X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gold%2Freloc.cc;h=ca54f153a3f1ef6f28cab52711bd19bb44893786;hb=6598661d14c90cabac1daa5e683d1e17883b2e41;hp=c94aa9b71690db40bc75f125929d6fe5a8c864e6;hpb=39d0cb0e83f9eb33feb96a18f24607065426d089;p=deliverable%2Fbinutils-gdb.git diff --git a/gold/reloc.cc b/gold/reloc.cc index c94aa9b716..ca54f153a3 100644 --- a/gold/reloc.cc +++ b/gold/reloc.cc @@ -1,6 +1,6 @@ // reloc.cc -- relocate input files for gold. -// Copyright 2006, 2007, 2008 Free Software Foundation, Inc. +// Copyright (C) 2006-2016 Free Software Foundation, Inc. // Written by Ian Lance Taylor . // This file is part of gold. @@ -25,12 +25,16 @@ #include #include "workqueue.h" +#include "layout.h" #include "symtab.h" #include "output.h" #include "merge.h" #include "object.h" #include "target-reloc.h" #include "reloc.h" +#include "icf.h" +#include "compressed_output.h" +#include "incremental.h" namespace gold { @@ -52,7 +56,9 @@ Read_relocs::is_runnable() void Read_relocs::locks(Task_locker* tl) { - tl->add(this, this->object_->token()); + Task_token* token = this->object_->token(); + if (token != NULL) + tl->add(this, token); } // Read the relocations and then start a Scan_relocs_task. @@ -60,13 +66,30 @@ Read_relocs::locks(Task_locker* tl) void Read_relocs::run(Workqueue* workqueue) { - Read_relocs_data *rd = new Read_relocs_data; + Read_relocs_data* rd = new Read_relocs_data; this->object_->read_relocs(rd); + this->object_->set_relocs_data(rd); this->object_->release(); - workqueue->queue_next(new Scan_relocs(this->options_, this->symtab_, - this->layout_, this->object_, rd, - this->symtab_lock_, this->blocker_)); + // If garbage collection or identical comdat folding is desired, we + // process the relocs first before scanning them. Scanning of relocs is + // done only after garbage or identical sections is identified. + if (parameters->options().gc_sections() + || parameters->options().icf_enabled()) + { + workqueue->queue_next(new Gc_process_relocs(this->symtab_, + this->layout_, + this->object_, rd, + this->this_blocker_, + this->next_blocker_)); + } + else + { + workqueue->queue_next(new Scan_relocs(this->symtab_, this->layout_, + this->object_, rd, + this->this_blocker_, + this->next_blocker_)); + } } // Return a debugging name for the task. @@ -77,8 +100,59 @@ Read_relocs::get_name() const return "Read_relocs " + this->object_->name(); } +// Gc_process_relocs methods. + +Gc_process_relocs::~Gc_process_relocs() +{ + if (this->this_blocker_ != NULL) + delete this->this_blocker_; +} + +// These tasks process the relocations read by Read_relocs and +// determine which sections are referenced and which are garbage. +// This task is done only when --gc-sections is used. This is blocked +// by THIS_BLOCKER_. It unblocks NEXT_BLOCKER_. + +Task_token* +Gc_process_relocs::is_runnable() +{ + if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) + return this->this_blocker_; + if (this->object_->is_locked()) + return this->object_->token(); + return NULL; +} + +void +Gc_process_relocs::locks(Task_locker* tl) +{ + tl->add(this, this->object_->token()); + tl->add(this, this->next_blocker_); +} + +void +Gc_process_relocs::run(Workqueue*) +{ + this->object_->gc_process_relocs(this->symtab_, this->layout_, this->rd_); + this->object_->release(); +} + +// Return a debugging name for the task. + +std::string +Gc_process_relocs::get_name() const +{ + return "Gc_process_relocs " + this->object_->name(); +} + // Scan_relocs methods. +Scan_relocs::~Scan_relocs() +{ + if (this->this_blocker_ != NULL) + delete this->this_blocker_; +} + // These tasks scan the relocations read by Read_relocs and mark up // the symbol table to indicate which relocations are required. We // use a lock on the symbol table to keep them from interfering with @@ -87,8 +161,8 @@ Read_relocs::get_name() const Task_token* Scan_relocs::is_runnable() { - if (!this->symtab_lock_->is_writable()) - return this->symtab_lock_; + if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) + return this->this_blocker_; if (this->object_->is_locked()) return this->object_->token(); return NULL; @@ -100,9 +174,10 @@ Scan_relocs::is_runnable() void Scan_relocs::locks(Task_locker* tl) { - tl->add(this, this->object_->token()); - tl->add(this, this->symtab_lock_); - tl->add(this, this->blocker_); + Task_token* token = this->object_->token(); + if (token != NULL) + tl->add(this, token); + tl->add(this, this->next_blocker_); } // Scan the relocs. @@ -110,11 +185,10 @@ Scan_relocs::locks(Task_locker* tl) void Scan_relocs::run(Workqueue*) { - this->object_->scan_relocs(this->options_, this->symtab_, this->layout_, - this->rd_); - this->object_->release(); + this->object_->scan_relocs(this->symtab_, this->layout_, this->rd_); delete this->rd_; this->rd_ = NULL; + this->object_->release(); } // Return a debugging name for the task. @@ -152,7 +226,9 @@ Relocate_task::locks(Task_locker* tl) if (this->input_sections_blocker_ != NULL) tl->add(this, this->input_sections_blocker_); tl->add(this, this->final_blocker_); - tl->add(this, this->object_->token()); + Task_token* token = this->object_->token(); + if (token != NULL) + tl->add(this, token); } // Run the task. @@ -160,8 +236,7 @@ Relocate_task::locks(Task_locker* tl) void Relocate_task::run(Workqueue*) { - this->object_->relocate(this->options_, this->symtab_, this->layout_, - this->of_); + this->object_->relocate(this->symtab_, this->layout_, this->of_); // This is normally the last thing we will do with an object, so // uncache all views. @@ -183,7 +258,7 @@ Relocate_task::get_name() const template void -Sized_relobj::do_read_relocs(Read_relocs_data* rd) +Sized_relobj_file::do_read_relocs(Read_relocs_data* rd) { rd->relocs.clear(); @@ -193,13 +268,14 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) rd->relocs.reserve(shnum / 2); - std::vector& map_sections(this->map_to_output()); + const Output_sections& out_sections(this->output_sections()); + const std::vector
