opcode * rx.h (enum RX_Size): Add RX_Bad_Size entry. opcodes * rx-decode.opc (bwl): Use RX_Bad_Size. (sbwl): Likewise. (ubwl): Likewise. Rename to ubw. (uBWL): Rename to uBW. Replace all references to uBWL with uBW. * rx-decode.c: Regenerate. * rx-dis.c (size_names): Add entry for RX_Bad_Size. (opsize_names): Likewise. (print_insn_rx): Detect and report RX_Bad_Size.