dynamic methods.
 701
 702 // Adjust the output section to set the entry size.
 703
 704 void
 705 Output_data_dynamic::do_adjust_output_section(Output_section* os)
 706 {
 707   if (this->target_->get_size() == 32)
 708     os->set_entsize(elfcpp::Elf_sizes<32>::dyn_size);
 709   else if (this->target_->get_size() == 64)
 710     os->set_entsize(elfcpp::Elf_sizes<64>::dyn_size);
 711   else
 712     gold_unreachable();
 713 }
 714
 715 // Set the final data size.
 716
 717 void
 718 Output_data_dynamic::do_set_address(uint64_t, off_t)
 719 {
 720   // Add the terminating entry.
 721   this->add_constant(elfcpp::DT_NULL, 0);
 722
 723   int dyn_size;
 724   if (this->target_->get_size() == 32)
 725     dyn_size = elfcpp::Elf_sizes<32>::dyn_size;
 726   else if (this->target_->get_size() == 64)
 727     dyn_size = elfcpp::Elf_sizes<64>::dyn_size;
 728   else
 729     gold_unreachable();
 730   this->set_data_size(this->entries_.size() * dyn_size);
 731 }
 732
 733 // Write out the dynamic entries.
 734
 735 void
 736 Output_data_dynamic::do_write(Output_file* of)
 737 {
 738   if (this->target_->get_size() == 32)
 739     {
 740       if (this->target_->is_big_endian())
 741         this->sized_write<32, true>(of);
 742       else
 743         this->sized_write<32, false>(of);
 744     }
 745   else if (this->target_->get_size() == 64)
 746     {
 747       if (this->target_->is_big_endian())
 748         this->sized_write<64, true>(of);
 749       else
 750         this->sized_write<64, false>(of);
 751     }
 752   else
 753     gold_unreachable();
 754 }
 755
 756 template<int size, bool big_endian>
 757 void
 758 Output_data_dynamic::sized_write(Output_file* of)
 759 {
 760   const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size;
 761
 762   const off_t offset = this->offset();
 763   const off_t oview_size = this->data_size();
 764   unsigned char* const oview = of->get_output_view(offset, oview_size);
 765
 766   unsigned char* pov = oview;
 767   for (typename Dynamic_entries::const_iterator p = this->entries_.begin();
 768        p != this->entries_.end();
 769        ++p)
 770     {
 771       p->write SELECT_SIZE_ENDIAN_NAME(size, big_endian)(
 772           pov, this->pool_ SELECT_SIZE_ENDIAN(size, big_endian));
 773       pov += dyn_size;
 774     }
 775
 776   gold_assert(pov - oview == oview_size);
 777
 778   of->write_output_view(offset, oview_size, oview);
 779
 780   // We no longer need the dynamic entries.
 781   this->entries_.clear();
 782 }
 783
 784 // Output_section::Input_section methods.
 785
 786 // Return the data size.  For an input section we store the size here.
 787 // For an Output_section_data, we have to ask it for the size.
 788
 789 off_t
 790 Output_section::Input_section::data_size() const
 791 {
 792   if (this->is_input_section())
 793     return this->data_size_;
 794   else
 795     return this->u_.posd->data_size();
 796 }
 797
 798 // Set the address and file offset.
 799
 800 void
 801 Output_section::Input_section::set_address(uint64_t addr, off_t off,
 802                                            off_t secoff)
 803 {
 804   if (this->is_input_section())
 805     this->u_.object->set_section_offset(this->shndx_, off - secoff);
 806   else
 807     this->u_.posd->set_address(addr, off);
 808 }
 809
 810 // Write out the data.  We don't have to do anything for an input
 811 // section--they are handled via Object::relocate--but this is where
 812 // we write out the data for an Output_section_data.
 813
 814 void
 815 Output_section::Input_section::write(Output_file* of)
 816 {
 817   if (!this->is_input_section())
 818     this->u_.posd->write(of);
 819 }
 820
 821 // Output_section methods.
