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2015-04-06[Gold,x86_64] Convert mov foo@GOTPCREL(%rip), %reg to lea foo(%rip), %regIlya Tocar1-6/+87
2015-04-06 Ilya Tocar <ilya.tocar@intel.com> PR gold/17641 * x86_64.cc (Target_x86_64::can_convert_mov_to_lea): New. (Target_x86_64::Scan::local): Don't create GOT entry, when we can convert mov to lea. (Target_x86_64::Scan::global): Ditto. (Target_x86_64::Relocate::relocate): Convert mov foo@GOTPCREL(%rip), %reg to lea foo(%rip), %reg if possible. * testsuite/Makefile.am (x86_64_mov_to_lea): New test. * testsuite/x86_64_mov_to_lea1.s: New. * testsuite/x86_64_mov_to_lea2.s: Ditto. * testsuite/x86_64_mov_to_lea3.s: Ditto. * testsuite/x86_64_mov_to_lea4.s: Ditto. * testsuite/x86_64_mov_to_lea.sh: Ditto. ---
2015-02-02Fix bug with previous patch for unresolved TLS symbol.Cary Coutant1-1/+3
We need to check that the output is executable before assuming that we can replace the reference with zero. 2015-02-02 Cary Coutant <ccoutant@google.com> gold/ * x86_64.cc (Target_x86_64::Relocate::relocate_tls): Check for executable output file.
2015-01-28Allow undefined references to TLS symbols.Cary Coutant1-3/+17
When --warn-unresolved-symbols is used, gold tries to create a dynamic relocation for it, and gives an internal error if the TLS segment has not already been created. This patch allows the IE-to-LE optimization for an undefined symbol when building an executable, which suppresses the dynamic relocation, and relaxes the requirement to have a TLS segment when applying a relocation for an undefined symbol. 2015-01-28 Cary Coutant <ccoutant@google.com> gold/ * x86_64.cc (Target_x86_64::Scan::global): Allow IE-to-LE optimization for undef TLS symbols. (Target_x86_64::Relocate::relocate_tls): Likewise. (Target_x86_64::Relocate::tls_ie_to_le): Likewise.
2015-01-06Handle stack split for x32H.J. Lu1-5/+28
X32 uses cmp %fs:NN,%esp, lea NN(%rsp),%r10d, lea NN(%rsp),%r11d, instead of cmp %fs:NN,%rsp, lea NN(%rsp),%r10, lea NN(%rsp),%r11. This patch handles it. PR gold/17729 * configure.ac (DEFAULT_TARGET_X86_64): Don't set for x32. (DEFAULT_TARGET_X32): Set for x32. * x86_64.cc (cmp_insn_32): New. (lea_r10_insn_32): Likewise. (lea_r11_insn_32): Likewise. (cmp_insn_64): Likewise. (lea_r10_insn_64): Likewise. (lea_r11_insn_64): Likewise. (Target_x86_64<size>::do_calls_non_split): Handle x32. * testsuite/Makefile.am (check_SCRIPTS): Add split_x32.sh. (check_DATA): Add split_x32 files. (split_x32_[1234n].o): New targets. (split_x32_[124]): New targets. (split_x32_[1234r].stdout): New targets. * testsuite/split_x32.sh: New file. * testsuite/split_x32_1.s: Likewise. * testsuite/split_x32_2.s: Likewise. * testsuite/split_x32_3.s: Likewise. * testsuite/split_x32_4.s: Likewise. * testsuite/split_x32_n.s: Likewise. * configure: Regenerated. * testsuite/Makefile.in: Likewise.
2015-01-06Handle Initial-Exec to Local-Exec for x32H.J. Lu1-0/+6
PR gold/17809 * x86_64.cc (Target_x86_64<size>::Relocate::tls_ie_to_le): Handle x32.
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-11-21Check PC-relative offset overflow in PLT entryH.J. Lu1-3/+8
PR gold/17619 * x86_64.cc (Output_data_plt_x86_64_standard<size>::do_fill_plt_entry): Check PC-relative offset overflow in PLT entry.
2014-11-14Don't make PLT entry for R_X86_64_GOTPLT64H.J. Lu1-7/+2
* x86_64.cc (Target_x86_64<size>::Scan::global): Don't make PLT entry for R_X86_64_GOTPLT64. (Target_x86_64<size>::Relocate::relocate): Update comments for R_X86_64_GOTPLT64.
2014-05-27Properly handle 64-bit GOT relocationsH.J. Lu1-2/+5
This patch fixes 2 issues: 1. Since the GOT offset is always negative, we need to use signed int to support 64-bit GOT relocations. 2. R_X86_64_PLTOFF64 uses the address of GLOBAL_OFFSET_TABLE, which is the address of the .got.plt section, not the .got section.
