1/*
2 * Copyright (C) 2009-2019 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#include "ExecutableBase.h"
29
30namespace JSC {
31
32class NativeExecutable final : public ExecutableBase {
33 friend class JIT;
34 friend class LLIntOffsetsExtractor;
35public:
36 typedef ExecutableBase Base;
37 static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
38
39 static NativeExecutable* create(VM&, Ref<JITCode>&& callThunk, TaggedNativeFunction, Ref<JITCode>&& constructThunk, TaggedNativeFunction constructor, const String& name);
40
41 static void destroy(JSCell*);
42
43 template<typename CellType, SubspaceAccess>
44 static IsoSubspace* subspaceFor(VM& vm)
45 {
46 return &vm.nativeExecutableSpace;
47 }
48
49 CodeBlockHash hashFor(CodeSpecializationKind) const;
50
51 TaggedNativeFunction function() { return m_function; }
52 TaggedNativeFunction constructor() { return m_constructor; }
53
54 TaggedNativeFunction nativeFunctionFor(CodeSpecializationKind kind)
55 {
56 if (kind == CodeForCall)
57 return function();
58 ASSERT(kind == CodeForConstruct);
59 return constructor();
60 }
61
62 static ptrdiff_t offsetOfNativeFunctionFor(CodeSpecializationKind kind)
63 {
64 if (kind == CodeForCall)
65 return OBJECT_OFFSETOF(NativeExecutable, m_function);
66 ASSERT(kind == CodeForConstruct);
67 return OBJECT_OFFSETOF(NativeExecutable, m_constructor);
68 }
69
70 static Structure* createStructure(VM&, JSGlobalObject*, JSValue proto);
71
72 DECLARE_INFO;
73
74 const String& name() const { return m_name; }
75
76 const DOMJIT::Signature* signatureFor(CodeSpecializationKind) const;
77 Intrinsic intrinsic() const;
78
79protected:
80 void finishCreation(VM&, Ref<JITCode>&& callThunk, Ref<JITCode>&& constructThunk, const String& name);
81
82private:
83 NativeExecutable(VM&, TaggedNativeFunction, TaggedNativeFunction constructor);
84
85 TaggedNativeFunction m_function;
86 TaggedNativeFunction m_constructor;
87
88 String m_name;
89};
90
91} // namespace JSC
92