 822
 823 // Construct an Output_section.  NAME will point into a Stringpool.
 824
 825 Output_section::Output_section(const char* name, elfcpp::Elf_Word type,
 826                                elfcpp::Elf_Xword flags, bool may_add_data)
 827   : name_(name),
 828     addralign_(0),
 829     entsize_(0),
 830     link_section_(NULL),
 831     link_(0),
 832     info_section_(NULL),
 833     info_(0),
 834     type_(type),
 835     flags_(flags),
 836     out_shndx_(0),
 837     symtab_index_(0),
 838     dynsym_index_(0),
 839     input_sections_(),
 840     first_input_offset_(0),
 841     may_add_data_(may_add_data),
 842     needs_symtab_index_(false),
 843     needs_dynsym_index_(false),
 844     should_link_to_symtab_(false),
 845     should_link_to_dynsym_(false)
 846 {
 847 }
 848
 849 Output_section::~Output_section()
 850 {
 851 }
 852
 853 // Set the entry size.
 854
 855 void
 856 Output_section::set_entsize(uint64_t v)
 857 {
 858   if (this->entsize_ == 0)
 859     this->entsize_ = v;
 860   else
 861     gold_assert(this->entsize_ == v);
 862 }
 863
 864 // Add the input section SHNDX, with header SHDR, named SECNAME, in
 865 // OBJECT, to the Output_section.  Return the offset of the input
 866 // section within the output section.  We don't always keep track of
 867 // input sections for an Output_section.  Instead, each Object keeps
 868 // track of the Output_section for each of its input sections.
 869
 870 template<int size, bool big_endian>
 871 off_t
 872 Output_section::add_input_section(Relobj* object, unsigned int shndx,
 873                                   const char* secname,
 874                                   const elfcpp::Shdr<size, big_endian>& shdr)
 875 {
 876   gold_assert(this->may_add_data_);
 877
 878   elfcpp::Elf_Xword addralign = shdr.get_sh_addralign();
 879   if ((addralign & (addralign - 1)) != 0)
 880     {
 881       fprintf(stderr, _("%s: %s: invalid alignment %lu for section \"%s\"\n"),
 882               program_name, object->name().c_str(),
 883               static_cast<unsigned long>(addralign), secname);
 884       gold_exit(false);
 885     }
 886
 887   if (addralign > this->addralign_)
 888     this->addralign_ = addralign;
 889
 890   off_t ssize = this->data_size();
 891   ssize = align_address(ssize, addralign);
 892   this->set_data_size(ssize + shdr.get_sh_size());
 893
 894   // We need to keep track of this section if we are already keeping
 895   // track of sections, or if we are relaxing.  FIXME: Add test for
 896   // relaxing.
 897   if (! this->input_sections_.empty())
 898     this->input_sections_.push_back(Input_section(object, shndx,
 899                                                   shdr.get_sh_size(),
 900                                                   addralign));
 901
 902   return ssize;
 903 }
 904
 905 // Add arbitrary data to an output section.
 906
 907 void
 908 Output_section::add_output_section_data(Output_section_data* posd)
 909 {
 910   gold_assert(this->may_add_data_);
 911
 912   if (this->input_sections_.empty())
 913     this->first_input_offset_ = this->data_size();
 914
 915   this->input_sections_.push_back(Input_section(posd));
 916
 917   uint64_t addralign = posd->addralign();
 918   if (addralign > this->addralign_)
 919     this->addralign_ = addralign;
 920
 921   posd->set_output_section(this);
 922 }
 923
 924 // Set the address of an Output_section.  This is where we handle
 925 // setting the addresses of any Output_section_data objects.
