* dynobj.cc (Sized_dynobj::find_dynsym_sections): If there is no
dynamic symbol table, use the normal symbol table.
(Sized_dynobj::do_read_symbols): Remove assertion about type of
symbol table.
PR 11063
* i386.cc (class Target_i386): Change return type of plt_section
to be non-const.
(class Output_data_plt_i386): Add tls_desc_rel_ field.
(Output_data_plt_i386::Output_data_plt_i386): Initialize
tls_desc_rel_ field.
(Output_data_plt_i386::rel_tls_desc): New function.
(Target_i386::rel_tls_desc_section): New function.
(Target_i386::Scan::local): Rewrite R_386_TLS_GOTDESC handling.
(Target_i386::Scan::global): For R_386_TLS_GOTDESC put
R_386_TLS_DESC reloc in rel_tls_desc_section.
* x86_64.cc (class Target_x86_64): Add tlsdesc_reloc_info_ field.
Define struct Tlsdesc_info.
(Target_x86_64::Target_x86_64): Initialize tlsdesc_reloc_info_.
(Target_x86_64::do_reloc_symbol_index): New function.
(Target_x86_64::add_tlsdesc_info): New function.
(class Output_data_plt_x86_64): Add tlsdesc_rel_ field.
(Output_data_plt_x86_64::Output_data_plt_x86_64): Initialize
tlsdesc_rel_ field.
(Output_data_plt_x86_64::rela_plt): Rename from rel_plt. Change
all callers.
(Output_data_plt_x86_64::rela_tlsdesc): New function.
(Target_x86_64::rela_tlsdesc_section): New function.
(Target_x86_64::Scan::local): Rewrite R_X86_64_GOTPC32_TLSDESC
handling.
(Target_x86_64::Scan::global): For R_X86_64_GOTPC32_TLSDESC put
(Target_x86_64::do_reloc_addend): New function.
R_X86_64_TLSDESC reloc in rela_tlsdesc_section.
* output.h (class Output_reloc) [SHT_REL]: Add new constructor
declarations. Define TARGET_CODE. Add arg field to u1_ union.
(Output_reloc::type): New function.
(Output_reloc::is_local_section_symbol): Check for TARGET_CODE.
(Output_reloc::is_target_specific): New function.
(Output_reloc::target_arg): New function.
(class Output_reloc) [SHT_RELA]: Add four new constructors for
absolute relocs and target specific relocs.
(class Output_data_reloc) [SHT_REL]: Add add_absolute and
add_target_specific.
(class Output_data_reloc) [SHT_RELA]: Likewise.
* output.cc (Output_reloc::Output_reloc): Add four new versions
for absolute relocs and target specific relocs.
(Output_reloc::set_needs_dynsym_index): Add TARGET_CODE case.
(Output_reloc::get_symbol_index): Likewise.
(Output_reloc::local_section_offset): Check that local_sym_index_
is not TARGET_CODE or 0.
(Output_reloc::symbol_value): Likewise.
(Output_reloc::write) [SHT_RELA]: Call target for target specific
reloc.
* target.h (class Target): Add reloc_symbol_index and reloc_addend
functions. Add do_reloc_symbol_index and do_reloc_addend virtual
functions.
* layout.cc (add_target_dynamic_tags): Use output section for
DT_PLTRELSZ and DT_JMPREL.
* arm.cc (Insn_template::Type): New enum value THUMB16_SPECIAL_TYPE.
(Insn_template::thumb16_bcond_insn): New method declaration.
(Insn_template): Fix spelling.
(Stub::thumb16_special): New method declaration.
(Stub::do_write): Define virtual method which was previously pure
virtual.
(Stub::do_thumb16_special): New method declaration.
(Stub::do_fixed_endian_write): New template member.
(Reloc_stub::do_write): Remove.
(Reloc_stub::do_fixed_endian_write): Remove.
(Cortex_a8_stub): New class definition.
(Stub_factory::make_cortex_a8_stub): New method definition.
(Stub_factory::Stub_factory): Add missing static storage class
qualifier for elf32_arm_stub_a8_veneer_blx.
(Garbage_collection::cident_sections): New function.
(Garbage_collection::add_cident_section): New function.
(Garbage_collection::cident_sections_): New member.
(gc_process_relocs): Add references to sections whose names are C
identifiers.
* gold.h (cident_section_start_prefix): New constant.
(cident_section_stop_prefix): New constant.
(is_cident): New function.
* layout.cc (Layout::define_section_symbols): Replace string constants
with the newly defined constants.
* object.cc (Sized_relobj::do_layout): Track sections whose names are
C identifiers.
* testsuite/Makefile.am: Add gc_orphan_section_test.
* testsuite/Makefile.in: Regenerate.
* testsuite/gc_orphan_section_test.cc: New file.
* testsuite/gc_orphan_section_test.sh: New file.
* options.cc (General_options::parse_section_start): New function.
(General_options::section_start): New function.
(General_options::General_options): Initialize all members.
* options.h: Include <map>
(class General_options): Add --section-start. Add section_starts_
member.
* layout.cc (Layout::attach_allocated_section_to_segment): If
--section-start was used, set the address of the segment. Remove
local sort_sections.
(Layout::relaxation_loop_body): If the address of the load segment
has been set by --section-start, don't use it.
