#include <tlb.hh>

Inheritance diagram for X86ISA::TLB:

Classes
struct	TlbStats

Public Types
typedef X86TLBParams	Params

Public Types inherited from BaseTLB
enum	Mode { Read, Write, Execute }

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	TLB (const Params *p)

void	takeOverFrom (BaseTLB *otlb) override
	Take over from an old tlb context. More...

TlbEntry *	lookup (Addr va, bool update_lru=true)

void	setConfigAddress (uint32_t addr)

Walker *	getWalker ()

void	flushAll () override
	Remove all entries from the TLB. More...

void	flushNonGlobal ()

void	demapPage (Addr va, uint64_t asn) override

void	evictLRU ()

uint64_t	nextSeq ()

Fault	translateAtomic (const RequestPtr &req, ThreadContext *tc, Mode mode) override

Fault	translateFunctional (const RequestPtr &req, ThreadContext *tc, Mode mode) override

void	translateTiming (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode) override

Fault	finalizePhysical (const RequestPtr &req, ThreadContext *tc, Mode mode) const override
	Do post-translation physical address finalization. More...

TlbEntry *	insert (Addr vpn, const TlbEntry &entry)

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Port *	getTableWalkerPort () override
	Get the table walker port. More...

Public Member Functions inherited from BaseTLB
void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

Public Member Functions inherited from SimObject
const Params *	params () const

	SimObject (const Params *_params)

virtual	~SimObject ()

virtual const std::string	name () const

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Public Member Functions inherited from EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue. More...

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from Stats::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters. More...

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (Stats::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Protected Types
typedef std::list< TlbEntry * >	EntryList

Protected Member Functions
EntryList::iterator	lookupIt (Addr va, bool update_lru=true)

Fault	translateInt (bool read, RequestPtr req, ThreadContext *tc)

Fault	translate (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode, bool &delayedResponse, bool timing)

Protected Member Functions inherited from BaseTLB
	BaseTLB (const Params *p)

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Attributes
uint32_t	configAddress

Walker *	walker

uint32_t	size

std::vector< TlbEntry >	tlb

EntryList	freeList

TlbEntryTrie	trie

uint64_t	lruSeq

AddrRange	m5opRange

X86ISA::TLB::TlbStats	stats

Protected Attributes inherited from SimObject
const SimObjectParams *	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Friends
class	Walker

Additional Inherited Members
Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)
	Serializes all the SimObjects. More...

static void	unserializeGlobals (CheckpointIn &cp)

Detailed Description

Definition at line 57 of file tlb.hh.

Member Typedef Documentation

◆ EntryList

typedef std::list<TlbEntry *> X86ISA::TLB::EntryList

protected

Definition at line 62 of file tlb.hh.

◆ Params

typedef X86TLBParams X86ISA::TLB::Params

Definition at line 68 of file tlb.hh.

Constructor & Destructor Documentation

◆ TLB()

X86ISA::TLB::TLB ( const Params * p )

Definition at line 62 of file tlb.cc.

References fatal, freeList, X86ISA::p, X86ISA::Walker::setTLB(), size, tlb, walker, and X86ISA::x.

Member Function Documentation

◆ demapPage()

void X86ISA::TLB::demapPage	(	Addr	va,
		uint64_t	asn
	)

overridevirtual

Implements BaseTLB.

Definition at line 162 of file tlb.cc.

References freeList, Trie< Key, Value >::lookup(), Trie< Key, Value >::remove(), trie, X86ISA::TlbEntry::trieHandle, and ArmISA::va.

◆ evictLRU()

void X86ISA::TLB::evictLRU ( )

Definition at line 79 of file tlb.cc.

References freeList, ArmISA::i, lruSeq, Trie< Key, Value >::remove(), size, tlb, and trie.

Referenced by insert().

◆ finalizePhysical()

Fault X86ISA::TLB::finalizePhysical	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode
	)		const

overridevirtual

Do post-translation physical address finalization.

Some addresses, for example requests going to the APIC, need post-translation updates. Such physical addresses are remapped into a "magic" part of the physical address space by this method.

Parameters

req	Request to updated in-place.
tc	Thread context that created the request.
mode	Request type (read/write/execute).

Returns: A fault on failure, NoFault otherwise.

Implements BaseTLB.

Definition at line 258 of file tlb.cc.

References AddrRange::contains(), ThreadContext::contextId(), PseudoInst::decodeAddrOffset(), FullSystem, m5opRange, X86ISA::MISCREG_APIC_BASE, ArmISA::mode, NoFault, X86ISA::PageBytes, BaseTLB::Read, ThreadContext::readMiscRegNoEffect(), Packet::setLE(), AddrRange::start(), Request::STRICT_ORDER, Request::UNCACHEABLE, and X86ISA::x86LocalAPICAddress().

Referenced by translate().

◆ flushAll()

void X86ISA::TLB::flushAll ( )

overridevirtual

Remove all entries from the TLB.

Implements BaseTLB.

Definition at line 130 of file tlb.cc.

References DPRINTF, freeList, ArmISA::i, Trie< Key, Value >::remove(), size, tlb, and trie.

