1/*
2 * Copyright (C) 2015-2017 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(B3_JIT)
29
30#include "B3Value.h"
31#include "CCallHelpers.h"
32
33namespace JSC { namespace B3 {
34
35class WasmBoundsCheckValue : public Value {
36public:
37 static bool accepts(Kind kind)
38 {
39 switch (kind.opcode()) {
40 case WasmBoundsCheck:
41 return true;
42 default:
43 return false;
44 }
45 }
46
47 ~WasmBoundsCheckValue();
48
49 enum class Type {
50 Pinned,
51 Maximum,
52 };
53
54 union Bounds {
55 GPRReg pinnedSize;
56 size_t maximum;
57 };
58
59 unsigned offset() const { return m_offset; }
60 Type boundsType() const { return m_boundsType; }
61 Bounds bounds() const { return m_bounds; }
62
63protected:
64 void dumpMeta(CommaPrinter&, PrintStream&) const override;
65
66 Value* cloneImpl() const override;
67
68private:
69 friend class Procedure;
70
71 JS_EXPORT_PRIVATE WasmBoundsCheckValue(Origin, GPRReg pinnedGPR, Value* ptr, unsigned offset);
72 JS_EXPORT_PRIVATE WasmBoundsCheckValue(Origin, Value* ptr, unsigned offset, size_t maximum);
73
74 unsigned m_offset;
75 Type m_boundsType;
76 Bounds m_bounds;
77
78};
79
80} } // namespace JSC::B3
81
82#endif // ENABLE(B3_JIT)
83