[gold/dwp patch] Revert support for dwp v2 format

[Cary Coutant <ccoutant at google dot com>]

I committed this patch a few months ago to change dwp to generate
version 2 of the DWARF package file format, but I should have waited
until the GDB support was complete. As there are now people who would
like to use dwp files with GDB, I've reverted the patch so that dwp
will now generate and consume version 1. I'll restore the v2 patch
when GDB support is complete.

-cary

2013-08-07  Cary Coutant  <ccoutant@google.com>

gold/
        Revert support for v2 DWP files:

        2013-03-01  Cary Coutant  <ccoutant@google.com>

            Add dwp support for v2 DWARF package file format.
            * dwarf_reader.cc (Dwarf_info_reader::visit_type_unit): Add
            tu_length parameter.  Adjust all callers.
            * dwarf_reader.h (Dwarf_info_reader::visit_type_unit): Likewise.
            * dwp.cc: Include dwarf.h.
            (Section_bounds): New struct type.
            (Unit_set): New struct type.
            (Dwo_file::Dwo_file): Initialize new data member.
            (Dwo_file::read_compunit_index, Dwo_file::read_typeunit_index):
            Combine and rename to...
            (Dwo_file::read_unit_index): ...this.
            (Dwo_file::sized_read_compunit_index)
            (Dwo_file::sized_read_typeunit_index): Combine and rename to...
            (Dwo_file::sized_read_unit_index): ...this.
            (Dwo_file::copy_section): Remove section_name, is_str_offsets
            parameters; add section_id parameter.
            (Dwo_file::add_cu_set, Dwo_file::add_tu_set): Combine and
rename to...
            (Dwo_file::add_unit_set): ...this.
            (Dwo_file::shndx_map_): Remove.
            (Dwo_file::sect_offsets_): New data member.
            (Dwp_output_file::Dwp_output_file): Initialize new data members.
            (Dwp_output_file::add_section): Rename to...
            (Dwp_output_file::add_contribution): ...this.
            (Dwp_output_file::add_cu_set): Combine parameters into a struct.
            (Dwp_output_file::add_tu_set): Likewise.
            (Dwp_output_file::Contribution): New type.
            (Dwp_output_file::Section::contributions): New data member.
            (Dwp_output_file::Cu_or_tu_set): Remove.
            (Dwp_output_file::Section::Section): New ctor.
            (Dwp_output_file::Dwp_index::Shndx_pool): Remove.
            (Dwp_output_file::Dwp_index::Section_table): New type.
            (Dwp_output_file::Dwp_index::Dwp_index): Initialize new
data members.
            (Dwp_output_file::Dwp_index::enter_set): Change type of "set"
            parameter.
            (Dwp_output_file::Dwp_index::shndx_pool): Remove.
            (Dwp_output_file::Dwp_index::shndx_pool_end): Remove.
            (Dwp_output_file::Dwp_index::section_table): New member function.
            (Dwp_output_file::Dwp_index::section_table_end): New
member function.
            (Dwp_output_file::Dwp_index::shndx_pool_size): Remove.
            (Dwp_output_file::Dwp_index::section_table_rows): New
member function.
            (Dwp_output_file::Dwp_index::section_table_cols): New
member function.
            (Dwp_output_file::Dwp_index::shndx_pool_): Remove.
            (Dwp_output_file::Dwp_index::section_table_): New data member.
            (Dwp_output_file::Dwp_index::section_mask_): New data member.
            (Dwp_output_file::add_output_section): New member function.
            (Dwp_output_file::write_new_section): New member function.
            (Dwp_output_file::write_contributions): New member function.
            (Dwp_output_file::section_id_map_): New data member.
            (class Dwo_id_info_reader): Remove.
            (class Unit_reader): New class.
            (get_dwarf_section_name): New function.
            (Dwo_file::read_executable): Adjust initializations of class data.
            (Dwo_file::read): Add support for v2 package file format.
            (Dwo_file::read_unit_index): Likewise.
            (Dwo_file::sized_read_unit_index): Likewise.
            (Dwo_file::copy_section): Likewise.
            (Dwo_file::add_unit_set): Likewise.
            (Dwp_output_file::add_output_section): Likewise.
            (Dwp_output_file::add_contribution): Likewise.
            (Dwp_output_file::Dwp_index::find_or_add): Use row index to check
            for empty slot.
            (Dwp_output_file::Dwp_index::enter_set): Add support for v2 package
            file format.
            (Dwp_output_file::Dwp_index::grow): Use row index to check for empty
            slot.
            (Dwp_output_file::initialize): Remove unused function.
            (Dwp_output_file::finalize): Add support for v2 package file format.
            (Dwp_output_file::write_index): Likewise.
            * gdb-index.cc (Gdb_index_info_reader::visit_type_unit): Adjust
            function prototype.

Attachment: dwp-revert-v2-patch.txt
Description: Text document