--- sys/arm/include/gdb_machdep.h	(revision 367806)
+++ sys/arm/include/gdb_machdep.h	(working copy)
@@ -36,9 +36,14 @@ 
 #define	GDB_REG_PC	15
 
 static __inline size_t
-gdb_cpu_regsz(int regnum __unused)
+gdb_cpu_regsz(int regnum)
 {
-	return (sizeof(int));
+	/*
+	 * GDB expects the FPA registers f0-f7 each 96-bit long placed between
+	 * the PC and the CPSR in a response to the "g" packet.
+	 */
+	return ((regnum > 15) && (regnum < 24))
+	    ? ((size_t) 12) : (sizeof(int));
 }
 
 static __inline int