📄 vfp.h

📁 linux 内核源代码
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/* * linux/include/asm-arm/vfp.h * * VFP register definitions. * First, the standard VFP set. */#define FPSID			cr0#define FPSCR			cr1#define FPEXC			cr8/* FPSID bits */#define FPSID_IMPLEMENTER_BIT	(24)#define FPSID_IMPLEMENTER_MASK	(0xff << FPSID_IMPLEMENTER_BIT)#define FPSID_SOFTWARE		(1<<23)#define FPSID_FORMAT_BIT	(21)#define FPSID_FORMAT_MASK	(0x3  << FPSID_FORMAT_BIT)#define FPSID_NODOUBLE		(1<<20)#define FPSID_ARCH_BIT		(16)#define FPSID_ARCH_MASK		(0xF  << FPSID_ARCH_BIT)#define FPSID_PART_BIT		(8)#define FPSID_PART_MASK		(0xFF << FPSID_PART_BIT)#define FPSID_VARIANT_BIT	(4)#define FPSID_VARIANT_MASK	(0xF  << FPSID_VARIANT_BIT)#define FPSID_REV_BIT		(0)#define FPSID_REV_MASK		(0xF  << FPSID_REV_BIT)/* FPEXC bits */#define FPEXC_EX		(1 << 31)#define FPEXC_EN		(1 << 30)/* FPSCR bits */#define FPSCR_DEFAULT_NAN	(1<<25)#define FPSCR_FLUSHTOZERO	(1<<24)#define FPSCR_ROUND_NEAREST	(0<<22)#define FPSCR_ROUND_PLUSINF	(1<<22)#define FPSCR_ROUND_MINUSINF	(2<<22)#define FPSCR_ROUND_TOZERO	(3<<22)#define FPSCR_RMODE_BIT		(22)#define FPSCR_RMODE_MASK	(3 << FPSCR_RMODE_BIT)#define FPSCR_STRIDE_BIT	(20)#define FPSCR_STRIDE_MASK	(3 << FPSCR_STRIDE_BIT)#define FPSCR_LENGTH_BIT	(16)#define FPSCR_LENGTH_MASK	(7 << FPSCR_LENGTH_BIT)#define FPSCR_IOE		(1<<8)#define FPSCR_DZE		(1<<9)#define FPSCR_OFE		(1<<10)#define FPSCR_UFE		(1<<11)#define FPSCR_IXE		(1<<12)#define FPSCR_IDE		(1<<15)#define FPSCR_IOC		(1<<0)#define FPSCR_DZC		(1<<1)#define FPSCR_OFC		(1<<2)#define FPSCR_UFC		(1<<3)#define FPSCR_IXC		(1<<4)#define FPSCR_IDC		(1<<7)/* * VFP9-S specific. */#define FPINST			cr9#define FPINST2			cr10/* FPEXC bits */#define FPEXC_FPV2		(1<<28)#define FPEXC_LENGTH_BIT	(8)#define FPEXC_LENGTH_MASK	(7 << FPEXC_LENGTH_BIT)#define FPEXC_INV		(1 << 7)#define FPEXC_UFC		(1 << 3)#define FPEXC_OFC		(1 << 2)#define FPEXC_IOC		(1 << 0)/* Bit patterns for decoding the packaged operation descriptors */#define VFPOPDESC_LENGTH_BIT	(9)#define VFPOPDESC_LENGTH_MASK	(0x07 << VFPOPDESC_LENGTH_BIT)#define VFPOPDESC_UNUSED_BIT	(24)#define VFPOPDESC_UNUSED_MASK	(0xFF << VFPOPDESC_UNUSED_BIT)#define VFPOPDESC_OPDESC_MASK	(~(VFPOPDESC_LENGTH_MASK | VFPOPDESC_UNUSED_MASK))
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