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Diffstat (limited to 'arch/sh/include/asm/futex-irq.h')
-rw-r--r--arch/sh/include/asm/futex-irq.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/sh/include/asm/futex-irq.h b/arch/sh/include/asm/futex-irq.h
new file mode 100644
index 000000000..63d33129e
--- /dev/null
+++ b/arch/sh/include/asm/futex-irq.h
@@ -0,0 +1,110 @@
+#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 */