gem5
v20.1.0.0
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#include <tlb.hh>
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) |
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protected |
typedef X86TLBParams X86ISA::TLB::Params |
X86ISA::TLB::TLB | ( | const Params * | p | ) |
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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.
void X86ISA::TLB::evictLRU | ( | ) |
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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.
req | Request to updated in-place. |
tc | Thread context that created the request. |
mode | Request type (read/write/execute). |
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().
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void X86ISA::TLB::flushNonGlobal | ( | ) |
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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.
Reimplemented from BaseTLB.
Definition at line 568 of file tlb.cc.
References X86ISA::Walker::getPort(), and walker.
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().
Definition at line 121 of file tlb.cc.
References Trie< Key, Value >::lookup(), X86ISA::TlbEntry::lruSeq, nextSeq(), trie, and ArmISA::va.
Referenced by translate().
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inline |
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overridevirtual |
Serialize an object.
Output an object's state into the current checkpoint section.
cp | Checkpoint state |
Implements Serializable.
Definition at line 531 of file tlb.cc.
References csprintf(), freeList, lruSeq, SERIALIZE_SCALAR, size, tlb, and X86ISA::x.
void X86ISA::TLB::setConfigAddress | ( | uint32_t | addr | ) |
Definition at line 143 of file tlb.cc.
References X86ISA::addr, and configAddress.
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inlineoverridevirtual |
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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().
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overridevirtual |
Implements BaseTLB.
Definition at line 461 of file tlb.cc.
References ArmISA::mode, and translate().
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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.
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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().
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overridevirtual |
Implements BaseTLB.
Definition at line 502 of file tlb.cc.
References BaseTLB::Translation::finish(), BaseTLB::Translation::markDelayed(), ArmISA::mode, and translate().
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overridevirtual |
Unserialize an object.
Read an object's state from the current checkpoint section.
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.
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Definition at line 64 of file tlb.hh.
Referenced by setConfigAddress(), and translateInt().
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Definition at line 97 of file tlb.hh.
Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), serialize(), TLB(), and unserialize().
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Definition at line 100 of file tlb.hh.
Referenced by evictLRU(), nextSeq(), serialize(), and unserialize().
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Definition at line 102 of file tlb.hh.
Referenced by finalizePhysical().
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Definition at line 93 of file tlb.hh.
Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), TLB(), translate(), and unserialize().
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Referenced by translate().
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Definition at line 95 of file tlb.hh.
Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), and TLB().
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Definition at line 99 of file tlb.hh.
Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), lookup(), and unserialize().
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Definition at line 81 of file tlb.hh.
Referenced by getTableWalkerPort(), getWalker(), TLB(), translate(), and translateFunctional().