 926
 927 void
 928 Output_section::do_set_address(uint64_t address, off_t startoff)
 929 {
 930   if (this->input_sections_.empty())
 931     return;
 932
 933   off_t off = startoff + this->first_input_offset_;
 934   for (Input_section_list::iterator p = this->input_sections_.begin();
 935        p != this->input_sections_.end();
 936        ++p)
 937     {
 938       off = align_address(off, p->addralign());
 939       p->set_address(address + (off - startoff), off, startoff);
 940       off += p->data_size();
 941     }
 942
 943   this->set_data_size(off - startoff);
 944 }
 945
 946 // Write the section header to *OSHDR.
 947
 948 template<int size, bool big_endian>
 949 void
 950 Output_section::write_header(const Layout* layout,
 951                              const Stringpool* secnamepool,
 952                              elfcpp::Shdr_write<size, big_endian>* oshdr) const
 953 {
 954   oshdr->put_sh_name(secnamepool->get_offset(this->name_));
 955   oshdr->put_sh_type(this->type_);
 956   oshdr->put_sh_flags(this->flags_);
 957   oshdr->put_sh_addr(this->address());
 958   oshdr->put_sh_offset(this->offset());
 959   oshdr->put_sh_size(this->data_size());
 960   if (this->link_section_ != NULL)
 961     oshdr->put_sh_link(this->link_section_->out_shndx());
 962   else if (this->should_link_to_symtab_)
 963     oshdr->put_sh_link(layout->symtab_section()->out_shndx());
 964   else if (this->should_link_to_dynsym_)
 965     oshdr->put_sh_link(layout->dynsym_section()->out_shndx());
 966   else
 967     oshdr->put_sh_link(this->link_);
 968   if (this->info_section_ != NULL)
 969     oshdr->put_sh_info(this->info_section_->out_shndx());
 970   else
 971     oshdr->put_sh_info(this->info_);
 972   oshdr->put_sh_addralign(this->addralign_);
 973   oshdr->put_sh_entsize(this->entsize_);
 974 }
 975
 976 // Write out the data.  For input sections the data is written out by
 977 // Object::relocate, but we have to handle Output_section_data objects
 978 // here.
 979
 980 void
 981 Output_section::do_write(Output_file* of)
 982 {
 983   for (Input_section_list::iterator p = this->input_sections_.begin();
 984        p != this->input_sections_.end();
 985        ++p)
 986     p->write(of);
 987 }
 988
 989 // Output segment methods.
 990
 991 Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags)
 992   : output_data_(),
 993     output_bss_(),
 994     vaddr_(0),
 995     paddr_(0),
 996     memsz_(0),
 997     align_(0),
 998     offset_(0),
 999     filesz_(0),
1000     type_(type),
1001     flags_(flags),
1002     is_align_known_(false)
1003 {
1004 }
1005
1006 // Add an Output_section to an Output_segment.
1007
1008 void
1009 Output_segment::add_output_section(Output_section* os,
1010                                    elfcpp::Elf_Word seg_flags,
1011                                    bool front)
1012 {
1013   gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0);
1014   gold_assert(!this->is_align_known_);
1015
1016   // Update the segment flags.
1017   this->flags_ |= seg_flags;
1018
1019   Output_segment::Output_data_list* pdl;
1020   if (os->type() == elfcpp::SHT_NOBITS)
1021     pdl = &this->output_bss_;
1022   else
1023     pdl = &this->output_data_;
1024
1025   // So that PT_NOTE segments will work correctly, we need to ensure
1026   // that all SHT_NOTE sections are adjacent.  This will normally
1027   // happen automatically, because all the SHT_NOTE input sections
1028   // will wind up in the same output section.  However, it is possible
1029   // for multiple SHT_NOTE input sections to have different section
1030   // flags, and thus be in different output sections, but for the
1031   // different section flags to map into the same segment flags and
1032   // thus the same output segment.
1033
1034   // Note that while there may be many input sections in an output
1035   // section, there are normally only a few output sections in an
1036   // output segment.  This loop is expected to be fast.
1037
1038   if (os->type() == elfcpp::SHT_NOTE && !pdl->empty())
1039     {
1040       Output_segment::Output_data_list::iterator p = pdl->end();
1041       do
1042         {
1043           --p;
1044           if ((*p)->is_section_type(elfcpp::SHT_NOTE))
1045             {
1046               // We don't worry about the FRONT parameter.
