#ifndef _ASM_GENERIC_FUTEX_H
  #define _ASM_GENERIC_FUTEX_H

  #include <linux/futex.h>

  #include <linux/uaccess.h>

  #include <asm/errno.h>

  
  static inline int

  futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)

  {
  	int op = (encoded_op >> 28) & 7;
  	int cmp = (encoded_op >> 24) & 15;
  	int oparg = (encoded_op << 8) >> 20;
  	int cmparg = (encoded_op << 20) >> 20;
  	int oldval = 0, ret;
  	if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
  		oparg = 1 << oparg;

  	if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))

  		return -EFAULT;

  	pagefault_disable();

  
  	switch (op) {
  	case FUTEX_OP_SET:
  	case FUTEX_OP_ADD:
  	case FUTEX_OP_OR:
  	case FUTEX_OP_ANDN:
  	case FUTEX_OP_XOR:
  	default:
  		ret = -ENOSYS;
  	}

  	pagefault_enable();

  
  	if (!ret) {
  		switch (cmp) {
  		case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break;
  		case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break;
  		case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break;
  		case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break;
  		case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break;
  		case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break;
  		default: ret = -ENOSYS;
  		}
  	}
  	return ret;
  }

  static inline int

  futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
  			      u32 oldval, u32 newval)

  {
  	return -ENOSYS;
  }

  #endif