Implements a new API to set a function entry hook for profiling.

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 55 matching lines @@
   V(ArgumentsAccess)                     \
   V(RegExpConstructResult)               \
   V(NumberToString)                      \
   V(CEntry)                              \
   V(JSEntry)                             \
   V(KeyedLoadElement)                    \
   V(KeyedStoreElement)                   \
   V(DebuggerStatement)                   \
   V(StringDictionaryLookup)              \
   V(ElementsTransitionAndStore)          \
-  V(StoreArrayLiteralElement)
+  V(StoreArrayLiteralElement)            \
+  V(ProfileEntryHook)
 
 // List of code stubs only used on ARM platforms.
 #ifdef V8_TARGET_ARCH_ARM
 #define CODE_STUB_LIST_ARM(V)  \
   V(GetProperty)               \
   V(SetProperty)               \
   V(InvokeBuiltin)             \
   V(RegExpCEntry)              \
   V(DirectCEntry)
 #else
@@ skipping 1050 matching lines @@
   explicit StoreArrayLiteralElementStub() {}
 
  private:
   Major MajorKey() { return StoreArrayLiteralElement; }
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
 
   DISALLOW_COPY_AND_ASSIGN(StoreArrayLiteralElementStub);
 };
 

[danno, 2012/07/10 09:37:13]

Two empty lines between classes

[Sigurður Ásgeirsson, 2012/07/11 14:50:34]

Done.

+class ProfileEntryHookStub : public CodeStub {
+ public:
+  explicit ProfileEntryHookStub() {}
+
+  static void GenerateAheadOfTime();
+  // DO NOT SUBMIT.
+  virtual bool SometimesSetsUpAFrame() { return false; }
+
+ private:
+  Major MajorKey() { return ProfileEntryHook; }
+  int MinorKey() { return 0; }
+
+  void Generate(MacroAssembler* masm);
+
+  DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub);
+};
+
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_