1 // reloc.cc -- relocate input files for gold.
3 // Copyright (C) 2006-2016 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 // Scan the input relocations for --emit-relocs.
506 template<int size, bool big_endian>
508 Sized_relobj_file<size, big_endian>::emit_relocs_scan(
509 Symbol_table* symtab,
511 const unsigned char* plocal_syms,
512 const Read_relocs_data::Relocs_list::iterator& p)
514 Sized_target<size, big_endian>* target =
515 parameters->sized_target<size, big_endian>();
517 Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
518 gold_assert(rr != NULL);
519 rr->set_reloc_count(p->reloc_count);
520 target->emit_relocs_scan(
529 p->needs_special_offset_handling,
530 this->local_symbol_count_,
535 // Scan the input relocations for --incremental.
537 template<int size, bool big_endian>
539 Sized_relobj_file<size, big_endian>::incremental_relocs_scan(
540 const Read_relocs_data::Relocs_list::iterator& p)
542 if (p->sh_type == elfcpp::SHT_REL)
543 this->incremental_relocs_scan_reltype<elfcpp::SHT_REL>(p);
546 gold_assert(p->sh_type == elfcpp::SHT_RELA);
547 this->incremental_relocs_scan_reltype<elfcpp::SHT_RELA>(p);
551 // Scan the input relocation for --incremental, templatized on the
552 // type of the relocation section.
554 template<int size, bool big_endian>
555 template<int sh_type>
557 Sized_relobj_file<size, big_endian>::incremental_relocs_scan_reltype(
558 const Read_relocs_data::Relocs_list::iterator& p)
560 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
561 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
562 const unsigned char* prelocs = p->contents->data();
563 size_t reloc_count = p->reloc_count;
565 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
567 Reltype reloc(prelocs);
569 if (p->needs_special_offset_handling
570 && !p->output_section->is_input_address_mapped(this, p->data_shndx,
571 reloc.get_r_offset()))
574 // FIXME: Some targets have a non-standard r_info field.
575 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
576 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
578 if (r_sym >= this->local_symbol_count_)
579 this->count_incremental_reloc(r_sym - this->local_symbol_count_);
583 // Relocate the input sections and write out the local symbols.
585 template<int size, bool big_endian>
587 Sized_relobj_file<size, big_endian>::do_relocate(const Symbol_table* symtab,
588 const Layout* layout,
591 unsigned int shnum = this->shnum();
593 // Read the section headers.
594 const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(),
595 shnum * This::shdr_size,
601 // Make two passes over the sections. The first one copies the
602 // section data to the output file. The second one applies
605 this->write_sections(layout, pshdrs, of, &views);
607 // To speed up relocations, we set up hash tables for fast lookup of
608 // input offsets to output addresses.
609 this->initialize_input_to_output_maps();
611 // Make the views available through get_output_view() for the duration
612 // of this routine. This RAII class will reset output_views_ to NULL
613 // when the views go out of scope.
614 struct Set_output_views
616 Set_output_views(const Views** ppviews, const Views* pviews)
623 { *ppviews_ = NULL; }
625 const Views** ppviews_;
627 Set_output_views set_output_views(&this->output_views_, &views);
629 // Apply relocations.
631 this->relocate_sections(symtab, layout, pshdrs, of, &views);
633 // After we've done the relocations, we release the hash tables,
634 // since we no longer need them.
635 this->free_input_to_output_maps();
637 // Write out the accumulated views.
638 for (unsigned int i = 1; i < shnum; ++i)
640 if (views[i].view != NULL)
642 if (views[i].is_ctors_reverse_view)
643 this->reverse_words(views[i].view, views[i].view_size);
644 if (!views[i].is_postprocessing_view)
646 if (views[i].is_input_output_view)
647 of->write_input_output_view(views[i].offset,
651 of->write_output_view(views[i].offset, views[i].view_size,
657 // Write out the local symbols.
658 this->write_local_symbols(of, layout->sympool(), layout->dynpool(),
659 layout->symtab_xindex(), layout->dynsym_xindex(),
660 layout->symtab_section_offset());
663 // Sort a Read_multiple vector by file offset.
