1 // reloc.cc -- relocate input files for gold.
3 // Copyright (C) 2006-2015 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
27 #include "workqueue.h"
33 #include "target-reloc.h"
36 #include "compressed_output.h"
37 #include "incremental.h"
42 // Read_relocs methods.
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.
49 Read_relocs::is_runnable()
51 return this->object_->is_locked() ? this->object_->token() : NULL;
57 Read_relocs::locks(Task_locker* tl)
59 Task_token* token = this->object_->token();
64 // Read the relocations and then start a Scan_relocs_task.
67 Read_relocs::run(Workqueue* workqueue)
69 Read_relocs_data* rd = new Read_relocs_data;
70 this->object_->read_relocs(rd);
71 this->object_->set_relocs_data(rd);
72 this->object_->release();
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.
77 if (parameters->options().gc_sections()
78 || parameters->options().icf_enabled())
80 workqueue->queue_next(new Gc_process_relocs(this->symtab_,
84 this->next_blocker_));
88 workqueue->queue_next(new Scan_relocs(this->symtab_, this->layout_,
91 this->next_blocker_));
95 // Return a debugging name for the task.
98 Read_relocs::get_name() const
100 return "Read_relocs " + this->object_->name();
103 // Gc_process_relocs methods.
105 Gc_process_relocs::~Gc_process_relocs()
107 if (this->this_blocker_ != NULL)
108 delete this->this_blocker_;
111 // These tasks process the relocations read by Read_relocs and
112 // determine which sections are referenced and which are garbage.
113 // This task is done only when --gc-sections is used. This is blocked
114 // by THIS_BLOCKER_. It unblocks NEXT_BLOCKER_.
117 Gc_process_relocs::is_runnable()
119 if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
120 return this->this_blocker_;
121 if (this->object_->is_locked())
122 return this->object_->token();
127 Gc_process_relocs::locks(Task_locker* tl)
129 tl->add(this, this->object_->token());
130 tl->add(this, this->next_blocker_);
134 Gc_process_relocs::run(Workqueue*)
136 this->object_->gc_process_relocs(this->symtab_, this->layout_, this->rd_);
137 this->object_->release();
140 // Return a debugging name for the task.
143 Gc_process_relocs::get_name() const
145 return "Gc_process_relocs " + this->object_->name();
148 // Scan_relocs methods.
150 Scan_relocs::~Scan_relocs()
152 if (this->this_blocker_ != NULL)
153 delete this->this_blocker_;
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
162 Scan_relocs::is_runnable()
164 if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
165 return this->this_blocker_;
166 if (this->object_->is_locked())
167 return this->object_->token();
171 // Return the locks we hold: one on the file, one on the symbol table
175 Scan_relocs::locks(Task_locker* tl)
177 Task_token* token = this->object_->token();
179 tl->add(this, token);
180 tl->add(this, this->next_blocker_);
186 Scan_relocs::run(Workqueue*)
188 this->object_->scan_relocs(this->symtab_, this->layout_, this->rd_);
191 this->object_->release();
194 // Return a debugging name for the task.
197 Scan_relocs::get_name() const
199 return "Scan_relocs " + this->object_->name();
202 // Relocate_task methods.
204 // We may have to wait for the output sections to be written.
207 Relocate_task::is_runnable()
209 if (this->object_->relocs_must_follow_section_writes()
210 && this->output_sections_blocker_->is_blocked())
211 return this->output_sections_blocker_;
213 if (this->object_->is_locked())
214 return this->object_->token();
219 // We want to lock the file while we run. We want to unblock
220 // INPUT_SECTIONS_BLOCKER and FINAL_BLOCKER when we are done.
221 // INPUT_SECTIONS_BLOCKER may be NULL.
224 Relocate_task::locks(Task_locker* tl)
226 if (this->input_sections_blocker_ != NULL)
227 tl->add(this, this->input_sections_blocker_);
228 tl->add(this, this->final_blocker_);
229 Task_token* token = this->object_->token();
231 tl->add(this, token);
237 Relocate_task::run(Workqueue*)
239 this->object_->relocate(this->symtab_, this->layout_, this->of_);
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();
245 this->object_->release();
248 // Return a debugging name for the task.
251 Relocate_task::get_name() const
253 return "Relocate_task " + this->object_->name();
256 // Read the relocs and local symbols from the object file and store
257 // the information in RD.
259 template<int size, bool big_endian>
261 Sized_relobj_file<size, big_endian>::do_read_relocs(Read_relocs_data* rd)
265 unsigned int shnum = this->shnum();
269 rd->relocs.reserve(shnum / 2);
271 const Output_sections& out_sections(this->output_sections());
272 const std::vector<Address>& out_offsets(this->section_offsets());
274 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
275 shnum * This::shdr_size,
277 // Skip the first, dummy, section.
278 const unsigned char* ps = pshdrs + This::shdr_size;
279 for (unsigned int i = 1; i < shnum; ++i, ps += This::shdr_size)
281 typename This::Shdr shdr(ps);
283 unsigned int sh_type = shdr.get_sh_type();
284 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
287 unsigned int shndx = this->adjust_shndx(shdr.get_sh_info());
290 this->error(_("relocation section %u has bad info %u"),
295 Output_section* os = out_sections[shndx];
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
302 // GOT and PLT entries. So we skip them unless this is a
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?
