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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 // Redistribution and use in source and binary forms, with or without |     2 // Redistribution and use in source and binary forms, with or without | 
|     3 // modification, are permitted provided that the following conditions are |     3 // modification, are permitted provided that the following conditions are | 
|     4 // met: |     4 // met: | 
|     5 // |     5 // | 
|     6 //     * Redistributions of source code must retain the above copyright |     6 //     * Redistributions of source code must retain the above copyright | 
|     7 //       notice, this list of conditions and the following disclaimer. |     7 //       notice, this list of conditions and the following disclaimer. | 
|     8 //     * Redistributions in binary form must reproduce the above |     8 //     * Redistributions in binary form must reproduce the above | 
|     9 //       copyright notice, this list of conditions and the following |     9 //       copyright notice, this list of conditions and the following | 
|    10 //       disclaimer in the documentation and/or other materials provided |    10 //       disclaimer in the documentation and/or other materials provided | 
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|  2288   explicit ProfileEntryHookStub() {} |  2288   explicit ProfileEntryHookStub() {} | 
|  2289  |  2289  | 
|  2290   // The profile entry hook function is not allowed to cause a GC. |  2290   // The profile entry hook function is not allowed to cause a GC. | 
|  2291   virtual bool SometimesSetsUpAFrame() { return false; } |  2291   virtual bool SometimesSetsUpAFrame() { return false; } | 
|  2292  |  2292  | 
|  2293   // Generates a call to the entry hook if it's enabled. |  2293   // Generates a call to the entry hook if it's enabled. | 
|  2294   static void MaybeCallEntryHook(MacroAssembler* masm); |  2294   static void MaybeCallEntryHook(MacroAssembler* masm); | 
|  2295  |  2295  | 
|  2296  private: |  2296  private: | 
|  2297   static void EntryHookTrampoline(intptr_t function, |  2297   static void EntryHookTrampoline(intptr_t function, | 
|  2298                                   intptr_t stack_pointer); |  2298                                   intptr_t stack_pointer, | 
 |  2299                                   Isolate* isolate); | 
|  2299  |  2300  | 
|  2300   Major MajorKey() { return ProfileEntryHook; } |  2301   Major MajorKey() { return ProfileEntryHook; } | 
|  2301   int MinorKey() { return 0; } |  2302   int MinorKey() { return 0; } | 
|  2302  |  2303  | 
|  2303   void Generate(MacroAssembler* masm); |  2304   void Generate(MacroAssembler* masm); | 
|  2304  |  2305  | 
|  2305   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub); |  2306   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub); | 
|  2306 }; |  2307 }; | 
|  2307  |  2308  | 
|  2308 } }  // namespace v8::internal |  2309 } }  // namespace v8::internal | 
|  2309  |  2310  | 
|  2310 #endif  // V8_CODE_STUBS_H_ |  2311 #endif  // V8_CODE_STUBS_H_ | 
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