+ /** Returns true if the port has implemented certain bit
+ manipulation iCodes (RRC, RLC, SWAP, GETHBIT)
+ */
+ bool (*hasExtBitOp) (int op, int size);
+
+ /** Returns the relative expense of accessing a particular output
+ storage class. Larger values indicate higher expense.
+ */
+ int (*oclsExpense) (struct memmap *oclass);
+