diff options
Diffstat (limited to 'arch/sh/include/asm/bitops-llsc.h')
| -rw-r--r-- | arch/sh/include/asm/bitops-llsc.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bitops-llsc.h b/arch/sh/include/asm/bitops-llsc.h new file mode 100644 index 000000000000..43b8e1a8239e --- /dev/null +++ b/arch/sh/include/asm/bitops-llsc.h | |||
| @@ -0,0 +1,144 @@ | |||
| 1 | #ifndef __ASM_SH_BITOPS_LLSC_H | ||
| 2 | #define __ASM_SH_BITOPS_LLSC_H | ||
| 3 | |||
| 4 | static inline void set_bit(int nr, volatile void * addr) | ||
| 5 | { | ||
| 6 | int mask; | ||
| 7 | volatile unsigned int *a = addr; | ||
| 8 | unsigned long tmp; | ||
| 9 | |||
| 10 | a += nr >> 5; | ||
| 11 | mask = 1 << (nr & 0x1f); | ||
| 12 | |||
| 13 | __asm__ __volatile__ ( | ||
| 14 | "1: \n\t" | ||
| 15 | "movli.l @%1, %0 ! set_bit \n\t" | ||
| 16 | "or %3, %0 \n\t" | ||
| 17 | "movco.l %0, @%1 \n\t" | ||
| 18 | "bf 1b \n\t" | ||
| 19 | : "=&z" (tmp), "=r" (a) | ||
| 20 | : "1" (a), "r" (mask) | ||
| 21 | : "t", "memory" | ||
| 22 | ); | ||
| 23 | } | ||
| 24 | |||
| 25 | static inline void clear_bit(int nr, volatile void * addr) | ||
| 26 | { | ||
| 27 | int mask; | ||
| 28 | volatile unsigned int *a = addr; | ||
| 29 | unsigned long tmp; | ||
| 30 | |||
| 31 | a += nr >> 5; | ||
| 32 | mask = 1 << (nr & 0x1f); | ||
| 33 | |||
| 34 | __asm__ __volatile__ ( | ||
| 35 | "1: \n\t" | ||
| 36 | "movli.l @%1, %0 ! clear_bit \n\t" | ||
| 37 | "and %3, %0 \n\t" | ||
| 38 | "movco.l %0, @%1 \n\t" | ||
| 39 | "bf 1b \n\t" | ||
| 40 | : "=&z" (tmp), "=r" (a) | ||
| 41 | : "1" (a), "r" (~mask) | ||
| 42 | : "t", "memory" | ||
| 43 | ); | ||
| 44 | } | ||
| 45 | |||
| 46 | static inline void change_bit(int nr, volatile void * addr) | ||
| 47 | { | ||
| 48 | int mask; | ||
| 49 | volatile unsigned int *a = addr; | ||
| 50 | unsigned long tmp; | ||
| 51 | |||
| 52 | a += nr >> 5; | ||
| 53 | mask = 1 << (nr & 0x1f); | ||
| 54 | |||
| 55 | __asm__ __volatile__ ( | ||
| 56 | "1: \n\t" | ||
| 57 | "movli.l @%1, %0 ! change_bit \n\t" | ||
| 58 | "xor %3, %0 \n\t" | ||
| 59 | "movco.l %0, @%1 \n\t" | ||
| 60 | "bf 1b \n\t" | ||
| 61 | : "=&z" (tmp), "=r" (a) | ||
| 62 | : "1" (a), "r" (mask) | ||
| 63 | : "t", "memory" | ||
| 64 | ); | ||
| 65 | } | ||
| 66 | |||
| 67 | static inline int test_and_set_bit(int nr, volatile void * addr) | ||
| 68 | { | ||
| 69 | int mask, retval; | ||
| 70 | volatile unsigned int *a = addr; | ||
| 71 | unsigned long tmp; | ||
| 72 | |||
| 73 | a += nr >> 5; | ||
| 74 | mask = 1 << (nr & 0x1f); | ||
| 75 | |||
| 76 | __asm__ __volatile__ ( | ||
| 77 | "1: \n\t" | ||
| 78 | "movli.l @%1, %0 ! test_and_set_bit \n\t" | ||
| 79 | "mov %0, %2 \n\t" | ||
| 80 | "or %4, %0 \n\t" | ||
| 81 | "movco.l %0, @%1 \n\t" | ||
| 82 | "bf 1b \n\t" | ||
| 83 | "and %4, %2 \n\t" | ||
| 84 | : "=&z" (tmp), "=r" (a), "=&r" (retval) | ||
| 85 | : "1" (a), "r" (mask) | ||
| 86 | : "t", "memory" | ||
| 87 | ); | ||
| 88 | |||
| 89 | return retval != 0; | ||
| 90 | } | ||
| 91 | |||
| 92 | static inline int test_and_clear_bit(int nr, volatile void * addr) | ||
| 93 | { | ||
| 94 | int mask, retval; | ||
| 95 | volatile unsigned int *a = addr; | ||
| 96 | unsigned long tmp; | ||
| 97 | |||
| 98 | a += nr >> 5; | ||
| 99 | mask = 1 << (nr & 0x1f); | ||
| 100 | |||
| 101 | __asm__ __volatile__ ( | ||
| 102 | "1: \n\t" | ||
| 103 | "movli.l @%1, %0 ! test_and_clear_bit \n\t" | ||
| 104 | "mov %0, %2 \n\t" | ||
| 105 | "and %5, %0 \n\t" | ||
| 106 | "movco.l %0, @%1 \n\t" | ||
| 107 | "bf 1b \n\t" | ||
| 108 | "and %4, %2 \n\t" | ||
| 109 | "synco \n\t" | ||
| 110 | : "=&z" (tmp), "=r" (a), "=&r" (retval) | ||
| 111 | : "1" (a), "r" (mask), "r" (~mask) | ||
| 112 | : "t", "memory" | ||
| 113 | ); | ||
| 114 | |||
| 115 | return retval != 0; | ||
| 116 | } | ||
| 117 | |||
| 118 | static inline int test_and_change_bit(int nr, volatile void * addr) | ||
| 119 | { | ||
| 120 | int mask, retval; | ||
| 121 | volatile unsigned int *a = addr; | ||
| 122 | unsigned long tmp; | ||
| 123 | |||
| 124 | a += nr >> 5; | ||
| 125 | mask = 1 << (nr & 0x1f); | ||
| 126 | |||
| 127 | __asm__ __volatile__ ( | ||
| 128 | "1: \n\t" | ||
| 129 | "movli.l @%1, %0 ! test_and_change_bit \n\t" | ||
| 130 | "mov %0, %2 \n\t" | ||
| 131 | "xor %4, %0 \n\t" | ||
| 132 | "movco.l %0, @%1 \n\t" | ||
| 133 | "bf 1b \n\t" | ||
| 134 | "and %4, %2 \n\t" | ||
| 135 | "synco \n\t" | ||
| 136 | : "=&z" (tmp), "=r" (a), "=&r" (retval) | ||
| 137 | : "1" (a), "r" (mask) | ||
| 138 | : "t", "memory" | ||
| 139 | ); | ||
| 140 | |||
| 141 | return retval != 0; | ||
| 142 | } | ||
| 143 | |||
| 144 | #endif /* __ASM_SH_BITOPS_LLSC_H */ | ||