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 "JSDestructibleObject.h"
31#include "JSObject.h"
32#include "WasmMemoryMode.h"
33#include <wtf/Bag.h>
34#include <wtf/Expected.h>
35#include <wtf/Forward.h>
36#include <wtf/Ref.h>
37#include <wtf/text/WTFString.h>
38
39namespace JSC {
40
41namespace Wasm {
42class Module;
43struct ModuleInformation;
44class Plan;
45using SignatureIndex = uint64_t;
46}
47
48class SymbolTable;
49class JSWebAssemblyCodeBlock;
50class JSWebAssemblyMemory;
51class WebAssemblyToJSCallee;
52
53class JSWebAssemblyModule final : public JSDestructibleObject {
54public:
55 typedef JSDestructibleObject Base;
56
57 DECLARE_EXPORT_INFO;
58
59 JS_EXPORT_PRIVATE static JSWebAssemblyModule* createStub(VM&, ExecState*, Structure*, Expected<RefPtr<Wasm::Module>, String>&&);
60 static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
61
62 const Wasm::ModuleInformation& moduleInformation() const;
63 SymbolTable* exportSymbolTable() const;
64 Wasm::SignatureIndex signatureIndexFromFunctionIndexSpace(unsigned functionIndexSpace) const;
65 WebAssemblyToJSCallee* callee() const;
66
67 JSWebAssemblyCodeBlock* codeBlock(Wasm::MemoryMode mode);
68 void setCodeBlock(VM&, Wasm::MemoryMode, JSWebAssemblyCodeBlock*);
69
70 JS_EXPORT_PRIVATE Wasm::Module& module();
71
72private:
73 friend class JSWebAssemblyCodeBlock;
74
75 JSWebAssemblyModule(VM&, Structure*, Ref<Wasm::Module>&&);
76 void finishCreation(VM&);
77 static void destroy(JSCell*);
78 static void visitChildren(JSCell*, SlotVisitor&);
79
80 Ref<Wasm::Module> m_module;
81 WriteBarrier<SymbolTable> m_exportSymbolTable;
82 WriteBarrier<JSWebAssemblyCodeBlock> m_codeBlocks[Wasm::NumberOfMemoryModes];
83 WriteBarrier<WebAssemblyToJSCallee> m_callee;
84};
85
86} // namespace JSC
87
88#endif // ENABLE(WEBASSEMBLY)
89