Index: kernel/arch/sparc64/include/context.h
===================================================================
--- kernel/arch/sparc64/include/context.h	(revision ac47b7c2b6e75a9b9aa60b443fca9a151cf89e5c)
+++ kernel/arch/sparc64/include/context.h	(revision 716fb9d713ceb210b9824bd965bbd54b4a054b9f)
@@ -40,5 +40,5 @@
 #include <align.h>
 
-#define SP_DELTA	STACK_WINDOW_SAVE_AREA_SIZE
+#define SP_DELTA	(STACK_WINDOW_SAVE_AREA_SIZE + STACK_ARG_SAVE_AREA_SIZE)
 
 #ifdef context_set