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Filename/usr/src/linux-headers-3.13.0-24/arch/sh/include/asm/futex-irq.h
Size1.81 kb
Permissionrw-r--r--
Ownerroot : root
Create time27-Apr-2025 09:50
Last modified20-Jan-2014 10:40
Last accessed07-Jul-2025 00:18
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#ifndef __ASM_SH_FUTEX_IRQ_H
#define __ASM_SH_FUTEX_IRQ_H


static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
int ret;

local_irq_save(flags);

ret = get_user(*oldval, uaddr);
if (!ret)
ret = put_user(oparg, uaddr);

local_irq_restore(flags);

return ret;
}

static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
int ret;

local_irq_save(flags);

ret = get_user(*oldval, uaddr);
if (!ret)
ret = put_user(*oldval + oparg, uaddr);

local_irq_restore(flags);

return ret;
}

static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
int ret;

local_irq_save(flags);

ret = get_user(*oldval, uaddr);
if (!ret)
ret = put_user(*oldval | oparg, uaddr);

local_irq_restore(flags);

return ret;
}

static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
int ret;

local_irq_save(flags);

ret = get_user(*oldval, uaddr);
if (!ret)
ret = put_user(*oldval & oparg, uaddr);

local_irq_restore(flags);

return ret;
}

static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
int ret;

local_irq_save(flags);

ret = get_user(*oldval, uaddr);
if (!ret)
ret = put_user(*oldval ^ oparg, uaddr);

local_irq_restore(flags);

return ret;
}

static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
u32 __user *uaddr,
u32 oldval, u32 newval)
{
unsigned long flags;
int ret;
u32 prev = 0;

local_irq_save(flags);

ret = get_user(prev, uaddr);
if (!ret && oldval == prev)
ret = put_user(newval, uaddr);

local_irq_restore(flags);

*uval = prev;
return ret;
}

#endif /* __ASM_SH_FUTEX_IRQ_H */