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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_X87_FRAMES_X87_H_ | 5 #ifndef V8_X87_FRAMES_X87_H_ |
6 #define V8_X87_FRAMES_X87_H_ | 6 #define V8_X87_FRAMES_X87_H_ |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
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21 1 << 2 | // edx | 21 1 << 2 | // edx |
22 1 << 3 | // ebx - used as a caller-saved register in JavaScript code | 22 1 << 3 | // ebx - used as a caller-saved register in JavaScript code |
23 1 << 7; // edi - callee function | 23 1 << 7; // edi - callee function |
24 | 24 |
25 const int kNumJSCallerSaved = 5; | 25 const int kNumJSCallerSaved = 5; |
26 | 26 |
27 | 27 |
28 // Number of registers for which space is reserved in safepoints. | 28 // Number of registers for which space is reserved in safepoints. |
29 const int kNumSafepointRegisters = 8; | 29 const int kNumSafepointRegisters = 8; |
30 | 30 |
31 const int kNoAlignmentPadding = 0; | |
32 const int kAlignmentPaddingPushed = 2; | |
33 const int kAlignmentZapValue = 0x12345678; // Not heap object tagged. | |
34 | |
35 // ---------------------------------------------------- | 31 // ---------------------------------------------------- |
36 | 32 |
37 | 33 |
38 class EntryFrameConstants : public AllStatic { | 34 class EntryFrameConstants : public AllStatic { |
39 public: | 35 public: |
40 static const int kCallerFPOffset = -6 * kPointerSize; | 36 static const int kCallerFPOffset = -6 * kPointerSize; |
41 | 37 |
42 static const int kNewTargetArgOffset = +2 * kPointerSize; | 38 static const int kNewTargetArgOffset = +2 * kPointerSize; |
43 static const int kFunctionArgOffset = +3 * kPointerSize; | 39 static const int kFunctionArgOffset = +3 * kPointerSize; |
44 static const int kReceiverArgOffset = +4 * kPointerSize; | 40 static const int kReceiverArgOffset = +4 * kPointerSize; |
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68 class JavaScriptFrameConstants : public AllStatic { | 64 class JavaScriptFrameConstants : public AllStatic { |
69 public: | 65 public: |
70 // FP-relative. | 66 // FP-relative. |
71 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; | 67 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
72 static const int kLastParameterOffset = +2 * kPointerSize; | 68 static const int kLastParameterOffset = +2 * kPointerSize; |
73 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; | 69 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; |
74 | 70 |
75 // Caller SP-relative. | 71 // Caller SP-relative. |
76 static const int kParam0Offset = -2 * kPointerSize; | 72 static const int kParam0Offset = -2 * kPointerSize; |
77 static const int kReceiverOffset = -1 * kPointerSize; | 73 static const int kReceiverOffset = -1 * kPointerSize; |
78 | |
79 static const int kDynamicAlignmentStateOffset = kLocal0Offset; | |
80 }; | 74 }; |
81 | 75 |
82 | 76 |
83 } // namespace internal | 77 } // namespace internal |
84 } // namespace v8 | 78 } // namespace v8 |
85 | 79 |
86 #endif // V8_X87_FRAMES_X87_H_ | 80 #endif // V8_X87_FRAMES_X87_H_ |
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