306 typename This::Shdr secshdr(pshdrs + shndx * This::shdr_size);
307 bool is_section_allocated = ((secshdr.get_sh_flags() & elfcpp::SHF_ALLOC)
309 if (!is_section_allocated
310 && !parameters->options().relocatable()
311 && !parameters->options().emit_relocs()
312 && !parameters->incremental())
315 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
317 this->error(_("relocation section %u uses unexpected "
319 i, this->adjust_shndx(shdr.get_sh_link()));
323 off_t sh_size = shdr.get_sh_size();
328 unsigned int reloc_size;
329 if (sh_type == elfcpp::SHT_REL)
330 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
332 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
333 if (reloc_size != shdr.get_sh_entsize())
335 this->error(_("unexpected entsize for reloc section %u: %lu != %u"),
336 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
341 size_t reloc_count = sh_size / reloc_size;
342 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
344 this->error(_("reloc section %u size %lu uneven"),
345 i, static_cast<unsigned long>(sh_size));
349 rd->relocs.push_back(Section_relocs());
350 Section_relocs& sr(rd->relocs.back());
352 sr.data_shndx = shndx;
353 sr.contents = this->get_lasting_view(shdr.get_sh_offset(), sh_size,
355 sr.sh_type = sh_type;
356 sr.reloc_count = reloc_count;
357 sr.output_section = os;
358 sr.needs_special_offset_handling = out_offsets[shndx] == invalid_address;
359 sr.is_data_section_allocated = is_section_allocated;
362 // Read the local symbols.
363 gold_assert(this->symtab_shndx_ != -1U);
364 if (this->symtab_shndx_ == 0 || this->local_symbol_count_ == 0)
365 rd->local_symbols = NULL;
368 typename This::Shdr symtabshdr(pshdrs
369 + this->symtab_shndx_ * This::shdr_size);
370 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
371 const int sym_size = This::sym_size;
372 const unsigned int loccount = this->local_symbol_count_;
373 gold_assert(loccount == symtabshdr.get_sh_info());
374 off_t locsize = loccount * sym_size;
375 rd->local_symbols = this->get_lasting_view(symtabshdr.get_sh_offset(),
376 locsize, true, true);
380 // Process the relocs to generate mappings from source sections to referenced
381 // sections. This is used during garbage collection to determine garbage
384 template<int size, bool big_endian>
386 Sized_relobj_file<size, big_endian>::do_gc_process_relocs(Symbol_table* symtab,
388 Read_relocs_data* rd)
390 Sized_target<size, big_endian>* target =
391 parameters->sized_target<size, big_endian>();
393 const unsigned char* local_symbols;
394 if (rd->local_symbols == NULL)
395 local_symbols = NULL;
397 local_symbols = rd->local_symbols->data();
399 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
400 p != rd->relocs.end();
403 if (!parameters->options().relocatable())
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)
409 target->gc_process_relocs(symtab, layout, this,
410 p->data_shndx, p->sh_type,
411 p->contents->data(), p->reloc_count,
413 p->needs_special_offset_handling,
414 this->local_symbol_count_,
421 // Scan the relocs and adjust the symbol table. This looks for
422 // relocations which require GOT/PLT/COPY relocations.
424 template<int size, bool big_endian>
426 Sized_relobj_file<size, big_endian>::do_scan_relocs(Symbol_table* symtab,
428 Read_relocs_data* rd)
430 Sized_target<size, big_endian>* target =
431 parameters->sized_target<size, big_endian>();
433 const unsigned char* local_symbols;
434 if (rd->local_symbols == NULL)
435 local_symbols = NULL;
437 local_symbols = rd->local_symbols->data();
439 // For incremental links, allocate the counters for incremental relocations.
440 if (layout->incremental_inputs() != NULL)
441 this->allocate_incremental_reloc_counts();
443 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
444 p != rd->relocs.end();
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.
450 if (parameters->options().gc_sections()
451 || parameters->options().icf_enabled())
453 if (p->output_section == NULL)
456 if (!parameters->options().relocatable())
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)
462 target->scan_relocs(symtab, layout, this, p->data_shndx,
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_,
468 if (parameters->options().emit_relocs())
469 this->emit_relocs_scan(symtab, layout, local_symbols, p);
470 if (layout->incremental_inputs() != NULL)
471 this->incremental_relocs_scan(p);
475 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
476 gold_assert(rr != NULL);
477 rr->set_reloc_count(p->reloc_count);
478 target->scan_relocatable_relocs(symtab, layout, this,
479 p->data_shndx, p->sh_type,
483 p->needs_special_offset_handling,
484 this->local_symbol_count_,
493 // For incremental links, finalize the allocation of relocations.
494 if (layout->incremental_inputs() != NULL)
495 this->finalize_incremental_relocs(layout, true);
497 if (rd->local_symbols != NULL)
499 delete rd->local_symbols;
500 rd->local_symbols = NULL;
504 // This is a strategy class we use when scanning for --emit-relocs.
506 template<int sh_type>
507 class Emit_relocs_strategy
510 // A local non-section symbol.
511 inline Relocatable_relocs::Reloc_strategy
512 local_non_section_strategy(unsigned int, Relobj*, unsigned int)
513 { return Relocatable_relocs::RELOC_COPY; }
515 // A local section symbol.
516 inline Relocatable_relocs::Reloc_strategy
517 local_section_strategy(unsigned int, Relobj*)
519 if (sh_type == elfcpp::SHT_RELA)
520 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
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;
534 inline Relocatable_relocs::Reloc_strategy
535 global_strategy(unsigned int, Relobj*, unsigned int)
536 { return Relocatable_relocs::RELOC_COPY; }
539 // Scan the input relocations for --emit-relocs.
541 template<int size, bool big_endian>
543 Sized_relobj_file<size, big_endian>::emit_relocs_scan(
544 Symbol_table* symtab,
546 const unsigned char* plocal_syms,
547 const Read_relocs_data::Relocs_list::iterator& p)
549 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
550 gold_assert(rr != NULL);
551 rr->set_reloc_count(p->reloc_count);
553 if (p->sh_type == elfcpp::SHT_REL)
554 this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(symtab, layout,
558 gold_assert(p->sh_type == elfcpp::SHT_RELA);
559 this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(symtab, layout,
564 // Scan the input relocation for --emit-relocs, templatized on the
565 // type of the relocation section.
