This class captures the state of an address translation. More...

#include <translation.hh>

Public Member Functions
	WholeTranslationState (RequestPtr _req, uint8_t _data, uint64_t _res, BaseTLB::Mode _mode)
	Single translation state. More...

	WholeTranslationState (RequestPtr _req, RequestPtr _sreqLow, RequestPtr _sreqHigh, uint8_t _data, uint64_t _res, BaseTLB::Mode _mode)
	Split translation state. More...

bool	finish (const Fault &fault, int index)
	Finish part of a translation. More...

Fault	getFault () const
	Determine whether this translation produced a fault. More...

void	setNoFault ()
	Remove all faults from the translation. More...

bool	isStrictlyOrdered () const
	Check if this request is strictly ordered device access. More...

bool	isPrefetch () const
	Check if this request is a prefetch. More...

Addr	getPaddr () const
	Get the physical address of this request. More...

unsigned	getFlags ()
	Get the flags associated with this request. More...

void	deleteReqs ()
	Delete all requests that make up this translation. More...

Public Attributes
bool	delay

bool	isSplit

RequestPtr	mainReq

RequestPtr	sreqLow

RequestPtr	sreqHigh

uint8_t *	data

uint64_t *	res

BaseTLB::Mode	mode

Protected Attributes
int	outstanding

Fault	faults [2]

Detailed Description

This class captures the state of an address translation.

A translation can be split in two if the ISA supports it and the memory access crosses a page boundary. In this case, this class is shared by two data translations (below). Otherwise it is used by a single data translation class. When each part of the translation is finished, the finish function is called which will indicate whether the whole translation is completed or not. There are also functions for accessing parts of the translation state which deal with the possible split correctly.

Definition at line 61 of file translation.hh.

Constructor & Destructor Documentation

WholeTranslationState::WholeTranslationState	(	RequestPtr	_req,
		uint8_t *	_data,
		uint64_t *	_res,
		BaseTLB::Mode	_mode
	)

inline

Single translation state.

We set the number of outstanding translations to one and indicate that it is not split.

Definition at line 81 of file translation.hh.

References faults, mode, NoFault, BaseTLB::Read, and BaseTLB::Write.

WholeTranslationState::WholeTranslationState	(	RequestPtr	_req,
		RequestPtr	_sreqLow,
		RequestPtr	_sreqHigh,
		uint8_t *	_data,
		uint64_t *	_res,
		BaseTLB::Mode	_mode
	)

inline

Split translation state.

We copy all state into this class, set the number of outstanding translations to two and then mark this as a split translation.

Definition at line 95 of file translation.hh.

References faults, mode, NoFault, BaseTLB::Read, and BaseTLB::Write.

Member Function Documentation

void WholeTranslationState::deleteReqs ( )

inline

Delete all requests that make up this translation.

Definition at line 197 of file translation.hh.

References isSplit, mainReq, sreqHigh, and sreqLow.

Referenced by TimingSimpleCPU::finishTranslation(), and BaseDynInst< Impl >::finishTranslation().

bool WholeTranslationState::finish	(	const Fault &	fault,
		int	index
	)

inline

Finish part of a translation.

If there is only one request then this translation is completed. If the request has been split in two then the outstanding count determines whether the translation is complete. In this case, flags from the split request are copied to the main request to make it easier to access them later on.

Definition at line 114 of file translation.hh.

References faults, Request::getFlags(), Request::getPaddr(), MipsISA::index, isSplit, mainReq, NoFault, outstanding, Request::setFlags(), Request::setPaddr(), sreqHigh, and sreqLow.