Level 2 page table descriptor. More...

#include <table_walker.hh>

Inheritance diagram for ArmISA::TableWalker::L2Descriptor:

Public Member Functions
	L2Descriptor ()
	Default ctor. More...

	L2Descriptor (L1Descriptor &parent)

virtual uint64_t	getRawData () const

virtual std::string	dbgHeader () const

virtual TlbEntry::DomainType	domain () const

bool	secure (bool have_security, WalkerState *currState) const

virtual uint8_t	offsetBits () const

bool	invalid () const
	Is the entry invalid. More...

bool	large () const
	What is the size of the mapping? More...

bool	xn () const
	Is execution allowed on this mapping? More...

bool	global (WalkerState *currState) const
	Is the translation global (no asid used)? More...

uint8_t	ap () const
	Three bit access protection flags. More...

uint8_t	texcb () const
	Memory region attributes: ARM DDI 0406B: B3-32. More...

Addr	pfn () const
	Return the physical frame, bits shifted right. More...

Addr	paddr (Addr va) const
	Return complete physical address given a VA. More...

bool	shareable () const
	If the section is shareable. More...

void	setAp0 ()
	Set access flag that this entry has been touched. More...

bool	dirty () const
	This entry needs to be written back to memory. More...

Public Member Functions inherited from ArmISA::TableWalker::DescriptorBase
	DescriptorBase ()

Public Attributes
uint32_t	data
	The raw bits of the entry. More...

L1Descriptor *	l1Parent

bool	_dirty
	This entry has been modified (access flag set) and needs to be written back to memory. More...

Public Attributes inherited from ArmISA::TableWalker::DescriptorBase
LookupLevel	lookupLevel
	Current lookup level for this descriptor. More...

Detailed Description

Level 2 page table descriptor.

Definition at line 243 of file table_walker.hh.

Constructor & Destructor Documentation

◆ L2Descriptor() [1/2]

ArmISA::TableWalker::L2Descriptor::L2Descriptor ( )

inline

Default ctor.

Definition at line 254 of file table_walker.hh.

References ArmISA::L2, and ArmISA::TableWalker::DescriptorBase::lookupLevel.

◆ L2Descriptor() [2/2]

ArmISA::TableWalker::L2Descriptor::L2Descriptor ( L1Descriptor & parent )

inline

Definition at line 259 of file table_walker.hh.

References ArmISA::L2, and ArmISA::TableWalker::DescriptorBase::lookupLevel.

Member Function Documentation

◆ ap()

uint8_t ArmISA::TableWalker::L2Descriptor::ap ( ) const

inlinevirtual

Three bit access protection flags.

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 315 of file table_walker.hh.

References bits(), and data.

Referenced by ArmISA::TableWalker::doL2Descriptor().

◆ dbgHeader()

virtual std::string ArmISA::TableWalker::L2Descriptor::dbgHeader ( ) const

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 270 of file table_walker.hh.

◆ dirty()

bool ArmISA::TableWalker::L2Descriptor::dirty ( ) const

inline

This entry needs to be written back to memory.

Definition at line 359 of file table_walker.hh.

References _dirty.

◆ domain()

virtual TlbEntry::DomainType ArmISA::TableWalker::L2Descriptor::domain ( ) const

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 275 of file table_walker.hh.

References ArmISA::TableWalker::L1Descriptor::domain(), and l1Parent.

◆ getRawData()

virtual uint64_t ArmISA::TableWalker::L2Descriptor::getRawData ( ) const

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 265 of file table_walker.hh.

References data.

◆ global()

bool ArmISA::TableWalker::L2Descriptor::global ( WalkerState * currState ) const

inlinevirtual

Is the translation global (no asid used)?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 309 of file table_walker.hh.

References bits(), and data.

◆ invalid()

bool ArmISA::TableWalker::L2Descriptor::invalid ( ) const

inline

Is the entry invalid.

