1 #ifndef _ASM_M68K_FUTEX_H
2 #define _ASM_M68K_FUTEX_H
5 #if !defined(CONFIG_MMU)
6 #include <asm-generic/futex.h>
9 #include <linux/futex.h>
10 #include <linux/uaccess.h>
11 #include <asm/errno.h>
14 futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
15 u32 oldval, u32 newval)
19 if (unlikely(get_user(val, uaddr) != 0))
22 if (val == oldval && unlikely(put_user(newval, uaddr) != 0))
31 futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
33 int op = (encoded_op >> 28) & 7;
34 int cmp = (encoded_op >> 24) & 15;
35 int oparg = (encoded_op << 8) >> 20;
36 int cmparg = (encoded_op << 20) >> 20;
40 if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
43 pagefault_disable(); /* implies preempt_disable() */
46 if (unlikely(get_user(oldval, uaddr) != 0))
47 goto out_pagefault_enable;
72 if (ret == 0 && unlikely(put_user(tmp, uaddr) != 0))
76 pagefault_enable(); /* subsumes preempt_enable() */
80 case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break;
81 case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break;
82 case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break;
83 case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break;
84 case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break;
85 case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break;
86 default: ret = -ENOSYS;
92 #endif /* CONFIG_MMU */
93 #endif /* __KERNEL__ */
94 #endif /* _ASM_M68K_FUTEX_H */