Epic: Support Apple Silicon

[sdmaclea]

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

[warrenrumak]

By the time .NET 6 is released, it will have been more than five years since Apple renamed this operating system to "macOS". It's not called "OS X" any more. If it can be done correctly in TFMs, it can be done correctly in RIDs.

[richlander]

Yup. Please file an issue @warrenrumak.