[Bug binutils/23919] bfd doesn't handle ELF compressed data alignment

cvs-commit at gcc dot gnu.org sourceware-bugzilla@sourceware.org
Tue Nov 27 12:03:00 GMT 2018


https://sourceware.org/bugzilla/show_bug.cgi?id=23919

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nick Clifton <nickc@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4207142d6a5d2359170c5f9a140fc1a2351fbda9

commit 4207142d6a5d2359170c5f9a140fc1a2351fbda9
Author: Mark Wielaard <mark@klomp.org>
Date:   Tue Nov 27 11:59:10 2018 +0000

    Handle ELF compressed header alignment correctly by setting up the section
alignment correctly for the Elf32_Chdr or Elf64_Chdr type and respect the
ch_addralign field when decompressing the section data.

        PR binutils/23919
    binutils* readelf.c (dump_sections_as_strings): Remove bogus addralign
check.
        (dump_sections_as_bytes): Likewise.
        (load_specific_debug_sections): Likewise.
        * testsuite/binutils-all/dw2-3.rS: Adjust alignment.
        * testsuite/binutils-all/dw2-3.rt: Likewise.

    bfd * bfd.c (bfd_update_compression_header): Explicitly set alignment.
        (bfd_check_compression_header): Add uncompressed_alignment_power
        argument. Check ch_addralign is a power of 2.
        * bfd-in2.h: Regenerated.
        * compress.c (bfd_compress_section_contents): Get and set
        orig_uncompressed_alignment_pow if section is decompressed.
        (bfd_is_section_compressed_with_header): Add and get
        uncompressed_align_pow_p argument.
        (bfd_is_section_compressed): Add uncompressed_align_power argument
        to bfd_is_section_compressed_with_header call.
        (bfd_init_section_decompress_status): Get and set
        uncompressed_alignment_power.
        * elf.c (_bfd_elf_make_section_from_shdr): Add
        uncompressed_align_power argument to
        bfd_is_section_compressed_with_header call.

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