F1stBit            73 arch/arm/mach-pxa/include/mach/bitfield.h #define F1stBit(Field)	(UData (1) << FShft (Field))
F1stBit            72 arch/arm/mach-sa1100/include/mach/bitfield.h #define F1stBit(Field)	(UData (1) << FShft (Field))
F1stBit            12 drivers/video/fbdev/mbx/reg_bits.h #define F1stBit(Field)	(UData (1) << FShft (Field))