* elf64-ppc.c (STD_R0_0R1, STD_R0_0R12, LD_R0_0R1, LD_R0_0R12,

	* elf64-ppc.c (STD_R0_0R1, STD_R0_0R12, LD_R0_0R1, LD_R0_0R12,
	LI_R12_0, STVX_VR0_R12_R0, LVX_VR0_R12_R0, MTLR_R0, SFPR_MAX): Define.
	(struct sfpr_def_parms): New.
	(sfpr_define): New function.
	(savegpr0, savegpr0_tail, restgpr0, restgpr0_tail): New functions.
	(savegpr1, savegpr1_tail, restgpr1, restgpr1_tail): New functions.
	(savefpr, savefpr0_tail, restfpr, restfpr0_tail): New functions.
	(savefpr1_tail, restfpr1_tail): New functions.
	(savevr, savevr_tail, restvr, restvr_tail): New functions.
	(MIN_SAVE_FPR, MAX_SAVE_FPR): Don't define.
	(ppc64_elf_func_desc_adjust): Use sfpr_define in place of existing
	code.  Define all ABI mandated _save and _rest functions.