+
+This tells the native code generator the size of the spill
+area is has available.
+
+\begin{code}
+rESERVED_C_STACK_BYTES = (RESERVED_C_STACK_BYTES :: Int)
+\end{code}
+
+The amount of (Haskell) stack to leave free for saving registers when
+returning to the scheduler.
+
+\begin{code}
+rESERVED_STACK_WORDS = (RESERVED_STACK_WORDS :: Int)
+\end{code}
+
+Size of a word, in bytes
+
+\begin{code}
+wORD_SIZE = (WORD_SIZE :: Int)
+\end{code}
+
+Size of a storage manager block (in bytes).
+
+\begin{code}
+bLOCK_SIZE = (BLOCK_SIZE :: Int)
+bLOCK_SIZE_W = (bLOCK_SIZE `div` wORD_SIZE :: Int)
+\end{code}