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vfp.h

/*
 * arch/arm/include/asm/vfp.h
 *
 * VFP register definitions.
 * First, the standard VFP set.
 */

#define FPSID                 cr0
#define FPSCR                 cr1
#define MVFR1                 cr6
#define MVFR0                 cr7
#define FPEXC                 cr8
#define FPINST                cr9
#define FPINST2               cr10

/* 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)
#define FPEXC_DEX       (1 << 29)
#define FPEXC_FP2V            (1 << 28)
#define FPEXC_VV        (1 << 27)
#define FPEXC_TFV       (1 << 26)
#define FPEXC_LENGTH_BIT      (8)
#define FPEXC_LENGTH_MASK     (7 << FPEXC_LENGTH_BIT)
#define FPEXC_IDF       (1 << 7)
#define FPEXC_IXF       (1 << 4)
#define FPEXC_UFF       (1 << 3)
#define FPEXC_OFF       (1 << 2)
#define FPEXC_DZF       (1 << 1)
#define FPEXC_IOF       (1 << 0)
#define FPEXC_TRAP_MASK       (FPEXC_IDF|FPEXC_IXF|FPEXC_UFF|FPEXC_OFF|FPEXC_DZF|FPEXC_IOF)

/* 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)

/* MVFR0 bits */
#define MVFR0_A_SIMD_BIT      (0)
#define MVFR0_A_SIMD_MASK     (0xf << MVFR0_A_SIMD_BIT)

/* 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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