From a1e82259759ce7290269aeca6742098f1adbf2fd Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Mon, 8 Nov 2010 13:58:25 -0600
Subject: ARM: Add checkpointing support

---
 src/arch/arm/table_walker.cc | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

(limited to 'src/arch/arm/table_walker.cc')

diff --git a/src/arch/arm/table_walker.cc b/src/arch/arm/table_walker.cc
index ddf9fe5d3..c7c00924d 100644
--- a/src/arch/arm/table_walker.cc
+++ b/src/arch/arm/table_walker.cc
@@ -59,10 +59,20 @@ TableWalker::~TableWalker()
 }
 
 
-unsigned int
-drain(Event *de)
+unsigned int TableWalker::drain(Event *de)
 {
-    panic("Not implemented\n");
+    if (stateQueueL1.size() != 0 || stateQueueL2.size() != 0)
+    {
+        changeState(Draining);
+        DPRINTF(Checkpoint, "TableWalker busy, wait to drain\n");
+        return 1;
+    }
+    else
+    {
+        changeState(Drained);
+        DPRINTF(Checkpoint, "TableWalker free, no need to drain\n");
+        return 0;
+    }
 }
 
 Port*
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