This class contains linux specific system code (Loading, Events). More...

#include <system.hh>

Inheritance diagram for LinuxAlphaSystem:

Classes
struct	PrintThreadInfo

struct	SkipDelayLoopEvent

Public Types
typedef LinuxAlphaSystemParams	Params

Public Types inherited from AlphaSystem
typedef AlphaSystemParams	Params

Public Types inherited from System
typedef SystemParams	Params

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
Addr	InitStack () const

Addr	EmptyPGT () const

Addr	EmptyPGE () const

Addr	ZeroPGE () const

Addr	StartAddr () const

Addr	Param () const

Addr	CommandLine () const

Addr	InitrdStart () const

Addr	InitrdSize () const

	LinuxAlphaSystem (Params *p)

	~LinuxAlphaSystem ()

virtual void	initState ()
	Initialise the system. More...

void	setDelayLoop (ThreadContext *tc)

const Params *	params () const

Public Member Functions inherited from AlphaSystem
	AlphaSystem (Params *p)

	~AlphaSystem ()

void	initState () override
	Initialise the state of the system. More...

void	serializeSymtab (CheckpointOut &cp) const override
	Serialization stuff. More...

void	unserializeSymtab (CheckpointIn &cp) override
	If needed, unserialize additional symbol table entries for a specific subclass of this system. More...

void	startup () override
	Override startup() to provide a path to call setupFuncEvents() More...

void	setAlphaAccess (Addr access)
	Set the m5AlphaAccess pointer in the console. More...

void	setIntrFreq (Tick freq)

Public Member Functions inherited from System
void	init () override
	After all objects have been created and all ports are connected, check that the system port is connected. More...

MasterPort &	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. More...

Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Additional function to return the Port of a memory object. More...

unsigned int	cacheLineSize () const
	Get the cache line size of the system. More...

ThreadContext *	findFreeContext ()

ThreadContext *	getThreadContext (ContextID tid) const

bool	schedule (PCEvent *event) override

bool	remove (PCEvent *event) override

unsigned	numContexts () const

int	numRunningContexts ()
	Return number of running (non-halted) thread contexts in system. More...

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

bool	validKvmEnvironment () const
	Verify gem5 configuration will support KVM emulation. More...

PhysicalMemory &	getPhysMem ()
	Get a pointer to access the physical memory of the system. More...

Addr	freeMemSize () const
	Amount of physical memory that is still free. More...

Addr	memSize () const
	Amount of physical memory that exists. More...

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. More...

Arch	getArch () const
	Get the architecture. More...

ByteOrder	getGuestByteOrder () const
	Get the guest byte order. More...

Addr	getPageBytes () const
	Get the page bytes for the ISA. More...

Addr	getPageShift () const
	Get the number of bits worth of in-page address for the ISA. More...

ThermalModel *	getThermalModel () const
	The thermal model used for this system (if any). More...

MasterID	getMasterId (const SimObject *master, std::string submaster=std::string())
	Request an id used to create a request object in the system. More...

MasterID	getGlobalMasterId (const std::string &master_name)
	Registers a GLOBAL MasterID, which is a MasterID not related to any particular SimObject; since no SimObject is passed, the master gets registered by providing the full master name. More...

std::string	getMasterName (MasterID master_id)
	Get the name of an object for a given request id. More...

MasterID	lookupMasterId (const SimObject *obj) const
	Looks up the MasterID for a given SimObject returns an invalid MasterID (invldMasterId) if not found. More...

MasterID	lookupMasterId (const std::string &name) const
	Looks up the MasterID for a given object name string returns an invalid MasterID (invldMasterId) if not found. More...

MasterID	maxMasters ()
	Get the number of masters registered in the system. More...

void	regStats () override
	Callback to set stat parameters. More...

uint64_t	incWorkItemsBegin ()
	Called by pseudo_inst to track the number of work items started by this system. More...

uint64_t	incWorkItemsEnd ()
	Called by pseudo_inst to track the number of work items completed by this system. More...

int	markWorkItem (int index)
	Called by pseudo_inst to mark the cpus actively executing work items. More...

void	workItemBegin (uint32_t tid, uint32_t workid)

void	workItemEnd (uint32_t tid, uint32_t workid)

bool	breakpoint ()

	System (Params *p)

	~System ()

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

const Params *	params () const

const AddrRange &	m5opRange () const
	Range used by memory-mapped m5 pseudo-ops if enabled. More...

Addr	getKernelStart () const
	Returns the address the kernel starts at. More...

Addr	getKernelEnd () const
	Returns the address the kernel ends at. More...

