MIPS: Move headfiles to new location below arch/mips/include

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 852 deletions

diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
deleted file mode 100644
index b895144d577a..000000000000
--- a/include/asm-mips/uaccess.h
+++ /dev/null
@@ -1,852 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 03, 04 by Ralf Baechle
- * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
- * Copyright (C) 2007  Maciej W. Rozycki
- */
-#ifndef _ASM_UACCESS_H
-#define _ASM_UACCESS_H
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/thread_info.h>
-#include <asm-generic/uaccess.h>
-
-/*
- * The fs value determines whether argument validity checking should be
- * performed or not.  If get_fs() == USER_DS, checking is performed, with
- * get_fs() == KERNEL_DS, checking is bypassed.
- *
- * For historical reasons, these macros are grossly misnamed.
- */
-#ifdef CONFIG_32BIT
-
-#define __UA_LIMIT	0x80000000UL
-
-#define __UA_ADDR	".word"
-#define __UA_LA		"la"
-#define __UA_ADDU	"addu"
-#define __UA_t0		"$8"
-#define __UA_t1		"$9"
-
-#endif /* CONFIG_32BIT */
-
-#ifdef CONFIG_64BIT
-
-#define __UA_LIMIT	(- TASK_SIZE)
-
-#define __UA_ADDR	".dword"
-#define __UA_LA		"dla"
-#define __UA_ADDU	"daddu"
-#define __UA_t0		"$12"
-#define __UA_t1		"$13"
-
-#endif /* CONFIG_64BIT */
-
-/*
- * USER_DS is a bitmask that has the bits set that may not be set in a valid
- * userspace address.  Note that we limit 32-bit userspace to 0x7fff8000 but
- * the arithmetic we're doing only works if the limit is a power of two, so
- * we use 0x80000000 here on 32-bit kernels.  If a process passes an invalid
- * address in this range it's the process's problem, not ours :-)
- */
-
-#define KERNEL_DS	((mm_segment_t) { 0UL })
-#define USER_DS		((mm_segment_t) { __UA_LIMIT })
-
-#define VERIFY_READ    0
-#define VERIFY_WRITE   1
-
-#define get_ds()	(KERNEL_DS)
-#define get_fs()	(current_thread_info()->addr_limit)
-#define set_fs(x)	(current_thread_info()->addr_limit = (x))
-
-#define segment_eq(a, b)	((a).seg == (b).seg)
-
-
-/*
- * Is a address valid? This does a straighforward calculation rather
- * than tests.
- *
- * Address valid if:
- *  - "addr" doesn't have any high-bits set
- *  - AND "size" doesn't have any high-bits set
- *  - AND "addr+size" doesn't have any high-bits set
- *  - OR we are in kernel mode.
- *
- * __ua_size() is a trick to avoid runtime checking of positive constant
- * sizes; for those we already know at compile time that the size is ok.
- */
-#define __ua_size(size)							\
-	((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size))
-
-/*
- * access_ok: - Checks if a user space pointer is valid
- * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE.  Note that
- *        %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
- *        to write to a block, it is always safe to read from it.
- * @addr: User space pointer to start of block to check
- * @size: Size of block to check
- *
- * Context: User context only.  This function may sleep.
- *
- * Checks if a pointer to a block of memory in user space is valid.
- *
- * Returns true (nonzero) if the memory block may be valid, false (zero)
- * if it is definitely invalid.
- *
- * Note that, depending on architecture, this function probably just
- * checks that the pointer is in the user space range - after calling
- * this function, memory access functions may still return -EFAULT.
- */
-
-#define __access_mask get_fs().seg
-
-#define __access_ok(addr, size, mask)					\
-	(((signed long)((mask) & ((addr) | ((addr) + (size)) | __ua_size(size)))) == 0)
-
-#define access_ok(type, addr, size)					\
-	likely(__access_ok((unsigned long)(addr), (size), __access_mask))
-
-/*
- * put_user: - Write a simple value into user space.
- * @x:   Value to copy to user space.
- * @ptr: Destination address, in user space.
- *
- * Context: User context only.  This function may sleep.
- *
- * This macro copies a single simple value from kernel space to user
- * space.  It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and @x must be assignable
- * to the result of dereferencing @ptr.
- *
- * Returns zero on success, or -EFAULT on error.
