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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * You should have received a copy of the GNU General Public License version

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package org.graalvm.compiler.hotspot.aarch64;

import static jdk.vm.ci.aarch64.AArch64.r0;

import static jdk.vm.ci.aarch64.AArch64.r3;

import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.NativeCall;

import static jdk.vm.ci.meta.Value.ILLEGAL;

import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.JUMP_ADDRESS;

import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Reexecutability.NOT_REEXECUTABLE;

import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Transition.LEAF;

import static org.graalvm.compiler.hotspot.replacements.CRC32CSubstitutions.UPDATE_BYTES_CRC32C;

import static org.graalvm.compiler.hotspot.replacements.CRC32Substitutions.UPDATE_BYTES_CRC32;

import static jdk.internal.vm.compiler.word.LocationIdentity.any;

import org.graalvm.compiler.core.common.LIRKind;

import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;

import org.graalvm.compiler.hotspot.HotSpotBackend;

import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkageImpl;

import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;

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

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

import org.graalvm.compiler.options.OptionValues;

import org.graalvm.compiler.word.WordTypes;

import jdk.vm.ci.code.CallingConvention;

import jdk.vm.ci.code.CodeCacheProvider;

import jdk.vm.ci.code.RegisterValue;

import jdk.vm.ci.code.TargetDescription;

import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;

import jdk.vm.ci.meta.MetaAccessProvider;

import jdk.vm.ci.meta.PlatformKind;

import jdk.vm.ci.meta.Value;

public class AArch64HotSpotForeignCallsProvider extends HotSpotHostForeignCallsProvider {

    private final Value[] nativeABICallerSaveRegisters;

    public AArch64HotSpotForeignCallsProvider(HotSpotJVMCIRuntime jvmciRuntime, HotSpotGraalRuntimeProvider runtime, MetaAccessProvider metaAccess, CodeCacheProvider codeCache,

                    WordTypes wordTypes, Value[] nativeABICallerSaveRegisters) {

        super(jvmciRuntime, runtime, metaAccess, codeCache, wordTypes);

        this.nativeABICallerSaveRegisters = nativeABICallerSaveRegisters;

    }

    @Override

    public void initialize(HotSpotProviders providers, OptionValues options) {

        GraalHotSpotVMConfig config = runtime.getVMConfig();

        TargetDescription target = providers.getCodeCache().getTarget();

        PlatformKind word = target.arch.getWordKind();

        // The calling convention for the exception handler stub is (only?) defined in

        // TemplateInterpreterGenerator::generate_throw_exception()

        RegisterValue exception = r0.asValue(LIRKind.reference(word));

        RegisterValue exceptionPc = r3.asValue(LIRKind.value(word));

        CallingConvention exceptionCc = new CallingConvention(0, ILLEGAL, exception, exceptionPc);

        // These stubs do callee saving

        if (config.useCRC32Intrinsics) {

        }

        if (config.useCRC32CIntrinsics) {

        }

        super.initialize(providers, options);

    }

    @Override

    public Value[] getNativeABICallerSaveRegisters() {

        return nativeABICallerSaveRegisters;

    }

}