* config/rs6000/rs6000.h (DBX_REGISTER_NUMBER): Pass format argument
	to rs6000_dbx_register_number.
	(DWARF_FRAME_REGNUM): Redefine as identity map.
	(DWARF2_FRAME_REG_OUT): Call rs6000_dbx_register_number.
	* config/rs6000/rs6000-protos.h (rs6000_dbx_register_number): Update.
	* config/rs6000/rs6000.c (rs6000_dbx_register_number): Add format
	argument to handle .debug_frame and .eh_frame directly.  Always
	translate SPE high register numbers.  Add special treatment for CR,
	but only in .debug_frame.  Respect RS6000_USE_DWARF_NUMBERING.

	* config/rs6000/sysv.h (DBX_REGISTER_NUMBER): Do not undefine.
	* config/rs6000/freebsd.h (DBX_REGISTER_NUMBER): Remove.
	(RS6000_USE_DWARF_NUMBERING): Define.
	* config/rs6000/freebsd64.h (DBX_REGISTER_NUMBER): Remove.
	(RS6000_USE_DWARF_NUMBERING): Define.
	* config/rs6000/netbsd.h (DBX_REGISTER_NUMBER): Remove.
	(RS6000_USE_DWARF_NUMBERING): Define.
	* config/rs6000/lynx.h (DBX_REGISTER_NUMBER): Remove.
	(RS6000_USE_DWARF_NUMBERING): Define.
	* config/rs6000/aix.h (RS6000_USE_DWARF_NUMBERING): Define.
	* config/rs6000/darwin.h (RS6000_USE_DWARF_NUMBERING): Define.

From-SVN: r216157