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tinygo-wamr-module

WebAssembly Micro Runtime (WAMR) compatible WASM module written using TinyGo.

https://github.com/bytecodealliance/wasm-micro-runtime

How to build

You can either compile your TinyGo WASM Module targeting WASI Preview 1, or the even smaller WASM Unknown.

WASI Preview 1

To build for WASI Preview 1, run this command:

./build.sh wasi

The compiled WASM module will be in the build directory:

$ ls -l build/test.wasm 
-rwxrwxr-x 1 ron ron 13697 sep  2 20:45 build/test.wasm

You can use either the build/test.wasm file, or the ./build/test_wasm.h file, by copying it into the directory in which you want to use it from your WAMR application.

WASM Unknown

To build for WASM Unknown, run this command:

./build.sh wasmunknown

The compiled WASM module will be in the build directory:

$ ls -l build/test.wasm 
-rwxrwxr-x 1 ron ron 329 sep  2 20:45 build/test.wasm

You can use either the build/test.wasm file, or the ./build/test_wasm.h file, by copying it into the directory in which you want to use it from your WAMR application.

Running your compiled module using WAMR

Running with iwasm

Here is the TinyGo module running on Linux using the iwasm command line tool:

iwasm -f app_main ./build/test.wasm 
Hello, TinyGo!

See https://github.com/bytecodealliance/wasm-micro-runtime/tree/main/product-mini#build-iwasm

Running with Zephyr

Compiling WAMR on Zephyr for the STM32 Nucleo-144 board

west build -b nucleo_f767zi \
    . -p always -- \
    -DWAMR_BUILD_TARGET=THUMBV7 \
    -DWAMR_BUILD_GLOBAL_HEAP_SIZE=262144
west flash

Here is the TinyGo module running on Zephyr on an STM32 Nucleo-144 board in the product-mini/platforms/zephyr/simple example with verbose logging.

Connected to /dev/ttyACM0. Press Ctrl-C to exit.
*** Booting Zephyr OS build v3.7.0-1575-g45705a84ab8e ***
[00:00:00:021 - 20020E40]: Load type section success.

[00:00:00:026 - 20020E40]: Load import section success.

[00:00:00:031 - 20020E40]: Load function section success.

[00:00:00:037 - 20020E40]: Load memory section success.

[00:00:00:042 - 20020E40]: Load export section success.

[00:00:00:047 - 20020E40]: Load datacount section success.

[00:00:00:052 - 20020E40]: Load code segment section success.

[00:00:00:058 - 20020E40]: Load data segment section success.

[00:00:00:063 - 20020E40]: Ignore custom section [name].
[00:00:00:068 - 20020E40]: Ignore custom section [producers].
[00:00:00:074 - 20020E40]: Ignore custom section [target_features].
[00:00:00:080 - 20020E40]: Load module success.

[00:00:00:085 - 20020E40]: Memory instantiate:
[00:00:00:089 - 20020E40]:   page bytes: 73728, init pages: 1, max pages: 1
[00:00:00:095 - 20020E40]:   heap offset: 65536, heap size: 8192

[00:00:00:111 - 20020E40]: Memory instantiate success.
[00:00:00:117 - 20020E40]: Calling app_main function

Hello, TinyGo!
result: 0x0
elapsed: 135

See https://github.com/bytecodealliance/wasm-micro-runtime/blob/main/product-mini/platforms/zephyr/simple/README.md