elfcpp/
PR gold/22914
* elfcpp.h (NT_GNU_PROPERTY_TYPE_0): New note type.
(GNU_PROPERTY_*): New Gnu property types.
* x86_64.h (GNU_PROPERTY_X86_FEATURE_1_IBT)
(GNU_PROPERTY_X86_FEATURE_1_SHSTK): New x86 feature bits.
gold/
PR gold/22914
* layout.cc (Layout::Layout): Initialize gnu_properties_.
(read_sized_value, write_sized_value): New functions.
(Layout::layout_gnu_property): New method.
(Layout::create_notes): Call create_gnu_properties_note.
(Layout::create_gnu_properties_note): New method.
* layout.h (Layout::layout_gnu_property): New method.
(Layout::create_gnu_properties_note): New method.
(Layout::Gnu_property, Layout::Gnu_properties): New types.
(Layout::gnu_properties_): New data member.
* object.cc (Sized_relobj_file::layout_gnu_property_section): New
method.
(Sized_relobj_file::do_layout): Handle .note.gnu.property sections.
* object.h (Sized_relobj_file::layout_gnu_property_section): New
method.
* target.h (Target::merge_gnu_property): New method.
(Target::do_merge_gnu_property): New virtual method.
* x86_64.cc (Target_x86_64::do_merge_gnu_property): New method.
* testsuite/Makefile.am (gnu_property_test): New test case.
* testsuite/Makefile.in: Regenerate.
* testsuite/gnu_property_a.S: New source file.
* testsuite/gnu_property_b.S: New source file.
* testsuite/gnu_property_c.S: New source file.
* testsuite/gnu_property_main.c: New source file.
* testsuite/gnu_property_test.sh: New test script.
This implements the special __tls_get_addr_opt call stub for powerpc
gold that returns __thread variable addresses without actually making
a call to __tls_get_addr in most cases. Shared libraries that are
loaded at program load time (ie. dlopen is not used) have a known
layout for their __thread variables, and thus DTPMOD64/DPTREL64 pairs
describing those variables can be set up by ld.so for the
__tls_get_addr_opt call stub fast exit.
Ref https://sourceware.org/ml/libc-alpha/2015-03/msg00626.html
I really, really wish I'd used a differently versioned __tls_get_addr
symbol than the base symbol to indicate glibc support for the
optimized call, rather than having glibc export __tls_get_addr_opt. A
lot of the messing around here, flipping symbols from __tls_get_addr
to __tls_get_addr_opt, is caused by that decision. About the only
benefit is that a user can see at a glance that their disassembled
code is calling __tls_get_addr via the fancy call stub.. Anyway, we
need references to __tls_get_addr to seem like they were to
__tls_get_addr_opt, and in cases like the tsan interceptor, a
definition of __tls_get_addr to seem like one of __tls_get_addr_opt
as well. That's the reason for Symbol::clear_in_reg and
Symbol_table::clone, and why symbols are substituted in Scan::global
and other places dealing with dynamic linking.
elfcpp/
* elfcpp.h (DT_PPC_OPT): Define.
* powerpc.h (PPC_OPT_TLS): Define.
gold/
* options.h (tls_get_addr_optimize): New option.
* symtab.h (Symbol::clear_in_reg, clone): New functions.
(Sized_symbol::clone): New function.
(Symbol_table::clone): New function.
* resolve.cc (Symbol::clone, Sized_symbol::clone): New functions.
* powerpc.cc (Target_powerpc::has_tls_get_addr_opt_,
tls_get_addr_, tls_get_addr_opt_): New vars.
(Target_powerpc::tls_get_addr_opt, tls_get_addr,
is_tls_get_addr_opt, replace_tls_get_addr,
set_has_tls_get_addr_opt, stk_linker): New functions.
(Target_powerpc::Track_tls::maybe_skip_tls_get_addr_call): Add
target param. Update callers. Compare symbols rather than names.
(Target_powerpc::do_define_standard_symbols): Init tls_get_addr_
and tls_get_addr_opt_.
(Target_powerpc::Branch_info::mark_pltcall): Translate tls_get_addr
sym to tls_get_addr_opt.
(Target_powerpc::Branch_info::make_stub): Likewise.
(Stub_table::define_stub_syms): Likewise.
(Target_powerpc::Scan::global): Likewise.
(Target_powerpc::Relocate::relocate): Likewise.
(add_3_12_2, add_3_12_13, bctrl, beqlr, cmpdi_11_0, cmpwi_11_0,
ld_11_1, ld_11_3, ld_12_3, lwz_11_3, lwz_12_3, mr_0_3, mr_3_0,
mtlr_11, std_11_1): New constants.
(Stub_table::eh_frame_added_): Delete.
