gem5::ArmISA::HTMCheckpoint Class Reference

#include <htm.hh>

Inheritance diagram for gem5::ArmISA::HTMCheckpoint:

Public Member Functions
	HTMCheckpoint ()
void	reset () override
	Resets the checkpoint once a transaction has completed.
void	save (ThreadContext *tc) override
	Every ISA implementing HTM support should override the save method.
void	restore (ThreadContext *tc, HtmFailureFaultCause cause) override
	Every ISA implementing HTM support should override the restore method.
void	destinationRegister (RegIndex dest)
void	cancelReason (uint16_t reason)
Public Member Functions inherited from gem5::BaseHTMCheckpoint
	BaseHTMCheckpoint ()
virtual	~BaseHTMCheckpoint ()
bool	valid () const
uint64_t	newHtmUid ()
	Generates a new HTM identifier (used when starting a new transaction)
uint64_t	getHtmUid () const
	Returns the current HTM identifier.
void	setHtmUid (uint64_t new_htm_uid)
	Sets the current HTM identifier.

Static Public Attributes
static const int	MAX_HTM_DEPTH = 255

Private Attributes
uint8_t	rt
Addr	nPc
std::array< RegVal, int_reg::NumArchRegs >	x
std::array< VecRegContainer, NumVecRegs >	z
std::array< VecPredRegContainer, NumVecRegs >	p
Addr	sp
uint16_t	tcreason
uint32_t	fpcr
uint32_t	fpsr
uint32_t	iccPmrEl1
uint8_t	nzcv
uint8_t	daif
PCState	pcstateckpt

Additional Inherited Members
Protected Attributes inherited from gem5::BaseHTMCheckpoint
bool	_valid

Detailed Description

Definition at line 58 of file htm.hh.

Constructor & Destructor Documentation

HTMCheckpoint()

gem5::ArmISA::HTMCheckpoint::HTMCheckpoint ( )

inline

Definition at line 61 of file htm.hh.

Member Function Documentation

cancelReason()

void gem5::ArmISA::HTMCheckpoint::cancelReason ( uint16_t reason )

inline

Definition at line 72 of file htm.hh.

References tcreason.

destinationRegister()

void gem5::ArmISA::HTMCheckpoint::destinationRegister ( RegIndex dest )

inline

Definition at line 71 of file htm.hh.

References rt.

reset()

void gem5::ArmISA::HTMCheckpoint::reset ( )

overridevirtual

Resets the checkpoint once a transaction has completed.

The method is bringing up the checkpoint to a known reset state so that it can be reused. ISA specific checkpoints inheriting from this class should override this method so that they can reset their own ISA specific state.

Reimplemented from gem5::BaseHTMCheckpoint.

Definition at line 48 of file htm.cc.

References daif, fpcr, fpsr, gem5::ArmISA::i, iccPmrEl1, nPc, gem5::ArmISA::NumVecPredRegs, gem5::ArmISA::NumVecRegs, nzcv, p, pcstateckpt, gem5::BaseHTMCheckpoint::reset(), rt, sp, tcreason, x, and z.

restore()

void gem5::ArmISA::HTMCheckpoint::restore ( ThreadContext * tc, HtmFailureFaultCause cause )

overridevirtual

Every ISA implementing HTM support should override the restore method.

This is called once a transaction gets aborted and the architectural state needs to be reverted. This will restore the checkpointed arch state.

Parameters

tc	thread context to be restored
cause	the reason why the transaction has been aborted

Reimplemented from gem5::BaseHTMCheckpoint.

Definition at line 95 of file htm.cc.

References gem5::bits(), gem5::ArmISA::daif, gem5::EXCEPTION, gem5::EXPLICIT, gem5::ArmISA::intRegClass, gem5::MEMORY, gem5::ArmISA::MISCREG_DAIF, gem5::ArmISA::MISCREG_FPCR, gem5::ArmISA::MISCREG_FPSR, gem5::ArmISA::MISCREG_NZCV, gem5::ArmISA::n, gem5::NEST, gem5::MipsISA::int_reg::NumArchRegs, gem5::ArmISA::NumVecPredRegs, gem5::ArmISA::NumVecRegs, gem5::OTHER, gem5::MipsISA::p, panic, gem5::ThreadContext::pcState(), gem5::replaceBits(), gem5::BaseHTMCheckpoint::restore(), gem5::ArmISA::rt, gem5::ThreadContext::setMiscReg(), gem5::ThreadContext::setReg(), gem5::SIZE, gem5::ArmISA::sp, gem5::ArmISA::int_reg::Spx, gem5::ArmISA::vecPredRegClass, gem5::ArmISA::vecRegClass, gem5::RiscvISA::x, and gem5::ArmISA::z.

save()

void gem5::ArmISA::HTMCheckpoint::save ( ThreadContext * tc )

overridevirtual

Every ISA implementing HTM support should override the save method.

