Simple physical register file class. More...

#include <regfile.hh>

Public Types
using	IdRange = std::pair< PhysIds::iterator, PhysIds::iterator >

Public Member Functions
	PhysRegFile (unsigned _numPhysicalIntRegs, unsigned _numPhysicalFloatRegs, unsigned _numPhysicalVecRegs, unsigned _numPhysicalVecPredRegs, unsigned _numPhysicalCCRegs, const BaseISA::RegClasses &regClasses, VecMode vmode)
	Constructs a physical register file with the specified amount of integer and floating point registers. More...

	~PhysRegFile ()
	Destructor to free resources. More...

void	initFreeList (UnifiedFreeList *freeList)
	Initialize the free list. More...

unsigned	numIntPhysRegs () const

unsigned	numFloatPhysRegs () const

unsigned	numVecPhysRegs () const

unsigned	numPredPhysRegs () const

unsigned	numVecElemPhysRegs () const

unsigned	numCCPhysRegs () const

unsigned	totalNumPhysRegs () const

PhysRegIdPtr	getMiscRegId (RegIndex reg_idx)
	Gets a misc register PhysRegIdPtr. More...

RegVal	readIntReg (PhysRegIdPtr phys_reg) const
	Reads an integer register. More...

RegVal	readFloatReg (PhysRegIdPtr phys_reg) const

const TheISA::VecRegContainer &	readVecReg (PhysRegIdPtr phys_reg) const
	Reads a vector register. More...

TheISA::VecRegContainer &	getWritableVecReg (PhysRegIdPtr phys_reg)
	Reads a vector register for modification. More...

const TheISA::VecElem &	readVecElem (PhysRegIdPtr phys_reg) const
	Reads a vector element. More...

const TheISA::VecPredRegContainer &	readVecPredReg (PhysRegIdPtr phys_reg) const
	Reads a predicate register. More...

TheISA::VecPredRegContainer &	getWritableVecPredReg (PhysRegIdPtr phys_reg)

RegVal	readCCReg (PhysRegIdPtr phys_reg)
	Reads a condition-code register. More...

void	setIntReg (PhysRegIdPtr phys_reg, RegVal val)
	Sets an integer register to the given value. More...

void	setFloatReg (PhysRegIdPtr phys_reg, RegVal val)

void	setVecReg (PhysRegIdPtr phys_reg, const TheISA::VecRegContainer &val)
	Sets a vector register to the given value. More...

void	setVecElem (PhysRegIdPtr phys_reg, const TheISA::VecElem val)
	Sets a vector register to the given value. More...

void	setVecPredReg (PhysRegIdPtr phys_reg, const TheISA::VecPredRegContainer &val)
	Sets a predicate register to the given value. More...

void	setCCReg (PhysRegIdPtr phys_reg, RegVal val)
	Sets a condition-code register to the given value. More...

IdRange	getRegElemIds (PhysRegIdPtr reg)
	Get the PhysRegIds of the elems of a vector register. More...

IdRange	getRegIds (RegClass cls)
	Get the PhysRegIds of the elems of all vector registers. More...

PhysRegIdPtr	getTrueId (PhysRegIdPtr reg)
	Get the true physical register id. More...

Private Types
using	PhysIds = std::vector< PhysRegId >

using	VecMode = enums::VecRegRenameMode

Private Attributes
std::vector< RegVal >	intRegFile
	Integer register file. More...

std::vector< PhysRegId >	intRegIds

RegId	zeroReg

std::vector< RegVal >	floatRegFile
	Floating point register file. More...

std::vector< PhysRegId >	floatRegIds

std::vector< TheISA::VecRegContainer >	vectorRegFile
	Vector register file. More...

std::vector< PhysRegId >	vecRegIds

std::vector< PhysRegId >	vecElemIds

std::vector< TheISA::VecPredRegContainer >	vecPredRegFile
	Predicate register file. More...

std::vector< PhysRegId >	vecPredRegIds

std::vector< RegVal >	ccRegFile
	Condition-code register file. More...

