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.*;

    28 

    29 public class SSEMoveDecoder extends SSEInstructionDecoder {

    30 

    31    public SSEMoveDecoder(String name, int addrMode1, int operandType1, int addrMode2, int operandType2) {

    32       super(name, addrMode1, operandType1, addrMode2, operandType2);

    33    }

    34 

    35    protected Instruction decodeInstruction(byte[] bytesArray, boolean operandSize, boolean addrSize, X86InstructionFactory factory) {

    36       Operand op1 = getOperand1(bytesArray, operandSize, addrSize);

    37       Operand op2 = getOperand2(bytesArray, operandSize, addrSize);

    38       int size = byteIndex - instrStartIndex;

    39 

    40       if( (op1 instanceof X86Register) && (op2 instanceof ImmediateOrRegister) ) {

    41          return factory.newMoveInstruction(name, (X86Register)op1, (ImmediateOrRegister)op2, size, 0);

    42       }

    43       else if( (op1 instanceof Address) && (op2 instanceof Immediate) ) {

    44          return factory.newGeneralInstruction(name, op1, op2, size, 0);

    45       }

    46       else if( (op1 instanceof Address) && (op2 instanceof X86Register) ) {

    47          return factory.newMoveStoreInstruction(name, (Address)op1, (X86Register)op2, 0, size, 0);

    48       }

    49       else if( (op1 instanceof X86Register) && (op2 instanceof Address) ) {

    50          return factory.newMoveLoadInstruction(name, (X86Register)op1, (Address)op2, 0, size, 0);

    51       }

    52 

    53       return null;

    54    }

    55 }