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A comment on What is wrong with all those AArch64 desktops?. Parent comment

Re:What is wrong with all those AArch64 desktops? by ridiculous_fish on Friday January 10, 2020 @10:37PM (#22017950)
Rosetta was not a naive emulator. It was a dynamic, optimizing re-compiler.

There's two reasons to think that an ARM transition would be easier:

1. The endianness is the same. The PPC/Intel transition required processes to share memory while disagreeing on byte order.

2. Apple controls their ARM CPU designs. They can add whatever they like.

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Re:What is wrong with all those AArch64 desktops? by andrekandre on Saturday January 11, 2020 @05:15PM (#22022732)
right, and

3. rosetta only emulated the actual app binary; eventually it called in to native libs, so performance for the most part held up really well iirc (for apps, not sure about games)

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