496a8c6c92
Bug fix for check on protobuf file frequency being different than global frequency. The ASCII encoder script is also fixed, and the example trace used in the regressions is updated.
128 lines
4.9 KiB
Python
Executable file
128 lines
4.9 KiB
Python
Executable file
#!/usr/bin/env python
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# Copyright (c) 2013-2014 ARM Limited
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# All rights reserved
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Andreas Hansson
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# This script is used to migrate ASCII packet traces to the protobuf
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# format currently used in gem5. It assumes that protoc has been
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# executed and already generated the Python package for the packet
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# messages. This can be done manually using:
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# protoc --python_out=. --proto_path=src/proto src/proto/packet.proto
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#
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# The ASCII trace format uses one line per request on the format cmd,
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# addr, size, tick. For example:
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# r,128,64,4000
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# w,232123,64,500000
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# This trace reads 64 bytes from decimal address 128 at tick 4000,
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# then writes 64 bytes to address 232123 at tick 500000.
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#
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# This script can of course also be used as a template to convert
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# other trace formats into the gem5 protobuf format
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import protolib
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import sys
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# Import the packet proto definitions. If they are not found, attempt
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# to generate them automatically. This assumes that the script is
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# executed from the gem5 root.
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try:
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import packet_pb2
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except:
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print "Did not find packet proto definitions, attempting to generate"
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from subprocess import call
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error = call(['protoc', '--python_out=util', '--proto_path=src/proto',
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'src/proto/packet.proto'])
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if not error:
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print "Generated packet proto definitions"
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try:
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import google.protobuf
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except:
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print "Please install the Python protobuf module"
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exit(-1)
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import packet_pb2
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else:
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print "Failed to import packet proto definitions"
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exit(-1)
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def main():
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if len(sys.argv) != 3:
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print "Usage: ", sys.argv[0], " <ASCII input> <protobuf output>"
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exit(-1)
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try:
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ascii_in = open(sys.argv[1], 'r')
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except IOError:
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print "Failed to open ", sys.argv[1], " for reading"
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exit(-1)
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try:
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proto_out = open(sys.argv[2], 'wb')
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except IOError:
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print "Failed to open ", sys.argv[2], " for writing"
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exit(-1)
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# Write the magic number in 4-byte Little Endian, similar to what
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# is done in src/proto/protoio.cc
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proto_out.write("gem5")
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# Add the packet header
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header = packet_pb2.PacketHeader()
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header.obj_id = "Converted ASCII trace " + sys.argv[1]
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# Assume the default tick rate
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header.tick_freq = 1000000000000
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protolib.encodeMessage(proto_out, header)
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# For each line in the ASCII trace, create a packet message and
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# write it to the encoded output
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for line in ascii_in:
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cmd, addr, size, tick = line.split(',')
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packet = packet_pb2.Packet()
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packet.tick = long(tick)
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# ReadReq is 1 and WriteReq is 4 in src/mem/packet.hh Command enum
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packet.cmd = 1 if cmd == 'r' else 4
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packet.addr = long(addr)
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packet.size = int(size)
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protolib.encodeMessage(proto_out, packet)
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# We're done
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ascii_in.close()
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proto_out.close()
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if __name__ == "__main__":
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main()
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