ArmISA::TableWalker::L2Descriptor Class Reference

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 246 of file table_walker.hh.

Constructor & Destructor Documentation

L2Descriptor() [1/2]

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

inline

Default ctor.

Definition at line 257 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 262 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 318 of file table_walker.hh.

References bits().

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

dbgHeader()

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 273 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 362 of file table_walker.hh.

domain()

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 278 of file table_walker.hh.

References ArmISA::TableWalker::L1Descriptor::domain().

getRawData()

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 268 of file table_walker.hh.

global()

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

inlinevirtual

Is the translation global (no asid used)?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 312 of file table_walker.hh.

References bits().

invalid()

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

inline

Is the entry invalid.

Definition at line 294 of file table_walker.hh.

References bits().

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

large()

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

inline

What is the size of the mapping?

Definition at line 300 of file table_walker.hh.

References bits().

offsetBits()

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 288 of file table_walker.hh.

paddr()

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

inline

Return complete physical address given a VA.

Definition at line 338 of file table_walker.hh.

References mbits().

pfn()

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

inlinevirtual

Return the physical frame, bits shifted right.

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 332 of file table_walker.hh.

References bits().

secure()

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 283 of file table_walker.hh.

References 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 355 of file table_walker.hh.

shareable()

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

inlinevirtual

If the section is shareable.

See texcb() comment.

Reimplemented from ArmISA::TableWalker::DescriptorBase.

Definition at line 347 of file table_walker.hh.

References bits().

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 324 of file table_walker.hh.

References bits().

xn()

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

inlinevirtual

Is execution allowed on this mapping?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 306 of file table_walker.hh.

References bits().

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 254 of file table_walker.hh.

data

uint32_t ArmISA::TableWalker::L2Descriptor::data

The raw bits of the entry.

Definition at line 249 of file table_walker.hh.

Referenced by ArmISA::TableWalker::doL1Descriptor(), and ArmISA::TableWalker::doL2Descriptor().

l1Parent

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

Definition at line 250 of file table_walker.hh.

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

• arch/arm/table_walker.hh