std::vector< PhysRegId >	ccRegIds

std::vector< PhysRegId >	miscRegIds
	Misc Reg Ids. More...

unsigned	numPhysicalIntRegs
	Number of physical general purpose registers. More...

unsigned	numPhysicalFloatRegs
	Number of physical floating point registers. More...

unsigned	numPhysicalVecRegs
	Number of physical vector registers. More...

unsigned	numPhysicalVecElemRegs
	Number of physical vector element registers. More...

unsigned	numPhysicalVecPredRegs
	Number of physical predicate registers. More...

unsigned	numPhysicalCCRegs
	Number of physical CC registers. More...

unsigned	totalNumRegs
	Total number of physical registers. More...

VecMode	vecMode
	Mode in which vector registers are addressed. More...

Detailed Description

Simple physical register file class.

Definition at line 66 of file regfile.hh.

Member Typedef Documentation

◆ IdRange

using gem5::o3::PhysRegFile::IdRange = std::pair<PhysIds::iterator, PhysIds::iterator>

Definition at line 74 of file regfile.hh.

◆ PhysIds

using gem5::o3::PhysRegFile::PhysIds = std::vector<PhysRegId>

private

Definition at line 70 of file regfile.hh.

◆ VecMode

using gem5::o3::PhysRegFile::VecMode = enums::VecRegRenameMode

private

Definition at line 71 of file regfile.hh.

Constructor & Destructor Documentation

◆ PhysRegFile()

gem5::o3::PhysRegFile::PhysRegFile	(	unsigned	_numPhysicalIntRegs,
		unsigned	_numPhysicalFloatRegs,
		unsigned	_numPhysicalVecRegs,
		unsigned	_numPhysicalVecPredRegs,
		unsigned	_numPhysicalCCRegs,
		const BaseISA::RegClasses &	regClasses,
		VecMode	vmode
	)

Constructs a physical register file with the specified amount of integer and floating point registers.

Definition at line 54 of file regfile.cc.

References gem5::CCRegClass, ccRegIds, gem5::FloatRegClass, floatRegIds, gem5::IntRegClass, intRegIds, gem5::MiscRegClass, miscRegIds, numPhysicalCCRegs, numPhysicalFloatRegs, numPhysicalIntRegs, numPhysicalVecPredRegs, numPhysicalVecRegs, gem5::ArmISA::NumVecElemPerVecReg, gem5::VecElemClass, vecElemIds, gem5::VecPredRegClass, vecPredRegIds, gem5::VecRegClass, vecRegIds, vectorRegFile, and zeroReg.

◆ ~PhysRegFile()

gem5::o3::PhysRegFile::~PhysRegFile ( )

inline

Destructor to free resources.

Definition at line 154 of file regfile.hh.

Member Function Documentation

◆ getMiscRegId()

PhysRegIdPtr gem5::o3::PhysRegFile::getMiscRegId ( RegIndex reg_idx )

inline

Gets a misc register PhysRegIdPtr.

Definition at line 179 of file regfile.hh.

References miscRegIds.

Referenced by gem5::o3::UnifiedRenameMap::lookup().

◆ getRegElemIds()

PhysRegFile::IdRange gem5::o3::PhysRegFile::getRegElemIds ( PhysRegIdPtr reg )

Get the PhysRegIds of the elems of a vector register.

Auxiliary function to transition from Full vector mode to Elem mode.

Definition at line 189 of file regfile.cc.

References gem5::ArmISA::NumVecElemPerVecReg, panic_if, gem5::X86ISA::reg, vecElemIds, and gem5::VecRegClass.

Referenced by gem5::o3::UnifiedRenameMap::switchFreeList(), and gem5::o3::UnifiedRenameMap::switchMode().

◆ getRegIds()

PhysRegFile::IdRange gem5::o3::PhysRegFile::getRegIds ( RegClass cls )

Get the PhysRegIds of the elems of all vector registers.

Auxiliary function to transition from Full vector mode to Elem mode and to initialise the rename map.

Definition at line 200 of file regfile.cc.

