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Joey Gouly

2012-Apr-09 09:16 UTC

[LLVMdev] How to instrument a this function using insertBefore instruction???

Hi,

I don't think the code you pasted can be the correct code, where does FibF
come from?

Anyway, the problem is that you're calling the FibF from Module A, however
you defined it for Module B.

You need to insert the FibF function into the Module that you're running.
To do this override "virtual bool doInitialization(Module &M);"
and insert
FibF into M.

Joey

2012/4/9 15102925731 <zhenkaixd at 126.com>
> Hi,
> I got upset.. What does “Broken module found, compilation aborted!” mean
> really?? what‘s “broken module“??
>
>
>
> --
>              祝好！
>
>   甄凯
>
>
------------------------------------------------------------------------------------------------------
> 2012-04-09
>
>
------------------------------------------------------------------------------------------------------
> Name: 甄凯(ZhenKai)
> Homepage:http://www.renren.com/262729393
> Email: zhenkaixd at 126.com or 846227103 at qq.com
> TEL: 15810729006(Beijing)
> Address: Room I-406, Central Building, Tsinghua University, Beijing,
> China. 100084.
>
> 在 2012-04-09 15:50:00，15102925731 <zhenkaixd at 126.com> 写道：
>
> Hi all，
> Im trying to instrument this hello function right before the instruction
> that call the "puts" function(the source code is as follow).
>
> Now I can compile the pass without errors, but when run the pass with opt
> tool, it broke down. The diagnose is something like
>
> Referencing function in another module!
>   %CallCheck = call i32 @fib()
> Broken module found, compilation aborted!
>
> Does it mean I fail to wrap the function into a module?? How to actually
> insert the the "hello function" before the calling instruction ??
Im
> waiting for your help.
> Thank you!!
>
>
>
//******=========================================================================================================================================******//
>
//******=========================================================================================================================================******////
> FPSFI: a Function Pass Based Idea for Software Fault Isolation
> //
> //
> //This file involves the main work of SFI. It will source the certain
> point in any programme(mainly modules in our context)and insert our manully
> made//
> //check function to provide API integrity. Thanks to the pass mechanism
> that LLVM provide, we can wrap our fix and optimization idea into a
> function pass
> // and  act it on every function the clang has analysed.
> //
>
>
//******=========================================================================================================================================******//
>
>
//******=========================================================================================================================================******//
> #include "llvm/Pass.h"
> #include "llvm/Function.h"
> #include "llvm/Support/raw_ostream.h"
> #include "llvm/Instruction.h"
> #include "llvm/Transforms/Utils/UnrollLoop.h"
> #include "llvm/BasicBlock.h"
> #include "llvm/ADT/Statistic.h"
> #include "llvm/Analysis/LoopIterator.h"
> #include "llvm/Analysis/LoopPass.h"
> #include "llvm/Analysis/ScalarEvolution.h"
> #include "llvm/Analysis/ScalarEvolutionExpander.h"
> #include "llvm/Support/Debug.h"
> #include "llvm/Transforms/Utils/BasicBlockUtils.h"
> #include "llvm/Transforms/Utils/Cloning.h"
> #include "llvm/Type.h"
> #include "llvm/LLVMContext.h"
> #include "llvm/Support/Casting.h"
> #include "stdio.h"
>
> #include "llvm/Module.h"
> using namespace llvm;
>
>
> int check()
> {
>     printf("Hello me!!\n");
>     return 0;
> }
>
>
>
>  Module * M;
>  LLVMContext Context;
>   FunctionType *STy=FunctionType::get(Type::getInt32Ty(Context), false);
>   Function *check = Function::Create(STy, Function::InternalLinkage,
> "check" ,&M);
>
>   CallInst *callcheck = CallInst::Create(FibF,"CallCheck");
>
> namespace {
>
> struct Hello : public FunctionPass
>     {
>
>                       static char ID;
>                       Hello() : FunctionPass(ID) {}
>                       virtual bool runOnFunction(Function &F)
>                       {
>                               errs() << "Hello: ";
>                                   errs().write_escaped(F.getName())
> <<'\n';
> // run through all the instruction and convert all the callinst to ...
>                             for (Function::iterator BI = F.begin(), BE >
F.end(); BI != BE; ++BI)
>                              {
>                                 for(BasicBlock::iterator II >
BI->begin(),IE = BI->end();II != IE; ++II)
>                                  {
> //                                     errs() <<"between
instructions! \n";
> //                                     CallInst * III >
CallInst::Create(&F,"InsttoCallInst",II);
>                                         if(CallInst * III >
dyn_cast<CallInst>(II))
>                                          {
>
>
>
if(III->getCalledFunction()!=NULL&&III->getCalledFunction()->getName()=="puts")
>                                              {
>                                                      errs()
> <<III->getCalledFunction()->getName()<<" function
found!\n";
>
> callcheck->insertBefore(II);
>                                                       errs()
<<"INSERT
> SUCCEEDED!!!!!!!!\n";
>                                               }
>                                               else
>                                              {
>                                                   errs()
<<"it's not main
> function!\n"<<"it
is:"<<III->getCalledFunction()->getName()<<'\n';
>                                               }
>                                         }/**/
>                                 }
>
>                             }
>
>                                 }
>                               return true;
>                         }
>        };
>  }
>
> char Hello::ID = 0;
> static RegisterPass<Hello> X("hello", "ZHello Korld
Pass", false, false);
>
> --
>              祝好！
>
>   甄凯
>
>
------------------------------------------------------------------------------------------------------
> 2012-04-09
>
>
------------------------------------------------------------------------------------------------------
> Name: 甄凯(ZhenKai)
> Homepage:http://www.renren.com/262729393
> Email: zhenkaixd at 126.com or 846227103 at qq.com
> TEL: 15810729006(Beijing)
> Address: Room I-406, Central Building, Tsinghua University, Beijing,
> China. 100084.
>
>
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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15102925731