1047               ++p;
1048               pdl->insert(p, os);
1049               return;
1050             }
1051         }
1052       while (p != pdl->begin());
1053     }
1054
1055   // Similarly, so that PT_TLS segments will work, we need to group
1056   // SHF_TLS sections.  An SHF_TLS/SHT_NOBITS section is a special
1057   // case: we group the SHF_TLS/SHT_NOBITS sections right after the
1058   // SHF_TLS/SHT_PROGBITS sections.  This lets us set up PT_TLS
1059   // correctly.
1060   if ((os->flags() & elfcpp::SHF_TLS) != 0 && !this->output_data_.empty())
1061     {
1062       pdl = &this->output_data_;
1063       bool nobits = os->type() == elfcpp::SHT_NOBITS;
1064       bool sawtls = false;
1065       Output_segment::Output_data_list::iterator p = pdl->end();
1066       do
1067         {
1068           --p;
1069           bool insert;
1070           if ((*p)->is_section_flag_set(elfcpp::SHF_TLS))
1071             {
1072               sawtls = true;
1073               // Put a NOBITS section after the first TLS section.
1074               // But a PROGBITS section after the first TLS/PROGBITS
1075               // section.
1076               insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS);
1077             }
1078           else
1079             {
1080               // If we've gone past the TLS sections, but we've seen a
1081               // TLS section, then we need to insert this section now.
1082               insert = sawtls;
1083             }
1084
1085           if (insert)
1086             {
1087               // We don't worry about the FRONT parameter.
1088               ++p;
1089               pdl->insert(p, os);
1090               return;
1091             }
1092         }
1093       while (p != pdl->begin());
1094
1095       // There are no TLS sections yet; put this one at the requested
1096       // location in the section list.
1097     }
1098
1099   if (front)
1100     pdl->push_front(os);
1101   else
1102     pdl->push_back(os);
1103 }
1104
1105 // Add an Output_data (which is not an Output_section) to the start of
1106 // a segment.
1107
1108 void
1109 Output_segment::add_initial_output_data(Output_data* od)
1110 {
1111   gold_assert(!this->is_align_known_);
1112   this->output_data_.push_front(od);
1113 }
1114
1115 // Return the maximum alignment of the Output_data in Output_segment.
1116 // Once we compute this, we prohibit new sections from being added.
1117
1118 uint64_t
1119 Output_segment::addralign()
1120 {
1121   if (!this->is_align_known_)
1122     {
1123       uint64_t addralign;
1124
1125       addralign = Output_segment::maximum_alignment(&this->output_data_);
1126       if (addralign > this->align_)
1127         this->align_ = addralign;
1128
1129       addralign = Output_segment::maximum_alignment(&this->output_bss_);
1130       if (addralign > this->align_)
1131         this->align_ = addralign;
1132
1133       this->is_align_known_ = true;
1134     }
1135
1136   return this->align_;
1137 }
1138
1139 // Return the maximum alignment of a list of Output_data.
1140
1141 uint64_t
1142 Output_segment::maximum_alignment(const Output_data_list* pdl)
1143 {
1144   uint64_t ret = 0;
1145   for (Output_data_list::const_iterator p = pdl->begin();
1146        p != pdl->end();
1147        ++p)
1148     {
1149       uint64_t addralign = (*p)->addralign();
1150       if (addralign > ret)
1151         ret = addralign;
1152     }
1153   return ret;
1154 }
1155
1156 // Set the section addresses for an Output_segment.  ADDR is the
1157 // address and *POFF is the file offset.  Set the section indexes
1158 // starting with *PSHNDX.  Return the address of the immediately
1159 // following segment.  Update *POFF and *PSHNDX.