References gem5::CCRegClass, ccRegIds, gem5::FloatRegClass, floatRegIds, gem5::IntRegClass, intRegIds, gem5::MiscRegClass, miscRegIds, gem5::VecElemClass, vecElemIds, gem5::VecPredRegClass, vecPredRegIds, gem5::VecRegClass, and vecRegIds.

Referenced by gem5::o3::UnifiedRenameMap::switchFreeList(), and gem5::o3::UnifiedRenameMap::switchMode().

◆ getTrueId()

PhysRegIdPtr gem5::o3::PhysRegFile::getTrueId ( PhysRegIdPtr reg )

Get the true physical register id.

As many parts work with PhysRegIdPtr, we need to be able to produce the pointer out of just class and register idx.

Definition at line 225 of file regfile.cc.

References gem5::ArmISA::NumVecElemPerVecReg, panic_if, gem5::X86ISA::reg, gem5::VecElemClass, vecElemIds, gem5::VecRegClass, and vecRegIds.

Referenced by gem5::o3::UnifiedRenameMap::switchMode().

◆ getWritableVecPredReg()

TheISA::VecPredRegContainer& gem5::o3::PhysRegFile::getWritableVecPredReg ( PhysRegIdPtr phys_reg )

inline

Definition at line 256 of file regfile.hh.

References readVecPredReg().

Referenced by gem5::o3::CPU::getWritableVecPredReg().

◆ getWritableVecReg()

TheISA::VecRegContainer& gem5::o3::PhysRegFile::getWritableVecReg ( PhysRegIdPtr phys_reg )

inline

Reads a vector register for modification.

Definition at line 222 of file regfile.hh.

References readVecReg().

Referenced by gem5::o3::CPU::getWritableVecReg().

◆ initFreeList()

void gem5::o3::PhysRegFile::initFreeList ( UnifiedFreeList * freeList )

Initialize the free list.

Definition at line 135 of file regfile.cc.

References gem5::o3::UnifiedFreeList::addRegs(), ccRegIds, floatRegIds, gem5::MipsISA::index, intRegIds, numPhysicalCCRegs, numPhysicalFloatRegs, numPhysicalIntRegs, numPhysicalVecPredRegs, numPhysicalVecRegs, gem5::ArmISA::NumVecElemPerVecReg, vecElemIds, vecMode, vecPredRegIds, and vecRegIds.

Referenced by gem5::o3::UnifiedFreeList::UnifiedFreeList().

◆ numCCPhysRegs()

unsigned gem5::o3::PhysRegFile::numCCPhysRegs ( ) const

inline

Returns: the number of condition-code physical registers.

Definition at line 173 of file regfile.hh.

References numPhysicalCCRegs.

◆ numFloatPhysRegs()

unsigned gem5::o3::PhysRegFile::numFloatPhysRegs ( ) const

inline

Returns: the number of floating-point physical registers.

Definition at line 163 of file regfile.hh.

References numPhysicalFloatRegs.

◆ numIntPhysRegs()

unsigned gem5::o3::PhysRegFile::numIntPhysRegs ( ) const

inline

Returns: the number of integer physical registers.

Definition at line 160 of file regfile.hh.

References numPhysicalIntRegs.

◆ numPredPhysRegs()

unsigned gem5::o3::PhysRegFile::numPredPhysRegs ( ) const

inline

Returns: the number of predicate physical registers.

Definition at line 167 of file regfile.hh.

References numPhysicalVecPredRegs.

◆ numVecElemPhysRegs()

unsigned gem5::o3::PhysRegFile::numVecElemPhysRegs ( ) const

inline

Returns: the number of vector physical registers.

Definition at line 170 of file regfile.hh.

References numPhysicalVecElemRegs.

Referenced by gem5::o3::UnifiedRenameMap::switchFreeList().

◆ numVecPhysRegs()

unsigned gem5::o3::PhysRegFile::numVecPhysRegs ( ) const

inline

Returns: the number of vector physical registers.

Definition at line 165 of file regfile.hh.

References numPhysicalVecRegs.

Referenced by gem5::o3::UnifiedRenameMap::switchFreeList().

