1 #ifndef __ASM_SH_FUTEX_H
2 #define __ASM_SH_FUTEX_H
6 #include <linux/futex.h>
7 #include <linux/uaccess.h>
10 #if !defined(CONFIG_SMP)
11 #include <asm/futex-irq.h>
12 #elif defined(CONFIG_CPU_J2)
13 #include <asm/futex-cas.h>
14 #elif defined(CONFIG_CPU_SH4A)
15 #include <asm/futex-llsc.h>
17 #error SMP not supported on this configuration.
21 futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
22 u32 oldval, u32 newval)
24 if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
27 return atomic_futex_op_cmpxchg_inatomic(uval, uaddr, oldval, newval);
30 static inline int arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval,
33 u32 oldval, newval, prev;
39 if (op == FUTEX_OP_SET)
42 ret = get_user(oldval, uaddr);
51 newval = oldval + oparg;
54 newval = oldval | oparg;
57 newval = oldval & ~oparg;
60 newval = oldval ^ oparg;
69 ret = futex_atomic_cmpxchg_inatomic(&prev, uaddr, oldval, newval);
70 } while (!ret && prev != oldval);
80 #endif /* __KERNEL__ */
81 #endif /* __ASM_SH_FUTEX_H */