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.sparc;
  26 
  27 import sun.jvm.hotspot.asm.*;
  28 
  29 public class SPARCSethiInstruction extends SPARCInstruction
  30     implements MoveInstruction {
  31     final private SPARCRegister register;
  32     final private ImmediateOrRegister value;
  33     final private String description;
  34 
  35     public SPARCSethiInstruction(int value, SPARCRegister register) {
  36         super("sethi");
  37         this.register = register;
  38         value <<= 10;
  39         this.value = new Immediate(new Integer(value));
  40         description = initDescription(value);
  41     }
  42 
  43     private String initDescription(int val) {
  44         if (val == 0 && register == SPARCRegisters.G0) {
  45             return "nop";
  46         } else {
  47             StringBuffer buf = new StringBuffer();
  48             buf.append(getName());
  49             buf.append(spaces);
  50             buf.append("%hi(0x");
  51             buf.append(Integer.toHexString(val));
  52             buf.append(')');
  53             buf.append(comma);
  54             buf.append(register.toString());
  55             return buf.toString();
  56         }
  57     }
  58 
  59     public String asString(long currentPc, SymbolFinder symFinder) {
  60         return description;
  61     }
  62 
  63     public Register getMoveDestination() {
  64         return register;
  65     }
  66 
  67     public ImmediateOrRegister getMoveSource() {
  68         return value;
  69     }
  70 
  71     public boolean isConditional() {
  72         return false;
  73     }
  74 }