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chibiwasm

This repository was created for the purpose of learning how Wasm works. Please do not use it in production.

If you want to learn how Wasm runtime works, I recommend this book :)

https://skanehira.github.io/writing-a-wasm-runtime-in-rust/

Usage

$ cat
(module
  (func $add (export "add") (param i32 i32) (result i32)
    (local.get 0)
    (local.get 1)
    (i32.add)
  )
)
$ wat2wasm add.wat
$ cargo run -- add.wasm add 1 2
    Finished dev [unoptimized + debuginfo] target(s) in 0.09s
     Running `target/debug/chibiwasm add.wasm add 1 2`
3

Use as a crate

use chibiwasm::{Runtime, Value};

fn main() -> anyhow::Result<()> {
    let mut runtime = Runtime::from_file("examples/fib.wasm", None)?;
    if let Some(output) = runtime.call("fib".into(), vec![Value::I32(10)])? {
        println!("output: {}", output);
    }
    Ok(())
}
$ cargo run -q --example fib
output: 89

Test

$ cargo make test

Spec

Base on core 1.

https://www.w3.org/TR/wasm-core-1/

tests

The list is base on https://github.com/WebAssembly/spec/tree/wg-1.0/test/core

NOTE: Checking only the test cases that have passed both assert_return and assert_trap.

  • address.wast
  • align.wast
  • binary_leb128.wast
  • binary.wast
  • block.wast
  • br.wast
  • br_if.wast
  • br_table.wast
  • break_drop.wast
  • call.wast
  • call_indirect.wast
  • comments.wast
  • const.wast
  • conversions.wast
  • custom.wast
  • data.wast
  • elem.wast
  • endianness.wast
  • exports.wast
  • f32.wast
  • f32_bitwise.wast
  • f32_cmp.wast
  • f64.wast
  • f64_bitwise.wast
  • f64_cmp.wast
  • fac.wast
  • float_exprs.wast
  • float_literals.wast
  • float_memory.wast
  • float_misc.wast
  • forward.wast
  • func.wast
  • func_ptrs.wast
  • globals.wast
  • i32.wast
  • i64.wast
  • if.wast
  • imports.wast
  • inline_module.wast
  • int_exprs.wast
  • int_literals.wast
  • labels.wast
  • left_to_right.wast
  • linking.wast
  • load.wast
  • local_get.wast
  • local_set.wast
  • local_tee.wast
  • loop.wast
  • memory.wast
  • memory_grow.wast
  • memory_redundancy.wast
  • memory_size.wast
  • memory_trap.wast
  • names.wast
  • nop.wast
  • return.wast
  • select.wast
  • skip_stack_guard_page.wast
  • stack.wast
  • start.wast
  • store.wast
  • switch.wast
  • token.wast
  • traps.wast
  • type.wast
  • unreachable.wast
  • unreached_invalid.wast
  • unwind.wast
  • utf8_custom_section_id.wast
  • utf8_import_field.wast
  • utf8_import_module.wast
  • utf8_invalid_encoding.wast

LICENSE

This software includes the work that is distributed in the Apache License 2.0.