CPUCore is responsible for the simulation of a CPU core in ETISS. More...

#include <CPUCore.h>

Inheritance diagram for etiss::CPUCore:

Collaboration diagram for etiss::CPUCore:

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Classes
class	InterruptVectorWrapper

Public Member Functions
	~CPUCore ()

void	reset (etiss::uint64 *startindex)
	Reset the CPU state. More...

ETISS_CPU *	getState ()
	Get the CPU state structure containing instruction pointer, frequency, etc. More...

virtual std::shared_ptr< VirtualStruct >	getStruct ()
	Get the virtual structure of this CPUCore instance. More...

virtual std::shared_ptr< etiss::mm::MMU >	getMMU ()
	Get the Memory Management Unit(MMU) of this CPUCore instance. More...

etiss::InterruptVector *	getInterruptVector ()
	Get the interrupt vector of simulated CPU. More...

etiss::InterruptEnable *	getInterruptEnable ()

std::shared_ptr< etiss::CPUArch >	getArch ()
	Get the CPU architecture. More...

void	set (std::shared_ptr< etiss::JIT > jit)
	Set the JIT plug-in used for execution. More...

void	setTimer (bool on)
	Enable or disable the timer of the CPU. More...

void	addPlugin (std::shared_ptr< etiss::Plugin > plugin)
	Adds a plug-in to the core simulator. More...

void	removePlugin (std::shared_ptr< etiss::Plugin > plugin)
	Remove a plug-in from the core simulator. More...

void	removePlugins ()
	Remove all plug-ins from the core simulator. More...

void	setBlockChainCount (unsigned bcc)
	Set the number of blocks jumps in between the coroutines are not executed. More...

etiss::int32	execute (ETISS_System &system)
	Start the simulation of the CPU core for the system model. More...

etiss::int32	execute (etiss::System &system)
	Start the simulation of the CPU core for the system model. More...

const std::string &	getName ()
	Get the name of the CPUCore instance. More...

const int &	getID ()
	Get the ID of the CPUCore instance. More...

std::string	getJITName ()
	Get the name of the JIT plug-in used by the CPUCore instance. More...

std::shared_ptr< etiss::JIT >	getJIT ()
	Get a reference to the JIT plugin. More...

const std::string &	toString () const
	Get a string representation of the object. More...

std::shared_ptr< Plugin >	getPlugin (std::string name)
	returns the plugin with the given name. More...

std::list< std::shared_ptr< Plugin > > const *	getPlugins ()
	returns the list of all plugins. More...

Public Member Functions inherited from etiss::VirtualStructSupport
virtual	~VirtualStructSupport ()

Public Member Functions inherited from etiss::ToString
	ToString ()

virtual	~ToString ()

Static Public Member Functions
static std::shared_ptr< CPUCore >	create (std::string archname, std::string instancename="", std::map< std::string, std::string > archoptions=std::map< std::string, std::string >())
	Create a CPUCore instance. More...

static int	getNextID ()

static std::list< std::string >	list ()
	returns a list of currently present CPU cores More...

Public Attributes
uint64_t	instrcounter

Private Member Functions
	CPUCore (std::shared_ptr< etiss::CPUArch > arch)
	Private constructor of CPUCore. More...

Private Attributes
std::shared_ptr< etiss::CPUArch >	arch_

std::string	name_
	cpu architecture of this cpu core. may never be 0 or changed More...

const int	id_
	name of the cpu core More...

ETISS_CPU *	cpu_
	ID of the cpu core. More...

std::shared_ptr< etiss::VirtualStruct >	vcpu_
	cpu state structure allocated by arch_ More...

etiss::InterruptVector *	intvector_

InterruptVectorWrapper *	intwrapper_
	cpu interrupt vector derived from cpu_ and allocated by arch_ More...

etiss::InterruptEnable *	intenable_
	wrapped interrupt vector to allow interrupt listening More...

bool	timer_enabled_

std::shared_ptr< etiss::JIT >	jit_
	if true the a timer plugin allocated by arch_ will be added in CPUCore::execute More...

std::mutex	mu_
	JIT instance to use. may be 0 (etiss::getDefaultJIT() will be used in that case) More...

std::list< std::shared_ptr< Plugin > >	plugins
	mutex to lock the configuration of this cpu core. More...

