binutils-gdb/gold/target-reloc.h

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// target-reloc.h -- target specific relocation support -*- C++ -*-
// Copyright (C) 2006-2018 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
#ifndef GOLD_TARGET_RELOC_H
#define GOLD_TARGET_RELOC_H
#include "elfcpp.h"
#include "symtab.h"
* options.h (class General_options): Define split_stack_adjust_size parameter. * object.h (class Object): Add uses_split_stack_ and has_no_split_stack_ fields. Add uses_split_stack and has_no_split_stack accessor functions. Declare handle_split_stack_section. (class Reloc_symbol_changes): Define. (class Sized_relobj): Define Function_offsets. Declare split_stack_adjust, split_stack_adjust_reltype, and find_functions. * object.cc (Object::handle_split_stack_section): New function. (Sized_relobj::do_layout): Call handle_split_stack_section. * dynobj.cc (Sized_dynobj::do_layout): Call handle_split_stack_section. * reloc.cc (Sized_relobj::relocate_sections): Call split_stack_adjust for executable sections in split_stack objects. Pass reloc_map to relocate_section. (Sized_relobj::split_stack_adjust): New function. (Sized_relobj::split_stack_adjust_reltype): New function. (Sized_relobj::find_functions): New function. * target-reloc.h: Include "object.h". (relocate_section): Add reloc_symbol_changes parameter. Change all callers. * target.h (class Target): Add calls_non_split method. Declare do_calls_non_split virtual method. Declare match_view and set_view_to_nop. * target.cc: Include "elfcpp.h". (Target::do_calls_non_split): New function. (Target::match_view): New function. (Target::set_view_to_nop): New function. * gold.cc (queue_middle_tasks): Give an error if mixing split-stack and non-split-stack objects with -r. * i386.cc (Target_i386::relocate_section): Add reloc_symbol_changes parameter. (Target_i386::do_calls_non_split): New function. * x86_64.cc (Target_x86_64::relocate_section): Add reloc_symbol_changes parameter. (Target_x86_64::do_calls_non_split): New function. * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes parameter. * powerpc.cc (Target_powerpc::relocate_section): Add reloc_symbol_changes parameter. * sparc.cc (Target_sparc::relocate_section): Add reloc_symbol_changes parameter. * configure.ac: Call AM_CONDITIONAL for the default target. * configure: Rebuild. * testsuite/Makefile.am (TEST_AS): New variable. (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh. (check_DATA): Add split_i386 and split_x86_64 files. (SPLIT_DEFSYMS): Define. (split_i386_[1234n].o): New targets. (split_i386_[124]): New targets. (split_i386_[1234r].stdout): New targets. (split_x86_64_[1234n].o): New targets. (split_x86_64_[124]): New targets. (split_x86_64_[1234r].stdout): New targets. (MOSTLYCLEANFILES): Add new executables. * testsuite/split_i386.sh: New file. * testsuite/split_x86_64.sh: New file. * testsuite/split_i386_1.s: New file. * testsuite/split_i386_2.s: New file. * testsuite/split_i386_3.s: New file. * testsuite/split_i386_4.s: New file. * testsuite/split_i386_n.s: New file. * testsuite/split_x86_64_1.s: New file. * testsuite/split_x86_64_2.s: New file. * testsuite/split_x86_64_3.s: New file. * testsuite/split_x86_64_4.s: New file. * testsuite/split_x86_64_n.s: New file. * testsuite/testfile.cc (Target_test): Update relocation_section function. * testsuite/Makefile.in: Rebuild.
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#include "object.h"
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#include "reloc.h"
#include "reloc-types.h"
namespace gold
{
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// This function implements the generic part of reloc scanning. The
// template parameter Scan must be a class type which provides two
// functions: local() and global(). Those functions implement the
// machine specific part of scanning. We do it this way to
// avoid making a function call for each relocation, and to avoid
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// repeating the generic code for each target.
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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template<int size, bool big_endian, typename Target_type,
typename Scan, typename Classify_reloc>
inline void
scan_relocs(
Symbol_table* symtab,
Layout* layout,
Target_type* target,
* incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc info; adjust display of GOT entries. * incremental.cc (Sized_incremental_binary::setup_readers): Allocate vector of input objects; remove file_status_. (Sized_incremental_binary::do_reserve_layout): Remove file_status_. (Sized_incremental_binary::do_process_got_plt): Adjust calls to got_plt reader; call target hooks to reserve GOT entries. (Output_section_incremental_inputs::set_final_data_size): Adjust size of input file info header and GOT info entry. (Output_section_incremental_inputs::write_info_blocks): Write dynamic relocation info. (Got_plt_view_info::got_descriptor): Remove. (Got_plt_view_info::sym_index): New data member. (Got_plt_view_info::input_index): New data member. (Local_got_offset_visitor::visit): Write input file index. (Global_got_offset_visitor::visit): Write 0 for input file index. (Global_symbol_visitor_got_plt::operator()): Replace got_descriptor with sym_index and input_index. (Output_section_incremental_inputs::write_got_plt): Adjust size of incremental info GOT entry; replace got_descriptor with input_index. (Sized_relobj_incr::Sized_relobj_incr): Adjust initializers; record map from input file index to object. (Sized_relobj_incr::do_layout): Replace direct data member reference with accessor function. (Sized_relobj_incr::do_for_all_local_got_entries): Move to base class. * incremental.h (Incremental_input_entry_reader::get_symbol_offset): Adjust size of input file info header. (Incremental_input_entry_reader::get_first_dyn_reloc): New function. (Incremental_input_entry_reader::get_dyn_reloc_count): New function. (Incremental_input_entry_reader::get_input_section): Adjust size of input file info header. (Incremental_got_plt_reader::Incremental_got_plt_reader): Adjust size of incremental info GOT entry. (Incremental_got_plt_reader::get_got_desc): Remove. (Incremental_got_plt_reader::get_got_symndx): New function. (Incremental_got_plt_reader::get_got_input_index): New function. (Sized_incremental_binary::Sized_incremental_binary): Remove file_status_; add input_objects_. (Sized_incremental_binary::~Sized_incremental_binary): Remove. (Sized_incremental_binary::set_file_is_unchanged): Remove. (Sized_incremental_binary::file_is_unchanged): Remove. (Sized_incremental_binary::set_input_object): New function. (Sized_incremental_binary::input_object): New function. (Sized_incremental_binary::file_status_): Remove. (Sized_incremental_binary::input_objects_): New data member. (Sized_relobj_incr): Rename Sized_incr_relobj to this; adjust all references. (Sized_relobj_incr::invalid_address): Move to base class. (Sized_relobj_incr::is_output_section_offset_invalid): Move to base class. (Sized_relobj_incr::do_output_section_offset): Likewise. (Sized_relobj_incr::do_for_all_local_got_entries): Likewise. (Sized_relobj_incr::section_offsets_): Likewise. * object.cc (Sized_relobj::do_for_all_local_got_entries): New function. (Sized_relobj_file::Sized_relobj_file): Remove local_got_offsets_. (Sized_relobj_file::layout_section): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_layout): Likewise. (Sized_relobj_file::do_layout_deferred_sections): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Move to base class. (Sized_relobj_file::compute_final_local_value): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_finalize_local_symbols): Likewise. * object.h (Relobj::Relobj): Initialize new data members. (Relobj::add_dyn_reloc): New function. (Relobj::first_dyn_reloc): New function. (Relobj::dyn_reloc_count): New function. (Relobj::first_dyn_reloc_): New data member. (Relobj::dyn_reloc_count_): New data member. (Sized_relobj): Rename Sized_relobj_base to this; adjust all references. (Sized_relobj::Address): New typedef. (Sized_relobj::invalid_address): Move here from child class. (Sized_relobj::Sized_relobj): Initialize new data members. (Sized_relobj::sized_relobj): New function. (Sized_relobj::is_output_section_offset_invalid): Move here from child class. (Sized_relobj::get_output_section_offset): Likewise. (Sized_relobj::local_has_got_offset): Likewise. (Sized_relobj::local_got_offset): Likewise. (Sized_relobj::set_local_got_offset): Likewise. (Sized_relobj::do_for_all_local_got_entries): Likewise. (Sized_relobj::clear_got_offsets): New function. (Sized_relobj::section_offsets): Move here from child class. (Sized_relobj::do_output_section_offset): Likewise. (Sized_relobj::do_set_section_offset): Likewise. (Sized_relobj::Local_got_offsets): Likewise. (Sized_relobj::local_got_offsets_): Likewise. (Sized_relobj::section_offsets_): Likewise. (Sized_relobj_file): Rename Sized_relobj to this; adjust all references. (Sized_relobj_file::is_output_section_offset_invalid): Move to base class. (Sized_relobj_file::sized_relobj): New function (Sized_relobj_file::local_has_got_offset): Move to base class. (Sized_relobj_file::local_got_offset): Likewise. (Sized_relobj_file::set_local_got_offset): Likewise. (Sized_relobj_file::get_output_section_offset): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Likewise. (Sized_relobj_file::do_output_section_offset): Likewise. (Sized_relobj_file::do_set_section_offset): Likewise. (Sized_relobj_file::Local_got_offsets): Likewise. (Sized_relobj_file::local_got_offsets_): Likewise. (Sized_relobj_file::section_offsets_): Likewise. * output.cc (Output_reloc::Output_reloc): Adjust type of relobj (all constructors). (set_needs_dynsym_index): Convert relobj to derived class pointer. (Output_reloc::get_symbol_index): Likewise. (Output_reloc::local_section_offset): Likewise. (Output_reloc::get_address): Likewise. (Output_reloc::symbol_value): Likewise. (Output_data_got::reserve_slot): Move to class definition. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_slot_for_global): Remove. (Output_data_got::reserve_global): New function. * output.h (Output_reloc::Output_reloc): Adjust type of relobj (all constructors, two instantiations). (Output_reloc::get_relobj): New function (two instantiations). (Output_reloc::u1_.relobj, Output_reloc::u2_.relobj): Adjust type. (Output_data_reloc_base::add): Convert relobj to derived class pointer. (Output_data_reloc::add_global): Adjust type of relobj. (Output_data_reloc::add_global_relative): Likewise. (Output_data_reloc::add_symbolless_global_addend): Likewise. (Output_data_reloc::add_local): Likewise. (Output_data_reloc::add_local_relative): Likewise. (Output_data_reloc::add_symbolless_local_addend): Likewise. (Output_data_reloc::add_local_section): Likewise. (Output_data_reloc::add_output_section): Likewise. (Output_data_reloc::add_absolute): Likewise. (Output_data_reloc::add_target_specific): Likewise. (Output_data_got::reserve_slot): Move definition here. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_global): New function. * reloc.cc (Sized_relobj_file::do_read_relocs): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::write_sections): Likewise. (Sized_relobj_file::do_relocate_sections): Likewise. * target.h (Sized_target::reserve_local_got_entry): New function. (Sized_target::reserve_global_got_entry): New function. * x86_64.cc (Target_x86_64::reserve_local_got_entry): New function. (Target_x86_64::reserve_global_got_entry): New function. (Target_x86_64::init_got_plt_for_update): Create rela_dyn section.
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Sized_relobj_file<size, big_endian>* object,
unsigned int data_shndx,
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
bool needs_special_offset_handling,
size_t local_count,
const unsigned char* plocal_syms)
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
typedef typename Classify_reloc::Reltype Reltype;
const int reloc_size = Classify_reloc::reloc_size;
const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
Scan scan;
for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
{
Reltype reloc(prelocs);
if (needs_special_offset_handling
&& !output_section->is_input_address_mapped(object, data_shndx,
reloc.get_r_offset()))
continue;
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
unsigned int r_sym = Classify_reloc::get_r_sym(&reloc);
unsigned int r_type = Classify_reloc::get_r_type(&reloc);
if (r_sym < local_count)
{
gold_assert(plocal_syms != NULL);
typename elfcpp::Sym<size, big_endian> lsym(plocal_syms
+ r_sym * sym_size);
* object.cc (Xindex::initialize_symtab_xindex): New function. (Xindex::read_symtab_xindex): New function. (Xindex::sym_xindex_to_shndx): New function. (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if available. (Sized_relobj::do_initialize_xindex): New function. (Sized_relobj::do_read_symbols): Adjust section links. (Sized_relobj::symbol_section_and_value): Add is_ordinary parameter. Change all callers. (Sized_relobj::include_section_group): Adjust section links and symbol section indexes. (Sized_relobj::do_layout): Adjust section links. (Sized_relobj::do_count_local_symbols): Adjust section links and symbol section indexes. (Sized_relobj::do_finalize_local_symbols): Distinguish between ordinary and special symbols. (Sized_relobj::write_local_symbols): Add symtab_xindex and dynsym_xindex parameters. Change all callers. Adjust section links. Use SHN_XINDEX when needed. (Sized_relobj::get_symbol_location_info): Adjust section links. Don't get fooled by special symbols. * object.h (class Xindex): Define. (class Object): Add xindex_ parameter. Declare virtual functoin do_initialize_xindex. (Object::adjust_sym_shndx): New function. (Object::set_xindex): New protected function. (class Symbol_value): Add is_ordinary_shndx_ field. (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_. (Symbol_value::value): Assert ordinary section. (Symbol_value::initialize_input_to_output_map): Likewise. (Symbol_value::set_input_shndx): Add is_ordinary parameter. Change all callers. (Symbol_value::input_shndx): Add is_ordinary parameter. Change all callers. (class Sized_relobj): Update declarations. (Sized_relobj::local_symbol_input_shndx): Add is_ordinary parameter. Change all callers. (Sized_relobj::adjust_shndx): New function. * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_ field. (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx parameter. Change all callers. Pick up SHT_DYNSYM_SHNDX section for SHT_DYNSYM section if available. Set dynsym_shndx_ field. (Sized_dynobj::read_dynsym_section): Adjust section links. (Sized_dynobj::read_dynamic): Likewise. (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field. Adjust section links. (Sized_dynobj::do_initialize_xindex): New function. * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field. Declare do_initialize_xindex. (Sized_dynobj::adjust_shndx): New function. * layout.cc (Layout::Layout): Initialize symtab_xindex_ and dynsym_xindex_ fields. (Layout::finalize): Add a call to set_section_indexes before creating the symtab sections. (Layout::set_section_indexes): Don't do anything if the section already has a section index. (Layout::create_symtab_sections): Add shnum parameter. Change caller. Create .symtab_shndx section if needed. (Layout::create_shdrs): Add shstrtab_section parameter. Change caller. (Layout::allocated_output_section_count): New function. (Layout::create_dynamic_symtab): Create .dynsym_shndx section if needed. * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_ fields. Update declarations. (Layout::symtab_xindex): New function. (Layout::dynsym_xindex): New function. (class Write_symbols_task): Add layout_ field. (Write_symbols_task::Write_symbols_task): Add layout parameter. Change caller. * output.cc (Output_section_headers::Output_section_headers): Add shstrtab_section parameter. Change all callers. (Output_section_headers::do_sized_write): Store overflow values for section count and section string table section index in section header zero. (Output_file_header::do_sized_write): Check for overflow of section count and section string table section index. (Output_symtab_xindex::do_write): New function. (Output_symtab_xindex::endian_do_write): New function. * output.h (class Output_section_headers): Add shstrtab_section_. Update declarations. (class Output_symtab_xindex): Define. (Output_section::has_out_shndx): New function. * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_ field. (Symbol::init_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::init): Likewise. (Symbol::output_section): Check for ordinary symbol. (Symbol_table::add_from_object): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. (Symbol_table::add_from_relobj): Add symndx_offset parameter. Change all callers. Simplify handling of symbols from sections not included in the link. (Symbol_table::add_from_dynobj): Handle ordinary symbol distinction. (Weak_alias_sorter::operator()): Assert that symbols are ordinary. (Symbol_table::sized_finalize_symbol): Handle ordinary symbol distinction. (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex parameters. Change all callers. (Symbol_table::sized_write_globals): Likewise. Handle ordinary symbol distinction. Use SHN_XINDEX when needed. (Symbol_table::write_section_symbol): Add symtab_xindex parameter. Change all callers. (Symbol_table::sized_write_section_symbol): Likewise. Use SHN_XINDEX when needed. * symtab.h (class Symbol): Add is_ordinary_shndx_ field. Update declarations. (Symbol::shndx): Add is_ordinary parameter. Change all callers. (Symbol::is_defined): Check is_ordinary. (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise. (Symbol::is_absolute, Symbol::is_common): Likewise. (class Sized_symbol): Update declarations. (class Symbol_table): Update declarations. * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::override): Likewise. (Symbol_table::override): Likewise. (symbol_to_bits): Add is_ordinary parameter. Change all callers. (Symbol_table::resolve): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol to be in an ordinary section. * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add object and is_ordinary parameters. Change all callers. (Sized_dwarf_line_info::read_relocs): Add object parameter. Change all callers. Don't add undefined or non-ordinary symbols to reloc_map_. (Sized_dwarf_line_info::read_line_mappings): Add object parameter. Change all callers. * dwarf_reader.h (class Sized_dwarf_line_info): Update declarations. * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol. * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links. (Sized_relobj::relocate_sections): Likewise. * target-reloc.h (scan_relocs): Adjust section symbol index. (scan_relocatable_relocs): Likewise. * i386.cc (Scan::local): Check for ordinary symbols. * sparc.cc (Scan::local): Likewise. * x86_64.cc (Scan::local): Likewise. * testsuite/binary_unittest.cc (Sized_binary_test): Update calls to symbol_section_and_value. * testsuite/many_sections_test.cc: New file. * testsuite/Makefile.am (BUILT_SOURCES): Define. (check_PROGRAMS): Add many_sections_test. (many_sections_test_SOURCES): Define. (many_sections_test_DEPENDENCIES): Define. (many_sections_test_LDFLAGS): Define. (BUILT_SOURCES): Add many_sections_define.h. (many_sections_define.h): New target. (BUILT_SOURCES): Add many_sections_check.h. (many_sections_check.h): New target. (check_PROGRAMS): Add many_sections_r_test. (many_sections_r_test_SOURCES): Define. (many_sections_r_test_DEPENDENCIES): Define. (many_sections_r_test_LDFLAGS): Define. (many_sections_r_test_LDADD): Define. (many_sections_r_test.o): New target. * testsuite/Makefile.in: Rebuild.
