#include <fs_workload.hh>

Inheritance diagram for gem5::ArmISA::FsLinux:

Public Member Functions
	PARAMS (ArmFsLinux)
	Boilerplate params code.

	FsLinux (const Params &p)

	~FsLinux ()

void	initState () override
	initState() is called on each SimObject when not restoring from a checkpoint.

void	startup () override
	startup() is the final initialization call before simulation.

void	mapPid (ThreadContext *tc, uint32_t pid)
	This function creates a new task Id for the given pid.

void	dumpDmesg ()
	Dump the kernel's dmesg buffer to stdout.

Public Member Functions inherited from gem5::ArmISA::FsWorkload
	PARAMS (ArmFsWorkload)

Addr	getEntry () const override

loader::Arch	getArch () const override

ByteOrder	byteOrder () const override

	FsWorkload (const Params &p)

void	initState () override
	initState() is called on each SimObject when not restoring from a checkpoint.

void	setSystem (System *sys) override

Addr	fixFuncEventAddr (Addr addr) const override

Public Member Functions inherited from gem5::KernelWorkload
	PARAMS (KernelWorkload)

Addr	start () const

Addr	end () const

Addr	loadAddrMask () const

Addr	loadAddrOffset () const

	KernelWorkload (const Params &p)

Addr	getEntry () const override

ByteOrder	byteOrder () const override

loader::Arch	getArch () const override

const loader::SymbolTable &	symtab (ThreadContext *tc) override

bool	insertSymbol (const loader::Symbol &symbol) override

void	initState () override
	initState() is called on each SimObject when not restoring from a checkpoint.

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

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

template<class T , typename... Args>
T *	addKernelFuncEvent (const char *lbl, Args... args)
	Add a function-based event to a kernel symbol.

template<class T , typename... Args>
T *	addKernelFuncEventOrPanic (const char *lbl, Args... args)

Public Member Functions inherited from gem5::Workload
	Workload (const WorkloadParams &params)

void	recordQuiesce ()

void	recordArm ()

bool	trapToGdb (GDBSignal sig, ContextID ctx_id)

bool	sendToGdb (std::string msg)

virtual void	registerThreadContext (ThreadContext *tc)

virtual void	replaceThreadContext (ThreadContext *tc)

void	startup () override
	startup() is the final initialization call before simulation.

virtual SimObject *	getSemihosting () const
	Returns the semihosting interface if supported by the current workload.

virtual void	syscall (ThreadContext *tc)

virtual void	event (ThreadContext *tc)

template<class T , typename... Args>
T *	addFuncEvent (const loader::SymbolTable &symtab, const char *lbl, const std::string &desc, Args... args)
	Add a function-based event to the given function, to be looked up in the specified symbol table.

template<class T >
T *	addFuncEvent (const loader::SymbolTable &symtab, const char *lbl)

template<class T , typename... Args>
T *	addFuncEventOrPanic (const loader::SymbolTable &symtab, const char *lbl, Args... args)

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	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 Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index.

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.

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

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

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	regStats ()
	Callback to set stat parameters.

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 (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Public Attributes
bool	enableContextSwitchStatsDump
	When enabled, dump stats/task info on context switches for Streamline and per-thread cache occupancy studies, etc.

std::map< uint32_t, uint32_t >	taskMap
	This map stores a mapping of OS process IDs to internal Task IDs.

OutputStream *	taskFile = nullptr
	This is a file that is placed in the run directory that prints out mappings between taskIds and OS process IDs.

Protected Attributes
PCEvent *	debugPrintk = nullptr
	PC based event to skip the dprink() call and emulate its functionality.

PCEvent *	dumpStats = nullptr

Protected Attributes inherited from gem5::ArmISA::FsWorkload
std::vector< std::unique_ptr< loader::ObjectFile > >	bootLoaders
	Bootloaders.

loader::ObjectFile *	bootldr = nullptr
	Pointer to the bootloader object.

Addr	kernelEntry = 0
	This differs from entry since it takes into account where the kernel is loaded in memory (with loadAddrMask and loadAddrOffset).

Protected Attributes inherited from gem5::KernelWorkload
loader::MemoryImage	image

Addr	_loadAddrMask
	Mask that should be anded for binary/symbol loading.

Addr	_loadAddrOffset
	Offset that should be used for binary/symbol loading.

