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Binary format support for wasm globals #652

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Merged
merged 1 commit into from
Jul 22, 2016
Merged

Binary format support for wasm globals #652

merged 1 commit into from
Jul 22, 2016

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kripken
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@kripken kripken commented Jul 22, 2016

I think this is right, but not sure I read the spec correctly.

Each global has a type and a normally-emitted expression, with a 0 ending, and it must contain one expression which is popped and used as the initial value for the global. @rossberg-chromium, is that correct?

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Right. I was following WebAssembly/design#727, but still missing the mutability flag. The init expression is terminated by 0x0F (end) in the encoding. It must have a matching type.

Also note that the opcodes for get/set_global are probably not final yet, because of the conflict between design PRs #727 and #711.

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kripken commented Jul 22, 2016

Great, thanks. I think this is all correct currently.

(Looks like I misspoke earlier when I said 0, I meant the end marker, which is indeed 0x0F.)

@kripken kripken merged commit b17a18a into master Jul 22, 2016
@kripken kripken deleted the globals-binary branch July 22, 2016 19:42
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