2008-04-19 20:30:58 +02:00
unsigned int shndx = lsym.get_st_shndx();
bool is_ordinary;
shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
// If RELOC is a relocation against a local symbol in a
// section we are discarding then we can ignore it. It will
// eventually become a reloc against the value zero.
//
// FIXME: We should issue a warning if this is an
// allocated section; is this the best place to do it?
//
// FIXME: The old GNU linker would in some cases look
// for the linkonce section which caused this section to
// be discarded, and, if the other section was the same
// size, change the reloc to refer to the other section.
// That seems risky and weird to me, and I don't know of
// any case where it is actually required.
bool is_discarded = (is_ordinary
&& shndx != elfcpp::SHN_UNDEF
&& !object->is_section_included(shndx)
&& !symtab->is_section_folded(object, shndx));
scan.local(symtab, layout, target, object, data_shndx,
output_section, reloc, r_type, lsym, is_discarded);
}
else
{
Symbol* gsym = object->global_symbol(r_sym);
gold_assert(gsym != NULL);
if (gsym->is_forwarder())
gsym = symtab->resolve_forwards(gsym);
scan.global(symtab, layout, target, object, data_shndx,
output_section, reloc, r_type, gsym);
}
}
}
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
// Behavior for relocations to discarded comdat sections.
enum Comdat_behavior
{
CB_UNDETERMINED, // Not yet determined -- need to look at section name.
CB_PRETEND, // Attempt to map to the corresponding kept section.
CB_IGNORE, // Ignore the relocation.
CB_WARNING // Print a warning.
};
class Default_comdat_behavior
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
{
public:
// Decide what the linker should do for relocations that refer to
// discarded comdat sections. This decision is based on the name of
// the section being relocated.
inline Comdat_behavior
get(const char* name)
{
if (Layout::is_debug_info_section(name))
return CB_PRETEND;
if (strcmp(name, ".eh_frame") == 0
|| strcmp(name, ".gcc_except_table") == 0)
return CB_IGNORE;
return CB_WARNING;
}
};
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
// Give an error for a symbol with non-default visibility which is not
// defined locally.
inline void
visibility_error(const Symbol* sym)
{
const char* v;
switch (sym->visibility())
{
case elfcpp::STV_INTERNAL:
v = _("internal");
break;
case elfcpp::STV_HIDDEN:
v = _("hidden");
break;
case elfcpp::STV_PROTECTED:
v = _("protected");
break;
default:
gold_unreachable();
}
gold_error(_("%s symbol '%s' is not defined locally"),
v, sym->name());
}
// Return true if we are should issue an error saying that SYM is an
// undefined symbol. This is called if there is a relocation against
// SYM.
inline bool
issue_undefined_symbol_error(const Symbol* sym)
{
// We only report global symbols.
if (sym == NULL)
return false;
// We only report undefined symbols.
if (!sym->is_undefined() && !sym->is_placeholder())
return false;
// We don't report weak symbols.
if (sym->is_weak_undefined())
return false;
// We don't report symbols defined in discarded sections,
// unless they're placeholder symbols that should have been
// provided by a plugin.
if (sym->is_defined_in_discarded_section() && !sym->is_placeholder())
return false;
// If the target defines this symbol, don't report it here.
if (parameters->target().is_defined_by_abi(sym))
return false;
// See if we've been told to ignore whether this symbol is
// undefined.
const char* const u = parameters->options().unresolved_symbols();
if (u != NULL)
{
if (strcmp(u, "ignore-all") == 0)
return false;
if (strcmp(u, "report-all") == 0)
return true;
if (strcmp(u, "ignore-in-object-files") == 0 && !sym->in_dyn())
return false;
if (strcmp(u, "ignore-in-shared-libs") == 0 && !sym->in_reg())
return false;
}
// If the symbol is hidden, report it.
if (sym->visibility() == elfcpp::STV_HIDDEN)
return true;
// When creating a shared library, only report unresolved symbols if
// -z defs was used.
if (parameters->options().shared() && !parameters->options().defs())
return false;
// Otherwise issue a warning.
return true;
}
// This function implements the generic part of relocation processing.
2008-02-06 09:13:50 +01:00
// The template parameter Relocate must be a class type which provides
// a single function, relocate(), which implements the machine
// specific part of a relocation.
// The template parameter Relocate_comdat_behavior is a class type
// which provides a single function, get(), which determines what the
// linker should do for relocations that refer to discarded comdat
// sections.
// SIZE is the ELF size: 32 or 64. BIG_ENDIAN is the endianness of
// the data. SH_TYPE is the section type: SHT_REL or SHT_RELA.
// RELOCATE implements operator() to do a relocation.
// PRELOCS points to the relocation data. RELOC_COUNT is the number
// of relocs. OUTPUT_SECTION is the output section.
// NEEDS_SPECIAL_OFFSET_HANDLING is true if input offsets need to be
// mapped to output offsets.
// VIEW is the section data, VIEW_ADDRESS is its memory address, and
// VIEW_SIZE is the size. These refer to the input section, unless
// NEEDS_SPECIAL_OFFSET_HANDLING is true, in which case they refer to
// the output section.
* options.h (class General_options): Define split_stack_adjust_size parameter. * object.h (class Object): Add uses_split_stack_ and has_no_split_stack_ fields. Add uses_split_stack and has_no_split_stack accessor functions. Declare handle_split_stack_section. (class Reloc_symbol_changes): Define. (class Sized_relobj): Define Function_offsets. Declare split_stack_adjust, split_stack_adjust_reltype, and find_functions. * object.cc (Object::handle_split_stack_section): New function. (Sized_relobj::do_layout): Call handle_split_stack_section. * dynobj.cc (Sized_dynobj::do_layout): Call handle_split_stack_section. * reloc.cc (Sized_relobj::relocate_sections): Call split_stack_adjust for executable sections in split_stack objects. Pass reloc_map to relocate_section. (Sized_relobj::split_stack_adjust): New function. (Sized_relobj::split_stack_adjust_reltype): New function. (Sized_relobj::find_functions): New function. * target-reloc.h: Include "object.h". (relocate_section): Add reloc_symbol_changes parameter. Change all callers. * target.h (class Target): Add calls_non_split method. Declare do_calls_non_split virtual method. Declare match_view and set_view_to_nop. * target.cc: Include "elfcpp.h". (Target::do_calls_non_split): New function. (Target::match_view): New function. (Target::set_view_to_nop): New function. * gold.cc (queue_middle_tasks): Give an error if mixing split-stack and non-split-stack objects with -r. * i386.cc (Target_i386::relocate_section): Add reloc_symbol_changes parameter. (Target_i386::do_calls_non_split): New function. * x86_64.cc (Target_x86_64::relocate_section): Add reloc_symbol_changes parameter. (Target_x86_64::do_calls_non_split): New function. * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes parameter. * powerpc.cc (Target_powerpc::relocate_section): Add reloc_symbol_changes parameter. * sparc.cc (Target_sparc::relocate_section): Add reloc_symbol_changes parameter. * configure.ac: Call AM_CONDITIONAL for the default target. * configure: Rebuild. * testsuite/Makefile.am (TEST_AS): New variable. (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh. (check_DATA): Add split_i386 and split_x86_64 files. (SPLIT_DEFSYMS): Define. (split_i386_[1234n].o): New targets. (split_i386_[124]): New targets. (split_i386_[1234r].stdout): New targets. (split_x86_64_[1234n].o): New targets. (split_x86_64_[124]): New targets. (split_x86_64_[1234r].stdout): New targets. (MOSTLYCLEANFILES): Add new executables. * testsuite/split_i386.sh: New file. * testsuite/split_x86_64.sh: New file. * testsuite/split_i386_1.s: New file. * testsuite/split_i386_2.s: New file. * testsuite/split_i386_3.s: New file. * testsuite/split_i386_4.s: New file. * testsuite/split_i386_n.s: New file. * testsuite/split_x86_64_1.s: New file. * testsuite/split_x86_64_2.s: New file. * testsuite/split_x86_64_3.s: New file. * testsuite/split_x86_64_4.s: New file. * testsuite/split_x86_64_n.s: New file. * testsuite/testfile.cc (Target_test): Update relocation_section function. * testsuite/Makefile.in: Rebuild.
2009-10-07 00:58:27 +02:00
// RELOC_SYMBOL_CHANGES is used for -fsplit-stack support. If it is
// not NULL, it is a vector indexed by relocation index. If that
// entry is not NULL, it points to a global symbol which used as the
// symbol for the relocation, ignoring the symbol index in the
// relocation.
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
template<int size, bool big_endian, typename Target_type,
typename Relocate,
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
typename Relocate_comdat_behavior,
typename Classify_reloc>
inline void
relocate_section(
const Relocate_info<size, big_endian>* relinfo,
Target_type* target,
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
bool needs_special_offset_handling,
unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
* options.h (class General_options): Define split_stack_adjust_size parameter. * object.h (class Object): Add uses_split_stack_ and has_no_split_stack_ fields. Add uses_split_stack and has_no_split_stack accessor functions. Declare handle_split_stack_section. (class Reloc_symbol_changes): Define. (class Sized_relobj): Define Function_offsets. Declare split_stack_adjust, split_stack_adjust_reltype, and find_functions. * object.cc (Object::handle_split_stack_section): New function. (Sized_relobj::do_layout): Call handle_split_stack_section. * dynobj.cc (Sized_dynobj::do_layout): Call handle_split_stack_section. * reloc.cc (Sized_relobj::relocate_sections): Call split_stack_adjust for executable sections in split_stack objects. Pass reloc_map to relocate_section. (Sized_relobj::split_stack_adjust): New function. (Sized_relobj::split_stack_adjust_reltype): New function. (Sized_relobj::find_functions): New function. * target-reloc.h: Include "object.h". (relocate_section): Add reloc_symbol_changes parameter. Change all callers. * target.h (class Target): Add calls_non_split method. Declare do_calls_non_split virtual method. Declare match_view and set_view_to_nop. * target.cc: Include "elfcpp.h". (Target::do_calls_non_split): New function. (Target::match_view): New function. (Target::set_view_to_nop): New function. * gold.cc (queue_middle_tasks): Give an error if mixing split-stack and non-split-stack objects with -r. * i386.cc (Target_i386::relocate_section): Add reloc_symbol_changes parameter. (Target_i386::do_calls_non_split): New function. * x86_64.cc (Target_x86_64::relocate_section): Add reloc_symbol_changes parameter. (Target_x86_64::do_calls_non_split): New function. * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes parameter. * powerpc.cc (Target_powerpc::relocate_section): Add reloc_symbol_changes parameter. * sparc.cc (Target_sparc::relocate_section): Add reloc_symbol_changes parameter. * configure.ac: Call AM_CONDITIONAL for the default target. * configure: Rebuild. * testsuite/Makefile.am (TEST_AS): New variable. (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh. (check_DATA): Add split_i386 and split_x86_64 files. (SPLIT_DEFSYMS): Define. (split_i386_[1234n].o): New targets. (split_i386_[124]): New targets. (split_i386_[1234r].stdout): New targets. (split_x86_64_[1234n].o): New targets. (split_x86_64_[124]): New targets. (split_x86_64_[1234r].stdout): New targets. (MOSTLYCLEANFILES): Add new executables. * testsuite/split_i386.sh: New file. * testsuite/split_x86_64.sh: New file. * testsuite/split_i386_1.s: New file. * testsuite/split_i386_2.s: New file. * testsuite/split_i386_3.s: New file. * testsuite/split_i386_4.s: New file. * testsuite/split_i386_n.s: New file. * testsuite/split_x86_64_1.s: New file. * testsuite/split_x86_64_2.s: New file. * testsuite/split_x86_64_3.s: New file. * testsuite/split_x86_64_4.s: New file. * testsuite/split_x86_64_n.s: New file. * testsuite/testfile.cc (Target_test): Update relocation_section function. * testsuite/Makefile.in: Rebuild.
2009-10-07 00:58:27 +02:00
section_size_type view_size,
const Reloc_symbol_changes* reloc_symbol_changes)
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
typedef typename Classify_reloc::Reltype Reltype;
const int reloc_size = Classify_reloc::reloc_size;
Relocate relocate;
Relocate_comdat_behavior relocate_comdat_behavior;
* incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc info; adjust display of GOT entries. * incremental.cc (Sized_incremental_binary::setup_readers): Allocate vector of input objects; remove file_status_. (Sized_incremental_binary::do_reserve_layout): Remove file_status_. (Sized_incremental_binary::do_process_got_plt): Adjust calls to got_plt reader; call target hooks to reserve GOT entries. (Output_section_incremental_inputs::set_final_data_size): Adjust size of input file info header and GOT info entry. (Output_section_incremental_inputs::write_info_blocks): Write dynamic relocation info. (Got_plt_view_info::got_descriptor): Remove. (Got_plt_view_info::sym_index): New data member. (Got_plt_view_info::input_index): New data member. (Local_got_offset_visitor::visit): Write input file index. (Global_got_offset_visitor::visit): Write 0 for input file index. (Global_symbol_visitor_got_plt::operator()): Replace got_descriptor with sym_index and input_index. (Output_section_incremental_inputs::write_got_plt): Adjust size of incremental info GOT entry; replace got_descriptor with input_index. (Sized_relobj_incr::Sized_relobj_incr): Adjust initializers; record map from input file index to object. (Sized_relobj_incr::do_layout): Replace direct data member reference with accessor function. (Sized_relobj_incr::do_for_all_local_got_entries): Move to base class. * incremental.h (Incremental_input_entry_reader::get_symbol_offset): Adjust size of input file info header. (Incremental_input_entry_reader::get_first_dyn_reloc): New function. (Incremental_input_entry_reader::get_dyn_reloc_count): New function. (Incremental_input_entry_reader::get_input_section): Adjust size of input file info header. (Incremental_got_plt_reader::Incremental_got_plt_reader): Adjust size of incremental info GOT entry. (Incremental_got_plt_reader::get_got_desc): Remove. (Incremental_got_plt_reader::get_got_symndx): New function. (Incremental_got_plt_reader::get_got_input_index): New function. (Sized_incremental_binary::Sized_incremental_binary): Remove file_status_; add input_objects_. (Sized_incremental_binary::~Sized_incremental_binary): Remove. (Sized_incremental_binary::set_file_is_unchanged): Remove. (Sized_incremental_binary::file_is_unchanged): Remove. (Sized_incremental_binary::set_input_object): New function. (Sized_incremental_binary::input_object): New function. (Sized_incremental_binary::file_status_): Remove. (Sized_incremental_binary::input_objects_): New data member. (Sized_relobj_incr): Rename Sized_incr_relobj to this; adjust all references. (Sized_relobj_incr::invalid_address): Move to base class. (Sized_relobj_incr::is_output_section_offset_invalid): Move to base class. (Sized_relobj_incr::do_output_section_offset): Likewise. (Sized_relobj_incr::do_for_all_local_got_entries): Likewise. (Sized_relobj_incr::section_offsets_): Likewise. * object.cc (Sized_relobj::do_for_all_local_got_entries): New function. (Sized_relobj_file::Sized_relobj_file): Remove local_got_offsets_. (Sized_relobj_file::layout_section): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_layout): Likewise. (Sized_relobj_file::do_layout_deferred_sections): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Move to base class. (Sized_relobj_file::compute_final_local_value): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_finalize_local_symbols): Likewise. * object.h (Relobj::Relobj): Initialize new data members. (Relobj::add_dyn_reloc): New function. (Relobj::first_dyn_reloc): New function. (Relobj::dyn_reloc_count): New function. (Relobj::first_dyn_reloc_): New data member. (Relobj::dyn_reloc_count_): New data member. (Sized_relobj): Rename Sized_relobj_base to this; adjust all references. (Sized_relobj::Address): New typedef. (Sized_relobj::invalid_address): Move here from child class. (Sized_relobj::Sized_relobj): Initialize new data members. (Sized_relobj::sized_relobj): New function. (Sized_relobj::is_output_section_offset_invalid): Move here from child class. (Sized_relobj::get_output_section_offset): Likewise. (Sized_relobj::local_has_got_offset): Likewise. (Sized_relobj::local_got_offset): Likewise. (Sized_relobj::set_local_got_offset): Likewise. (Sized_relobj::do_for_all_local_got_entries): Likewise. (Sized_relobj::clear_got_offsets): New function. (Sized_relobj::section_offsets): Move here from child class. (Sized_relobj::do_output_section_offset): Likewise. (Sized_relobj::do_set_section_offset): Likewise. (Sized_relobj::Local_got_offsets): Likewise. (Sized_relobj::local_got_offsets_): Likewise. (Sized_relobj::section_offsets_): Likewise. (Sized_relobj_file): Rename Sized_relobj to this; adjust all references. (Sized_relobj_file::is_output_section_offset_invalid): Move to base class. (Sized_relobj_file::sized_relobj): New function (Sized_relobj_file::local_has_got_offset): Move to base class. (Sized_relobj_file::local_got_offset): Likewise. (Sized_relobj_file::set_local_got_offset): Likewise. (Sized_relobj_file::get_output_section_offset): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Likewise. (Sized_relobj_file::do_output_section_offset): Likewise. (Sized_relobj_file::do_set_section_offset): Likewise. (Sized_relobj_file::Local_got_offsets): Likewise. (Sized_relobj_file::local_got_offsets_): Likewise. (Sized_relobj_file::section_offsets_): Likewise. * output.cc (Output_reloc::Output_reloc): Adjust type of relobj (all constructors). (set_needs_dynsym_index): Convert relobj to derived class pointer. (Output_reloc::get_symbol_index): Likewise. (Output_reloc::local_section_offset): Likewise. (Output_reloc::get_address): Likewise. (Output_reloc::symbol_value): Likewise. (Output_data_got::reserve_slot): Move to class definition. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_slot_for_global): Remove. (Output_data_got::reserve_global): New function. * output.h (Output_reloc::Output_reloc): Adjust type of relobj (all constructors, two instantiations). (Output_reloc::get_relobj): New function (two instantiations). (Output_reloc::u1_.relobj, Output_reloc::u2_.relobj): Adjust type. (Output_data_reloc_base::add): Convert relobj to derived class pointer. (Output_data_reloc::add_global): Adjust type of relobj. (Output_data_reloc::add_global_relative): Likewise. (Output_data_reloc::add_symbolless_global_addend): Likewise. (Output_data_reloc::add_local): Likewise. (Output_data_reloc::add_local_relative): Likewise. (Output_data_reloc::add_symbolless_local_addend): Likewise. (Output_data_reloc::add_local_section): Likewise. (Output_data_reloc::add_output_section): Likewise. (Output_data_reloc::add_absolute): Likewise. (Output_data_reloc::add_target_specific): Likewise. (Output_data_got::reserve_slot): Move definition here. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_global): New function. * reloc.cc (Sized_relobj_file::do_read_relocs): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::write_sections): Likewise. (Sized_relobj_file::do_relocate_sections): Likewise. * target.h (Sized_target::reserve_local_got_entry): New function. (Sized_target::reserve_global_got_entry): New function. * x86_64.cc (Target_x86_64::reserve_local_got_entry): New function. (Target_x86_64::reserve_global_got_entry): New function. (Target_x86_64::init_got_plt_for_update): Create rela_dyn section.
