Introduce extended mode.

src/mips/code-stubs-mips.cc

 // Copyright 2011 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 82 matching lines @@
   __ pop(a3);
 
   // Attempt to allocate new JSFunction in new space.
   __ AllocateInNewSpace(JSFunction::kSize,
                         v0,
                         a1,
                         a2,
                         &gc,
                         TAG_OBJECT);
 
-  int map_index = strict_mode_ == kStrictMode
-      ? Context::STRICT_MODE_FUNCTION_MAP_INDEX
-      : Context::FUNCTION_MAP_INDEX;
+  int map_index = (language_mode_ == CLASSIC_MODE)
+      ? Context::FUNCTION_MAP_INDEX
+      : Context::STRICT_MODE_FUNCTION_MAP_INDEX;
 
   // Compute the function map in the current global context and set that
   // as the map of the allocated object.
   __ lw(a2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
   __ lw(a2, FieldMemOperand(a2, GlobalObject::kGlobalContextOffset));
   __ lw(a2, MemOperand(a2, Context::SlotOffset(map_index)));
   __ sw(a2, FieldMemOperand(v0, HeapObject::kMapOffset));
 
   // Initialize the rest of the function. We don't have to update the
   // write barrier because the allocated object is in new space.
@@ skipping 7283 matching lines @@
 
   // Fall through when we need to inform the incremental marker.
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS