#include <OneCycleOperationExecutor.hh>

Inheritance diagram for OneCycleOperationExecutor:

Collaboration diagram for OneCycleOperationExecutor:

Public Member Functions
	OneCycleOperationExecutor (FUState &parent)

virtual	~OneCycleOperationExecutor ()

virtual int	latency () const

virtual void	startOperation (Operation &op)

virtual void	advanceClock ()

virtual OperationExecutor *	copy ()

virtual void	setContext (OperationContext &context)

Public Member Functions inherited from OperationExecutor
	OperationExecutor ()

	OperationExecutor (FUState &parent)

virtual	~OperationExecutor ()

FUState &	parent () const

void	setParent (FUState &parent)

void	addBinding (int io, PortState &port)

PortState &	binding (int io) const

bool	hasPendingOperations () const

virtual void	reset ()

Private Member Functions
OneCycleOperationExecutor &	operator= (const OneCycleOperationExecutor &)
	Assignment not allowed.

void	initializeIOVector ()

Private Attributes
OperationContext *	context_
	Operation context.

Operation *	operation_
	Operation to be executed next.

SimValue **	io_
	Inputs and outputs for the operation.

bool	ready_
	True if all the results are ready.

bool	ioVectorInitialized_
	True if the io_ vector is initialized-.

Additional Inherited Members
Protected Attributes inherited from OperationExecutor
std::vector< PortState * >	bindings_
	PortStates that are bound to a certain input or output operand.

bool	hasPendingOperations_
	This is set to true if the OperationExecutor is not in 'idle' mode.

Detailed Description

Operation executor for one cycle latency operations.

Definition at line 45 of file OneCycleOperationExecutor.hh.

Constructor & Destructor Documentation

◆ OneCycleOperationExecutor()

OneCycleOperationExecutor::OneCycleOperationExecutor ( FUState & parent )

explicit

Constructor.

Parameters

parent Parent of the executor.

Definition at line 55 of file OneCycleOperationExecutor.cc.

                                                                    : 
    OperationExecutor(parent), context_(NULL), operation_(NULL), 
    io_(NULL), ready_(false), ioVectorInitialized_(false) {
}

◆ ~OneCycleOperationExecutor()

OneCycleOperationExecutor::~OneCycleOperationExecutor ( )

virtual

Destructor.

Definition at line 63 of file OneCycleOperationExecutor.cc.

                                                      {
    delete[] io_;
    io_ = NULL;
}

References io_.

Member Function Documentation

◆ advanceClock()

void OneCycleOperationExecutor::advanceClock ( )

virtual

Advances clock by one cycle.

Implements OperationExecutor.

Definition at line 113 of file OneCycleOperationExecutor.cc.

                                        {
    operation_ = NULL;
    hasPendingOperations_ = false;
}

References OperationExecutor::hasPendingOperations_, and operation_.

◆ copy()

OperationExecutor * OneCycleOperationExecutor::copy ( )

virtual

Copies OperationExecutor.

Returns: The copied OperationExecutor.

Implements OperationExecutor.

Definition at line 124 of file OneCycleOperationExecutor.cc.

                                {
    return new OneCycleOperationExecutor(*this);
}

◆ initializeIOVector()

void OneCycleOperationExecutor::initializeIOVector ( )

inlineprivate

Initializes the operation input/output vector.

The I/O vector points directly to the function unit port register values. This is possible because there cannot be any other pending operations at once because of latency of 1.

Definition at line 86 of file OneCycleOperationExecutor.cc.

                                              {
    if (ioVectorInitialized_)
        return;
    io_ = new SimValue*[bindings_.size()];
    for (size_t i = 0; i < bindings_.size(); ++i) {
        io_[i] = const_cast<SimValue*>(&bindings_[i]->value());
    }
    ioVectorInitialized_ = true;
}

References OperationExecutor::bindings_, io_, and ioVectorInitialized_.

Referenced by startOperation().

◆ latency()

int OneCycleOperationExecutor::latency ( ) const

virtual

Returns the latency of the executor.

Returns: The latency of the executor.

Definition at line 74 of file OneCycleOperationExecutor.cc.

                                         {
    return 1;
}

◆ operator=()

OneCycleOperationExecutor & OneCycleOperationExecutor::operator= ( const OneCycleOperationExecutor & )

private

Assignment not allowed.

◆ setContext()

void OneCycleOperationExecutor::setContext ( OperationContext & context )

virtual

Sets new context for the OperationExecutor.

Parameters

context New OperationContext.

Implements OperationExecutor.

Definition at line 134 of file OneCycleOperationExecutor.cc.

                                                               {
    context_ = &context;
}

References context_.

◆ startOperation()

void OneCycleOperationExecutor::startOperation ( Operation & op )

virtual

Starts the execution of the operation.

Parameters

op	Operation to be triggered.

Implements OperationExecutor.

Definition at line 102 of file OneCycleOperationExecutor.cc.

                                                       {
    operation_ = &op;
    initializeIOVector();
    ready_ = operation_->simulateTrigger(io_, *context_);
    hasPendingOperations_ = !ready_;
}