forked from Mirrors/wasm3
Volodymyr Shymanskyy
4 years ago
parent
90fa7f5639
commit
490bf0c9d6
@ -0,0 +1,57 @@
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//
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// Wasm3 - high performance WebAssembly interpreter written in C.
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//
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// Copyright © 2019 Steven Massey, Volodymyr Shymanskyy.
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// All rights reserved.
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//
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#include <stdio.h>
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#include <stdlib.h>
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#include <emscripten.h>
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#include "wasm3.h"
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#include "m3_env.h"
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IM3Environment env;
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EMSCRIPTEN_KEEPALIVE
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void init() {
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env = m3_NewEnvironment ();
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if (!env) return;
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}
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EMSCRIPTEN_KEEPALIVE
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IM3Runtime new_runtime() {
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return m3_NewRuntime (env, 64*1024, NULL);
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}
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EMSCRIPTEN_KEEPALIVE
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void free_runtime(IM3Runtime runtime) {
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m3_FreeRuntime (runtime);
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}
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EMSCRIPTEN_KEEPALIVE
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void load(IM3Runtime runtime, uint8_t* wasm, size_t fsize) {
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M3Result result = m3Err_none;
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IM3Module module;
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result = m3_ParseModule (env, &module, wasm, fsize);
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if (result) return;
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result = m3_LoadModule (runtime, module);
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if (result) return;
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}
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EMSCRIPTEN_KEEPALIVE
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uint32_t call(IM3Runtime runtime, const char* name, int argc, const char** argv) {
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M3Result result = m3Err_none;
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IM3Function f;
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result = m3_FindFunction (&f, runtime, name);
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if (result) return -1;
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result = m3_CallWithArgs (f, argc, argv);
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if (result) return -2;
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return *(uint64_t*)(runtime->stack);
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}
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@ -0,0 +1,139 @@
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'use strict';
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/*
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Node.js
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-------
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node --v8-options | grep -A1 wasm
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--print_wasm_code --code-comments
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--wasm_interpret_all --trace_wasm_interpreter
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SpiderMonkey
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------------
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export PATH=/opt/jsshell/:$PATH
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js --help | grep wasm
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--wasm-compiler=baseline/ion/cranelift/baseline+ion/baseline+cranelift
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--wasm-verbose
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--ion-full-warmup-threshold=1
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*/
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const isNodeJS = (typeof(process) != 'undefined');
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function encode(str) {
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var Len = str.length, resPos = -1;
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var resArr = new Uint8Array(Len * 3);
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for (var i = 0; i !== Len; i += 1) {
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var point = str.charCodeAt(i);
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if (point <= 0x007f) {
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resArr[resPos += 1] = point;
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}
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}
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return resArr.subarray(0, resPos + 1);
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}
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if (isNodeJS) {
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var scriptArgs = process.argv.slice(2);
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const fs = require('fs');
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var readFile = (fn) => new Uint8Array(fs.readFileSync(fn));
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} else {
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var readFile = (fn) => read(fn, 'binary');
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}
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const env = {
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__memory_base: 0,
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__table_base: 0,
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"env": {
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"emscripten_notify_memory_growth": function() {},
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"emscripten_get_sbrk_ptr": function() {},
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},
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"wasi_snapshot_preview1": {
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"fd_close": function() {},
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"fd_seek": function() {},
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"fd_write": function() { return -1; },
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"proc_exit": function() {}
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}
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}
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var instance;
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//let encoder = new TextEncoder('utf-8');
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function strToMem(s) {
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const data = encode(s);
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const ptr = instance.exports.malloc(data.length+1);
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const buf = new Uint8Array(instance.exports.memory.buffer, ptr, data.length+1);
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buf.set(data)
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buf[data.length] = 0;
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return ptr;
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}
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function bufToMem(data) {
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const ptr = instance.exports.malloc(data.length);
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const buf = new Uint8Array(instance.exports.memory.buffer, ptr, data.length);
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buf.set(data)
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return ptr;
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}
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function new_runtime() {
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return instance.exports.new_runtime();
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}
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function free_runtime(runtime) {
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instance.exports.free_runtime(runtime);
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}
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function load(runtime, buff) {
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const ptr = bufToMem(buff);
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instance.exports.load(runtime, ptr, buff.length);
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}
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function call(runtime, fname, args) {
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const namePtr = strToMem(fname)
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const argsCnt = args.length;
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const argsPtr = instance.exports.malloc(argsCnt*4);
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const argsArray = new Uint32Array(
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instance.exports.memory.buffer,
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argsPtr, argsCnt
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);
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args.forEach((item, idx) => {
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argsArray[idx] = strToMem(item.toString());
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})
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return instance.exports.call(runtime, namePtr, argsCnt, argsPtr);
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}
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/* TODO:
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* - callback/hook exported function calls
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*
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*/
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async function main() {
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const FILE = scriptArgs[0];
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const FUNC = scriptArgs[1];
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const ARGS = scriptArgs.slice(2);
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for (let i=0; i<25000; i++) {
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let rt = new_runtime();
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load(rt, readFile(FILE));
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let result = call(rt, FUNC, [1]);
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//console.log(i, result);
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free_runtime(rt);
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}
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}
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try {
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WebAssembly.instantiate(readFile('wasm3.wasm'), env).then(result => {
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instance = result.instance;
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instance.exports.init();
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main();
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console.log(`Memory size: ${instance.exports.memory.buffer.byteLength}`);
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})
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} catch (e) {
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console.log(JSON.stringify(e.message));
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}
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