2014-05-13With -pie and x86, the linker complains if it sees a PC-relative relocationSriraman Tallam1-2/+4
to access a global as it expects a GOTPCREL relocation. This is really not necessary as the linker could use a copy relocation to get around it. This patch enables copy relocations with pie. Context: This is useful because currently the GCC compiler with option -fpie makes every extern global access go through the GOT. That is because the compiler cannot tell if a global will end up being defined in the executable or not and is conservative. This ends up hurting performance when the binary is linked as mostly static where most of the globals do end up being defined in the executable. By allowing copy relocs with fPIE, the compiler need not generate a GOTPCREL(GOT access) for any global access. It can safely assume that all globals will be defined in the executable and generate a PC-relative access instead. Gold can then create a copy reloc for only the undefined globals. gold/ * symtab.h (may_need_copy_reloc): Remove check for position independent code. * x86_64.cc (Target_x86_64<size>::Scan::global): Add check for no position independence before pc absolute may_need_copy_reloc call. Add check for executable output befor pc relative may_need_copy_reloc call. * i386.cc: Ditto. * arm.cc: Ditto. * sparc.cc: Ditto. * tilegx.cc: Ditto. * powerpc.cc: Add check for no position independence before may_need_copy_reloc calls. * testsuite/pie_copyrelocs_test.cc: New file. * testsuite/pie_copyrelocs_shared_test.cc: New file. * Makefile.am (pie_copyrelocs_test): New test. * Makefile.in: Regenerate.
2014-05-06Fix issue where first reserved word of GOT is not initialized if thereCary Coutant1-35/+75
is no PLT. gold/ PR gold/16900 * i386.cc (Output_data_got_plt_i386): New class. (Output_data_plt_i386::Output_data_plt_i386): Change type of got_plt parameter. Change all callers. (Output_data_plt_i386::layout_): Remove. (Output_data_plt_i386::got_plt_): Change type. (Target_i386::got_plt_): Change type. Change all references. (Target_i386::got_section): Create instance of new class. (Output_data_got_plt_i386::do_write): New function. * x86_64.cc (Output_data_got_plt_x86_64): New class. (Output_data_plt_x86_64::Output_data_plt_x86_64): Change type of got_plt parameter. Change all callers. (Output_data_plt_x86_64::layout_): Remove. (Output_data_plt_x86_64::got_plt_): Change type. (Target_x86_64::got_plt_): Change type. Change all references. (Target_x86_64::got_section): Create instance of new class. (Output_data_got_plt_x86_64::do_write): New function. (Output_data_plt_x86_64::do_write): Don't write reserved words in GOT. (Target_x86_64<size>::init_got_plt_for_update): Create instance of new class.
2014-04-23Add missing break statement for case elfcpp::R_X86_64_PLTOFF64.Cary Coutant1-0/+1
gold/ * x86_64.cc (Target_x86_64::Relocate::relocate): Add missing break.
2014-03-05Update copyright yearsAlan Modra1-2/+1
2013-11-18Add R_X86_64_PC32_BND/R_X86_64_PLT32_BND suppor to goldH.J. Lu1-6/+35
elfcpp/ * x86_64.h (R_X86_64_PC32_BND): New. (R_X86_64_PLT32_BND): Likewise. gold/ * x86_64.cc (Target_x86_64<size>::Scan::get_reference_flags): Handle R_X86_64_PC32_BND and R_X86_64_PLT32_BND just like R_X86_64_PC32 and R_X86_64_PLT32, respectively. (Target_x86_64<size>::Scan::local): Likewise. (Target_x86_64<size>::Scan::global): Likewise. (Target_x86_64<size>::Relocate::relocate): Likewise. (Target_x86_64<size>::Relocatable_size_for_reloc::get_size_for_reloc): Likewise. (Target_x86_64<size>::Scan::check_non_pic(): Handle R_X86_64_PC32_BND. * testsuite/Makefile.am (check_PROGRAMS): Add exception_x86_64_bnd_test. (exception_x86_64_bnd_test_SOURCES): New macro. (exception_x86_64_bnd_test_DEPENDENCIES): Likewise. (exception_x86_64_bnd_test_LDFLAGS): Likewise. (exception_x86_64_bnd_test_LDADD): Likewise. (exception_x86_64_bnd_1.o): New rule. (exception_x86_64_bnd_2.o): Likewise. * testsuite/Makefile.in: Regenerated.
2013-10-30gold: x86_64-nacl: Correct 9-byte nop sequence to match what the assembler ↵Roland McGrath1-1/+1
generates. gold/ * x86_64.cc (Output_data_plt_x86_64_nacl::first_plt_entry): Correct 9-byte nop sequence to match what the assembler generates.
2013-10-11gold/Roland McGrath1-3/+1
* i386.cc (Target_i386): Remove unused member dynbss_. * arm.cc (Target_arm): Likewise. * powerpc.cc (Target_powerpc): Likewise. * sparc.cc (Target_sparc): Likewise. * tilegx.cc (Target_tilegx): Likewise. * x86_64.cc (Target_x86_64): Likewise. * dwarf_reader.h (Dwarf_info_reader): Remove unused members type_signature_, type_offset_. * plugin.h (Plugin_hook): Remove unused member layout_. * readsyms.h (Add_symbols): Remove unused members dirpath_, dirindex_, mapfile_. (Read_member): Remove unused members input_objects_, symtab_, mapfile_, layout_. (Check_library): Remove unused member symtab_. * archive.h (Lib_group): Remove unused member lib_. * archive.cc (Lib_group::Lib_group): Update initializer. * incremental.h (Incremental_binary): Remove unused member target_. (Incremental_script_entry): Removed unused member script_. * layout.h (Write_symbols_task): Remove unused member input_objects_. * icf.h (Icf): Remove unused member num_tracked_relocs.