2012-Apr-09 09:44 UTC

head link

[LLVMdev] How to instrument a this function using insertBefore instruction???

Thank you very much!

To make it simpler, I may as well just implement the self-written "check
function" in C language instead of wrapping it in LLVM module. According to
the hint you give me, all I need to do is as follow(?)

1. Implement the "Check function" in the check.c file;
2. Add the check function into the module(the Hello1.bc file which I will run
the functionPass on) in the functionPass file.
3. Determine the exact position and insert the CallInst instruction to call that
check function. (already done as is shown in the source code).
4. gmake and use the opt tool to generate the instrumented module(Hello2.bc).
5. Link the check.c file and Hello2.bc file together to generate ELF file.

does that make sense?




--

            祝好！
 
  甄凯
------------------------------------------------------------------------------------------------------
2012-04-09
------------------------------------------------------------------------------------------------------
Name: 甄凯(ZhenKai)
Homepage:http://www.renren.com/262729393
Email: zhenkaixd at 126.com or 846227103 at qq.com
TEL: 15810729006(Beijing)
Address: Room I-406, Central Building, Tsinghua University, Beijing, China.
100084.

At 2012-04-09 17:16:52,"Joey Gouly" <joel.gouly at gmail.com>
wrote:
Hi,


I don't think the code you pasted can be the correct code, where does FibF
come from?


Anyway, the problem is that you're calling the FibF from Module A, however
you defined it for Module B.


You need to insert the FibF function into the Module that you're running. To
do this override "virtual bool doInitialization(Module &M);" and
insert FibF into M.


Joey


2012/4/9 15102925731 <zhenkaixd at 126.com>

Hi,
I got upset.. What does “Broken module found, compilation aborted!” mean
really?? what‘s “broken module“??




--

            祝好！
 
  甄凯
------------------------------------------------------------------------------------------------------
2012-04-09
------------------------------------------------------------------------------------------------------
Name: 甄凯(ZhenKai)
Homepage:http://www.renren.com/262729393
Email: zhenkaixd at 126.com or 846227103 at qq.com
TEL: 15810729006(Beijing)
Address: Room I-406, Central Building, Tsinghua University, Beijing, China.
100084.


