反编译到VAXC的设计与实现技术——兼论反编译面临的难点

反编译到VAXC的设计与实现技术——兼论反编译面临的难点 THE DESIGN AND IMPLEMENTATION TECHNIQUE OF DECOMPILING VAX ASSEMBLY LANGUAGE TO VAX C Concurrently Discuss some Difficult Problems Which Any Decompiler Would Face 欧阳清华 Ouyang Qinghua 1 first-author 赵其峰 Zhao Qifeng 1 唐正力 Tang Zhengli 1 朱华池 Zhu Huachi 1 软件工程研究所 软件工程研究所 The Software Engineerig Research Institute, Wuhan University The Software Engineerig Research Institute, Wuhan University 八十年代中期以来,国内一些学者和研究单位开展了反编译的研究。我们从八六年以来,对VAX汇编语言程序反编译到C语言程序进行研究。工作虽然是在VAX机器上做的,但结论具有一般性。与编译程序的逐句扫描逐句翻译方法不同,反编译必须采用分块扫描分块翻译的方法。反编译面临的最大难题是:高级语言只有数学逻辑运算功能,而不具备汇编语言具有的表达机器内部物理过程的功能;表达物理过程的汇编语言指令难以反编译为高级语言。 Since the middle of last decade, a few national reseach workers and research institutes have been engaged in the research of deeompiler We have studied decompiling since 1986. Though the job has been done on VAX computer, the conclusion is universal. It is different from the way that a compiler scans and translates once a statements, while the decompiler must scans and translates once a block The most difficult problem that any de compiler would face is that high computer language, only having the function of arithmetic and logical operation, does not have the capability of expressing physical process that happening in computer, while assembly language does. Assembly instructions that express physical process happening in computer is difficult to translate to high language. 反编译 分块扫描 分块翻译 模拟参数栈 decompilerbl ock-scan block-translation simulated stack of argument 1991-03-01 2021-04-01 3