this._scheduledTimeouts = new Map();
this._nextCallbackTimeoutID = 1;
- const mem = () => {
- // The buffer may change when requesting more memory.
- return new DataView(this._inst.exports.mem.buffer);
- }
-
const setInt64 = (addr, v) => {
- mem().setUint32(addr + 0, v, true);
- mem().setUint32(addr + 4, Math.floor(v / 4294967296), true);
+ this.mem.setUint32(addr + 0, v, true);
+ this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
}
const getInt64 = (addr) => {
- const low = mem().getUint32(addr + 0, true);
- const high = mem().getInt32(addr + 4, true);
+ const low = this.mem.getUint32(addr + 0, true);
+ const high = this.mem.getInt32(addr + 4, true);
return low + high * 4294967296;
}
const loadValue = (addr) => {
- const f = mem().getFloat64(addr, true);
+ const f = this.mem.getFloat64(addr, true);
if (f === 0) {
return undefined;
}
return f;
}
- const id = mem().getUint32(addr, true);
+ const id = this.mem.getUint32(addr, true);
return this._values[id];
}
if (typeof v === "number") {
if (isNaN(v)) {
- mem().setUint32(addr + 4, nanHead, true);
- mem().setUint32(addr, 0, true);
+ this.mem.setUint32(addr + 4, nanHead, true);
+ this.mem.setUint32(addr, 0, true);
return;
}
if (v === 0) {
- mem().setUint32(addr + 4, nanHead, true);
- mem().setUint32(addr, 1, true);
+ this.mem.setUint32(addr + 4, nanHead, true);
+ this.mem.setUint32(addr, 1, true);
return;
}
- mem().setFloat64(addr, v, true);
+ this.mem.setFloat64(addr, v, true);
return;
}
switch (v) {
case undefined:
- mem().setFloat64(addr, 0, true);
+ this.mem.setFloat64(addr, 0, true);
return;
case null:
- mem().setUint32(addr + 4, nanHead, true);
- mem().setUint32(addr, 2, true);
+ this.mem.setUint32(addr + 4, nanHead, true);
+ this.mem.setUint32(addr, 2, true);
return;
case true:
- mem().setUint32(addr + 4, nanHead, true);
- mem().setUint32(addr, 3, true);
+ this.mem.setUint32(addr + 4, nanHead, true);
+ this.mem.setUint32(addr, 3, true);
return;
case false:
- mem().setUint32(addr + 4, nanHead, true);
- mem().setUint32(addr, 4, true);
+ this.mem.setUint32(addr + 4, nanHead, true);
+ this.mem.setUint32(addr, 4, true);
return;
}
typeFlag = 3;
break;
}
- mem().setUint32(addr + 4, nanHead | typeFlag, true);
- mem().setUint32(addr, ref, true);
+ this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
+ this.mem.setUint32(addr, ref, true);
}
const loadSlice = (addr) => {
// func wasmExit(code int32)
"runtime.wasmExit": (sp) => {
- const code = mem().getInt32(sp + 8, true);
+ const code = this.mem.getInt32(sp + 8, true);
this.exited = true;
delete this._inst;
delete this._values;
"runtime.wasmWrite": (sp) => {
const fd = getInt64(sp + 8);
const p = getInt64(sp + 16);
- const n = mem().getInt32(sp + 24, true);
+ 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) => {
+ this.mem = new DataView(this._inst.exports.mem.buffer);
+ },
+
// func nanotime() int64
"runtime.nanotime": (sp) => {
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
"runtime.walltime": (sp) => {
const msec = (new Date).getTime();
setInt64(sp + 8, msec / 1000);
- mem().setInt32(sp + 16, (msec % 1000) * 1000000, true);
+ this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
},
// func scheduleTimeoutEvent(delay int64) int32
},
getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early
));
- mem().setInt32(sp + 16, id, true);
+ this.mem.setInt32(sp + 16, id, true);
},
// func clearTimeoutEvent(id int32)
"runtime.clearTimeoutEvent": (sp) => {
- const id = mem().getInt32(sp + 8, true);
+ const id = this.mem.getInt32(sp + 8, true);
clearTimeout(this._scheduledTimeouts.get(id));
this._scheduledTimeouts.delete(id);
},
const result = Reflect.apply(m, v, args);
sp = this._inst.exports.getsp(); // see comment above
storeValue(sp + 56, result);
- mem().setUint8(sp + 64, 1);
+ this.mem.setUint8(sp + 64, 1);
} catch (err) {
storeValue(sp + 56, err);
- mem().setUint8(sp + 64, 0);
+ this.mem.setUint8(sp + 64, 0);
}
},
const result = Reflect.apply(v, undefined, args);
sp = this._inst.exports.getsp(); // see comment above
storeValue(sp + 40, result);
- mem().setUint8(sp + 48, 1);
+ this.mem.setUint8(sp + 48, 1);
} catch (err) {
storeValue(sp + 40, err);
- mem().setUint8(sp + 48, 0);
+ this.mem.setUint8(sp + 48, 0);
}
},
const result = Reflect.construct(v, args);
sp = this._inst.exports.getsp(); // see comment above
storeValue(sp + 40, result);
- mem().setUint8(sp + 48, 1);
+ this.mem.setUint8(sp + 48, 1);
} catch (err) {
storeValue(sp + 40, err);
- mem().setUint8(sp + 48, 0);
+ this.mem.setUint8(sp + 48, 0);
}
},
// func valueInstanceOf(v ref, t ref) bool
"syscall/js.valueInstanceOf": (sp) => {
- mem().setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
+ this.mem.setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
},
// func copyBytesToGo(dst []byte, src ref) (int, bool)
const dst = loadSlice(sp + 8);
const src = loadValue(sp + 32);
if (!(src instanceof Uint8Array)) {
- mem().setUint8(sp + 48, 0);
+ this.mem.setUint8(sp + 48, 0);
return;
}
const toCopy = src.subarray(0, dst.length);
dst.set(toCopy);
setInt64(sp + 40, toCopy.length);
- mem().setUint8(sp + 48, 1);
+ this.mem.setUint8(sp + 48, 1);
},
// func copyBytesToJS(dst ref, src []byte) (int, bool)
const dst = loadValue(sp + 8);
const src = loadSlice(sp + 16);
if (!(dst instanceof Uint8Array)) {
- mem().setUint8(sp + 48, 0);
+ this.mem.setUint8(sp + 48, 0);
return;
}
const toCopy = src.subarray(0, dst.length);
dst.set(toCopy);
setInt64(sp + 40, toCopy.length);
- mem().setUint8(sp + 48, 1);
+ this.mem.setUint8(sp + 48, 1);
},
"debug": (value) => {
async run(instance) {
this._inst = instance;
+ this.mem = new DataView(this._inst.exports.mem.buffer);
this._values = [ // TODO: garbage collection
NaN,
0,
this._refs = new Map();
this.exited = false;
- const mem = new DataView(this._inst.exports.mem.buffer)
-
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
let offset = 4096;
const strPtr = (str) => {
const ptr = offset;
const bytes = encoder.encode(str + "\0");
- new Uint8Array(mem.buffer, offset, bytes.length).set(bytes);
+ new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
offset += bytes.length;
if (offset % 8 !== 0) {
offset += 8 - (offset % 8);
const argv = offset;
argvPtrs.forEach((ptr) => {
- mem.setUint32(offset, ptr, true);
- mem.setUint32(offset + 4, 0, true);
+ this.mem.setUint32(offset, ptr, true);
+ this.mem.setUint32(offset + 4, 0, true);
offset += 8;
});