[interpreter] move the dispatch table off heap.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 33 matching lines @@
 #include "src/base/utils/random-number-generator.h"
 #include "src/builtins.h"
 #include "src/codegen.h"
 #include "src/counters.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/disassembler.h"
 #include "src/execution.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
+#include "src/interpreter/interpreter.h"
 #include "src/ostreams.h"
 #include "src/profiler/cpu-profiler.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/register-configuration.h"
 #include "src/runtime/runtime.h"
 #include "src/simulator.h"  // For flushing instruction cache.
 #include "src/snapshot/serialize.h"
 
@@ skipping 981 matching lines @@
 ExternalReference::ExternalReference(const Runtime::Function* f,
                                      Isolate* isolate)
     : address_(Redirect(isolate, f->entry,
                         BuiltinCallTypeForResultSize(f->result_size))) {}
 
 
 ExternalReference ExternalReference::isolate_address(Isolate* isolate) {
   return ExternalReference(isolate);
 }
 
+ExternalReference ExternalReference::interpreter_dispatch_table_address(
+    Isolate* isolate) {
+  return ExternalReference(isolate->interpreter()->dispatch_table_address());
+}
 
 ExternalReference::ExternalReference(StatsCounter* counter)
   : address_(reinterpret_cast<Address>(counter->GetInternalPointer())) {}
 
 
 ExternalReference::ExternalReference(Isolate::AddressId id, Isolate* isolate)
   : address_(isolate->get_address_from_id(id)) {}
 
 
 ExternalReference::ExternalReference(const SCTableReference& table_ref)
@@ skipping 869 matching lines @@
 
 
 void Assembler::DataAlign(int m) {
   DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
   while ((pc_offset() & (m - 1)) != 0) {
     db(0);
   }
 }
 }  // namespace internal
 }  // namespace v8