This proxy attempts to translate virtual addresses using the TLBs. More...

#include <translating_port_proxy.hh>

Inheritance diagram for gem5::TranslatingPortProxy:

Public Member Functions
	TranslatingPortProxy (ThreadContext *tc, Request::Flags _flags=0)

bool	tryReadBlob (Addr addr, void *p, int size) const override
	Version of tryReadblob that translates virt->phys and deals with page boundries. More...

bool	tryWriteBlob (Addr addr, const void *p, int size) const override
	Version of tryWriteBlob that translates virt->phys and deals with page boundries. More...

bool	tryMemsetBlob (Addr address, uint8_t v, int size) const override
	Fill size bytes starting at addr with byte value val. More...

Public Member Functions inherited from gem5::PortProxy
	PortProxy (SendFunctionalFunc func, unsigned int cache_line_size)

	PortProxy (ThreadContext *tc, unsigned int cache_line_size)

	PortProxy (const RequestPort &port, unsigned int cache_line_size)

virtual	~PortProxy ()

void	readBlobPhys (Addr addr, Request::Flags flags, void *p, int size) const
	Fixed functionality for use in base classes. More...

void	writeBlobPhys (Addr addr, Request::Flags flags, const void *p, int size) const
	Write size bytes from p to physical address. More...

void	memsetBlobPhys (Addr addr, Request::Flags flags, uint8_t v, int size) const
	Fill size bytes starting at physical addr with byte value val. More...

void	readBlob (Addr addr, void *p, int size) const
	Higher level interfaces based on the above. More...

void	writeBlob (Addr addr, const void *p, int size) const
	Same as tryWriteBlob, but insists on success. More...

void	memsetBlob (Addr addr, uint8_t v, int size) const
	Same as tryMemsetBlob, but insists on success. More...

template<typename T >
T	read (Addr address) const
	Read sizeof(T) bytes from address and return as object T. More...

template<typename T >
void	write (Addr address, const T &data) const
	Write object T to address. More...

template<typename T >
T	read (Addr address, ByteOrder guest_byte_order) const
	Read sizeof(T) bytes from address and return as object T. More...

template<typename T >
void	write (Addr address, T data, ByteOrder guest_byte_order) const
	Write object T to address. More...

bool	tryWriteString (Addr addr, const char *str) const
	Write the string str into guest memory at address addr. More...

void	writeString (Addr addr, const char *str) const
	Same as tryWriteString, but insists on success. More...

bool	tryReadString (std::string &str, Addr addr) const
	Reads the string at guest address addr into the std::string str. More...

void	readString (std::string &str, Addr addr) const
	Same as tryReadString, but insists on success. More...

bool	tryReadString (char *str, Addr addr, size_t maxlen) const
	Reads the string at guest address addr into the char * str, reading up to maxlen characters. More...

void	readString (char *str, Addr addr, size_t maxlen) const
	Same as tryReadString, but insists on success. More...

Protected Member Functions
virtual bool	fixupAddr (Addr addr, BaseMMU::Mode mode) const

Protected Attributes
ThreadContext *	_tc

const Addr	pageBytes

Request::Flags	flags

Private Member Functions
bool	tryTLBsOnce (RequestPtr req, BaseMMU::Mode) const

bool	tryTLBs (RequestPtr req, BaseMMU::Mode) const

Additional Inherited Members
Public Types inherited from gem5::PortProxy
typedef std::function< void(PacketPtr pkt)>	SendFunctionalFunc

Detailed Description

This proxy attempts to translate virtual addresses using the TLBs.

If it fails, subclasses can override the fixupAddr virtual method to try to recover, and then attempt the translation again. If it still fails then the access as a whole fails.

Definition at line 58 of file translating_port_proxy.hh.

Constructor & Destructor Documentation

◆ TranslatingPortProxy()

gem5::TranslatingPortProxy::TranslatingPortProxy	(	ThreadContext *	tc,
		Request::Flags	_flags = `0`
	)

Definition at line 57 of file translating_port_proxy.cc.

Member Function Documentation

◆ fixupAddr()

virtual bool gem5::TranslatingPortProxy::fixupAddr	(	Addr	addr,
		BaseMMU::Mode	mode
	)		const

inlineprotectedvirtual

Reimplemented in gem5::SETranslatingPortProxy.