Addr	_start

Addr	_end

std::vector< loader::ObjectFile * >	extras

loader::ObjectFile *	kernelObj = nullptr

loader::SymbolTable	kernelSymtab

const std::string	commandLine

Protected Attributes inherited from gem5::Workload
gem5::Workload::WorkloadStats	stats

BaseRemoteGDB *	gdb = nullptr

bool	waitForRemoteGDB = false

std::set< ThreadContext * >	threads

System *	system = nullptr

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
PCEvent *	kernelPanic = nullptr
	Event to halt the simulator if the kernel calls panic()

PCEvent *	kernelOops = nullptr
	Event to halt the simulator if the kernel calls oopses

PCEvent *	skipUDelay = nullptr
	PC based event to skip udelay(<time>) calls and quiesce the processor for the appropriate amount of time.

PCEvent *	skipConstUDelay = nullptr
	Another PC based skip event for const_udelay().

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

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.

Protected Member Functions inherited from gem5::ArmISA::FsWorkload
loader::ObjectFile *	getBootLoader (loader::ObjectFile *const obj)
	Get a boot loader that matches the kernel.

template<template< class ABI, class Base > class FuncEvent, typename... Args>
PCEvent *	addSkipFunc (Args... args)

template<template< class ABI, class Base > class FuncEvent, typename... Args>
PCEvent *	addSkipFuncOrPanic (Args... args)

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.

Detailed Description

Definition at line 76 of file fs_workload.hh.

Constructor & Destructor Documentation

◆ FsLinux()

gem5::ArmISA::FsLinux::FsLinux ( const Params & p )

Definition at line 68 of file fs_workload.cc.

◆ ~FsLinux()

gem5::ArmISA::FsLinux::~FsLinux ( )

Definition at line 195 of file fs_workload.cc.

References debugPrintk, dumpStats, kernelOops, kernelPanic, skipConstUDelay, and skipUDelay.

Member Function Documentation

◆ dumpDmesg()

void gem5::ArmISA::FsLinux::dumpDmesg ( )

Dump the kernel's dmesg buffer to stdout.

Definition at line 287 of file fs_workload.cc.

References gem5::linux::dumpDmesg(), gem5::Workload::system, and gem5::System::threads.

◆ initState()

void gem5::ArmISA::FsLinux::initState ( )

overridevirtual

initState() is called on each SimObject when not restoring from a checkpoint.

This provides a hook for state initializations that are only required for a "cold start".

Reimplemented from gem5::SimObject.

Definition at line 73 of file fs_workload.cc.

References gem5::KernelWorkload::_loadAddrMask, gem5::X86ISA::ac, gem5::SparcISA::am, gem5::loader::Arm64, gem5::AtagCmdline::cmdline(), gem5::KernelWorkload::commandLine, gem5::AtagHeader::copyOut(), DDUMP, gem5::loader::debugSymbolTable, DPRINTF, gem5::loader::SymbolTable::end(), fatal_if, gem5::loader::SymbolTable::find(), gem5::AtagCore::flags(), gem5::ArmISA::FsWorkload::getArch(), gem5::memory::PhysicalMemory::getConfAddrRanges(), gem5::System::getPhysMem(), gem5::loader::SymbolTable::globals(), inform, gem5::ArmISA::FsWorkload::initState(), gem5::loader::SymbolTable::insert(), gem5::KernelWorkload::kernelObj, gem5::KernelWorkload::kernelSymtab, gem5::AtagMem::memSize(), gem5::ArmISA::offset, gem5::SimObject::params(), gem5::System::physProxy, gem5::ArmISA::int_reg::R0, gem5::ArmISA::int_reg::R1, gem5::ArmISA::int_reg::R2, gem5::AtagHeader::size(), gem5::loader::ObjectFile::symtab(), gem5::Workload::system, gem5::System::threads, warn, gem5::PortProxy::writeBlob(), gem5::ArmISA::int_reg::X0, and gem5::ArmISA::int_reg::X5.

◆ mapPid()

void gem5::ArmISA::FsLinux::mapPid	(	ThreadContext *	tc,
		uint32_t	pid )

This function creates a new task Id for the given pid.

Parameters

tc	thread context that is currentyl executing

Definition at line 271 of file fs_workload.cc.

References gem5::context_switch_task_id::MaxNormalTaskId, taskMap, gem5::context_switch_task_id::Unknown, and warn_once.

