inst_dep_record.proto revision 11253:daf9f91b11e9 
1// Copyright (c) 2013 ARM Limited
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3//
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35//
36// Authors: Radhika Jagtap
37
38// Put all the generated messages in a namespace
39package ProtoMessage;
40
41// Packet header for the o3cpu data dependency trace. The header fields are the
42// identifier describing what object captured the trace, the version of this
43// file format, the tick frequency of the object and the window size used to
44// limit the register dependencies during capture.
45message InstDepRecordHeader {
46  required string obj_id = 1;
47  optional uint32 ver = 2 [default = 0];
48  required uint64 tick_freq = 3;
49  required uint32 window_size = 4;
50}
51
52// Packet to encapsulate an instruction in the o3cpu data dependency trace.
53// The required fields include the instruction sequence number and the type
54// of the record associated with the instruction e.g. load. The request related
55// fields are optional, namely address, size and flags. The dependency related
56// information includes a repeated field for order dependencies and register
57// dependencies for loads, stores and comp records. There is a field for the
58// computational delay with respect to the dependency that completed last. A
59// weight field is used to account for committed instruction that were
60// filtered out before writing the trace and is used to estimate ROB
61// occupancy during replay. An optional field is provided for the instruction
62// PC.
63message InstDepRecord {
64  enum RecordType {
65    INVALID = 0;
66    LOAD = 1;
67    STORE = 2;
68    COMP = 3;
69  }
70  required uint64 seq_num = 1;
71  required RecordType type = 2 [default = INVALID];
72  optional uint64 p_addr = 3;
73  optional uint32 size = 4;
74  optional uint32 flags = 5;
75  repeated uint64 rob_dep = 6;
76  required uint64 comp_delay = 7;
77  repeated uint64 reg_dep = 8;
78  optional uint32 weight = 9;
79  optional uint64 pc = 10;
80  optional uint64 v_addr = 11;
81  optional uint32 asid = 12;
82}