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#pragma once
27
28#if ENABLE(FTL_JIT)
29
30#include "DataFormat.h"
31#include <wtf/PrintStream.h>
32
33namespace JSC { namespace FTL {
34
35struct ExitArgumentRepresentation {
36 DataFormat format;
37 unsigned argument;
38};
39
40class ExitArgument {
41public:
42 ExitArgument()
43 {
44 m_representation.format = DataFormatNone;
45 }
46
47 ExitArgument(DataFormat format, unsigned argument)
48 {
49 m_representation.format = format;
50 m_representation.argument = argument;
51 }
52
53 explicit ExitArgument(ExitArgumentRepresentation representation)
54 {
55 m_representation = representation;
56 }
57
58 bool operator!() const { return m_representation.format == DataFormatNone; }
59
60 DataFormat format() const
61 {
62 ASSERT(*this);
63 return m_representation.format;
64 }
65
66 unsigned argument() const
67 {
68 ASSERT(*this);
69 return m_representation.argument;
70 }
71
72 ExitArgument withFormat(DataFormat format)
73 {
74 return ExitArgument(format, argument());
75 }
76
77 ExitArgumentRepresentation representation() const { return m_representation; }
78
79 void dump(PrintStream&) const;
80
81private:
82 ExitArgumentRepresentation m_representation;
83};
84
85} } // namespace JSC::FTL
86
87#endif // ENABLE(FTL_JIT)
88