2011-05-24 23:41:10 +02:00
Sized_relobj_file<size, big_endian>* object = relinfo->object;
unsigned int local_count = object->local_symbol_count();
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
Comdat_behavior comdat_behavior = CB_UNDETERMINED;
for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
{
Reltype reloc(prelocs);
section_offset_type offset =
convert_to_section_size_type(reloc.get_r_offset());
if (needs_special_offset_handling)
{
offset = output_section->output_offset(relinfo->object,
relinfo->data_shndx,
offset);
if (offset == -1)
continue;
}
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
unsigned int r_sym = Classify_reloc::get_r_sym(&reloc);
const Sized_symbol<size>* sym;
2007-05-16 19:42:48 +02:00
Symbol_value<size> symval;
const Symbol_value<size> *psymval;
bool is_defined_in_discarded_section;
unsigned int shndx;
* options.h (class General_options): Define split_stack_adjust_size parameter. * object.h (class Object): Add uses_split_stack_ and has_no_split_stack_ fields. Add uses_split_stack and has_no_split_stack accessor functions. Declare handle_split_stack_section. (class Reloc_symbol_changes): Define. (class Sized_relobj): Define Function_offsets. Declare split_stack_adjust, split_stack_adjust_reltype, and find_functions. * object.cc (Object::handle_split_stack_section): New function. (Sized_relobj::do_layout): Call handle_split_stack_section. * dynobj.cc (Sized_dynobj::do_layout): Call handle_split_stack_section. * reloc.cc (Sized_relobj::relocate_sections): Call split_stack_adjust for executable sections in split_stack objects. Pass reloc_map to relocate_section. (Sized_relobj::split_stack_adjust): New function. (Sized_relobj::split_stack_adjust_reltype): New function. (Sized_relobj::find_functions): New function. * target-reloc.h: Include "object.h". (relocate_section): Add reloc_symbol_changes parameter. Change all callers. * target.h (class Target): Add calls_non_split method. Declare do_calls_non_split virtual method. Declare match_view and set_view_to_nop. * target.cc: Include "elfcpp.h". (Target::do_calls_non_split): New function. (Target::match_view): New function. (Target::set_view_to_nop): New function. * gold.cc (queue_middle_tasks): Give an error if mixing split-stack and non-split-stack objects with -r. * i386.cc (Target_i386::relocate_section): Add reloc_symbol_changes parameter. (Target_i386::do_calls_non_split): New function. * x86_64.cc (Target_x86_64::relocate_section): Add reloc_symbol_changes parameter. (Target_x86_64::do_calls_non_split): New function. * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes parameter. * powerpc.cc (Target_powerpc::relocate_section): Add reloc_symbol_changes parameter. * sparc.cc (Target_sparc::relocate_section): Add reloc_symbol_changes parameter. * configure.ac: Call AM_CONDITIONAL for the default target. * configure: Rebuild. * testsuite/Makefile.am (TEST_AS): New variable. (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh. (check_DATA): Add split_i386 and split_x86_64 files. (SPLIT_DEFSYMS): Define. (split_i386_[1234n].o): New targets. (split_i386_[124]): New targets. (split_i386_[1234r].stdout): New targets. (split_x86_64_[1234n].o): New targets. (split_x86_64_[124]): New targets. (split_x86_64_[1234r].stdout): New targets. (MOSTLYCLEANFILES): Add new executables. * testsuite/split_i386.sh: New file. * testsuite/split_x86_64.sh: New file. * testsuite/split_i386_1.s: New file. * testsuite/split_i386_2.s: New file. * testsuite/split_i386_3.s: New file. * testsuite/split_i386_4.s: New file. * testsuite/split_i386_n.s: New file. * testsuite/split_x86_64_1.s: New file. * testsuite/split_x86_64_2.s: New file. * testsuite/split_x86_64_3.s: New file. * testsuite/split_x86_64_4.s: New file. * testsuite/split_x86_64_n.s: New file. * testsuite/testfile.cc (Target_test): Update relocation_section function. * testsuite/Makefile.in: Rebuild.
2009-10-07 00:58:27 +02:00
if (r_sym < local_count
&& (reloc_symbol_changes == NULL
|| (*reloc_symbol_changes)[i] == NULL))
{
sym = NULL;
psymval = object->local_symbol(r_sym);
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
// If the local symbol belongs to a section we are discarding,
// and that section is a debug section, try to find the
// corresponding kept section and map this symbol to its
// counterpart in the kept section. The symbol must not
2009-08-05 22:51:56 +02:00
// correspond to a section we are folding.
* layout.cc (Layout::include_section): Refactored check for debug info section. (Layout::add_comdat): Add new parameters. Change type of signature parameter. Add object and shndx to signatures table. (Layout::find_kept_object): New function. * layout.h: Include <cstring>. (Layout::is_debug_info_section): New function. (Layout::add_comdat): Add new parameters. (Layout::find_kept_object): New function. (Layout::Kept_section): New struct. (Layout::Signatures): Change type of map range. * object.cc (Relobj::output_section_address): New function. (Sized_relobj::include_section_group): Add new parameters. Change calls to Layout::add_comdat. Change to build table of kept comdat groups and table mapping discarded sections to kept sections. (Sized_relobj::include_linkonce_section): Likewise. Add new parameter. (Sized_relobj::do_layout): Change calls to include_section_group and include_linkonce_section. (Sized_relobj::do_finalize_local_symbols): Do not set local symbol value to zero when section is discarded. (Sized_relobj::map_to_kept_section): New function. * object.h (Relobj::output_section_address): New function. (Relobj::Comdat_group): New type. (Relobj::find_comdat_group): New function. (Relobj::Comdat_group_table): New type. (Relobj::Kept_comdat_section): New type. (Relobj::Kept_comdat_section_table): New type. (Relobj::add_comdat_group): New function. (Relobj::set_kept_comdat_section): New function. (Relobj::get_kept_comdat_section): New function. (Relobj::comdat_groups_): New field. (Relobj::kept_comdat_sections_): New field. (Symbol_value::input_value): Update comment. (Sized_relobj::map_to_kept_section) New function. (Sized_relobj::include_linkonce_section): Add new parameter. * target-reloc.h (Comdat_behavior): New type. (get_comdat_behavior): New function. (relocate_section): Add code to map a discarded section to the corresponding kept section when applying a relocation.
2008-05-01 03:23:21 +02:00
bool is_ordinary;
shndx = psymval->input_shndx(&is_ordinary);
is_defined_in_discarded_section =
(is_ordinary
&& shndx != elfcpp::SHN_UNDEF
&& !object->is_section_included(shndx)
&& !relinfo->symtab->is_section_folded(object, shndx));
}
else
{
* options.h (class General_options): Define split_stack_adjust_size parameter. * object.h (class Object): Add uses_split_stack_ and has_no_split_stack_ fields. Add uses_split_stack and has_no_split_stack accessor functions. Declare handle_split_stack_section. (class Reloc_symbol_changes): Define. (class Sized_relobj): Define Function_offsets. Declare split_stack_adjust, split_stack_adjust_reltype, and find_functions. * object.cc (Object::handle_split_stack_section): New function. (Sized_relobj::do_layout): Call handle_split_stack_section. * dynobj.cc (Sized_dynobj::do_layout): Call handle_split_stack_section. * reloc.cc (Sized_relobj::relocate_sections): Call split_stack_adjust for executable sections in split_stack objects. Pass reloc_map to relocate_section. (Sized_relobj::split_stack_adjust): New function. (Sized_relobj::split_stack_adjust_reltype): New function. (Sized_relobj::find_functions): New function. * target-reloc.h: Include "object.h". (relocate_section): Add reloc_symbol_changes parameter. Change all callers. * target.h (class Target): Add calls_non_split method. Declare do_calls_non_split virtual method. Declare match_view and set_view_to_nop. * target.cc: Include "elfcpp.h". (Target::do_calls_non_split): New function. (Target::match_view): New function. (Target::set_view_to_nop): New function. * gold.cc (queue_middle_tasks): Give an error if mixing split-stack and non-split-stack objects with -r. * i386.cc (Target_i386::relocate_section): Add reloc_symbol_changes parameter. (Target_i386::do_calls_non_split): New function. * x86_64.cc (Target_x86_64::relocate_section): Add reloc_symbol_changes parameter. (Target_x86_64::do_calls_non_split): New function. * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes parameter. * powerpc.cc (Target_powerpc::relocate_section): Add reloc_symbol_changes parameter. * sparc.cc (Target_sparc::relocate_section): Add reloc_symbol_changes parameter. * configure.ac: Call AM_CONDITIONAL for the default target. * configure: Rebuild. * testsuite/Makefile.am (TEST_AS): New variable. (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh. (check_DATA): Add split_i386 and split_x86_64 files. (SPLIT_DEFSYMS): Define. (split_i386_[1234n].o): New targets. (split_i386_[124]): New targets. (split_i386_[1234r].stdout): New targets. (split_x86_64_[1234n].o): New targets. (split_x86_64_[124]): New targets. (split_x86_64_[1234r].stdout): New targets. (MOSTLYCLEANFILES): Add new executables. * testsuite/split_i386.sh: New file. * testsuite/split_x86_64.sh: New file. * testsuite/split_i386_1.s: New file. * testsuite/split_i386_2.s: New file. * testsuite/split_i386_3.s: New file. * testsuite/split_i386_4.s: New file. * testsuite/split_i386_n.s: New file. * testsuite/split_x86_64_1.s: New file. * testsuite/split_x86_64_2.s: New file. * testsuite/split_x86_64_3.s: New file. * testsuite/split_x86_64_4.s: New file. * testsuite/split_x86_64_n.s: New file. * testsuite/testfile.cc (Target_test): Update relocation_section function. * testsuite/Makefile.in: Rebuild.
2009-10-07 00:58:27 +02:00
const Symbol* gsym;
if (reloc_symbol_changes != NULL
&& (*reloc_symbol_changes)[i] != NULL)
gsym = (*reloc_symbol_changes)[i];
else
{
gsym = object->global_symbol(r_sym);
gold_assert(gsym != NULL);
if (gsym->is_forwarder())
gsym = relinfo->symtab->resolve_forwards(gsym);
}
sym = static_cast<const Sized_symbol<size>*>(gsym);
* target-reloc.h (relocate_section): Check the symbol table index for -1U before setting the local symbol index. (scan_relocatable_relocs): If copying the relocation, record that the local symbol is required. * object.h (Symbol_value::is_output_symtab_index_set): New function. (Symbol_value::may_be_discarded_from_output_symtab): New function. (Symbol_value::has_output_symtab_entry): New function. (Symbol_value::needs_output_symtab_entry): Remove. (Symbol_value::output_symtab_index): Make sure the symbol index is set. (Symbol_value::set_output_symtab_index): Make sure the symbol index is not set. Make sure the new index is valid. (Symbol_value::set_must_have_output_symtab_entry): New function. (Symbol_value::has_output_dynsym_entry): New function. (Symbol_value::set_output_dynsym_index): Make sure the new index is valid. (Sized_relobj::set_must_have_output_symtab_entry): New function. * object.cc (Sized_relobj::do_count_local_symbols): Only discard a local symbol if permitted. (Sized_relobj::do_finalize_local_symbols): Call is_output_symtab_index_set rather than needs_output_symtab_entry. (Sized_relobj::write_local_symbols): Call has_output_symtab_entry rather than needs_output_symtab_entry. Call has_output_dynsym_entry rather than needs_output_dynsym_entry. * arm.cc (Arm_relobj::update_output_local_symbol_count): Call is_output_symtab_index_set rather than needs_output_symtab_entry. * testsuite/discard_locals_relocatable_test.c: New file. * testsuite/discard_locals_test.sh: Test -r. * testsuite/Makefile.am (check_DATA): Add discard_locals_relocatable_test1.syms, discard_local_relocatable_test2.syms. (MOSTLYCLEANFILES): Likewise. Also add discard_locals_relocatable_test1.lout and discard_locals_relocatable_test2.out. (discard_locals_relocatable_test1.syms): New target. (discard_locals_relocatable_test.o): New target. (discard_locals_relocatable_test1.out): New target. (discard_locals_relocatable_test2.syms): New target. (discard_locals_relocatable_test2.out): New target. (various): Add missing ../ld-new dependencies. * testsuite/Makefile.in: Rebuild.
2010-03-03 20:31:54 +01:00
if (sym->has_symtab_index() && sym->symtab_index() != -1U)
2007-05-16 19:42:48 +02:00
symval.set_output_symtab_index(sym->symtab_index());
else
symval.set_no_output_symtab_entry();
symval.set_output_value(sym->value());
PR 10893 * i386.cc (class Output_data_plt_i386): Update declarations. Define Global_ifunc and Local_ifunc types. Add global_ifuncs_ and local_ifuncs_ fields. (Target_i386::do_plt_section_for_global): New function. (Target_i386::do_plt_section_for_local): New function. (Output_data_plt_i386::Output_data_plt_i386): Add symtab parameter; change all callers. Initialize global_ifuncs_ and local_ifuncs_. If doing a static link define __rel_iplt_start and __rel_iplt_end. (Output_data_plt_i386::add_entry): Handle IFUNC symbols. (Output_data_plt_i386::add_local_ifunc_entry): New function. (Output_data_plt_i386::do_write): Fix GOT entries for IFUNC symbols. (Target_i386::make_plt_section): New function, broken out of make_plt_entry. Set sh_info field of .rel.plt to point to .plt. (Target_i386::make_plt_entry): Call make_plt_section. (Target_i386::make_local_ifunc_plt_entry): New function. (Target_i386::Scan::reloc_needs_iplt_for_ifunc): New function. (Target_i386::Scan::local): Handle IFUNC symbols. Add R_386_IRELATIVE to switch. (Target_i386::Scan::global): Likewise. (Target_i386::Relocate::relocate): Likewise. (Target_i386::Relocatable_size_for_reloc): Add R_386_IRELATIVE to switch. * x86_64.cc (class Output_data_plt_x86_64): Update declarations. (Target_x86_64::do_plt_section_for_global): New function. (Target_x86_64::do_plt_section_for_local): New function. (Output_data_plt_x86_64::Output_data_plt_x86_64): Add symtab parameter; change all callers. If doing a static link define __rela_iplt_start and __rela_iplt_end. (Output_data_plt_x86_64::add_entry): Handle IFUNC symbols. (Output_data_plt_x86_64::add_local_ifunc_entry): New function. (Target_x86_64::make_plt_section): Set sh_info field of .rel.plt to point to .plt. (Target_x86_64::make_local_ifunc_plt_entry): New function. (Target_x86_64::Scan::check_non_pic): Add R_X86_64_IRELATIVE to switch. (Target_x86_64::Scan::reloc_needs_iplt_for_ifunc): New function. (Target_x86_64::Scan::local): Handle IFUNC symbols. Add R_X86_64_IRELATIVE to switch. (Target_x86_64::Scan::global): Likewise. (Target_x86_64::Relocate::relocate): Likewise. (Target_x86_64::Relocatable_size_for_reloc): Add R_X86_64_IRELATIVE to switch. * target.h (class Target): Add plt_section_for_global and plt_section_for_local functions. Add do_plt_section_for_global and do_plt_section_for_local virtual functions. * symtab.h (Symbol::needs_plt_entry): Handle IFUNC symbol. Add clarifying comments. (Symbol::use_plt_offset): Handle IFUNC symbol. * object.cc (Sized_relobj::Sized_relobj): Initialize local_plt_offsets_. (Sized_relobj::local_has_plt_offset): New function. (Sized_relobj::local_plt_offset): New function. (Sized_relobj::set_local_plt_offset): New function. (Sized_relobj::do_count): Handle IFUNC symbol. * object.h (class Symbol_value): Add is_ifunc_symbol_ field. Take a bit away from input_shndx_ field. Add set_is_func_symbol and is_ifunc_symbol functions. (class Sized_relobj): Update declarations. Remove Tls_got_entry and Local_tls_got_offsets. Define Local_plt_offsets. Add local_plt_offsets_ field. (Sized_relobj::clear_local_symbols): Clear local_plt_offsets_. * output.h (class Output_section_data): Add non-const output_section function. (class Output_data_got): Update declarations. (class Output_data_got::Got_entry): Add use_plt_offset_ field. Add use_plt_offset parameter to global and local constructors. Change all callers. Change local_sym_index_ field to 31 bits. Change GSYM_CODE and CONSTANT_CODE accordingly. * output.cc (Output_data_reloc_base::do_adjust_output_section): If doing a static link don't set sh_link field. (Output_data_got::Got_entry::write): Use PLT offset if appropriate. (Output_data_got::add_global_plt): New function. (Output_data_got::add_local_plt): New function. * target-reloc.h (relocate_section): Handle IFUNC symbol. * defstd.cc (in_section): Remove entries for __rel_iplt_start, __rel_iplt_end, __rela_iplt_start, and __rela_iplt_end. * configure.ac: Set IFUNC automake conditional for glibc >= 2.11. * testsuite/Makefile.am: Add a bunch of IFUNC tests, all within IFUNC conditional. * testsuite/ifunc-sel.h: New file. * testsuite/ifuncmain1.c: New file. * testsuite/ifuncmain1vis.c: New file. * testsuite/ifuncmod1.c: New file. * testsuite/ifuncdep2.c: New file. * testsuite/ifuncmain2.c: New file. * testsuite/ifuncmain3.c: New file. * testsuite/ifuncmod3.c: New file. * testsuite/ifuncmain4.c: New file. * testsuite/ifuncmain5.c: New file. * testsuite/ifuncmod5.c: New file. * testsuite/ifuncmain6pie.c: New file. * testsuite/ifuncmod6.c: New file. * testsuite/ifuncmain7.c: New file. * configure, testsuite/Makefile.in: Rebuild.