◆ readCCReg()

RegVal gem5::o3::PhysRegFile::readCCReg ( PhysRegIdPtr phys_reg )

inline

Reads a condition-code register.

Definition at line 265 of file regfile.hh.

References gem5::CCRegClass, ccRegFile, DPRINTF, gem5::PhysRegId::index(), and gem5::PhysRegId::is().

Referenced by gem5::o3::CPU::readArchCCReg(), and gem5::o3::CPU::readCCReg().

◆ readFloatReg()

RegVal gem5::o3::PhysRegFile::readFloatReg ( PhysRegIdPtr phys_reg ) const

inline

Definition at line 195 of file regfile.hh.

References DPRINTF, gem5::FloatRegClass, floatRegFile, gem5::PhysRegId::index(), and gem5::PhysRegId::is().

Referenced by gem5::o3::CPU::readArchFloatReg(), and gem5::o3::CPU::readFloatReg().

◆ readIntReg()

RegVal gem5::o3::PhysRegFile::readIntReg ( PhysRegIdPtr phys_reg ) const

inline

Reads an integer register.

Definition at line 185 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::index(), gem5::IntRegClass, intRegFile, and gem5::PhysRegId::is().

Referenced by gem5::o3::CPU::readArchIntReg(), and gem5::o3::CPU::readIntReg().

◆ readVecElem()

const TheISA::VecElem& gem5::o3::PhysRegFile::readVecElem ( PhysRegIdPtr phys_reg ) const

inline

Reads a vector element.

Definition at line 230 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::elemIndex(), gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::X86ISA::val, gem5::VecElemClass, and vectorRegFile.

Referenced by gem5::o3::CPU::readVecElem(), and gem5::o3::UnifiedRenameMap::switchMode().

◆ readVecPredReg()

const TheISA::VecPredRegContainer& gem5::o3::PhysRegFile::readVecPredReg ( PhysRegIdPtr phys_reg ) const

inline

Reads a predicate register.

Definition at line 244 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::VecPredRegClass, and vecPredRegFile.

Referenced by getWritableVecPredReg(), and gem5::o3::CPU::readVecPredReg().

◆ readVecReg()

const TheISA::VecRegContainer& gem5::o3::PhysRegFile::readVecReg ( PhysRegIdPtr phys_reg ) const

inline

Reads a vector register.

Definition at line 209 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::VecRegClass, and vectorRegFile.

Referenced by getWritableVecReg(), and gem5::o3::CPU::readVecReg().

◆ setCCReg()

void gem5::o3::PhysRegFile::setCCReg	(	PhysRegIdPtr	phys_reg,
		RegVal	val
	)

inline

Sets a condition-code register to the given value.

Definition at line 340 of file regfile.hh.

References gem5::CCRegClass, ccRegFile, DPRINTF, gem5::PhysRegId::index(), gem5::PhysRegId::is(), and gem5::X86ISA::val.

Referenced by gem5::o3::CPU::setArchCCReg(), and gem5::o3::CPU::setCCReg().

◆ setFloatReg()

void gem5::o3::PhysRegFile::setFloatReg	(	PhysRegIdPtr	phys_reg,
		RegVal	val
	)

inline

Definition at line 290 of file regfile.hh.

References DPRINTF, gem5::FloatRegClass, floatRegFile, gem5::PhysRegId::index(), gem5::PhysRegId::is(), and gem5::X86ISA::val.

Referenced by gem5::o3::CPU::setArchFloatReg(), and gem5::o3::CPU::setFloatReg().

◆ setIntReg()

void gem5::o3::PhysRegFile::setIntReg	(	PhysRegIdPtr	phys_reg,
		RegVal	val
	)

inline

Sets an integer register to the given value.

Definition at line 278 of file regfile.hh.

References DPRINTF, gem5::RegId::index(), gem5::PhysRegId::index(), gem5::IntRegClass, intRegFile, gem5::PhysRegId::is(), gem5::X86ISA::val, and zeroReg.

Referenced by gem5::o3::CPU::setArchIntReg(), and gem5::o3::CPU::setIntReg().