1160
1161 uint64_t
1162 Output_segment::set_section_addresses(uint64_t addr, off_t* poff,
1163                                       unsigned int* pshndx)
1164 {
1165   gold_assert(this->type_ == elfcpp::PT_LOAD);
1166
1167   this->vaddr_ = addr;
1168   this->paddr_ = addr;
1169
1170   off_t orig_off = *poff;
1171   this->offset_ = orig_off;
1172
1173   *poff = align_address(*poff, this->addralign());
1174
1175   addr = this->set_section_list_addresses(&this->output_data_, addr, poff,
1176                                           pshndx);
1177   this->filesz_ = *poff - orig_off;
1178
1179   off_t off = *poff;
1180
1181   uint64_t ret = this->set_section_list_addresses(&this->output_bss_, addr,
1182                                                   poff, pshndx);
1183   this->memsz_ = *poff - orig_off;
1184
1185   // Ignore the file offset adjustments made by the BSS Output_data
1186   // objects.
1187   *poff = off;
1188
1189   return ret;
1190 }
1191
1192 // Set the addresses in a list of Output_data structures.
1193
1194 uint64_t
1195 Output_segment::set_section_list_addresses(Output_data_list* pdl,
1196                                            uint64_t addr, off_t* poff,
1197                                            unsigned int* pshndx)
1198 {
1199   off_t startoff = *poff;
1200
1201   off_t off = startoff;
1202   for (Output_data_list::iterator p = pdl->begin();
1203        p != pdl->end();
1204        ++p)
1205     {
1206       off = align_address(off, (*p)->addralign());
1207       (*p)->set_address(addr + (off - startoff), off);
1208
1209       // Unless this is a PT_TLS segment, we want to ignore the size
1210       // of a SHF_TLS/SHT_NOBITS section.  Such a section does not
1211       // affect the size of a PT_LOAD segment.
1212       if (this->type_ == elfcpp::PT_TLS
1213           || !(*p)->is_section_flag_set(elfcpp::SHF_TLS)
1214           || !(*p)->is_section_type(elfcpp::SHT_NOBITS))
1215         off += (*p)->data_size();
1216
1217       if ((*p)->is_section())
1218         {
1219           (*p)->set_out_shndx(*pshndx);
1220           ++*pshndx;
1221         }
1222     }
1223
1224   *poff = off;
1225   return addr + (off - startoff);
1226 }
1227
1228 // For a non-PT_LOAD segment, set the offset from the sections, if
1229 // any.
1230
1231 void
1232 Output_segment::set_offset()
1233 {
1234   gold_assert(this->type_ != elfcpp::PT_LOAD);
1235
1236   if (this->output_data_.empty() && this->output_bss_.empty())
1237     {
1238       this->vaddr_ = 0;
1239       this->paddr_ = 0;
1240       this->memsz_ = 0;
1241       this->align_ = 0;
1242       this->offset_ = 0;
1243       this->filesz_ = 0;
1244       return;
1245     }
1246
1247   const Output_data* first;
1248   if (this->output_data_.empty())
1249     first = this->output_bss_.front();
1250   else
1251     first = this->output_data_.front();
1252   this->vaddr_ = first->address();
1253   this->paddr_ = this->vaddr_;
1254   this->offset_ = first->offset();
1255
1256   if (this->output_data_.empty())
1257     this->filesz_ = 0;
1258   else
1259     {
1260       const Output_data* last_data = this->output_data_.back();
1261       this->filesz_ = (last_data->address()
1262                        + last_data->data_size()
1263                        - this->vaddr_);
1264     }
1265
1266   const Output_data* last;
1267   if (this->output_bss_.empty())
1268     last = this->output_data_.back();
1269   else
1270     last = this->output_bss_.back();
1271   this->memsz_ = (last->address()
1272                   + last->data_size()
1273                   - this->vaddr_);
1274 }
1275
1276 // Return the number of Output_sections in an Output_segment.
