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2021-03-19Fix call to system fallocate to handle errno correctly.Holger Berger1-2/+4
2021-03-19 Holger Berger <holger.berger@googlemail.com> gold/ PR gold/26541 * output.cc (gold_fallocate): Use errno when calling system fallocate.
2021-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2020-10-13gold: Properly align the NT_GNU_PROPERTY_TYPE_0 noteH.J. Lu1-0/+1
The NT_GNU_PROPERTY_TYPE_0 note should be aligned to 8 bytes for 64-bit ELF as specified by gABI. A note section can be only placed in a PT_NOTE segment with the same alignment. PR gold/22914 PR gold/23535 * layout.cc (Layout::attach_allocated_section_to_segment): Place a note section in a PT_NOTE segment with the same alignment. Set the alignment of the PT_NOTE segment from the alignment of the note section. (Layout::create_note): Align the NT_GNU_PROPERTY_TYPE_0 note to 8 bytes for 64-bit ELF. (Layout::segment_precedes): Place segments with larger alignments first. * output.cc (Output_segment::Output_segment): Initialize align_. * output.h (Output_segment): Add align, set_align and align_. * testsuite/Makefile.am (gnu_property_test.stdout): Pass -lhSWn to $(TEST_READELF). (gnu_property_test): Pass --build-id to ld. * testsuite/Makefile.in: Regenerated. * testsuite/gnu_property_test.sh (check_alignment): New. Use check_alignment to check the NT_GNU_PROPERTY_TYPE_0 note alignment. Verify that there are 2 PT_NOTE segments.
2020-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2019-11-26Introduce new .text.sorted.* sections.Martin Liska1-2/+6
gold/ChangeLog: 2019-11-26 Martin Liska <mliska@suse.cz> * layout.cc (Layout::special_ordering_of_input_section): Add ".text.sorted". * output.cc: Special case ".text.sorted". * testsuite/section_sorting_name.cc: Cover also .text.sorted subsections. * testsuite/section_sorting_name.sh: Likewise. ld/ChangeLog: 2019-11-26 Martin Liska <mliska@suse.cz> * scripttempl/arclinux.sc: Add .text.sorted.* which is sorted by default. * scripttempl/elf.sc: Likewise. * scripttempl/elf64bpf.sc: Likewise. * scripttempl/nds32elf.sc: Likewise. * testsuite/ld-arm/arm-no-rel-plt.ld: Expect .text.sorted.* in the default linker script. * testsuite/ld-arm/fdpic-main.ld: Likewise. * testsuite/ld-arm/fdpic-shared.ld: Likewise.
2019-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2018-12-02gold: Get alignment of uncompressed section from ch_addralignH.J. Lu1-5/+6
The ELF compression header has a field (ch_addralign) that is set to the alignment of the uncompressed section. This way the section itself can have a different alignment than the decompressed section. Update decompress_input_section to get alignment of the decompressed section and use it when merging decompressed strings. PR binutils/23919 * merge.cc (Output_merge_string<Char_type>::do_add_input_section): Get addralign from decompressed_section_contents. * object.cc (build_compressed_section_map): Set info.addralign. (Object::decompressed_section_contents): Add a palign argument and store p->second.addralign in *palign if it isn't NULL. * object.h (Compressed_section_info): Add addralign. (section_is_compressed): Add a palign argument, default it to NULL, store p->second.addralign in *palign if it isn't NULL. (Object::decompressed_section_contents): Likewise. * output.cc (Output_section::add_input_section): Get addralign from section_is_compressed.
2018-04-02Fix problem where mixed section types can cause internal error during a -r link.Cary Coutant1-1/+2
During a -r (or --emit-relocs) link, if two sections had the same name but different section types, gold would put relocations for both sections into the same relocation section even though the data sections remained separate. For .eh_frame sections, when one section is PROGBITS and another is X86_64_UNWIND, we really should be using the UNWIND section type and combining the sections anyway. For other sections, we should be creating one relocation section for each output data section. gold/ PR gold/23016 * incremental.cc (can_incremental_update): Check for unwind section type. * layout.h (Layout::layout): Add sh_type parameter. * layout.cc (Layout::layout): Likewise. (Layout::layout_reloc): Create new output reloc section if data section does not already have one. (Layout::layout_eh_frame): Check for unwind section type. (Layout::make_eh_frame_section): Use unwind section type for .eh_frame and .eh_frame_hdr. * object.h (Sized_relobj_file::Shdr_write): New typedef. (Sized_relobj_file::layout_section): Add sh_type parameter. (Sized_relobj_file::Deferred_layout::Deferred_layout): Add sh_type parameter. * object.cc (Sized_relobj_file::check_eh_frame_flags): Check for unwind section type. (Sized_relobj_file::layout_section): Add sh_type parameter; pass it to Layout::layout. (Sized_relobj_file::do_layout): Make local copy of sh_type. Force .eh_frame sections to unwind section type. Pass sh_type to layout_section. (Sized_relobj_file<size, big_endian>::do_layout_deferred_sections): Pass sh_type to layout_section. * output.cc (Output_section::Output_section): Initialize reloc_section_. * output.h (Output_section::reloc_section): New method. (Output_section::set_reloc_section): New method. (Output_section::reloc_section_): New data member. * target.h (Target::unwind_section_type): New method. (Target::Target_info::unwind_section_type): New data member. * aarch64.cc (aarch64_info): Add unwind_section_type. * arm.cc (arm_info, arm_nacl_info): Likewise. * i386.cc (i386_info, i386_nacl_info, iamcu_info): Likewise. * mips.cc (mips_info, mips_nacl_info): Likewise. * powerpc.cc (powerpc_info): Likewise. * s390.cc (s390_info): Likewise. * sparc.cc (sparc_info): Likewise. * tilegx.cc (tilegx_info): Likewise. * x86_64.cc (x86_64_info, x86_64_nacl_info): Likewise. * testsuite/Makefile.am (pr23016_1, pr23016_2): New test cases. * testsuite/Makefile.in: Regenerate. * testsuite/testfile.cc: Add unwind_section_type. * testsuite/pr23016_1.sh: New test script. * testsuite/pr23016_1a.s: New source file. * testsuite/pr23016_1b.s: New source file. * testsuite/pr23016_2.sh: New test script. * testsuite/pr23016_2a.s: New source file. * testsuite/pr23016_2b.s: New source file.
