From c0cf76c837d03c0b2cdaf0876b6c42a408ed1509 Mon Sep 17 00:00:00 2001
From: Ali Saidi <saidi@eecs.umich.edu>
Date: Mon, 29 May 2006 18:24:27 -0400
Subject: Create a new CpuEvent class that has a pointer to an execution
 context in the object and places itself on a global list so so the events can
 be migrated on cpu switches. Create a new wrapper classe called
 CpuEventWrapper that works like the old wrapper class but calls the function
 with the xc parameter Use new CpuEventWrapper class from tick compare events
 on sparc

src/arch/sparc/regfile.hh:
    Use new CpuEventWrapper class from tick compare events
src/arch/sparc/ua2005.cc:
    Move definition to to a fullsystem only file, since it is.
src/cpu/base.cc:
    On switch from one cpu to another CpuEvent::replaceExecContext() needs to be called on all (oldxc,newxc) pairs.

--HG--
extra : convert_revision : eecf4540427cc0ddf75e19a3371cf32b56cba0f5
---
 src/cpu/cpuevent.cc | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/cpu/cpuevent.cc

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

diff --git a/src/cpu/cpuevent.cc b/src/cpu/cpuevent.cc
new file mode 100644
index 000000000..ae1dd7fa3
--- /dev/null
+++ b/src/cpu/cpuevent.cc
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Ali Saidi
+ */
+
+#include "cpu/cpuevent.hh"
+
+/** Static list of all CpuEvent objects so we can modify their execution
+ * contexts as needed. */
+CpuEvent::CpuEventList CpuEvent::cpuEventList;
+
+CpuEvent::~CpuEvent()
+{
+    CpuEventList::iterator i;
+
+    // delete the event from the global list
+    for (i = cpuEventList.begin(); i != cpuEventList.end(); ) {
+        if (*i == this)
+            i = cpuEventList.erase(i);
+        else
+            i++;
+    }
+}
+
+void
+CpuEvent::replaceExecContext(ExecContext *oldXc, ExecContext *newXc)
+{
+    CpuEventList::iterator i;
+
+    // Update any events that have the old execution context with the new exec
+    // context
+    for (i = cpuEventList.begin(); i != cpuEventList.end(); i++) {
+        if ((*i)->xc == oldXc)
+            (*i)->xc = newXc;
+    }
+}
-- 
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