https://github.com/3f/unmanagedemitcalli

A tiny hack of the System.Private.CoreLib to provide an Unmanaged EmitCalli implementation at the .NET Standard 2.0 layer.
https://github.com/3f/unmanagedemitcalli

coreclr corelib dllexport dotnet dotnetcore emitcalli hack netstandard netstandard2 netstandard20 unmanaged

Last synced: about 1 month ago
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A tiny hack of the System.Private.CoreLib to provide an Unmanaged EmitCalli implementation at the .NET Standard 2.0 layer.

• Host: GitHub
• URL: https://github.com/3f/unmanagedemitcalli
• Owner: 3F
• License: mit
• Created: 2021-01-07T20:51:02.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-01-07T21:13:35.000Z (over 5 years ago)
• Last Synced: 2025-12-10T06:48:25.872Z (6 months ago)
• Topics: coreclr, corelib, dllexport, dotnet, dotnetcore, emitcalli, hack, netstandard, netstandard2, netstandard20, unmanaged
• Language: C#
• Homepage: https://twitter.com/github3F/status/1195050366615924742
• Size: 46.9 KB
• Stars: 11
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md
  • Changelog: changelog.txt
  • Funding: .github/FUNDING.yml
  • License: License.txt

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README

          
# [UnmanagedEmitCalli](https://github.com/3F/UnmanagedEmitCalli)

A tiny **[hack](https://github.com/3F/UnmanagedEmitCalli/issues/13)** of the System.Private.CoreLib to provide missed *Unmanaged EmitCalli* implementation at the .NET Standard **2.0** layer.

[![Build status](https://ci.appveyor.com/api/projects/status/6m24rr5o891fluhb/branch/master?svg=true)](https://ci.appveyor.com/project/3Fs/unmanagedemitcalli/branch/master)

[![release-src](https://img.shields.io/github/release/3F/UnmanagedEmitCalli.svg)](https://github.com/3F/UnmanagedEmitCalli/releases/latest)

[![License](https://img.shields.io/badge/License-MIT-74A5C2.svg)](https://github.com/3F/UnmanagedEmitCalli/blob/master/License.txt)

[![NuGet package](https://img.shields.io/nuget/v/UnmanagedEmitCalli.svg)](https://www.nuget.org/packages/UnmanagedEmitCalli/) 

## Why UnmanagedEmitCalli ?

An *Unmanaged EmitCalli* is available only with .NET Core 2.1+ [[?](https://github.com/3F/Conari/issues/13)] That turns into a quest when you need .NET Standard 2.0 targeting.

This, however, does not require a full reimplementing or a huge dependencies like Cecil etc.

Because you can simply use the same techniques as we do https://github.com/3F/Conari/issues/13#issuecomment-554010927

[UnmanagedEmitCalli](https://github.com/3F/UnmanagedEmitCalli) provides most common implementation that can be used either through dependencies or copy-paste of a bit of source code. Enjoy!

## Where ?

This was used initially for 🧬 [Conari](https://github.com/3F/Conari) - Platform for working with unmanaged memory, pe-modules, related PInvoke features, and more for: Libraries, Executable Modules, enjoying of the unmanaged native C/C++ in .NET world, and other raw binary data. Even accessing to complex types like structures without their declaration at all.

## Example

Same for .NET Framework and .NET Core

```csharp

ILGenerator il = dyn.GetILGenerator();

for(int i = 0; i < mParams.Length; ++i) {

    il.Emit(OpCodes.Ldarg, i);

}

if(IntPtr.Size == sizeof(Int64)) {

    il.Emit(OpCodes.Ldc_I8, ptr.ToInt64());

}

else {

    il.Emit(OpCodes.Ldc_I4, ptr.ToInt32());

}

il.EmitCalliStd(CallingConvention.Cdecl, tret, mParams);

il.Emit(OpCodes.Ret);

```

## 🍰 Open and Free

Open Source project; MIT License, Yes! Enjoy!

## 🗸 License

The [MIT License (MIT)](https://github.com/3F/UnmanagedEmitCalli/blob/master/License.txt)

```

Copyright (c) 2019-2021  Denis Kuzmin  github/3F

```

[ [ ☕ Donate ](https://3F.github.com/Donation/) ]

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