1 /*

     2  * Copyright (c) 2003, 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.x86;

    26 

    27 import sun.jvm.hotspot.asm.Address;

    28 import sun.jvm.hotspot.asm.BaseIndexScaleDispAddress;

    29 

    30 public class X86RegisterIndirectAddress extends BaseIndexScaleDispAddress {

    31 

    32    final private X86SegmentRegister segReg;

    33 

    34    public X86RegisterIndirectAddress(X86SegmentRegister segReg, X86Register base, X86Register index, long disp, int scale) {

    35       super(base, index, disp, scale);

    36       this.segReg = segReg;

    37    }

    38 

    39    public X86RegisterIndirectAddress(X86SegmentRegister segReg, X86Register base, X86Register index, long disp) {

    40       super(base, index, disp, -1);

    41       this.segReg = segReg;

    42    }

    43 

    44    public String toString() {

    45       StringBuffer buf = new StringBuffer();

    46       if(segReg != null) {

    47          buf.append(segReg.toString());

    48          buf.append(":");

    49       }

    50 

    51       long disp = getDisplacement();

    52       if(disp != 0)

    53           buf.append(disp);

    54 

    55       sun.jvm.hotspot.asm.Register base = getBase();

    56       sun.jvm.hotspot.asm.Register index = getIndex();

    57       int scaleVal = getScale();

    58       scaleVal = 1 << scaleVal;

    59 

    60       if( (base != null) || (index != null) || (scaleVal > 1) )

    61          buf.append('[');

    62 

    63       if(base != null) {

    64          buf.append(base.toString());

    65          if(index != null) {

    66             buf.append("+");

    67             buf.append(index.toString());

    68          }

    69       }

    70       else {

    71          if(index != null) {

    72             buf.append(index.toString());

    73          }

    74       }

    75 

    76       if (scaleVal > 1) {

    77          buf.append(" * ");

    78          buf.append(Integer.toString(scaleVal));

    79       }

    80 

    81       if( (base != null) || (index != null) || (scaleVal > 1) )

    82          buf.append(']');

    83 

    84       return buf.toString();

    85    }

    86 }