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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-sharedarraybuffer
function Module(stdlib, foreign, heap) {
"use asm";
var MEM8 = new stdlib.Int8Array(heap);
var MEM16 = new stdlib.Int16Array(heap);
var MEM32 = new stdlib.Int32Array(heap);
var MEMU8 = new stdlib.Uint8Array(heap);
var MEMU16 = new stdlib.Uint16Array(heap);
var MEMU32 = new stdlib.Uint32Array(heap);
var sub = stdlib.Atomics.sub;
var fround = stdlib.Math.fround;
function subi8(i, x) {
i = i | 0;
x = x | 0;
return sub(MEM8, i, x)|0;
}
function subi16(i, x) {
i = i | 0;
x = x | 0;
return sub(MEM16, i, x)|0;
}
function subi32(i, x) {
i = i | 0;
x = x | 0;
return sub(MEM32, i, x)|0;
}
function subu8(i, x) {
i = i | 0;
x = x >>> 0;
return sub(MEMU8, i, x)>>>0;
}
function subu16(i, x) {
i = i | 0;
x = x >>> 0;
return sub(MEMU16, i, x)>>>0;
}
function subu32(i, x) {
i = i | 0;
x = x >>> 0;
return sub(MEMU32, i, x)>>>0;
}
return {
subi8: subi8,
subi16: subi16,
subi32: subi32,
subu8: subu8,
subu16: subu16,
subu32: subu32,
};
}
var sab = new SharedArrayBuffer(16);
var m = Module(this, {}, sab);
function clearArray() {
var ui8 = new Uint8Array(sab);
for (var i = 0; i < sab.byteLength; ++i) {
ui8[i] = 0;
}
}
function testElementType(taConstr, f) {
clearArray();
var ta = new taConstr(sab);
var name = Object.prototype.toString.call(ta);
ta[0] = 30;
assertEquals(30, f(0, 10), name);
assertEquals(20, ta[0]);
assertEquals(20, f(0, 10), name);
assertEquals(10, ta[0]);
// out of bounds
assertEquals(0, f(-1, 0), name);
assertEquals(0, f(ta.length, 0), name);
}
testElementType(Int8Array, m.subi8);
testElementType(Int16Array, m.subi16);
testElementType(Int32Array, m.subi32);
testElementType(Uint8Array, m.subu8);
testElementType(Uint16Array, m.subu16);
testElementType(Uint32Array, m.subu32);
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