Class containing the information needed by the prefetch to train and generate new prefetch requests. More...

#include <base.hh>

Public Member Functions
Addr	getAddr () const
	Obtains the address value of this Prefetcher address.

bool	isSecure () const
	Returns true if the address targets the secure memory space.

Addr	getPC () const
	Returns the program counter that generated this request.

bool	hasPC () const
	Returns true if the associated program counter is valid.

RequestorID	getRequestorId () const
	Gets the requestor ID that generated this address.

unsigned int	getSize () const
	Gets the size of the request triggering this event.

bool	isWrite () const
	Checks if the request that caused this prefetch event was a write request.

Addr	getPaddr () const
	Gets the physical address of the request.

bool	isCacheMiss () const
	Check if this event comes from a cache miss.

template<typename T>
T	get (ByteOrder endian) const
	Gets the associated data of the request triggering the event.

bool	sameAddr (PrefetchInfo const &pfi) const
	Check for equality.

	PrefetchInfo (PacketPtr pkt, Addr addr, bool miss)
	Constructs a PrefetchInfo using a PacketPtr.

	PrefetchInfo (PrefetchInfo const &pfi, Addr addr)
	Constructs a PrefetchInfo using a new address value and another PrefetchInfo as a reference.

	~PrefetchInfo ()

Private Attributes
Addr	address
	The address used to train and generate prefetches.

Addr	pc
	The program counter that generated this address.

RequestorID	requestorId
	The requestor ID that generated this address.

bool	validPC
	Validity bit for the PC of this address.

bool	secure
	Whether this address targets the secure memory space.

unsigned int	size
	Size in bytes of the request triggering this event.

bool	write
	Whether this event comes from a write request.

Addr	paddress
	Physical address, needed because address can be virtual.

bool	cacheMiss
	Whether this event comes from a cache miss.

uint8_t *	data
	Pointer to the associated request data.

Detailed Description

Class containing the information needed by the prefetch to train and generate new prefetch requests.

Definition at line 112 of file base.hh.

Constructor & Destructor Documentation

◆ PrefetchInfo() [1/2]

gem5::prefetch::Base::PrefetchInfo::PrefetchInfo	(	PacketPtr	pkt,
		Addr	addr,
		bool	miss )

Constructs a PrefetchInfo using a PacketPtr.

Parameters

pkt	PacketPtr used to generate the PrefetchInfo
addr	the address value of the new object, this address is used to train the prefetcher
miss	whether this event comes from a cache miss

Definition at line 61 of file base.cc.

References gem5::X86ISA::addr, address, cacheMiss, getPaddr(), getPC(), getSize(), gem5::Packet::hasData(), hasPC(), isSecure(), isWrite(), paddress, pc, gem5::Packet::req, requestorId, secure, size, validPC, and write.

Referenced by PrefetchInfo(), and sameAddr().

◆ PrefetchInfo() [2/2]

gem5::prefetch::Base::PrefetchInfo::PrefetchInfo	(	PrefetchInfo const &	pfi,
		Addr	addr )

Constructs a PrefetchInfo using a new address value and another PrefetchInfo as a reference.

Parameters

pfi	PrefetchInfo used to generate this new object
addr	the address value of the new object

Definition at line 77 of file base.cc.

References gem5::X86ISA::addr, address, cacheMiss, data, paddress, pc, PrefetchInfo(), requestorId, secure, size, validPC, and write.

◆ ~PrefetchInfo()

gem5::prefetch::Base::PrefetchInfo::~PrefetchInfo ( )

inline

Definition at line 271 of file base.hh.

References data.

Member Function Documentation

◆ get()

template<typename T>

T gem5::prefetch::Base::PrefetchInfo::get ( ByteOrder endian ) const

inline

Gets the associated data of the request triggering the event.

Parameters

Byte	ordering of the stored data

Returns: the data

Definition at line 226 of file base.hh.

References gem5::betoh(), data, gem5::letoh(), and panic.

Referenced by gem5::prefetch::IndirectMemory::calculatePrefetch().