unsigned	bcc_
	list of all plugins More...

unsigned	blockCounter

unsigned	exception_skip_count_

int	blockCacheLimit_

bool	mmu_enabled_
	TODO: possibility to limit the cache size. More...

std::shared_ptr< etiss::mm::MMU >	mmu_

Static Private Attributes
static std::mutex	instances_mu_
	this field is always present to maintain API compatibility but it is only used if ETISS_CPUCORE_DBG_APPROXIMATE_INSTRUCTION_COUNTER is set to 1 More...

static std::list< std::weak_ptr< CPUCore > >	instances_
	mutext for access to a list of cpu core instances More...

Friends
class	CPUArchRegListenerInterface

class	InterruptVectorWrapper

Detailed Description

CPUCore is responsible for the simulation of a CPU core in ETISS.

CPUCore is responsible for the simulation of a CPU core in ETISS. An instance of CPUCore is always tied to a single CPU architecture. If plug-ins should be active during the simulation they need to be added to the CPUCore instance. Before the simulation can be start a JIT compilier must be present if the default JIT plug-in should not be used (etiss::getDefaultJIT()). A JIT plug-in must be specified with CPUCore::set(). To start the simulation of a system model with a CPUCore instance call CPUCore::execute().

etiss::Initializer initialzer(); // initialize ETISS
 
{ // ensure that the object using ETISS are deleted before the shutdown of ETISS
 
  // create CPU simulator instance for the or1k architecture
  std::shared_ptr<etiss:CPUCore> cpu = etiss::CPUCore::create("or1k", "core0");
 
  cpu.set(etiss::getJIT("GCCJIT"); // set JIT plug-in to be used for the simulation
 
  cpu.addPlugin(etiss::getPlugin("PrintInstruction")); // add a plug-in to the simulation
 
  MySystemModel system(); // instance of the system model to be simulated
 
  cpu.execute(system); // run the simulation
}

See also: ETISS_System; etiss::System

Definition at line 112 of file CPUCore.h.

Constructor & Destructor Documentation

◆ CPUCore()

CPUCore::CPUCore ( std::shared_ptr< etiss::CPUArch > arch )

private

Private constructor of CPUCore.

To create a new instance of CPUCore use the CPUCore::create().

Parameters

name	The name of the CPUCore instance.
arch	Pointer to the CPU architecture used by the CPU core simulator.

Definition at line 139 of file CPUCore.cpp.

References arch_, bcc_, blockCacheLimit_, blockCounter, cpu_, exception_skip_count_, instrcounter, ETISS_CPU::instructionPointer, InterruptVectorWrapper, intvector_, intwrapper_, etiss::VirtualStruct::Field::P, etiss::VirtualStruct::Field::R, timer_enabled_, uint64_t, v, vcpu_, and etiss::VirtualStruct::Field::W.

Referenced by create().

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◆ ~CPUCore()

CPUCore::~CPUCore ( )

Definition at line 294 of file CPUCore.cpp.

References arch_, cpu_, intvector_, intwrapper_, and vcpu_.

Member Function Documentation

◆ addPlugin()

void CPUCore::addPlugin ( std::shared_ptr< etiss::Plugin > plugin )

Adds a plug-in to the core simulator.

See the different plug-in classes, for information on how the plug-in influences the simulation.

Attention: The same plug-in may not be added multiple times.

See also: etiss::TransTranslatorPlugin; etiss::CoroutinePlugin; etiss::SystemWrapperPlugin

Parameters

plugin Pointer to the plug-in that shall be added.

Definition at line 191 of file CPUCore.cpp.

References getName(), etiss::log(), mu_, plugins, and etiss::WARNING.

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◆ create()

std::shared_ptr< CPUCore > CPUCore::create	(	std::string	archname,
		std::string	instancename = `""`,
		std::map< std::string, std::string >	archoptions = `std::map<std::string, std::string>()`
	)

static

Create a CPUCore instance.

This is the factory method to create a new CPUCore instance for a specific CPU architecture.

Parameters

archname	The name of a CPUArch plug-in. This plug-in must be present in ETISS in order to create the CPUCore instance.
instancename	A descriptive name for the new instance.
archoptions	A key value map with options for the CPUArch plug-in.