567 template<int size, bool big_endian>
568 template<int sh_type>
570 Sized_relobj_file<size, big_endian>::emit_relocs_scan_reltype(
571 Symbol_table* symtab,
573 const unsigned char* plocal_syms,
574 const Read_relocs_data::Relocs_list::iterator& p,
575 Relocatable_relocs* rr)
577 scan_relocatable_relocs<size, big_endian, sh_type,
578 Emit_relocs_strategy<sh_type> >(
586 p->needs_special_offset_handling,
587 this->local_symbol_count_,
592 // Scan the input relocations for --incremental.
594 template<int size, bool big_endian>
596 Sized_relobj_file<size, big_endian>::incremental_relocs_scan(
597 const Read_relocs_data::Relocs_list::iterator& p)
599 if (p->sh_type == elfcpp::SHT_REL)
600 this->incremental_relocs_scan_reltype<elfcpp::SHT_REL>(p);
603 gold_assert(p->sh_type == elfcpp::SHT_RELA);
604 this->incremental_relocs_scan_reltype<elfcpp::SHT_RELA>(p);
608 // Scan the input relocation for --incremental, templatized on the
609 // type of the relocation section.
611 template<int size, bool big_endian>
612 template<int sh_type>
614 Sized_relobj_file<size, big_endian>::incremental_relocs_scan_reltype(
615 const Read_relocs_data::Relocs_list::iterator& p)
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;
622 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
624 Reltype reloc(prelocs);
626 if (p->needs_special_offset_handling
627 && !p->output_section->is_input_address_mapped(this, p->data_shndx,
628 reloc.get_r_offset()))
631 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
633 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
635 if (r_sym >= this->local_symbol_count_)
636 this->count_incremental_reloc(r_sym - this->local_symbol_count_);
640 // Relocate the input sections and write out the local symbols.
642 template<int size, bool big_endian>
644 Sized_relobj_file<size, big_endian>::do_relocate(const Symbol_table* symtab,
645 const Layout* layout,
648 unsigned int shnum = this->shnum();
650 // Read the section headers.
651 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
652 shnum * This::shdr_size,
658 // Make two passes over the sections. The first one copies the
659 // section data to the output file. The second one applies
662 this->write_sections(layout, pshdrs, of, &views);
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();
668 // Make the views available through get_output_view() for the duration
669 // of this routine. This RAII class will reset output_views_ to NULL
670 // when the views go out of scope.
671 struct Set_output_views
673 Set_output_views(const Views** ppviews, const Views* pviews)
680 { *ppviews_ = NULL; }
682 const Views** ppviews_;
684 Set_output_views set_output_views(&this->output_views_, &views);
686 // Apply relocations.
688 this->relocate_sections(symtab, layout, pshdrs, of, &views);
690 // After we've done the relocations, we release the hash tables,
691 // since we no longer need them.
692 this->free_input_to_output_maps();
694 // Write out the accumulated views.
695 for (unsigned int i = 1; i < shnum; ++i)
697 if (views[i].view != NULL)
699 if (views[i].is_ctors_reverse_view)
700 this->reverse_words(views[i].view, views[i].view_size);
701 if (!views[i].is_postprocessing_view)
703 if (views[i].is_input_output_view)
704 of->write_input_output_view(views[i].offset,
708 of->write_output_view(views[i].offset, views[i].view_size,
714 // Write out the local symbols.
715 this->write_local_symbols(of, layout->sympool(), layout->dynpool(),
716 layout->symtab_xindex(), layout->dynsym_xindex(),
717 layout->symtab_section_offset());
720 // Sort a Read_multiple vector by file offset.
721 struct Read_multiple_compare
724 operator()(const File_read::Read_multiple_entry& rme1,
725 const File_read::Read_multiple_entry& rme2) const
726 { return rme1.file_offset < rme2.file_offset; }
729 // Write section data to the output file. PSHDRS points to the
730 // section headers. Record the views in *PVIEWS for use when
733 template<int size, bool big_endian>
735 Sized_relobj_file<size, big_endian>::write_sections(const Layout* layout,
736 const unsigned char* pshdrs,
740 unsigned int shnum = this->shnum();
741 const Output_sections& out_sections(this->output_sections());
742 const std::vector<Address>& out_offsets(this->section_offsets());
744 File_read::Read_multiple rm;
745 bool is_sorted = true;
747 const unsigned char* p = pshdrs + This::shdr_size;
748 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
750 View_size* pvs = &(*pviews)[i];
754 const Output_section* os = out_sections[i];
757 Address output_offset = out_offsets[i];
759 typename This::Shdr shdr(p);
761 if (shdr.get_sh_type() == elfcpp::SHT_NOBITS)
764 if ((parameters->options().relocatable()
765 || parameters->options().emit_relocs())
766 && (shdr.get_sh_type() == elfcpp::SHT_REL
767 || shdr.get_sh_type() == elfcpp::SHT_RELA)
768 && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0)
770 // This is a reloc section in a relocatable link or when
771 // emitting relocs. We don't need to read the input file.
772 // The size and file offset are stored in the
773 // Relocatable_relocs structure.
774 Relocatable_relocs* rr = this->relocatable_relocs(i);
775 gold_assert(rr != NULL);
776 Output_data* posd = rr->output_data();
777 gold_assert(posd != NULL);
779 pvs->offset = posd->offset();
780 pvs->view_size = posd->data_size();
781 pvs->view = of->get_output_view(pvs->offset, pvs->view_size);
782 pvs->address = posd->address();
783 pvs->is_input_output_view = false;
784 pvs->is_postprocessing_view = false;
785 pvs->is_ctors_reverse_view = false;
790 // In the normal case, this input section is simply mapped to
791 // the output section at offset OUTPUT_OFFSET.