◆ setVecElem()

void gem5::o3::PhysRegFile::setVecElem	(	PhysRegIdPtr	phys_reg,
		const TheISA::VecElem	val
	)

inline

Sets a vector register to the given value.

Definition at line 314 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::elemIndex(), gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::X86ISA::val, gem5::VecElemClass, and vectorRegFile.

Referenced by gem5::o3::CPU::setVecElem().

◆ setVecPredReg()

void gem5::o3::PhysRegFile::setVecPredReg	(	PhysRegIdPtr	phys_reg,
		const TheISA::VecPredRegContainer &	val
	)

inline

Sets a predicate register to the given value.

Definition at line 327 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::X86ISA::val, gem5::VecPredRegClass, and vecPredRegFile.

Referenced by gem5::o3::CPU::setVecPredReg().

◆ setVecReg()

void gem5::o3::PhysRegFile::setVecReg	(	PhysRegIdPtr	phys_reg,
		const TheISA::VecRegContainer &	val
	)

inline

Sets a vector register to the given value.

Definition at line 302 of file regfile.hh.

References DPRINTF, gem5::PhysRegId::index(), gem5::PhysRegId::is(), gem5::X86ISA::val, gem5::VecRegClass, and vectorRegFile.

Referenced by gem5::o3::CPU::setVecReg(), and gem5::o3::UnifiedRenameMap::switchMode().

◆ totalNumPhysRegs()

unsigned gem5::o3::PhysRegFile::totalNumPhysRegs ( ) const

inline

Returns: the total number of physical registers.

Definition at line 176 of file regfile.hh.

References totalNumRegs.

Member Data Documentation

◆ ccRegFile

std::vector<RegVal> gem5::o3::PhysRegFile::ccRegFile

private

Condition-code register file.

Definition at line 95 of file regfile.hh.

Referenced by readCCReg(), and setCCReg().

◆ ccRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::ccRegIds

private

Definition at line 96 of file regfile.hh.

Referenced by getRegIds(), initFreeList(), and PhysRegFile().

◆ floatRegFile

std::vector<RegVal> gem5::o3::PhysRegFile::floatRegFile

private

Floating point register file.

Definition at line 82 of file regfile.hh.

Referenced by readFloatReg(), and setFloatReg().

◆ floatRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::floatRegIds

private

Definition at line 83 of file regfile.hh.

Referenced by getRegIds(), initFreeList(), and PhysRegFile().

◆ intRegFile

std::vector<RegVal> gem5::o3::PhysRegFile::intRegFile

private

Integer register file.

Definition at line 77 of file regfile.hh.

Referenced by readIntReg(), and setIntReg().

◆ intRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::intRegIds

private

Definition at line 78 of file regfile.hh.

Referenced by getRegIds(), initFreeList(), and PhysRegFile().

◆ miscRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::miscRegIds

private

Misc Reg Ids.

Definition at line 99 of file regfile.hh.

Referenced by getMiscRegId(), getRegIds(), and PhysRegFile().

◆ numPhysicalCCRegs

unsigned gem5::o3::PhysRegFile::numPhysicalCCRegs

private

Number of physical CC registers.

Definition at line 129 of file regfile.hh.

Referenced by initFreeList(), numCCPhysRegs(), and PhysRegFile().

◆ numPhysicalFloatRegs

unsigned gem5::o3::PhysRegFile::numPhysicalFloatRegs

private

Number of physical floating point registers.

Definition at line 109 of file regfile.hh.

Referenced by initFreeList(), numFloatPhysRegs(), and PhysRegFile().

◆ numPhysicalIntRegs

unsigned gem5::o3::PhysRegFile::numPhysicalIntRegs

private

Number of physical general purpose registers.

Definition at line 104 of file regfile.hh.

Referenced by initFreeList(), numIntPhysRegs(), and PhysRegFile().

◆ numPhysicalVecElemRegs

unsigned gem5::o3::PhysRegFile::numPhysicalVecElemRegs

private

Number of physical vector element registers.

Definition at line 119 of file regfile.hh.

Referenced by numVecElemPhysRegs().

