Level 2 page table descriptor. More...

#include <table_walker.hh>

Inheritance diagram for gem5::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 gem5::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 gem5::ArmISA::TableWalker::DescriptorBase
LookupLevel	lookupLevel
	Current lookup level for this descriptor. More...

Detailed Description

Level 2 page table descriptor.

Definition at line 251 of file table_walker.hh.

Constructor & Destructor Documentation

◆ L2Descriptor() [1/2]

gem5::ArmISA::TableWalker::L2Descriptor::L2Descriptor ( )

inline

Default ctor.

Definition at line 263 of file table_walker.hh.

References gem5::ArmISA::L2, and gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel.

◆ L2Descriptor() [2/2]

gem5::ArmISA::TableWalker::L2Descriptor::L2Descriptor ( L1Descriptor & parent )

inline

Definition at line 268 of file table_walker.hh.

References gem5::ArmISA::L2, and gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel.

Member Function Documentation

◆ ap()

uint8_t gem5::ArmISA::TableWalker::L2Descriptor::ap ( ) const

inlinevirtual

Three bit access protection flags.

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 324 of file table_walker.hh.

References gem5::bits(), and data.

Referenced by gem5::ArmISA::TableWalker::doL2Descriptor().

◆ dbgHeader()

virtual std::string gem5::ArmISA::TableWalker::L2Descriptor::dbgHeader ( ) const

inlinevirtual

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 279 of file table_walker.hh.

◆ dirty()

bool gem5::ArmISA::TableWalker::L2Descriptor::dirty ( ) const

inline

This entry needs to be written back to memory.

Definition at line 368 of file table_walker.hh.

References _dirty.

◆ domain()

virtual TlbEntry::DomainType gem5::ArmISA::TableWalker::L2Descriptor::domain ( ) const

inlinevirtual

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 284 of file table_walker.hh.

References gem5::ArmISA::TableWalker::L1Descriptor::domain(), and l1Parent.

◆ getRawData()

virtual uint64_t gem5::ArmISA::TableWalker::L2Descriptor::getRawData ( ) const

inlinevirtual

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 274 of file table_walker.hh.

References data.

◆ global()

bool gem5::ArmISA::TableWalker::L2Descriptor::global ( WalkerState * currState ) const

inlinevirtual

Is the translation global (no asid used)?

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 318 of file table_walker.hh.

References gem5::bits(), and data.

◆ invalid()

bool gem5::ArmISA::TableWalker::L2Descriptor::invalid ( ) const

inline

Is the entry invalid.

Definition at line 300 of file table_walker.hh.

References gem5::bits(), and data.

Referenced by gem5::ArmISA::TableWalker::doL2Descriptor().

◆ large()

bool gem5::ArmISA::TableWalker::L2Descriptor::large ( ) const

inline

What is the size of the mapping?

Definition at line 306 of file table_walker.hh.

References gem5::bits(), and data.

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

◆ offsetBits()

virtual uint8_t gem5::ArmISA::TableWalker::L2Descriptor::offsetBits ( ) const

inlinevirtual

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 294 of file table_walker.hh.

References large().

◆ paddr()

Addr gem5::ArmISA::TableWalker::L2Descriptor::paddr ( Addr va ) const

inline

Return complete physical address given a VA.

Definition at line 344 of file table_walker.hh.

References data, large(), gem5::mbits(), and gem5::ArmISA::va.

◆ pfn()

Addr gem5::ArmISA::TableWalker::L2Descriptor::pfn ( ) const

inlinevirtual

Return the physical frame, bits shifted right.

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 338 of file table_walker.hh.

References gem5::bits(), data, and large().

◆ secure()

bool gem5::ArmISA::TableWalker::L2Descriptor::secure	(	bool	have_security,
		WalkerState *	currState
	)		const

inlinevirtual

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 289 of file table_walker.hh.

References gem5::ArmISA::TableWalker::currState, l1Parent, and gem5::ArmISA::TableWalker::L1Descriptor::secure().

◆ setAp0()

void gem5::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 361 of file table_walker.hh.

References _dirty, and data.

◆ shareable()

bool gem5::ArmISA::TableWalker::L2Descriptor::shareable ( ) const

inlinevirtual

If the section is shareable.

See texcb() comment.

Reimplemented from gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 353 of file table_walker.hh.

References gem5::bits(), and data.

◆ texcb()

uint8_t gem5::ArmISA::TableWalker::L2Descriptor::texcb ( ) const

inlinevirtual

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

Reimplemented from gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 330 of file table_walker.hh.

References gem5::bits(), data, and large().

◆ xn()

bool gem5::ArmISA::TableWalker::L2Descriptor::xn ( ) const

inlinevirtual

Is execution allowed on this mapping?

Implements gem5::ArmISA::TableWalker::DescriptorBase.

Definition at line 312 of file table_walker.hh.

References gem5::bits(), data, and large().

Member Data Documentation

◆ _dirty

bool gem5::ArmISA::TableWalker::L2Descriptor::_dirty

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

Definition at line 260 of file table_walker.hh.

Referenced by dirty(), and setAp0().

◆ data

uint32_t gem5::ArmISA::TableWalker::L2Descriptor::data

The raw bits of the entry.

Definition at line 255 of file table_walker.hh.

Referenced by ap(), gem5::ArmISA::TableWalker::doL1Descriptor(), gem5::ArmISA::TableWalker::doL2Descriptor(), getRawData(), global(), invalid(), large(), paddr(), pfn(), setAp0(), shareable(), texcb(), and xn().

◆ l1Parent

L1Descriptor* gem5::ArmISA::TableWalker::L2Descriptor::l1Parent

Definition at line 256 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