mem: Enable CommMonitor to output traces in atomic mode

The CommMonitor by default only allows memory traces to be gathered in
timing mode. This patch allows memory traces to be gathered in atomic
mode if all one needs is a functional trace of memory addresses used
and timing information is of a secondary concern.

1 files changed, 15 insertions, 2 deletions

diff --git a/src/mem/comm_monitor.cc b/src/mem/comm_monitor.cc
index dc4fa4bd4..a0f8688f2 100644
--- a/src/mem/comm_monitor.cc
+++ b/src/mem/comm_monitor.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2013 ARM Limited
+ * Copyright (c) 2012-2013, 2015 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -176,10 +176,23 @@ CommMonitor::recvFunctionalSnoop(PacketPtr pkt)
 Tick
 CommMonitor::recvAtomic(PacketPtr pkt)
 {
-    // allow stack distance calculations for atomic if enabled
+    // do stack distance calculations if enabled
     if (stackDistCalc)
         stackDistCalc->update(pkt->cmd, pkt->getAddr());
 
+   // if tracing enabled, store the packet information
+   // to the trace stream
+   if (traceStream != NULL) {
+        ProtoMessage::Packet pkt_msg;
+        pkt_msg.set_tick(curTick());
+        pkt_msg.set_cmd(pkt->cmdToIndex());
+        pkt_msg.set_flags(pkt->req->getFlags());
+        pkt_msg.set_addr(pkt->getAddr());
+        pkt_msg.set_size(pkt->getSize());
+
+        traceStream->write(pkt_msg);
+    }
+
     return masterPort.sendAtomic(pkt);
 }