FullO3CPU class, has each of the stages (fetch through commit) within it, as well as all of the time buffers between stages. More...

#include <cpu.hh>

Inheritance diagram for FullO3CPU< Impl >:

Classes
class	DcachePort
	DcachePort class for the load/store queue. More...

class	IcachePort
	IcachePort class for instruction fetch. More...

class	TickEvent

Public Types
enum	Status { Running, Idle, Halted, Blocked, SwitchedOut }

enum	StageIdx { FetchIdx, DecodeIdx, RenameIdx, IEWIdx, CommitIdx, NumStages }
	Enum to give each stage a specific index, so when calling activateStage() or deactivateStage(), they can specify which stage is being activated/deactivated. More...

typedef Impl::CPUPol	CPUPolicy

typedef Impl::DynInstPtr	DynInstPtr

typedef Impl::O3CPU	O3CPU

typedef O3ThreadState< Impl >	ImplState

typedef O3ThreadState< Impl >	Thread

typedef std::list< DynInstPtr > ::iterator	ListIt

typedef CPUPolicy::TimeStruct	TimeStruct
	Typedefs from the Impl to get the structs that each of the time buffers should use. More...

typedef CPUPolicy::FetchStruct	FetchStruct

typedef CPUPolicy::DecodeStruct	DecodeStruct

typedef CPUPolicy::RenameStruct	RenameStruct

typedef CPUPolicy::IEWStruct	IEWStruct

Public Member Functions
	FullO3CPU (DerivO3CPUParams *params)
	Constructs a CPU with the given parameters. More...

	~FullO3CPU ()
	Destructor. More...

void	regStats () override
	Registers statistics. More...

void	regProbePoints () override
	Register probe points. More...

void	demapPage (Addr vaddr, uint64_t asn)

void	demapInstPage (Addr vaddr, uint64_t asn)

void	demapDataPage (Addr vaddr, uint64_t asn)

void	tick ()
	Ticks CPU, calling tick() on each stage, and checking the overall activity to see if the CPU should deschedule itself. More...

void	init () override
	Initialize the CPU. More...

void	startup () override

int	numActiveThreads ()
	Returns the Number of Active Threads in the CPU. More...

void	activateThread (ThreadID tid)
	Add Thread to Active Threads List. More...

void	deactivateThread (ThreadID tid)
	Remove Thread from Active Threads List. More...

void	insertThread (ThreadID tid)
	Setup CPU to insert a thread's context. More...

void	removeThread (ThreadID tid)
	Remove all of a thread's context from CPU. More...

Counter	totalInsts () const override
	Count the Total Instructions Committed in the CPU. More...

Counter	totalOps () const override
	Count the Total Ops (including micro ops) committed in the CPU. More...

void	activateContext (ThreadID tid) override
	Add Thread to Active Threads List. More...

void	suspendContext (ThreadID tid) override
	Remove Thread from Active Threads List. More...

void	haltContext (ThreadID tid) override
	Remove Thread from Active Threads List && Remove Thread Context from CPU. More...

void	updateThreadPriority ()
	Update The Order In Which We Process Threads. More...

bool	isDraining () const
	Is the CPU draining? More...

void	serializeThread (CheckpointOut &cp, ThreadID tid) const override

void	unserializeThread (CheckpointIn &cp, ThreadID tid) override

void	syscall (int64_t callnum, ThreadID tid, Fault *fault)
	Executes a syscall. More...

DrainState	drain () override
	Starts draining the CPU's pipeline of all instructions in order to stop all memory accesses. More...

void	drainResume () override
	Resumes execution after a drain. More...

void	commitDrained (ThreadID tid)
	Commit has reached a safe point to drain a thread. More...

void	switchOut () override
	Switches out this CPU. More...

void	takeOverFrom (BaseCPU *oldCPU) override
	Takes over from another CPU. More...

void	verifyMemoryMode () const override

InstSeqNum	getAndIncrementInstSeq ()
	Get the current instruction sequence number, and increment it. More...

void	trap (const Fault &fault, ThreadID tid, const StaticInstPtr &inst)
	Traps to handle given fault. More...

Fault	hwrei (ThreadID tid)
	HW return from error interrupt. More...

bool	simPalCheck (int palFunc, ThreadID tid)

Fault	getInterrupts ()
	Returns the Fault for any valid interrupt. More...

void	processInterrupts (const Fault &interrupt)
	Processes any an interrupt fault. More...

void	halt ()
	Halts the CPU. More...

TheISA::MiscReg	readMiscRegNoEffect (int misc_reg, ThreadID tid) const
	Register accessors. More...

TheISA::MiscReg	readMiscReg (int misc_reg, ThreadID tid)
	Reads a misc. More...

void	setMiscRegNoEffect (int misc_reg, const TheISA::MiscReg &val, ThreadID tid)
	Sets a miscellaneous register. More...

void	setMiscReg (int misc_reg, const TheISA::MiscReg &val, ThreadID tid)
	Sets a misc. More...

uint64_t	readIntReg (int reg_idx)

TheISA::FloatReg	readFloatReg (int reg_idx)

TheISA::FloatRegBits	readFloatRegBits (int reg_idx)

TheISA::CCReg	readCCReg (int reg_idx)

void	setIntReg (int reg_idx, uint64_t val)

void	setFloatReg (int reg_idx, TheISA::FloatReg val)

void	setFloatRegBits (int reg_idx, TheISA::FloatRegBits val)

void	setCCReg (int reg_idx, TheISA::CCReg val)

uint64_t	readArchIntReg (int reg_idx, ThreadID tid)

float	readArchFloatReg (int reg_idx, ThreadID tid)

uint64_t	readArchFloatRegInt (int reg_idx, ThreadID tid)

TheISA::CCReg	readArchCCReg (int reg_idx, ThreadID tid)

void	setArchIntReg (int reg_idx, uint64_t val, ThreadID tid)
	Architectural register accessors. More...

void	setArchFloatReg (int reg_idx, float val, ThreadID tid)

void	setArchFloatRegInt (int reg_idx, uint64_t val, ThreadID tid)

void	setArchCCReg (int reg_idx, TheISA::CCReg val, ThreadID tid)

void	pcState (const TheISA::PCState &newPCState, ThreadID tid)
	Sets the commit PC state of a specific thread. More...

