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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <script> | |
| var memory; | |
| var env = { | |
| sys: { | |
| print(ptr) { | |
| let p = ptr; | |
| while (memory[p]) p++; | |
| console.log(String.fromCharCode(...memory.subarray(ptr, p))); | |
| } | |
| } | |
| }; | |
| fetch('helloworld2.wasm') | |
| .then(req => req.arrayBuffer()) | |
| .then(buf => WebAssembly.instantiate(buf, env)) | |
| .then(({instance}) => { | |
| memory = new Uint8Array(instance.exports.memory.buffer); | |
| instance.exports.main(); | |
| }); | |
| </script> | |
| <h1>base64 helloworld2.wasm</h1> | |
| <p>AGFzbQ0AAAABiICAgAACYAF/AGAAAAKNgICAAAEDc3lzBXByaW50AAADgoCAgAABAQWGgICAAAEByAHIAQeRgICAAAIGbWVtb3J5AgAEbWFpbgABCoyAgIAAAYaAgIAAAEEAEAALC5OAgIAAAQBBAAsNSGVsbG8sIHdvcmxkAA==</p> | |
| <h1>wasm-dis helloworld2.wasm | tee helloworld2.wast</h1> | |
| <pre> | |
| (module | |
| (memory (export "memory") 200 200) | |
| (data (i32.const 0) "Hello, world\00") | |
| (import $print "sys" "print" (param i32)) | |
| (func (export "main") | |
| (call $print | |
| (i32.const 0) | |
| ) | |
| ) | |
| ) | |
| </pre> | |
| </body> | |
| </html> |
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thanks for sharing. good wasm guide is very rare