Index: kernel/arch/sparc64/include/context.h
===================================================================
--- kernel/arch/sparc64/include/context.h	(revision 30f869d70d89f5bf4ed89a1b5a320c378a6a0860)
+++ kernel/arch/sparc64/include/context.h	(revision 4b2c458c1ae1c1e7d61cae43c278078e533b58cb)
@@ -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