gem5::System Class Reference

#include <system.hh>

Inheritance diagram for gem5::System:

Classes
class	SystemPort
	Private class for the system port which is only used as a requestor for debug access and for non-structural entities that do not have a port of their own. More...
class	Threads

Public Member Functions
RequestPort &	getSystemPort ()
	Get a reference to the system port that can be used by non-structural simulation objects like processes or threads, or external entities like loaders and debuggers, etc, to access the memory system.
Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Additional function to return the Port of a memory object.
Addr	cacheLineSize () const
	Get the cache line size of the system.
bool	schedule (PCEvent *event) override
bool	remove (PCEvent *event) override
KvmVM *	getKvmVM () const
	Get a pointer to the Kernel Virtual Machine (KVM) SimObject, if present.
void	setKvmVM (KvmVM *const vm)
	Set the pointer to the Kernel Virtual Machine (KVM) SimObject.
memory::PhysicalMemory &	getPhysMem ()
	Get a pointer to access the physical memory of the system.
const memory::PhysicalMemory &	getPhysMem () const
Addr	memSize () const
	Amount of physical memory that exists.
bool	isMemAddr (Addr addr) const
	Check if a physical address is within a range of a memory that is part of the global address map.
void	addDeviceMemory (RequestorID requestorId, memory::AbstractMemory *deviceMemory)
	Add a physical memory range for a device.
bool	isDeviceMemAddr (const PacketPtr &pkt) const
	Similar to isMemAddr but for devices.
memory::AbstractMemory *	getDeviceMemory (const PacketPtr &pkt) const
	Return a pointer to the device memory.
AddrRangeList	getShadowRomRanges () const
ByteOrder	getGuestByteOrder () const
	Get the guest byte order.
ThermalModel *	getThermalModel () const
	The thermal model used for this system (if any).
RequestorID	getRequestorId (const SimObject *requestor, std::string subrequestor={})
	Request an id used to create a request object in the system.
RequestorID	getGlobalRequestorId (const std::string &requestor_name)
	Registers a GLOBAL RequestorID, which is a RequestorID not related to any particular SimObject; since no SimObject is passed, the requestor gets registered by providing the full requestor name.
std::string	getRequestorName (RequestorID requestor_id)
	Get the name of an object for a given request id.
RequestorID	lookupRequestorId (const SimObject *obj) const
	Looks up the RequestorID for a given SimObject returns an invalid RequestorID (invldRequestorId) if not found.
RequestorID	lookupRequestorId (const std::string &name) const
	Looks up the RequestorID for a given object name string returns an invalid RequestorID (invldRequestorId) if not found.
RequestorID	maxRequestors ()
	Get the number of requestors registered in the system.
void	regStats () override
	Callback to set stat parameters.
uint64_t	incWorkItemsBegin ()
	Called by pseudo_inst to track the number of work items started by this system.
uint64_t	incWorkItemsEnd ()
	Called by pseudo_inst to track the number of work items completed by this system.
int	markWorkItem (int index)
	Called by pseudo_inst to mark the cpus actively executing work items.
void	workItemBegin (uint32_t tid, uint32_t workid)
void	workItemEnd (uint32_t tid, uint32_t workid)
bool	trapToGdb (GDBSignal signal, ContextID ctx_id) const
	PARAMS (System)
	System (const Params &p)
	~System ()
const AddrRange &	m5opRange () const
	Range used by memory-mapped m5 pseudo-ops if enabled.
void	registerThreadContext (ThreadContext *tc)
void	replaceThreadContext (ThreadContext *tc, ContextID context_id)
void	serialize (CheckpointOut &cp) const override
	Serialize an object.
void	unserialize (CheckpointIn &cp) override
	Unserialize an object.
bool	isAtomicMode () const
	Is the system in atomic mode?
bool	isTimingMode () const
	Is the system in timing mode?
bool	bypassCaches () const
	Should caches be bypassed?
enums::MemoryMode	getMemoryMode () const
	Get the memory mode of the system.
void	setMemoryMode (enums::MemoryMode mode)
	Change the memory mode of the system.
Public Member Functions inherited from gem5::SimObject
const Params &	params () const
	SimObject (const Params &p)
virtual	~SimObject ()
virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected.
virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint.
virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint.
virtual void	regProbePoints ()
	Register probe points for this object.
virtual void	regProbeListeners ()
	Register probe listeners for this object.
ProbeManager *	getProbeManager ()
	Get the probe manager for this object.
virtual void	startup ()
	startup() is the final initialization call before simulation.
DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining.
virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes.
virtual void	memInvalidate ()
	Invalidate the contents of memory buffers.
Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const
void	schedule (Event &event, Tick when)
void	deschedule (Event &event)
void	reschedule (Event &event, Tick when, bool always=false)
void	schedule (Event *event, Tick when)
void	deschedule (Event *event)
void	reschedule (Event *event, Tick when, bool always=false)
void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers.
void	setCurTick (Tick newVal)
	EventManager (EventManager &em)
	Event manger manages events in the event queue.
	EventManager (EventManager *em)
	EventManager (EventQueue *eq)
Public Member Functions inherited from gem5::Serializable
	Serializable ()
virtual	~Serializable ()
void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.
void	serializeSection (CheckpointOut &cp, const std::string &name) const
void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.
void	unserializeSection (CheckpointIn &cp, const std::string &name)
Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.
virtual void	notifyFork ()
	Notify a child process of a fork.
Public Member Functions inherited from gem5::statistics::Group
	Group (Group *parent, const char *name=nullptr)
	Construct a new statistics group.
virtual	~Group ()
virtual void	resetStats ()
	Callback to reset stats.
virtual void	preDumpStats ()
	Callback before stats are dumped.
void	addStat (statistics::Info *info)
	Register a stat with this group.
const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.
const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.
void	addStatGroup (const char *name, Group *block)
	Add a stat block as a child of this block.
const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.
void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.
	Group ()=delete
	Group (const Group &)=delete
Group &	operator= (const Group &)=delete
Public Member Functions inherited from gem5::Named
	Named (std::string_view name_)
virtual	~Named ()=default
virtual std::string	name () const

