libffi-wasm32
Limited port of libffi to pure wasm32.
Limitations compared to vanilla libffi
- Function argument count is capped to
4 - For each function type, closure count is capped to
16. Both constants can be tuned, and exceptions can be made for specific function types - Closure API is modified, closure alloc/prep is done in a single call
- No support for structures or variadic functions yet
How to use
This is a Haskell cabal project, simply run the libffi-wasm32
executable. It'll generate additional C sources in cbits. Then
include stuff in cbits for your own usage.
The generated cbits are also available as CI artifacts.
How?
See this blog post for details.