93e283abb3
This patch adds a prefetcher for the ruby memory system. The prefetcher is based on a prefetcher implemented by others (well, I don't know who wrote the original). The prefetcher does stride-based prefetching, both unit and non-unit. It obseves the misses in the cache and trains on these. After the training period is over, the prefetcher starts issuing prefetch requests to the controller.
118 lines
4.1 KiB
Python
118 lines
4.1 KiB
Python
# -*- mode:python -*-
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# Copyright (c) 2009 The Hewlett-Packard Development Company
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# All rights reserved.
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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: Nathan Binkert
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import os
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import sys
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from os.path import basename, isdir, join as joinpath
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import SCons
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Import('*')
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if env['TARGET_ISA'] == 'no':
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Return()
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if env['PROTOCOL'] == 'None':
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Return()
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def do_embed_text(target, source, env):
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"""convert a text file into a file that can be embedded in C
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using an #include statement, that defines a \"const char *\" pointing
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to the same text.
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This is useful to embed scripts and configuration files in object files.
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"""
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escape = [ "\'", "\"", "\\", "\?" ]
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# reads the text file in, line by line, converting it to a C string
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fin = open(str(source[0]), 'r')
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fout = open(str(target[0]), 'w' )
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fout.write("static const char *%s =\n" % source[1].get_contents());
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for l in fin:
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# add escape sequences for the characters in escape
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fout.write("\"")
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for char in l:
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if char == "\n":
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break
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if char in escape:
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fout.write("\\")
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fout.write(char)
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else:
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fout.write(char)
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fout.write("\\n\"\n");
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fout.write(";\n");
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fin.close()
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fout.close()
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#
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# Link includes
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#
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generated_dir = Dir('../protocol')
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def MakeIncludeAction(target, source, env):
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f = file(str(target[0]), 'w')
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for s in source:
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print >>f, '#include "%s"' % str(s.abspath)
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f.close()
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def MakeInclude(source):
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target = generated_dir.File(basename(source))
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include_action = MakeAction(MakeIncludeAction, Transform("MAKE INC", 1))
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env.Command(target, source, include_action)
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MakeInclude('slicc_interface/AbstractEntry.hh')
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MakeInclude('slicc_interface/AbstractCacheEntry.hh')
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MakeInclude('slicc_interface/AbstractProtocol.hh')
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MakeInclude('slicc_interface/Message.hh')
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MakeInclude('slicc_interface/NetworkMessage.hh')
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MakeInclude('slicc_interface/RubyRequest.hh')
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# External types
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MakeInclude('buffers/MessageBuffer.hh')
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MakeInclude('common/Address.hh')
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MakeInclude('common/DataBlock.hh')
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MakeInclude('common/NetDest.hh')
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MakeInclude('common/Set.hh')
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MakeInclude('filters/GenericBloomFilter.hh')
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MakeInclude('structures/Prefetcher.hh')
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MakeInclude('system/CacheMemory.hh')
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MakeInclude('system/DMASequencer.hh')
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MakeInclude('system/DirectoryMemory.hh')
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MakeInclude('system/MachineID.hh')
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MakeInclude('system/MemoryControl.hh')
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MakeInclude('system/WireBuffer.hh')
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MakeInclude('system/PerfectCacheMemory.hh')
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MakeInclude('system/PersistentTable.hh')
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MakeInclude('system/Sequencer.hh')
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MakeInclude('system/TBETable.hh')
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MakeInclude('system/TimerTable.hh')
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