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2017-03-15Mips: Fix TLS LDM GOT entry.Vladimir Radosavljevic2-7/+16
gold/ * mips.cc (Mips_got_entry::hash()): Shift addend to reduce possibility of collisions. (Mips_got_entry::equals): Fix case for GOT_TLS_LDM entries.
2017-03-15Mips: Omit empty objects for merging processor-specific data.Vladimir Radosavljevic2-40/+69
gold/ * mips.cc (Mips_relobj::merge_processor_specific_data_): New data member. (Mips_relobj::merge_processor_specific_data): New method. (Mips_relobj::do_read_symbols): Set merge_processor_specific_data_ to false, only if the input file is a binary or if object has no contents except the section name string table and an empty symbol table with the undefined symbol. (Target_mips::do_finalize_sections): Refactor. Skip empty object files for merging processor-specific data.
2017-03-15Mips: Add support for resolving multiple consecutive relocations.Vladimir Radosavljevic2-100/+171
gold/ * mips.cc (Target_mips::Relocate::calculated_value_): New data member. (Target_mips::Relocate::calculate_only_): Likewise. (Target_mips::Relocate::relocate): Handle multiple consecutive relocations with the same offset.
2017-03-15Remove redundant checks for relocatable link (MIPS).Vladimir Radosavljevic2-24/+25
gold/ * mips.cc (Target_mips::Relocate::relocate): Remove redundant checks for relocatable link. (Mips_relocate_functions::reljalr): Likewise.
2017-03-15Add support for .MIPS.options section.Vladimir Radosavljevic2-0/+83
gold/ * mips.cc (class Mips_output_section_options): New class. (Target_mips::do_make_output_section): New method.
2017-03-15Improve relocation overflow errors on MIPS.Vladimir Radosavljevic2-12/+29
gold/ * mips.cc (Mips_relocate_functions::rel26): Don't print relocation overflow error message. (Target_mips::relocate_special_relocatable): Improve relocation overflow error message. (Target_mips::Relocate::relocate): Likewise.
2017-03-15Correct the definition of _gp and _GLOBAL_OFFSET_TABLE_ symbols for MIPS.Vladimir Radosavljevic2-55/+35
gold/ * mips.cc (symbol_refs_local): Return false if a symbol is from a dynamic object. (Target_mips::got_section): Make _GLOBAL_OFFSET_TABLE_ STV_HIDDEN. (Target_mips::set_gp): Refactor. Make _gp STT_NOTYPE and STB_LOCAL. (Target_mips::do_finalize_sections): Set _gp after all the checks for creating .got are done. (Target_mips::Scan::global): Remove unused code.
2017-02-22PowerPC ld segfault on script discarding dynamic sectionsAlan Modra2-5/+15
bfd/ * elf64-ppc.c (ppc64_elf_finish_dynamic_sections): Don't segfault on .got or .plt output section being discarded by script. * elf32-ppc.c (ppc_elf_finish_dynamic_sections): Likewise. Move vxworks splt temp. gold/ * powerpc.cc (Target_powerpc::make_iplt_section): Check that output_section exists before attempting add_output_section_data. (Target_powerpc::make_brlt_section): Likewise.
2017-02-15Don't give an internal error for unsupported relocations.Vladimir Radosavljevic2-11/+15
gold/ * mips.cc (Target_mips::Scan::get_reference_flags): Remove gold_unreachable from default case.
2017-02-15Add support for R_MIPS_HIGHER/HIGHEST, R_MICROMIPS_HIGHER/HIGHEST relocations.Vladimir Radosavljevic2-0/+87
2017-02-15 Vladimir Radosavljevic <Vladimir.Radosavljevic@imgtec.com> PR gold/21111 * mips.cc (Mips_relocate_functions::relhigher): New method. (Mips_relocate_functions::relhighest): Likewise. (mips_get_size_for_reloc): Add support for relocs: R_MIPS_HIGHER and R_MIPS_HIGHEST. (Target_mips::Scan::local): Add support for relocs: R_MIPS_HIGHER, R_MIPS_HIGHEST, R_MICROMIPS_HIGHER and R_MICROMIPS_HIGHEST. (Target_mips::Scan::global): Likewise. (Target_mips::Scan::get_reference_flags): Likewise. (Target_mips::Relocate::relocate): Call static methods for resolving HIGHER and HIGHEST relocations.
