Cardmarking writebarrier.

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 494f2b69261ff3656f295e41e7c0a83694c030e9..a21d2ecd38fcf2f1fd93f3575dd4066c4766fc15 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -114,16 +114,14 @@ class MacroAssembler: public Assembler {
                   Label* branch);
 
 
-  // Set the remebered set bit for an offset into an
-  // object. RecordWriteHelper only works if the object is not in new
-  // space.
+  // For the page containing |object| mark the region covering [object+offset]
+  // dirty. The object address must be in the first 8K of an allocated page.
   void RecordWriteHelper(Register object, Register offset, Register scracth);
 
-  // Sets the remembered set bit for [address+offset], where address is the
-  // address of the heap object 'object'.  The address must be in the first 8K
-  // of an allocated page. The 'scratch' register is used in the
-  // implementation and all 3 registers are clobbered by the operation, as
-  // well as the ip register.
+  // For the page containing |object| mark the region covering [object+offset]
+  // dirty. The object address must be in the first 8K of an allocated page.
+  // The 'scratch' register is used in the implementation and all 3 registers
+  // are clobbered by the operation, as well as the ip register.
   void RecordWrite(Register object, Register offset, Register scratch);
 
   // Push two registers.  Pushes leftmost register first (to highest address).