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1 /*
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2 * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.asm;
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26
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27 // address is calculated as (base + (index * scale) + displacement)
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28 // optionally index is auto incremented or decremented
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29
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30 public abstract class BaseIndexScaleDispAddress extends IndirectAddress {
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31 private final Register base, index;
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32 private final int scale;
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33 private final long disp;
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34 private boolean isAutoIncr;
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35 private boolean isAutoDecr;
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36
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37 public BaseIndexScaleDispAddress(Register base, Register index, long disp, int scale) {
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38 this.base = base;
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39 this.index = index;
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40 this.disp = disp;
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41 this.scale = scale;
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42 }
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43
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44 public BaseIndexScaleDispAddress(Register base, Register index, long disp) {
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45 this(base, index, disp, 1);
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46 }
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47
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48 public BaseIndexScaleDispAddress(Register base, Register index) {
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49 this(base, index, 0L, 1);
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50 }
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51
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52 public BaseIndexScaleDispAddress(Register base, long disp) {
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53 this(base, null, disp, 1);
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54 }
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55
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56 public Register getBase() {
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57 return base;
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58 }
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59
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60 public Register getIndex() {
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61 return index;
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62 }
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63
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64 public int getScale() {
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65 return scale;
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66 }
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67
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68 public long getDisplacement() {
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69 return disp;
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70 }
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71
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72 // is the index auto decremented or incremented?
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73 public boolean isAutoIncrement() {
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74 return isAutoIncr;
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75 }
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76
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77 public void setAutoIncrement(boolean value) {
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78 isAutoIncr = value;
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79 }
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80
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81 public boolean isAutoDecrement() {
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82 return isAutoDecr;
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83 }
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84
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85 public void setAutoDecrement(boolean value) {
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86 isAutoDecr = value;
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87 }
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88 }
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