/*

 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

package sun.jvm.hotspot.asm.sparc;

import sun.jvm.hotspot.asm.*;

abstract class V9AlternateSpaceDecoder extends MemoryInstructionDecoder

                    implements V9InstructionDecoder {

    V9AlternateSpaceDecoder(int op3, String name, int dataType) {

        super(op3, name, dataType);

    }

    SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, SPARCRegister rs2) {

        return new SPARCV9RegisterIndirectAddress(rs1, rs2);

    }

    SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, int offset) {

        return new SPARCV9RegisterIndirectAddress(rs1, offset);

    }

    abstract Instruction decodeV9AsiLoadStore(int instruction,

                                              SPARCV9RegisterIndirectAddress addr,

                                              SPARCRegister rd,

                                              SPARCV9InstructionFactory factory);

    Instruction decodeMemoryInstruction(int instruction,

                                   SPARCRegisterIndirectAddress addr,

                                   SPARCRegister rd, SPARCInstructionFactory factory) {

        SPARCV9RegisterIndirectAddress v9addr = (SPARCV9RegisterIndirectAddress) addr;

        if (isIBitSet(instruction)) {

            // indirect asi

            v9addr.setIndirectAsi(true);

        } else {

            // immediate asi

            int asi = (instruction & ASI_MASK) >>> ASI_START_BIT;

            v9addr.setAddressSpace(asi);

        }

        return decodeV9AsiLoadStore(instruction, v9addr, rd,

                                    (SPARCV9InstructionFactory) factory);

    }

}