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.sparc;

    26 

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

    28 import sun.jvm.hotspot.utilities.Assert;

    29 

    30 public class SPARCWriteInstruction extends SPARCSpecialRegisterInstruction {

    31     final private int specialReg;

    32     final private int asrRegNum;

    33     final private SPARCRegister rs1;

    34     final private ImmediateOrRegister operand2;

    35 

    36     public SPARCWriteInstruction(int specialReg, int asrRegNum, SPARCRegister rs1, ImmediateOrRegister operand2)  {

    37         super("wr");

    38         this.specialReg = specialReg;

    39         this.asrRegNum = asrRegNum;

    40         this.rs1 = rs1;

    41         this.operand2 = operand2;

    42     }

    43 

    44     public int getSpecialRegister() {

    45         return specialReg;

    46     }

    47 

    48     public int getAncillaryRegister() {

    49         if (Assert.ASSERTS_ENABLED)

    50             Assert.that(specialReg == ASR, "not an ancillary register");

    51         return asrRegNum;

    52     }

    53 

    54     protected String getDescription() {

    55         StringBuffer buf = new StringBuffer();

    56         buf.append(getName());

    57         buf.append(spaces);

    58         buf.append(rs1.toString());

    59         buf.append(comma);

    60         if (operand2.isRegister()) {

    61             buf.append(operand2.toString());

    62         } else {

    63             Number number = ((Immediate)operand2).getNumber();

    64             buf.append("0x");

    65             buf.append(Integer.toHexString(number.intValue()));

    66         }

    67         buf.append(comma);

    68 

    69         if(specialReg == ASR)

    70             buf.append("%asr" + asrRegNum);

    71         else

    72             buf.append(getSpecialRegisterName(specialReg));

    73         return buf.toString();

    74     }

    75 }