2010-08-20 00:50:16 +02:00
if (gsym->type() == elfcpp::STT_TLS)
symval.set_is_tls_symbol();
else if (gsym->type() == elfcpp::STT_GNU_IFUNC)
symval.set_is_ifunc_symbol();
2007-05-16 19:42:48 +02:00
psymval = &symval;
is_defined_in_discarded_section =
(gsym->is_defined_in_discarded_section()
&& gsym->is_undefined());
shndx = 0;
}
Symbol_value<size> symval2;
if (is_defined_in_discarded_section)
{
if (comdat_behavior == CB_UNDETERMINED)
{
std::string name = object->section_name(relinfo->data_shndx);
comdat_behavior = relocate_comdat_behavior.get(name.c_str());
}
if (comdat_behavior == CB_PRETEND)
{
// FIXME: This case does not work for global symbols.
// We have no place to store the original section index.
// Fortunately this does not matter for comdat sections,
// only for sections explicitly discarded by a linker
// script.
bool found;
typename elfcpp::Elf_types<size>::Elf_Addr value =
object->map_to_kept_section(shndx, &found);
if (found)
symval2.set_output_value(value + psymval->input_value());
else
symval2.set_output_value(0);
}
else
{
if (comdat_behavior == CB_WARNING)
gold_warning_at_location(relinfo, i, offset,
_("relocation refers to discarded "
"section"));
symval2.set_output_value(0);
}
symval2.set_no_output_symtab_entry();
psymval = &symval2;
}
// If OFFSET is out of range, still let the target decide to
// ignore the relocation. Pass in NULL as the VIEW argument so
// that it can return quickly without trashing an invalid memory
// address.
unsigned char *v = view + offset;
if (offset < 0 || static_cast<section_size_type>(offset) >= view_size)
v = NULL;
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
if (!relocate.relocate(relinfo, Classify_reloc::sh_type, target,
output_section, i, prelocs, sym, psymval,
[GOLD] Relocate::relocate() params Some linker code editing needs to change multiple insns. In some cases multiple relocations are involved and it is not sufficient to make the changes independently as relocations are processed, because doing so might lead to a partial edit. So in order to safely edit we need all the relocations available in relocate(). Also, to emit edited relocs corresponding to the edited code sequence we need some way to pass information from relocate() to relocate_relocs(), particularly if the edit depends on insns. We can't modify input relocs in relocate() as they are mmapped PROT_READ, nor it is particularly clean to write relocs to the output at that stage. So add a Relocatable_relocs* field to relinfo to mark edited relocs. Given that relocate is passed the raw reloc pointer, it makes sense to remove the rel/rela parameter and r_type too. However, that means the mips relocate() needs to know whether SHT_REL or SHT_RELA relocs are being processed. So add a rel_type for mips, which also has the benefit of removing relocate() overloading there. This patch adds the infrastructure without making use of it. Note that relinfo->rr will be NULL if not outputting relocations. * object.h (struct Relocate_info): Add "rr". * reloc.h (Relocatable_relocs::set_strategy): New accessor. * reloc.cc (Sized_relobj_file::do_relocate_sections): Init relinfo.rr for relocate_section and relocate_relocs. * powerpc.cc (relocate): Add rel_type and preloc parameters. Delete rela and r_type params, instead recalculate these from preloc. (relocate_relocs): Delete Relocatable_relocs* param, instead use relinfo->rr. * aarch64.cc: Likewise. * arm.cc: Likewise. * i386.cc: Likewise. * mips.cc: Likewise. * s390.cc: Likewise. * sparc.cc: Likewise. * target.h: Likewise. * tilegx.cc: Likewise. * x86_64.cc: Likewise. * testsuite/testfile.cc: Likewise. * target-reloc.h (relocate_section): Adjust to suit. (apply_relocation, relocate_relocs): Likewise.
2015-12-09 00:48:30 +01:00
v, view_address + offset, view_size))
continue;
if (v == NULL)
{
gold_error_at_location(relinfo, i, offset,
_("reloc has bad offset %zu"),
static_cast<size_t>(offset));
continue;
}
if (issue_undefined_symbol_error(sym))
gold_undefined_symbol_at_location(sym, relinfo, i, offset);
else if (sym != NULL
&& sym->visibility() != elfcpp::STV_DEFAULT
&& (sym->is_strong_undefined() || sym->is_from_dynobj()))
visibility_error(sym);
if (sym != NULL && sym->has_warning())
relinfo->symtab->issue_warning(sym, relinfo, i, offset);
}
}
// Apply an incremental relocation.
template<int size, bool big_endian, typename Target_type,
typename Relocate>
void
apply_relocation(const Relocate_info<size, big_endian>* relinfo,
Target_type* target,
typename elfcpp::Elf_types<size>::Elf_Addr r_offset,
unsigned int r_type,
typename elfcpp::Elf_types<size>::Elf_Swxword r_addend,
const Symbol* gsym,
unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr address,
section_size_type view_size)
{
// Construct the ELF relocation in a temporary buffer.
const int reloc_size = elfcpp::Elf_sizes<size>::rela_size;
unsigned char relbuf[reloc_size];
elfcpp::Rela_write<size, big_endian> orel(relbuf);
orel.put_r_offset(r_offset);
orel.put_r_info(elfcpp::elf_r_info<size>(0, r_type));
orel.put_r_addend(r_addend);
// Setup a Symbol_value for the global symbol.
const Sized_symbol<size>* sym = static_cast<const Sized_symbol<size>*>(gsym);
Symbol_value<size> symval;
gold_assert(sym->has_symtab_index() && sym->symtab_index() != -1U);
symval.set_output_symtab_index(sym->symtab_index());
symval.set_output_value(sym->value());
if (gsym->type() == elfcpp::STT_TLS)
symval.set_is_tls_symbol();
else if (gsym->type() == elfcpp::STT_GNU_IFUNC)
symval.set_is_ifunc_symbol();
Relocate relocate;
[GOLD] Relocate::relocate() params Some linker code editing needs to change multiple insns. In some cases multiple relocations are involved and it is not sufficient to make the changes independently as relocations are processed, because doing so might lead to a partial edit. So in order to safely edit we need all the relocations available in relocate(). Also, to emit edited relocs corresponding to the edited code sequence we need some way to pass information from relocate() to relocate_relocs(), particularly if the edit depends on insns. We can't modify input relocs in relocate() as they are mmapped PROT_READ, nor it is particularly clean to write relocs to the output at that stage. So add a Relocatable_relocs* field to relinfo to mark edited relocs. Given that relocate is passed the raw reloc pointer, it makes sense to remove the rel/rela parameter and r_type too. However, that means the mips relocate() needs to know whether SHT_REL or SHT_RELA relocs are being processed. So add a rel_type for mips, which also has the benefit of removing relocate() overloading there. This patch adds the infrastructure without making use of it. Note that relinfo->rr will be NULL if not outputting relocations. * object.h (struct Relocate_info): Add "rr". * reloc.h (Relocatable_relocs::set_strategy): New accessor. * reloc.cc (Sized_relobj_file::do_relocate_sections): Init relinfo.rr for relocate_section and relocate_relocs. * powerpc.cc (relocate): Add rel_type and preloc parameters. Delete rela and r_type params, instead recalculate these from preloc. (relocate_relocs): Delete Relocatable_relocs* param, instead use relinfo->rr. * aarch64.cc: Likewise. * arm.cc: Likewise. * i386.cc: Likewise. * mips.cc: Likewise. * s390.cc: Likewise. * sparc.cc: Likewise. * target.h: Likewise. * tilegx.cc: Likewise. * x86_64.cc: Likewise. * testsuite/testfile.cc: Likewise. * target-reloc.h (relocate_section): Adjust to suit. (apply_relocation, relocate_relocs): Likewise.
2015-12-09 00:48:30 +01:00
relocate.relocate(relinfo, elfcpp::SHT_RELA, target, NULL,
-1U, relbuf, sym, &symval,
view + r_offset, address + r_offset, view_size);
}
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
// A class for inquiring about properties of a relocation,
// used while scanning relocs during a relocatable link and
// garbage collection. This class may be used as the default
// for SHT_RELA targets, but SHT_REL targets must implement
// a derived class that overrides get_size_for_reloc.
// The MIPS-64 target also needs to override the methods
// for accessing the r_sym and r_type fields of a relocation,
// due to its non-standard use of the r_info field.
template<int sh_type_, int size, bool big_endian>
class Default_classify_reloc
{
public:
typedef typename Reloc_types<sh_type_, size, big_endian>::Reloc
Reltype;
typedef typename Reloc_types<sh_type_, size, big_endian>::Reloc_write
Reltype_write;
static const int reloc_size =
Reloc_types<sh_type_, size, big_endian>::reloc_size;
static const int sh_type = sh_type_;
// Return the symbol referred to by the relocation.
static inline unsigned int
get_r_sym(const Reltype* reloc)
{ return elfcpp::elf_r_sym<size>(reloc->get_r_info()); }
// Return the type of the relocation.
static inline unsigned int
get_r_type(const Reltype* reloc)
{ return elfcpp::elf_r_type<size>(reloc->get_r_info()); }
// Return the explicit addend of the relocation (return 0 for SHT_REL).
static inline typename elfcpp::Elf_types<size>::Elf_Swxword
get_r_addend(const Reltype* reloc)
{ return Reloc_types<sh_type_, size, big_endian>::get_reloc_addend(reloc); }
// Write the r_info field to a new reloc, using the r_info field from
// the original reloc, replacing the r_sym field with R_SYM.
static inline void
put_r_info(Reltype_write* new_reloc, Reltype* reloc, unsigned int r_sym)
{
unsigned int r_type = elfcpp::elf_r_type<size>(reloc->get_r_info());
new_reloc->put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type));
}
// Write the r_addend field to a new reloc.
static inline void
put_r_addend(Reltype_write* to,
typename elfcpp::Elf_types<size>::Elf_Swxword addend)
{ Reloc_types<sh_type_, size, big_endian>::set_reloc_addend(to, addend); }
// Return the size of the addend of the relocation (only used for SHT_REL).
static unsigned int
get_size_for_reloc(unsigned int, Relobj*)
{
gold_unreachable();
return 0;
}
};
2008-02-06 09:13:50 +01:00
// This class may be used as a typical class for the
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
// Scan_relocatable_reloc parameter to scan_relocatable_relocs.
// This class is intended to capture the most typical target behaviour,
// while still permitting targets to define their own independent class
// for Scan_relocatable_reloc.
template<typename Classify_reloc>
2008-02-06 09:13:50 +01:00
class Default_scan_relocatable_relocs
{
public:
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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typedef typename Classify_reloc::Reltype Reltype;
static const int reloc_size = Classify_reloc::reloc_size;
static const int sh_type = Classify_reloc::sh_type;
// Return the symbol referred to by the relocation.
static inline unsigned int
get_r_sym(const Reltype* reloc)
{ return Classify_reloc::get_r_sym(reloc); }
// Return the type of the relocation.
static inline unsigned int
get_r_type(const Reltype* reloc)
{ return Classify_reloc::get_r_type(reloc); }
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// Return the strategy to use for a local symbol which is not a
// section symbol, given the relocation type.
inline Relocatable_relocs::Reloc_strategy
local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym)
{
// We assume that relocation type 0 is NONE. Targets which are
// different must override.
if (r_type == 0 && r_sym == 0)
return Relocatable_relocs::RELOC_DISCARD;
return Relocatable_relocs::RELOC_COPY;
}
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// Return the strategy to use for a local symbol which is a section
// symbol, given the relocation type.
inline Relocatable_relocs::Reloc_strategy
local_section_strategy(unsigned int r_type, Relobj* object)
{
if (sh_type == elfcpp::SHT_RELA)
return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
else
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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switch (Classify_reloc::get_size_for_reloc(r_type, object))
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{
case 0:
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return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0;
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case 1:
return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1;
case 2:
return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2;
case 4:
return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4;
case 8:
return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8;
default:
gold_unreachable();
}
}
}
// Return the strategy to use for a global symbol, given the
// relocation type, the object, and the symbol index.
inline Relocatable_relocs::Reloc_strategy
global_strategy(unsigned int, Relobj*, unsigned int)
{ return Relocatable_relocs::RELOC_COPY; }
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};
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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// This is a strategy class used with scan_relocatable_relocs
// and --emit-relocs.
template<typename Classify_reloc>
class Default_emit_relocs_strategy
{
public:
typedef typename Classify_reloc::Reltype Reltype;
static const int reloc_size = Classify_reloc::reloc_size;
static const int sh_type = Classify_reloc::sh_type;
// Return the symbol referred to by the relocation.
static inline unsigned int
get_r_sym(const Reltype* reloc)
{ return Classify_reloc::get_r_sym(reloc); }
// Return the type of the relocation.
static inline unsigned int
get_r_type(const Reltype* reloc)
{ return Classify_reloc::get_r_type(reloc); }
// A local non-section symbol.
inline Relocatable_relocs::Reloc_strategy
local_non_section_strategy(unsigned int, Relobj*, unsigned int)
{ 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; }
};
2008-02-06 09:13:50 +01:00
// Scan relocs during a relocatable link. This is a default
// definition which should work for most targets.
// Scan_relocatable_reloc must name a class type which provides three
// functions which return a Relocatable_relocs::Reloc_strategy code:
// global_strategy, local_non_section_strategy, and
// local_section_strategy. Most targets should be able to use
// Default_scan_relocatable_relocs as this class.
