1/*
2 * Copyright (C) 2011 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 DFGOSREntry_h
27#define DFGOSREntry_h
28
29#include "DFGAbstractValue.h"
30#include "Operands.h"
31#include <wtf/BitVector.h>
32
33namespace JSC {
34
35class ExecState;
36class CodeBlock;
37
38namespace DFG {
39
40#if ENABLE(DFG_JIT)
41struct OSREntryData {
42    unsigned m_bytecodeIndex;
43    unsigned m_machineCodeOffset;
44    Operands<AbstractValue> m_expectedValues;
45    BitVector m_localsForcedDouble;
46};
47
48inline unsigned getOSREntryDataBytecodeIndex(OSREntryData* osrEntryData)
49{
50    return osrEntryData->m_bytecodeIndex;
51}
52
53void* prepareOSREntry(ExecState*, CodeBlock*, unsigned bytecodeIndex);
54#else
55inline void* prepareOSREntry(ExecState*, CodeBlock*, unsigned) { return 0; }
56#endif
57
58} } // namespace JSC::DFG
59
60#endif // DFGOSREntry_h
61
62