vshymanskyy/wasm3

wasi

Public
wasmer run vshymanskyy/wasm3

Wasm3

Wasm3 is the fastest WebAssembly interpreter, and the most universal runtime.
It's packaged into a WebAssembly package, so you can finally run WebAssembly on WebAssembly πŸ˜†

Running on WebAssembly.sh

Open WebAssembly.sh

First you need to fetch a wasm file you'd like to run:

$ curl https://raw.githubusercontent.com/wasm3/wasm3/main/test/lang/fib32.wasm -o /tmp/fib32.wasm

$ ls -l /tmp/fib32.wasm
---------- 1 somebody somegroup 62 1970-01-19 05:45 /tmp/fib32.wasm

Now we can run wasm3 in interactive mode:

$ wasm3 --repl /tmp/fib32.wasm
wasm3> fib 20
Result: 6765
wasm3> fib 30
Result: 832040
wasm3> ^C
$

Or run a specific function directly:

$ wasm3 --func fib /tmp/fib32.wasm 30
Result: 832040

wasm3 also supports WASI, so you can run:

$ curl https://raw.githubusercontent.com/wasm3/wasm3/main/test/wasi/simple/test.wasm -o /tmp/test.wasm
$ wasm3 /tmp/test.wasm

or even... run wasm3 inside wasm3:

$ curl https://registry-cdn.wapm.io/contents/vshymanskyy/wasm3/0.5.0/build/wasm3-wasi.wasm -o /tmp/wasm3.wasm
$ wasm3 --stack-size 100000 /tmp/wasm3.wasm /tmp/test.wasm

Tracing

You can also get structured traces of arbitrary WASM file execution (and this requires no specific support from the runtime):

$ wasm3-strace --repl /tmp/fib32.wasm
wasm3> fib 3
fib (i32: 3) {
  fib (i32: 1) {
  } = 1
  fib (i32: 2) {
    fib (i32: 0) {
    } = 0
    fib (i32: 1) {
    } = 1
  } = 1
} = 2
Result: 2

WASI apps tracing is also supported:

$ wasm3-strace /tmp/test.wasm trap
_start () {
  __wasm_call_ctors () {
    __wasilibc_populate_preopens () {
      wasi_snapshot_preview1!fd_prestat_get(3, 65528) { <native> } = 0
      malloc (i32: 2) {
        dlmalloc (i32: 2) {
          sbrk (i32: 0) {
          } = 131072
        } = 70016
      } = 70016
...
        strcmp (i32: 70127, i32: 32) {
        } = 0
        test_trap () {
          a () {
            b () {
              c () {
              } !trap = [trap] unreachable executed
...
==== wasm backtrace:
  0: 0x000c59 - .unnamed!c
  1: 0x000c5e - .unnamed!b
  2: 0x000c68 - .unnamed!a
  3: 0x000c72 - .unnamed!test_trap
  4: 0x000d2c - .unnamed!main
  5: 0x0037c9 - .unnamed!__main_void
  6: 0x000edb - .unnamed!__original_main
  7: 0x0002f3 - .unnamed!_start
Error: [trap] unreachable executed

πŸš€ The fastest WebAssembly interpreter. You can finally run WebAssembly on WebAssembly πŸ˜†


Github
More packages
Lisp for WebAssembly
mbrock avatar
mbrock
mbrock avatar
mbrock
A WebAssembly interpreter
Wasmer Customer Support
Wasmer Customer Support
ayysadmin avatar
ayysadmin
Wasmer Customer Support
Wasmer Customer Support
ayysadmin avatar
ayysadmin
A WebAssembly interpreter
YAMAMOTO Takashi
YAMAMOTO Takashi
YAMAMOTO Takashi
YAMAMOTO Takashi
The WebAssembly Binary Toolkit
Syrus Akbary
Syrus Akbary
mark
mark
Syrus Akbary
Syrus Akbary
mark
mark
Base64 in WebAssembly
Ken Matsui
Ken Matsui
Ken Matsui
Ken Matsui
UUID in WebAssembly
Ken Matsui
Ken Matsui
Ken Matsui
Ken Matsui
The WebAssembly Binary Toolkit
Selection sort in WebAssembly
spirin.vladimir@gmail.com
spirin.vladimir@gmail.com
spirin.vladimir@gmail.com
spirin.vladimir@gmail.com
Ruby-2.6.1 in WebAssembly
Madao Chris
Madao Chris
Madao Chris
Madao Chris
This is a port of a1k0n donut.c to WebAssembly
Alvin
Alvin
Alvin
Alvin

Making software universally accessible