664 struct Read_multiple_compare
667 operator()(const File_read::Read_multiple_entry& rme1,
668 const File_read::Read_multiple_entry& rme2) const
669 { return rme1.file_offset < rme2.file_offset; }
672 // Write section data to the output file. PSHDRS points to the
673 // section headers. Record the views in *PVIEWS for use when
676 template<int size, bool big_endian>
678 Sized_relobj_file<size, big_endian>::write_sections(const Layout* layout,
679 const unsigned char* pshdrs,
683 unsigned int shnum = this->shnum();
684 const Output_sections& out_sections(this->output_sections());
685 const std::vector<Address>& out_offsets(this->section_offsets());
687 File_read::Read_multiple rm;
688 bool is_sorted = true;
690 const unsigned char* p = pshdrs + This::shdr_size;
691 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
693 View_size* pvs = &(*pviews)[i];
697 const Output_section* os = out_sections[i];
700 Address output_offset = out_offsets[i];
702 typename This::Shdr shdr(p);
704 if (shdr.get_sh_type() == elfcpp::SHT_NOBITS)
707 if ((parameters->options().relocatable()
708 || parameters->options().emit_relocs())
709 && (shdr.get_sh_type() == elfcpp::SHT_REL
710 || shdr.get_sh_type() == elfcpp::SHT_RELA)
711 && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0)
713 // This is a reloc section in a relocatable link or when
714 // emitting relocs. We don't need to read the input file.
715 // The size and file offset are stored in the
716 // Relocatable_relocs structure.
717 Relocatable_relocs* rr = this->relocatable_relocs(i);
718 gold_assert(rr != NULL);
719 Output_data* posd = rr->output_data();
720 gold_assert(posd != NULL);
722 pvs->offset = posd->offset();
723 pvs->view_size = posd->data_size();
724 pvs->view = of->get_output_view(pvs->offset, pvs->view_size);
725 pvs->address = posd->address();
726 pvs->is_input_output_view = false;
727 pvs->is_postprocessing_view = false;
728 pvs->is_ctors_reverse_view = false;
733 // In the normal case, this input section is simply mapped to
734 // the output section at offset OUTPUT_OFFSET.
736 // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is
737 // handled specially--e.g., a .eh_frame section. The relocation
738 // routines need to check for each reloc where it should be
739 // applied. For this case, we need an input/output view for the
740 // entire contents of the section in the output file. We don't
741 // want to copy the contents of the input section to the output
742 // section; the output section contents were already written,
743 // and we waited for them in Relocate_task::is_runnable because
744 // relocs_must_follow_section_writes is set for the object.
746 // Regardless of which of the above cases is true, we have to
747 // check requires_postprocessing of the output section. If that
748 // is false, then we work with views of the output file
749 // directly. If it is true, then we work with a separate
750 // buffer, and the output section is responsible for writing the
751 // final data to the output file.
753 off_t output_section_offset;
754 Address output_section_size;
755 if (!os->requires_postprocessing())
757 output_section_offset = os->offset();
758 output_section_size = convert_types<Address, off_t>(os->data_size());
762 output_section_offset = 0;
763 output_section_size =
764 convert_types<Address, off_t>(os->postprocessing_buffer_size());
768 section_size_type view_size;
769 bool must_decompress = false;
770 if (output_offset != invalid_address)
772 view_start = output_section_offset + output_offset;
773 view_size = convert_to_section_size_type(shdr.get_sh_size());
774 section_size_type uncompressed_size;
775 if (this->section_is_compressed(i, &uncompressed_size))
777 view_size = uncompressed_size;
778 must_decompress = true;
783 view_start = output_section_offset;
784 view_size = convert_to_section_size_type(output_section_size);
790 gold_assert(output_offset == invalid_address
791 || output_offset + view_size <= output_section_size);
794 if (os->requires_postprocessing())
796 unsigned char* buffer = os->postprocessing_buffer();
797 view = buffer + view_start;
798 if (output_offset != invalid_address && !must_decompress)
800 off_t sh_offset = shdr.get_sh_offset();
801 if (!rm.empty() && rm.back().file_offset > sh_offset)
803 rm.push_back(File_read::Read_multiple_entry(sh_offset,
809 if (output_offset == invalid_address)
810 view = of->get_input_output_view(view_start, view_size);
813 view = of->get_output_view(view_start, view_size);
814 if (!must_decompress)
816 off_t sh_offset = shdr.get_sh_offset();
817 if (!rm.empty() && rm.back().file_offset > sh_offset)
819 rm.push_back(File_read::Read_multiple_entry(sh_offset,
827 // Read and decompress the section.
