The GNU Modula-2 front end to GCC

gm2-libs-pim/BitBlockOps

DEFINITION MODULE BitBlockOps ;

(*
    Description: provides a Logitech compatible module.
*)


FROM SYSTEM IMPORT ADDRESS ;


(*
   BlockAnd - performs a bitwise AND on blocks
              [dest..dest+size-1] := [dest..dest+size-1] AND
                                     [src..src+size-1]
*)


PROCEDURE BlockAnd (dest, src: ADDRESS; size: CARDINAL) ;


(*
   BlockOr - performs a bitwise OR on blocks
             [dest..dest+size-1] := [dest..dest+size-1] OR
                                    [src..src+size-1]
*)


PROCEDURE BlockOr (dest, src: ADDRESS; size: CARDINAL) ;


(*
   BlockXor - performs a bitwise XOR on blocks
              [dest..dest+size-1] := [dest..dest+size-1] XOR
                                     [src..src+size-1]
*)


PROCEDURE BlockXor (dest, src: ADDRESS; size: CARDINAL) ;


(*
   BlockNot - performs a bitsize NOT on the block as defined
              by:  [dest..dest+size-1]
*)


PROCEDURE BlockNot (dest: ADDRESS; size: CARDINAL) ;


(*
   BlockShr - performs a block shift right of, count, bits.
              Where the block is defined as:
              [dest..dest+size-1].
              The block is considered to be an ARRAY OF BYTEs
              which is shifted, bit at a time over each byte in
              turn.  The left most byte is considered the byte
              located at the lowest address.
              If you require an endianness SHIFT use
              the SYSTEM.SHIFT procedure and declare the
              block as a POINTER TO set type.
*)


PROCEDURE BlockShr (dest: ADDRESS; size, count: CARDINAL) ;


(*
   BlockShl - performs a block shift left of, count, bits.
              Where the block is defined as:
              [dest..dest+size-1].
              The block is considered to be an ARRAY OF BYTEs
              which is shifted, bit at a time over each byte in
              turn.  The left most byte is considered the byte
              located at the lowest address.
              If you require an endianness SHIFT use
              the SYSTEM.SHIFT procedure and declare the
              block as a POINTER TO set type.
*)


PROCEDURE BlockShl (dest: ADDRESS; size, count: CARDINAL) ;


(*
   BlockRor - performs a block rotate right of, count, bits.
              Where the block is defined as:
              [dest..dest+size-1].
              The block is considered to be an ARRAY OF BYTEs
              which is rotated, bit at a time over each byte in
              turn.  The left most byte is considered the byte
              located at the lowest address.
              If you require an endianness ROTATE use
              the SYSTEM.ROTATE procedure and declare the
              block as a POINTER TO set type.
*)


PROCEDURE BlockRor (dest: ADDRESS; size, count: CARDINAL) ;


(*
   BlockRol - performs a block rotate left of, count, bits.
              Where the block is defined as:
              [dest..dest+size-1].
              The block is considered to be an ARRAY OF BYTEs
              which is rotated, bit at a time over each byte in
              turn.  The left most byte is considered the byte
              located at the lowest address.
              If you require an endianness ROTATE use
              the SYSTEM.ROTATE procedure and declare the
              block as a POINTER TO set type.
*)


PROCEDURE BlockRol (dest: ADDRESS; size, count: CARDINAL) ;


END BitBlockOps.