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, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * 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 }