/*

 * 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.

 */

package compiler.jvmci.code;

import java.lang.reflect.Method;

import jdk.vm.ci.amd64.AMD64;

import jdk.vm.ci.code.Architecture;

import jdk.vm.ci.code.CodeCacheProvider;

import jdk.vm.ci.code.InstalledCode;

import jdk.vm.ci.code.TargetDescription;

import jdk.vm.ci.hotspot.HotSpotCompiledCode;

import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;

import jdk.vm.ci.meta.ConstantReflectionProvider;

import jdk.vm.ci.meta.MetaAccessProvider;

import jdk.vm.ci.runtime.JVMCI;

import jdk.vm.ci.runtime.JVMCIBackend;

import jdk.vm.ci.sparc.SPARC;

import org.junit.Assert;

import compiler.jvmci.code.amd64.AMD64TestAssembler;

import compiler.jvmci.code.sparc.SPARCTestAssembler;

/**

 * Base class for code installation tests.

 */

public class CodeInstallationTest {

    protected final MetaAccessProvider metaAccess;

    protected final CodeCacheProvider codeCache;

    protected final TargetDescription target;

    protected final ConstantReflectionProvider constantReflection;

    public CodeInstallationTest() {

        JVMCIBackend backend = JVMCI.getRuntime().getHostJVMCIBackend();

        metaAccess = backend.getMetaAccess();

        codeCache = backend.getCodeCache();

        target = backend.getTarget();

        constantReflection = backend.getConstantReflection();

    }

    protected interface TestCompiler {

        void compile(TestAssembler asm);

    }

    private TestAssembler createAssembler() {

        Architecture arch = codeCache.getTarget().arch;

        if (arch instanceof AMD64) {

            return new AMD64TestAssembler(codeCache);

        } else if (arch instanceof SPARC) {

            return new SPARCTestAssembler(codeCache);

        } else {

            Assert.fail("unsupported architecture");

            return null;

        }

    }

    protected Method getMethod(String name, Class<?>... args) {

        try {

            return getClass().getMethod(name, args);

        } catch (NoSuchMethodException e) {

            Assert.fail("method not found");

            return null;

        }

    }

    protected void test(TestCompiler compiler, Method method, Object... args) {

        HotSpotResolvedJavaMethod resolvedMethod = (HotSpotResolvedJavaMethod) metaAccess.lookupJavaMethod(method);

        TestAssembler asm = createAssembler();

        asm.emitPrologue();

        compiler.compile(asm);

        HotSpotCompiledCode code = asm.finish(resolvedMethod);

        InstalledCode installed = codeCache.addCode(resolvedMethod, code, null, null);

        try {

            Object expected = method.invoke(null, args);

            Object actual = installed.executeVarargs(args);

            Assert.assertEquals(expected, actual);

        } catch (Exception e) {

            e.printStackTrace();

            Assert.fail(e.toString());

        }

    }

}