void CallReplace::instrument(){
uint32_t temp32;
uint64_t temp64;
LineInfoFinder* lineInfoFinder = NULL;
if (hasLineInformation()){
lineInfoFinder = getLineInfoFinder();
}
InstrumentationPoint* p = addInstrumentationPoint(getProgramEntryBlock(), programEntry, InstrumentationMode_tramp, FlagsProtectionMethod_full, InstLocation_prior);
ASSERT(p);
if (!p->getInstBaseAddress()){
PRINT_ERROR("Cannot find an instrumentation point at the exit function");
}
p = addInstrumentationPoint(getProgramExitBlock(), programExit, InstrumentationMode_tramp, FlagsProtectionMethod_full, InstLocation_prior);
ASSERT(p);
if (!p->getInstBaseAddress()){
PRINT_ERROR("Cannot find an instrumentation point at the exit function");
}
uint64_t siteIndex = reserveDataOffset(sizeof(uint32_t));
programEntry->addArgument(siteIndex);
Vector<X86Instruction*> myInstPoints;
Vector<uint32_t> myInstList;
Vector<LineInfo*> myLineInfos;
for (uint32_t i = 0; i < getNumberOfExposedInstructions(); i++){
X86Instruction* instruction = getExposedInstruction(i);
ASSERT(instruction->getContainer()->isFunction());
Function* function = (Function*)instruction->getContainer();
if (instruction->isFunctionCall()){
Symbol* functionSymbol = getElfFile()->lookupFunctionSymbol(instruction->getTargetAddress());
if (functionSymbol){
//PRINT_INFOR("looking for function %s", functionSymbol->getSymbolName());
uint32_t funcIdx = searchFileList(functionList, functionSymbol->getSymbolName());
if (funcIdx < (*functionList).size()){
BasicBlock* bb = function->getBasicBlockAtAddress(instruction->getBaseAddress());
ASSERT(bb->containsCallToRange(0,-1));
ASSERT(instruction->getSizeInBytes() == Size__uncond_jump);
myInstPoints.append(instruction);
myInstList.append(funcIdx);
LineInfo* li = NULL;
if (lineInfoFinder){
li = lineInfoFinder->lookupLineInfo(bb);
}
myLineInfos.append(li);
}
}
}
}
ASSERT(myInstPoints.size() == myInstList.size());
ASSERT(myLineInfos.size() == myInstList.size());
uint64_t fileNames = reserveDataOffset(sizeof(char*) * myInstList.size());
uint64_t lineNumbers = reserveDataOffset(sizeof(uint32_t) * myInstList.size());
for (uint32_t i = 0; i < myInstList.size(); i++){
uint32_t line = 0;
char* fname = NOSTRING;
if (myLineInfos[i]){
line = myLineInfos[i]->GET(lr_line);
fname = myLineInfos[i]->getFileName();
}
uint64_t filenameaddr = getInstDataAddress() + reserveDataOffset(strlen(fname) + 1);
initializeReservedData(getInstDataAddress() + fileNames + i*sizeof(char*), sizeof(char*), &filenameaddr);
initializeReservedData(filenameaddr, strlen(fname), fname);
initializeReservedData(getInstDataAddress() + lineNumbers + i*sizeof(uint32_t), sizeof(uint32_t), &line);
}
programEntry->addArgument(fileNames);
programEntry->addArgument(lineNumbers);
for (uint32_t i = 0; i < myInstPoints.size(); i++){
PRINT_INFOR("(site %d) %#llx: replacing call %s -> %s in function %s", i, myInstPoints[i]->getBaseAddress(), getFunctionName(myInstList[i]), getWrapperName(myInstList[i]), myInstPoints[i]->getContainer()->getName());
InstrumentationPoint* pt = addInstrumentationPoint(myInstPoints[i], functionWrappers[myInstList[i]], InstrumentationMode_tramp, FlagsProtectionMethod_none, InstLocation_replace);
if (getElfFile()->is64Bit()){
pt->addPrecursorInstruction(X86InstructionFactory64::emitMoveRegToMem(X86_REG_CX, getInstDataAddress() + getRegStorageOffset()));
pt->addPrecursorInstruction(X86InstructionFactory64::emitMoveImmToReg(i, X86_REG_CX));
pt->addPrecursorInstruction(X86InstructionFactory64::emitMoveRegToMem(X86_REG_CX, getInstDataAddress() + siteIndex));
pt->addPrecursorInstruction(X86InstructionFactory64::emitMoveMemToReg(getInstDataAddress() + getRegStorageOffset(), X86_REG_CX, true));
} else {
pt->addPrecursorInstruction(X86InstructionFactory32::emitMoveRegToMem(X86_REG_CX, getInstDataAddress() + getRegStorageOffset()));
pt->addPrecursorInstruction(X86InstructionFactory32::emitMoveImmToReg(i, X86_REG_CX));
pt->addPrecursorInstruction(X86InstructionFactory32::emitMoveRegToMem(X86_REG_CX, getInstDataAddress() + siteIndex));
pt->addPrecursorInstruction(X86InstructionFactory32::emitMoveMemToReg(getInstDataAddress() + getRegStorageOffset(), X86_REG_CX));
}
}
}