Addr	getKernelEntry () const
	Returns the address the entry point to the kernel code. More...

Addr	allocPhysPages (int npages)
	Allocate npages contiguous unused physical pages. More...

ContextID	registerThreadContext (ThreadContext *tc, ContextID assigned=InvalidContextID)

void	replaceThreadContext (ThreadContext *tc, ContextID context_id)

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

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

void	drainResume () override
	Resume execution after a successful drain. More...

bool	isAtomicMode () const
	Is the system in atomic mode? More...

bool	isTimingMode () const
	Is the system in timing mode? More...

bool	bypassCaches () const
	Should caches be bypassed? More...

Enums::MemoryMode	getMemoryMode () const
	Get the memory mode of the system. More...

void	setMemoryMode (Enums::MemoryMode mode)
	Change the memory mode of the system. More...

template<class T , typename... Args>
T *	addFuncEvent (const 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. More...

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

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

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

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

Public Member Functions inherited from SimObject
const Params *	params () const

	SimObject (const Params *_params)

virtual	~SimObject ()

virtual const std::string	name () const

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

Public Member Functions inherited from EventManager
	EventManager (EventManager &em)

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

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)

void	setCurTick (Tick newVal)

Public Member Functions inherited from Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from Stats::Group
	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (Stats::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

Static Public Attributes
static const int	CommandLineSize = 256

Static Public Attributes inherited from System
static std::vector< System * >	systemList

static int	numSystemsRunning = 0

static const int	maxPID = 32768

Static Public Attributes inherited from Serializable
static int	ckptCount = 0

static int	ckptMaxCount = 0

static int	ckptPrevCount = -1

Protected Member Functions
virtual void	setupFuncEvents ()
	Setup all the function events. More...

Protected Member Functions inherited from AlphaSystem
const Params *	params () const

template<class T >
T *	addPalFuncEvent (const char *lbl)
	Add a function-based event to PALcode. More...

template<class T >
T *	addConsoleFuncEvent (const char *lbl)
	Add a function-based event to the console code. More...

Addr	fixFuncEventAddr (Addr addr) override
	This function fixes up addresses that are used to match PCs for hooking simulator events on to target function executions. More...

Protected Member Functions inherited from System
std::string	stripSystemName (const std::string &master_name) const
	Strips off the system name from a master name. More...

MasterID	_getMasterId (const SimObject *master, const std::string &master_name)
	helper function for getMasterId More...

std::string	leafMasterName (const SimObject *master, const std::string &submaster)
	Helper function for constructing the full (sub)master name by providing the root master and the relative submaster name. More...

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

void	signalDrainDone () const
	Signal that an object is drained. More...

Private Attributes
Addr	KernelStart
	Addresses defining where the kernel bootloader places various elements. More...

BreakPCEvent *	kernelPanicEvent
	Event to halt the simulator if the kernel calls panic() More...

SkipFuncEvent *	skipCacheProbeEvent
	Event to skip determine_cpu_caches() because we don't support the IPRs that the code can access to figure out cache sizes. More...

SkipFuncEvent *	skipIdeDelay50msEvent
	PC based event to skip the ide_delay_50ms() call. More...

Linux::DebugPrintkEvent *	debugPrintkEvent
	PC based event to skip the dprink() call and emulate its functionality. More...

SkipDelayLoopEvent *	skipDelayLoopEvent
	Skip calculate_delay_loop() rather than waiting for this to be calculated. More...

PrintThreadInfo *	printThreadEvent
	Event to print information about thread switches if the trace flag Thread is set. More...

IdleStartEvent *	idleStartEvent
	Grab the PCBB of the idle process when it starts. More...

Additional Inherited Members
Static Public Member Functions inherited from System
static void	printSystems ()

Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Get the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)

static void	unserializeGlobals (CheckpointIn &cp)

Public Attributes inherited from AlphaSystem
SymbolTable *	consoleSymtab
	console symbol table More...

SymbolTable *	palSymtab
	pal symbol table More...

ObjectFile *	console
	Object pointer for the console code. More...

ObjectFile *	pal
	Object pointer for the PAL code. More...

BreakPCEvent *	consolePanicEvent
	Event to halt the simulator if the console calls panic() More...

Public Attributes inherited from System
std::vector< ThreadContext * >	threadContexts

const bool	multiThread

Addr	pagePtr

uint64_t	init_param

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

SymbolTable *	kernelSymtab
	kernel symbol table More...

ObjectFile *	kernel
	Object pointer for the kernel code. More...

