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Diffstat (limited to 'include/asm-m68k/uaccess.h')
-rw-r--r--include/asm-m68k/uaccess.h374
1 files changed, 0 insertions, 374 deletions
diff --git a/include/asm-m68k/uaccess.h b/include/asm-m68k/uaccess.h
deleted file mode 100644
index 7107f3fbdbb..00000000000
--- a/include/asm-m68k/uaccess.h
+++ /dev/null
@@ -1,374 +0,0 @@
-#ifndef __M68K_UACCESS_H
-#define __M68K_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/compiler.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <asm/segment.h>
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
-
-/* We let the MMU do all checking */
-static inline int access_ok(int type, const void __user *addr,
- unsigned long size)
-{
- return 1;
-}
-
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path. This means when everything is well,
- * we don't even have to jump over them. Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry
-{
- unsigned long insn, fixup;
-};
-
-extern int __put_user_bad(void);
-extern int __get_user_bad(void);
-
-#define __put_user_asm(res, x, ptr, bwl, reg, err) \
-asm volatile ("\n" \
- "1: moves."#bwl" %2,%1\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: moveq.l %3,%0\n" \
- " jra 2b\n" \
- " .previous\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10b\n" \
- " .long 2b,10b\n" \
- " .previous" \
- : "+d" (res), "=m" (*(ptr)) \
- : #reg (x), "i" (err))
-
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- */
-
-#define __put_user(x, ptr) \
-({ \
- typeof(*(ptr)) __pu_val = (x); \
- int __pu_err = 0; \
- __chk_user_ptr(ptr); \
- switch (sizeof (*(ptr))) { \
- case 1: \
- __put_user_asm(__pu_err, __pu_val, ptr, b, d, -EFAULT); \
- break; \
- case 2: \
- __put_user_asm(__pu_err, __pu_val, ptr, w, d, -EFAULT); \
- break; \
- case 4: \
- __put_user_asm(__pu_err, __pu_val, ptr, l, r, -EFAULT); \
- break; \
- case 8: \
- { \
- const void __user *__pu_ptr = (ptr); \
- asm volatile ("\n" \
- "1: moves.l %2,(%1)+\n" \
- "2: moves.l %R2,(%1)\n" \
- "3:\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: movel %3,%0\n" \
- " jra 3b\n" \
- " .previous\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10b\n" \
- " .long 2b,10b\n" \
- " .long 3b,10b\n" \
- " .previous" \
- : "+d" (__pu_err), "+a" (__pu_ptr) \
- : "r" (__pu_val), "i" (-EFAULT) \
- : "memory"); \
- break; \
- } \
- default: \
- __pu_err = __put_user_bad(); \
- break; \
- } \
- __pu_err; \
-})
-#define put_user(x, ptr) __put_user(x, ptr)
-
-
-#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \
- type __gu_val; \
- asm volatile ("\n" \
- "1: moves."#bwl" %2,%1\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: move.l %3,%0\n" \
- " sub."#bwl" %1,%1\n" \
- " jra 2b\n" \
- " .previous\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10b\n" \
- " .previous" \
- : "+d" (res), "=&" #reg (__gu_val) \
- : "m" (*(ptr)), "i" (err)); \
- (x) = (typeof(*(ptr)))(unsigned long)__gu_val; \
-})
-
-#define __get_user(x, ptr) \
-({ \
- int __gu_err = 0; \
- __chk_user_ptr(ptr); \
- switch (sizeof(*(ptr))) { \
- case 1: \
- __get_user_asm(__gu_err, x, ptr, u8, b, d, -EFAULT); \
- break; \
- case 2: \
- __get_user_asm(__gu_err, x, ptr, u16, w, d, -EFAULT); \
- break; \
- case 4: \
- __get_user_asm(__gu_err, x, ptr, u32, l, r, -EFAULT); \
- break; \
-/* case 8: disabled because gcc-4.1 has a broken typeof \
- { \
- const void *__gu_ptr = (ptr); \
- u64 __gu_val; \
- asm volatile ("\n" \
- "1: moves.l (%2)+,%1\n" \
- "2: moves.l (%2),%R1\n" \
- "3:\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: move.l %3,%0\n" \
- " sub.l %1,%1\n" \
- " sub.l %R1,%R1\n" \
- " jra 3b\n" \
- " .previous\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10b\n" \
- " .long 2b,10b\n" \
- " .previous" \
- : "+d" (__gu_err), "=&r" (__gu_val), \
- "+a" (__gu_ptr) \
- : "i" (-EFAULT) \
- : "memory"); \
- (x) = (typeof(*(ptr)))__gu_val; \
- break; \
- } */ \
- default: \
- __gu_err = __get_user_bad(); \
- break; \
- } \
- __gu_err; \
-})
-#define get_user(x, ptr) __get_user(x, ptr)
-
-unsigned long __generic_copy_from_user(void *to, const void __user *from, unsigned long n);
-unsigned long __generic_copy_to_user(void __user *to, const void *from, unsigned long n);
-
-#define __constant_copy_from_user_asm(res, to, from, tmp, n, s1, s2, s3)\
- asm volatile ("\n" \
- "1: moves."#s1" (%2)+,%3\n" \
- " move."#s1" %3,(%1)+\n" \
- "2: moves."#s2" (%2)+,%3\n" \
