gem5  v21.1.0.2
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gem5::X86ISA::Walker Class Reference

#include <pagetable_walker.hh>

Inheritance diagram for gem5::X86ISA::Walker:
gem5::ClockedObject gem5::SimObject gem5::Clocked gem5::EventManager gem5::Serializable gem5::Drainable gem5::statistics::Group gem5::Named

Classes

class  WalkerPort
 
struct  WalkerSenderState
 
class  WalkerState
 

Public Types

using Params = X86PagetableWalkerParams
 
- Public Types inherited from gem5::ClockedObject
using Params = ClockedObjectParams
 Parameters of ClockedObject. More...
 
- Public Types inherited from gem5::SimObject
typedef SimObjectParams Params
 

Public Member Functions

Fault start (ThreadContext *_tc, BaseMMU::Translation *translation, const RequestPtr &req, BaseMMU::Mode mode)
 
Fault startFunctional (ThreadContext *_tc, Addr &addr, unsigned &logBytes, BaseMMU::Mode mode)
 
PortgetPort (const std::string &if_name, PortID idx=InvalidPortID) override
 Get a port with a given name and index. More...
 
void setTLB (TLB *_tlb)
 
 Walker (const Params &params)
 
- Public Member Functions inherited from gem5::ClockedObject
 ClockedObject (const ClockedObjectParams &p)
 
void serialize (CheckpointOut &cp) const override
 Serialize an object. More...
 
void unserialize (CheckpointIn &cp) override
 Unserialize an object. More...
 
- Public Member Functions inherited from gem5::SimObject
const Paramsparams () const
 
 SimObject (const Params &p)
 
virtual ~SimObject ()
 
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...
 
ProbeManagergetProbeManager ()
 Get the probe manager for this object. 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...
 
virtual void memInvalidate ()
 Invalidate the contents of memory buffers. 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 gem5::EventManager
EventQueueeventQueue () 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 gem5::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 gem5::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 gem5::statistics::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 (statistics::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 InforesolveStat (std::string name) const
 Resolve a stat by its name within this group. More...
 
void mergeStatGroup (Group *block)
 Merge the contents (stats & children) of a block to this block. More...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 
- Public Member Functions inherited from gem5::Named
 Named (const std::string &name_)
 
virtual ~Named ()=default
 
virtual std::string name () const
 
- Public Member Functions inherited from gem5::Clocked
void updateClockPeriod ()
 Update the tick to the current tick. More...
 
Tick clockEdge (Cycles cycles=Cycles(0)) const
 Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle. More...
 
Cycles curCycle () const
 Determine the current cycle, corresponding to a tick aligned to a clock edge. More...
 
Tick nextCycle () const
 Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future. More...
 
uint64_t frequency () const
 
Tick clockPeriod () const
 
double voltage () const
 
Cycles ticksToCycles (Tick t) const
 
Tick cyclesToTicks (Cycles c) const
 

Protected Member Functions

void startWalkWrapper ()
 
bool recvTimingResp (PacketPtr pkt)
 
void recvReqRetry ()
 
bool sendTiming (WalkerState *sendingState, PacketPtr pkt)
 
- Protected Member Functions inherited from gem5::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 Member Functions inherited from gem5::Clocked
 Clocked (ClockDomain &clk_domain)
 Create a clocked object and set the clock domain based on the parameters. More...
 
 Clocked (Clocked &)=delete
 
Clockedoperator= (Clocked &)=delete
 
virtual ~Clocked ()
 Virtual destructor due to inheritance. More...
 
void resetClock () const
 Reset the object's clock using the current global tick value. More...
 
virtual void clockPeriodUpdated ()
 A hook subclasses can implement so they can do any extra work that's needed when the clock rate is changed. More...
 

Protected Attributes

WalkerPort port
 
std::list< WalkerState * > currStates
 
WalkerState funcState
 
TLBtlb
 
Systemsys
 
RequestorID requestorId
 
unsigned numSquashable
 
EventFunctionWrapper startWalkWrapperEvent
 Event used to call startWalkWrapper. More...
 
- Protected Attributes inherited from gem5::SimObject
const SimObjectParams & _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from gem5::EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Friends

class WalkerPort
 
class WalkerState
 

Additional Inherited Members

- Static Public Member Functions inherited from gem5::SimObject
static void serializeAll (const std::string &cpt_dir)
 Create a checkpoint by serializing all SimObjects in the system. More...
 
static SimObjectfind (const char *name)
 Find the SimObject with the given name and return a pointer to it. More...
 
static void setSimObjectResolver (SimObjectResolver *resolver)
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
static SimObjectResolvergetSimObjectResolver ()
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
- Static Public Member Functions inherited from gem5::Serializable
static const std::string & currentSection ()
 Gets the fully-qualified name of the active section. More...
 
static void generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
 Generate a checkpoint file so that the serialization can be routed to it. More...
 
