[Bug 266] Can threadasm.S be replaced with generics?

[via D.gnu]

https://bugzilla.gdcproject.org/show_bug.cgi?id=266

--- Comment #4 from Johannes Pfau <johannespfau at gmail.com> ---
Actually there's one more thing to watch out for:
The ARM code does not save & restore the link register. The context switch is
supposed to also switch the 'call stack' so this is invalid as well, as the
function will return to the original caller and not the caller belonging to the
newp* argument.

Nevertheless, an intrinsic approach would be much cleaner and the compiler
already knows all required backend / ABI information anyway. So maybe once
we're merged into GCC we can introduce a new __builtin_switch_context for this?

Actually, shouldn't Go have something similar for their goroutine stuff?

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