gem5  v21.1.0.2
Public Member Functions | Public Attributes | List of all members
gem5::ArmISA::TableWalker::L2Descriptor Class Reference

Level 2 page table descriptor. More...

#include <table_walker.hh>

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

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...
 
L1Descriptorl1Parent
 
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

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

◆ 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

◆ 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

◆ 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:

Generated on Tue Sep 21 2021 12:28:42 for gem5 by doxygen 1.8.17