1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* Copyright (C) 2009-2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ExecutableBase.h"
#include "ImplementationVisibility.h"
namespace JSC {
class NativeExecutable final : public ExecutableBase {
friend class JIT;
friend class LLIntOffsetsExtractor;
public:
typedef ExecutableBase Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
static NativeExecutable* create(VM&, Ref<JSC::JITCode>&& callThunk, TaggedNativeFunction, Ref<JSC::JITCode>&& constructThunk, TaggedNativeFunction constructor, ImplementationVisibility, const String& name);
static void destroy(JSCell*);
template<typename CellType, SubspaceAccess>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return &vm.nativeExecutableSpace();
}
CodeBlockHash hashFor(CodeSpecializationKind) const;
TaggedNativeFunction function() const { return m_function; }
TaggedNativeFunction constructor() const { return m_constructor; }
TaggedNativeFunction nativeFunctionFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return function();
ASSERT(kind == CodeForConstruct);
return constructor();
}
static constexpr ptrdiff_t offsetOfNativeFunctionFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return OBJECT_OFFSETOF(NativeExecutable, m_function);
ASSERT(kind == CodeForConstruct);
return OBJECT_OFFSETOF(NativeExecutable, m_constructor);
}
DECLARE_VISIT_CHILDREN;
static Structure* createStructure(VM&, JSGlobalObject*, JSValue proto);
DECLARE_INFO;
const String& name() const { return m_name; }
const DOMJIT::Signature* signatureFor(CodeSpecializationKind) const;
ImplementationVisibility implementationVisibility() const { return static_cast<ImplementationVisibility>(m_implementationVisibility); }
Intrinsic intrinsic() const;
JSString* toString(JSGlobalObject* globalObject)
{
if (!m_asString)
return toStringSlow(globalObject);
return m_asString.get();
}
JSString* asStringConcurrently() const { return m_asString.get(); }
static constexpr ptrdiff_t offsetOfAsString() { return OBJECT_OFFSETOF(NativeExecutable, m_asString); }
private:
NativeExecutable(VM&, TaggedNativeFunction, TaggedNativeFunction constructor, ImplementationVisibility);
void finishCreation(VM&, Ref<JSC::JITCode>&& callThunk, Ref<JSC::JITCode>&& constructThunk, const String& name);
JSString* toStringSlow(JSGlobalObject*);
TaggedNativeFunction m_function;
TaggedNativeFunction m_constructor;
unsigned m_implementationVisibility : bitWidthOfImplementationVisibility;
String m_name;
WriteBarrier<JSString> m_asString;
};
} // namespace JSC
|