828 section_size_type len;
829 const unsigned char* p = this->section_contents(i, &len, false);
830 if (!decompress_input_section(p, len, view, view_size,
832 shdr.get_sh_flags()))
833 this->error(_("could not decompress section %s"),
834 this->section_name(i).c_str());
838 pvs->address = os->address();
839 if (output_offset != invalid_address)
840 pvs->address += output_offset;
841 pvs->offset = view_start;
842 pvs->view_size = view_size;
843 pvs->is_input_output_view = output_offset == invalid_address;
844 pvs->is_postprocessing_view = os->requires_postprocessing();
845 pvs->is_ctors_reverse_view =
846 (!parameters->options().relocatable()
847 && view_size > size / 8
848 && (strcmp(os->name(), ".init_array") == 0
849 || strcmp(os->name(), ".fini_array") == 0)
850 && layout->is_ctors_in_init_array(this, i));
853 // Actually read the data.
857 std::sort(rm.begin(), rm.end(), Read_multiple_compare());
858 this->read_multiple(rm);
862 // Relocate section data. VIEWS points to the section data as views
863 // in the output file.
865 template<int size, bool big_endian>
867 Sized_relobj_file<size, big_endian>::do_relocate_sections(
868 const Symbol_table* symtab,
869 const Layout* layout,
870 const unsigned char* pshdrs,
874 unsigned int shnum = this->shnum();
875 Sized_target<size, big_endian>* target =
876 parameters->sized_target<size, big_endian>();
878 const Output_sections& out_sections(this->output_sections());
879 const std::vector<Address>& out_offsets(this->section_offsets());
881 Relocate_info<size, big_endian> relinfo;
882 relinfo.symtab = symtab;
883 relinfo.layout = layout;
884 relinfo.object = this;
886 const unsigned char* p = pshdrs + This::shdr_size;
887 for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size)
889 typename This::Shdr shdr(p);
891 unsigned int sh_type = shdr.get_sh_type();
892 if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA)
895 off_t sh_size = shdr.get_sh_size();
899 unsigned int index = this->adjust_shndx(shdr.get_sh_info());
900 if (index >= this->shnum())
902 this->error(_("relocation section %u has bad info %u"),
907 Output_section* os = out_sections[index];
910 // This relocation section is against a section which we
914 Address output_offset = out_offsets[index];
916 gold_assert((*pviews)[index].view != NULL);
917 if (parameters->options().relocatable())
918 gold_assert((*pviews)[i].view != NULL);
920 if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_)
922 gold_error(_("relocation section %u uses unexpected "
924 i, this->adjust_shndx(shdr.get_sh_link()));
928 const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(),
929 sh_size, true, false);
931 unsigned int reloc_size;
932 if (sh_type == elfcpp::SHT_REL)
933 reloc_size = elfcpp::Elf_sizes<size>::rel_size;
935 reloc_size = elfcpp::Elf_sizes<size>::rela_size;
937 if (reloc_size != shdr.get_sh_entsize())
939 gold_error(_("unexpected entsize for reloc section %u: %lu != %u"),
940 i, static_cast<unsigned long>(shdr.get_sh_entsize()),
945 size_t reloc_count = sh_size / reloc_size;
946 if (static_cast<off_t>(reloc_count * reloc_size) != sh_size)
948 gold_error(_("reloc section %u size %lu uneven"),
949 i, static_cast<unsigned long>(sh_size));
953 gold_assert(output_offset != invalid_address
954 || this->relocs_must_follow_section_writes());
956 relinfo.reloc_shndx = i;
957 relinfo.reloc_shdr = p;
958 relinfo.data_shndx = index;
959 relinfo.data_shdr = pshdrs + index * This::shdr_size;
960 unsigned char* view = (*pviews)[index].view;
961 Address address = (*pviews)[index].address;
962 section_size_type view_size = (*pviews)[index].view_size;
964 Reloc_symbol_changes* reloc_map = NULL;
965 if (this->uses_split_stack() && output_offset != invalid_address)
967 typename This::Shdr data_shdr(pshdrs + index * This::shdr_size);
968 if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0)
969 this->split_stack_adjust(symtab, pshdrs, sh_type, index,
970 prelocs, reloc_count, view, view_size,
974 Relocatable_relocs* rr = NULL;
975 if (parameters->options().emit_relocs()
976 || parameters->options().relocatable())
977 rr = this->relocatable_relocs(i);
980 if (!parameters->options().relocatable())
982 target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os,
983 output_offset == invalid_address,
984 view, address, view_size, reloc_map);
985 if (parameters->options().emit_relocs())
986 target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count,
988 view, address, view_size,
990 (*pviews)[i].view_size);
991 if (parameters->incremental())
992 this->incremental_relocs_write(&relinfo, sh_type, prelocs,
993 reloc_count, os, output_offset, of);
996 target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count,
998 view, address, view_size,
1000 (*pviews)[i].view_size);
1004 // Return the output view for section SHNDX.
