1 // reloc.cc -- relocate input files for gold.
3 // Copyright 2006, 2007, 2008, 2009, 2010, 2011 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();
325 unsigned int reloc_size;
326 if (sh_type == elfcpp::SHT_REL)
327 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
329 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
330 if (reloc_size != shdr.get_sh_entsize())
332 this->error(_("unexpected entsize for reloc section %u: %lu != %u"),
333 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
338 size_t reloc_count = sh_size / reloc_size;
339 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
341 this->error(_("reloc section %u size %lu uneven"),
342 i, static_cast<unsigned long>(sh_size));
346 rd->relocs.push_back(Section_relocs());
347 Section_relocs& sr(rd->relocs.back());
349 sr.data_shndx = shndx;
350 sr.contents = this->get_lasting_view(shdr.get_sh_offset(), sh_size,
352 sr.sh_type = sh_type;
353 sr.reloc_count = reloc_count;
354 sr.output_section = os;
355 sr.needs_special_offset_handling = out_offsets[shndx] == invalid_address;
356 sr.is_data_section_allocated = is_section_allocated;
359 // Read the local symbols.
360 gold_assert(this->symtab_shndx_ != -1U);
361 if (this->symtab_shndx_ == 0 || this->local_symbol_count_ == 0)
362 rd->local_symbols = NULL;
365 typename This::Shdr symtabshdr(pshdrs
366 + this->symtab_shndx_ * This::shdr_size);
367 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
368 const int sym_size = This::sym_size;
369 const unsigned int loccount = this->local_symbol_count_;
370 gold_assert(loccount == symtabshdr.get_sh_info());
371 off_t locsize = loccount * sym_size;
372 rd->local_symbols = this->get_lasting_view(symtabshdr.get_sh_offset(),
373 locsize, true, true);
377 // Process the relocs to generate mappings from source sections to referenced
378 // sections. This is used during garbage collection to determine garbage
381 template<int size, bool big_endian>
383 Sized_relobj_file<size, big_endian>::do_gc_process_relocs(Symbol_table* symtab,
385 Read_relocs_data* rd)
387 Sized_target<size, big_endian>* target =
388 parameters->sized_target<size, big_endian>();
390 const unsigned char* local_symbols;
391 if (rd->local_symbols == NULL)
392 local_symbols = NULL;
394 local_symbols = rd->local_symbols->data();
396 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
397 p != rd->relocs.end();
400 if (!parameters->options().relocatable())
402 // As noted above, when not generating an object file, we
403 // only scan allocated sections. We may see a non-allocated
404 // section here if we are emitting relocs.
405 if (p->is_data_section_allocated)
406 target->gc_process_relocs(symtab, layout, this,
407 p->data_shndx, p->sh_type,
408 p->contents->data(), p->reloc_count,
410 p->needs_special_offset_handling,
411 this->local_symbol_count_,
418 // Scan the relocs and adjust the symbol table. This looks for
419 // relocations which require GOT/PLT/COPY relocations.
421 template<int size, bool big_endian>
423 Sized_relobj_file<size, big_endian>::do_scan_relocs(Symbol_table* symtab,
425 Read_relocs_data* rd)
427 Sized_target<size, big_endian>* target =
428 parameters->sized_target<size, big_endian>();
430 const unsigned char* local_symbols;
431 if (rd->local_symbols == NULL)
432 local_symbols = NULL;
434 local_symbols = rd->local_symbols->data();
436 // For incremental links, allocate the counters for incremental relocations.
437 if (layout->incremental_inputs() != NULL)
438 this->allocate_incremental_reloc_counts();
440 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
441 p != rd->relocs.end();
444 // When garbage collection is on, unreferenced sections are not included
445 // in the link that would have been included normally. This is known only
446 // after Read_relocs hence this check has to be done again.
447 if (parameters->options().gc_sections()
448 || parameters->options().icf_enabled())
450 if (p->output_section == NULL)
453 if (!parameters->options().relocatable())
455 // As noted above, when not generating an object file, we
456 // only scan allocated sections. We may see a non-allocated
457 // section here if we are emitting relocs.
458 if (p->is_data_section_allocated)
459 target->scan_relocs(symtab, layout, this, p->data_shndx,
460 p->sh_type, p->contents->data(),
461 p->reloc_count, p->output_section,
462 p->needs_special_offset_handling,
463 this->local_symbol_count_,
465 if (parameters->options().emit_relocs())
466 this->emit_relocs_scan(symtab, layout, local_symbols, p);
467 if (layout->incremental_inputs() != NULL)
468 this->incremental_relocs_scan(p);
472 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
473 gold_assert(rr != NULL);
474 rr->set_reloc_count(p->reloc_count);
475 target->scan_relocatable_relocs(symtab, layout, this,
476 p->data_shndx, p->sh_type,
480 p->needs_special_offset_handling,
481 this->local_symbol_count_,
490 // For incremental links, finalize the allocation of relocations.
491 if (layout->incremental_inputs() != NULL)
492 this->finalize_incremental_relocs(layout, true);
494 if (rd->local_symbols != NULL)
496 delete rd->local_symbols;
497 rd->local_symbols = NULL;
501 // This is a strategy class we use when scanning for --emit-relocs.