- */
-#define put_user(x,ptr)	\
-	__put_user_check((x), (ptr), sizeof(*(ptr)))
-
-/*
- * get_user: - Get a simple variable from user space.
- * @x:   Variable to store result.
- * @ptr: Source address, in user space.
- *
- * Context: User context only.  This function may sleep.
- *
- * This macro copies a single simple variable from user space to kernel
- * space.  It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and the result of
- * dereferencing @ptr must be assignable to @x without a cast.
- *
- * Returns zero on success, or -EFAULT on error.
- * On error, the variable @x is set to zero.
- */
-#define get_user(x,ptr) \
-	__get_user_check((x), (ptr), sizeof(*(ptr)))
-
-/*
- * __put_user: - Write a simple value into user space, with less checking.
- * @x:   Value to copy to user space.
- * @ptr: Destination address, in user space.
- *
- * Context: User context only.  This function may sleep.
- *
- * This macro copies a single simple value from kernel space to user
- * space.  It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and @x must be assignable
- * to the result of dereferencing @ptr.
- *
- * Caller must check the pointer with access_ok() before calling this
- * function.
- *
- * Returns zero on success, or -EFAULT on error.
- */
-#define __put_user(x,ptr) \
-	__put_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-/*
- * __get_user: - Get a simple variable from user space, with less checking.
- * @x:   Variable to store result.
- * @ptr: Source address, in user space.
- *
- * Context: User context only.  This function may sleep.
- *
- * This macro copies a single simple variable from user space to kernel
- * space.  It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and the result of
- * dereferencing @ptr must be assignable to @x without a cast.
- *
- * Caller must check the pointer with access_ok() before calling this
- * function.
- *
- * Returns zero on success, or -EFAULT on error.
- * On error, the variable @x is set to zero.
- */
-#define __get_user(x,ptr) \
-	__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct __user *)(x))
-
-/*
- * Yuck.  We need two variants, one for 64bit operation and one
- * for 32 bit mode and old iron.
- */
-#ifdef CONFIG_32BIT
-#define __GET_USER_DW(val, ptr) __get_user_asm_ll32(val, ptr)
-#endif
-#ifdef CONFIG_64BIT
-#define __GET_USER_DW(val, ptr) __get_user_asm(val, "ld", ptr)
-#endif
-
-extern void __get_user_unknown(void);
-
-#define __get_user_common(val, size, ptr)				\
-do {									\
-	switch (size) {							\
-	case 1: __get_user_asm(val, "lb", ptr); break;			\
-	case 2: __get_user_asm(val, "lh", ptr); break;			\
-	case 4: __get_user_asm(val, "lw", ptr); break;			\
-	case 8: __GET_USER_DW(val, ptr); break;				\
-	default: __get_user_unknown(); break;				\
-	}								\
-} while (0)
-
-#define __get_user_nocheck(x, ptr, size)				\
-({									\
-	int __gu_err;							\
-									\
-	__get_user_common((x), size, ptr);				\
-	__gu_err;							\
-})
-
-#define __get_user_check(x, ptr, size)					\
-({									\
-	int __gu_err = -EFAULT;						\
-	const __typeof__(*(ptr)) __user * __gu_ptr = (ptr);		\
-									\
-	if (likely(access_ok(VERIFY_READ,  __gu_ptr, size)))		\
-		__get_user_common((x), size, __gu_ptr);			\
-									\
-	__gu_err;							\
-})
-
-#define __get_user_asm(val, insn, addr)					\
-{									\
-	long __gu_tmp;							\
-									\
-	__asm__ __volatile__(						\
-	"1:	" insn "	%1, %3				\n"	\
-	"2:							\n"	\
-	"	.section .fixup,\"ax\"				\n"	\
-	"3:	li	%0, %4					\n"	\
-	"	j	2b					\n"	\
-	"	.previous					\n"	\
-	"	.section __ex_table,\"a\"			\n"	\
-	"	"__UA_ADDR "\t1b, 3b				\n"	\
-	"	.previous					\n"	\
-	: "=r" (__gu_err), "=r" (__gu_tmp)				\
-	: "0" (0), "o" (__m(addr)), "i" (-EFAULT));			\
-									\
-	(val) = (__typeof__(*(addr))) __gu_tmp;				\
-}
-
-/*
- * Get a long long 64 using 32 bit registers.
