DecodeCache::AddrMap< Value, CacheChunkShift > Class Template Reference

A sparse map from an Addr to a Value, stored in page chunks. More...

#include <decode_cache.hh>

Classes
struct	CacheChunk

Public Member Functions
	AddrMap ()
	Constructor. More...
Value &	lookup (Addr addr)

Protected Types
typedef std::unordered_map< Addr, CacheChunk * >	ChunkMap
typedef ChunkMap::iterator	ChunkIt

Protected Member Functions
void	update (ChunkIt recentest)
	Update the mini cache of recent lookups. More...
CacheChunk *	getChunk (Addr addr)
	Attempt to find the CacheChunk which goes with a particular address. More...

Static Protected Member Functions
static constexpr Addr	chunkOffset (Addr addr)
static constexpr Addr	chunkStart (Addr addr)

Protected Attributes
ChunkIt	recent [2]
ChunkMap	chunkMap

Static Protected Attributes
static constexpr Addr	CacheChunkBytes = 1ULL << CacheChunkShift

Detailed Description

template<class Value, Addr CacheChunkShift = 12>
class DecodeCache::AddrMap< Value, CacheChunkShift >

A sparse map from an Addr to a Value, stored in page chunks.

Definition at line 46 of file decode_cache.hh.

Member Typedef Documentation

ChunkIt

template<class Value , Addr CacheChunkShift = 12>

typedef ChunkMap::iterator DecodeCache::AddrMap< Value, CacheChunkShift >::ChunkIt

protected

Definition at line 70 of file decode_cache.hh.

ChunkMap

template<class Value , Addr CacheChunkShift = 12>

typedef std::unordered_map<Addr, CacheChunk *> DecodeCache::AddrMap< Value, CacheChunkShift >::ChunkMap

protected

Definition at line 69 of file decode_cache.hh.

Constructor & Destructor Documentation

AddrMap()

template<class Value , Addr CacheChunkShift = 12>

DecodeCache::AddrMap< Value, CacheChunkShift >::AddrMap ( )

inline

Constructor.

Definition at line 121 of file decode_cache.hh.

Member Function Documentation

chunkOffset()

template<class Value , Addr CacheChunkShift = 12>

static constexpr Addr DecodeCache::AddrMap< Value, CacheChunkShift >::chunkOffset ( Addr  addr )

inlinestaticconstexprprotected

Definition at line 52 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::lookup().

chunkStart()

template<class Value , Addr CacheChunkShift = 12>

static constexpr Addr DecodeCache::AddrMap< Value, CacheChunkShift >::chunkStart ( Addr  addr )

inlinestaticconstexprprotected

Definition at line 58 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::getChunk().

getChunk()

template<class Value , Addr CacheChunkShift = 12>

CacheChunk* DecodeCache::AddrMap< Value, CacheChunkShift >::getChunk ( Addr  addr )

inlineprotected

Attempt to find the CacheChunk which goes with a particular address.

First check the small cache of recent results, then actually look in the hash map.

Parameters

addr	The address to look up.

Definition at line 89 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::lookup().

lookup()

template<class Value , Addr CacheChunkShift = 12>

Value& DecodeCache::AddrMap< Value, CacheChunkShift >::lookup ( Addr  addr )

inline

Definition at line 127 of file decode_cache.hh.

Referenced by X86ISA::Decoder::doResetState().

update()

template<class Value , Addr CacheChunkShift = 12>

void DecodeCache::AddrMap< Value, CacheChunkShift >::update ( ChunkIt  recentest )

inlineprotected

Update the mini cache of recent lookups.

Parameters

recentest

The most recent result;

Definition at line 78 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::getChunk().

Member Data Documentation

CacheChunkBytes

template<class Value , Addr CacheChunkShift = 12>

constexpr Addr DecodeCache::AddrMap< Value, CacheChunkShift >::CacheChunkBytes = 1ULL << CacheChunkShift

staticconstexprprotected

Definition at line 49 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::chunkOffset(), and DecodeCache::AddrMap< RefCountingPtr >::chunkStart().

chunkMap

template<class Value , Addr CacheChunkShift = 12>

ChunkMap DecodeCache::AddrMap< Value, CacheChunkShift >::chunkMap

protected

Definition at line 73 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::AddrMap(), and DecodeCache::AddrMap< RefCountingPtr >::getChunk().

recent

template<class Value , Addr CacheChunkShift = 12>

ChunkIt DecodeCache::AddrMap< Value, CacheChunkShift >::recent[2]

protected

Definition at line 72 of file decode_cache.hh.

Referenced by DecodeCache::AddrMap< RefCountingPtr >::AddrMap(), DecodeCache::AddrMap< RefCountingPtr >::getChunk(), and DecodeCache::AddrMap< RefCountingPtr >::update().

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The documentation for this class was generated from the following file:

• cpu/decode_cache.hh