Initial support for count-based profiling

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 78ff554fdb6d187b14ca4c3b5829b5ad2242f3d6..1bec7195c39251ee38003b1e72d7a47c38818d51 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// 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:
@@ -55,6 +55,7 @@ namespace internal {
   V(ConvertToDouble)                     \
   V(WriteInt32ToHeapNumber)              \
   V(StackCheck)                          \
+  V(Interrupt)                           \
   V(FastNewClosure)                      \
   V(FastNewContext)                      \
   V(FastNewBlockContext)                 \
@@ -297,6 +298,18 @@ class StackCheckStub : public CodeStub {
 };
 
 
+class InterruptStub : public CodeStub {
+ public:
+  InterruptStub() { }
+
+  void Generate(MacroAssembler* masm);
+
+ private:
+  Major MajorKey() { return Interrupt; }
+  int MinorKey() { return 0; }
+};
+
+
 class ToNumberStub: public CodeStub {
  public:
   ToNumberStub() { }