dioscuri.module.cpu32
Class FpuState64

java.lang.Object
  dioscuri.module.cpu32.FpuState
      dioscuri.module.cpu32.FpuState64

All Implemented Interfaces:

Hibernatable

public class FpuState64
extends FpuState

Author:

Bram Lohman, Bart Kiers

Field Summary

static int	FPU_SPECIAL_TAG_DENORMAL
static int	FPU_SPECIAL_TAG_INFINITY
static int	FPU_SPECIAL_TAG_NAN
static int	FPU_SPECIAL_TAG_NONE
static int	FPU_SPECIAL_TAG_SNAN
static int	FPU_SPECIAL_TAG_UNSUPPORTED
static double	UNDERFLOW_THRESHOLD

Fields inherited from class dioscuri.module.cpu32.FpuState

conditionCode, FPU_PRECISION_CONTROL_DOUBLE, FPU_PRECISION_CONTROL_EXTENDED, FPU_PRECISION_CONTROL_SINGLE, FPU_ROUNDING_CONTROL_DOWN, FPU_ROUNDING_CONTROL_EVEN, FPU_ROUNDING_CONTROL_TRUNCATE, FPU_ROUNDING_CONTROL_UP, FPU_TAG_EMPTY, FPU_TAG_SPECIAL, FPU_TAG_VALID, FPU_TAG_ZERO, infinityControl, lastData, lastIP, lastOpcode, STACK_DEPTH, top

Constructor Summary

FpuState64(Processor owner)

Method Summary

void	checkExceptions()
void	clearExceptions()
static byte[]	doubleToExtended(double x, boolean isSignalNaN)
void	dumpState(java.io.DataOutput output)
static double	extendedToDouble(byte[] b)
boolean	getBusy()
int	getControl()
boolean	getDenormalizedOperand()
boolean	getDenormalizedOperandMask()
boolean	getErrorSummaryStatus()
boolean	getInvalidOperation()
boolean	getInvalidOperationMask()
boolean	getOverflow()
boolean	getOverflowMask()
boolean	getPrecision()
int	getPrecisionControl()
boolean	getPrecisionMask()
int	getRoundingControl()
int	getSpecialTag(int index)
boolean	getStackFault()
int	getStatus()
int	getTag(int index)
int	getTagWord()
boolean	getUnderflow()
boolean	getUnderflowMask()
boolean	getZeroDivide()
boolean	getZeroDivideMask()
void	init()
static boolean	isDenormal(double x)
static boolean	isSNaN(long n)
void	loadState(java.io.DataInput input)
double	pop()
void	push(double x)
void	setAllMasks(boolean value)
void	setControl(int w)
void	setDenormalizedOperand()
void	setDenormalizedOperandMask(boolean value)
void	setInvalidOperation()
void	setInvalidOperationMask(boolean value)
void	setOverflow()
void	setOverflowMask(boolean value)
void	setPrecision()
void	setPrecisionControl(int value)
void	setPrecisionMask(boolean value)
void	setRoundingControl(int value)
void	setST(int index, double value)
void	setStackFault()
void	setStatus(int w)
void	setTagWord(int w)
void	setUnderflow()
void	setUnderflowMask(boolean value)
void	setZeroDivide()
void	setZeroDivideMask(boolean value)
static int	specialTagCode(byte[] b)
static int	specialTagCode(double x)
double	ST(int index)
int	tagCode(double x)

Methods inherited from class dioscuri.module.cpu32.FpuState

copyStateInto, equals, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

FPU_SPECIAL_TAG_NONE

public static final int FPU_SPECIAL_TAG_NONE

See Also:

Constant Field Values

FPU_SPECIAL_TAG_NAN

public static final int FPU_SPECIAL_TAG_NAN

See Also:

Constant Field Values

FPU_SPECIAL_TAG_UNSUPPORTED

public static final int FPU_SPECIAL_TAG_UNSUPPORTED

See Also:

Constant Field Values

FPU_SPECIAL_TAG_INFINITY

public static final int FPU_SPECIAL_TAG_INFINITY

See Also:

Constant Field Values

FPU_SPECIAL_TAG_DENORMAL

public static final int FPU_SPECIAL_TAG_DENORMAL

See Also:

Constant Field Values

FPU_SPECIAL_TAG_SNAN

public static final int FPU_SPECIAL_TAG_SNAN

See Also:

Constant Field Values

UNDERFLOW_THRESHOLD

public static final double UNDERFLOW_THRESHOLD

Constructor Detail

FpuState64

public FpuState64(Processor owner)

Parameters:

owner -

Method Detail

dumpState

public void dumpState(java.io.DataOutput output)
               throws java.io.IOException

Specified by:

dumpState in class FpuState

Parameters:

output -

Throws:

java.io.IOException

loadState

public void loadState(java.io.DataInput input)
               throws java.io.IOException

Specified by:

loadState in class FpuState

Parameters:

input -

Throws:

java.io.IOException

getInvalidOperation

public boolean getInvalidOperation()

Specified by:

getInvalidOperation in class FpuState

Returns:

-

getDenormalizedOperand

public boolean getDenormalizedOperand()

Specified by:

getDenormalizedOperand in class FpuState

Returns:

-

getZeroDivide

public boolean getZeroDivide()

Specified by:

getZeroDivide in class FpuState

Returns:

-

getOverflow

public boolean getOverflow()

Specified by:

getOverflow in class FpuState

Returns:

-

getUnderflow

public boolean getUnderflow()

Specified by:

getUnderflow in class FpuState

Returns:

-

getPrecision

public boolean getPrecision()

Specified by:

getPrecision in class FpuState

Returns:

-

getStackFault

public boolean getStackFault()

