hades.models.mips.mipsmemory
Class FastAccessMemory

java.lang.Object
  hades.models.mips.mipsmemory.AccessMemory
      hades.models.mips.mipsmemory.FastAccessMemory

All Implemented Interfaces:

Memory, Resetable

public class FastAccessMemory

extends AccessMemory

Do the same like AccessMemory - without the layers below for fast operation

Field Summary

protected int	dataResult
protected EntryHandler	entryHandler
protected boolean	entryHandlerInstalled
protected int	instrResult
static int	INTERNAL_MEM_SIZE
protected int[]	internalMem

Fields inherited from class hades.models.mips.mipsmemory.AccessMemory

bigEndian, byteReadMask, byteWriteMask, data, dataCache, dataMask, dataShift, dcache, DCACHE_SIZE, dcacheSelection, debug, dispatcher, halfwordReadMask, halfwordWriteMask, icache, ICACHE_SIZE, icacheSelection, instr, instrCache, lastdcache, lasticache, mem, MEMORY_SIZE, mmu, partHandler, partWordByte, partWordFirst, partWordTriple, partWordWrite, physicalDataAdr, physicalInstrAdr, realDataCache, realInstrCache, stack, STACK_SIZE, tinyMemory, translateable, translation, triplebyteReadMask, triplebyteWriteMask, virtualDataAdr, virtualInstrAdr

Constructor Summary

FastAccessMemory(PartHandler newPartHandler)

Method Summary

boolean	beginCycle() Cycle
void	endCycle()
int	fetchInstr()
int	getMemorySize() Capacity of the memory in words
int	getReadResult()
int	getWordWidth() Witdh of one word in bits
void	installEntryHandler(EntryHandler newEntryHandler) setEntry() calles this EntryHandler
void	invalidateCaches()
void	readInstr() Instruction fetch, always 32 bit
int	readMemory(int address) Read a word from the memory
void	readWord(int adr) Load data
void	setEntry(int entry, int globalPointer) Set the entry address if memory contains a executable program
void	swapCaches()
int	translateAddress(int adr) Address translation
int	translateDataAdr(int adr)
int	translateInstrAdr(int adr)
int	translateWordAddress(int adr)
void	unswapCaches()
void	writeMemory(int address, int word) Write a word into the memory
void	writeWord(int adr, int value) Store data

Methods inherited from class hades.models.mips.mipsmemory.AccessMemory

getBigEndian, getLog, initCacheSelection, por, reset, setBigEndian, setLog, translateAddress

Methods inherited from class java.lang.Object

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

Field Detail

internalMem

protected int[] internalMem

INTERNAL_MEM_SIZE

public static final int INTERNAL_MEM_SIZE

See Also:

Constant Field Values

entryHandler

protected EntryHandler entryHandler

entryHandlerInstalled

protected boolean entryHandlerInstalled

instrResult

protected int instrResult

dataResult

protected int dataResult

Constructor Detail

FastAccessMemory

public FastAccessMemory(PartHandler newPartHandler)

Method Detail

invalidateCaches

public void invalidateCaches()

Overrides:

invalidateCaches in class AccessMemory

swapCaches

public void swapCaches()

Overrides:

swapCaches in class AccessMemory

unswapCaches

public void unswapCaches()

Overrides:

unswapCaches in class AccessMemory

translateAddress

public int translateAddress(int adr)

Address translation

Overrides:

translateAddress in class AccessMemory

translateWordAddress

public int translateWordAddress(int adr)

Overrides:

translateWordAddress in class AccessMemory

translateInstrAdr

public int translateInstrAdr(int adr)

Overrides:

translateInstrAdr in class AccessMemory

translateDataAdr

public int translateDataAdr(int adr)

Overrides:

translateDataAdr in class AccessMemory

readInstr

public void readInstr()

Instruction fetch, always 32 bit

Overrides:

readInstr in class AccessMemory

fetchInstr

public int fetchInstr()

Overrides:

fetchInstr in class AccessMemory

readWord

public void readWord(int adr)

Load data

Overrides:

readWord in class AccessMemory

getReadResult

public int getReadResult()

Overrides:

getReadResult in class AccessMemory

writeWord

public void writeWord(int adr,
                      int value)

Store data

Overrides:

writeWord in class AccessMemory

beginCycle

public boolean beginCycle()

Cycle

Overrides:

beginCycle in class AccessMemory

endCycle

public void endCycle()

Overrides:

endCycle in class AccessMemory

getWordWidth

public int getWordWidth()

Witdh of one word in bits

Specified by:

getWordWidth in interface Memory

Overrides:

getWordWidth in class AccessMemory

getMemorySize

public int getMemorySize()

Capacity of the memory in words

Specified by:

getMemorySize in interface Memory

Overrides:

getMemorySize in class AccessMemory

readMemory

public int readMemory(int address)

Read a word from the memory

Specified by:

readMemory in interface Memory

Overrides:

readMemory in class AccessMemory

writeMemory

public void writeMemory(int address,
                        int word)

Write a word into the memory

Specified by:

writeMemory in interface Memory

Overrides:

writeMemory in class AccessMemory

setEntry

public void setEntry(int entry,
                     int globalPointer)

Set the entry address if memory contains a executable program

Specified by:

setEntry in interface Memory

Overrides:

setEntry in class AccessMemory

installEntryHandler

public void installEntryHandler(EntryHandler newEntryHandler)

setEntry() calles this EntryHandler

Specified by:

installEntryHandler in interface Memory

Overrides:

installEntryHandler in class AccessMemory