OTASimulationController Class Reference

#include <OTASimulationController.hh>

Inheritance diagram for OTASimulationController:

Collaboration diagram for OTASimulationController:

Public Member Functions
	OTASimulationController (SimulatorFrontend &frontend, const TTAMachine::Machine &machine, const TTAProgram::Program &program)
virtual	~OTASimulationController ()
Public Member Functions inherited from SimulationController
	SimulationController (SimulatorFrontend &frontend, const TTAMachine::Machine &machine, const TTAProgram::Program &program, bool fuResourceConflictDetection=true, bool detailedSimulation=false)
virtual	~SimulationController ()
virtual void	step (double count=1)
virtual void	next (int count=1)
virtual void	run ()
virtual void	runUntil (UIntWord address)
virtual void	reset ()
virtual InstructionAddress	programCounter () const
virtual MachineState &	machineState (int core=-1)
virtual const InstructionMemory &	instructionMemory (int core=-1) const
virtual std::string	registerFileValue (const std::string &rfName, int registerIndex=-1)
virtual SimValue	immediateUnitRegisterValue (const std::string &iuName, int index=-1)
virtual SimValue	FUPortValue (const std::string &fuName, const std::string &portName)
Public Member Functions inherited from TTASimulationController
	TTASimulationController (SimulatorFrontend &frontend, const TTAMachine::Machine &machine, const TTAProgram::Program &program)
virtual	~TTASimulationController ()
virtual void	prepareToStop (StopReason reason)
virtual unsigned int	stopReasonCount () const
virtual StopReason	stopReason (unsigned int index) const
virtual SimulationStatus	state () const
virtual InstructionAddress	lastExecutedInstruction (int coreId=-1) const
virtual ClockCycleCount	clockCount () const
virtual MemorySystem &	memorySystem (int coreId=-1)
virtual SimulatorFrontend &	frontend ()
virtual bool	automaticFinishImpossible () const
virtual std::set< InstructionAddress >	findProgramExitPoints (const TTAProgram::Program &program, const TTAMachine::Machine &machine) const

Protected Member Functions
void	advanceMachineCycle (unsigned pcAdd)
virtual bool	simulateCycle ()
Protected Member Functions inherited from TTASimulationController
	TTASimulationController (const TTASimulationController &)
	Copying not allowed.
TTASimulationController &	operator= (const TTASimulationController &)
	Assignment not allowed.

Additional Inherited Members
Public Types inherited from TTASimulationController
enum	SimulationStatus {   STA_INITIALIZING , STA_INITIALIZED , STA_RUNNING , STA_STOPPED ,   STA_FINISHED }
	The states of simulation. More...
Protected Types inherited from SimulationController
typedef std::vector< MachineState * >	MachineStateContainer
Protected Types inherited from TTASimulationController
typedef std::set< StopReason >	StopReasonContainer
	The container type for reasons why simulation stop was requested.
Protected Attributes inherited from SimulationController
MachineStateContainer	machineStates_
	The machine state models for the simulated cores.
std::vector< InstructionMemory * >	instructionMemories_
	The instruction memory models of cores.
Protected Attributes inherited from TTASimulationController
SimulatorFrontend &	frontend_
	Reference to the simulator frontend.
const TTAMachine::Machine &	sourceMachine_
	The simulated Machine Object Model.
const TTAProgram::Program &	program_
	Program object model of the simulated program.
bool	stopRequested_
	Flag indicating that simulation should stop.
StopReasonContainer	stopReasons_
	The set of reasons the simulation was stopped.
SimulationStatus	state_
	The current state of the simulation.
ClockCycleCount	clockCount_
	How many clock cycles have been simulated.
std::vector< InstructionAddress >	lastExecutedInstruction_
	The address of the last executed instruction.
InstructionAddress	initialPC_
	The address of the first executed instruction.
bool	automaticFinishImpossible_
	If this is true, simulation cannot be finished automatically.
InstructionAddress	firstIllegalInstructionIndex_
	The index of the first illegal instruction in the instruction sequence.

Detailed Description

Definition at line 40 of file OTASimulationController.hh.

Constructor & Destructor Documentation

OTASimulationController()

OTASimulationController::OTASimulationController	(	SimulatorFrontend &	frontend,
		const TTAMachine::Machine &	machine,
		const TTAProgram::Program &	program
	)

Definition at line 40 of file OTASimulationController.cc.

                                      :
    SimulationController (frontend, machine, program, false, false) {
}

~OTASimulationController()

OTASimulationController::~OTASimulationController ( )

virtual

Definition at line 47 of file OTASimulationController.cc.

                                                  {
}

Member Function Documentation

advanceMachineCycle()

void OTASimulationController::advanceMachineCycle ( unsigned  pcAdd )

protected

Definition at line 52 of file OTASimulationController.cc.