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
template<int size, bool big_endian, typename Scan_relocatable_reloc>
2008-02-06 09:13:50 +01:00
void
scan_relocatable_relocs(
Symbol_table*,
Layout*,
* incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc info; adjust display of GOT entries. * incremental.cc (Sized_incremental_binary::setup_readers): Allocate vector of input objects; remove file_status_. (Sized_incremental_binary::do_reserve_layout): Remove file_status_. (Sized_incremental_binary::do_process_got_plt): Adjust calls to got_plt reader; call target hooks to reserve GOT entries. (Output_section_incremental_inputs::set_final_data_size): Adjust size of input file info header and GOT info entry. (Output_section_incremental_inputs::write_info_blocks): Write dynamic relocation info. (Got_plt_view_info::got_descriptor): Remove. (Got_plt_view_info::sym_index): New data member. (Got_plt_view_info::input_index): New data member. (Local_got_offset_visitor::visit): Write input file index. (Global_got_offset_visitor::visit): Write 0 for input file index. (Global_symbol_visitor_got_plt::operator()): Replace got_descriptor with sym_index and input_index. (Output_section_incremental_inputs::write_got_plt): Adjust size of incremental info GOT entry; replace got_descriptor with input_index. (Sized_relobj_incr::Sized_relobj_incr): Adjust initializers; record map from input file index to object. (Sized_relobj_incr::do_layout): Replace direct data member reference with accessor function. (Sized_relobj_incr::do_for_all_local_got_entries): Move to base class. * incremental.h (Incremental_input_entry_reader::get_symbol_offset): Adjust size of input file info header. (Incremental_input_entry_reader::get_first_dyn_reloc): New function. (Incremental_input_entry_reader::get_dyn_reloc_count): New function. (Incremental_input_entry_reader::get_input_section): Adjust size of input file info header. (Incremental_got_plt_reader::Incremental_got_plt_reader): Adjust size of incremental info GOT entry. (Incremental_got_plt_reader::get_got_desc): Remove. (Incremental_got_plt_reader::get_got_symndx): New function. (Incremental_got_plt_reader::get_got_input_index): New function. (Sized_incremental_binary::Sized_incremental_binary): Remove file_status_; add input_objects_. (Sized_incremental_binary::~Sized_incremental_binary): Remove. (Sized_incremental_binary::set_file_is_unchanged): Remove. (Sized_incremental_binary::file_is_unchanged): Remove. (Sized_incremental_binary::set_input_object): New function. (Sized_incremental_binary::input_object): New function. (Sized_incremental_binary::file_status_): Remove. (Sized_incremental_binary::input_objects_): New data member. (Sized_relobj_incr): Rename Sized_incr_relobj to this; adjust all references. (Sized_relobj_incr::invalid_address): Move to base class. (Sized_relobj_incr::is_output_section_offset_invalid): Move to base class. (Sized_relobj_incr::do_output_section_offset): Likewise. (Sized_relobj_incr::do_for_all_local_got_entries): Likewise. (Sized_relobj_incr::section_offsets_): Likewise. * object.cc (Sized_relobj::do_for_all_local_got_entries): New function. (Sized_relobj_file::Sized_relobj_file): Remove local_got_offsets_. (Sized_relobj_file::layout_section): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_layout): Likewise. (Sized_relobj_file::do_layout_deferred_sections): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Move to base class. (Sized_relobj_file::compute_final_local_value): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_finalize_local_symbols): Likewise. * object.h (Relobj::Relobj): Initialize new data members. (Relobj::add_dyn_reloc): New function. (Relobj::first_dyn_reloc): New function. (Relobj::dyn_reloc_count): New function. (Relobj::first_dyn_reloc_): New data member. (Relobj::dyn_reloc_count_): New data member. (Sized_relobj): Rename Sized_relobj_base to this; adjust all references. (Sized_relobj::Address): New typedef. (Sized_relobj::invalid_address): Move here from child class. (Sized_relobj::Sized_relobj): Initialize new data members. (Sized_relobj::sized_relobj): New function. (Sized_relobj::is_output_section_offset_invalid): Move here from child class. (Sized_relobj::get_output_section_offset): Likewise. (Sized_relobj::local_has_got_offset): Likewise. (Sized_relobj::local_got_offset): Likewise. (Sized_relobj::set_local_got_offset): Likewise. (Sized_relobj::do_for_all_local_got_entries): Likewise. (Sized_relobj::clear_got_offsets): New function. (Sized_relobj::section_offsets): Move here from child class. (Sized_relobj::do_output_section_offset): Likewise. (Sized_relobj::do_set_section_offset): Likewise. (Sized_relobj::Local_got_offsets): Likewise. (Sized_relobj::local_got_offsets_): Likewise. (Sized_relobj::section_offsets_): Likewise. (Sized_relobj_file): Rename Sized_relobj to this; adjust all references. (Sized_relobj_file::is_output_section_offset_invalid): Move to base class. (Sized_relobj_file::sized_relobj): New function (Sized_relobj_file::local_has_got_offset): Move to base class. (Sized_relobj_file::local_got_offset): Likewise. (Sized_relobj_file::set_local_got_offset): Likewise. (Sized_relobj_file::get_output_section_offset): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Likewise. (Sized_relobj_file::do_output_section_offset): Likewise. (Sized_relobj_file::do_set_section_offset): Likewise. (Sized_relobj_file::Local_got_offsets): Likewise. (Sized_relobj_file::local_got_offsets_): Likewise. (Sized_relobj_file::section_offsets_): Likewise. * output.cc (Output_reloc::Output_reloc): Adjust type of relobj (all constructors). (set_needs_dynsym_index): Convert relobj to derived class pointer. (Output_reloc::get_symbol_index): Likewise. (Output_reloc::local_section_offset): Likewise. (Output_reloc::get_address): Likewise. (Output_reloc::symbol_value): Likewise. (Output_data_got::reserve_slot): Move to class definition. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_slot_for_global): Remove. (Output_data_got::reserve_global): New function. * output.h (Output_reloc::Output_reloc): Adjust type of relobj (all constructors, two instantiations). (Output_reloc::get_relobj): New function (two instantiations). (Output_reloc::u1_.relobj, Output_reloc::u2_.relobj): Adjust type. (Output_data_reloc_base::add): Convert relobj to derived class pointer. (Output_data_reloc::add_global): Adjust type of relobj. (Output_data_reloc::add_global_relative): Likewise. (Output_data_reloc::add_symbolless_global_addend): Likewise. (Output_data_reloc::add_local): Likewise. (Output_data_reloc::add_local_relative): Likewise. (Output_data_reloc::add_symbolless_local_addend): Likewise. (Output_data_reloc::add_local_section): Likewise. (Output_data_reloc::add_output_section): Likewise. (Output_data_reloc::add_absolute): Likewise. (Output_data_reloc::add_target_specific): Likewise. (Output_data_got::reserve_slot): Move definition here. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_global): New function. * reloc.cc (Sized_relobj_file::do_read_relocs): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::write_sections): Likewise. (Sized_relobj_file::do_relocate_sections): Likewise. * target.h (Sized_target::reserve_local_got_entry): New function. (Sized_target::reserve_global_got_entry): New function. * x86_64.cc (Target_x86_64::reserve_local_got_entry): New function. (Target_x86_64::reserve_global_got_entry): New function. (Target_x86_64::init_got_plt_for_update): Create rela_dyn section.
2011-05-24 23:41:10 +02:00
Sized_relobj_file<size, big_endian>* object,
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unsigned int data_shndx,
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
bool needs_special_offset_handling,
size_t local_symbol_count,
const unsigned char* plocal_syms,
Relocatable_relocs* rr)
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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typedef typename Scan_relocatable_reloc::Reltype Reltype;
const int reloc_size = Scan_relocatable_reloc::reloc_size;
2008-02-06 09:13:50 +01:00
const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
Scan_relocatable_reloc scan;
for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
{
Reltype reloc(prelocs);
Relocatable_relocs::Reloc_strategy strategy;
if (needs_special_offset_handling
&& !output_section->is_input_address_mapped(object, data_shndx,
reloc.get_r_offset()))
strategy = Relocatable_relocs::RELOC_DISCARD;
else
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
const unsigned int r_sym = Scan_relocatable_reloc::get_r_sym(&reloc);
const unsigned int r_type =
Scan_relocatable_reloc::get_r_type(&reloc);
2008-02-06 09:13:50 +01:00
if (r_sym >= local_symbol_count)
strategy = scan.global_strategy(r_type, object, r_sym);
else
{
gold_assert(plocal_syms != NULL);
typename elfcpp::Sym<size, big_endian> lsym(plocal_syms
+ r_sym * sym_size);
* object.cc (Xindex::initialize_symtab_xindex): New function. (Xindex::read_symtab_xindex): New function. (Xindex::sym_xindex_to_shndx): New function. (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if available. (Sized_relobj::do_initialize_xindex): New function. (Sized_relobj::do_read_symbols): Adjust section links. (Sized_relobj::symbol_section_and_value): Add is_ordinary parameter. Change all callers. (Sized_relobj::include_section_group): Adjust section links and symbol section indexes. (Sized_relobj::do_layout): Adjust section links. (Sized_relobj::do_count_local_symbols): Adjust section links and symbol section indexes. (Sized_relobj::do_finalize_local_symbols): Distinguish between ordinary and special symbols. (Sized_relobj::write_local_symbols): Add symtab_xindex and dynsym_xindex parameters. Change all callers. Adjust section links. Use SHN_XINDEX when needed. (Sized_relobj::get_symbol_location_info): Adjust section links. Don't get fooled by special symbols. * object.h (class Xindex): Define. (class Object): Add xindex_ parameter. Declare virtual functoin do_initialize_xindex. (Object::adjust_sym_shndx): New function. (Object::set_xindex): New protected function. (class Symbol_value): Add is_ordinary_shndx_ field. (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_. (Symbol_value::value): Assert ordinary section. (Symbol_value::initialize_input_to_output_map): Likewise. (Symbol_value::set_input_shndx): Add is_ordinary parameter. Change all callers. (Symbol_value::input_shndx): Add is_ordinary parameter. Change all callers. (class Sized_relobj): Update declarations. (Sized_relobj::local_symbol_input_shndx): Add is_ordinary parameter. Change all callers. (Sized_relobj::adjust_shndx): New function. * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_ field. (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx parameter. Change all callers. Pick up SHT_DYNSYM_SHNDX section for SHT_DYNSYM section if available. Set dynsym_shndx_ field. (Sized_dynobj::read_dynsym_section): Adjust section links. (Sized_dynobj::read_dynamic): Likewise. (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field. Adjust section links. (Sized_dynobj::do_initialize_xindex): New function. * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field. Declare do_initialize_xindex. (Sized_dynobj::adjust_shndx): New function. * layout.cc (Layout::Layout): Initialize symtab_xindex_ and dynsym_xindex_ fields. (Layout::finalize): Add a call to set_section_indexes before creating the symtab sections. (Layout::set_section_indexes): Don't do anything if the section already has a section index. (Layout::create_symtab_sections): Add shnum parameter. Change caller. Create .symtab_shndx section if needed. (Layout::create_shdrs): Add shstrtab_section parameter. Change caller. (Layout::allocated_output_section_count): New function. (Layout::create_dynamic_symtab): Create .dynsym_shndx section if needed. * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_ fields. Update declarations. (Layout::symtab_xindex): New function. (Layout::dynsym_xindex): New function. (class Write_symbols_task): Add layout_ field. (Write_symbols_task::Write_symbols_task): Add layout parameter. Change caller. * output.cc (Output_section_headers::Output_section_headers): Add shstrtab_section parameter. Change all callers. (Output_section_headers::do_sized_write): Store overflow values for section count and section string table section index in section header zero. (Output_file_header::do_sized_write): Check for overflow of section count and section string table section index. (Output_symtab_xindex::do_write): New function. (Output_symtab_xindex::endian_do_write): New function. * output.h (class Output_section_headers): Add shstrtab_section_. Update declarations. (class Output_symtab_xindex): Define. (Output_section::has_out_shndx): New function. * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_ field. (Symbol::init_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::init): Likewise. (Symbol::output_section): Check for ordinary symbol. (Symbol_table::add_from_object): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. (Symbol_table::add_from_relobj): Add symndx_offset parameter. Change all callers. Simplify handling of symbols from sections not included in the link. (Symbol_table::add_from_dynobj): Handle ordinary symbol distinction. (Weak_alias_sorter::operator()): Assert that symbols are ordinary. (Symbol_table::sized_finalize_symbol): Handle ordinary symbol distinction. (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex parameters. Change all callers. (Symbol_table::sized_write_globals): Likewise. Handle ordinary symbol distinction. Use SHN_XINDEX when needed. (Symbol_table::write_section_symbol): Add symtab_xindex parameter. Change all callers. (Symbol_table::sized_write_section_symbol): Likewise. Use SHN_XINDEX when needed. * symtab.h (class Symbol): Add is_ordinary_shndx_ field. Update declarations. (Symbol::shndx): Add is_ordinary parameter. Change all callers. (Symbol::is_defined): Check is_ordinary. (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise. (Symbol::is_absolute, Symbol::is_common): Likewise. (class Sized_symbol): Update declarations. (class Symbol_table): Update declarations. * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::override): Likewise. (Symbol_table::override): Likewise. (symbol_to_bits): Add is_ordinary parameter. Change all callers. (Symbol_table::resolve): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol to be in an ordinary section. * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add object and is_ordinary parameters. Change all callers. (Sized_dwarf_line_info::read_relocs): Add object parameter. Change all callers. Don't add undefined or non-ordinary symbols to reloc_map_. (Sized_dwarf_line_info::read_line_mappings): Add object parameter. Change all callers. * dwarf_reader.h (class Sized_dwarf_line_info): Update declarations. * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol. * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links. (Sized_relobj::relocate_sections): Likewise. * target-reloc.h (scan_relocs): Adjust section symbol index. (scan_relocatable_relocs): Likewise. * i386.cc (Scan::local): Check for ordinary symbols. * sparc.cc (Scan::local): Likewise. * x86_64.cc (Scan::local): Likewise. * testsuite/binary_unittest.cc (Sized_binary_test): Update calls to symbol_section_and_value. * testsuite/many_sections_test.cc: New file. * testsuite/Makefile.am (BUILT_SOURCES): Define. (check_PROGRAMS): Add many_sections_test. (many_sections_test_SOURCES): Define. (many_sections_test_DEPENDENCIES): Define. (many_sections_test_LDFLAGS): Define. (BUILT_SOURCES): Add many_sections_define.h. (many_sections_define.h): New target. (BUILT_SOURCES): Add many_sections_check.h. (many_sections_check.h): New target. (check_PROGRAMS): Add many_sections_r_test. (many_sections_r_test_SOURCES): Define. (many_sections_r_test_DEPENDENCIES): Define. (many_sections_r_test_LDFLAGS): Define. (many_sections_r_test_LDADD): Define. (many_sections_r_test.o): New target. * testsuite/Makefile.in: Rebuild.
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unsigned int shndx = lsym.get_st_shndx();
bool is_ordinary;
shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
if (is_ordinary
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&& shndx != elfcpp::SHN_UNDEF
* object.cc (Xindex::initialize_symtab_xindex): New function. (Xindex::read_symtab_xindex): New function. (Xindex::sym_xindex_to_shndx): New function. (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if available. (Sized_relobj::do_initialize_xindex): New function. (Sized_relobj::do_read_symbols): Adjust section links. (Sized_relobj::symbol_section_and_value): Add is_ordinary parameter. Change all callers. (Sized_relobj::include_section_group): Adjust section links and symbol section indexes. (Sized_relobj::do_layout): Adjust section links. (Sized_relobj::do_count_local_symbols): Adjust section links and symbol section indexes. (Sized_relobj::do_finalize_local_symbols): Distinguish between ordinary and special symbols. (Sized_relobj::write_local_symbols): Add symtab_xindex and dynsym_xindex parameters. Change all callers. Adjust section links. Use SHN_XINDEX when needed. (Sized_relobj::get_symbol_location_info): Adjust section links. Don't get fooled by special symbols. * object.h (class Xindex): Define. (class Object): Add xindex_ parameter. Declare virtual functoin do_initialize_xindex. (Object::adjust_sym_shndx): New function. (Object::set_xindex): New protected function. (class Symbol_value): Add is_ordinary_shndx_ field. (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_. (Symbol_value::value): Assert ordinary section. (Symbol_value::initialize_input_to_output_map): Likewise. (Symbol_value::set_input_shndx): Add is_ordinary parameter. Change all callers. (Symbol_value::input_shndx): Add is_ordinary parameter. Change all callers. (class Sized_relobj): Update declarations. (Sized_relobj::local_symbol_input_shndx): Add is_ordinary parameter. Change all callers. (Sized_relobj::adjust_shndx): New function. * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_ field. (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx parameter. Change all callers. Pick up SHT_DYNSYM_SHNDX section for SHT_DYNSYM section if available. Set dynsym_shndx_ field. (Sized_dynobj::read_dynsym_section): Adjust section links. (Sized_dynobj::read_dynamic): Likewise. (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field. Adjust section links. (Sized_dynobj::do_initialize_xindex): New function. * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field. Declare do_initialize_xindex. (Sized_dynobj::adjust_shndx): New function. * layout.cc (Layout::Layout): Initialize symtab_xindex_ and dynsym_xindex_ fields. (Layout::finalize): Add a call to set_section_indexes before creating the symtab sections. (Layout::set_section_indexes): Don't do anything if the section already has a section index. (Layout::create_symtab_sections): Add shnum parameter. Change caller. Create .symtab_shndx section if needed. (Layout::create_shdrs): Add shstrtab_section parameter. Change caller. (Layout::allocated_output_section_count): New function. (Layout::create_dynamic_symtab): Create .dynsym_shndx section if needed. * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_ fields. Update declarations. (Layout::symtab_xindex): New function. (Layout::dynsym_xindex): New function. (class Write_symbols_task): Add layout_ field. (Write_symbols_task::Write_symbols_task): Add layout parameter. Change caller. * output.cc (Output_section_headers::Output_section_headers): Add shstrtab_section parameter. Change all callers. (Output_section_headers::do_sized_write): Store overflow values for section count and section string table section index in section header zero. (Output_file_header::do_sized_write): Check for overflow of section count and section string table section index. (Output_symtab_xindex::do_write): New function. (Output_symtab_xindex::endian_do_write): New function. * output.h (class Output_section_headers): Add shstrtab_section_. Update declarations. (class Output_symtab_xindex): Define. (Output_section::has_out_shndx): New function. * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_ field. (Symbol::init_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::init): Likewise. (Symbol::output_section): Check for ordinary symbol. (Symbol_table::add_from_object): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. (Symbol_table::add_from_relobj): Add symndx_offset parameter. Change all callers. Simplify handling of symbols from sections not included in the link. (Symbol_table::add_from_dynobj): Handle ordinary symbol distinction. (Weak_alias_sorter::operator()): Assert that symbols are ordinary. (Symbol_table::sized_finalize_symbol): Handle ordinary symbol distinction. (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex parameters. Change all callers. (Symbol_table::sized_write_globals): Likewise. Handle ordinary symbol distinction. Use SHN_XINDEX when needed. (Symbol_table::write_section_symbol): Add symtab_xindex parameter. Change all callers. (Symbol_table::sized_write_section_symbol): Likewise. Use SHN_XINDEX when needed. * symtab.h (class Symbol): Add is_ordinary_shndx_ field. Update declarations. (Symbol::shndx): Add is_ordinary parameter. Change all callers. (Symbol::is_defined): Check is_ordinary. (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise. (Symbol::is_absolute, Symbol::is_common): Likewise. (class Sized_symbol): Update declarations. (class Symbol_table): Update declarations. * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::override): Likewise. (Symbol_table::override): Likewise. (symbol_to_bits): Add is_ordinary parameter. Change all callers. (Symbol_table::resolve): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol to be in an ordinary section. * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add object and is_ordinary parameters. Change all callers. (Sized_dwarf_line_info::read_relocs): Add object parameter. Change all callers. Don't add undefined or non-ordinary symbols to reloc_map_. (Sized_dwarf_line_info::read_line_mappings): Add object parameter. Change all callers. * dwarf_reader.h (class Sized_dwarf_line_info): Update declarations. * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol. * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links. (Sized_relobj::relocate_sections): Likewise. * target-reloc.h (scan_relocs): Adjust section symbol index. (scan_relocatable_relocs): Likewise. * i386.cc (Scan::local): Check for ordinary symbols. * sparc.cc (Scan::local): Likewise. * x86_64.cc (Scan::local): Likewise. * testsuite/binary_unittest.cc (Sized_binary_test): Update calls to symbol_section_and_value. * testsuite/many_sections_test.cc: New file. * testsuite/Makefile.am (BUILT_SOURCES): Define. (check_PROGRAMS): Add many_sections_test. (many_sections_test_SOURCES): Define. (many_sections_test_DEPENDENCIES): Define. (many_sections_test_LDFLAGS): Define. (BUILT_SOURCES): Add many_sections_define.h. (many_sections_define.h): New target. (BUILT_SOURCES): Add many_sections_check.h. (many_sections_check.h): New target. (check_PROGRAMS): Add many_sections_r_test. (many_sections_r_test_SOURCES): Define. (many_sections_r_test_DEPENDENCIES): Define. (many_sections_r_test_LDFLAGS): Define. (many_sections_r_test_LDADD): Define. (many_sections_r_test.o): New target. * testsuite/Makefile.in: Rebuild.
