/*

 * Copyright (c) 2015, 2016, 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.

 */

/**

 * @test

 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"

 * @library /

 * @modules jdk.vm.ci/jdk.vm.ci.hotspot

 *          jdk.vm.ci/jdk.vm.ci.meta

 *          jdk.vm.ci/jdk.vm.ci.code

 *          jdk.vm.ci/jdk.vm.ci.code.site

 *          jdk.vm.ci/jdk.vm.ci.runtime

 *          jdk.vm.ci/jdk.vm.ci.amd64

 *          jdk.vm.ci/jdk.vm.ci.sparc

 * @compile CodeInstallationTest.java DebugInfoTest.java TestAssembler.java amd64/AMD64TestAssembler.java sparc/SPARCTestAssembler.java

 * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.vm.ci.code.test.DataPatchTest

 */

package jdk.vm.ci.code.test;

import jdk.vm.ci.code.Register;

import jdk.vm.ci.code.site.DataSectionReference;

import jdk.vm.ci.hotspot.HotSpotConstant;

import jdk.vm.ci.hotspot.HotSpotMetaAccessProvider;

import jdk.vm.ci.hotspot.HotSpotVMConfig;

import jdk.vm.ci.meta.ResolvedJavaType;

import org.junit.Assume;

import org.junit.Test;

/**

 * Test code installation with data patches.

 */

public class DataPatchTest extends CodeInstallationTest {

    public static Class<?> getConstClass() {

        return DataPatchTest.class;

    }

    private void test(TestCompiler compiler) {

        test(compiler, getMethod("getConstClass"));

    }

    @Test

    public void testInlineObject() {

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant c = (HotSpotConstant) constantReflection.asJavaClass(type);

            Register ret = asm.emitLoadPointer(c);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testInlineNarrowObject() {

        Assume.assumeTrue(HotSpotVMConfig.config().useCompressedOops);

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant c = (HotSpotConstant) constantReflection.asJavaClass(type);

            Register compressed = asm.emitLoadPointer((HotSpotConstant) c.compress());

            Register ret = asm.emitUncompressPointer(compressed, HotSpotVMConfig.config().narrowOopBase, HotSpotVMConfig.config().narrowOopShift);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testDataSectionReference() {

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant c = (HotSpotConstant) constantReflection.asJavaClass(type);

            DataSectionReference ref = asm.emitDataItem(c);

            Register ret = asm.emitLoadPointer(ref);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testNarrowDataSectionReference() {

        Assume.assumeTrue(HotSpotVMConfig.config().useCompressedOops);

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant c = (HotSpotConstant) constantReflection.asJavaClass(type);

            HotSpotConstant cCompressed = (HotSpotConstant) c.compress();

            DataSectionReference ref = asm.emitDataItem(cCompressed);

            Register compressed = asm.emitLoadNarrowPointer(ref);

            Register ret = asm.emitUncompressPointer(compressed, HotSpotVMConfig.config().narrowOopBase, HotSpotVMConfig.config().narrowOopShift);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testInlineMetadata() {

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            Register klass = asm.emitLoadPointer((HotSpotConstant) constantReflection.asObjectHub(type));

            Register ret = asm.emitLoadPointer(klass, HotSpotVMConfig.config().classMirrorOffset);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testInlineNarrowMetadata() {

        Assume.assumeTrue(HotSpotVMConfig.config().useCompressedClassPointers);

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant hub = (HotSpotConstant) constantReflection.asObjectHub(type);

            Register narrowKlass = asm.emitLoadPointer((HotSpotConstant) hub.compress());

            Register klass = asm.emitUncompressPointer(narrowKlass, HotSpotVMConfig.config().narrowKlassBase, HotSpotVMConfig.config().narrowKlassShift);

            Register ret = asm.emitLoadPointer(klass, HotSpotVMConfig.config().classMirrorOffset);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testMetadataInDataSection() {

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant hub = (HotSpotConstant) constantReflection.asObjectHub(type);

            DataSectionReference ref = asm.emitDataItem(hub);

            Register klass = asm.emitLoadPointer(ref);

            Register ret = asm.emitLoadPointer(klass, HotSpotVMConfig.config().classMirrorOffset);

            asm.emitPointerRet(ret);

        });

    }

    @Test

    public void testNarrowMetadataInDataSection() {

        Assume.assumeTrue(HotSpotVMConfig.config().useCompressedClassPointers);

        test(asm -> {

            ResolvedJavaType type = metaAccess.lookupJavaType(getConstClass());

            HotSpotConstant hub = (HotSpotConstant) constantReflection.asObjectHub(type);

            HotSpotConstant narrowHub = (HotSpotConstant) hub.compress();

            DataSectionReference ref = asm.emitDataItem(narrowHub);

            Register narrowKlass = asm.emitLoadNarrowPointer(ref);

            Register klass = asm.emitUncompressPointer(narrowKlass, HotSpotVMConfig.config().narrowKlassBase, HotSpotVMConfig.config().narrowKlassShift);

            Register ret = asm.emitLoadPointer(klass, HotSpotVMConfig.config().classMirrorOffset);

            asm.emitPointerRet(ret);

        });

    }

}