[PATCH 5/5] x86: TLS desc call relocs target zero-size fields

[H.J. Lu]

On Thu, Apr 22, 2021 at 1:41 AM Jan Beulich <jbeulich@suse.com> wrote:
>
> These are marker relocations, so together with their bit size being zero
> their byte size should be zero as well. This is expressed by a value of
> 3, not 0.
>
> bfd/
> 2021-04-XX  Jan Beulich  <jbeulich@suse.com>
>
>         * elf32-i386.c (elf_howto_table): R_386_TLS_DESC_CALL has zero
>         size field.
>         * elf64-x86-64.c (x86_64_elf_howto_table): R_X86_64_TLSDESC_CALL
>         has zero size field.
>
> --- a/bfd/elf32-i386.c
> +++ b/bfd/elf32-i386.c
> @@ -130,7 +130,7 @@ static reloc_howto_type elf_howto_table[
>    HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, false, 0, complain_overflow_bitfield,
>         bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
>         true, 0xffffffff, 0xffffffff, false),
> -  HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, false, 0, complain_overflow_dont,
> +  HOWTO(R_386_TLS_DESC_CALL, 0, 3, 0, false, 0, complain_overflow_dont,
>         bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
>         false, 0, 0, false),
>    HOWTO(R_386_TLS_DESC, 0, 2, 32, false, 0, complain_overflow_bitfield,
> --- a/bfd/elf64-x86-64.c
> +++ b/bfd/elf64-x86-64.c
> @@ -146,7 +146,7 @@ static reloc_howto_type x86_64_elf_howto
>         complain_overflow_bitfield, bfd_elf_generic_reloc,
>         "R_X86_64_GOTPC32_TLSDESC",
>         false, 0xffffffff, 0xffffffff, true),
> -  HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, false, 0,
> +  HOWTO(R_X86_64_TLSDESC_CALL, 0, 3, 0, false, 0,
>         complain_overflow_dont, bfd_elf_generic_reloc,
>         "R_X86_64_TLSDESC_CALL",
>         false, 0, 0, false),
>

OK.

Thanks.

-- 
H.J.