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&& !object->is_section_included(shndx))
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{
// RELOC is a relocation against a local symbol
// defined in a section we are discarding. Discard
// the reloc. FIXME: Should we issue a warning?
strategy = Relocatable_relocs::RELOC_DISCARD;
}
else if (lsym.get_st_type() != elfcpp::STT_SECTION)
strategy = scan.local_non_section_strategy(r_type, object,
r_sym);
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else
{
strategy = scan.local_section_strategy(r_type, object);
if (strategy != Relocatable_relocs::RELOC_DISCARD)
Handle output sections with more than 0x7fffffff bytes. * object.h (class Relobj): Change map_to_output_ to output_sections_, and just keep a section pointer. Change all uses. Move comdat group support to Sized_relobj. (Relobj::is_section_specially_mapped): Remove. (Relobj::output_section): Remove poff parameter. Change all callers. (Relobj::output_section_offset): New function. (Relobj::set_section_offset): Rewrite. (Relobj::map_to_output): Remove. (Relobj::output_sections): New function. (Relobj::do_output_section_offset): New pure virtual function. (Relobj::do_set_section_offset): Likewise. (class Sized_relobj): Add section_offsets_ field. Add comdat group support from Relobj. Update declarations. (Sized_relobj::get_output_section_offset): New function. (Sized_relobj::do_output_section_offset): New function. (Sized_relobj::do_set_section_offset): New function. * object.cc (Relobj::output_section_address): Remove. (Sized_relobj::Sized_relobj): Initialize new fields. (Sized_relobj::include_section_group): Cast find_kept_object to Sized_relobj. (Sized_relobj::include_linkonce_section): Likewise. (Sized_relobj::do_layout): Use separate arrays for output section and output offset. (Sized_relobj::do_count_local_symbols): Change map_to_output to output_sections. (Sized_relobj::do_finalize_local_symbols): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_local_symbols): Likewise. (map_to_kept_section): Compute output address directly. * reloc.cc (Sized_relobj::do_read_relocs): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_sections): Likewise. (Sized_relobj::relocate_sections): Likewise. * symtab.cc (sized_finalize_symbol): Use output_section_offset. * output.h (class Output_reloc): Update declarations. Change u2_.relobj to Sized_relobj*. (class Output_data_reloc): Change add functions to use Sized_relobj*. * output.cc (Output_reloc::Output_reloc): Change relobj to Sized_relobj*. (Output_reloc::local_section_offset): Change return type to Elf_Addr. Use get_output_section_offset. (Output_reloc::get_address): Likewise. (Output_section::is_input_address_mapped): Don't call is_section_specially_mapped. (Output_section::output_offset): Likewise. (Output_section::output_address): Likewise. (Output_section::starting_output_address): Likewise. * copy-relocs.cc (Copy_relocs::copy_reloc): Change object parameter to Sized_relobj*. (Copy_relocs::need_copy_reloc): Likewise. (Copy_relocs::save): Likewise. * copy-relocs.h (class Copy_relocs): Update declarations. (class Copy_relocs::Copy_reloc_entry): Change constructor to use Sized_relobj*. Change relobj_ field to Sized_relobj*. * target-reloc.h (relocate_for_relocatable): Change offset_in_output_section type to Elf_Addr. Change code that uses it as well. * layout.cc (Layout::layout): Always set *off. * mapfile.cc (Mapfile::print_input_section): Use output_section_offset. * i386.cc (Target_i386::copy_reloc): Change object parameter to Sized_relobj*. * powerpc.cc (Target_powerpc::copy_reloc): Likewise. * sparc.cc (Target_sparc::copy_reloc): Likewise. * x86_64.cc (Target_x86_64::copy_reloc): Likewise.
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object->output_section(shndx)->set_needs_symtab_index();
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}
* target-reloc.h (relocate_section): Check the symbol table index for -1U before setting the local symbol index. (scan_relocatable_relocs): If copying the relocation, record that the local symbol is required. * object.h (Symbol_value::is_output_symtab_index_set): New function. (Symbol_value::may_be_discarded_from_output_symtab): New function. (Symbol_value::has_output_symtab_entry): New function. (Symbol_value::needs_output_symtab_entry): Remove. (Symbol_value::output_symtab_index): Make sure the symbol index is set. (Symbol_value::set_output_symtab_index): Make sure the symbol index is not set. Make sure the new index is valid. (Symbol_value::set_must_have_output_symtab_entry): New function. (Symbol_value::has_output_dynsym_entry): New function. (Symbol_value::set_output_dynsym_index): Make sure the new index is valid. (Sized_relobj::set_must_have_output_symtab_entry): New function. * object.cc (Sized_relobj::do_count_local_symbols): Only discard a local symbol if permitted. (Sized_relobj::do_finalize_local_symbols): Call is_output_symtab_index_set rather than needs_output_symtab_entry. (Sized_relobj::write_local_symbols): Call has_output_symtab_entry rather than needs_output_symtab_entry. Call has_output_dynsym_entry rather than needs_output_dynsym_entry. * arm.cc (Arm_relobj::update_output_local_symbol_count): Call is_output_symtab_index_set rather than needs_output_symtab_entry. * testsuite/discard_locals_relocatable_test.c: New file. * testsuite/discard_locals_test.sh: Test -r. * testsuite/Makefile.am (check_DATA): Add discard_locals_relocatable_test1.syms, discard_local_relocatable_test2.syms. (MOSTLYCLEANFILES): Likewise. Also add discard_locals_relocatable_test1.lout and discard_locals_relocatable_test2.out. (discard_locals_relocatable_test1.syms): New target. (discard_locals_relocatable_test.o): New target. (discard_locals_relocatable_test1.out): New target. (discard_locals_relocatable_test2.syms): New target. (discard_locals_relocatable_test2.out): New target. (various): Add missing ../ld-new dependencies. * testsuite/Makefile.in: Rebuild.
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if (strategy == Relocatable_relocs::RELOC_COPY)
object->set_must_have_output_symtab_entry(r_sym);
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}
}
rr->set_next_reloc_strategy(strategy);
}
}
// Relocate relocs. Called for a relocatable link, and for --emit-relocs.
// This is a default definition which should work for most targets.
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Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
template<int size, bool big_endian, typename Classify_reloc>
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void
relocate_relocs(
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const Relocate_info<size, big_endian>* relinfo,
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
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unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
section_size_type view_size,
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unsigned char* reloc_view,
section_size_type reloc_view_size)
{
Handle output sections with more than 0x7fffffff bytes. * object.h (class Relobj): Change map_to_output_ to output_sections_, and just keep a section pointer. Change all uses. Move comdat group support to Sized_relobj. (Relobj::is_section_specially_mapped): Remove. (Relobj::output_section): Remove poff parameter. Change all callers. (Relobj::output_section_offset): New function. (Relobj::set_section_offset): Rewrite. (Relobj::map_to_output): Remove. (Relobj::output_sections): New function. (Relobj::do_output_section_offset): New pure virtual function. (Relobj::do_set_section_offset): Likewise. (class Sized_relobj): Add section_offsets_ field. Add comdat group support from Relobj. Update declarations. (Sized_relobj::get_output_section_offset): New function. (Sized_relobj::do_output_section_offset): New function. (Sized_relobj::do_set_section_offset): New function. * object.cc (Relobj::output_section_address): Remove. (Sized_relobj::Sized_relobj): Initialize new fields. (Sized_relobj::include_section_group): Cast find_kept_object to Sized_relobj. (Sized_relobj::include_linkonce_section): Likewise. (Sized_relobj::do_layout): Use separate arrays for output section and output offset. (Sized_relobj::do_count_local_symbols): Change map_to_output to output_sections. (Sized_relobj::do_finalize_local_symbols): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_local_symbols): Likewise. (map_to_kept_section): Compute output address directly. * reloc.cc (Sized_relobj::do_read_relocs): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_sections): Likewise. (Sized_relobj::relocate_sections): Likewise. * symtab.cc (sized_finalize_symbol): Use output_section_offset. * output.h (class Output_reloc): Update declarations. Change u2_.relobj to Sized_relobj*. (class Output_data_reloc): Change add functions to use Sized_relobj*. * output.cc (Output_reloc::Output_reloc): Change relobj to Sized_relobj*. (Output_reloc::local_section_offset): Change return type to Elf_Addr. Use get_output_section_offset. (Output_reloc::get_address): Likewise. (Output_section::is_input_address_mapped): Don't call is_section_specially_mapped. (Output_section::output_offset): Likewise. (Output_section::output_address): Likewise. (Output_section::starting_output_address): Likewise. * copy-relocs.cc (Copy_relocs::copy_reloc): Change object parameter to Sized_relobj*. (Copy_relocs::need_copy_reloc): Likewise. (Copy_relocs::save): Likewise. * copy-relocs.h (class Copy_relocs): Update declarations. (class Copy_relocs::Copy_reloc_entry): Change constructor to use Sized_relobj*. Change relobj_ field to Sized_relobj*. * target-reloc.h (relocate_for_relocatable): Change offset_in_output_section type to Elf_Addr. Change code that uses it as well. * layout.cc (Layout::layout): Always set *off. * mapfile.cc (Mapfile::print_input_section): Use output_section_offset. * i386.cc (Target_i386::copy_reloc): Change object parameter to Sized_relobj*. * powerpc.cc (Target_powerpc::copy_reloc): Likewise. * sparc.cc (Target_sparc::copy_reloc): Likewise. * x86_64.cc (Target_x86_64::copy_reloc): Likewise.
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typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
typedef typename Classify_reloc::Reltype Reltype;
typedef typename Classify_reloc::Reltype_write Reltype_write;
const int reloc_size = Classify_reloc::reloc_size;
const Address invalid_address = static_cast<Address>(0) - 1;
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* incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc info; adjust display of GOT entries. * incremental.cc (Sized_incremental_binary::setup_readers): Allocate vector of input objects; remove file_status_. (Sized_incremental_binary::do_reserve_layout): Remove file_status_. (Sized_incremental_binary::do_process_got_plt): Adjust calls to got_plt reader; call target hooks to reserve GOT entries. (Output_section_incremental_inputs::set_final_data_size): Adjust size of input file info header and GOT info entry. (Output_section_incremental_inputs::write_info_blocks): Write dynamic relocation info. (Got_plt_view_info::got_descriptor): Remove. (Got_plt_view_info::sym_index): New data member. (Got_plt_view_info::input_index): New data member. (Local_got_offset_visitor::visit): Write input file index. (Global_got_offset_visitor::visit): Write 0 for input file index. (Global_symbol_visitor_got_plt::operator()): Replace got_descriptor with sym_index and input_index. (Output_section_incremental_inputs::write_got_plt): Adjust size of incremental info GOT entry; replace got_descriptor with input_index. (Sized_relobj_incr::Sized_relobj_incr): Adjust initializers; record map from input file index to object. (Sized_relobj_incr::do_layout): Replace direct data member reference with accessor function. (Sized_relobj_incr::do_for_all_local_got_entries): Move to base class. * incremental.h (Incremental_input_entry_reader::get_symbol_offset): Adjust size of input file info header. (Incremental_input_entry_reader::get_first_dyn_reloc): New function. (Incremental_input_entry_reader::get_dyn_reloc_count): New function. (Incremental_input_entry_reader::get_input_section): Adjust size of input file info header. (Incremental_got_plt_reader::Incremental_got_plt_reader): Adjust size of incremental info GOT entry. (Incremental_got_plt_reader::get_got_desc): Remove. (Incremental_got_plt_reader::get_got_symndx): New function. (Incremental_got_plt_reader::get_got_input_index): New function. (Sized_incremental_binary::Sized_incremental_binary): Remove file_status_; add input_objects_. (Sized_incremental_binary::~Sized_incremental_binary): Remove. (Sized_incremental_binary::set_file_is_unchanged): Remove. (Sized_incremental_binary::file_is_unchanged): Remove. (Sized_incremental_binary::set_input_object): New function. (Sized_incremental_binary::input_object): New function. (Sized_incremental_binary::file_status_): Remove. (Sized_incremental_binary::input_objects_): New data member. (Sized_relobj_incr): Rename Sized_incr_relobj to this; adjust all references. (Sized_relobj_incr::invalid_address): Move to base class. (Sized_relobj_incr::is_output_section_offset_invalid): Move to base class. (Sized_relobj_incr::do_output_section_offset): Likewise. (Sized_relobj_incr::do_for_all_local_got_entries): Likewise. (Sized_relobj_incr::section_offsets_): Likewise. * object.cc (Sized_relobj::do_for_all_local_got_entries): New function. (Sized_relobj_file::Sized_relobj_file): Remove local_got_offsets_. (Sized_relobj_file::layout_section): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_layout): Likewise. (Sized_relobj_file::do_layout_deferred_sections): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Move to base class. (Sized_relobj_file::compute_final_local_value): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::do_finalize_local_symbols): Likewise. * object.h (Relobj::Relobj): Initialize new data members. (Relobj::add_dyn_reloc): New function. (Relobj::first_dyn_reloc): New function. (Relobj::dyn_reloc_count): New function. (Relobj::first_dyn_reloc_): New data member. (Relobj::dyn_reloc_count_): New data member. (Sized_relobj): Rename Sized_relobj_base to this; adjust all references. (Sized_relobj::Address): New typedef. (Sized_relobj::invalid_address): Move here from child class. (Sized_relobj::Sized_relobj): Initialize new data members. (Sized_relobj::sized_relobj): New function. (Sized_relobj::is_output_section_offset_invalid): Move here from child class. (Sized_relobj::get_output_section_offset): Likewise. (Sized_relobj::local_has_got_offset): Likewise. (Sized_relobj::local_got_offset): Likewise. (Sized_relobj::set_local_got_offset): Likewise. (Sized_relobj::do_for_all_local_got_entries): Likewise. (Sized_relobj::clear_got_offsets): New function. (Sized_relobj::section_offsets): Move here from child class. (Sized_relobj::do_output_section_offset): Likewise. (Sized_relobj::do_set_section_offset): Likewise. (Sized_relobj::Local_got_offsets): Likewise. (Sized_relobj::local_got_offsets_): Likewise. (Sized_relobj::section_offsets_): Likewise. (Sized_relobj_file): Rename Sized_relobj to this; adjust all references. (Sized_relobj_file::is_output_section_offset_invalid): Move to base class. (Sized_relobj_file::sized_relobj): New function (Sized_relobj_file::local_has_got_offset): Move to base class. (Sized_relobj_file::local_got_offset): Likewise. (Sized_relobj_file::set_local_got_offset): Likewise. (Sized_relobj_file::get_output_section_offset): Likewise. (Sized_relobj_file::do_for_all_local_got_entries): Likewise. (Sized_relobj_file::do_output_section_offset): Likewise. (Sized_relobj_file::do_set_section_offset): Likewise. (Sized_relobj_file::Local_got_offsets): Likewise. (Sized_relobj_file::local_got_offsets_): Likewise. (Sized_relobj_file::section_offsets_): Likewise. * output.cc (Output_reloc::Output_reloc): Adjust type of relobj (all constructors). (set_needs_dynsym_index): Convert relobj to derived class pointer. (Output_reloc::get_symbol_index): Likewise. (Output_reloc::local_section_offset): Likewise. (Output_reloc::get_address): Likewise. (Output_reloc::symbol_value): Likewise. (Output_data_got::reserve_slot): Move to class definition. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_slot_for_global): Remove. (Output_data_got::reserve_global): New function. * output.h (Output_reloc::Output_reloc): Adjust type of relobj (all constructors, two instantiations). (Output_reloc::get_relobj): New function (two instantiations). (Output_reloc::u1_.relobj, Output_reloc::u2_.relobj): Adjust type. (Output_data_reloc_base::add): Convert relobj to derived class pointer. (Output_data_reloc::add_global): Adjust type of relobj. (Output_data_reloc::add_global_relative): Likewise. (Output_data_reloc::add_symbolless_global_addend): Likewise. (Output_data_reloc::add_local): Likewise. (Output_data_reloc::add_local_relative): Likewise. (Output_data_reloc::add_symbolless_local_addend): Likewise. (Output_data_reloc::add_local_section): Likewise. (Output_data_reloc::add_output_section): Likewise. (Output_data_reloc::add_absolute): Likewise. (Output_data_reloc::add_target_specific): Likewise. (Output_data_got::reserve_slot): Move definition here. (Output_data_got::reserve_local): New function. (Output_data_got::reserve_global): New function. * reloc.cc (Sized_relobj_file::do_read_relocs): Replace refs to section_offsets_ with accessor function. (Sized_relobj_file::write_sections): Likewise. (Sized_relobj_file::do_relocate_sections): Likewise. * target.h (Sized_target::reserve_local_got_entry): New function. (Sized_target::reserve_global_got_entry): New function. * x86_64.cc (Target_x86_64::reserve_local_got_entry): New function. (Target_x86_64::reserve_global_got_entry): New function. (Target_x86_64::init_got_plt_for_update): Create rela_dyn section.
