MinorCPU is an in-order CPU model with four fixed pipeline stages: More...

#include <cpu.hh>

Inheritance diagram for gem5::MinorCPU:

Classes
class	MinorCPUPort
	Provide a non-protected base class for Minor's Ports as derived classes are created by Fetch1 and Execute. More...

Public Member Functions
	MinorCPU (const BaseMinorCPUParams &params)

	~MinorCPU ()

void	init () override
	Starting, waking and initialisation. More...

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

void	wakeup (ThreadID tid) override

void	regStats () override
	Stats interface from SimObject (by way of BaseCPU) More...

Counter	totalInsts () const override
	Simple inst count interface from BaseCPU. More...

Counter	totalOps () const override

void	serializeThread (CheckpointOut &cp, ThreadID tid) const override
	Serialize a single thread. More...

void	unserializeThread (CheckpointIn &cp, ThreadID tid) override
	Unserialize one thread. More...

void	serialize (CheckpointOut &cp) const override
	Serialize pipeline data. More...

void	unserialize (CheckpointIn &cp) override
	Reconstruct the state of this object from a checkpoint. More...

DrainState	drain () override
	Drain interface. More...

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

void	signalDrainDone ()
	Signal from Pipeline that MinorCPU should signal that a drain is complete and set its drainState. More...

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

void	switchOut () override
	Switching interface from BaseCPU. More...

void	takeOverFrom (BaseCPU *old_cpu) override
	Load the state of a CPU from the previous CPU object, invoked on all new CPUs that are about to be switched in. More...

void	activateContext (ThreadID thread_id) override
	Thread activation interface from BaseCPU. More...

void	suspendContext (ThreadID thread_id) override
	Notify the CPU that the indicated context is now suspended. More...

std::vector< ThreadID >	roundRobinPriority (ThreadID priority)
	Thread scheduling utility functions. More...

std::vector< ThreadID >	randomPriority ()

void	tick ()
	The tick method in the MinorCPU is simply updating the cycle counters as the ticking of the pipeline stages is already handled by the Pipeline object. More...

void	wakeupOnEvent (unsigned int stage_id)
	Interface for stages to signal that they have become active after a callback or eventq event where the pipeline itself may have already been idled. More...

Public Member Functions inherited from gem5::BaseCPU
int	cpuId () const
	Reads this CPU's ID. More...

uint32_t	socketId () const
	Reads this CPU's Socket ID. More...

RequestorID	dataRequestorId () const
	Reads this CPU's unique data requestor ID. More...

RequestorID	instRequestorId () const
	Reads this CPU's unique instruction requestor ID. More...

Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Get a port on this CPU. More...

uint32_t	taskId () const
	Get cpu task id. More...

void	taskId (uint32_t id)
	Set cpu task id. More...

uint32_t	getPid () const

void	setPid (uint32_t pid)

void	workItemBegin ()

void	workItemEnd ()

Tick	instCount ()

BaseInterrupts *	getInterruptController (ThreadID tid)

void	postInterrupt (ThreadID tid, int int_num, int index)

void	clearInterrupt (ThreadID tid, int int_num, int index)

void	clearInterrupts (ThreadID tid)

bool	checkInterrupts (ThreadID tid) const

trace::InstTracer *	getTracer ()
	Provide access to the tracer pointer. More...

virtual void	haltContext (ThreadID thread_num)
	Notify the CPU that the indicated context is now halted. More...

int	findContext (ThreadContext *tc)
	Given a Thread Context pointer return the thread num. More...

virtual ThreadContext *	getContext (int tn)
	Given a thread num get tho thread context for it. More...

unsigned	numContexts ()
	Get the number of thread contexts available. More...

ThreadID	contextToThread (ContextID cid)
	Convert ContextID to threadID. More...

