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vfpinstr.h
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1 /*
2  * linux/arch/arm/vfp/vfpinstr.h
3  *
4  * Copyright (C) 2004 ARM Limited.
5  * Written by Deep Blue Solutions Limited.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  * VFP instruction masks.
12  */
13 #define INST_CPRTDO(inst) (((inst) & 0x0f000000) == 0x0e000000)
14 #define INST_CPRT(inst) ((inst) & (1 << 4))
15 #define INST_CPRT_L(inst) ((inst) & (1 << 20))
16 #define INST_CPRT_Rd(inst) (((inst) & (15 << 12)) >> 12)
17 #define INST_CPRT_OP(inst) (((inst) >> 21) & 7)
18 #define INST_CPNUM(inst) ((inst) & 0xf00)
19 #define CPNUM(cp) ((cp) << 8)
20 
21 #define FOP_MASK (0x00b00040)
22 #define FOP_FMAC (0x00000000)
23 #define FOP_FNMAC (0x00000040)
24 #define FOP_FMSC (0x00100000)
25 #define FOP_FNMSC (0x00100040)
26 #define FOP_FMUL (0x00200000)
27 #define FOP_FNMUL (0x00200040)
28 #define FOP_FADD (0x00300000)
29 #define FOP_FSUB (0x00300040)
30 #define FOP_FDIV (0x00800000)
31 #define FOP_EXT (0x00b00040)
32 
33 #define FOP_TO_IDX(inst) ((inst & 0x00b00000) >> 20 | (inst & (1 << 6)) >> 4)
34 
35 #define FEXT_MASK (0x000f0080)
36 #define FEXT_FCPY (0x00000000)
37 #define FEXT_FABS (0x00000080)
38 #define FEXT_FNEG (0x00010000)
39 #define FEXT_FSQRT (0x00010080)
40 #define FEXT_FCMP (0x00040000)
41 #define FEXT_FCMPE (0x00040080)
42 #define FEXT_FCMPZ (0x00050000)
43 #define FEXT_FCMPEZ (0x00050080)
44 #define FEXT_FCVT (0x00070080)
45 #define FEXT_FUITO (0x00080000)
46 #define FEXT_FSITO (0x00080080)
47 #define FEXT_FTOUI (0x000c0000)
48 #define FEXT_FTOUIZ (0x000c0080)
49 #define FEXT_FTOSI (0x000d0000)
50 #define FEXT_FTOSIZ (0x000d0080)
51 
52 #define FEXT_TO_IDX(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
53 
54 #define vfp_get_sd(inst) ((inst & 0x0000f000) >> 11 | (inst & (1 << 22)) >> 22)
55 #define vfp_get_dd(inst) ((inst & 0x0000f000) >> 12 | (inst & (1 << 22)) >> 18)
56 #define vfp_get_sm(inst) ((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5)
57 #define vfp_get_dm(inst) ((inst & 0x0000000f) | (inst & (1 << 5)) >> 1)
58 #define vfp_get_sn(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
59 #define vfp_get_dn(inst) ((inst & 0x000f0000) >> 16 | (inst & (1 << 7)) >> 3)
60 
61 #define vfp_single(inst) (((inst) & 0x0000f00) == 0xa00)
62 
63 #define FPSCR_N (1 << 31)
64 #define FPSCR_Z (1 << 30)
65 #define FPSCR_C (1 << 29)
66 #define FPSCR_V (1 << 28)
67 
68 /*
69  * Since we aren't building with -mfpu=vfp, we need to code
70  * these instructions using their MRC/MCR equivalents.
71  */
72 #define vfpreg(_vfp_) #_vfp_
73 
74 #define fmrx(_vfp_) ({ \
75  u32 __v; \
76  asm("mrc p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmrx %0, " #_vfp_ \
77  : "=r" (__v) : : "cc"); \
78  __v; \
79  })
80 
81 #define fmxr(_vfp_,_var_) \
82  asm("mcr p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmxr " #_vfp_ ", %0" \
83  : : "r" (_var_) : "cc")
84 
85 u32 vfp_single_cpdo(u32 inst, u32 fpscr);
86 u32 vfp_single_cprt(u32 inst, u32 fpscr, struct pt_regs *regs);
87 
88 u32 vfp_double_cpdo(u32 inst, u32 fpscr);