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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_IA32_H_ | 7 #ifndef VM_ASSEMBLER_MACROS_IA32_H_ |
8 #define VM_ASSEMBLER_MACROS_IA32_H_ | 8 #define VM_ASSEMBLER_MACROS_IA32_H_ |
9 | 9 |
10 #ifndef VM_ASSEMBLER_MACROS_H_ | 10 #ifndef VM_ASSEMBLER_MACROS_H_ |
11 #error Do not include assembler_macros_ia32.h directly; use assembler_macros.h. | 11 #error Do not include assembler_macros_ia32.h directly; use assembler_macros.h. |
12 #endif | 12 #endif |
13 | 13 |
14 #include "vm/allocation.h" | 14 #include "vm/allocation.h" |
15 #include "vm/constants_ia32.h" | 15 #include "vm/constants_ia32.h" |
16 | 16 |
17 namespace dart { | 17 namespace dart { |
18 | 18 |
19 // Forward declarations. | 19 // Forward declarations. |
20 class Assembler; | 20 class Assembler; |
21 class Class; | 21 class Class; |
22 class Label; | 22 class Label; |
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 // Class must be loaded in 'class_reg'. Allocated instance is returned | 28 // Allocated instance is returned in 'instance_reg'. |
29 // in 'instance_reg'. Only the class field of the object is initialized. | 29 // Only the tags field of the object is initialized. |
30 // 'class_reg' and 'instance_reg' may not be the same register. | |
31 static void TryAllocate(Assembler* assembler, | 30 static void TryAllocate(Assembler* assembler, |
32 const Class& cls, | 31 const Class& cls, |
33 Register class_reg, | |
34 Label* failure, | 32 Label* failure, |
35 Register instance_reg); | 33 Register instance_reg); |
36 | 34 |
37 // Set up a dart frame on entry with a frame pointer and PC information to | 35 // Set up a dart frame on entry with a frame pointer and PC information to |
38 // enable easy access to the RawInstruction object of code corresponding | 36 // enable easy access to the RawInstruction object of code corresponding |
39 // to this frame. | 37 // to this frame. |
40 // The dart frame layout is as follows: | 38 // The dart frame layout is as follows: |
41 // .... | 39 // .... |
42 // ret PC | 40 // ret PC |
43 // saved EBP <=== EBP | 41 // saved EBP <=== EBP |
(...skipping 30 matching lines...) Expand all Loading... |
74 // pushl ebp (size is 1 byte) | 72 // pushl ebp (size is 1 byte) |
75 // movl ebp, esp (size is 2 bytes) | 73 // movl ebp, esp (size is 2 bytes) |
76 // call L (size is 5 bytes) | 74 // call L (size is 5 bytes) |
77 // L: | 75 // L: |
78 static const intptr_t kOffsetOfSavedPCfromEntrypoint = 8; | 76 static const intptr_t kOffsetOfSavedPCfromEntrypoint = 8; |
79 }; | 77 }; |
80 | 78 |
81 } // namespace dart. | 79 } // namespace dart. |
82 | 80 |
83 #endif // VM_ASSEMBLER_MACROS_IA32_H_ | 81 #endif // VM_ASSEMBLER_MACROS_IA32_H_ |
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