	PARAMS (BaseCPU)

	BaseCPU (const Params &params, bool is_checker=false)

virtual	~BaseCPU ()

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

void	registerThreadContexts ()

void	deschedulePowerGatingEvent ()

void	schedulePowerGatingEvent ()

void	flushTLBs ()
	Flush all TLBs in the CPU. More...

bool	switchedOut () const
	Determine if the CPU is switched out. More...

virtual void	verifyMemoryMode () const
	Verify that the system is in a memory mode supported by the CPU. More...

unsigned int	cacheLineSize () const
	Get the cache line size of the system. More...

void	scheduleInstStop (ThreadID tid, Counter insts, std::string cause)
	Schedule an event that exits the simulation loops after a predefined number of instructions. More...

void	scheduleSimpointsInstStop (std::vector< Counter > inst_starts)
	Schedule simpoint events using the scheduleInstStop function. More...

void	scheduleInstStopAnyThread (Counter max_insts)
	Schedule an exit event when any threads in the core reach the max_insts instructions using the scheduleInstStop function. More...

uint64_t	getCurrentInstCount (ThreadID tid)
	Get the number of instructions executed by the specified thread on this CPU. More...

void	traceFunctions (Addr pc)

void	armMonitor (ThreadID tid, Addr address)

bool	mwait (ThreadID tid, PacketPtr pkt)

void	mwaitAtomic (ThreadID tid, ThreadContext tc, BaseMMU mmu)

AddressMonitor *	getCpuAddrMonitor (ThreadID tid)

virtual void	htmSendAbortSignal (ThreadID tid, uint64_t htm_uid, HtmFailureFaultCause cause)
	This function is used to instruct the memory subsystem that a transaction should be aborted and the speculative state should be thrown away. More...

virtual void	probeInstCommit (const StaticInstPtr &inst, Addr pc)
	Helper method to trigger PMU probes for a committed instruction. More...

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 Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

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

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

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

Group &	operator= (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

Public Attributes
minor::MinorActivityRecorder *	activityRecorder
	Activity recording for pipeline. More...

std::vector< minor::MinorThread * >	threads
	These are thread state-representing objects for this CPU. More...

enums::ThreadPolicy	threadPolicy
	Thread Scheduling Policy (RoundRobin, Random, etc) More...

minor::MinorStats	stats
	Processor-specific statistics. More...

EventFunctionWrapper *	fetchEventWrapper

Public Attributes inherited from gem5::BaseCPU
ThreadID	numThreads
	Number of threads we're actually simulating (<= SMT_MAX_THREADS). More...

System *	system

gem5::BaseCPU::BaseCPUStats	baseStats

Cycles	syscallRetryLatency

Public Attributes inherited from gem5::ClockedObject
PowerState *	powerState

Protected Member Functions
Port &	getDataPort () override
	Return a reference to the data port. More...

Port &	getInstPort () override
	Return a reference to the instruction port. More...

Protected Member Functions inherited from gem5::BaseCPU
void	updateCycleCounters (CPUState state)
	base method keeping track of cycle progression More...

void	enterPwrGating ()

probing::PMUUPtr	pmuProbePoint (const char *name)
	Helper method to instantiate probe points belonging to this object. More...

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

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

Clocked &	operator= (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
minor::Pipeline *	pipeline
	pipeline is a container for the clockable pipeline stage objects. More...

Protected Attributes inherited from gem5::BaseCPU
Tick	instCnt
	Instruction count used for SPARC misc register. More...

int	_cpuId

const uint32_t	_socketId
	Each cpu will have a socket ID that corresponds to its physical location in the system. More...

RequestorID	_instRequestorId
	instruction side request id that must be placed in all requests More...

RequestorID	_dataRequestorId
	data side request id that must be placed in all requests More...

uint32_t	_taskId
	An intrenal representation of a task identifier within gem5. More...

uint32_t	_pid
	The current OS process ID that is executing on this processor. More...

bool	_switchedOut
	Is the CPU switched out or active? More...

const unsigned int	_cacheLineSize
	Cache the cache line size that we get from the system. More...

std::vector< BaseInterrupts * >	interrupts

std::vector< ThreadContext * >	threadContexts

trace::InstTracer *	tracer

Cycles	previousCycle

CPUState	previousState

const Cycles	pwrGatingLatency

const bool	powerGatingOnIdle

EventFunctionWrapper	enterPwrGatingEvent

probing::PMUUPtr	ppRetiredInsts
	Instruction commit probe point. More...

probing::PMUUPtr	ppRetiredInstsPC

probing::PMUUPtr	ppRetiredLoads
	Retired load instructions. More...

probing::PMUUPtr	ppRetiredStores
	Retired store instructions. More...

probing::PMUUPtr	ppRetiredBranches
	Retired branches (any type) More...

probing::PMUUPtr	ppAllCycles
	CPU cycle counter even if any thread Context is suspended. More...

probing::PMUUPtr	ppActiveCycles
	CPU cycle counter, only counts if any thread contexts is active. More...