2013-09-03Use relative relocation for R_X86_64_32 on x32H.J. Lu1-1/+2
2013-09-03 Pavel Chupin <pavel.v.chupin@intel.com> PR gold/15927 * x86_64.cc (Target_x86_64<size>::Scan::global): Use relative relocation for R_X86_64_32 on x32.
2013-08-16gold/Roland McGrath1-0/+13
* i386.cc (Target_i386_nacl::do_code_fill): New virtual function. * x86_64.cc (Target_x86_64_nacl::do_code_fill): New virtual function.
2013-07-30 gold/Cary Coutant1-4/+8
* parameters.cc (Parameters::entry): Return target-specific entry symbol name. * target.h (Target::entry_symbol_name): New function. (Target_info::entry_symbol_name): New data member. * arm.cc (Target_arm::arm_info): Add entry_symbol_name. (Target_arm_nacl::arm_nacl_info): Likewise. * i386.cc (Target_i386::i386_info): Likewise. (Target_i386_nacl::i386_nacl_info): Likewise. * powerpc.cc (Target_powerpc::powerpc_info): Likewise. * sparc.cc (Target_sparc::sparc_info): Likewise. * tilegx.cc (Target_tilegx::tilegx_info): Likewise. * x86_64.cc: (Target_x86_64::x86_64_info) Likewise. (Target_x86_64_nacl::x86_64_nacl_info) Likewise. * testsuite/testfile.cc (Target_test::test_target_info): Likewise.
2013-04-27 * target-reloc.h (relocate_section): If the reloc offset is out ofIan Lance Taylor1-1/+4
range, pass VIEW as NULL to relocate.relocate. * arm.cc (Target_arm:Relocate::relocate): Check for a NULL view. * i386.cc (Target_i386::Relocate::relocate): Likewise. * powerpc.cc (Target_powerpc::Relocate::relocate): Likewise. * sparc.cc (Target_sparc::Relocate::relocate): Likewise. * tilegx.cc (Target_tilegx::Relocate::relocate): Likewise. * x86_64.cc (Target_x86_64::Relocate::relocate): Likewise.
2012-11-20Fix TLS to LE optimization for x32H.J. Lu1-1/+8
PR gold/14858 * x86_64.cc (Relocate::tls_ld_to_le): Support x32.
2012-11-01gold/Roland McGrath1-3/+3
* target.h (Sized_target::relocate_relocs): Use Elf_Off for offset_in_output_section parameter. (Sized_target::relocate_special_relocatable): Likewise. * arm.cc (Target_arm::relocate_relocs): Likewise. (Target_arm::relocate_special_relocatable): Likewise. * i386.cc (Target_i386::relocate_relocs): Likewise. * powerpc.cc (Target_powerpc::relocate_relocs): Likewise. * sparc.cc (Target_sparc::relocate_relocs): Likewise. * target-reloc.h (relocate_relocs): Likewise. * testsuite/testfile.cc (Target_test): Likewise. * tilegx.cc (Target_tilegx::relocate_relocs): Likewise. * x86_64.cc (Target_x86_64::relocate_relocs): Likewise.
2012-10-18 * target-reloc.h (class Default_comdat_behavior): New, package up..Alan Modra1-1/+2
(get_comdat_behaviour): ..this. (relocate_section): Add Relocate_comdat_behavior template arg, adjust code to suit. * arm.cc (Target_arm::relocate_section): Adjust to suit. (Target_arm::scan_reloc_section): Likewise. * i386.cc (Target_i386::relocate_section): Likewise. * sparc.cc (Target_sparc::relocate_section): Likewise. * tilegx.cc (Target_tilegx::relocate_section): Likewise. * x86_64.cc (Target_x86_64::relocate_section): Likewise. * powerpc.cc (class Relocate_comdat_behavior): New. (Target_powerpc::relocate_section): Don't zap opd relocs. Supply gold::relocate_section with new template arg.
2012-10-05 * i386.cc (Output_data_plt_i386::address_for_global,Alan Modra1-8/+9
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 * target-reloc.h (scan_relocs): Call scan.local for relocsAlan Modra1-2/+7
against symbols in discarded sections. Pass is_discarded param. * arm.cc, * i386.cc, * sparc.cc, * x86_64.cc (Target_*::Scan::local): Add is_discarded param. * powerpc (Target_powerpc::Scan::local): Likewise. Use is_discarded to flag opd entry as discarded. Don't emit dyn relocs on such entries. (Target_powerpc::Scan::global): Similarly detect and handle such opd entries. (Powerpc_relobj): Replace opd_ent_shndx_ and opd_ent_off_ with opd_ent_. Update all uses. (Powerpc_relobj::get_opd_discard, set_opd_discard): New functions. (Target_powerpc::relocate_section): Zero out discarded opd entry relocs.
