projects / mirror_ubuntu-disco-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1efe4ce3 SM |
2 | #ifndef __ASM_SH_ATOMIC_GRB_H |
| 3 | #define __ASM_SH_ATOMIC_GRB_H | |
| 4 | ||
| c6470150 PZ |
5 | #define ATOMIC_OP(op) \ |
| 6 | static inline void atomic_##op(int i, atomic_t *v) \ | |
| 7 | { \ | |
| 8 | int tmp; \ | |
| 9 | \ | |
| 10 | __asm__ __volatile__ ( \ | |
| 11 | " .align 2 \n\t" \ | |
| 12 | " mova 1f, r0 \n\t" /* r0 = end point */ \ | |
| 13 | " mov r15, r1 \n\t" /* r1 = saved sp */ \ | |
| 14 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \ | |
| 15 | " mov.l @%1, %0 \n\t" /* load old value */ \ | |
| 16 | " " #op " %2, %0 \n\t" /* $op */ \ | |
| 17 | " mov.l %0, @%1 \n\t" /* store new value */ \ | |
| 18 | "1: mov r1, r15 \n\t" /* LOGOUT */ \ | |
| 19 | : "=&r" (tmp), \ | |
| 20 | "+r" (v) \ | |
| 21 | : "r" (i) \ | |
| 22 | : "memory" , "r0", "r1"); \ | |
| 23 | } \ | |
| 24 | ||
| 25 | #define ATOMIC_OP_RETURN(op) \ | |
| 26 | static inline int atomic_##op##_return(int i, atomic_t *v) \ | |
| 27 | { \ | |
| 28 | int tmp; \ | |
| 29 | \ | |
| 30 | __asm__ __volatile__ ( \ | |
| 31 | " .align 2 \n\t" \ | |
| 32 | " mova 1f, r0 \n\t" /* r0 = end point */ \ | |
| 33 | " mov r15, r1 \n\t" /* r1 = saved sp */ \ | |
| 34 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \ | |
| 35 | " mov.l @%1, %0 \n\t" /* load old value */ \ | |
| 36 | " " #op " %2, %0 \n\t" /* $op */ \ | |
| 37 | " mov.l %0, @%1 \n\t" /* store new value */ \ | |
| 38 | "1: mov r1, r15 \n\t" /* LOGOUT */ \ | |
| 39 | : "=&r" (tmp), \ | |
| 40 | "+r" (v) \ | |
| 41 | : "r" (i) \ | |
| 42 | : "memory" , "r0", "r1"); \ | |
| 43 | \ | |
| 44 | return tmp; \ | |
| 1efe4ce3 SM |
45 | } |
| 46 | ||
| 7d9794e7 PZ |
47 | #define ATOMIC_FETCH_OP(op) \ |
| 48 | static inline int atomic_fetch_##op(int i, atomic_t *v) \ | |
| 49 | { \ | |
| 50 | int res, tmp; \ | |
| 51 | \ | |
| 52 | __asm__ __volatile__ ( \ | |
| 53 | " .align 2 \n\t" \ | |
| 54 | " mova 1f, r0 \n\t" /* r0 = end point */ \ | |
| 55 | " mov r15, r1 \n\t" /* r1 = saved sp */ \ | |
| 56 | " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \ | |
| 57 | " mov.l @%2, %0 \n\t" /* load old value */ \ | |
| 58 | " mov %0, %1 \n\t" /* save old value */ \ | |
| 59 | " " #op " %3, %0 \n\t" /* $op */ \ | |
| 60 | " mov.l %0, @%2 \n\t" /* store new value */ \ | |
| 61 | "1: mov r1, r15 \n\t" /* LOGOUT */ \ | |
| 62 | : "=&r" (tmp), "=&r" (res), "+r" (v) \ | |
| 63 | : "r" (i) \ | |
| 64 | : "memory" , "r0", "r1"); \ | |
| 65 | \ | |
| 66 | return res; \ | |
| 67 | } | |
| 68 | ||
| 69 | #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op) | |
| 1efe4ce3 | 70 | |
| c6470150 PZ |
71 | ATOMIC_OPS(add) |
| 72 | ATOMIC_OPS(sub) | |
| 1efe4ce3 | 73 | |
| 7d9794e7 PZ |
74 | #undef ATOMIC_OPS |
| 75 | #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) | |
| 76 | ||
| 77 | ATOMIC_OPS(and) | |
| 78 | ATOMIC_OPS(or) | |
| 79 | ATOMIC_OPS(xor) | |
| 658aa514 | 80 | |
| c6470150 | 81 | #undef ATOMIC_OPS |
| 7d9794e7 | 82 | #undef ATOMIC_FETCH_OP |
| c6470150 PZ |
83 | #undef ATOMIC_OP_RETURN |
| 84 | #undef ATOMIC_OP | |
| 1efe4ce3 | 85 | |
| 1efe4ce3 | 86 | #endif /* __ASM_SH_ATOMIC_GRB_H */ |