ProbePointArg< bool > *	ppSleeping
	ProbePoint that signals transitions of threadContexts sets. More...

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Additional Inherited Members
Public Types inherited from gem5::ClockedObject
using	Params = ClockedObjectParams
	Parameters of ClockedObject. More...

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Static Public Member Functions inherited from gem5::BaseCPU
static int	numSimulatedCPUs ()

static Counter	numSimulatedInsts ()

static Counter	numSimulatedOps ()

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 SimObject *	find (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 SimObjectResolver *	getSimObjectResolver ()
	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...

Static Public Attributes inherited from gem5::BaseCPU
static const uint32_t	invldPid = std::numeric_limits<uint32_t>::max()
	Invalid or unknown Pid. More...

Protected Types inherited from gem5::BaseCPU
enum	CPUState { CPU_STATE_ON , CPU_STATE_SLEEP , CPU_STATE_WAKEUP }

Static Protected Attributes inherited from gem5::BaseCPU
static std::unique_ptr< GlobalStats >	globalStats
	Pointer to the global stat structure. More...

Detailed Description

MinorCPU is an in-order CPU model with four fixed pipeline stages:

Fetch1 - fetches lines from memory Fetch2 - decomposes lines into macro-op instructions Decode - decomposes macro-ops into micro-ops Execute - executes those micro-ops

This pipeline is carried in the MinorCPU::pipeline object. The exec_context interface is not carried by MinorCPU but by minor::ExecContext objects created by minor::Execute.

Definition at line 85 of file cpu.hh.

Constructor & Destructor Documentation

◆ MinorCPU()

gem5::MinorCPU::MinorCPU ( const BaseMinorCPUParams & params )

Definition at line 50 of file cpu.cc.

References activityRecorder, fatal, fetchEventWrapper, gem5::FullSystem, gem5::SimpleThread::getTC(), gem5::ThreadContext::Halted, gem5::ArmISA::i, gem5::BaseCPU::numThreads, gem5::SimObject::params(), gem5::SimpleThread::setStatus(), gem5::BaseCPU::threadContexts, and threads.

◆ ~MinorCPU()

gem5::MinorCPU::~MinorCPU ( )

Definition at line 85 of file cpu.cc.

References fetchEventWrapper, pipeline, and threads.

Member Function Documentation

◆ activateContext()

void gem5::MinorCPU::activateContext ( ThreadID thread_id )

overridevirtual

Thread activation interface from BaseCPU.

Reimplemented from gem5::BaseCPU.

Definition at line 252 of file cpu.cc.

References gem5::BaseCPU::activateContext(), gem5::Clocked::clockEdge(), gem5::minor::Pipeline::CPUStageId, DPRINTF, fetchEventWrapper, gem5::minor::MinorStats::quiesceCycles, gem5::EventManager::schedule(), stats, threads, and wakeupOnEvent().

◆ drain()

DrainState gem5::MinorCPU::drain ( )

overridevirtual

Drain interface.

Implements gem5::Drainable.

Definition at line 165 of file cpu.cc.

References gem5::BaseCPU::deschedulePowerGatingEvent(), DPRINTF, gem5::Drained, gem5::Draining, and gem5::BaseCPU::switchedOut().

◆ drainResume()

void gem5::MinorCPU::drainResume ( )

overridevirtual

Resume execution after a successful drain.

Reimplemented from gem5::Drainable.

Definition at line 196 of file cpu.cc.

References DPRINTF, fatal, gem5::System::isTimingMode(), gem5::BaseCPU::numThreads, gem5::BaseCPU::schedulePowerGatingEvent(), gem5::BaseCPU::switchedOut(), gem5::BaseCPU::system, and wakeup().

