1/*
2 * Copyright (C) 2012, 2013 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#ifndef JITThunks_h
27#define JITThunks_h
28
29#if ENABLE(JIT)
30
31#include "CallData.h"
32#include "Intrinsic.h"
33#include "LowLevelInterpreter.h"
34#include "MacroAssemblerCodeRef.h"
35#include "ThunkGenerator.h"
36#include "Weak.h"
37#include "WeakHandleOwner.h"
38#include "WeakInlines.h"
39#include <wtf/HashMap.h>
40#include <wtf/RefPtr.h>
41#include <wtf/ThreadingPrimitives.h>
42
43namespace JSC {
44
45class VM;
46class NativeExecutable;
47
48class JITThunks final : private WeakHandleOwner {
49 WTF_MAKE_FAST_ALLOCATED;
50public:
51 JITThunks();
52 virtual ~JITThunks();
53
54 MacroAssemblerCodePtr ctiNativeCall(VM*);
55 MacroAssemblerCodePtr ctiNativeConstruct(VM*);
56 MacroAssemblerCodePtr ctiNativeTailCall(VM*);
57
58 MacroAssemblerCodeRef ctiStub(VM*, ThunkGenerator);
59
60 NativeExecutable* hostFunctionStub(VM*, NativeFunction, NativeFunction constructor, const String& name);
61 NativeExecutable* hostFunctionStub(VM*, NativeFunction, ThunkGenerator, Intrinsic, const String& name);
62
63 void clearHostFunctionStubs();
64
65private:
66 void finalize(Handle<Unknown>, void* context) override;
67
68 typedef HashMap<ThunkGenerator, MacroAssemblerCodeRef> CTIStubMap;
69 CTIStubMap m_ctiStubMap;
70 typedef HashMap<std::pair<NativeFunction, NativeFunction>, Weak<NativeExecutable>> HostFunctionStubMap;
71 std::unique_ptr<HostFunctionStubMap> m_hostFunctionStubMap;
72 Lock m_lock;
73};
74
75} // namespace JSC
76
77#endif // ENABLE(JIT)
78
79#endif // JITThunks_h
80
81