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15102925731

2012-Apr-09 07:50 UTC

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

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.
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15102925731

2012-Apr-09 08:53 UTC

head link

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

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.


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Joey Gouly

2012-Apr-09 09:16 UTC

head link

[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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Alexander Potapenko

2012-Apr-09 09:19 UTC

head link

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

You'll need to declare the function in a separate module, not in the
function pass.
That module needs to be compiled independently and linked to the
program instrumented by your pass.
In order to add a function declaration to the program, use getOrInsertFunction()
You may want to have a look at how AddressSanitizer works
(http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp),
it does essentially the same.

HTH,
Alex

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