◆ getDataPort()

Port & gem5::MinorCPU::getDataPort ( )

overrideprotectedvirtual

Return a reference to the data port.

Implements gem5::BaseCPU.

Definition at line 307 of file cpu.cc.

◆ getInstPort()

Port & gem5::MinorCPU::getInstPort ( )

overrideprotectedvirtual

Return a reference to the instruction port.

Implements gem5::BaseCPU.

Definition at line 301 of file cpu.cc.

◆ init()

void gem5::MinorCPU::init ( )

overridevirtual

Starting, waking and initialisation.

Reimplemented from gem5::BaseCPU.

Definition at line 98 of file cpu.cc.

References fatal, gem5::System::getMemoryMode(), gem5::BaseCPU::init(), gem5::SimObject::params(), and gem5::BaseCPU::system.

◆ memWriteback()

void gem5::MinorCPU::memWriteback ( )

overridevirtual

Write back dirty buffers to memory using functional writes.

After returning, an object implementing this method should have written all its dirty data back to memory. This method is typically used to prepare a system with caches for checkpointing.

Reimplemented from gem5::SimObject.

Definition at line 226 of file cpu.cc.

References DPRINTF.

◆ randomPriority()

std::vector<ThreadID> gem5::MinorCPU::randomPriority ( )

inline

Definition at line 182 of file cpu.hh.

References gem5::Random::gen, gem5::ArmISA::i, gem5::BaseCPU::numThreads, and gem5::random_mt.

Referenced by gem5::minor::Execute::getCommittingThread(), gem5::minor::Execute::getIssuingThread(), gem5::minor::Decode::getScheduledThread(), gem5::minor::Fetch1::getScheduledThread(), and gem5::minor::Fetch2::getScheduledThread().

◆ regStats()

void gem5::MinorCPU::regStats ( )

overridevirtual

Stats interface from SimObject (by way of BaseCPU)

Reimplemented from gem5::BaseCPU.

Definition at line 110 of file cpu.cc.

References gem5::BaseCPU::regStats().

◆ roundRobinPriority()

std::vector<ThreadID> gem5::MinorCPU::roundRobinPriority ( ThreadID priority )

inline

Thread scheduling utility functions.

Definition at line 173 of file cpu.hh.

References gem5::ArmISA::i, and gem5::BaseCPU::numThreads.

Referenced by gem5::minor::Execute::getCommittingThread(), gem5::minor::Execute::getIssuingThread(), gem5::minor::Decode::getScheduledThread(), gem5::minor::Fetch1::getScheduledThread(), and gem5::minor::Fetch2::getScheduledThread().

◆ serialize()

void gem5::MinorCPU::serialize ( CheckpointOut & cp ) const

overridevirtual

Serialize pipeline data.

Reimplemented from gem5::BaseCPU.

Definition at line 129 of file cpu.cc.

References gem5::BaseCPU::serialize().

◆ serializeThread()

void gem5::MinorCPU::serializeThread	(	CheckpointOut &	cp,
		ThreadID	tid
	)		const

overridevirtual

Serialize a single thread.

Parameters

cp	The stream to serialize to.
tid	ID of the current thread.

Reimplemented from gem5::BaseCPU.

Definition at line 117 of file cpu.cc.

References threads.

◆ signalDrainDone()

void gem5::MinorCPU::signalDrainDone ( )

Signal from Pipeline that MinorCPU should signal that a drain is complete and set its drainState.

Definition at line 189 of file cpu.cc.

References DPRINTF, and gem5::Drainable::signalDrainDone().

Referenced by gem5::minor::Pipeline::evaluate().

◆ startup()

void gem5::MinorCPU::startup ( )

overridevirtual

startup() is the final initialization call before simulation.

All state is initialized (including unserialized state, if any, such as the curTick() value), so this is the appropriate place to schedule initial event(s) for objects that need them.

Reimplemented from gem5::BaseCPU.

Definition at line 154 of file cpu.cc.

References DPRINTF, gem5::BaseCPU::numThreads, and gem5::BaseCPU::startup().

