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 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 242 of file table_walker.hh.

Constructor & Destructor Documentation

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

inline

Default ctor.

Definition at line 253 of file table_walker.hh.

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

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

inline

Definition at line 258 of file table_walker.hh.

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

Member Function Documentation

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

inlinevirtual

Three bit access protection flags.

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 314 of file table_walker.hh.

References bits(), and data.

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

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 269 of file table_walker.hh.

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

inline

This entry needs to be written back to memory.

Definition at line 358 of file table_walker.hh.

References _dirty.

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 274 of file table_walker.hh.

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

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 264 of file table_walker.hh.

References data.

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

inlinevirtual

Is the translation global (no asid used)?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 308 of file table_walker.hh.

References bits(), and data.

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

inline

Is the entry invalid.

Definition at line 290 of file table_walker.hh.

References bits(), and data.

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

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

inline

What is the size of the mapping?

Definition at line 296 of file table_walker.hh.

References bits(), and data.

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

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 284 of file table_walker.hh.

References large().

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

inline

Return complete physical address given a VA.

Definition at line 334 of file table_walker.hh.

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

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

inlinevirtual

Return the physical frame, bits shifted right.

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 328 of file table_walker.hh.

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

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

inlinevirtual

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 279 of file table_walker.hh.

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

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 351 of file table_walker.hh.

References _dirty, and data.

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

inlinevirtual

If the section is shareable.

See texcb() comment.

Reimplemented from ArmISA::TableWalker::DescriptorBase.

Definition at line 343 of file table_walker.hh.

References bits(), and data.

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

inlinevirtual

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

Reimplemented from ArmISA::TableWalker::DescriptorBase.

Definition at line 320 of file table_walker.hh.

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

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

inlinevirtual

Is execution allowed on this mapping?

Implements ArmISA::TableWalker::DescriptorBase.

Definition at line 302 of file table_walker.hh.

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

Member Data Documentation

bool ArmISA::TableWalker::L2Descriptor::_dirty

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

Definition at line 250 of file table_walker.hh.

Referenced by dirty(), and setAp0().

uint32_t ArmISA::TableWalker::L2Descriptor::data

The raw bits of the entry.

Definition at line 245 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().

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

Definition at line 246 of file table_walker.hh.

Referenced by domain(), and secure().

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

• arch/arm/table_walker.hh