Fix bug restoring of JS entry sp so to fix profiler-related valgrind issues.

src/frames.h

 // Copyright 2006-2008 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 134 matching lines @@
   // Opaque data type for identifying stack frames. Used extensively
   // by the debugger.
   // ID_MIN_VALUE and ID_MAX_VALUE are specified to ensure that enumeration type
   // has correct value range (see Issue 830 for more details).
   enum Id {
     ID_MIN_VALUE = kMinInt,
     ID_MAX_VALUE = kMaxInt,
     NO_ID = 0
   };
 
+  // Used to mark the outermost JS frame.

[Vyacheslav Egorov (Chromium), 2011/05/17 10:54:05]

outermost JS entry frame

[fschneider, 2011/05/17 11:09:17]

Done.

+  enum JsFrameMarker {
+    INNER_JS = 0,

[Vyacheslav Egorov (Chromium), 2011/05/17 10:54:05]

INNER_JSENTRY_FRAME, OUTERMOST_JSENTRY_FRAME?

[fschneider, 2011/05/17 11:09:17]

Done.

+    OUTERMOST_JS = 1
+  };
+
   struct State {
     State() : sp(NULL), fp(NULL), pc_address(NULL) { }
     Address sp;
     Address fp;
     Address* pc_address;
   };
 
   // Copy constructor; it breaks the connection to host iterator
   // (as an iterator usually lives on stack).
   StackFrame(const StackFrame& original) {
@@ skipping 690 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap();
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_