TheISA::PCState	pcState (ThreadID tid)
	Reads the commit PC state of a specific thread. More...

Addr	instAddr (ThreadID tid)
	Reads the commit PC of a specific thread. More...

MicroPC	microPC (ThreadID tid)
	Reads the commit micro PC of a specific thread. More...

Addr	nextInstAddr (ThreadID tid)
	Reads the next PC of a specific thread. More...

void	squashFromTC (ThreadID tid)
	Initiates a squash of all in-flight instructions for a given thread. More...

ListIt	addInst (DynInstPtr &inst)
	Function to add instruction onto the head of the list of the instructions. More...

void	instDone (ThreadID tid, DynInstPtr &inst)
	Function to tell the CPU that an instruction has completed. More...

void	removeFrontInst (DynInstPtr &inst)
	Remove an instruction from the front end of the list. More...

void	removeInstsNotInROB (ThreadID tid)
	Remove all instructions that are not currently in the ROB. More...

void	removeInstsUntil (const InstSeqNum &seq_num, ThreadID tid)
	Remove all instructions younger than the given sequence number. More...

void	squashInstIt (const ListIt &instIt, ThreadID tid)
	Removes the instruction pointed to by the iterator. More...

void	cleanUpRemovedInsts ()
	Cleans up all instructions on the remove list. More...

void	dumpInsts ()
	Debug function to print all instructions on the list. More...

void	activityThisCycle ()
	Records that there was time buffer activity this cycle. More...

void	activateStage (const StageIdx idx)
	Changes a stage's status to active within the activity recorder. More...

void	deactivateStage (const StageIdx idx)
	Changes a stage's status to inactive within the activity recorder. More...

void	wakeCPU ()
	Wakes the CPU, rescheduling the CPU if it's not already active. More...

virtual void	wakeup (ThreadID tid) override

ThreadID	getFreeTid ()
	Gets a free thread id. More...

ThreadContext *	tcBase (ThreadID tid)
	Returns a pointer to a thread context. More...

Fault	read (RequestPtr &req, RequestPtr &sreqLow, RequestPtr &sreqHigh, int load_idx)
	CPU read function, forwards read to LSQ. More...

Fault	write (RequestPtr &req, RequestPtr &sreqLow, RequestPtr &sreqHigh, uint8_t *data, int store_idx)
	CPU write function, forwards write to LSQ. More...

MasterPort &	getInstPort () override
	Used by the fetch unit to get a hold of the instruction port. More...

MasterPort &	getDataPort () override
	Get the dcache port (used to find block size for translations). More...

Public Member Functions inherited from BaseO3CPU
	BaseO3CPU (BaseCPUParams *params)

void	regStats ()

Public Attributes
TheISA::TLB *	itb

TheISA::TLB *	dtb

Status	_status
	Overall CPU status. More...

ProbePointArg< PacketPtr > *	ppInstAccessComplete

ProbePointArg< std::pair < DynInstPtr, PacketPtr > > *	ppDataAccessComplete

int	instcount
	Count of total number of dynamic instructions in flight. More...

std::list< DynInstPtr >	instList
	List of all the instructions in flight. More...

std::queue< ListIt >	removeList
	List of all the instructions that will be removed at the end of this cycle. More...

bool	removeInstsThisCycle
	Records if instructions need to be removed this cycle due to being retired or squashed. More...

TimeBuffer< TimeStruct >	timeBuffer
	The main time buffer to do backwards communication. More...

TimeBuffer< FetchStruct >	fetchQueue
	The fetch stage's instruction queue. More...

TimeBuffer< DecodeStruct >	decodeQueue
	The decode stage's instruction queue. More...

TimeBuffer< RenameStruct >	renameQueue
	The rename stage's instruction queue. More...

TimeBuffer< IEWStruct >	iewQueue
	The IEW stage's instruction queue. More...

InstSeqNum	globalSeqNum
	The global sequence number counter. More...

Checker< Impl > *	checker
	Pointer to the checker, which can dynamically verify instruction results at run time. More...

System *	system
	Pointer to the system. More...

std::vector< Thread * >	thread
	Pointers to all of the threads in the CPU. More...

std::list< int >	cpuWaitList
	Threads Scheduled to Enter CPU. More...

Cycles	lastRunningCycle
	The cycle that the CPU was last running, used for statistics. More...

Tick	lastActivatedCycle
	The cycle that the CPU was last activated by a new thread. More...

std::map< ThreadID, unsigned >	threadMap
	Mapping for system thread id to cpu id. More...

std::vector< ThreadID >	tids
	Available thread ids in the cpu. More...

Stats::Scalar	timesIdled
	Stat for total number of times the CPU is descheduled. More...