Returns: A pointer to the new instance or 0, if the given architecture is not present

Parameters

archoptions obsolet: now defined by ID - "core[ID]"

Definition at line 250 of file CPUCore.cpp.

References CPUCore(), etiss::FATALERROR, etiss::forceInitialization(), etiss::getCPUArch(), instances_, instances_mu_, and etiss::log().

Referenced by main().

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◆ execute() [1/2]

etiss::int32 etiss::CPUCore::execute ( etiss::System & system )

inline

Start the simulation of the CPU core for the system model.

This method works the same as execute(ETISS_System & system), but uses the etiss::System interface to access the model.

See also: execute(ETISS_System & system)

Returns: A return code as result of the simulation (ReturnCode.h)

Definition at line 287 of file CPUCore.h.

References execute(), and etiss::wrap().

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◆ execute() [2/2]

etiss::int32 CPUCore::execute ( ETISS_System & system )

Start the simulation of the CPU core for the system model.

This method starts the simulation of the CPU core for the provided system model. It uses the C-structure interface to access the system model. This method is (like any other methods of this class) thread-safe. However if any method of this class including this one is called while this method is running, it will block until this method is finished returns.

Returns: A return code as result of the simulation (ReturnCode.h)

Definition at line 504 of file CPUCore.cpp.

References ETISS_CPU::_etiss_private_handle_, arch_, bcc_, c, etiss::cfg(), clock(), coverage_map, cpu_, ETISS_CPU::cpuCycleTime_ps, ETISS_CPU::cpuTime_ps, ETISS_CPU::cycles, double, etiss::BlockLink::end, etiss::ERROR, etiss_CPUCore_handleException(), ETISS_MAX_RESOURCES, ETISS_System_isvalid(), etiss::BlockLink::execBlock, etiss::FATALERROR, float, etiss::Configuration::get(), etiss::Translation::getBlockFast(), etiss::Plugin::getPluginName(), ETISS_System::handle, etiss::INFO, etiss::Translation::init(), instrcounter, ETISS_CPU::instructionPointer, etiss::Configuration::isSet(), jit_, likely, etiss::log(), max(), mmu_, mmu_enabled_, mu_, name_, etiss::mm::NOERROR, plugins, ETISS_CPU::resources, ETISS_CPU::resourceUsages, ETISS_System::syncTime, timer_enabled_, etiss::toString(), uint64_t, unlikely, vcpu_, verifyJITPragmaPack(), verifyJITSizeOf(), etiss::WARNING, and etiss::mm::X_ACCESS.

Referenced by execute().

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◆ getArch()

std::shared_ptr<etiss::CPUArch> etiss::CPUCore::getArch ( )

inline

Get the CPU architecture.

Returns: A pointer to the CPU architecture.

Definition at line 197 of file CPUCore.h.

References arch_.

◆ getID()

const int& etiss::CPUCore::getID ( )

inline

Get the ID of the CPUCore instance.

Returns: The ID string of the instance.

Definition at line 308 of file CPUCore.h.

References id_.

◆ getInterruptEnable()

etiss::InterruptEnable* etiss::CPUCore::getInterruptEnable ( )

inline

Definition at line 190 of file CPUCore.h.

References intenable_.

◆ getInterruptVector()

etiss::InterruptVector* etiss::CPUCore::getInterruptVector ( )

inline

Get the interrupt vector of simulated CPU.

Returns: A pointer to the interrupt vector of the simulated CPU.

Definition at line 188 of file CPUCore.h.

References intwrapper_.

◆ getJIT()

std::shared_ptr<etiss::JIT> etiss::CPUCore::getJIT ( )

inline

Get a reference to the JIT plugin.

Definition at line 331 of file CPUCore.h.

References jit_.

◆ getJITName()

std::string etiss::CPUCore::getJITName ( )

inline

Get the name of the JIT plug-in used by the CPUCore instance.

Returns: Name string of the JIT plug-in;

Definition at line 315 of file CPUCore.h.

References jit_.

◆ getMMU()

virtual std::shared_ptr<etiss::mm::MMU> etiss::CPUCore::getMMU ( )

inlinevirtual

Get the Memory Management Unit(MMU) of this CPUCore instance.