(Stub_table::tls_get_addr_opt_bctrl_, plt_fde_len_, plt_fde_): New vars.
(Stub_table::init_plt_fde): New functions.
(Stub_table::add_eh_frame, replace_eh_frame): Move definition out
of line. Init and use plt_fde_.
(Stub_table::plt_call_size): Return size for tls_get_addr stub.
Extract alignment code to..
(Stub_table::plt_call_align): ..this new function. Adjust all callers.
(Stub_table::add_plt_call_entry): Set has_tls_get_addr_opt and
tls_get_addr_opt_bctrl, and align after that.
(Stub_table::do_write): Write out tls_get_addr stub.
(Target_powerpc::do_finalize_sections): Emit DT_PPC_OPT
PPC_OPT_TLS/PPC64_OPT_TLS bit.
(Target_powerpc::Relocate::relocate): Don't check for or modify
nop following bl for tls_get_addr stub.
The 64-bit ELF compression header has a reserved field. It should be
cleared to avoid random bits in it.
elfcpp/
PR gold/21857
* elfcpp.h (Chdr_write): Add put_ch_reserved.
(Chdr_write<64, true>::put_ch_reserved): New.
(Chdr_write<64, false>::put_ch_reserved): Likewise.
gold/
PR gold/21857
* compressed_output.cc (Output_compressed_section::set_final_data_size):
Call put_ch_reserved to clear the reserved field for 64-bit ELF.
elfcpp/
* elfcpp.h (DT_PPC64_OPT): Define.
* powerpc.h (PPC64_OPT_TLS, PPC64_OPT_MULTI_TOC,
PPC64_OPT_LOCALENTRY): Define.
gold/
* options.h (General_options): Add plt_localentry.
* powerpc.cc (Target_powerpc::st_other): New function.
(Target_powerpc::plt_localentry0_, plt_localentry0_init_,
has_localentry0_): New vars.
(Target_powerpc::plt_localentry0, set_has_localentry0,
is_elfv2_localentry0): New functions.
(Target_powerpc::Branch_info::mark_pltcall): Don't set tocsave or
return true for localentry:0 calls.
(Stub_table::Plt_stub_ent::localentry0_): New var.
(Stub_table::add_plt_call_entry): Set localentry0_ and has_localentry0_.
Don't set r2save_ for localentry:0 calls.
(Output_data_glink::do_write): Save r2 in __glink_PLTresolve for elfv2.
(Target_powerpc::scan_relocs): Default plt_localentry0_.
(Target_powerpc::do_finalize_sections): Set DT_PPC64_OPT.
(Target_powerpc::Relocate::relocate): Don't require nop following
calls for localentry:0 plt calls, and don't change nop.
This patch adds a new S/390 specific segment type: PT_S390_PGSTE. For
binaries marked with that segment the kernel will allocate 4k page
tables. The only user so far will be qemu.
ld/ChangeLog:
2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* Makefile.in: Add s390.em as build dependency.
* emulparams/elf64_s390.sh (EXTRA_EM_FILE): Add s390.em.
* emultempl/s390.em: New file.
* gen-doc.texi: Add documentation for --s390-pgste option.
* ld.texinfo: Likewise.
include/ChangeLog:
2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* elf/s390.h (PT_S390_PGSTE): Define macro.
binutils/ChangeLog:
2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* readelf.c (get_s390_segment_type): Add support for the new
segment type PT_S390_PGSTE.
(get_segment_type): Call get_s390_segment_type.
elfcpp/ChangeLog:
2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* elfcpp.h (enum PT): Add PT_S390_PGSTE to enum.
bfd/ChangeLog:
2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* elf-s390.h: New file.
* elf64-s390.c (struct elf_s390_link_hash_table): Add params
field.
(elf_s390_additional_program_headers): New function.
(elf_s390_modify_segment_map): New function.
(bfd_elf_s390_set_options): New function.
(elf_backend_additional_program_headers)
(elf_backend_modify_segment_map): Add macro definitions.
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.
For MIPS-64, the r_info field in the relocation format is
replaced by several individual fields, including r_sym and
r_type. To enable support for this format, I've refactored
target-independent code to remove almost all uses of the r_info
field. (I've left alone a couple of routines used only for
incremental linking, which I can update if/when the MIPS target
adds support for incremental linking.)
For routines that are already templated on a Classify_reloc class
(namely, gc_process_relocs, relocate_section, and
relocate_relocs), I've extended the Classify_reloc interface to
include sh_type (which no longer needs to be a separate template
parameter) as well as get_r_sym() and get_r_type() methods for
extracting the r_sym and r_type fields. For
scan_relocatable_relocs, I've extended the
Default_scan_relocatable_relocs class by converting it to a class
template with Classify_reloc as a template parameter. For the
remaining routines that need to access r_sym, I've added a
virtual Target::get_r_sym() method with an override for the MIPS
target.