2017-02-15Improved support for --icf=safe when used with -pie.Rahul Chaudhry6-17/+191
gold/ * x86_64.cc (Target_x86_64::do_can_check_for_function_pointers): Return true even when building pie binaries. (Target_x86_64::possible_function_pointer_reloc): Check opcode for R_X86_64_PC32 relocations. (Target_x86_64::local_reloc_may_be_function_pointer): Pass extra arguments to local_reloc_may_be_function_pointer. (Target_x86_64::global_reloc_may_be_function_pointer): Likewise. * gc.h (gc_process_relocs): Add check for STT_FUNC. * testsuite/Makefile.am (icf_safe_pie_test): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/icf_safe_pie_test.sh: New shell script.
2017-02-03[GOLD] PowerPC64 TOC indirect to TOC relative segfaultAlan Modra2-0/+11
* powerpc.cc (Powerpc_relobj::make_toc_relative): Don't crash when no .toc section exists.
2017-01-31Don't allow mov-to-lea optimization for __ehdr_start.Cary Coutant2-3/+15
gold/ PR gold/21090 * x86_64.cc (Target_x86_64::can_convert_mov_to_lea): Add check for predefined symbol. (Target_x86_64::Relocate::relocate): Fix formatting.
2017-01-23Add -e to test scripts where necessary.Rahul Chaudhry4-4/+14
gold/ * testsuite/icf_safe_so_test.sh: Use "set -e". * testsuite/icf_safe_test.sh: Likewise. * testsuite/icf_test.sh: Likewise.
2017-01-23Make the sh_info field of .rel.plt point to .plt (MIPS).Vladimir Radosavljevic2-1/+12
gold/ * mips.cc (Mips_output_data_plt::rel_plt): Remove const from return type. (Target_mips::make_plt_entry): Make the sh_info field of .rel.plt point to .plt.
2017-01-23Fix MIPS GOT when global symbols are forced to local visibility.Vladimir Radosavljevic2-2/+11
gold/ PR gold/21054 * mips.cc (Mips_got_info::record_global_got_symbol): Don't add symbol to the dynamic symbol table if it is forced to local visibility. (Target_mips::do_finalize_sections): Don't add __RLD_MAP symbol to the dynamic symbol table if it is forced to local visibility.
2017-01-20Fix problem in aarch64 gold sources uncovered by Coverty - using sizeof on a ↵Nick Clifton2-2/+13
pointer instead of an array. * aarch64.cc (Stub_template_repertoire): Change ST_E_835769_INSNS from a pointer to an array.
2017-01-13Gold: Fix build with GCC 4.2H.J. Lu2-1/+7
PR gold/21040 * powerpc.cc (Powerpc_relobj<size, big_endian>::make_toc_relative): Cast 0x80008000 to uint64_t.
2017-01-12Fix incorrect byte counts.Cary Coutant2-3/+7
gold/ * object.cc (Sized_relobj_file): Fix byte counts for calls to memmem.
2017-01-11Fix more compile errors with GCC 4.2.Cary Coutant2-12/+22
gold/ PR gold/21040 * x86_64.cc (Output_data_plt_x86_64_bnd::do_fill_first_plt_entry): Remove unnecessary 'typename' keyword. (Output_data_plt_x86_64_bnd::do_fill_plt_entry): Likewise. (Output_data_plt_x86_64_bnd::fill_aplt_entry): Likewise. (Output_data_plt_x86_64_bnd::do_fill_tlsdesc_entry): Likewise. (Output_data_plt_x86_64_bnd::do_write): Likewise.