1006 template<int size, bool big_endian>
1008 Sized_relobj_file<size, big_endian>::do_get_output_view(
1010 section_size_type* plen) const
1012 gold_assert(this->output_views_ != NULL);
1013 gold_assert(shndx < this->output_views_->size());
1014 const View_size& v = (*this->output_views_)[shndx];
1015 *plen = v.view_size;
1019 // Write the incremental relocs.
1021 template<int size, bool big_endian>
1023 Sized_relobj_file<size, big_endian>::incremental_relocs_write(
1024 const Relocate_info<size, big_endian>* relinfo,
1025 unsigned int sh_type,
1026 const unsigned char* prelocs,
1028 Output_section* output_section,
1029 Address output_offset,
1032 if (sh_type == elfcpp::SHT_REL)
1033 this->incremental_relocs_write_reltype<elfcpp::SHT_REL>(
1042 gold_assert(sh_type == elfcpp::SHT_RELA);
1043 this->incremental_relocs_write_reltype<elfcpp::SHT_RELA>(
1053 // Write the incremental relocs, templatized on the type of the
1054 // relocation section.
1056 template<int size, bool big_endian>
1057 template<int sh_type>
1059 Sized_relobj_file<size, big_endian>::incremental_relocs_write_reltype(
1060 const Relocate_info<size, big_endian>* relinfo,
1061 const unsigned char* prelocs,
1063 Output_section* output_section,
1064 Address output_offset,
1067 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reloc;
1068 const unsigned int reloc_size =
1069 Reloc_types<sh_type, size, big_endian>::reloc_size;
1070 const unsigned int sizeof_addr = size / 8;
1071 const unsigned int incr_reloc_size =
1072 Incremental_relocs_reader<size, big_endian>::reloc_size;
1074 unsigned int out_shndx = output_section->out_shndx();
1076 // Get a view for the .gnu_incremental_relocs section.
1078 Incremental_inputs* inputs = relinfo->layout->incremental_inputs();
1079 gold_assert(inputs != NULL);
1080 const off_t relocs_off = inputs->relocs_section()->offset();
1081 const off_t relocs_size = inputs->relocs_section()->data_size();
1082 unsigned char* const view = of->get_output_view(relocs_off, relocs_size);
1084 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
1086 Reloc reloc(prelocs);
1088 // FIXME: Some targets have a non-standard r_info field.
1089 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
1090 const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1091 const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
1093 if (r_sym < this->local_symbol_count_)
1096 // Get the new offset--the location in the output section where
1097 // this relocation should be applied.
1099 Address offset = reloc.get_r_offset();
1100 if (output_offset != invalid_address)
1101 offset += output_offset;
1104 section_offset_type sot_offset =
1105 convert_types<section_offset_type, Address>(offset);
1106 section_offset_type new_sot_offset =
1107 output_section->output_offset(relinfo->object,
1108 relinfo->data_shndx,
1110 gold_assert(new_sot_offset != -1);
1111 offset += new_sot_offset;
1115 typename elfcpp::Elf_types<size>::Elf_Swxword addend;
1116 if (sh_type == elfcpp::SHT_RELA)
1118 Reloc_types<sh_type, size, big_endian>::get_reloc_addend(&reloc);
1121 // FIXME: Get the addend for SHT_REL.
1125 // Get the index of the output relocation.
1127 unsigned int reloc_index =
1128 this->next_incremental_reloc_index(r_sym - this->local_symbol_count_);
1130 // Write the relocation.
1132 unsigned char* pov = view + reloc_index * incr_reloc_size;
1133 elfcpp::Swap<32, big_endian>::writeval(pov, r_type);
1134 elfcpp::Swap<32, big_endian>::writeval(pov + 4, out_shndx);
1135 elfcpp::Swap<size, big_endian>::writeval(pov + 8, offset);
1136 elfcpp::Swap<size, big_endian>::writeval(pov + 8 + sizeof_addr, addend);
1137 of->write_output_view(pov - view, incr_reloc_size, view);
1141 // Create merge hash tables for the local symbols. These are used to
1142 // speed up relocations.
1144 template<int size, bool big_endian>
1146 Sized_relobj_file<size, big_endian>::initialize_input_to_output_maps()
1148 const unsigned int loccount = this->local_symbol_count_;
1149 for (unsigned int i = 1; i < loccount; ++i)
1151 Symbol_value<size>& lv(this->local_values_[i]);
1152 lv.initialize_input_to_output_map(this);
1156 // Free merge hash tables for the local symbols.
