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Commit ebcf43c9 authored by Steven's avatar Steven
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chore: update gomark.wasm

parent cfb50f19
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Showing with 582 additions and 558 deletions
web/src/assets/wasm_exec.js
View file @ ebcf43c9
// Copyright 2018 The Go Authors. All rights reserved. // Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
//
"use strict"; // This file has been modified for use by the TinyGo compiler.
(() => { (() => {
// Map multiple JavaScript environments to a single common API,
// preferring web standards over Node.js API.
//
// Environments considered:
// - Browsers
// - Node.js
// - Electron
// - Parcel
if (typeof global !== "undefined") {
// global already exists
} else if (typeof window !== "undefined") {
window.global = window;
} else if (typeof self !== "undefined") {
self.global = self;
} else {
throw new Error("cannot export Go (neither global, window nor self is defined)");
}
if (!global.require && typeof require !== "undefined") {
global.require = require;
}
if (!global.fs && global.require) {
global.fs = require("fs");
}
const enosys = () => { const enosys = () => {
const err = new Error("not implemented"); const err = new Error("not implemented");
err.code = "ENOSYS"; err.code = "ENOSYS";
return err; return err;
}; };
if (!globalThis.fs) { if (!global.fs) {
let outputBuf = ""; let outputBuf = "";
globalThis.fs = { global.fs = {
constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
writeSync(fd, buf) { writeSync(fd, buf) {
outputBuf += decoder.decode(buf); outputBuf += decoder.decode(buf);
const nl = outputBuf.lastIndexOf("\n"); const nl = outputBuf.lastIndexOf("\n");
if (nl != -1) { if (nl != -1) {
console.log(outputBuf.substring(0, nl)); console.log(outputBuf.substr(0, nl));
outputBuf = outputBuf.substring(nl + 1); outputBuf = outputBuf.substr(nl + 1);
} }
return buf.length; return buf.length;
}, },
...@@ -32,99 +59,155 @@ ...@@ -32,99 +59,155 @@
const n = this.writeSync(fd, buf); const n = this.writeSync(fd, buf);
callback(null, n); callback(null, n);
}, },
chmod(path, mode, callback) { callback(enosys()); }, chmod(path, mode, callback) {
chown(path, uid, gid, callback) { callback(enosys()); }, callback(enosys());
close(fd, callback) { callback(enosys()); }, },
fchmod(fd, mode, callback) { callback(enosys()); }, chown(path, uid, gid, callback) {
fchown(fd, uid, gid, callback) { callback(enosys()); }, callback(enosys());
fstat(fd, callback) { callback(enosys()); }, },
fsync(fd, callback) { callback(null); }, close(fd, callback) {
ftruncate(fd, length, callback) { callback(enosys()); }, callback(enosys());
lchown(path, uid, gid, callback) { callback(enosys()); }, },
link(path, link, callback) { callback(enosys()); }, fchmod(fd, mode, callback) {
lstat(path, callback) { callback(enosys()); }, callback(enosys());
mkdir(path, perm, callback) { callback(enosys()); }, },
open(path, flags, mode, callback) { callback(enosys()); }, fchown(fd, uid, gid, callback) {
read(fd, buffer, offset, length, position, callback) { callback(enosys()); }, callback(enosys());
readdir(path, callback) { callback(enosys()); }, },
readlink(path, callback) { callback(enosys()); }, fstat(fd, callback) {
rename(from, to, callback) { callback(enosys()); }, callback(enosys());
rmdir(path, callback) { callback(enosys()); }, },
stat(path, callback) { callback(enosys()); }, fsync(fd, callback) {
symlink(path, link, callback) { callback(enosys()); }, callback(null);
truncate(path, length, callback) { callback(enosys()); }, },
unlink(path, callback) { callback(enosys()); }, ftruncate(fd, length, callback) {
utimes(path, atime, mtime, callback) { callback(enosys()); }, callback(enosys());
},
lchown(path, uid, gid, callback) {
callback(enosys());
},
link(path, link, callback) {
callback(enosys());
},
lstat(path, callback) {
callback(enosys());
