1/*
2 * Copyright (C) 2013-2018 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(FTL_JIT)
29
30#include "B3OpaqueByproducts.h"
31#include "DFGCommonData.h"
32#include "FTLLazySlowPath.h"
33#include "FTLOSRExit.h"
34#include "JITCode.h"
35
36namespace JSC {
37
38class TrackedReferences;
39
40namespace FTL {
41
42class JITCode : public JSC::JITCode {
43public:
44 JITCode();
45 ~JITCode();
46
47 CodePtr<JSEntryPtrTag> addressForCall(ArityCheckMode) 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 initializeB3Code(CodeRef<JSEntryPtrTag>);
55 void initializeB3Byproducts(std::unique_ptr<B3::OpaqueByproducts>);
56 void initializeAddressForCall(CodePtr<JSEntryPtrTag>);
57 void initializeArityCheckEntrypoint(CodeRef<JSEntryPtrTag>);
58
59 void validateReferences(const TrackedReferences&) override;
60
61 RegisterSet liveRegistersToPreserveAtExceptionHandlingCallSite(CodeBlock*, CallSiteIndex) override;
62
63 Optional<CodeOrigin> findPC(CodeBlock*, void* pc) override;
64
65 CodeRef<JSEntryPtrTag> b3Code() const { return m_b3Code; }
66
67 JITCode* ftl() override;
68 DFG::CommonData* dfgCommon() override;
69 static ptrdiff_t commonDataOffset() { return OBJECT_OFFSETOF(JITCode, common); }
70
71 DFG::CommonData common;
72 SegmentedVector<OSRExit, 8> osrExit;
73 SegmentedVector<OSRExitDescriptor, 8> osrExitDescriptors;
74 Vector<std::unique_ptr<LazySlowPath>> lazySlowPaths;
75
76private:
77 CodePtr<JSEntryPtrTag> m_addressForCall;
78 CodeRef<JSEntryPtrTag> m_b3Code;
79 std::unique_ptr<B3::OpaqueByproducts> m_b3Byproducts;
80 CodeRef<JSEntryPtrTag> m_arityCheckEntrypoint;
81};
82
83} } // namespace JSC::FTL
84
85#endif // ENABLE(FTL_JIT)
86