2018-01-03Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2017-12-02Handle case where posix_fallocate is not supported for a filesystem.Cary Coutant1-3/+15
2017-12-02 Vladimir Kondratyev <vladimir@kondratyev.su> Cary Coutant <ccoutant@gmail.com> gold/ PR gold/22540 * output.cc (gold_fallocate): Trivial return for len == 0. Add fallback options when posix_fallocate and fallocate return not-supported errors.
2017-01-02Update year range in copyright notice of all files.Alan Modra1-1/+1
2016-12-21Make linker-created symbols relocatable where appropriate.Cary Coutant1-1/+1
Linker-created symbols like __ehdr_start, __etext, __edata, and end should be relocatable, not absolute. gold/ * output.cc (Output_segment::first_section): Return NULL if there are no sections in the segment. * output.h (Output_segment::first_section_load_address): Assert that first section is not NULL. * symtab.cc (Symbol_table::sized_write_globals): Attach linker-created segment-relative symbols to first section of the segment.
2016-12-11Fix problems with bss handling in linker scripts.Cary Coutant1-16/+49
PR 16711 noted that gold allocates file space for BSS sections when using a linker script. I've fixed that by rewriting set_section_addresses and set_section_list_addresses to track the file offset separate from the current virtual address, so that BSS sections do not move the file offset. Now, if a series of BSS sections come at the end of a segment, we do not allocate file space; but if a script forces them into the middle of a segment, we will still allocate file space (matching Gnu ld behavior). I've also added a warning when that happens. That exposed another problem where orphan .bss sections were sometimes placed in the middle of a segment. For example, if the script mentions the .got section, but both .data and .bss are orphans, gold would put both .data and .bss in front of .got. I've fixed that by ensuring that orphan BSS sections are always placed after all other allocated sections. It also exposed a problem where the SUBALIGN property is not handled properly. The ld manual clearly states that it should override input section alignment, whether greater or less than the given alignment, but gold would only increase an input section's alignment. Gold would also place the output section based on its original alignment before the SUBALIGN property took effect, leading to a misaligned output section (where the input section was properly aligned in memory, but was not aligned relative to the start of the section), in violation of the ELF/gABI spec. I've fixed that by making sure that the SUBALIGN property overrides the internal alignment of the input sections as well as the external alignment of the output section. This affected the behavior of script_test_2, which was written to expect a misaligned section. The net effect is, I think, improved compatibility with the BFD linker. There are still cases where orphan placement differs, but the differences should be rarer and less important. ALIGN and SUBALIGN behavior is closer, but still not an exact match -- I still found cases where ld would create a misaligned output section, and where gold will properly align it. gold/ PR gold/16711 * output.cc (Output_section::set_final_data_size): Calculate data size based on relative offset rather than file offset. (Output_segment::set_section_addresses): Track file offset separately from address offset. (Output_segment::set_section_list_addresses): Add pfoff parameter. Track file offset separately. Don't move file offset for BSS sections. * output.h (Output_segment::set_section_list_addresses): Add pfoff parameter. * script-sections.cc (Orphan_section_placement): Add PLACE_LAST_ALLOC. (Orphan_section_placement::Orphan_section_placement): Initialize it. (Orphan_section_placement::output_section_init): Track last allocated section. (Orphan_section_placement::find_place): Place BSS after last allocated section. (Output_section_element_input::set_section_addresses): Always override input section alignment when SUBALIGN is specified. (Output_section_definition::set_section_addresses): Override alignment of output section when SUBALIGN is specified. * testsuite/Makefile.am (script_test_15a, script_test_15b) (script_test_15c): New test cases. * testsuite/Makefile.in: Regenerate. * testsuite/script_test_2.cc: Adjust expected layout. * testsuite/script_test_15.c: New source file. * testsuite/script_test_15a.sh: New shell script. * testsuite/script_test_15a.t: New linker script. * testsuite/script_test_15b.sh: New shell script. * testsuite/script_test_15b.t: New linker script. * testsuite/script_test_15c.sh: New shell script. * testsuite/script_test_15c.t: New linker script.
2016-09-26[GOLD] warning fixesAlan Modra1-1/+1
* aarch64.cc (Target_aarch64::is_erratum_835769_sequence): Avoid compiler warning. * output.cc (Output_segment::set_section_addresses): Likewise.