In elfcpp, I've added Mips64_rel, etc., accessor classes and
corresponding internal data structures. The MIPS target uses
these new classes within its own Mips_classify_reloc class.
The Mips64_ accessor classes also expose the r_ssym, r_type2,
and r_type3 fields from the relocation.
These changes should be functionally the same for all but the
MIPS target.
elfcpp/
* elfcpp.h (Mips64_rel, Mips64_rel_write): New classes.
(Mips64_rela, Mips64_rela_write): New classes.
* elfcpp_internal.h (Mips64_rel_data, Mips64_rela_data): New structs.
gold/
* gc.h (get_embedded_addend_size): Remove sh_type parameter.
(gc_process_relocs): Remove sh_type template parameter.
Use Classify_reloc to access r_sym, r_type, and r_addend fields.
* object.h (Sized_relobj_file::split_stack_adjust): Add target
parameter.
(Sized_relobj_file::split_stack_adjust_reltype): Likewise.
* reloc-types.h (Reloc_types::copy_reloc_addend): (SHT_REL and SHT_RELA
specializations) Remove.
* reloc.cc (Emit_relocs_strategy): Rename and move to target-reloc.h.
(Sized_relobj_file::emit_relocs_scan): Call Target::emit_relocs_scan().
(Sized_relobj_file::emit_relocs_scan_reltype): Remove.
(Sized_relobj_file::split_stack_adjust): Add target parameter.
Adjust all callers.
(Sized_relobj_file::split_stack_adjust_reltype): Likewise. Call
Target::get_r_sym() to get r_sym field from relocations.
(Track_relocs::next_symndx): Call Target::get_r_sym().
* target-reloc.h (scan_relocs): Remove sh_type template parameter;
add Classify_reloc template parameter. Use for accessing r_sym and
r_type.
(relocate_section): Likewise.
(Default_classify_reloc): New class (renamed and moved from reloc.cc).
(Default_scan_relocatable_relocs): Remove sh_type template parameter.
(Default_scan_relocatable_relocs::Reltype): New typedef.
(Default_scan_relocatable_relocs::reloc_size): New const.
(Default_scan_relocatable_relocs::sh_type): New const.
(Default_scan_relocatable_relocs::get_r_sym): New method.
(Default_scan_relocatable_relocs::get_r_type): New method.
(Default_emit_relocs_strategy): New class.
(scan_relocatable_relocs): Replace sh_type template parameter with
Scan_relocatable_relocs class. Use it to access r_sym and r_type
fields.
(relocate_relocs): Replace sh_type template parameter with
Classify_reloc class. Use it to access r_sym and r_type fields.
* target.h (Target::is_call_to_non_split): Replace r_type parameter
with pointer to relocation. Adjust all callers.
(Target::do_is_call_to_non_split): Likewise.
(Target::emit_relocs_scan): New virtual method.
(Sized_target::get_r_sym): New virtual method.
* target.cc (Target::do_is_call_to_non_split): Replace r_type parameter
with pointer to relocation.
* aarch64.cc (Target_aarch64::emit_relocs_scan): New method.
(Target_aarch64::Relocatable_size_for_reloc): Remove.
(Target_aarch64::gc_process_relocs): Use Default_classify_reloc.
(Target_aarch64::scan_relocs): Likewise.
(Target_aarch64::relocate_section): Likewise.
(Target_aarch64::Relocatable_size_for_reloc::get_size_for_reloc):
Remove.
(Target_aarch64::scan_relocatable_relocs): Use Default_classify_reloc.
(Target_aarch64::relocate_relocs): Use Default_classify_reloc.
* arm.cc (Target_arm::Arm_scan_relocatable_relocs): Remove sh_type
template parameter.
(Target_arm::emit_relocs_scan): New method.
(Target_arm::Relocatable_size_for_reloc): Replace with...
(Target_arm::Classify_reloc): ...this.
(Target_arm::gc_process_relocs): Use Classify_reloc.
(Target_arm::scan_relocs): Likewise.
(Target_arm::relocate_section): Likewise.
(Target_arm::scan_relocatable_relocs): Likewise.
(Target_arm::relocate_relocs): Likewise.
* i386.cc (Target_i386::emit_relocs_scan): New method.
(Target_i386::Relocatable_size_for_reloc): Replace with...
(Target_i386::Classify_reloc): ...this.
(Target_i386::gc_process_relocs): Use Classify_reloc.
(Target_i386::scan_relocs): Likewise.
(Target_i386::relocate_section): Likewise.
(Target_i386::scan_relocatable_relocs): Likewise.
(Target_i386::relocate_relocs): Likewise.
* mips.cc (Mips_scan_relocatable_relocs): Remove sh_type template
parameter.
