Scoreboard Class Reference

Implements a simple scoreboard to track which registers are ready. More...

#include <scoreboard.hh>

Public Member Functions
	Scoreboard (const std::string &_my_name, unsigned _numPhysicalRegs)
	Constructs a scoreboard. More...
	~Scoreboard ()
	Destructor. More...
std::string	name () const
	Returns the name of the scoreboard. More...
bool	getReg (PhysRegIdPtr phys_reg) const
	Checks if the register is ready. More...
void	setReg (PhysRegIdPtr phys_reg)
	Sets the register as ready. More...
void	unsetReg (PhysRegIdPtr phys_reg)
	Sets the register as not ready. More...

Private Attributes
const std::string	_name
	The object name, for DPRINTF. More...
std::vector< bool >	regScoreBoard
	Scoreboard of physical integer registers, saying whether or not they are ready. More...
unsigned M5_CLASS_VAR_USED	numPhysRegs
	The number of actual physical registers. More...

Detailed Description

Implements a simple scoreboard to track which registers are ready.

This class operates on the unified physical register space, because the different classes of registers do not need to be distinguished. Registers being part of a fixed mapping are always considered ready.

Definition at line 48 of file scoreboard.hh.

Constructor & Destructor Documentation

Scoreboard()

Scoreboard::Scoreboard	(	const std::string &	_my_name,
		unsigned	_numPhysicalRegs
	)

Constructs a scoreboard.

Parameters

_numPhysicalRegs	Number of physical registers.
_numMiscRegs	Number of miscellaneous registers.

Definition at line 35 of file scoreboard.cc.

~Scoreboard()

Scoreboard::~Scoreboard ( )

inline

Destructor.

Definition at line 71 of file scoreboard.hh.

Member Function Documentation

getReg()

bool Scoreboard::getReg ( PhysRegIdPtr  phys_reg ) const

inline

Checks if the register is ready.

Definition at line 77 of file scoreboard.hh.

References PhysRegId::flatIndex(), PhysRegId::isFixedMapping(), PhysRegId::isZeroReg(), numPhysRegs, and regScoreBoard.

Referenced by DefaultRename< Impl >::renameSrcRegs().

name()

std::string Scoreboard::name ( ) const

inline

Returns the name of the scoreboard.

Definition at line 74 of file scoreboard.hh.

References _name.

setReg()

void Scoreboard::setReg ( PhysRegIdPtr  phys_reg )

inline

Sets the register as ready.

Definition at line 95 of file scoreboard.hh.

References PhysRegId::className(), DPRINTF, PhysRegId::flatIndex(), PhysRegId::index(), PhysRegId::isFixedMapping(), numPhysRegs, and regScoreBoard.

unsetReg()

void Scoreboard::unsetReg ( PhysRegIdPtr  phys_reg )

inline

Sets the register as not ready.

Definition at line 112 of file scoreboard.hh.

References PhysRegId::flatIndex(), PhysRegId::isFixedMapping(), PhysRegId::isZeroReg(), numPhysRegs, and regScoreBoard.

Referenced by DefaultRename< Impl >::renameDestRegs().

Member Data Documentation

_name

const std::string Scoreboard::_name

private

The object name, for DPRINTF.

We have to declare this explicitly because Scoreboard is not a SimObject.

Definition at line 53 of file scoreboard.hh.

Referenced by name().

numPhysRegs

unsigned M5_CLASS_VAR_USED Scoreboard::numPhysRegs

private

The number of actual physical registers.

Definition at line 60 of file scoreboard.hh.

Referenced by getReg(), setReg(), and unsetReg().

regScoreBoard

std::vector<bool> Scoreboard::regScoreBoard

private

Scoreboard of physical integer registers, saying whether or not they are ready.

Definition at line 57 of file scoreboard.hh.

Referenced by getReg(), setReg(), and unsetReg().

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

• cpu/o3/scoreboard.hh
• cpu/o3/scoreboard.cc