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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // The class 'AssemblerMacros' contains assembler instruction groups that | 4 // The class 'AssemblerMacros' contains assembler instruction groups that |
5 // are used in Dart. | 5 // are used in Dart. |
6 | 6 |
7 #ifndef VM_ASSEMBLER_MACROS_X64_H_ | 7 #ifndef VM_ASSEMBLER_MACROS_X64_H_ |
8 #define VM_ASSEMBLER_MACROS_X64_H_ | 8 #define VM_ASSEMBLER_MACROS_X64_H_ |
9 | 9 |
10 #ifndef VM_ASSEMBLER_MACROS_H_ | 10 #ifndef VM_ASSEMBLER_MACROS_H_ |
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23 | 23 |
24 class AssemblerMacros : public AllStatic { | 24 class AssemblerMacros : public AllStatic { |
25 public: | 25 public: |
26 // Inlined allocation of an instance of class 'cls', code has no runtime | 26 // Inlined allocation of an instance of class 'cls', code has no runtime |
27 // calls. Jump to 'failure' if the instance cannot be allocated here. | 27 // calls. Jump to 'failure' if the instance cannot be allocated here. |
28 // Allocated instance is returned in 'instance_reg'. | 28 // Allocated instance is returned in 'instance_reg'. |
29 // Only the tags field of the object is initialized. | 29 // Only the tags field of the object is initialized. |
30 static void TryAllocate(Assembler* assembler, | 30 static void TryAllocate(Assembler* assembler, |
31 const Class& cls, | 31 const Class& cls, |
32 Label* failure, | 32 Label* failure, |
| 33 bool near_jump, |
33 Register instance_reg); | 34 Register instance_reg); |
34 | 35 |
35 // Set up a dart frame on entry with a frame pointer and PC information to | 36 // Set up a dart frame on entry with a frame pointer and PC information to |
36 // enable easy access to the RawInstruction object of code corresponding | 37 // enable easy access to the RawInstruction object of code corresponding |
37 // to this frame. | 38 // to this frame. |
38 // The dart frame layout is as follows: | 39 // The dart frame layout is as follows: |
39 // .... | 40 // .... |
40 // ret PC | 41 // ret PC |
41 // saved RBP <=== RBP | 42 // saved RBP <=== RBP |
42 // pc (used to derive the RawInstruction Object of the dart code) | 43 // pc (used to derive the RawInstruction Object of the dart code) |
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74 // pushq rbp (size is 1 byte) | 75 // pushq rbp (size is 1 byte) |
75 // movq rbp, rsp (size is 3 bytes) | 76 // movq rbp, rsp (size is 3 bytes) |
76 // call L (size is 5 bytes) | 77 // call L (size is 5 bytes) |
77 // L: | 78 // L: |
78 static const intptr_t kOffsetOfSavedPCfromEntrypoint = 9; | 79 static const intptr_t kOffsetOfSavedPCfromEntrypoint = 9; |
79 }; | 80 }; |
80 | 81 |
81 } // namespace dart. | 82 } // namespace dart. |
82 | 83 |
83 #endif // VM_ASSEMBLER_MACROS_X64_H_ | 84 #endif // VM_ASSEMBLER_MACROS_X64_H_ |
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