2012-09-10 * output.h (Output_data_got::add_global_tls, add_local_tls,Alan Modra1-1/+1
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 Modra1-4/+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.
2012-08-15 * x86_64.cc (Target_x86_64::Scan::global): Fix erroneous call toIan Lance Taylor1-1/+1
unsupported_relocal_local to call unsupported_reloc_global.
2012-05-11Handle R_X86_64_64 properly for x32H.J. Lu1-1/+3
elfcpp/ PR gold/14091 * x86_64.h (R_X86_64_RELATIVE64): New. gold/ PR gold/14091 * x86_64.cc (Target_x86_64::Scan::local): For x32, generate R_X86_64_RELATIVE64 instead of R_X86_64_RELATIVE in case of R_X86_64_64.
2012-05-02 * configure.ac (ENABLE_GOLD): Consider *-*-nacl* targets ELF.Roland McGrath1-501/+1087
* configure: Regenerate. gold/ * nacl.cc: New file. * nacl.h: New file. * Makefile.am (CCFILES, HFILES): Add them. * Makefile.in: Regenerate. * i386.cc (Output_data_plt_i386_nacl): New class. (Output_data_plt_i386_nacl_exec): New class. (Output_data_plt_i386_nacl_dyn): New class. (Target_i386_nacl): New class. (Target_selector_i386_nacl): New class. (target_selector_i386): Use it instead of Target_selector_i386. * x86_64.cc (Output_data_plt_x86_64_nacl): New class. (Target_x86_64_nacl): New class. (Target_selector_x86_64_nacl): New class. (target_selector_x86_64, target_selector_x32): Use it instead of Target_selector_x86_64. * arm.cc (Output_data_plt_arm_nacl): New class. (Target_arm_nacl): New class. (Target_selector_arm_nacl): New class. (target_selector_arm, target_selector_armbe): Use it instead of Target_selector_arm. * target-select.cc (select_target): Take new Input_file* and off_t arguments, pass them on to recognize method of selector. * object.cc (make_elf_sized_object): Update caller. * parameters.cc (parameters_force_valid_target): Likewise. * incremental.cc (make_sized_incremental_binary): Likewise. * target-select.h: Update decl. (Target_selector::recognize): Take new Input_file* argument, pass it on to do_recognize. (Target_selector::do_recognize): Take new Input_file* argument. * freebsd.h (Target_selector_freebsd::do_recognize): Likewise. * powerpc.cc (Target_selector_powerpc::do_recognize): Likewise. * sparc.cc (Target_selector_sparc::do_recognize): Likewise. * testsuite/testfile.cc (Target_selector::do_recognize): Likewise. * target.h (Target::Target_info): New members isolate_execinstr and rosegment_gap. (Target::isolate_execinstr, Target::rosegment_gap): New methods. * arm.cc (Target_arm::arm_info): Update initializer. * i386.cc (Target_i386::i386_info): Likewise. * powerpc.cc (Target_powerpc::powerpc_info): Likewise. * sparc.cc (Target_sparc::sparc_info): Likewise. * x86_64.cc (Target_x86_64::x86_64_info): Likewise. * testsuite/testfile.cc (Target_test::test_target_info): Likewise. * layout.cc (Layout::attach_allocated_section_to_segment): Take new const Target* argument. If target->isolate_execinstr(), act like --rosegment. (Layout::find_first_load_seg): Take new const Target* argument; if target->isolate_execinstr(), reject PF_X segments. (Layout::relaxation_loop_body): Update caller. (Layout::set_segment_offsets): If target->isolate_execinstr(), reset file offset to zero when we hit LOAD_SEG, and then do a second loop over the segments before LOAD_SEG to reassign offsets after addresses have been determined. Handle target->rosegment_gap(). (Layout::attach_section_to_segment): Take new const Target* argument; pass it to attach_allocated_section_to_segment. (Layout::make_output_section): Update caller. (Layout::attach_sections_to_segments): Take new const Target* argument; pass it to attach_section_to_segment. * gold.cc (queue_middle_tasks): Update caller. * layout.h (Layout): Update method decls with new arguments. * arm.cc (Target_arm::Target_arm): Take optional argument for the Target_info pointer to use. (Target_arm::do_make_data_plt): New virtual method. (Target_arm::make_data_plt): New method that calls it. (Target_arm::make_plt_entry): Use it. (Output_data_plt_arm::Output_data_plt_arm): Take additional argument for the section alignment. (Output_data_plt_arm::do_first_plt_entry_offset): New abstract virtual method. (Output_data_plt_arm::first_plt_entry_offset): Call it. (Output_data_plt_arm::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_arm::get_plt_entry_size): Call it. (Output_data_plt_arm::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_arm::fill_plt_entry): New method that calls it. (Output_data_plt_arm::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_arm::fill_first_plt_entry): New method that calls it. (Output_data_plt_arm::set_final_data_size): Use get_plt_entry_size method instead of sizeof(plt_entry). (Output_data_plt_arm::add_entry): Likewise. Use first_plt_entry_offset method instead of sizeof(first_plt_entry). (Target_arm::first_plt_entry_offset): Call method on this->plt_ rather than static method. (Target_arm::plt_entry_size): Likewise. (Output_data_plt_arm::first_plt_entry, Output_data_plt_arm::plt_entry): Move to ... (Output_data_plt_arm_standard): ... here, new class. (Output_data_plt_arm::do_write): Move guts of PLT filling