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