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 abstract class V9AlternateSpaceDecoder extends MemoryInstructionDecoder

    30                     implements V9InstructionDecoder {

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

    32         super(op3, name, dataType);

    33     }

    34 

    35     SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, SPARCRegister rs2) {

    36         return new SPARCV9RegisterIndirectAddress(rs1, rs2);

    37     }

    38 

    39     SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, int offset) {

    40         return new SPARCV9RegisterIndirectAddress(rs1, offset);

    41     }

    42 

    43     abstract Instruction decodeV9AsiLoadStore(int instruction,

    44                                               SPARCV9RegisterIndirectAddress addr,

    45                                               SPARCRegister rd,

    46                                               SPARCV9InstructionFactory factory);

    47 

    48     Instruction decodeMemoryInstruction(int instruction,

    49                                    SPARCRegisterIndirectAddress addr,

    50                                    SPARCRegister rd, SPARCInstructionFactory factory) {

    51         SPARCV9RegisterIndirectAddress v9addr = (SPARCV9RegisterIndirectAddress) addr;

    52         if (isIBitSet(instruction)) {

    53             // indirect asi

    54             v9addr.setIndirectAsi(true);

    55         } else {

    56             // immediate asi

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

    58             v9addr.setAddressSpace(asi);

    59         }

    60         return decodeV9AsiLoadStore(instruction, v9addr, rd,

    61                                     (SPARCV9InstructionFactory) factory);

    62     }

    63 }