Level 2 page table descriptor. More...

#include <table_walker.hh>

Inheritance diagram for gem5::ArmISA::TableWalker::L2Descriptor:

Public Member Functions
	L2Descriptor ()
	Default ctor.

	L2Descriptor (L1Descriptor &parent)

uint8_t *	getRawPtr () override

uint64_t	getRawData () const override

std::string	dbgHeader () const override

DomainType	domain () const override

bool	secure (bool have_security, WalkerState *currState) const override

uint8_t	offsetBits () const override

bool	invalid () const
	Is the entry invalid.

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

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

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

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

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

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

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

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

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

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

Public Member Functions inherited from gem5::ArmISA::TableWalker::DescriptorBase
	DescriptorBase ()

Public Attributes
uint32_t	data
	The raw bits of the entry.

L1Descriptor *	l1Parent

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

Public Attributes inherited from gem5::ArmISA::TableWalker::DescriptorBase
LookupLevel	lookupLevel
	Current lookup level for this descriptor.

Detailed Description

Level 2 page table descriptor.

Definition at line 278 of file table_walker.hh.

Constructor & Destructor Documentation

◆ L2Descriptor() [1/2]

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

inline

Default ctor.

Definition at line 290 of file table_walker.hh.

References _dirty, data, l1Parent, and gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel.

◆ L2Descriptor() [2/2]

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

inline

Definition at line 295 of file table_walker.hh.

References _dirty, data, l1Parent, and gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel.

Member Function Documentation

◆ ap()

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

inlineoverridevirtual

Three bit access protection flags.

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

Definition at line 367 of file table_walker.hh.

References gem5::bits(), and data.

◆ dbgHeader()

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

inlineoverridevirtual

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

Definition at line 314 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 417 of file table_walker.hh.

References _dirty.

◆ domain()

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

inlineoverridevirtual

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

Definition at line 320 of file table_walker.hh.

References l1Parent.

◆ getRawData()

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

inlineoverridevirtual

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

Definition at line 308 of file table_walker.hh.

References data.

◆ getRawPtr()

uint8_t * gem5::ArmISA::TableWalker::L2Descriptor::getRawPtr ( )

inlineoverridevirtual

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

Definition at line 302 of file table_walker.hh.

References data.

◆ global()

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

inlineoverridevirtual

Is the translation global (no asid used)?

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

Definition at line 360 of file table_walker.hh.

References gem5::bits(), gem5::ArmISA::TableWalker::currState, and data.

◆ invalid()

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

inline

Is the entry invalid.

Definition at line 339 of file table_walker.hh.

References gem5::bits(), and data.

◆ large()

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

inline

What is the size of the mapping?

Definition at line 346 of file table_walker.hh.

References gem5::bits(), and data.

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

◆ offsetBits()

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

inlineoverridevirtual

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

Definition at line 332 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 390 of file table_walker.hh.

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

◆ pfn()

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

inlineoverridevirtual

Return the physical frame, bits shifted right.

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

Definition at line 383 of file table_walker.hh.

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

◆ secure()

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

inlineoverridevirtual

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

Definition at line 326 of file table_walker.hh.

References gem5::ArmISA::TableWalker::currState, and l1Parent.

◆ 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 409 of file table_walker.hh.

References _dirty, and data.

◆ shareable()

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

inlineoverridevirtual

If the section is shareable.

See texcb() comment.

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

Definition at line 400 of file table_walker.hh.

References gem5::bits(), and data.

◆ texcb()

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

inlineoverridevirtual

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

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

Definition at line 374 of file table_walker.hh.

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

◆ xn()

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

inlineoverridevirtual

Is execution allowed on this mapping?

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

Definition at line 353 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 287 of file table_walker.hh.

Referenced by dirty(), L2Descriptor(), L2Descriptor(), and setAp0().

◆ data

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

The raw bits of the entry.

Definition at line 282 of file table_walker.hh.

Referenced by ap(), getRawData(), getRawPtr(), global(), invalid(), L2Descriptor(), L2Descriptor(), large(), paddr(), pfn(), setAp0(), shareable(), texcb(), and xn().

◆ l1Parent

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

Definition at line 283 of file table_walker.hh.

Referenced by domain(), L2Descriptor(), L2Descriptor(), 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()

◆ getRawPtr()

◆ global()

◆ invalid()

◆ large()

◆ offsetBits()

◆ paddr()

◆ pfn()

◆ secure()

◆ setAp0()

◆ shareable()

◆ texcb()

◆ xn()

Member Data Documentation

◆ _dirty

◆ data

◆ l1Parent