ChangeLog:

	* mi/mi-main.c (mi_cmd_data_list_register_names): Use selected
	frame architecture instead of current_gdbarch.
	(mi_cmd_data_list_changed_registers): Likewise.
	(mi_cmd_data_list_register_values): Likewise.  Pass selected
	frame to get_register.
	(get_register): Add FRAME argument, use it as frame to retrieve
	registers from (instead of selected frame).  Use frame architecture
	instead of current_gdbarch.
	(mi_cmd_data_write_register_values): Use current regcache
	architecture instead of current_gdbarch.

testsuite/ChangeLog:

	* gdb.mi/gdb680.exp: Update test for error message.