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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_IA32_FRAMES_IA32_H_ | 5 #ifndef V8_IA32_FRAMES_IA32_H_ |
| 6 #define V8_IA32_FRAMES_IA32_H_ | 6 #define V8_IA32_FRAMES_IA32_H_ |
| 7 | 7 |
| 8 namespace v8 { | 8 namespace v8 { |
| 9 namespace internal { | 9 namespace internal { |
| 10 | 10 |
| 11 | 11 |
| 12 // Register lists | 12 // Register lists |
| 13 // Note that the bit values must match those used in actual instruction encoding | 13 // Note that the bit values must match those used in actual instruction encoding |
| 14 const int kNumRegs = 8; | 14 const int kNumRegs = 8; |
| 15 | 15 |
| 16 | 16 |
| 17 // Caller-saved registers | 17 // Caller-saved registers |
| 18 const RegList kJSCallerSaved = | 18 const RegList kJSCallerSaved = |
| 19 1 << 0 | // eax | 19 1 << 0 | // eax |
| 20 1 << 1 | // ecx | 20 1 << 1 | // ecx |
| 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 typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved]; | |
| 28 | |
| 29 | 27 |
| 30 // Number of registers for which space is reserved in safepoints. | 28 // Number of registers for which space is reserved in safepoints. |
| 31 const int kNumSafepointRegisters = 8; | 29 const int kNumSafepointRegisters = 8; |
| 32 | 30 |
| 33 const int kNoAlignmentPadding = 0; | 31 const int kNoAlignmentPadding = 0; |
| 34 const int kAlignmentPaddingPushed = 2; | 32 const int kAlignmentPaddingPushed = 2; |
| 35 const int kAlignmentZapValue = 0x12345678; // Not heap object tagged. | 33 const int kAlignmentZapValue = 0x12345678; // Not heap object tagged. |
| 36 | 34 |
| 37 // ---------------------------------------------------- | 35 // ---------------------------------------------------- |
| 38 | 36 |
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| 118 | 116 |
| 119 | 117 |
| 120 inline void StackHandler::SetFp(Address slot, Address fp) { | 118 inline void StackHandler::SetFp(Address slot, Address fp) { |
| 121 Memory::Address_at(slot) = fp; | 119 Memory::Address_at(slot) = fp; |
| 122 } | 120 } |
| 123 | 121 |
| 124 | 122 |
| 125 } } // namespace v8::internal | 123 } } // namespace v8::internal |
| 126 | 124 |
| 127 #endif // V8_IA32_FRAMES_IA32_H_ | 125 #endif // V8_IA32_FRAMES_IA32_H_ |
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