jnr.a64asm.Operand Maven / Gradle / Ivy

/*
 * Copyright (C) 2018 Ossdev07
 *
 * This file is part of the JNR project.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package jnr.a64asm;

import static jnr.a64asm.OP.*;

public class Operand {
    private final int op;
    private final int size;

    public Operand(int op, int size) {
        this.op = op;
        this.size = size;
    }

    /** Return type of operand, see @c OP. */
    public int op() {
        return op;
    }

    public int size() {
        return size;
    }

    /** Return @c true if operand is none (@c OP_NONE). */
    public boolean isNone() {
        return op() == OP_NONE;
    }

    /** Return @c true if operand is any (general purpose, mmx or sse) register (@c OP_REG). */
    public boolean isReg() {
        return op() == OP_REG;
    }

    /** Return @c true if operand is memory address (@c OP_MEM). */
    public boolean isMem() {
        return op() == OP_MEM;
    }

    /** Return @c true if operand is immediate (@c OP_IMM). */
    public boolean isImm() {
        return op() == OP_IMM;
    }

    /** Return @c true if operand is label (@c OP_LABEL). */
    public boolean isLabel() {
        return op() == OP_LABEL;
    }

    /** Return @c true if operand is label (@c OP_LABEL). */
    public boolean isExtend() {
        return op() == OP_EXT;
    }

    public boolean isCond() {
        return op() == OP_COND;
    }

    public boolean isPrefOp() {
        return op() == OP_PREFOP;
    }

    public boolean isPreIndex() {
        return op() == OP_PREINDEX;
    }

    public boolean isPostIndex() {
        return op() == OP_POSTINDEX;
    }

    public boolean isOffset() {
        return op() == OP_OFFSET;
    }

    public boolean isPrfop() {
        return op() == OP_PRFOP;
    }

    /** Return @c true if operand is any register or memory. */
    public final boolean isRegMem() {
        return isMem() || isReg();
    }

    public final boolean isRegCode(int code) {
        return this instanceof BaseReg && ((BaseReg) this).code() == code;
    }

    public final boolean isRegType(int type) {
        return this instanceof BaseReg && ((BaseReg) this).type() == type;
    }

    public final boolean isRegIndex(int index) {
        return this instanceof BaseReg && ((BaseReg) this).index() == index;
    }

    /** @brief Return @c true if operand is register of @a regType type or memory. */
    public final boolean isRegMem(int regType) {
        return isMem() || isRegType(regType);
    }
}