com.cmpware.cmp.memory
Class BigEndianMemory

java.lang.Object
  com.cmpware.cmp.memory.LittleEndianMemory
      com.cmpware.cmp.memory.BigEndianMemory

All Implemented Interfaces:

MemoryInterface, ReadWriteInterface

public class BigEndianMemory
extends LittleEndianMemory
implements MemoryInterface

This class implements the Big Endian memory module.

Copyright (c) 2004, 2005 Cmpware, Inc. All Rights Reserved.

Author:

SAG

Field Summary

Fields inherited from class com.cmpware.cmp.memory.LittleEndianMemory

baseAddr, copyright, DEFAULT_MEMORY_SIZE, maxProfile, memory, profile, PROFILE_GRANULARITY

Constructor Summary

BigEndianMemory()
Constructor

BigEndianMemory(byte[] b)
Constructor

BigEndianMemory(int size)
Constructor

Method Summary

boolean	getEndian() This method returns the endian (byte order) of the memory.
short	read16(int addr) This method returns a 16-bit short from the memory at address 'addr'.
int	read24(int addr) This method returns a 24-bit unsigned integer from the memory at address 'addr'.
int	read32(int addr) This method returns a 32-bit int from the memory at address 'addr'.
long	read64(int addr) This method returns a 64-bit long from the memory at address 'addr'.
void	write16(int addr, short a) This method writes the 16-bit value 'a' to the requested memory address.
void	write24(int addr, int a) This method writes a 24-bit value 'a' to the requested memory address.
void	write32(int addr, int a) This method writes the 32-bit value 'a' to the requested memory address.
void	write64(int addr, long a) This method writes the 64-bit value 'a' to the requested memory address.

Methods inherited from class com.cmpware.cmp.memory.LittleEndianMemory

clearProfile, get, getBaseAddress, getMaxProfile, getOffset, getProfile, getProfile, getProfileGranularity, isReadable, isValidAddress, isWriteable, profile, read, resize, setBaseAddress, setEndian, size, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.cmpware.cmp.memory.MemoryInterface

clearProfile, get, getBaseAddress, getMaxProfile, getProfile, getProfile, getProfileGranularity, isValidAddress, profile, resize, setBaseAddress, setEndian, size

Methods inherited from interface com.cmpware.cmp.memory.ReadWriteInterface

isReadable, isWriteable, read, write

Constructor Detail

BigEndianMemory

public BigEndianMemory()

Constructor

BigEndianMemory

public BigEndianMemory(int size)

Constructor

Parameters:

size - The size of the memory in bytes

BigEndianMemory

public BigEndianMemory(byte[] b)

Constructor

Parameters:

b - The byte array used as the memory store.

Method Detail

getEndian

public boolean getEndian()

Description copied from interface: MemoryInterface

This method returns the endian (byte order) of the memory.

Specified by:

getEndian in interface MemoryInterface

Overrides:

getEndian in class LittleEndianMemory

Returns:

This method returns the endian (byte order) of the memory.

read16

public short read16(int addr)
             throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method returns a 16-bit short from the memory at address 'addr'.

Specified by:

read16 in interface ReadWriteInterface

Overrides:

read16 in class LittleEndianMemory

Parameters:

addr - The memory address.

Returns:

The requested data is returned from the memory.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

read24

public int read24(int addr)
           throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method returns a 24-bit unsigned integer from the memory at address 'addr'. The value is returned as a 32-bit int, with the upper 8 bits always zero.

Specified by:

read24 in interface ReadWriteInterface

Overrides:

read24 in class LittleEndianMemory

Parameters:

addr - The memory address.

Returns:

The requested data is returned from the memory.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

read32

public int read32(int addr)
           throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method returns a 32-bit int from the memory at address 'addr'. Note that this method also attempts a Memory Mapped IO if an illegal memory address is encountered.

Specified by:

read32 in interface ReadWriteInterface

Overrides:

read32 in class LittleEndianMemory

Parameters:

addr - The memory address.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

read64

public long read64(int addr)
            throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method returns a 64-bit long from the memory at address 'addr'.

Specified by:

read64 in interface ReadWriteInterface

Overrides:

read64 in class LittleEndianMemory

Parameters:

addr - The memory address.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

write16

public void write16(int addr,
                    short a)
             throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method writes the 16-bit value 'a' to the requested memory address.

Specified by:

write16 in interface ReadWriteInterface

Overrides:

write16 in class LittleEndianMemory

Parameters:

addr - The memory address.

a - The value to be written.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

write24

public void write24(int addr,
                    int a)
             throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method writes a 24-bit value 'a' to the requested memory address. The upper 8 bits of the value of 'a' are always ignored.

Specified by:

write24 in interface ReadWriteInterface

Overrides:

write24 in class LittleEndianMemory

Parameters:

addr - The memory address.

a - The value to be written.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

write32

public void write32(int addr,
                    int a)
             throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method writes the 32-bit value 'a' to the requested memory address.

Specified by:

write32 in interface ReadWriteInterface

Overrides:

write32 in class LittleEndianMemory

Parameters:

addr - The memory address.

a - The value to be written.

Throws:

MemoryAccessException - if an illegal memory address is encountered.

write64

public void write64(int addr,
                    long a)
             throws MemoryAccessException

Description copied from interface: ReadWriteInterface

This method writes the 64-bit value 'a' to the requested memory address.

Specified by:

write64 in interface ReadWriteInterface

Overrides:

write64 in class LittleEndianMemory

Parameters:

addr - The memory address.

a - The value to be written.

Throws:

MemoryAccessException - if an illegal memory address is encountered.