SlotField Class Reference

#include <SlotField.hh>

Inheritance diagram for SlotField:

Collaboration diagram for SlotField:

Public Member Functions
virtual	~SlotField ()
MoveSlot *	parent () const
void	addSocketEncoding (SocketEncoding &encoding)
void	removeSocketEncoding (SocketEncoding &encoding)
int	socketEncodingCount () const
SocketEncoding &	socketEncoding (int index) const
bool	hasSocketEncoding (const std::string &socket) const
SocketEncoding &	socketEncoding (const std::string &socket) const
void	setNoOperationEncoding (NOPEncoding &encoding)
void	unsetNoOperationEncoding ()
bool	hasNoOperationEncoding () const
NOPEncoding &	noOperationEncoding () const
BinaryEncoding::Position	componentIDPosition () const
virtual int	width () const
virtual int	childFieldCount () const
virtual InstructionField &	childField (int position) const
virtual void	loadState (const ObjectState *state)
virtual ObjectState *	saveState () const
Public Member Functions inherited from InstructionField
virtual	~InstructionField ()
InstructionField *	parent () const
int	bitPosition () const
int	relativePosition () const
virtual void	setRelativePosition (int position)
void	setExtraBits (int bits)
int	extraBits () const
Public Member Functions inherited from Serializable
virtual	~Serializable ()

Static Public Attributes
static const std::string	OSNAME_SLOT_FIELD = "slot_field"
	ObjectState name for slot field.
static const std::string	OSKEY_COMPONENT_ID_POSITION = "comp_id_pos"
	ObjectState attribute key for component ID position.
Static Public Attributes inherited from InstructionField
static const std::string	OSNAME_INSTRUCTION_FIELD = "instr_field"
	ObjectState name for instruction field.
static const std::string	OSKEY_EXTRA_BITS = "extra_bits"
	ObjectState attribute key for the number of extra bits.
static const std::string	OSKEY_POSITION = "position"
	ObjectState attribute key for the relative position of the field.

Protected Member Functions
	SlotField (BinaryEncoding::Position componentIDPos, MoveSlot &parent)
	SlotField (const ObjectState *state, MoveSlot &parent)
Protected Member Functions inherited from InstructionField
	InstructionField (InstructionField *parent)
	InstructionField (const ObjectState *state, InstructionField *parent)
void	setParent (InstructionField *parent)

Private Types
typedef std::vector< SocketEncoding * >	SocketEncodingTable
	A container type for socket encodings.

Private Member Functions
void	clearSocketEncodings ()
void	clearNoOperationEncoding ()

Private Attributes
NOPEncoding *	nopEncoding_
	The NOP encoding.
SocketEncodingTable	encodings_
	The container for socket encodings.
BinaryEncoding::Position	componentIDPos_
	Position of the socket and bridge IDs within the field.

Additional Inherited Members
Static Protected Member Functions inherited from InstructionField
static void	reorderSubfields (ObjectState *state)

Detailed Description

SlotField is an abstract base class that models the properties common to SourceField and DestinationField classes.

SlotField contains and manages the encodings for sockets. Encodings for different sources and destinations consists of two parts: socket ID and optional socket code. Socket ID determines the socket. Socket code determines the port (and opcode) the socket is connected to. Socket ID may be on either left or right side of the socket code in the source or destination field. If socket ID is on the left side of socket code, socket ID is aligned to the left end of the whole source/destination field. In the other case, socket ID is aligned to the right end of the source/destination field.

Definition at line 58 of file SlotField.hh.

Member Typedef Documentation

SocketEncodingTable

typedef std::vector<SocketEncoding*> SlotField::SocketEncodingTable

private

A container type for socket encodings.

Definition at line 99 of file SlotField.hh.

Constructor & Destructor Documentation

~SlotField()

SlotField::~SlotField ( )

virtual

The destructor.

Definition at line 88 of file SlotField.cc.