503 template<int sh_type>
504 class Emit_relocs_strategy
507 // A local non-section symbol.
508 inline Relocatable_relocs::Reloc_strategy
509 local_non_section_strategy(unsigned int, Relobj*, unsigned int)
510 { return Relocatable_relocs::RELOC_COPY; }
512 // A local section symbol.
513 inline Relocatable_relocs::Reloc_strategy
514 local_section_strategy(unsigned int, Relobj*)
516 if (sh_type == elfcpp::SHT_RELA)
517 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
520 // The addend is stored in the section contents. Since this
521 // is not a relocatable link, we are going to apply the
522 // relocation contents to the section as usual. This means
523 // that we have no way to record the original addend. If the
524 // original addend is not zero, there is basically no way for
525 // the user to handle this correctly. Caveat emptor.
526 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0;
531 inline Relocatable_relocs::Reloc_strategy
532 global_strategy(unsigned int, Relobj*, unsigned int)
533 { return Relocatable_relocs::RELOC_COPY; }
536 // Scan the input relocations for --emit-relocs.
538 template<int size, bool big_endian>
540 Sized_relobj_file<size, big_endian>::emit_relocs_scan(
541 Symbol_table* symtab,
543 const unsigned char* plocal_syms,
544 const Read_relocs_data::Relocs_list::iterator& p)
546 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
547 gold_assert(rr != NULL);
548 rr->set_reloc_count(p->reloc_count);
550 if (p->sh_type == elfcpp::SHT_REL)
551 this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(symtab, layout,
555 gold_assert(p->sh_type == elfcpp::SHT_RELA);
556 this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(symtab, layout,
561 // Scan the input relocation for --emit-relocs, templatized on the
562 // type of the relocation section.
564 template<int size, bool big_endian>
565 template<int sh_type>
567 Sized_relobj_file<size, big_endian>::emit_relocs_scan_reltype(
568 Symbol_table* symtab,
570 const unsigned char* plocal_syms,
571 const Read_relocs_data::Relocs_list::iterator& p,
572 Relocatable_relocs* rr)
574 scan_relocatable_relocs<size, big_endian, sh_type,
575 Emit_relocs_strategy<sh_type> >(
583 p->needs_special_offset_handling,
584 this->local_symbol_count_,
589 // Scan the input relocations for --incremental.
591 template<int size, bool big_endian>
593 Sized_relobj_file<size, big_endian>::incremental_relocs_scan(
594 const Read_relocs_data::Relocs_list::iterator& p)
596 if (p->sh_type == elfcpp::SHT_REL)
597 this->incremental_relocs_scan_reltype<elfcpp::SHT_REL>(p);
600 gold_assert(p->sh_type == elfcpp::SHT_RELA);
601 this->incremental_relocs_scan_reltype<elfcpp::SHT_RELA>(p);
605 // Scan the input relocation for --incremental, templatized on the
606 // type of the relocation section.
608 template<int size, bool big_endian>
609 template<int sh_type>
611 Sized_relobj_file<size, big_endian>::incremental_relocs_scan_reltype(
612 const Read_relocs_data::Relocs_list::iterator& p)
614 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
615 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
616 const unsigned char* prelocs = p->contents->data();
617 size_t reloc_count = p->reloc_count;
619 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
621 Reltype reloc(prelocs);
623 if (p->needs_special_offset_handling
624 && !p->output_section->is_input_address_mapped(this, p->data_shndx,
625 reloc.get_r_offset()))
628 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
630 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
632 if (r_sym >= this->local_symbol_count_)
633 this->count_incremental_reloc(r_sym - this->local_symbol_count_);
637 // Relocate the input sections and write out the local symbols.
639 template<int size, bool big_endian>
641 Sized_relobj_file<size, big_endian>::do_relocate(const Symbol_table* symtab,
642 const Layout* layout,
645 unsigned int shnum = this->shnum();
647 // Read the section headers.
648 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
649 shnum * This::shdr_size,
655 // Make two passes over the sections. The first one copies the
656 // section data to the output file. The second one applies
659 this->write_sections(pshdrs, of, &views);
661 // To speed up relocations, we set up hash tables for fast lookup of
662 // input offsets to output addresses.
663 this->initialize_input_to_output_maps();
665 // Apply relocations.
667 this->relocate_sections(symtab, layout, pshdrs, of, &views);
669 // After we've done the relocations, we release the hash tables,
670 // since we no longer need them.
671 this->free_input_to_output_maps();
673 // Write out the accumulated views.
674 for (unsigned int i = 1; i < shnum; ++i)
676 if (views[i].view != NULL)
678 if (!views[i].is_postprocessing_view)
680 if (views[i].is_input_output_view)
681 of->write_input_output_view(views[i].offset,
685 of->write_output_view(views[i].offset, views[i].view_size,
691 // Write out the local symbols.
692 this->write_local_symbols(of, layout->sympool(), layout->dynpool(),
693 layout->symtab_xindex(), layout->dynsym_xindex(),
694 layout->symtab_section_offset());
697 // Sort a Read_multiple vector by file offset.
