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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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1103 | 1103 |
1104 class NullCallWrapper : public CallWrapper { | 1104 class NullCallWrapper : public CallWrapper { |
1105 public: | 1105 public: |
1106 NullCallWrapper() { } | 1106 NullCallWrapper() { } |
1107 virtual ~NullCallWrapper() { } | 1107 virtual ~NullCallWrapper() { } |
1108 virtual void BeforeCall(int call_size) const { } | 1108 virtual void BeforeCall(int call_size) const { } |
1109 virtual void AfterCall() const { } | 1109 virtual void AfterCall() const { } |
1110 }; | 1110 }; |
1111 | 1111 |
1112 | 1112 |
1113 // The multiplier and shift for signed division via multiplication, see Warren's | |
1114 // "Hacker's Delight", chapter 10. | |
1115 class MultiplierAndShift { | |
1116 public: | |
1117 explicit MultiplierAndShift(int32_t d); | |
1118 int32_t multiplier() const { return multiplier_; } | |
1119 int32_t shift() const { return shift_; } | |
1120 | |
1121 private: | |
1122 int32_t multiplier_; | |
1123 int32_t shift_; | |
1124 }; | |
1125 | |
1126 | |
1127 } } // namespace v8::internal | 1113 } } // namespace v8::internal |
1128 | 1114 |
1129 #endif // V8_ASSEMBLER_H_ | 1115 #endif // V8_ASSEMBLER_H_ |
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