2016-06-20Add support for MIPS .rld_map section.Vladimir Radosavljevic1-0/+21
Includes DT_MIPS_RLD_MAP and DT_MIPS_RLD_MAP_REL dynamic tags and __RLD_MAP symbol. 2016-06-20 Vladimir Radosavljevic <Vladimir.Radosavljevic@imgtec.com> elfcpp/ * elfcpp.h (DT_MIPS_RLD_MAP_REL): New enum constant. gold/ * mips.cc (Target_mips::Target_mips): Initialize rld_map_. (Target_mips::rld_map_): New data member. (Target_mips::do_finalize_sections): Add support for DT_MIPS_RLD_MAP and DT_MIPS_RLD_MAP_REL dynamic tags, .rld_map section, and __RLD_MAP symbol. (Target_mips::do_dynamic_tag_custom_value): Add support for DT_MIPS_RLD_MAP_REL dynamic tag. * output.cc (Output_data_dynamic::get_entry_offset): New method definition. * output.h (Output_data_dynamic::get_entry_offset): New method declaration.
2016-03-08Refactor Output_data_reloc_base::do_write for MIPS-specific relocs.Cary Coutant1-26/+15
This patch is a simple refactoring that will allow the MIPS backend to replace the Output_data_reloc_base::do_write() method without copying its entire implementation. I've moved the implementation of do_write() into a function template, which can be instantiated with a custom class to write the MIPS-specific relocation format. The custom class for MIPS needs access to the symbol index and address from Output_reloc, so I've included the part of Vlad's MIPS-64 patch that makes those accessor methods public. 2016-03-08 Cary Coutant <ccoutant@gmail.com> Vladimir Radosavljevic <vladimir.radosavljevic@imgtec.com> gold/ * output.cc (Output_reloc_writer): New type. (Output_data_reloc_base::do_write): Move implementation to template in output.h and replace with invocation of template. * output.h (Output_file): Move to top of file. (Output_reloc::get_symbol_index): Move to public interface. (Output_reloc::get_address): Likewise. (Output_data_reloc_base::do_write_generic): New function template.
2016-01-01Copyright update for binutilsAlan Modra1-1/+1
2015-12-03Take addend into account when making GOT entries for local symbols.Vladimir Radosavljevic1-1/+69
gold/ * object.cc (Sized_relobj::do_for_all_local_got_entries): Use Local_got_entry_key for searching in local_got_offsets_. * object.h (class Local_got_entry_key): New class. (Relobj::local_has_got_offset): New overloaded method. (Relobj::local_got_offset): Likewise. (Relobj::set_local_got_offset): Likewise. (Relobj::do_local_has_got_offset): Add addend argument. (Relobj::do_local_got_offset): Likewise. (Relobj::do_set_local_got_offset): Likewise. (Sized_relobj::do_local_has_got_offset): Add addend argument, and use Local_got_entry_key for searching through local_got_offsets_. (Sized_relobj::do_local_got_offset): Likewise. (Sized_relobj::do_set_local_got_offset): Likewise. (Sized_relobj::Local_got_offsets): Change type of the key from unsigned int to Local_got_entry_key, and add hash and equal_to. * output.cc (Got_entry::write): Take addend into account for calculating value of the local symbol for GOT. (Output_data_got::add_local): New definition of overloaded method. (Output_data_got::add_local_with_rel): Likewise. (Output_data_got::add_local_pair_with_rel): Likewise. * output.h (Output_data_got::add_local): New declaration of overloaded method.
2015-05-02Change Section_id type to use Relobj* instead of Object*.Cary Coutant1-1/+1
2015-04-29 Cary Coutant <cary@google.com> Rafael Ávila de Espíndola <rafael.espindola@gmail.com> gold/ * gc.h (Garbage_collection::is_section_garbage): Change Object* to Relobj*. (Garbage_collection::add_reference): Likewise. (Garbage_collection::gc_process_relocs): Likewise. Don't push object/shndx pair onto *secvec for dynamic objects. Don't follow relocations pointing to dynamic objects for GC. * icf.cc (Icf::find_identical_sections): Change Object* to Relobj*. (Icf::unfold_section): Likewise. (Icf::is_section_folded): Likewise. (Icf::get_folded_section): Likewise. * icf.h: (Icf::get_folded_section): Likewise. (Icf::unfold_section): Likewise. (Icf::is_section_folded): Likewise. (Icf::section_has_function_pointers): Likewise. (Icf::set_section_has_function_pointers): Likewise. * object.h (Section_id): Likewise. (Const_section_id): Likewise. * output.cc (Output_section::update_section_layout): Likewise. * output.h: (Output_section_lookup_maps::find_relaxed_input_section): Likewise. * plugin.cc (update_section_order): Likewise. (unique_segment_for_sections): Likewise. * powerpc.cc (Powerpc_relobj::add_reference): Likewise. (Target_powerpc::do_gc_add_reference): Likewise. (Target_powerpc::gc_process_relocs): Likewise. (Target_powerpc::do_gc_add_reference): Likewise. * symtab.cc (Symbol_table::is_section_folded): Likewise. (Symbol_table::gc_mark_symbol): Likewise. * symtab.h: (Symbol_table::is_section_folded): Likewise. * target.h: (Sized_target::gc_add_reference): Likewise. (Sized_target::do_gc_add_reference): Likewise.
2015-04-27If a range is missing, assume the input address is mapped.Rafael Ávila de Espíndola1-1/+3
When Output_section::is_input_address_mapped is called we have entries for all dropped ranges, but not for all ranges.