Stats::Scalar	idleCycles
	Stat for total number of cycles the CPU spends descheduled. More...

Stats::Scalar	quiesceCycles
	Stat for total number of cycles the CPU spends descheduled due to a quiesce operation or waiting for an interrupt. More...

Stats::Vector	committedInsts
	Stat for the number of committed instructions per thread. More...

Stats::Vector	committedOps
	Stat for the number of committed ops (including micro ops) per thread. More...

Stats::Formula	cpi
	Stat for the CPI per thread. More...

Stats::Formula	totalCpi
	Stat for the total CPI. More...

Stats::Formula	ipc
	Stat for the IPC per thread. More...

Stats::Formula	totalIpc
	Stat for the total IPC. More...

Stats::Scalar	intRegfileReads

Stats::Scalar	intRegfileWrites

Stats::Scalar	fpRegfileReads

Stats::Scalar	fpRegfileWrites

Stats::Scalar	ccRegfileReads

Stats::Scalar	ccRegfileWrites

Stats::Scalar	miscRegfileReads

Stats::Scalar	miscRegfileWrites

Protected Attributes
CPUPolicy::Fetch	fetch
	The fetch stage. More...

CPUPolicy::Decode	decode
	The decode stage. More...

CPUPolicy::Rename	rename
	The dispatch stage. More...

CPUPolicy::IEW	iew
	The issue/execute/writeback stages. More...

CPUPolicy::Commit	commit
	The commit stage. More...

PhysRegFile	regFile
	The register file. More...

CPUPolicy::FreeList	freeList
	The free list. More...

CPUPolicy::RenameMap	renameMap [Impl::MaxThreads]
	The rename map. More...

CPUPolicy::RenameMap	commitRenameMap [Impl::MaxThreads]
	The commit rename map. More...

CPUPolicy::ROB	rob
	The re-order buffer. More...

std::list< ThreadID >	activeThreads
	Active Threads List. More...

Scoreboard	scoreboard
	Integer Register Scoreboard. More...

std::vector< TheISA::ISA * >	isa

IcachePort	icachePort
	Instruction port. More...

DcachePort	dcachePort
	Data port. More...

Private Member Functions
void	scheduleTickEvent (Cycles delay)
	Schedule tick event, regardless of its current state. More...

void	unscheduleTickEvent ()
	Unschedule tick event, regardless of its current state. More...

bool	tryDrain ()
	Check if the pipeline has drained and signal drain done. More...

void	drainSanityCheck () const
	Perform sanity checks after a drain. More...

bool	isDrained () const
	Check if a system is in a drained state. More...

Private Attributes
TickEvent	tickEvent
	The tick event used for scheduling CPU ticks. More...

ActivityRecorder	activityRec
	The activity recorder; used to tell if the CPU has any activity remaining or if it can go to idle and deschedule itself. More...

Friends
class	O3ThreadContext< Impl >

Additional Inherited Members
Static Public Member Functions inherited from BaseCPU
static int	numSimulatedInsts ()

static int	numSimulatedOps ()

static void	wakeup (ThreadID tid)

Detailed Description

template<class Impl>
class FullO3CPU< Impl >

FullO3CPU class, has each of the stages (fetch through commit) within it, as well as all of the time buffers between stages.

The tick() function for the CPU is defined here.

Definition at line 98 of file cpu.hh.

Member Typedef Documentation

template<class Impl>

typedef Impl::CPUPol FullO3CPU< Impl >::CPUPolicy

Definition at line 102 of file cpu.hh.

template<class Impl>

typedef CPUPolicy::DecodeStruct FullO3CPU< Impl >::DecodeStruct

Definition at line 592 of file cpu.hh.

template<class Impl>

typedef Impl::DynInstPtr FullO3CPU< Impl >::DynInstPtr

Definition at line 103 of file cpu.hh.

template<class Impl>

typedef CPUPolicy::FetchStruct FullO3CPU< Impl >::FetchStruct

Definition at line 590 of file cpu.hh.

template<class Impl>

typedef CPUPolicy::IEWStruct FullO3CPU< Impl >::IEWStruct

Definition at line 596 of file cpu.hh.

template<class Impl>

typedef O3ThreadState<Impl> FullO3CPU< Impl >::ImplState

Definition at line 106 of file cpu.hh.

template<class Impl>

typedef std::list<DynInstPtr>::iterator FullO3CPU< Impl >::ListIt

Definition at line 109 of file cpu.hh.

template<class Impl>

typedef Impl::O3CPU FullO3CPU< Impl >::O3CPU

Definition at line 104 of file cpu.hh.

template<class Impl>

typedef CPUPolicy::RenameStruct FullO3CPU< Impl >::RenameStruct

Definition at line 594 of file cpu.hh.

template<class Impl>

typedef O3ThreadState<Impl> FullO3CPU< Impl >::Thread

Definition at line 107 of file cpu.hh.

template<class Impl>

typedef CPUPolicy::TimeStruct FullO3CPU< Impl >::TimeStruct

Typedefs from the Impl to get the structs that each of the time buffers should use.

Definition at line 588 of file cpu.hh.

Member Enumeration Documentation

template<class Impl>

enum FullO3CPU::StageIdx

Enum to give each stage a specific index, so when calling activateStage() or deactivateStage(), they can specify which stage is being activated/deactivated.

Enumerator
FetchIdx
DecodeIdx
RenameIdx
IEWIdx
CommitIdx
NumStages

Definition at line 577 of file cpu.hh.

template<class Impl>

enum FullO3CPU::Status

Enumerator
Running
Idle
Halted
Blocked
SwitchedOut

Definition at line 114 of file cpu.hh.

