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* expression.cc (class Segment_start_expression): New class definition.
(Segment_start_expression::value): New method definition.
(script_exp_function_segment_start): Return a new
Segment_start_expression.
* gold/script-c.h (script_saw_segment_start_expression): New function
prototype.
* script-sections.cc (Script_sections::Script_sections): Initialize
SAW_SEGMENT_START_EXPRESSION_ to false.
(Script_sections::set_section_addresses): Use -Ttext, -Tdata
and -Tbbs options to specify section addresses if given in
command line and no SEGMENT_START expression is seen in a script.
* script-sections.h (Script_sections::saw_segment_start_expression,
Script_sections::set_saw_segment_start_expression): New method
definition.
(Script_sections::saw_segment_start_expression_): New data member
declaration.
* script.cc (script_saw_segment_start_expression): New function.
* yyscript.y (SEGMENT_START): Call script_saw_segment_start_expression.
* testsuite/Makefile.am (check_SCRIPTS): Add script_test_6.sh,
script_test_7.sh and script_test_8.sh.
(check_DATA): Add script_test_6.stdout, script_test_7.stdout and
script_test_8.stdout.
(MOSTLYCLEANFILES): Add script_test_6, script_test_7 and script_test_8.
(script_test_6, script_test_6.stdout, script_test_7,
script_test_7.stdout, script_test_8, script_test_8.stdout): New rules.
* Makefile.in: Regenerate.
* testsuite/script_test_6.sh: New file.
* testsuite/script_test_6.t: Same.
* testsuite/script_test_7.sh: Same.
* testsuite/script_test_7.t: Same.
* testsuite/script_test_8.sh: Same.
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* yyscript.y: Parse TARGET.
* script.cc (script_set_target): New function.
* script-c.h (script_set_target): Declare.
* options.cc (General_options::string_to_object_format): Rename
from string_to_object_format in anonymous namespace. Change
callers.
* options.h (class General_options): Declare
string_to_object_format.
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(extern_name_list, extern_name_list_body): New nonterminals.
* script.cc (script_add_extern): Define.
* script-c.h (script_add_extern): Declare.
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(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
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set tls_segment_ or relro_segment_.
(Layout::make_output_segment): Set tls_segment_ and relro_segment_
when appropriate.
* output.h (Output_section::clear_is_relro): New function.
* output.cc (Output_segment::add_output_section): Handle SHF_TLS
sections specially even when output_data_ is empty.
(Output_segment::maximum_alignment): When first section is relro,
only force alignment for PT_LOAD segments.
* script.cc (script_data_segment_align): New function.
(script_data_segment_relro_end): New function.
* script-c.h (script_data_segment_align): Declare.
(script_data_segment_relro_end): Declare.
* script-sections.h (class Script_sections): Declare
data_segment_align and data_segment_relro_end. Add fields
segment_align_index_ and saw_relro_end_.
* script-sections.cc (class Sections_element): Add set_is_relro
virtual function. Add new bool* parameter to place_orphan_here.
Add get_output_section virtual function.
(class Output_section_definition): Add set_is_relro. Add new
bool* parameter to place_orphan_here. Add get_output_section.
Add is_relro_ field.
(Output_section_definition::Output_section_definition): Initialize
evaluated_address_, evaluated_load_address, evaluated_addralign_,
and is_relro_ fields.
(Output_section_definition::place_orphan_here): Add is_relro
parameter.
(Output_section_definition::set_section_addresses): Set relro for
output section.
(Output_section_definition::alternate_constraint): Likewise.
(class Orphan_output_section): Add new bool* parameter to
place_orphan_here. Add get_output_section.
(Orphan_output_section::place_orphan_here): Add is_relro
parameter.
(Script_sections::Script_sections): Initialize
data_segment_align_index_ and saw_relro_end_.
(Script_sections::data_segment_align): New function.
(Script_sections::data_segment_relro_end): New function.
(Script_sections::place_orphan): Set or clear is_relro.
(Script_sections::set_section_addresses): Force alignment of first
TLS section.
* yyscript.y (exp): Call script_data_segment_align and
script_data_segment_relro_end.
* testsuite/relro_script_test.t: New file.
* testsuite/relro_test.cc (using_script): Declare.
(t1, t2): Test using_script.
* testsuite/Makefile.am (check_PROGRAMS): Add relro_script_test.
(relro_script_test_SOURCES): Define.
(relro_script_test_DEPENDENCIES): Define.
(relro_script_test_LDFLAGS): Define.
(relro_script_test_LDADD): Define.
(relro_script_test.so): New target.
* testsuite/Makefile.in: Rebuild.
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script items.
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scripts, and handle extern "C++" in the middle of a block.
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scripts.
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