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MACRO, Macros for 64-Bit Addressing, $CALL64
 *Conan The Librarian 

    Invokes the target routine.

    Format

      $CALL64  call_target

  1 - Parameters 

 call_target

    The routine to be invoked.

  2 - Description 

    This macro calls the specified routine, assuming $SETUP_CALL64
    has been used to specify the argument count, and $PUSH_ARG64 has
    been used to push the quadword arguments. This macro checks that
    the number of pushes matches what was specified in the setup
    call.

    The call_target operand must not be AP- or SP-based.
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