Specified by:

getStackFault in class FpuState

Returns:

-

setInvalidOperation

public void setInvalidOperation()

Specified by:

setInvalidOperation in class FpuState

setDenormalizedOperand

public void setDenormalizedOperand()

Specified by:

setDenormalizedOperand in class FpuState

setZeroDivide

public void setZeroDivide()

Specified by:

setZeroDivide in class FpuState

setOverflow

public void setOverflow()

Specified by:

setOverflow in class FpuState

setUnderflow

public void setUnderflow()

Specified by:

setUnderflow in class FpuState

setPrecision

public void setPrecision()

Specified by:

setPrecision in class FpuState

setStackFault

public void setStackFault()

Specified by:

setStackFault in class FpuState

getBusy

public boolean getBusy()

Specified by:

getBusy in class FpuState

Returns:

-

getErrorSummaryStatus

public boolean getErrorSummaryStatus()

Specified by:

getErrorSummaryStatus in class FpuState

Returns:

-

checkExceptions

public void checkExceptions()
                     throws ProcessorException

Specified by:

checkExceptions in class FpuState

Throws:

ProcessorException

clearExceptions

public void clearExceptions()

Specified by:

clearExceptions in class FpuState

getInvalidOperationMask

public boolean getInvalidOperationMask()

Specified by:

getInvalidOperationMask in class FpuState

Returns:

-

getDenormalizedOperandMask

public boolean getDenormalizedOperandMask()

Specified by:

getDenormalizedOperandMask in class FpuState

Returns:

-

getZeroDivideMask

public boolean getZeroDivideMask()

Specified by:

getZeroDivideMask in class FpuState

Returns:

-

getOverflowMask

public boolean getOverflowMask()

Specified by:

getOverflowMask in class FpuState

Returns:

-

getUnderflowMask

public boolean getUnderflowMask()

Specified by:

getUnderflowMask in class FpuState

Returns:

-

getPrecisionMask

public boolean getPrecisionMask()

Specified by:

getPrecisionMask in class FpuState

Returns:

-

getPrecisionControl

public int getPrecisionControl()

Specified by:

getPrecisionControl in class FpuState

Returns:

-

getRoundingControl

public int getRoundingControl()

Specified by:

getRoundingControl in class FpuState

Returns:

-

setInvalidOperationMask

public void setInvalidOperationMask(boolean value)

Specified by:

setInvalidOperationMask in class FpuState

Parameters:

value -

setDenormalizedOperandMask

public void setDenormalizedOperandMask(boolean value)

Specified by:

setDenormalizedOperandMask in class FpuState

Parameters:

value -

setZeroDivideMask

public void setZeroDivideMask(boolean value)

Specified by:

setZeroDivideMask in class FpuState

Parameters:

value -

setOverflowMask

public void setOverflowMask(boolean value)

Specified by:

setOverflowMask in class FpuState

Parameters:

value -

setUnderflowMask

public void setUnderflowMask(boolean value)

Specified by:

setUnderflowMask in class FpuState

Parameters:

value -

setPrecisionMask

public void setPrecisionMask(boolean value)

Specified by:

setPrecisionMask in class FpuState

Parameters:

value -

setAllMasks

public void setAllMasks(boolean value)

Specified by:

setAllMasks in class FpuState

Parameters:

value -

setPrecisionControl

public void setPrecisionControl(int value)

Specified by:

setPrecisionControl in class FpuState

Parameters:

value -

setRoundingControl

public void setRoundingControl(int value)

Specified by:

setRoundingControl in class FpuState

Parameters:

value -

init

public void init()

Specified by:

init in class FpuState

tagCode

public int tagCode(double x)

Parameters:

x -

Returns:

-

isDenormal

public static boolean isDenormal(double x)

Parameters:

x -

Returns:

-

isSNaN

public static boolean isSNaN(long n)

Parameters:

n -

Returns:

-

specialTagCode

public static int specialTagCode(double x)

Parameters:

x -

Returns:

-

push

public void push(double x)
          throws ProcessorException

Specified by:

push in class FpuState

Parameters:

x -

Throws:

ProcessorException

pop

public double pop()
           throws ProcessorException

Specified by:

pop in class FpuState

Returns:

-

Throws:

ProcessorException

ST

public double ST(int index)
          throws ProcessorException

Specified by:

ST in class FpuState

Parameters:

index -

Returns:

-

Throws:

ProcessorException

getTag

public int getTag(int index)

Specified by:

getTag in class FpuState

Parameters:

index -

Returns:

-

getSpecialTag

public int getSpecialTag(int index)

Parameters:

index -

Returns:

-

setST

public void setST(int index,
                  double value)

Specified by:

setST in class FpuState

Parameters:

index -

value -

getStatus

public int getStatus()

Specified by:

getStatus in class FpuState

Returns:

-

setStatus

public void setStatus(int w)

Specified by:

setStatus in class FpuState

Parameters:

w -

getControl

public int getControl()

Specified by:

getControl in class FpuState

Returns:

-

setControl

public void setControl(int w)

Specified by:

setControl in class FpuState

Parameters:

w -

getTagWord

public int getTagWord()

Specified by:

getTagWord in class FpuState

Returns:

-

setTagWord

public void setTagWord(int w)

Specified by:

setTagWord in class FpuState

Parameters:

w -

doubleToExtended

public static byte[] doubleToExtended(double x,
                                      boolean isSignalNaN)

Parameters:

x -

isSignalNaN -

Returns:

-

specialTagCode

public static int specialTagCode(byte[] b)

Parameters:

b -

Returns:

-

extendedToDouble

public static double extendedToDouble(byte[] b)

Parameters:

b -

Returns:

-