- */
-#define __get_user_asm_ll32(val, addr)					\
-{									\
-	union {								\
-		unsigned long long	l;				\
-		__typeof__(*(addr))	t;				\
-	} __gu_tmp;							\
-									\
-	__asm__ __volatile__(						\
-	"1:	lw	%1, (%3)				\n"	\
-	"2:	lw	%D1, 4(%3)				\n"	\
-	"3:	.section	.fixup,\"ax\"			\n"	\
-	"4:	li	%0, %4					\n"	\
-	"	move	%1, $0					\n"	\
-	"	move	%D1, $0					\n"	\
-	"	j	3b					\n"	\
-	"	.previous					\n"	\
-	"	.section	__ex_table,\"a\"		\n"	\
-	"	" __UA_ADDR "	1b, 4b				\n"	\
-	"	" __UA_ADDR "	2b, 4b				\n"	\
-	"	.previous					\n"	\
-	: "=r" (__gu_err), "=&r" (__gu_tmp.l)				\
-	: "0" (0), "r" (addr), "i" (-EFAULT));				\
-									\
-	(val) = __gu_tmp.t;						\
-}
-
-/*
- * Yuck.  We need two variants, one for 64bit operation and one
- * for 32 bit mode and old iron.
- */
-#ifdef CONFIG_32BIT
-#define __PUT_USER_DW(ptr) __put_user_asm_ll32(ptr)
-#endif
-#ifdef CONFIG_64BIT
-#define __PUT_USER_DW(ptr) __put_user_asm("sd", ptr)
-#endif
-
-#define __put_user_nocheck(x, ptr, size)				\
-({									\
-	__typeof__(*(ptr)) __pu_val;					\
-	int __pu_err = 0;						\
-									\
-	__pu_val = (x);							\
-	switch (size) {							\
-	case 1: __put_user_asm("sb", ptr); break;			\
-	case 2: __put_user_asm("sh", ptr); break;			\
-	case 4: __put_user_asm("sw", ptr); break;			\
-	case 8: __PUT_USER_DW(ptr); break;				\
-	default: __put_user_unknown(); break;				\
-	}								\
-	__pu_err;							\
-})
-
-#define __put_user_check(x, ptr, size)					\
-({									\
-	__typeof__(*(ptr)) __user *__pu_addr = (ptr);			\
-	__typeof__(*(ptr)) __pu_val = (x);				\
-	int __pu_err = -EFAULT;						\
-									\
-	if (likely(access_ok(VERIFY_WRITE,  __pu_addr, size))) {	\
-		switch (size) {						\
-		case 1: __put_user_asm("sb", __pu_addr); break;		\
-		case 2: __put_user_asm("sh", __pu_addr); break;		\
-		case 4: __put_user_asm("sw", __pu_addr); break;		\
-		case 8: __PUT_USER_DW(__pu_addr); break;		\
-		default: __put_user_unknown(); break;			\
-		}							\
-	}								\
-	__pu_err;							\
-})
-
-#define __put_user_asm(insn, ptr)					\
-{									\
-	__asm__ __volatile__(						\
-	"1:	" insn "	%z2, %3		# __put_user_asm\n"	\
-	"2:							\n"	\
-	"	.section	.fixup,\"ax\"			\n"	\
-	"3:	li	%0, %4					\n"	\
-	"	j	2b					\n"	\
-	"	.previous					\n"	\
-	"	.section	__ex_table,\"a\"		\n"	\
-	"	" __UA_ADDR "	1b, 3b				\n"	\
-	"	.previous					\n"	\
-	: "=r" (__pu_err)						\
-	: "0" (0), "Jr" (__pu_val), "o" (__m(ptr)),			\
-	  "i" (-EFAULT));						\
-}
-
-#define __put_user_asm_ll32(ptr)					\
-{									\
-	__asm__ __volatile__(						\
-	"1:	sw	%2, (%3)	# __put_user_asm_ll32	\n"	\
-	"2:	sw	%D2, 4(%3)				\n"	\
-	"3:							\n"	\
-	"	.section	.fixup,\"ax\"			\n"	\
-	"4:	li	%0, %4					\n"	\
-	"	j	3b					\n"	\
-	"	.previous					\n"	\
-	"	.section	__ex_table,\"a\"		\n"	\
-	"	" __UA_ADDR "	1b, 4b				\n"	\
-	"	" __UA_ADDR "	2b, 4b				\n"	\
-	"	.previous"						\
-	: "=r" (__pu_err)						\
-	: "0" (0), "r" (__pu_val), "r" (ptr),				\
-	  "i" (-EFAULT));						\
-}
-
-extern void __put_user_unknown(void);
-
-/*
- * We're generating jump to subroutines which will be outside the range of
- * jump instructions
- */
-#ifdef MODULE
-#define __MODULE_JAL(destination)					\
-	".set\tnoat\n\t"						\
-	__UA_LA "\t$1, " #destination "\n\t" 				\
-	"jalr\t$1\n\t"							\
-	".set\tat\n\t"
-#else
-#define __MODULE_JAL(destination)					\
-	"jal\t" #destination "\n\t"
-#endif
-
-#ifndef CONFIG_CPU_DADDI_WORKAROUNDS
-#define DADDI_SCRATCH "$0"
-#else
-#define DADDI_SCRATCH "$3"
-#endif
-
-extern size_t __copy_user(void *__to, const void *__from, size_t __n);
-
-#define __invoke_copy_to_user(to, from, n)				\
-({									\
-	register void __user *__cu_to_r __asm__("$4");			\
-	register const void *__cu_from_r __asm__("$5");			\
-	register long __cu_len_r __asm__("$6");				\
-									\
-	__cu_to_r = (to);						\
-	__cu_from_r = (from);						\
-	__cu_len_r = (n);						\
-	__asm__ __volatile__(						\