2011-05-24 23:41:10 +02:00
Sized_relobj_file<size, big_endian>* const object = relinfo->object;
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const unsigned int local_count = object->local_symbol_count();
unsigned char* pwrite = reloc_view;
Fix symbol values and relocation addends for relocatable links. The fix for PR 19291 broke some other cases where -r is used with scripts, as reported in PR 22266. The original fix for PR 22266 ended up breaking many cases for REL targets, where the addends are stored in the section data, and are not being adjusted properly. The problem was basically that in a relocatable output file (ET_REL), symbol values are supposed to be relative to the start address of their section. Usually in a relocatable file, all sections start at 0, so the failure to get this right is often irrelevant, but with a linker script, we occasionally see an output section whose starting address is not 0, and gold would occasionally write a symbol with its relocated value instead of its section-relative value. This patch reverts the recent fix for PR 22266 as well as my original fix for PR 19291. The original fix moved the symbol value adjustment to write_local_symbols, but neglected to undo a few places where the adjustment was also being applied, resulting in an occasional double adjustment. The more recent fix removed those other adjustments, but then failed to re-account for the adjustment when rewriting the relocations on REL targets. With the old attempts reverted, we now apply the symbol value adjustment to the one case that had been missed (non-section symbols in merge sections). But now we also need to account for the adjustment when rewriting the addends for RELA relocations. gold/ PR gold/19291 PR gold/22266 * object.cc (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. Adjust symbol value in relocatable links for non-section symbols. (Sized_relobj_file::compute_final_local_value): Revert changes from 2017-11-08 patch. (Sized_relobj_file::do_finalize_local_symbols): Likewise. (Sized_relobj_file::write_local_symbols): Revert changes from 2015-11-25 patch. * object.h (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. * powerpc.cc (Target_powerpc::relocate_relocs): Adjust addend for relocatable links. * target-reloc.h (relocate_relocs): Adjust addend for relocatable links. * testsuite/pr22266_a.c (hello): New function. * testsuite/pr22266_main.c (main): Add test for merge sections. * testsuite/pr22266_script.t: Add rule for .rodata.
2017-11-28 02:32:55 +01:00
const bool relocatable = parameters->options().relocatable();
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for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
{
[GOLD] Relocate::relocate() params Some linker code editing needs to change multiple insns. In some cases multiple relocations are involved and it is not sufficient to make the changes independently as relocations are processed, because doing so might lead to a partial edit. So in order to safely edit we need all the relocations available in relocate(). Also, to emit edited relocs corresponding to the edited code sequence we need some way to pass information from relocate() to relocate_relocs(), particularly if the edit depends on insns. We can't modify input relocs in relocate() as they are mmapped PROT_READ, nor it is particularly clean to write relocs to the output at that stage. So add a Relocatable_relocs* field to relinfo to mark edited relocs. Given that relocate is passed the raw reloc pointer, it makes sense to remove the rel/rela parameter and r_type too. However, that means the mips relocate() needs to know whether SHT_REL or SHT_RELA relocs are being processed. So add a rel_type for mips, which also has the benefit of removing relocate() overloading there. This patch adds the infrastructure without making use of it. Note that relinfo->rr will be NULL if not outputting relocations. * object.h (struct Relocate_info): Add "rr". * reloc.h (Relocatable_relocs::set_strategy): New accessor. * reloc.cc (Sized_relobj_file::do_relocate_sections): Init relinfo.rr for relocate_section and relocate_relocs. * powerpc.cc (relocate): Add rel_type and preloc parameters. Delete rela and r_type params, instead recalculate these from preloc. (relocate_relocs): Delete Relocatable_relocs* param, instead use relinfo->rr. * aarch64.cc: Likewise. * arm.cc: Likewise. * i386.cc: Likewise. * mips.cc: Likewise. * s390.cc: Likewise. * sparc.cc: Likewise. * target.h: Likewise. * tilegx.cc: Likewise. * x86_64.cc: Likewise. * testsuite/testfile.cc: Likewise. * target-reloc.h (relocate_section): Adjust to suit. (apply_relocation, relocate_relocs): Likewise.
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Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i);
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if (strategy == Relocatable_relocs::RELOC_DISCARD)
continue;
if (strategy == Relocatable_relocs::RELOC_SPECIAL)
{
// Target wants to handle this relocation.
Sized_target<size, big_endian>* target =
parameters->sized_target<size, big_endian>();
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
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target->relocate_special_relocatable(relinfo, Classify_reloc::sh_type,
prelocs, i, output_section,
offset_in_output_section,
view, view_address,
view_size, pwrite);
pwrite += reloc_size;
continue;
}
2008-02-06 09:13:50 +01:00
Reltype reloc(prelocs);
Reltype_write reloc_write(pwrite);
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
const unsigned int r_sym = Classify_reloc::get_r_sym(&reloc);
2008-02-06 09:13:50 +01:00
// Get the new symbol index.
Output_section* os = NULL;
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unsigned int new_symndx;
if (r_sym < local_count)
{
switch (strategy)
{
case Relocatable_relocs::RELOC_COPY:
if (r_sym == 0)
new_symndx = 0;
else
{
new_symndx = object->symtab_index(r_sym);
gold_assert(new_symndx != -1U);
}
2008-02-06 09:13:50 +01:00
break;
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA:
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case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0:
2008-02-06 09:13:50 +01:00
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1:
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2:
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4:
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8:
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4_UNALIGNED:
2008-02-06 09:13:50 +01:00
{
// We are adjusting a section symbol. We need to find
// the symbol table index of the section symbol for
// the output section corresponding to input section
// in which this symbol is defined.
gold_assert(r_sym < local_count);
* object.cc (Xindex::initialize_symtab_xindex): New function. (Xindex::read_symtab_xindex): New function. (Xindex::sym_xindex_to_shndx): New function. (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if available. (Sized_relobj::do_initialize_xindex): New function. (Sized_relobj::do_read_symbols): Adjust section links. (Sized_relobj::symbol_section_and_value): Add is_ordinary parameter. Change all callers. (Sized_relobj::include_section_group): Adjust section links and symbol section indexes. (Sized_relobj::do_layout): Adjust section links. (Sized_relobj::do_count_local_symbols): Adjust section links and symbol section indexes. (Sized_relobj::do_finalize_local_symbols): Distinguish between ordinary and special symbols. (Sized_relobj::write_local_symbols): Add symtab_xindex and dynsym_xindex parameters. Change all callers. Adjust section links. Use SHN_XINDEX when needed. (Sized_relobj::get_symbol_location_info): Adjust section links. Don't get fooled by special symbols. * object.h (class Xindex): Define. (class Object): Add xindex_ parameter. Declare virtual functoin do_initialize_xindex. (Object::adjust_sym_shndx): New function. (Object::set_xindex): New protected function. (class Symbol_value): Add is_ordinary_shndx_ field. (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_. (Symbol_value::value): Assert ordinary section. (Symbol_value::initialize_input_to_output_map): Likewise. (Symbol_value::set_input_shndx): Add is_ordinary parameter. Change all callers. (Symbol_value::input_shndx): Add is_ordinary parameter. Change all callers. (class Sized_relobj): Update declarations. (Sized_relobj::local_symbol_input_shndx): Add is_ordinary parameter. Change all callers. (Sized_relobj::adjust_shndx): New function. * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_ field. (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx parameter. Change all callers. Pick up SHT_DYNSYM_SHNDX section for SHT_DYNSYM section if available. Set dynsym_shndx_ field. (Sized_dynobj::read_dynsym_section): Adjust section links. (Sized_dynobj::read_dynamic): Likewise. (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field. Adjust section links. (Sized_dynobj::do_initialize_xindex): New function. * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field. Declare do_initialize_xindex. (Sized_dynobj::adjust_shndx): New function. * layout.cc (Layout::Layout): Initialize symtab_xindex_ and dynsym_xindex_ fields. (Layout::finalize): Add a call to set_section_indexes before creating the symtab sections. (Layout::set_section_indexes): Don't do anything if the section already has a section index. (Layout::create_symtab_sections): Add shnum parameter. Change caller. Create .symtab_shndx section if needed. (Layout::create_shdrs): Add shstrtab_section parameter. Change caller. (Layout::allocated_output_section_count): New function. (Layout::create_dynamic_symtab): Create .dynsym_shndx section if needed. * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_ fields. Update declarations. (Layout::symtab_xindex): New function. (Layout::dynsym_xindex): New function. (class Write_symbols_task): Add layout_ field. (Write_symbols_task::Write_symbols_task): Add layout parameter. Change caller. * output.cc (Output_section_headers::Output_section_headers): Add shstrtab_section parameter. Change all callers. (Output_section_headers::do_sized_write): Store overflow values for section count and section string table section index in section header zero. (Output_file_header::do_sized_write): Check for overflow of section count and section string table section index. (Output_symtab_xindex::do_write): New function. (Output_symtab_xindex::endian_do_write): New function. * output.h (class Output_section_headers): Add shstrtab_section_. Update declarations. (class Output_symtab_xindex): Define. (Output_section::has_out_shndx): New function. * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_ field. (Symbol::init_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::init): Likewise. (Symbol::output_section): Check for ordinary symbol. (Symbol_table::add_from_object): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. (Symbol_table::add_from_relobj): Add symndx_offset parameter. Change all callers. Simplify handling of symbols from sections not included in the link. (Symbol_table::add_from_dynobj): Handle ordinary symbol distinction. (Weak_alias_sorter::operator()): Assert that symbols are ordinary. (Symbol_table::sized_finalize_symbol): Handle ordinary symbol distinction. (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex parameters. Change all callers. (Symbol_table::sized_write_globals): Likewise. Handle ordinary symbol distinction. Use SHN_XINDEX when needed. (Symbol_table::write_section_symbol): Add symtab_xindex parameter. Change all callers. (Symbol_table::sized_write_section_symbol): Likewise. Use SHN_XINDEX when needed. * symtab.h (class Symbol): Add is_ordinary_shndx_ field. Update declarations. (Symbol::shndx): Add is_ordinary parameter. Change all callers. (Symbol::is_defined): Check is_ordinary. (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise. (Symbol::is_absolute, Symbol::is_common): Likewise. (class Sized_symbol): Update declarations. (class Symbol_table): Update declarations. * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::override): Likewise. (Symbol_table::override): Likewise. (symbol_to_bits): Add is_ordinary parameter. Change all callers. (Symbol_table::resolve): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol to be in an ordinary section. * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add object and is_ordinary parameters. Change all callers. (Sized_dwarf_line_info::read_relocs): Add object parameter. Change all callers. Don't add undefined or non-ordinary symbols to reloc_map_. (Sized_dwarf_line_info::read_line_mappings): Add object parameter. Change all callers. * dwarf_reader.h (class Sized_dwarf_line_info): Update declarations. * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol. * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links. (Sized_relobj::relocate_sections): Likewise. * target-reloc.h (scan_relocs): Adjust section symbol index. (scan_relocatable_relocs): Likewise. * i386.cc (Scan::local): Check for ordinary symbols. * sparc.cc (Scan::local): Likewise. * x86_64.cc (Scan::local): Likewise. * testsuite/binary_unittest.cc (Sized_binary_test): Update calls to symbol_section_and_value. * testsuite/many_sections_test.cc: New file. * testsuite/Makefile.am (BUILT_SOURCES): Define. (check_PROGRAMS): Add many_sections_test. (many_sections_test_SOURCES): Define. (many_sections_test_DEPENDENCIES): Define. (many_sections_test_LDFLAGS): Define. (BUILT_SOURCES): Add many_sections_define.h. (many_sections_define.h): New target. (BUILT_SOURCES): Add many_sections_check.h. (many_sections_check.h): New target. (check_PROGRAMS): Add many_sections_r_test. (many_sections_r_test_SOURCES): Define. (many_sections_r_test_DEPENDENCIES): Define. (many_sections_r_test_LDFLAGS): Define. (many_sections_r_test_LDADD): Define. (many_sections_r_test.o): New target. * testsuite/Makefile.in: Rebuild.
2008-04-19 20:30:58 +02:00
bool is_ordinary;
unsigned int shndx =
object->local_symbol_input_shndx(r_sym, &is_ordinary);
gold_assert(is_ordinary);
os = object->output_section(shndx);
2008-02-06 09:13:50 +01:00
gold_assert(os != NULL);
gold_assert(os->needs_symtab_index());
new_symndx = os->symtab_index();
}
break;
default:
gold_unreachable();
}
}
else
{
const Symbol* gsym = object->global_symbol(r_sym);
gold_assert(gsym != NULL);
if (gsym->is_forwarder())
gsym = relinfo->symtab->resolve_forwards(gsym);
gold_assert(gsym->has_symtab_index());
new_symndx = gsym->symtab_index();
}
// Get the new offset--the location in the output section where
// this relocation should be applied.
Handle output sections with more than 0x7fffffff bytes. * object.h (class Relobj): Change map_to_output_ to output_sections_, and just keep a section pointer. Change all uses. Move comdat group support to Sized_relobj. (Relobj::is_section_specially_mapped): Remove. (Relobj::output_section): Remove poff parameter. Change all callers. (Relobj::output_section_offset): New function. (Relobj::set_section_offset): Rewrite. (Relobj::map_to_output): Remove. (Relobj::output_sections): New function. (Relobj::do_output_section_offset): New pure virtual function. (Relobj::do_set_section_offset): Likewise. (class Sized_relobj): Add section_offsets_ field. Add comdat group support from Relobj. Update declarations. (Sized_relobj::get_output_section_offset): New function. (Sized_relobj::do_output_section_offset): New function. (Sized_relobj::do_set_section_offset): New function. * object.cc (Relobj::output_section_address): Remove. (Sized_relobj::Sized_relobj): Initialize new fields. (Sized_relobj::include_section_group): Cast find_kept_object to Sized_relobj. (Sized_relobj::include_linkonce_section): Likewise. (Sized_relobj::do_layout): Use separate arrays for output section and output offset. (Sized_relobj::do_count_local_symbols): Change map_to_output to output_sections. (Sized_relobj::do_finalize_local_symbols): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_local_symbols): Likewise. (map_to_kept_section): Compute output address directly. * reloc.cc (Sized_relobj::do_read_relocs): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_sections): Likewise. (Sized_relobj::relocate_sections): Likewise. * symtab.cc (sized_finalize_symbol): Use output_section_offset. * output.h (class Output_reloc): Update declarations. Change u2_.relobj to Sized_relobj*. (class Output_data_reloc): Change add functions to use Sized_relobj*. * output.cc (Output_reloc::Output_reloc): Change relobj to Sized_relobj*. (Output_reloc::local_section_offset): Change return type to Elf_Addr. Use get_output_section_offset. (Output_reloc::get_address): Likewise. (Output_section::is_input_address_mapped): Don't call is_section_specially_mapped. (Output_section::output_offset): Likewise. (Output_section::output_address): Likewise. (Output_section::starting_output_address): Likewise. * copy-relocs.cc (Copy_relocs::copy_reloc): Change object parameter to Sized_relobj*. (Copy_relocs::need_copy_reloc): Likewise. (Copy_relocs::save): Likewise. * copy-relocs.h (class Copy_relocs): Update declarations. (class Copy_relocs::Copy_reloc_entry): Change constructor to use Sized_relobj*. Change relobj_ field to Sized_relobj*. * target-reloc.h (relocate_for_relocatable): Change offset_in_output_section type to Elf_Addr. Change code that uses it as well. * layout.cc (Layout::layout): Always set *off. * mapfile.cc (Mapfile::print_input_section): Use output_section_offset. * i386.cc (Target_i386::copy_reloc): Change object parameter to Sized_relobj*. * powerpc.cc (Target_powerpc::copy_reloc): Likewise. * sparc.cc (Target_sparc::copy_reloc): Likewise. * x86_64.cc (Target_x86_64::copy_reloc): Likewise.
