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Diffstat (limited to 'src/mem/cache/tags/indexing_policies/set_associative.cc')
-rw-r--r-- | src/mem/cache/tags/indexing_policies/set_associative.cc | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/mem/cache/tags/indexing_policies/set_associative.cc b/src/mem/cache/tags/indexing_policies/set_associative.cc new file mode 100644 index 000000000..d5fe8ffd0 --- /dev/null +++ b/src/mem/cache/tags/indexing_policies/set_associative.cc @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2018 Inria + * Copyright (c) 2012-2014,2017 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. + * + * Copyright (c) 2003-2005,2014 The Regents of The University of Michigan + * All rights reserved. + * + * 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: Daniel Carvalho + * Erik Hallnor + */ + +/** + * @file + * Definitions of a set associative indexing policy. + */ + +#include "mem/cache/tags/indexing_policies/set_associative.hh" + +#include "mem/cache/replacement_policies/base.hh" + +SetAssociative::SetAssociative(const Params *p) + : BaseIndexingPolicy(p) +{ +} + +uint32_t +SetAssociative::extractSet(const Addr addr) const +{ + return (addr >> setShift) & setMask; +} + +Addr +SetAssociative::regenerateAddr(const Addr tag, const ReplaceableEntry* entry) + const +{ + return (tag << tagShift) | (entry->getSet() << setShift); +} + +std::vector<ReplaceableEntry*> +SetAssociative::getPossibleEntries(const Addr addr) const +{ + return sets[extractSet(addr)]; +} + +SetAssociative* +SetAssociativeParams::create() +{ + return new SetAssociative(this); +} |