-	__MODULE_JAL(__copy_user)					\
-	: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r)	\
-	:								\
-	: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31",		\
-	  DADDI_SCRATCH, "memory");					\
-	__cu_len_r;							\
-})
-
-/*
- * __copy_to_user: - Copy a block of data into user space, with less checking.
- * @to:   Destination address, in user space.
- * @from: Source address, in kernel space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from kernel space to user space.  Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- */
-#define __copy_to_user(to, from, n)					\
-({									\
-	void __user *__cu_to;						\
-	const void *__cu_from;						\
-	long __cu_len;							\
-									\
-	might_sleep();							\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	__cu_len = __invoke_copy_to_user(__cu_to, __cu_from, __cu_len);	\
-	__cu_len;							\
-})
-
-extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
-
-#define __copy_to_user_inatomic(to, from, n)				\
-({									\
-	void __user *__cu_to;						\
-	const void *__cu_from;						\
-	long __cu_len;							\
-									\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	__cu_len = __invoke_copy_to_user(__cu_to, __cu_from, __cu_len);	\
-	__cu_len;							\
-})
-
-#define __copy_from_user_inatomic(to, from, n)				\
-({									\
-	void *__cu_to;							\
-	const void __user *__cu_from;					\
-	long __cu_len;							\
-									\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	__cu_len = __invoke_copy_from_user_inatomic(__cu_to, __cu_from,	\
-	                                            __cu_len);		\
-	__cu_len;							\
-})
-
-/*
- * copy_to_user: - Copy a block of data into user space.
- * @to:   Destination address, in user space.
- * @from: Source address, in kernel space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from kernel space to user space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- */
-#define copy_to_user(to, from, n)					\
-({									\
-	void __user *__cu_to;						\
-	const void *__cu_from;						\
-	long __cu_len;							\
-									\
-	might_sleep();							\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	if (access_ok(VERIFY_WRITE, __cu_to, __cu_len))			\
-		__cu_len = __invoke_copy_to_user(__cu_to, __cu_from,	\
-		                                 __cu_len);		\
-	__cu_len;							\
-})
-
-#define __invoke_copy_from_user(to, from, n)				\
-({									\
-	register void *__cu_to_r __asm__("$4");				\
-	register const void __user *__cu_from_r __asm__("$5");		\
-	register long __cu_len_r __asm__("$6");				\
-									\
-	__cu_to_r = (to);						\
-	__cu_from_r = (from);						\
-	__cu_len_r = (n);						\
-	__asm__ __volatile__(						\
-	".set\tnoreorder\n\t"						\
-	__MODULE_JAL(__copy_user)					\
-	".set\tnoat\n\t"						\
-	__UA_ADDU "\t$1, %1, %2\n\t"					\
-	".set\tat\n\t"							\
-	".set\treorder"							\
-	: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r)	\
-	:								\
-	: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31",		\
-	  DADDI_SCRATCH, "memory");					\
-	__cu_len_r;							\
-})
-
-#define __invoke_copy_from_user_inatomic(to, from, n)			\
-({									\
-	register void *__cu_to_r __asm__("$4");				\
-	register const void __user *__cu_from_r __asm__("$5");		\
-	register long __cu_len_r __asm__("$6");				\
-									\
-	__cu_to_r = (to);						\
-	__cu_from_r = (from);						\
-	__cu_len_r = (n);						\
-	__asm__ __volatile__(						\
-	".set\tnoreorder\n\t"						\
-	__MODULE_JAL(__copy_user_inatomic)				\
-	".set\tnoat\n\t"						\
-	__UA_ADDU "\t$1, %1, %2\n\t"					\
-	".set\tat\n\t"							\
-	".set\treorder"							\
-	: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r)	\
-	:								\
-	: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31",		\
-	  DADDI_SCRATCH, "memory");					\
-	__cu_len_r;							\
-})
-
-/*
- * __copy_from_user: - Copy a block of data from user space, with less checking.
