Clean up clock phase drift code a bit.

src/cpu/base.cc:
    Move clock phase drift code to the base CPU so that any CPU model can use it.
src/cpu/base.hh:
    Added two functions to help get the next cycle the CPU should be scheduled.
src/cpu/simple/atomic.cc:
src/cpu/simple/timing.cc:
    Use the function now in BaseCPU.

--HG--
extra : convert_revision : 444494b66ffc85fc473c23f57683c5f9458ad80c

1 files changed, 8 insertions, 10 deletions

diff --git a/src/cpu/simple/timing.cc b/src/cpu/simple/timing.cc
index 4d57bf6d5..abf316095 100644
--- a/src/cpu/simple/timing.cc
+++ b/src/cpu/simple/timing.cc
@@ -532,14 +532,13 @@ TimingSimpleCPU::IcachePort::recvTiming(PacketPtr pkt)
 {
     if (pkt->isResponse()) {
         // delay processing of returned data until next CPU clock edge
-        Tick time = pkt->req->getTime();
-        while (time < curTick)
-            time += lat;
+        Tick mem_time = pkt->req->getTime();
+        Tick next_tick = cpu->nextCycle(mem_time);
 
-        if (time == curTick)
+        if (next_tick == curTick)
             cpu->completeIfetch(pkt);
         else
-            tickEvent.schedule(pkt, time);
+            tickEvent.schedule(pkt, next_tick);
 
         return true;
     }
@@ -610,14 +609,13 @@ TimingSimpleCPU::DcachePort::recvTiming(PacketPtr pkt)
 {
     if (pkt->isResponse()) {
         // delay processing of returned data until next CPU clock edge
-        Tick time = pkt->req->getTime();
-        while (time < curTick)
-            time += lat;
+        Tick mem_time = pkt->req->getTime();
+        Tick next_tick = cpu->nextCycle(mem_time);
 
-        if (time == curTick)
+        if (next_tick == curTick)
             cpu->completeDataAccess(pkt);
         else
-            tickEvent.schedule(pkt, time);
+            tickEvent.schedule(pkt, next_tick);
 
         return true;
     }