698 struct Read_multiple_compare
701 operator()(const File_read::Read_multiple_entry& rme1,
702 const File_read::Read_multiple_entry& rme2) const
703 { return rme1.file_offset < rme2.file_offset; }
706 // Write section data to the output file. PSHDRS points to the
707 // section headers. Record the views in *PVIEWS for use when
710 template<int size, bool big_endian>
712 Sized_relobj_file<size, big_endian>::write_sections(const unsigned char* pshdrs,
716 unsigned int shnum = this->shnum();
717 const Output_sections& out_sections(this->output_sections());
718 const std::vector<Address>& out_offsets(this->section_offsets());
720 File_read::Read_multiple rm;
721 bool is_sorted = true;
723 const unsigned char* p = pshdrs + This::shdr_size;
724 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
726 View_size* pvs = &(*pviews)[i];
730 const Output_section* os = out_sections[i];
733 Address output_offset = out_offsets[i];
735 typename This::Shdr shdr(p);
737 if (shdr.get_sh_type() == elfcpp::SHT_NOBITS)
740 if ((parameters->options().relocatable()
741 || parameters->options().emit_relocs())
742 && (shdr.get_sh_type() == elfcpp::SHT_REL
743 || shdr.get_sh_type() == elfcpp::SHT_RELA)
744 && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0)
746 // This is a reloc section in a relocatable link or when
747 // emitting relocs. We don't need to read the input file.
748 // The size and file offset are stored in the
749 // Relocatable_relocs structure.
750 Relocatable_relocs* rr = this->relocatable_relocs(i);
751 gold_assert(rr != NULL);
752 Output_data* posd = rr->output_data();
753 gold_assert(posd != NULL);
755 pvs->offset = posd->offset();
756 pvs->view_size = posd->data_size();
757 pvs->view = of->get_output_view(pvs->offset, pvs->view_size);
758 pvs->address = posd->address();
759 pvs->is_input_output_view = false;
760 pvs->is_postprocessing_view = false;
765 // In the normal case, this input section is simply mapped to
766 // the output section at offset OUTPUT_OFFSET.
768 // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is
769 // handled specially--e.g., a .eh_frame section. The relocation
770 // routines need to check for each reloc where it should be
771 // applied. For this case, we need an input/output view for the
772 // entire contents of the section in the output file. We don't
773 // want to copy the contents of the input section to the output
774 // section; the output section contents were already written,
775 // and we waited for them in Relocate_task::is_runnable because
776 // relocs_must_follow_section_writes is set for the object.
778 // Regardless of which of the above cases is true, we have to
779 // check requires_postprocessing of the output section. If that
780 // is false, then we work with views of the output file
781 // directly. If it is true, then we work with a separate
782 // buffer, and the output section is responsible for writing the
783 // final data to the output file.
785 off_t output_section_offset;
786 Address output_section_size;
787 if (!os->requires_postprocessing())
789 output_section_offset = os->offset();
790 output_section_size = convert_types<Address, off_t>(os->data_size());
794 output_section_offset = 0;
795 output_section_size =
796 convert_types<Address, off_t>(os->postprocessing_buffer_size());
800 section_size_type view_size;
801 bool must_decompress = false;
802 if (output_offset != invalid_address)
804 view_start = output_section_offset + output_offset;
805 view_size = convert_to_section_size_type(shdr.get_sh_size());
806 section_size_type uncompressed_size;
807 if (this->section_is_compressed(i, &uncompressed_size))
809 view_size = uncompressed_size;
810 must_decompress = true;
815 view_start = output_section_offset;
816 view_size = convert_to_section_size_type(output_section_size);
822 gold_assert(output_offset == invalid_address
823 || output_offset + view_size <= output_section_size);
826 if (os->requires_postprocessing())
828 unsigned char* buffer = os->postprocessing_buffer();
829 view = buffer + view_start;
830 if (output_offset != invalid_address && !must_decompress)
832 off_t sh_offset = shdr.get_sh_offset();
833 if (!rm.empty() && rm.back().file_offset > sh_offset)
835 rm.push_back(File_read::Read_multiple_entry(sh_offset,
841 if (output_offset == invalid_address)
842 view = of->get_input_output_view(view_start, view_size);
845 view = of->get_output_view(view_start, view_size);
846 if (!must_decompress)
848 off_t sh_offset = shdr.get_sh_offset();
849 if (!rm.empty() && rm.back().file_offset > sh_offset)
851 rm.push_back(File_read::Read_multiple_entry(sh_offset,
859 // Read and decompress the section.
860 section_size_type len;
861 const unsigned char* p = this->section_contents(i, &len, false);
862 if (!decompress_input_section(p, len, view, view_size))
863 this->error(_("could not decompress section %s"),
864 this->section_name(i).c_str());
868 pvs->address = os->address();
869 if (output_offset != invalid_address)
870 pvs->address += output_offset;
871 pvs->offset = view_start;
872 pvs->view_size = view_size;
873 pvs->is_input_output_view = output_offset == invalid_address;
874 pvs->is_postprocessing_view = os->requires_postprocessing();
877 // Actually read the data.
881 std::sort(rm.begin(), rm.end(), Read_multiple_compare());
882 this->read_multiple(rm);
886 // Relocate section data. VIEWS points to the section data as views
887 // in the output file.