Static Public Member Functions
static void	printSystems ()
Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system.
static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it.
static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.
static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.
Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.
static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Public Attributes
Threads	threads
const bool	multiThread
uint64_t	init_param
PortProxy	physProxy
	Port to physical memory used for writing object files into ram at boot.
Workload *	workload = nullptr
	OS kernel.
std::map< std::pair< uint32_t, uint32_t >, Tick >	lastWorkItemStarted
std::map< uint32_t, statistics::Histogram * >	workItemStats
FutexMap	futexMap
std::set< int >	PIDs
	Process set to track which PIDs have already been allocated.
std::list< BasicSignal >	signalList
std::vector< RedirectPath * >	redirectPaths

Static Public Attributes
static std::vector< System * >	systemList
static int	numSystemsRunning = 0
static const int	maxPID = 32768

Protected Member Functions
std::string	stripSystemName (const std::string &requestor_name) const
	Strips off the system name from a requestor name.
RequestorID	_getRequestorId (const SimObject *requestor, const std::string &requestor_name)
	helper function for getRequestorId
std::string	leafRequestorName (const SimObject *requestor, const std::string &subrequestor)
	Helper function for constructing the full (sub)requestor name by providing the root requestor and the relative subrequestor name.
Protected Member Functions inherited from gem5::Drainable
	Drainable ()
virtual	~Drainable ()
virtual void	drainResume ()
	Resume execution after a successful drain.
void	signalDrainDone () const
	Signal that an object is drained.

Protected Attributes
KvmVM *	kvmVM = nullptr
memory::PhysicalMemory	physmem
AddrRangeList	ShadowRomRanges
enums::MemoryMode	memoryMode
const Addr	_cacheLineSize
uint64_t	workItemsBegin = 0
uint64_t	workItemsEnd = 0
uint32_t	numWorkIds
std::vector< RequestorInfo >	requestors
	This array is a per-system list of all devices capable of issuing a memory system request and an associated string for each requestor id.
ThermalModel *	thermalModel
const AddrRange	_m5opRange
	Range for memory-mapped m5 pseudo ops.
Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters.
Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue.

