1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_SH_FUTEX_IRQ_H
 3#define __ASM_SH_FUTEX_IRQ_H
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 4
 5static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
 6						   u32 __user *uaddr,
 7						   u32 oldval, u32 newval)
 8{
 9	unsigned long flags;
10	int ret;
11	u32 prev = 0;
12
13	local_irq_save(flags);
14
15	ret = get_user(prev, uaddr);
16	if (!ret && oldval == prev)
17		ret = put_user(newval, uaddr);
18
19	local_irq_restore(flags);
20
21	*uval = prev;
22	return ret;
23}
24
25#endif /* __ASM_SH_FUTEX_IRQ_H */

 
  1#ifndef __ASM_SH_FUTEX_IRQ_H
  2#define __ASM_SH_FUTEX_IRQ_H
  3
  4
  5static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
  6					   int *oldval)
  7{
  8	unsigned long flags;
  9	int ret;
 10
 11	local_irq_save(flags);
 12
 13	ret = get_user(*oldval, uaddr);
 14	if (!ret)
 15		ret = put_user(oparg, uaddr);
 16
 17	local_irq_restore(flags);
 18
 19	return ret;
 20}
 21
 22static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
 23					   int *oldval)
 24{
 25	unsigned long flags;
 26	int ret;
 27
 28	local_irq_save(flags);
 29
 30	ret = get_user(*oldval, uaddr);
 31	if (!ret)
 32		ret = put_user(*oldval + oparg, uaddr);
 33
 34	local_irq_restore(flags);
 35
 36	return ret;
 37}
 38
 39static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
 40					  int *oldval)
 41{
 42	unsigned long flags;
 43	int ret;
 44
 45	local_irq_save(flags);
 46
 47	ret = get_user(*oldval, uaddr);
 48	if (!ret)
 49		ret = put_user(*oldval | oparg, uaddr);
 50
 51	local_irq_restore(flags);
 52
 53	return ret;
 54}
 55
 56static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
 57					   int *oldval)
 58{
 59	unsigned long flags;
 60	int ret;
 61
 62	local_irq_save(flags);
 63
 64	ret = get_user(*oldval, uaddr);
 65	if (!ret)
 66		ret = put_user(*oldval & oparg, uaddr);
 67
 68	local_irq_restore(flags);
 69
 70	return ret;
 71}
 72
 73static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
 74					   int *oldval)
 75{
 76	unsigned long flags;
 77	int ret;
 78
 79	local_irq_save(flags);
 80
 81	ret = get_user(*oldval, uaddr);
 82	if (!ret)
 83		ret = put_user(*oldval ^ oparg, uaddr);
 84
 85	local_irq_restore(flags);
 86
 87	return ret;
 88}
 89
 90static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
 91						   u32 __user *uaddr,
 92						   u32 oldval, u32 newval)
 93{
 94	unsigned long flags;
 95	int ret;
 96	u32 prev = 0;
 97
 98	local_irq_save(flags);
 99
100	ret = get_user(prev, uaddr);
101	if (!ret && oldval == prev)
102		ret = put_user(newval, uaddr);
103
104	local_irq_restore(flags);
105
106	*uval = prev;
107	return ret;
108}
109
110#endif /* __ASM_SH_FUTEX_IRQ_H */