(Mips_reloc_types): New class template.
(Mips_classify_reloc): New class template.
(Target_mips::Reltype): New typedef.
(Target_mips::Relatype): New typedef.
(Target_mips::emit_relocs_scan): New method.
(Target_mips::get_r_sym): New method.
(Target_mips::Relocatable_size_for_reloc): Replace with
Mips_classify_reloc.
(Target_mips::copy_reloc): Use Mips_classify_reloc.
(Target_mips::gc_process_relocs): Likewise.
(Target_mips::scan_relocs): Likewise.
(Target_mips::relocate_section): Likewise.
(Target_mips::scan_relocatable_relocs): Likewise.
(Target_mips::relocate_relocs): Likewise.
(mips_get_size_for_reloc): New function, factored out from
Relocatable_size_for_reloc::get_size_for_reloc.
(Target_mips::Scan::local): Use Mips_classify_reloc.
(Target_mips::Scan::global): Likewise.
(Target_mips::Relocate::relocate): Likewise.
* powerpc.cc (Target_powerpc::emit_relocs_scan): New method.
(Target_powerpc::Relocatable_size_for_reloc): Remove.
(Target_powerpc::gc_process_relocs): Use Default_classify_reloc.
(Target_powerpc::scan_relocs): Likewise.
(Target_powerpc::relocate_section): Likewise.
(Powerpc_scan_relocatable_reloc): Convert to class template.
(Powerpc_scan_relocatable_reloc::Reltype): New typedef.
(Powerpc_scan_relocatable_reloc::reloc_size): New const.
(Powerpc_scan_relocatable_reloc::sh_type): New const.
(Powerpc_scan_relocatable_reloc::get_r_sym): New method.
(Powerpc_scan_relocatable_reloc::get_r_type): New method.
(Target_powerpc::scan_relocatable_relocs): Use
Powerpc_scan_relocatable_reloc.
(Target_powerpc::relocate_relocs): Use Default_classify_reloc.
* s390.cc (Target_s390::emit_relocs_scan): New method.
(Target_s390::Relocatable_size_for_reloc): Remove.
(Target_s390::gc_process_relocs): Use Default_classify_reloc.
(Target_s390::scan_relocs): Likewise.
(Target_s390::relocate_section): Likewise.
(Target_s390::Relocatable_size_for_reloc::get_size_for_reloc):
Remove.
(Target_s390::scan_relocatable_relocs): Use Default_classify_reloc.
(Target_s390::relocate_relocs): Use Default_classify_reloc.
* sparc.cc (Target_sparc::emit_relocs_scan): New method.
(Target_sparc::Relocatable_size_for_reloc): Remove.
(Target_sparc::gc_process_relocs): Use Default_classify_reloc.
(Target_sparc::scan_relocs): Likewise.
(Target_sparc::relocate_section): Likewise.
(Target_sparc::Relocatable_size_for_reloc::get_size_for_reloc):
Remove.
(Target_sparc::scan_relocatable_relocs): Use Default_classify_reloc.
(Target_sparc::relocate_relocs): Use Default_classify_reloc.
* tilegx.cc (Target_tilegx::emit_relocs_scan): New method.
(Target_tilegx::Relocatable_size_for_reloc): Remove.
(Target_tilegx::gc_process_relocs): Use Default_classify_reloc.
(Target_tilegx::scan_relocs): Likewise.
(Target_tilegx::relocate_section): Likewise.
(Target_tilegx::Relocatable_size_for_reloc::get_size_for_reloc):
Remove.
(Target_tilegx::scan_relocatable_relocs): Use Default_classify_reloc.
(Target_tilegx::relocate_relocs): Use Default_classify_reloc.
* x86_64.cc (Target_x86_64::emit_relocs_scan): New method.
(Target_x86_64::Relocatable_size_for_reloc): Remove.
(Target_x86_64::gc_process_relocs): Use Default_classify_reloc.
(Target_x86_64::scan_relocs): Likewise.
(Target_x86_64::relocate_section): Likewise.
(Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc):
Remove.
(Target_x86_64::scan_relocatable_relocs): Use Default_classify_reloc.
(Target_x86_64::relocate_relocs): Use Default_classify_reloc.
* testsuite/testfile.cc (Target_test::emit_relocs_scan): New method.
The ch_type field in struct Chdr_data<64> is 4 bytes, followed by a
4-byte padding. This change doesn't introduce any functional change
since only the lower 32 bits of the ch_type field are used.
PR gold/19060
* elfcpp.h (Chdr::get_ch_type): Change return type to Elf_Word.
* elfcpp_internal.h (Chdr_data<64>): Change ch_type to 4 bytes
and add ch_reserved.
Initial patch to enable gold aarch64 backend.
This patch is just a skeleton which almost does nothing.