Private Attributes
std::list< PCEvent * >	liveEvents
SystemPort	_systemPort
std::unordered_map< RequestorID, std::vector< memory::AbstractMemory * > >	deviceMemMap
AddrRangeList	externalMemRanges

Additional Inherited Members
Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Detailed Description

Definition at line 74 of file system.hh.

Constructor & Destructor Documentation

System()

gem5::System::System

(

const Params &

p

)

Definition at line 167 of file system.cc.

References _cacheLineSize, _m5opRange, _systemPort, externalMemRanges, gem5::Request::funcRequestorId, getRequestorId(), init_param, gem5::Request::intRequestorId, memoryMode, multiThread, gem5::Named::name(), numSystemsRunning, numWorkIds, gem5::MipsISA::p, panic_if, gem5::SimObject::params(), physmem, physProxy, gem5::RangeSize(), redirectPaths, ShadowRomRanges, gem5::SimObject::SimObject(), systemList, thermalModel, warn_once, gem5::Request::wbRequestorId, workload, and gem5::RiscvISA::x.

Referenced by gem5::ArmSystem::ArmSystem(), PARAMS(), and printSystems().

~System()

gem5::System::~System

(

)

Definition at line 218 of file system.cc.

References numWorkIds, and workItemStats.

Member Function Documentation

_getRequestorId()

RequestorID gem5::System::_getRequestorId ( const SimObject * requestor, const std::string & requestor_name )

protected

helper function for getRequestorId

Definition at line 495 of file system.cc.

References gem5::statistics::enabled(), fatal, gem5::ArmISA::i, gem5::Named::name(), requestors, gem5::SimObject::SimObject(), and stripSystemName().

Referenced by getGlobalRequestorId(), and getRequestorId().

addDeviceMemory()

void gem5::System::addDeviceMemory	(	RequestorID	requestorId,
		memory::AbstractMemory *	deviceMemory )

Add a physical memory range for a device.

The ranges added here will be considered a non-PIO memory address if the requestorId of the packet and range match something in the device memory map.

Definition at line 307 of file system.cc.

References deviceMemMap.

bypassCaches()

bool gem5::System::bypassCaches ( ) const

inline

Should caches be bypassed?

Some CPUs need to bypass caches to allow direct memory accesses, which is required for hardware virtualization.

Definition at line 284 of file system.hh.

References memoryMode.

cacheLineSize()

Addr gem5::System::cacheLineSize ( ) const

inline

Get the cache line size of the system.

Definition at line 313 of file system.hh.

References _cacheLineSize.

Referenced by gem5::RiscvISA::hwprobe_one_pair(), gem5::memory::AbstractMemory::initState(), and gem5::SparcISA::TLB::translateFunctional().

getDeviceMemory()

memory::AbstractMemory * gem5::System::getDeviceMemory

(

const PacketPtr &

pkt

)

const

Return a pointer to the device memory.

Definition at line 324 of file system.cc.

References deviceMemMap, gem5::Packet::getAddrRange(), gem5::AddrRange::isSubset(), mem, panic_if, and gem5::Packet::requestorId().

Referenced by isDeviceMemAddr().

getGlobalRequestorId()

RequestorID gem5::System::getGlobalRequestorId

(

const std::string &

requestor_name

)

Registers a GLOBAL RequestorID, which is a RequestorID not related to any particular SimObject; since no SimObject is passed, the requestor gets registered by providing the full requestor name.

Parameters

requestorName

full name of the requestor

Returns

the requestor's ID.

Definition at line 482 of file system.cc.

References _getRequestorId().

getGuestByteOrder()

ByteOrder gem5::System::getGuestByteOrder ( ) const

inline

Get the guest byte order.

Definition at line 393 of file system.hh.

