release/src-rt-6.x/linux/linux-2.6/include/asm-arm/vfp.h

   1 /*
   2  * linux/include/asm-arm/vfp.h
   3  *
   4  * VFP register definitions.
   5  * First, the standard VFP set.
   6  */
   7
   8 #define FPSID                   cr0
   9 #define FPSCR                   cr1
  10 #define FPEXC                   cr8
  11
  12 /* FPSID bits */
  13 #define FPSID_IMPLEMENTER_BIT   (24)
  14 #define FPSID_IMPLEMENTER_MASK  (0xff << FPSID_IMPLEMENTER_BIT)
  15 #define FPSID_SOFTWARE          (1<<23)
  16 #define FPSID_FORMAT_BIT        (21)
  17 #define FPSID_FORMAT_MASK       (0x3  << FPSID_FORMAT_BIT)
  18 #define FPSID_NODOUBLE          (1<<20)
  19 #define FPSID_ARCH_BIT          (16)
  20 #define FPSID_ARCH_MASK         (0xF  << FPSID_ARCH_BIT)
  21 #define FPSID_PART_BIT          (8)
  22 #define FPSID_PART_MASK         (0xFF << FPSID_PART_BIT)
  23 #define FPSID_VARIANT_BIT       (4)
  24 #define FPSID_VARIANT_MASK      (0xF  << FPSID_VARIANT_BIT)
  25 #define FPSID_REV_BIT           (0)
  26 #define FPSID_REV_MASK          (0xF  << FPSID_REV_BIT)
  27
  28 /* FPEXC bits */
  29 #define FPEXC_EXCEPTION         (1<<31)
  30 #define FPEXC_ENABLE            (1<<30)
  31
  32 /* FPSCR bits */
  33 #define FPSCR_DEFAULT_NAN       (1<<25)
  34 #define FPSCR_FLUSHTOZERO       (1<<24)
  35 #define FPSCR_ROUND_NEAREST     (0<<22)
  36 #define FPSCR_ROUND_PLUSINF     (1<<22)
  37 #define FPSCR_ROUND_MINUSINF    (2<<22)
  38 #define FPSCR_ROUND_TOZERO      (3<<22)
  39 #define FPSCR_RMODE_BIT         (22)
  40 #define FPSCR_RMODE_MASK        (3 << FPSCR_RMODE_BIT)
  41 #define FPSCR_STRIDE_BIT        (20)
  42 #define FPSCR_STRIDE_MASK       (3 << FPSCR_STRIDE_BIT)
  43 #define FPSCR_LENGTH_BIT        (16)
  44 #define FPSCR_LENGTH_MASK       (7 << FPSCR_LENGTH_BIT)
  45 #define FPSCR_IOE               (1<<8)
  46 #define FPSCR_DZE               (1<<9)
  47 #define FPSCR_OFE               (1<<10)
  48 #define FPSCR_UFE               (1<<11)
  49 #define FPSCR_IXE               (1<<12)
  50 #define FPSCR_IDE               (1<<15)
  51 #define FPSCR_IOC               (1<<0)
  52 #define FPSCR_DZC               (1<<1)
  53 #define FPSCR_OFC               (1<<2)
  54 #define FPSCR_UFC               (1<<3)
  55 #define FPSCR_IXC               (1<<4)
  56 #define FPSCR_IDC               (1<<7)
  57
  58 /*
  59  * VFP9-S specific.
  60  */
  61 #define FPINST                  cr9
  62 #define FPINST2                 cr10
  63
  64 /* FPEXC bits */
  65 #define FPEXC_FPV2              (1<<28)
  66 #define FPEXC_LENGTH_BIT        (8)
  67 #define FPEXC_LENGTH_MASK       (7 << FPEXC_LENGTH_BIT)
  68 #define FPEXC_INV               (1 << 7)
  69 #define FPEXC_UFC               (1 << 3)
  70 #define FPEXC_OFC               (1 << 2)
  71 #define FPEXC_IOC               (1 << 0)
  72
  73 /* Bit patterns for decoding the packaged operation descriptors */
  74 #define VFPOPDESC_LENGTH_BIT    (9)
  75 #define VFPOPDESC_LENGTH_MASK   (0x07 << VFPOPDESC_LENGTH_BIT)
  76 #define VFPOPDESC_UNUSED_BIT    (24)
  77 #define VFPOPDESC_UNUSED_MASK   (0xFF << VFPOPDESC_UNUSED_BIT)
  78 #define VFPOPDESC_OPDESC_MASK   (~(VFPOPDESC_LENGTH_MASK | VFPOPDESC_UNUSED_MASK))