uaccess.h

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		"	move.d $r9,[%0+]\n8:\n" COPY,	\
		"9:	addq 4,%2\n" FIXUP,		\
		"	.dword 8b,9b\n" TENTRY)

#define __asm_copy_to_user_16(to, from, ret) \
	__asm_copy_to_user_16x_cont(to, from, ret, "", "", "")

#define __asm_copy_to_user_20x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
	__asm_copy_to_user_16x_cont(to, from, ret,	\
		"	move.d [%1+],$r9\n"		\
		"	move.d $r9,[%0+]\n10:\n" COPY,	\
		"11:	addq 4,%2\n" FIXUP,		\
		"	.dword 10b,11b\n" TENTRY)

#define __asm_copy_to_user_20(to, from, ret) \
	__asm_copy_to_user_20x_cont(to, from, ret, "", "", "")

#define __asm_copy_to_user_24x_cont(to, from, ret, COPY, FIXUP, TENTRY)	\
	__asm_copy_to_user_20x_cont(to, from, ret,	\
		"	move.d [%1+],$r9\n"		\
		"	move.d $r9,[%0+]\n12:\n" COPY,	\
		"13:	addq 4,%2\n" FIXUP,		\
		"	.dword 12b,13b\n" TENTRY)

#define __asm_copy_to_user_24(to, from, ret)	\
	__asm_copy_to_user_24x_cont(to, from, ret, "", "", "")

/* Define a few clearing asms with exception handlers.  */

/* This frame-asm is like the __asm_copy_user_cont one, but has one less
   input.  */

#define __asm_clear(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm__ __volatile__ (				\
			CLEAR				\
		"1:\n"					\
		"	.section .fixup,\"ax\"\n"	\
			FIXUP				\
		"	jump 1b\n"			\
		"	.previous\n"			\
		"	.section __ex_table,\"a\"\n"	\
			TENTRY				\
		"	.previous"			\
		: "=r" (to), "=r" (ret)			\
		: "0" (to), "1" (ret)			\
		: "r9", "memory")

#define __asm_clear_1(to, ret) \
	__asm_clear(to, ret,			\
		"	clear.b [%0+]\n2:\n",	\
		"3:	addq 1,%1\n",		\
		"	.dword 2b,3b\n")

#define __asm_clear_2(to, ret) \
	__asm_clear(to, ret,			\
		"	clear.w [%0+]\n2:\n",	\
		"3:	addq 2,%1\n",		\
		"	.dword 2b,3b\n")

#define __asm_clear_3(to, ret) \
     __asm_clear(to, ret,			\
		 "	clear.w [%0+]\n"	\
		 "2:	clear.b [%0+]\n3:\n",	\
		 "4:	addq 2,%1\n"		\
		 "5:	addq 1,%1\n",		\
		 "	.dword 2b,4b\n"		\
		 "	.dword 3b,5b\n")

#define __asm_clear_4x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear(to, ret,				\
		"	clear.d [%0+]\n2:\n" CLEAR,	\
		"3:	addq 4,%1\n" FIXUP,		\
		"	.dword 2b,3b\n" TENTRY)

#define __asm_clear_4(to, ret) \
	__asm_clear_4x_cont(to, ret, "", "", "")

#define __asm_clear_8x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear_4x_cont(to, ret,			\
		"	clear.d [%0+]\n4:\n" CLEAR,	\
		"5:	addq 4,%1\n" FIXUP,		\
		"	.dword 4b,5b\n" TENTRY)

#define __asm_clear_8(to, ret) \
	__asm_clear_8x_cont(to, ret, "", "", "")

#define __asm_clear_12x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear_8x_cont(to, ret,			\
		"	clear.d [%0+]\n6:\n" CLEAR,	\
		"7:	addq 4,%1\n" FIXUP,		\
		"	.dword 6b,7b\n" TENTRY)

#define __asm_clear_12(to, ret) \
	__asm_clear_12x_cont(to, ret, "", "", "")

#define __asm_clear_16x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear_12x_cont(to, ret,			\
		"	clear.d [%0+]\n8:\n" CLEAR,	\
		"9:	addq 4,%1\n" FIXUP,		\
		"	.dword 8b,9b\n" TENTRY)

#define __asm_clear_16(to, ret) \
	__asm_clear_16x_cont(to, ret, "", "", "")

