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-rw-r--r--src/cpu/o3/cpu.cc77
1 files changed, 52 insertions, 25 deletions
diff --git a/src/cpu/o3/cpu.cc b/src/cpu/o3/cpu.cc
index fb7739db8..5bda57cf8 100644
--- a/src/cpu/o3/cpu.cc
+++ b/src/cpu/o3/cpu.cc
@@ -158,7 +158,7 @@ FullO3CPU<Impl>::FullO3CPU(Params *params)
physmem(system->physmem),
#endif // FULL_SYSTEM
mem(params->mem),
- switchCount(0),
+ drainCount(0),
deferRegistration(params->deferRegistration),
numThreads(number_of_threads)
{
@@ -713,45 +713,72 @@ FullO3CPU<Impl>::haltContext(int tid)
}
template <class Impl>
-void
-FullO3CPU<Impl>::switchOut()
+bool
+FullO3CPU<Impl>::drain(Event *drain_event)
{
- switchCount = 0;
- fetch.switchOut();
- decode.switchOut();
- rename.switchOut();
- iew.switchOut();
- commit.switchOut();
+ drainCount = 0;
+ drainEvent = drain_event;
+ fetch.drain();
+ decode.drain();
+ rename.drain();
+ iew.drain();
+ commit.drain();
// Wake the CPU and record activity so everything can drain out if
// the CPU is currently idle.
wakeCPU();
activityRec.activity();
+
+ return false;
}
template <class Impl>
void
-FullO3CPU<Impl>::signalSwitched()
-{
- if (++switchCount == NumStages) {
- fetch.doSwitchOut();
- rename.doSwitchOut();
- commit.doSwitchOut();
- instList.clear();
- while (!removeList.empty()) {
- removeList.pop();
- }
+FullO3CPU<Impl>::resume()
+{
+ if (_status == SwitchedOut)
+ return;
+ fetch.resume();
+ decode.resume();
+ rename.resume();
+ iew.resume();
+ commit.resume();
-#if USE_CHECKER
- if (checker)
- checker->switchOut();
-#endif
+ if (!tickEvent.scheduled())
+ tickEvent.schedule(curTick);
+ _status = Running;
+}
+template <class Impl>
+void
+FullO3CPU<Impl>::signalDrained()
+{
+ if (++drainCount == NumStages) {
if (tickEvent.scheduled())
tickEvent.squash();
- _status = SwitchedOut;
+ _status = Drained;
+ drainEvent->process();
}
- assert(switchCount <= 5);
+ assert(drainCount <= 5);
+}
+
+template <class Impl>
+void
+FullO3CPU<Impl>::switchOut()
+{
+ fetch.switchOut();
+ rename.switchOut();
+ commit.switchOut();
+ instList.clear();
+ while (!removeList.empty()) {
+ removeList.pop();
+ }
+
+ _status = SwitchedOut;
+#if USE_CHECKER
+ if (checker)
+ checker->switchOut();
+#endif
}
template <class Impl>