},
mkdir(path, perm, callback) {
callback(enosys());
},
open(path, flags, mode, callback) {
callback(enosys());
},
read(fd, buffer, offset, length, position, callback) {
callback(enosys());
},
readdir(path, callback) {
callback(enosys());
},
readlink(path, callback) {
callback(enosys());
},
rename(from, to, callback) {
callback(enosys());
},
rmdir(path, callback) {
callback(enosys());
},
stat(path, callback) {
callback(enosys());
},
symlink(path, link, callback) {
callback(enosys());
},
truncate(path, length, callback) {
callback(enosys());
},
unlink(path, callback) {
callback(enosys());
},
utimes(path, atime, mtime, callback) {
callback(enosys());
},
}; };
} }
if (!globalThis.process) { if (!global.process) {
globalThis.process = { global.process = {
getuid() { return -1; }, getuid() {
getgid() { return -1; }, return -1;
geteuid() { return -1; }, },
getegid() { return -1; }, getgid() {
getgroups() { throw enosys(); }, return -1;
},
geteuid() {
return -1;
},
getegid() {
return -1;
},
getgroups() {
throw enosys();
},
pid: -1, pid: -1,
ppid: -1, ppid: -1,
umask() { throw enosys(); }, umask() {
cwd() { throw enosys(); }, throw enosys();
chdir() { throw enosys(); }, },
} cwd() {
throw enosys();
},
chdir() {
throw enosys();
},
};
} }
if (!globalThis.crypto) { if (!global.crypto) {
throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)"); const nodeCrypto = require("crypto");
global.crypto = {
getRandomValues(b) {
nodeCrypto.randomFillSync(b);
},
};
} }
if (!globalThis.performance) { if (!global.performance) {
throw new Error("globalThis.performance is not available, polyfill required (performance.now only)"); global.performance = {
now() {
const [sec, nsec] = process.hrtime();
return sec * 1000 + nsec / 1000000;
},
};
} }
if (!globalThis.TextEncoder) { if (!global.TextEncoder) {
throw new Error("globalThis.TextEncoder is not available, polyfill required"); global.TextEncoder = require("util").TextEncoder;
} }
if (!globalThis.TextDecoder) { if (!global.TextDecoder) {
throw new Error("globalThis.TextDecoder is not available, polyfill required"); global.TextDecoder = require("util").TextDecoder;
} }
// End of polyfills for common API.
const encoder = new TextEncoder("utf-8"); const encoder = new TextEncoder("utf-8");
const decoder = new TextDecoder("utf-8"); const decoder = new TextDecoder("utf-8");
let reinterpretBuf = new DataView(new ArrayBuffer(8));
var logLine = [];
globalThis.Go = class { global.Go = class {
constructor() { constructor() {
this.argv = ["js"]; this._callbackTimeouts = new Map();
this.env = {};
this.exit = (code) => {
if (code !== 0) {
console.warn("exit code:", code);
}
};
this._exitPromise = new Promise((resolve) => {
this._resolveExitPromise = resolve;
});
this._pendingEvent = null;
this._scheduledTimeouts = new Map();
this._nextCallbackTimeoutID = 1; this._nextCallbackTimeoutID = 1;
const setInt64 = (addr, v) => { const mem = () => {
this.mem.setUint32(addr + 0, v, true); // The buffer may change when requesting more memory.
this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true); return new DataView(this._inst.exports.memory.buffer);
} };
const setInt32 = (addr, v) => {
this.mem.setUint32(addr + 0, v, true);
}
const getInt64 = (addr) => {
const low = this.mem.getUint32(addr + 0, true);
const high = this.mem.getInt32(addr + 4, true);
return low + high * 4294967296;
}
const loadValue = (addr) => { const unboxValue = (v_ref) => {
const f = this.mem.getFloat64(addr, true); reinterpretBuf.setBigInt64(0, v_ref, true);
const f = reinterpretBuf.getFloat64(0, true);
if (f === 0) { if (f === 0) {
return undefined; return undefined;
} }
...@@ -132,410 +215,335 @@ ...@@ -132,410 +215,335 @@
return f; return f;
} }
const id = this.mem.getUint32(addr, true); const id = v_ref & 0xffffffffn;
return this._values[id]; return this._values[id];
} };
const storeValue = (addr, v) => { const loadValue = (addr) => {