793 // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is
794 // handled specially--e.g., a .eh_frame section. The relocation
795 // routines need to check for each reloc where it should be
796 // applied. For this case, we need an input/output view for the
797 // entire contents of the section in the output file. We don't
798 // want to copy the contents of the input section to the output
799 // section; the output section contents were already written,
800 // and we waited for them in Relocate_task::is_runnable because
801 // relocs_must_follow_section_writes is set for the object.
803 // Regardless of which of the above cases is true, we have to
804 // check requires_postprocessing of the output section. If that
805 // is false, then we work with views of the output file
806 // directly. If it is true, then we work with a separate
807 // buffer, and the output section is responsible for writing the
808 // final data to the output file.
810 off_t output_section_offset;
811 Address output_section_size;
812 if (!os->requires_postprocessing())
814 output_section_offset = os->offset();
815 output_section_size = convert_types<Address, off_t>(os->data_size());
819 output_section_offset = 0;
820 output_section_size =
821 convert_types<Address, off_t>(os->postprocessing_buffer_size());
825 section_size_type view_size;
826 bool must_decompress = false;
827 if (output_offset != invalid_address)
829 view_start = output_section_offset + output_offset;
830 view_size = convert_to_section_size_type(shdr.get_sh_size());
831 section_size_type uncompressed_size;
832 if (this->section_is_compressed(i, &uncompressed_size))
834 view_size = uncompressed_size;
835 must_decompress = true;
840 view_start = output_section_offset;
841 view_size = convert_to_section_size_type(output_section_size);
847 gold_assert(output_offset == invalid_address
848 || output_offset + view_size <= output_section_size);
851 if (os->requires_postprocessing())
853 unsigned char* buffer = os->postprocessing_buffer();
854 view = buffer + view_start;
855 if (output_offset != invalid_address && !must_decompress)
857 off_t sh_offset = shdr.get_sh_offset();
858 if (!rm.empty() && rm.back().file_offset > sh_offset)
860 rm.push_back(File_read::Read_multiple_entry(sh_offset,
866 if (output_offset == invalid_address)
867 view = of->get_input_output_view(view_start, view_size);
870 view = of->get_output_view(view_start, view_size);
871 if (!must_decompress)
873 off_t sh_offset = shdr.get_sh_offset();
874 if (!rm.empty() && rm.back().file_offset > sh_offset)
876 rm.push_back(File_read::Read_multiple_entry(sh_offset,
884 // Read and decompress the section.
885 section_size_type len;
886 const unsigned char* p = this->section_contents(i, &len, false);
887 if (!decompress_input_section(p, len, view, view_size,
889 shdr.get_sh_flags()))
890 this->error(_("could not decompress section %s"),
891 this->section_name(i).c_str());
895 pvs->address = os->address();
896 if (output_offset != invalid_address)
897 pvs->address += output_offset;
898 pvs->offset = view_start;
899 pvs->view_size = view_size;
900 pvs->is_input_output_view = output_offset == invalid_address;
901 pvs->is_postprocessing_view = os->requires_postprocessing();
902 pvs->is_ctors_reverse_view =
903 (!parameters->options().relocatable()
904 && view_size > size / 8
905 && (strcmp(os->name(), ".init_array") == 0
906 || strcmp(os->name(), ".fini_array") == 0)
907 && layout->is_ctors_in_init_array(this, i));
910 // Actually read the data.
914 std::sort(rm.begin(), rm.end(), Read_multiple_compare());
915 this->read_multiple(rm);
919 // Relocate section data. VIEWS points to the section data as views
920 // in the output file.
922 template<int size, bool big_endian>
924 Sized_relobj_file<size, big_endian>::do_relocate_sections(
925 const Symbol_table* symtab,
926 const Layout* layout,
927 const unsigned char* pshdrs,
931 unsigned int shnum = this->shnum();
932 Sized_target<size, big_endian>* target =
933 parameters->sized_target<size, big_endian>();
935 const Output_sections& out_sections(this->output_sections());
936 const std::vector<Address>& out_offsets(this->section_offsets());
938 Relocate_info<size, big_endian> relinfo;
939 relinfo.symtab = symtab;
940 relinfo.layout = layout;
941 relinfo.object = this;
943 const unsigned char* p = pshdrs + This::shdr_size;
944 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
946 typename This::Shdr shdr(p);
948 unsigned int sh_type = shdr.get_sh_type();
949 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
952 off_t sh_size = shdr.get_sh_size();
956 unsigned int index = this->adjust_shndx(shdr.get_sh_info());
957 if (index >= this->shnum())
959 this->error(_("relocation section %u has bad info %u"),
964 Output_section* os = out_sections[index];
967 // This relocation section is against a section which we
971 Address output_offset = out_offsets[index];
973 gold_assert((*pviews)[index].view != NULL);
974 if (parameters->options().relocatable())
975 gold_assert((*pviews)[i].view != NULL);
977 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
979 gold_error(_("relocation section %u uses unexpected "
981 i, this->adjust_shndx(shdr.get_sh_link()));
985 const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(),
986 sh_size, true, false);
988 unsigned int reloc_size;
989 if (sh_type == elfcpp::SHT_REL)
990 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
992 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
994 if (reloc_size != shdr.get_sh_entsize())
996 gold_error(_("unexpected entsize for reloc section %u: %lu != %u"),
997 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
1002 size_t reloc_count = sh_size / reloc_size;
1003 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
1005 gold_error(_("reloc section %u size %lu uneven"),
1006 i, static_cast<unsigned long>(sh_size));
1010 gold_assert(output_offset != invalid_address
1011 || this->relocs_must_follow_section_writes());
1013 relinfo.reloc_shndx = i;
1014 relinfo.reloc_shdr = p;
1015 relinfo.data_shndx = index;
1016 relinfo.data_shdr = pshdrs + index * This::shdr_size;
1017 unsigned char* view = (*pviews)[index].view;
1018 Address address = (*pviews)[index].address;
1019 section_size_type view_size = (*pviews)[index].view_size;
1021 Reloc_symbol_changes* reloc_map = NULL;
1022 if (this->uses_split_stack() && output_offset != invalid_address)
1024 typename This::Shdr data_shdr(pshdrs + index * This::shdr_size);
1025 if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0)
1026 this->split_stack_adjust(symtab, pshdrs, sh_type, index,
1027 prelocs, reloc_count, view, view_size,
1031 Relocatable_relocs* rr = NULL;
1032 if (parameters->options().emit_relocs()
1033 || parameters->options().relocatable())
1034 rr = this->relocatable_relocs(i);
1037 if (!parameters->options().relocatable())
1039 target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os,
1040 output_offset == invalid_address,
1041 view, address, view_size, reloc_map);
1042 if (parameters->options().emit_relocs())
1043 target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count,
1045 view, address, view_size,
1047 (*pviews)[i].view_size);
1048 if (parameters->incremental())
1049 this->incremental_relocs_write(&relinfo, sh_type, prelocs,
1050 reloc_count, os, output_offset, of);
1053 target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count,
1055 view, address, view_size,
1057 (*pviews)[i].view_size);
1061 // Return the output view for section SHNDX.