- * @to:   Destination address, in kernel space.
- * @from: Source address, in user space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from user space to kernel space.  Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- *
- * If some data could not be copied, this function will pad the copied
- * data to the requested size using zero bytes.
- */
-#define __copy_from_user(to, from, n)					\
-({									\
-	void *__cu_to;							\
-	const void __user *__cu_from;					\
-	long __cu_len;							\
-									\
-	might_sleep();							\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	__cu_len = __invoke_copy_from_user(__cu_to, __cu_from,		\
-	                                   __cu_len);			\
-	__cu_len;							\
-})
-
-/*
- * copy_from_user: - Copy a block of data from user space.
- * @to:   Destination address, in kernel space.
- * @from: Source address, in user space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from user space to kernel space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- *
- * If some data could not be copied, this function will pad the copied
- * data to the requested size using zero bytes.
- */
-#define copy_from_user(to, from, n)					\
-({									\
-	void *__cu_to;							\
-	const void __user *__cu_from;					\
-	long __cu_len;							\
-									\
-	might_sleep();							\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	if (access_ok(VERIFY_READ, __cu_from, __cu_len))		\
-		__cu_len = __invoke_copy_from_user(__cu_to, __cu_from,	\
-		                                   __cu_len);		\
-	__cu_len;							\
-})
-
-#define __copy_in_user(to, from, n)	__copy_from_user(to, from, n)
-
-#define copy_in_user(to, from, n)					\
-({									\
-	void __user *__cu_to;						\
-	const void __user *__cu_from;					\
-	long __cu_len;							\
-									\
-	might_sleep();							\
-	__cu_to = (to);							\
-	__cu_from = (from);						\
-	__cu_len = (n);							\
-	if (likely(access_ok(VERIFY_READ, __cu_from, __cu_len) &&	\
-	           access_ok(VERIFY_WRITE, __cu_to, __cu_len)))		\
-		__cu_len = __invoke_copy_from_user(__cu_to, __cu_from,	\
-		                                   __cu_len);		\
-	__cu_len;							\
-})
-
-/*
- * __clear_user: - Zero a block of memory in user space, with less checking.
- * @to:   Destination address, in user space.
- * @n:    Number of bytes to zero.
- *
- * Zero a block of memory in user space.  Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be cleared.
- * On success, this will be zero.
- */
-static inline __kernel_size_t
-__clear_user(void __user *addr, __kernel_size_t size)
-{
-	__kernel_size_t res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		"move\t$5, $0\n\t"
-		"move\t$6, %2\n\t"
-		__MODULE_JAL(__bzero)
-		"move\t%0, $6"
-		: "=r" (res)
-		: "r" (addr), "r" (size)
-		: "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
-
-	return res;
-}
-
-#define clear_user(addr,n)						\
-({									\
-	void __user * __cl_addr = (addr);				\
-	unsigned long __cl_size = (n);					\
-	if (__cl_size && access_ok(VERIFY_WRITE,			\
-		((unsigned long)(__cl_addr)), __cl_size))		\
-		__cl_size = __clear_user(__cl_addr, __cl_size);		\
-	__cl_size;							\
-})
-
-/*
- * __strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking.
- * @dst:   Destination address, in kernel space.  This buffer must be at
- *         least @count bytes long.
- * @src:   Source address, in user space.
