1 files changed, 107 insertions, 0 deletions
diff --git a/src/mem/packet.cc b/src/mem/packet.cc
new file mode 100644
index 000000000..56dd2bdfa
--- /dev/null
+++ b/src/mem/packet.cc
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+/*
+ * 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
+ *          Steve Reinhardt
+ */
+
+/**
+ * @file
+ * Definition of the Packet Class, a packet is a transaction occuring
+ * between a single level of the memory heirarchy (ie L1->L2).
+ */
+#include "base/misc.hh"
+#include "mem/packet.hh"
+
+static const std::string ReadReqString("ReadReq");
+static const std::string WriteReqString("WriteReq");
+static const std::string WriteReqNoAckString("WriteReqNoAck");
+static const std::string ReadRespString("ReadResp");
+static const std::string WriteRespString("WriteResp");
+static const std::string OtherCmdString("<other>");
+
+const std::string &
+Packet::cmdString() const
+{
+    switch (cmd) {
+      case ReadReq:         return ReadReqString;
+      case WriteReq:        return WriteReqString;
+      case WriteReqNoAck:   return WriteReqNoAckString;
+      case ReadResp:        return ReadRespString;
+      case WriteResp:       return WriteRespString;
+      default:              return OtherCmdString;
+    }
+}
+
+/** delete the data pointed to in the data pointer. Ok to call to matter how
+ * data was allocted. */
+void
+Packet::deleteData()
+{
+    assert(staticData || dynamicData);
+    if (staticData)
+        return;
+
+    if (arrayData)
+        delete [] data;
+    else
+        delete data;
+}
+
+/** If there isn't data in the packet, allocate some. */
+void
+Packet::allocate()
+{
+    if (data)
+        return;
+    assert(!staticData);
+    dynamicData = true;
+    arrayData = true;
+    data = new uint8_t[getSize()];
+}
+
+/** Do the packet modify the same addresses. */
+bool
+Packet::intersect(Packet *p)
+{
+    Addr s1 = getAddr();
+    Addr e1 = getAddr() + getSize();
+    Addr s2 = p->getAddr();
+    Addr e2 = p->getAddr() + p->getSize();
+
+    if (s1 >= s2 && s1 < e2)
+        return true;
+    if (e1 >= s2 && e1 < e2)
+        return true;
+    return false;
+}
+
+bool
+fixPacket(Packet *func, Packet *timing)
+{
+    panic("Need to implement!");
+}