◆ flushNonGlobal()

void X86ISA::TLB::flushNonGlobal ( )

Definition at line 149 of file tlb.cc.

References DPRINTF, freeList, ArmISA::i, Trie< Key, Value >::remove(), size, tlb, and trie.

◆ getTableWalkerPort()

Port * X86ISA::TLB::getTableWalkerPort ( )

overridevirtual

Get the table walker port.

This is used for migrating port connections during a CPU takeOverFrom() call. For architectures that do not have a table walker, NULL is returned, hence the use of a pointer rather than a reference. For X86 this method will always return a valid port pointer.

Returns: A pointer to the walker port

Reimplemented from BaseTLB.

Definition at line 568 of file tlb.cc.

References X86ISA::Walker::getPort(), and walker.

◆ getWalker()

Walker * X86ISA::TLB::getWalker ( )

Definition at line 516 of file tlb.cc.

References walker.

◆ insert()

TlbEntry * X86ISA::TLB::insert	(	Addr	vpn,
		const TlbEntry &	entry
	)

Definition at line 97 of file tlb.cc.

References evictLRU(), freeList, Trie< Key, Value >::insert(), X86ISA::TlbEntry::logBytes, Trie< Key, Value >::lookup(), X86ISA::TlbEntry::lruSeq, Trie< Addr, X86ISA::TlbEntry >::MaxBits, nextSeq(), trie, X86ISA::TlbEntry::trieHandle, and X86ISA::TlbEntry::vaddr.

Referenced by translate().

◆ lookup()

TlbEntry * X86ISA::TLB::lookup	(	Addr	va,
		bool	update_lru = `true`
	)

Definition at line 121 of file tlb.cc.

References Trie< Key, Value >::lookup(), X86ISA::TlbEntry::lruSeq, nextSeq(), trie, and ArmISA::va.

Referenced by translate().

◆ lookupIt()

EntryList::iterator X86ISA::TLB::lookupIt	(	Addr	va,
		bool	update_lru = `true`
	)

protected

◆ nextSeq()

uint64_t X86ISA::TLB::nextSeq ( )

inline

Definition at line 124 of file tlb.hh.

References lruSeq.

Referenced by insert(), and lookup().

◆ serialize()

void X86ISA::TLB::serialize ( CheckpointOut & cp ) const

overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 531 of file tlb.cc.

References csprintf(), freeList, lruSeq, SERIALIZE_SCALAR, size, tlb, and X86ISA::x.

◆ setConfigAddress()

void X86ISA::TLB::setConfigAddress ( uint32_t addr )

Definition at line 143 of file tlb.cc.

References X86ISA::addr, and configAddress.

◆ takeOverFrom()

void X86ISA::TLB::takeOverFrom ( BaseTLB * otlb )

inlineoverridevirtual

Take over from an old tlb context.

Implements BaseTLB.

Definition at line 71 of file tlb.hh.

◆ translate()

Fault X86ISA::TLB::translate	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode,
		bool &	delayedResponse,
		bool	timing
	)

protected

Definition at line 307 of file tlb.cc.

References X86ISA::AddrSizeFlagBit, ArmISA::attr, X86ISA::base, bits(), X86ISA::CPL0FlagBit, DPRINTF, X86ISA::expandDown, finalizePhysical(), EmulationPageTable::Entry::flags, X86ISA::FlagShift, FullSystem, ThreadContext::getProcessPtr(), insert(), ThreadContext::instAddr(), X86ISA::limit, X86ISA::TlbEntry::logBytes, lookup(), X86ISA::mask, X86ISA::MISCREG_CR0, X86ISA::MISCREG_M5_REG, X86ISA::MISCREG_SEG_ATTR(), X86ISA::MISCREG_SEG_BASE(), X86ISA::MISCREG_SEG_LIMIT(), X86ISA::MISCREG_SEG_SEL(), ArmISA::mode, NoFault, X86ISA::offset, X86ISA::p, EmulationPageTable::Entry::paddr, X86ISA::TlbEntry::paddr, X86ISA::TLB::TlbStats::rdAccesses, X86ISA::TLB::TlbStats::rdMisses, BaseTLB::Read, ThreadContext::readMiscRegNoEffect(), EmulationPageTable::ReadOnly, X86ISA::seg, X86ISA::SEGMENT_REG_ES, X86ISA::SEGMENT_REG_HS, X86ISA::SEGMENT_REG_LS, X86ISA::SEGMENT_REG_MS, X86ISA::SEGMENT_REG_TSG, X86ISA::SegmentFlagMask, X86ISA::SixtyFourBitMode, size, X86ISA::Walker::start(), stats, X86ISA::StoreCheck, Request::STRICT_ORDER, X86ISA::SYS_SEGMENT_REG_IDTR, translateInt(), X86ISA::TlbEntry::uncacheable, EmulationPageTable::Uncacheable, Request::UNCACHEABLE, X86ISA::TlbEntry::user, MipsISA::vaddr, walker, warn_once, X86ISA::TLB::TlbStats::wrAccesses, X86ISA::TlbEntry::writable, BaseTLB::Write, and X86ISA::TLB::TlbStats::wrMisses.

