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A comment on Show HN: A new stdlib for Golang focusing on platform native support. Parent comment

Re:Show HN: A new stdlib for Golang focusing on platform nat... by dolmen on Tuesday October 03, 2023 @09:27AM (#37751584)
What is that `g` register that you are talking about. It seems to be a reference to some internals of the Go. Do you have some references to some existing documentation about this thing?
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Re:Show HN: A new stdlib for Golang focusing on platform nat... by Leotard6963 on Tuesday October 03, 2023 @10:25AM (#37752420)
I'm afraid there is no such resource, but you may find cmd/compile/abi-internal.md[1] helpful

And in brief introduction, the `g` register is a non-scratch register, and is preserved by the go compiler, it stores the poitner to current goroutine (type `g` in the official runtime, a structure serves the similar purpose of TCB), and since all general purpose registers are thread local, the goroutine may enjoy some thread-local features without any thread-local requirements to the running environment.

[1]: https://github.com/golang/go/blob/master/src/cmd/compile/abi...

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