Hacker Read

JepZ | karma 2073 | avg karma 2.95 · 2018-09-25 17:48:17

Does anybody know if that kernel module can execute WASM generated from Go or Rust too?

steveklabnik | karma 91260 | avg karma 5.08 · 2018-09-25 18:03:43

Unless they’re doing something non-standard, wasm doesn’t care what language it came from.

That said, this claims it relies on emscripten, I think? You can do that with Rust, though it’s not the preferred way. I sure about Go.

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comesee | karma -16 | avg karma -0.11 · 2018-09-25 18:36:10

From looking at high_level.h it can instantiate any wasm file, but it seems to need the host code specially integrated. There is a function to instantiate the emscripten runtime, probably code can be added to instantiate the go or rust runtimes.

steveklabnik | karma 91260 | avg karma 5.08 · 2018-09-25 23:44:43+00:00

Rust doesn’t have a runtime. Well, at least not in the sense of other languages; it’s comparable to C :)

Emscripten provides a libc; I wondered if it required it. I guess not.

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lloeki | karma 11319 | avg karma 2.78 · 2018-09-26 04:13:41

> it’s comparable to C

I think you may want to reassess your definition of what a runtime is ;)

> "crt" stands for "C runtime", and the zero stands for "the very beginning".

[ https://en.wikipedia.org/wiki/Crt0 | https://en.wikipedia.org/wiki/Runtime_library ]

Yup. C definitely has a runtime!

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steveklabnik | karma 91260 | avg karma 5.08 · 2018-09-26 12:49:39+00:00

That’s why I said that Rust’s is comparable to C. Both have very, very small ones. Which is what most people mean when they say “no runtime”, since every non-assembly language has some amount of runtime.