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<Target Name="GenerateVirtuaDisk" AfterTargets="Publish">
    <PropertyGroup>
      <VHD>$(MSBuildProjectDirectory)\$(NativeOutputPath)seesharpsnake.vhdx</VHD>
      <CreatePartitionCommand>
        create vdisk file=$(VHD) maximum=40
        select vdisk file=$(VHD)
        attach vdisk
        convert gpt
        create partition efi
        format quick fs=fat32 label="System"

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<ItemGroup>
  <LinkerArg Include="/subsystem:EFI_APPLICATION /entry:EfiMain" />
</ItemGroup>

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<PropertyGroup>
  <NoStdLib>true</NoStdLib>
  <NoConfig>true</NoConfig>
  <RuntimeMetadataVersion>v4.0.30319</RuntimeMetadataVersion>
  <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
  <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
  <IlcSystemModule>SeeSharpSnake</IlcSystemModule>
</PropertyGroup>

<Target Name="CustomizeReferences" BeforeTargets="BeforeCompile" AfterTargets="FindReferenceAssembliesForReferences">

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namespace System.Runtime.InteropServices
{
    public class UnmanagedType { }
}

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[System.Runtime.InteropServices.McgIntrinsicsAttribute]
internal class RawCalliHelper
{
    public static unsafe ulong StdCall<T, U, W, X>(IntPtr pfn, T* arg1, U* arg2, W* arg3, X* arg4) where T : unmanaged where U : unmanaged where W : unmanaged where X : unmanaged
    {
        // This will be filled in by an IL transform
        return 0;
    }
    public static unsafe ulong StdCall<T, U, W, X>(IntPtr pfn, T arg1, U* arg2, W* arg3, X* arg4) where T : struct where U : unmanaged where W : unmanaged where X : unmanaged
    {

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public unsafe static class EfiApplication
{
    [System.Runtime.RuntimeExport("EfiMain")]
    unsafe static long EfiMain(IntPtr imageHandle, EFI_SYSTEM_TABLE* systemTable)
    {
        EfiRuntimeHost.Initialize(systemTable);

        Console.Clear();

        Game.Main();

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[StructLayout(LayoutKind.Sequential)]
public unsafe readonly struct EFI_SIMPLE_TEXT_INPUT_PROTOCOL
{
    private readonly IntPtr _reset;
    private readonly IntPtr _readKeyStroke;

    public readonly IntPtr WaitForKey;

    public void Reset(void* handle, bool ExtendedVerification)
    {

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public unsafe static ConsoleColor ForegroundColor
{
    set
    {
        s_consoleAttribute = (ushort)value;
        uint color = s_consoleAttribute;
        EfiRuntimeHost.SystemTable->ConOut->SetAttribute(EfiRuntimeHost.SystemTable->ConOut, color);
    }
}

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public unsafe static class EfiRuntimeHost
{
    public static EFI_SYSTEM_TABLE* SystemTable { get; private set; }

    public static void Initialize(EFI_SYSTEM_TABLE* systemTable)
    {
        SystemTable = systemTable;
    }
}

kant2002

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="Microsoft Visual Studio Offline Packages" value="C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\"/>
  </packageSources>
</configuration>