1/*
2 * Copyright (C) 2012 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 LLIntCallLinkInfo_h
27#define LLIntCallLinkInfo_h
28
29#include "JSFunction.h"
30#include "MacroAssemblerCodeRef.h"
31#include <wtf/SentinelLinkedList.h>
32
33namespace JSC {
34
35struct Instruction;
36
37struct LLIntCallLinkInfo : public BasicRawSentinelNode<LLIntCallLinkInfo> {
38    LLIntCallLinkInfo()
39    {
40    }
41
42    ~LLIntCallLinkInfo()
43    {
44        if (isOnList())
45            remove();
46    }
47
48    bool isLinked() { return callee; }
49
50    void unlink()
51    {
52        callee.clear();
53        machineCodeTarget = MacroAssemblerCodePtr();
54        if (isOnList())
55            remove();
56    }
57
58    WriteBarrier<JSFunction> callee;
59    WriteBarrier<JSFunction> lastSeenCallee;
60    MacroAssemblerCodePtr machineCodeTarget;
61};
62
63} // namespace JSC
64
65#endif // LLIntCallLinkInfo_h
66
67