1// Copyright (c) 2013,2017 ARM Limited
2// All rights reserved
3//
4// The license below extends only to copyright in the software and shall
5// not be construed as granting a license to any other intellectual
6// property including but not limited to intellectual property relating
7// to a hardware implementation of the functionality of the software
8// licensed hereunder.  You may use the software subject to the license
9// terms below provided that you ensure that this notice is replicated
10// unmodified and in its entirety in all distributions of the software,
11// modified or unmodified, in source code or in binary form.
12//
13// Redistribution and use in source and binary forms, with or without
14// modification, are permitted provided that the following conditions are
15// met: redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer;
17// redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution;
20// neither the name of the copyright holders nor the names of its
21// contributors may be used to endorse or promote products derived from
22// this software without specific prior written permission.
23//
24// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35//
36// Authors: Radhika Jagtap
37
38syntax = "proto2";
39
40// Put all the generated messages in a namespace
41package ProtoMessage;
42
43// Packet header for the o3cpu data dependency trace. The header fields are the
44// identifier describing what object captured the trace, the version of this
45// file format, the tick frequency of the object and the window size used to
46// limit the register dependencies during capture.
47message InstDepRecordHeader {
48  required string obj_id = 1;
49  optional uint32 ver = 2 [default = 0];
50  required uint64 tick_freq = 3;
51  required uint32 window_size = 4;
52}
53
54// Packet to encapsulate an instruction in the o3cpu data dependency trace.
55// The required fields include the instruction sequence number and the type
56// of the record associated with the instruction e.g. load. The request related
57// fields are optional, namely address, size and flags. The dependency related
58// information includes a repeated field for order dependencies and register
59// dependencies for loads, stores and comp records. There is a field for the
60// computational delay with respect to the dependency that completed last. A
61// weight field is used to account for committed instruction that were
62// filtered out before writing the trace and is used to estimate ROB
63// occupancy during replay. An optional field is provided for the instruction
64// PC.
65message InstDepRecord {
66  enum RecordType {
67    INVALID = 0;
68    LOAD = 1;
69    STORE = 2;
70    COMP = 3;
71  }
72  required uint64 seq_num = 1;
73  required RecordType type = 2 [default = INVALID];
74  optional uint64 p_addr = 3;
75  optional uint32 size = 4;
76  optional uint32 flags = 5;
77  repeated uint64 rob_dep = 6;
78  required uint64 comp_delay = 7;
79  repeated uint64 reg_dep = 8;
80  optional uint32 weight = 9;
81  optional uint64 pc = 10;
82  optional uint64 v_addr = 11;
83  optional uint32 asid = 12;
84}