◆ suspendContext()

void gem5::MinorCPU::suspendContext ( ThreadID thread_num )

overridevirtual

Notify the CPU that the indicated context is now suspended.

Check if possible to enter a lower power state

Reimplemented from gem5::BaseCPU.

Definition at line 281 of file cpu.cc.

References DPRINTF, gem5::BaseCPU::suspendContext(), and threads.

◆ switchOut()

void gem5::MinorCPU::switchOut ( )

overridevirtual

Switching interface from BaseCPU.

Reimplemented from gem5::BaseCPU.

Definition at line 232 of file cpu.cc.

References activityRecorder, DPRINTF, gem5::ActivityRecorder::reset(), gem5::BaseCPU::switchedOut(), and gem5::BaseCPU::switchOut().

◆ takeOverFrom()

void gem5::MinorCPU::takeOverFrom ( BaseCPU * cpu )

overridevirtual

Load the state of a CPU from the previous CPU object, invoked on all new CPUs that are about to be switched in.

A CPU model implementing this method is expected to initialize its state from the old CPU and connect its memory (unless they are already connected) to the memories connected to the old CPU.

Parameters

cpu	CPU to initialize read state from.

Reimplemented from gem5::BaseCPU.

Definition at line 244 of file cpu.cc.

References DPRINTF, and gem5::BaseCPU::takeOverFrom().

◆ tick()

void gem5::MinorCPU::tick ( )

inline

The tick method in the MinorCPU is simply updating the cycle counters as the ticking of the pipeline stages is already handled by the Pipeline object.

Definition at line 199 of file cpu.hh.

References gem5::BaseCPU::CPU_STATE_ON, and gem5::BaseCPU::updateCycleCounters().

Referenced by gem5::minor::Pipeline::evaluate().

◆ totalInsts()

Counter gem5::MinorCPU::totalInsts ( ) const

overridevirtual

Simple inst count interface from BaseCPU.

Implements gem5::BaseCPU.

Definition at line 313 of file cpu.cc.

References gem5::ArmISA::i, and threads.

◆ totalOps()

Counter gem5::MinorCPU::totalOps ( ) const

overridevirtual

Implements gem5::BaseCPU.

Definition at line 324 of file cpu.cc.

References gem5::ArmISA::i, and threads.

◆ unserialize()

void gem5::MinorCPU::unserialize ( CheckpointIn & cp )

overridevirtual

Reconstruct the state of this object from a checkpoint.

Note: CPU models should normally overload the unserializeThread() method instead of the unserialize() method as this provides a uniform data format for all CPU models and promotes better code reuse.

Parameters

cp	The checkpoint use.

Reimplemented from gem5::BaseCPU.

Definition at line 136 of file cpu.cc.

References gem5::BaseCPU::unserialize().

◆ unserializeThread()

void gem5::MinorCPU::unserializeThread	(	CheckpointIn &	cp,
		ThreadID	tid
	)

overridevirtual

Unserialize one thread.

Parameters

cp	The checkpoint use.
tid	ID of the current thread.

Reimplemented from gem5::BaseCPU.

Definition at line 123 of file cpu.cc.

References threads.

◆ wakeup()

void gem5::MinorCPU::wakeup ( ThreadID tid )

overridevirtual

Implements gem5::BaseCPU.

Definition at line 143 of file cpu.cc.

References DPRINTF, gem5::BaseCPU::numThreads, gem5::ArmISA::status, gem5::ThreadContext::Suspended, and threads.

Referenced by drainResume(), gem5::minor::LSQ::recvTimingSnoopReq(), and gem5::minor::LSQ::threadSnoop().

◆ wakeupOnEvent()

void gem5::MinorCPU::wakeupOnEvent ( unsigned int stage_id )

Interface for stages to signal that they have become active after a callback or eventq event where the pipeline itself may have already been idled.

The stage argument should be from the enumeration Pipeline::StageId

Definition at line 291 of file cpu.cc.

References gem5::ActivityRecorder::activateStage(), activityRecorder, and DPRINTF.