889 template<int size, bool big_endian>
891 Sized_relobj_file<size, big_endian>::do_relocate_sections(
892 const Symbol_table* symtab,
893 const Layout* layout,
894 const unsigned char* pshdrs,
898 unsigned int shnum = this->shnum();
899 Sized_target<size, big_endian>* target =
900 parameters->sized_target<size, big_endian>();
902 const Output_sections& out_sections(this->output_sections());
903 const std::vector<Address>& out_offsets(this->section_offsets());
905 Relocate_info<size, big_endian> relinfo;
906 relinfo.symtab = symtab;
907 relinfo.layout = layout;
908 relinfo.object = this;
910 const unsigned char* p = pshdrs + This::shdr_size;
911 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
913 typename This::Shdr shdr(p);
915 unsigned int sh_type = shdr.get_sh_type();
916 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
919 off_t sh_size = shdr.get_sh_size();
923 unsigned int index = this->adjust_shndx(shdr.get_sh_info());
924 if (index >= this->shnum())
926 this->error(_("relocation section %u has bad info %u"),
931 Output_section* os = out_sections[index];
934 // This relocation section is against a section which we
938 Address output_offset = out_offsets[index];
940 gold_assert((*pviews)[index].view != NULL);
941 if (parameters->options().relocatable())
942 gold_assert((*pviews)[i].view != NULL);
944 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
946 gold_error(_("relocation section %u uses unexpected "
948 i, this->adjust_shndx(shdr.get_sh_link()));
952 const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(),
953 sh_size, true, false);
955 unsigned int reloc_size;
956 if (sh_type == elfcpp::SHT_REL)
957 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
959 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
961 if (reloc_size != shdr.get_sh_entsize())
963 gold_error(_("unexpected entsize for reloc section %u: %lu != %u"),
964 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
969 size_t reloc_count = sh_size / reloc_size;
970 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
972 gold_error(_("reloc section %u size %lu uneven"),
973 i, static_cast<unsigned long>(sh_size));
977 gold_assert(output_offset != invalid_address
978 || this->relocs_must_follow_section_writes());
980 relinfo.reloc_shndx = i;
981 relinfo.reloc_shdr = p;
982 relinfo.data_shndx = index;
983 relinfo.data_shdr = pshdrs + index * This::shdr_size;
984 unsigned char* view = (*pviews)[index].view;
985 Address address = (*pviews)[index].address;
986 section_size_type view_size = (*pviews)[index].view_size;
988 Reloc_symbol_changes* reloc_map = NULL;
989 if (this->uses_split_stack() && output_offset != invalid_address)
991 typename This::Shdr data_shdr(pshdrs + index * This::shdr_size);
992 if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0)
993 this->split_stack_adjust(symtab, pshdrs, sh_type, index,
994 prelocs, reloc_count, view, view_size,
998 if (!parameters->options().relocatable())
1000 target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os,
1001 output_offset == invalid_address,
1002 view, address, view_size, reloc_map);
1003 if (parameters->options().emit_relocs())
1004 this->emit_relocs(&relinfo, i, sh_type, prelocs, reloc_count,
1005 os, output_offset, view, address, view_size,
1006 (*pviews)[i].view, (*pviews)[i].view_size);
1007 if (parameters->incremental())
1008 this->incremental_relocs_write(&relinfo, sh_type, prelocs,
1009 reloc_count, os, output_offset, of);
1013 Relocatable_relocs* rr = this->relocatable_relocs(i);
1014 target->relocate_for_relocatable(&relinfo, sh_type, prelocs,
1015 reloc_count, os, output_offset, rr,
1016 view, address, view_size,
1018 (*pviews)[i].view_size);
1023 // Emit the relocs for --emit-relocs.
1025 template<int size, bool big_endian>
1027 Sized_relobj_file<size, big_endian>::emit_relocs(
1028 const Relocate_info<size, big_endian>* relinfo,
1030 unsigned int sh_type,
1031 const unsigned char* prelocs,
1033 Output_section* output_section,
1034 typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section,
1035 unsigned char* view,
1036 typename elfcpp::Elf_types<size>::Elf_Addr address,
1037 section_size_type view_size,
1038 unsigned char* reloc_view,
1039 section_size_type reloc_view_size)
1041 if (sh_type == elfcpp::SHT_REL)
1042 this->emit_relocs_reltype<elfcpp::SHT_REL>(relinfo, i, prelocs,
1043 reloc_count, output_section,
1044 offset_in_output_section,
1045 view, address, view_size,
1046 reloc_view, reloc_view_size);
1049 gold_assert(sh_type == elfcpp::SHT_RELA);
1050 this->emit_relocs_reltype<elfcpp::SHT_RELA>(relinfo, i, prelocs,
1051 reloc_count, output_section,
1052 offset_in_output_section,
1053 view, address, view_size,
1054 reloc_view, reloc_view_size);
1058 // Emit the relocs for --emit-relocs, templatized on the type of the
1059 // relocation section.
1061 template<int size, bool big_endian>
1062 template<int sh_type>
1064 Sized_relobj_file<size, big_endian>::emit_relocs_reltype(
1065 const Relocate_info<size, big_endian>* relinfo,
1067 const unsigned char* prelocs,
1069 Output_section* output_section,
1070 typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section,
1071 unsigned char* view,
1072 typename elfcpp::Elf_types<size>::Elf_Addr address,
1073 section_size_type view_size,
1074 unsigned char* reloc_view,
1075 section_size_type reloc_view_size)
1077 const Relocatable_relocs* rr = this->relocatable_relocs(i);
1078 relocate_for_relocatable<size, big_endian, sh_type>(
1083 offset_in_output_section,
1092 // Write the incremental relocs.
