blob: 00ac99d1be8ea64300de67845533216db930d34f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_ARM64_FRAME_CONSTANTS_ARM64_H_
#define V8_ARM64_FRAME_CONSTANTS_ARM64_H_
namespace v8 {
namespace internal {
// The layout of an EntryFrame is as follows:
//
// slot Entry frame
// +---------------------+-----------------------
// 0 | bad frame pointer | <-- frame ptr
// | (0xFFF.. FF) |
// |- - - - - - - - - - -|
// 1 | stack frame marker |
// | (ENTRY) |
// |- - - - - - - - - - -|
// 2 | stack frame marker |
// | (0) |
// |- - - - - - - - - - -|
// 3 | C entry FP |
// |- - - - - - - - - - -|
// 4 | JS entry frame |
// | marker |
// |- - - - - - - - - - -|
// 5 | padding | <-- stack ptr
// -----+---------------------+-----------------------
//
class EntryFrameConstants : public AllStatic {
public:
static const int kCallerFPOffset = -3 * kPointerSize;
static const int kFixedFrameSize = 6 * kPointerSize;
};
class ExitFrameConstants : public TypedFrameConstants {
public:
static const int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0);
static const int kCodeOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(1);
static const int kPaddingOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(2);
DEFINE_TYPED_FRAME_SIZES(3);
static const int kLastExitFrameField = kPaddingOffset;
static const int kConstantPoolOffset = 0; // Not used
};
class JavaScriptFrameConstants : public AllStatic {
public:
// FP-relative.
static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset;
// There are two words on the stack (saved fp and saved lr) between fp and
// the arguments.
static const int kLastParameterOffset = 2 * kPointerSize;
static const int kFunctionOffset = StandardFrameConstants::kFunctionOffset;
};
} // namespace internal
} // namespace v8
#endif // V8_ARM64_FRAME_CONSTANTS_ARM64_H_
|
