* arc-tdep.c: #include "gdbcmd.h".

	* arc-tdep.c: #include "gdbcmd.h".
	(codestream_seek): Pass CORE_ADDR.
	(arc_cpu_type, tmp_arc_cpu_type, arc_cpu_type_table): New globals.
	(debug_pipeline_p): Likewise.
	(X_...): Instruction field access macros.
	(BUILD_INSN): Define.
	(codestream_tell): Allow for stream elements > 1 byte.
	(codestream_fill): Likewise.
	(setup_prologue_scan): New function.
	(arc_get_frame_setup): Call it.  Update to current spec
	regarding prologues.  Use BUILD_INSN.
	(skip_prologue): New argument `frameless_p'.  Use BUILD_INSN.
	(arc_frame_saved_pc): New function.
	(frame_find_saved_regs): Use BUILD_INSN.
	(get_insn_type, single_step): New functions.
	(one_stepped): New global.
	(arc_set_cpu_type_command, arc_show_cpu_type_command): New functions.
	(arc_set_cpu_type): New function.
	(_initialize_arc_tdep): Define new `set' commands `cpu',
	`displaypipeline', and `debugpipeline'.
	* remote-arc.c (break_insn): Add bi-endian support.
	(arc_insert_breakpoint): Likewise.
	(arc_remove_breakpoint): Likewise.
	(switch_command): Delete.
	* arc/tm-arc.h (TARGET_BYTE_ORDER): Delete.
	(TARGET_BYTE_ORDER_SELECTABLE): Define.
	(DEFAULT_ARC_CPU_TYPE): Define.
	(SKIP_PROLOGUE_FRAMELESS_P): Define.
	(BREAKPOINT): Delete.
	(BIG_BREAKPOINT, LITTLE_BREAKPOINT): Define.
	(DECR_PC_AFTER_BREAK): Change to 8.
	(NO_SINGLE_STEP): Define.
	(ARC_PC_TO_REAL_ADDRESS): Define.
	(SAVED_PC_AFTER_CALL): Use it.
	(NUM_REGS, REGISTER_BYTES): Fix.
	(FRAME_SAVED_PC): Call arc_frame_saved_pc.
	(FRAME_LOCALS_ADDRESS): Fix.