[LLVMdev] indirect calls tracking and control flow graph

[John Criswell]

Dear Petsas,

For analyzing indirect function calls, your best bet is probably to use 
the CallGraph analysis pass that is part of DSA.  DSA is included in the 
poolalloc code; you can get directions on downloading poolalloc from the 
SVA web page: http://sva.cs.illinois.edu/docs/Install.html.

The release_32 branch works with LLVM 3.2.  I think mainline poolalloc 
was recently updated to work with LLVM 3.4.

Regards,

John Criswell


On 4/28/14 8:10 AM, Petsas Athanasios 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/
>
>
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