References workload.

Referenced by gem5::_llseekFunc(), and gem5::getcpuFunc().

getKvmVM()

KvmVM * gem5::System::getKvmVM ( ) const

inline

Get a pointer to the Kernel Virtual Machine (KVM) SimObject, if present.

Definition at line 338 of file system.hh.

References kvmVM.

getMemoryMode()

enums::MemoryMode gem5::System::getMemoryMode ( ) const

inline

Get the memory mode of the system.

\warn This should only be used by the Python world. The C++ world should use one of the query functions above (isAtomicMode(), isTimingMode(), bypassCaches()).

Definition at line 298 of file system.hh.

References memoryMode.

getPhysMem() [1/2]

memory::PhysicalMemory & gem5::System::getPhysMem ( )

inline

Get a pointer to access the physical memory of the system.

Definition at line 347 of file system.hh.

References physmem.

Referenced by gem5::BaseSemihosting::gatherHeapInfo().

getPhysMem() [2/2]

const memory::PhysicalMemory & gem5::System::getPhysMem ( ) const

inline

Definition at line 348 of file system.hh.

References physmem.

getPort()

Port & gem5::System::getPort ( const std::string & if_name, PortID idx = InvalidPortID )

overridevirtual

Additional function to return the Port of a memory object.

Reimplemented from gem5::SimObject.

Definition at line 225 of file system.cc.

References _systemPort.

getRequestorId()

RequestorID gem5::System::getRequestorId	(	const SimObject *	requestor,
		std::string	subrequestor = {} )

Request an id used to create a request object in the system.

All objects that intend to issues requests into the memory system must request an id in the init() phase of startup. All requestor ids must be fixed by the regStats() phase that immediately precedes it. This allows objects in the memory system to understand how many requestors may exist and appropriately name the bins of their per-requestor stats before the stats are finalized.

Registers a RequestorID: This method takes two parameters, one of which is optional. The first one is the requestor object, and it is compulsory; in case a object has multiple (sub)requestors, a second parameter must be provided and it contains the name of the subrequestor. The method will create a requestor's name by concatenating the SimObject name with the eventual subrequestor string, separated by a dot.

As an example: For a cpu having two requestors: a data requestor and an instruction requestor, the method must be called twice:

instRequestorId = getRequestorId(cpu, "inst"); dataRequestorId = getRequestorId(cpu, "data");

and the requestors' names will be:

• "cpu.inst"
• "cpu.data"

Parameters

requestor	SimObject related to the requestor
subrequestor	String containing the subrequestor's name

Returns

the requestor's ID.

Definition at line 488 of file system.cc.

References _getRequestorId(), leafRequestorName(), and gem5::SimObject::SimObject().

Referenced by System().

getRequestorName()

std::string gem5::System::getRequestorName

(

RequestorID

requestor_id

)

Get the name of an object for a given request id.

Definition at line 539 of file system.cc.

References fatal, and requestors.

Referenced by gem5::memory::AbstractMemory::MemStats::regStats().

getShadowRomRanges()

AddrRangeList gem5::System::getShadowRomRanges ( ) const

inline

Definition at line 387 of file system.hh.

References ShadowRomRanges.

getSystemPort()

RequestPort & gem5::System::getSystemPort ( )

inline

Get a reference to the system port that can be used by non-structural simulation objects like processes or threads, or external entities like loaders and debuggers, etc, to access the memory system.

Returns

a reference to the system port we own

Definition at line 244 of file system.hh.

References _systemPort.

getThermalModel()

ThermalModel * gem5::System::getThermalModel ( ) const

inline

The thermal model used for this system (if any).

Definition at line 401 of file system.hh.

References thermalModel.

incWorkItemsBegin()

uint64_t gem5::System::incWorkItemsBegin ( )

inline

Called by pseudo_inst to track the number of work items started by this system.

Definition at line 522 of file system.hh.

References workItemsBegin.