const nanHead = 0x7FF80000; let v_ref = mem().getBigUint64(addr, true);
return unboxValue(v_ref);
};
const boxValue = (v) => {
const nanHead = 0x7ff80000n;
if (typeof v === "number" && v !== 0) { if (typeof v === "number") {
if (isNaN(v)) { if (isNaN(v)) {
this.mem.setUint32(addr + 4, nanHead, true); return nanHead << 32n;
this.mem.setUint32(addr, 0, true);
return;
} }
this.mem.setFloat64(addr, v, true); if (v === 0) {
return; return (nanHead << 32n) | 1n;
}
reinterpretBuf.setFloat64(0, v, true);
return reinterpretBuf.getBigInt64(0, true);
} }
if (v === undefined) { switch (v) {
this.mem.setFloat64(addr, 0, true); case undefined:
return; return 0n;
case null:
return (nanHead << 32n) | 2n;
case true:
return (nanHead << 32n) | 3n;
case false:
return (nanHead << 32n) | 4n;
} }
let id = this._ids.get(v); let id = this._ids.get(v);
if (id === undefined) { if (id === undefined) {
id = this._idPool.pop(); id = this._idPool.pop();
if (id === undefined) { if (id === undefined) {
id = this._values.length; id = BigInt(this._values.length);
} }
this._values[id] = v; this._values[id] = v;
this._goRefCounts[id] = 0; this._goRefCounts[id] = 0;
this._ids.set(v, id); this._ids.set(v, id);
} }
this._goRefCounts[id]++; this._goRefCounts[id]++;
let typeFlag = 0; let typeFlag = 1n;
switch (typeof v) { switch (typeof v) {
case "object":
if (v !== null) {
typeFlag = 1;
}
break;
case "string": case "string":
typeFlag = 2; typeFlag = 2n;
break; break;
case "symbol": case "symbol":
typeFlag = 3; typeFlag = 3n;
break; break;
case "function": case "function":
typeFlag = 4; typeFlag = 4n;
break; break;
} }
this.mem.setUint32(addr + 4, nanHead | typeFlag, true); return id | ((nanHead | typeFlag) << 32n);
this.mem.setUint32(addr, id, true); };
}
const loadSlice = (addr) => { const storeValue = (addr, v) => {
const array = getInt64(addr + 0); let v_ref = boxValue(v);
const len = getInt64(addr + 8); mem().setBigUint64(addr, v_ref, true);
return new Uint8Array(this._inst.exports.mem.buffer, array, len); };
}
const loadSlice = (array, len, cap) => {
return new Uint8Array(this._inst.exports.memory.buffer, array, len);
};
const loadSliceOfValues = (addr) => { const loadSliceOfValues = (array, len, cap) => {
const array = getInt64(addr + 0);
const len = getInt64(addr + 8);
const a = new Array(len); const a = new Array(len);
for (let i = 0; i < len; i++) { for (let i = 0; i < len; i++) {
a[i] = loadValue(array + i * 8); a[i] = loadValue(array + i * 8);
} }
return a; return a;
} };
const loadString = (addr) => { const loadString = (ptr, len) => {
const saddr = getInt64(addr + 0); return decoder.decode(new DataView(this._inst.exports.memory.buffer, ptr, len));
const len = getInt64(addr + 8); };
return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
}
const timeOrigin = Date.now() - performance.now(); const timeOrigin = Date.now() - performance.now();
this.importObject = { this.importObject = {
_gotest: { wasi_snapshot_preview1: {
add: (a, b) => a + b, // https://github.com/WebAssembly/WASI/blob/main/phases/snapshot/docs.md#fd_write
fd_write: function (fd, iovs_ptr, iovs_len, nwritten_ptr) {
let nwritten = 0;
if (fd == 1) {
for (let iovs_i = 0; iovs_i < iovs_len; iovs_i++) {
let iov_ptr = iovs_ptr + iovs_i * 8; // assuming wasm32
let ptr = mem().getUint32(iov_ptr + 0, true);
let len = mem().getUint32(iov_ptr + 4, true);
nwritten += len;
for (let i = 0; i < len; i++) {
let c = mem().getUint8(ptr + i);
if (c == 13) {
// CR
// ignore
} else if (c == 10) {
// LF
// write line
let line = decoder.decode(new Uint8Array(logLine));
logLine = [];
console.log(line);
} else {
logLine.push(c);
}
}
}
} else {
console.error("invalid file descriptor:", fd);
}
mem().setUint32(nwritten_ptr, nwritten, true);
return 0;
},
fd_close: () => 0, // dummy
fd_fdstat_get: () => 0, // dummy
fd_seek: () => 0, // dummy
proc_exit: (code) => {
if (global.process) {
// Node.js
process.exit(code);
} else {
// Can't exit in a browser.
