[GOLD][PATCH] Remove Output_section::Simple_input_section class.

[=?big5?b?RG91ZyBLd2FuICjD9q62vHcp?= <dougkwan at google dot com>]

Hi,

    This patch removes Output_section::Simple_input_section class and
replaces uses of it with equivalent code using
Output_section::Input_section.  As we discussed previously, I need to
export merge sections in Output_section using the get_input_sections
method.  Instead of extending Simple_input_section to handle merge
sections, it is simpler just use Input_section in the
get_input_sections interface.  We can also avoid conversion between
Simple_input_section and Input_section.  This affects some code
scripts processing and the relaxation code in the ARM back-end.  The
patch adjusts affected code accordingly.

   The patch has been tested with the full gold test suite on x86_64
on hardware and ARM on qemu.

-Doug

2010-05-14  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_input_section::original_size): New method.
        (Arm_input_section::do_output_offset): Remove static cast.
        (Arm_input_section::original_size_): Change type to off_t.
        (Arm_input_section::set_final_data_size): Do not set address and
        offset of stub table.
        (Arm_output_section::fix_exidx_coverage): Change use of of
        Output_section::Simple_input_section to that of
        Output_section::Input_section.
        (Target_arm::do_relax): Set addresses and file offsets of Stub_tables
        except for the first pass.
        * output.cc (Output_section::get_input_sections): Change type of
        input_sections to std::list<Input_section>.
        (Output_section::add_script_input_section): Rename from
        Output_section::add_simple_input_section.  Change type of SIS
        parameter from Simple_input_section to Input_section.
        * output.h (Output_section::Simple_input_section): Remove class.
        (Output_section::Input_section): Change class visibility to public.
        (Output_section::Input_section::addralign): Use stored alignments
        for special input sections if set.
        (Output_section::Input_section::set_addralign): New method.
        (Output_section::get_input_sections): Change parameter type from
        list of Simple_input_section to list of Input_section.
        (Output_section::add_script_input_section): Rename from
        Output_section::add_simple_input_section. Change first parameter's
        type from Simple_input_section to Input_section and remove the
        second and third parameters.
        * script-sections.cc (Input_section::Input_section_list): Change
        type to list of Output_section::Input_section/
        (Input_section_info::Input_section_info): Change parameter type of
        INPUT_SECTION to Output_section::Input_section.
        (Input_section_info::input_section): Change return type.
        (Input_section_info::input_section_): Change type to
        Output_section::Input_section.
        (Output_section_element_input::set_section_addresses): Adjust code
        to use Output_section::Input_section instead of
        Output_section::Simple_input_section.  Adjust code for renaming
        of Output_section::add_simple_input_section.
        (Orphan_output_section::set_section_addresses): Ditto.

Attachment: patch-input-section.txt
Description: Text document