Referenced by gem5::pseudo_inst::workbegin().

incWorkItemsEnd()

uint64_t gem5::System::incWorkItemsEnd ( )

inline

Called by pseudo_inst to track the number of work items completed by this system.

Definition at line 532 of file system.hh.

References workItemsEnd.

Referenced by gem5::pseudo_inst::workend().

isAtomicMode()

bool gem5::System::isAtomicMode ( ) const

inline

Is the system in atomic mode?

There are currently two different atomic memory modes: 'atomic', which supports caches; and 'atomic_noncaching', which bypasses caches. The latter is used by hardware virtualized CPUs. SimObjects are expected to use Port::sendAtomic() and Port::recvAtomic() when accessing memory in this mode.

Definition at line 263 of file system.hh.

References memoryMode.

isDeviceMemAddr()

bool gem5::System::isDeviceMemAddr

(

const PacketPtr &

pkt

)

const

Similar to isMemAddr but for devices.

Checks if a physical address of the packet match an address range of a device corresponding to the RequestorId of the request.

Definition at line 314 of file system.cc.

References deviceMemMap, getDeviceMemory(), and gem5::Packet::requestorId().

isMemAddr()

bool gem5::System::isMemAddr

(

Addr

addr

)

const

Check if a physical address is within a range of a memory that is part of the global address map.

Parameters

addr	A physical address

Returns

Whether the address corresponds to a memory

Definition at line 290 of file system.cc.

References gem5::X86ISA::addr, externalMemRanges, and physmem.

isTimingMode()

bool gem5::System::isTimingMode ( ) const

inline

Is the system in timing mode?

SimObjects are expected to use Port::sendTiming() and Port::recvTiming() when accessing memory in this mode.

Definition at line 275 of file system.hh.

References memoryMode.

Referenced by gem5::memory::HBMCtrl::drainResume(), gem5::memory::HeteroMemCtrl::drainResume(), gem5::memory::MemCtrl::drainResume(), gem5::memory::HBMCtrl::startup(), and gem5::memory::MemCtrl::startup().

leafRequestorName()

std::string gem5::System::leafRequestorName ( const SimObject * requestor, const std::string & subrequestor )

protected

Helper function for constructing the full (sub)requestor name by providing the root requestor and the relative subrequestor name.

Definition at line 526 of file system.cc.

References gem5::Named::name(), and gem5::SimObject::SimObject().

Referenced by getRequestorId().

lookupRequestorId() [1/2]

RequestorID gem5::System::lookupRequestorId

(

const SimObject *

obj

)

const

Looks up the RequestorID for a given SimObject returns an invalid RequestorID (invldRequestorId) if not found.

Definition at line 445 of file system.cc.

References fatal_if, gem5::ArmISA::i, gem5::ArmISA::id, gem5::Request::invldRequestorId, requestors, and gem5::SimObject::SimObject().

lookupRequestorId() [2/2]

RequestorID gem5::System::lookupRequestorId

(

const std::string &

name

)

const

Looks up the RequestorID for a given object name string returns an invalid RequestorID (invldRequestorId) if not found.

Definition at line 468 of file system.cc.

References gem5::ArmISA::i, gem5::Request::invldRequestorId, gem5::Named::name(), requestors, and stripSystemName().

m5opRange()

const AddrRange & gem5::System::m5opRange ( ) const

inline

Range used by memory-mapped m5 pseudo-ops if enabled.

Returns an invalid/empty range if disabled.

Definition at line 578 of file system.hh.

References _m5opRange.

markWorkItem()

int gem5::System::markWorkItem ( int index )

inline

Called by pseudo_inst to mark the cpus actively executing work items.

Returns the total number of cpus that have executed work item begin or ends.

Definition at line 543 of file system.hh.

References gem5::MipsISA::index, and threads.

Referenced by gem5::pseudo_inst::workbegin(), and gem5::pseudo_inst::workend().

maxRequestors()

RequestorID gem5::System::maxRequestors ( )

inline

Get the number of requestors registered in the system.

Definition at line 500 of file system.hh.

References requestors.

