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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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55 // ----------------------------------------------------------------------------- | 55 // ----------------------------------------------------------------------------- |
56 // Platform independent assembler base class. | 56 // Platform independent assembler base class. |
57 | 57 |
58 class AssemblerBase: public Malloced { | 58 class AssemblerBase: public Malloced { |
59 public: | 59 public: |
60 explicit AssemblerBase(Isolate* isolate); | 60 explicit AssemblerBase(Isolate* isolate); |
61 | 61 |
62 Isolate* isolate() const { return isolate_; } | 62 Isolate* isolate() const { return isolate_; } |
63 int jit_cookie() { return jit_cookie_; } | 63 int jit_cookie() { return jit_cookie_; } |
64 | 64 |
| 65 // Overwrite a host NaN with a quiet target NaN. Used by mksnapshot for |
| 66 // cross-snapshotting. |
| 67 static void QuietNaN(HeapObject* nan) { } |
| 68 |
65 private: | 69 private: |
66 Isolate* isolate_; | 70 Isolate* isolate_; |
67 int jit_cookie_; | 71 int jit_cookie_; |
68 }; | 72 }; |
69 | 73 |
70 | 74 |
71 // ----------------------------------------------------------------------------- | 75 // ----------------------------------------------------------------------------- |
72 // Labels represent pc locations; they are typically jump or call targets. | 76 // Labels represent pc locations; they are typically jump or call targets. |
73 // After declaration, a label can be freely used to denote known or (yet) | 77 // After declaration, a label can be freely used to denote known or (yet) |
74 // unknown pc location. Assembler::bind() is used to bind a label to the | 78 // unknown pc location. Assembler::bind() is used to bind a label to the |
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872 public: | 876 public: |
873 NullCallWrapper() { } | 877 NullCallWrapper() { } |
874 virtual ~NullCallWrapper() { } | 878 virtual ~NullCallWrapper() { } |
875 virtual void BeforeCall(int call_size) const { } | 879 virtual void BeforeCall(int call_size) const { } |
876 virtual void AfterCall() const { } | 880 virtual void AfterCall() const { } |
877 }; | 881 }; |
878 | 882 |
879 } } // namespace v8::internal | 883 } } // namespace v8::internal |
880 | 884 |
881 #endif // V8_ASSEMBLER_H_ | 885 #endif // V8_ASSEMBLER_H_ |
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