to... (Output_data_plt_arm_standard::do_fill_first_plt_entry): ... here ... (Output_data_plt_arm_standard::do_fill_plt_entry): ... and here. * x86_64.cc (Output_data_plt_x86_64::Output_data_plt_x86_64): Take additional argument for the PLT entry size. (Output_data_plt_x86_64::get_tlsdesc_plt_offset): Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_x86_64::reserve_slot): Likewise. (Output_data_plt_x86_64::do_adjust_output_section): Likewise. (Output_data_plt_x86_64::add_entry): Likewise. (Output_data_plt_x86_64::add_local_ifunc_entry): Likewise. (Output_data_plt_x86_64::address_for_global): Likewise. (Output_data_plt_x86_64::address_for_local): Likewise. (Output_data_plt_x86_64::set_final_data_size): Likewise. (Output_data_plt_x86_64::first_plt_entry_offset): Likewise. Make method non-static. (Output_data_plt_x86_64::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_x86_64::get_plt_entry_size): Just call that. (Output_data_plt_x86_64::do_add_eh_frame): New abstract virtual method. (Output_data_plt_x86_64::add_eh_frame): New method to call it. (Output_data_plt_x86_64::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_first_plt_entry): New method to call it. (Output_data_plt_x86_64::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_plt_entry): New method to call it. (Output_data_plt_x86_64::do_fill_tlsdesc_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_tlsdesc_entry): New method to call it. (Output_data_plt_x86_64::plt_entry_size) (Output_data_plt_x86_64::first_plt_entry) (Output_data_plt_x86_64::plt_entry) (Output_data_plt_x86_64::tlsdesc_plt_entry) (Output_data_plt_x86_64::plt_eh_frame_fde_size) (Output_data_plt_x86_64::plt_eh_frame_fde): Move to ... (Output_data_plt_x86_64_standard): ... here, new class. (Target_x86_64::Target_x86_64): Take optional argument for the Target_info pointer to use. (Target_x86_64::do_make_data_plt): New virtual method. (Target_x86_64::make_data_plt): New method to call it. (Target_x86_64::init_got_plt_for_update): Use that. Call this->plt_->add_eh_frame method here. (Output_data_plt_x86_64::init): Don't do add_eh_frame_for_plt here. (Target_x86_64::first_plt_entry_offset): Call method on this->plt_ rather than static method. (Target_x86_64::plt_entry_size): Likewise. (Output_data_plt_x86_64::do_write): Use get_plt_entry_size method rather than plt_entry_size variable. Move guts of PLT filling to... (Output_data_plt_x86_64_standard::do_fill_first_plt_entry): ... here ... (Output_data_plt_x86_64_standard::do_fill_plt_entry): ... and here ... (Output_data_plt_x86_64_standard::do_fill_tlsdesc_entry): ... and here. * i386.cc (Output_data_plt_i386::Output_data_plt_i386): Take additional argument for the section alignment. Don't do add_eh_frame_for_plt here. (Output_data_plt_i386::first_plt_entry_offset): Make the method non-static. Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_i386::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_i386::get_plt_entry_size): Call it. (Output_data_plt_i386::do_add_eh_frame): New abstract virtual method. (Output_data_plt_i386::add_eh_frame): New method to call it. (Output_data_plt_i386::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_i386::fill_first_plt_entry): New method to call it. (Output_data_plt_i386::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_i386::fill_plt_entry): New method to call it. (Output_data_plt_i386::set_final_data_size): Use get_plt_entry_size method instead of plt_entry_size. (Output_data_plt_i386::plt_entry_size) (Output_data_plt_i386::plt_eh_frame_fde_size) (Output_data_plt_i386::plt_eh_frame_fde): Move to ... (Output_data_plt_i386_standard): ... here, new class. (Output_data_plt_i386_exec): New class. (Output_data_plt_i386::exec_first_plt_entry): Move to ... (Output_data_plt_i386_exec::first_plt_entry): ... here. (Output_data_plt_i386::exec_plt_entry): Move to ... (Output_data_plt_i386_exec::plt_entry): ... here. (Output_data_plt_i386_dyn): New class. (Output_data_plt_i386::first_plt_entry): Move to ... (Output_data_plt_i386_dyn::first_plt_entry): ... here. (Output_data_plt_i386::dyn_plt_entry): Move to ... (Output_data_plt_i386_dyn::plt_entry): ... here. (Target_i386::Target_i386): Take optional argument for the Target_info pointer to use. (Target_i386::do_make_data_plt): New virtual method. (Target_i386::make_data_plt): New method to call it. (Target_i386::make_plt_section): Use that. Call this->plt_->add_eh_frame method here. (Output_data_plt_i386::add_entry): Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_i386::add_local_ifunc_entry): Likewise. (Output_data_plt_i386::address_for_local): Likewise. (Output_data_plt_i386::do_write): Likewise. Move guts of PLT filling to... (Output_data_plt_i386_exec::do_fill_first_plt_entry): ... here ... (Output_data_plt_i386_exec::do_fill_plt_entry): ... and here ... (Output_data_plt_i386_dyn::do_fill_first_plt_entry): ... and here ... (Output_data_plt_i386_dyn::do_fill_plt_entry): ... and here. Change-Id: Id24b95600489835ff5e860a39c147203d4380c2b
2012-04-17gold: Allow use_plt_offset to be specified for global relocations.David S. Miller1-7/+7
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.