It does not support ILP32 now.
gold/ChangeLog:
* aarch64.cc: New file
* Makefile.am (TARGETSOURCES): Add aarch64.cc
(ALL_TARGETOBJS): Add aarch64.$(OBJEXT)
* Makefile.in: Regenerate.
* configure.tgt: Add entries for aarch64*.
* configure.ac: Likewise.
* configure: Likewise.
elfcpp/ChangeLog:
* aarch64.h: New file. New enums for aarch64-elf64 relocations.
* elfcpp.h (EM_AARCH64, SHT_AARCH64_ATTRIBUTES, PT_AARCH64_ARCHEXT,
PT_AARCH64_UNWIND): New enum constant.
* elfcpp.h (enum SHT): Add SHT_GNU_INCREMENTAL_SYMTAB,
SHT_GNU_INCREMENTAL_RELOCS.
gold/ChangeLog:
* archive.cc: Include incremental.h.
(Archive::Archive): Initialize incremental_info_.
(Archive::include_member): Record archive members in incremental info.
(Add_archive_symbols::run): Record begin and end of an archive in
incremental info.
(Lib_group::include_member): Record objects in incremental info.
* archive.h (Incremental_archive_entry): Forward declaration.
(Archive::set_incremental_info): New member function.
(Archive::incremental_info): New member function.
(Archive::Unused_symbol_iterator): New class.
(Archive::unused_symbols_begin): New member function.
(Archive::unused_symbols_end): New member function.
(Archive::incremental_info_): New data member.
* incremental-dump.cc (find_input_containing_global): New function.
(dump_incremental_inputs): Dump new incremental info sections.
* incremental.cc: Include symtab.h.
(Output_section_incremental_inputs): New class.
(Sized_incremental_binary::do_find_incremental_inputs_sections): Support
new incremental info sections.
(Sized_incremental_binary::do_check_inputs): Likewise.
(Incremental_inputs::report_archive): Remove.
(Incremental_inputs::report_archive_begin): New function.
(Incremental_inputs::report_archive_end): New function.
(Incremental_inputs::report_object): New function.
(Incremental_inputs::finalize_inputs): Remove.
(Incremental_inputs::report_input_section): New function.
(Incremental_inputs::report_script): Rewrite.
(Incremental_inputs::finalize): Do nothing but finalize string table.
(Incremental_inputs::create_incremental_inputs_section_data): Remove.
(Incremental_inputs::sized_create_inputs_section_data): Remove.
(Incremental_inputs::create_data_sections): New function.
(Incremental_inputs::relocs_entsize): New function.
(Output_section_incremental_inputs::set_final_data_size): New function.
(Output_section_incremental_inputs::do_write): New function.
(Output_section_incremental_inputs::write_header): New function.
(Output_section_incremental_inputs::write_input_files): New function.
(Output_section_incremental_inputs::write_info_blocks): New function.
(Output_section_incremental_inputs::write_symtab): New function.
* incremental.h (Incremental_script_entry): Forward declaration.
(Incremental_object_entry): Forward declaration.
(Incremental_archive_entry): Forward declaration.
(Incremental_inputs): Forward declaration.
(Incremental_inputs_header_data): Remove.
(Incremental_inputs_header): Remove.
(Incremental_inputs_header_write): Remove.
(Incremental_inputs_entry_data): Remove.
(Incremental_inputs_entry): Remove.
(Incremental_inputs_entry_write): Remove.
(enum Incremental_input_type): Add INCREMENTAL_INPUT_ARCHIVE_MEMBER.
(Incremental_binary::find_incremental_inputs_sections): Add parameters.
(Incremental_binary::do_find_incremental_inputs_sections): Likewise.
(Sized_ncremental_binary::do_find_incremental_inputs_sections):
Likewise.
(Incremental_input_entry): New class.
(Incremental_script_entry): New class.
(Incremental_object_entry): New class.
(Incremental_archive_entry): New class.
(Incremental_inputs::Incremental_inputs): Initialize new data members.
(Incremental_inputs::report_inputs): Remove.
(Incremental_inputs::report_archive): Remove.
(Incremental_inputs::report_archive_begin): New function.
(Incremental_inputs::report_archive_end): New function.
(Incremental_inputs::report_object): Change prototype.
(Incremental_inputs::report_input_section): New function.
(Incremental_inputs::report_script): Change prototype.
(Incremental_inputs::get_reloc_count): New function.
(Incremental_inputs::set_reloc_count): New function.
(Incremental_inputs::create_data_sections): New function.
(Incremental_inputs::create_incremental_inputs_section_data): Remove.
(Incremental_inputs::inputs_section): New function.
(Incremental_inputs::symtab_section): New function.
(Incremental_inputs::relocs_section): New function.
(Incremental_inputs::get_stringpool): Add const.
