vfp.h

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/*
 * 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))