return ret;
}
-static inline int
-futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
-{
- int prev;
-
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- __asm__ __volatile__ (
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%2 # futex_atomic_cmpxchg_inatomic\n\
- cmpw 0,%0,%3\n\
- bne- 3f\n"
- PPC405_ERR77(0,%2)
-"2: stwcx. %4,0,%2\n\
- bne- 1b\n"
- ISYNC_ON_SMP
-"3: .section .fixup,\"ax\"\n\
-4: li %0,%5\n\
- b 3b\n\
- .previous\n\
- .section __ex_table,\"a\"\n\
- .align 3\n\
- " PPC_LONG "1b,4b,2b,4b\n\
- .previous" \
- : "=&r" (prev), "+m" (*uaddr)
- : "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT)
- : "cc", "memory");
-
- return prev;
-}
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_FUTEX_H */