import invisispec-1.0 source by Mengjia Yan

The original code is at https://github.com/mjyan0720/InvisiSpec-1.0
This code is rebased on upstream gem5 commit 866b200c, which features:
- rdtscp support
- some C++ code optimizations
- newer Linux kernel version number in SE mode

1 files changed, 21 insertions, 0 deletions

diff --git a/src/cpu/o3/lsq.hh b/src/cpu/o3/lsq.hh
index 0c93121e3..e5c35a3a6 100644
--- a/src/cpu/o3/lsq.hh
+++ b/src/cpu/o3/lsq.hh
@@ -134,6 +134,23 @@ class LSQ {
     /** Same as above, but only for one thread. */
     void writebackStores(ThreadID tid);
 
+
+    /** [mengjia]
+     * Attempts to validate loads until all cache ports are used or the
+     * interface becomes blocked.
+     */
+    int exposeLoads();
+    /** Same as above, but only for one thread. */
+    int exposeLoads(ThreadID tid);
+
+    /** [mengjia]
+     * attempt to update FenceDelay state for load insts
+     */
+    void updateVisibleState();
+    /** Same as above, but only for one thread. */
+    void updateVisibleState(ThreadID tid);
+
+
     /**
      * Squash instructions from a thread until the specified sequence number.
      */
@@ -255,6 +272,10 @@ class LSQ {
     int numStoresToWB(ThreadID tid)
     { return thread[tid].numStoresToWB(); }
 
+    /** Returns the number of stores a specific thread has to write back. */
+    int numLoadsToVLD(ThreadID tid)
+    { return thread[tid].numLoadsToVLD(); }
+
     /** Returns if the LSQ will write back to memory this cycle. */
     bool willWB();
     /** Returns if the LSQ of a specific thread will write back to memory this