/*

 * Copyright (c) 2018, Red Hat, 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

 * questions.

 */

/*

 * @test

 * @bug 8211320

 * @summary Aarch64: unsafe.compareAndSetByte() and unsafe.compareAndSetShort() c2 intrinsics broken with negative expected value

 *

 * @modules java.base/jdk.internal.misc

 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation  CASandCAEwithNegExpected

 */

import java.lang.reflect.Field;

import jdk.internal.misc.Unsafe;

public class CASandCAEwithNegExpected {

    public volatile int f_int = -1;

    public volatile long f_long = -1;

    public volatile byte f_byte = -1;

    public volatile short f_short = -1;

    public static Unsafe unsafe = Unsafe.getUnsafe();

    public static Field f_int_field;

    public static Field f_long_field;

    public static Field f_byte_field;

    public static Field f_short_field;

    public static long f_int_off;

    public static long f_long_off;

    public static long f_byte_off;

    public static long f_short_off;

    static {

        try {

            f_int_field = CASandCAEwithNegExpected.class.getField("f_int");

            f_long_field = CASandCAEwithNegExpected.class.getField("f_long");

            f_byte_field = CASandCAEwithNegExpected.class.getField("f_byte");

            f_short_field = CASandCAEwithNegExpected.class.getField("f_short");

            f_int_off = unsafe.objectFieldOffset(f_int_field);

            f_long_off = unsafe.objectFieldOffset(f_long_field);

            f_byte_off = unsafe.objectFieldOffset(f_byte_field);

            f_short_off = unsafe.objectFieldOffset(f_short_field);

        } catch (Exception e) {

            System.out.println("reflection failed " + e);

            e.printStackTrace();

        }

    }

    static public void main(String[] args) {

        CASandCAEwithNegExpected t = new CASandCAEwithNegExpected();

        for (int i = 0; i < 20_000; i++) {

            t.test();

        }

    }

    // check proper handling of sign extension of expected value in comparison

    void test() {

        f_int = -1;

        f_long = -1;

        f_byte = -1;

        f_short = -1;

        unsafe.compareAndSetInt(this, f_int_off, -1, 42);

        if (f_int != 42) {

            throw new RuntimeException("CAS failed");

        }

        unsafe.compareAndSetLong(this, f_long_off, -1, 42);

        if (f_long != 42) {

            throw new RuntimeException("CAS failed");

        }

        unsafe.compareAndSetByte(this, f_byte_off, (byte)-1, (byte)42);

        if (f_byte != 42) {

            throw new RuntimeException("CAS failed");

        }

        unsafe.compareAndSetShort(this, f_short_off, (short)-1, (short)42);

        if (f_short != 42) {

            throw new RuntimeException("CAS failed");

        }

        f_int = -1;

        f_long = -1;

        f_byte = -1;

        f_short = -1;

        unsafe.compareAndExchangeInt(this, f_int_off, -1, 42);

        if (f_int != 42) {

            throw new RuntimeException("CAE failed");

        }

        unsafe.compareAndExchangeLong(this, f_long_off, -1, 42);

        if (f_long != 42) {

            throw new RuntimeException("CAE failed");

        }

        unsafe.compareAndExchangeByte(this, f_byte_off, (byte)-1, (byte)42);

        if (f_byte != 42) {

            throw new RuntimeException("CAE failed");

        }

        unsafe.compareAndExchangeShort(this, f_short_off, (short)-1, (short)42);

        if (f_short != 42) {

            throw new RuntimeException("CAE failed");

        }

        f_int = -1;

        f_long = -1;

        f_byte = -1;

        f_short = -1;

        if (unsafe.weakCompareAndSetInt(this, f_int_off, -1, 42) && f_int != 42) {

            throw new RuntimeException("CAS failed");

        }

        if (unsafe.weakCompareAndSetLong(this, f_long_off, -1, 42) && f_long != 42) {

            throw new RuntimeException("CAS failed");

        }

        if (unsafe.weakCompareAndSetByte(this, f_byte_off, (byte)-1, (byte)42) && f_byte != 42) {

            throw new RuntimeException("CAS failed");

        }

        if (unsafe.weakCompareAndSetShort(this, f_short_off, (short)-1, (short)42) && f_short != 42) {

            throw new RuntimeException("CAS failed");

        }

    }

}