* output.h (Output_segment::update_flags_for_output_section): New
function.
* output.cc (Output_segment::add_output_section): Call
update_flags_for_output_section.
to is_default_version. Rename insdef to insdefault.
(Symbol_table::add_from_relobj): Rename def to is_default_version
and local to is_forced_local.
(Symbol_table::add_from_pluginobj): Likewise.
(Symbol_table::add_from_dynobj): Likewise.
(Symbol_table::define_special_symbol): Rename insdef to
insdefault.
* options.h (class General_options): Add
--allow-multiple-definition and -z muldefs.
* resolve.cc (Symbol_table::should_override): Don't warn about a
multiple symbol definition if --allow-multiple-definition or -z
muldefs.
* options.h (class General_options): Add --add-needed and
--copy-dt-needed-entries. Tweak --as-needed help entry.
* object.cc (Input_objects::check_dynamic_dependencies): Give an
error if --copy-dt-needed-entries aka --add-needed is used and
would cause a change in behaviour.
check for .text or .gnu.linkonce.t sections.
* icf.cc (Icf::find_identical_sections): Ditto.
Change the detection for mangled function name within the section
name.
* icf.h (is_section_foldable_candidate): New function.
* common.cc (Sort_commons::operator()): Stabilize sort when both
entries are NULL.
(Symbol_table::do_allocate_commons_list): When allocating common
symbols, skip a symbol which is no longer common.
* symtab.h (Symbol::is_common): Test whether the symbol comes from
an object before checking its type.
* testsuite/common_test_2.c: New file.
* testsuite/common_test_3.c: New file.
* testsuite/Makefile.am (check_PROGRAMS): Add common_test_2.
(common_test_2_SOURCES, common_test_2_DEPENDENCIES): Define.
(common_test_2_LDFLAGS, common_test_2_LDADD): Define.
(common_test_2_pic.o, common_test_2.so): New targets.
(common_test_3_pic.o, common_test_3.so): New targets.
* testsuite/Makefile.in: Rebuild.
* script.cc (read_input_script): If we see a new SECTIONS clause,
and we have added an input section, give an error.
* layout.h (class Layout): Add have_added_input_section function.
Add have_added_input_section_ field.
* layout.cc (Layout::Layout): Initialize
have_added_input_section_.
(Layout::layout): Set have_added_input_section_.
(Layout::layout_eh_frame): Likewise.
* symtab.cc (Symbol_table::add_from_relobj): When not exporting
symbols from this object, don't change the visibility of an
undefined symbol.
* testsuite/exclude_libs_test_1.c (lib1_ref): New function.
* script.h (class Version_script_info): Define Language enum.
Update declarations. Define Glob, Exact, and Lookup types. Add
new fields globals_, locals_, and is_finalized_.
* script.cc: Various formatting fixes.
(class Parser_closure): Change language_stack_ from a vector of
std::string to one of Version_script_info::Language. Adjust all
uses accordingly.
(class Lazy_demangler): Remove.
(struct Version_expression): Change language from std::string to
Version_script_info::Language.
(Version_script_info::Version_script_info): New function.
(Version_script_info::~Version_script_info): Don't call clear.
(Version_script_info::finalize): New function.
(Version_script_info::build_lookup_tables): New function.
(Version_script_info::build_expression_list_lookup): New
function.
(Version_script_info::get_symbol_version_helper): Rewrite to use
lookup tables.
(Version_script_info::print_expression_list): Adjust to use
Version_script_info::Language.
(script_push_lex_into_version_mode): Check that the version script
has not been finalized.
(version_script_push_lang): Change language string to
Version_script_info::Language.
* options.cc (Command_line::version_script): New function.
* options.h (class General_options): Add finalize_dynamic_list
function. Change version_script from declaration to definition.
* testsuite/ver_test_4.script: Remove duplicate def of t2_2.
* testsuite/version_script.map: Remove duplicate def of foo.
* testsuite/Makefile.am (ver_matching_def.so): Depend upon
version_script.map.
* testsuite/Makefile.in: Rebuild.
* options.h (class General_options): Add -x/--discard-all.
* object.cc (Sized_relobj::do_count_local_symbols): Handle
--discard-all. If the local symbol needs a dynamic entry, check
that before handling --discard-locals.
* output.cc (Output_segment::Output_segment): If PT_TLS, set the
flags to PF_R.
(Output_segment::add_output_section): Don't change the flags if
the type is PT_TLS.
* dynobj.cc (Dynobj::create_gnu_hash_table): Add symbols to the
GNU hash table if they need a dynamic value. Otherwise, don't add
them if they are defined in a dynamic object or are forced local.
* symtab.h (Symbol::needs_dynsym_entry): A symbol in both a
regular and a dynamic object only needs a dynamic symbol table
entry if it is externally visible.
* output.h (class Output_section): Add is_entsize_zero_ field.
* output.cc (Output_section::Output_section): Initialize
is_entsize_zero_.
(Output_section::set_entsize): If two different entsizes are
requested, force it to zero.
(Output_section::add_input_section): Set flags for .debug_str
before updating section flags. Set entsize.
(Output_section::update_flags_for_input_section): Set SHF_MERGE
and SHF_STRING if all input sections have those flags.
