1#!/usr/bin/env python
2
3# Copyright (c) 2013-2014 ARM Limited
4# All rights reserved
5#
6# The license below extends only to copyright in the software and shall
7# not be construed as granting a license to any other intellectual
8# property including but not limited to intellectual property relating

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43# be done manually using:
44# protoc --python_out=. --proto_path=src/proto src/proto/packet.proto
45#
46# The ASCII trace format uses one line per request on the format cmd,
47# addr, size, tick,flags. For example:
48# r,128,64,4000,0
49# w,232123,64,500000,0
50
51import protolib
52import sys
53
54# Import the packet proto definitions. If they are not found, attempt
55# to generate them automatically. This assumes that the script is
56# executed from the gem5 root.
57try:
58 import packet_pb2

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76 exit(-1)
77
78def main():
79 if len(sys.argv) != 3:
80 print "Usage: ", sys.argv[0], " <protobuf input> <ASCII output>"
81 exit(-1)
82
83 try:
84 proto_in = open(sys.argv[1], 'rb')
85 except IOError:
86 print "Failed to open ", sys.argv[1], " for reading"
87 exit(-1)
88
89 try:
90 ascii_out = open(sys.argv[2], 'w')
91 except IOError:
92 print "Failed to open ", sys.argv[2], " for writing"
93 exit(-1)
94
95 # Read the magic number in 4-byte Little Endian
96 magic_number = proto_in.read(4)
97
98 if magic_number != "gem5":
99 print "Unrecognized file"
100 exit(-1)
101
102 print "Parsing packet header"
103
104 # Add the packet header
105 header = packet_pb2.PacketHeader()
106 protolib.decodeMessage(proto_in, header)
107

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