Constructor & Destructor Documentation

template<class Impl >

FullO3CPU< Impl >::FullO3CPU ( DerivO3CPUParams * params )

Constructs a CPU with the given parameters.

Definition at line 159 of file cpu.cc.

template<class Impl >

FullO3CPU< Impl >::~FullO3CPU ( )

Destructor.

Definition at line 406 of file cpu.cc.

Member Function Documentation

template<class Impl >

void FullO3CPU< Impl >::activateContext ( ThreadID tid )

override

Add Thread to Active Threads List.

Definition at line 707 of file cpu.cc.

References curTick(), Drained, PseudoInst::quiesceCycles(), and Running.

template<class Impl>

void FullO3CPU< Impl >::activateStage ( const StageIdx idx )

inline

Changes a stage's status to active within the activity recorder.

Definition at line 625 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::activateThread ( ThreadID tid )

Add Thread to Active Threads List.

Definition at line 642 of file cpu.cc.

References DPRINTF.

template<class Impl>

void FullO3CPU< Impl >::activityThisCycle ( )

inline

Records that there was time buffer activity this cycle.

Definition at line 622 of file cpu.hh.

template<class Impl >

FullO3CPU< Impl >::ListIt FullO3CPU< Impl >::addInst ( DynInstPtr & inst )

Function to add instruction onto the head of the list of the instructions.

Used when new instructions are fetched.

Definition at line 1425 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::cleanUpRemovedInsts ( )

Cleans up all instructions on the remove list.

Definition at line 1565 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::commitDrained ( ThreadID tid )

Commit has reached a safe point to drain a thread.

Commit calls this method to inform the pipeline that it has reached a point where it is not executed microcode and is about to squash uncommitted instructions to fully drain the pipeline.

Definition at line 1125 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::deactivateStage ( const StageIdx idx )

inline

Changes a stage's status to inactive within the activity recorder.

Definition at line 629 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::deactivateThread ( ThreadID tid )

Remove Thread from Active Threads List.

Definition at line 660 of file cpu.cc.

References DPRINTF.

template<class Impl>

void FullO3CPU< Impl >::demapDataPage	(	Addr	vaddr,
		uint64_t	asn
	)

inline

Definition at line 286 of file cpu.hh.

template<class Impl>

void FullO3CPU< Impl >::demapInstPage	(	Addr	vaddr,
		uint64_t	asn
	)

inline

Definition at line 281 of file cpu.hh.

template<class Impl>

void FullO3CPU< Impl >::demapPage	(	Addr	vaddr,
		uint64_t	asn
	)

inline

Definition at line 275 of file cpu.hh.

template<class Impl >

DrainState FullO3CPU< Impl >::drain ( )

override

Starts draining the CPU's pipeline of all instructions in order to stop all memory accesses.

Definition at line 1009 of file cpu.cc.

References DPRINTF, Drained, Draining, ArmISA::i, and PseudoInst::wakeCPU().

template<class Impl >

void FullO3CPU< Impl >::drainResume ( )

override

Resumes execution after a drain.

Definition at line 1132 of file cpu.cc.

References ThreadContext::Active, DPRINTF, ArmISA::i, Running, and ArmISA::status.

template<class Impl >

void FullO3CPU< Impl >::drainSanityCheck ( ) const

private

Perform sanity checks after a drain.

This method is called from drain() when it has determined that the CPU is fully drained when gem5 is compiled with the NDEBUG macro undefined. The intention of this method is to do more extensive tests than the isDrained() method to weed out any draining bugs.

Definition at line 1074 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::dumpInsts ( )

Debug function to print all instructions on the list.

Definition at line 1591 of file cpu.cc.

References cprintf().

template<class Impl>

InstSeqNum FullO3CPU< Impl >::getAndIncrementInstSeq ( )

inline

Get the current instruction sequence number, and increment it.

Definition at line 374 of file cpu.hh.

template<class Impl>

MasterPort& FullO3CPU< Impl >::getDataPort ( )

inlineoverride

Get the dcache port (used to find block size for translations).

Definition at line 697 of file cpu.hh.

template<class Impl >

ThreadID FullO3CPU< Impl >::getFreeTid ( )

Gets a free thread id.

Use if thread ids change across system.

Definition at line 1655 of file cpu.cc.

References InvalidThreadID.

template<class Impl>

MasterPort& FullO3CPU< Impl >::getInstPort ( )

inlineoverride

Used by the fetch unit to get a hold of the instruction port.

Definition at line 694 of file cpu.hh.

template<class Impl >

Fault FullO3CPU< Impl >::getInterrupts ( )

Returns the Fault for any valid interrupt.

Definition at line 941 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::halt ( )

inline

Halts the CPU.

Definition at line 392 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::haltContext ( ThreadID tid )

override

Remove Thread from Active Threads List && Remove Thread Context from CPU.

Definition at line 767 of file cpu.cc.

References DPRINTF.

template<class Impl >

Fault FullO3CPU< Impl >::hwrei ( ThreadID tid )

HW return from error interrupt.

Definition at line 900 of file cpu.cc.

References AlphaISA::MISCREG_LOCKFLAG, and NoFault.

template<class Impl >

void FullO3CPU< Impl >::init ( )

override

Initialize the CPU.

Definition at line 599 of file cpu.cc.