1063 template<int size, bool big_endian>
1064 const unsigned char*
1065 Sized_relobj_file<size, big_endian>::do_get_output_view(
1067 section_size_type* plen) const
1069 gold_assert(this->output_views_ != NULL);
1070 gold_assert(shndx < this->output_views_->size());
1071 const View_size& v = (*this->output_views_)[shndx];
1072 *plen = v.view_size;
1076 // Write the incremental relocs.
1078 template<int size, bool big_endian>
1080 Sized_relobj_file<size, big_endian>::incremental_relocs_write(
1081 const Relocate_info<size, big_endian>* relinfo,
1082 unsigned int sh_type,
1083 const unsigned char* prelocs,
1085 Output_section* output_section,
1086 Address output_offset,
1089 if (sh_type == elfcpp::SHT_REL)
1090 this->incremental_relocs_write_reltype<elfcpp::SHT_REL>(
1099 gold_assert(sh_type == elfcpp::SHT_RELA);
1100 this->incremental_relocs_write_reltype<elfcpp::SHT_RELA>(
1110 // Write the incremental relocs, templatized on the type of the
1111 // relocation section.
1113 template<int size, bool big_endian>
1114 template<int sh_type>
1116 Sized_relobj_file<size, big_endian>::incremental_relocs_write_reltype(
1117 const Relocate_info<size, big_endian>* relinfo,
1118 const unsigned char* prelocs,
1120 Output_section* output_section,
1121 Address output_offset,
1124 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reloc;
1125 const unsigned int reloc_size =
1126 Reloc_types<sh_type, size, big_endian>::reloc_size;
1127 const unsigned int sizeof_addr = size / 8;
1128 const unsigned int incr_reloc_size =
1129 Incremental_relocs_reader<size, big_endian>::reloc_size;
1131 unsigned int out_shndx = output_section->out_shndx();
1133 // Get a view for the .gnu_incremental_relocs section.
1135 Incremental_inputs* inputs = relinfo->layout->incremental_inputs();
1136 gold_assert(inputs != NULL);
1137 const off_t relocs_off = inputs->relocs_section()->offset();
1138 const off_t relocs_size = inputs->relocs_section()->data_size();
1139 unsigned char* const view = of->get_output_view(relocs_off, relocs_size);
1141 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
1143 Reloc reloc(prelocs);
1145 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1146 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1147 const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
1149 if (r_sym < this->local_symbol_count_)
1152 // Get the new offset--the location in the output section where
1153 // this relocation should be applied.
1155 Address offset = reloc.get_r_offset();
1156 if (output_offset != invalid_address)
1157 offset += output_offset;
1160 section_offset_type sot_offset =
1161 convert_types<section_offset_type, Address>(offset);
1162 section_offset_type new_sot_offset =
1163 output_section->output_offset(relinfo->object,
1164 relinfo->data_shndx,
1166 gold_assert(new_sot_offset != -1);
1167 offset += new_sot_offset;
1171 typename elfcpp::Elf_types<size>::Elf_Swxword addend;
1172 if (sh_type == elfcpp::SHT_RELA)
1174 Reloc_types<sh_type, size, big_endian>::get_reloc_addend(&reloc);
1177 // FIXME: Get the addend for SHT_REL.
1181 // Get the index of the output relocation.
1183 unsigned int reloc_index =
1184 this->next_incremental_reloc_index(r_sym - this->local_symbol_count_);
1186 // Write the relocation.
1188 unsigned char* pov = view + reloc_index * incr_reloc_size;
1189 elfcpp::Swap<32, big_endian>::writeval(pov, r_type);
1190 elfcpp::Swap<32, big_endian>::writeval(pov + 4, out_shndx);
1191 elfcpp::Swap<size, big_endian>::writeval(pov + 8, offset);
1192 elfcpp::Swap<size, big_endian>::writeval(pov + 8 + sizeof_addr, addend);
1193 of->write_output_view(pov - view, incr_reloc_size, view);
1197 // Create merge hash tables for the local symbols. These are used to
1198 // speed up relocations.
1200 template<int size, bool big_endian>
1202 Sized_relobj_file<size, big_endian>::initialize_input_to_output_maps()
1204 const unsigned int loccount = this->local_symbol_count_;
1205 for (unsigned int i = 1; i < loccount; ++i)
1207 Symbol_value<size>& lv(this->local_values_[i]);
1208 lv.initialize_input_to_output_map(this);
1212 // Free merge hash tables for the local symbols.
