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 class LogicDecoder extends Format3ADecoder {

    30     LogicDecoder(int op3, String name, int rtlOperation) {

    31         super(op3, name, rtlOperation);

    32     }

    33 

    34     Instruction decodeFormat3AInstruction(int instruction,

    35                                            SPARCRegister rs1,

    36                                            ImmediateOrRegister operand2,

    37                                            SPARCRegister rd,

    38                                            SPARCInstructionFactory factory) {

    39         Instruction instr = null;

    40         if (op3 == OR && rs1 == SPARCRegisters.G0 && rd != SPARCRegisters.G0) {

    41             instr = factory.newMoveInstruction(name, op3, operand2, rd);

    42         } else {

    43             instr = factory.newLogicInstruction(name, op3, rtlOperation, rs1, operand2, rd);

    44         }

    45         return instr;

    46     }

    47 }