2017-01-11Fix compile errors with GCC 4.2.Cary Coutant3-13/+30
gold/ PR gold/21040 * x86_64.cc (Output_data_plt_x86_64_bnd::do_fill_first_plt_entry): Remove unnecessary 'typename' keyword. (Output_data_plt_x86_64_bnd::do_fill_plt_entry): Likewise. (Output_data_plt_x86_64_bnd::do_fill_tlsdesc_entry): Likewise. (Output_data_plt_x86_64_bnd::fill_aplt_entry): Likewise. * testsuite/copy_test_relro_1.cc (p, b, c, q): Add separate extern declarations.
2017-01-11Fix test cases to work for i386.Cary Coutant5-7/+15
gold/ PR gold/21039 * testsuite/script_test_13.sh: Adjust patterns to work for i386. * testsuite/script_test_15a.sh: Likewise. * testsuite/script_test_15b.sh: Likewise. * testsuite/script_test_15c.sh: Likewise.
2017-01-11[GOLD] PowerPC64 TOC indirect to TOC relative code editingAlan Modra2-44/+537
Doesn't yet trim off the unused TOC entries. * powerpc.cc (class Powerpc_copy_relocs): New. (Powerpc_copy_relocs::emit): New function. (Powerpc_relobj::relatoc_, toc_, no_toc_opt_): New variables. (Powerpc_relobj::toc_shndx, set_no_toc_opt, no_toc_opt): New inlines. (Powerpc_relobj::do_relocate_sections): New function. (Powerpc_relobj::make_toc_relative): Likewise. (Powerpc_relobj::do_find_special_sections): Stash away .rela.toc and .toc too. (ok_lo_toc_insn): Move earlier, and handle more insns. (Target_powerpc::Scan::local): If optimizing toc accesses, set no_toc_opt for entries we can't edit. Check insn validity. Emit "toc optimization is not supported" warning, downgraded from error. (Target_powerpc::Scan::global): Likewise. (Target_powerpc::Relocate::relocate): Edit TOC indirect code to TOC relative. Don't emit "toc optimization is not supported" error here.
2017-01-10Refactor Sized_relobj_file::do_relocate_sections.Cary Coutant5-9/+93
gold/ * aarch64.cc (AArch64_relobj::do_relocate_sections): Call Sized_relobj_file::relocate_section_range(). * arm.cc (Arm_relobj::do_relocate_sections): Likewise. * object.h (Sized_relobj_file::relocate_section_range): New method. * reloc.cc (Sized_relobj_file::do_relocate_sections): Move implementation... (Sized_relobj_file::relocate_section_range): ...to new method.
2017-01-10[GOLD] Fix tests for powerpc64Alan Modra4-10/+54
PowerPC64 defines .TOC. rather than _GLOBAL_OFFSET_TABLE_, and what's more, doesn't define it at all unless referenced. For ELFv1 ABI the symbol isn't normally referenced, so modify the test to accept .TOC. as a variant of _GLOBAL_OFFSET_TABLE_ and 0 or 1 occurrences. copy_test_relro as written doesn't need copy relocs on PowerPC64. PowerPC64 is always PIC. So, modify copy_test_relro to test that the existing vars are in fact read-only directly by deliberately causing a sigsegv, and add another couple of vars that do cause copy relocs even when PIC. * testsuite/ver_test_8.sh: Accept .TOC. in lieu of _GLOBAL_OFFSET_TABLE_. Allow zero count. * testsuite/copy_test_relro_1.cc (c, q): New vars. * testsuite/copy_test_relro.cc: Rewrite to test read-only status of variables directly. Reference new vars in read-only data.
