Add CODE_POINTER_ALIGN, use it in Page to align generated code.

src/spaces.h

Index: src/spaces.h
diff --git a/src/spaces.h b/src/spaces.h
index 9ffa9404892aa937e854d4e19ef76e66b0524c98..4db14dfba38bd7fff584c74a5f4598c2b706e054 100644
--- a/src/spaces.h
+++ b/src/spaces.h
@@ -243,8 +243,10 @@ class Page {
   static const int kPageHeaderSize = kPointerSize + kPointerSize + kIntSize +
     kIntSize + kPointerSize;
 
-  // The start offset of the object area in a page.
-  static const int kObjectStartOffset = MAP_POINTER_ALIGN(kPageHeaderSize);
+  // The start offset of the object area in a page. Aligned to both maps and
+  // code alignment to be suitabel for both.

[Vitaly Repeshko, 2010/09/24 15:45:38]

Typo: "suitable". 

+  static const int kObjectStartOffset =
+      CODE_POINTER_ALIGN(MAP_POINTER_ALIGN(kPageHeaderSize));
 
   // Object area size in bytes.
   static const int kObjectAreaSize = kPageSize - kObjectStartOffset;