                      {
    clearSocketEncodings();
    clearNoOperationEncoding();
}

References clearNoOperationEncoding(), and clearSocketEncodings().

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SlotField() [1/2]

SlotField::SlotField ( BinaryEncoding::Position  componentIDPos, MoveSlot &  parent  )

protected

The constructor.

Parameters

componentIDPos	Position of the socket (or bridge) ID within the source or destination field.
parent	The parent move slot.

Definition at line 60 of file SlotField.cc.

                      :
    InstructionField(&parent), nopEncoding_(NULL), 
    componentIDPos_(componentIDPos) {
}

SlotField() [2/2]

SlotField::SlotField ( const ObjectState *  state, MoveSlot &  parent  )

protected

The constructor.

Loads the state of the object from the given ObjectState tree.

Parameters

state	The ObjectState tree.
parent	The parent move slot.

Exceptions

ObjectStateLoadingException

If an error occurs while loading the state.

Definition at line 78 of file SlotField.cc.

    : InstructionField(state, &parent),
      nopEncoding_(NULL),
      componentIDPos_(BinaryEncoding::LEFT) {
    loadState(state);
}

References loadState().

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Member Function Documentation

addSocketEncoding()

void SlotField::addSocketEncoding

(

SocketEncoding &

encoding

)

Adds the given socket encoding.

This method is to be called from the constructor of SocketEncoding.

Parameters

encoding

The socket encoding to be added.

Exceptions

ObjectAlreadyExists

If the field already has an encoding for the same socket or if the encoding is already assigned to another socket.

Definition at line 121 of file SlotField.cc.

                                                     {
    // verify that this is called from SocketEncoding constructor
    assert(encoding.parent() == NULL);
 
    if (hasSocketEncoding(encoding.socketName()) ||
    !BEMTester::canAddComponentEncoding(
        *this, encoding.encoding(), encoding.extraBits())) {
    const string procName = "SlotField::addSocketEncoding";
    throw ObjectAlreadyExists(__FILE__, __LINE__, procName);
    }
 
    encodings_.push_back(&encoding);
}

References assert, BEMTester::canAddComponentEncoding(), Encoding::encoding(), encodings_, Encoding::extraBits(), hasSocketEncoding(), SocketEncoding::parent(), and SocketEncoding::socketName().

Referenced by SocketEncoding::setEncoding(), SocketEncoding::SocketEncoding(), and SocketEncoding::SocketEncoding().

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childField()

InstructionField & SlotField::childField ( int  position ) const

virtual

Always throws OutOfRange because slot fields do not have any child fields.

Returns

Never returns.

Exceptions

OutOfRange

Always throws.

Reimplemented from InstructionField.

Definition at line 345 of file SlotField.cc.

                               {
    const string procName = "SlotField::childField";
    throw OutOfRange(__FILE__, __LINE__, procName);
}

childFieldCount()

int SlotField::childFieldCount ( ) const

virtual

Always returns 0 because slot fields do not have any child fields.

Returns

0.

Implements InstructionField.

Definition at line 333 of file SlotField.cc.

                                 {
    return 0;
}

clearNoOperationEncoding()

void SlotField::clearNoOperationEncoding ( )

private

Deletes the NOP encoding if one exists.

Definition at line 422 of file SlotField.cc.

                                    {
    if (hasNoOperationEncoding()) {
        delete nopEncoding_;
    }
}

References hasNoOperationEncoding(), and nopEncoding_.

Referenced by loadState(), and ~SlotField().

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clearSocketEncodings()

void SlotField::clearSocketEncodings ( )

private

Clears all the socket encodings from the slot field.

Definition at line 413 of file SlotField.cc.

                                {
    SequenceTools::deleteAllItems(encodings_);
}

References SequenceTools::deleteAllItems(), and encodings_.

Referenced by loadState(), and ~SlotField().

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componentIDPosition()

BinaryEncoding::Position SlotField::componentIDPosition

(

)

const

Returns the position of the component ID within the slot field.

Returns

Position of the component ID.