2017-01-10[GOLD] Add --secure-plt option for ppc32Alan Modra3-0/+48
Added just to accept, and ignore. gcc since 2015-10-21, when configured with --enable-secureplt passes this option to the linker. As powerpc gold cannot link --bss-plt code successfully, gold needs to accept the option or the gcc specs file needs to be changed. The patch also make gold detect --bss-plt code and error out rather than producing a binary that crashes. * options.h: Add --secure-plt option. * powerpc.cc (Target_powerpc::Scan::local): Detect and error on -fPIC -mbss-plt code. (Target_powerpc::Scan::global): Likewise.
2017-01-09[GOLD] Set sh_info of .rela.plt for powerpcAlan Modra2-0/+8
* powerpc.cc (Target_powerpc::make_plt_section): Point sh_info of ".rela.plt" at ".plt".
2017-01-07[GOLD] powerpc.cc tidiesAlan Modra2-38/+37
Plus some paranoia in symval_for_branch. We shouldn't get there with dynamic symbols, but if we ever did the static_cast to Powerpc_relobj would be wrong. * powerpc.cc: Use shorter equivalent elfcpp typedef for Reltype and reloc_size throughout. (Target_powerpc::symval_for_branch): Exclude dynamic symbols. (Target_powerpc::Scan::local): Use local var r_sym. (Target_powerpc::Scan::global: Likewise. (Target_powerpc::Relocate::relocate): Delete shadowing r_sym.
2017-01-02Update year range in copyright notice of all files.Alan Modra450-454/+457
2017-01-02ChangeLog rotationAlan Modra2-1656/+1670
2016-12-28Fix comment typoAndreas Schwab2-36/+41
* copy-relocs.h: Fix comment typo.
2016-12-28Add explicit instantiations for build_compressed_section_map().Cary Coutant2-0/+37
gold/ PR gold/20996 * object.cc (build_compressed_section_map): Add explicit instantiations.
2016-12-28Fix last ChangeLog entry.Cary Coutant1-1/+1
* copy-relocs.cc (Copy_relocs::make_copy_reloc): Use .data.rel.ro for read-only data when linking with -z relro.
2016-12-27Place copy relocations in .dynbss when target is read-only.Cary Coutant7-16/+161
gold/ PR ld/20995 * copy-relocs.cc (Copy_relocs::make_copy_reloc): Use .dynbss for read-only data when linking with -z relro. * copy-relocs.h (Copy_relocs::dynrelro_): New data member. * testsuite/Makefile.am (copy_test_relro): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/copy_test_relro.cc: New source file. * testsuite/copy_test_relro_1.cc: New source file.
2016-12-23Bump gold version number to 1.14.Cary Coutant3-1/+24
* NEWS: Add new features in 1.14. * version.cc (version_string): Bump to 1.14.
2016-12-22Add -z bndplt support (for Intel MPX).Cary Coutant11-25/+788
gold/ PR gold/17643 * options.h (-z bndplt): New option. * x86_64.cc (Output_data_plt_x86_64::regular_count): New method. (Output_data_plt_x86_64::address_for_global): Move implementation into virtual method. (Output_data_plt_x86_64::address_for_local): Likewise. (Output_data_plt_x86_64::got): New method. (Output_data_plt_x86_64::got_plt): New method. (Output_data_plt_x86_64::got_irelative): New method. (Output_data_plt_x86_64::do_address_for_global): New virtual method. (Output_data_plt_x86_64::do_address_for_local): New virtual method. (class Output_data_plt_x86_64_bnd): New class. (Target_x86_64::do_make_data_plt): Move out of line and specialize for each size (both overloads). (Output_data_plt_x86_64::set_final_data_size): Cosmetic changes. * testsuite/Makefile.am (bnd_plt_1): New test case. (bnd_ifunc_1): New test case. (bnd_ifunc_2): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/bnd_ifunc_1.s: New source file. * testsuite/bnd_ifunc_1.sh: New shell script. * testsuite/bnd_ifunc_2.s: New source file. * testsuite/bnd_ifunc_2.sh: New shell script. * testsuite/bnd_plt_1.s: New source file. * testsuite/bnd_plt_1.sh: New shell script.