1214 template<int size, bool big_endian>
1216 Sized_relobj_file<size, big_endian>::free_input_to_output_maps()
1218 const unsigned int loccount = this->local_symbol_count_;
1219 for (unsigned int i = 1; i < loccount; ++i)
1221 Symbol_value<size>& lv(this->local_values_[i]);
1222 lv.free_input_to_output_map();
1226 // If an object was compiled with -fsplit-stack, this is called to
1227 // check whether any relocations refer to functions defined in objects
1228 // which were not compiled with -fsplit-stack. If they were, then we
1229 // need to apply some target-specific adjustments to request
1230 // additional stack space.
1232 template<int size, bool big_endian>
1234 Sized_relobj_file<size, big_endian>::split_stack_adjust(
1235 const Symbol_table* symtab,
1236 const unsigned char* pshdrs,
1237 unsigned int sh_type,
1239 const unsigned char* prelocs,
1241 unsigned char* view,
1242 section_size_type view_size,
1243 Reloc_symbol_changes** reloc_map)
1245 if (sh_type == elfcpp::SHT_REL)
1246 this->split_stack_adjust_reltype<elfcpp::SHT_REL>(symtab, pshdrs, shndx,
1247 prelocs, reloc_count,
1252 gold_assert(sh_type == elfcpp::SHT_RELA);
1253 this->split_stack_adjust_reltype<elfcpp::SHT_RELA>(symtab, pshdrs, shndx,
1254 prelocs, reloc_count,
1260 // Adjust for -fsplit-stack, templatized on the type of the relocation
1263 template<int size, bool big_endian>
1264 template<int sh_type>
1266 Sized_relobj_file<size, big_endian>::split_stack_adjust_reltype(
1267 const Symbol_table* symtab,
1268 const unsigned char* pshdrs,
1270 const unsigned char* prelocs,
1272 unsigned char* view,
1273 section_size_type view_size,
1274 Reloc_symbol_changes** reloc_map)
1276 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
1277 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
1279 size_t local_count = this->local_symbol_count();
1281 std::vector<section_offset_type> non_split_refs;
1283 const unsigned char* pr = prelocs;
1284 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1288 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1289 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1290 if (r_sym < local_count)
1293 const Symbol* gsym = this->global_symbol(r_sym);
1294 gold_assert(gsym != NULL);
1295 if (gsym->is_forwarder())
1296 gsym = symtab->resolve_forwards(gsym);
1298 // See if this relocation refers to a function defined in an
1299 // object compiled without -fsplit-stack. Note that we don't
1300 // care about the type of relocation--this means that in some
1301 // cases we will ask for a large stack unnecessarily, but this
1302 // is not fatal. FIXME: Some targets have symbols which are
1303 // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC.
1304 if (!gsym->is_undefined()
1305 && gsym->source() == Symbol::FROM_OBJECT
1306 && !gsym->object()->uses_split_stack())
1308 unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
1309 if (parameters->target().is_call_to_non_split(gsym, r_type))
1311 section_offset_type offset =
1312 convert_to_section_size_type(reloc.get_r_offset());
1313 non_split_refs.push_back(offset);
1318 if (non_split_refs.empty())
1321 // At this point, every entry in NON_SPLIT_REFS indicates a
1322 // relocation which refers to a function in an object compiled
1323 // without -fsplit-stack. We now have to convert that list into a
1324 // set of offsets to functions. First, we find all the functions.
1326 Function_offsets function_offsets;
1327 this->find_functions(pshdrs, shndx, &function_offsets);
1328 if (function_offsets.empty())
1331 // Now get a list of the function with references to non split-stack
1334 Function_offsets calls_non_split;
1335 for (std::vector<section_offset_type>::const_iterator p
1336 = non_split_refs.begin();
1337 p != non_split_refs.end();
1340 Function_offsets::const_iterator low = function_offsets.lower_bound(*p);
1341 if (low == function_offsets.end())
1343 else if (low->first == *p)
1345 else if (low == function_offsets.begin())
1350 calls_non_split.insert(*low);
1352 if (calls_non_split.empty())
1355 // Now we have a set of functions to adjust. The adjustments are
1356 // target specific. Besides changing the output section view
1357 // however, it likes, the target may request a relocation change
1358 // from one global symbol name to another.
1360 for (Function_offsets::const_iterator p = calls_non_split.begin();
1361 p != calls_non_split.end();
1366 parameters->target().calls_non_split(this, shndx, p->first, p->second,
1367 prelocs, reloc_count,
1368 view, view_size, &from, &to);
1371 gold_assert(!to.empty());
1372 Symbol* tosym = NULL;
1374 // Find relocations in the relevant function which are for
1377 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1381 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
1383 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1384 if (r_sym < local_count)
1387 section_offset_type offset =
1388 convert_to_section_size_type(reloc.get_r_offset());
1389 if (offset < p->first
1392 + static_cast<section_offset_type>(p->second))))
1395 const Symbol* gsym = this->global_symbol(r_sym);
1396 if (from == gsym->name())
1400 tosym = symtab->lookup(to.c_str());
1403 this->error(_("could not convert call "
1405 from.c_str(), to.c_str());
1410 if (*reloc_map == NULL)
1411 *reloc_map = new Reloc_symbol_changes(reloc_count);
1412 (*reloc_map)->set(i, tosym);
1419 // Find all the function in this object defined in section SHNDX.
1420 // Store their offsets in the section in FUNCTION_OFFSETS.
1422 template<int size, bool big_endian>
1424 Sized_relobj_file<size, big_endian>::find_functions(
1425 const unsigned char* pshdrs,
1427 Sized_relobj_file<size, big_endian>::Function_offsets* function_offsets)
1429 // We need to read the symbols to find the functions. If we wanted
1430 // to, we could cache reading the symbols across all sections in the
1432 const unsigned int symtab_shndx = this->symtab_shndx_;
1433 typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size);
1434 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
1436 typename elfcpp::Elf_types<size>::Elf_WXword sh_size =
1437 symtabshdr.get_sh_size();
1438 const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
1439 sh_size, true, true);
1441 const int sym_size = This::sym_size;
1442 const unsigned int symcount = sh_size / sym_size;
1443 for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size)
1445 typename elfcpp::Sym<size, big_endian> isym(psyms);
1447 // FIXME: Some targets can have functions which do not have type
1448 // STT_FUNC, e.g., STT_ARM_TFUNC.