1094 template<int size, bool big_endian>
1096 Sized_relobj_file<size, big_endian>::incremental_relocs_write(
1097 const Relocate_info<size, big_endian>* relinfo,
1098 unsigned int sh_type,
1099 const unsigned char* prelocs,
1101 Output_section* output_section,
1102 Address output_offset,
1105 if (sh_type == elfcpp::SHT_REL)
1106 this->incremental_relocs_write_reltype<elfcpp::SHT_REL>(
1115 gold_assert(sh_type == elfcpp::SHT_RELA);
1116 this->incremental_relocs_write_reltype<elfcpp::SHT_RELA>(
1126 // Write the incremental relocs, templatized on the type of the
1127 // relocation section.
1129 template<int size, bool big_endian>
1130 template<int sh_type>
1132 Sized_relobj_file<size, big_endian>::incremental_relocs_write_reltype(
1133 const Relocate_info<size, big_endian>* relinfo,
1134 const unsigned char* prelocs,
1136 Output_section* output_section,
1137 Address output_offset,
1140 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reloc;
1141 const unsigned int reloc_size =
1142 Reloc_types<sh_type, size, big_endian>::reloc_size;
1143 const unsigned int sizeof_addr = size / 8;
1144 const unsigned int incr_reloc_size =
1145 Incremental_relocs_reader<size, big_endian>::reloc_size;
1147 unsigned int out_shndx = output_section->out_shndx();
1149 // Get a view for the .gnu_incremental_relocs section.
1151 Incremental_inputs* inputs = relinfo->layout->incremental_inputs();
1152 gold_assert(inputs != NULL);
1153 const off_t relocs_off = inputs->relocs_section()->offset();
1154 const off_t relocs_size = inputs->relocs_section()->data_size();
1155 unsigned char* const view = of->get_output_view(relocs_off, relocs_size);
1157 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
1159 Reloc reloc(prelocs);
1161 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1162 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1163 const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
1165 if (r_sym < this->local_symbol_count_)
1168 // Get the new offset--the location in the output section where
1169 // this relocation should be applied.
1171 Address offset = reloc.get_r_offset();
1172 if (output_offset != invalid_address)
1173 offset += output_offset;
1176 section_offset_type sot_offset =
1177 convert_types<section_offset_type, Address>(offset);
1178 section_offset_type new_sot_offset =
1179 output_section->output_offset(relinfo->object,
1180 relinfo->data_shndx,
1182 gold_assert(new_sot_offset != -1);
1183 offset += new_sot_offset;
1187 typename elfcpp::Elf_types<size>::Elf_Swxword addend;
1188 if (sh_type == elfcpp::SHT_RELA)
1190 Reloc_types<sh_type, size, big_endian>::get_reloc_addend(&reloc);
1193 // FIXME: Get the addend for SHT_REL.
1197 // Get the index of the output relocation.
1199 unsigned int reloc_index =
1200 this->next_incremental_reloc_index(r_sym - this->local_symbol_count_);
1202 // Write the relocation.
1204 unsigned char* pov = view + reloc_index * incr_reloc_size;
1205 elfcpp::Swap<32, big_endian>::writeval(pov, r_type);
1206 elfcpp::Swap<32, big_endian>::writeval(pov + 4, out_shndx);
1207 elfcpp::Swap<size, big_endian>::writeval(pov + 8, offset);
1208 elfcpp::Swap<size, big_endian>::writeval(pov + 8 + sizeof_addr, addend);
1209 of->write_output_view(pov - view, incr_reloc_size, view);
1213 // Create merge hash tables for the local symbols. These are used to
1214 // speed up relocations.
1216 template<int size, bool big_endian>
1218 Sized_relobj_file<size, big_endian>::initialize_input_to_output_maps()
1220 const unsigned int loccount = this->local_symbol_count_;
1221 for (unsigned int i = 1; i < loccount; ++i)
1223 Symbol_value<size>& lv(this->local_values_[i]);
1224 lv.initialize_input_to_output_map(this);
1228 // Free merge hash tables for the local symbols.
1230 template<int size, bool big_endian>
1232 Sized_relobj_file<size, big_endian>::free_input_to_output_maps()
1234 const unsigned int loccount = this->local_symbol_count_;
1235 for (unsigned int i = 1; i < loccount; ++i)
1237 Symbol_value<size>& lv(this->local_values_[i]);
1238 lv.free_input_to_output_map();
1242 // If an object was compiled with -fsplit-stack, this is called to
1243 // check whether any relocations refer to functions defined in objects
1244 // which were not compiled with -fsplit-stack. If they were, then we
1245 // need to apply some target-specific adjustments to request
1246 // additional stack space.