◆ getAddr()

Addr gem5::prefetch::Base::PrefetchInfo::getAddr ( ) const

inline

Obtains the address value of this Prefetcher address.

Returns: the addres value.

Definition at line 140 of file base.hh.

References address.

◆ getPaddr()

Addr gem5::prefetch::Base::PrefetchInfo::getPaddr ( ) const

inline

Gets the physical address of the request.

Returns: physical address of the request

Definition at line 205 of file base.hh.

References paddress.

Referenced by gem5::prefetch::STeMS::calculatePrefetch(), and PrefetchInfo().

◆ getPC()

Addr gem5::prefetch::Base::PrefetchInfo::getPC ( ) const

inline

Returns the program counter that generated this request.

Returns: the pc value

Definition at line 158 of file base.hh.

References hasPC(), and pc.

Referenced by gem5::prefetch::DeltaCorrelatingPredictionTables::calculatePrefetch(), gem5::prefetch::IndirectMemory::calculatePrefetch(), gem5::prefetch::IrregularStreamBuffer::calculatePrefetch(), gem5::prefetch::PIF::calculatePrefetch(), gem5::prefetch::Sms::calculatePrefetch(), gem5::prefetch::STeMS::calculatePrefetch(), gem5::prefetch::Stride::calculatePrefetch(), gem5::prefetch::Queued::createPrefetchRequest(), and PrefetchInfo().

◆ getRequestorId()

RequestorID gem5::prefetch::Base::PrefetchInfo::getRequestorId ( ) const

inline

Gets the requestor ID that generated this address.

Returns: the requestor ID that generated this address

Definition at line 177 of file base.hh.

References requestorId.

Referenced by gem5::prefetch::Stride::calculatePrefetch().

◆ getSize()

unsigned int gem5::prefetch::Base::PrefetchInfo::getSize ( ) const

inline

Gets the size of the request triggering this event.

Returns: the size in bytes of the request triggering this event

Definition at line 186 of file base.hh.

References size.

Referenced by gem5::prefetch::IndirectMemory::calculatePrefetch(), and PrefetchInfo().

◆ hasPC()

bool gem5::prefetch::Base::PrefetchInfo::hasPC ( ) const

inline

Returns true if the associated program counter is valid.

Returns: true if the program counter has a valid value

Definition at line 168 of file base.hh.

References validPC.

Referenced by gem5::prefetch::DeltaCorrelatingPredictionTables::calculatePrefetch(), gem5::prefetch::IndirectMemory::calculatePrefetch(), gem5::prefetch::IrregularStreamBuffer::calculatePrefetch(), gem5::prefetch::PIF::calculatePrefetch(), gem5::prefetch::Sms::calculatePrefetch(), gem5::prefetch::STeMS::calculatePrefetch(), gem5::prefetch::Stride::calculatePrefetch(), getPC(), and PrefetchInfo().

◆ isCacheMiss()

bool gem5::prefetch::Base::PrefetchInfo::isCacheMiss ( ) const

inline

Check if this event comes from a cache miss.

Returns: true if this event comes from a cache miss

Definition at line 214 of file base.hh.

References cacheMiss.

Referenced by gem5::prefetch::IndirectMemory::calculatePrefetch(), and gem5::prefetch::STeMS::calculatePrefetch().

◆ isSecure()

bool gem5::prefetch::Base::PrefetchInfo::isSecure ( ) const

inline

Returns true if the address targets the secure memory space.

Returns: true if the address targets the secure memory space.

Definition at line 149 of file base.hh.

References secure.

Referenced by gem5::prefetch::AccessMapPatternMatching::calculatePrefetch(), gem5::prefetch::IndirectMemory::calculatePrefetch(), gem5::prefetch::IrregularStreamBuffer::calculatePrefetch(), gem5::prefetch::PIF::calculatePrefetch(), gem5::prefetch::SignaturePath::calculatePrefetch(), gem5::prefetch::STeMS::calculatePrefetch(), gem5::prefetch::Stride::calculatePrefetch(), gem5::prefetch::Queued::insert(), gem5::prefetch::Queued::notify(), PrefetchInfo(), and sameAddr().

