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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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package com.oracle.svm.hosted;

import java.lang.reflect.Method;
import java.util.EnumSet;

import org.graalvm.compiler.core.riscv64.RISCV64ReflectionUtil;
import org.graalvm.nativeimage.ImageSingletons;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.Platforms;

import com.oracle.svm.core.SubstrateTargetDescription;
import com.oracle.svm.core.feature.AutomaticallyRegisteredFeature;
import com.oracle.svm.core.feature.InternalFeature;
import com.oracle.svm.core.riscv64.RISCV64CPUFeatureAccess;
import com.oracle.svm.core.riscv64.RISCV64LibCHelper;
import com.oracle.svm.util.ReflectionUtil;

import jdk.vm.ci.code.Architecture;

@AutomaticallyRegisteredFeature
@Platforms(Platform.RISCV64.class)
class RISCV64CPUFeatureAccessFeature extends CPUFeatureAccessFeatureBase implements InternalFeature {

    @Override
    public void beforeAnalysis(BeforeAnalysisAccess arg) {
        var targetDescription = ImageSingletons.lookup(SubstrateTargetDescription.class);
        Method getFeatures = ReflectionUtil.lookupMethod(Architecture.class, "getFeatures");
        var buildtimeCPUFeatures = RISCV64ReflectionUtil.invokeMethod(getFeatures, targetDescription.arch);
        Class<?> riscv64CPUFeature = RISCV64ReflectionUtil.lookupClass(false, RISCV64ReflectionUtil.featureClass);
        Method values = ReflectionUtil.lookupMethod(riscv64CPUFeature, "values");
        Method initializeCPUFeatureAccessData = ReflectionUtil.lookupMethod(CPUFeatureAccessFeatureBase.class,
                        "initializeCPUFeatureAccessData", Enum[].class, EnumSet.class, Class.class, FeatureImpl.BeforeAnalysisAccessImpl.class);
        RISCV64ReflectionUtil.invokeMethod(initializeCPUFeatureAccessData, this, RISCV64ReflectionUtil.invokeMethod(values, null), buildtimeCPUFeatures, RISCV64LibCHelper.CPUFeatures.class, arg);
    }

    @Override
    protected RISCV64CPUFeatureAccess createCPUFeatureAccessSingleton(EnumSet<?> buildtimeCPUFeatures, int[] offsets, byte[] errorMessageBytes, byte[] buildtimeFeatureMaskBytes) {
        return new RISCV64CPUFeatureAccess(buildtimeCPUFeatures, offsets, errorMessageBytes, buildtimeFeatureMaskBytes);
    }
}