2012-01-27Support x32 GD->IE and GD->LE optimizationsH.J. Lu1-17/+54
2012-01-27 H.J. Lu <hongjiu.lu@intel.com> * x86_64.cc (Relocate::tls_gd_to_ie): Support x32. (Relocate::tls_gd_to_le): Likewise.
2012-01-27Support x32 IFUNC function pointerH.J. Lu1-1/+2
2012-01-27 H.J. Lu <hongjiu.lu@intel.com> * x86_64.cc (Scan::global): Support x32 IFUNC function pointer.
2012-01-24 PR gold/13617Ian Lance Taylor1-2/+3
* i386.cc (Target_i386::do_code_fill): When using a jmp instruction, pad with nop instructions. * x86_64.cc (Target_x86_64::do_code_fill): Likewise.
2012-01-20Add typename on types used in templateH.J. Lu1-5/+5
2012-01-22 H.J. Lu <hongjiu.lu@intel.com> * x86_64.cc (gc_process_relocs): Add typename on types used in template. (scan_relocs): Likewise. (relocate_section): Likewise. (apply_relocation): Likewise.
2012-01-10Properly handle R_X86_64_32 for x32H.J. Lu1-0/+16
2012-01-10 H.J. Lu <hongjiu.lu@intel.com> * x86_64.cc (Scan::check_non_pic): Allow R_X86_64_32 for x32. (Scan::local): Use R_X86_64_RELATIVE relocation for R_X86_64_32 under x32.
2012-01-09Initial x32 support in goldH.J. Lu1-385/+513
2012-01-09 H.J. Lu <hongjiu.lu@intel.com> * x86_64.cc: Initial support for x32.
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.
2011-12-19 * object.h (Relobj::local_symbol_value): New function.Ian Lance Taylor1-25/+25
(Relobj::local_plt_offset): New function. (Relobj::local_has_got_offset): New function. (Relobj::local_got_offset): New function. (Relobj::set_local_got_offset): New function. (Relobj::do_local_symbol_value): New pure virtual function. (Relobj::do_local_plt_offset): Likewise. (Relobj::do_local_has_got_offset): Likewise. (Relobj::do_local_got_offset): Likewise. (Relobj::do_set_local_got_offset): Likewise. (Sized_relobj::do_local_has_got_offset): Rename from local_has_got_offset. (Sized_relobj::do_local_got_offset): Rename from local_got_offset. (Sized_relobj::do_set_local_got_offset): Rename from set_local_got_offset. (Sized_relobj_file::do_local_plt_offset): Rename from local_plt_offset. (Sized_relobj_file::do_local_symbol_value): New function. * object.cc (Sized_relobj_file::do_local_plt_offset): Rename from local_plt_offset. * output.cc (Output_data_got::Got_entry::write): Change object to Relobj. Use local_symbol_value. (Output_data_got::add_global_with_rel): Change rel_dyn to Output_data_reloc_generic*. Use add_global_generic. (Output_data_got::add_global_with_rela): Remove. Change all callers to use add_global_with_rel. (Output_data_got::add_global_pair_with_rel): Change rel_dyn to Output_data_reloc_generic*. Use add_global_generic. (Output_data_got::add_global_pair_with_rela): Remove. Change all callers to use add_global_pair_with_rel. (Output_data_got::add_local): Change object to Relobj*. (Output_data_got::add_local_plt): Likewise. (Output_data_got::add_local_with_rel): Change object to Relobj*, change rel_dyn to Output_data_reloc_generic*. Use add_local_generic. (Output_data_got::add_local_with_rela): Remove. Change all callers to use all_local_with_rel. (Output_data_got::add_local_pair_with_rel): Change object to Relobj*, change rel_dyn to Output_data_reloc_generic*. Use add_output_section_generic. (Output_data_got::add_local_pair_with_rela): Remove. Change all callers to use add_local_pair_with_rel. (Output_data_got::reserve_local): Change object to Relobj*. * output.h: (class Output_data_reloc_generic): Add pure virtual declarations for add_global_generic, add_local_generic, add_output_section_generic. (class Output_data_reloc) [SHT_REL, SHT_RELA]: Implement new functions for Output_data_reloc_generic. Update declarations for changes listed in output.cc. (class Output_data_got): Change template parameter to got_size. Don't define Rel_dyn or Rela_dyn. Update declarations per above. * incremental.h (Sized_relobj_incr::do_local_symbol_value): New function. (Sized_relobj_incr::do_local_plt_offset): New function. * copy-relocs.cc (Copy_relocs::Copy_reloc_entry::emit): Call add_global_generic.
