Class SegmentedAddress

  • All Implemented Interfaces:
    Address, java.lang.Comparable<Address>

    public class SegmentedAddress
    extends GenericAddress
    Address class for dealing with (intel) segmented addresses. The class itself is agnostic about the mapping from segmented encoding to flat address offset, it uses the SegmentedAddressSpace to perform this mapping. So the same class can be used to represent either a real-mode address or a protected-mode address. The class uses the underlying offset field to hold the flat encoding.
    • Method Detail

      • getSegment

        public int getSegment()
        Returns the segment value
        Returns:
        int the segment value
      • getSegmentOffset

        public int getSegmentOffset()
        Returns the offset within the segment.
        Returns:
        the offset value
      • normalize

        public SegmentedAddress normalize​(int seg)
        Returns a new address that is equivalent to this address using the given segment number.
        Parameters:
        seg - the seqment value to normalize to.
        Returns:
        the new address
      • getNewAddress

        public Address getNewAddress​(long addrOffset,
                                     boolean isAddressableWordOffset)
                              throws AddressOutOfBoundsException
        Description copied from interface: Address
        Returns a new address in this address's space with the given offset. NOTE: for those spaces with an addressable unit size other than 1, the address returned may not correspond to an addressable unit/word boundary if a byte-offset is specified.
        Specified by:
        getNewAddress in interface Address
        Overrides:
        getNewAddress in class GenericAddress
        Parameters:
        addrOffset - the offset for the new address.
        isAddressableWordOffset - if true the specified offset is an addressable unit/word offset, otherwise offset is a byte offset. See AddressSpace#getAddressableUnitSize() to understand the distinction (i.e., wordOffset = byteOffset * addressableUnitSize).
        Returns:
        address with given offset
        Throws:
        AddressOutOfBoundsException - if the offset is less than 0 or greater than the max offset allowed for this space.
      • getNewTruncatedAddress

        public Address getNewTruncatedAddress​(long addrOffset,
                                              boolean isAddressableWordOffset)
                                       throws AddressOutOfBoundsException
        Description copied from interface: Address
        Returns a new address in this address's space with the given offset. The specified offset will be truncated within the space and will not throw an exception. NOTE: for those spaces with an addressable unit size other than 1, the address returned may not correspond to a word boundary (addressable unit) if a byte-offset is specified.
        Specified by:
        getNewTruncatedAddress in interface Address
        Overrides:
        getNewTruncatedAddress in class GenericAddress
        Parameters:
        addrOffset - the offset for the new address.
        isAddressableWordOffset - if true the specified offset is an addressable unit/word offset, otherwise offset is a byte offset. See AddressSpace#getAddressableUnitSize() to understand the distinction (i.e., wordOffset = byteOffset * addressableUnitSize).
        Returns:
        address with given byte offset truncated to the physical space size
        Throws:
        AddressOutOfBoundsException
      • toString

        public java.lang.String toString​(java.lang.String prefix)
        Description copied from interface: Address
        Returns a String representation of the address using the given string as a prefix. Equivalent of prefix + ":" + toString(false)
        Specified by:
        toString in interface Address
        Overrides:
        toString in class GenericAddress
        Parameters:
        prefix - the string to prepend to the address string.
        See Also:
        Address.toString(String)
      • toString

        public java.lang.String toString​(boolean showAddressSpace,
                                         int minNumDigits)
        Description copied from interface: Address
        Returns a String representation that may include the address space name and may or may not pad the address with leading zeros.
        Specified by:
        toString in interface Address
        Overrides:
        toString in class GenericAddress
        Parameters:
        showAddressSpace - if true, the addressSpace name will be prepended to the address string.
        minNumDigits - specifies the minimum number of digits to use. If the address space size is less that minNumDigits, the address will be padded to the address space size. If the address space size is larger that minNumDigits, the address will be displayed with as many digits as necessary, but will contain leading zeros to make the address string have at least minNumDigits.
        Returns:
        the address as a String.