encode_packet_trace.py (10065:58bf21ca88de) encode_packet_trace.py (10107:524afa92d940)
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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30# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37#
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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30# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37#
38# Copyright 2008 Google Inc. All rights reserved.
39# http://code.google.com/p/protobuf/
40#
41# Redistribution and use in source and binary forms, with or without
42# modification, are permitted provided that the following conditions are
43# met:
44#
45# * Redistributions of source code must retain the above copyright
46# notice, this list of conditions and the following disclaimer.
47# * Redistributions in binary form must reproduce the above
48# copyright notice, this list of conditions and the following disclaimer
49# in the documentation and/or other materials provided with the
50# distribution.
51# * Neither the name of Google Inc. nor the names of its
52# contributors may be used to endorse or promote products derived from
53# this software without specific prior written permission.
54#
55# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
56# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
57# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
58# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
59# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
60# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
61# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
62# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
63# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
64# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
65# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66#
67# Authors: Andreas Hansson
38# Authors: Andreas Hansson
68#
69
70# This script is used to migrate ASCII packet traces to the protobuf
71# format currently used in gem5. It assumes that protoc has been
72# executed and already generated the Python package for the packet
73# messages. This can be done manually using:
74# protoc --python_out=. --proto_path=src/proto src/proto/packet.proto
75#
76# The ASCII trace format uses one line per request on the format cmd,
77# addr, size, tick. For example:
78# r,128,64,4000
79# w,232123,64,500000
80# This trace reads 64 bytes from decimal address 128 at tick 4000,
81# then writes 64 bytes to address 232123 at tick 500000.
82#
83# This script can of course also be used as a template to convert
84# other trace formats into the gem5 protobuf format
85
39
40# This script is used to migrate ASCII packet traces to the protobuf
41# format currently used in gem5. It assumes that protoc has been
42# executed and already generated the Python package for the packet
43# messages. This can 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. For example:
48# r,128,64,4000
49# w,232123,64,500000
50# This trace reads 64 bytes from decimal address 128 at tick 4000,
51# then writes 64 bytes to address 232123 at tick 500000.
52#
53# This script can of course also be used as a template to convert
54# other trace formats into the gem5 protobuf format
55
86import struct
56import protolib
87import sys
88
89# Import the packet proto definitions. If they are not found, attempt
90# to generate them automatically. This assumes that the script is
91# executed from the gem5 root.
92try:
93 import packet_pb2
94except:

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105 print "Please install the Python protobuf module"
106 exit(-1)
107
108 import packet_pb2
109 else:
110 print "Failed to import packet proto definitions"
111 exit(-1)
112
57import sys
58
59# Import the packet proto definitions. If they are not found, attempt
60# to generate them automatically. This assumes that the script is
61# executed from the gem5 root.
62try:
63 import packet_pb2
64except:

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75 print "Please install the Python protobuf module"
76 exit(-1)
77
78 import packet_pb2
79 else:
80 print "Failed to import packet proto definitions"
81 exit(-1)
82
113def EncodeVarint(out_file, value):
114 """
115 The encoding of the Varint32 is copied from
116 google.protobuf.internal.encoder and is only repeated here to
117 avoid depending on the internal functions in the library.
118 """
119 bits = value & 0x7f
120 value >>= 7
121 while value:
122 out_file.write(struct.pack('<B', 0x80|bits))
123 bits = value & 0x7f
124 value >>= 7
125 out_file.write(struct.pack('<B', bits))
126
127def encodeMessage(out_file, message):
128 """
129 Encoded a message with the length prepended as a 32-bit varint.
130 """
131 out = message.SerializeToString()
132 EncodeVarint(out_file, len(out))
133 out_file.write(out)
134
135def main():
136 if len(sys.argv) != 3:
137 print "Usage: ", sys.argv[0], " <ASCII input> <protobuf output>"
138 exit(-1)
139
140 try:
141 ascii_in = open(sys.argv[1], 'r')
142 except IOError:

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153 # is done in src/proto/protoio.cc
154 proto_out.write("gem5")
155
156 # Add the packet header
157 header = packet_pb2.PacketHeader()
158 header.obj_id = "Converted ASCII trace " + sys.argv[1]
159 # Assume the default tick rate
160 header.tick_freq = 1000000000
83def main():
84 if len(sys.argv) != 3:
85 print "Usage: ", sys.argv[0], " <ASCII input> <protobuf output>"
86 exit(-1)
87
88 try:
89 ascii_in = open(sys.argv[1], 'r')
90 except IOError:

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101 # is done in src/proto/protoio.cc
102 proto_out.write("gem5")
103
104 # Add the packet header
105 header = packet_pb2.PacketHeader()
106 header.obj_id = "Converted ASCII trace " + sys.argv[1]
107 # Assume the default tick rate
108 header.tick_freq = 1000000000
161 encodeMessage(proto_out, header)
109 protolib.encodeMessage(proto_out, header)
162
163 # For each line in the ASCII trace, create a packet message and
164 # write it to the encoded output
165 for line in ascii_in:
166 cmd, addr, size, tick = line.split(',')
167 packet = packet_pb2.Packet()
168 packet.tick = long(tick)
169 # ReadReq is 1 and WriteReq is 4 in src/mem/packet.hh Command enum
170 packet.cmd = 1 if cmd == 'r' else 4
171 packet.addr = long(addr)
172 packet.size = int(size)
110
111 # For each line in the ASCII trace, create a packet message and
112 # write it to the encoded output
113 for line in ascii_in:
114 cmd, addr, size, tick = line.split(',')
115 packet = packet_pb2.Packet()
116 packet.tick = long(tick)
117 # ReadReq is 1 and WriteReq is 4 in src/mem/packet.hh Command enum
118 packet.cmd = 1 if cmd == 'r' else 4
119 packet.addr = long(addr)
120 packet.size = int(size)
173 encodeMessage(proto_out, packet)
121 protolib.encodeMessage(proto_out, packet)
174
175 # We're done
176 ascii_in.close()
177 proto_out.close()
178
179if __name__ == "__main__":
180 main()
122
123 # We're done
124 ascii_in.close()
125 proto_out.close()
126
127if __name__ == "__main__":
128 main()