1449 if (isym.get_st_type() != elfcpp::STT_FUNC
1450 || isym.get_st_size() == 0)
1454 Symbol_location loc;
1455 loc.shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
1461 loc.offset = isym.get_st_value();
1462 parameters->target().function_location(&loc);
1464 if (loc.shndx != shndx)
1467 section_offset_type value =
1468 convert_to_section_size_type(loc.offset);
1469 section_size_type fnsize =
1470 convert_to_section_size_type(isym.get_st_size());
1472 (*function_offsets)[value] = fnsize;
1476 // Reverse the words in a section. Used for .ctors sections mapped to
1477 // .init_array sections. See ctors_sections_in_init_array in
1480 template<int size, bool big_endian>
1482 Sized_relobj_file<size, big_endian>::reverse_words(unsigned char* view,
1483 section_size_type view_size)
1485 typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
1486 Valtype* vview = reinterpret_cast<Valtype*>(view);
1487 section_size_type vview_size = view_size / (size / 8);
1488 for (section_size_type i = 0; i < vview_size / 2; ++i)
1490 Valtype tmp = vview[i];
1491 vview[i] = vview[vview_size - 1 - i];
1492 vview[vview_size - 1 - i] = tmp;
1496 // Class Merged_symbol_value.
1500 Merged_symbol_value<size>::initialize_input_to_output_map(
1501 const Relobj* object,
1502 unsigned int input_shndx)
1504 object->initialize_input_to_output_map<size>(input_shndx,
1505 this->output_start_address_,
1506 &this->output_addresses_);
1509 // Get the output value corresponding to an input offset if we
1510 // couldn't find it in the hash table.
1513 typename elfcpp::Elf_types<size>::Elf_Addr
1514 Merged_symbol_value<size>::value_from_output_section(
1515 const Relobj* object,
1516 unsigned int input_shndx,
1517 typename elfcpp::Elf_types<size>::Elf_Addr input_offset) const
1519 section_offset_type output_offset;
1520 bool found = object->merge_output_offset(input_shndx, input_offset,
1523 // If this assertion fails, it means that some relocation was
1524 // against a portion of an input merge section which we didn't map
1525 // to the output file and we didn't explicitly discard. We should
1526 // always map all portions of input merge sections.
1529 if (output_offset == -1)
1532 return this->output_start_address_ + output_offset;
1535 // Track_relocs methods.
1537 // Initialize the class to track the relocs. This gets the object,
1538 // the reloc section index, and the type of the relocs. This returns
1539 // false if something goes wrong.
1541 template<int size, bool big_endian>
1543 Track_relocs<size, big_endian>::initialize(
1545 unsigned int reloc_shndx,
1546 unsigned int reloc_type)
1548 // If RELOC_SHNDX is -1U, it means there is more than one reloc
1549 // section for the .eh_frame section. We can't handle that case.
1550 if (reloc_shndx == -1U)
1553 // If RELOC_SHNDX is 0, there is no reloc section.
1554 if (reloc_shndx == 0)
1557 // Get the contents of the reloc section.
1558 this->prelocs_ = object->section_contents(reloc_shndx, &this->len_, false);
1560 if (reloc_type == elfcpp::SHT_REL)
1561 this->reloc_size_ = elfcpp::Elf_sizes<size>::rel_size;
1562 else if (reloc_type == elfcpp::SHT_RELA)
1563 this->reloc_size_ = elfcpp::Elf_sizes<size>::rela_size;
1567 if (this->len_ % this->reloc_size_ != 0)
1569 object->error(_("reloc section size %zu is not a multiple of "
1571 static_cast<size_t>(this->len_),
1579 // Return the offset of the next reloc, or -1 if there isn't one.
1581 template<int size, bool big_endian>
1583 Track_relocs<size, big_endian>::next_offset() const
1585 if (this->pos_ >= this->len_)
1588 // Rel and Rela start out the same, so we can always use Rel to find
1589 // the r_offset value.
1590 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1591 return rel.get_r_offset();
1594 // Return the index of the symbol referenced by the next reloc, or -1U
1595 // if there aren't any more relocs.
1597 template<int size, bool big_endian>
1599 Track_relocs<size, big_endian>::next_symndx() const
1601 if (this->pos_ >= this->len_)
1604 // Rel and Rela start out the same, so we can use Rel to find the
1606 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1607 return elfcpp::elf_r_sym<size>(rel.get_r_info());
1610 // Return the addend of the next reloc, or 0 if there isn't one.
1612 template<int size, bool big_endian>
1614 Track_relocs<size, big_endian>::next_addend() const
1616 if (this->pos_ >= this->len_)
1618 if (this->reloc_size_ == elfcpp::Elf_sizes<size>::rel_size)
1620 elfcpp::Rela<size, big_endian> rela(this->prelocs_ + this->pos_);
1621 return rela.get_r_addend();
1624 // Advance to the next reloc whose r_offset is greater than or equal
1625 // to OFFSET. Return the number of relocs we skip.
1627 template<int size, bool big_endian>
1629 Track_relocs<size, big_endian>::advance(off_t offset)
1632 while (this->pos_ < this->len_)
1634 // Rel and Rela start out the same, so we can always use Rel to
1635 // find the r_offset value.
1636 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1637 if (static_cast<off_t>(rel.get_r_offset()) >= offset)
1640 this->pos_ += this->reloc_size_;
1645 // Instantiate the templates we need.