Referenced by gem5::memory::AbstractMemory::MemStats::regStats().

memSize()

Addr gem5::System::memSize

(

)

const

Amount of physical memory that exists.

Definition at line 284 of file system.cc.

References physmem.

PARAMS()

gem5::System::PARAMS

(

System

)

References gem5::MipsISA::p, and System().

printSystems()

void gem5::System::printSystems ( )

static

Definition at line 413 of file system.cc.

References gem5::ArmISA::i, gem5::Named::name(), System(), and systemList.

Referenced by gem5::printSystems().

registerThreadContext()

void gem5::System::registerThreadContext

(

ThreadContext *

tc

)

Definition at line 239 of file system.cc.

References gem5::ArmISA::e, liveEvents, gem5::PCEventScope::schedule(), threads, and workload.

regStats()

void gem5::System::regStats ( )

overridevirtual

Callback to set stat parameters.

This callback is typically used for complex stats (e.g., distributions) that need parameters in addition to a name and a description. Stat names and descriptions should typically be set from the constructor usingo from the constructor using the ADD_STAT macro.

Reimplemented from gem5::statistics::Group.

Definition at line 374 of file system.cc.

References gem5::ccprintf(), numWorkIds, gem5::statistics::Group::regStats(), and workItemStats.

remove()

bool gem5::System::remove ( PCEvent * event )

overridevirtual

Implements gem5::PCEventScope.

Definition at line 260 of file system.cc.

References gem5::RiscvISA::all, gem5::MipsISA::event, liveEvents, and threads.

replaceThreadContext()

void gem5::System::replaceThreadContext	(	ThreadContext *	tc,
		ContextID	context_id )

Definition at line 270 of file system.cc.

References gem5::ArmISA::e, liveEvents, gem5::PCEventScope::schedule(), threads, and workload.

schedule()

bool gem5::System::schedule ( PCEvent * event )

overridevirtual

Implements gem5::PCEventScope.

Definition at line 250 of file system.cc.

References gem5::RiscvISA::all, gem5::MipsISA::event, liveEvents, and threads.

serialize()

void gem5::System::serialize ( CheckpointOut & cp ) const

overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Reimplemented from gem5::SimObject.

Definition at line 341 of file system.cc.

References gem5::csprintf(), gem5::paramOut(), physmem, gem5::ArmISA::t, and threads.

setKvmVM()

void gem5::System::setKvmVM ( KvmVM *const vm )

inline

Set the pointer to the Kernel Virtual Machine (KVM) SimObject.

For use by that object to declare itself to the system.

Definition at line 344 of file system.hh.

References kvmVM, and gem5::ArmISA::vm.

setMemoryMode()

void gem5::System::setMemoryMode

(

enums::MemoryMode

mode

)

Change the memory mode of the system.

\warn This should only be called by the Python!

Parameters

mode	Mode to change to (atomic/timing/...)

Definition at line 232 of file system.cc.

References gem5::Drained, gem5::Drainable::drainState(), memoryMode, and gem5::ArmISA::mode.

stripSystemName()

std::string gem5::System::stripSystemName ( const std::string & requestor_name ) const

protected

Strips off the system name from a requestor name.

Definition at line 435 of file system.cc.

References gem5::Named::name(), and gem5::startswith().

Referenced by _getRequestorId(), and lookupRequestorId().

trapToGdb()

bool gem5::System::trapToGdb	(	GDBSignal	signal,
		ContextID	ctx_id ) const

Definition at line 407 of file system.cc.

References workload.

Referenced by gem5::GenericAlignmentFault::invoke(), gem5::GenericPageTableFault::invoke(), gem5::PowerISA::AlignmentFault::invoke(), gem5::PowerISA::TrapFault::invoke(), gem5::PowerISA::UnimplementedOpcodeFault::invoke(), gem5::RiscvISA::BreakpointFault::invokeSE(), and gem5::RiscvISA::IllegalInstFault::invokeSE().

unserialize()

void gem5::System::unserialize ( CheckpointIn & cp )

overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Reimplemented from gem5::SimObject.

