系统级动态二进制翻译系统中访存异常的制导技术研究

Research on Guidance Technology of Accessing Memory Exception in System-Level Dynamic Binary Translation System

访存异常的制导技术对可能引发异常处理的访存指令进行统计和分析,使系统级动态二进制翻译系统能够动态地生成优化后的目标代码。制导技术能够减少目标代码中保存上下文信息的操作次数,提高动态二进制翻译系统执行效率。文章对访存异常的制导技术分析并实现,并得到此策略提供的性能提升。

The guidance technology of accessing memory exception computes and analyzes memory access instructions that may lead to exceptional handling. System-level dynamic binary translation systems can dynamic;ally generate optimized object codes. The guidance technology can reduce the number of operations of storing context information in the object codes, and improve the efficiency of the implementation of the dynamic binary translation system. This paper analyzes and implements the technology, and gets the performance improvement the technology can provide.