throw "trying to exit with code " + code;
}
},
random_get: (bufPtr, bufLen) => {
crypto.getRandomValues(loadSlice(bufPtr, bufLen));
return 0;
},
}, },
gojs: { gojs: {
// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters) // func ticks() float64
// may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported "runtime.ticks": () => {
// function. A goroutine can switch to a new stack if the current stack is too small (see morestack function). return timeOrigin + performance.now();
// This changes the SP, thus we have to update the SP used by the imported function. },
// func wasmExit(code int32) // func sleepTicks(timeout float64)
"runtime.wasmExit": (sp) => { "runtime.sleepTicks": (timeout) => {
sp >>>= 0; // Do not sleep, only reactivate scheduler after the given timeout.
const code = this.mem.getInt32(sp + 8, true); setTimeout(this._inst.exports.go_scheduler, timeout);
this.exited = true;
delete this._inst;
delete this._values;
delete this._goRefCounts;
delete this._ids;
delete this._idPool;
this.exit(code);
},
// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
"runtime.wasmWrite": (sp) => {
sp >>>= 0;
const fd = getInt64(sp + 8);
const p = getInt64(sp + 16);
const n = this.mem.getInt32(sp + 24, true);
fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
},
// func resetMemoryDataView()
"runtime.resetMemoryDataView": (sp) => {
sp >>>= 0;
this.mem = new DataView(this._inst.exports.mem.buffer);
},
// func nanotime1() int64
"runtime.nanotime1": (sp) => {
sp >>>= 0;
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
},
// func walltime() (sec int64, nsec int32)
"runtime.walltime": (sp) => {
sp >>>= 0;
const msec = (new Date).getTime();
setInt64(sp + 8, msec / 1000);
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
},
// func scheduleTimeoutEvent(delay int64) int32
"runtime.scheduleTimeoutEvent": (sp) => {
sp >>>= 0;
const id = this._nextCallbackTimeoutID;
this._nextCallbackTimeoutID++;
this._scheduledTimeouts.set(id, setTimeout(
() => {
this._resume();
while (this._scheduledTimeouts.has(id)) {
// for some reason Go failed to register the timeout event, log and try again
// (temporary workaround for https://github.com/golang/go/issues/28975)
console.warn("scheduleTimeoutEvent: missed timeout event");
this._resume();
}
},
getInt64(sp + 8),
));
this.mem.setInt32(sp + 16, id, true);
},
// func clearTimeoutEvent(id int32)
"runtime.clearTimeoutEvent": (sp) => {
sp >>>= 0;
const id = this.mem.getInt32(sp + 8, true);
clearTimeout(this._scheduledTimeouts.get(id));
this._scheduledTimeouts.delete(id);
},
// func getRandomData(r []byte)
"runtime.getRandomData": (sp) => {
sp >>>= 0;
crypto.getRandomValues(loadSlice(sp + 8));
}, },
// func finalizeRef(v ref) // func finalizeRef(v ref)
"syscall/js.finalizeRef": (sp) => { "syscall/js.finalizeRef": (v_ref) => {
sp >>>= 0; // Note: TinyGo does not support finalizers so this should never be
const id = this.mem.getUint32(sp + 8, true); // called.