2016-12-22Fix placement of forced local symbols in the dynamic symbol table.Cary Coutant8-97/+220
Gold was not placing forced-local symbols (e.g., hidden visibility) at the front of the dynamic symbol table, or including them in the count of local symbols recorded in the .dynsym section's sh_info field. gold/ * layout.cc (Layout::finalize): Track count of forced-local symbols in .dynsym. (Layout::create_symtab_sections): Add local_dynamic_count parameter; use that instead of sh_info value. (Layout::create_dynamic_symtab): Add pforced_local_dynamic_count parameter; pass it to Symtab::set_dynsym_indexes(). Include forced locals in sh_info value. Pass index of first real global to Dynobj::create_gnu_hash_table() and Dynobj::create_elf_hash_table(). * layout.h (Layout::create_symtab_sections): Add local_dynamic_count parameter. (Layout::create_dynamic_symtab): Add pforced_local_dynamic_count parameter. * symtab.cc (Symbol_table::set_dynsym_indexes): Add pforced_local_count parameter. Process forced-local symbols first and return the count. (Symbol_table::finalize): Update comments. * symtab.h (Symbol_table::set_dynsym_indexes): Add pforced_local_count parameter. (Symbol_table::first_dynamic_global_index_): Update comment. (Symbol_table::dynamic_count_): Update comment. * testsuite/Makefile.am (ifuncmod1.sh): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/ifuncmod1.sh: New shell script.
2016-12-22Fix problem where version script causes predefined hidden symbol to be ↵Cary Coutant6-26/+90
defined twice. When creating a predefined hidden symbol like _GLOBAL_OFFSET_TABLE_, gold was incorrectly letting a version script add a version to the symbol, resulting in two copies of the symbol, both STB_LOCAL, but one of which was grouped in the globals part of the symbol table. gold/ * symtab.cc (Symbol_table::define_special_symbol): Add is_forced_local parameter; if set, do not check version script. (Symbol_table::do_define_in_output_data): Pass is_forced_local for STB_LOCAL predefined symbols. (Symbol_table::do_define_in_output_segment): Likewise. (Symbol_table::do_define_in_output_segment): Likewise. (Symbol_table::do_define_as_constant): Likewise. * symtab.h (Symbol_table::define_special_symbol): Add is_forced_local parameter. Adjust all callers. * testsuite/Makefile.am (ver_test_8.sh): New test case. * testsuite/Makefile.in: Regenerate. * ver_test_8.sh: New test script.
2016-12-21Make linker-created symbols relocatable where appropriate.Cary Coutant4-2/+19
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.
2016-12-21Remove high bit set charactersAlan Modra2-4/+8
gas/ * doc/c-lm32.texi: Fix chars with high bit set. * testsuite/gas/bfin/vector2.s: Likewise. gold/ * arm.cc: Fix comment chars with high bit set. include/ * coff/pe.h: Fix comment chars with high bit set. * opcode/xgate.h: Likewise. ld/ * testsuite/ld-scripts/sysroot-prefix.exp: Fix chars with high bit set.
2016-12-20Update testsuite Makefile with missing dependencies.Cary Coutant3-66/+72
2016-12-20 Cary Coutant <ccoutant@gmail.com> gold/ * testsuite/Makefile.am: Add missing dependencies on gcctestdir/ld or ../ld-new. * testsuite/Makefile.in: Regenerate.
2016-12-19Fix read-beyond-end-of-buffer error in script parsing.Cary Coutant2-14/+26
2016-12-19 Cary Coutant <ccoutant@gmail.com> gold/ PR gold/20949 * script.cc (Lex::get_token): Don't look ahead past NUL characters.
2016-12-19Fix problem where linker does not place .note sections according to script.Cary Coutant5-30/+61
gold/ PR gold/14676 PR gold/20983 * layout.h (Layout::choose_output_section): Add match_input_spec parameter. Adjust all callers. * layout.cc (Layout::choose_output_section): Likewise. Pass match_input_spec to Script_sections::output_section_name(). (Layout::create_note): Pass true for match_input_spec. * script-sections.h (Script_sections::output_section_name): Add match_input_spec parameter. * script-sections.cc (Sections_element::output_section_name): Likewise. (Output_section_definition::output_section_name): Likewise. (Script_sections::output_section_name): Likewise.
