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 * 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

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package org.graalvm.compiler.hotspot.sparc;

import java.util.HashSet;

import java.util.Set;

import org.graalvm.compiler.bytecode.BytecodeProvider;

import org.graalvm.compiler.core.sparc.SPARCAddressLowering;

import org.graalvm.compiler.core.sparc.SPARCSuitesCreator;

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.AddressLoweringHotSpotSuitesProvider;

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.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.word.HotSpotWordTypes;

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

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

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

import org.graalvm.compiler.phases.common.AddressLoweringPhase;

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

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

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

import org.graalvm.compiler.replacements.sparc.SPARCGraphBuilderPlugins;

import org.graalvm.compiler.serviceprovider.ServiceProvider;

import jdk.vm.ci.code.Architecture;

import jdk.vm.ci.code.Register;

import jdk.vm.ci.code.RegisterConfig;

import jdk.vm.ci.code.TargetDescription;

import jdk.vm.ci.hotspot.HotSpotCodeCacheProvider;

import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider;

import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;

import jdk.vm.ci.hotspot.HotSpotMetaAccessProvider;

import jdk.vm.ci.meta.Value;

import jdk.vm.ci.runtime.JVMCIBackend;

import jdk.vm.ci.sparc.SPARC;

@ServiceProvider(HotSpotBackendFactory.class)

public class SPARCHotSpotBackendFactory implements HotSpotBackendFactory {

    @Override

    public String getName() {

        return "community";

    }

    @Override

    public Class<? extends Architecture> getArchitecture() {

        return SPARC.class;

    }

    @Override

    public HotSpotBackend createBackend(HotSpotGraalRuntimeProvider runtime, CompilerConfiguration compilerConfiguration, HotSpotJVMCIRuntime jvmciRuntime, HotSpotBackend host) {

        assert host == null;

        GraalHotSpotVMConfig config = runtime.getVMConfig();

        JVMCIBackend jvmci = jvmciRuntime.getHostJVMCIBackend();

        HotSpotRegistersProvider registers = createRegisters();

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

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

        TargetDescription target = codeCache.getTarget();

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

        HotSpotConstantFieldProvider constantFieldProvider = new HotSpotGraalConstantFieldProvider(config, metaAccess);

        Value[] nativeABICallerSaveRegisters = createNativeABICallerSaveRegisters(config, codeCache.getRegisterConfig());

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

        HotSpotForeignCallsProvider foreignCalls = new SPARCHotSpotForeignCallsProvider(jvmciRuntime, runtime, metaAccess, codeCache, wordTypes, nativeABICallerSaveRegisters);

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

        HotSpotStampProvider stampProvider = new HotSpotStampProvider();

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

        HotSpotSnippetReflectionProvider snippetReflection = new HotSpotSnippetReflectionProvider(runtime, constantReflection, wordTypes);

        BytecodeProvider bytecodeProvider = new ClassfileBytecodeProvider(metaAccess, snippetReflection);

        replacements.setGraphBuilderPlugins(plugins);

        HotSpotSuitesProvider suites = createSuites(config, runtime, compilerConfiguration, plugins, replacements);

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

                        snippetReflection,

                        wordTypes, plugins);

        return createBackend(config, runtime, providers);

    }

    protected Plugins createGraphBuilderPlugins(CompilerConfiguration compilerConfiguration, GraalHotSpotVMConfig config, HotSpotMetaAccessProvider metaAccess,

                    HotSpotConstantReflectionProvider constantReflection, HotSpotForeignCallsProvider foreignCalls,

        SPARCGraphBuilderPlugins.register(plugins, replacements.getDefaultReplacementBytecodeProvider(), false);

        return plugins;

    }

    /**

     * @param replacements

     */

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

                    Replacements replacements) {

        return new AddressLoweringHotSpotSuitesProvider(new SPARCSuitesCreator(compilerConfiguration, plugins), config, runtime, new AddressLoweringPhase(new SPARCAddressLowering()));

    }

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

        return new SPARCHotSpotBackend(config, runtime, providers);

    }

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

                    HotSpotRegistersProvider registers, HotSpotConstantReflectionProvider constantReflection, TargetDescription target) {

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

    }

    protected HotSpotRegistersProvider createRegisters() {

        return new HotSpotRegisters(SPARC.g2, SPARC.g6, SPARC.sp);

    }

    @SuppressWarnings("unused")

    private static Value[] createNativeABICallerSaveRegisters(GraalHotSpotVMConfig config, RegisterConfig regConfig) {

        Set<Register> callerSavedRegisters = new HashSet<>();

        SPARC.fpusRegisters.addTo(callerSavedRegisters);

        SPARC.fpudRegisters.addTo(callerSavedRegisters);

        callerSavedRegisters.add(SPARC.g1);

        callerSavedRegisters.add(SPARC.g4);

        callerSavedRegisters.add(SPARC.g5);

        Value[] nativeABICallerSaveRegisters = new Value[callerSavedRegisters.size()];

        int i = 0;

        for (Register reg : callerSavedRegisters) {

            nativeABICallerSaveRegisters[i] = reg.asValue();

            i++;

        }

        return nativeABICallerSaveRegisters;

    }

    @Override

    public String toString() {

        return "SPARC";

    }

}