◆ isWrite()

bool gem5::prefetch::Base::PrefetchInfo::isWrite ( ) const

inline

Checks if the request that caused this prefetch event was a write request.

Returns: true if the request causing this event is a write request

Definition at line 196 of file base.hh.

References write.

Referenced by gem5::prefetch::IndirectMemory::calculatePrefetch(), and PrefetchInfo().

◆ sameAddr()

bool gem5::prefetch::Base::PrefetchInfo::sameAddr ( PrefetchInfo const & pfi ) const

inline

Check for equality.

Parameters

pfi	PrefetchInfo to compare against

Returns: True if this object and the provided one are equal

Definition at line 248 of file base.hh.

References getAddr(), isSecure(), and PrefetchInfo().

Member Data Documentation

◆ address

Addr gem5::prefetch::Base::PrefetchInfo::address

private

The address used to train and generate prefetches.

Definition at line 115 of file base.hh.

Referenced by getAddr(), PrefetchInfo(), and PrefetchInfo().

◆ cacheMiss

bool gem5::prefetch::Base::PrefetchInfo::cacheMiss

private

Whether this event comes from a cache miss.

Definition at line 131 of file base.hh.

Referenced by isCacheMiss(), PrefetchInfo(), and PrefetchInfo().

◆ data

uint8_t* gem5::prefetch::Base::PrefetchInfo::data

private

Pointer to the associated request data.

Definition at line 133 of file base.hh.

Referenced by get(), PrefetchInfo(), and ~PrefetchInfo().

◆ paddress

Addr gem5::prefetch::Base::PrefetchInfo::paddress

private

Physical address, needed because address can be virtual.

Definition at line 129 of file base.hh.

Referenced by getPaddr(), PrefetchInfo(), and PrefetchInfo().

◆ pc

Addr gem5::prefetch::Base::PrefetchInfo::pc

private

The program counter that generated this address.

Definition at line 117 of file base.hh.

Referenced by getPC(), PrefetchInfo(), and PrefetchInfo().

◆ requestorId

RequestorID gem5::prefetch::Base::PrefetchInfo::requestorId

private

The requestor ID that generated this address.

Definition at line 119 of file base.hh.

Referenced by getRequestorId(), PrefetchInfo(), and PrefetchInfo().

◆ secure

bool gem5::prefetch::Base::PrefetchInfo::secure

private

Whether this address targets the secure memory space.

Definition at line 123 of file base.hh.

Referenced by isSecure(), PrefetchInfo(), and PrefetchInfo().

◆ size

unsigned int gem5::prefetch::Base::PrefetchInfo::size

private

Size in bytes of the request triggering this event.

Definition at line 125 of file base.hh.

Referenced by getSize(), PrefetchInfo(), and PrefetchInfo().

◆ validPC

bool gem5::prefetch::Base::PrefetchInfo::validPC

private

Validity bit for the PC of this address.

Definition at line 121 of file base.hh.

Referenced by hasPC(), PrefetchInfo(), and PrefetchInfo().

◆ write

bool gem5::prefetch::Base::PrefetchInfo::write

private

Whether this event comes from a write request.

Definition at line 127 of file base.hh.

Referenced by isWrite(), PrefetchInfo(), and PrefetchInfo().

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

mem/cache/prefetch/base.hh
mem/cache/prefetch/base.cc

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ PrefetchInfo() [1/2]

◆ PrefetchInfo() [2/2]

◆ ~PrefetchInfo()

Member Function Documentation

◆ get()

◆ getAddr()

◆ getPaddr()

◆ getPC()

◆ getRequestorId()

◆ getSize()

◆ hasPC()

◆ isCacheMiss()

◆ isSecure()

◆ isWrite()

◆ sameAddr()

Member Data Documentation

◆ address

◆ cacheMiss

◆ data

◆ paddress

◆ pc

◆ requestorId

◆ secure

◆ size

◆ validPC

◆ write