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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

 * 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.

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

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.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

        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());

        }

    }

    @Override

    public Value[] getNativeABICallerSaveRegisters() {

        return nativeABICallerSaveRegisters;

    }

}