gem5  v21.1.0.2
set_associative.cc
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2018 Inria
3  * Copyright (c) 2012-2014,2017 ARM Limited
4  * All rights reserved.
5  *
6  * The license below extends only to copyright in the software and shall
7  * not be construed as granting a license to any other intellectual
8  * property including but not limited to intellectual property relating
9  * to a hardware implementation of the functionality of the software
10  * licensed hereunder. You may use the software subject to the license
11  * terms below provided that you ensure that this notice is replicated
12  * unmodified and in its entirety in all distributions of the software,
13  * modified or unmodified, in source code or in binary form.
14  *
15  * Copyright (c) 2003-2005,2014 The Regents of The University of Michigan
16  * All rights reserved.
17  *
18  * Redistribution and use in source and binary forms, with or without
19  * modification, are permitted provided that the following conditions are
20  * met: redistributions of source code must retain the above copyright
21  * notice, this list of conditions and the following disclaimer;
22  * redistributions in binary form must reproduce the above copyright
23  * notice, this list of conditions and the following disclaimer in the
24  * documentation and/or other materials provided with the distribution;
25  * neither the name of the copyright holders nor the names of its
26  * contributors may be used to endorse or promote products derived from
27  * this software without specific prior written permission.
28  *
29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40  */
41 
48 
50 
51 namespace gem5
52 {
53 
56 {
57 }
58 
59 uint32_t
61 {
62  return (addr >> setShift) & setMask;
63 }
64 
65 Addr
67  const
68 {
69  return (tag << tagShift) | (entry->getSet() << setShift);
70 }
71 
74 {
75  return sets[extractSet(addr)];
76 }
77 
78 } // namespace gem5
gem5::ReplaceableEntry::getSet
uint32_t getSet() const
Get set number.
Definition: replaceable_entry.hh:104
gem5::BaseIndexingPolicy
A common base class for indexing table locations.
Definition: base.hh:66
gem5::BaseIndexingPolicy::Params
BaseIndexingPolicyParams Params
Convenience typedef.
Definition: base.hh:103
gem5::BaseIndexingPolicy::setMask
const unsigned setMask
Mask out all bits that aren't part of the set index.
Definition: base.hh:87
gem5::SetAssociative::regenerateAddr
Addr regenerateAddr(const Addr tag, const ReplaceableEntry *entry) const override
Regenerate an entry's address from its tag and assigned set and way.
Definition: set_associative.cc:66
std::vector
STL vector class.
Definition: stl.hh:37
set_associative.hh
gem5::SetAssociative::extractSet
virtual uint32_t extractSet(const Addr addr) const
Apply a hash function to calculate address set.
Definition: set_associative.cc:60
replaceable_entry.hh
gem5::BaseIndexingPolicy::sets
std::vector< std::vector< ReplaceableEntry * > > sets
The cache sets.
Definition: base.hh:92
gem5::SetAssociative::getPossibleEntries
std::vector< ReplaceableEntry * > getPossibleEntries(const Addr addr) const override
Find all possible entries for insertion and replacement of an address.
Definition: set_associative.cc:73
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::BaseIndexingPolicy::tagShift
const int tagShift
The amount to shift the address to get the tag.
Definition: base.hh:97
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
gem5::ReplaceableEntry
A replaceable entry is a basic entry in a 2d table-like structure that needs to have replacement func...
Definition: replaceable_entry.hh:63
gem5::SetAssociative::SetAssociative
SetAssociative(const Params &p)
Construct and initialize this policy.
Definition: set_associative.cc:54
gem5::BaseIndexingPolicy::setShift
const int setShift
The amount to shift the address to get the set.
Definition: base.hh:82
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84

Generated on Tue Sep 21 2021 12:25:30 for gem5 by doxygen 1.8.17