decode_packet_trace.py revision 12213:e0083524df0c
112841Sgabeblack@google.com#!/usr/bin/env python2 212841Sgabeblack@google.com 312841Sgabeblack@google.com# Copyright (c) 2013-2014 ARM Limited 412841Sgabeblack@google.com# All rights reserved 512841Sgabeblack@google.com# 612841Sgabeblack@google.com# The license below extends only to copyright in the software and shall 712841Sgabeblack@google.com# not be construed as granting a license to any other intellectual 812841Sgabeblack@google.com# property including but not limited to intellectual property relating 912841Sgabeblack@google.com# to a hardware implementation of the functionality of the software 1012841Sgabeblack@google.com# licensed hereunder. You may use the software subject to the license 1112841Sgabeblack@google.com# terms below provided that you ensure that this notice is replicated 1212841Sgabeblack@google.com# unmodified and in its entirety in all distributions of the software, 1312841Sgabeblack@google.com# modified or unmodified, in source code or in binary form. 1412841Sgabeblack@google.com# 1512841Sgabeblack@google.com# Redistribution and use in source and binary forms, with or without 1612841Sgabeblack@google.com# modification, are permitted provided that the following conditions are 1712841Sgabeblack@google.com# met: redistributions of source code must retain the above copyright 1812841Sgabeblack@google.com# notice, this list of conditions and the following disclaimer; 1912841Sgabeblack@google.com# redistributions in binary form must reproduce the above copyright 2012841Sgabeblack@google.com# notice, this list of conditions and the following disclaimer in the 2112841Sgabeblack@google.com# documentation and/or other materials provided with the distribution; 2212841Sgabeblack@google.com# neither the name of the copyright holders nor the names of its 2312841Sgabeblack@google.com# contributors may be used to endorse or promote products derived from 2412841Sgabeblack@google.com# this software without specific prior written permission. 2512841Sgabeblack@google.com# 2612841Sgabeblack@google.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2712841Sgabeblack@google.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2812841Sgabeblack@google.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2912841Sgabeblack@google.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 3012841Sgabeblack@google.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3112841Sgabeblack@google.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3212841Sgabeblack@google.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3312841Sgabeblack@google.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3412841Sgabeblack@google.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3512841Sgabeblack@google.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3613201Sgabeblack@google.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3713201Sgabeblack@google.com# 3812841Sgabeblack@google.com# Authors: Andreas Hansson 3912841Sgabeblack@google.com 4012841Sgabeblack@google.com# This script is used to dump protobuf packet traces to ASCII 4113201Sgabeblack@google.com# format. 4212841Sgabeblack@google.com 4313201Sgabeblack@google.comimport os 4412841Sgabeblack@google.comimport protolib 4512841Sgabeblack@google.comimport subprocess 4612841Sgabeblack@google.comimport sys 4712841Sgabeblack@google.com 4813201Sgabeblack@google.comutil_dir = os.path.dirname(os.path.realpath(__file__)) 4912841Sgabeblack@google.com# Make sure the proto definitions are up to date. 5013201Sgabeblack@google.comsubprocess.check_call(['make', '--quiet', '-C', util_dir, 'packet_pb2.py']) 5112841Sgabeblack@google.comimport packet_pb2 5212841Sgabeblack@google.com 5312841Sgabeblack@google.comdef main(): 5412841Sgabeblack@google.com if len(sys.argv) != 3: 5512841Sgabeblack@google.com print "Usage: ", sys.argv[0], " <protobuf input> <ASCII output>" 5613201Sgabeblack@google.com exit(-1) 5712841Sgabeblack@google.com 5813201Sgabeblack@google.com # Open the file in read mode 5912841Sgabeblack@google.com proto_in = protolib.openFileRd(sys.argv[1]) 6012841Sgabeblack@google.com 6112841Sgabeblack@google.com try: 6212841Sgabeblack@google.com ascii_out = open(sys.argv[2], 'w') 6312841Sgabeblack@google.com except IOError: 6413201Sgabeblack@google.com print "Failed to open ", sys.argv[2], " for writing" 6512841Sgabeblack@google.com exit(-1) 6613201Sgabeblack@google.com 6712841Sgabeblack@google.com # Read the magic number in 4-byte Little Endian 6812841Sgabeblack@google.com magic_number = proto_in.read(4) 6912841Sgabeblack@google.com 7012841Sgabeblack@google.com if magic_number != "gem5": 7113201Sgabeblack@google.com print "Unrecognized file", sys.argv[1] 7212841Sgabeblack@google.com exit(-1) 7313201Sgabeblack@google.com 7412841Sgabeblack@google.com print "Parsing packet header" 7512841Sgabeblack@google.com 7612841Sgabeblack@google.com # Add the packet header 7712841Sgabeblack@google.com header = packet_pb2.PacketHeader() 78 protolib.decodeMessage(proto_in, header) 79 80 print "Object id:", header.obj_id 81 print "Tick frequency:", header.tick_freq 82 83 for id_string in header.id_strings: 84 print 'Master id %d: %s' % (id_string.key, id_string.value) 85 86 print "Parsing packets" 87 88 num_packets = 0 89 packet = packet_pb2.Packet() 90 91 # Decode the packet messages until we hit the end of the file 92 while protolib.decodeMessage(proto_in, packet): 93 num_packets += 1 94 # ReadReq is 1 and WriteReq is 4 in src/mem/packet.hh Command enum 95 cmd = 'r' if packet.cmd == 1 else ('w' if packet.cmd == 4 else 'u') 96 if packet.HasField('pkt_id'): 97 ascii_out.write('%s,' % (packet.pkt_id)) 98 if packet.HasField('flags'): 99 ascii_out.write('%s,%s,%s,%s,%s' % (cmd, packet.addr, packet.size, 100 packet.flags, packet.tick)) 101 else: 102 ascii_out.write('%s,%s,%s,%s' % (cmd, packet.addr, packet.size, 103 packet.tick)) 104 if packet.HasField('pc'): 105 ascii_out.write(',%s\n' % (packet.pc)) 106 else: 107 ascii_out.write('\n') 108 109 print "Parsed packets:", num_packets 110 111 # We're done 112 ascii_out.close() 113 proto_in.close() 114 115if __name__ == "__main__": 116 main() 117