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//===-- PIC16FrameOverlay.cpp - Implementation for PIC16 Frame Overlay===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the PIC16 Frame Overlay implementation.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Pass.h"
#include "llvm/Module.h"
#include "llvm/Support/raw_ostream.h"
#include "PIC16.h"
#include "PIC16FrameOverlay.h"
#include <vector>
#include <iostream>
using namespace llvm;
using std::vector;
using std::string;
void PIC16FrameOverlay::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<CallGraph>();
}
bool PIC16FrameOverlay::runOnModule(Module &M) {
CallGraph &CG = getAnalysis<CallGraph>();
for (CallGraph::iterator it = CG.begin() ; it != CG.end(); it++)
{
// External calling node doesn't have any function associated
// with it
if (!it->first)
continue;
if (it->second->size() == 0) {
if (PAN::isInterruptLineFunction(it->first))
ColorFunction(it->second, PIC16Overlay::GREEN_IL);
else
ColorFunction(it->second, PIC16Overlay::GREEN);
}
}
return false;
}
void PIC16FrameOverlay::ColorFunction(CallGraphNode *CGN, unsigned Color) {
switch (Color) {
case PIC16Overlay::GREEN:
case PIC16Overlay::GREEN_IL: {
Function *LeafFunct = CGN->getFunction();
std::string Section = "";
if (LeafFunct->hasSection()) {
Section = LeafFunct->getSection();
Section.append(" ");
}
Section.append(PAN::getOverlayStr(Color));
LeafFunct->setSection(Section);
break;
}
default:
assert( 0 && "Color not supported");
}
}
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