Definition at line 71 of file translating_port_proxy.hh.

Referenced by tryTLBs().

◆ tryMemsetBlob()

bool gem5::TranslatingPortProxy::tryMemsetBlob	(	Addr	address,
		uint8_t	v,
		int	size
	)		const

overridevirtual

Fill size bytes starting at addr with byte value val.

Reimplemented from gem5::PortProxy.

Definition at line 124 of file translating_port_proxy.cc.

References _tc, gem5::ThreadContext::contextId(), gem5::ChunkGenerator::done(), flags, gem5::Request::funcRequestorId, gem5::PortProxy::memsetBlobPhys(), pageBytes, tryTLBs(), gem5::ArmISA::v, and gem5::BaseMMU::Write.

◆ tryReadBlob()

bool gem5::TranslatingPortProxy::tryReadBlob	(	Addr	addr,
		void *	p,
		int	size
	)		const

overridevirtual

Version of tryReadblob that translates virt->phys and deals with page boundries.

Reimplemented from gem5::PortProxy.

Definition at line 82 of file translating_port_proxy.cc.

References _tc, gem5::X86ISA::addr, gem5::ThreadContext::contextId(), gem5::ChunkGenerator::done(), flags, gem5::Request::funcRequestorId, gem5::MipsISA::p, pageBytes, gem5::BaseMMU::Read, gem5::PortProxy::readBlobPhys(), and tryTLBs().

◆ tryTLBs()

bool gem5::TranslatingPortProxy::tryTLBs	(	RequestPtr	req,
		BaseMMU::Mode	mode
	)		const

private

Definition at line 73 of file translating_port_proxy.cc.

References fixupAddr(), gem5::ArmISA::mode, and tryTLBsOnce().

Referenced by tryMemsetBlob(), tryReadBlob(), and tryWriteBlob().

◆ tryTLBsOnce()

bool gem5::TranslatingPortProxy::tryTLBsOnce	(	RequestPtr	req,
		BaseMMU::Mode	mode
	)		const

private

Definition at line 65 of file translating_port_proxy.cc.

References _tc, gem5::BaseMMU::Execute, gem5::ThreadContext::getMMUPtr(), gem5::ArmISA::mode, gem5::NoFault, and gem5::BaseMMU::translateFunctional().

Referenced by tryTLBs().

◆ tryWriteBlob()

bool gem5::TranslatingPortProxy::tryWriteBlob	(	Addr	addr,
		const void *	p,
		int	size
	)		const

overridevirtual

Version of tryWriteBlob that translates virt->phys and deals with page boundries.

Reimplemented from gem5::PortProxy.

Definition at line 103 of file translating_port_proxy.cc.

References _tc, gem5::X86ISA::addr, gem5::ThreadContext::contextId(), gem5::ChunkGenerator::done(), flags, gem5::Request::funcRequestorId, gem5::MipsISA::p, pageBytes, tryTLBs(), gem5::BaseMMU::Write, and gem5::PortProxy::writeBlobPhys().

Member Data Documentation

◆ _tc

ThreadContext* gem5::TranslatingPortProxy::_tc

protected

Definition at line 65 of file translating_port_proxy.hh.

Referenced by gem5::SETranslatingPortProxy::fixupAddr(), tryMemsetBlob(), tryReadBlob(), tryTLBsOnce(), and tryWriteBlob().

◆ flags

Request::Flags gem5::TranslatingPortProxy::flags

protected

Definition at line 68 of file translating_port_proxy.hh.

Referenced by tryMemsetBlob(), tryReadBlob(), and tryWriteBlob().

◆ pageBytes

const Addr gem5::TranslatingPortProxy::pageBytes

protected

Definition at line 66 of file translating_port_proxy.hh.

Referenced by gem5::SETranslatingPortProxy::fixupAddr(), tryMemsetBlob(), tryReadBlob(), and tryWriteBlob().

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

mem/translating_port_proxy.hh
mem/translating_port_proxy.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TranslatingPortProxy()

Member Function Documentation

◆ fixupAddr()

◆ tryMemsetBlob()

◆ tryReadBlob()

◆ tryTLBs()

◆ tryTLBsOnce()

◆ tryWriteBlob()

Member Data Documentation

◆ _tc

◆ flags

◆ pageBytes