Apple has announced plans to transition its Mac hardware line to a new Arm64-based chip that they refer to as “Apple Silicon”. This epic tracks the high level status of the milestones required to ship this feature in .NET 6.

.NET 6 will include new runtime id -- osx-arm64 -- for targeting this hardware. It refers to the macOS operating system running on Apple Silicon devices.

.NET Rosetta Emulation

• Support .NET with Rosetta 2 emulation Support .NET on Apple Silicon with Rosetta 2 emulation #44897 (Fixes in Big Sur 11.2 Beta2)

.NET 6 - CoreCLR Native

Functionality

• Support compilation targeting osx-arm64
• Modify code generation to support osx-arm64 security features
• Modify code generation to support osx-arm64 interop with native libraries

Testing

• Apple Silicon Prototype hardware available
• Manual testing of basic inner and outer loop tests
• Apple commercially shipping arm64 macos devices
• CI/CD Testing enabled
• CI/CD Stress testing enabled

Stability

• Basic tests passing rate > 99%
• Stress tests passing rate > 99%
• All tests passing rate > 99.9%

Availability

• .NET Core runtime nightly builds available
• ASP.NET Core runtime nightly builds available Enable ASP.NET Core on Apple Silicon aspnetcore#26821
• .NET Core SDK nightly builds available Build .NET SDK for Apple Silicon installer#8840 (See Epic: Support Apple Silicon #43313 (comment))
• .NET 6 preview available
• .NET 6 release available

Details

See Enable .NET Core on Apple Silicon for the full set of related PRs and issues.

.NET 6 - Mono

Functionality

• Support compilation targeting osx-arm64
• Modify code generation to support osx-arm64 security features
• Modify code generation to support osx-arm64 interop with native libraries

Testing

• Apple Silicon Prototype hardware available
• Manual testing of basic inner and outer loop tests
• Apple commercially shipping arm64 macos devices
• CI/CD Testing enabled
• CI/CD Stress testing enabled

Stability

• Basic tests passing rate > 99%
• Stress tests passing rate > 99%
• All tests passing rate > 99.9%

Availability

• Runtime nightly builds available
• .NET 6 preview available
• .NET 6 release available

/cc @richlander @mangod9 @janvorli @JulieLeeMSFT @sandreenko @tommcdon @steveisok @directhex @akoeplinger @jeffschwMSFT