#include <table_walker.hh>

Inheritance diagram for gem5::ArmISA::TableWalker::L1Descriptor:

Public Types
enum	EntryType { Ignore, PageTable, Section, Reserved }
	Type of page table entry ARM DDI 0406B: B3-8. More...

Public Member Functions
	L1Descriptor ()
	Default ctor. More...

virtual uint64_t	getRawData () const

virtual std::string	dbgHeader () const

virtual uint8_t	offsetBits () const

EntryType	type () const

bool	supersection () const
	Is the page a Supersection (16 MiB)? More...

Addr	paddr () const
	Return the physcal address of the entry, bits in position. More...

Addr	paddr (Addr va) const
	Return the physcal address of the entry, bits in position. More...

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

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

bool	xn () const
	Is the translation not allow execution? More...

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

TlbEntry::DomainType	domain () const
	Domain Client/Manager: ARM DDI 0406B: B3-31. More...

Addr	l2Addr () const
	Address of L2 descriptor if it exists. More...

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

bool	secure (bool have_security, WalkerState *currState) const
	Returns true if this entry targets the secure physical address map. More...

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

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

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

Definition at line 98 of file table_walker.hh.

Member Enumeration Documentation

◆ EntryType

enum gem5::ArmISA::TableWalker::L1Descriptor::EntryType

Type of page table entry ARM DDI 0406B: B3-8.

Enumerator
Ignore
PageTable
Section
Reserved

Definition at line 102 of file table_walker.hh.

Constructor & Destructor Documentation

◆ L1Descriptor()

gem5::ArmISA::TableWalker::L1Descriptor::L1Descriptor ( )

inline

Default ctor.

Definition at line 118 of file table_walker.hh.

References gem5::ArmISA::L1, and gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel.

Member Function Documentation

◆ ap()

uint8_t gem5::ArmISA::TableWalker::L1Descriptor::ap ( ) const

inlinevirtual

Three bit access protection flags.

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

Definition at line 186 of file table_walker.hh.

References gem5::bits(), and data.

Referenced by gem5::ArmISA::TableWalker::doL1Descriptor().

◆ dbgHeader()

virtual std::string gem5::ArmISA::TableWalker::L1Descriptor::dbgHeader ( ) const

inlinevirtual

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

Definition at line 128 of file table_walker.hh.

◆ dirty()

bool gem5::ArmISA::TableWalker::L1Descriptor::dirty ( ) const

inline

This entry needs to be written back to memory.

Definition at line 229 of file table_walker.hh.

References _dirty.

◆ domain()

TlbEntry::DomainType gem5::ArmISA::TableWalker::L1Descriptor::domain ( ) const

inlinevirtual

Domain Client/Manager: ARM DDI 0406B: B3-31.

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

Definition at line 192 of file table_walker.hh.

References gem5::bits(), and data.

Referenced by gem5::ArmISA::TableWalker::doL1Descriptor(), gem5::ArmISA::TableWalker::doL2Descriptor(), and gem5::ArmISA::TableWalker::L2Descriptor::domain().

◆ getRawData()

virtual uint64_t gem5::ArmISA::TableWalker::L1Descriptor::getRawData ( ) const

inlinevirtual

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

Definition at line 123 of file table_walker.hh.

References data.

◆ global()

bool gem5::ArmISA::TableWalker::L1Descriptor::global ( WalkerState * currState ) const

inlinevirtual

Is the translation global (no asid used)?

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

Definition at line 174 of file table_walker.hh.

References gem5::bits(), and data.

◆ l2Addr()

Addr gem5::ArmISA::TableWalker::L1Descriptor::l2Addr ( ) const

inline

Address of L2 descriptor if it exists.

Definition at line 198 of file table_walker.hh.

References data, and gem5::mbits().

Referenced by gem5::ArmISA::TableWalker::doL1Descriptor().

◆ offsetBits()

virtual uint8_t gem5::ArmISA::TableWalker::L1Descriptor::offsetBits ( ) const

inlinevirtual

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

Definition at line 133 of file table_walker.hh.

◆ paddr() [1/2]

Addr gem5::ArmISA::TableWalker::L1Descriptor::paddr ( ) const

inline

Return the physcal address of the entry, bits in position.

