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

[Joey Gouly]

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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