[runtime] Replace global object link with native context link in all contexts.

src/arm/macro-assembler-arm.h

 // Copyright 2012 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.
 
 #ifndef V8_ARM_MACRO_ASSEMBLER_ARM_H_
 #define V8_ARM_MACRO_ASSEMBLER_ARM_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 590 matching lines @@
   // remove in a register (or no_reg, if there is nothing to remove).
   void LeaveExitFrame(bool save_doubles, Register argument_count,
                       bool restore_context,
                       bool argument_count_is_length = false);
 
   // Get the actual activation frame alignment for target environment.
   static int ActivationFrameAlignment();
 
   void LoadContext(Register dst, int context_chain_length);
 
+  // Load the global object from the current context.
+  void LoadGlobalObject(Register dst) {
+    LoadNativeContextSlot(Context::EXTENSION_INDEX, dst);
+  }
+
   // Load the global proxy from the current context.
-  void LoadGlobalProxy(Register dst);
+  void LoadGlobalProxy(Register dst) {
+    LoadNativeContextSlot(Context::GLOBAL_PROXY_INDEX, dst);
+  }
 
   // Conditionally load the cached Array transitioned map of type
   // transitioned_kind from the native context if the map in register
   // map_in_out is the cached Array map in the native context of
   // expected_kind.
   void LoadTransitionedArrayMapConditional(
       ElementsKind expected_kind,
       ElementsKind transitioned_kind,
       Register map_in_out,
       Register scratch,
       Label* no_map_match);
 
-  void LoadGlobalFunction(int index, Register function);
+  void LoadNativeContextSlot(int index, Register dst);
 
   // Load the initial map from the global function. The registers
   // function and map can be the same, function is then overwritten.
   void LoadGlobalFunctionInitialMap(Register function,
                                     Register map,
                                     Register scratch);
 
   void InitializeRootRegister() {
     ExternalReference roots_array_start =
         ExternalReference::roots_array_start(isolate());
@@ skipping 502 matching lines @@
   void MovFromFloatParameter(DwVfpRegister dst);
   void MovFromFloatResult(DwVfpRegister dst);
 
   // Jump to a runtime routine.
   void JumpToExternalReference(const ExternalReference& builtin);
 
   // Invoke specified builtin JavaScript function.
   void InvokeBuiltin(int native_context_index, InvokeFlag flag,
                      const CallWrapper& call_wrapper = NullCallWrapper());
 
-  // Store the code object for the given builtin in the target register and
-  // setup the function in r1.
-  void GetBuiltinEntry(Register target, int native_context_index);
-
-  // Store the function for the given builtin in the target register.
-  void GetBuiltinFunction(Register target, int native_context_index);
-
   Handle<Object> CodeObject() {
     DCHECK(!code_object_.is_null());
     return code_object_;
   }
 
 
   // Emit code for a truncating division by a constant. The dividend register is
   // unchanged and ip gets clobbered. Dividend and result must be different.
   void TruncatingDiv(Register result, Register dividend, int32_t divisor);
 
@@ skipping 361 matching lines @@
   byte* address_;  // The address of the code being patched.
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
   FlushICache flush_cache_;  // Whether to flush the I cache after patching.
 };
 
 
 // -----------------------------------------------------------------------------
 // Static helper functions.
 
-inline MemOperand ContextOperand(Register context, int index = 0) {
+inline MemOperand ContextMemOperand(Register context, int index = 0) {
   return MemOperand(context, Context::SlotOffset(index));
 }
 
 
-inline MemOperand GlobalObjectOperand()  {
-  return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX);
+inline MemOperand NativeContextMemOperand() {
+  return ContextMemOperand(cp, Context::NATIVE_CONTEXT_INDEX);
 }
 
 
 #ifdef GENERATED_CODE_COVERAGE
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_