Definition at line 296 of file SlotField.cc.

                                     {
    return componentIDPos_;
}

References componentIDPos_.

Referenced by BEMTester::calculateAlignment(), DestinationField::DestinationField(), CodeCompressorPlugin::encodeImmediateTerminal(), CodeCompressorPlugin::encodeNOP(), CodeCompressorPlugin::encodeSlotField(), DefaultDecoderGenerator::portCodeCondition(), printSlotFieldEncodings(), printSourceFieldEncodings(), DefaultDecoderGenerator::rfOpcodeFromSrcOrDstField(), saveState(), SourceField::SourceField(), and DefaultDecoderGenerator::writeControlRulesOfFUInputPort().

hasNoOperationEncoding()

bool SlotField::hasNoOperationEncoding

(

)

const

Tells whether the slot field has a NOP encoding.

Returns

True if the slot field has a NOP encoding, otherwise false.

Definition at line 267 of file SlotField.cc.

                                        {
    return nopEncoding_ != NULL;
}

References nopEncoding_.

Referenced by BEMTester::canAddComponentEncoding(), clearNoOperationEncoding(), CodeCompressorPlugin::encodeNOP(), noOperationEncoding(), printSlotFieldEncodings(), saveState(), setNoOperationEncoding(), unsetNoOperationEncoding(), and width().

hasSocketEncoding()

bool SlotField::hasSocketEncoding

(

const std::string &

socket

)

const

Tells whether the slot field has an encoding for the socket with the given name.

Parameters

socket

Name of the socket.

Returns

True if the slot field has an encoding for the given socket, otherwise false.

Definition at line 188 of file SlotField.cc.

                                                          {
    for (SocketEncodingTable::const_iterator iter = encodings_.begin();
     iter != encodings_.end(); iter++) {
    SocketEncoding* encoding = *iter;
    if (encoding->socketName() == socket) {
        return true;
    }
    }
    return false;
}

References encodings_, and SocketEncoding::socketName().

Referenced by addSocketEncoding(), BEMValidator::checkDestinationField(), BEMValidator::checkSourceField(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeIUTerminal(), and CodeCompressorPlugin::encodeRFTerminal().

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loadState()

void SlotField::loadState ( const ObjectState *  state )

virtual

Loads the state of the object from the given ObjectState tree.

Parameters

state

The ObjectState tree.

Exceptions

ObjectStateLoadingException

If an error occurs while loading the state.

Reimplemented from InstructionField.

Reimplemented in SourceField.

Definition at line 358 of file SlotField.cc.

                                             {
    clearSocketEncodings();
    clearNoOperationEncoding();
    InstructionField::loadState(state);
 
    const string procName = "SlotField::loadState";
 
    try {
    componentIDPos_ = static_cast<BinaryEncoding::Position>(
        state->intAttribute(OSKEY_COMPONENT_ID_POSITION));
    for (int i = 0; i < state->childCount(); i++) {
        ObjectState* child = state->child(i);
        if (child->name() == SocketEncoding::OSNAME_SOCKET_ENCODING) {
        new SocketEncoding(child, *this);
            } else if (child->name() == NOPEncoding::OSNAME_NOP_ENCODING) {
                new NOPEncoding(child, *this);
        }
    }
    } catch (const Exception& exception) {
    throw ObjectStateLoadingException(
        __FILE__, __LINE__, procName, exception.errorMessage());
    }
}

References ObjectState::child(), ObjectState::childCount(), clearNoOperationEncoding(), clearSocketEncodings(), componentIDPos_, Exception::errorMessage(), ObjectState::intAttribute(), InstructionField::loadState(), ObjectState::name(), OSKEY_COMPONENT_ID_POSITION, NOPEncoding::OSNAME_NOP_ENCODING, and SocketEncoding::OSNAME_SOCKET_ENCODING.

Referenced by SourceField::loadState(), and SlotField().

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noOperationEncoding()

NOPEncoding & SlotField::noOperationEncoding

(

)

const

Returns the NOP encoding.