1248 template<int size, bool big_endian>
1250 Sized_relobj_file<size, big_endian>::split_stack_adjust(
1251 const Symbol_table* symtab,
1252 const unsigned char* pshdrs,
1253 unsigned int sh_type,
1255 const unsigned char* prelocs,
1257 unsigned char* view,
1258 section_size_type view_size,
1259 Reloc_symbol_changes** reloc_map)
1261 if (sh_type == elfcpp::SHT_REL)
1262 this->split_stack_adjust_reltype<elfcpp::SHT_REL>(symtab, pshdrs, shndx,
1263 prelocs, reloc_count,
1268 gold_assert(sh_type == elfcpp::SHT_RELA);
1269 this->split_stack_adjust_reltype<elfcpp::SHT_RELA>(symtab, pshdrs, shndx,
1270 prelocs, reloc_count,
1276 // Adjust for -fsplit-stack, templatized on the type of the relocation
1279 template<int size, bool big_endian>
1280 template<int sh_type>
1282 Sized_relobj_file<size, big_endian>::split_stack_adjust_reltype(
1283 const Symbol_table* symtab,
1284 const unsigned char* pshdrs,
1286 const unsigned char* prelocs,
1288 unsigned char* view,
1289 section_size_type view_size,
1290 Reloc_symbol_changes** reloc_map)
1292 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
1293 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
1295 size_t local_count = this->local_symbol_count();
1297 std::vector<section_offset_type> non_split_refs;
1299 const unsigned char* pr = prelocs;
1300 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1304 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1305 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1306 if (r_sym < local_count)
1309 const Symbol* gsym = this->global_symbol(r_sym);
1310 gold_assert(gsym != NULL);
1311 if (gsym->is_forwarder())
1312 gsym = symtab->resolve_forwards(gsym);
1314 // See if this relocation refers to a function defined in an
1315 // object compiled without -fsplit-stack. Note that we don't
1316 // care about the type of relocation--this means that in some
1317 // cases we will ask for a large stack unnecessarily, but this
1318 // is not fatal. FIXME: Some targets have symbols which are
1319 // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC.
1320 if (!gsym->is_undefined()
1321 && gsym->source() == Symbol::FROM_OBJECT
1322 && !gsym->object()->uses_split_stack())
1324 unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
1325 if (parameters->target().is_call_to_non_split(gsym, r_type))
1327 section_offset_type offset =
1328 convert_to_section_size_type(reloc.get_r_offset());
1329 non_split_refs.push_back(offset);
1334 if (non_split_refs.empty())
1337 // At this point, every entry in NON_SPLIT_REFS indicates a
1338 // relocation which refers to a function in an object compiled
1339 // without -fsplit-stack. We now have to convert that list into a
1340 // set of offsets to functions. First, we find all the functions.
1342 Function_offsets function_offsets;
1343 this->find_functions(pshdrs, shndx, &function_offsets);
1344 if (function_offsets.empty())
1347 // Now get a list of the function with references to non split-stack
1350 Function_offsets calls_non_split;
1351 for (std::vector<section_offset_type>::const_iterator p
1352 = non_split_refs.begin();
1353 p != non_split_refs.end();
1356 Function_offsets::const_iterator low = function_offsets.lower_bound(*p);
1357 if (low == function_offsets.end())
1359 else if (low->first == *p)
1361 else if (low == function_offsets.begin())
1366 calls_non_split.insert(*low);
1368 if (calls_non_split.empty())
1371 // Now we have a set of functions to adjust. The adjustments are
1372 // target specific. Besides changing the output section view
1373 // however, it likes, the target may request a relocation change
1374 // from one global symbol name to another.
1376 for (Function_offsets::const_iterator p = calls_non_split.begin();
1377 p != calls_non_split.end();
1382 parameters->target().calls_non_split(this, shndx, p->first, p->second,
1383 view, view_size, &from, &to);
1386 gold_assert(!to.empty());
1387 Symbol* tosym = NULL;
1389 // Find relocations in the relevant function which are for
1392 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1396 typename elfcpp::Elf_types<size>::Elf_WXword r_info =
1398 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1399 if (r_sym < local_count)
1402 section_offset_type offset =
1403 convert_to_section_size_type(reloc.get_r_offset());
1404 if (offset < p->first
1407 + static_cast<section_offset_type>(p->second))))
1410 const Symbol* gsym = this->global_symbol(r_sym);
1411 if (from == gsym->name())
1415 tosym = symtab->lookup(to.c_str());
1418 this->error(_("could not convert call "
1420 from.c_str(), to.c_str());
1425 if (*reloc_map == NULL)
1426 *reloc_map = new Reloc_symbol_changes(reloc_count);
1427 (*reloc_map)->set(i, tosym);
1434 // Find all the function in this object defined in section SHNDX.
1435 // Store their offsets in the section in FUNCTION_OFFSETS.
1437 template<int size, bool big_endian>
1439 Sized_relobj_file<size, big_endian>::find_functions(
1440 const unsigned char* pshdrs,
1442 Sized_relobj_file<size, big_endian>::Function_offsets* function_offsets)
1444 // We need to read the symbols to find the functions. If we wanted
1445 // to, we could cache reading the symbols across all sections in the
1447 const unsigned int symtab_shndx = this->symtab_shndx_;
1448 typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size);
1449 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
1451 typename elfcpp::Elf_types<size>::Elf_WXword sh_size =
1452 symtabshdr.get_sh_size();
1453 const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
1454 sh_size, true, true);
1456 const int sym_size = This::sym_size;
1457 const unsigned int symcount = sh_size / sym_size;
1458 for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size)
1460 typename elfcpp::Sym<size, big_endian> isym(psyms);
1462 // FIXME: Some targets can have functions which do not have type
1463 // STT_FUNC, e.g., STT_ARM_TFUNC.
