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

[15102925731]

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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