First finished implementation of the condes feature

git-svn-id: svn://svn.cc65.org/cc65/trunk@456 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ld65/expr.h

@@ -40,7 +40,7 @@
 
 /* common */
 #include "exprdefs.h"
-	  
+
 /* ld65 */
 #include "objdata.h"
 #include "exports.h"
@@ -80,6 +80,9 @@ ExprNode* LiteralExpr (long Val, ObjData* O);
 ExprNode* MemExpr (Memory* Mem, long Offs, ObjData* O);
 /* Return an expression tree that encodes an offset into the memory area */
 
+ExprNode* SegExpr (Section* Sec, long Offs, ObjData* O);
+/* Return an expression tree that encodes an offset into a segment */
+
 void DumpExpr (const ExprNode* Expr);
 /* Dump an expression tree to stdout */