References ThreadContext::contextId(), FullSystem, Stats::init, and AlphaISA::initCPU().

template<class Impl >

void FullO3CPU< Impl >::insertThread ( ThreadID tid )

Setup CPU to insert a thread's context.

Definition at line 779 of file cpu.cc.

References ThreadContext::Active, AlphaISA::CC_Reg_Base, DPRINTF, AlphaISA::FP_Reg_Base, FullSystem, AlphaISA::NumCCRegs, AlphaISA::NumFloatRegs, AlphaISA::NumIntRegs, ThreadContext::pcState(), ThreadContext::setStatus(), and ArmISA::system.

template<class Impl >

Addr FullO3CPU< Impl >::instAddr ( ThreadID tid )

Reads the commit PC of a specific thread.

Definition at line 1396 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::instDone	(	ThreadID	tid,
		DynInstPtr &	inst
	)

Function to tell the CPU that an instruction has completed.

Definition at line 1434 of file cpu.cc.

References ArmISA::system.

template<class Impl >

bool FullO3CPU< Impl >::isDrained ( ) const

private

Check if a system is in a drained state.

Definition at line 1086 of file cpu.cc.

References DPRINTF.

template<class Impl>

bool FullO3CPU< Impl >::isDraining ( ) const

inline

Is the CPU draining?

Definition at line 338 of file cpu.hh.

template<class Impl >

MicroPC FullO3CPU< Impl >::microPC ( ThreadID tid )

Reads the commit micro PC of a specific thread.

Definition at line 1410 of file cpu.cc.

template<class Impl >

Addr FullO3CPU< Impl >::nextInstAddr ( ThreadID tid )

Reads the next PC of a specific thread.

Definition at line 1403 of file cpu.cc.

template<class Impl>

int FullO3CPU< Impl >::numActiveThreads ( )

inline

Returns the Number of Active Threads in the CPU.

Definition at line 302 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::pcState	(	const TheISA::PCState &	newPCState,
		ThreadID	tid
	)

Sets the commit PC state of a specific thread.

Definition at line 1389 of file cpu.cc.

template<class Impl >

TheISA::PCState FullO3CPU< Impl >::pcState ( ThreadID tid )

Reads the commit PC state of a specific thread.

Definition at line 1382 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::processInterrupts ( const Fault & interrupt )

Processes any an interrupt fault.

Definition at line 949 of file cpu.cc.

References DPRINTF, and NoFault.

template<class Impl>

Fault FullO3CPU< Impl >::read	(	RequestPtr &	req,
		RequestPtr &	sreqLow,
		RequestPtr &	sreqHigh,
		int	load_idx
	)

inline

CPU read function, forwards read to LSQ.

Definition at line 679 of file cpu.hh.

template<class Impl >

CCReg FullO3CPU< Impl >::readArchCCReg	(	int	reg_idx,
		ThreadID	tid
	)

Definition at line 1332 of file cpu.cc.

template<class Impl >

float FullO3CPU< Impl >::readArchFloatReg	(	int	reg_idx,
		ThreadID	tid
	)

Definition at line 1312 of file cpu.cc.

template<class Impl >

uint64_t FullO3CPU< Impl >::readArchFloatRegInt	(	int	reg_idx,
		ThreadID	tid
	)

Definition at line 1322 of file cpu.cc.

template<class Impl >

uint64_t FullO3CPU< Impl >::readArchIntReg	(	int	reg_idx,
		ThreadID	tid
	)

Definition at line 1302 of file cpu.cc.

template<class Impl >

CCReg FullO3CPU< Impl >::readCCReg ( int reg_idx )

Definition at line 1262 of file cpu.cc.

template<class Impl >

FloatReg FullO3CPU< Impl >::readFloatReg ( int reg_idx )

Definition at line 1246 of file cpu.cc.

template<class Impl >

FloatRegBits FullO3CPU< Impl >::readFloatRegBits ( int reg_idx )

Definition at line 1254 of file cpu.cc.

template<class Impl >

uint64_t FullO3CPU< Impl >::readIntReg ( int reg_idx )

Definition at line 1238 of file cpu.cc.

template<class Impl >

TheISA::MiscReg FullO3CPU< Impl >::readMiscReg	(	int	misc_reg,
		ThreadID	tid
	)

Reads a misc.

register, including any side effects the read might have as defined by the architecture.

Definition at line 1213 of file cpu.cc.

template<class Impl >

TheISA::MiscReg FullO3CPU< Impl >::readMiscRegNoEffect	(	int	misc_reg,
		ThreadID	tid
	)		const

Register accessors.

Index refers to the physical register index. Reads a miscellaneous register.

Definition at line 1206 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::regProbePoints ( )

override

Register probe points.

Definition at line 412 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::regStats ( )

override

Registers statistics.

Definition at line 427 of file cpu.cc.

References name(), PseudoInst::quiesceCycles(), BaseO3CPU::regStats(), Stats::sum(), and Stats::total.

template<class Impl >

void FullO3CPU< Impl >::removeFrontInst ( DynInstPtr & inst )

Remove an instruction from the front end of the list.

There's no restriction on location of the instruction.

Definition at line 1456 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::removeInstsNotInROB ( ThreadID tid )

Remove all instructions that are not currently in the ROB.

There's also an option to not squash delay slot instructions.

Definition at line 1470 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::removeInstsUntil	(	const InstSeqNum &	seq_num,
		ThreadID	tid
	)

Remove all instructions younger than the given sequence number.

Definition at line 1515 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::removeThread ( ThreadID tid )

Remove all of a thread's context from CPU.

