2010-01-13 Chao-ying Fu <fu@mips.com>

2010-01-13  Chao-ying Fu  <fu@mips.com>

	* elfxx-mips.c (JR_TO_B_P): New define to transform JR to B.
	It is true for all CPUs.
	(jal_reloc_p): New function.
	(mips_elf_calculate_relocation): Rename require_jalxp to
	cross_mode_jump_p.
	Update comment for CROSS_MODE_JUMP_P.
	Set up cross_mode_jump_p based on the mode change.
	(mips_elf_perform_relocation): Rename require_jalx to cross_mode_jump_p.
	Update comment for CROSS_MODE_JUMP_P.
	Test cross_mode_jump_p and jal_reloc_p to turn jal to jalx.
	Use !cross_mode_jump_p to guard conversion.
	Convert "jr t9" to "b", if possible.
	(_bfd_mips_elf_relocate_section): Rename require_jalx to
	cross_mode_jump_p.
	Pass &cross_mode_jump_p to call mips_elf_calculate_relocation.
	Pass cross_mode_jump_p to call mips_elf_perform_relocation.