2016-12-19Fix an internal error in the constructor of Target_arm.Igor Kudrin6-28/+55
gold/ * arm.cc (Target_arm::Target_arm): Move initialization code ... (Target_arm::do_select_as_default_target): ... to here. * testsuite/Makefile.am (arm_target_lazy_init): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/arm_target_lazy_init.s: New source file. * testsuite/arm_target_lazy_init.t: New linker script.
2016-12-19Fix forced allocation of common (-d) during -r links.Cary Coutant5-4/+81
If the .bss section has other data in it besides common allocations, gold was subtracting the wrong section start address from the symbol value. gold/ PR gold/20976 * symtab.cc (Symbol_table::sized_write_globals): Use address of output section, not input section. * testsuite/Makefile.am (pr20976): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/pr20976.c: New source file.
2016-12-13Add --orphan-handling option.Cary Coutant4-4/+80
gold/ PR gold/20749 * options.h (--orphan-handling): New option. (General_options::Orphan_handling): New enum. (General_options::orphan_handling_enum): New method. (General_options::set_orphan_handling_enum): New method. (General_options::orphan_handling_enum_): New data member. * options.cc (General_options::General_options): Initialize new member. (General_options::finalize): Convert --orphan-handling argument to enum. * script-sections.cc (Script_sections::output_section_name): Check it.
2016-12-13Do not use linker script to place static relocation sections.Cary Coutant3-20/+32
gold/ PR gold/20522 * layout.cc (Layout::choose_output_section): Add is_reloc parameter. Adjust all callers. Do not use linker script for is_reloc sections. (Layout::layout_reloc): Pass is_reloc == true. * layout.h (Layout::choose_output_section): Add is_reloc parameter.
2016-12-12When using linker scripts, place linker-generated sections by the output ↵Cary Coutant7-5/+101
section name. 2016-12-12 Igor Kudrin <ikudrin@accesssoftek.com> Cary Coutant <ccoutant@gmail.com> gold/ PR gold/14676 * script-sections.cc (Output_section_definition::output_section_name): For linker-generated sections, compare with output section name. * testsuite/Makefile.am (script_test_13): New test. * testsuite/Makefile.in: Regenerate. * testsuite/script_test_13.c: New source file. * testsuite/script_test_13.sh: New script. * testsuite/script_test_13.t: New linker script.
2016-12-12Fix edge cases in orphan section placement.Cary Coutant2-3/+42
There were still some cases I found where orphan section placement was screwy -- where the script has no output section description for either .data or .bss, a .bss orphan section ends up getting placed before the .data section. In addition, if there is an output section description for a data section not named .data (e.g., .rela.dyn), the orphan .bss gets placed before it. This patch cleans that up, by tracking the last allocated section even as we're adding orphans. I've also improved segment layout in the absence of a PHDRS clause. A zero-length NOBITS section will no longer force a new segment when followed by a PROGBITS section. 2016-12-12 Cary Coutant <ccoutant@gmail.com> gold/ * script-sections.cc (Orphan_section_placement::update_last_alloc): New method. (Orphan_section_placement::find_place): Place orphan .data section after either RODATA or TEXT. (Script_sections::place_orphan): Call update_last_alloc for allocated sections. (Script_sections::create_segments): Improve handling of BSS.
2016-12-13[GOLD] Allow for larger alignment in script_test_15Alan Modra4-3/+10
PowerPC64 aligns .got to a 256 byte boundary. This tends to bump the data segment file size. PR gold/16711 * testsuite/script_test_15a.sh: Allows larger p_filesz. * testsuite/script_test_15b.sh: Likewise. * testsuite/script_test_15c.sh: Likewise.
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