2011-12-172011-12-17 Cary Coutant <ccoutant@google.com>Cary Coutant1-36/+45
* dwarf_reader.cc (Sized_dwarf_line_info::read_lines): Add casts. * resolve.cc (Symbol_table::resolve): Likewise. * i386.cc (Target_i386::do_code_fill): Use char constants for nop arrays. * x86_64.cc (Target_x86_64::do_code_fill): Likewise.
2011-10-31 PR gold/13359Cary Coutant1-6/+0
* i386.cc (Target_i386::Relocate::relocate_tls): Remove unnecessary assertion. * x86_64.cc (Target_x86_64::Relocate::relocate_tls): Likewise.
2011-10-10 PR gold/13249Cary Coutant1-6/+6
* gold/output.cc (Output_reloc::Output_reloc): Add use_plt_offset flag. (Output_reloc::symbol_value): Return PLT offset if flag is set. * gold/output.h (class Output_reloc): Add use_plt_offset flag. (Output_reloc::type_): Adjust size of bit field. (Output_reloc::use_plt_offset_): New bit field. (class Output_data_reloc): Adjust all calls to Output_reloc_type. (Output_data_reloc::add_local_relative): (RELA only) Add use_plt_offset flag. Adjust all callers. * gold/x86_64.cc (Target_x86_64::Scan::local): Check for IFUNC when creating RELATIVE relocations.
2011-07-15 * i386.cc (class Output_data_plt_i386): Add layout_ field.Ian Lance Taylor1-8/+20
(Output_data_plt_i386::Output_data_plt_i386): Initialize layout_. (Output_data_plt_i386::do_write): Write address of .dynamic section to first entry in .got.plt section. * x86_64.cc (class Output_data_plt_x86_64): Add layout_ field. (Output_data_plt_x86_64::Output_data_plt_x86_64) [both versions]: Initialize layout_. (Output_data_plt_x86_64::do_write): Write address of .dynamic section to first entry in .got.plt section. * layout.h (Layout::dynamic_section): New function.
2011-07-13 * i386.cc (Target_i386::got_section): If -z now, make .got.plt aIan Lance Taylor1-8/+21
relro section. * x86_64.cc (Target_x86_64::got_section): Likewise. * testsuite/Makefile.am (check_PROGRAMS): Add relro_now_test. (relro_now_test_SOURCES): New variable. (relro_now_test_DEPENDENCIES): New variable. (relro_now_test_LDFLAGS): New variable. (relro_now_test_LDADD): New variable. (relro_now_test.so): New target. * testsuite/Makefile.in: Rebuild.
2011-07-12 PR gold/12980Ian Lance Taylor1-0/+15
* i386.cc (Target_i386::Scan::global): For a GOT reloc, use a GLOB_DAT relocation rather than a RELATIVE relocation for a protected symbol when creating a shared library. * x86_64.cc (Target_x86_64::Scan::global): Likewise. * testsuite/protected_1.cc (f2, get_f2_addr): New functions. * testsuite/protected_main_1.cc (main): Test that protected function has same address.
2011-07-09 PR gold/11317Ian Lance Taylor1-9/+18
* target-reloc.h (issue_undefined_symbol_error): New inline function, broken out of relocate_section. (relocate_section): Call issue_undefined_symbol_error. * i386.cc (Target_i386::Relocate::relocate_tls): Don't crash if there is no TLS segment if we are about to issue an undefined symbol error. * x86_64.cc (Target_x86_64::relocate_tls): Likewise.
2011-07-08 PR gold/12279Ian Lance Taylor1-8/+45
* resolve.cc (Symbol_table::should_override): Add fromtype parameter. Change all callers. Give error when linking together TLS and non-TLS symbol. (Symbol_table::should_override_with_special): Add fromtype parameter. Change all callers. * i386.cc (Target_i386::Relocate::relocate_tls): Don't crash if there is no TLS segment if we have reported some errors. * x86_64.cc (Target_x86_64::relocate_tls): Likewise.