(Incremental_inputs::command_line): Add const.
(Incremental_inputs::inputs): Remove.
(Incremental_inputs::command_line_key): New function.
(Incremental_inputs::input_file_count): New function.
(Incremental_inputs::input_files): New function.
(Incremental_inputs::relocs_entsize): New function.
(Incremental_inputs::sized_create_inputs_section_data): Remove.
(Incremental_inputs::finalize_inputs): Remove.
(Incremental_inputs::Input_info): Remove.
(Incremental_inputs::lock_): Remove.
(Incremental_inputs::inputs_): Change type.
(Incremental_inputs::inputs_map_): Remove.
(Incremental_inputs::current_object_entry_): New data member.
(Incremental_inputs::inputs_section_): New data member.
(Incremental_inputs::symtab_section_): New data member.
(Incremental_inputs::relocs_section_): New data member.
(Incremental_inputs::reloc_count_): New data member.
(Incremental_inputs_reader): New class.
(Incremental_symtab_reader): New class.
(Incremental_relocs_reader): New class.
* layout.cc (Layout::finalize): Move finalization of incremental info
and creation of incremental info sections to follow finalization of
symbol table. Set offsets for postprocessing sections.
(Layout::create_incremental_info_sections): Call
Incremental_inputs::create_data_sections. Add incremental symtab
and relocs sections. Set sh_entsize and sh_link fields. Arrange for
sections to layout after input sections.
* layout.h (struct Timespec): Forward declaration.
(Layout::incremental_inputs): Add const.
(Layout::create_incremental_info_sections): Add parameter.
* main.cc (main): Remove call to Incremental_inputs::report_inputs.
* object.cc: Include incremental.h.
(Relobj::finalize_incremental_relocs): New function.
(Sized_relobj::do_layout): Record input sections in incremental info.
* object.h (Object::output_section): New function.
(Object::output_section_offset): Moved from Relobj.
(Object::get_incremental_reloc_base): New function.
(Object::get_incremental_reloc_count): New function.
(Object::do_output_section): New function.
(Object::do_output_section_offset): Moved from Relobj.
(Object::do_get_incremental_reloc_base): New function.
(Object::do_get_incremental_reloc_count): New function.
(Object::Object): Initialize new data members.
(Relobj::output_section): Renamed do_output_section and moved to
protected.
(Relobj::output_section_offset): Moved to Object.
(Relobj::do_get_incremental_reloc_base): New function.
(Relobj::do_get_incremental_reloc_count): New function.
(Relobj::allocate_incremental_reloc_counts): New function.
(Relobj::count_incremental_reloc): New function.
(Relobj::finalize_incremental_relocs): New function.
(Relobj::next_incremental_reloc_index): New function.
(Relobj::reloc_counts_): New data member.
(Relobj::reloc_bases_): New data member.
(Sized_relobj::do_relocate_sections): Add parameter. Change caller.
(Sized_relobj::relocate_sections): Add parameter. Change all callers.
(Sized_relobj::incremental_relocs_scan): New function.
(Sized_relobj::incremental_relocs_scan_reltype): New function.
(Sized_relobj::incremental_relocs_write): New function.
(Sized_relobj::incremental_relocs_write_reltype): New function.
* plugin.cc (Plugin_manager::add_input_file): Rewrite test for
incremental link.
* readsyms.cc (Read_symbols::do_read_symbols): Move reporting of
archives and object files elsewhere.
(Add_symbols::run): Report object files here.
(Finish_group::run): Report end of archive at end of group.
* reloc.cc: Include layout.h, incremental.h.
(Sized_relobj::do_read_relocs): Need relocations for incremental link.
(Sized_relobj::do_scan_relocs): Record relocations for incremental link.
(Sized_relobj::incremental_relocs_scan): New function.
(Sized_relobj::incremental_relocs_scan_reltype): New function.
(Sized_relobj::do_relocate_sections): Write incremental relocations.
(Sized_relobj::incremental_relocs_write): New function.
(Sized_relobj::incremental_relocs_write_reltype): New function.
* script.cc (read_input_script): Rewrite test for incremental link.
Change call to Incremental_inputs::report_script.
* symtab.h (Symbol_table::first_global_index): New function.
(Symbol_table::output_count): New function.
* elfcpp.h (PN_XNUM): Define.
gold/:
* output.cc (Output_section_headers::do_sized_write): Write large
segment count to sh_info field.
(Output_file_header::do_sized_write): For large segment count,
write PN_XNUM to e_phnum field.
gnu_unique_object.
* doc/as.texinfo: Document new feature of .type directive.
* NEWS: Mention support for gnu_unique_object symbol type.
* common.h (STB_GNU_UNIQUE): Define.
* NEWS: Mention the linker's support for symbols with a binding of
STB_GNU_UNIQUE.
