* config/m68k/linux.h (FUNCTION_VALUE_REGNO_P): Use macros for
	register numbers more.
	* config/m68k/m68k.h (STACK_POINTER_REGNUM,
	FRAME_POINTER_REGNUM, STATIC_CHAIN_REGNUM,
	M68K_STRUCT_VALUE_REGNUM, FUNCTION_VALUE, LIBCALL_VALUE,
	FUNCTION_VALUE_REGNO_P): Likewise.
	* config/m68k/m68kelf.h (M68K_STRUCT_VALUE_REGNUM,
	STATIC_CHAIN_REGNUM): Likewise.
	* config/m68k/m68kemb.h (FUNCTION_VALUE_REGNO_P): Likewise.
	* config/m68k/netbsd-elf.h (M68K_STRUCT_VALUE_REGNUM,
	STATIC_CHAIN_REGNUM, FUNCTION_VALUE_REGNO_P): Likewise.
	* config/m68k/m68k.md (FP_REG): New.

From-SVN: r123850