From 652281a61c6be7210b575e50566e7efdc82ab6ba Mon Sep 17 00:00:00 2001
From: Kevin Lim <ktlim@umich.edu>
Date: Mon, 6 Nov 2006 13:27:45 -0500
Subject: 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
---
 src/cpu/base.cc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/cpu/base.cc')

diff --git a/src/cpu/base.cc b/src/cpu/base.cc
index ea4b03bf2..55ceea8fb 100644
--- a/src/cpu/base.cc
+++ b/src/cpu/base.cc
@@ -259,6 +259,26 @@ BaseCPU::regStats()
 #endif
 }
 
+Tick
+BaseCPU::nextCycle()
+{
+    Tick next_tick = curTick + clock - 1;
+    next_tick -= (next_tick % clock);
+    return next_tick;
+}
+
+Tick
+BaseCPU::nextCycle(Tick begin_tick)
+{
+    Tick next_tick = begin_tick;
+
+    while (next_tick < curTick)
+        next_tick += clock;
+
+    next_tick -= (next_tick % clock);
+    assert(next_tick >= curTick);
+    return next_tick;
+}
 
 void
 BaseCPU::registerThreadContexts()
-- 
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