2015-03-23Remove is_merge_section_for.Rafael Ávila de Espíndola1-55/+13
Now that Input_merge_map has an Output_section_data, we can use it in implementing find_merge_section and replace the only use of is_merge_section_for with it.
2015-03-21Fix internal error with -z relro when .tbss is last relro section.Cary Coutant1-3/+2
When calculating the padding necessary to align the end of the relro segment to a page boundary, gold erroneously ignores the .tdata section when checking to see if there are any relro sections (so if .tdata is the only relro section, we fail to align the segment properly), and erroneously pads the cumulative size of the segment based on the alignment of .tbss. If there are no relro sections following .tbss, it then fails to note the padding needed at the end of .tdata. This patch fixes both problems. is_first_section_relro() will return true when it sees a .tdata section, and we do not align the cumulative size until after checking for the .tbss section. gold/ PR gold/14217 * output.cc (Output_segment::is_first_section_relro): Don't ignore .tdata section. (Output_segment::set_section_addresses): Don't align size of relro segment for .tbss.
2015-03-04Remove empty class Merge_map.Rafael Ávila de Espíndola1-1/+1
2015-03-02 Rafael Ávila de Espíndola <rafael.espindola@gmail.com> * ehframe.cc (Cie::set_output_offset): Pass in and use a Output_section_data instead of a Merge_map. (Eh_frame::Eh_frame): Don't initialize merge_map_. (Eh_frame::read_cie): Use add_merge_mapping instead of Merge_map::add_mapping. (Eh_frame::read_fde): Ditto. (Eh_frame::set_final_data_size): Use this instead of this->merge_map_. (Eh_frame::do_output_offset): Use merge_output_offset istead of merge_map_->get_output_offset. (Eh_frame::do_is_merge_section_for): Delete. * ehframe.h (Fde::add_mapping): Pass in and use a Output_section_data instead of a Merge_map. (Cie::set_output_offset): Pass in a Output_section_data instead of a Merge_map. (Eh_frame::do_is_merge_section_for): Delete. (Eh_frame::merge_map_): Delete. * merge.cc (Object_merge_map::get_or_make_input_merge_map): Pass in and use a Output_section_data instead of a Merge_map. (Object_merge_map::add_mapping): Ditto. (Object_merge_map::get_output_offset): Remove the merge_map argument. (Object_merge_map::is_merge_section_for): Pass in and use a Output_section_data instead of a Merge_map. (Merge_map): Delete. (Output_merge_base::do_output_offset): Use merge_output_offset instead of merge_map_.get_output_offset. (Output_merge_base::do_is_merge_section_for): Delete. (Output_merge_data::do_add_input_section): Use object->add_merge_mapping instead of add_mapping. (Output_merge_string<Char_type>::finalize_merged_data): Ditto. * merge.h (Merge_map): Delete forward declaration. (Object_merge_map::add_mapping): Pass in and use a Output_section_data instead of a Merge_map. (Object_merge_map::get_output_offset): Remove the merge_map argument. (Object_merge_map::is_merge_section_for): Pass in and use a Output_section_data instead of a Merge_map. (Input_merge_map::Object_merge_map::merge_map): Replace with output_data. (Object_merge_map::get_or_make_input_merge_map): Pass in and use a Output_section_data instead of a Merge_map. (Merge_map): Delete. (Output_merge_base::Output_merge_base): Don't initialize merge_map_. (Output_merge_base::do_is_merge_section_for): Delete. (Output_merge_base::add_mapping): Delete. (Output_merge_base::merge_map_): Delete. * object.cc (Relobj::initialize_input_to_output_map): New. (Relobj::initialize_input_to_output_map): New. (Relobj::merge_output_offset): New. (Relobj::is_merge_section_for): New. (Relobj::initialize_input_to_output_map): Instantiate for 32 and 64 bits. * object.h (Relobj::merge_map): Delete. (initialize_input_to_output_map): New. (set_merge_map): Delete. (add_merge_mapping): New. (merge_output_offset): New. (is_merge_section_for): New. * output.cc (Output_section::Input_section::is_merge_section_for): Use object->is_merge_section_for. * output.h (Output_section_data::is_merge_section_for): Delete. (Output_section_data::do_is_merge_section_for): Delete. * reloc.cc (Merged_symbol_value<size>::initialize_input_to_output_map): Use object->initialize_input_to_output_map. (Merged_symbol_value<size>::value_from_output_section): Use object->merge_output_offset.
2015-03-02Fix crash when processing merge section with entsize of 0.Cary Coutant1-0/+4
2015-02-04 Peter Collingbourne <pcc@google.com> Cary Coutant <ccoutant@google.com> gold/ * output.cc (Output_section::add_merge_input_section): Do not attempt to merge sections with an entsize of 0.
2015-01-252015-01-25 Cary Coutant <ccoutant@google.com>Cary Coutant1-7/+8
gold/ * output.cc (Output_segment::set_section_addresses): Fix calculation of size of relro segment.
