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-rw-r--r--include/asm-arm26/uaccess.h293
1 files changed, 0 insertions, 293 deletions
diff --git a/include/asm-arm26/uaccess.h b/include/asm-arm26/uaccess.h
deleted file mode 100644
index d64ed84cb2d3..000000000000
--- a/include/asm-arm26/uaccess.h
+++ /dev/null
@@ -1,293 +0,0 @@
-#ifndef _ASMARM_UACCESS_H
-#define _ASMARM_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/sched.h>
-#include <asm/errno.h>
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 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;
-};
-
-/* Returns 0 if exception not found and fixup otherwise. */
-extern unsigned long search_exception_table(unsigned long);
-extern int fixup_exception(struct pt_regs *regs);
-
-#define get_ds() (KERNEL_DS)
-#define get_fs() (current_thread_info()->addr_limit)
-#define segment_eq(a,b) ((a) == (b))
-
-#include <asm/uaccess-asm.h>
-
-#define access_ok(type,addr,size) (__range_ok(addr,size) == 0)
-
-/*
- * Single-value transfer routines. They automatically use the right
- * size if we just have the right pointer type. Note that the functions
- * which read from user space (*get_*) need to take care not to leak
- * kernel data even if the calling code is buggy and fails to check
- * the return value. This means zeroing out the destination variable
- * or buffer on error. Normally this is done out of line by the
- * fixup code, but there are a few places where it intrudes on the
- * main code path. When we only write to user space, there is no
- * problem.
- *
- * The "__xxx" versions of the user access functions do not verify the
- * address space - it must have been done previously with a separate
- * "access_ok()" call.
- *
- * The "xxx_error" versions set the third argument to EFAULT if an
- * error occurs, and leave it unchanged on success. Note that these
- * versions are void (ie, don't return a value as such).
- */
-
-extern int __get_user_1(void *);
-extern int __get_user_2(void *);
-extern int __get_user_4(void *);
-extern int __get_user_8(void *);
-extern int __get_user_bad(void);
-
-#define __get_user_x(__r1,__p,__e,__s,__i...) \
- __asm__ __volatile__ ("bl __get_user_" #__s \
- : "=&r" (__e), "=r" (__r1) \
- : "0" (__p) \
- : __i)
-
-#define get_user(x,p) \
- ({ \
- register const typeof(*(p)) *__p asm("r0") = (p); \
- register typeof(*(p)) __r1 asm("r1"); \
- register int __e asm("r0"); \
- switch (sizeof(*(p))) { \
- case 1: \
- __get_user_x(__r1, __p, __e, 1, "lr"); \
- break; \
- case 2: \
- __get_user_x(__r1, __p, __e, 2, "r2", "lr"); \
- break; \
- case 4: \
- __get_user_x(__r1, __p, __e, 4, "lr"); \
- break; \
- case 8: \
- __get_user_x(__r1, __p, __e, 8, "lr"); \
- break; \
- default: __e = __get_user_bad(); break; \
- } \
- x = __r1; \
- __e; \
- })
-
-
-#define __get_user(x,ptr) \
-({ \
- long __gu_err = 0; \
- __get_user_err((x),(ptr),__gu_err); \
- __gu_err; \
-})
-
-#define __get_user_error(x,ptr,err) \
-({ \
- __get_user_err((x),(ptr),err); \
- (void) 0; \
-})
-
-#define __get_user_err(x,ptr,err) \
-do { \
- unsigned long __gu_addr = (unsigned long)(ptr); \
- unsigned long __gu_val; \
- switch (sizeof(*(ptr))) { \
- case 1: __get_user_asm_byte(__gu_val,__gu_addr,err); break; \
- case 2: __get_user_asm_half(__gu_val,__gu_addr,err); break; \
- case 4: __get_user_asm_word(__gu_val,__gu_addr,err); break; \
- default: (__gu_val) = __get_user_bad(); \
- } \
- (x) = (__typeof__(*(ptr)))__gu_val; \
-} while (0)
-
-extern int __put_user_1(void *, unsigned int);
-extern int __put_user_2(void *, unsigned int);
-extern int __put_user_4(void *, unsigned int);
-extern int __put_user_8(void *, unsigned long long);
-extern int __put_user_bad(void);
-
-#define __put_user_x(__r1,__p,__e,__s) \
- __asm__ __volatile__ ( \
- __asmeq("%0", "r0") __asmeq("%2", "r1") \
- "bl __put_user_" #__s \
- : "=&r" (__e) \