2011-07-08 PR gold/12372Ian Lance Taylor1-87/+249
* target.h (Target::plt_address_for_global): New function. (Target::plt_address_for_local): New function. (Target::plt_section_for_global): Remove. (Target::plt_section_for_local): Remove. (Target::do_plt_address_for_global): New virtual function. (Target::do_plt_address_for_local): New virtual function. (Target::do_plt_section_for_global): Remove. (Target::do_plt_section_for_local): Remove. (Target::register_global_plt_entry): Add Symbol_table and Layout parameters. * output.cc (Output_data_got::Got_entry::write): Use plt_address_for_global and plt_address_for_local. * layout.cc (Layout::add_target_dynamic_tags): Use size and address of output section. * i386.cc (class Output_data_plt_i386): Add irelative_rel_, got_irelative_, and irelative_count_ fields. Update declarations. (Output_data_plt_i386::has_irelative_section): New function. (Output_data_plt_i386::entry_count): Add irelative_count_. (Output_data_plt_i386::set_final_data_size): Likewise. (class Target_i386): Add got_irelative_ and rel_irelative_ fields. Update declarations. (Target_i386::Target_i386): Initialize new fields. (Target_i386::do_plt_address_for_global): New function replacing do_plt_section_for_global. (Target_i386::do_plt_address_for_local): New function replacing do_plt_section_for_local. (Target_i386::got_section): Create got_irelative_. (Target_i386::rel_irelative_section): New function. (Output_data_plt_i386::Output_data_plt_i386): Initialize new fields. Don't define __rel_iplt_{start,end}. (Output_data_plt_i386::add_entry): Add symtab and layout parameters. Change all callers. Use different PLT and GOT for IFUNC symbols. (Output_data_plt_i386::add_local_ifunc_entry): Add symtab and layout parameters. Change all callers. Use different PLT and GOT. (Output_data_plt_i386::rel_tls_desc): Fix formatting. (Output_data_plt_i386::rel_irelative): New function. (Output_data_plt_i386::address_for_global): New function. (Output_data_plt_i386::address_for_local): New function. (Output_data_plt_i386::do_write): Write out IRELATIVE area. Use IRELATIVE GOT when changing IFUNC GOT entries. (Target_i386::Scan::global): Use IRELATIVE GOT for IRELATIVE reloc. (Target_i386::do_finalize_sections): Create the __rel_iplt symbols if we didn't create an IRELATIVE GOT. (Target_i386::Relocate::relocate): Use plt_address_for_global and plt_address_for_local. (Target_i386::do_dynsym_value): Use plt_address_for_global. * x86_64.cc (class Output_data_plt_x86_64): Add irelative_rel_, got_irelative_, and irelative_count_ fields. Update declarations. (Output_data_plt_x86_64::Output_data_plt_x86_64) [both versions]: Initialize new fields. Remove symtab parameter. Change all callers. (Output_data_plt_x86_64::get_tlsdesc_plt_offset): Add irelative_count_. (Output_data_plt_x86_64::has_irelative_section): New function. (Output_data_plt_x86_64::entry_count): Add irelative_count_. (class Target_x86_64): Add got_irelative_ and rel_irelative_ fields. Update declarations. (Target_x86_64::Target_x86_64): Initialize new fields. (Target_x86_64::do_plt_address_for_global): New function replacing do_plt_section_for_global. (Target_x86_64::do_plt_address_for_local): New function replacing do_plt_section_for_local. (Target_x86_64::got_section): Create got_irelative_. (Target_x86_64::rela_irelative_section): New function. (Output_data_plt_x86_64::init): Remove symtab parameter. Change all callers. Don't create __rel_iplt_{start,end}. (Output_data_plt_x86_64::add_entry): Add symtab and layout parameters. Change all callers. Use different PLT and GOT for IFUNC symbols. (Output_data_plt_x86_64::add_local_ifunc_entry): Add symtab and layout parameters. Change all callers. Use different PLT and GOT. (Output_data_plt_x86_64::add_relocation): Add symtab and layout parameters. Change all callers. Use different PLT and GOT for IFUNC symbols. (Output_data_plt_x86_64::rela_tlsdesc): Fix formatting. (Output_data_plt_x86_64::rela_irelative): New function. (Output_data_plt_x86_64::address_for_global): New function. (Output_data_plt_x86_64::address_for_local): New function. (Output_data_plt_x86_64::set_final_data_size): Likewise. (Output_data_plt_x86_64::do_write): Write out IRELATIVE area. (Target_x86_64::init_got_plt_for_update): Create got_irelative_. (Target_x86_64::register_global_plt_entry): Add symtab and layout parameters. (Target_x86_64::Scan::global): Use IRELATIVE GOT for IRELATIVE reloc. (Target_x86_64::do_finalize_sections): Create the __rela_iplt symbols if we didn't create an IRELATIVE GOT. (Target_x86_64::Relocate::relocate): Use plt_address_for_global and plt_address_for_local. (Target_x86_64::do_dynsym_value): Use plt_address_for_global. * testsuite/ifuncvar1.c: New test file. * testsuite/ifuncvar2.c: New test file. * testsuite/ifuncvar3.c: New test file. * testsuite/Makefile.am (check_PROGRAMS): Add ifuncvar. (ifuncvar1_pic.o, ifuncvar2_pic.o, ifuncvar.so): New targets. (ifuncvar_SOURCES, ifuncvar_DEPENDENCIES): New variables. (ifuncvar_LDFLAGS, ifuncvar_LDADD): New variables. * testsuite/Makefile.in: Rebuild.
2011-07-06 PR gold/12392Ian Lance Taylor1-0/+40
* i386.cc (Target_i386::do_finalize_sections): Define __rel_iplt symbols if necessary. * x86_64.cc (Target_x86_64::do_finalize_sections): Likewise.
2011-07-02 PR gold/12525Ian Lance Taylor1-0/+19
* ehframe.cc (Eh_frame_hdr::get_fde_pc): Handle DW_EH_PE_datarel. Assert if we see DW_EH_PE_indirect. * target.h (Target::ehframe_datarel_base): New function. (Target::do_ehframe_datarel_base): New target function. * i386.cc (Target_i386::do_ehframe_datarel_base): New function. * x86_64.cc (Target_x86_64::do_ehframe_datarel_base): New function.
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