Definition at line 357 of file system.cc.

References gem5::csprintf(), gem5::optParamIn(), physmem, gem5::ArmISA::t, and threads.

workItemBegin()

void gem5::System::workItemBegin ( uint32_t tid, uint32_t workid )

inline

Definition at line 550 of file system.hh.

References gem5::curTick(), lastWorkItemStarted, and gem5::MipsISA::p.

Referenced by gem5::pseudo_inst::workbegin().

workItemEnd()

void gem5::System::workItemEnd	(	uint32_t	tid,
		uint32_t	workid )

Definition at line 390 of file system.cc.

References gem5::curTick(), DPRINTF, fatal, lastWorkItemStarted, numWorkIds, gem5::MipsISA::p, and workItemStats.

Referenced by gem5::pseudo_inst::workend().

Member Data Documentation

_cacheLineSize

const Addr gem5::System::_cacheLineSize

protected

Definition at line 413 of file system.hh.

Referenced by cacheLineSize(), and System().

_m5opRange

const AddrRange gem5::System::_m5opRange

protected

Range for memory-mapped m5 pseudo ops.

The range will be invalid/empty if disabled.

Definition at line 566 of file system.hh.

Referenced by m5opRange(), and System().

_systemPort

SystemPort gem5::System::_systemPort

private

Definition at line 108 of file system.hh.

Referenced by getPort(), getSystemPort(), and System().

deviceMemMap

std::unordered_map<RequestorID, std::vector<memory::AbstractMemory *> > gem5::System::deviceMemMap

private

Definition at line 112 of file system.hh.

Referenced by addDeviceMemory(), getDeviceMemory(), and isDeviceMemAddr().

externalMemRanges

AddrRangeList gem5::System::externalMemRanges

private

Definition at line 117 of file system.hh.

Referenced by isMemAddr(), and System().

futexMap

FutexMap gem5::System::futexMap

Definition at line 603 of file system.hh.

Referenced by gem5::exitFutexWake(), and gem5::futexFunc().

init_param

uint64_t gem5::System::init_param

Definition at line 324 of file system.hh.

Referenced by gem5::pseudo_inst::initParam(), and System().

kvmVM

KvmVM* gem5::System::kvmVM = nullptr

protected

Definition at line 405 of file system.hh.

Referenced by getKvmVM(), and setKvmVM().

lastWorkItemStarted

std::map<std::pair<uint32_t, uint32_t>, Tick> gem5::System::lastWorkItemStarted

Definition at line 589 of file system.hh.

Referenced by workItemBegin(), and workItemEnd().

liveEvents

std::list<PCEvent *> gem5::System::liveEvents

private

Definition at line 107 of file system.hh.

Referenced by registerThreadContext(), remove(), replaceThreadContext(), and schedule().

maxPID

const int gem5::System::maxPID = 32768

static

Definition at line 605 of file system.hh.

Referenced by gem5::doClone(), and gem5::Process::Process().

memoryMode

enums::MemoryMode gem5::System::memoryMode

protected

Definition at line 411 of file system.hh.

Referenced by bypassCaches(), getMemoryMode(), isAtomicMode(), isTimingMode(), setMemoryMode(), and System().

multiThread

const bool gem5::System::multiThread

Definition at line 317 of file system.hh.

Referenced by gem5::ArmISA::getAff0(), gem5::ArmISA::getAff1(), gem5::ArmISA::getAff2(), gem5::ArmISA::getMPIDR(), and System().

numSystemsRunning

int gem5::System::numSystemsRunning = 0

static

Definition at line 599 of file system.hh.

Referenced by System().

numWorkIds

uint32_t gem5::System::numWorkIds

protected

Definition at line 417 of file system.hh.

Referenced by regStats(), System(), workItemEnd(), and ~System().

physmem

memory::PhysicalMemory gem5::System::physmem

protected

Definition at line 407 of file system.hh.