& out_offsets(this->section_offsets()); - const unsigned char *pshdrs = this->get_view(this->elf_file_.shoff(), + const unsigned char* pshdrs = this->get_view(this->elf_file_.shoff(), shnum * This::shdr_size, true, true); // Skip the first, dummy, section. - const unsigned char *ps = pshdrs + This::shdr_size; + const unsigned char* ps = pshdrs + This::shdr_size; for (unsigned int i = 1; i < shnum; ++i, ps += This::shdr_size) { typename This::Shdr shdr(ps); @@ -208,7 +284,7 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) continue; - unsigned int shndx = shdr.get_sh_info(); + unsigned int shndx = this->adjust_shndx(shdr.get_sh_info()); if (shndx >= shnum) { this->error(_("relocation section %u has bad info %u"), @@ -216,7 +292,7 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) continue; } - Output_section* os = map_sections[shndx].output_section; + Output_section* os = out_sections[shndx]; if (os == NULL) continue; @@ -224,25 +300,31 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) // PLT sections. Relocations for sections which are not // allocated (typically debugging sections) should not add new // GOT and PLT entries. So we skip them unless this is a - // relocatable link or we need to emit relocations. + // relocatable link or we need to emit relocations. FIXME: What + // should we do if a linker script maps a section with SHF_ALLOC + // clear to a section with SHF_ALLOC set? typename This::Shdr secshdr(pshdrs + shndx * This::shdr_size); bool is_section_allocated = ((secshdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0); if (!is_section_allocated && !parameters->options().relocatable() - && !parameters->options().emit_relocs()) + && !parameters->options().emit_relocs() + && !parameters->incremental()) continue; - if (shdr.get_sh_link() != this->symtab_shndx_) + if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_) { this->error(_("relocation section %u uses unexpected " "symbol table %u"), - i, shdr.get_sh_link()); + i, this->adjust_shndx(shdr.get_sh_link())); continue; } off_t sh_size = shdr.get_sh_size(); + if (sh_size == 0) + continue; + unsigned int reloc_size; if (sh_type == elfcpp::SHT_REL) reloc_size = elfcpp::Elf_sizes::rel_size; @@ -273,7 +355,7 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) sr.sh_type = sh_type; sr.reloc_count = reloc_count; sr.output_section = os; - sr.needs_special_offset_handling = map_sections[shndx].offset == -1; + sr.needs_special_offset_handling = out_offsets[shndx] == invalid_address; sr.is_data_section_allocated = is_section_allocated; } @@ -295,17 +377,58 @@ Sized_relobj::do_read_relocs(Read_relocs_data* rd) } } +// Process the relocs to generate mappings from source sections to referenced +// sections. This is used during garbage collection to determine garbage +// sections. + +template +void +Sized_relobj_file::do_gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd) +{ + Sized_target* target = + parameters->sized_target(); + + const unsigned char* local_symbols; + if (rd->local_symbols == NULL) + local_symbols = NULL; + else + local_symbols = rd->local_symbols->data(); + + for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); + p != rd->relocs.end(); + ++p) + { + if (!parameters->options().relocatable()) + { + // As noted above, when not generating an object file, we + // only scan allocated sections. We may see a non-allocated + // section here if we are emitting relocs. + if (p->is_data_section_allocated) + target->gc_process_relocs(symtab, layout, this, + p->data_shndx, p->sh_type, + p->contents->data(), p->reloc_count, + p->output_section, + p->needs_special_offset_handling, + this->local_symbol_count_, + local_symbols); + } + } +} + + // Scan the relocs and adjust the symbol table. This looks for // relocations which require GOT/PLT/COPY relocations. template void -Sized_relobj::do_scan_relocs(const General_options& options, - Symbol_table* symtab, - Layout* layout, - Read_relocs_data* rd) +Sized_relobj_file::do_scan_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd) { - Sized_target* target = this->sized_target(); + Sized_target* target = + parameters->sized_target(); const unsigned char* local_symbols; if (rd->local_symbols == NULL) @@ -313,31 +436,46 @@ Sized_relobj::do_scan_relocs(const General_options& options, else local_symbols = rd->local_symbols->data(); + // For incremental links, allocate the counters for incremental relocations. + if (layout->incremental_inputs() != NULL) + this->allocate_incremental_reloc_counts(); + for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); p != rd->relocs.end(); ++p) { + // When garbage collection is on, unreferenced sections are not included + // in the link that would have been included normally. This is known only + // after Read_relocs hence this check has to be done again. + if (parameters->options().gc_sections() + || parameters->options().icf_enabled()) + { + if (p->output_section == NULL) + continue; + } if (!parameters->options().relocatable()) { // As noted above, when not generating an object file, we // only scan allocated sections. We may see a non-allocated // section here if we are emitting relocs. if (p->is_data_section_allocated) - target->scan_relocs(options, symtab, layout, this, p->data_shndx, + target->scan_relocs(symtab, layout, this, p->data_shndx, p->sh_type, p->contents->data(), p->reloc_count, p->output_section, p->needs_special_offset_handling, this->local_symbol_count_, local_symbols); if (parameters->options().emit_relocs()) - this->emit_relocs_scan(options, symtab, layout, local_symbols, p); + this->emit_relocs_scan(symtab, layout, local_symbols, p); + if (layout->incremental_inputs() != NULL) + this->incremental_relocs_scan(p); } else { Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx); gold_assert(rr != NULL); rr->set_reloc_count(p->reloc_count); - target->scan_relocatable_relocs(options, symtab, layout, this, + target->scan_relocatable_relocs(symtab, layout, this, p->data_shndx, p->sh_type, p->contents->data(), p->reloc_count, @@ -352,6 +490,10 @@ Sized_relobj::do_scan_relocs(const General_options& options, p->contents = NULL; } + // For incremental links, finalize the allocation of relocations. + if (layout->incremental_inputs() != NULL) + this->finalize_incremental_relocs(layout, true); + if (rd->local_symbols != NULL) { delete rd->local_symbols; @@ -359,106 +501,92 @@ Sized_relobj::do_scan_relocs(const General_options& options, } } -// This is a strategy class we use when scanning for --emit-relocs. - -template -class Emit_relocs_strategy -{ - public: - // A local non-section symbol. - inline Relocatable_relocs::Reloc_strategy - local_non_section_strategy(unsigned int, Relobj*) - { return Relocatable_relocs::RELOC_COPY; } - - // A local section symbol. - inline Relocatable_relocs::Reloc_strategy - local_section_strategy(unsigned int, Relobj*) - { - if (sh_type == elfcpp::SHT_RELA) - return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; - else - { - // The addend is stored in the section contents. Since this - // is not a relocatable link, we are going to apply the - // relocation contents to the section as usual. This means - // that we have no way to record the original addend. If the - // original addend is not zero, there is basically no way for - // the user to handle this correctly. Caveat emptor. - return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0; - } - } - - // A global symbol. - inline Relocatable_relocs::Reloc_strategy - global_strategy(unsigned int, Relobj*, unsigned int) - { return Relocatable_relocs::RELOC_COPY; } -}; - // Scan the input relocations for --emit-relocs. template