1 | /* |
2 | * Copyright (C) 2016-2017 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #include "config.h" |
27 | #include "WebAssemblyMemoryPrototype.h" |
28 | |
29 | #if ENABLE(WEBASSEMBLY) |
30 | |
31 | #include "FunctionPrototype.h" |
32 | #include "JSArrayBuffer.h" |
33 | #include "JSCInlines.h" |
34 | #include "JSWebAssemblyMemory.h" |
35 | #include "JSWebAssemblyHelpers.h" |
36 | |
37 | namespace JSC { |
38 | static EncodedJSValue JSC_HOST_CALL webAssemblyMemoryProtoFuncGrow(ExecState*); |
39 | static EncodedJSValue JSC_HOST_CALL webAssemblyMemoryProtoFuncBuffer(ExecState*); |
40 | } |
41 | |
42 | #include "WebAssemblyMemoryPrototype.lut.h" |
43 | |
44 | |
45 | namespace JSC { |
46 | |
47 | const ClassInfo WebAssemblyMemoryPrototype::s_info = { "WebAssembly.Memory" , &Base::s_info, &prototypeTableWebAssemblyMemory, nullptr, CREATE_METHOD_TABLE(WebAssemblyMemoryPrototype) }; |
48 | |
49 | /* Source for WebAssemblyMemoryPrototype.lut.h |
50 | @begin prototypeTableWebAssemblyMemory |
51 | grow webAssemblyMemoryProtoFuncGrow DontEnum|Function 1 |
52 | buffer webAssemblyMemoryProtoFuncBuffer DontEnum|Accessor 0 |
53 | @end |
54 | */ |
55 | |
56 | ALWAYS_INLINE JSWebAssemblyMemory* getMemory(ExecState* exec, VM& vm, JSValue value) |
57 | { |
58 | auto throwScope = DECLARE_THROW_SCOPE(vm); |
59 | |
60 | JSWebAssemblyMemory* memory = jsDynamicCast<JSWebAssemblyMemory*>(vm, value); |
61 | if (!memory) { |
62 | throwException(exec, throwScope, |
63 | createTypeError(exec, "WebAssembly.Memory.prototype.buffer getter called with non WebAssembly.Memory |this| value"_s )); |
64 | return nullptr; |
65 | } |
66 | return memory; |
67 | } |
68 | |
69 | EncodedJSValue JSC_HOST_CALL webAssemblyMemoryProtoFuncGrow(ExecState* exec) |
70 | { |
71 | VM& vm = exec->vm(); |
72 | auto throwScope = DECLARE_THROW_SCOPE(vm); |
73 | |
74 | JSWebAssemblyMemory* memory = getMemory(exec, vm, exec->thisValue()); |
75 | RETURN_IF_EXCEPTION(throwScope, { }); |
76 | |
77 | uint32_t delta = toNonWrappingUint32(exec, exec->argument(0)); |
78 | RETURN_IF_EXCEPTION(throwScope, { }); |
79 | |
80 | Wasm::PageCount result = memory->grow(vm, exec, delta); |
81 | RETURN_IF_EXCEPTION(throwScope, { }); |
82 | |
83 | return JSValue::encode(jsNumber(result.pageCount())); |
84 | } |
85 | |
86 | EncodedJSValue JSC_HOST_CALL webAssemblyMemoryProtoFuncBuffer(ExecState* exec) |
87 | { |
88 | VM& vm = exec->vm(); |
89 | auto throwScope = DECLARE_THROW_SCOPE(vm); |
90 | |
91 | JSWebAssemblyMemory* memory = getMemory(exec, vm, exec->thisValue()); |
92 | RETURN_IF_EXCEPTION(throwScope, { }); |
93 | return JSValue::encode(memory->buffer(exec->vm(), exec->lexicalGlobalObject())); |
94 | } |
95 | |
96 | WebAssemblyMemoryPrototype* WebAssemblyMemoryPrototype::create(VM& vm, JSGlobalObject*, Structure* structure) |
97 | { |
98 | auto* object = new (NotNull, allocateCell<WebAssemblyMemoryPrototype>(vm.heap)) WebAssemblyMemoryPrototype(vm, structure); |
99 | object->finishCreation(vm); |
100 | return object; |
101 | } |
102 | |
103 | Structure* WebAssemblyMemoryPrototype::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) |
104 | { |
105 | return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info()); |
106 | } |
107 | |
108 | void WebAssemblyMemoryPrototype::finishCreation(VM& vm) |
109 | { |
110 | Base::finishCreation(vm); |
111 | ASSERT(inherits(vm, info())); |
112 | } |
113 | |
114 | WebAssemblyMemoryPrototype::WebAssemblyMemoryPrototype(VM& vm, Structure* structure) |
115 | : Base(vm, structure) |
116 | { |
117 | } |
118 | |
119 | } // namespace JSC |
120 | |
121 | #endif // ENABLE(WEBASSEMBLY) |
122 | |