/*

 * Copyright (c) 2013, 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 org.graalvm.compiler.hotspot.aarch64;

import static jdk.vm.ci.aarch64.AArch64.sp;

import static jdk.vm.ci.common.InitTimer.timer;

import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;

import org.graalvm.compiler.bytecode.BytecodeProvider;

import org.graalvm.compiler.core.aarch64.AArch64AddressLowering;

import org.graalvm.compiler.core.aarch64.AArch64SuitesProvider;

import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;

import org.graalvm.compiler.hotspot.HotSpotBackend;

import org.graalvm.compiler.hotspot.HotSpotBackendFactory;

import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;

import org.graalvm.compiler.hotspot.HotSpotReplacementsImpl;

import org.graalvm.compiler.hotspot.meta.HotSpotConstantFieldProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotGraalConstantFieldProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotGraphBuilderPlugins;

import org.graalvm.compiler.hotspot.meta.HotSpotHostForeignCallsProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotLoweringProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotProviders;

import org.graalvm.compiler.hotspot.meta.HotSpotRegisters;

import org.graalvm.compiler.hotspot.meta.HotSpotRegistersProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotSnippetReflectionProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotStampProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotSuitesProvider;

import org.graalvm.compiler.hotspot.nodes.HotSpotNodeCostProvider;

import org.graalvm.compiler.hotspot.word.HotSpotWordTypes;

import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration.Plugins;

import org.graalvm.compiler.nodes.spi.NodeCostProvider;

import org.graalvm.compiler.phases.tiers.CompilerConfiguration;

import org.graalvm.compiler.phases.util.Providers;

import org.graalvm.compiler.replacements.aarch64.AArch64GraphBuilderPlugins;

import org.graalvm.compiler.replacements.classfile.ClassfileBytecodeProvider;

import org.graalvm.compiler.serviceprovider.ServiceProvider;

import org.graalvm.compiler.word.WordTypes;

import jdk.vm.ci.aarch64.AArch64;

import jdk.vm.ci.code.Architecture;

import jdk.vm.ci.code.RegisterArray;

import jdk.vm.ci.code.RegisterConfig;

import jdk.vm.ci.code.TargetDescription;

import jdk.vm.ci.common.InitTimer;

import jdk.vm.ci.hotspot.HotSpotCodeCacheProvider;

import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider;

import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider;

import jdk.vm.ci.hotspot.HotSpotMetaAccessProvider;

import jdk.vm.ci.hotspot.aarch64.AArch64HotSpotRegisterConfig;

import jdk.vm.ci.meta.Value;

import jdk.vm.ci.runtime.JVMCIBackend;

@ServiceProvider(HotSpotBackendFactory.class)

public class AArch64HotSpotBackendFactory implements HotSpotBackendFactory {

    @Override

    public String getName() {

        return "core";

    }

    @Override

    public Class<? extends Architecture> getArchitecture() {

        return AArch64.class;

    }

    @Override

    @SuppressWarnings("try")

    public HotSpotBackend createBackend(HotSpotGraalRuntimeProvider graalRuntime, CompilerConfiguration compilerConfiguration, HotSpotJVMCIRuntimeProvider jvmciRuntime, HotSpotBackend host) {

        assert host == null;

        JVMCIBackend jvmci = jvmciRuntime.getHostJVMCIBackend();

        GraalHotSpotVMConfig config = graalRuntime.getVMConfig();

        HotSpotProviders providers;

        HotSpotRegistersProvider registers;

        HotSpotCodeCacheProvider codeCache = (HotSpotCodeCacheProvider) jvmci.getCodeCache();

        TargetDescription target = codeCache.getTarget();

        HotSpotHostForeignCallsProvider foreignCalls;

        Value[] nativeABICallerSaveRegisters;

        HotSpotMetaAccessProvider metaAccess = (HotSpotMetaAccessProvider) jvmci.getMetaAccess();

        HotSpotConstantReflectionProvider constantReflection = (HotSpotConstantReflectionProvider) jvmci.getConstantReflection();

        HotSpotConstantFieldProvider constantFieldProvider = new HotSpotGraalConstantFieldProvider(config, metaAccess);

        HotSpotLoweringProvider lowerer;

        HotSpotSnippetReflectionProvider snippetReflection;

        HotSpotReplacementsImpl replacements;

        HotSpotSuitesProvider suites;

        HotSpotWordTypes wordTypes;

        Plugins plugins;

        NodeCostProvider nodeCostProvider;

        BytecodeProvider bytecodeProvider;

        try (InitTimer t = timer("create providers")) {

            try (InitTimer rt = timer("create HotSpotRegisters provider")) {

                registers = createRegisters();

            }

            try (InitTimer rt = timer("create NativeABICallerSaveRegisters")) {

                nativeABICallerSaveRegisters = createNativeABICallerSaveRegisters(config, codeCache.getRegisterConfig());

            }

            try (InitTimer rt = timer("create WordTypes")) {

                wordTypes = new HotSpotWordTypes(metaAccess, target.wordJavaKind);

            }

            try (InitTimer rt = timer("create ForeignCalls provider")) {

                foreignCalls = createForeignCalls(jvmciRuntime, graalRuntime, metaAccess, codeCache, wordTypes, nativeABICallerSaveRegisters);

            }

            try (InitTimer rt = timer("create Lowerer provider")) {

                lowerer = createLowerer(graalRuntime, metaAccess, foreignCalls, registers, constantReflection, target);

            }

            try (InitTimer rt = timer("create NodeCost provider")) {

                nodeCostProvider = createNodeCostProvider();