void -Sized_relobj::emit_relocs_scan( - const General_options& options, +Sized_relobj_file::emit_relocs_scan( Symbol_table* symtab, Layout* layout, const unsigned char* plocal_syms, const Read_relocs_data::Relocs_list::iterator& p) { + Sized_target* target = + parameters->sized_target(); + Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx); gold_assert(rr != NULL); rr->set_reloc_count(p->reloc_count); + target->emit_relocs_scan( + symtab, + layout, + this, + p->data_shndx, + p->sh_type, + p->contents->data(), + p->reloc_count, + p->output_section, + p->needs_special_offset_handling, + this->local_symbol_count_, + plocal_syms, + rr); +} + +// Scan the input relocations for --incremental. +template +void +Sized_relobj_file::incremental_relocs_scan( + const Read_relocs_data::Relocs_list::iterator& p) +{ if (p->sh_type == elfcpp::SHT_REL) - this->emit_relocs_scan_reltype(options, symtab, layout, - plocal_syms, p, rr); + this->incremental_relocs_scan_reltype(p); else { gold_assert(p->sh_type == elfcpp::SHT_RELA); - this->emit_relocs_scan_reltype(options, symtab, - layout, plocal_syms, p, - rr); + this->incremental_relocs_scan_reltype(p); } } -// Scan the input relocation for --emit-relocs, templatized on the +// Scan the input relocation for --incremental, templatized on the // type of the relocation section. template template void -Sized_relobj::emit_relocs_scan_reltype( - const General_options& options, - Symbol_table* symtab, - Layout* layout, - const unsigned char* plocal_syms, - const Read_relocs_data::Relocs_list::iterator& p, - Relocatable_relocs* rr) +Sized_relobj_file::incremental_relocs_scan_reltype( + const Read_relocs_data::Relocs_list::iterator& p) { - scan_relocatable_relocs >( - options, - symtab, - layout, - this, - p->data_shndx, - p->contents->data(), - p->reloc_count, - p->output_section, - p->needs_special_offset_handling, - this->local_symbol_count_, - plocal_syms, - rr); + typedef typename Reloc_types::Reloc Reltype; + const int reloc_size = Reloc_types::reloc_size; + const unsigned char* prelocs = p->contents->data(); + size_t reloc_count = p->reloc_count; + + for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) + { + Reltype reloc(prelocs); + + if (p->needs_special_offset_handling + && !p->output_section->is_input_address_mapped(this, p->data_shndx, + reloc.get_r_offset())) + continue; + + // FIXME: Some targets have a non-standard r_info field. + typename elfcpp::Elf_types::Elf_WXword r_info = reloc.get_r_info(); + const unsigned int r_sym = elfcpp::elf_r_sym(r_info); + + if (r_sym >= this->local_symbol_count_) + this->count_incremental_reloc(r_sym - this->local_symbol_count_); + } } // Relocate the input sections and write out the local symbols. template void -Sized_relobj::do_relocate(const General_options& options, - const Symbol_table* symtab, - const Layout* layout, - Output_file* of) +Sized_relobj_file::do_relocate(const Symbol_table* symtab, + const Layout* layout, + Output_file* of) { unsigned int shnum = this->shnum(); @@ -474,15 +602,33 @@ Sized_relobj::do_relocate(const General_options& options, // section data to the output file. The second one applies // relocations. - this->write_sections(pshdrs, of, &views); + this->write_sections(layout, pshdrs, of, &views); // To speed up relocations, we set up hash tables for fast lookup of // input offsets to output addresses. this->initialize_input_to_output_maps(); + // Make the views available through get_output_view() for the duration + // of this routine. This RAII class will reset output_views_ to NULL + // when the views go out of scope. + struct Set_output_views + { + Set_output_views(const Views** ppviews, const Views* pviews) + { + ppviews_ = ppviews; + *ppviews = pviews; + } + + ~Set_output_views() + { *ppviews_ = NULL; } + + const Views** ppviews_; + }; + Set_output_views set_output_views(&this->output_views_, &views); + // Apply relocations. - this->relocate_sections(options, symtab, layout, pshdrs, &views); + this->relocate_sections(symtab, layout, pshdrs, of, &views); // After we've done the relocations, we release the hash tables, // since we no longer need them. @@ -493,6 +639,8 @@ Sized_relobj::do_relocate(const General_options& options, { if (views[i].view != NULL) { + if (views[i].is_ctors_reverse_view) + this->reverse_words(views[i].view, views[i].view_size); if (!views[i].is_postprocessing_view) { if (views[i].is_input_output_view) @@ -507,10 +655,9 @@ Sized_relobj::do_relocate(const General_options& options, } // Write out the local symbols. - this->write_local_symbols(of, layout->sympool(), layout->dynpool()); - - // We should no longer need the local symbol values. - this->clear_local_symbols(); + this->write_local_symbols(of, layout->sympool(), layout->dynpool(), + layout->symtab_xindex(), layout->dynsym_xindex(), + layout->symtab_section_offset()); } // Sort a Read_multiple vector by file offset. @@ -528,12 +675,14 @@ struct Read_multiple_compare template void -Sized_relobj::write_sections(const unsigned char* pshdrs, - Output_file* of, - Views* pviews) +Sized_relobj_file::write_sections(const Layout* layout, + const unsigned char* pshdrs, + Output_file* of, + Views* pviews) { unsigned int shnum = this->shnum(); - const std::vector& map_sections(this->map_to_output()); + const Output_sections& out_sections(this->output_sections()); + const std::vector
& out_offsets(this->section_offsets()); File_read::Read_multiple rm; bool is_sorted = true; @@ -545,10 +694,10 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, pvs->view = NULL; - const Output_section* os = map_sections[i].output_section; + const Output_section* os = out_sections[i]; if (os == NULL) continue; - off_t output_offset = map_sections[i].offset; + Address output_offset = out_offsets[i]; typename This::Shdr shdr(p); @@ -576,6 +725,7 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, pvs->address = posd->address(); pvs->is_input_output_view = false; pvs->is_postprocessing_view = false; + pvs->is_ctors_reverse_view = false; continue; } @@ -583,8 +733,8 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, // In the normal case, this input section is simply mapped to // the output section at offset OUTPUT_OFFSET. - // However, if OUTPUT_OFFSET == -1, then input data is handled - // specially--e.g., a .eh_frame section. The relocation + // However, if OUTPUT_OFFSET == INVALID_ADDRESS, then input data is + // handled specially--e.g., a .eh_frame section. The relocation // routines need to check for each reloc where it should be // applied. For this case, we need an input/output view for the // entire contents of the section in the output file. We don't @@ -601,24 +751,32 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, // final data to the output file. off_t output_section_offset; - off_t output_section_size; + Address