NOPEncoding Class Reference

#include <NOPEncoding.hh>

Inheritance diagram for NOPEncoding:

Collaboration diagram for NOPEncoding:

Public Member Functions
	NOPEncoding (unsigned int encoding, unsigned int extraBits, SlotField &parent)
	NOPEncoding (const ObjectState *state, SlotField &parent)
virtual	~NOPEncoding ()
SlotField *	parent () const
virtual int	bitPosition () const
virtual ObjectState *	saveState () const
Public Member Functions inherited from Encoding
virtual	~Encoding ()
InstructionField *	parent () const
unsigned int	encoding () const
unsigned int	extraBits () const
virtual int	width () const

Static Public Attributes
static const std::string	OSNAME_NOP_ENCODING = "nop_encoding"
	ObjectState name for NOP encoding. More...
Static Public Attributes inherited from Encoding
static const std::string	OSNAME_ENCODING = "encoding"
	ObjectState name for Encoding class. More...
static const std::string	OSKEY_ENCODING = "encoding"
	ObjectState attribute key for the encoding. More...
static const std::string	OSKEY_EXTRA_BITS = "extra_bits"
	ObjectState attribute key for the number of extra bits. More...

Additional Inherited Members
Protected Member Functions inherited from Encoding
	Encoding (unsigned int encoding, unsigned int extraBits, InstructionField *parent)
	Encoding (const ObjectState *state, InstructionField *parent)
void	setParent (InstructionField *parent)
void	setEncoding (unsigned int encoding, unsigned int extraBits)

Detailed Description

Represents the encoding for NOP (no operation) in the source field.

Definition at line 44 of file NOPEncoding.hh.

Constructor & Destructor Documentation

NOPEncoding() [1/2]

NOPEncoding::NOPEncoding	(	unsigned int	encoding,
		unsigned int	extraBits,
		SlotField &	parent
	)

The constructor.

Registers the encoding automatically to the parent src/dst field.

Parameters

encoding	The encoding for inline immediates.
extraBits	The number of extra bits in the encoding.
parent	The parent src/dst field.

Exceptions

ObjectAlreadyExists

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

Definition at line 55 of file NOPEncoding.cc.

    : Encoding(encoding, extraBits, NULL) {
    parent.setNoOperationEncoding(*this);
    setParent(&parent);
}

References parent(), SlotField::setNoOperationEncoding(), and Encoding::setParent().

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NOPEncoding() [2/2]

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

The constructor.

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

Parameters

state	The ObjectState instance.
parent	The parent field.

Exceptions

ObjectAlreadyExists	If the given parent field has a NOP encoding already or if the encoding is ambiguous with some other encoding in the parent field.
ObjectStateLoadingException	If the given ObjectState instance is erroneous.

Definition at line 76 of file NOPEncoding.cc.

    : Encoding(state, NULL) {
    const string procName = "NOPEncoding::NOPEncoding";
 
    if (state->name() != OSNAME_NOP_ENCODING) {
        throw ObjectStateLoadingException(__FILE__, __LINE__, procName);
    }
 
    parent.setNoOperationEncoding(*this);
    setParent(&parent);
}

References ObjectState::name(), OSNAME_NOP_ENCODING, parent(), SlotField::setNoOperationEncoding(), and Encoding::setParent().

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~NOPEncoding()

NOPEncoding::~NOPEncoding ( )

virtual

The destructor.

Definition at line 91 of file NOPEncoding.cc.

                          {
    SlotField* oldParent = parent();
    assert(oldParent != NULL);
    setParent(NULL);
    oldParent->unsetNoOperationEncoding();
}

References assert, parent(), Encoding::setParent(), and SlotField::unsetNoOperationEncoding().

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Member Function Documentation

bitPosition()

int NOPEncoding::bitPosition ( ) const

virtual

Returns the position of the encoding within the source field.

Returns

The position of the encoding.

Implements Encoding.

Definition at line 123 of file NOPEncoding.cc.

                               {
    if (parent()->componentIDPosition() == BinaryEncoding::LEFT) {
        return parent()->width() - parent()->extraBits() - width();
    } else {
        return 0;
    }
}

References InstructionField::extraBits(), BinaryEncoding::LEFT, parent(), Encoding::width(), and SlotField::width().

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parent()

SlotField * NOPEncoding::parent

(

)

const

Returns the parent source field.

Returns

The parent.

Definition at line 105 of file NOPEncoding.cc.

                          {
    InstructionField* parent = Encoding::parent();
    if (parent != NULL) {
        SlotField* sField = dynamic_cast<SlotField*>(parent);
        assert(sField != NULL);
        return sField;
    } else {
        return NULL;
    }
}

References assert, and Encoding::parent().

Referenced by bitPosition(), NOPEncoding(), SlotField::setNoOperationEncoding(), and ~NOPEncoding().

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saveState()

ObjectState * NOPEncoding::saveState ( ) const

virtual

Saves the state of the object to an ObjectState instance.

Returns

The newly created ObjectState instance.

Reimplemented from Encoding.

Definition at line 138 of file NOPEncoding.cc.

                             {
    ObjectState* state = Encoding::saveState();
    state->setName(OSNAME_NOP_ENCODING);
    return state;
}

References OSNAME_NOP_ENCODING, Encoding::saveState(), and ObjectState::setName().

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Member Data Documentation

OSNAME_NOP_ENCODING

const std::string NOPEncoding::OSNAME_NOP_ENCODING = "nop_encoding"

static

ObjectState name for NOP encoding.

Definition at line 57 of file NOPEncoding.hh.

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

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

• NOPEncoding.hh
• NOPEncoding.cc