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+// Copyright (c) 2013 ARM Limited
+// All rights reserved
+//
+// The license below extends only to copyright in the software and shall
+// not be construed as granting a license to any other intellectual
+// property including but not limited to intellectual property relating
+// to a hardware implementation of the functionality of the software
+// licensed hereunder. You may use the software subject to the license
+// terms below provided that you ensure that this notice is replicated
+// unmodified and in its entirety in all distributions of the software,
+// modified or unmodified, in source code or in binary form.
+//
+// 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: Radhika Jagtap
+
+// Put all the generated messages in a namespace
+package ProtoMessage;
+
+// Packet header for the o3cpu data dependency trace. The header fields are the
+// identifier describing what object captured the trace, the version of this
+// file format, the tick frequency of the object and the window size used to
+// limit the register dependencies during capture.
+message InstDepRecordHeader {
+ required string obj_id = 1;
+ optional uint32 ver = 2 [default = 0];
+ required uint64 tick_freq = 3;
+ required uint32 window_size = 4;
+}
+
+// Packet to encapsulate an instruction in the o3cpu data dependency trace.
+// The required fields include the instruction sequence number, whether it
+// is a load, and whether it is a store. The request related fields are
+// optional, namely address, size and flags. These exist only if the
+// instruction is a load or store. The dependency related information includes
+// a repeated field for order dependencies, a repeated field for register
+// dependencies and the computational delay with respect to the dependency
+// that completed last. A weight field is used to account for committed
+// instructions that were filtered out before writing the trace and is used
+// to estimate ROB occupancy during replay. An optional field is provided for
+// the instruction PC.
+message InstDepRecord {
+ required uint64 seq_num = 1;
+ required bool load = 2;
+ required bool store = 3;
+ optional uint64 addr = 4;
+ optional uint32 size = 5;
+ optional uint32 flags = 6;
+ repeated uint64 rob_dep = 7;
+ required uint64 comp_delay = 8;
+ repeated uint64 reg_dep = 9;
+ optional uint32 weight = 10;
+ optional uint64 pc = 11;
+}