dioscuri.module.cpu32
Class LinearAddressSpace

java.lang.Object
  dioscuri.module.cpu32.Memory
      dioscuri.module.cpu32.AbstractMemory
          dioscuri.module.cpu32.AddressSpace
              dioscuri.module.cpu32.LinearAddressSpace

All Implemented Interfaces:

ByteArray, HardwareComponent, Hibernatable

public final class LinearAddressSpace
extends AddressSpace
implements HardwareComponent

Author:

Bram Lohman, Bart Kiers

Nested Class Summary

static class

LinearAddressSpace.PageFaultWrapper

Field Summary

Fields inherited from class dioscuri.module.cpu32.AddressSpace

BLOCK_MASK, BLOCK_SIZE, INDEX_MASK, INDEX_SHIFT, INDEX_SIZE

Constructor Summary

LinearAddressSpace()

Method Summary

void	acceptComponent(HardwareComponent component)
void	clear()
CodeBlock	decodeCodeBlockAt(Processor cpu, int offset)
void	dumpState(java.io.DataOutput output)
int	execute(Processor cpu, int offset)
void	flush()
byte	getByte(int offset)
int	getDoubleWord(int offset)
int	getLastWalkedAddress()
Memory	getReadMemoryBlockAt(int offset)
short	getWord(int offset)
Memory	getWriteMemoryBlockAt(int offset)
boolean	initialised()
void	invalidateTLBEntry(int offset)
boolean	isPagingEnabled()
boolean	isSupervisor()
void	loadState(java.io.DataInput input)
boolean	pagingDisabled()
boolean	reset()
void	setByte(int offset, byte data)
void	setDoubleWord(int offset, int data)
void	setGlobalPagesEnabled(boolean value)
void	setPageCacheEnabled(boolean value)
void	setPageDirectoryBaseAddress(int address)
void	setPageSizeExtensionsEnabled(boolean value)
void	setPageWriteThroughEnabled(boolean value)
void	setPagingEnabled(boolean value)
void	setSupervisor(boolean value)
void	setWord(int offset, short data)
void	setWriteProtectUserPages(boolean value)
void	timerCallback()
java.lang.String	toString()
void	updateComponent(HardwareComponent component)
boolean	updated()
Memory	validateTLBEntryRead(int offset)
Memory	validateTLBEntryWrite(int offset)

Methods inherited from class dioscuri.module.cpu32.AddressSpace

copyContentsFrom, copyContentsInto, getBlockEnd, getBlockStart, getLowerDoubleQuadWord, getQuadWord, getSize, getUpperDoubleQuadWord, setLowerDoubleQuadWord, setQuadWord, setUpperDoubleQuadWord

Methods inherited from class dioscuri.module.cpu32.AbstractMemory

clear, clearArray, clearArray, getDoubleWord, getDoubleWordInBytes, getQuadWordInBytes, getWord, getWordInBytes, setDoubleWordInBytes, setQuadWordInBytes, setWordInBytes

Methods inherited from class dioscuri.module.cpu32.Memory

isAllocated

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LinearAddressSpace

public LinearAddressSpace()

Method Detail

dumpState

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

Specified by:

dumpState in interface HardwareComponent

Parameters:

output -

Throws:

java.io.IOException

loadState

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

Specified by:

loadState in interface HardwareComponent

Parameters:

input -

Throws:

java.io.IOException

getLastWalkedAddress

public int getLastWalkedAddress()

Returns:

-

isSupervisor

public boolean isSupervisor()

Returns:

-

setSupervisor

public void setSupervisor(boolean value)

Parameters:

value -

isPagingEnabled

public boolean isPagingEnabled()

Returns:

-

setPagingEnabled

public void setPagingEnabled(boolean value)

Parameters:

value -

setPageCacheEnabled

public void setPageCacheEnabled(boolean value)

Parameters:

value -

setPageSizeExtensionsEnabled

public void setPageSizeExtensionsEnabled(boolean value)

Parameters:

value -

setPageWriteThroughEnabled

public void setPageWriteThroughEnabled(boolean value)

Parameters:

value -

setGlobalPagesEnabled

public void setGlobalPagesEnabled(boolean value)

Parameters:

value -

setWriteProtectUserPages

public void setWriteProtectUserPages(boolean value)

Parameters:

value -

pagingDisabled

public boolean pagingDisabled()

Returns:

-

flush

public void flush()

setPageDirectoryBaseAddress

public void setPageDirectoryBaseAddress(int address)

Parameters:

address -

invalidateTLBEntry

public void invalidateTLBEntry(int offset)

Parameters:

offset -

validateTLBEntryRead

public Memory validateTLBEntryRead(int offset)

Parameters:

offset -

Returns:

-

validateTLBEntryWrite

public Memory validateTLBEntryWrite(int offset)

Parameters:

offset -

Returns:

-

getReadMemoryBlockAt

public Memory getReadMemoryBlockAt(int offset)

Specified by:

getReadMemoryBlockAt in class AddressSpace

Parameters:

offset -

Returns:

-

getWriteMemoryBlockAt

public Memory getWriteMemoryBlockAt(int offset)

Specified by:

getWriteMemoryBlockAt in class AddressSpace

Parameters:

offset -

Returns:

-

getByte

public byte getByte(int offset)

Specified by:

getByte in interface ByteArray

Overrides:

getByte in class AddressSpace

Parameters:

offset -

Returns:

-

getWord

public short getWord(int offset)

Overrides:

getWord in class AddressSpace

Parameters:

offset -

Returns:

-

getDoubleWord

public int getDoubleWord(int offset)

Overrides:

getDoubleWord in class AddressSpace

Parameters:

offset -

Returns:

-

setByte

public void setByte(int offset,
                    byte data)

Specified by:

setByte in interface ByteArray

Overrides:

setByte in class AddressSpace

Parameters:

offset -

data -

setWord

public void setWord(int offset,
                    short data)

Overrides:

setWord in class AddressSpace

Parameters:

offset -

data -

setDoubleWord

public void setDoubleWord(int offset,
                          int data)

Overrides:

setDoubleWord in class AddressSpace

Parameters:

offset -

data -

clear

public void clear()

Specified by:

clear in interface ByteArray

Specified by:

clear in class AddressSpace

execute

public int execute(Processor cpu,
                   int offset)

Specified by:

execute in class Memory

Parameters:

cpu -

offset -

Returns:

-

decodeCodeBlockAt

public CodeBlock decodeCodeBlockAt(Processor cpu,
                                   int offset)

Specified by:

decodeCodeBlockAt in class Memory

Parameters:

cpu -

offset -

Returns:

-

reset

public boolean reset()

Specified by:

reset in interface HardwareComponent

Returns:

-

updated

public boolean updated()

Specified by:

updated in interface HardwareComponent

Specified by:

updated in class AddressSpace

Returns:

-

updateComponent

public void updateComponent(HardwareComponent component)

Specified by:

updateComponent in interface HardwareComponent

Parameters:

component -

initialised

public boolean initialised()

Specified by:

initialised in interface HardwareComponent

Returns:

-

acceptComponent

public void acceptComponent(HardwareComponent component)

Specified by:

acceptComponent in interface HardwareComponent

Parameters:

component -

timerCallback

public void timerCallback()

Specified by:

timerCallback in interface HardwareComponent

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object