1647 #ifdef HAVE_TARGET_32_LITTLE
1650 Sized_relobj_file<32, false>::do_read_relocs(Read_relocs_data* rd);
1653 #ifdef HAVE_TARGET_32_BIG
1656 Sized_relobj_file<32, true>::do_read_relocs(Read_relocs_data* rd);
1659 #ifdef HAVE_TARGET_64_LITTLE
1662 Sized_relobj_file<64, false>::do_read_relocs(Read_relocs_data* rd);
1665 #ifdef HAVE_TARGET_64_BIG
1668 Sized_relobj_file<64, true>::do_read_relocs(Read_relocs_data* rd);
1671 #ifdef HAVE_TARGET_32_LITTLE
1674 Sized_relobj_file<32, false>::do_gc_process_relocs(Symbol_table* symtab,
1676 Read_relocs_data* rd);
1679 #ifdef HAVE_TARGET_32_BIG
1682 Sized_relobj_file<32, true>::do_gc_process_relocs(Symbol_table* symtab,
1684 Read_relocs_data* rd);
1687 #ifdef HAVE_TARGET_64_LITTLE
1690 Sized_relobj_file<64, false>::do_gc_process_relocs(Symbol_table* symtab,
1692 Read_relocs_data* rd);
1695 #ifdef HAVE_TARGET_64_BIG
1698 Sized_relobj_file<64, true>::do_gc_process_relocs(Symbol_table* symtab,
1700 Read_relocs_data* rd);
1703 #ifdef HAVE_TARGET_32_LITTLE
1706 Sized_relobj_file<32, false>::do_scan_relocs(Symbol_table* symtab,
1708 Read_relocs_data* rd);
1711 #ifdef HAVE_TARGET_32_BIG
1714 Sized_relobj_file<32, true>::do_scan_relocs(Symbol_table* symtab,
1716 Read_relocs_data* rd);
1719 #ifdef HAVE_TARGET_64_LITTLE
1722 Sized_relobj_file<64, false>::do_scan_relocs(Symbol_table* symtab,
1724 Read_relocs_data* rd);
1727 #ifdef HAVE_TARGET_64_BIG
1730 Sized_relobj_file<64, true>::do_scan_relocs(Symbol_table* symtab,
1732 Read_relocs_data* rd);
1735 #ifdef HAVE_TARGET_32_LITTLE
1738 Sized_relobj_file<32, false>::do_relocate(const Symbol_table* symtab,
1739 const Layout* layout,
1743 #ifdef HAVE_TARGET_32_BIG
1746 Sized_relobj_file<32, true>::do_relocate(const Symbol_table* symtab,
1747 const Layout* layout,
1751 #ifdef HAVE_TARGET_64_LITTLE
1754 Sized_relobj_file<64, false>::do_relocate(const Symbol_table* symtab,
1755 const Layout* layout,
1759 #ifdef HAVE_TARGET_64_BIG
1762 Sized_relobj_file<64, true>::do_relocate(const Symbol_table* symtab,
1763 const Layout* layout,
1767 #ifdef HAVE_TARGET_32_LITTLE
1770 Sized_relobj_file<32, false>::do_relocate_sections(
1771 const Symbol_table* symtab,
1772 const Layout* layout,
1773 const unsigned char* pshdrs,
1778 const unsigned char*
1779 Sized_relobj_file<32, false>::do_get_output_view(
1781 section_size_type* plen) const;
1784 #ifdef HAVE_TARGET_32_BIG
1787 Sized_relobj_file<32, true>::do_relocate_sections(
1788 const Symbol_table* symtab,
1789 const Layout* layout,
1790 const unsigned char* pshdrs,
1795 const unsigned char*
1796 Sized_relobj_file<32, true>::do_get_output_view(
1798 section_size_type* plen) const;
1801 #ifdef HAVE_TARGET_64_LITTLE
1804 Sized_relobj_file<64, false>::do_relocate_sections(
1805 const Symbol_table* symtab,
1806 const Layout* layout,
1807 const unsigned char* pshdrs,
1812 const unsigned char*
1813 Sized_relobj_file<64, false>::do_get_output_view(
1815 section_size_type* plen) const;
1818 #ifdef HAVE_TARGET_64_BIG
1821 Sized_relobj_file<64, true>::do_relocate_sections(
1822 const Symbol_table* symtab,
1823 const Layout* layout,
1824 const unsigned char* pshdrs,
1829 const unsigned char*
1830 Sized_relobj_file<64, true>::do_get_output_view(
1832 section_size_type* plen) const;
1835 #ifdef HAVE_TARGET_32_LITTLE
1838 Sized_relobj_file<32, false>::initialize_input_to_output_maps();
1842 Sized_relobj_file<32, false>::free_input_to_output_maps();
1845 #ifdef HAVE_TARGET_32_BIG
1848 Sized_relobj_file<32, true>::initialize_input_to_output_maps();
1852 Sized_relobj_file<32, true>::free_input_to_output_maps();
1855 #ifdef HAVE_TARGET_64_LITTLE
1858 Sized_relobj_file<64, false>::initialize_input_to_output_maps();
1862 Sized_relobj_file<64, false>::free_input_to_output_maps();
1865 #ifdef HAVE_TARGET_64_BIG
1868 Sized_relobj_file<64, true>::initialize_input_to_output_maps();
1872 Sized_relobj_file<64, true>::free_input_to_output_maps();
1875 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1877 class Merged_symbol_value<32>;
1880 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1882 class Merged_symbol_value<64>;
1885 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1887 class Symbol_value<32>;
1890 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1892 class Symbol_value<64>;
1895 #ifdef HAVE_TARGET_32_LITTLE
1897 class Track_relocs<32, false>;
1900 #ifdef HAVE_TARGET_32_BIG
1902 class Track_relocs<32, true>;
1905 #ifdef HAVE_TARGET_64_LITTLE
1907 class Track_relocs<64, false>;
1910 #ifdef HAVE_TARGET_64_BIG
1912 class Track_relocs<64, true>;
1915 } // End namespace gold.