| Stuart Menefy | 1efe4ce | 2007-11-30 16:12:36 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_ATOMIC_GRB_H |
| 2 | #define __ASM_SH_ATOMIC_GRB_H |
| 3 | |
| 4 | static inline void atomic_add(int i, atomic_t *v) |
| 5 | { |
| 6 | int tmp; |
| 7 | |
| 8 | __asm__ __volatile__ ( |
| 9 | " .align 2 \n\t" |
| 10 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 11 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 12 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 13 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 14 | " add %2, %0 \n\t" /* add */ |
| 15 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 16 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 17 | : "=&r" (tmp), |
| 18 | "+r" (v) |
| 19 | : "r" (i) |
| 20 | : "memory" , "r0", "r1"); |
| 21 | } |
| 22 | |
| 23 | static inline void atomic_sub(int i, atomic_t *v) |
| 24 | { |
| 25 | int tmp; |
| 26 | |
| 27 | __asm__ __volatile__ ( |
| 28 | " .align 2 \n\t" |
| 29 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 30 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 31 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 32 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 33 | " sub %2, %0 \n\t" /* sub */ |
| 34 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 35 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 36 | : "=&r" (tmp), |
| 37 | "+r" (v) |
| 38 | : "r" (i) |
| 39 | : "memory" , "r0", "r1"); |
| 40 | } |
| 41 | |
| 42 | static inline int atomic_add_return(int i, atomic_t *v) |
| 43 | { |
| 44 | int tmp; |
| 45 | |
| 46 | __asm__ __volatile__ ( |
| 47 | " .align 2 \n\t" |
| 48 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 49 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 50 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 51 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 52 | " add %2, %0 \n\t" /* add */ |
| 53 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 54 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 55 | : "=&r" (tmp), |
| 56 | "+r" (v) |
| 57 | : "r" (i) |
| 58 | : "memory" , "r0", "r1"); |
| 59 | |
| 60 | return tmp; |
| 61 | } |
| 62 | |
| 63 | static inline int atomic_sub_return(int i, atomic_t *v) |
| 64 | { |
| 65 | int tmp; |
| 66 | |
| 67 | __asm__ __volatile__ ( |
| 68 | " .align 2 \n\t" |
| 69 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 70 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 71 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 72 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 73 | " sub %2, %0 \n\t" /* sub */ |
| 74 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 75 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 76 | : "=&r" (tmp), |
| 77 | "+r" (v) |
| 78 | : "r" (i) |
| 79 | : "memory", "r0", "r1"); |
| 80 | |
| 81 | return tmp; |
| 82 | } |
| 83 | |
| 84 | static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) |
| 85 | { |
| 86 | int tmp; |
| 87 | unsigned int _mask = ~mask; |
| 88 | |
| 89 | __asm__ __volatile__ ( |
| 90 | " .align 2 \n\t" |
| 91 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 92 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 93 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 94 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 95 | " and %2, %0 \n\t" /* add */ |
| 96 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 97 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 98 | : "=&r" (tmp), |
| 99 | "+r" (v) |
| 100 | : "r" (_mask) |
| 101 | : "memory" , "r0", "r1"); |
| 102 | } |
| 103 | |
| 104 | static inline void atomic_set_mask(unsigned int mask, atomic_t *v) |
| 105 | { |
| 106 | int tmp; |
| 107 | |
| 108 | __asm__ __volatile__ ( |
| 109 | " .align 2 \n\t" |
| 110 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 111 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 112 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 113 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 114 | " or %2, %0 \n\t" /* or */ |
| 115 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 116 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 117 | : "=&r" (tmp), |
| 118 | "+r" (v) |
| 119 | : "r" (mask) |
| 120 | : "memory" , "r0", "r1"); |
| 121 | } |
| 122 | |
| 123 | static inline int atomic_cmpxchg(atomic_t *v, int old, int new) |
| 124 | { |
| 125 | int ret; |
| 126 | |
| 127 | __asm__ __volatile__ ( |
| 128 | " .align 2 \n\t" |
| 129 | " mova 1f, r0 \n\t" |
| 130 | " nop \n\t" |
| 131 | " mov r15, r1 \n\t" |
| 132 | " mov #-8, r15 \n\t" |
| 133 | " mov.l @%1, %0 \n\t" |
| 134 | " cmp/eq %2, %0 \n\t" |
| 135 | " bf 1f \n\t" |
| 136 | " mov.l %3, @%1 \n\t" |
| 137 | "1: mov r1, r15 \n\t" |
| 138 | : "=&r" (ret) |
| 139 | : "r" (v), "r" (old), "r" (new) |
| 140 | : "memory" , "r0", "r1" , "t"); |
| 141 | |
| 142 | return ret; |
| 143 | } |
| 144 | |
| 145 | static inline int atomic_add_unless(atomic_t *v, int a, int u) |
| 146 | { |
| 147 | int ret; |
| 148 | unsigned long tmp; |
| 149 | |
| 150 | __asm__ __volatile__ ( |
| 151 | " .align 2 \n\t" |
| 152 | " mova 1f, r0 \n\t" |
| 153 | " nop \n\t" |
| 154 | " mov r15, r1 \n\t" |
| 155 | " mov #-12, r15 \n\t" |
| 156 | " mov.l @%2, %1 \n\t" |
| 157 | " mov %1, %0 \n\t" |
| 158 | " cmp/eq %4, %0 \n\t" |
| 159 | " bt/s 1f \n\t" |
| 160 | " add %3, %1 \n\t" |
| 161 | " mov.l %1, @%2 \n\t" |
| 162 | "1: mov r1, r15 \n\t" |
| 163 | : "=&r" (ret), "=&r" (tmp) |
| 164 | : "r" (v), "r" (a), "r" (u) |
| 165 | : "memory" , "r0", "r1" , "t"); |
| 166 | |
| 167 | return ret != u; |
| 168 | } |
| 169 | #endif /* __ASM_SH_ATOMIC_GRB_H */ |