Macros_for_64-Bit_Addressing

   These macros reside in the directory SYS$LIBRARY:STARLET.MLB and
   can be used by both application code and system code.

   The page macros accommodate for 64-bit addresses. The support is
   provided by the QUAD=NO/YES parameter.

   You can use certain arguments to these macros to indicate
   register sets. To express a register set, list the registers,
   separated by commas, within angle brackets. For example:

   <R1,R2,R3>

   If the set contains only one register, the angle brackets are not
   required.
 

Additional information available:

$SETUP_CALL64   $PUSH_ARG64     $CALL64         $IS_32BITS      $IS_DESC64