//     opcode name,             return type,    arg1 type,      arg2 type,      arg3 type,      ...

// Immediate values
OPCODE(ImmU1,                   T::U1,                                                          )
OPCODE(ImmU8,                   T::U8,                                                          )
OPCODE(ImmU32,                  T::U32,                                                         )
OPCODE(ImmRegRef,               T::RegRef,                                                      )

// ARM Context getters/setters
OPCODE(GetRegister,             T::U32,         T::RegRef                                       )
OPCODE(SetRegister,             T::Void,        T::RegRef,      T::U32                          )
OPCODE(GetNFlag,                T::U1,                                                          )
OPCODE(SetNFlag,                T::Void,        T::U1                                           )
OPCODE(GetZFlag,                T::U1,                                                          )
OPCODE(SetZFlag,                T::Void,        T::U1                                           )
OPCODE(GetCFlag,                T::U1,                                                          )
OPCODE(SetCFlag,                T::Void,        T::U1                                           )
OPCODE(GetVFlag,                T::U1,                                                          )
OPCODE(SetVFlag,                T::Void,        T::U1                                           )
OPCODE(BXWritePC,               T::Void,        T::U32                                          )
OPCODE(CallSupervisor,          T::Void,        T::U32                                          )

// Pseudo-operation, handled specially at final emit
OPCODE(GetCarryFromOp,          T::U1,          T::U32                                          )
OPCODE(GetOverflowFromOp,       T::U1,          T::U32                                          )

// Calculations
OPCODE(LeastSignificantHalf,    T::U16,         T::U32                                          )
OPCODE(LeastSignificantByte,    T::U8,          T::U32                                          )
OPCODE(MostSignificantBit,      T::U1,          T::U32                                          )
OPCODE(IsZero,                  T::U1,          T::U32                                          )
OPCODE(LogicalShiftLeft,        T::U32,         T::U32,         T::U8,          T::U1           )
OPCODE(LogicalShiftRight,       T::U32,         T::U32,         T::U8,          T::U1           )
OPCODE(ArithmeticShiftRight,    T::U32,         T::U32,         T::U8,          T::U1           )
OPCODE(RotateRight,             T::U32,         T::U32,         T::U8,          T::U1           )
OPCODE(AddWithCarry,            T::U32,         T::U32,         T::U32,         T::U1           )
OPCODE(SubWithCarry,            T::U32,         T::U32,         T::U32,         T::U1           )
OPCODE(And,                     T::U32,         T::U32,         T::U32                          )
OPCODE(Eor,                     T::U32,         T::U32,         T::U32                          )
OPCODE(Or,                      T::U32,         T::U32,         T::U32                          )
OPCODE(Not,                     T::U32,         T::U32                                          )
OPCODE(SignExtendHalfToWord,    T::U32,         T::U16                                          )
OPCODE(SignExtendByteToWord,    T::U32,         T::U8                                           )
OPCODE(ZeroExtendHalfToWord,    T::U32,         T::U16                                          )
OPCODE(ZeroExtendByteToWord,    T::U32,         T::U8                                           )
OPCODE(ByteReverseWord,         T::U32,         T::U32                                          )
OPCODE(ByteReverseHalf,         T::U16,         T::U16                                          )

// Memory access
OPCODE(ReadMemory8,             T::U8,          T::U32                                          )
OPCODE(ReadMemory16,            T::U16,         T::U32                                          )
OPCODE(ReadMemory32,            T::U32,         T::U32                                          )
OPCODE(ReadMemory64,            T::U64,         T::U32                                          )
OPCODE(WriteMemory8,            T::Void,        T::U32,         T::U8                           )
OPCODE(WriteMemory16,           T::Void,        T::U32,         T::U16                          )
OPCODE(WriteMemory32,           T::Void,        T::U32,         T::U32                          )
OPCODE(WriteMemory64,           T::Void,        T::U32,         T::U64                          )