1158 template<int size, bool big_endian>
1160 Sized_relobj_file<size, big_endian>::free_input_to_output_maps()
1162 const unsigned int loccount = this->local_symbol_count_;
1163 for (unsigned int i = 1; i < loccount; ++i)
1165 Symbol_value<size>& lv(this->local_values_[i]);
1166 lv.free_input_to_output_map();
1170 // If an object was compiled with -fsplit-stack, this is called to
1171 // check whether any relocations refer to functions defined in objects
1172 // which were not compiled with -fsplit-stack. If they were, then we
1173 // need to apply some target-specific adjustments to request
1174 // additional stack space.
1176 template<int size, bool big_endian>
1178 Sized_relobj_file<size, big_endian>::split_stack_adjust(
1179 const Symbol_table* symtab,
1180 const unsigned char* pshdrs,
1181 unsigned int sh_type,
1183 const unsigned char* prelocs,
1185 unsigned char* view,
1186 section_size_type view_size,
1187 Reloc_symbol_changes** reloc_map,
1188 const Sized_target<size, big_endian>* target)
1190 if (sh_type == elfcpp::SHT_REL)
1191 this->split_stack_adjust_reltype<elfcpp::SHT_REL>(symtab, pshdrs, shndx,
1192 prelocs, reloc_count,
1197 gold_assert(sh_type == elfcpp::SHT_RELA);
1198 this->split_stack_adjust_reltype<elfcpp::SHT_RELA>(symtab, pshdrs, shndx,
1199 prelocs, reloc_count,
1205 // Adjust for -fsplit-stack, templatized on the type of the relocation
1208 template<int size, bool big_endian>
1209 template<int sh_type>
1211 Sized_relobj_file<size, big_endian>::split_stack_adjust_reltype(
1212 const Symbol_table* symtab,
1213 const unsigned char* pshdrs,
1215 const unsigned char* prelocs,
1217 unsigned char* view,
1218 section_size_type view_size,
1219 Reloc_symbol_changes** reloc_map,
1220 const Sized_target<size, big_endian>* target)
1222 typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
1223 const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
1225 size_t local_count = this->local_symbol_count();
1227 std::vector<section_offset_type> non_split_refs;
1229 const unsigned char* pr = prelocs;
1230 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1232 // Some supported targets have a non-standard r_info field.
1233 // If this call is too slow, we can move this routine to
1234 // target-reloc.h and templatize it on Classify_reloc.
1235 unsigned int r_sym = target->get_r_sym(pr);
1236 if (r_sym < local_count)
1239 const Symbol* gsym = this->global_symbol(r_sym);
1240 gold_assert(gsym != NULL);
1241 if (gsym->is_forwarder())
1242 gsym = symtab->resolve_forwards(gsym);
1244 // See if this relocation refers to a function defined in an
1245 // object compiled without -fsplit-stack. Note that we don't
1246 // care about the type of relocation--this means that in some
1247 // cases we will ask for a large stack unnecessarily, but this
1248 // is not fatal. FIXME: Some targets have symbols which are
1249 // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC.
1250 if (!gsym->is_undefined()
1251 && gsym->source() == Symbol::FROM_OBJECT
1252 && !gsym->object()->uses_split_stack())
1254 if (parameters->target().is_call_to_non_split(gsym, pr, view,
1258 section_offset_type offset =
1259 convert_to_section_size_type(reloc.get_r_offset());
1260 non_split_refs.push_back(offset);
1265 if (non_split_refs.empty())
1268 // At this point, every entry in NON_SPLIT_REFS indicates a
1269 // relocation which refers to a function in an object compiled
1270 // without -fsplit-stack. We now have to convert that list into a
1271 // set of offsets to functions. First, we find all the functions.
1273 Function_offsets function_offsets;
1274 this->find_functions(pshdrs, shndx, &function_offsets);
1275 if (function_offsets.empty())
1278 // Now get a list of the function with references to non split-stack
1281 Function_offsets calls_non_split;
1282 for (std::vector<section_offset_type>::const_iterator p
1283 = non_split_refs.begin();
1284 p != non_split_refs.end();
1287 Function_offsets::const_iterator low = function_offsets.lower_bound(*p);
1288 if (low == function_offsets.end())
1290 else if (low->first == *p)
1292 else if (low == function_offsets.begin())
1297 calls_non_split.insert(*low);
1299 if (calls_non_split.empty())
1302 // Now we have a set of functions to adjust. The adjustments are
1303 // target specific. Besides changing the output section view
1304 // however, it likes, the target may request a relocation change
1305 // from one global symbol name to another.