this._goRefCounts[id]--;
if (this._goRefCounts[id] === 0) {
const v = this._values[id];
this._values[id] = null;
this._ids.delete(v);
this._idPool.push(id);
}
}, },
// func stringVal(value string) ref // func stringVal(value string) ref
"syscall/js.stringVal": (sp) => { "syscall/js.stringVal": (value_ptr, value_len) => {
sp >>>= 0; const s = loadString(value_ptr, value_len);
storeValue(sp + 24, loadString(sp + 8)); return boxValue(s);
}, },
// func valueGet(v ref, p string) ref // func valueGet(v ref, p string) ref
"syscall/js.valueGet": (sp) => { "syscall/js.valueGet": (v_ref, p_ptr, p_len) => {
sp >>>= 0; let prop = loadString(p_ptr, p_len);
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); let v = unboxValue(v_ref);
sp = this._inst.exports.getsp() >>> 0; // see comment above let result = Reflect.get(v, prop);
storeValue(sp + 32, result); return boxValue(result);
}, },
// func valueSet(v ref, p string, x ref) // func valueSet(v ref, p string, x ref)
"syscall/js.valueSet": (sp) => { "syscall/js.valueSet": (v_ref, p_ptr, p_len, x_ref) => {
sp >>>= 0; const v = unboxValue(v_ref);
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); const p = loadString(p_ptr, p_len);
const x = unboxValue(x_ref);
Reflect.set(v, p, x);
}, },
// func valueDelete(v ref, p string) // func valueDelete(v ref, p string)
"syscall/js.valueDelete": (sp) => { "syscall/js.valueDelete": (v_ref, p_ptr, p_len) => {
sp >>>= 0; const v = unboxValue(v_ref);
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16)); const p = loadString(p_ptr, p_len);
Reflect.deleteProperty(v, p);
}, },
// func valueIndex(v ref, i int) ref // func valueIndex(v ref, i int) ref
"syscall/js.valueIndex": (sp) => { "syscall/js.valueIndex": (v_ref, i) => {
sp >>>= 0; return boxValue(Reflect.get(unboxValue(v_ref), i));
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
}, },
// valueSetIndex(v ref, i int, x ref) // valueSetIndex(v ref, i int, x ref)
"syscall/js.valueSetIndex": (sp) => { "syscall/js.valueSetIndex": (v_ref, i, x_ref) => {
sp >>>= 0; Reflect.set(unboxValue(v_ref), i, unboxValue(x_ref));
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
}, },
// func valueCall(v ref, m string, args []ref) (ref, bool) // func valueCall(v ref, m string, args []ref) (ref, bool)
"syscall/js.valueCall": (sp) => { "syscall/js.valueCall": (ret_addr, v_ref, m_ptr, m_len, args_ptr, args_len, args_cap) => {
sp >>>= 0; const v = unboxValue(v_ref);
const name = loadString(m_ptr, m_len);
const args = loadSliceOfValues(args_ptr, args_len, args_cap);
try { try {
const v = loadValue(sp + 8); const m = Reflect.get(v, name);
const m = Reflect.get(v, loadString(sp + 16)); storeValue(ret_addr, Reflect.apply(m, v, args));
const args = loadSliceOfValues(sp + 32); mem().setUint8(ret_addr + 8, 1);
const result = Reflect.apply(m, v, args);
sp = this._inst.exports.getsp() >>> 0; // see comment above
storeValue(sp + 56, result);
this.mem.setUint8(sp + 64, 1);
} catch (err) { } catch (err) {
sp = this._inst.exports.getsp() >>> 0; // see comment above storeValue(ret_addr, err);
storeValue(sp + 56, err); mem().setUint8(ret_addr + 8, 0);
this.mem.setUint8(sp + 64, 0);
} }
}, },
// func valueInvoke(v ref, args []ref) (ref, bool) // func valueInvoke(v ref, args []ref) (ref, bool)
"syscall/js.valueInvoke": (sp) => { "syscall/js.valueInvoke": (ret_addr, v_ref, args_ptr, args_len, args_cap) => {
sp >>>= 0;
try { try {
const v = loadValue(sp + 8); const v = unboxValue(v_ref);
const args = loadSliceOfValues(sp + 16); const args = loadSliceOfValues(args_ptr, args_len, args_cap);
const result = Reflect.apply(v, undefined, args); storeValue(ret_addr, Reflect.apply(v, undefined, args));
sp = this._inst.exports.getsp() >>> 0; // see comment above mem().setUint8(ret_addr + 8, 1);
storeValue(sp + 40, result);
this.mem.setUint8(sp + 48, 1);
} catch (err) { } catch (err) {
sp = this._inst.exports.getsp() >>> 0; // see comment above storeValue(ret_addr, err);
storeValue(sp + 40, err); mem().setUint8(ret_addr + 8, 0);
this.mem.setUint8(sp + 48, 0);
} }
}, },
// func valueNew(v ref, args []ref) (ref, bool) // func valueNew(v ref, args []ref) (ref, bool)
"syscall/js.valueNew": (sp) => { "syscall/js.valueNew": (ret_addr, v_ref, args_ptr, args_len, args_cap) => {
sp >>>= 0; const v = unboxValue(v_ref);
