[LLVMdev] indirect calls tracking and control flow graph

[Petsas Athanasios]

Thank you very much for the information!
I will try it out!

Thanasis


On Mon, Apr 28, 2014 at 7:59 PM, Amara Emerson <amara.emerson at gmail.com>wrote:

> Hi Thanasis,
>
> You should be able to do this easily by writing a FunctionPass (see
> http://llvm.org/docs/WritingAnLLVMPass.html for more info) and
> iterating over the instructions in the function, searching for
> CallInst instructions and using getCalledFunction() to check if it's
> indirect.
>
> Amara
>
> On 28 April 2014 14:10, Petsas Athanasios <petsas at ics.forth.gr> wrote:
> > Dear all,
> >
> > I would like to keep track of all the indirect calls that may caused from
> > function
> > pointers inside a program. I need this in order to be able to construct
> the
> > control
> > flow graph of all the indirect calls, that is which function is legal to
> > call another
> > function.
> >
> > Is there a module that implements this functionality in llvm? If not, is
> > there a way to
> > do it? Maybe through implementing a pass. I am new to llvm. Could you
> > suggest me
> > a way to start doing this? Perhaps the llvm intermediate code can help
> me on
> > this.
> > Do you know where this code is being produced? or what files or passes
> do I
> > have
> > to modify for this?
> >
> > Until now I have used this command to produce and study the llvm bitcode
> for
> > a test
> > program:
> > clang -S -emit-llvm fpointers.c -c -o fpointers.bc.text
> >
> > Thank you,
> >
> > --
> > Thanasis Petsas
> > Distributed Computing Systems (DCS)
> > Institute of Computer Science (ICS/FORTH)
> > Heraklion, Crete
> > Greece (GR)
> >
> > http://www.thanasispetsas.com/
> >
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> >
>



-- 
Thanasis Petsas
Distributed Computing Systems (DCS)
Institute of Computer Science (ICS/FORTH)
Heraklion, Crete
Greece (GR)

http://www.thanasispetsas.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140428/ba7c8d77/attachment.html>