MemoryImage	kernelImage

std::vector< ObjectFile * >	kernelExtras
	Additional object files. More...

Addr	kernelStart
	Beginning of kernel code. More...

Addr	kernelEnd
	End of kernel code. More...

Addr	kernelEntry
	Entry point in the kernel to start at. More...

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

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

std::vector< BaseRemoteGDB * >	remoteGDB

Counter	totalNumInsts

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

std::map< uint32_t, Stats::Histogram * >	workItemStats

FutexMap	futexMap

std::set< int >	PIDs
	Process set to track which PIDs have already been allocated. More...

std::list< BasicSignal >	signalList

std::vector< RedirectPath * >	redirectPaths

Protected Attributes inherited from AlphaSystem
Tick	intrFreq

FSTranslatingPortProxy	virtProxy
	Proxy used to copy arguments directly into kernel memory. More...

Protected Attributes inherited from System
KvmVM *const	kvmVM

PhysicalMemory	physmem

Enums::MemoryMode	memoryMode

const unsigned int	_cacheLineSize

uint64_t	workItemsBegin

uint64_t	workItemsEnd

uint32_t	numWorkIds

std::vector< bool >	activeCpus

std::vector< MasterInfo >	masters
	This array is a per-system list of all devices capable of issuing a memory system request and an associated string for each master id. More...

ThermalModel *	thermalModel

Params *	_params

const AddrRange	_m5opRange
	Range for memory-mapped m5 pseudo ops. More...

Protected Attributes inherited from SimObject
const SimObjectParams *	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Detailed Description

This class contains linux specific system code (Loading, Events).

It points to objects that are the system binaries to load and patches them appropriately to work in simulator.

Definition at line 51 of file system.hh.

Member Typedef Documentation

◆ Params

typedef LinuxAlphaSystemParams LinuxAlphaSystem::Params

Definition at line 131 of file system.hh.

Constructor & Destructor Documentation

◆ LinuxAlphaSystem()

LinuxAlphaSystem::LinuxAlphaSystem ( Params * p )

Definition at line 64 of file system.cc.

Referenced by LinuxAlphaSystem::PrintThreadInfo::process().

◆ ~LinuxAlphaSystem()

LinuxAlphaSystem::~LinuxAlphaSystem ( )

Definition at line 159 of file system.cc.

References debugPrintkEvent, idleStartEvent, kernelPanicEvent, printThreadEvent, skipCacheProbeEvent, skipDelayLoopEvent, and skipIdeDelay50msEvent.

Member Function Documentation

◆ CommandLine()

Addr LinuxAlphaSystem::CommandLine ( ) const

inline

Definition at line 82 of file system.hh.

References Param().

Referenced by initState().

◆ EmptyPGE()

Addr LinuxAlphaSystem::EmptyPGE ( ) const

inline

Definition at line 77 of file system.hh.

◆ EmptyPGT()

Addr LinuxAlphaSystem::EmptyPGT ( ) const

inline

Definition at line 76 of file system.hh.

◆ InitrdSize()

Addr LinuxAlphaSystem::InitrdSize ( ) const

inline

Definition at line 84 of file system.hh.

References Param().

◆ InitrdStart()

Addr LinuxAlphaSystem::InitrdStart ( ) const

inline

Definition at line 83 of file system.hh.

References Param().

◆ InitStack()

Addr LinuxAlphaSystem::InitStack ( ) const

inline

Definition at line 75 of file system.hh.

◆ initState()

void LinuxAlphaSystem::initState ( )

virtual

Initialise the system.

The symbol swapper_pg_dir marks the beginning of the kernel and the location of bootloader passed arguments

Since we aren't using a bootloader, we have to copy the kernel arguments directly into the kernel's memory.

find the address of the est_cycle_freq variable and insert it so we don't through the lengthly process of trying to calculated it by using the PIT, RTC, etc.

EV5 only supports 127 ASNs so we are going to tell the kernel that the paritiuclar EV6 we have only supports 127 asns.

Todo:: At some point we should change ev5.hh and the palcode to support 255 ASNs.

Reimplemented from SimObject.

Definition at line 70 of file system.cc.

References addr, CommandLine(), SymbolTable::findAddress(), SimClock::Frequency, htole(), AlphaSystem::initState(), KernelStart, System::kernelSymtab, panic, params(), AlphaSystem::virtProxy, PortProxy::write(), and PortProxy::writeBlob().

◆ Param()

Addr LinuxAlphaSystem::Param ( ) const

inline

Definition at line 81 of file system.hh.

References ZeroPGE().

Referenced by CommandLine(), InitrdSize(), and InitrdStart().

