[LLVMdev] indirect calls tracking and control flow graph

[Petsas Athanasios]

On Tue, May 6, 2014 at 12:49 PM, Petsas Athanasios <petsas at ics.forth.gr>wrote:

> Ok, I will switch to release_32. Thank you very much for your help!
>
> Regards,
> Thanasis Petsas
>
>
> On Mon, May 5, 2014 at 9:34 PM, John Criswell <criswell at illinois.edu>wrote:
>
>>  Dear Petsas,
>>
>> I personally haven't used Poolalloc/DSA with anything after LLVM 3.2 or
>> later.  Others have applied patches to get it to work with newer versions
>> of LLVM.
>>
>> That said, after speaking with Will, it looks like poolalloc trunk was
>> patched to work with LLVM trunk.  Therefore, my best recommendation is to
>> either:
>>
>> 1) Switch to LLVM trunk and try it with poolalloc trunk.  It may or may
>> not work, depending on how much LLVM trunk has changed.
>>
>
Ok, I tested the first option and works fine!




>
>> 2) Switch to using the release_32 branch of both LLVM and Poolalloc.
>> Unless you need newer LLVM features, I'd go this route as LLVM 3.2 isn't
>> changing anymore. :)
>>
>> -- John T.
>>
>>
>>
>> On 5/4/14 5:52 AM, Petsas Athanasios wrote:
>>
>>  Thank you,
>>
>>  I tried to compile it with llvm 3.4 through these commands:
>>
>>
>> petsas at shinigami:~/software/poolalloc$ ./configure
>> --with-llvmsrc=/home/petsas/software/llvm
>> --with-llvmobj=/home/petsas/software/llvm
>>
>> petsas at shinigami:~/software/poolalloc$ make
>>
>> but I'm getting get this error:
>>
>> make[1]: Entering directory `/home/petsas/software/poolalloc/lib'
>> make[2]: Entering directory `/home/petsas/software/poolalloc/lib/DSA'
>> llvm[2]: Compiling CallTargets.cpp for Debug+Asserts build (PIC)
>> CallTargets.cpp:35:3: error: use of undeclared identifier 'DEBUG_TYPE'
>>   STATISTIC (DirCall, "Number of direct calls");
>>   ^
>> /home/petsas/software/llvm/include/llvm/ADT/Statistic.h:165:38: note:
>> expanded from macro 'STATISTIC'
>>   static llvm::Statistic VARNAME = { DEBUG_TYPE, DESC, 0, 0 }
>>                                      ^
>> CallTargets.cpp:36:3: error: use of undeclared identifier 'DEBUG_TYPE'
>>   STATISTIC (IndCall, "Number of indirect calls");
>>   ^
>> ...
>>
>>  Any ideas?
>>
>>
>> On Fri, May 2, 2014 at 5:53 PM, John Criswell <criswell at illinois.edu>wrote:
>>
>>>  On 5/2/14, 9:49 AM, Petsas Athanasios wrote:
>>>
>>>
>>>
>>>
>>> On Mon, Apr 28, 2014 at 10:30 PM, John Criswell <criswell at illinois.edu>wrote:
>>>
>>>>  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.
>>>>
>>>
>>>  Do you know where I can find mainline poolalloc so as I can compile it
>>> with
>>>  LLVM 3.4 ?
>>>
>>>
>>>  svn co http://llvm.org/svn/llvm-project/poolalloc/trunk poolalloc
>>>
>>> Regards,
>>>
>>> John Criswell
>>>
>>>
>>>
>>>
>>>
>>>>
>>>> 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/
>>>>
>>>>
>>>>   _______________________________________________
>>>> LLVM Developers mailing listLLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.eduhttp://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/
>>>
>>>
>>>
>>
>>
>> --
>> Thanasis Petsas
>> Distributed Computing Systems (DCS)
>> Institute of Computer Science (ICS/FORTH)
>> Heraklion, Crete
>> Greece (GR)
>>
>> http://www.thanasispetsas.com/
>>
>>
>>
>
>
> --
> Thanasis Petsas
> Distributed Computing Systems (DCS)
> Institute of Computer Science (ICS/FORTH)
> Heraklion, Crete
> Greece (GR)
>
> http://www.thanasispetsas.com/
>



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

http://www.thanasispetsas.com/
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