Hi all,
I am master student in Edinburgh, UK. 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
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