// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Runtime.CompilerServices;
using System.Runtime.Intrinsics;

namespace System.Runtime.Intrinsics.X86
{
    /// <summary>
    /// This class provides access to Intel BMI2 hardware instructions via intrinsics
    /// </summary>
    [CLSCompliant(false)]
    public abstract class Bmi2
    {
        internal Bmi2() { }

        public static bool IsSupported { [Intrinsic] get { return false; } }

        public abstract class X64
        {
            internal X64() { }

            public static bool IsSupported { [Intrinsic] get { return false; } }

            /// <summary>
            /// unsigned __int64 _bzhi_u64 (unsigned __int64 a, unsigned int index)
            ///   BZHI r64a, reg/m32, r64b
            /// This intrinisc is only available on 64-bit processes
            /// </summary>
            public static ulong ZeroHighBits(ulong value, ulong index) { throw new PlatformNotSupportedException(); }

            /// <summary>
            /// unsigned __int64 _mulx_u64 (unsigned __int64 a, unsigned __int64 b, unsigned __int64* hi)
            ///   MULX r64a, r64b, reg/m64
            /// The above native signature does not directly correspond to the managed signature.
            /// This intrinisc is only available on 64-bit processes
            /// </summary>
            public static ulong MultiplyNoFlags(ulong left, ulong right) { throw new PlatformNotSupportedException(); }

            /// <summary>
            /// unsigned __int64 _mulx_u64 (unsigned __int64 a, unsigned __int64 b, unsigned __int64* hi)
            ///   MULX r64a, r64b, reg/m64
            /// The above native signature does not directly correspond to the managed signature.
            /// This intrinisc is only available on 64-bit processes
            /// </summary>
            public static unsafe ulong MultiplyNoFlags(ulong left, ulong right, ulong* low) { throw new PlatformNotSupportedException(); }

            /// <summary>
            /// unsigned __int64 _pdep_u64 (unsigned __int64 a, unsigned __int64 mask)
            ///   PDEP r64a, r64b, reg/m64
            /// This intrinisc is only available on 64-bit processes
            /// </summary>
            public static ulong ParallelBitDeposit(ulong value, ulong mask) { throw new PlatformNotSupportedException(); }

            /// <summary>
            /// unsigned __int64 _pext_u64 (unsigned __int64 a, unsigned __int64 mask)
            ///   PEXT r64a, r64b, reg/m64
            /// This intrinisc is only available on 64-bit processes
            /// </summary>
            public static ulong ParallelBitExtract(ulong value, ulong mask) { throw new PlatformNotSupportedException(); }
        }

        /// <summary>
        /// unsigned int _bzhi_u32 (unsigned int a, unsigned int index)
        ///   BZHI r32a, reg/m32, r32b
        /// </summary>
        public static uint ZeroHighBits(uint value, uint index) { throw new PlatformNotSupportedException(); }

        /// <summary>
        /// unsigned int _mulx_u32 (unsigned int a, unsigned int b, unsigned int* hi)
        ///   MULX r32a, r32b, reg/m32
        /// The above native signature does not directly correspond to the managed signature.
        /// </summary>
        public static uint MultiplyNoFlags(uint left, uint right) { throw new PlatformNotSupportedException(); }

        /// <summary>
        /// unsigned int _mulx_u32 (unsigned int a, unsigned int b, unsigned int* hi)
        ///   MULX r32a, r32b, reg/m32
        /// The above native signature does not directly correspond to the managed signature.
        /// </summary>
        public static unsafe uint MultiplyNoFlags(uint left, uint right, uint* low) { throw new PlatformNotSupportedException(); }

        /// <summary>
        /// unsigned int _pdep_u32 (unsigned int a, unsigned int mask)
        ///   PDEP r32a, r32b, reg/m32
        /// </summary>
        public static uint ParallelBitDeposit(uint value, uint mask) { throw new PlatformNotSupportedException(); }

        /// <summary>
        /// unsigned int _pext_u32 (unsigned int a, unsigned int mask)
        ///   PEXT r32a, r32b, reg/m32
        /// </summary>
        public static uint ParallelBitExtract(uint value, uint mask) { throw new PlatformNotSupportedException(); }
    }
}