adds HostInfo.NativeArchitecture

[intxgo]

Adds NativeArchitecture to HostInfo to empower applications to detect if they are run in emulation.

Modern desktop operating systems ported to the ARM architecture include capabilities to run x86 applications via binary translation to ease the technological transition. This is usually fine, except for applications that rely on a specific native platform, such as for installing native drivers.

Testing

Tested in the following configurations:

ARM64 CPU

macOS

• native binary

  GOARCH arm64
  Architecture arm64
  NativeArchitecture arm64

• AMD64 binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture arm64

Linux

• native binary

  GOARCH arm64
  Architecture aarch64
  NativeArchitecture aarch64

• AMD64 binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture aarch64

Windows

• native binary

N/A as Go doesn't support GOOS=Windows GOARCH=arm64

• AMD64 binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture arm64

AMD64 CPU

macOS

• native binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture x64_64

• ARM64 binary

N/A as Rosetta 2 is not supported on Intel platform

Linux

• native binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture x64_64

• ARM64 binary

  GOARCH amd64
  Architecture aarch64
  NativeArchitecture x64_64

Windows

• native binary

  GOARCH amd64
  Architecture x64_64
  NativeArchitecture x64_64

• ARM64 binary

N/A as Go doesn't support GOOS=Windows GOARCH=arm64

[fearful-symmetry]

So, I just commented for now, but I'm a little worried that Architecture and NativeArchitecture might be functionally the same on linux.

[intxgo]

Code looks fine, but I'm personally curious if we have a way to test the behavior of this under linux? On Darwin we have Rosetta, but is there some similar linux utility we're hoping to support?

Linux multiarch, that's how we run x86-64 tools in linux on Apple macbooks, etc

It's quite the contrary, we want to fail gracefully in products which cannot be run in emulation instead of giving the false impression that something is wrong with them.