- : "0" (__p), "r" (__r1) \
- : "ip", "lr", "cc")
-
-#define put_user(x,p) \
- ({ \
- register const typeof(*(p)) __r1 asm("r1") = (x); \
- register const typeof(*(p)) *__p asm("r0") = (p); \
- register int __e asm("r0"); \
- switch (sizeof(*(__p))) { \
- case 1: \
- __put_user_x(__r1, __p, __e, 1); \
- break; \
- case 2: \
- __put_user_x(__r1, __p, __e, 2); \
- break; \
- case 4: \
- __put_user_x(__r1, __p, __e, 4); \
- break; \
- case 8: \
- __put_user_x(__r1, __p, __e, 8); \
- break; \
- default: __e = __put_user_bad(); break; \
- } \
- __e; \
- })
-
-#if 0
-/********************* OLD METHOD *******************/
-#define __put_user_x(__r1,__p,__e,__s,__i...) \
- __asm__ __volatile__ ("bl __put_user_" #__s \
- : "=&r" (__e) \
- : "0" (__p), "r" (__r1) \
- : __i)
-
-#define put_user(x,p) \
- ({ \
- register const typeof(*(p)) __r1 asm("r1") = (x); \
- register const typeof(*(p)) *__p asm("r0") = (p); \
- register int __e asm("r0"); \
- switch (sizeof(*(p))) { \
- case 1: \
- __put_user_x(__r1, __p, __e, 1, "r2", "lr"); \
- break; \
- case 2: \
- __put_user_x(__r1, __p, __e, 2, "r2", "lr"); \
- break; \
- case 4: \
- __put_user_x(__r1, __p, __e, 4, "r2", "lr"); \
- break; \
- case 8: \
- __put_user_x(__r1, __p, __e, 8, "r2", "ip", "lr"); \
- break; \
- default: __e = __put_user_bad(); break; \
- } \
- __e; \
- })
-/*************************************************/
-#endif
-
-#define __put_user(x,ptr) \
-({ \
- long __pu_err = 0; \
- __put_user_err((x),(ptr),__pu_err); \
- __pu_err; \
-})
-
-#define __put_user_error(x,ptr,err) \
-({ \
- __put_user_err((x),(ptr),err); \
- (void) 0; \
-})
-
-#define __put_user_err(x,ptr,err) \
-do { \
- unsigned long __pu_addr = (unsigned long)(ptr); \
- __typeof__(*(ptr)) __pu_val = (x); \
- switch (sizeof(*(ptr))) { \
- case 1: __put_user_asm_byte(__pu_val,__pu_addr,err); break; \
- case 2: __put_user_asm_half(__pu_val,__pu_addr,err); break; \
- case 4: __put_user_asm_word(__pu_val,__pu_addr,err); break; \
- case 8: __put_user_asm_dword(__pu_val,__pu_addr,err); break; \
- default: __put_user_bad(); \
- } \
-} while (0)
-
-static __inline__ unsigned long copy_from_user(void *to, const void *from, unsigned long n)
-{
- if (access_ok(VERIFY_READ, from, n))
- __do_copy_from_user(to, from, n);
- else /* security hole - plug it */
- memzero(to, n);
- return n;
-}
-
-static __inline__ unsigned long __copy_from_user(void *to, const void *from, unsigned long n)
-{
- __do_copy_from_user(to, from, n);
- return n;
-}
-
-static __inline__ unsigned long copy_to_user(void *to, const void *from, unsigned long n)
-{
- if (access_ok(VERIFY_WRITE, to, n))
- __do_copy_to_user(to, from, n);
- return n;
-}
-
-static __inline__ unsigned long __copy_to_user(void *to, const void *from, unsigned long n)
-{
- __do_copy_to_user(to, from, n);
- return n;
-}
-
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-static __inline__ unsigned long clear_user (void *to, unsigned long n)
-{
- if (access_ok(VERIFY_WRITE, to, n))
- __do_clear_user(to, n);
- return n;
-}
-
-static __inline__ unsigned long __clear_user (void *to, unsigned long n)
-{
- __do_clear_user(to, n);
- return n;
-}
-
-static __inline__ long strncpy_from_user (char *dst, const char *src, long count)
-{
- long res = -EFAULT;
- if (access_ok(VERIFY_READ, src, 1))
- __do_strncpy_from_user(dst, src, count, res);
- return res;
-}
-
-static __inline__ long __strncpy_from_user (char *dst, const char *src, long count)
-{
- long res;
- __do_strncpy_from_user(dst, src, count, res);
- return res;
-}
-
-#define strlen_user(s) strnlen_user(s, ~0UL >> 1)
-
-static inline long strnlen_user(const char *s, long n)
-{
- unsigned long res = 0;
-
- if (__addr_ok(s))
- __do_strnlen_user(s, n, res);
-
- return res;
-}
-
-#endif /* _ASMARM_UACCESS_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 21:57:24 +0000