Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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))