Support for draining, and the new method of switching out. Now switching out happens after the pipeline has been drained, deferring the three way handshake to the normal drain mechanism. The calls of switchOut() and takeOverFrom() both take action immediately.

src/cpu/o3/commit.hh:
src/cpu/o3/commit_impl.hh:
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
src/cpu/o3/decode.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/iew.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/rename.hh:
src/cpu/o3/rename_impl.hh:
    Support for draining, new method of switching out.

--HG--
extra : convert_revision : 05bf8b271ec85b3e2c675c3bed6c42aeba21f465

1 files changed, 6 insertions, 3 deletions

diff --git a/src/cpu/o3/rename.hh b/src/cpu/o3/rename.hh
index 581fc8f81..538dd9bb4 100644
--- a/src/cpu/o3/rename.hh
+++ b/src/cpu/o3/rename.hh
@@ -157,12 +157,15 @@ class DefaultRename
     /** Sets pointer to the scoreboard. */
     void setScoreboard(Scoreboard *_scoreboard);
 
+    /** Drains the rename stage. */
+    void drain();
+
+    /** Resumes execution after a drain. */
+    void resume() { }
+
     /** Switches out the rename stage. */
     void switchOut();
 
-    /** Completes the switch out. */
-    void doSwitchOut();
-
     /** Takes over from another CPU's thread. */
     void takeOverFrom();