--- /dev/null
+#!/usr/bin/env python
+
+# Copyright (c) 2013 ARM Limited
+# All rights reserved
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder. You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Copyright 2008 Google Inc. All rights reserved.
+# http://code.google.com/p/protobuf/
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Andreas Hansson
+#
+
+# This script is used to dump protobuf packet traces to ASCII
+# format. It assumes that protoc has been executed and already
+# generated the Python package for the packet messages. This can
+# be done manually using:
+# protoc --python_out=. --proto_path=src/proto src/proto/packet.proto
+#
+# The ASCII trace format uses one line per request on the format cmd,
+# addr, size, tick,flags. For example:
+# r,128,64,4000,0
+# w,232123,64,500000,0
+
+import struct
+import sys
+import packet_pb2
+
+def DecodeVarint(in_file):
+ """
+ The decoding of the Varint32 is copied from
+ google.protobuf.internal.decoder and is only repeated here to
+ avoid depending on the internal functions in the library. If the
+ end of file is reached, return (0, 0).
+ """
+ result = 0
+ shift = 0
+ pos = 0
+ # Use a 32-bit mask
+ mask = 0xffffffff
+ while 1:
+ c = in_file.read(1)
+ if len(c) == 0:
+ return (0, 0)
+ b = struct.unpack('<B', c)[0]
+ result |= ((b & 0x7f) << shift)
+ pos += 1
+ if not (b & 0x80):
+ if result > 0x7fffffffffffffff:
+ result -= (1 << 64)
+ result |= ~mask
+ else:
+ result &= mask
+ return (result, pos)
+ shift += 7
+ if shift >= 64:
+ raise IOError('Too many bytes when decoding varint.')
+
+def decodeMessage(in_file, message):
+ """
+ Attempt to read a message from the file and decode it. Return
+ False if no message could be read.
+ """
+ try:
+ size, pos = DecodeVarint(in_file)
+ if size == 0:
+ return False
+ buf = in_file.read(size)
+ message.ParseFromString(buf)
+ return True
+ except IOError:
+ return False
+
+def main():
+ if len(sys.argv) != 3:
+ print "Usage: ", sys.argv[0], " <protobuf input> <ASCII output>"
+ exit(-1)
+
+ try:
+ proto_in = open(sys.argv[1], 'rb')
+ except IOError:
+ print "Failed to open ", sys.argv[1], " for reading"
+ exit(-1)
+
+ try:
+ ascii_out = open(sys.argv[2], 'w')
+ except IOError:
+ print "Failed to open ", sys.argv[2], " for writing"
+ exit(-1)
+
+ # Read the magic number in 4-byte Little Endian
+ magic_number = proto_in.read(4)
+
+ if magic_number != "gem5":
+ print "Unrecognized file"
+ exit(-1)
+
+ print "Parsing packet header"
+
+ # Add the packet header
+ header = packet_pb2.PacketHeader()
+ decodeMessage(proto_in, header)
+
+ print "Object id:", header.obj_id
+ print "Tick frequency:", header.tick_freq
+
+ print "Parsing packets"
+
+ num_packets = 0
+ ignored_flags = False
+ packet = packet_pb2.Packet()
+
+ # Decode the packet messages until we hit the end of the file
+ while decodeMessage(proto_in, packet):
+ num_packets += 1
+ # ReadReq is 1 and WriteReq is 4 in src/mem/packet.hh Command enum
+ cmd = 'r' if packet.cmd == 1 else ('w' if packet.cmd == 4 else 'u')
+ if packet.HasField('flags'):
+ # Currently not printing flags
+ ignored_flags = True
+ ascii_out.write('%s,%s,%s,%s\n' % (cmd, packet.addr, packet.size,
+ packet.tick))
+
+ print "Parsed packets:", num_packets
+ if ignored_flags:
+ print "Encountered packet flags that were ignored"
+
+ # We're done
+ ascii_out.close()
+ proto_in.close()
+
+if __name__ == "__main__":
+ main()
projects / gem5.git / commitdiff