* gas/elf/type.s: Add unique global symbol definition.
* gas/elf/type.e: Add expected readelf output for global unique
symbol.
* elfcpp.h (enum STB): Add STB_GNU_UNIQUE.
* readelf.c (get_symbol_binding): For Linux targeted files return
UNIQUE for symbols with the STB_GNU_UNIQUE binding.
* doc/binutils.texi: Document the meaning of the 'u' symbol
binding in the output of nm and objdump --syms.
* elf-bfd.h (struct elf_link_hash_entry): Add unique_global field.
* elf.c (swap_out_syms): Set binding to STB_GNU_UNIQUE for symbols
with the BSF_GNU_UNIQUE flag bit set.
* elfcode.h (elf_slurp_symbol_table): Set the BSF_GNU_UNIQUE flag
for symbols with STB_GNU_UNIQUE binding.
* elflink.c (_bfd_elf_merge_symbol): Set unique_global for symbols
with the STB_GNU_UNIQUE binding.
(elf_link_add_object_symbols): Set the BSF_GNU_UNIQUE flag for
symbols with STB_GNU_UNIQUE binding. Set STB_GNU_UNIQUE for
symbols with the unique_global field set.
(elf_link_output_extsym): Set unique_global field for symbols with
the STB_GNU_UNIQUE binding.
* syms.c (struct bfd_symbol): Define BSF_GNU_UNIQUE flag bit.
(bfd_print_symbol_vandf): Print a 'u' character for BSF_GNU_UNIQUE
symbols.
(bfd_decode_symclass): Return a 'u' character for BSF_GNU_UNIQUE
symbols.
* bfd-in2.h: Regenerate.
2009-04-30 Nick Clifton <nickc@redhat.com>
* common.h (STT_GNU_IFUNC): Define.
elfcpp
2009-04-30 Nick Clifton <nickc@redhat.com>
* (enum STT): Add STT_GNU_IFUNC.
gas
2009-04-30 Nick Clifton <nickc@redhat.com>
* config/obj-elf.c (obj_elf_type): Add support for a
gnu_indirect_function type.
* config/tc-i386.c (tc_i386_fix_adjustable): Do not adjust fixups
against indirect function symbols.
* doc/as.texinfo (.type): Document the support for the
gnu_indirect_function symbol type.
* NEWS: Mention the new feature.
gas/testsuite
2009-04-30 Nick Clifton <nickc@redhat.com>
* gas/elf/elf.exp: Extend type test to include an ifunc symbol.
Provide an alternative test for targets which do not support ifunc
symbols.
(type.s): Add entry for an ifunc symbol.
(type.e): Add ifunc entry to expected symbol dump.
(section2.e-armelf): Add entry for ifunc symbol.
(type-noifunc.s): New file.
(type-noifunc.e): New file.
bfd/
2009-04-30 Nick Clifton <nickc@redhat.com>
* elf-bfd.h (struct bfd_elf_section_data): Add indirect_relocs
section pointer.
(struct elf_obj_data): Add has_ifunc_symbols boolean.
* elf.c (swap_out_syms): Convert BSF_GNU_INDIRECT_FUNCTION flags
into a STT_GNU_IFUNC symbol type.
(_bfd_elf_is_function_type): Accept STT_GNU_IFUNC as a function
type.
(_bfd_elf_set_osabi): Set the osasbi field to ELFOSABI_LINUX if
the binary contains ifunc symbols.
* elfcode.h (elf_slurp_symbol_table): Translate the STT_GNU_IFUNC
symbol type into a BSF_GNU_INDIRECT_FUNCTION flag.
* elf32-i386.c (is_indirect_function): New function.
(elf_i386_check_relocs): Create an ifunc output section.
(allocate_dynrelocs): Create dynamic relocs in the ifunc output
section if necessary.
(elf_i386_relocate_section): Emit a reloc against an ifunc symbol
if necessary.
(elf_i386_add_symbol_hook): New function. Set the
has_ifunc_symbols field of the elf_obj_data structure if an ifunc
symbol is encountered.
(elf_backend_post_process_headers): Define.
(elf_backend_add_symbol_hook): Define.
(elf_i386_post_process_headers): Rename to
elf_i388_fbsd_post_process_headers.
* elf64-x86_64.c (IS_X86_64_PCREL_TYPE): New macro.
(is_indirect_function): New function.
(elf64_x86_64_check_relocs): Create an ifunc output section.
(allocate_dynrelocs): Create dynamic relocs in the ifunc output
section if necessary.
(elf64_x86_64_relocate_section): Emit a reloc against an ifunc
symbol if necessary.
(elf_i386_add_symbol_hook): Set the has_ifunc_symbols field of the
elf_obj_data structure if an ifunc symbol is encountered.