Definition at line 291 of file table_walker.hh.

References bits(), and data.

Referenced by ArmISA::TableWalker::doL2Descriptor().

◆ large()

bool ArmISA::TableWalker::L2Descriptor::large ( ) const

inline

What is the size of the mapping?

Definition at line 297 of file table_walker.hh.

References bits(), and data.

Referenced by offsetBits(), paddr(), pfn(), texcb(), and xn().

◆ offsetBits()

virtual uint8_t ArmISA::TableWalker::L2Descriptor::offsetBits ( ) const

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 285 of file table_walker.hh.

References large().

◆ paddr()

Addr ArmISA::TableWalker::L2Descriptor::paddr ( Addr va ) const

inline

Return complete physical address given a VA.

Definition at line 335 of file table_walker.hh.

References data, large(), mbits(), and ArmISA::va.

◆ pfn()

Addr ArmISA::TableWalker::L2Descriptor::pfn ( ) const

inlinevirtual

Return the physical frame, bits shifted right.

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 329 of file table_walker.hh.

References bits(), data, and large().

◆ secure()

bool ArmISA::TableWalker::L2Descriptor::secure	(	bool	have_security,
		WalkerState *	currState
	)		const

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 280 of file table_walker.hh.

References ArmISA::TableWalker::currState, l1Parent, and ArmISA::TableWalker::L1Descriptor::secure().

◆ setAp0()

void ArmISA::TableWalker::L2Descriptor::setAp0 ( )

inline

Set access flag that this entry has been touched.

Mark the entry as requiring a writeback, in the future.

Definition at line 352 of file table_walker.hh.

References _dirty, and data.

◆ shareable()

bool ArmISA::TableWalker::L2Descriptor::shareable ( ) const

inlinevirtual

If the section is shareable.

See texcb() comment.

Reimplemented from ArmISA::TableWalker::DescriptorBase.

Definition at line 344 of file table_walker.hh.

References bits(), and data.

◆ texcb()

uint8_t ArmISA::TableWalker::L2Descriptor::texcb ( ) const

inlinevirtual

Memory region attributes: ARM DDI 0406B: B3-32.

Reimplemented from ArmISA::TableWalker::DescriptorBase.

Definition at line 321 of file table_walker.hh.

References bits(), data, and large().

◆ xn()

bool ArmISA::TableWalker::L2Descriptor::xn ( ) const

inlinevirtual

Is execution allowed on this mapping?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 303 of file table_walker.hh.

References bits(), data, and large().

Member Data Documentation

◆ _dirty

bool ArmISA::TableWalker::L2Descriptor::_dirty

This entry has been modified (access flag set) and needs to be written back to memory.

Definition at line 251 of file table_walker.hh.

Referenced by dirty(), and setAp0().

◆ data

uint32_t ArmISA::TableWalker::L2Descriptor::data

The raw bits of the entry.

Definition at line 246 of file table_walker.hh.

Referenced by ap(), ArmISA::TableWalker::doL1Descriptor(), ArmISA::TableWalker::doL2Descriptor(), getRawData(), global(), invalid(), large(), paddr(), pfn(), setAp0(), shareable(), texcb(), and xn().

◆ l1Parent

L1Descriptor* ArmISA::TableWalker::L2Descriptor::l1Parent

Definition at line 247 of file table_walker.hh.

Referenced by domain(), and secure().

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

arch/arm/table_walker.hh

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ L2Descriptor() [1/2]

◆ L2Descriptor() [2/2]

Member Function Documentation

◆ ap()

◆ dbgHeader()

◆ dirty()

◆ domain()

◆ getRawData()

◆ global()

◆ invalid()

◆ large()

◆ offsetBits()

◆ paddr()

◆ pfn()

◆ secure()

◆ setAp0()

◆ shareable()

◆ texcb()

◆ xn()

Member Data Documentation

◆ _dirty

◆ data

◆ l1Parent