pc_count_tracker.cc

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#include "cpu/probes/pc_count_tracker.hh"
 
 
namespace gem5
{
 
PcCountTracker::PcCountTracker(const PcCountTrackerParams &p)
    : ProbeListenerObject(p),
      cpuptr(p.core),
      manager(p.ptmanager)
{
    if (!cpuptr || !manager) {
        fatal("%s is NULL", !cpuptr ? "CPU": "PcCountTrackerManager");
    }
    for (int i = 0; i < p.targets.size(); i++) {
        // initialize the set of targeting Program Counter addresses
        targetPC.insert(p.targets[i].getPC());
    }
}
 
void
PcCountTracker::regProbeListeners()
{
    // connect the probe listener with the probe "RetriedInstsPC" in the
    // corresponding core.
    // when "RetiredInstsPC" notifies the probe listener, then the function
    // 'check_pc' is automatically called
    typedef ProbeListenerArg<PcCountTracker, Addr> PcCountTrackerListener;
    listeners.push_back(new PcCountTrackerListener(this, "RetiredInstsPC",
                                            &PcCountTracker::checkPc));
}
 
void
PcCountTracker::checkPc(const Addr& pc) {
    if (targetPC.find(pc) != targetPC.end()) {
        // if the PC is one of the target PCs, then notify the
        // PcCounterTrackerManager by calling its `check_count` function
        manager->checkCount(pc);
    }
}
 
} // namespace gem5