[AArch64][3/6] GAS support TLSLD move/add relocation types

[Jiong Wang]

All these relocation types are for arithmetic instructions,
add/movk/movz, they share the same gas internal logic, so put them
together.

2015-08-19  Jiong Wang  <jiong.wang@arm.com>

bfd/
   * reloc.c: New entries, including
   BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12,
   BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0,
   BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC,
   BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1,
   BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC,
   BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2.
   * elfnn-aarch64.c (elfNN_aarch64_howto_table): Likewise.
   * bfd-in2.h: Regenerate.
   * libbfd.h: Regenerate.


gas/
   * config/tc-aarch64.c (reloc_table): New relocation modifiers,
   "dtprel_hi12", "dtprel_g0", "dtprel_g0_nc", "dtprel_g1",
   "dtprel_g1_nc", "dtprel_g2".
   (md_apply_fix): Support new relocation types.
   (aarch64_force_relocation): Likewise.
   (process_movw_reloc_info): Likewise.

gas/testsuite/
   * gas/aarch64/reloc-dtprel_g0.s: New testcase.
   * gas/aarch64/reloc-dtprel_g0-ilp32.s: Likewise.
   * gas/aarch64/reloc-dtprel_g0_nc.s: Likewise.
   * gas/aarch64/reloc-dtprel_g0_nc-ilp32.s: Likewise.
   * gas/aarch64/reloc-dtprel_g1.s: Likewise.
   * gas/aarch64/reloc-dtprel_g1-ilp32.s: Likewise.
   * gas/aarch64/reloc-dtprel_g1_nc.s: Likewise.
   * gas/aarch64/reloc-dtprel_g2.s: Likewise.
   * gas/aarch64/reloc-dtprel_hi12.s: Likewise.
   * gas/aarch64/reloc-dtprel_hi12-ilp32.s: Likewise.
   * gas/aarch64/reloc-dtprel_g0.d: New expectation file.
   * gas/aarch64/reloc-dtprel_g0-ilp32.d: Likewise.
   * gas/aarch64/reloc-dtprel_g0_nc.d: Likewise.
   * gas/aarch64/reloc-dtprel_g0_nc-ilp32.d: Likewise.
   * gas/aarch64/reloc-dtprel_g1.d: Likewise.
   * gas/aarch64/reloc-dtprel_g1-ilp32.d: Likewise.	
   * gas/aarch64/reloc-dtprel_g1_nc.d: Likewise.
   * gas/aarch64/reloc-dtprel_g2.d: Likewise.
   * gas/aarch64/reloc-dtprel_hi12.d: Likewise.
   * gas/aarch64/reloc-dtprel_hi12-ilp32.d: Likewise.

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