1/*
2 * Copyright (C) 2016-2019 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#pragma once
27
28#if ENABLE(WEBASSEMBLY)
29
30#include "AbstractModuleRecord.h"
31#include "WasmCreationMode.h"
32#include "WasmModuleInformation.h"
33
34namespace JSC {
35
36class JSWebAssemblyInstance;
37class JSWebAssemblyModule;
38class WebAssemblyFunction;
39
40// Based on the WebAssembly.Instance specification
41// https://github.com/WebAssembly/design/blob/master/JS.md#webassemblyinstance-constructor
42class WebAssemblyModuleRecord final : public AbstractModuleRecord {
43 friend class LLIntOffsetsExtractor;
44public:
45 typedef AbstractModuleRecord Base;
46
47 DECLARE_EXPORT_INFO;
48
49 static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
50 static WebAssemblyModuleRecord* create(JSGlobalObject*, VM&, Structure*, const Identifier&, const Wasm::ModuleInformation&);
51
52 void prepareLink(VM&, JSWebAssemblyInstance*);
53 void link(JSGlobalObject*, JSValue scriptFetcher, JSObject* importObject, Wasm::CreationMode);
54 JS_EXPORT_PRIVATE JSValue evaluate(JSGlobalObject*);
55
56private:
57 WebAssemblyModuleRecord(VM&, Structure*, const Identifier&);
58
59 void finishCreation(JSGlobalObject*, VM&, const Wasm::ModuleInformation&);
60 static void destroy(JSCell*);
61
62 static void visitChildren(JSCell*, SlotVisitor&);
63
64 WriteBarrier<JSWebAssemblyInstance> m_instance;
65 WriteBarrier<JSObject> m_startFunction;
66};
67
68} // namespace JSC
69
70#endif // ENABLE(WEBASSEMBLY)
71