Returns NullNOPEncoding instance if the slot field does not have a NOP encoding.

Returns

The NOP encoding.

Definition at line 281 of file SlotField.cc.

                                     {
    if (hasNoOperationEncoding()) {
        return *nopEncoding_;
    } else {
        return NullNOPEncoding::instance();
    }
}

References hasNoOperationEncoding(), NullNOPEncoding::instance(), and nopEncoding_.

Referenced by BEMTester::canAddComponentEncoding(), CodeCompressorPlugin::encodeNOP(), printSlotFieldEncodings(), saveState(), unsetNoOperationEncoding(), and width().

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parent()

MoveSlot * SlotField::parent

(

)

const

Returns the parent move slot.

Definition at line 98 of file SlotField.cc.

                        {
    InstructionField* parent = InstructionField::parent();
    if (parent == NULL) {
    return NULL;
    } else {
    MoveSlot* slot = dynamic_cast<MoveSlot*>(parent);
    assert(slot != NULL);
    return slot;
    }
}

References assert, InstructionField::parent(), and parent().

Referenced by CodeCompressorPlugin::addBitsForDestinationField(), CodeCompressorPlugin::addBitsForSourceField(), BEMGenerator::addEncodings(), BEMGenerator::addEncodings(), BEMValidator::checkSocketCodeTable(), DestinationField::DestinationField(), DestinationField::DestinationField(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeImmediateTerminal(), CodeCompressorPlugin::encodeIUTerminal(), CodeCompressorPlugin::encodeRFTerminal(), parent(), DefaultDecoderGenerator::portCodeCondition(), DefaultDecoderGenerator::rfOpcodeFromSrcOrDstField(), MoveSlot::setDestinationField(), SourceField::setImmediateEncoding(), MoveSlot::setSourceField(), SocketEncoding::SocketEncoding(), DefaultDecoderGenerator::socketEncodingCondition(), SourceField::SourceField(), SourceField::SourceField(), SourceField::unsetImmediateEncoding(), unsetNoOperationEncoding(), DefaultDecoderGenerator::writeControlRulesOfFUInputPort(), DestinationField::~DestinationField(), and SourceField::~SourceField().

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removeSocketEncoding()

void SlotField::removeSocketEncoding

(

SocketEncoding &

encoding

)

Removes the given socket encoding.

This method is to be called from SocketEncoding destructor.

Parameters

encoding

The socket encoding to be removed.

Definition at line 143 of file SlotField.cc.

                                                        {
    // verify that this is called from SocketEncoding destructor
    assert(encoding.parent() == NULL);
    assert(ContainerTools::removeValueIfExists(encodings_, &encoding));
}

References assert, encodings_, SocketEncoding::parent(), and ContainerTools::removeValueIfExists().

Referenced by SocketEncoding::detachFromParent().

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saveState()

ObjectState * SlotField::saveState ( ) const

virtual

Saves the state of the object to an ObjectState tree.

Returns

The newly created ObjectState tree.

Reimplemented from InstructionField.

Reimplemented in DestinationField, and SourceField.

Definition at line 388 of file SlotField.cc.

                           {
 
    ObjectState* state = InstructionField::saveState();
    state->setName(OSNAME_SLOT_FIELD);
    state->setAttribute(OSKEY_COMPONENT_ID_POSITION, componentIDPosition());
 
    // add socket encodings
    for (int i = 0; i < socketEncodingCount(); i++) {
    SocketEncoding& enc = socketEncoding(i);
    state->addChild(enc.saveState());
    }
 
    // add NOP encoding
    if (hasNoOperationEncoding()) {
        state->addChild(noOperationEncoding().saveState());
    }
 
    return state;
}

References ObjectState::addChild(), componentIDPosition(), hasNoOperationEncoding(), noOperationEncoding(), OSKEY_COMPONENT_ID_POSITION, OSNAME_SLOT_FIELD, InstructionField::saveState(), saveState(), SocketEncoding::saveState(), ObjectState::setAttribute(), ObjectState::setName(), socketEncoding(), and socketEncodingCount().

