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-rw-r--r--arch/mn10300/include/asm/uaccess.h297
1 files changed, 0 insertions, 297 deletions
diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h
deleted file mode 100644
index 5af468fd1359..000000000000
--- a/arch/mn10300/include/asm/uaccess.h
+++ /dev/null
@@ -1,297 +0,0 @@
-/* MN10300 userspace access functions
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#ifndef _ASM_UACCESS_H
-#define _ASM_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/kernel.h>
-#include <asm/page.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.
- */
-#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
-
-#define KERNEL_XDS MAKE_MM_SEG(0xBFFFFFFF)
-#define KERNEL_DS MAKE_MM_SEG(0x9FFFFFFF)
-#define USER_DS MAKE_MM_SEG(TASK_SIZE)
-
-#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)
-
-#define __addr_ok(addr) \
- ((unsigned long)(addr) < (current_thread_info()->addr_limit.seg))
-
-/*
- * check that a range of addresses falls within the current address limit
- */
-static inline int ___range_ok(unsigned long addr, unsigned int size)
-{
- int flag = 1, tmp;
-
- asm(" add %3,%1 \n" /* set C-flag if addr + size > 4Gb */
- " bcs 0f \n"
- " cmp %4,%1 \n" /* jump if addr+size>limit (error) */
- " bhi 0f \n"
- " clr %0 \n" /* mark okay */
- "0: \n"
- : "=r"(flag), "=&r"(tmp)
- : "1"(addr), "ir"(size),
- "r"(current_thread_info()->addr_limit.seg), "0"(flag)
- : "cc"
- );
-
- return flag;
-}
-
-#define __range_ok(addr, size) ___range_ok((unsigned long)(addr), (u32)(size))
-
-#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
-#define __access_ok(addr, size) (__range_ok((addr), (size)) == 0)
-
-#include <asm/extable.h>
-
-#define put_user(x, ptr) __put_user_check((x), (ptr), sizeof(*(ptr)))
-#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
-
-/*
- * The "__xxx" versions do not do address space checking, useful when
- * doing multiple accesses to the same area (the user has to do the
- * checks by hand with "access_ok()")
- */
-#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
-#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 *)(x))
-
-#define __get_user_nocheck(x, ptr, size) \
-({ \
- unsigned long __gu_addr; \
- int __gu_err; \
- __gu_addr = (unsigned long) (ptr); \
- switch (size) { \
- case 1: { \
- unsigned char __gu_val; \
- __get_user_asm("bu"); \
- (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \
- break; \
- } \
- case 2: { \
- unsigned short __gu_val; \
- __get_user_asm("hu"); \
- (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \
- break; \
- } \
- case 4: { \
- unsigned int __gu_val; \
- __get_user_asm(""); \
- (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \
- break; \
- } \
- default: \
- __get_user_unknown(); \
- break; \
- } \
- __gu_err; \
-})
-
-#define __get_user_check(x, ptr, size) \
-({ \
- const __typeof__(*(ptr))* __guc_ptr = (ptr); \
- int _e; \
- if (likely(__access_ok((unsigned long) __guc_ptr, (size)))) \
- _e = __get_user_nocheck((x), __guc_ptr, (size)); \
- else { \
- _e = -EFAULT; \
- (x) = (__typeof__(x))0; \
- } \
- _e; \
-})
-
-#define __get_user_asm(INSN) \
-({ \
- asm volatile( \
- "1:\n" \
- " mov"INSN" %2,%1\n" \
- " mov 0,%0\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- "3:\n\t" \
- " mov 0,%1\n" \
- " mov %3,%0\n" \
- " jmp 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .balign 4\n" \
- " .long 1b, 3b\n" \
- " .previous" \
- : "=&r" (__gu_err), "=&r" (__gu_val) \
