mirror of https://gitee.com/openkylin/linux.git
111 lines
1.8 KiB
C
111 lines
1.8 KiB
C
#ifndef __ASM_SH_FUTEX_IRQ_H
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#define __ASM_SH_FUTEX_IRQ_H
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static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval + oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval | oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval & oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval ^ oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
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u32 __user *uaddr,
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u32 oldval, u32 newval)
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{
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unsigned long flags;
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int ret;
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u32 prev = 0;
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local_irq_save(flags);
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ret = get_user(prev, uaddr);
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if (!ret && oldval == prev)
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ret = put_user(newval, uaddr);
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local_irq_restore(flags);
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*uval = prev;
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return ret;
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}
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#endif /* __ASM_SH_FUTEX_IRQ_H */
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