output_section_size; if (!os->requires_postprocessing()) { output_section_offset = os->offset(); - output_section_size = os->data_size(); + output_section_size = convert_types(os->data_size()); } else { output_section_offset = 0; - output_section_size = os->postprocessing_buffer_size(); + output_section_size = + convert_types(os->postprocessing_buffer_size()); } off_t view_start; section_size_type view_size; - if (output_offset != -1) + bool must_decompress = false; + if (output_offset != invalid_address) { view_start = output_section_offset + output_offset; view_size = convert_to_section_size_type(shdr.get_sh_size()); + section_size_type uncompressed_size; + if (this->section_is_compressed(i, &uncompressed_size)) + { + view_size = uncompressed_size; + must_decompress = true; + } } else { @@ -629,17 +787,15 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, if (view_size == 0) continue; - gold_assert(output_offset == -1 - || (output_offset >= 0 - && (output_offset + static_cast(view_size) - <= output_section_size))); + gold_assert(output_offset == invalid_address + || output_offset + view_size <= output_section_size); unsigned char* view; if (os->requires_postprocessing()) { unsigned char* buffer = os->postprocessing_buffer(); view = buffer + view_start; - if (output_offset != -1) + if (output_offset != invalid_address && !must_decompress) { off_t sh_offset = shdr.get_sh_offset(); if (!rm.empty() && rm.back().file_offset > sh_offset) @@ -650,27 +806,48 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, } else { - if (output_offset == -1) + if (output_offset == invalid_address) view = of->get_input_output_view(view_start, view_size); else { view = of->get_output_view(view_start, view_size); - off_t sh_offset = shdr.get_sh_offset(); - if (!rm.empty() && rm.back().file_offset > sh_offset) - is_sorted = false; - rm.push_back(File_read::Read_multiple_entry(sh_offset, - view_size, view)); + if (!must_decompress) + { + off_t sh_offset = shdr.get_sh_offset(); + if (!rm.empty() && rm.back().file_offset > sh_offset) + is_sorted = false; + rm.push_back(File_read::Read_multiple_entry(sh_offset, + view_size, view)); + } } } + if (must_decompress) + { + // Read and decompress the section. + section_size_type len; + const unsigned char* p = this->section_contents(i, &len, false); + if (!decompress_input_section(p, len, view, view_size, + size, big_endian, + shdr.get_sh_flags())) + this->error(_("could not decompress section %s"), + this->section_name(i).c_str()); + } + pvs->view = view; pvs->address = os->address(); - if (output_offset != -1) + if (output_offset != invalid_address) pvs->address += output_offset; pvs->offset = view_start; pvs->view_size = view_size; - pvs->is_input_output_view = output_offset == -1; + pvs->is_input_output_view = output_offset == invalid_address; pvs->is_postprocessing_view = os->requires_postprocessing(); + pvs->is_ctors_reverse_view = + (!parameters->options().relocatable() + && view_size > size / 8 + && (strcmp(os->name(), ".init_array") == 0 + || strcmp(os->name(), ".fini_array") == 0) + && layout->is_ctors_in_init_array(this, i)); } // Actually read the data. @@ -687,20 +864,21 @@ Sized_relobj::write_sections(const unsigned char* pshdrs, template void -Sized_relobj::relocate_sections( - const General_options& options, +Sized_relobj_file::do_relocate_sections( const Symbol_table* symtab, const Layout* layout, const unsigned char* pshdrs, + Output_file* of, Views* pviews) { unsigned int shnum = this->shnum(); - Sized_target* target = this->sized_target(); + Sized_target* target = + parameters->sized_target(); - const std::vector& map_sections(this->map_to_output()); + const Output_sections& out_sections(this->output_sections()); + const std::vector
& out_offsets(this->section_offsets()); Relocate_info relinfo; - relinfo.options = &options; relinfo.symtab = symtab; relinfo.layout = layout; relinfo.object = this; @@ -714,7 +892,11 @@ Sized_relobj::relocate_sections( if (sh_type != elfcpp::SHT_REL && sh_type != elfcpp::SHT_RELA) continue; - unsigned int index = shdr.get_sh_info(); + off_t sh_size = shdr.get_sh_size(); + if (sh_size == 0) + continue; + + unsigned int index = this->adjust_shndx(shdr.get_sh_info()); if (index >= this->shnum()) { this->error(_("relocation section %u has bad info %u"), @@ -722,28 +904,27 @@ Sized_relobj::relocate_sections( continue; } - Output_section* os = map_sections[index].output_section; + Output_section* os = out_sections[index]; if (os == NULL) { // This relocation section is against a section which we // discarded. continue; } - off_t output_offset = map_sections[index].offset; + Address output_offset = out_offsets[index]; gold_assert((*pviews)[index].view != NULL); if (parameters->options().relocatable()) gold_assert((*pviews)[i].view != NULL); - if (shdr.get_sh_link() != this->symtab_shndx_) + if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx_) { gold_error(_("relocation section %u uses unexpected " "symbol table %u"), - i, shdr.get_sh_link()); + i, this->adjust_shndx(shdr.get_sh_link())); continue; } - off_t sh_size = shdr.get_sh_size(); const unsigned char* prelocs = this->get_view(shdr.get_sh_offset(), sh_size, true, false); @@ -769,117 +950,192 @@ Sized_relobj::relocate_sections( continue; } - gold_assert(output_offset != -1 + gold_assert(output_offset != invalid_address || this->relocs_must_follow_section_writes()); relinfo.reloc_shndx = i; + relinfo.reloc_shdr = p; relinfo.data_shndx = index; + relinfo.data_shdr = pshdrs + index * This::shdr_size; + unsigned char* view = (*pviews)[index].view; + Address address = (*pviews)[index].address; + section_size_type view_size = (*pviews)[index].view_size; + + Reloc_symbol_changes* reloc_map = NULL; + if (this->uses_split_stack() && output_offset != invalid_address) + { + typename This::Shdr data_shdr(pshdrs + index * This::shdr_size); + if ((data_shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) + this->split_stack_adjust(symtab, pshdrs, sh_type, index, + prelocs, reloc_count, view, view_size, + &reloc_map, target); + } + + Relocatable_relocs* rr = NULL; + if (parameters->options().emit_relocs() + || parameters->options().relocatable()) + rr = this->relocatable_relocs(i); + relinfo.rr = rr; + if (!parameters->options().relocatable()) { - target->relocate_section(&relinfo, - sh_type, - prelocs, - reloc_count, - os, - output_offset == -1, - (*pviews)[index].view, - (*pviews)[index].address, - (*pviews)[index].view_size); + target->relocate_section(&relinfo, sh_type, prelocs, reloc_count, os, + output_offset == invalid_address, + view, address, view_size, reloc_map); if (parameters->options().emit_relocs()) - this->emit_relocs(&relinfo, i, sh_type, prelocs, reloc_count, - os, output_offset, - (*pviews)[index].view, - (*pviews)[index].address, - (*pviews)[index].view_size, - (*pviews)[i].view, - (*pviews)[i].view_size); + target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count, + os, output_offset, + view, address, view_size, + (*pviews)[i].view, + (*pviews)[i].view_size); + if (parameters->incremental()) + this->incremental_relocs_write(&relinfo, sh_type, prelocs, + reloc_count, os, output_offset, of); } else - { - Relocatable_relocs* rr = this->relocatable_relocs(i); - target->relocate_for_relocatable(&relinfo, - sh_type, - prelocs, - reloc_count, - os, - output_offset, - rr, - (*pviews)[index].view, - (*pviews)[index].address, - (*pviews)[index].view_size, - (*pviews)[i].view, - (*pviews)[i].view_size); - } + target->relocate_relocs(&relinfo, sh_type, prelocs, reloc_count, + os, output_offset, + view, address, view_size, + (*pviews)[i].view, + (*pviews)[i].view_size); } } -// Emit the relocs for --emit-relocs. +// Return the output view for section SHNDX. + +template +unsigned char* +Sized_relobj_file::do_get_output_view( + unsigned int shndx, + section_size_type* plen) const +{ + gold_assert(this->output_views_ != NULL); + gold_assert(shndx < this->output_views_->size()); + const View_size& v = (*this->output_views_)[shndx]; + *plen = v.view_size; + return v.view; +} + +// Write the incremental relocs. template void -Sized_relobj::emit_relocs( +Sized_relobj_file::incremental_relocs_write( const Relocate_info* relinfo, - unsigned int i, unsigned int sh_type, const unsigned char* prelocs, size_t reloc_count, Output_section* output_section, - off_t offset_in_output_section, - unsigned char* view, - typename elfcpp::Elf_types::Elf_Addr address, - section_size_type view_size, - unsigned char* reloc_view, - section_size_type reloc_view_size) + Address output_offset, + Output_file* of) { if (sh_type == elfcpp::SHT_REL) - this->emit_relocs_reltype(relinfo, i, prelocs, - reloc_count, output_section, - offset_in_output_section, - view, address, view_size, - reloc_view, reloc_view_size); + this->incremental_relocs_write_reltype( + relinfo, + prelocs, + reloc_count, + output_section, + output_offset, + of); else { gold_assert(sh_type == elfcpp::SHT_RELA); - this->emit_relocs_reltype(relinfo, i, prelocs, - reloc_count, output_section, - offset_in_output_section, - view, address, view_size, - reloc_view, reloc_view_size); + this->incremental_relocs_write_reltype( + relinfo, + prelocs, + reloc_count, + output_section, + output_offset, + of); } } -// Emit the relocs for --emit-relocs, templatized on the type of the +// Write the incremental relocs, templatized on the type of the // relocation section. template template void -Sized_relobj::emit_relocs_reltype( +Sized_relobj_file::incremental_relocs_write_reltype( const Relocate_info* relinfo, - unsigned int i, const unsigned char* prelocs, size_t reloc_count, Output_section* output_section, - off_t offset_in_output_section, - unsigned char* view, - typename elfcpp::Elf_types::Elf_Addr address, - section_size_type view_size, - unsigned char* reloc_view, - section_size_type reloc_view_size) + Address output_offset, + Output_file* of) { - const Relocatable_relocs* rr = this->relocatable_relocs(i); - relocate_for_relocatable( - relinfo, - prelocs, - reloc_count, - output_section, - offset_in_output_section, - rr, - view, - address, - view_size, - reloc_view, - reloc_view_size); + typedef typename Reloc_types::Reloc Reloc; + const unsigned int reloc_size = + Reloc_types::reloc_size; + const unsigned int sizeof_addr = size / 8; + const unsigned int incr_reloc_size = + Incremental_relocs_reader::reloc_size; + + unsigned int out_shndx = output_section->out_shndx(); + + // Get a view for the .gnu_incremental_relocs section. + + Incremental_inputs* inputs = relinfo->layout->incremental_inputs(); + gold_assert(inputs != NULL); + const off_t relocs_off = inputs->relocs_section()->offset(); + const off_t relocs_size = inputs->relocs_section()->data_size(); + unsigned char* const view = of->get_output_view(relocs_off, relocs_size); + + for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) + { + Reloc reloc(prelocs); + + // FIXME: Some targets have a non-standard r_info field. + typename elfcpp::Elf_types::Elf_WXword r_info = reloc.get_r_info(); + const unsigned int r_sym = elfcpp::elf_r_sym(r_info); + const unsigned int r_type = elfcpp::elf_r_type(r_info); + + if (r_sym < this->local_symbol_count_) + continue; + + // Get the new offset--the location in the output section where + // this relocation should be applied. + + Address offset = reloc.get_r_offset(); + if (output_offset != invalid_address) + offset += output_offset; + else + { + section_offset_type sot_offset = + convert_types(offset); + section_offset_type new_sot_offset = + output_section->output_offset(relinfo->object, + relinfo->data_shndx, + sot_offset); + gold_assert(new_sot_offset != -1); + offset += new_sot_offset; + } + + // Get the addend. + typename elfcpp::Elf_types::Elf_Swxword addend; + if (sh_type == elfcpp::SHT_RELA) + addend = + Reloc_types::get_reloc_addend(&reloc); + else + { + // FIXME: Get the addend for SHT_REL. + addend = 0; + } + + // Get the index of the output relocation. + + unsigned int reloc_index = + this->next_incremental_reloc_index(r_sym - this->local_symbol_count_); + + // Write the relocation. + + unsigned char* pov = view + reloc_index * incr_reloc_size; + elfcpp::Swap<32, big_endian>::writeval(pov, r_type); + elfcpp::Swap<32, big_endian>::writeval(pov + 4, out_shndx); + elfcpp::Swap::writeval(pov + 8, offset); + elfcpp::Swap::writeval(pov + 8 + sizeof_addr, addend); + of->write_output_view(pov - view, incr_reloc_size, view); + } } // Create merge hash tables for the local symbols. These are used to @@ -887,7 +1143,7 @@ Sized_relobj::emit_relocs_reltype( template void -Sized_relobj::initialize_input_to_output_maps() +Sized_relobj_file::initialize_input_to_output_maps() { const unsigned int loccount = this->local_symbol_count_; for (unsigned int i = 1; i < loccount; ++i) @@ -901,7 +1157,7 @@ Sized_relobj::initialize_input_to_output_maps() template void -Sized_relobj::free_input_to_output_maps() +Sized_relobj_file::free_input_to_output_maps() { const unsigned int loccount = this->local_symbol_count_; for (unsigned int i = 1; i < loccount; ++i) @@ -911,183 +1167,314 @@ Sized_relobj::free_input_to_output_maps() } } -// Class Merged_symbol_value. +// If an object was compiled with -fsplit-stack, this is called to +// check whether any relocations refer to functions defined in objects +// which were not compiled with -fsplit-stack. If they were, then we +// need to apply some target-specific adjustments to request +// additional stack space. -template +template void -Merged_symbol_value::initialize_input_to_output_map( - const Relobj* object, - unsigned int input_shndx) +Sized_relobj_file::split_stack_adjust( + const