1307 for (Function_offsets::const_iterator p = calls_non_split.begin();
1308 p != calls_non_split.end();
1313 parameters->target().calls_non_split(this, shndx, p->first, p->second,
1314 prelocs, reloc_count,
1315 view, view_size, &from, &to);
1318 gold_assert(!to.empty());
1319 Symbol* tosym = NULL;
1321 // Find relocations in the relevant function which are for
1324 for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size)
1328 unsigned int r_sym = target->get_r_sym(pr);
1329 if (r_sym < local_count)
1332 section_offset_type offset =
1333 convert_to_section_size_type(reloc.get_r_offset());
1334 if (offset < p->first
1337 + static_cast<section_offset_type>(p->second))))
1340 const Symbol* gsym = this->global_symbol(r_sym);
1341 if (from == gsym->name())
1345 tosym = symtab->lookup(to.c_str());
1348 this->error(_("could not convert call "
1350 from.c_str(), to.c_str());
1355 if (*reloc_map == NULL)
1356 *reloc_map = new Reloc_symbol_changes(reloc_count);
1357 (*reloc_map)->set(i, tosym);
1364 // Find all the function in this object defined in section SHNDX.
1365 // Store their offsets in the section in FUNCTION_OFFSETS.
1367 template<int size, bool big_endian>
1369 Sized_relobj_file<size, big_endian>::find_functions(
1370 const unsigned char* pshdrs,
1372 Sized_relobj_file<size, big_endian>::Function_offsets* function_offsets)
1374 // We need to read the symbols to find the functions. If we wanted
1375 // to, we could cache reading the symbols across all sections in the
1377 const unsigned int symtab_shndx = this->symtab_shndx_;
1378 typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size);
1379 gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB);
1381 typename elfcpp::Elf_types<size>::Elf_WXword sh_size =
1382 symtabshdr.get_sh_size();
1383 const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
1384 sh_size, true, true);
1386 const int sym_size = This::sym_size;
1387 const unsigned int symcount = sh_size / sym_size;
1388 for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size)
1390 typename elfcpp::Sym<size, big_endian> isym(psyms);
1392 // FIXME: Some targets can have functions which do not have type
1393 // STT_FUNC, e.g., STT_ARM_TFUNC.
1394 if (isym.get_st_type() != elfcpp::STT_FUNC
1395 || isym.get_st_size() == 0)
1399 Symbol_location loc;
1400 loc.shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
1406 loc.offset = isym.get_st_value();
1407 parameters->target().function_location(&loc);
1409 if (loc.shndx != shndx)
1412 section_offset_type value =
1413 convert_to_section_size_type(loc.offset);
1414 section_size_type fnsize =
1415 convert_to_section_size_type(isym.get_st_size());
1417 (*function_offsets)[value] = fnsize;
1421 // Reverse the words in a section. Used for .ctors sections mapped to
1422 // .init_array sections. See ctors_sections_in_init_array in
1425 template<int size, bool big_endian>
1427 Sized_relobj_file<size, big_endian>::reverse_words(unsigned char* view,
1428 section_size_type view_size)
1430 typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
1431 Valtype* vview = reinterpret_cast<Valtype*>(view);
1432 section_size_type vview_size = view_size / (size / 8);
1433 for (section_size_type i = 0; i < vview_size / 2; ++i)
1435 Valtype tmp = vview[i];
1436 vview[i] = vview[vview_size - 1 - i];
1437 vview[vview_size - 1 - i] = tmp;
1441 // Class Merged_symbol_value.
1445 Merged_symbol_value<size>::initialize_input_to_output_map(
1446 const Relobj* object,
1447 unsigned int input_shndx)
1449 object->initialize_input_to_output_map<size>(input_shndx,
1450 this->output_start_address_,
1451 &this->output_addresses_);
1454 // Get the output value corresponding to an input offset if we
1455 // couldn't find it in the hash table.
1458 typename elfcpp::Elf_types<size>::Elf_Addr
1459 Merged_symbol_value<size>::value_from_output_section(
1460 const Relobj* object,
1461 unsigned int input_shndx,
1462 typename elfcpp::Elf_types<size>::Elf_Addr input_offset) const
1464 section_offset_type output_offset;
1465 bool found = object->merge_output_offset(input_shndx, input_offset,
1468 // If this assertion fails, it means that some relocation was
1469 // against a portion of an input merge section which we didn't map
1470 // to the output file and we didn't explicitly discard. We should
1471 // always map all portions of input merge sections.
1474 if (output_offset == -1)
1477 return this->output_start_address_ + output_offset;
1480 // Track_relocs methods.
