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 

    29 public class SPARCStoreInstruction extends SPARCMemoryInstruction

    30     implements StoreInstruction {

    31     final protected SPARCRegister register2; // used by double word store instructions

    32     final protected Register[] storeSources;

    33 

    34     public SPARCStoreInstruction(String name, int opcode, SPARCRegisterIndirectAddress address, SPARCRegister register, int dataType) {

    35         super(name, opcode, address, register, dataType);

    36         if (opcode == STD || opcode == STDA) {

    37             storeSources = new Register[2];

    38             storeSources[0] = register;

    39             int nextRegNum = (register.getNumber() + 1) % SPARCRegisters.NUM_REGISTERS;

    40             register2 = SPARCRegisters.getRegister(nextRegNum);

    41             storeSources[1] = register2;

    42         } else {

    43             storeSources = new Register[1];

    44             storeSources[0] = register;

    45             register2 = null;

    46         }

    47     }

    48 

    49     private String defaultInitDescription(StringBuffer buf) {

    50         buf.append(getName());

    51         buf.append(spaces);

    52         buf.append(register.toString());

    53         buf.append(comma);

    54         buf.append(address.toString());

    55         return buf.toString();

    56     }

    57 

    58     protected String getDescription() {

    59         StringBuffer buf = new StringBuffer();

    60         if (register == SPARCRegisters.G0) {

    61             switch (opcode) {

    62                 case ST:

    63                     buf.append("clr");

    64                     break;

    65                 case STH:

    66                     buf.append("clrh");

    67                     break;

    68                 case STB:

    69                     buf.append("clrb");

    70                     break;

    71                 default:

    72                     return defaultInitDescription(buf);

    73             }

    74             buf.append(spaces);

    75             buf.append(address.toString());

    76             return buf.toString();

    77         } else {

    78             return defaultInitDescription(buf);

    79         }

    80     }

    81 

    82     public int getDataType() {

    83         return dataType;

    84     }

    85 

    86     public Address getStoreDestination() {

    87         return address;

    88     }

    89 

    90     public Register[] getStoreSources() {

    91         return storeSources;

    92     }

    93 

    94     public boolean isStore() {

    95         return true;

    96     }

    97 }