/*
 * Copyright 2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

package sun.jvm.hotspot.asm.sparc;

import sun.jvm.hotspot.asm.*;
import sun.jvm.hotspot.utilities.Assert;

public class SPARCV9WriteInstruction extends SPARCV9SpecialRegisterInstruction {
    final private int specialReg;
    final private int asrRegNum;
    final private SPARCRegister rs1;
    final private ImmediateOrRegister operand2;

    public SPARCV9WriteInstruction(int specialReg, int asrRegNum, SPARCRegister rs1, ImmediateOrRegister operand2)  {
        super("wr");
        this.specialReg = specialReg;
        this.asrRegNum = asrRegNum;
        this.rs1 = rs1;
        this.operand2 = operand2;
    }

    public int getSpecialRegister() {
        return specialReg;
    }

    public int getAncillaryRegister() {
        if (Assert.ASSERTS_ENABLED)
            Assert.that(specialReg == ASR, "not an ancillary register");
        return asrRegNum;
    }

    protected String getDescription() {
        StringBuffer buf = new StringBuffer();
        buf.append(getName());
        buf.append(spaces);
        buf.append(rs1.toString());
        buf.append(comma);
        if (operand2.isRegister()) {
            buf.append(operand2.toString());
        } else {
            Number number = ((Immediate)operand2).getNumber();
            buf.append("0x");
            buf.append(Integer.toHexString(number.intValue()));
        }
        buf.append(comma);

        if(specialReg == ASR)
            buf.append("%asr" + asrRegNum);
        else
            buf.append(getSpecialRegisterName(specialReg));
        return buf.toString();
    }
}
