1 /*
   2  * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any 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 }