[interpreter] Change interpreter to use an BytecodeArray pointer and and offset.

src/interpreter/interpreter.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/interpreter/interpreter.h"
 
 #include "src/compiler.h"
 #include "src/compiler/interpreter-assembler.h"
 #include "src/factory.h"
 #include "src/interpreter/bytecodes.h"
@@ skipping 10 matching lines @@
 Interpreter::Interpreter(Isolate* isolate) : isolate_(isolate) {}
 
 
 void Interpreter::Initialize(bool create_heap_objects) {
   DCHECK(FLAG_ignition);
   if (create_heap_objects) {
     Zone zone;
     HandleScope scope(isolate_);
     Handle<FixedArray> handler_table = isolate_->factory()->NewFixedArray(
         static_cast<int>(Bytecode::kLast) + 1, TENURED);
+    // We rely on the interpreter handler table being immovable, so check that
+    // it was allocated on the first page (which is always immovable).
+    DCHECK(isolate_->heap()->old_space()->FirstPage()->Contains(
+        handler_table->address()));
     isolate_->heap()->public_set_interpreter_table(*handler_table);
 
 #define GENERATE_CODE(Name, _)                                         \
     {                                                                  \
       compiler::InterpreterAssembler assembler(isolate_, &zone,        \
                                                Bytecode::k##Name);     \
       Do##Name(&assembler);                                            \
       Handle<Code> code = assembler.GenerateCode();                    \
       handler_table->set(static_cast<int>(Bytecode::k##Name), *code);  \
     }
@@ skipping 14 matching lines @@
 
 // Return the value in register 0.
 void Interpreter::DoReturn(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Jump to exit trampoline.
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8