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 V9MOVrDecoder extends V9CMoveDecoder {

    30     private static final String regConditionNames[] = {

    31         null, "movrz", "movrlez", "movrlz", null, "movrnz", "movrgz", "movrgez"

    32     };

    33 

    34     private static String getMOVrName(int conditionCode) {

    35         return regConditionNames[conditionCode];

    36     }

    37 

    38     Instruction decode(int instruction, SPARCInstructionFactory factory) {

    39         SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory;

    40         Instruction instr = null;

    41         int regConditionCode = getRegisterConditionCode(instruction);

    42         String name = getMOVrName(regConditionCode);

    43         if (name == null) {

    44             instr = v9factory.newIllegalInstruction(instruction);

    45         } else {

    46             int rdNum = getDestinationRegister(instruction);

    47             SPARCRegister rd = SPARCRegisters.getRegister(rdNum);

    48             SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction));

    49             ImmediateOrRegister operand2 = getCMoveSource(instruction, 10);

    50             instr = v9factory.newV9MOVrInstruction(name, rs1, operand2, rd, regConditionCode);

    51         }

    52 

    53         return instr;

    54     }

    55 }