- " move."#s2" %3,(%1)+\n" \
- " .ifnc \""#s3"\",\"\"\n" \
- "3: moves."#s3" (%2)+,%3\n" \
- " move."#s3" %3,(%1)+\n" \
- " .endif\n" \
- "4:\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10f\n" \
- " .long 2b,20f\n" \
- " .ifnc \""#s3"\",\"\"\n" \
- " .long 3b,30f\n" \
- " .endif\n" \
- " .previous\n" \
- "\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: clr."#s1" (%1)+\n" \
- "20: clr."#s2" (%1)+\n" \
- " .ifnc \""#s3"\",\"\"\n" \
- "30: clr."#s3" (%1)+\n" \
- " .endif\n" \
- " moveq.l #"#n",%0\n" \
- " jra 4b\n" \
- " .previous\n" \
- : "+d" (res), "+&a" (to), "+a" (from), "=&d" (tmp) \
- : : "memory")
-
-static __always_inline unsigned long
-__constant_copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- unsigned long res = 0, tmp;
-
- switch (n) {
- case 1:
- __get_user_asm(res, *(u8 *)to, (u8 __user *)from, u8, b, d, 1);
- break;
- case 2:
- __get_user_asm(res, *(u16 *)to, (u16 __user *)from, u16, w, d, 2);
- break;
- case 3:
- __constant_copy_from_user_asm(res, to, from, tmp, 3, w, b,);
- break;
- case 4:
- __get_user_asm(res, *(u32 *)to, (u32 __user *)from, u32, l, r, 4);
- break;
- case 5:
- __constant_copy_from_user_asm(res, to, from, tmp, 5, l, b,);
- break;
- case 6:
- __constant_copy_from_user_asm(res, to, from, tmp, 6, l, w,);
- break;
- case 7:
- __constant_copy_from_user_asm(res, to, from, tmp, 7, l, w, b);
- break;
- case 8:
- __constant_copy_from_user_asm(res, to, from, tmp, 8, l, l,);
- break;
- case 9:
- __constant_copy_from_user_asm(res, to, from, tmp, 9, l, l, b);
- break;
- case 10:
- __constant_copy_from_user_asm(res, to, from, tmp, 10, l, l, w);
- break;
- case 12:
- __constant_copy_from_user_asm(res, to, from, tmp, 12, l, l, l);
- break;
- default:
- /* we limit the inlined version to 3 moves */
- return __generic_copy_from_user(to, from, n);
- }
-
- return res;
-}
-
-#define __constant_copy_to_user_asm(res, to, from, tmp, n, s1, s2, s3) \
- asm volatile ("\n" \
- " move."#s1" (%2)+,%3\n" \
- "11: moves."#s1" %3,(%1)+\n" \
- "12: move."#s2" (%2)+,%3\n" \
- "21: moves."#s2" %3,(%1)+\n" \
- "22:\n" \
- " .ifnc \""#s3"\",\"\"\n" \
- " move."#s3" (%2)+,%3\n" \
- "31: moves."#s3" %3,(%1)+\n" \
- "32:\n" \
- " .endif\n" \
- "4:\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 11b,5f\n" \
- " .long 12b,5f\n" \
- " .long 21b,5f\n" \
- " .long 22b,5f\n" \
- " .ifnc \""#s3"\",\"\"\n" \
- " .long 31b,5f\n" \
- " .long 32b,5f\n" \
- " .endif\n" \
- " .previous\n" \
- "\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "5: moveq.l #"#n",%0\n" \
- " jra 4b\n" \
- " .previous\n" \
- : "+d" (res), "+a" (to), "+a" (from), "=&d" (tmp) \
- : : "memory")
-
-static __always_inline unsigned long
-__constant_copy_to_user(void __user *to, const void *from, unsigned long n)
-{
- unsigned long res = 0, tmp;
-
- switch (n) {
- case 1:
- __put_user_asm(res, *(u8 *)from, (u8 __user *)to, b, d, 1);
- break;
- case 2:
- __put_user_asm(res, *(u16 *)from, (u16 __user *)to, w, d, 2);
- break;
- case 3:
- __constant_copy_to_user_asm(res, to, from, tmp, 3, w, b,);
- break;
- case 4:
- __put_user_asm(res, *(u32 *)from, (u32 __user *)to, l, r, 4);
- break;
- case 5:
- __constant_copy_to_user_asm(res, to, from, tmp, 5, l, b,);
- break;
- case 6:
- __constant_copy_to_user_asm(res, to, from, tmp, 6, l, w,);
- break;
- case 7:
- __constant_copy_to_user_asm(res, to, from, tmp, 7, l, w, b);
- break;
- case 8:
- __constant_copy_to_user_asm(res, to, from, tmp, 8, l, l,);
- break;
- case 9:
- __constant_copy_to_user_asm(res, to, from, tmp, 9, l, l, b);
- break;
- case 10:
- __constant_copy_to_user_asm(res, to, from, tmp, 10, l, l, w);
- break;
- case 12:
- __constant_copy_to_user_asm(res, to, from, tmp, 12, l, l, l);
- break;
- default:
- /* limit the inlined version to 3 moves */
- return __generic_copy_to_user(to, from, n);
- }
-
- return res;
-}
-
-#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_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-#define copy_from_user(to, from, n) __copy_from_user(to, from, n)
-#define copy_to_user(to, from, n) __copy_to_user(to, from, n)
-
-long strncpy_from_user(char *dst, const char __user *src, long count);
-long strnlen_user(const char __user *src, long n);
-unsigned long __clear_user(void __user *to, unsigned long n);
-
-#define clear_user __clear_user
-
-#define strlen_user(str) strnlen_user(str, 32767)
-
-#endif /* _M68K_UACCESS_H */
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