InterFlow CFAnalysis::interFlow(Flow& flow) {
// 1) for each call use AST information to find its corresponding called function
// 2) create a set of <call,entry,exit,callreturn> edges
cout<<"STATUS: establishing inter-flow ..."<<endl;
InterFlow interFlow;
LabelSet callLabs=functionCallLabels(flow);
int callLabsNum=callLabs.size();
cout << "INFO: number of function call labels: "<<callLabsNum<<endl;
int callLabNr=0;
for(LabelSet::iterator i=callLabs.begin();i!=callLabs.end();++i) {
//cout<<"INFO: resolving function call "<<callLabNr<<" of "<<callLabsNum<<endl;
SgNode* callNode=getNode(*i);
//cout<<"INFO: creating inter-flow for "<<callNode->unparseToString();
//info: callNode->get_args()
SgFunctionCallExp *funCall=SgNodeHelper::Pattern::matchFunctionCall(callNode);
if(!funCall)
throw SPRAY::Exception("interFlow: unknown call exp (not a SgFunctionCallExp)");
SgFunctionDefinition* funDef=SgNodeHelper::determineFunctionDefinition(funCall);
Label callLabel,entryLabel,exitLabel,callReturnLabel;
if(funDef==0) {
//cout<<" [no definition found]"<<endl;
// we were not able to find the funDef in the AST
//cout << "STATUS: External function ";
//if(SgFunctionDeclaration* funDecl=funCall->getAssociatedFunctionDeclaration())
// cout << SgNodeHelper::getFunctionName(funDecl)<<"."<<endl;
//else
// cout << "cannot be determined."<<endl;
callLabel=*i;
entryLabel=Labeler::NO_LABEL;
exitLabel=Labeler::NO_LABEL;
callReturnLabel=labeler->functionCallReturnLabel(callNode);
//cout <<"No function definition found for call: "<<funCall->unparseToString()<<endl;
} else {
//cout<<" [definition found]"<<endl;
callLabel=*i;
entryLabel=labeler->functionEntryLabel(funDef);
exitLabel=labeler->functionExitLabel(funDef);
callReturnLabel=labeler->functionCallReturnLabel(callNode);
}
interFlow.insert(InterEdge(callLabel,entryLabel,exitLabel,callReturnLabel));
callLabNr++;
}
cout<<"STATUS: inter-flow established."<<endl;
return interFlow;
}
InterFlow CFAnalyzer::interFlow(Flow& flow) {
// 1) for each call use AST information to find its corresponding called function
// 2) create a set of <call,entry,exit,callreturn> edges
InterFlow interFlow;
LabelSet callLabs=functionCallLabels(flow);
//cout << "calllabs: "<<callLabs.size()<<endl;
for(LabelSet::iterator i=callLabs.begin();i!=callLabs.end();++i) {
SgNode* callNode=getNode(*i);
//info: callNode->get_args()
SgFunctionCallExp *funCall=SgNodeHelper::Pattern::matchFunctionCall(callNode);
if(!funCall)
throw "Error: interFlow: unkown call exp (not a SgFunctionCallExp).";
SgFunctionDefinition* funDef=SgNodeHelper::determineFunctionDefinition(funCall);
Label callLabel,entryLabel,exitLabel,callReturnLabel;
if(funDef==0) {
// we were not able to find the funDef in the AST
cout << "STATUS: External function ";
if(SgFunctionDeclaration* funDecl=funCall->getAssociatedFunctionDeclaration())
cout << SgNodeHelper::getFunctionName(funDecl)<<"."<<endl;
else
cout << "cannot be determined."<<endl;
callLabel=*i;
entryLabel=Labeler::NO_LABEL;
exitLabel=Labeler::NO_LABEL;
callReturnLabel=labeler->functionCallReturnLabel(callNode);
} else {
callLabel=*i;
entryLabel=labeler->functionEntryLabel(funDef);
exitLabel=labeler->functionExitLabel(funDef);
callReturnLabel=labeler->functionCallReturnLabel(callNode);
}
interFlow.insert(InterEdge(callLabel,entryLabel,exitLabel,callReturnLabel));
}
return interFlow;
}