Definition at line 834 of file cpu.cc.

References AlphaISA::CC_Reg_Base, DPRINTF, AlphaISA::FP_Reg_Base, AlphaISA::NumCCRegs, AlphaISA::NumFloatRegs, and AlphaISA::NumIntRegs.

template<class Impl>

void FullO3CPU< Impl >::scheduleTickEvent ( Cycles delay )

inlineprivate

Schedule tick event, regardless of its current state.

Definition at line 218 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::serializeThread	(	CheckpointOut &	cp,
		ThreadID	tid
	)		const

override

Definition at line 995 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::setArchCCReg	(	int	reg_idx,
		TheISA::CCReg	val,
		ThreadID	tid
	)

Definition at line 1372 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setArchFloatReg	(	int	reg_idx,
		float	val,
		ThreadID	tid
	)

Definition at line 1352 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setArchFloatRegInt	(	int	reg_idx,
		uint64_t	val,
		ThreadID	tid
	)

Definition at line 1362 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setArchIntReg	(	int	reg_idx,
		uint64_t	val,
		ThreadID	tid
	)

Architectural register accessors.

Looks up in the commit rename table to obtain the true physical index of the architected register first, then accesses that physical register.

Definition at line 1342 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::setCCReg	(	int	reg_idx,
		TheISA::CCReg	val
	)

Definition at line 1294 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::setFloatReg	(	int	reg_idx,
		TheISA::FloatReg	val
	)

Definition at line 1278 of file cpu.cc.

template<class Impl>

void FullO3CPU< Impl >::setFloatRegBits	(	int	reg_idx,
		TheISA::FloatRegBits	val
	)

Definition at line 1286 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setIntReg	(	int	reg_idx,
		uint64_t	val
	)

Definition at line 1270 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setMiscReg	(	int	misc_reg,
		const TheISA::MiscReg &	val,
		ThreadID	tid
	)

Sets a misc.

register, including any side effects the write might have as defined by the architecture.

Definition at line 1229 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::setMiscRegNoEffect	(	int	misc_reg,
		const TheISA::MiscReg &	val,
		ThreadID	tid
	)

Sets a miscellaneous register.

Definition at line 1221 of file cpu.cc.

template<class Impl >

bool FullO3CPU< Impl >::simPalCheck	(	int	palFunc,
		ThreadID	tid
	)

Definition at line 915 of file cpu.cc.

References PAL::bpt, PAL::bugchk, exitSimLoop(), PAL::halt, MipsISA::halt, System::numSystemsRunning, and ArmISA::system.

template<class Impl >

void FullO3CPU< Impl >::squashFromTC ( ThreadID tid )

Initiates a squash of all in-flight instructions for a given thread.

The source of the squash is an external update of state through the TC.

Definition at line 1417 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::squashInstIt	(	const ListIt &	instIt,
		ThreadID	tid
	)

inline

Removes the instruction pointed to by the iterator.

Definition at line 1544 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::startup ( )

override

Definition at line 627 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::suspendContext ( ThreadID tid )

override

Remove Thread from Active Threads List.

Definition at line 746 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::switchOut ( )

override

Switches out this CPU.

Definition at line 1159 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::syscall	(	int64_t	callnum,
		ThreadID	tid,
		Fault *	fault
	)

Executes a syscall.

Todo:: : Determine if this needs to be virtual.

Definition at line 975 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::takeOverFrom ( BaseCPU * oldCPU )

override

Takes over from another CPU.

Definition at line 1174 of file cpu.cc.

References FullO3CPU< Impl >::globalSeqNum, and takeOverFrom().

template<class Impl>

ThreadContext* FullO3CPU< Impl >::tcBase ( ThreadID tid )

inline

Returns a pointer to a thread context.

Definition at line 643 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::tick ( )

Ticks CPU, calling tick() on each stage, and checking the overall activity to see if the CPU should deschedule itself.

Definition at line 540 of file cpu.cc.

References DPRINTF, Drained, and FullSystem.

template<class Impl >

Counter FullO3CPU< Impl >::totalInsts ( ) const

override

Count the Total Instructions Committed in the CPU.

Definition at line 681 of file cpu.cc.

References ArmISA::i, X86ISA::size(), and Stats::total.

template<class Impl >

Counter FullO3CPU< Impl >::totalOps ( ) const

override

Count the Total Ops (including micro ops) committed in the CPU.

Definition at line 694 of file cpu.cc.

References ArmISA::i, X86ISA::size(), and Stats::total.

template<class Impl >

void FullO3CPU< Impl >::trap	(	const Fault &	fault,
		ThreadID	tid,
		const StaticInstPtr &	inst
	)

Traps to handle given fault.

Definition at line 966 of file cpu.cc.

template<class Impl >

bool FullO3CPU< Impl >::tryDrain ( )

private

Check if the pipeline has drained and signal drain done.

This method checks if a drain has been requested and if the CPU has drained successfully (i.e., there are no instructions in the pipeline). If the CPU has drained, it deschedules the tick event and signals the drain manager.

Returns: False if a drain hasn't been requested or the CPU hasn't drained, true otherwise.

Definition at line 1058 of file cpu.cc.

References DPRINTF, and Draining.

template<class Impl>

void FullO3CPU< Impl >::unscheduleTickEvent ( )

inlineprivate

Unschedule tick event, regardless of its current state.