在 2012-04-09 15:50:00，15102925731 <zhenkaixd at 126.com> 写道：


Hi all，
Im trying to instrument this hello function right before the instruction that
call the "puts" function(the source code is as follow).

Now I can compile the pass without errors, but when run the pass with opt tool,
it broke down. The diagnose is something like
 
Referencing function in another module!
  %CallCheck = call i32 @fib()
Broken module found, compilation aborted!

Does it mean I fail to wrap the function into a module?? How to actually insert
the the "hello function" before the calling instruction ?? Im waiting
for your help.
Thank you!!

//******=========================================================================================================================================******//
//******=========================================================================================================================================******////
FPSFI: a Function Pass Based Idea for Software Fault Isolation
//
//
//This file involves the main work of SFI. It will source the certain point in
any programme(mainly modules in our context)and insert our manully made//
//check function to provide API integrity. Thanks to the pass mechanism that
LLVM provide, we can wrap our fix and optimization idea into a function pass
// and  act it on every function the clang has analysed.
//
//******=========================================================================================================================================******//
//******=========================================================================================================================================******//
#include "llvm/Pass.h"
#include "llvm/Function.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Instruction.h"
#include "llvm/Transforms/Utils/UnrollLoop.h"
#include "llvm/BasicBlock.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/LoopIterator.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Analysis/ScalarEvolutionExpander.h"
#include "llvm/Support/Debug.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Cloning.h"
#include "llvm/Type.h"
#include "llvm/LLVMContext.h"
#include "llvm/Support/Casting.h"
#include "stdio.h"

#include "llvm/Module.h"
using namespace llvm;


int check()
{
    printf("Hello me!!\n");
    return 0;
}

 

 Module * M;
 LLVMContext Context;
  FunctionType *STy=FunctionType::get(Type::getInt32Ty(Context), false);
  Function *check = Function::Create(STy, Function::InternalLinkage,
"check" ,&M);

  CallInst *callcheck = CallInst::Create(FibF,"CallCheck");

namespace {

struct Hello : public FunctionPass
    {

                      static char ID;
                      Hello() : FunctionPass(ID) {}
                      virtual bool runOnFunction(Function &F)
                      {
                              errs() << "Hello: ";
                                  errs().write_escaped(F.getName())
<<'\n';
// run through all the instruction and convert all the callinst to ...
                            for (Function::iterator BI = F.begin(), BE =
F.end(); BI != BE; ++BI)
                             {
                                for(BasicBlock::iterator II = BI->begin(),IE
= BI->end();II != IE; ++II)
                                 {
//                                     errs() <<"between
instructions! \n";
//                                     CallInst * III =
CallInst::Create(&F,"InsttoCallInst",II);
                                        if(CallInst * III =
dyn_cast<CallInst>(II))
                                         {

                                            
if(III->getCalledFunction()!=NULL&&III->getCalledFunction()->getName()=="puts")
                                             {
                                                     errs()
<<III->getCalledFunction()->getName()<<" function
found!\n";
                                                callcheck->insertBefore(II);
                                                      errs()
<<"INSERT SUCCEEDED!!!!!!!!\n";
                                              }
                                              else
                                             {
                                                  errs() <<"it's
not main function!\n"<<"it
is:"<<III->getCalledFunction()->getName()<<'\n';
                                              }
                                        }/**/ 
                                }
                               
                            }
        
                                } 
                              return true;
                        }
       };
 }

char Hello::ID = 0;
static RegisterPass<Hello> X("hello", "ZHello Korld
Pass", false, false);


--

            祝好！
 
  甄凯
------------------------------------------------------------------------------------------------------
2012-04-09
------------------------------------------------------------------------------------------------------
Name: 甄凯(ZhenKai)
Homepage:http://www.renren.com/262729393
Email: zhenkaixd at 126.com or 846227103 at qq.com
TEL: 15810729006(Beijing)
Address: Room I-406, Central Building, Tsinghua University, Beijing, China.
100084.