1482 // Initialize the class to track the relocs. This gets the object,
1483 // the reloc section index, and the type of the relocs. This returns
1484 // false if something goes wrong.
1486 template<int size, bool big_endian>
1488 Track_relocs<size, big_endian>::initialize(
1490 unsigned int reloc_shndx,
1491 unsigned int reloc_type)
1493 // If RELOC_SHNDX is -1U, it means there is more than one reloc
1494 // section for the .eh_frame section. We can't handle that case.
1495 if (reloc_shndx == -1U)
1498 // If RELOC_SHNDX is 0, there is no reloc section.
1499 if (reloc_shndx == 0)
1502 // Get the contents of the reloc section.
1503 this->prelocs_ = object->section_contents(reloc_shndx, &this->len_, false);
1505 if (reloc_type == elfcpp::SHT_REL)
1506 this->reloc_size_ = elfcpp::Elf_sizes<size>::rel_size;
1507 else if (reloc_type == elfcpp::SHT_RELA)
1508 this->reloc_size_ = elfcpp::Elf_sizes<size>::rela_size;
1512 if (this->len_ % this->reloc_size_ != 0)
1514 object->error(_("reloc section size %zu is not a multiple of "
1516 static_cast<size_t>(this->len_),
1524 // Return the offset of the next reloc, or -1 if there isn't one.
1526 template<int size, bool big_endian>
1528 Track_relocs<size, big_endian>::next_offset() const
1530 if (this->pos_ >= this->len_)
1533 // Rel and Rela start out the same, so we can always use Rel to find
1534 // the r_offset value.
1535 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1536 return rel.get_r_offset();
1539 // Return the index of the symbol referenced by the next reloc, or -1U
1540 // if there aren't any more relocs.
1542 template<int size, bool big_endian>
1544 Track_relocs<size, big_endian>::next_symndx() const
1546 if (this->pos_ >= this->len_)
1548 Sized_target<size, big_endian>* target
1549 = parameters->sized_target<size, big_endian>();
1550 return target->get_r_sym(this->prelocs_ + this->pos_);
1553 // Return the addend of the next reloc, or 0 if there isn't one.
1555 template<int size, bool big_endian>
1557 Track_relocs<size, big_endian>::next_addend() const
1559 if (this->pos_ >= this->len_)
1561 if (this->reloc_size_ == elfcpp::Elf_sizes<size>::rel_size)
1563 elfcpp::Rela<size, big_endian> rela(this->prelocs_ + this->pos_);
1564 return rela.get_r_addend();
1567 // Advance to the next reloc whose r_offset is greater than or equal
1568 // to OFFSET. Return the number of relocs we skip.
1570 template<int size, bool big_endian>
1572 Track_relocs<size, big_endian>::advance(off_t offset)
1575 while (this->pos_ < this->len_)
1577 // Rel and Rela start out the same, so we can always use Rel to
1578 // find the r_offset value.
1579 elfcpp::Rel<size, big_endian> rel(this->prelocs_ + this->pos_);
1580 if (static_cast<off_t>(rel.get_r_offset()) >= offset)
1583 this->pos_ += this->reloc_size_;
1588 // Instantiate the templates we need.
1590 #ifdef HAVE_TARGET_32_LITTLE
1593 Sized_relobj_file<32, false>::do_read_relocs(Read_relocs_data* rd);
1596 #ifdef HAVE_TARGET_32_BIG
1599 Sized_relobj_file<32, true>::do_read_relocs(Read_relocs_data* rd);
1602 #ifdef HAVE_TARGET_64_LITTLE
1605 Sized_relobj_file<64, false>::do_read_relocs(Read_relocs_data* rd);
1608 #ifdef HAVE_TARGET_64_BIG
1611 Sized_relobj_file<64, true>::do_read_relocs(Read_relocs_data* rd);
1614 #ifdef HAVE_TARGET_32_LITTLE
1617 Sized_relobj_file<32, false>::do_gc_process_relocs(Symbol_table* symtab,
1619 Read_relocs_data* rd);
1622 #ifdef HAVE_TARGET_32_BIG
1625 Sized_relobj_file<32, true>::do_gc_process_relocs(Symbol_table* symtab,
1627 Read_relocs_data* rd);
1630 #ifdef HAVE_TARGET_64_LITTLE
1633 Sized_relobj_file<64, false>::do_gc_process_relocs(Symbol_table* symtab,
