d5a2eb397c
* Update the `*.wast` runner to use the `wasmtime` API This commit migrates the `wasmtime-wast` crate, which executes `*.wast` test suites, to use the `wasmtime` crate exclusively instead of the raw support provided by the `wasmtime-*` family of crates. The primary motivation for this change is to use `*.wast` test to test the support for interface types, but interface types is only being added in the `wasmtime` crate for now rather than all throughout the core crates. This means that without this transition it's much more difficult to write tests for wasm interface types! A secondary motivation for this is that it's testing the support we provide to users through the `wasmtime` crate, since that's the expectation of what most users would use rather than the raw `wasmtime-*` crates. * Run rustfmt * Fix the multi example * Handle v128 values in the `wasmtime` crate Ensure that we allocate 128-bit stack slots instead of 64-bit stack slots. * Update to master * Add comment
Wasmtime: a WebAssembly Runtime
A Bytecode Alliance project
Wasmtime is a standalone wasm-only optimizing runtime for WebAssembly and WASI. It runs WebAssembly code outside of the Web, and can be used both as a command-line utility or as a library embedded in a larger application.
To get started, visit wasmtime.dev.
There are Rust, C, and C++ toolchains that can compile programs with WASI. See the WASI intro for more information, and the WASI tutorial for a tutorial on compiling and running programs using WASI and wasmtime, as well as an overview of the filesystem sandboxing system.
Wasmtime passes the WebAssembly spec testsuite. To run it, update the
tests/spec_testsuite submodule with git submodule update --remote, and it
will be run as part of cargo test.
Wasmtime does not yet implement Spectre mitigations, however this is a subject of ongoing research.
Additional goals for Wasmtime include:
- Support a variety of host APIs (not just WASI), with fast calling sequences, and develop proposals for additional API modules to be part of WASI.
- Facilitate development and testing around the Cranelift and Lightbeam JITs, and other WebAssembly execution strategies.
- Develop a native ABI used for compiling WebAssembly suitable for use in both JIT and AOT to native object files.
Including Wasmtime in your project
Wasmtime exposes an API for embedding as a library through the wasmtime subcrate,
which contains both a high-level and safe Rust API, as well as a C-compatible API
compatible with the proposed WebAssembly C API.
For more information, see the Rust API embedding chapter of the Wasmtime documentation.
It's Wasmtime.