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-rw-r--r--include/asm-avr32/uaccess.h324
1 files changed, 0 insertions, 324 deletions
diff --git a/include/asm-avr32/uaccess.h b/include/asm-avr32/uaccess.h
deleted file mode 100644
index ed092395215e..000000000000
--- a/include/asm-avr32/uaccess.h
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_AVR32_UACCESS_H
-#define __ASM_AVR32_UACCESS_H
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
-
-typedef struct {
- unsigned int is_user_space;
-} mm_segment_t;
-
-/*
- * 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 (Data Segment Register?), these macros are misnamed.
- */
-#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
-#define segment_eq(a,b) ((a).is_user_space == (b).is_user_space)
-
-#define USER_ADDR_LIMIT 0x80000000
-
-#define KERNEL_DS MAKE_MM_SEG(0)
-#define USER_DS MAKE_MM_SEG(1)
-
-#define get_ds() (KERNEL_DS)
-
-static inline mm_segment_t get_fs(void)
-{
- return MAKE_MM_SEG(test_thread_flag(TIF_USERSPACE));
-}
-
-static inline void set_fs(mm_segment_t s)
-{
- if (s.is_user_space)
- set_thread_flag(TIF_USERSPACE);
- else
- clear_thread_flag(TIF_USERSPACE);
-}
-
-/*
- * Test whether a block of memory is a valid user space address.
- * Returns 0 if the range is valid, nonzero otherwise.
- *
- * We do the following checks:
- * 1. Is the access from kernel space?
- * 2. Does (addr + size) set the carry bit?
- * 3. Is (addr + size) a negative number (i.e. >= 0x80000000)?
- *
- * If yes on the first check, access is granted.
- * If no on any of the others, access is denied.
- */
-#define __range_ok(addr, size) \
- (test_thread_flag(TIF_USERSPACE) \
- && (((unsigned long)(addr) >= 0x80000000) \
- || ((unsigned long)(size) > 0x80000000) \
- || (((unsigned long)(addr) + (unsigned long)(size)) > 0x80000000)))
-
-#define access_ok(type, addr, size) (likely(__range_ok(addr, size) == 0))
-
-/* Generic arbitrary sized copy. Return the number of bytes NOT copied */
-extern __kernel_size_t __copy_user(void *to, const void *from,
- __kernel_size_t n);
-
-extern __kernel_size_t copy_to_user(void __user *to, const void *from,
- __kernel_size_t n);
-extern __kernel_size_t copy_from_user(void *to, const void __user *from,
- __kernel_size_t n);
-
-static inline __kernel_size_t __copy_to_user(void __user *to, const void *from,
- __kernel_size_t n)
-{
- return __copy_user((void __force *)to, from, n);
-}
-static inline __kernel_size_t __copy_from_user(void *to,
- const void __user *from,
- __kernel_size_t n)
-{
- return __copy_user(to, (const void __force *)from, n);
-}
-
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-/*
- * 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)))
-
-extern int __get_user_bad(void);
-extern int __put_user_bad(void);
-
-#define __get_user_nocheck(x, ptr, size) \
-({ \
- unsigned long __gu_val = 0; \
- int __gu_err = 0; \
- \
- switch (size) { \
- case 1: __get_user_asm("ub", __gu_val, ptr, __gu_err); break; \
- case 2: __get_user_asm("uh", __gu_val, ptr, __gu_err); break; \
- case 4: __get_user_asm("w", __gu_val, ptr, __gu_err); break; \
- default: __gu_err = __get_user_bad(); break; \
- } \
- \
