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samsung-sm8650
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android_kernel_samsung_sm8650_ksu
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android_kernel_...
/
arch
/
sh
/
include
/
asm
/
bitops.h

bitops.h 1.6 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef __ASM_SH_BITOPS_H
    3. 

  3. #define __ASM_SH_BITOPS_H
    4. 

  4. 

  5. #ifndef _LINUX_BITOPS_H
    6. 

  6. #error only <linux/bitops.h> can be included directly
    7. 

  7. #endif
    8. 

  8. 

  9. /* For __swab32 */
    10. 

  10. #include <asm/byteorder.h>
    11. 

  11. #include <asm/barrier.h>
    12. 

  12. 

  13. #ifdef CONFIG_GUSA_RB
    14. 

  14. #include <asm/bitops-grb.h>
    15. 

  15. #elif defined(CONFIG_CPU_SH2A)
    16. 

  16. #include <asm-generic/bitops/atomic.h>
    17. 

  17. #include <asm/bitops-op32.h>
    18. 

  18. #elif defined(CONFIG_CPU_SH4A)
    19. 

  19. #include <asm/bitops-llsc.h>
    20. 

  20. #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP)
    21. 

  21. #include <asm/bitops-cas.h>
    22. 

  22. #else
    23. 

  23. #include <asm-generic/bitops/atomic.h>
    24. 

  24. #include <asm-generic/bitops/non-atomic.h>
    25. 

  25. #endif
    26. 

  26. 

  27. static inline unsigned long ffz(unsigned long word)
    28. 

  28. {
    29. 

  29. 	unsigned long result;
    30. 

  30. 

  31. 	__asm__("1:\n\t"
    32. 

  32. 		"shlr	%1\n\t"
    33. 

  33. 		"bt/s	1b\n\t"
    34. 

  34. 		" add	#1, %0"
    35. 

  35. 		: "=r" (result), "=r" (word)
    36. 

  36. 		: "0" (~0L), "1" (word)
    37. 

  37. 		: "t");
    38. 

  38. 	return result;
    39. 

  39. }
    40. 

  40. 

  41. /**
    42. 

  42.  * __ffs - find first bit in word.
    43. 

  43.  * @word: The word to search
    44. 

  44.  *
    45. 

  45.  * Undefined if no bit exists, so code should check against 0 first.
    46. 

  46.  */
    47. 

  47. static inline unsigned long __ffs(unsigned long word)
    48. 

  48. {
    49. 

  49. 	unsigned long result;
    50. 

  50. 

  51. 	__asm__("1:\n\t"
    52. 

  52. 		"shlr	%1\n\t"
    53. 

  53. 		"bf/s	1b\n\t"
    54. 

  54. 		" add	#1, %0"
    55. 

  55. 		: "=r" (result), "=r" (word)
    56. 

  56. 		: "0" (~0L), "1" (word)
    57. 

  57. 		: "t");
    58. 

  58. 	return result;
    59. 

  59. }
    60. 

  60. 

  61. #include <asm-generic/bitops/ffs.h>
    62. 

  62. #include <asm-generic/bitops/hweight.h>
    63. 

  63. #include <asm-generic/bitops/lock.h>
    64. 

  64. #include <asm-generic/bitops/sched.h>
    65. 

  65. #include <asm-generic/bitops/ext2-atomic.h>
    66. 

  66. #include <asm-generic/bitops/fls.h>
    67. 

  67. #include <asm-generic/bitops/__fls.h>
    68. 

  68. #include <asm-generic/bitops/fls64.h>
    69. 

  69. 

  70. #include <asm-generic/bitops/le.h>
    71. 

  71. 

  72. #endif /* __ASM_SH_BITOPS_H */
    73.