◆ params()

const Params* LinuxAlphaSystem::params ( ) const

inline

Definition at line 142 of file system.hh.

References System::_params.

Referenced by initState().

◆ setDelayLoop()

void LinuxAlphaSystem::setDelayLoop ( ThreadContext * tc )

Definition at line 173 of file system.cc.

References addr, SymbolTable::findAddress(), Clocked::frequency(), ThreadContext::getCpuPtr(), ThreadContext::getVirtProxy(), AlphaISA::GuestByteOrder, AlphaSystem::intrFreq, System::kernelSymtab, and PortProxy::write().

Referenced by LinuxAlphaSystem::SkipDelayLoopEvent::process().

◆ setupFuncEvents()

void LinuxAlphaSystem::setupFuncEvents ( )

protectedvirtual

Setup all the function events.

Must be done after init() for Alpha since fixFuncEvent() requires a function port

Any time ide_delay_50ms, calibarte_delay or determine_cpu_caches is called just skip the function. Currently determine_cpu_caches only is used put information in proc, however if that changes in the future we will have to fill in the cache size variables appropriately.

Reimplemented from AlphaSystem.

Definition at line 120 of file system.cc.

References addr, debugPrintkEvent, SymbolTable::findAddress(), idleStartEvent, kernelPanicEvent, System::kernelSymtab, printThreadEvent, AlphaSystem::setupFuncEvents(), skipCacheProbeEvent, skipDelayLoopEvent, and skipIdeDelay50msEvent.

◆ StartAddr()

Addr LinuxAlphaSystem::StartAddr ( ) const

inline

Definition at line 79 of file system.hh.

◆ ZeroPGE()

Addr LinuxAlphaSystem::ZeroPGE ( ) const

inline

Definition at line 78 of file system.hh.

Referenced by Param().

Member Data Documentation

◆ CommandLineSize

const int LinuxAlphaSystem::CommandLineSize = 256

static

Definition at line 85 of file system.hh.

◆ debugPrintkEvent

Linux::DebugPrintkEvent* LinuxAlphaSystem::debugPrintkEvent

private

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

Definition at line 107 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ idleStartEvent

IdleStartEvent* LinuxAlphaSystem::idleStartEvent

private

Grab the PCBB of the idle process when it starts.

Definition at line 122 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ kernelPanicEvent

BreakPCEvent* LinuxAlphaSystem::kernelPanicEvent

private

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

Definition at line 90 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ KernelStart

Addr LinuxAlphaSystem::KernelStart

private

Addresses defining where the kernel bootloader places various elements.

Details found in include/asm-alpha/system.h

Definition at line 72 of file system.hh.

Referenced by initState().

◆ printThreadEvent

PrintThreadInfo* LinuxAlphaSystem::printThreadEvent

private

Event to print information about thread switches if the trace flag Thread is set.

Definition at line 119 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ skipCacheProbeEvent

SkipFuncEvent* LinuxAlphaSystem::skipCacheProbeEvent

private

Event to skip determine_cpu_caches() because we don't support the IPRs that the code can access to figure out cache sizes.

Definition at line 98 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ skipDelayLoopEvent

SkipDelayLoopEvent* LinuxAlphaSystem::skipDelayLoopEvent

private

Skip calculate_delay_loop() rather than waiting for this to be calculated.

Definition at line 113 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

◆ skipIdeDelay50msEvent

SkipFuncEvent* LinuxAlphaSystem::skipIdeDelay50msEvent

private

PC based event to skip the ide_delay_50ms() call.

Definition at line 101 of file system.hh.

Referenced by setupFuncEvents(), and ~LinuxAlphaSystem().

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

arch/alpha/linux/system.hh
arch/alpha/linux/system.cc

Classes

Public Types

Public Member Functions

Static Public Attributes

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ LinuxAlphaSystem()

◆ ~LinuxAlphaSystem()

Member Function Documentation

◆ CommandLine()

◆ EmptyPGE()

◆ EmptyPGT()

◆ InitrdSize()

◆ InitrdStart()

◆ InitStack()

◆ initState()

◆ Param()

◆ params()

◆ setDelayLoop()

◆ setupFuncEvents()

◆ StartAddr()

◆ ZeroPGE()

Member Data Documentation

◆ CommandLineSize

◆ debugPrintkEvent

◆ idleStartEvent

◆ kernelPanicEvent

◆ KernelStart

◆ printThreadEvent

◆ skipCacheProbeEvent

◆ skipDelayLoopEvent

◆ skipIdeDelay50msEvent