Referenced by getPhysMem(), getPhysMem(), isMemAddr(), memSize(), serialize(), System(), and unserialize().

physProxy

PortProxy gem5::System::physProxy

Port to physical memory used for writing object files into ram at boot.

Definition at line 328 of file system.hh.

Referenced by System().

PIDs

std::set<int> gem5::System::PIDs

Process set to track which PIDs have already been allocated.

Definition at line 608 of file system.hh.

redirectPaths

std::vector<RedirectPath*> gem5::System::redirectPaths

Definition at line 617 of file system.hh.

Referenced by System().

requestors

std::vector<RequestorInfo> gem5::System::requestors

protected

This array is a per-system list of all devices capable of issuing a memory system request and an associated string for each requestor id.

It's used to uniquely id any requestor in the system by name for things like cache statistics.

Definition at line 424 of file system.hh.

Referenced by _getRequestorId(), getRequestorName(), lookupRequestorId(), lookupRequestorId(), and maxRequestors().

ShadowRomRanges

AddrRangeList gem5::System::ShadowRomRanges

protected

Definition at line 409 of file system.hh.

Referenced by getShadowRomRanges(), and System().

signalList

std::list<BasicSignal> gem5::System::signalList

Definition at line 612 of file system.hh.

Referenced by gem5::exitImpl(), gem5::pollFunc(), gem5::selectFunc(), and gem5::wait4Func().

systemList

std::vector< System * > gem5::System::systemList

static

Definition at line 598 of file system.hh.

Referenced by gem5::exitImpl(), printSystems(), and System().

thermalModel

ThermalModel* gem5::System::thermalModel

protected

Definition at line 426 of file system.hh.

Referenced by getThermalModel(), and System().

threads

Threads gem5::System::threads

Definition at line 315 of file system.hh.

Referenced by gem5::ArmISA::TLBIOp::broadcast(), gem5::memory::AbstractMemory::checkLockedAddrList(), gem5::GicV2Registers::clearBankedDistRange(), gem5::GicV2Registers::copyBankedDistRange(), gem5::Linux::cpuOnline(), gem5::doClone(), gem5::SparcISA::TLB::doMmuRegWrite(), gem5::exitImpl(), gem5::GPUCommandProcessor::functionalReadHsaSignal(), gem5::getrlimitFunc(), markWorkItem(), gem5::ThreadContext::quiesce(), gem5::ThreadContext::quiesceTick(), gem5::SparcISA::ISA::readFSReg(), registerThreadContext(), remove(), replaceThreadContext(), gem5::schedGetaffinityFunc(), schedule(), serialize(), gem5::setpgidFunc(), gem5::tgkillFunc(), unserialize(), gem5::GPUCommandProcessor::updateHsaSignal(), and gem5::pseudo_inst::wakeCPU().

workItemsBegin

uint64_t gem5::System::workItemsBegin = 0

protected

Definition at line 415 of file system.hh.

Referenced by incWorkItemsBegin().

workItemsEnd

uint64_t gem5::System::workItemsEnd = 0

protected

Definition at line 416 of file system.hh.

Referenced by incWorkItemsEnd().

workItemStats

std::map<uint32_t, statistics::Histogram*> gem5::System::workItemStats

Definition at line 590 of file system.hh.

Referenced by regStats(), workItemEnd(), and ~System().

workload

Workload* gem5::System::workload = nullptr

OS kernel.

Definition at line 331 of file system.hh.

Referenced by gem5::pseudo_inst::addsymbol(), gem5::pseudo_inst::arm(), gem5::ArmSystem::ArmSystem(), gem5::RiscvISA::SystemOp::executeEBreakOrSemihosting(), getGuestByteOrder(), gem5::ArmISA::SupervisorCall::invoke(), gem5::SESyscallFault::invoke(), gem5::RiscvISA::SyscallFault::invokeSE(), gem5::pseudo_inst::loadsymbol(), registerThreadContext(), replaceThreadContext(), System(), trapToGdb(), and gem5::pseudo_inst::triggerWorkloadEvent().

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

• sim/system.hh
• sim/system.cc