Definition at line 227 of file cpu.hh.

template<class Impl >

void FullO3CPU< Impl >::unserializeThread	(	CheckpointIn &	cp,
		ThreadID	tid
	)

override

Definition at line 1002 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::updateThreadPriority ( )

Update The Order In Which We Process Threads.

Definition at line 1669 of file cpu.cc.

template<class Impl >

void FullO3CPU< Impl >::verifyMemoryMode ( ) const

override

Definition at line 1196 of file cpu.cc.

References fatal, and ArmISA::system.

template<class Impl >

void FullO3CPU< Impl >::wakeCPU ( )

Wakes the CPU, rescheduling the CPU if it's not already active.

Definition at line 1619 of file cpu.cc.

References DPRINTF.

template<class Impl >

void FullO3CPU< Impl >::wakeup ( ThreadID tid )

overridevirtual

Definition at line 1642 of file cpu.cc.

References DPRINTF, ArmISA::status, ThreadContext::Suspended, and PseudoInst::wakeCPU().

template<class Impl>

Fault FullO3CPU< Impl >::write	(	RequestPtr &	req,
		RequestPtr &	sreqLow,
		RequestPtr &	sreqHigh,
		uint8_t *	data,
		int	store_idx
	)

inline

CPU write function, forwards write to LSQ.

Definition at line 686 of file cpu.hh.

Friends And Related Function Documentation

template<class Impl>

friend class O3ThreadContext< Impl >

friend

Definition at line 111 of file cpu.hh.

Member Data Documentation

template<class Impl>

Status FullO3CPU< Impl >::_status

Overall CPU status.

Definition at line 126 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

std::list<ThreadID> FullO3CPU< Impl >::activeThreads

protected

Active Threads List.

Definition at line 559 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), and FullO3CPU< O3CPUImpl >::numActiveThreads().

template<class Impl>

ActivityRecorder FullO3CPU< Impl >::activityRec

private

The activity recorder; used to tell if the CPU has any activity remaining or if it can go to idle and deschedule itself.

Definition at line 618 of file cpu.hh.

Referenced by FullO3CPU< O3CPUImpl >::activateStage(), FullO3CPU< O3CPUImpl >::activityThisCycle(), and FullO3CPU< O3CPUImpl >::deactivateStage().

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::ccRegfileReads

Definition at line 726 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::ccRegfileWrites

Definition at line 727 of file cpu.hh.

template<class Impl>

Checker<Impl>* FullO3CPU< Impl >::checker

Pointer to the checker, which can dynamically verify instruction results at run time.

This can be set to NULL if it is not being used.

Definition at line 655 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

CPUPolicy::Commit FullO3CPU< Impl >::commit

protected

The commit stage.

Definition at line 541 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

CPUPolicy::RenameMap FullO3CPU< Impl >::commitRenameMap[Impl::MaxThreads]

protected

The commit rename map.

Definition at line 553 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

Stats::Vector FullO3CPU< Impl >::committedInsts

Stat for the number of committed instructions per thread.

Definition at line 707 of file cpu.hh.

template<class Impl>

Stats::Vector FullO3CPU< Impl >::committedOps

Stat for the number of committed ops (including micro ops) per thread.

Definition at line 709 of file cpu.hh.

template<class Impl>

Stats::Formula FullO3CPU< Impl >::cpi

Stat for the CPI per thread.

Definition at line 711 of file cpu.hh.

template<class Impl>

std::list<int> FullO3CPU< Impl >::cpuWaitList

Threads Scheduled to Enter CPU.

Definition at line 664 of file cpu.hh.

template<class Impl>

DcachePort FullO3CPU< Impl >::dcachePort

protected

Data port.

Note that it has to appear after the iew stages

Definition at line 570 of file cpu.hh.

Referenced by FullO3CPU< O3CPUImpl >::getDataPort().

template<class Impl>

CPUPolicy::Decode FullO3CPU< Impl >::decode

protected

The decode stage.

Definition at line 532 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

TimeBuffer<DecodeStruct> FullO3CPU< Impl >::decodeQueue

The decode stage's instruction queue.

Definition at line 605 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

TheISA::TLB* FullO3CPU< Impl >::dtb

Definition at line 123 of file cpu.hh.

Referenced by FullO3CPU< O3CPUImpl >::demapDataPage(), and FullO3CPU< O3CPUImpl >::demapPage().

template<class Impl>

CPUPolicy::Fetch FullO3CPU< Impl >::fetch

protected

The fetch stage.

Definition at line 529 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), and FullO3CPU< Impl >::IcachePort::recvReqRetry().

template<class Impl>

TimeBuffer<FetchStruct> FullO3CPU< Impl >::fetchQueue

The fetch stage's instruction queue.

Definition at line 602 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::fpRegfileReads

Definition at line 723 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::fpRegfileWrites

Definition at line 724 of file cpu.hh.

template<class Impl>

CPUPolicy::FreeList FullO3CPU< Impl >::freeList

protected

The free list.

Definition at line 547 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

InstSeqNum FullO3CPU< Impl >::globalSeqNum

The global sequence number counter.

Definition at line 649 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), FullO3CPU< O3CPUImpl >::getAndIncrementInstSeq(), and FullO3CPU< Impl >::takeOverFrom().

template<class Impl>

IcachePort FullO3CPU< Impl >::icachePort

protected

Instruction port.

Note that it has to appear after the fetch stage.

Definition at line 567 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), and FullO3CPU< O3CPUImpl >::getInstPort().

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::idleCycles

Stat for total number of cycles the CPU spends descheduled.

