1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --harmony-sharedarraybuffer 6 7 function Module(stdlib, foreign, heap, offset) { 8 "use asm"; 9 var MEM8 = new stdlib.Int8Array(heap, offset); 10 var MEM16 = new stdlib.Int16Array(heap, offset); 11 var MEM32 = new stdlib.Int32Array(heap, offset); 12 var MEMU8 = new stdlib.Uint8Array(heap, offset); 13 var MEMU16 = new stdlib.Uint16Array(heap, offset); 14 var MEMU32 = new stdlib.Uint32Array(heap, offset); 15 var store = stdlib.Atomics.store; 16 var fround = stdlib.Math.fround; 17 18 function storei8(i, x) { 19 i = i | 0; 20 x = x | 0; 21 return store(MEM8, i, x)|0; 22 } 23 24 function storei16(i, x) { 25 i = i | 0; 26 x = x | 0; 27 return store(MEM16, i, x)|0; 28 } 29 30 function storei32(i, x) { 31 i = i | 0; 32 x = x | 0; 33 return store(MEM32, i, x)|0; 34 } 35 36 function storeu8(i, x) { 37 i = i | 0; 38 x = x >>> 0; 39 return store(MEMU8, i, x)>>>0; 40 } 41 42 function storeu16(i, x) { 43 i = i | 0; 44 x = x >>> 0; 45 return store(MEMU16, i, x)>>>0; 46 } 47 48 function storeu32(i, x) { 49 i = i | 0; 50 x = x >>> 0; 51 return store(MEMU32, i, x)>>>0; 52 } 53 54 return { 55 storei8: storei8, 56 storei16: storei16, 57 storei32: storei32, 58 storeu8: storeu8, 59 storeu16: storeu16, 60 storeu32: storeu32, 61 }; 62 } 63 64 function clearArray() { 65 var ui8 = new Uint8Array(sab); 66 for (var i = 0; i < sab.byteLength; ++i) { 67 ui8[i] = 0; 68 } 69 } 70 71 function testElementType(taConstr, f, offset) { 72 clearArray(); 73 74 var ta = new taConstr(sab, offset); 75 var name = Object.prototype.toString.call(ta); 76 assertEquals(10, f(0, 10), name); 77 assertEquals(10, ta[0]); 78 // out of bounds 79 assertThrows(function() { f(-1, 0); }); 80 assertThrows(function() { f(ta.length, 0); }); 81 } 82 83 function testElement(m, offset) { 84 testElementType(Int8Array, m.storei8, offset); 85 testElementType(Int16Array, m.storei16, offset); 86 testElementType(Int32Array, m.storei32, offset); 87 testElementType(Uint8Array, m.storeu8, offset); 88 testElementType(Uint16Array, m.storeu16, offset); 89 testElementType(Uint32Array, m.storeu32, offset); 90 } 91 92 var offset = 0; 93 var sab = new SharedArrayBuffer(16); 94 var m1 = Module(this, {}, sab, offset); 95 testElement(m1, offset); 96 97 offset = 32; 98 sab = new SharedArrayBuffer(64); 99 var m2 = Module(this, {}, sab, offset); 100 testElement(m2, offset); 101