Implemented specialized stubs for API getters. This includes a number...

src/assembler.cc

Index: src/assembler.cc
===================================================================
--- src/assembler.cc	(revision 3149)
+++ src/assembler.cc	(working copy)
@@ -522,6 +522,10 @@
   : address_(Redirect(Builtins::c_function_address(id))) {}
 
 
+ExternalReference::ExternalReference(ApiFunction* fun)
+  : address_(Redirect(fun->address())) {}
+
+
 ExternalReference::ExternalReference(Builtins::Name name)
   : address_(Builtins::builtin_address(name)) {}
 
@@ -608,6 +612,27 @@
   return ExternalReference(Heap::NewSpaceAllocationLimitAddress());
 }
 
+
+ExternalReference ExternalReference::handle_scope_extensions_address() {
+  return ExternalReference(HandleScope::current_extensions_address());
+}
+
+
+ExternalReference ExternalReference::handle_scope_next_address() {
+  return ExternalReference(HandleScope::current_next_address());
+}
+
+
+ExternalReference ExternalReference::handle_scope_limit_address() {
+  return ExternalReference(HandleScope::current_limit_address());
+}
+
+
+ExternalReference ExternalReference::scheduled_exception_address() {
+  return ExternalReference(Top::scheduled_exception_address());
+}
+
+
 #ifdef V8_NATIVE_REGEXP
 
 ExternalReference ExternalReference::re_check_stack_guard_state() {