vfp.h
上传用户:szlgq88
上传日期:2009-04-28
资源大小:48287k
文件大小:2k
- /*
- * 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_EXCEPTION (1<<31)
- #define FPEXC_ENABLE (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))