X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fvm%2Fvftbl.hpp;fp=src%2Fvm%2Fvftbl.hpp;h=6f5bed5f53fb5fd41b929e675f5fa8e4496371c9;hb=56fa24a4902f1e71f5d057487097f9438222f4b9;hp=ace6dc7346ee4fde35288c2fdc5e675b66524d29;hpb=cf3b4b938bfdbd119c007424ba40c40fedcdaac2;p=cacao.git

diff --git a/src/vm/vftbl.hpp b/src/vm/vftbl.hpp
index ace6dc734..6f5bed5f5 100644
--- a/src/vm/vftbl.hpp
+++ b/src/vm/vftbl.hpp
@@ -94,6 +94,8 @@ typedef struct _vftbl vftbl_t;
 #include "vm/class.hpp"
 #include "vm/references.h"
 
+#define DISPLAY_SIZE 4
+
 struct _vftbl {
 	methodptr   *interfacetable[1];    /* interface table (access via macro)  */
 	classinfo   *clazz;                /* class, the vtbl belongs to          */
@@ -103,6 +105,12 @@ struct _vftbl {
 	s4           baseval;              /* base for runtime type check         */
 	                                   /* (-index for interfaces)             */
 	s4           diffval;              /* high - base for runtime type check  */
+
+	s4 subtype_depth;
+	s4 subtype_offset;
+	struct _vftbl *subtype_display[DISPLAY_SIZE+1];  /* the last one is cache */
+	struct _vftbl **subtype_overflow;
+
 	s4          *interfacevftbllength; /* length of interface vftbls          */
 	methodptr    table[1];             /* class vftbl                         */
 };