1635 Read_relocs_data* rd);
1638 #ifdef HAVE_TARGET_64_BIG
1641 Sized_relobj_file<64, true>::do_gc_process_relocs(Symbol_table* symtab,
1643 Read_relocs_data* rd);
1646 #ifdef HAVE_TARGET_32_LITTLE
1649 Sized_relobj_file<32, false>::do_scan_relocs(Symbol_table* symtab,
1651 Read_relocs_data* rd);
1654 #ifdef HAVE_TARGET_32_BIG
1657 Sized_relobj_file<32, true>::do_scan_relocs(Symbol_table* symtab,
1659 Read_relocs_data* rd);
1662 #ifdef HAVE_TARGET_64_LITTLE
1665 Sized_relobj_file<64, false>::do_scan_relocs(Symbol_table* symtab,
1667 Read_relocs_data* rd);
1670 #ifdef HAVE_TARGET_64_BIG
1673 Sized_relobj_file<64, true>::do_scan_relocs(Symbol_table* symtab,
1675 Read_relocs_data* rd);
1678 #ifdef HAVE_TARGET_32_LITTLE
1681 Sized_relobj_file<32, false>::do_relocate(const Symbol_table* symtab,
1682 const Layout* layout,
1686 #ifdef HAVE_TARGET_32_BIG
1689 Sized_relobj_file<32, true>::do_relocate(const Symbol_table* symtab,
1690 const Layout* layout,
1694 #ifdef HAVE_TARGET_64_LITTLE
1697 Sized_relobj_file<64, false>::do_relocate(const Symbol_table* symtab,
1698 const Layout* layout,
1702 #ifdef HAVE_TARGET_64_BIG
1705 Sized_relobj_file<64, true>::do_relocate(const Symbol_table* symtab,
1706 const Layout* layout,
1710 #ifdef HAVE_TARGET_32_LITTLE
1713 Sized_relobj_file<32, false>::do_relocate_sections(
1714 const Symbol_table* symtab,
1715 const Layout* layout,
1716 const unsigned char* pshdrs,
1722 Sized_relobj_file<32, false>::do_get_output_view(
1724 section_size_type* plen) const;
1727 #ifdef HAVE_TARGET_32_BIG
1730 Sized_relobj_file<32, true>::do_relocate_sections(
1731 const Symbol_table* symtab,
1732 const Layout* layout,
1733 const unsigned char* pshdrs,
1739 Sized_relobj_file<32, true>::do_get_output_view(
1741 section_size_type* plen) const;
1744 #ifdef HAVE_TARGET_64_LITTLE
1747 Sized_relobj_file<64, false>::do_relocate_sections(
1748 const Symbol_table* symtab,
1749 const Layout* layout,
1750 const unsigned char* pshdrs,
1756 Sized_relobj_file<64, false>::do_get_output_view(
1758 section_size_type* plen) const;
1761 #ifdef HAVE_TARGET_64_BIG
1764 Sized_relobj_file<64, true>::do_relocate_sections(
1765 const Symbol_table* symtab,
1766 const Layout* layout,
1767 const unsigned char* pshdrs,
1773 Sized_relobj_file<64, true>::do_get_output_view(
1775 section_size_type* plen) const;
1778 #ifdef HAVE_TARGET_32_LITTLE
1781 Sized_relobj_file<32, false>::initialize_input_to_output_maps();
1785 Sized_relobj_file<32, false>::free_input_to_output_maps();
1788 #ifdef HAVE_TARGET_32_BIG
1791 Sized_relobj_file<32, true>::initialize_input_to_output_maps();
1795 Sized_relobj_file<32, true>::free_input_to_output_maps();
1798 #ifdef HAVE_TARGET_64_LITTLE
1801 Sized_relobj_file<64, false>::initialize_input_to_output_maps();
1805 Sized_relobj_file<64, false>::free_input_to_output_maps();
1808 #ifdef HAVE_TARGET_64_BIG
1811 Sized_relobj_file<64, true>::initialize_input_to_output_maps();
1815 Sized_relobj_file<64, true>::free_input_to_output_maps();
1818 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1820 class Merged_symbol_value<32>;
1823 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1825 class Merged_symbol_value<64>;
1828 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1830 class Symbol_value<32>;
1833 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1835 class Symbol_value<64>;
1838 #ifdef HAVE_TARGET_32_LITTLE
1840 class Track_relocs<32, false>;
1843 #ifdef HAVE_TARGET_32_BIG
1845 class Track_relocs<32, true>;
1848 #ifdef HAVE_TARGET_64_LITTLE
1850 class Track_relocs<64, false>;
1853 #ifdef HAVE_TARGET_64_BIG
1855 class Track_relocs<64, true>;
1858 } // End namespace gold.