            }

            HotSpotStampProvider stampProvider = new HotSpotStampProvider();

            Providers p = new Providers(metaAccess, codeCache, constantReflection, constantFieldProvider, foreignCalls, lowerer, null, stampProvider, nodeCostProvider);

            try (InitTimer rt = timer("create SnippetReflection provider")) {

                snippetReflection = createSnippetReflection(graalRuntime, constantReflection, wordTypes);

            }

            try (InitTimer rt = timer("create Bytecode provider")) {

                bytecodeProvider = new ClassfileBytecodeProvider(metaAccess, snippetReflection);

            }

            try (InitTimer rt = timer("create Replacements provider")) {

                replacements = createReplacements(p, snippetReflection, bytecodeProvider);

            }

            try (InitTimer rt = timer("create GraphBuilderPhase plugins")) {

                plugins = createGraphBuilderPlugins(config, constantReflection, foreignCalls, metaAccess, snippetReflection, replacements, wordTypes, stampProvider);

                replacements.setGraphBuilderPlugins(plugins);

            }

            try (InitTimer rt = timer("create Suites provider")) {

                suites = createSuites(config, graalRuntime, compilerConfiguration, plugins);

            }

            providers = new HotSpotProviders(metaAccess, codeCache, constantReflection, constantFieldProvider, foreignCalls, lowerer, replacements, nodeCostProvider, suites, registers,

                            snippetReflection, wordTypes,

                            plugins);

        }

        try (InitTimer rt = timer("instantiate backend")) {

            return createBackend(config, graalRuntime, providers);

        }

    }

    protected Plugins createGraphBuilderPlugins(GraalHotSpotVMConfig config, HotSpotConstantReflectionProvider constantReflection, HotSpotHostForeignCallsProvider foreignCalls,

                    HotSpotMetaAccessProvider metaAccess, HotSpotSnippetReflectionProvider snippetReflection, HotSpotReplacementsImpl replacements, HotSpotWordTypes wordTypes,

                    HotSpotStampProvider stampProvider) {

        Plugins plugins = HotSpotGraphBuilderPlugins.create(config, wordTypes, metaAccess, constantReflection, snippetReflection, foreignCalls, stampProvider, replacements);

        AArch64GraphBuilderPlugins.register(plugins, foreignCalls, replacements.getReplacementBytecodeProvider());

        return plugins;

    }

    protected AArch64HotSpotBackend createBackend(GraalHotSpotVMConfig config, HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) {

        return new AArch64HotSpotBackend(config, runtime, providers);

    }

    protected HotSpotRegistersProvider createRegisters() {

        return new HotSpotRegisters(AArch64HotSpotRegisterConfig.threadRegister, AArch64HotSpotRegisterConfig.heapBaseRegister, sp);

    }

    protected HotSpotReplacementsImpl createReplacements(Providers p, SnippetReflectionProvider snippetReflection, BytecodeProvider bytecodeProvider) {

        return new HotSpotReplacementsImpl(p, snippetReflection, bytecodeProvider, p.getCodeCache().getTarget());

    }

    protected HotSpotHostForeignCallsProvider createForeignCalls(HotSpotJVMCIRuntimeProvider jvmciRuntime, HotSpotGraalRuntimeProvider runtime, HotSpotMetaAccessProvider metaAccess,

                    HotSpotCodeCacheProvider codeCache, WordTypes wordTypes, Value[] nativeABICallerSaveRegisters) {

        return new AArch64HotSpotForeignCallsProvider(jvmciRuntime, runtime, metaAccess, codeCache, wordTypes, nativeABICallerSaveRegisters);

    }

    protected HotSpotSuitesProvider createSuites(GraalHotSpotVMConfig config, HotSpotGraalRuntimeProvider runtime, CompilerConfiguration compilerConfiguration, Plugins plugins) {

        return new HotSpotSuitesProvider(new AArch64SuitesProvider(compilerConfiguration, plugins), config, runtime, new AArch64AddressLowering());

    }

    protected HotSpotSnippetReflectionProvider createSnippetReflection(HotSpotGraalRuntimeProvider runtime, HotSpotConstantReflectionProvider constantReflection, WordTypes wordTypes) {

        return new HotSpotSnippetReflectionProvider(runtime, constantReflection, wordTypes);

    }

    protected HotSpotLoweringProvider createLowerer(HotSpotGraalRuntimeProvider runtime, HotSpotMetaAccessProvider metaAccess, HotSpotForeignCallsProvider foreignCalls,

                    HotSpotRegistersProvider registers, HotSpotConstantReflectionProvider constantReflection, TargetDescription target) {

        return new AArch64HotSpotLoweringProvider(runtime, metaAccess, foreignCalls, registers, constantReflection, target);

    }

    protected HotSpotNodeCostProvider createNodeCostProvider() {

        return new AArchHotSpotNodeCostProvider();

    }

    protected static Value[] createNativeABICallerSaveRegisters(@SuppressWarnings("unused") GraalHotSpotVMConfig config, RegisterConfig regConfig) {

        AArch64HotSpotRegisterConfig conf = (AArch64HotSpotRegisterConfig) regConfig;

        RegisterArray callerSavedRegisters = conf.getCallerSaveRegisters();

        int size = callerSavedRegisters.size();

        Value[] nativeABICallerSaveRegisters = new Value[size];

        for (int i = 0; i < size; i++) {

            nativeABICallerSaveRegisters[i] = callerSavedRegisters.get(i).asValue();

        }

        return nativeABICallerSaveRegisters;

    }

    @Override

    public String toString() {

        return "AArch64";

    }

}