1277
1278 unsigned int
1279 Output_segment::output_section_count() const
1280 {
1281   return (this->output_section_count_list(&this->output_data_)
1282           + this->output_section_count_list(&this->output_bss_));
1283 }
1284
1285 // Return the number of Output_sections in an Output_data_list.
1286
1287 unsigned int
1288 Output_segment::output_section_count_list(const Output_data_list* pdl) const
1289 {
1290   unsigned int count = 0;
1291   for (Output_data_list::const_iterator p = pdl->begin();
1292        p != pdl->end();
1293        ++p)
1294     {
1295       if ((*p)->is_section())
1296         ++count;
1297     }
1298   return count;
1299 }
1300
1301 // Write the segment data into *OPHDR.
1302
1303 template<int size, bool big_endian>
1304 void
1305 Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr)
1306 {
1307   ophdr->put_p_type(this->type_);
1308   ophdr->put_p_offset(this->offset_);
1309   ophdr->put_p_vaddr(this->vaddr_);
1310   ophdr->put_p_paddr(this->paddr_);
1311   ophdr->put_p_filesz(this->filesz_);
1312   ophdr->put_p_memsz(this->memsz_);
1313   ophdr->put_p_flags(this->flags_);
1314   ophdr->put_p_align(this->addralign());
1315 }
1316
1317 // Write the section headers into V.
1318
1319 template<int size, bool big_endian>
1320 unsigned char*
1321 Output_segment::write_section_headers(const Layout* layout,
1322                                       const Stringpool* secnamepool,
1323                                       unsigned char* v,
1324                                       unsigned int *pshndx
1325                                       ACCEPT_SIZE_ENDIAN) const
1326 {
1327   // Every section that is attached to a segment must be attached to a
1328   // PT_LOAD segment, so we only write out section headers for PT_LOAD
1329   // segments.
1330   if (this->type_ != elfcpp::PT_LOAD)
1331     return v;
1332
1333   v = this->write_section_headers_list
1334       SELECT_SIZE_ENDIAN_NAME(size, big_endian) (
1335           layout, secnamepool, &this->output_data_, v, pshndx
1336           SELECT_SIZE_ENDIAN(size, big_endian));
1337   v = this->write_section_headers_list
1338       SELECT_SIZE_ENDIAN_NAME(size, big_endian) (
1339           layout, secnamepool, &this->output_bss_, v, pshndx
1340           SELECT_SIZE_ENDIAN(size, big_endian));
1341   return v;
1342 }
1343
1344 template<int size, bool big_endian>
1345 unsigned char*
1346 Output_segment::write_section_headers_list(const Layout* layout,
1347                                            const Stringpool* secnamepool,
1348                                            const Output_data_list* pdl,
1349                                            unsigned char* v,
1350                                            unsigned int* pshndx
1351                                            ACCEPT_SIZE_ENDIAN) const
1352 {
1353   const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
1354   for (Output_data_list::const_iterator p = pdl->begin();
1355        p != pdl->end();
1356        ++p)
1357     {
1358       if ((*p)->is_section())
1359         {
1360           const Output_section* ps = static_cast<const Output_section*>(*p);
1361           gold_assert(*pshndx == ps->out_shndx());
1362           elfcpp::Shdr_write<size, big_endian> oshdr(v);
1363           ps->write_header(layout, secnamepool, &oshdr);
1364           v += shdr_size;
1365           ++*pshndx;
1366         }
1367     }
1368   return v;
1369 }
1370
1371 // Output_file methods.
1372
1373 Output_file::Output_file(const General_options& options)
1374   : options_(options),
1375     name_(options.output_file_name()),
1376     o_(-1),
1377     file_size_(0),
1378     base_(NULL)
1379 {
1380 }
1381
1382 // Open the output file.
1383
1384 void
1385 Output_file::open(off_t file_size)
1386 {
1387   this->file_size_ = file_size;
1388
1389   int mode = this->options_.is_relocatable() ? 0666 : 0777;
1390   int o = ::open(this->name_, O_RDWR | O_CREAT | O_TRUNC, mode);
1391   if (o < 0)
1392     {
1393       fprintf(stderr, _("%s: %s: open: %s\n"),
1394               program_name, this->name_, strerror(errno));
1395       gold_exit(false);
1396     }
1397   this->o_ = o;
1398
1399   // Write out one byte to make the file the right size.