Referenced by DestinationField::saveState(), saveState(), and SourceField::saveState().

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setNoOperationEncoding()

void SlotField::setNoOperationEncoding

(

NOPEncoding &

encoding

)

Sets the given encoding for no operation.

This method is to be called from the constructor of NOPEncoding.

Parameters

encoding

The encoding to be set.

Exceptions

ObjectAlreadyExists

If the slot field has a NOP encoding already or if the given encoding is ambiguous with some other encoding.

Definition at line 234 of file SlotField.cc.

                                                       {
    assert(encoding.parent() == NULL);
 
    if (hasNoOperationEncoding() ||
        !BEMTester::canAddComponentEncoding(
            *this, encoding.encoding(), encoding.extraBits())) {
        const string procName = "SlotField::setNoOperationEncoding";
        throw ObjectAlreadyExists(__FILE__, __LINE__, procName);
    }
 
    nopEncoding_ = &encoding;
}

References assert, BEMTester::canAddComponentEncoding(), Encoding::encoding(), Encoding::extraBits(), hasNoOperationEncoding(), nopEncoding_, and NOPEncoding::parent().

Referenced by NOPEncoding::NOPEncoding(), and NOPEncoding::NOPEncoding().

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socketEncoding() [1/2]

SocketEncoding & SlotField::socketEncoding

(

const std::string &

socket

)

const

Returns the socket encoding of the socket with the given name.

Returns a NullSocketEncoding instance if this field does not encode the socket.

Parameters

socket

Name of the socket.

Returns

The socket encoding of the given socket.

Definition at line 210 of file SlotField.cc.

                                                       {
    for (SocketEncodingTable::const_iterator iter = encodings_.begin();
     iter != encodings_.end(); iter++) {
    SocketEncoding* encoding = *iter;
    if (encoding->socketName() == socket) {
        return **iter;
    }
    }
 
    return NullSocketEncoding::instance();
}

References encodings_, NullSocketEncoding::instance(), and SocketEncoding::socketName().

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socketEncoding() [2/2]

SocketEncoding & SlotField::socketEncoding

(

int

index

)

const

Returns the socket encoding stored at the given position.

Parameters

index

The position.

Returns

The socket encoding.

Exceptions

OutOfRange

If the given index is negative or not smaller than the number of sockets encoded in the field.

Definition at line 170 of file SlotField.cc.

                                         {
    if (index < 0 || index >= socketEncodingCount()) {
    const string procName = "SlotField::socketEncoding";
    throw OutOfRange(__FILE__, __LINE__, procName);
    }
 
    return *encodings_[index];
}

References encodings_, and socketEncodingCount().

Referenced by BEMTester::canAddComponentEncoding(), BEMValidator::checkDestinationField(), BEMValidator::checkSourceField(), BEMTester::conflictsWithDestinationEncodings(), BEMTester::conflictsWithSourceEncodings(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeIUTerminal(), CodeCompressorPlugin::encodeRFTerminal(), printSlotFieldEncodings(), SocketCodeTable::removeReferences(), saveState(), DefaultDecoderGenerator::socketEncodingCondition(), width(), DefaultDecoderGenerator::writeControlRulesOfFUInputPort(), DefaultDecoderGenerator::writeControlRulesOfFUOutputPort(), DefaultDecoderGenerator::writeControlRulesOfRFReadPort(), and DefaultDecoderGenerator::writeControlRulesOfRFWritePort().

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socketEncodingCount()

int SlotField::socketEncodingCount

(

)

const

Returns the number of sockets that are encoded in this field.

Returns

The number of sockets.

Definition at line 156 of file SlotField.cc.

                                     {
    return encodings_.size();
}

References encodings_.

