/*

 * 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.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.RegisterEffect.PRESERVES_REGISTERS;

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

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

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

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.HotSpotJVMCIRuntimeProvider;

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(HotSpotJVMCIRuntimeProvider 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);

        register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER, 0L, PRESERVES_REGISTERS, LEAF, exceptionCc, null, NOT_REEXECUTABLE, any()));

        register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER_IN_CALLER, JUMP_ADDRESS, PRESERVES_REGISTERS, LEAF, exceptionCc, null, NOT_REEXECUTABLE, any()));

        // These stubs do callee saving

        if (config.useCRC32Intrinsics) {

            registerForeignCall(UPDATE_BYTES_CRC32, config.updateBytesCRC32Stub, NativeCall, PRESERVES_REGISTERS, LEAF, NOT_REEXECUTABLE, any());

        }

        if (config.useCRC32CIntrinsics) {

            registerForeignCall(UPDATE_BYTES_CRC32C, config.updateBytesCRC32C, NativeCall, PRESERVES_REGISTERS, LEAF, NOT_REEXECUTABLE, any());

        }

        super.initialize(providers, options);

    }

    @Override

    public Value[] getNativeABICallerSaveRegisters() {

        return nativeABICallerSaveRegisters;

    }

}