<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Hi all£¬<br>Im trying to instrument this hello function right before the instruction that call the "puts" function(the source code is as follow).<br><br>Now I can compile the pass without errors, but when run the pass with opt tool, it broke down. The diagnose is something like<br> <br>Referencing function in another module!<br> %CallCheck = call i32 @fib()<br>Broken module found, compilation aborted!<br><br>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.<br>Thank you!!<br><br>//******=========================================================================================================================================******//<br>//******=========================================================================================================================================******//// FPSFI: a Function Pass Based Idea for Software Fault Isolation<br>//<br>//<br>//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//<br>//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<br>// and act it on every function the clang has analysed.<br>//<br>//******=========================================================================================================================================******//<br>//******=========================================================================================================================================******//<br>#include "llvm/Pass.h"<br>#include "llvm/Function.h"<br>#include "llvm/Support/raw_ostream.h"<br>#include "llvm/Instruction.h"<br>#include "llvm/Transforms/Utils/UnrollLoop.h"<br>#include "llvm/BasicBlock.h"<br>#include "llvm/ADT/Statistic.h"<br>#include "llvm/Analysis/LoopIterator.h"<br>#include "llvm/Analysis/LoopPass.h"<br>#include "llvm/Analysis/ScalarEvolution.h"<br>#include "llvm/Analysis/ScalarEvolutionExpander.h"<br>#include "llvm/Support/Debug.h"<br>#include "llvm/Transforms/Utils/BasicBlockUtils.h"<br>#include "llvm/Transforms/Utils/Cloning.h"<br>#include "llvm/Type.h"<br>#include "llvm/LLVMContext.h"<br>#include "llvm/Support/Casting.h"<br>#include "stdio.h"<br><br>#include "llvm/Module.h"<br>using namespace llvm;<br><br><br>int check()<br>{<br> printf("Hello me!!\n");<br> return 0;<br>}<br><br> <br><br> Module * M;<br> LLVMContext Context;<br> FunctionType *STy=FunctionType::get(Type::getInt32Ty(Context), false);<br> Function *check = Function::Create(STy, Function::InternalLinkage, "check" ,&M); <br><br> CallInst *callcheck = CallInst::Create(FibF,"CallCheck");<br><br>namespace {<br><br>struct Hello : public FunctionPass<br> {<br><br> static char ID;<br> Hello() : FunctionPass(ID) {}<br> virtual bool runOnFunction(Function &F)<br> {<br> errs() << "Hello: ";<br> errs().write_escaped(F.getName()) <<'\n'; <br>// run through all the instruction and convert all the callinst to ...<br> for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI)<br> {<br> for(BasicBlock::iterator II = BI->begin(),IE = BI->end();II != IE; ++II)<br> {<br>// errs() <<"between instructions! \n";<br>// CallInst * III = CallInst::Create(&F,"InsttoCallInst",II);<br> if(CallInst * III = dyn_cast<CallInst>(II))<br> {<br><br> if(III->getCalledFunction()!=NULL&&III->getCalledFunction()->getName()=="puts")<br> {<br> errs() <<III->getCalledFunction()->getName()<<" function found!\n";<br> callcheck->insertBefore(II);<br> errs() <<"INSERT SUCCEEDED!!!!!!!!\n";<br> }<br> else<br> {<br> errs() <<"it's not main function!\n"<<"it is:"<<III->getCalledFunction()->getName()<<'\n';<br> }<br> }/**/ <br> }<br> <br> }<br> <br> } <br> return true;<br> }<br> };<br> }<br><br>char Hello::ID = 0;<br>static RegisterPass<Hello> X("hello", "ZHello Korld Pass", false, false);<br><br><div>--<br><div>
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<div><font color="#c0c0c0"><font size="3"> <span style="COLOR: #000000"> ×£ºÃ£¡</span></font></font></div><span style="COLOR: #000000">
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<div><font size="3"> Õç¿</font></div>
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<div><font color="#c0c0c0"><font size="3">2012-04-09</font></font></div></span></font></div>
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<div><font color="#c0c0c0"><font size="3">Name: Õç¿(ZhenKai)<br>Homepage:http://www.renren.com/262729393</font></font></div>
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