- * @count: Maximum number of bytes to copy, including the trailing NUL.
- *
- * Copies a NUL-terminated string from userspace to kernel space.
- * Caller must check the specified block with access_ok() before calling
- * this function.
- *
- * On success, returns the length of the string (not including the trailing
- * NUL).
- *
- * If access to userspace fails, returns -EFAULT (some data may have been
- * copied).
- *
- * If @count is smaller than the length of the string, copies @count bytes
- * and returns @count.
- */
-static inline long
-__strncpy_from_user(char *__to, const char __user *__from, long __len)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		"move\t$5, %2\n\t"
-		"move\t$6, %3\n\t"
-		__MODULE_JAL(__strncpy_from_user_nocheck_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (__to), "r" (__from), "r" (__len)
-		: "$2", "$3", "$4", "$5", "$6", __UA_t0, "$31", "memory");
-
-	return res;
-}
-
-/*
- * strncpy_from_user: - Copy a NUL terminated string from userspace.
- * @dst:   Destination address, in kernel space.  This buffer must be at
- *         least @count bytes long.
- * @src:   Source address, in user space.
- * @count: Maximum number of bytes to copy, including the trailing NUL.
- *
- * Copies a NUL-terminated string from userspace to kernel space.
- *
- * On success, returns the length of the string (not including the trailing
- * NUL).
- *
- * If access to userspace fails, returns -EFAULT (some data may have been
- * copied).
- *
- * If @count is smaller than the length of the string, copies @count bytes
- * and returns @count.
- */
-static inline long
-strncpy_from_user(char *__to, const char __user *__from, long __len)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		"move\t$5, %2\n\t"
-		"move\t$6, %3\n\t"
-		__MODULE_JAL(__strncpy_from_user_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (__to), "r" (__from), "r" (__len)
-		: "$2", "$3", "$4", "$5", "$6", __UA_t0, "$31", "memory");
-
-	return res;
-}
-
-/* Returns: 0 if bad, string length+1 (memory size) of string if ok */
-static inline long __strlen_user(const char __user *s)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		__MODULE_JAL(__strlen_user_nocheck_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (s)
-		: "$2", "$4", __UA_t0, "$31");
-
-	return res;
-}
-
-/*
- * strlen_user: - Get the size of a string in user space.
- * @str: The string to measure.
- *
- * Context: User context only.  This function may sleep.
- *
- * Get the size of a NUL-terminated string in user space.
- *
- * Returns the size of the string INCLUDING the terminating NUL.
- * On exception, returns 0.
- *
- * If there is a limit on the length of a valid string, you may wish to
- * consider using strnlen_user() instead.
- */
-static inline long strlen_user(const char __user *s)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		__MODULE_JAL(__strlen_user_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (s)
-		: "$2", "$4", __UA_t0, "$31");
-
-	return res;
-}
-
-/* Returns: 0 if bad, string length+1 (memory size) of string if ok */
-static inline long __strnlen_user(const char __user *s, long n)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		"move\t$5, %2\n\t"
-		__MODULE_JAL(__strnlen_user_nocheck_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (s), "r" (n)
-		: "$2", "$4", "$5", __UA_t0, "$31");
-
-	return res;
-}
-
-/*
- * strlen_user: - Get the size of a string in user space.
- * @str: The string to measure.
- *
- * Context: User context only.  This function may sleep.
- *
- * Get the size of a NUL-terminated string in user space.
- *
- * Returns the size of the string INCLUDING the terminating NUL.
- * On exception, returns 0.
- *
- * If there is a limit on the length of a valid string, you may wish to
- * consider using strnlen_user() instead.
- */
-static inline long strnlen_user(const char __user *s, long n)
-{
-	long res;
-
-	might_sleep();
-	__asm__ __volatile__(
-		"move\t$4, %1\n\t"
-		"move\t$5, %2\n\t"
-		__MODULE_JAL(__strnlen_user_asm)
-		"move\t%0, $2"
-		: "=r" (res)
-		: "r" (s), "r" (n)
-		: "$2", "$4", "$5", __UA_t0, "$31");
-
-	return res;
-}
-
-struct exception_table_entry
-{
-	unsigned long insn;
-	unsigned long nextinsn;
-};
-
-extern int fixup_exception(struct pt_regs *regs);
-
-#endif /* _ASM_UACCESS_H */