#define __asm_clear_20x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear_16x_cont(to, ret,			\
		"	clear.d [%0+]\n10:\n" CLEAR,	\
		"11:	addq 4,%1\n" FIXUP,		\
		"	.dword 10b,11b\n" TENTRY)

#define __asm_clear_20(to, ret) \
	__asm_clear_20x_cont(to, ret, "", "", "")

#define __asm_clear_24x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
	__asm_clear_20x_cont(to, ret,			\
		"	clear.d [%0+]\n12:\n" CLEAR,	\
		"13:	addq 4,%1\n" FIXUP,		\
		"	.dword 12b,13b\n" TENTRY)

#define __asm_clear_24(to, ret) \
	__asm_clear_24x_cont(to, ret, "", "", "")

/* Note that if these expand awfully if made into switch constructs, so
   don't do that.  */

static inline unsigned long
__constant_copy_from_user(void *to, const void *from, unsigned long n)
{
	unsigned long ret = 0;
	if (n == 0)
		;
	else if (n == 1)
		__asm_copy_from_user_1(to, from, ret);
	else if (n == 2)
		__asm_copy_from_user_2(to, from, ret);
	else if (n == 3)
		__asm_copy_from_user_3(to, from, ret);
	else if (n == 4)
		__asm_copy_from_user_4(to, from, ret);
	else if (n == 5)
		__asm_copy_from_user_5(to, from, ret);
	else if (n == 6)
		__asm_copy_from_user_6(to, from, ret);
	else if (n == 7)
		__asm_copy_from_user_7(to, from, ret);
	else if (n == 8)
		__asm_copy_from_user_8(to, from, ret);
	else if (n == 9)
		__asm_copy_from_user_9(to, from, ret);
	else if (n == 10)
		__asm_copy_from_user_10(to, from, ret);
	else if (n == 11)
		__asm_copy_from_user_11(to, from, ret);
	else if (n == 12)
		__asm_copy_from_user_12(to, from, ret);
	else if (n == 13)
		__asm_copy_from_user_13(to, from, ret);
	else if (n == 14)
		__asm_copy_from_user_14(to, from, ret);
	else if (n == 15)
		__asm_copy_from_user_15(to, from, ret);
	else if (n == 16)
		__asm_copy_from_user_16(to, from, ret);
	else if (n == 20)
		__asm_copy_from_user_20(to, from, ret);
	else if (n == 24)
		__asm_copy_from_user_24(to, from, ret);
	else
		ret = __generic_copy_from_user(to, from, n);

	return ret;
}

/* Ditto, don't make a switch out of this.  */

static inline unsigned long
__constant_copy_to_user(void *to, const void *from, unsigned long n)
{
	unsigned long ret = 0;
	if (n == 0)
		;
	else if (n == 1)
		__asm_copy_to_user_1(to, from, ret);
	else if (n == 2)
		__asm_copy_to_user_2(to, from, ret);
	else if (n == 3)
		__asm_copy_to_user_3(to, from, ret);
	else if (n == 4)
		__asm_copy_to_user_4(to, from, ret);
	else if (n == 5)
		__asm_copy_to_user_5(to, from, ret);
	else if (n == 6)
		__asm_copy_to_user_6(to, from, ret);
	else if (n == 7)
		__asm_copy_to_user_7(to, from, ret);
	else if (n == 8)
		__asm_copy_to_user_8(to, from, ret);
	else if (n == 9)
		__asm_copy_to_user_9(to, from, ret);
	else if (n == 10)
		__asm_copy_to_user_10(to, from, ret);
	else if (n == 11)
		__asm_copy_to_user_11(to, from, ret);
	else if (n == 12)
		__asm_copy_to_user_12(to, from, ret);
	else if (n == 13)
		__asm_copy_to_user_13(to, from, ret);
	else if (n == 14)
		__asm_copy_to_user_14(to, from, ret);
	else if (n == 15)
		__asm_copy_to_user_15(to, from, ret);
	else if (n == 16)
		__asm_copy_to_user_16(to, from, ret);
	else if (n == 20)
		__asm_copy_to_user_20(to, from, ret);
	else if (n == 24)
		__asm_copy_to_user_24(to, from, ret);
	else
		ret = __generic_copy_to_user(to, from, n);