_______________________________________________
LLVM Developers mailing list
LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev



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Joey Gouly

2012-Apr-09 09:56 UTC

head link

[LLVMdev] How to instrument a this function using insertBefore instruction???

That sounds like a good general plan, yes!

Joey

2012/4/9 15102925731 <zhenkaixd at 126.com>
> Thank you very much!
>
> To make it simpler, I may as well just implement the self-written
"check
> function" in C language instead of wrapping it in LLVM module.
*According
> to the hint you give me, all I need to do is as follow(?)*
>
> 1. Implement the "Check function" in the check.c file;
> 2. Add the check function into the module(the Hello1.bc file which I will
> run the functionPass on) in the functionPass file.
> 3. Determine the exact position and insert the CallInst instruction to
> call that check function. (already done as is shown in the source code).
> 4. gmake and use the opt tool to generate the instrumented
> module(Hello2.bc).
> 5. Link the check.c file and Hello2.bc file together to generate ELF file.
>
> *does that make sense?*
>
>
>
>
> --
>              祝好！
>
>   甄凯
>
>
------------------------------------------------------------------------------------------------------
> 2012-04-09
>
>
------------------------------------------------------------------------------------------------------
> Name: 甄凯(ZhenKai)
> Homepage:http://www.renren.com/262729393
> Email: zhenkaixd at 126.com or 846227103 at qq.com
> TEL: 15810729006(Beijing)
> Address: Room I-406, Central Building, Tsinghua University, Beijing,
> China. 100084.
>
> At 2012-04-09 17:16:52,"Joey Gouly" <joel.gouly at
gmail.com> wrote:
>
> Hi,
>
> I don't think the code you pasted can be the correct code, where does
FibF
> come from?
>
> Anyway, the problem is that you're calling the FibF from Module A,
however
> you defined it for Module B.
>
> You need to insert the FibF function into the Module that you're
running.
> To do this override "virtual bool doInitialization(Module
&M);" and insert
> FibF into M.
>
> Joey
>
> 2012/4/9 15102925731 <zhenkaixd at 126.com>
>
>> Hi,
>> I got upset.. What does “Broken module found, compilation aborted!”
mean
>> really?? what‘s “broken module“??
>>
>>
>>
>> --
>>              祝好！
>>
>>   甄凯
>>
>>
------------------------------------------------------------------------------------------------------
>> 2012-04-09
>>
>>
------------------------------------------------------------------------------------------------------
>> Name: 甄凯(ZhenKai)
>> Homepage:http://www.renren.com/262729393
>> Email: zhenkaixd at 126.com or 846227103 at qq.com
>> TEL: 15810729006(Beijing)
>> Address: Room I-406, Central Building, Tsinghua University, Beijing,
>> China. 100084.
>>
>> 在 2012-04-09 15:50:00，15102925731 <zhenkaixd at 126.com> 写道：
>>
>> Hi all，
>> Im trying to instrument this hello function right before the
instruction
>> that call the "puts" function(the source code is as follow).
>>
>> Now I can compile the pass without errors, but when run the pass with
opt
>> tool, it broke down. The diagnose is something like
>>
>> Referencing function in another module!
>>   %CallCheck = call i32 @fib()
>> Broken module found, compilation aborted!
>>
>> Does it mean I fail to wrap the function into a module?? How to
actually
>> insert the the "hello function" before the calling
instruction ?? Im
>> waiting for your help.
>> Thank you!!
>>
>>
>>
//******=========================================================================================================================================******//
>>
//******=========================================================================================================================================******////
>> FPSFI: a Function Pass Based Idea for Software Fault Isolation
>> //
>> //
>> //This file involves the main work of SFI. It will source the certain
>> point in any programme(mainly modules in our context)and insert our
manully
>> made//
>> //check function to provide API integrity. Thanks to the pass mechanism
>> that LLVM provide, we can wrap our fix and optimization idea into a
>> function pass
>> // and  act it on every function the clang has analysed.