This is called once a transaction starts and the architectural state needs to be saved. This will checkpoint the arch state.

Parameters

tc	thread context state to be saved

Reimplemented from gem5::BaseHTMCheckpoint.

Definition at line 72 of file htm.cc.

References gem5::PCStateBase::as(), gem5::ArmISA::daif, gem5::ThreadContext::getReg(), gem5::ArmISA::intRegClass, gem5::ArmISA::MISCREG_DAIF, gem5::ArmISA::MISCREG_FPCR, gem5::ArmISA::MISCREG_FPSR, gem5::ArmISA::MISCREG_NZCV, gem5::ArmISA::n, gem5::MipsISA::int_reg::NumArchRegs, gem5::ArmISA::NumVecPredRegs, gem5::ArmISA::NumVecRegs, gem5::MipsISA::p, gem5::ThreadContext::pcState(), gem5::ThreadContext::readMiscReg(), gem5::BaseHTMCheckpoint::save(), gem5::ArmISA::sp, gem5::ArmISA::int_reg::Spx, gem5::ArmISA::vecPredRegClass, gem5::ArmISA::vecRegClass, gem5::RiscvISA::x, and gem5::ArmISA::z.

Member Data Documentation

daif

uint8_t gem5::ArmISA::HTMCheckpoint::daif

private

Definition at line 86 of file htm.hh.

Referenced by reset().

fpcr

uint32_t gem5::ArmISA::HTMCheckpoint::fpcr

private

Definition at line 82 of file htm.hh.

Referenced by reset().

fpsr

uint32_t gem5::ArmISA::HTMCheckpoint::fpsr

private

Definition at line 83 of file htm.hh.

Referenced by reset().

iccPmrEl1

uint32_t gem5::ArmISA::HTMCheckpoint::iccPmrEl1

private

Definition at line 84 of file htm.hh.

Referenced by reset().

MAX_HTM_DEPTH

const int gem5::ArmISA::HTMCheckpoint::MAX_HTM_DEPTH = 255

static

Definition at line 65 of file htm.hh.

nPc

Addr gem5::ArmISA::HTMCheckpoint::nPc

private

Definition at line 76 of file htm.hh.

Referenced by reset().

nzcv

uint8_t gem5::ArmISA::HTMCheckpoint::nzcv

private

Definition at line 85 of file htm.hh.

Referenced by reset().

p

std::array<VecPredRegContainer, NumVecRegs> gem5::ArmISA::HTMCheckpoint::p

private

Definition at line 79 of file htm.hh.

Referenced by reset().

pcstateckpt

PCState gem5::ArmISA::HTMCheckpoint::pcstateckpt

private

Definition at line 87 of file htm.hh.

Referenced by reset().

rt

uint8_t gem5::ArmISA::HTMCheckpoint::rt

private

Definition at line 75 of file htm.hh.

Referenced by destinationRegister(), and reset().

sp

Addr gem5::ArmISA::HTMCheckpoint::sp

private

Definition at line 80 of file htm.hh.

Referenced by reset().

tcreason

uint16_t gem5::ArmISA::HTMCheckpoint::tcreason

private

Definition at line 81 of file htm.hh.

Referenced by cancelReason(), and reset().

x

std::array<RegVal, int_reg::NumArchRegs> gem5::ArmISA::HTMCheckpoint::x

private

Definition at line 77 of file htm.hh.

Referenced by reset().

z

std::array<VecRegContainer, NumVecRegs> gem5::ArmISA::HTMCheckpoint::z

private

Definition at line 78 of file htm.hh.

Referenced by reset().

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

• arch/arm/htm.hh
• arch/arm/htm.cc