void PandaInstrumentVisitor::visitMemSetInst(MemSetInst &I){
Function *F = mod->getFunction("log_dynval");
if (!F) {
printf("Instrumentation function not found\n");
assert(1==0);
}
int bytes = 0;
Value *length = I.getLength();
if (ConstantInt* CI = dyn_cast<ConstantInt>(length)) {
if (CI->getBitWidth() <= 64) {
bytes = CI->getSExtValue();
}
}
if (bytes > 100) {
//This mostly happens in cpu state reset
printf("Note: dyn log ignoring memset greater than 100 bytes\n");
return;
}
PtrToIntInst *PTII;
CallInst *CI;
std::vector<Value*> argValues;
PTII = static_cast<PtrToIntInst*>(IRB.CreatePtrToInt(
I.getOperand(0), wordType));
argValues.push_back(ConstantInt::get(ptrType,
(uintptr_t)dynval_buffer));
argValues.push_back(ConstantInt::get(intType, ADDRENTRY));
argValues.push_back(ConstantInt::get(intType, STORE));
argValues.push_back(static_cast<Value*>(PTII));
CI = IRB.CreateCall(F, ArrayRef<Value*>(argValues));
CI->insertBefore(static_cast<Instruction*>(&I));
PTII->insertBefore(static_cast<Instruction*>(CI));
}
void PropagateJuliaAddrspaces::visitMemSetInst(MemSetInst &MI) {
unsigned AS = MI.getDestAddressSpace();
if (!isSpecialAS(AS))
return;
Value *Replacement = LiftPointer(MI.getRawDest());
if (!Replacement)
return;
Value *TheFn = Intrinsic::getDeclaration(MI.getModule(), Intrinsic::memset,
{Replacement->getType(), MI.getOperand(1)->getType()});
MI.setCalledFunction(TheFn);
MI.setArgOperand(0, Replacement);
}