2008-07-11 01:01:20 +02:00
Address offset = reloc.get_r_offset();
Address new_offset;
if (offset_in_output_section != invalid_address)
2008-02-06 09:13:50 +01:00
new_offset = offset + offset_in_output_section;
else
{
Handle output sections with more than 0x7fffffff bytes. * object.h (class Relobj): Change map_to_output_ to output_sections_, and just keep a section pointer. Change all uses. Move comdat group support to Sized_relobj. (Relobj::is_section_specially_mapped): Remove. (Relobj::output_section): Remove poff parameter. Change all callers. (Relobj::output_section_offset): New function. (Relobj::set_section_offset): Rewrite. (Relobj::map_to_output): Remove. (Relobj::output_sections): New function. (Relobj::do_output_section_offset): New pure virtual function. (Relobj::do_set_section_offset): Likewise. (class Sized_relobj): Add section_offsets_ field. Add comdat group support from Relobj. Update declarations. (Sized_relobj::get_output_section_offset): New function. (Sized_relobj::do_output_section_offset): New function. (Sized_relobj::do_set_section_offset): New function. * object.cc (Relobj::output_section_address): Remove. (Sized_relobj::Sized_relobj): Initialize new fields. (Sized_relobj::include_section_group): Cast find_kept_object to Sized_relobj. (Sized_relobj::include_linkonce_section): Likewise. (Sized_relobj::do_layout): Use separate arrays for output section and output offset. (Sized_relobj::do_count_local_symbols): Change map_to_output to output_sections. (Sized_relobj::do_finalize_local_symbols): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_local_symbols): Likewise. (map_to_kept_section): Compute output address directly. * reloc.cc (Sized_relobj::do_read_relocs): Change map_to_output to output_sections and section_offsets. (Sized_relobj::write_sections): Likewise. (Sized_relobj::relocate_sections): Likewise. * symtab.cc (sized_finalize_symbol): Use output_section_offset. * output.h (class Output_reloc): Update declarations. Change u2_.relobj to Sized_relobj*. (class Output_data_reloc): Change add functions to use Sized_relobj*. * output.cc (Output_reloc::Output_reloc): Change relobj to Sized_relobj*. (Output_reloc::local_section_offset): Change return type to Elf_Addr. Use get_output_section_offset. (Output_reloc::get_address): Likewise. (Output_section::is_input_address_mapped): Don't call is_section_specially_mapped. (Output_section::output_offset): Likewise. (Output_section::output_address): Likewise. (Output_section::starting_output_address): Likewise. * copy-relocs.cc (Copy_relocs::copy_reloc): Change object parameter to Sized_relobj*. (Copy_relocs::need_copy_reloc): Likewise. (Copy_relocs::save): Likewise. * copy-relocs.h (class Copy_relocs): Update declarations. (class Copy_relocs::Copy_reloc_entry): Change constructor to use Sized_relobj*. Change relobj_ field to Sized_relobj*. * target-reloc.h (relocate_for_relocatable): Change offset_in_output_section type to Elf_Addr. Change code that uses it as well. * layout.cc (Layout::layout): Always set *off. * mapfile.cc (Mapfile::print_input_section): Use output_section_offset. * i386.cc (Target_i386::copy_reloc): Change object parameter to Sized_relobj*. * powerpc.cc (Target_powerpc::copy_reloc): Likewise. * sparc.cc (Target_sparc::copy_reloc): Likewise. * x86_64.cc (Target_x86_64::copy_reloc): Likewise.
2008-07-11 01:01:20 +02:00
section_offset_type sot_offset =
convert_types<section_offset_type, Address>(offset);
section_offset_type new_sot_offset =
output_section->output_offset(object, relinfo->data_shndx,
sot_offset);
gold_assert(new_sot_offset != -1);
new_offset = new_sot_offset;
2008-02-06 09:13:50 +01:00
}
// In an object file, r_offset is an offset within the section.
// In an executable or dynamic object, generated by
// --emit-relocs, r_offset is an absolute address.
Fix symbol values and relocation addends for relocatable links. The fix for PR 19291 broke some other cases where -r is used with scripts, as reported in PR 22266. The original fix for PR 22266 ended up breaking many cases for REL targets, where the addends are stored in the section data, and are not being adjusted properly. The problem was basically that in a relocatable output file (ET_REL), symbol values are supposed to be relative to the start address of their section. Usually in a relocatable file, all sections start at 0, so the failure to get this right is often irrelevant, but with a linker script, we occasionally see an output section whose starting address is not 0, and gold would occasionally write a symbol with its relocated value instead of its section-relative value. This patch reverts the recent fix for PR 22266 as well as my original fix for PR 19291. The original fix moved the symbol value adjustment to write_local_symbols, but neglected to undo a few places where the adjustment was also being applied, resulting in an occasional double adjustment. The more recent fix removed those other adjustments, but then failed to re-account for the adjustment when rewriting the relocations on REL targets. With the old attempts reverted, we now apply the symbol value adjustment to the one case that had been missed (non-section symbols in merge sections). But now we also need to account for the adjustment when rewriting the addends for RELA relocations. gold/ PR gold/19291 PR gold/22266 * object.cc (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. Adjust symbol value in relocatable links for non-section symbols. (Sized_relobj_file::compute_final_local_value): Revert changes from 2017-11-08 patch. (Sized_relobj_file::do_finalize_local_symbols): Likewise. (Sized_relobj_file::write_local_symbols): Revert changes from 2015-11-25 patch. * object.h (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. * powerpc.cc (Target_powerpc::relocate_relocs): Adjust addend for relocatable links. * target-reloc.h (relocate_relocs): Adjust addend for relocatable links. * testsuite/pr22266_a.c (hello): New function. * testsuite/pr22266_main.c (main): Add test for merge sections. * testsuite/pr22266_script.t: Add rule for .rodata.
2017-11-28 02:32:55 +01:00
if (!relocatable)
{
new_offset += view_address;
if (offset_in_output_section != invalid_address)
new_offset -= offset_in_output_section;
}
2008-02-06 09:13:50 +01:00
reloc_write.put_r_offset(new_offset);
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
Classify_reloc::put_r_info(&reloc_write, &reloc, new_symndx);
2008-02-06 09:13:50 +01:00
// Handle the reloc addend based on the strategy.
if (strategy == Relocatable_relocs::RELOC_COPY)
{
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
if (Classify_reloc::sh_type == elfcpp::SHT_RELA)
Classify_reloc::put_r_addend(&reloc_write,
Classify_reloc::get_r_addend(&reloc));
2008-02-06 09:13:50 +01:00
}
else
{
// The relocation uses a section symbol in the input file.
// We are adjusting it to use a section symbol in the output
// file. The input section symbol refers to some address in
// the input section. We need the relocation in the output
// file to refer to that same address. This adjustment to
// the addend is the same calculation we use for a simple
// absolute relocation for the input section symbol.
const Symbol_value<size>* psymval = object->local_symbol(r_sym);
unsigned char* padd = view + offset;
switch (strategy)
{
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA:
{
Fix symbol values and relocation addends for relocatable links. The fix for PR 19291 broke some other cases where -r is used with scripts, as reported in PR 22266. The original fix for PR 22266 ended up breaking many cases for REL targets, where the addends are stored in the section data, and are not being adjusted properly. The problem was basically that in a relocatable output file (ET_REL), symbol values are supposed to be relative to the start address of their section. Usually in a relocatable file, all sections start at 0, so the failure to get this right is often irrelevant, but with a linker script, we occasionally see an output section whose starting address is not 0, and gold would occasionally write a symbol with its relocated value instead of its section-relative value. This patch reverts the recent fix for PR 22266 as well as my original fix for PR 19291. The original fix moved the symbol value adjustment to write_local_symbols, but neglected to undo a few places where the adjustment was also being applied, resulting in an occasional double adjustment. The more recent fix removed those other adjustments, but then failed to re-account for the adjustment when rewriting the relocations on REL targets. With the old attempts reverted, we now apply the symbol value adjustment to the one case that had been missed (non-section symbols in merge sections). But now we also need to account for the adjustment when rewriting the addends for RELA relocations. gold/ PR gold/19291 PR gold/22266 * object.cc (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. Adjust symbol value in relocatable links for non-section symbols. (Sized_relobj_file::compute_final_local_value): Revert changes from 2017-11-08 patch. (Sized_relobj_file::do_finalize_local_symbols): Likewise. (Sized_relobj_file::write_local_symbols): Revert changes from 2015-11-25 patch. * object.h (Sized_relobj_file::compute_final_local_value_internal): Revert changes from 2017-11-08 patch. * powerpc.cc (Target_powerpc::relocate_relocs): Adjust addend for relocatable links. * target-reloc.h (relocate_relocs): Adjust addend for relocatable links. * testsuite/pr22266_a.c (hello): New function. * testsuite/pr22266_main.c (main): Add test for merge sections. * testsuite/pr22266_script.t: Add rule for .rodata.
2017-11-28 02:32:55 +01:00
typename elfcpp::Elf_types<size>::Elf_Swxword addend
= Classify_reloc::get_r_addend(&reloc);
addend = psymval->value(object, addend);
// In a relocatable link, the symbol value is relative to
// the start of the output section. For a non-relocatable
// link, we need to adjust the addend.
if (!relocatable)
{
gold_assert(os != NULL);
addend -= os->address();
}
Refactor gold to enable support for MIPS-64 relocation format. For MIPS-64, the r_info field in the relocation format is replaced by several individual fields, including r_sym and r_type. To enable support for this format, I've refactored target-independent code to remove almost all uses of the r_info field. (I've left alone a couple of routines used only for incremental linking, which I can update if/when the MIPS target adds support for incremental linking.) For routines that are already templated on a Classify_reloc class (namely, gc_process_relocs, relocate_section, and relocate_relocs), I've extended the Classify_reloc interface to include sh_type (which no longer needs to be a separate template parameter) as well as get_r_sym() and get_r_type() methods for extracting the r_sym and r_type fields. For scan_relocatable_relocs, I've extended the Default_scan_relocatable_relocs class by converting it to a class template with Classify_reloc as a template parameter. For the remaining routines that need to access r_sym, I've added a virtual Target::get_r_sym() method with an override for the MIPS target. In elfcpp, I've added Mips64_rel, etc., accessor classes and corresponding internal data structures. The MIPS target uses these new classes within its own Mips_classify_reloc class. The Mips64_ accessor classes also expose the r_ssym, r_type2, and r_type3 fields from the relocation. These changes should be functionally the same for all but the MIPS target. elfcpp/ * elfcpp.h (Mips64_rel, Mips64_rel_write): New classes. (Mips64_rela, Mips64_rela_write): New classes. * elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs. gold/ * gc.h (get_embedded_addend_size): Remove sh_type parameter. (gc_process_relocs): Remove sh_type template parameter. Use Classify_reloc to access r_sym, r_type, and r_addend fields. * object.h (Sized_relobj_file::split_stack_adjust): Add target parameter. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. * reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA specializations) Remove. * reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h. (Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan(). (Sized_relobj_file::emit_relocs_scan_reltype): Remove. (Sized_relobj_file::split_stack_adjust): Add target parameter. Adjust all callers. (Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call Target::get_r_sym() to get r_sym field from relocations. (Track_relocs::next_symndx): Call Target::get_r_sym(). * target-reloc.h (scan_relocs): Remove sh_type template parameter; add Classify_reloc template parameter. Use for accessing r_sym and r_type. (relocate_section): Likewise. (Default_classify_reloc): New class (renamed and moved from reloc.cc). (Default_scan_relocatable_relocs): Remove sh_type template parameter. (Default_scan_relocatable_relocs::Reltype): New typedef. (Default_scan_relocatable_relocs::reloc_size): New const. (Default_scan_relocatable_relocs::sh_type): New const. (Default_scan_relocatable_relocs::get_r_sym): New method. (Default_scan_relocatable_relocs::get_r_type): New method. (Default_emit_relocs_strategy): New class. (scan_relocatable_relocs): Replace sh_type template parameter with Scan_relocatable_relocs class. Use it to access r_sym and r_type fields. (relocate_relocs): Replace sh_type template parameter with Classify_reloc class. Use it to access r_sym and r_type fields. * target.h (Target::is_call_to_non_split): Replace r_type parameter with pointer to relocation. Adjust all callers. (Target::do_is_call_to_non_split): Likewise. (Target::emit_relocs_scan): New virtual method. (Sized_target::get_r_sym): New virtual method. * target.cc (Target::do_is_call_to_non_split): Replace r_type parameter with pointer to relocation. * aarch64.cc (Target_aarch64::emit_relocs_scan): New method. (Target_aarch64::Relocatable_size_for_reloc): Remove. (Target_aarch64::gc_process_relocs): Use Default_classify_reloc. (Target_aarch64::scan_relocs): Likewise. (Target_aarch64::relocate_section): Likewise. (Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_aarch64::relocate_relocs): Use Default_classify_reloc. * arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type template parameter. (Target_arm::emit_relocs_scan): New method. (Target_arm::Relocatable_size_for_reloc): Replace with... (Target_arm::Classify_reloc): ...this. (Target_arm::gc_process_relocs): Use Classify_reloc. (Target_arm::scan_relocs): Likewise. (Target_arm::relocate_section): Likewise. (Target_arm::scan_relocatable_relocs): Likewise. (Target_arm::relocate_relocs): Likewise. * i386.cc (Target_i386::emit_relocs_scan): New method. (Target_i386::Relocatable_size_for_reloc): Replace with... (Target_i386::Classify_reloc): ...this. (Target_i386::gc_process_relocs): Use Classify_reloc. (Target_i386::scan_relocs): Likewise. (Target_i386::relocate_section): Likewise. (Target_i386::scan_relocatable_relocs): Likewise. (Target_i386::relocate_relocs): Likewise. * mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template parameter. (Mips_reloc_types): New class template. (Mips_classify_reloc): New class template. (Target_mips::Reltype): New typedef. (Target_mips::Relatype): New typedef. (Target_mips::emit_relocs_scan): New method. (Target_mips::get_r_sym): New method. (Target_mips::Relocatable_size_for_reloc): Replace with Mips_classify_reloc. (Target_mips::copy_reloc): Use Mips_classify_reloc. (Target_mips::gc_process_relocs): Likewise. (Target_mips::scan_relocs): Likewise. (Target_mips::relocate_section): Likewise. (Target_mips::scan_relocatable_relocs): Likewise. (Target_mips::relocate_relocs): Likewise. (mips_get_size_for_reloc): New function, factored out from Relocatable_size_for_reloc::get_size_for_reloc. (Target_mips::Scan::local): Use Mips_classify_reloc. (Target_mips::Scan::global): Likewise. (Target_mips::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::emit_relocs_scan): New method. (Target_powerpc::Relocatable_size_for_reloc): Remove. (Target_powerpc::gc_process_relocs): Use Default_classify_reloc. (Target_powerpc::scan_relocs): Likewise. (Target_powerpc::relocate_section): Likewise. (Powerpc_scan_relocatable_reloc): Convert to class template. (Powerpc_scan_relocatable_reloc::Reltype): New typedef. (Powerpc_scan_relocatable_reloc::reloc_size): New const. (Powerpc_scan_relocatable_reloc::sh_type): New const. (Powerpc_scan_relocatable_reloc::get_r_sym): New method. (Powerpc_scan_relocatable_reloc::get_r_type): New method. (Target_powerpc::scan_relocatable_relocs): Use Powerpc_scan_relocatable_reloc. (Target_powerpc::relocate_relocs): Use Default_classify_reloc. * s390.cc (Target_s390::emit_relocs_scan): New method. (Target_s390::Relocatable_size_for_reloc): Remove. (Target_s390::gc_process_relocs): Use Default_classify_reloc. (Target_s390::scan_relocs): Likewise. (Target_s390::relocate_section): Likewise. (Target_s390::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_s390::scan_relocatable_relocs): Use Default_classify_reloc. (Target_s390::relocate_relocs): Use Default_classify_reloc. * sparc.cc (Target_sparc::emit_relocs_scan): New method. (Target_sparc::Relocatable_size_for_reloc): Remove. (Target_sparc::gc_process_relocs): Use Default_classify_reloc. (Target_sparc::scan_relocs): Likewise. (Target_sparc::relocate_section): Likewise. (Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc. (Target_sparc::relocate_relocs): Use Default_classify_reloc. * tilegx.cc (Target_tilegx::emit_relocs_scan): New method. (Target_tilegx::Relocatable_size_for_reloc): Remove. (Target_tilegx::gc_process_relocs): Use Default_classify_reloc. (Target_tilegx::scan_relocs): Likewise. (Target_tilegx::relocate_section): Likewise. (Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc. (Target_tilegx::relocate_relocs): Use Default_classify_reloc. * x86_64.cc (Target_x86_64::emit_relocs_scan): New method. (Target_x86_64::Relocatable_size_for_reloc): Remove. (Target_x86_64::gc_process_relocs): Use Default_classify_reloc. (Target_x86_64::scan_relocs): Likewise. (Target_x86_64::relocate_section): Likewise. (Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc): Remove. (Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc. (Target_x86_64::relocate_relocs): Use Default_classify_reloc. * testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
2015-12-11 16:43:59 +01:00
Classify_reloc::put_r_addend(&reloc_write, addend);
2008-02-06 09:13:50 +01:00
}
break;
2008-02-27 23:38:18 +01:00
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0:
break;
2008-02-06 09:13:50 +01:00
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1:
Relocate_functions<size, big_endian>::rel8(padd, object,
psymval);
break;
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2:
Relocate_functions<size, big_endian>::rel16(padd, object,
psymval);
break;
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4:
Relocate_functions<size, big_endian>::rel32(padd, object,
psymval);
break;
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8:
Relocate_functions<size, big_endian>::rel64(padd, object,
psymval);
break;
case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4_UNALIGNED:
Relocate_functions<size, big_endian>::rel32_unaligned(padd,
object,
psymval);
break;
2008-02-06 09:13:50 +01:00
default:
gold_unreachable();
}
}
pwrite += reloc_size;
}
gold_assert(static_cast<section_size_type>(pwrite - reloc_view)
== reloc_view_size);
}
} // End namespace gold.
#endif // !defined(GOLD_TARGET_RELOC_H)