Definition at line 702 of file cpu.hh.

template<class Impl>

CPUPolicy::IEW FullO3CPU< Impl >::iew

protected

The issue/execute/writeback stages.

Definition at line 538 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), FullO3CPU< O3CPUImpl >::read(), and FullO3CPU< O3CPUImpl >::write().

template<class Impl>

TimeBuffer<IEWStruct> FullO3CPU< Impl >::iewQueue

The IEW stage's instruction queue.

Definition at line 611 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

int FullO3CPU< Impl >::instcount

Count of total number of dynamic instructions in flight.

Definition at line 504 of file cpu.hh.

template<class Impl>

std::list<DynInstPtr> FullO3CPU< Impl >::instList

List of all the instructions in flight.

Definition at line 508 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::intRegfileReads

Definition at line 720 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::intRegfileWrites

Definition at line 721 of file cpu.hh.

template<class Impl>

Stats::Formula FullO3CPU< Impl >::ipc

Stat for the IPC per thread.

Definition at line 715 of file cpu.hh.

template<class Impl>

std::vector<TheISA::ISA *> FullO3CPU< Impl >::isa

protected

Definition at line 564 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

TheISA::TLB* FullO3CPU< Impl >::itb

Definition at line 122 of file cpu.hh.

Referenced by FullO3CPU< O3CPUImpl >::demapInstPage(), and FullO3CPU< O3CPUImpl >::demapPage().

template<class Impl>

Tick FullO3CPU< Impl >::lastActivatedCycle

The cycle that the CPU was last activated by a new thread.

Definition at line 670 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

Cycles FullO3CPU< Impl >::lastRunningCycle

The cycle that the CPU was last running, used for statistics.

Definition at line 667 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::miscRegfileReads

Definition at line 729 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::miscRegfileWrites

Definition at line 730 of file cpu.hh.

template<class Impl>

ProbePointArg<std::pair<DynInstPtr, PacketPtr> >* FullO3CPU< Impl >::ppDataAccessComplete

Definition at line 270 of file cpu.hh.

template<class Impl>

ProbePointArg<PacketPtr>* FullO3CPU< Impl >::ppInstAccessComplete

Definition at line 269 of file cpu.hh.

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::quiesceCycles

Stat for total number of cycles the CPU spends descheduled due to a quiesce operation or waiting for an interrupt.

Definition at line 705 of file cpu.hh.

template<class Impl>

PhysRegFile FullO3CPU< Impl >::regFile

protected

The register file.

Definition at line 544 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

bool FullO3CPU< Impl >::removeInstsThisCycle

Records if instructions need to be removed this cycle due to being retired or squashed.

Definition at line 525 of file cpu.hh.

template<class Impl>

std::queue<ListIt> FullO3CPU< Impl >::removeList

List of all the instructions that will be removed at the end of this cycle.

Definition at line 513 of file cpu.hh.

template<class Impl>

CPUPolicy::Rename FullO3CPU< Impl >::rename

protected

The dispatch stage.

Definition at line 535 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

CPUPolicy::RenameMap FullO3CPU< Impl >::renameMap[Impl::MaxThreads]

protected

The rename map.

Definition at line 550 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

TimeBuffer<RenameStruct> FullO3CPU< Impl >::renameQueue

The rename stage's instruction queue.

Definition at line 608 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

CPUPolicy::ROB FullO3CPU< Impl >::rob

protected

The re-order buffer.

Definition at line 556 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

Scoreboard FullO3CPU< Impl >::scoreboard

protected

Integer Register Scoreboard.

Definition at line 562 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

System* FullO3CPU< Impl >::system

Pointer to the system.

Definition at line 658 of file cpu.hh.

template<class Impl>

std::vector<Thread *> FullO3CPU< Impl >::thread

Pointers to all of the threads in the CPU.

Definition at line 661 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU(), and FullO3CPU< O3CPUImpl >::tcBase().

template<class Impl>

std::map<ThreadID, unsigned> FullO3CPU< Impl >::threadMap

Mapping for system thread id to cpu id.

Definition at line 673 of file cpu.hh.

template<class Impl>

TickEvent FullO3CPU< Impl >::tickEvent

private

The tick event used for scheduling CPU ticks.

Definition at line 215 of file cpu.hh.

Referenced by FullO3CPU< O3CPUImpl >::scheduleTickEvent(), and FullO3CPU< O3CPUImpl >::unscheduleTickEvent().

template<class Impl>

std::vector<ThreadID> FullO3CPU< Impl >::tids

Available thread ids in the cpu.

Definition at line 676 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

TimeBuffer<TimeStruct> FullO3CPU< Impl >::timeBuffer

The main time buffer to do backwards communication.

Definition at line 599 of file cpu.hh.

Referenced by FullO3CPU< Impl >::FullO3CPU().

template<class Impl>

Stats::Scalar FullO3CPU< Impl >::timesIdled

Stat for total number of times the CPU is descheduled.

Definition at line 700 of file cpu.hh.

template<class Impl>

Stats::Formula FullO3CPU< Impl >::totalCpi

Stat for the total CPI.

Definition at line 713 of file cpu.hh.

template<class Impl>

Stats::Formula FullO3CPU< Impl >::totalIpc

Stat for the total IPC.

Definition at line 717 of file cpu.hh.

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

cpu/o3/cpu.hh
cpu/o3/cpu.cc

Classes

Public Types

Public Member Functions

Public Attributes

Protected Attributes

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

template<class Impl> class FullO3CPU< Impl >

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation

template<class Impl>
class FullO3CPU< Impl >