Referenced by gem5::ArmISA::DumpStats::process(), and startup().

◆ PARAMS()

gem5::ArmISA::FsLinux::PARAMS ( ArmFsLinux )

Boilerplate params code.

◆ startup()

void gem5::ArmISA::FsLinux::startup ( )

overridevirtual

startup() is the final initialization call before simulation.

All state is initialized (including unserialized state, if any, such as the curTick() value), so this is the appropriate place to schedule initial event(s) for objects that need them.

Reimplemented from gem5::SimObject.

Definition at line 207 of file fs_workload.cc.

References gem5::KernelWorkload::addKernelFuncEvent(), gem5::ArmISA::FsWorkload::addSkipFunc(), gem5::ArmISA::FsWorkload::addSkipFuncOrPanic(), gem5::loader::Arm64, gem5::OutputDirectory::create(), debugPrintk, dumpStats, enableContextSwitchStatsDump, gem5::ArmISA::FsWorkload::getArch(), gem5::BaseCPU::invldPid, kernelOops, kernelPanic, mapPid(), gem5::Named::name(), panic_if, gem5::SimObject::params(), gem5::simout, skipConstUDelay, skipUDelay, gem5::SimObject::startup(), gem5::Workload::system, taskFile, taskMap, gem5::System::threads, and warn.

Member Data Documentation

◆ debugPrintk

PCEvent* gem5::ArmISA::FsLinux::debugPrintk = nullptr

protected

PC based event to skip the dprink() call and emulate its functionality.

Definition at line 83 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ dumpStats

PCEvent* gem5::ArmISA::FsLinux::dumpStats = nullptr

protected

Definition at line 85 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ enableContextSwitchStatsDump

bool gem5::ArmISA::FsLinux::enableContextSwitchStatsDump

When enabled, dump stats/task info on context switches for Streamline and per-thread cache occupancy studies, etc.

Definition at line 93 of file fs_workload.hh.

Referenced by startup().

◆ kernelOops

PCEvent* gem5::ArmISA::FsLinux::kernelOops = nullptr

private

Event to halt the simulator if the kernel calls oopses

Definition at line 127 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ kernelPanic

PCEvent* gem5::ArmISA::FsLinux::kernelPanic = nullptr

private

Event to halt the simulator if the kernel calls panic()

Definition at line 124 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ skipConstUDelay

PCEvent* gem5::ArmISA::FsLinux::skipConstUDelay = nullptr

private

Another PC based skip event for const_udelay().

Similar to the udelay skip, but this function precomputes the first multiply that is done in the generic case since the parameter is known at compile time. Thus we need to do some division to get back to us.

Definition at line 141 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ skipUDelay

PCEvent* gem5::ArmISA::FsLinux::skipUDelay = nullptr

private

PC based event to skip udelay(<time>) calls and quiesce the processor for the appropriate amount of time.

This is not functionally required but does speed up simulation.

Definition at line 134 of file fs_workload.hh.

Referenced by startup(), and ~FsLinux().

◆ taskFile

OutputStream* gem5::ArmISA::FsLinux::taskFile = nullptr

This is a file that is placed in the run directory that prints out mappings between taskIds and OS process IDs.

Definition at line 103 of file fs_workload.hh.

Referenced by gem5::ArmISA::DumpStats::process(), and startup().

◆ taskMap

std::map<uint32_t, uint32_t> gem5::ArmISA::FsLinux::taskMap

This map stores a mapping of OS process IDs to internal Task IDs.

The mapping is done because the stats system doesn't tend to like vectors that are much greater than 1000 items and the entire process space is 65K.

Definition at line 99 of file fs_workload.hh.

Referenced by mapPid(), gem5::ArmISA::DumpStats::process(), and startup().

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

arch/arm/linux/fs_workload.hh
arch/arm/linux/fs_workload.cc

Public Member Functions

Public Attributes

Protected Attributes

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ FsLinux()

◆ ~FsLinux()

Member Function Documentation

◆ dumpDmesg()

◆ initState()

◆ mapPid()

◆ PARAMS()

◆ startup()

Member Data Documentation

◆ debugPrintk

◆ dumpStats

◆ enableContextSwitchStatsDump

◆ kernelOops

◆ kernelPanic

◆ skipConstUDelay

◆ skipUDelay

◆ taskFile

◆ taskMap