MMU is responsible to translate virtual address to physical address, which is essential to support multi-taking operationg systems, such as Linux

Returns: A shared pointer to the MMU

Definition at line 181 of file CPUCore.h.

References mmu_.

Referenced by ETISS_SIGNAL_MMU().

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◆ getName()

const std::string& etiss::CPUCore::getName ( )

inline

Get the name of the CPUCore instance.

Returns: The name string of the instance.

Definition at line 301 of file CPUCore.h.

References name_.

Referenced by addPlugin().

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◆ getNextID()

int CPUCore::getNextID ( )

static

Definition at line 135 of file CPUCore.cpp.

References currID.

Referenced by etiss::CPUArch::CPUArch().

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◆ getPlugin()

std::shared_ptr<Plugin> etiss::CPUCore::getPlugin ( std::string name )

inline

returns the plugin with the given name.

Definition at line 341 of file CPUCore.h.

References plugins.

◆ getPlugins()

std::list<std::shared_ptr<Plugin> > const* etiss::CPUCore::getPlugins ( )

inline

returns the list of all plugins.

Definition at line 354 of file CPUCore.h.

References plugins.

◆ getState()

ETISS_CPU* etiss::CPUCore::getState ( )

inline

Get the CPU state structure containing instruction pointer, frequency, etc.

Returns: A pointer to the architecture specific cpu state structure

Definition at line 160 of file CPUCore.h.

References cpu_.

◆ getStruct()

virtual std::shared_ptr<VirtualStruct> etiss::CPUCore::getStruct ( )

inlinevirtual

Get the virtual structure of this CPUCore instance.

The virtual structure allows the to access the fields of the CPU structure and sub structures (e.g. plug-ins) used by CPUCore.

Returns: A pointer to the virtual structure.

Implements etiss::VirtualStructSupport.

Definition at line 170 of file CPUCore.h.

References vcpu_.

Referenced by etiss::plugin::InstructionAccurateCallback::call(), etiss::plugin::errorInjection::BlockAccurateHandler::execute(), etiss::plugin::VariableValueLogger::finalizeInstrSet(), etiss::plugin::gdb::Server::handlePacket(), etiss::CPUArchRegListenerInterface::signalChangedRegisterValue(), and etiss::plugin::VariableValueLogger::writeValue().

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◆ list()

std::list< std::string > CPUCore::list ( )

static

returns a list of currently present CPU cores

Definition at line 276 of file CPUCore.cpp.

References instances_, and instances_mu_.

Referenced by etiss::shutdown().

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◆ removePlugin()

void CPUCore::removePlugin ( std::shared_ptr< etiss::Plugin > plugin )

Remove a plug-in from the core simulator.

Parameters

plugin Pointer to the plug-in that shall be removed.

Definition at line 223 of file CPUCore.cpp.

References mu_, etiss::Plugin::plugin_core_, plugins, and etiss::Plugin::removedFromCPUCore().

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◆ removePlugins()

void etiss::CPUCore::removePlugins ( )

inline

Remove all plug-ins from the core simulator.

Definition at line 252 of file CPUCore.h.

References mu_, and plugins.

◆ reset()

void etiss::CPUCore::reset ( etiss::uint64 * startindex )

inline

Reset the CPU state.

Note: startindex != start address

Todo:: Add explanation of start index.

Definition at line 153 of file CPUCore.h.

References arch_, and cpu_.

◆ set()

void etiss::CPUCore::set ( std::shared_ptr< etiss::JIT > jit )

inline

Set the JIT plug-in used for execution.

If no JIT plug-in is specified then the first loaded JIT plug-in is used.

See also: etiss::loadJIT; etiss::getJIT; etiss::listJIT

Parameters

jit	A pointer to the JIT plug-in, that should be used.

Definition at line 211 of file CPUCore.h.

References jit_.

◆ setBlockChainCount()

void etiss::CPUCore::setBlockChainCount ( unsigned bcc )

inline

Set the number of blocks jumps in between the coroutines are not executed.

Definition at line 262 of file CPUCore.h.

References bcc_.

◆ setTimer()

void etiss::CPUCore::setTimer ( bool on )

inline

Enable or disable the timer of the CPU.

Note: Has no effect if the architecture does not support a timer.

