【作者】 徐怀亮；

【导师】 朱巧明；

【作者基本信息】 苏州大学 ， 计算机应用技术， 2009， 硕士

【摘要】 在PC机和普适计算盛行的今天,嵌入式系统的应用已经成为计算机工业最热门的领域之一,16位/32位高端MCU由于具有功能强大、处理速度快、能耗低等优点,逐渐成为研究与开发的热点。在嵌入式应用的软件开发中,传统交叉开发方式制约了系统开发的效率,硬件对软件的牵制严重影响软件的调试和测试,延误开发进度,致使软件质量难以保整。软件仿真是摆脱困境的一种有效途径,利用仿真技术模拟硬件系统的运行,使软件开发和系统测试在虚拟平台上进行,避免软硬件开发的相互等待,提高开发效率,降低风险成本。本文通过研究16位/32位MCU软件仿真的相关技术,设计并实现了一种具有良好扩展性和通用性的MCU软件仿真器。本文实现的仿真器采用面向对象的设计思想,参照MVC模式,把仿真器的结构分为两层:用户接口层和指令仿真层。接口部分采用构件技术实现,使得仿真器具有良好的扩展性,指令仿真层采用虚指令技术,使得仿真器具有良好的通用性。首先,本文通过对MCU硬件体系结构的分析,提出了在构造MCU软件仿真器时引入构件技术,设计了基于构件的MCU软件仿真器模型,并实现各个子构件的设计,通过动态集成方式将分离的构件组合起来,构成一个完整的MCU软件仿真器,实现动态配置仿真器的功能,使其具有良好的扩展性。其次,为实现对不同体系MCU指令集的仿真,本文提出采用虚指令技术来设计指令的仿真,研究了虚指令的设计与翻译,设计了虚指令函数并对翻译的虚指令进行优化,实现了体系无关的通用型指令仿真的设计。再次,为便于用户进行软件开发,本文设计实现了基于构件的仿真调试平台,提供多种调试方式和部分时序分析的功能。最后,本文对MCU软件仿真器进行测试,结果表明仿真器模型和虚指令的设计都能较好的满足仿真器的要求。更多还原

【Abstract】 With the prevalence of PC and ubiquitous computing,embedded system application becomes one of the hottest areas of computer industry.Species of 16/32-bit MCU is becoming the key and hot spot,for the advantage of powerful,fast and low energy consumption.In the software development of embedded application,the traditional development mode reduces the efficiency of development.Hamper from hardware to software has serious impact on software debugging and testing,delays the development progress,and makes the quality of software hard to guarantee.Simulation development is an effective way to break the mass.With simulation technology simulating the running of hardware system,software development and system testing can be implemented on a virtual platform,which avoids mutual wait between hardware development and software development,improves the development efficiency and lowers the costs and risk.Through the analysis of 16/32-bit MCU simulation technology,a general MCU simulator with good expansibility is designed and implemented.Using the idea of object-oriented and referring to the MVC patten,the MCU simulator is divided into two tiers:user interface and instruction simulation.The interface is implemented by component technology,which makes the simulator eazily expanded.The instruction simulation utilizes virtual instruction technology,which makes the simulator a general one.Firstly,through the analysis of MCU,component technology is utilized to build MCU simulator.The MCU software simulator model based on component is designed and MCU’s sub-components are implemented.Dynamic integration is utilized to form a complete MCU simulator with isolated components,which makes MCU software simulator can be dynamic configured and eazily expanded.Secondly,to simulate different instructions,virtual instruction technology is utilized to design of instruction simulation, and the construction,translation and optimization is studied.The instruction function is designed and the translated virtual instruction is opotimized.At last,a generic and hierarchy-independent instruction simulator is implemented.Thirdly,to facilitate the software development,simulation debugging is implemented and several debug modes are provided and the timing analyse.Finally the test of MCU software simulator is done,the result shows that the MCU software simulator model and the design of virtual instruction both can satisfy the requirement of MCU software simulator.更多还原