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

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 318d6179318b4d462b9fdbf6b9f9640ed58d5098..0fb9f77f3c45bcdd70cf8aadf2967e1ec0eb326a 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -112,13 +112,13 @@
 // -----------------------------------------------------------------------------
 // Static helper functions.
 
-inline MemOperand ContextMemOperand(Register context, int index) {
+inline MemOperand ContextOperand(Register context, int index) {
   return MemOperand(context, Context::SlotOffset(index));
 }
 
 
-inline MemOperand NativeContextMemOperand() {
-  return ContextMemOperand(cp, Context::NATIVE_CONTEXT_INDEX);
+inline MemOperand GlobalObjectOperand()  {
+  return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX);
 }
 
 
@@ -935,15 +935,8 @@
 
   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) {
-    LoadNativeContextSlot(Context::GLOBAL_PROXY_INDEX, dst);
-  }
+  void LoadGlobalProxy(Register dst);
 
   // Conditionally load the cached Array transitioned map of type
   // transitioned_kind from the native context if the map in register
@@ -956,7 +949,7 @@
       Register scratch,
       Label* no_map_match);
 
-  void LoadNativeContextSlot(int index, Register dst);
+  void LoadGlobalFunction(int index, Register function);
 
   // Load the initial map from the global function. The registers
   // function and map can be the same, function is then overwritten.
@@ -1337,6 +1330,13 @@
   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 a1.
+  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);
+
   struct Unresolved {
     int pc;
     uint32_t flags;  // See Bootstrapper::FixupFlags decoders/encoders.