Class representing LAT table entry. More...

#include <md_vm.h>

Public Member Functions
	LatEntry (vaddr_t va, void *table, u32 tableLvl=0)
	Create entry by a table and virtual address.
	LatEntry (void *entry, u32 tableLvl=0)
	Create entry by direct pointer.
void	Set (vaddr_t va, void *table, u32 tableLvl=0)
	Set entry by a table and virtual address.
void	Set (void *entry, u32 tableLvl=0)
	Set entry by direct pointer.
bool	IsAccessed ()
	Check if the page mapped by the entry was accessed since last flag reset.
bool	SetAccessed (bool flag=true)
	Set or clear accessed flag for an entry.
bool	IsDirty ()
	Check if the page mapped by the entry was modified since last flag reset.
bool	SetDirty (bool flag=true)
	Set or clear dirty flag for an entry.
bool	CheckFlag (LatEntryFlags flag)
	Check specified flag inLatEntryentry.
bool	SetFlag (LatEntryFlags flag, bool setIt=true)
	Set or clear specified flag inLatEntryentry.
long	SetFlags (long flags)
	SetLatEntryentry flags.
paddr_t	GetAddress ()
	Get physical address pointed by the entry.
paddr_t	SetAddress (paddr_t pa)
	Set physical address pointed by the entry.
void	Clear ()
	Clear mapping provided by the entry.
	operator paddr_t ()
	Cast entry to physical address.
LatEntry &	operator= (paddr_t pa)
	Set physical address pointed by the entry.
	operator void * ()
	Cast entry to pointer.
ProcCtxId	GetProcCtxId ()
	Get process context identifier.
ProcCtxId	SetProcCtxId (ProcCtxId pcid)
	Set process context identifier.
void	Activate ()
	Switches current address space to the specified root.

Detailed Description

Class representing LAT table entry.

Constructor & Destructor Documentation

vm::LatEntry::LatEntry	(	vaddr_t	va,
		void *	table,
		u32	tableLvl = `0`
	)		`[inline]`

Create entry by a table and virtual address.

The entry in the table selected accordingly to virtual address provided.

Parameters:

va	Virtual address.
table	Pointer to the table.
tableLvl	Null-based table level starting from least significant (e.g. page table, page directory, ...).

vm::LatEntry::LatEntry	(	void *	entry,
		u32	tableLvl = `0`
	)		`[inline]`

Create entry by direct pointer.

Parameters:

entry	Pointer to the entry.
tableLvl	Level of the table which contains the entry.

Member Function Documentation

void vm::LatEntry::Activate ( ) [inline]

Switches current address space to the specified root.

Entry must be new address space root entry.

bool vm::LatEntry::CheckFlag ( LatEntryFlags flag ) [inline]

Check specified flag inLatEntryentry.

Parameters:

flag	Flag to check.

Returns:: Specified flag value.

void vm::LatEntry::Clear ( ) [inline]

Clear mapping provided by the entry.

paddr_t vm::LatEntry::GetAddress ( ) [inline]

Get physical address pointed by the entry.

ProcCtxId vm::LatEntry::GetProcCtxId ( ) [inline]

Get process context identifier.

Not all architectures support this parameter. Zero returned on unsupported architectures. The entry must beLatEntrytables root entry.

Returns:: Process context identifier associated with the given root entry.

bool vm::LatEntry::IsAccessed ( ) [inline]

Check if the page mapped by the entry was accessed since last flag reset.

Returns:: true if the page was accessed.

bool vm::LatEntry::IsDirty ( ) [inline]

Check if the page mapped by the entry was modified since last flag reset.

Returns:: true if the page was modified.

vm::LatEntry::operator paddr_t ( ) [inline]

Cast entry to physical address.

The same effect as from GetAddress.

Returns:: Physical address pointed by the entry.

vm::LatEntry::operator void * ( ) [inline]

Cast entry to pointer.

Returns:: Pointer to the entry in a table.

LatEntry& vm::LatEntry::operator= ( paddr_t pa ) [inline]

Set physical address pointed by the entry.

The same effect as from SetAddress.

Parameters:

pa	Physical address to set.

Returns:: Reference to itself.

void vm::LatEntry::Set	(	void *	entry,
		u32	tableLvl = `0`
	)		`[inline]`

Set entry by direct pointer.

Parameters:

entry	Pointer to the entry.
tableLvl	Level of the table which contains the entry.

void vm::LatEntry::Set	(	vaddr_t	va,
		void *	table,
		u32	tableLvl = `0`
	)		`[inline]`

Set entry by a table and virtual address.

The entry in the table selected accordingly to virtual address provided.

Parameters:

va	Virtual address.
table	Pointer to the table.
tableLvl	Null-based table level starting from least significant (e.g. page table, page directory, ...).

bool vm::LatEntry::SetAccessed ( bool flag = true ) [inline]

Set or clear accessed flag for an entry.

Parameters:

flag	Value to set in the flag.

Returns:: Previous value of the flag.

paddr_t vm::LatEntry::SetAddress ( paddr_t pa ) [inline]

Set physical address pointed by the entry.

Parameters:

pa	Physical address to set.

Returns:: Previous value of physical address in the entry.

bool vm::LatEntry::SetDirty ( bool flag = true ) [inline]

Set or clear dirty flag for an entry.

Parameters:

flag	Value to set in the flag.

Returns:: Previous value of the flag.

bool vm::LatEntry::SetFlag	(	LatEntryFlags	flag,
		bool	setIt = `true`
	)		`[inline]`

Set or clear specified flag inLatEntryentry.

Parameters:

flag	Flag to set or clear. Corresponding machine-dependent flag will be affected.
setIt	Set the flag if true, clear otherwise.

Returns:: Previous flag state.

long vm::LatEntry::SetFlags ( long flags ) [inline]

SetLatEntryentry flags.

Parameters:

flags Flags which must be set. Any number of flags defined by LatEntryFlags can be specified. Corresponding machine-dependent flags will be set, flags which were not specified will be cleared.

Returns:: Previous combination of the flags.

ProcCtxId vm::LatEntry::SetProcCtxId ( ProcCtxId pcid ) [inline]

Set process context identifier.

Not all architectures support this parameter. The value is ignored on unsupported architectures. The entry must beLatEntrytables root entry.

Returns:: Process context identifier associated with the given root entry.

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

kernel/sys/arch/x86_64/md_vm.h

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation