1/*
2 * Copyright (C) 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 FTLJITCode_h
27#define FTLJITCode_h
28
29#if ENABLE(FTL_JIT)
30
31#include "DFGCommonData.h"
32#include "FTLDataSection.h"
33#include "FTLOSRExit.h"
34#include "FTLStackMaps.h"
35#include "FTLUnwindInfo.h"
36#include "JITCode.h"
37#include "LLVMAPI.h"
38#include <wtf/RefCountedArray.h>
39
40namespace JSC { namespace FTL {
41
42class JITCode : public JSC::JITCode {
43public:
44    JITCode();
45    ~JITCode();
46
47    CodePtr addressForCall(VM&, ExecutableBase*, ArityCheckMode, RegisterPreservationMode) override;
48    void* executableAddressAtOffset(size_t offset) override;
49    void* dataAddressAtOffset(size_t offset) override;
50    unsigned offsetOf(void* pointerIntoCode) override;
51    size_t size() override;
52    bool contains(void*) override;
53
54    void initializeExitThunks(CodeRef);
55    void addHandle(PassRefPtr<ExecutableMemoryHandle>);
56    void addDataSection(PassRefPtr<DataSection>);
57    void initializeArityCheckEntrypoint(CodeRef);
58    void initializeAddressForCall(CodePtr);
59
60    const Vector<RefPtr<ExecutableMemoryHandle>>& handles() const { return m_handles; }
61    const Vector<RefPtr<DataSection>>& dataSections() const { return m_dataSections; }
62
63    CodePtr exitThunks();
64
65    JITCode* ftl();
66    DFG::CommonData* dfgCommon();
67
68    DFG::CommonData common;
69    SegmentedVector<OSRExit, 8> osrExit;
70    StackMaps stackmaps;
71    UnwindInfo unwindInfo;
72
73private:
74    Vector<RefPtr<DataSection>> m_dataSections;
75    Vector<RefPtr<ExecutableMemoryHandle>> m_handles;
76    CodePtr m_addressForCall;
77    CodeRef m_arityCheckEntrypoint;
78    CodeRef m_exitThunks;
79};
80
81} } // namespace JSC::FTL
82
83#endif // ENABLE(FLT_JIT)
84
85#endif // FTLJITCode_h
86
87