                                                           {
 
    const unsigned int core = 0;
    MachineState& machineState = *machineStates_[core];
    //InstructionMemory& imem = *instructionMemories_[core];
    MemorySystem& memorySystem = frontend_.memorySystem(core);
    GCUState& gcu = machineState.gcuState();
 
    machineState.endClockOfAllFUStates();
 
    if (!gcu.isIdle()) {
        gcu.endClock();
    }
 
    memorySystem.advanceClockOfLocalMemories();
    memorySystem.advanceClockOfSharedMemories();
    machineState.advanceClockOfAllFUStates();
 
    gcu.programCounter() += pcAdd;
    if (!gcu.isIdle())
        gcu.advanceClock();
 
    machineState.advanceClockOfAllGuardStates();
}

References GCUState::advanceClock(), MachineState::advanceClockOfAllFUStates(), MachineState::advanceClockOfAllGuardStates(), MemorySystem::advanceClockOfLocalMemories(), MemorySystem::advanceClockOfSharedMemories(), FUState::endClock(), MachineState::endClockOfAllFUStates(), TTASimulationController::frontend_, MachineState::gcuState(), FUState::isIdle(), SimulationController::machineState(), SimulationController::machineStates_, SimulatorFrontend::memorySystem(), TTASimulationController::memorySystem(), and GCUState::programCounter().

Referenced by simulateCycle().

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simulateCycle()

bool OTASimulationController::simulateCycle ( )

protectedvirtual

Simulates an instruction cycle, both its explicit and implicit instructions.

Reimplemented from SimulationController.

Definition at line 81 of file OTASimulationController.cc.

                                       {
 
    std::vector<InstructionAddress> lastExecutedInstructions =
        lastExecutedInstruction_;
 
    bool finished = false;
 
    int finishedCoreCount = 0;
 
    const unsigned int core = 0;
    MachineState& machineState = *machineStates_[core];
    InstructionMemory& imem = *instructionMemories_[core];
    GCUState& gcu = machineState.gcuState();
    const InstructionAddress pc = gcu.programCounter();
 
    try {
        machineState.clearBuses();
 
        bool exitPoint = false;
        if (imem.hasInstructionAt(pc)) {
            ExecutableInstruction& instruction = imem.instructionAt(pc);
            instruction.execute();
 
            lastExecutedInstructions[core] = pc;
 
            advanceMachineCycle(4);
 
            if (imem.hasImplicitInstructionsAt(pc)) {
                const auto& implInstructions = imem.implicitInstructionsAt(pc);
                for (size_t i = 0; i < implInstructions.size(); ++i) {
                    ExecutableInstruction& implInstruction =
                        *implInstructions.at(i);
                    implInstruction.execute();
                    exitPoint |= implInstruction.isExitPoint();
                    advanceMachineCycle(0);
                }
            }
 
            exitPoint |= instruction.isExitPoint();
        }
 
        // check if the instruction was a return point from the program or
        // the next executed instruction would be sequentially over the
        // instruction space (PC+1 would overflow out of the program)
        if (exitPoint ||
            gcu.programCounter() == firstIllegalInstructionIndex_) {
            machineState.setFinished();
            ++finishedCoreCount;
        }
    } catch (const Exception& e) {
        frontend_.reportSimulatedProgramError(
            SimulatorFrontend::RES_FATAL,
            e.errorMessage());
        prepareToStop(SRE_RUNTIME_ERROR);
        return false;
    }
 
    if (finishedCoreCount > 0)
        finished = true;
 
    frontend_.eventHandler().handleEvent(SimulationEventHandler::SE_CYCLE_END);
 
    lastExecutedInstruction_ = lastExecutedInstructions;
 
    // this is the instruction count in case of OTA
    ++clockCount_;
 
    if (finished) {
        state_ = STA_FINISHED;
        stopRequested_ = true;
        return false;
    }
 
    frontend_.eventHandler().handleEvent(
        SimulationEventHandler::SE_NEW_INSTRUCTION);
    return true;
}

References advanceMachineCycle(), MachineState::clearBuses(), TTASimulationController::clockCount_, Exception::errorMessage(), SimulatorFrontend::eventHandler(), ExecutableInstruction::execute(), TTASimulationController::firstIllegalInstructionIndex_, TTASimulationController::frontend_, MachineState::gcuState(), Informer::handleEvent(), InstructionMemory::hasImplicitInstructionsAt(), InstructionMemory::hasInstructionAt(), InstructionMemory::implicitInstructionsAt(), InstructionMemory::instructionAt(), SimulationController::instructionMemories_, ExecutableInstruction::isExitPoint(), TTASimulationController::lastExecutedInstruction_, SimulationController::machineState(), SimulationController::machineStates_, TTASimulationController::prepareToStop(), GCUState::programCounter(), SimulatorFrontend::reportSimulatedProgramError(), SimulatorFrontend::RES_FATAL, SimulationEventHandler::SE_CYCLE_END, SimulationEventHandler::SE_NEW_INSTRUCTION, MachineState::setFinished(), SRE_RUNTIME_ERROR, TTASimulationController::STA_FINISHED, TTASimulationController::state_, and TTASimulationController::stopRequested_.

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

• OTASimulationController.hh
• OTASimulationController.cc