* bfd.c (_bfd_get_gp_value): New function.

	* bfd.c (_bfd_get_gp_value): New function.
	(_bfd_set_gp_value): New function.
	* libbfd-in.h (_bfd_get_gp_value): Declare.
	(_bfd_set_gp_value): Declare.
	* libbfd.h: Rebuild.
	* coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Use
	_bfd_get_gp_value and _bfd_set_gp_value rather than referring
	directly to the fields in the tdata information.
	(alpha_relocate_section): Likewise.
	* coff-mips.c (mips_adjust_reloc_in): Likewise.
	(mips_gprel_reloc): Likewise.
	(mips_relocate_section): Likewise.
	* elf32-mips.c (mips_elf_hi16_reloc): Likewise.
	(mips_elf_lo16_reloc): Likewise.
	(mips_elf_final_gp): Likewise.
	(mips_elf_gprel16_reloc): Likewise.
	(mips_elf_gprel32_reloc): Likewise.
	(mips_elf_relocate_section): Likewise.
	(mips_elf_finish_dynamic_symbol): Likewise.
PR 8449.