Referenced by BEMTester::canAddComponentEncoding(), BEMTester::conflictsWithDestinationEncodings(), BEMTester::conflictsWithSourceEncodings(), printSlotFieldEncodings(), SocketCodeTable::removeReferences(), saveState(), socketEncoding(), and width().

unsetNoOperationEncoding()

void SlotField::unsetNoOperationEncoding

(

)

Unsets the NOP encoding.

This method is to be called from the destructor of NOPEncoding.

Definition at line 253 of file SlotField.cc.

                                    {
    assert(hasNoOperationEncoding());
    assert(noOperationEncoding().parent() == NULL);
    nopEncoding_ = NULL;
}

References assert, hasNoOperationEncoding(), noOperationEncoding(), nopEncoding_, and parent().

Referenced by NOPEncoding::~NOPEncoding().

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width()

int SlotField::width ( ) const

virtual

Returns the bit width required by the socket encodings.

Returns

The bit width.

Implements InstructionField.

Reimplemented in SourceField.

Definition at line 307 of file SlotField.cc.

                       {
 
    int width(0);
    int encodings = socketEncodingCount();
    for (int i = 0; i < encodings; i++) {
    SocketEncoding& encoding = socketEncoding(i);
    int encodingWidth = encoding.width();
    if (encodingWidth > width) {
        width = encodingWidth;
    }
    }
 
    if (hasNoOperationEncoding() && noOperationEncoding().width() > width) {
        width = noOperationEncoding().width();
    }
 
    return width + extraBits();
}

References InstructionField::extraBits(), hasNoOperationEncoding(), noOperationEncoding(), socketEncoding(), socketEncodingCount(), Encoding::width(), width(), and SocketEncoding::width().

Referenced by NOPEncoding::bitPosition(), BEMTester::canAddComponentPriorityEncoding(), CodeCompressorPlugin::encodeMove(), CodeCompressorPlugin::encodeNOP(), CodeCompressorPlugin::encodeSlotField(), ProGe::RV32MicroCodeGenerator::findBusWidths(), printMoveSlotLayout(), printSlotFieldEncodings(), DefaultDecoderGenerator::rfOpcodeFromSrcOrDstField(), SocketEncoding::socketCodePosition(), SocketEncoding::socketIDPosition(), MoveSlot::width(), width(), SourceField::width(), DefaultDecoderGenerator::writeInstructionDismembering(), and DefaultDecoderGenerator::writeMoveFieldSignals().

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Member Data Documentation

componentIDPos_

BinaryEncoding::Position SlotField::componentIDPos_

private

Position of the socket and bridge IDs within the field.

Definition at line 109 of file SlotField.hh.

Referenced by componentIDPosition(), and loadState().

encodings_

SocketEncodingTable SlotField::encodings_

private

The container for socket encodings.

Definition at line 107 of file SlotField.hh.

Referenced by addSocketEncoding(), clearSocketEncodings(), hasSocketEncoding(), removeSocketEncoding(), socketEncoding(), socketEncoding(), and socketEncodingCount().

nopEncoding_

NOPEncoding* SlotField::nopEncoding_

private

The NOP encoding.

Definition at line 105 of file SlotField.hh.

Referenced by clearNoOperationEncoding(), hasNoOperationEncoding(), noOperationEncoding(), setNoOperationEncoding(), and unsetNoOperationEncoding().

OSKEY_COMPONENT_ID_POSITION

const std::string SlotField::OSKEY_COMPONENT_ID_POSITION = "comp_id_pos"

static

ObjectState attribute key for component ID position.

Definition at line 91 of file SlotField.hh.

Referenced by loadState(), saveState(), BEMSerializer::slotFieldToFile(), and BEMSerializer::slotFieldToOM().

OSNAME_SLOT_FIELD

const std::string SlotField::OSNAME_SLOT_FIELD = "slot_field"

static

ObjectState name for slot field.

Definition at line 89 of file SlotField.hh.

Referenced by saveState(), and BEMSerializer::slotFieldToOM().

---

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

• SlotField.hh
• SlotField.cc