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-09-02Fix problem with optimization of .eh_frame section and --sort-section option.Cary Coutant1-59/+14
When --sort-section=name is used, gold will sort the linker-generated contents of .eh_frame (after optimization) after the endcap provided by crtendS.o. This causes two problems: the .eh_frame_hdr section is generated assuming that the optimized .eh_frame contents will be placed at the very beginning of the section, and the endcap no longer appears at the end of the section. This patch fixes the first problem by adjusting FDE offsets to take into account the actual starting offset within the output section, and fixes the second problem by sorting linker-generated (Output_section_data) sections based on the name of the output section. gold/ PR gold/17005 * ehframe.cc (Fde::write): Add output_offset parameter. (Cie::write): Likewise. (Eh_frame::set_final_data_size): Account for offset within output section. (Eh_frame::do_sized_write): Likewise. * ehframe.h (Fde::write): Add output_offset parameter. (Cie::write): Likewise. * output.cc (Output_section::Input_section_sort_entry): Remove section_has_name_; add output_section_name parameter. Use output section name for non-input sections. (Output_section::Input_section_sort_entry::section_has_name): Remove. (Output_section::Input_section_sort_entry::section_has_name_): Remove. (Output_section::Input_section_sort_compare): Remove logic for sections without names. (Output_section::Input_section_sort_init_fini_compare): Likewise. (Output_section::Input_section_sort_section_prefix_special_ordering_compare): Likewise. (Output_section::Input_section_sort_section_name_compare): Likewise.
2014-03-10Allow target to add custom dynamic table entries.Cary Coutant1-0/+4
2014-03-10 Sasa Stankovic <Sasa.Stankovic@imgtec.com> gold/ * output.cc (Output_data_dynamic::Dynamic_entry::write): Get the value of DYNAMIC_CUSTOM dynamic entry. * output.h (Output_data_dynamic::add_custom): New function. (Dynamic_entry::Dynamic_entry): New constructor for DYNAMIC_CUSTOM dynamic entry. (enum Dynamic_entry::Classification): Add DYNAMIC_CUSTOM. * target.h (Target::dynamic_tag_custom_value): New function. (Target::do_dynamic_tag_custom_value): New function.
2014-03-05Update copyright yearsAlan Modra1-2/+1
2013-10-11gold/Roland McGrath1-2/+2
* target.h (Target::adjust_elf_header, Target::do_adjust_elf_header): Remove const from declaration. * target.cc (Sized_target::do_adjust_elf_header): Update definition. * sparc.cc (Target_sparc::do_adjust_elf_header): Likewise. * output.h (Output_file_header): Remove const from member target_ and corresponding constructor argument. * output.cc (Output_file_header::Output_file_header): Update prototype. (Output_file_header::do_sized_write): Use this->target_ in place of parameters()->target().
2013-08-27gold/Roland McGrath1-137/+173
* output.cc (Output_segment::set_section_addresses): Take new Target* argument. If target->isolate_execinstr() and the segment is executable and starts at a target->abi_pagesize() boundary, pad its end out to a target->abi_pagesize() boundary with code fill. * output.h (Output_segment::set_section_addresses): Update decl. * layout.h (Layout::check_output_data_for_reset_values): Take new argument RELAX_OUTPUTS. (Layout): New member relax_output_list_. (Layout::add_relax_output): New method. * layout.cc (Layout::Layout): Update constructor. (Layout::reset_relax_output): New method. (Layout::clean_up_after_relaxation): Call it. (Layout::prepare_for_relaxation): Update caller. (Layout::set_segment_offsets): Update callers of set_section_addresses. Call reset_relax_output before re-processing segments for isolate_execinstr case. (Layout::write_data): Handle relax_output_list_. (Layout::Relaxation_debug_check::check_output_data_for_reset_values): Take new argument RELAX_OUTPUTS. Assert it's an empty collection.
2013-05-302013-05-30 Alexander Ivchenko <alexander.ivchenko@intel.com>Cary Coutant1-5/+37
Sriraman Tallam <tmsriram@google.com> * options.h (sort_section): New option. * output.h (Input_section_sort_section_prefix_special_ordering_compare): Rename from Input_section_sort_section_name_special_ordering_compare. (Input_section_sort_section_name_compare): New struct. * output.cc (Output_section::Input_section_sort_section_name_compare:: operator()): New function. (Output_section::sort_attached_input_sections): Use new sort function for .text if --sort-section=name is specified. * layout.cc (Layout::make_output_section): Add sorting by name when --sort-section=name is specified. * testsuite/Makefile.am (text_section_grouping): Test option --sort-section=name. * testsuite/Makefile.in: Regenerate. * testsuite/section_sorting_name.cc: New file. * testsuite/section_sorting_name.sh: New file.
2013-04-292013-04-29 Alexander Ivchenko <alexander.ivchenko@intel.com>Cary Coutant1-5/+0
gold/ * output.cc (Output_section::add_merge_input_section): Allow to merge sections if the alignment is more than character size. * merge.h (Output_merge_string::Output_merge_string): Remove assert. * merge.cc (Output_merge_string<Char_type>::do_add_input_section): Count only not-null strings. Check the alignment of strings. * stringpool.h (Stringpool_template<Stringpool_char>::Stringpool_template): Add alignment as the argument. (Stringpool_template<Stringpool_char>::addralign_): New class member. * stringpool.cc (Stringpool_template<Stringpool_char>::new_key_offset): Align non-zero length strings according to the addralign_. (Stringpool_template<Stringpool_char>::set_string_offsets): Updating offsets according to the given alignment. * testsuite/Makefile.am (text_section_grouping): Test if string literals are getting merged. * testsuite/Makefile.in: Regenerate. * testsuite/merge_string_literals_1.c: New file. * testsuite/merge_string_literals_2.c: Ditto. * testsuite/merge_string_literals.sh: Ditto.
