1 /*
   2  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores,
  20  * CA 94065 USA or visit www.oracle.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.asm;
  26 
  27 // address is calculated as (base + (index * scale) + displacement)
  28 // optionally index is auto incremented or decremented
  29 
  30 public abstract class BaseIndexScaleDispAddress extends IndirectAddress {
  31    private final Register base, index;
  32    private final int      scale;
  33    private final long     disp;
  34    private boolean  isAutoIncr;
  35    private boolean  isAutoDecr;
  36 
  37    public BaseIndexScaleDispAddress(Register base, Register index, long disp, int scale) {
  38       this.base = base;
  39       this.index = index;
  40       this.disp = disp;
  41       this.scale = scale;
  42    }
  43 
  44    public BaseIndexScaleDispAddress(Register base, Register index, long disp) {
  45       this(base, index, disp, 1);
  46    }
  47 
  48    public BaseIndexScaleDispAddress(Register base, Register index) {
  49       this(base, index, 0L, 1);
  50    }
  51 
  52    public BaseIndexScaleDispAddress(Register base, long disp) {
  53       this(base, null, disp, 1);
  54    }
  55 
  56    public Register getBase() {
  57       return base;
  58    }
  59 
  60    public Register getIndex() {
  61       return index;
  62    }
  63 
  64    public int      getScale() {
  65       return scale;
  66    }
  67 
  68    public long     getDisplacement() {
  69       return disp;
  70    }
  71 
  72    // is the index auto decremented or incremented?
  73    public boolean  isAutoIncrement() {
  74       return isAutoIncr;
  75    }
  76 
  77    public void setAutoIncrement(boolean value) {
  78       isAutoIncr = value;
  79    }
  80 
  81    public boolean  isAutoDecrement() {
  82       return isAutoDecr;
  83    }
  84 
  85    public void setAutoDecrement(boolean value) {
  86       isAutoDecr = value;
  87    }
  88 }