STATUS_U_BIT       56 arch/arc/include/asm/arcregs.h #define STATUS_U_MASK		(1<<STATUS_U_BIT)
STATUS_U_BIT      242 arch/arc/include/asm/entry-arcv2.h 	btst	r0, STATUS_U_BIT	; Z flag set if K, used in restoring SP
STATUS_U_BIT       52 arch/arc/include/asm/entry-compact.h 	bbit1   r9, STATUS_U_BIT, 88f