2013-01-24Default text reordering fix with a flag to turn it off.Sriraman Tallam1-13/+39
2013-01-24 Sriraman Tallam <tmsriram@google.com> * layout.cc (Layout::layout): Check for option text_reorder. (Layout::make_output_section): Ditto. * options.h (text_reorder): New option. * output.cc (Input_section_sort_compare): Remove special ordering of section names. (Output_section:: Input_section_sort_section_name_special_ordering_compare:: operator()): New function. (Output_section::sort_attached_input_sections): Use new sort function for .text. * output.h (Input_section_sort_section_name_special_ordering_compare): New struct. * testsuite/Makefile.am (text_section_grouping): Test option --no-text-reorder * testsuite/Makefile.in: Regenerate. * testsuite/text_section_grouping.sh: Check order of functions without default text reordering.
2013-01-07gold/Cary Coutant1-18/+8
PR gold/14993 * output.cc (Output_section::add_input_section): For incremental updates, don't track input sections that are allocated from patch space.
2012-12-21 * layout.cc (Layout::special_ordering_of_input_section): NewIan Lance Taylor1-73/+25
function. (Layout::layout): If input section requires special ordering, must sort input sections. (Layout::make_output_section): May sort .text input sections. (Layout::is_section_name_prefix_grouped): Remove. * layout.h (class Layout): Declare special_ordering_of_input_section. Don't declare is_section_name_prefix_grouped. * output.cc (Output_section::add_input_section): Revert last change. (Output_section::Input_section_sort::match_file_name): Don't crash if called on output section data. (Output_section::Input_section_sort_compare): Sort based on special ordering. (Output_section::Input_section_sort_section_order_index_compare): Revert last patch. (Output_section::sort_attached_input_sections): Likewise.
2012-12-19Group text sections with prefixes .text.unlikely,.text.hot and .text.startupSriraman Tallam1-7/+72
by default. 2012-12-18 Sriraman Tallam <tmsriram@google.com> * layout.cc (Layout::is_section_name_prefix_grouped): New function. * layout.h (Layout::is_section_name_prefix_grouped): New function. * output.cc (Output_section::add_input_section): Check if section name contains special prefix. Keep input sections to sort such sections. (Output_section::Input_section_sort_section_order_index_compare ::operator()): Group sections according to prefixes. * (Output_section::sort_attached_input_sections): Add condition to Input_section_entry constructor call. * testsuite/Makefile.am (text_section_grouping): New test. * testsuite/Makefile.in: Regenerate. * testsuite/text_section_grouping.cc: New file. * testsuite/text_section_grouping.sh: New file.
2012-12-03 * layout.h (Layout::get_executable_sections): Declare.Alan Modra1-5/+7
* layout.cc (Layout::get_executable_sections): New function. * arm.cc (Target_arm::group_sections): Use it. (Arm_output_section::group_sections): Delete now redundant test. * output.cc (Output_reloc::Output_reloc): Add is_relative. param to handle relative relocs. * output.h (Output_reloc::Output_reloc <absolute reloc>): Likewise. (Output_data_reloc::add_absolute): Adjust. (Output_data_reloc::add_relative): New function. (Output_data::reset_data_size): New function. (Output_relaxed_input_section::set_relobj, set_shndx): New functions. (Output_section::set_addralign): New function. (Output_section::checkpoint_set_addralign): New function. (Output_section::clear_section_offsets_need_adjustment): New function. (Output_section::input_sections): Make public. * powerpc.cc (class Output_data_brlt_powerpc): New. (class Stub_table, class Stub_control): New. (Powerpc_relobj::has14_, set_has_14bit_branch, has_14bit_branch, stub_table_, set_stub_table, stub_table): New vectors and accessor functions. (Target_powerpc::do_may_relax, do_relax, push_branch, new_stub_table, stub_tables, brlt_section, group_sections, add_branch_lookup_table, find_branch_lookup_table, write_branch_lookup_table, make_brlt_section): New functions. (Target_powerpc::struct Sort_sections, class Branch_info): New. (Target_powerpc::brlt_section_, stub_tables_, branch_lookup_table_, branch_info_): New vars. (Target_powerpc::make_plt_entry, make_local_ifunc_plt_entry): Don't make call stubs here. (Output_data_glink): Remove all call stub handling from this class. (Target_powerpc::Scan::local, global): Save interesting branch relocs and relocs for ifunc. Adjust calls to plt entry functions. (Target_powerpc::do_finalize_sections): Only make reg save/restore functions on final link. (Target_powerpc::Relocate::relocate): Adjust lookup of call stubs. Handle long branch destinations too. (Target_powerpc::do_dynsym_value, do_plt_address_for_global, do_plt_address_for_local): Adjust lookup of plt call stubs.
2012-11-01gold/Roland McGrath1-12/+12
* dwarf_reader.cc (Sized_elf_reloc_mapper::symbol_section): Cast SYMNDX to off_t before comparing it to this->data_size(). * output.cc (Output_symtab_xindex::endian_do_write): Likewise. * incremental.cc (Output_section_incremental_inputs::do_write): Cast GLOBAL_SYM_COUNT to off_t before comparing it to SYMTAB_SIZE.
