search for: simplifyxorinst

...I am doing my MSc project with LLVM compiler and I have to modify LLVM to implement the StackGuard with a XOR random Canary. However, I am not familiar with LLVM. My problem is that I want to XOR the random canary word with the return address which are both 32 bits. I found a method called SimplifyXorInst(Value *, Value *, const TargetData *,const DominatorTree *, unsigned) but I do not know whether it is right method and how to use it. Could you give me some advice or sample code about it? Thank you Best wishes, Ying -- The University of Edinburgh is a charitable body, registered in Scotla...

.... I am doing my MSc project with LLVM compiler and I have to modify LLVM to implement the StackGuard with a XOR random Canary. However, I am not familiar with LLVM. My problem is that I want to XOR the random canary word with the return address which are both 32 bits. I found a method called SimplifyXorInst(Value *, Value *, const TargetData *,const DominatorTree *, unsigned) but I do not know whether it is right method and how to use it. Could you give me some advice or sample code about it? Thank you Best wishes, Ying -- The University of Edinburgh is a charitable body, registered in Scotlan...