def memory(ea, op):
        '''Operand type decoder for memory-type operands which return an address.'''
        if op.type in {idaapi.o_mem, idaapi.o_far, idaapi.o_near, idaapi.o_displ}:
            seg, sel = (op.specval & 0xffff0000) >> 16, (op.specval & 0x0000ffff) >> 0
            return op.addr
        optype = map(utils.funbox("{:s}({:d})".format), [('idaapi.o_far', idaapi.o_far), ('idaapi.o_near', idaapi.o_near)])
        raise E.InvalidTypeOrValueError(u"{:s}.address({:#x}, {!r}) : Expected operand type `{:s}` or `{:s}` but operand type {:d} was received.".format('.'.join((__name__, 'operand_types')), ea, op, optype[0], optype[1], op.type)) 

def get_opcodes(addr, strict):
    """Get current bytes of the instruction pointed at addr.

    Args:
      addr: address of the current instruction
      strict: be more restrictive when applying wildcards (True) or not (False)

    Returns:
      String: hex-encoded representation of the bytes obtained at addr
    """

    if strict:
      offsets_types = {idaapi.o_far, idaapi.o_mem, idaapi.o_imm}
    else:
      offsets_types = {idaapi.o_far, idaapi.o_mem}

    pattern = ''
    mnem = idautils.DecodeInstruction(addr)

    if mnem is not None:
      op1_type = mnem.Op1.type
      op2_type = mnem.Op2.type

      logging.debug(
          '[VTGREP] Instruction: %s  [%d, %d, %d]',
          idc.generate_disasm_line(addr, 0),
          mnem.itype,
          op1_type,
          op2_type
          )

      inst_len = idc.get_item_size(addr)
      drefs = [x for x in idautils.DataRefsFrom(addr)]

      # Checks if any operand constains a memory address
      if (drefs and
          ((op1_type == idaapi.o_imm) or (op2_type == idaapi.o_imm)) or
          op1_type in offsets_types or op2_type in offsets_types):
        pattern = Disassembler.wildcard_instruction(addr)
      # Checks if the instruction is a CALL (near or far) or
      # if it's a JMP (excluding near jumps)
      else:
        if ((mnem.itype == idaapi.NN_call) or
            (mnem.itype == idaapi.NN_jmp and op1_type != idaapi.o_near)):
          pattern = Disassembler.wildcard_instruction(addr)
        # In any other case, concatenate the raw bytes to the current string
        else:
          pattern = binascii.hexlify(idc.get_bytes(addr, inst_len))
          pattern = pattern.decode('utf-8')
      return pattern
    else: return 0