2012-10-05 * i386.cc (Output_data_plt_i386::address_for_global,Alan Modra1-19/+6
address_for_local): Add plt offset to returned value. Adjust uses. * sparc.cc (Output_data_plt_sparc::address_for_global, address_for_local): Likewise. * tilegx.cc (Output_data_plt_tilegx::address_for_global, address_for_local): Likewise. * x86_64.cc (Output_data_plt_x86_64::address_for_global, address_for_local): Likewise. * target.h (Target::plt_address_for_global, plt_address_for_local): Update comment. * output.cc (Output_reloc::symbol_value): Don't add plt offset here. (Output_data_got::Got_entry::write): Nor here. * output.h: Comment fix.
2012-09-12 PR gold/14570Ian Lance Taylor1-60/+78
* output.cc: Rename Output_data_got template parameter from size to got_size for all functions. Compile all variants of Output_data_got. (Output_data_got::Got_entry::write): Correct use of size for symbol value. Use local_is_tls rather than casting to Sized_relobj_file. * object.h (class Object): Add local_is_tls and do_local_is_tls. (class Sized_relobj_file): Add do_local_is_tls. * incremental.h (class Sized_relobj_incr): Add do_local_is_tls.
2012-09-10 PR gold/14566Alan Modra1-3/+3
* layout.cc (Layout::set_segment_offsets): When using common-page-size alignment, ensure we are on a new max-page-size page. * output.cc (Output_segment::set_section_addresses): Use abi_pagesize, not common_pagesize for relro boundary. (Output_segment::set_offset): Likewise.
2012-09-10 * output.h (Output_data_got::add_global_tls, add_local_tls,Alan Modra1-21/+49
add_local_tls_pair): New functions. (Output_data_got::add_local_pair_with_rel): Remove second reloc param. Expand comment. (Output_data_got::Got_entry): Rename use_plt_offset_ to use_plt_or_tls_offset_, similarly for constructor param. (Output_data_got::Got_entry::write): Add got_index param. * output.cc (Output_data_got::add_global_tls, add_local_tls, add_local_tls_pair): New functions. (Output_data_got::Got_entry::write): Handle tls symbols with use_plt_or_tls_offset_ set specially. (Output_data_got::add_local_pair_with_rel): Only one reloc. (Output_data_got::do_write): Replace iterator with index, pass index to entry write function. * target.h (Target::tls_offset_for_local, tls_offset_for_global, do_tls_offset_for_local, do_tls_offset_for_global): New functions. * arm.cc (Target_arm::Scan::local): Update add_local_pair_with_rel call. * i386.cc (Target_i386::Scan::local): Likewise. * sparc.cc (Target_sparc::Scan::local): Likewise. * x86_64.cc (Target_x86_64::Scan::local): Likewise. * powerpc.cc (Target_powerpc::do_tls_offset_for_local, do_tls_offset_for_global): New functions. (Target_powerpc::Scan::local): Correct TLS relocations and got entry values. (Target_powerpc::Scan::global): Don't emit unnecessary dynamic relocations on TLS GOT entries.
2012-09-05 * object.h (Sized_relobj_file::emit_relocs): Delete.Alan Modra1-6/+4
(Sized_relobj_file::emit_relocs_reltype): Delete. * reloc.cc (Sized_relobj_file::do_relocate_sections): Call target relocate_relocs for --emit-relocs. (Sized_relobj_file::emit_relocs, emit_relocs_reltype): Delete. * output.h: Update comment. (Output_segment::first_section): New function. (Output_segment::first_section_load_address): Use first_section. * output.cc (Output_segment::first_section): New function extracted.. (Output_segment::first_section_load_address): ..from here. Delete. * target-reloc.h (relocate_for_relocatable): Rename to relocate_relocs. * target.h (Sized_target::relocate_for_relocatable): Likewise. * arm.cc (Target_arm::relocate_for_relocatable): Likewise, and adjust call to target.h function. * i386.cc (Target_i386): Likewise. * sparc.cc (Target_sparc): Likewise. * x86_64.cc (Target_x86_64): Likewise. * powerpc.cc (Target_powerpc): Likewise. (Target_powerpc::Scan::local, global): Handle R_POWERPC_TLS. Ensure first tls section has section symbol for optimised local dynamic output relocs. (Target_powerpc::Relocate::relocate): Correct local dynamic value. (Target_powerpc::relocate_relocs): Adjust relocs emitted for optimised tls code. * testsuite/testfile.cc (Target_test::relocate_for_relocatable): Rename to relocate_relocs. Update error message.
2012-08-30 * output.h (Output_reloc::Output_reloc <output section>): AddAlan Modra1-6/+12
is_relative param. Adjust calls. (Output_reloc::add_output_section_relative): New functions. * output.cc (Output_reloc::Output_reloc <output section>): Handle is_relative. (Output_reloc::symbol_value): Handle SECTION_CODE.