Parameters

on	true to enable the timer / false to disable the timer

Definition at line 220 of file CPUCore.h.

References mu_, and timer_enabled_.

◆ toString()

const std::string& etiss::CPUCore::toString ( ) const

inline

Get a string representation of the object.

Definition at line 336 of file CPUCore.h.

References name_.

Friends And Related Function Documentation

◆ CPUArchRegListenerInterface

staticprivate

this field is always present to maintain API compatibility but it is only used if ETISS_CPUCORE_DBG_APPROXIMATE_INSTRUCTION_COUNTER is set to 1

Definition at line 411 of file CPUCore.h.

Referenced by create(), and list().

◆ instrcounter

uint64_t etiss::CPUCore::instrcounter

Definition at line 407 of file CPUCore.h.

Referenced by CPUCore(), and execute().

◆ intenable_

etiss::InterruptEnable* etiss::CPUCore::intenable_

private

wrapped interrupt vector to allow interrupt listening

Definition at line 392 of file CPUCore.h.

Referenced by getInterruptEnable().

std::shared_ptr<etiss::mm::MMU> etiss::CPUCore::mmu_

private

Definition at line 404 of file CPUCore.h.

Referenced by execute(), and getMMU().

◆ mmu_enabled_

bool etiss::CPUCore::mmu_enabled_

private

TODO: possibility to limit the cache size.

Definition at line 403 of file CPUCore.h.

Referenced by execute().

◆ mu_

std::mutex etiss::CPUCore::mu_

private

JIT instance to use. may be 0 (etiss::getDefaultJIT() will be used in that case)

Definition at line 396 of file CPUCore.h.

Referenced by addPlugin(), execute(), removePlugin(), removePlugins(), and setTimer().

◆ name_

std::string etiss::CPUCore::name_

private

cpu architecture of this cpu core. may never be 0 or changed

Definition at line 386 of file CPUCore.h.

Referenced by execute(), getName(), and toString().

◆ plugins

std::list<std::shared_ptr<Plugin> > etiss::CPUCore::plugins

private

mutex to lock the configuration of this cpu core.

etiss::CPUCore::execution holds this lock during execution

Definition at line 398 of file CPUCore.h.

Referenced by addPlugin(), execute(), getPlugin(), getPlugins(), removePlugin(), and removePlugins().

◆ timer_enabled_

bool etiss::CPUCore::timer_enabled_

private

Definition at line 393 of file CPUCore.h.

Referenced by CPUCore(), execute(), and setTimer().

◆ vcpu_

std::shared_ptr<etiss::VirtualStruct> etiss::CPUCore::vcpu_

private

cpu state structure allocated by arch_

Definition at line 389 of file CPUCore.h.

Referenced by CPUCore(), execute(), getStruct(), and ~CPUCore().

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

/home/runner/work/etiss/etiss/include/etiss/CPUCore.h
/home/runner/work/etiss/etiss/src/CPUCore.cpp

Classes

Public Member Functions

Static Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ CPUCore()

◆ ~CPUCore()

Member Function Documentation

◆ addPlugin()

◆ create()

◆ execute() [1/2]

◆ execute() [2/2]

◆ getArch()

◆ getID()

◆ getInterruptEnable()

◆ getInterruptVector()

◆ getJIT()

◆ getJITName()

◆ getMMU()

◆ getName()

◆ getNextID()

◆ getPlugin()

◆ getPlugins()

◆ getState()

◆ getStruct()

◆ list()

◆ removePlugin()

◆ removePlugins()

◆ reset()

◆ set()

◆ setBlockChainCount()

◆ setTimer()

◆ toString()

Friends And Related Function Documentation

◆ CPUArchRegListenerInterface

◆ InterruptVectorWrapper

Member Data Documentation

◆ arch_

◆ bcc_

◆ blockCacheLimit_

◆ blockCounter

◆ cpu_

◆ exception_skip_count_

◆ id_

◆ instances_

◆ instances_mu_

◆ instrcounter

◆ intenable_

◆ intvector_

◆ intwrapper_

◆ jit_

◆ mmu_

◆ mmu_enabled_

◆ mu_

◆ name_

◆ plugins

◆ timer_enabled_

◆ vcpu_