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, uint64_t size) const override
	Version of tryReadblob that translates virt->phys and deals with page boundries.

bool	tryWriteBlob (Addr addr, const void *p, uint64_t size) const override
	Version of tryWriteBlob that translates virt->phys and deals with page boundries.

bool	tryMemsetBlob (Addr address, uint8_t v, uint64_t size) const override
	Fill size bytes starting at addr with byte value val.

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

	PortProxy (ThreadContext *tc, Addr cache_line_size)

	PortProxy (const RequestPort &port, Addr cache_line_size)

virtual	~PortProxy ()

void	readBlobPhys (Addr addr, Request::Flags flags, void *p, uint64_t size) const
	Fixed functionality for use in base classes.

void	writeBlobPhys (Addr addr, Request::Flags flags, const void *p, uint64_t size) const
	Write size bytes from p to physical address.

void	memsetBlobPhys (Addr addr, Request::Flags flags, uint8_t v, uint64_t size) const
	Fill size bytes starting at physical addr with byte value val.

void	readBlob (Addr addr, void *p, uint64_t size) const
	Higher level interfaces based on the above.

void	writeBlob (Addr addr, const void *p, uint64_t size) const
	Same as tryWriteBlob, but insists on success.

void	memsetBlob (Addr addr, uint8_t v, uint64_t size) const
	Same as tryMemsetBlob, but insists on success.

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

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

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

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

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

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

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

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

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.

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

Protected Member Functions
virtual bool	fixupRange (const TranslationGen::Range &range, BaseMMU::Mode mode) const

bool	tryOnBlob (BaseMMU::Mode mode, TranslationGenPtr gen, std::function< void(const TranslationGen::Range &)> func) const

Protected Attributes
ThreadContext *	_tc

Request::Flags	flags

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 60 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

◆ fixupRange()

virtual bool gem5::TranslatingPortProxy::fixupRange	(	const TranslationGen::Range &	range,
		BaseMMU::Mode	mode ) const

inlineprotectedvirtual

Reimplemented in gem5::SETranslatingPortProxy.

Definition at line 67 of file translating_port_proxy.hh.

Referenced by tryOnBlob().

◆ tryMemsetBlob()

bool gem5::TranslatingPortProxy::tryMemsetBlob	(	Addr	address,
		uint8_t	v,
		uint64_t	size ) const

overridevirtual

Fill size bytes starting at addr with byte value val.

Reimplemented from gem5::PortProxy.

Definition at line 114 of file translating_port_proxy.cc.

References _tc, gem5::X86ISA::addr, flags, gem5::ThreadContext::getMMUPtr(), gem5::ArmISA::mode, gem5::BaseMMU::translateFunctional(), tryOnBlob(), gem5::ArmISA::v, and gem5::BaseMMU::Write.

◆ tryOnBlob()

bool gem5::TranslatingPortProxy::tryOnBlob	(	BaseMMU::Mode	mode,
		TranslationGenPtr	gen,
		std::function< void(const TranslationGen::Range &)>	func ) const