Definition at line 150 of file table_walker.hh.

References data, gem5::mbits(), panic, and supersection().

◆ paddr() [2/2]

Addr gem5::ArmISA::TableWalker::L1Descriptor::paddr ( Addr va ) const

inline

Return the physcal address of the entry, bits in position.

Definition at line 157 of file table_walker.hh.

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

◆ pfn()

Addr gem5::ArmISA::TableWalker::L1Descriptor::pfn ( ) const

inlinevirtual

Return the physical frame, bits shifted right.

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

Definition at line 166 of file table_walker.hh.

References gem5::bits(), data, panic, and supersection().

◆ secure()

bool gem5::ArmISA::TableWalker::L1Descriptor::secure	(	bool	have_security,
		WalkerState *	currState
	)		const

inlinevirtual

Returns true if this entry targets the secure physical address map.

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

Definition at line 238 of file table_walker.hh.

References gem5::bits(), gem5::ArmISA::TableWalker::currState, data, PageTable, gem5::ArmISA::TableWalker::WalkerState::secureLookup, and type().

Referenced by gem5::ArmISA::TableWalker::L2Descriptor::secure().

◆ setAp0()

void gem5::ArmISA::TableWalker::L1Descriptor::setAp0 ( )

inline

Set access flag that this entry has been touched.

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

Definition at line 222 of file table_walker.hh.

References _dirty, and data.

◆ shareable()

bool gem5::ArmISA::TableWalker::L1Descriptor::shareable ( ) const

inlinevirtual

If the section is shareable.

See texcb() comment.

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

Definition at line 214 of file table_walker.hh.

References gem5::bits(), and data.

◆ supersection()

bool gem5::ArmISA::TableWalker::L1Descriptor::supersection ( ) const

inline

Is the page a Supersection (16 MiB)?

Definition at line 144 of file table_walker.hh.

References gem5::bits(), and data.

Referenced by gem5::ArmISA::TableWalker::doL1Descriptor(), paddr(), and pfn().

◆ texcb()

uint8_t gem5::ArmISA::TableWalker::L1Descriptor::texcb ( ) const

inlinevirtual

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

These bits are largly ignored by M5 and only used to provide the illusion that the memory system cares about anything but cachable vs. uncachable.

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

Definition at line 208 of file table_walker.hh.

References gem5::bits(), and data.

◆ type()

EntryType gem5::ArmISA::TableWalker::L1Descriptor::type ( ) const

inline

Definition at line 138 of file table_walker.hh.

References data.

Referenced by gem5::ArmISA::TableWalker::doL1Descriptor(), and secure().

◆ xn()

bool gem5::ArmISA::TableWalker::L1Descriptor::xn ( ) const

inlinevirtual

Is the translation not allow execution?

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

Definition at line 180 of file table_walker.hh.

References gem5::bits(), and data.

Member Data Documentation

◆ _dirty

bool gem5::ArmISA::TableWalker::L1Descriptor::_dirty

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

Definition at line 115 of file table_walker.hh.

Referenced by dirty(), and setAp0().

◆ data

uint32_t gem5::ArmISA::TableWalker::L1Descriptor::data

The raw bits of the entry.

Definition at line 111 of file table_walker.hh.

Referenced by ap(), gem5::ArmISA::TableWalker::doL1Descriptor(), gem5::ArmISA::TableWalker::doL1DescriptorWrapper(), domain(), getRawData(), global(), l2Addr(), paddr(), pfn(), gem5::ArmISA::TableWalker::processWalk(), secure(), setAp0(), shareable(), supersection(), texcb(), type(), and xn().

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

arch/arm/table_walker.hh

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

◆ EntryType

Constructor & Destructor Documentation

◆ L1Descriptor()

Member Function Documentation

◆ ap()

◆ dbgHeader()

◆ dirty()

◆ domain()

◆ getRawData()

◆ global()

◆ l2Addr()

◆ offsetBits()

◆ paddr() [1/2]

◆ paddr() [2/2]

◆ pfn()

◆ secure()

◆ setAp0()

◆ shareable()

◆ supersection()

◆ texcb()

◆ type()

◆ xn()

Member Data Documentation

◆ _dirty

◆ data