Symbol_table* symtab, + const unsigned char* pshdrs, + unsigned int sh_type, + unsigned int shndx, + const unsigned char* prelocs, + size_t reloc_count, + unsigned char* view, + section_size_type view_size, + Reloc_symbol_changes** reloc_map, + const Sized_target* target) { - Object_merge_map* map = object->merge_map(); - map->initialize_input_to_output_map(input_shndx, - this->output_start_address_, - &this->output_addresses_); + if (sh_type == elfcpp::SHT_REL) + this->split_stack_adjust_reltype(symtab, pshdrs, shndx, + prelocs, reloc_count, + view, view_size, + reloc_map, target); + else + { + gold_assert(sh_type == elfcpp::SHT_RELA); + this->split_stack_adjust_reltype(symtab, pshdrs, shndx, + prelocs, reloc_count, + view, view_size, + reloc_map, target); + } } -// Get the output value corresponding to an input offset if we -// couldn't find it in the hash table. +// Adjust for -fsplit-stack, templatized on the type of the relocation +// section. -template -typename elfcpp::Elf_types::Elf_Addr -Merged_symbol_value::value_from_output_section( - const Relobj* object, - unsigned int input_shndx, - typename elfcpp::Elf_types::Elf_Addr input_offset) const +template +template +void +Sized_relobj_file::split_stack_adjust_reltype( + const Symbol_table* symtab, + const unsigned char* pshdrs, + unsigned int shndx, + const unsigned char* prelocs, + size_t reloc_count, + unsigned char* view, + section_size_type view_size, + Reloc_symbol_changes** reloc_map, + const Sized_target* target) { - section_offset_type output_offset; - bool found = object->merge_map()->get_output_offset(NULL, input_shndx, - input_offset, - &output_offset); + typedef typename Reloc_types::Reloc Reltype; + const int reloc_size = Reloc_types::reloc_size; - // If this assertion fails, it means that some relocation was - // against a portion of an input merge section which we didn't map - // to the output file and we didn't explicitly discard. We should - // always map all portions of input merge sections. - gold_assert(found); + size_t local_count = this->local_symbol_count(); - if (output_offset == -1) - return 0; - else - return this->output_start_address_ + output_offset; -} + std::vector non_split_refs; -// Copy_relocs::Copy_reloc_entry methods. + const unsigned char* pr = prelocs; + for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size) + { + // Some supported targets have a non-standard r_info field. + // If this call is too slow, we can move this routine to + // target-reloc.h and templatize it on Classify_reloc. + unsigned int r_sym = target->get_r_sym(pr); + if (r_sym < local_count) + continue; -// Return whether we should emit this reloc. We should emit it if the -// symbol is still defined in a dynamic object. If we should not emit -// it, we clear it, to save ourselves the test next time. + const Symbol* gsym = this->global_symbol(r_sym); + gold_assert(gsym != NULL); + if (gsym->is_forwarder()) + gsym = symtab->resolve_forwards(gsym); + + // See if this relocation refers to a function defined in an + // object compiled without -fsplit-stack. Note that we don't + // care about the type of relocation--this means that in some + // cases we will ask for a large stack unnecessarily, but this + // is not fatal. FIXME: Some targets have symbols which are + // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC. + if (!gsym->is_undefined() + && gsym->source() == Symbol::FROM_OBJECT + && !gsym->object()->uses_split_stack()) + { + if (parameters->target().is_call_to_non_split(gsym, pr, view, + view_size)) + { + Reltype reloc(pr); + section_offset_type offset = + convert_to_section_size_type(reloc.get_r_offset()); + non_split_refs.push_back(offset); + } + } + } -template -bool -Copy_relocs::Copy_reloc_entry::should_emit() -{ - if (this->sym_ == NULL) - return false; - if (this->sym_->is_from_dynobj()) - return true; - this->sym_ = NULL; - return false; -} + if (non_split_refs.empty()) + return; -// Emit a reloc into a SHT_REL section. + // At this point, every entry in NON_SPLIT_REFS indicates a + // relocation which refers to a function in an object compiled + // without -fsplit-stack. We now have to convert that list into a + // set of offsets to functions. First, we find all the functions. -template -void -Copy_relocs::Copy_reloc_entry::emit( - Output_data_reloc* reloc_data) -{ - this->sym_->set_needs_dynsym_entry(); - reloc_data->add_global(this->sym_, this->reloc_type_, this->output_section_, - this->relobj_, this->shndx_, this->address_); + Function_offsets function_offsets; + this->find_functions(pshdrs, shndx, &function_offsets); + if (function_offsets.empty()) + return; + + // Now get a list of the function with references to non split-stack + // code. + + Function_offsets calls_non_split; + for (std::vector::const_iterator p + = non_split_refs.begin(); + p != non_split_refs.end(); + ++p) + { + Function_offsets::const_iterator low = function_offsets.lower_bound(*p); + if (low == function_offsets.end()) + --low; + else if (low->first == *p) + ; + else if (low == function_offsets.begin()) + continue; + else + --low; + + calls_non_split.insert(*low); + } + if (calls_non_split.empty()) + return; + + // Now we have a set of functions to adjust. The adjustments are + // target specific. Besides changing the output section view + // however, it likes, the target may request a relocation change + // from one global symbol name to another. + + for (Function_offsets::const_iterator p = calls_non_split.begin(); + p != calls_non_split.end(); + ++p) + { + std::string from; + std::string to; + parameters->target().calls_non_split(this, shndx, p->first, p->second, + prelocs, reloc_count, + view, view_size, &from, &to); + if (!from.empty()) + { + gold_assert(!to.empty()); + Symbol* tosym = NULL; + + // Find relocations in the relevant function which are for + // FROM. + pr = prelocs; + for (size_t i = 0; i < reloc_count; ++i, pr += reloc_size) + { + Reltype reloc(pr); + + unsigned int r_sym = target->get_r_sym(pr); + if (r_sym < local_count) + continue; + + section_offset_type offset = + convert_to_section_size_type(reloc.get_r_offset()); + if (offset < p->first + || (offset + >= (p->first + + static_cast(p->second)))) + continue; + + const Symbol* gsym = this->global_symbol(r_sym); + if (from == gsym->name()) + { + if (tosym == NULL) + { + tosym = symtab->lookup(to.c_str()); + if (tosym == NULL) + { + this->error(_("could not convert call " + "to '%s' to '%s'"), + from.c_str(), to.c_str()); + break; + } + } + + if (*reloc_map == NULL) + *reloc_map = new Reloc_symbol_changes(reloc_count); + (*reloc_map)->set(i, tosym); + } + } + } + } } -// Emit a reloc into a SHT_RELA section. +// Find all the function in this object defined in section SHNDX. +// Store their offsets in the section in