◆ numPhysicalVecPredRegs

unsigned gem5::o3::PhysRegFile::numPhysicalVecPredRegs

private

Number of physical predicate registers.

Definition at line 124 of file regfile.hh.

Referenced by initFreeList(), numPredPhysRegs(), and PhysRegFile().

◆ numPhysicalVecRegs

unsigned gem5::o3::PhysRegFile::numPhysicalVecRegs

private

Number of physical vector registers.

Definition at line 114 of file regfile.hh.

Referenced by initFreeList(), numVecPhysRegs(), and PhysRegFile().

◆ totalNumRegs

unsigned gem5::o3::PhysRegFile::totalNumRegs

private

Total number of physical registers.

Definition at line 132 of file regfile.hh.

Referenced by totalNumPhysRegs().

◆ vecElemIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::vecElemIds

private

Definition at line 88 of file regfile.hh.

Referenced by getRegElemIds(), getRegIds(), getTrueId(), initFreeList(), and PhysRegFile().

◆ vecMode

VecMode gem5::o3::PhysRegFile::vecMode

private

Mode in which vector registers are addressed.

Definition at line 135 of file regfile.hh.

Referenced by initFreeList().

◆ vecPredRegFile

std::vector<TheISA::VecPredRegContainer> gem5::o3::PhysRegFile::vecPredRegFile

private

Predicate register file.

Definition at line 91 of file regfile.hh.

Referenced by readVecPredReg(), and setVecPredReg().

◆ vecPredRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::vecPredRegIds

private

Definition at line 92 of file regfile.hh.

Referenced by getRegIds(), initFreeList(), and PhysRegFile().

◆ vecRegIds

std::vector<PhysRegId> gem5::o3::PhysRegFile::vecRegIds

private

Definition at line 87 of file regfile.hh.

Referenced by getRegIds(), getTrueId(), initFreeList(), and PhysRegFile().

◆ vectorRegFile

std::vector<TheISA::VecRegContainer> gem5::o3::PhysRegFile::vectorRegFile

private

Vector register file.

Definition at line 86 of file regfile.hh.

Referenced by PhysRegFile(), readVecElem(), readVecReg(), setVecElem(), and setVecReg().

◆ zeroReg

RegId gem5::o3::PhysRegFile::zeroReg

private

Definition at line 79 of file regfile.hh.

Referenced by PhysRegFile(), and setIntReg().

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

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

Public Types

Public Member Functions

Private Types

Private Attributes

Detailed Description

Member Typedef Documentation

◆ IdRange

◆ PhysIds

◆ VecMode

Constructor & Destructor Documentation

◆ PhysRegFile()

◆ ~PhysRegFile()

Member Function Documentation

◆ getMiscRegId()

◆ getRegElemIds()

◆ getRegIds()

◆ getTrueId()

◆ getWritableVecPredReg()

◆ getWritableVecReg()

◆ initFreeList()

◆ numCCPhysRegs()

◆ numFloatPhysRegs()

◆ numIntPhysRegs()

◆ numPredPhysRegs()

◆ numVecElemPhysRegs()

◆ numVecPhysRegs()

◆ readCCReg()

◆ readFloatReg()

◆ readIntReg()

◆ readVecElem()

◆ readVecPredReg()

◆ readVecReg()

◆ setCCReg()

◆ setFloatReg()

◆ setIntReg()

◆ setVecElem()

◆ setVecPredReg()

◆ setVecReg()

◆ totalNumPhysRegs()

Member Data Documentation

◆ ccRegFile

◆ ccRegIds

◆ floatRegFile

◆ floatRegIds

◆ intRegFile

◆ intRegIds

◆ miscRegIds

◆ numPhysicalCCRegs

◆ numPhysicalFloatRegs

◆ numPhysicalIntRegs

◆ numPhysicalVecElemRegs

◆ numPhysicalVecPredRegs

◆ numPhysicalVecRegs

◆ totalNumRegs

◆ vecElemIds

◆ vecMode

◆ vecPredRegFile

◆ vecPredRegIds

◆ vecRegIds

◆ vectorRegFile

◆ zeroReg