	return ret;
}

/* No switch, please.  */

static inline unsigned long
__constant_clear_user(void *to, unsigned long n)
{
	unsigned long ret = 0;
	if (n == 0)
		;
	else if (n == 1)
		__asm_clear_1(to, ret);
	else if (n == 2)
		__asm_clear_2(to, ret);
	else if (n == 3)
		__asm_clear_3(to, ret);
	else if (n == 4)
		__asm_clear_4(to, ret);
	else if (n == 8)
		__asm_clear_8(to, ret);
	else if (n == 12)
		__asm_clear_12(to, ret);
	else if (n == 16)
		__asm_clear_16(to, ret);
	else if (n == 20)
		__asm_clear_20(to, ret);
	else if (n == 24)
		__asm_clear_24(to, ret);
	else
		ret = __generic_clear_user(to, n);

	return ret;
}


#define clear_user(to, n)			\
(__builtin_constant_p(n) ?			\
 __constant_clear_user(to, n) :			\
 __generic_clear_user(to, n))

#define copy_from_user(to, from, n)		\
(__builtin_constant_p(n) ?			\
 __constant_copy_from_user(to, from, n) :	\
 __generic_copy_from_user(to, from, n))

#define copy_to_user(to, from, n)		\
(__builtin_constant_p(n) ?			\
 __constant_copy_to_user(to, from, n) :		\
 __generic_copy_to_user(to, from, n))

#define copy_to_user_ret(to,from,n,retval) \
	do { if (copy_to_user(to,from,n)) return retval; } while (0)
#define copy_from_user_ret(to,from,n,retval) \
	do { if (copy_from_user(to,from,n)) return retval; } while (0)

/* We let the __ versions of copy_from/to_user inline, because they're often
 * used in fast paths and have only a small space overhead.
 */

static inline unsigned long
__generic_copy_from_user_nocheck(void *to, const void *from, unsigned long n)
{
	return __copy_user_zeroing(to,from,n);
}

static inline unsigned long
__generic_copy_to_user_nocheck(void *to, const void *from, unsigned long n)
{
	return __copy_user(to,from,n);
}

static inline unsigned long
__generic_clear_user_nocheck(void *to, unsigned long n)
{
	return __do_clear_user(to,n);
}

/* without checking */

#define __copy_to_user(to,from,n)   __generic_copy_to_user_nocheck((to),(from),(n))
#define __copy_from_user(to,from,n) __generic_copy_from_user_nocheck((to),(from),(n))
#define __clear_user(to,n) __generic_clear_user_nocheck((to),(n))

/*
 * Return the size of a string (including the ending 0)
 *
 * Return length of string in userspace including terminating 0
 * or 0 for error.  Return a value greater than N if too long.
 */

static inline long
strnlen_user(const char *s, long n)
{
	long res, tmp1;

	if (!access_ok(VERIFY_READ, s, 0))
		return 0;

	/*
	 * This code is deduced from:
	 *
	 *	tmp1 = n;
	 *	while (tmp1-- > 0 && *s++)
	 *	  ;
	 *
	 *	res = n - tmp1;
	 *
	 *  (with tweaks).
	 */

	__asm__ __volatile__ (
		"	move.d %1,$r9\n"
		"0:\n"
		"	ble 1f\n"
		"	subq 1,$r9\n"

		"	test.b [%0+]\n"
		"	bne 0b\n"
		"	test.d $r9\n"
		"1:\n"
		"	move.d %1,%0\n"
		"	sub.d $r9,%0\n"
		"2:\n"
		"	.section .fixup,\"ax\"\n"

		"3:	clear.d %0\n"
		"	jump 2b\n"

		/* There's one address for a fault at the first move, and
		   two possible PC values for a fault at the second move,
		   being a delay-slot filler.  However, the branch-target
		   for the second move is the same as the first address.
		   Just so you don't get confused...  */
		"	.previous\n"
		"	.section __ex_table,\"a\"\n"
		"	.dword 0b,3b\n"
		"	.dword 1b,3b\n"
		"	.previous\n"
		: "=r" (res), "=r" (tmp1)
		: "0" (s), "1" (n)
		: "r9");

	return res;
}

#define strlen_user(str)	strnlen_user((str), 0x7ffffffe)

#endif  /* __ASSEMBLY__ */

#endif	/* _CRIS_UACCESS_H */