- x = (typeof(*(ptr)))__gu_val; \
- __gu_err; \
-})
-
-#define __get_user_check(x, ptr, size) \
-({ \
- unsigned long __gu_val = 0; \
- const typeof(*(ptr)) __user * __gu_addr = (ptr); \
- int __gu_err = 0; \
- \
- if (access_ok(VERIFY_READ, __gu_addr, size)) { \
- switch (size) { \
- case 1: \
- __get_user_asm("ub", __gu_val, __gu_addr, \
- __gu_err); \
- break; \
- case 2: \
- __get_user_asm("uh", __gu_val, __gu_addr, \
- __gu_err); \
- break; \
- case 4: \
- __get_user_asm("w", __gu_val, __gu_addr, \
- __gu_err); \
- break; \
- default: \
- __gu_err = __get_user_bad(); \
- break; \
- } \
- } else { \
- __gu_err = -EFAULT; \
- } \
- x = (typeof(*(ptr)))__gu_val; \
- __gu_err; \
-})
-
-#define __get_user_asm(suffix, __gu_val, ptr, __gu_err) \
- asm volatile( \
- "1: ld." suffix " %1, %3 \n" \
- "2: \n" \
- " .section .fixup, \"ax\" \n" \
- "3: mov %0, %4 \n" \
- " rjmp 2b \n" \
- " .previous \n" \
- " .section __ex_table, \"a\" \n" \
- " .long 1b, 3b \n" \
- " .previous \n" \
- : "=r"(__gu_err), "=r"(__gu_val) \
- : "0"(__gu_err), "m"(*(ptr)), "i"(-EFAULT))
-
-#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("b", ptr, __pu_val, __pu_err); break; \
- case 2: __put_user_asm("h", ptr, __pu_val, __pu_err); break; \
- case 4: __put_user_asm("w", ptr, __pu_val, __pu_err); break; \
- case 8: __put_user_asm("d", ptr, __pu_val, __pu_err); break; \
- default: __pu_err = __put_user_bad(); break; \
- } \
- __pu_err; \
-})
-
-#define __put_user_check(x, ptr, size) \
-({ \
- typeof(*(ptr)) __pu_val; \
- typeof(*(ptr)) __user *__pu_addr = (ptr); \
- int __pu_err = 0; \
- \
- __pu_val = (x); \
- if (access_ok(VERIFY_WRITE, __pu_addr, size)) { \
- switch (size) { \
- case 1: \
- __put_user_asm("b", __pu_addr, __pu_val, \
- __pu_err); \
- break; \
- case 2: \
- __put_user_asm("h", __pu_addr, __pu_val, \
- __pu_err); \
- break; \
- case 4: \
- __put_user_asm("w", __pu_addr, __pu_val, \
- __pu_err); \
- break; \
- case 8: \
- __put_user_asm("d", __pu_addr, __pu_val, \
- __pu_err); \
- break; \
- default: \
- __pu_err = __put_user_bad(); \
- break; \
- } \
- } else { \
- __pu_err = -EFAULT; \
- } \
- __pu_err; \
-})
-
-#define __put_user_asm(suffix, ptr, __pu_val, __gu_err) \
- asm volatile( \
- "1: st." suffix " %1, %3 \n" \
- "2: \n" \
- " .section .fixup, \"ax\" \n" \
- "3: mov %0, %4 \n" \
- " rjmp 2b \n" \
- " .previous \n" \
- " .section __ex_table, \"a\" \n" \
- " .long 1b, 3b \n" \
- " .previous \n" \
- : "=r"(__gu_err), "=m"(*(ptr)) \
- : "0"(__gu_err), "r"(__pu_val), "i"(-EFAULT))
-
-extern __kernel_size_t clear_user(void __user *addr, __kernel_size_t size);
-extern __kernel_size_t __clear_user(void __user *addr, __kernel_size_t size);
-
-extern long strncpy_from_user(char *dst, const char __user *src, long count);
-extern long __strncpy_from_user(char *dst, const char __user *src, long count);
-
-extern long strnlen_user(const char __user *__s, long __n);
-extern long __strnlen_user(const char __user *__s, long __n);
-
-#define strlen_user(s) strnlen_user(s, ~0UL >> 1)
-
-struct exception_table_entry
-{
- unsigned long insn, fixup;
-};
-
-#endif /* __ASM_AVR32_UACCESS_H */
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