forked from AbleOS/ableos
40 lines
1.2 KiB
Rust
40 lines
1.2 KiB
Rust
|
pub mod host_functions;
|
||
|
|
|
||
|
|
extern crate wasmi;
|
||
|
|
// extern crate wabt;
|
||
|
|
|
||
|
|
use alloc::vec::Vec;
|
||
|
|
use genfs::{Fs, OpenOptions};
|
||
|
|
use wasmi::{ImportsBuilder, ModuleInstance, NopExternals};
|
||
|
|
|
||
|
|
use crate::{filesystem::FILE_SYSTEM, wasm_jumploader::host_functions::HostExternals};
|
||
|
|
|
||
|
|
pub fn interp() {
|
||
|
|
let fs = &*FILE_SYSTEM.lock();
|
||
|
|
|
||
|
|
let file = fs
|
||
|
|
.open(b"/home/able/test.wasm", OpenOptions::new().read(true))
|
||
|
|
.unwrap();
|
||
|
|
|
||
|
|
let mut wasm_binary = Vec::new();
|
||
|
|
|
||
|
|
let ret = file.read_to_end(&mut wasm_binary).unwrap();
|
||
|
|
|
||
|
|
// Load wasm binary and prepare it for instantiation.
|
||
|
|
let module = wasmi::Module::from_buffer(&wasm_binary).expect("failed to load wasm");
|
||
|
|
|
||
|
|
let imports = ImportsBuilder::new().with_resolver("env", &host_functions::HostExternals {});
|
||
|
|
|
||
|
|
// Instantiate a module with empty imports and
|
||
|
|
// assert that there is no `start` function.
|
||
|
|
let instance = ModuleInstance::new(&module, &imports)
|
||
|
|
.expect("failed to instantiate wasm module")
|
||
|
|
.assert_no_start();
|
||
|
|
|
||
|
|
let ret = instance
|
||
|
|
.invoke_export("start", &[], &mut HostExternals {})
|
||
|
|
.expect("failed to execute export");
|
||
|
|
|
||
|
|
info!("collected wasm return value: {:?}", ret);
|
||
|
|
}
|