| Stuart Menefy | 1efe4ce | 2007-11-30 16:12:36 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_BITOPS_GRB_H |
| 2 | #define __ASM_SH_BITOPS_GRB_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 | " .align 2 \n\t" |
| 15 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 16 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 17 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 18 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 19 | " or %2, %0 \n\t" /* or */ |
| 20 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 21 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 22 | : "=&r" (tmp), |
| 23 | "+r" (a) |
| 24 | : "r" (mask) |
| 25 | : "memory" , "r0", "r1"); |
| 26 | } |
| 27 | |
| 28 | static inline void clear_bit(int nr, volatile void * addr) |
| 29 | { |
| 30 | int mask; |
| 31 | volatile unsigned int *a = addr; |
| 32 | unsigned long tmp; |
| 33 | |
| 34 | a += nr >> 5; |
| 35 | mask = ~(1 << (nr & 0x1f)); |
| 36 | __asm__ __volatile__ ( |
| 37 | " .align 2 \n\t" |
| 38 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 39 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 40 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 41 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 42 | " and %2, %0 \n\t" /* and */ |
| 43 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 44 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 45 | : "=&r" (tmp), |
| 46 | "+r" (a) |
| 47 | : "r" (mask) |
| 48 | : "memory" , "r0", "r1"); |
| 49 | } |
| 50 | |
| 51 | static inline void change_bit(int nr, volatile void * addr) |
| 52 | { |
| 53 | int mask; |
| 54 | volatile unsigned int *a = addr; |
| 55 | unsigned long tmp; |
| 56 | |
| 57 | a += nr >> 5; |
| 58 | mask = 1 << (nr & 0x1f); |
| 59 | __asm__ __volatile__ ( |
| 60 | " .align 2 \n\t" |
| 61 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 62 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 63 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ |
| 64 | " mov.l @%1, %0 \n\t" /* load old value */ |
| 65 | " xor %2, %0 \n\t" /* xor */ |
| 66 | " mov.l %0, @%1 \n\t" /* store new value */ |
| 67 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 68 | : "=&r" (tmp), |
| 69 | "+r" (a) |
| 70 | : "r" (mask) |
| 71 | : "memory" , "r0", "r1"); |
| 72 | } |
| 73 | |
| 74 | static inline int test_and_set_bit(int nr, volatile void * addr) |
| 75 | { |
| 76 | int mask, retval; |
| 77 | volatile unsigned int *a = addr; |
| 78 | unsigned long tmp; |
| 79 | |
| 80 | a += nr >> 5; |
| 81 | mask = 1 << (nr & 0x1f); |
| 82 | |
| 83 | __asm__ __volatile__ ( |
| 84 | " .align 2 \n\t" |
| 85 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 86 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 87 | " mov #-14, r15 \n\t" /* LOGIN: r15 = size */ |
| 88 | " mov.l @%2, %0 \n\t" /* load old value */ |
| 89 | " mov %0, %1 \n\t" |
| 90 | " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ |
| 91 | " mov #-1, %1 \n\t" /* retvat = -1 */ |
| 92 | " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ |
| 93 | " or %3, %0 \n\t" |
| 94 | " mov.l %0, @%2 \n\t" /* store new value */ |
| 95 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 96 | : "=&r" (tmp), |
| 97 | "=&r" (retval), |
| 98 | "+r" (a) |
| 99 | : "r" (mask) |
| 100 | : "memory" , "r0", "r1" ,"t"); |
| 101 | |
| 102 | return retval; |
| 103 | } |
| 104 | |
| 105 | static inline int test_and_clear_bit(int nr, volatile void * addr) |
| 106 | { |
| 107 | int mask, retval,not_mask; |
| 108 | volatile unsigned int *a = addr; |
| 109 | unsigned long tmp; |
| 110 | |
| 111 | a += nr >> 5; |
| 112 | mask = 1 << (nr & 0x1f); |
| 113 | |
| 114 | not_mask = ~mask; |
| 115 | |
| 116 | __asm__ __volatile__ ( |
| 117 | " .align 2 \n\t" |
| 118 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 119 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 120 | " mov #-14, r15 \n\t" /* LOGIN */ |
| 121 | " mov.l @%2, %0 \n\t" /* load old value */ |
| 122 | " mov %0, %1 \n\t" /* %1 = *a */ |
| 123 | " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ |
| 124 | " mov #-1, %1 \n\t" /* retvat = -1 */ |
| 125 | " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ |
| 126 | " and %4, %0 \n\t" |
| 127 | " mov.l %0, @%2 \n\t" /* store new value */ |
| 128 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 129 | : "=&r" (tmp), |
| 130 | "=&r" (retval), |
| 131 | "+r" (a) |
| 132 | : "r" (mask), |
| 133 | "r" (not_mask) |
| 134 | : "memory" , "r0", "r1", "t"); |
| 135 | |
| 136 | return retval; |
| 137 | } |
| 138 | |
| 139 | static inline int test_and_change_bit(int nr, volatile void * addr) |
| 140 | { |
| 141 | int mask, retval; |
| 142 | volatile unsigned int *a = addr; |
| 143 | unsigned long tmp; |
| 144 | |
| 145 | a += nr >> 5; |
| 146 | mask = 1 << (nr & 0x1f); |
| 147 | |
| 148 | __asm__ __volatile__ ( |
| 149 | " .align 2 \n\t" |
| 150 | " mova 1f, r0 \n\t" /* r0 = end point */ |
| 151 | " mov r15, r1 \n\t" /* r1 = saved sp */ |
| 152 | " mov #-14, r15 \n\t" /* LOGIN */ |
| 153 | " mov.l @%2, %0 \n\t" /* load old value */ |
| 154 | " mov %0, %1 \n\t" /* %1 = *a */ |
| 155 | " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ |
| 156 | " mov #-1, %1 \n\t" /* retvat = -1 */ |
| 157 | " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ |
| 158 | " xor %3, %0 \n\t" |
| 159 | " mov.l %0, @%2 \n\t" /* store new value */ |
| 160 | "1: mov r1, r15 \n\t" /* LOGOUT */ |
| 161 | : "=&r" (tmp), |
| 162 | "=&r" (retval), |
| 163 | "+r" (a) |
| 164 | : "r" (mask) |
| 165 | : "memory" , "r0", "r1", "t"); |
| 166 | |
| 167 | return retval; |
| 168 | } |
| 169 | #endif /* __ASM_SH_BITOPS_GRB_H */ |