1/*
2 * Copyright (C) 2014 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 VMEntryRecord_h
27#define VMEntryRecord_h
28
29namespace JSC {
30
31typedef void VMEntryFrame;
32
33class ExecState;
34class VM;
35
36struct VMEntryRecord {
37 /*
38 * This record stored in a vmEntryTo{JavaScript,Host} allocated frame. It is allocated on the stack
39 * after callee save registers where local variables would go.
40 */
41 VM* m_vm;
42 ExecState* m_prevTopCallFrame;
43 VMEntryFrame* m_prevTopVMEntryFrame;
44
45 ExecState* prevTopCallFrame() { return m_prevTopCallFrame; }
46 SUPPRESS_ASAN ExecState* unsafePrevTopCallFrame() { return m_prevTopCallFrame; }
47
48 VMEntryFrame* prevTopVMEntryFrame() { return m_prevTopVMEntryFrame; }
49 SUPPRESS_ASAN VMEntryFrame* unsafePrevTopVMEntryFrame() { return m_prevTopVMEntryFrame; }
50};
51
52extern "C" VMEntryRecord* vmEntryRecord(VMEntryFrame*);
53
54} // namespace JSC
55
56#endif // VMEntryRecord_h
57