1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __ASM_SH_ATOMIC_IRQ_H
3 #define __ASM_SH_ATOMIC_IRQ_H
4
5 #include <linux/irqflags.h>
6
7 /*
8 * To get proper branch prediction for the mai
9 * forward to code at the end of this object's
10 * branch back to restart the operation.
11 */
12
13 #define ATOMIC_OP(op, c_op)
14 static inline void arch_atomic_##op(int i, ato
15 {
16 unsigned long flags;
17
18 raw_local_irq_save(flags);
19 v->counter c_op i;
20 raw_local_irq_restore(flags);
21 }
22
23 #define ATOMIC_OP_RETURN(op, c_op)
24 static inline int arch_atomic_##op##_return(in
25 {
26 unsigned long temp, flags;
27
28 raw_local_irq_save(flags);
29 temp = v->counter;
30 temp c_op i;
31 v->counter = temp;
32 raw_local_irq_restore(flags);
33
34 return temp;
35 }
36
37 #define ATOMIC_FETCH_OP(op, c_op)
38 static inline int arch_atomic_fetch_##op(int i
39 {
40 unsigned long temp, flags;
41
42 raw_local_irq_save(flags);
43 temp = v->counter;
44 v->counter c_op i;
45 raw_local_irq_restore(flags);
46
47 return temp;
48 }
49
50 #define ATOMIC_OPS(op, c_op)
51 ATOMIC_OP(op, c_op)
52 ATOMIC_OP_RETURN(op, c_op)
53 ATOMIC_FETCH_OP(op, c_op)
54
55 ATOMIC_OPS(add, +=)
56 ATOMIC_OPS(sub, -=)
57
58 #define arch_atomic_add_return arch_atomic_ad
59 #define arch_atomic_sub_return arch_atomic_su
60 #define arch_atomic_fetch_add arch_atomic_fe
61 #define arch_atomic_fetch_sub arch_atomic_fe
62
63 #undef ATOMIC_OPS
64 #define ATOMIC_OPS(op, c_op)
65 ATOMIC_OP(op, c_op)
66 ATOMIC_FETCH_OP(op, c_op)
67
68 ATOMIC_OPS(and, &=)
69 ATOMIC_OPS(or, |=)
70 ATOMIC_OPS(xor, ^=)
71
72 #define arch_atomic_fetch_and arch_atomic_fe
73 #define arch_atomic_fetch_or arch_atomic_fe
74 #define arch_atomic_fetch_xor arch_atomic_fe
75
76 #undef ATOMIC_OPS
77 #undef ATOMIC_FETCH_OP
78 #undef ATOMIC_OP_RETURN
79 #undef ATOMIC_OP
80
81 #endif /* __ASM_SH_ATOMIC_IRQ_H */
82
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