1
2
3
4

wget https://github.com/tinygo-org/tinygo/releases/download/v0.30.0/tinygo0.30.0.linux-amd64.tar.gz
tar xf tinygo0.30.0.linux-amd64.tar.gz -C /usr/local/
/usr/local/tinygo/bin/tinygo version
tinygo version 0.30.0 linux/amd64 (using go version go1.16.9 and LLVM version 16.0.1)

1
2
3
4
5
6
7
8

package main

func main() {}

//export add
func add(a, b int) int {
	return a + b
}

1

tinygo build -o go.wasm -target=wasi go/wasm.go

1
2
3
4
5

cargo install wasm-pack
cargo install wasmer-cli
cargo install wasm-bindgen-cli
rustup target add wasm32-unknown-unknown
rustup target add wasm32-wasi

1
2
3
4
5
6
7
8

pub fn main() {
}

#[no_mangle]
pub extern fn add(left: usize, right: usize) -> usize {
    let sum = left + right;
    return sum;
}

1

wasm-pack build --target web

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

package main

import (
	"flag"
	"fmt"
	"os"

	wasmer "github.com/wasmerio/wasmer-go/wasmer"
)

func main() {
	var wasmFile = flag.String("wasm_file", "go.wasm", "wasm file")
	flag.Parse()
	wasmBytes, _ := os.ReadFile(*wasmFile)

	store := wasmer.NewStore(wasmer.NewEngine())
	module, _ := wasmer.NewModule(store, wasmBytes)

	wasiEnv, _ := wasmer.NewWasiStateBuilder("wasi-program").
		// Choose according to your actual situation
		// Argument("--foo").
		// Environment("ABC", "DEF").
		// MapDirectory("./", ".").
		Finalize()
	importObject, err := wasiEnv.GenerateImportObject(store, module)
	check(err)

	instance, err := wasmer.NewInstance(module, importObject)
	check(err)

	start, err := instance.Exports.GetWasiStartFunction()
	check(err)
	start()

	add, err := instance.Exports.GetFunction("add")
	check(err)
	result, _ := add(1, 2)
	fmt.Println(result)
}

func check(e error) {
	if e != nil {
		panic(e)
	}
}

1
2
3
4
5
6
7

# 测试GO生成的wasm
 $ go run sample.go --wasm_file ./go.wasm                                                                                                                                                                                                                                    
3

# 测试rust生成的wasm
 $ go run sample.go --wasm_file wasi-demo/target/wasm32-wasi/release/wasi-demo.wasm
3