const args = loadSliceOfValues(args_ptr, args_len, args_cap);
try { try {
const v = loadValue(sp + 8); storeValue(ret_addr, Reflect.construct(v, args));
const args = loadSliceOfValues(sp + 16); mem().setUint8(ret_addr + 8, 1);
const result = Reflect.construct(v, args);
sp = this._inst.exports.getsp() >>> 0; // see comment above
storeValue(sp + 40, result);
this.mem.setUint8(sp + 48, 1);
} catch (err) { } catch (err) {
sp = this._inst.exports.getsp() >>> 0; // see comment above storeValue(ret_addr, err);
storeValue(sp + 40, err); mem().setUint8(ret_addr + 8, 0);
this.mem.setUint8(sp + 48, 0);
} }
}, },
// func valueLength(v ref) int // func valueLength(v ref) int
"syscall/js.valueLength": (sp) => { "syscall/js.valueLength": (v_ref) => {
sp >>>= 0; return unboxValue(v_ref).length;
setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
}, },
// valuePrepareString(v ref) (ref, int) // valuePrepareString(v ref) (ref, int)
"syscall/js.valuePrepareString": (sp) => { "syscall/js.valuePrepareString": (ret_addr, v_ref) => {
sp >>>= 0; const s = String(unboxValue(v_ref));
const str = encoder.encode(String(loadValue(sp + 8))); const str = encoder.encode(s);
storeValue(sp + 16, str); storeValue(ret_addr, str);
setInt64(sp + 24, str.length); mem().setInt32(ret_addr + 8, str.length, true);
}, },
// valueLoadString(v ref, b []byte) // valueLoadString(v ref, b []byte)
"syscall/js.valueLoadString": (sp) => { "syscall/js.valueLoadString": (v_ref, slice_ptr, slice_len, slice_cap) => {
sp >>>= 0; const str = unboxValue(v_ref);
const str = loadValue(sp + 8); loadSlice(slice_ptr, slice_len, slice_cap).set(str);
loadSlice(sp + 16).set(str);
}, },
// func valueInstanceOf(v ref, t ref) bool // func valueInstanceOf(v ref, t ref) bool
"syscall/js.valueInstanceOf": (sp) => { "syscall/js.valueInstanceOf": (v_ref, t_ref) => {
sp >>>= 0; return unboxValue(v_ref) instanceof unboxValue(t_ref);
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
}, },
// func copyBytesToGo(dst []byte, src ref) (int, bool) // func copyBytesToGo(dst []byte, src ref) (int, bool)
"syscall/js.copyBytesToGo": (sp) => { "syscall/js.copyBytesToGo": (ret_addr, dest_addr, dest_len, dest_cap, src_ref) => {
sp >>>= 0; let num_bytes_copied_addr = ret_addr;
const dst = loadSlice(sp + 8); let returned_status_addr = ret_addr + 4; // Address of returned boolean status variable
const src = loadValue(sp + 32);
const dst = loadSlice(dest_addr, dest_len);
const src = unboxValue(src_ref);
if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) { if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) {
this.mem.setUint8(sp + 48, 0); mem().setUint8(returned_status_addr, 0); // Return "not ok" status
return; return;
} }
const toCopy = src.subarray(0, dst.length); const toCopy = src.subarray(0, dst.length);
dst.set(toCopy); dst.set(toCopy);
setInt64(sp + 40, toCopy.length); mem().setUint32(num_bytes_copied_addr, toCopy.length, true);
this.mem.setUint8(sp + 48, 1); mem().setUint8(returned_status_addr, 1); // Return "ok" status
}, },
// func copyBytesToJS(dst ref, src []byte) (int, bool) // copyBytesToJS(dst ref, src []byte) (int, bool)
"syscall/js.copyBytesToJS": (sp) => { // Originally copied from upstream Go project, then modified:
sp >>>= 0; // https://github.com/golang/go/blob/3f995c3f3b43033013013e6c7ccc93a9b1411ca9/misc/wasm/wasm_exec.js#L404-L416
const dst = loadValue(sp + 8); "syscall/js.copyBytesToJS": (ret_addr, dst_ref, src_addr, src_len, src_cap) => {
const src = loadSlice(sp + 16); let num_bytes_copied_addr = ret_addr;
let returned_status_addr = ret_addr + 4; // Address of returned boolean status variable
const dst = unboxValue(dst_ref);
const src = loadSlice(src_addr, src_len);
if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) { if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) {
this.mem.setUint8(sp + 48, 0); mem().setUint8(returned_status_addr, 0); // Return "not ok" status
return; return;
} }
const toCopy = src.subarray(0, dst.length); const toCopy = src.subarray(0, dst.length);
dst.set(toCopy); dst.set(toCopy);
setInt64(sp + 40, toCopy.length); mem().setUint32(num_bytes_copied_addr, toCopy.length, true);
this.mem.setUint8(sp + 48, 1); mem().setUint8(returned_status_addr, 1); // Return "ok" status
}, },
"debug": (value) => {
console.log(value);
}, },
}
}; };
// Go 1.20 uses 'env'. Go 1.21 uses 'gojs'.
