gem5
v21.2.1.1
mem
cache
tags
indexing_policies
base.hh
Go to the documentation of this file.
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/*
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* Copyright (c) 2018 Inria
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* Copyright (c) 2012-2014,2017 ARM Limited
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* Copyright (c) 2003-2005,2014 The Regents of The University of Michigan
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#ifndef __MEM_CACHE_INDEXING_POLICIES_BASE_HH__
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#define __MEM_CACHE_INDEXING_POLICIES_BASE_HH__
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#include <vector>
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#include "params/BaseIndexingPolicy.hh"
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#include "
sim/sim_object.hh
"
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namespace
gem5
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{
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class
ReplaceableEntry;
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66
class
BaseIndexingPolicy
:
public
SimObject
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{
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protected
:
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const
unsigned
assoc
;
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77
const
uint32_t
numSets
;
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82
const
int
setShift
;
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87
const
unsigned
setMask
;
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92
std::vector<std::vector<ReplaceableEntry*>
>
sets
;
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const
int
tagShift
;
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public
:
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typedef
BaseIndexingPolicyParams
Params
;
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BaseIndexingPolicy
(
const
Params
&
p
);
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~BaseIndexingPolicy
() {};
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void
setEntry
(
ReplaceableEntry
* entry,
const
uint64_t
index
);
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ReplaceableEntry
*
getEntry
(
const
uint32_t set,
const
uint32_t way)
const
;
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139
virtual
Addr
extractTag
(
const
Addr
addr
)
const
;
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virtual
std::vector<ReplaceableEntry*>
getPossibleEntries
(
const
Addr
addr
)
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const
= 0;
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virtual
Addr
regenerateAddr
(
const
Addr
tag,
const
ReplaceableEntry
* entry)
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const
= 0;
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};
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}
// namespace gem5
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#endif //__MEM_CACHE_INDEXING_POLICIES_BASE_HH__
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::MipsISA::index
Bitfield< 30, 0 > index
Definition:
pra_constants.hh:47
std::vector
STL vector class.
Definition:
stl.hh:37
gem5::BaseIndexingPolicy::BaseIndexingPolicy
BaseIndexingPolicy(const Params &p)
Construct and initialize this policy.
Definition:
base.cc:58
gem5::BaseIndexingPolicy::getPossibleEntries
virtual std::vector< ReplaceableEntry * > getPossibleEntries(const Addr addr) const =0
Find all possible entries for insertion and replacement of an address.
gem5::BaseIndexingPolicy::sets
std::vector< std::vector< ReplaceableEntry * > > sets
The cache sets.
Definition:
base.hh:92
sim_object.hh
gem5::BaseIndexingPolicy::assoc
const unsigned assoc
The associativity.
Definition:
base.hh:72
gem5::MipsISA::p
Bitfield< 0 > p
Definition:
pra_constants.hh:326
gem5::BaseIndexingPolicy::~BaseIndexingPolicy
~BaseIndexingPolicy()
Destructor.
Definition:
base.hh:113
gem5::BaseIndexingPolicy::tagShift
const int tagShift
The amount to shift the address to get the tag.
Definition:
base.hh:97
gem5::SimObject
Abstract superclass for simulation objects.
Definition:
sim_object.hh:146
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::BaseIndexingPolicy::setEntry
void setEntry(ReplaceableEntry *entry, const uint64_t index)
Associate a pointer to an entry to its physical counterpart.
Definition:
base.cc:81
gem5::BaseIndexingPolicy::regenerateAddr
virtual Addr regenerateAddr(const Addr tag, const ReplaceableEntry *entry) const =0
Regenerate an entry's address from its tag and assigned indexing bits.
gem5::BaseIndexingPolicy::numSets
const uint32_t numSets
The number of sets in the cache.
Definition:
base.hh:77
gem5::BaseIndexingPolicy::getEntry
ReplaceableEntry * getEntry(const uint32_t set, const uint32_t way) const
Get an entry based on its set and way.
Definition:
base.cc:75
gem5::BaseIndexingPolicy::extractTag
virtual Addr extractTag(const Addr addr) const
Generate the tag from the given address.
Definition:
base.cc:99
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:
tlb.cc:60
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition:
types.hh:84
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