[interpreter] First implementation of stack unwinding.

src/builtins.h

Index: src/builtins.h
diff --git a/src/builtins.h b/src/builtins.h
index ec47d86c70b6fa48bee1c7a53489ef069ebddfc9..e8af4341ac87facee26f68000dd35e71256f0335 100644
--- a/src/builtins.h
+++ b/src/builtins.h
@@ -197,6 +197,7 @@ inline bool operator&(BuiltinExtraArguments lhs, BuiltinExtraArguments rhs) {
   V(InterpreterNotifyDeoptimized, BUILTIN, UNINITIALIZED, kNoExtraICState)     \
   V(InterpreterNotifySoftDeoptimized, BUILTIN, UNINITIALIZED, kNoExtraICState) \
   V(InterpreterNotifyLazyDeoptimized, BUILTIN, UNINITIALIZED, kNoExtraICState) \
+  V(InterpreterEnterExceptionHandler, BUILTIN, UNINITIALIZED, kNoExtraICState) \
                                                                                \
   V(LoadIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                      \
   V(KeyedLoadIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                 \
@@ -507,6 +508,7 @@ class Builtins {
   static void Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm);
   static void Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm);
   static void Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm);
+  static void Generate_InterpreterEnterExceptionHandler(MacroAssembler* masm);
 
 #define DECLARE_CODE_AGE_BUILTIN_GENERATOR(C)                \
   static void Generate_Make##C##CodeYoungAgainEvenMarking(   \