- : "m" (__m(__gu_addr)), "i" (-EFAULT)); \
-})
-
-extern int __get_user_unknown(void);
-
-#define __put_user_nocheck(x, ptr, size) \
-({ \
- union { \
- __typeof__(*(ptr)) val; \
- u32 bits[2]; \
- } __pu_val; \
- unsigned long __pu_addr; \
- int __pu_err; \
- __pu_val.val = (x); \
- __pu_addr = (unsigned long) (ptr); \
- switch (size) { \
- case 1: __put_user_asm("bu"); break; \
- case 2: __put_user_asm("hu"); break; \
- case 4: __put_user_asm("" ); break; \
- case 8: __put_user_asm8(); break; \
- default: __pu_err = __put_user_unknown(); break; \
- } \
- __pu_err; \
-})
-
-#define __put_user_check(x, ptr, size) \
-({ \
- union { \
- __typeof__(*(ptr)) val; \
- u32 bits[2]; \
- } __pu_val; \
- unsigned long __pu_addr; \
- int __pu_err; \
- __pu_val.val = (x); \
- __pu_addr = (unsigned long) (ptr); \
- if (likely(__access_ok(__pu_addr, size))) { \
- switch (size) { \
- case 1: __put_user_asm("bu"); break; \
- case 2: __put_user_asm("hu"); break; \
- case 4: __put_user_asm("" ); break; \
- case 8: __put_user_asm8(); break; \
- default: __pu_err = __put_user_unknown(); break; \
- } \
- } \
- else { \
- __pu_err = -EFAULT; \
- } \
- __pu_err; \
-})
-
-#define __put_user_asm(INSN) \
-({ \
- asm volatile( \
- "1:\n" \
- " mov"INSN" %1,%2\n" \
- " mov 0,%0\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- "3:\n" \
- " mov %3,%0\n" \
- " jmp 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .balign 4\n" \
- " .long 1b, 3b\n" \
- " .previous" \
- : "=&r" (__pu_err) \
- : "r" (__pu_val.val), "m" (__m(__pu_addr)), \
- "i" (-EFAULT) \
- ); \
-})
-
-#define __put_user_asm8() \
-({ \
- asm volatile( \
- "1: mov %1,%3 \n" \
- "2: mov %2,%4 \n" \
- " mov 0,%0 \n" \
- "3: \n" \
- " .section .fixup,\"ax\" \n" \
- "4: \n" \
- " mov %5,%0 \n" \
- " jmp 3b \n" \
- " .previous \n" \
- " .section __ex_table,\"a\"\n" \
- " .balign 4 \n" \
- " .long 1b, 4b \n" \
- " .long 2b, 4b \n" \
- " .previous \n" \
- : "=&r" (__pu_err) \
- : "r" (__pu_val.bits[0]), "r" (__pu_val.bits[1]), \
- "m" (__m(__pu_addr)), "m" (__m(__pu_addr+4)), \
- "i" (-EFAULT) \
- ); \
-})
-
-extern int __put_user_unknown(void);
-
-
-/*
- * Copy To/From Userspace
- */
-/* Generic arbitrary sized copy. */
-#define __copy_user(to, from, size) \
-do { \
- if (size) { \
- void *__to = to; \
- const void *__from = from; \
- int w; \
- asm volatile( \
- "0: movbu (%0),%3;\n" \
- "1: movbu %3,(%1);\n" \
- " inc %0;\n" \
- " inc %1;\n" \
- " add -1,%2;\n" \
- " bne 0b;\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- "3: jmp 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .balign 4\n" \
- " .long 0b,3b\n" \
- " .long 1b,3b\n" \
- " .previous\n" \
- : "=a"(__from), "=a"(__to), "=r"(size), "=&r"(w)\
- : "0"(__from), "1"(__to), "2"(size) \
- : "cc", "memory"); \
- } \
-} while (0)
-
-static inline unsigned long
-raw_copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- __copy_user(to, from, n);
- return n;
-}
-
-static inline unsigned long
-raw_copy_to_user(void __user *to, const void *from, unsigned long n)
-{
- __copy_user(to, from, n);
- return n;
-}
-
-extern long strncpy_from_user(char *dst, const char __user *src, long count);
-extern long strnlen_user(const char __user *str, long n);
-extern unsigned long clear_user(void __user *mem, unsigned long len);
-extern unsigned long __clear_user(void __user *mem, unsigned long len);
-
-#endif /* _ASM_UACCESS_H */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.