The constructed pipeline. More...

#include <pipeline.hh>

Inheritance diagram for Minor::Pipeline:

Public Types
enum	StageId { CPUStageId = 0, Fetch1StageId, Fetch2StageId, DecodeStageId, ExecuteStageId, Num_StageId }
	Enumerated ids of the 'stages' for the activity recorder. More...

Public Member Functions
	Pipeline (MinorCPU &cpu_, MinorCPUParams &params)

void	wakeupFetch (ThreadID tid)
	Wake up the Fetch unit. More...

bool	drain ()
	Try to drain the CPU. More...

void	drainResume ()

bool	isDrained ()
	Test to see if the CPU is drained. More...

void	evaluate () override
	A custom evaluate allows report in the right place (between stages and pipeline advance) More...

void	countCycles (Cycles delta) override
	Callback to handle cycle statistics and probes. More...

void	minorTrace () const

MinorCPU::MinorCPUPort &	getInstPort ()
	Functions below here are BaseCPU operations passed on to pipeline stages. More...

MinorCPU::MinorCPUPort &	getDataPort ()
	Return the DcachePort belonging to Execute for the CPU. More...

MinorActivityRecorder *	getActivityRecorder ()
	To give the activity recorder to the CPU. More...

Public Member Functions inherited from Ticked
	Ticked (ClockedObject &object_, Stats::Scalar *imported_num_cycles=NULL, Event::Priority priority=Event::CPU_Tick_Pri)

virtual	~Ticked ()

void	regStats ()
	Register {num,ticks}Cycles if necessary. More...

void	start ()
	Start ticking. More...

Cycles	cyclesSinceLastStopped () const
	How long have we been stopped for? More...

void	resetLastStopped ()
	Reset stopped time to current time. More...

void	stop ()
	Cancel the next tick event and issue no more. More...

void	serialize (CheckpointOut &cp) const override
	Checkpoint lastStopped. More...

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

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 Attributes
bool	needToSignalDrained
	True after drain is called but draining isn't complete. More...

Protected Attributes
MinorCPU &	cpu

bool	allow_idling
	Allow cycles to be skipped when the pipeline is idle. More...

Latch< ForwardLineData >	f1ToF2

Latch< BranchData >	f2ToF1

Latch< ForwardInstData >	f2ToD

Latch< ForwardInstData >	dToE

Latch< BranchData >	eToF1

Execute	execute

Decode	decode

Fetch2	fetch2

Fetch1	fetch1

MinorActivityRecorder	activityRecorder
	Activity recording for the pipeline. More...

Protected Attributes inherited from Ticked
ClockedObject &	object
	ClockedObject who is responsible for this Ticked's actions/stats. More...

ClockEvent	event
	The single instance of ClockEvent used. More...

bool	running
	Have I been started? and am not stopped. More...

Cycles	lastStopped
	Time of last stop event to calculate run time. More...

Stats::Scalar &	numCycles
	Total number of cycles either ticked or spend stopped. More...

Stats::Scalar	tickCycles
	Number of cycles ticked. More...

Stats::Formula	idleCycles
	Number of cycles stopped. More...

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

static void	serializeAll (const std::string &cpt_dir)

static void	unserializeGlobals (CheckpointIn &cp)

Static Public Attributes inherited from Serializable
static int	ckptCount = 0

static int	ckptMaxCount = 0

static int	ckptPrevCount = -1

Detailed Description

The constructed pipeline.

Kept out of MinorCPU to keep the interface between the CPU and its grubby implementation details clean.

Definition at line 71 of file pipeline.hh.

Member Enumeration Documentation

enum Minor::Pipeline::StageId

Enumerated ids of the 'stages' for the activity recorder.

Enumerator
CPUStageId
Fetch1StageId
Fetch2StageId
DecodeStageId
ExecuteStageId
Num_StageId

Definition at line 97 of file pipeline.hh.

Constructor & Destructor Documentation

Minor::Pipeline::Pipeline	(	MinorCPU &	cpu_,
		MinorCPUParams &	params
	)

Definition at line 56 of file pipeline.cc.

References cpu, and fatal.

Member Function Documentation

void Minor::Pipeline::countCycles ( Cycles delta )

inlineoverridevirtual

Callback to handle cycle statistics and probes.

This callback is called at the beginning of a new cycle active cycle and when restarting the ticked object. The delta parameter indicates the number of cycles elapsed since the previous call is normally '1' unless the object has been stopped and restarted.

Parameters

delta Number of cycles since the previous call.

Reimplemented from Ticked.

Definition at line 129 of file pipeline.hh.

References cpu.

bool Minor::Pipeline::drain ( )

Try to drain the CPU.

Definition at line 197 of file pipeline.cc.

References DPRINTF, Minor::Execute::drain(), execute, isDrained(), and needToSignalDrained.

Referenced by MinorCPU::drain().

void Minor::Pipeline::drainResume ( )

Definition at line 213 of file pipeline.cc.