Re: [gold][patch] Add support for reading compressed debug sections

[Cary Coutant <ccoutant at google dot com>]

> This has been only minimally tested on x86_64, so I'm not looking for
> approval to commit just yet, but I wanted to make it available for
> review now. I'll be doing more testing tomorrow.

I removed a debug printf and fixed a couple of bugs. Here's an updated patch...

-cary

        * compressed_output.cc (zlib_decompress): New function.
        (get_uncompressed_size): New function.
        (decompress_input_section): New function.
        * compressed_output.h (get_uncompressed_size): New function.
        (decompress_input_section): New function.
        * dwarf_reader.cc (Sized_dwarf_line_info::Sized_dwarf_line_info)
        Handle compressed debug sections.
        * layout.cc (is_compressed_debug_section): New function.
        (Layout::output_section_name): Map compressed section names to
        canonical names.
        * layout.h (is_compressed_debug_section): New function.
        (is_debug_info_section): Recognize compressed debug sections.
        * merge.cc: Include compressed_output.h.
        (Output_merge_data::do_add_input_section): Handle compressed
        debug sections.
        (Output_merge_string::do_add_input_section): Handle compressed
        debug sections.
        * object.cc: Include compressed_output.h.
        (Sized_relobj::Sized_relobj): Initialize new data members.
        (build_compressed_section_map): New function.
        (Sized_relobj::do_read_symbols): Handle compressed debug sections.
        * object.h (Object::section_is_compressed): New method.
        (Object::do_section_is_compressed): New method.
        (Sized_relobj::Compressed_section_map): New type.
        (Sized_relobj::do_section_is_compressed): New method.
        (Sized_relobj::compressed_sections_): New data member.
        * output.cc (Output_section::add_input_section): Handle compressed
        debug sections.
        * reloc.cc: Include compressed_output.h.
        (Sized_relobj::write_sections): Handle compressed debug sections.

Attachment: gold-compress-debug-patch.txt
Description: Text document