FUNCTION_OFFSETS. template void -Copy_relocs::Copy_reloc_entry::emit( - Output_data_reloc* reloc_data) +Sized_relobj_file::find_functions( + const unsigned char* pshdrs, + unsigned int shndx, + Sized_relobj_file::Function_offsets* function_offsets) { - this->sym_->set_needs_dynsym_entry(); - reloc_data->add_global(this->sym_, this->reloc_type_, this->output_section_, - this->relobj_, this->shndx_, this->address_, - this->addend_); -} + // We need to read the symbols to find the functions. If we wanted + // to, we could cache reading the symbols across all sections in the + // object. + const unsigned int symtab_shndx = this->symtab_shndx_; + typename This::Shdr symtabshdr(pshdrs + symtab_shndx * This::shdr_size); + gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); + + typename elfcpp::Elf_types::Elf_WXword sh_size = + symtabshdr.get_sh_size(); + const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), + sh_size, true, true); + + const int sym_size = This::sym_size; + const unsigned int symcount = sh_size / sym_size; + for (unsigned int i = 0; i < symcount; ++i, psyms += sym_size) + { + typename elfcpp::Sym isym(psyms); -// Copy_relocs methods. + // FIXME: Some targets can have functions which do not have type + // STT_FUNC, e.g., STT_ARM_TFUNC. + if (isym.get_st_type() != elfcpp::STT_FUNC + || isym.get_st_size() == 0) + continue; -// Return whether we need a COPY reloc for a relocation against GSYM. -// The relocation is being applied to section SHNDX in OBJECT. + bool is_ordinary; + Symbol_location loc; + loc.shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(), + &is_ordinary); + if (!is_ordinary) + continue; -template -bool -Copy_relocs::need_copy_reloc( - const General_options*, - Relobj* object, - unsigned int shndx, - Sized_symbol* sym) -{ - // FIXME: Handle -z nocopyrelocs. + loc.object = this; + loc.offset = isym.get_st_value(); + parameters->target().function_location(&loc); - if (sym->symsize() == 0) - return false; + if (loc.shndx != shndx) + continue; - // If this is a readonly section, then we need a COPY reloc. - // Otherwise we can use a dynamic reloc. - if ((object->section_flags(shndx) & elfcpp::SHF_WRITE) == 0) - return true; + section_offset_type value = + convert_to_section_size_type(loc.offset); + section_size_type fnsize = + convert_to_section_size_type(isym.get_st_size()); - return false; + (*function_offsets)[value] = fnsize; + } } -// Save a Rel reloc. +// Reverse the words in a section. Used for .ctors sections mapped to +// .init_array sections. See ctors_sections_in_init_array in +// layout.cc. template void -Copy_relocs::save( - Symbol* sym, - Relobj* relobj, - unsigned int shndx, - Output_section* output_section, - const elfcpp::Rel& rel) +Sized_relobj_file::reverse_words(unsigned char* view, + section_size_type view_size) { - unsigned int reloc_type = elfcpp::elf_r_type(rel.get_r_info()); - this->entries_.push_back(Copy_reloc_entry(sym, reloc_type, relobj, shndx, - output_section, - rel.get_r_offset(), 0)); + typedef typename elfcpp::Swap::Valtype Valtype; + Valtype* vview = reinterpret_cast(view); + section_size_type vview_size = view_size / (size / 8); + for (section_size_type i = 0; i < vview_size / 2; ++i) + { + Valtype tmp = vview[i]; + vview[i] = vview[vview_size - 1 - i]; + vview[vview_size - 1 - i] = tmp; + } } -// Save a Rela reloc. +// Class Merged_symbol_value. -template +template void -Copy_relocs::save( - Symbol* sym, - Relobj* relobj, - unsigned int shndx, - Output_section* output_section, - const elfcpp::Rela& rela) +Merged_symbol_value::initialize_input_to_output_map( + const Relobj* object, + unsigned int input_shndx) { - unsigned int reloc_type = elfcpp::elf_r_type(rela.get_r_info()); - this->entries_.push_back(Copy_reloc_entry(sym, reloc_type, relobj, shndx, - output_section, - rela.get_r_offset(), - rela.get_r_addend())); + object->initialize_input_to_output_map(input_shndx, + this->output_start_address_, + &this->output_addresses_); } -// Return whether there are any relocs to emit. We don't want to emit -// a reloc if the symbol is no longer defined in a dynamic object. +// Get the output value corresponding to an input offset if we +// couldn't find it in the hash table. -template -bool -Copy_relocs::any_to_emit() +template +typename elfcpp::Elf_types::Elf_Addr +Merged_symbol_value::value_from_output_section( + const Relobj* object, + unsigned int input_shndx, + typename elfcpp::Elf_types::Elf_Addr input_offset) const { - for (typename Copy_reloc_entries::iterator p = this->entries_.begin(); - p != this->entries_.end(); - ++p) - { - if (p->should_emit()) - return true; - } - return false; -} + section_offset_type output_offset; + bool found = object->merge_output_offset(input_shndx, input_offset, + &output_offset); -// Emit relocs. + // If this assertion fails, it means that some relocation was + // against a portion of an input merge section which we didn't map + // to the output file and we didn't explicitly discard. We should + // always map all portions of input merge sections. + gold_assert(found); -template -template -void -Copy_relocs::emit( - Output_data_reloc* reloc_data) -{ - for (typename Copy_reloc_entries::iterator p = this->entries_.begin(); - p != this->entries_.end(); - ++p) - { - if (p->should_emit()) - p->emit(reloc_data); - } + if (output_offset == -1) + return 0; + else + return this->output_start_address_ + output_offset; } // Track_relocs methods. @@ -1158,11 +1545,23 @@ Track_relocs::next_symndx() const { if (this->pos_ >= this->len_) return -1U; + Sized_target* target + = parameters->sized_target(); + return target->get_r_sym(this->prelocs_ + this->pos_); +} - // Rel and Rela start out the same, so we can use Rel to find the - // symbol index. - elfcpp::Rel rel(this->prelocs_ + this->pos_); - return elfcpp::elf_r_sym(rel.get_r_info()); +// Return the addend of the next reloc, or 0 if there isn't one. + +template +uint64_t +Track_relocs::next_addend() const +{ + if (this->pos_ >= this->len_) + return 0; + if (this->reloc_size_ == elfcpp::Elf_sizes::rel_size) + return 0; + elfcpp::Rela rela(this->prelocs_ + this->pos_); + return rela.get_r_addend(); } // Advance to the next reloc whose r_offset is greater than or equal @@ -1186,199 +1585,254 @@ Track_relocs::advance(off_t offset) return ret; } -// Instantiate the templates we need. We could use the configure -// script to restrict this to only the ones for implemented targets. +// Instantiate the templates we need. #ifdef HAVE_TARGET_32_LITTLE template void -Sized_relobj<32, false>::do_read_relocs(Read_relocs_data* rd); +Sized_relobj_file<32, false>::do_read_relocs(Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_32_BIG template void -Sized_relobj<32, true>::do_read_relocs(Read_relocs_data* rd); +Sized_relobj_file<32, true>::do_read_relocs(Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_LITTLE