[PATCH] gdb: implement PRSTATUS elf32-sparc handler

[Michal Lach]

CC'ing SPARC maintainers.

Michal Lach <michal.lach@phoenix-rtos.com> writes:
> From: Jakub Klimek <jakub.klimek@phoenix-rtos.com>
>
> Solaris ELF32 coredumps emit a PRSTATUS note which is left unparsed,
> without a handler in GDB, leading to incorrectly viewed coredumps.
>
> Signed-off-by: Michal Lach <michal.lach@phoenix-rtos.com>
> ---
>  bfd/elf32-sparc.c | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
>
> diff --git a/bfd/elf32-sparc.c b/bfd/elf32-sparc.c
> index a5f5d058196..837b2e16fff 100644
> --- a/bfd/elf32-sparc.c
> +++ b/bfd/elf32-sparc.c
> @@ -31,6 +31,34 @@
>
>  /* Support for core dump NOTE sections.  */
>
> +static bool
> +elf32_sparc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
> +{
> +  int offset;
> +  size_t size;
> +
> +  switch (note->descsz)
> +    {
> +    default:
> +      return false;
> +    case 228:
> +      /* pr_cursig */
> +      elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
> +
> +      /* pr_pid */
> +      elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
> +
> +      /* pr_reg */
> +      offset = 72;
> +      size = 152;
> +
> +      break;
> +    }
> +
> +  /* Make a ".reg/999" section.  */
> +  return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, note->descpos + offset);
> +}
> +
>  static bool
>  elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
>  {
> @@ -230,6 +258,7 @@ elf32_sparc_reloc_type_class (const struct bfd_link_info *info,
>  					elf32_sparc_merge_private_bfd_data
>  #define elf_backend_final_write_processing \
>  					elf32_sparc_final_write_processing
> +#define elf_backend_grok_prstatus	elf32_sparc_grok_prstatus
>  #define elf_backend_grok_psinfo		elf32_sparc_grok_psinfo
>  #define elf_backend_reloc_type_class	elf32_sparc_reloc_type_class

--
 - Michal Lach