Referenced by activateContext(), gem5::minor::Execute::drain(), gem5::minor::Execute::drainResume(), gem5::minor::Execute::evaluate(), gem5::minor::Fetch1::evaluate(), gem5::minor::Fetch1::recvTimingResp(), gem5::minor::LSQ::recvTimingResp(), gem5::minor::Fetch1::tryToSendToTransfers(), and gem5::minor::Fetch1::wakeupFetch().

Member Data Documentation

◆ activityRecorder

minor::MinorActivityRecorder* gem5::MinorCPU::activityRecorder

Activity recording for pipeline.

This belongs to Pipeline but stages will access it through the CPU as the MinorCPU object actually mediates idling behaviour

Definition at line 96 of file cpu.hh.

Referenced by gem5::minor::Decode::evaluate(), gem5::minor::Execute::evaluate(), gem5::minor::Fetch1::evaluate(), gem5::minor::Fetch2::evaluate(), gem5::minor::Execute::issue(), MinorCPU(), switchOut(), and wakeupOnEvent().

◆ fetchEventWrapper

EventFunctionWrapper* gem5::MinorCPU::fetchEventWrapper

Definition at line 206 of file cpu.hh.

Referenced by activateContext(), MinorCPU(), and ~MinorCPU().

◆ pipeline

minor::Pipeline* gem5::MinorCPU::pipeline

protected

pipeline is a container for the clockable pipeline stage objects.

Elements of pipeline call TheISA to implement the model.

Definition at line 90 of file cpu.hh.

Referenced by ~MinorCPU().

◆ stats

minor::MinorStats gem5::MinorCPU::stats

Processor-specific statistics.

Definition at line 140 of file cpu.hh.

Referenced by activateContext(), gem5::minor::Execute::commit(), gem5::minor::Execute::commitInst(), and gem5::minor::Execute::doInstCommitAccounting().

◆ threadPolicy

enums::ThreadPolicy gem5::MinorCPU::threadPolicy

Thread Scheduling Policy (RoundRobin, Random, etc)

Definition at line 120 of file cpu.hh.

Referenced by gem5::minor::Execute::getCommittingThread(), gem5::minor::Execute::getIssuingThread(), gem5::minor::Decode::getScheduledThread(), gem5::minor::Fetch1::getScheduledThread(), and gem5::minor::Fetch2::getScheduledThread().

◆ threads

std::vector<minor::MinorThread *> gem5::MinorCPU::threads

These are thread state-representing objects for this CPU.

If you need a ThreadContext for any reason, use threads[threadId]->getTC()

Definition at line 101 of file cpu.hh.

Referenced by activateContext(), gem5::minor::Execute::commitInst(), gem5::minor::Execute::doInstCommitAccounting(), gem5::minor::Execute::Execute(), gem5::minor::Execute::executeMemRefInst(), gem5::minor::Fetch1::Fetch1(), gem5::minor::Fetch1::fetchLine(), gem5::minor::Execute::handleMemResponse(), MinorCPU(), gem5::minor::LSQ::pushRequest(), serializeThread(), suspendContext(), totalInsts(), totalOps(), gem5::minor::Execute::tryPCEvents(), gem5::minor::LSQ::tryToSendToTransfers(), unserializeThread(), wakeup(), and ~MinorCPU().

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

cpu/minor/cpu.hh
cpu/minor/cpu.cc

Classes

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MinorCPU()

◆ ~MinorCPU()

Member Function Documentation

◆ activateContext()

◆ drain()

◆ drainResume()

◆ getDataPort()

◆ getInstPort()

◆ init()

◆ memWriteback()

◆ randomPriority()

◆ regStats()

◆ roundRobinPriority()

◆ serialize()

◆ serializeThread()

◆ signalDrainDone()

◆ startup()

◆ suspendContext()

◆ switchOut()

◆ takeOverFrom()

◆ tick()

◆ totalInsts()

◆ totalOps()

◆ unserialize()

◆ unserializeThread()

◆ wakeup()

◆ wakeupOnEvent()

Member Data Documentation

◆ activityRecorder

◆ fetchEventWrapper

◆ pipeline

◆ stats

◆ threadPolicy

◆ threads