template void -Sized_relobj<64, false>::do_read_relocs(Read_relocs_data* rd); +Sized_relobj_file<64, false>::do_read_relocs(Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_BIG template void -Sized_relobj<64, true>::do_read_relocs(Read_relocs_data* rd); +Sized_relobj_file<64, true>::do_read_relocs(Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_32_LITTLE template void -Sized_relobj<32, false>::do_scan_relocs(const General_options& options, - Symbol_table* symtab, - Layout* layout, - Read_relocs_data* rd); +Sized_relobj_file<32, false>::do_gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_32_BIG template void -Sized_relobj<32, true>::do_scan_relocs(const General_options& options, - Symbol_table* symtab, - Layout* layout, - Read_relocs_data* rd); +Sized_relobj_file<32, true>::do_gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_LITTLE template void -Sized_relobj<64, false>::do_scan_relocs(const General_options& options, - Symbol_table* symtab, - Layout* layout, - Read_relocs_data* rd); +Sized_relobj_file<64, false>::do_gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_BIG template void -Sized_relobj<64, true>::do_scan_relocs(const General_options& options, - Symbol_table* symtab, - Layout* layout, - Read_relocs_data* rd); +Sized_relobj_file<64, true>::do_gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_32_LITTLE template void -Sized_relobj<32, false>::do_relocate(const General_options& options, - const Symbol_table* symtab, - const Layout* layout, - Output_file* of); +Sized_relobj_file<32, false>::do_scan_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_32_BIG template void -Sized_relobj<32, true>::do_relocate(const General_options& options, - const Symbol_table* symtab, - const Layout* layout, - Output_file* of); +Sized_relobj_file<32, true>::do_scan_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_LITTLE template void -Sized_relobj<64, false>::do_relocate(const General_options& options, - const Symbol_table* symtab, - const Layout* layout, - Output_file* of); +Sized_relobj_file<64, false>::do_scan_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif #ifdef HAVE_TARGET_64_BIG template void -Sized_relobj<64, true>::do_relocate(const General_options& options, - const Symbol_table* symtab, - const Layout* layout, - Output_file* of); +Sized_relobj_file<64, true>::do_scan_relocs(Symbol_table* symtab, + Layout* layout, + Read_relocs_data* rd); #endif -#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) +#ifdef HAVE_TARGET_32_LITTLE template -class Merged_symbol_value<32>; +void +Sized_relobj_file<32, false>::do_relocate(const Symbol_table* symtab, + const Layout* layout, + Output_file* of); #endif -#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) +#ifdef HAVE_TARGET_32_BIG template -class Merged_symbol_value<64>; +void +Sized_relobj_file<32, true>::do_relocate(const Symbol_table* symtab, + const Layout* layout, + Output_file* of); #endif -#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) +#ifdef HAVE_TARGET_64_LITTLE template -class Symbol_value<32>; +void +Sized_relobj_file<64, false>::do_relocate(const Symbol_table* symtab, + const Layout* layout, + Output_file* of); #endif -#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) +#ifdef HAVE_TARGET_64_BIG template -class Symbol_value<64>; +void +Sized_relobj_file<64, true>::do_relocate(const Symbol_table* symtab, + const Layout* layout, + Output_file* of); #endif #ifdef HAVE_TARGET_32_LITTLE template -class Copy_relocs<32, false>; +void +Sized_relobj_file<32, false>::do_relocate_sections( + const Symbol_table* symtab, + const Layout* layout, + const unsigned char* pshdrs, + Output_file* of, + Views* pviews); + +template +unsigned char* +Sized_relobj_file<32, false>::do_get_output_view( + unsigned int shndx, + section_size_type* plen) const; #endif #ifdef HAVE_TARGET_32_BIG template -class Copy_relocs<32, true>; +void +Sized_relobj_file<32, true>::do_relocate_sections( + const Symbol_table* symtab, + const Layout* layout, + const unsigned char* pshdrs, + Output_file* of, + Views* pviews); + +template +unsigned char* +Sized_relobj_file<32, true>::do_get_output_view( + unsigned int shndx, + section_size_type* plen) const; #endif #ifdef HAVE_TARGET_64_LITTLE template -class Copy_relocs<64, false>; +void +Sized_relobj_file<64, false>::do_relocate_sections( + const Symbol_table* symtab, + const Layout* layout, + const unsigned char* pshdrs, + Output_file* of, + Views* pviews); + +template +unsigned char* +Sized_relobj_file<64, false>::do_get_output_view( + unsigned int shndx, + section_size_type* plen) const; #endif #ifdef HAVE_TARGET_64_BIG template -class Copy_relocs<64, true>; +void +Sized_relobj_file<64, true>::do_relocate_sections( + const Symbol_table* symtab, + const Layout* layout, + const unsigned char* pshdrs, + Output_file* of, + Views* pviews); + +template +unsigned char* +Sized_relobj_file<64, true>::do_get_output_view( + unsigned int shndx, + section_size_type* plen) const; #endif #ifdef HAVE_TARGET_32_LITTLE template void -Copy_relocs<32, false>::emit( - Output_data_reloc*); +Sized_relobj_file<32, false>::initialize_input_to_output_maps(); + +template +void +Sized_relobj_file<32, false>::free_input_to_output_maps(); #endif #ifdef HAVE_TARGET_32_BIG template void -Copy_relocs<32, true>::emit( - Output_data_reloc*); +Sized_relobj_file<32, true>::initialize_input_to_output_maps(); + +template +void +Sized_relobj_file<32, true>::free_input_to_output_maps(); #endif #ifdef HAVE_TARGET_64_LITTLE template void -Copy_relocs<64, false>::emit( - Output_data_reloc*); +Sized_relobj_file<64, false>::initialize_input_to_output_maps(); + +template +void +Sized_relobj_file<64, false>::free_input_to_output_maps(); #endif #ifdef HAVE_TARGET_64_BIG template void -Copy_relocs<64, true>::emit( - Output_data_reloc*); -#endif +Sized_relobj_file<64, true>::initialize_input_to_output_maps(); -#ifdef HAVE_TARGET_32_LITTLE template void -Copy_relocs<32, false>::emit( - Output_data_reloc*); +Sized_relobj_file<64, true>::free_input_to_output_maps(); #endif -#ifdef HAVE_TARGET_32_BIG +#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) template -void -Copy_relocs<32, true>::emit( - Output_data_reloc*); +class Merged_symbol_value<32>; #endif -#ifdef HAVE_TARGET_64_LITTLE +#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) template -void -Copy_relocs<64, false>::emit( - Output_data_reloc*); +class Merged_symbol_value<64>; #endif -#ifdef HAVE_TARGET_64_BIG +#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) template -void -Copy_relocs<64, true>::emit( - Output_data_reloc*); +class Symbol_value<32>; +#endif + +#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) +template +class Symbol_value<64>; #endif #ifdef HAVE_TARGET_32_LITTLE