PATCH: PR binutils/6412: New binutils is incompatible with old object files

H.J. Lu hjl.tools@gmail.com
Mon Apr 21 22:07:00 GMT 2008


On Fri, Apr 18, 2008 at 3:32 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> Hi,
>
>  This is the patch for readelf to handle old object files. It checks if
>  one of sh_link in section header table >= number of sections. It
>  works on object files generated by GNU assembler and linker
>  since they put the .strtab section at the end of section header
>  table.
>
>  I will use the similar approach in bfd. I think gold should also
>  support old object files.
>

Hi,

Here is the patch for bfd and readelf. OK to install?

Thanks.


H.J.
---
bfd/

2008-04-21  H.J. Lu  <hongjiu.lu@intel.com>

        PR binutils/6412
        * bfd.c (bfd): Add has_gap_in_elf_shndx.
        * bfd-in2.h: Regenerated.

        * bfd-in.h (bfd_has_gap_in_elf_shndx): New.

        * elf.c (setup_group): Handle gap in section indices.
        * elfcode.h (elf_swap_symbol_in): Likewise.
        (elf_object_p): Likewise.  Use %B where reporting corrupt
        string table index.

include/elf/

2008-04-21  H.J. Lu  <hongjiu.lu@intel.com>

        PR binutils/6412
        * internal.h (ELF_SECTION_HEADER_INDEX_GAP): New.

2008-04-21  H.J. Lu  <hongjiu.lu@intel.com>

        PR binutils/6412
        * readelf.c (hole_in_shndx): New.
        (original_shndx_info): Likewise.
        (original_shndx): Likewise.
        (process_file_header): Move ELF magic bytes check to ...
        (get_file_header): Here.
        (get_32bit_section_headers): Set hole_in_shndx if sh_link
        >= number of sections.
        (get_64bit_section_headers): Likewise.
        (get_32bit_elf_symbols): Adjust st_shndx if hole_in_shndx
        isn't 0.
        (get_64bit_elf_symbols): Likewise.
        (process_section_headers): Adjust elf_header.e_shstrndx,
        sh_link and sh_info, save original sh_link and sh_info,
        display adjustment for sh_link and sh_info if hole_in_shndx
        isn't 0.
        (process_section_groups): Adjust member section index if
        hole_in_shndx isn't 0.
        (process_object): Free original_shndx if needed.
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