想了一下，这课最好的上法还是顺便学一下soot这个框架，感觉和LLVM有类似也有不同，由于生成的是jvm栈机以及可以调用jni这种ffi related stuff。是故边学边玩。
[Program Analysis] Control Flow Graph
[Program Analysis] Intermediate Representation
我又来学软工了😄，倒腾java的种种，今天就在乱搞soot，跑一个命令行真脑瘫。不过zhe次不像暑研要写在Phosphor上的ASM visitor，只需处理三地址码的jimple就好。
java -cp "/Users/yiweiyang/.m2/repository/org/soot-oss/soot/4.2.1/soot-4.2.1.jar:/Users/yiweiyang/.m2/repository/org/slf4j/slf4j-api/1.7.5/slf4j-api-1.7.5.jar:/Users/yiweiyang/.m2/repository/org/slf4j/slf4j-log4j12/1.7.5/slf4j-log4j12-1.7.5.jar:/Users/yiweiyang/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar:/Users/yiweiyang/.m2/repository/de/upb/cs/swt/axml/2.0.0/axml-2.0.0.jar:/Users/yiweiyang/.m2/repository/com/google/guava/guava/19.0/guava-19.0.jar:/Users/yiweiyang/.m2/repository/org/ow2/asm/asm/9.2/asm-9.2.jar:/Users/yiweiyang/.m2/repository/org/ow2/asm/asm-commons/9.2/asm-commons-9.2.jar:/Users/yiweiyang/.m2/repository/org/ow2/asm/asm-tree/9.2/asm-tree-9.2.jar:/Users/yiweiyang/.m2/repository/de/upb/cs/swt/heros/1.2.2/heros-1.2.2.jar:/Users/yiweiyang/.m2/repository/org/ow2/asm/asm-util/9.2/asm-util-9.2.jar" soot.Main --soot-class-path /Users/yiweiyang/project/test_soot/target/classes:/Users/yiweiyang/.sdkman/candidates/java/current/jre/lib/rt.jar Bear
Continue reading "[Program Analysis] Intermediate Representation"
[Program Analysis] Intro
The course from NJU mainly focus on the classical technique to solve the current program analysis proble. The course from PKU is discussing different genre like symbolic execution/ formal methods/ JQF.
[Program Analysis] CFL recheability
A path is considered to connect two nodes A and B, or B is reachable from A. Only if the concatenation of the labels on the edges of the path is a word in a specified context-free language.