1464 if (isym.get_st_type() != elfcpp::STT_FUNC
1465 || isym.get_st_size() == 0)
1469 unsigned int sym_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
1471 if (!is_ordinary || sym_shndx != shndx)
1474 section_offset_type value =
1475 convert_to_section_size_type(isym.get_st_value());
1476 section_size_type fnsize =
1477 convert_to_section_size_type(isym.get_st_size());
1479 (*function_offsets)[value] = fnsize;
1483 // Class Merged_symbol_value.
1487 Merged_symbol_value<size>::initialize_input_to_output_map(
1488 const Relobj* object,
1489 unsigned int input_shndx)
1491 Object_merge_map* map = object->merge_map();
1492 map->initialize_input_to_output_map<size>(input_shndx,
1493 this->output_start_address_,
1494 &this->output_addresses_);
1497 // Get the output value corresponding to an input offset if we
1498 // couldn't find it in the hash table.
1501 typename elfcpp::Elf_types<size>::Elf_Addr
1502 Merged_symbol_value<size>::value_from_output_section(
1503 const Relobj* object,
1504 unsigned int input_shndx,
1505 typename elfcpp::Elf_types<size>::Elf_Addr input_offset) const
1507 section_offset_type output_offset;
1508 bool found = object->merge_map()->get_output_offset(NULL, input_shndx,
1512 // If this assertion fails, it means that some relocation was
1513 // against a portion of an input merge section which we didn't map
1514 // to the output file and we didn't explicitly discard. We should
1515 // always map all portions of input merge sections.
1518 if (output_offset == -1)
1521 return this->output_start_address_ + output_offset;
1524 // Track_relocs methods.
1526 // Initialize the class to track the relocs. This gets the object,
1527 // the reloc section index, and the type of the relocs. This returns
1528 // false if something goes wrong.
1530 template<int size, bool big_endian>
1532 Track_relocs<size, big_endian>::initialize(
1534 unsigned int reloc_shndx,
1535 unsigned int reloc_type)
1537 // If RELOC_SHNDX is -1U, it means there is more than one reloc
1538 // section for the .eh_frame section. We can't handle that case.
1539 if (reloc_shndx == -1U)
1542 // If RELOC_SHNDX is 0, there is no reloc section.
1543 if (reloc_shndx == 0)
1546 // Get the contents of the reloc section.
1547 this->prelocs_ = object->section_contents(reloc_shndx, &this->len_, false);
1549 if (reloc_type == elfcpp::SHT_REL)
1550 this->reloc_size_ = elfcpp::Elf_sizes<size>::rel_size;
1551 else if (reloc_type == elfcpp::SHT_RELA)
1552 this->reloc_size_ = elfcpp::Elf_sizes<size>::rela_size;
1556 if (this->len_ % this->reloc_size_ != 0)
1558 object->error(_("reloc section size %zu is not a multiple of "
1560 static_cast<size_t>(this->len_),
1568 // Return the offset of the next reloc, or -1 if there isn't one.
1570 template<int size, bool big_endian>
1572 Track_relocs<size, big_endian>::next_offset() const
1574 if (this->pos_ >= this->len_)
1577 // Rel and Rela start out the same, so we can always use Rel to find
1578 // the r_offset value.
1579 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1580 return rel.get_r_offset();
1583 // Return the index of the symbol referenced by the next reloc, or -1U
1584 // if there aren't any more relocs.
1586 template<int size, bool big_endian>
1588 Track_relocs<size, big_endian>::next_symndx() const
1590 if (this->pos_ >= this->len_)
1593 // Rel and Rela start out the same, so we can use Rel to find the
1595 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1596 return elfcpp::elf_r_sym<size>(rel.get_r_info());
1599 // Return the addend of the next reloc, or 0 if there isn't one.
1601 template<int size, bool big_endian>
1603 Track_relocs<size, big_endian>::next_addend() const
1605 if (this->pos_ >= this->len_)
1607 if (this->reloc_size_ == elfcpp::Elf_sizes<size>::rel_size)
1609 elfcpp::Rela<size, big_endian> rela(this->prelocs_ + this->pos_);
1610 return rela.get_r_addend();
1613 // Advance to the next reloc whose r_offset is greater than or equal
1614 // to OFFSET. Return the number of relocs we skip.
1616 template<int size, bool big_endian>
1618 Track_relocs<size, big_endian>::advance(off_t offset)
1621 while (this->pos_ < this->len_)
1623 // Rel and Rela start out the same, so we can always use Rel to
1624 // find the r_offset value.
1625 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1626 if (static_cast<off_t>(rel.get_r_offset()) >= offset)
1629 this->pos_ += this->reloc_size_;
1634 // Instantiate the templates we need.