Referenced by translateAtomic(), and translateTiming().

◆ translateAtomic()

Fault X86ISA::TLB::translateAtomic	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode
	)

overridevirtual

Implements BaseTLB.

Definition at line 461 of file tlb.cc.

References ArmISA::mode, and translate().

◆ translateFunctional()

Fault X86ISA::TLB::translateFunctional	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode
	)

overridevirtual

Reimplemented from BaseTLB.

Definition at line 468 of file tlb.cc.

References X86ISA::addr, DPRINTF, BaseTLB::Execute, Process::fixupFault(), FullSystem, ThreadContext::getProcessPtr(), insertBits(), EmulationPageTable::lookup(), ArmISA::mode, NoFault, EmulationPageTable::pageOffset(), Process::pTable, X86ISA::Walker::startFunctional(), MipsISA::vaddr, and walker.

◆ translateInt()

Fault X86ISA::TLB::translateInt	(	bool	read,
		RequestPtr	req,
		ThreadContext *	tc
	)

protected

Definition at line 195 of file tlb.cc.

References bits(), configAddress, DPRINTF, X86ISA::IntAddrPrefixCPUID, X86ISA::IntAddrPrefixIO, X86ISA::IntAddrPrefixMask, X86ISA::IntAddrPrefixMSR, X86ISA::mask, mbits(), X86ISA::MISCREG_PCI_CONFIG_ADDRESS, X86ISA::msrAddrToIndex(), NoFault, panic, X86ISA::PhysAddrPrefixIO, X86ISA::PhysAddrPrefixPciConfig, ThreadContext::readMiscRegNoEffect(), Request::STRICT_ORDER, Request::UNCACHEABLE, and MipsISA::vaddr.

Referenced by translate().

◆ translateTiming()

void X86ISA::TLB::translateTiming	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode
	)

overridevirtual

Implements BaseTLB.

Definition at line 502 of file tlb.cc.

References BaseTLB::Translation::finish(), BaseTLB::Translation::markDelayed(), ArmISA::mode, and translate().

◆ unserialize()

void X86ISA::TLB::unserialize ( CheckpointIn & cp )

overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 546 of file tlb.cc.

References csprintf(), fatal, freeList, Trie< Key, Value >::insert(), X86ISA::TlbEntry::logBytes, lruSeq, Trie< Addr, X86ISA::TlbEntry >::MaxBits, size, trie, X86ISA::TlbEntry::trieHandle, UNSERIALIZE_SCALAR, Serializable::unserializeSection(), X86ISA::TlbEntry::vaddr, and X86ISA::x.

Friends And Related Function Documentation

◆ Walker

friend class Walker

friend

Definition at line 60 of file tlb.hh.

Member Data Documentation

◆ configAddress

uint32_t X86ISA::TLB::configAddress

protected

Definition at line 64 of file tlb.hh.

Referenced by setConfigAddress(), and translateInt().

◆ freeList

EntryList X86ISA::TLB::freeList

protected

Definition at line 97 of file tlb.hh.

Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), serialize(), TLB(), and unserialize().

◆ lruSeq

uint64_t X86ISA::TLB::lruSeq

protected

Definition at line 100 of file tlb.hh.

Referenced by evictLRU(), nextSeq(), serialize(), and unserialize().

◆ m5opRange

AddrRange X86ISA::TLB::m5opRange

protected

Definition at line 102 of file tlb.hh.

Referenced by finalizePhysical().

◆ size

uint32_t X86ISA::TLB::size

protected

Definition at line 93 of file tlb.hh.

Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), TLB(), translate(), and unserialize().

◆ stats

X86ISA::TLB::TlbStats X86ISA::TLB::stats

protected

Referenced by translate().

◆ tlb

std::vector<TlbEntry> X86ISA::TLB::tlb

protected

Definition at line 95 of file tlb.hh.

Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), and TLB().

◆ trie

TlbEntryTrie X86ISA::TLB::trie

protected

Definition at line 99 of file tlb.hh.

Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), lookup(), and unserialize().

◆ walker

Walker* X86ISA::TLB::walker

protected

Definition at line 81 of file tlb.hh.

Referenced by getTableWalkerPort(), getWalker(), TLB(), translate(), and translateFunctional().

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

arch/x86/tlb.hh
arch/x86/tlb.cc

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ EntryList

◆ Params

Constructor & Destructor Documentation

◆ TLB()

Member Function Documentation

◆ demapPage()

◆ evictLRU()

◆ finalizePhysical()

◆ flushAll()

◆ flushNonGlobal()

◆ getTableWalkerPort()

◆ getWalker()

◆ insert()

◆ lookup()

◆ lookupIt()

◆ nextSeq()

◆ serialize()

◆ setConfigAddress()

◆ takeOverFrom()

◆ translate()

◆ translateAtomic()

◆ translateFunctional()

◆ translateInt()

◆ translateTiming()

◆ unserialize()

Friends And Related Function Documentation

◆ Walker

Member Data Documentation

◆ configAddress

◆ freeList

◆ lruSeq

◆ m5opRange

◆ size

◆ stats

◆ tlb

◆ trie

◆ walker