gem5
v20.1.0.0
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#include <table_walker.hh>
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 (16MB)? 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 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 ArmISA::TableWalker::DescriptorBase | |
LookupLevel | lookupLevel |
Current lookup level for this descriptor. More... | |
Definition at line 92 of file table_walker.hh.
Type of page table entry ARM DDI 0406B: B3-8.
Enumerator | |
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Ignore | |
PageTable | |
Section | |
Reserved |
Definition at line 95 of file table_walker.hh.
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inline |
Default ctor.
Definition at line 110 of file table_walker.hh.
References ArmISA::L1, and ArmISA::TableWalker::DescriptorBase::lookupLevel.
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inlinevirtual |
Three bit access protection flags.
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 178 of file table_walker.hh.
Referenced by ArmISA::TableWalker::doL1Descriptor().
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inlinevirtual |
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 120 of file table_walker.hh.
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inline |
This entry needs to be written back to memory.
Definition at line 221 of file table_walker.hh.
References _dirty.
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inlinevirtual |
Domain Client/Manager: ARM DDI 0406B: B3-31.
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 184 of file table_walker.hh.
Referenced by ArmISA::TableWalker::doL1Descriptor(), ArmISA::TableWalker::doL2Descriptor(), and ArmISA::TableWalker::L2Descriptor::domain().
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inlinevirtual |
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 115 of file table_walker.hh.
References data.
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inlinevirtual |
Is the translation global (no asid used)?
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 166 of file table_walker.hh.
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inline |
Address of L2 descriptor if it exists.
Definition at line 190 of file table_walker.hh.
Referenced by ArmISA::TableWalker::doL1Descriptor().
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inlinevirtual |
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 125 of file table_walker.hh.
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inline |
Return the physcal address of the entry, bits in position.
Definition at line 142 of file table_walker.hh.
References data, mbits(), panic, and supersection().
Return the physcal address of the entry, bits in position.
Definition at line 149 of file table_walker.hh.
References data, mbits(), panic, supersection(), and ArmISA::va.
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inlinevirtual |
Return the physical frame, bits shifted right.
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 158 of file table_walker.hh.
References bits(), data, panic, and supersection().
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inlinevirtual |
Returns true if this entry targets the secure physical address map.
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 230 of file table_walker.hh.
References bits(), ArmISA::TableWalker::currState, data, PageTable, ArmISA::TableWalker::WalkerState::secureLookup, and type().
Referenced by ArmISA::TableWalker::L2Descriptor::secure().
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inline |
Set access flag that this entry has been touched.
Mark the entry as requiring a writeback, in the future.
Definition at line 214 of file table_walker.hh.
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inlinevirtual |
If the section is shareable.
See texcb() comment.
Reimplemented from ArmISA::TableWalker::DescriptorBase.
Definition at line 206 of file table_walker.hh.
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inline |
Is the page a Supersection (16MB)?
Definition at line 136 of file table_walker.hh.
Referenced by ArmISA::TableWalker::doL1Descriptor(), paddr(), and pfn().
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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 ArmISA::TableWalker::DescriptorBase.
Definition at line 200 of file table_walker.hh.
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inline |
Definition at line 130 of file table_walker.hh.
References data.
Referenced by ArmISA::TableWalker::doL1Descriptor(), and secure().
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inlinevirtual |
Is the translation not allow execution?
Implements ArmISA::TableWalker::DescriptorBase.
Definition at line 172 of file table_walker.hh.
bool ArmISA::TableWalker::L1Descriptor::_dirty |
This entry has been modified (access flag set) and needs to be written back to memory.
Definition at line 107 of file table_walker.hh.
uint32_t ArmISA::TableWalker::L1Descriptor::data |
The raw bits of the entry.
Definition at line 103 of file table_walker.hh.
Referenced by ap(), ArmISA::TableWalker::doL1Descriptor(), ArmISA::TableWalker::doL1DescriptorWrapper(), domain(), getRawData(), global(), l2Addr(), paddr(), pfn(), ArmISA::TableWalker::processWalk(), secure(), setAp0(), shareable(), supersection(), texcb(), type(), and xn().