1636 #ifdef HAVE_TARGET_32_LITTLE
1639 Sized_relobj_file<32, false>::do_read_relocs(Read_relocs_data* rd);
1642 #ifdef HAVE_TARGET_32_BIG
1645 Sized_relobj_file<32, true>::do_read_relocs(Read_relocs_data* rd);
1648 #ifdef HAVE_TARGET_64_LITTLE
1651 Sized_relobj_file<64, false>::do_read_relocs(Read_relocs_data* rd);
1654 #ifdef HAVE_TARGET_64_BIG
1657 Sized_relobj_file<64, true>::do_read_relocs(Read_relocs_data* rd);
1660 #ifdef HAVE_TARGET_32_LITTLE
1663 Sized_relobj_file<32, false>::do_gc_process_relocs(Symbol_table* symtab,
1665 Read_relocs_data* rd);
1668 #ifdef HAVE_TARGET_32_BIG
1671 Sized_relobj_file<32, true>::do_gc_process_relocs(Symbol_table* symtab,
1673 Read_relocs_data* rd);
1676 #ifdef HAVE_TARGET_64_LITTLE
1679 Sized_relobj_file<64, false>::do_gc_process_relocs(Symbol_table* symtab,
1681 Read_relocs_data* rd);
1684 #ifdef HAVE_TARGET_64_BIG
1687 Sized_relobj_file<64, true>::do_gc_process_relocs(Symbol_table* symtab,
1689 Read_relocs_data* rd);
1692 #ifdef HAVE_TARGET_32_LITTLE
1695 Sized_relobj_file<32, false>::do_scan_relocs(Symbol_table* symtab,
1697 Read_relocs_data* rd);
1700 #ifdef HAVE_TARGET_32_BIG
1703 Sized_relobj_file<32, true>::do_scan_relocs(Symbol_table* symtab,
1705 Read_relocs_data* rd);
1708 #ifdef HAVE_TARGET_64_LITTLE
1711 Sized_relobj_file<64, false>::do_scan_relocs(Symbol_table* symtab,
1713 Read_relocs_data* rd);
1716 #ifdef HAVE_TARGET_64_BIG
1719 Sized_relobj_file<64, true>::do_scan_relocs(Symbol_table* symtab,
1721 Read_relocs_data* rd);
1724 #ifdef HAVE_TARGET_32_LITTLE
1727 Sized_relobj_file<32, false>::do_relocate(const Symbol_table* symtab,
1728 const Layout* layout,
1732 #ifdef HAVE_TARGET_32_BIG
1735 Sized_relobj_file<32, true>::do_relocate(const Symbol_table* symtab,
1736 const Layout* layout,
1740 #ifdef HAVE_TARGET_64_LITTLE
1743 Sized_relobj_file<64, false>::do_relocate(const Symbol_table* symtab,
1744 const Layout* layout,
1748 #ifdef HAVE_TARGET_64_BIG
1751 Sized_relobj_file<64, true>::do_relocate(const Symbol_table* symtab,
1752 const Layout* layout,
1756 #ifdef HAVE_TARGET_32_LITTLE
1759 Sized_relobj_file<32, false>::do_relocate_sections(
1760 const Symbol_table* symtab,
1761 const Layout* layout,
1762 const unsigned char* pshdrs,
1767 #ifdef HAVE_TARGET_32_BIG
1770 Sized_relobj_file<32, true>::do_relocate_sections(
1771 const Symbol_table* symtab,
1772 const Layout* layout,
1773 const unsigned char* pshdrs,
1778 #ifdef HAVE_TARGET_64_LITTLE
1781 Sized_relobj_file<64, false>::do_relocate_sections(
1782 const Symbol_table* symtab,
1783 const Layout* layout,
1784 const unsigned char* pshdrs,
1789 #ifdef HAVE_TARGET_64_BIG
1792 Sized_relobj_file<64, true>::do_relocate_sections(
1793 const Symbol_table* symtab,
1794 const Layout* layout,
1795 const unsigned char* pshdrs,
1800 #ifdef HAVE_TARGET_32_LITTLE
1803 Sized_relobj_file<32, false>::initialize_input_to_output_maps();
1807 Sized_relobj_file<32, false>::free_input_to_output_maps();
1810 #ifdef HAVE_TARGET_32_BIG
1813 Sized_relobj_file<32, true>::initialize_input_to_output_maps();
1817 Sized_relobj_file<32, true>::free_input_to_output_maps();
1820 #ifdef HAVE_TARGET_64_LITTLE
1823 Sized_relobj_file<64, false>::initialize_input_to_output_maps();
1827 Sized_relobj_file<64, false>::free_input_to_output_maps();
1830 #ifdef HAVE_TARGET_64_BIG
1833 Sized_relobj_file<64, true>::initialize_input_to_output_maps();
1837 Sized_relobj_file<64, true>::free_input_to_output_maps();
1840 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1842 class Merged_symbol_value<32>;
1845 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1847 class Merged_symbol_value<64>;
1850 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1852 class Symbol_value<32>;
1855 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1857 class Symbol_value<64>;
1860 #ifdef HAVE_TARGET_32_LITTLE
1862 class Track_relocs<32, false>;
1865 #ifdef HAVE_TARGET_32_BIG
1867 class Track_relocs<32, true>;
1870 #ifdef HAVE_TARGET_64_LITTLE
1872 class Track_relocs<64, false>;
1875 #ifdef HAVE_TARGET_64_BIG
1877 class Track_relocs<64, true>;
1880 } // End namespace gold.