1400   if (::lseek(o, file_size - 1, SEEK_SET) < 0)
1401     {
1402       fprintf(stderr, _("%s: %s: lseek: %s\n"),
1403               program_name, this->name_, strerror(errno));
1404       gold_exit(false);
1405     }
1406   char b = 0;
1407   if (::write(o, &b, 1) != 1)
1408     {
1409       fprintf(stderr, _("%s: %s: write: %s\n"),
1410               program_name, this->name_, strerror(errno));
1411       gold_exit(false);
1412     }
1413
1414   // Map the file into memory.
1415   void* base = ::mmap(NULL, file_size, PROT_READ | PROT_WRITE,
1416                       MAP_SHARED, o, 0);
1417   if (base == MAP_FAILED)
1418     {
1419       fprintf(stderr, _("%s: %s: mmap: %s\n"),
1420               program_name, this->name_, strerror(errno));
1421       gold_exit(false);
1422     }
1423   this->base_ = static_cast<unsigned char*>(base);
1424 }
1425
1426 // Close the output file.
1427
1428 void
1429 Output_file::close()
1430 {
1431   if (::munmap(this->base_, this->file_size_) < 0)
1432     {
1433       fprintf(stderr, _("%s: %s: munmap: %s\n"),
1434               program_name, this->name_, strerror(errno));
1435       gold_exit(false);
1436     }
1437   this->base_ = NULL;
1438
1439   if (::close(this->o_) < 0)
1440     {
1441       fprintf(stderr, _("%s: %s: close: %s\n"),
1442               program_name, this->name_, strerror(errno));
1443       gold_exit(false);
1444     }
1445   this->o_ = -1;
1446 }
1447
1448 // Instantiate the templates we need.  We could use the configure
1449 // script to restrict this to only the ones for implemented targets.
1450
1451 template
1452 off_t
1453 Output_section::add_input_section<32, false>(
1454     Relobj* object,
1455     unsigned int shndx,
1456     const char* secname,
1457     const elfcpp::Shdr<32, false>& shdr);
1458
1459 template
1460 off_t
1461 Output_section::add_input_section<32, true>(
1462     Relobj* object,
1463     unsigned int shndx,
1464     const char* secname,
1465     const elfcpp::Shdr<32, true>& shdr);
1466
1467 template
1468 off_t
1469 Output_section::add_input_section<64, false>(
1470     Relobj* object,
1471     unsigned int shndx,
1472     const char* secname,
1473     const elfcpp::Shdr<64, false>& shdr);
1474
1475 template
1476 off_t
1477 Output_section::add_input_section<64, true>(
1478     Relobj* object,
1479     unsigned int shndx,
1480     const char* secname,
1481     const elfcpp::Shdr<64, true>& shdr);
1482
1483 template
1484 class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>;
1485
1486 template
1487 class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>;
1488
1489 template
1490 class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>;
1491
1492 template
1493 class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>;
1494
1495 template
1496 class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>;
1497
1498 template
1499 class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>;
1500
1501 template
1502 class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>;
1503
1504 template
1505 class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>;
1506
1507 template
1508 class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>;
1509
1510 template
1511 class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>;
1512
1513 template
1514 class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>;
1515
1516 template
1517 class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>;
1518
1519 template
1520 class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>;
1521
1522 template
1523 class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>;
1524
1525 template
1526 class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>;
1527
1528 template
1529 class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>;
1530
1531 template
1532 class Output_data_got<32, false>;
1533
1534 template
1535 class Output_data_got<32, true>;
1536
1537 template
1538 class Output_data_got<64, false>;
1539
1540 template
1541 class Output_data_got<64, true>;
1542
1543 } // End namespace gold.