>> //
>>
>>
//******=========================================================================================================================================******//
>>
>>
//******=========================================================================================================================================******//
>> #include "llvm/Pass.h"
>> #include "llvm/Function.h"
>> #include "llvm/Support/raw_ostream.h"
>> #include "llvm/Instruction.h"
>> #include "llvm/Transforms/Utils/UnrollLoop.h"
>> #include "llvm/BasicBlock.h"
>> #include "llvm/ADT/Statistic.h"
>> #include "llvm/Analysis/LoopIterator.h"
>> #include "llvm/Analysis/LoopPass.h"
>> #include "llvm/Analysis/ScalarEvolution.h"
>> #include "llvm/Analysis/ScalarEvolutionExpander.h"
>> #include "llvm/Support/Debug.h"
>> #include "llvm/Transforms/Utils/BasicBlockUtils.h"
>> #include "llvm/Transforms/Utils/Cloning.h"
>> #include "llvm/Type.h"
>> #include "llvm/LLVMContext.h"
>> #include "llvm/Support/Casting.h"
>> #include "stdio.h"
>>
>> #include "llvm/Module.h"
>> using namespace llvm;
>>
>>
>> int check()
>> {
>>     printf("Hello me!!\n");
>>     return 0;
>> }
>>
>>
>>
>>  Module * M;
>>  LLVMContext Context;
>>   FunctionType *STy=FunctionType::get(Type::getInt32Ty(Context),
false);
>>   Function *check = Function::Create(STy, Function::InternalLinkage,
>> "check" ,&M);
>>
>>   CallInst *callcheck = CallInst::Create(FibF,"CallCheck");
>>
>> namespace {
>>
>> struct Hello : public FunctionPass
>>     {
>>
>>                       static char ID;
>>                       Hello() : FunctionPass(ID) {}
>>                       virtual bool runOnFunction(Function &F)
>>                       {
>>                               errs() << "Hello: ";
>>                                   errs().write_escaped(F.getName())
>> <<'\n';
>> // run through all the instruction and convert all the callinst to ...
>>                             for (Function::iterator BI = F.begin(), BE
>> F.end(); BI != BE; ++BI)
>>                              {
>>                                 for(BasicBlock::iterator II >>
BI->begin(),IE = BI->end();II != IE; ++II)
>>                                  {
>> //                                     errs() <<"between
instructions!
>> \n";
>> //                                     CallInst * III >>
CallInst::Create(&F,"InsttoCallInst",II);
>>                                         if(CallInst * III >>
dyn_cast<CallInst>(II))
>>                                          {
>>
>>
>>
if(III->getCalledFunction()!=NULL&&III->getCalledFunction()->getName()=="puts")
>>                                              {
>>                                                      errs()
>> <<III->getCalledFunction()->getName()<<"
function found!\n";
>>
>> callcheck->insertBefore(II);
>>                                                       errs()
<<"INSERT
>> SUCCEEDED!!!!!!!!\n";
>>                                               }
>>                                               else
>>                                              {
>>                                                   errs()
<<"it's not main
>> function!\n"<<"it
is:"<<III->getCalledFunction()->getName()<<'\n';
>>                                               }
>>                                         }/**/
>>                                 }
>>
>>                             }
>>
>>                                 }
>>                               return true;
>>                         }
>>        };
>>  }
>>
>> char Hello::ID = 0;
>> static RegisterPass<Hello> X("hello", "ZHello
Korld Pass", false, false);
>>
>> --
>>              祝好！
>>
>>   甄凯
>>
>>
------------------------------------------------------------------------------------------------------
>> 2012-04-09
>>
>>
------------------------------------------------------------------------------------------------------
>> Name: 甄凯(ZhenKai)
>> Homepage:http://www.renren.com/262729393
>> Email: zhenkaixd at 126.com or 846227103 at qq.com
>> TEL: 15810729006(Beijing)
>> Address: Room I-406, Central Building, Tsinghua University, Beijing,
>> China. 100084.
>>
>>
>>
>>
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>
>
>
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