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vfp
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vfpinstr.h

vfpinstr.h 2.8 KB
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  1. /*
    2. 

  2.  *  linux/arch/arm/vfp/vfpinstr.h
    3. 

  3.  *
    4. 

  4.  *  Copyright (C) 2004 ARM Limited.
    5. 

  5.  *  Written by Deep Blue Solutions Limited.
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute it and/or modify
    8. 

  8.  * it under the terms of the GNU General Public License version 2 as
    9. 

  9.  * published by the Free Software Foundation.
    10. 

  10.  *
    11. 

  11.  * VFP instruction masks.
    12. 

  12.  */
    13. 

  13. #define INST_CPRTDO(inst)	(((inst) & 0x0f000000) == 0x0e000000)
    14. 

  14. #define INST_CPRT(inst)		((inst) & (1 << 4))
    15. 

  15. #define INST_CPRT_L(inst)	((inst) & (1 << 20))
    16. 

  16. #define INST_CPRT_Rd(inst)	(((inst) & (15 << 12)) >> 12)
    17. 

  17. #define INST_CPRT_OP(inst)	(((inst) >> 21) & 7)
    18. 

  18. #define INST_CPNUM(inst)	((inst) & 0xf00)
    19. 

  19. #define CPNUM(cp)		((cp) << 8)
    20. 

  20. 

  21. #define FOP_MASK	(0x00b00040)
    22. 

  22. #define FOP_FMAC	(0x00000000)
    23. 

  23. #define FOP_FNMAC	(0x00000040)
    24. 

  24. #define FOP_FMSC	(0x00100000)
    25. 

  25. #define FOP_FNMSC	(0x00100040)
    26. 

  26. #define FOP_FMUL	(0x00200000)
    27. 

  27. #define FOP_FNMUL	(0x00200040)
    28. 

  28. #define FOP_FADD	(0x00300000)
    29. 

  29. #define FOP_FSUB	(0x00300040)
    30. 

  30. #define FOP_FDIV	(0x00800000)
    31. 

  31. #define FOP_EXT		(0x00b00040)
    32. 

  32. 

  33. #define FOP_TO_IDX(inst)	((inst & 0x00b00000) >> 20 | (inst & (1 << 6)) >> 4)
    34. 

  34. 

  35. #define FEXT_MASK	(0x000f0080)
    36. 

  36. #define FEXT_FCPY	(0x00000000)
    37. 

  37. #define FEXT_FABS	(0x00000080)
    38. 

  38. #define FEXT_FNEG	(0x00010000)
    39. 

  39. #define FEXT_FSQRT	(0x00010080)
    40. 

  40. #define FEXT_FCMP	(0x00040000)
    41. 

  41. #define FEXT_FCMPE	(0x00040080)
    42. 

  42. #define FEXT_FCMPZ	(0x00050000)
    43. 

  43. #define FEXT_FCMPEZ	(0x00050080)
    44. 

  44. #define FEXT_FCVT	(0x00070080)
    45. 

  45. #define FEXT_FUITO	(0x00080000)
    46. 

  46. #define FEXT_FSITO	(0x00080080)
    47. 

  47. #define FEXT_FTOUI	(0x000c0000)
    48. 

  48. #define FEXT_FTOUIZ	(0x000c0080)
    49. 

  49. #define FEXT_FTOSI	(0x000d0000)
    50. 

  50. #define FEXT_FTOSIZ	(0x000d0080)
    51. 

  51. 

  52. #define FEXT_TO_IDX(inst)	((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
    53. 

  53. 

  54. #define vfp_get_sd(inst)	((inst & 0x0000f000) >> 11 | (inst & (1 << 22)) >> 22)
    55. 

  55. #define vfp_get_dd(inst)	((inst & 0x0000f000) >> 12 | (inst & (1 << 22)) >> 18)
    56. 

  56. #define vfp_get_sm(inst)	((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5)
    57. 

  57. #define vfp_get_dm(inst)	((inst & 0x0000000f) | (inst & (1 << 5)) >> 1)
    58. 

  58. #define vfp_get_sn(inst)	((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
    59. 

  59. #define vfp_get_dn(inst)	((inst & 0x000f0000) >> 16 | (inst & (1 << 7)) >> 3)
    60. 

  60. 

  61. #define vfp_single(inst)	(((inst) & 0x0000f00) == 0xa00)
    62. 

  62. 

  63. #define FPSCR_N	(1 << 31)
    64. 

  64. #define FPSCR_Z	(1 << 30)
    65. 

  65. #define FPSCR_C (1 << 29)
    66. 

  66. #define FPSCR_V	(1 << 28)
    67. 

  67. 

  68. /*
    69. 

  69.  * Since we aren't building with -mfpu=vfp, we need to code
    70. 

  70.  * these instructions using their MRC/MCR equivalents.
    71. 

  71.  */
    72. 

  72. #define vfpreg(_vfp_) #_vfp_
    73. 

  73. 

  74. #define fmrx(_vfp_) ({			\
    75. 

  75. 	u32 __v;			\
    76. 

  76. 	asm("mrc p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmrx	%0, " #_vfp_	\
    77. 

  77. 	    : "=r" (__v) : : "cc");	\
    78. 

  78. 	__v;				\
    79. 

  79.  })
    80. 

  80. 

  81. #define fmxr(_vfp_,_var_)		\
    82. 

  82. 	asm("mcr p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmxr	" #_vfp_ ", %0"	\
    83. 

  83. 	   : : "r" (_var_) : "cc")
    84. 

  84. 

  85. u32 vfp_single_cpdo(u32 inst, u32 fpscr);
    86. 

  86. u32 vfp_single_cprt(u32 inst, u32 fpscr, struct pt_regs *regs);
    87. 

  87. 

  88. u32 vfp_double_cpdo(u32 inst, u32 fpscr);
    89. 

  89.