1/*
2 * Copyright (C) 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(MASM_PROBE)
29
30#include "CallFrame.h"
31#include "ProbeStack.h"
32
33namespace JSC {
34namespace Probe {
35
36class Frame {
37public:
38 Frame(void* frameBase, Stack& stack)
39 : m_frameBase { reinterpret_cast<uint8_t*>(frameBase) }
40 , m_stack { stack }
41 { }
42
43 template<typename T = JSValue>
44 T argument(int argument)
45 {
46 return get<T>(CallFrame::argumentOffset(argument) * sizeof(Register));
47 }
48 template<typename T = JSValue>
49 T operand(int operand)
50 {
51 return get<T>(static_cast<VirtualRegister>(operand).offset() * sizeof(Register));
52 }
53 template<typename T = JSValue>
54 T operand(int operand, ptrdiff_t offset)
55 {
56 return get<T>(static_cast<VirtualRegister>(operand).offset() * sizeof(Register) + offset);
57 }
58
59 template<typename T>
60 void setArgument(int argument, T value)
61 {
62 return set<T>(CallFrame::argumentOffset(argument) * sizeof(Register), value);
63 }
64 template<typename T>
65 void setOperand(int operand, T value)
66 {
67 set<T>(static_cast<VirtualRegister>(operand).offset() * sizeof(Register), value);
68 }
69 template<typename T>
70 void setOperand(int operand, ptrdiff_t offset, T value)
71 {
72 set<T>(static_cast<VirtualRegister>(operand).offset() * sizeof(Register) + offset, value);
73 }
74
75 template<typename T = JSValue>
76 T get(ptrdiff_t offset)
77 {
78 return m_stack.get<T>(m_frameBase + offset);
79 }
80 template<typename T>
81 void set(ptrdiff_t offset, T value)
82 {
83 m_stack.set<T>(m_frameBase + offset, value);
84 }
85
86private:
87 uint8_t* m_frameBase;
88 Stack& m_stack;
89};
90
91} // namespace Probe
92} // namespace JSC
93
94#endif // ENABLE(MASM_PROBE)
95