- Public Attributes inherited from gem5::ClockedObject
PowerStatepowerState
 

Detailed Description

Definition at line 60 of file pagetable_walker.hh.

Member Typedef Documentation

◆ Params

using gem5::X86ISA::Walker::Params = X86PagetableWalkerParams

Definition at line 201 of file pagetable_walker.hh.

Constructor & Destructor Documentation

◆ Walker()

gem5::X86ISA::Walker::Walker ( const Params params)
inline

Definition at line 203 of file pagetable_walker.hh.

References startWalkWrapper().

Member Function Documentation

◆ getPort()

Port & gem5::X86ISA::Walker::getPort ( const std::string &  if_name,
PortID  idx = InvalidPortID 
)
overridevirtual

Get a port with a given name and index.

This is used at binding time and returns a reference to a protocol-agnostic port.

gem5 has a request and response port interface. All memory objects are connected together via ports. These ports provide a rigid interface between these memory objects. These ports implement three different memory system modes: timing, atomic, and functional. The most important mode is the timing mode and here timing mode is used for conducting cycle-level timing experiments. The other modes are only used in special circumstances and should not be used to conduct cycle-level timing experiments. The other modes are only used in special circumstances. These ports allow SimObjects to communicate with each other.

Parameters
if_namePort name
idxIndex in the case of a VectorPort
Returns
A reference to the given port

Reimplemented from gem5::SimObject.

Definition at line 172 of file pagetable_walker.cc.

References gem5::SimObject::getPort(), and port.

Referenced by gem5::X86ISA::TLB::getTableWalkerPort().

◆ recvReqRetry()

void gem5::X86ISA::Walker::recvReqRetry ( )
protected

◆ recvTimingResp()

bool gem5::X86ISA::Walker::recvTimingResp ( PacketPtr  pkt)
protected

◆ sendTiming()

bool gem5::X86ISA::Walker::sendTiming ( WalkerState sendingState,
PacketPtr  pkt 
)
protected

◆ setTLB()

void gem5::X86ISA::Walker::setTLB ( TLB _tlb)
inline

Definition at line 196 of file pagetable_walker.hh.

References tlb.

Referenced by gem5::X86ISA::TLB::TLB().

◆ start()

Fault gem5::X86ISA::Walker::start ( ThreadContext _tc,
BaseMMU::Translation translation,
const RequestPtr req,
BaseMMU::Mode  mode 
)

◆ startFunctional()

Fault gem5::X86ISA::Walker::startFunctional ( ThreadContext _tc,
Addr addr,
unsigned &  logBytes,
BaseMMU::Mode  mode 
)

◆ startWalkWrapper()

void gem5::X86ISA::Walker::startWalkWrapper ( )
protected

Friends And Related Function Documentation

◆ WalkerPort

friend class WalkerPort
friend

Definition at line 78 of file pagetable_walker.hh.

◆ WalkerState

friend class WalkerState
friend

Definition at line 149 of file pagetable_walker.hh.

Referenced by start().

Member Data Documentation

◆ currStates

std::list<WalkerState *> gem5::X86ISA::Walker::currStates
protected

Definition at line 152 of file pagetable_walker.hh.

Referenced by recvReqRetry(), recvTimingResp(), start(), and startWalkWrapper().

◆ funcState

WalkerState gem5::X86ISA::Walker::funcState
protected

Definition at line 154 of file pagetable_walker.hh.

Referenced by startFunctional().

◆ numSquashable

unsigned gem5::X86ISA::Walker::numSquashable
protected

Definition at line 179 of file pagetable_walker.hh.

Referenced by startWalkWrapper().

◆ port

WalkerPort gem5::X86ISA::Walker::port
protected

Definition at line 79 of file pagetable_walker.hh.

Referenced by getPort(), and sendTiming().

◆ requestorId

RequestorID gem5::X86ISA::Walker::requestorId
protected

Definition at line 176 of file pagetable_walker.hh.

◆ startWalkWrapperEvent

EventFunctionWrapper gem5::X86ISA::Walker::startWalkWrapperEvent
protected

Event used to call startWalkWrapper.

Definition at line 187 of file pagetable_walker.hh.

Referenced by recvTimingResp().

◆ sys

System* gem5::X86ISA::Walker::sys
protected

Definition at line 175 of file pagetable_walker.hh.

Referenced by start().

◆ tlb

TLB* gem5::X86ISA::Walker::tlb
protected

Definition at line 174 of file pagetable_walker.hh.

Referenced by setTLB().


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

Generated on Tue Sep 21 2021 12:35:00 for gem5 by doxygen 1.8.17