JCVM解析优化设计与实现  

JCVM resolving optimization design and implementation

作　　者：常青[1] 靳伟[1] 李春龙[1] 张其善[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《北京航空航天大学学报》2004年第12期1204-1207,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：针对传统的JCVM(JavaCardVirtualMachine)解析过程复杂、指令执行速度慢的问题 ,依照JCVM特殊的卡内、卡外虚拟机相结合的设计思想 ,提出了分离式的解析优化方案 ;分别建立了卡外执行的静态绑定解析过程和卡内执行的动态绑定解析过程 ,并构建了用于传递中间结果的伪指令集 .性能测试结果表明 ,该方法减少了卡内代码量 ,缩短了指令执行时间 ,提高了JCVM的整体性能 .To solve complex resolving and slow running time problems of traditional JCVM (Java card virtual machine), the separate resolving solution was proposed according to the special structure of off-card and on-card JCVM. The static resolving out of card and the dynamic resolving within card were discussed, and the pseudoinstructions were introduced to transmit the middle result. Benchmarks show this special resolution can reduce the quantity of the code, shorten the running time, and improve the whole capability of JCVM.

关 键 词：解析 优化 JAVA卡 JAVA卡虚拟机 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]