(elf_backend_post_process_headers): Define.
* elflink.c (_bfd_elf_adjust_dynamic_symbol): Always create a PLT
if we have ifunc symbols to handle.
(get_ifunc_reloc_section_name): New function. Computes the name
for an ifunc section.
(_bfd_elf_make_ifunc_reloc_section): New function. Creates a
section to hold ifunc relocs.
* syms.c (BSF_GNU_INDIRECT_FUNCTION): Define.
(bfd_print_symbol_vandf): Handle ifunc symbols.
(bfd_decode_symclass): Likewise.
* bfd-in2.h: Regenerate.
binutils
2009-04-30 Nick Clifton <nickc@redhat.com>
* readelf.c (dump_relocations): Display a relocation against an
ifunc symbol as if it were a function invocation.
(get_symbol_type): Handle STT_GNU_IFUNC.
ld
2009-04-30 Nick Clifton <nickc@redhat.com>
* NEWS: Mention support for IFUNC symbols.
ld/testsuite
2009-04-30 Nick Clifton <nickc@redhat.com>
* ld-ifunc: New directory.
* ld-ifunc/ifunc.exp: New file: Run the IFUNC tests.
* ld-ifunc/prog.c: New file.
* ld-ifunc/lib.c: New file.
* common.h (STT_IFUNC): Define.
elfcpp/
* elfcpp.h (enum STT): Add STT_IFUNC.
bfd/
* syms.c (struct bfd_symbol): Add new flag BSF_INDIRECT_FUNCTION.
Remove redundant flag BFD_FORT_COMM_DEFAULT_VALUE. Renumber flags
to remove gaps.
(bfd_print_symbol_vandf): Return 'i' for BSF_INDIRECT_FUNCTION.
(bfd_decode_symclass): Likewise.
* elf.c (swap_out_syms): Translate BSF_INDIRECT_FUNCTION into
STT_IFUNC.
(elf_find_function): Treat STT_IFUNC in the same way as STT_FUNC.
(_bfd_elf_is_function_type): Likewise.
* elf32-arm.c (arm_elf_find_function): Likewise.
(elf32_arm_adjust_dynamic_symbol): Likewise.
(elf32_arm_swap_symbol_in): Likewise.
(elf32_arm_additional_program_headers): Likewise.
* elf32-i386.c (is_indirect_symbol): New function.
(elf_i386_check_relocs): Also generate dynamic relocs for
relocations against STT_IFUNC symbols.
(allocate_dynrelocs): Likewise.
(elf_i386_relocate_section): Likewise.
* elf64-x86-64.c (is_indirect_symbol): New function.
(elf64_x86_64_check_relocs): Also generate dynamic relocs for
relocations against STT_IFUNC symbols.
(allocate_dynrelocs): Likewise.
(elf64_x86_64_relocate_section): Likewise.
* elfcode.h (elf_slurp_symbol_table): Translate STT_IFUNC into
BSF_INDIRECT_FUNCTION.
* elflink.c (_bfd_elf_adjust_dynamic_reloc_section): Add support
for STT_IFUNC symbols.
(get_ifunc_reloc_section_name): New function.
(_bfd_elf_make_ifunc_reloc_section): New function.
* elf-bfd.h (struct bfd_elf_section_data): Add indirect_relocs field.
* bfd-in2.h: Regenerate.
gas/
* config/obj-elf.c (obj_elf_type): Add support for STT_IFUNC type.
* doc/as.texinfo: Document new feature.
* NEWS: Mention new feature.
gas/testsuite/
* gas/elf/type.s: Add test of STT_IFUNC symbol type.
* gas/elf/type.e: Update expected disassembly.
* gas/elf/elf.exp: Update grep of symbol types.
ld/
* NEWS: Mention new feature.
* pe-dll.c (process_def_file): Replace use of redundant
BFD_FORT_COMM_DEFAULT_VALUE with 0.
* scripttempl/elf.sc: Add .rel.ifunc.dyn and .rela.ifunc.dyn
sections.
ld/testsuite/
* ld-mips-elf/reloc-1-n32.d: Updated expected output for reloc
descriptions.
* ld-mips-elf/reloc-1-n64.d: Likewise.
* ld-i386/ifunc.d: New test.
* ld-i386/ifunc.s: Source file for the new test.
* ld-i386/i386.exp: Run the new test.
Alan Modra
Cary Coutant
H.J. Lu
Andreas Krebbel
Dimitar Dimitrov
Vladimir Radosavljevic
Matthew Fortune
Jing Yu
Christian Svensson
Cary Coutant
Walter Lee
Ian Lance Taylor
Thomas Schwinge
Rainer Orth
Doug Kwan
Nick Clifton
David Edelsohn
David S. Miller
Ian Lance Taylor