// For compatibility, we use both as long as Go 1.20 is supported.
this.importObject.env = this.importObject.gojs;
} }
async run(instance) { async run(instance) {
if (!(instance instanceof WebAssembly.Instance)) {
throw new Error("Go.run: WebAssembly.Instance expected");
}
this._inst = instance; this._inst = instance;
this.mem = new DataView(this._inst.exports.mem.buffer); this._values = [
this._values = [ // JS values that Go currently has references to, indexed by reference id // JS values that Go currently has references to, indexed by reference id
NaN, NaN,
0, 0,
null, null,
true, true,
false, false,
globalThis, global,
this, this,
]; ];
this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id this._goRefCounts = []; // number of references that Go has to a JS value, indexed by reference id
this._ids = new Map([ // mapping from JS values to reference ids this._ids = new Map(); // mapping from JS values to reference ids
[0, 1],
[null, 2],
[true, 3],
[false, 4],
[globalThis, 5],
[this, 6],
]);
this._idPool = []; // unused ids that have been garbage collected this._idPool = []; // unused ids that have been garbage collected
this.exited = false; // whether the Go program has exited this.exited = false; // whether the Go program has exited
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. while (true) {
let offset = 4096; const callbackPromise = new Promise((resolve) => {
this._resolveCallbackPromise = () => {
const strPtr = (str) => { if (this.exited) {
const ptr = offset; throw new Error("bad callback: Go program has already exited");
const bytes = encoder.encode(str + "\0");
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
offset += bytes.length;
if (offset % 8 !== 0) {
offset += 8 - (offset % 8);
} }
return ptr; setTimeout(resolve, 0); // make sure it is asynchronous
}; };
const argc = this.argv.length;
const argvPtrs = [];
this.argv.forEach((arg) => {
argvPtrs.push(strPtr(arg));
});
argvPtrs.push(0);
const keys = Object.keys(this.env).sort();
keys.forEach((key) => {
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
});
argvPtrs.push(0);
const argv = offset;
argvPtrs.forEach((ptr) => {
this.mem.setUint32(offset, ptr, true);
this.mem.setUint32(offset + 4, 0, true);
offset += 8;
}); });
this._inst.exports._start();
// The linker guarantees global data starts from at least wasmMinDataAddr.
// Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr.
const wasmMinDataAddr = 4096 + 8192;
if (offset >= wasmMinDataAddr) {
throw new Error("total length of command line and environment variables exceeds limit");
}
this._inst.exports.run(argc, argv);
if (this.exited) { if (this.exited) {
this._resolveExitPromise(); break;
}
await callbackPromise;
} }
await this._exitPromise;
} }
_resume() { _resume() {
...@@ -557,5 +565,22 @@ ...@@ -557,5 +565,22 @@
return event.result; return event.result;
}; };
} }
};
if (global.require && global.require.main === module && global.process && global.process.versions && !global.process.versions.electron) {
if (process.argv.length != 3) {
console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
process.exit(1);
}
const go = new Go();
WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject)
.then((result) => {
return go.run(result.instance);
})
.catch((err) => {
console.error(err);
process.exit(1);
});
} }
})(); })();
web/src/main.tsx
View file @ ebcf43c9
...@@ -17,8 +17,7 @@ import theme from "./theme"; ...@@ -17,8 +17,7 @@ import theme from "./theme";
(async () => { (async () => {
const go = new window.Go(); const go = new window.Go();
const responsePromise = fetch(gomarkWasm); const { instance } = await WebAssembly.instantiateStreaming(fetch(gomarkWasm), go.importObject);
const { instance } = await WebAssembly.instantiateStreaming(responsePromise, go.importObject);
go.run(instance); go.run(instance);
const container = document.getElementById("root"); const container = document.getElementById("root");
......
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