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-rwxr-xr-xutil/decode_inst_trace.py151
1 files changed, 151 insertions, 0 deletions
diff --git a/util/decode_inst_trace.py b/util/decode_inst_trace.py
new file mode 100755
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+++ b/util/decode_inst_trace.py
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+#!/usr/bin/env python
+
+# Copyright (c) 2013-2014 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.
+#
+# Authors: Ali Saidi
+# Andreas Hansson
+
+# This script is used to dump protobuf instruction traces to ASCII
+# format. It assumes that protoc has been executed and already
+# generated the Python package for the inst messages. This can
+# be done manually using:
+# protoc --python_out=. inst.proto
+# The ASCII trace format uses one line per request.
+
+import protolib
+import sys
+
+# Import the packet proto definitions
+try:
+ import inst_pb2
+except:
+ print "Did not find protobuf inst definitions, attempting to generate"
+ from subprocess import call
+ error = call(['protoc', '--python_out=util', '--proto_path=src/proto',
+ 'src/proto/inst.proto'])
+ if not error:
+ print "Generated inst proto definitions"
+
+ try:
+ import google.protobuf
+ except:
+ print "Please install Python protobuf module"
+ exit(-1)
+
+ import inst_pb2
+ else:
+ print "Failed to import inst proto definitions"
+ exit(-1)
+
+def main():
+ if len(sys.argv) != 3:
+ print "Usage: ", sys.argv[0], " <protobuf input> <ASCII output>"
+ exit(-1)
+
+ # Open the file in read mode
+ proto_in = protolib.openFileRd(sys.argv[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", sys.argv[1]
+ exit(-1)
+
+ print "Parsing instruction header"
+
+ # Add the packet header
+ header = inst_pb2.InstHeader()
+ protolib.decodeMessage(proto_in, header)
+
+ print "Object id:", header.obj_id
+ print "Tick frequency:", header.tick_freq
+ print "Memory addresses included:", header.has_mem
+
+ if header.ver != 0:
+ print "Warning: file version newer than decoder:", header.ver
+ print "This decoder may not understand how to decode this file"
+
+
+ print "Parsing instructions"
+
+ num_insts = 0
+ inst = inst_pb2.Inst()
+
+ # Decode the inst messages until we hit the end of the file
+ optional_fields = ('tick', 'type', 'inst_flags', 'addr', 'size', 'mem_flags')
+ while protolib.decodeMessage(proto_in, inst):
+ # If we have a tick use it, otherwise count instructions
+ if inst.HasField('tick'):
+ tick = inst.tick
+ else:
+ tick = num_insts
+
+ if inst.HasField('nodeid'):
+ node_id = inst.nodeid
+ else:
+ node_id = 0;
+ if inst.HasField('cpuid'):
+ cpu_id = inst.cpuid
+ else:
+ cpu_id = 0;
+
+ ascii_out.write('%-20d: (%03d/%03d) %#010x @ %#016x ' % (tick, node_id, cpu_id,
+ inst.inst, inst.pc))
+
+ if inst.HasField('type'):
+ ascii_out.write(' : %10s' % inst_pb2._INST_INSTTYPE.values_by_number[inst.type].name)
+
+ for mem_acc in inst.mem_access:
+ ascii_out.write(" %#x-%#x;" % (mem_acc.addr, mem_acc.addr + mem_acc.size))
+
+ ascii_out.write('\n')
+ num_insts += 1
+
+ print "Parsed instructions:", num_insts
+
+ # We're done
+ ascii_out.close()
+ proto_in.close()
+
+if __name__ == "__main__":
+ main()