[AArch64] BFD_RELOC_AARCH64_TLSLE_ADD_LO12 should enable overflow check

[Nicholas Clifton]

Hi Jiong,


> 2015-05-19  Jiong Wang  <jiong.wang@arm.com>
>
> bfd/
>    * elfnn-aarch64.c (elfNN_aarch64_howto_table): Set overflow type to
>    complain_overflow_unsigned for BFD_RELOC_AARCH64_TLSLE_ADD_LO12.
>    * elfxx-aarch64.c (_bfd_aarch64_elf_resolve_relocation): Don't use
>    PGOFF for BFD_RELOC_AARCH64_TLSLE_ADD_LO12, that will mask off all
>    potential high overflowed bits.
>
> ld/testsuite/
>    * ld-aarch64/tprel_add_lo12_overflow.s: New testcase.
>    * ld-aarch64/tprel_add_lo12_overflow.d: Nex expectation file.
>    * ld-aarch64/aarch64-elf.exp: Run new testcase.

Approved - please apply.

Cheers
   Nick