modules/cldc-compact/src/main/java/cc/squirreljme/jvm/SupervisorPropertyIndex.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the GNU General Public License v3+, or later.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package cc.squirreljme.jvm;
  11
  12 /**
  13  * This indicates an index for a supervisor register which is controlled and
  14  * only settable by the supervisor. It is used in system call handling and
  15  * otherwise.
  16  *
  17  * @since 2019/10/04
  18  */
  19 public interface SupervisorPropertyIndex
  20 {
  21         /** The static field register of the task syscall handler. */
  22         byte TASK_SYSCALL_STATIC_FIELD_POINTER =
  23                 1;
  24
  25         /** The method pointer of the task syscall method. */
  26         byte TASK_SYSCALL_METHOD_HANDLER =
  27                 2;
  28
  29         /** The pool pointer of the task syscall method. */
  30         byte TASK_SYSCALL_METHOD_POOL_POINTER =
  31                 3;
  32
  33         /** The number of available properties. */
  34         byte NUM_PROPERTIES =
  35                 4;
  36 }
  37