Second step in allocating objects in generated code on ARM

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
===================================================================
--- src/x64/macro-assembler-x64.h	(revision 2828)
+++ src/x64/macro-assembler-x64.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -61,6 +61,18 @@
 };
 
 
+// Flags used for the AllocateObjectInNewSpace functions.
+enum AllocationFlags {
+  // No special flags.
+  NO_ALLOCATION_FLAGS = 0,
+  // Return the pointer to the allocated already tagged as a heap object.
+  TAG_OBJECT = 1 << 0,
+  // The content of the result register already contains the allocation top in
+  // new space.
+  RESULT_CONTAINS_TOP = 1 << 1
+};
+
+
 // MacroAssembler implements a collection of frequently used macros.
 class MacroAssembler: public Assembler {
  public:
@@ -244,7 +256,7 @@
                                 Register result_end,
                                 Register scratch,
                                 Label* gc_required,
-                                bool result_contains_top_on_entry);
+                                AllocationFlags flags);
 
   void AllocateObjectInNewSpace(int header_size,
                                 ScaleFactor element_size,
@@ -253,14 +265,14 @@
                                 Register result_end,
                                 Register scratch,
                                 Label* gc_required,
-                                bool result_contains_top_on_entry);
+                                AllocationFlags flags);
 
   void AllocateObjectInNewSpace(Register object_size,
                                 Register result,
                                 Register result_end,
                                 Register scratch,
                                 Label* gc_required,
-                                bool result_contains_top_on_entry);
+                                AllocationFlags flags);
 
   // Undo allocation in new space. The object passed and objects allocated after
   // it will no longer be allocated. Make sure that no pointers are left to the
@@ -392,7 +404,7 @@
   void LoadAllocationTopHelper(Register result,
                                Register result_end,
                                Register scratch,
-                               bool result_contains_top_on_entry);
+                               AllocationFlags flags);
   void UpdateAllocationTopHelper(Register result_end, Register scratch);
 };