code: def __taint_store(self, instr):
          
          # Get memory address.
          op2_val = self.__emu.read_operand(instr.operands[2])
  
          # Get taint information.
          op0_size = instr.operands[0].size
          op0_taint = self.get_operand_taint(instr.operands[0])
  
          # Propagate taint.
          self.set_memory_taint(op2_val, op0_size // 8, op0_taint)
docs: Taint STM instruction.