O3 CPU now handles being used with the sampler.

cpu/o3/2bit_local_pred.cc:
cpu/o3/2bit_local_pred.hh:
cpu/o3/bpred_unit.hh:
cpu/o3/bpred_unit_impl.hh:
cpu/o3/btb.cc:
cpu/o3/btb.hh:
cpu/o3/commit.hh:
cpu/o3/commit_impl.hh:
cpu/o3/cpu.cc:
cpu/o3/cpu.hh:
cpu/o3/decode.hh:
cpu/o3/decode_impl.hh:
cpu/o3/fetch.hh:
cpu/o3/fetch_impl.hh:
cpu/o3/fu_pool.cc:
cpu/o3/fu_pool.hh:
cpu/o3/iew.hh:
cpu/o3/iew_impl.hh:
cpu/o3/inst_queue.hh:
cpu/o3/inst_queue_impl.hh:
cpu/o3/lsq.hh:
cpu/o3/lsq_impl.hh:
cpu/o3/lsq_unit.hh:
cpu/o3/lsq_unit_impl.hh:
cpu/o3/mem_dep_unit.hh:
cpu/o3/mem_dep_unit_impl.hh:
cpu/o3/ras.cc:
cpu/o3/ras.hh:
cpu/o3/rename.hh:
cpu/o3/rename_impl.hh:
cpu/o3/rob.hh:
cpu/o3/rob_impl.hh:
cpu/o3/sat_counter.cc:
cpu/o3/sat_counter.hh:
cpu/o3/thread_state.hh:
    Handle switching out and taking over.  Needs to be able to reset all state.
cpu/o3/alpha_cpu_impl.hh:
    Handle taking over from another XC.

--HG--
extra : convert_revision : b936e826f0f8a18319bfa940ff35097b4192b449

1 files changed, 25 insertions, 0 deletions

diff --git a/cpu/o3/rob_impl.hh b/cpu/o3/rob_impl.hh
index 96d907cda..02a4bfbee 100644
--- a/cpu/o3/rob_impl.hh
+++ b/cpu/o3/rob_impl.hh
@@ -121,6 +121,31 @@ ROB<Impl>::setActiveThreads(list<unsigned> *at_ptr)
     activeThreads = at_ptr;
 }
 
+template <class Impl>
+void
+ROB<Impl>::switchOut()
+{
+    for (int tid = 0; tid < numThreads; tid++) {
+        instList[tid].clear();
+    }
+}
+
+template <class Impl>
+void
+ROB<Impl>::takeOverFrom()
+{
+    for (int tid=0; tid  < numThreads; tid++) {
+        doneSquashing[tid] = true;
+        threadEntries[tid] = 0;
+        squashIt[tid] = instList[tid].end();
+    }
+    numInstsInROB = 0;
+
+    // Initialize the "universal" ROB head & tail point to invalid
+    // pointers
+    head = instList[0].end();
+    tail = instList[0].end();
+}
 
 template <class Impl>
 void