2012-08-24Patch adds support to allow plugins to map selected subset of sections to uniqueSriraman Tallam1-1/+5
segments. 2012-08-24 Sriraman Tallam <tmsriram@google.com> * gold.cc (queue_middle_tasks): Call layout again when unique segments for sections is desired. * layout.cc (Layout::Layout): Initialize new members. (Layout::get_output_section_flags): New function. (Layout::choose_output_section): Call get_output_section_flags. (Layout::layout): Make output section for mapping to a unique segment. (Layout::insert_section_segment_map): New function. (Layout::attach_allocated_section_to_segment): Make unique segment for output sections marked so. (Layout::segment_precedes): Check for unique segments when sorting. * layout.h (Layout::Unique_segment_info): New struct. (Layout::Section_segment_map): New typedef. (Layout::insert_section_segment_map): New function. (Layout::get_output_section_flags): New function. (Layout::is_unique_segment_for_sections_specified): New function. (Layout::set_unique_segment_for_sections_specified): New function. (Layout::unique_segment_for_sections_specified_): New member. (Layout::section_segment_map_): New member. * object.cc (Sized_relobj_file<size, big_endian>::do_layout): Rename is_gc_pass_one to is_pass_one. Rename is_gc_pass_two to is_pass_two. Rename is_gc_or_icf to is_two_pass. Check for which pass based on whether symbols data is present. Make it two pass when unique segments for sections is desired. * output.cc (Output_section::Output_section): Initialize new members. * output.h (Output_section::is_unique_segment): New function. (Output_section::set_is_unique_segment): New function. (Output_section::is_unique_segment_): New member. (Output_section::extra_segment_flags): New function. (Output_section::set_extra_segment_flags): New function. (Output_section::extra_segment_flags_): New member. (Output_section::segment_alignment): New function. (Output_section::set_segment_alignment): New function. (Output_section::segment_alignment_): New member. (Output_segment::Output_segment): Initialize is_unique_segment_. (Output_segment::is_unique_segment): New function. (Output_segment::set_is_unique_segment): New function. (Output_segment::is_unique_segment_): New member. * plugin.cc (allow_unique_segment_for_sections): New function. (unique_segment_for_sections): New function. (Plugin::load): Add new functions to transfer vector. * Makefile.am (plugin_final_layout.readelf.stdout): Add readelf output. * Makefile.in: Regenerate. * testsuite/plugin_final_layout.sh: Check if unique segment functionality works. * testsuite/plugin_section_order.c (onload): Check if new interfaces are available. (allow_unique_segment_for_sections): New global. (unique_segment_for_sections): New global. (claim_file_hook): Call allow_unique_segment_for_sections. (all_symbols_read_hook): Call unique_segment_for_sections. 2012-08-24 Sriraman Tallam <tmsriram@google.com> * plugin-api.h (ld_plugin_allow_unique_segment_for_sections): New interface. (ld_plugin_unique_segment_for_sections): New interface. (LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val. (LDPT_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val. (tv_allow_unique_segment_for_sections): New member. (tv_unique_segment_for_sections): New member.
2012-08-11 * object.h (Sized_relobj_file::find_shdr): New function.Alan Modra1-0/+12
(Sized_relobj_file::find_special_sections): New function. * object.cc (Sized_relobj_file::find_shdr): New function. (Sized_relobj_file::find_eh_frame): Use find_shdr. (Sized_relobj_file::find_special_sections): New function, split out.. (Sized_relobj_file::do_read_symbols): ..from here. * output.h (Output_data_got::replace_constant): New function. (Output_data_got::num_entries): New function. (Output_data_got::last_got_offset,set_got_size): Use num_entries. (Output_data_got::got_offset): Protected rather than private. (Output_data_got::replace_got_entry): New function. * output.cc (Output_data_got::replace_got_entry): New function. * powerpc.cc (class Powerpc_relobj): New. (class Powerpc_relocate_functions): Delete all psymval variants or convert to value,addend type. Delete pcrela, pcrela_unaligned. Implement _ha functions using corresponding _hi function. (Powerpc_relobj::find_special_sections): New function. (Target_powerpc::do_make_elf_object): New function. (class Output_data_got_powerpc): New. (class Output_data_glink): New. (class Powerpc_scan_relocatable_reloc): New. Many more changes througout file.
2012-06-06gold/Cary Coutant1-16/+24
* configure.ac: Add check for fallocate. * configure: Regenerate. * config.in: Regenerate. * options.h (class General_options): Add --mmap-output-file and --posix-fallocate options. * output.cc: (posix_fallocate): Remove; replace with... (gold_fallocate): New function. (Output_file::map_no_anonymous): Call gold_fallocate. (Output_file::map): Check --mmap-output-file option.
2012-04-17gold: Allow use_plt_offset to be specified for global relocations.David S. Miller1-5/+14
gold/ * output.h (Output_reloc): Allow use_plt_offset for global relocs too. (class Output_data_reloc): Adjust calls to Output_reloc_type. (Output_data_reloc::add_global_relative): (RELA only) Add use_plt_offset. * output.cc (Output_reloc::Output_reloc): Add use_plt_offset flag for global relocs too. (Output_reloc::symbol_value): Respect use_plt_offset_ for global symbols. * powerpc.cc (Target_powerpc::Scan::global): Adjust add_global_relative calls. * sparc.cc (Target_sparc::Scan::global): Likewise. * x86_64.cc (Target_x86_64::Scan::global): Likewise.
2012-01-04 * gold/incremental.cc (Sized_incremental_binary::do_process_got_plt):Cary Coutant1-2/+2
Use abstract base class for GOT. * gold/output.h (class Output_data_got_base): New abstract base class. (class Output_data_got): Derive from new base class, adjust ctors. (Output_data_got::reserve_slot): Make virtual; rename to do_reserve_slot; Adjust callers. * gold/target.h (Sized_target::init_got_plt_for_update): Return pointer to abstract base class. * gold/x86_64.cc (Target_x86_64::init_got_plt_for_update): Likewise.
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