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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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1152 virtual bool SometimesSetsUpAFrame() { return false; } | 1152 virtual bool SometimesSetsUpAFrame() { return false; } |
1153 | 1153 |
1154 // Generates a call to the entry hook if it's enabled. | 1154 // Generates a call to the entry hook if it's enabled. |
1155 static void MaybeCallEntryHook(MacroAssembler* masm); | 1155 static void MaybeCallEntryHook(MacroAssembler* masm); |
1156 | 1156 |
1157 // Sets or unsets the entry hook function. Returns true on success, | 1157 // Sets or unsets the entry hook function. Returns true on success, |
1158 // false on an attempt to replace a non-NULL entry hook with another | 1158 // false on an attempt to replace a non-NULL entry hook with another |
1159 // non-NULL hook. | 1159 // non-NULL hook. |
1160 static bool SetFunctionEntryHook(FunctionEntryHook entry_hook); | 1160 static bool SetFunctionEntryHook(FunctionEntryHook entry_hook); |
1161 | 1161 |
| 1162 static bool HasEntryHook() { return entry_hook_ != NULL; } |
| 1163 |
1162 private: | 1164 private: |
1163 static void EntryHookTrampoline(intptr_t function, | 1165 static void EntryHookTrampoline(intptr_t function, |
1164 intptr_t stack_pointer); | 1166 intptr_t stack_pointer); |
1165 | 1167 |
1166 Major MajorKey() { return ProfileEntryHook; } | 1168 Major MajorKey() { return ProfileEntryHook; } |
1167 int MinorKey() { return 0; } | 1169 int MinorKey() { return 0; } |
1168 | 1170 |
1169 void Generate(MacroAssembler* masm); | 1171 void Generate(MacroAssembler* masm); |
1170 | 1172 |
1171 // The current function entry hook. | 1173 // The current function entry hook. |
1172 static FunctionEntryHook entry_hook_; | 1174 static FunctionEntryHook entry_hook_; |
1173 | 1175 |
1174 DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub); | 1176 DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub); |
1175 }; | 1177 }; |
1176 | 1178 |
1177 } } // namespace v8::internal | 1179 } } // namespace v8::internal |
1178 | 1180 |
1179 #endif // V8_CODE_STUBS_H_ | 1181 #endif // V8_CODE_STUBS_H_ |
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