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-rw-r--r--include/asm-blackfin/uaccess.h271
1 files changed, 0 insertions, 271 deletions
diff --git a/include/asm-blackfin/uaccess.h b/include/asm-blackfin/uaccess.h
deleted file mode 100644
index d928b80..0000000
--- a/include/asm-blackfin/uaccess.h
+++ /dev/null
@@ -1,271 +0,0 @@
-/* Changes made by Lineo Inc. May 2001
- *
- * Based on: include/asm-m68knommu/uaccess.h
- */
-
-#ifndef __BLACKFIN_UACCESS_H
-#define __BLACKFIN_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-
-#include <asm/segment.h>
-#ifdef CONFIG_ACCESS_CHECK
-# include <asm/bfin-global.h>
-#endif
-
-#define get_ds() (KERNEL_DS)
-#define get_fs() (current_thread_info()->addr_limit)
-
-static inline void set_fs(mm_segment_t fs)
-{
- current_thread_info()->addr_limit = fs;
-}
-
-#define segment_eq(a,b) ((a) == (b))
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
-
-#define access_ok(type, addr, size) _access_ok((unsigned long)(addr), (size))
-
-static inline int is_in_rom(unsigned long addr)
-{
- /*
- * What we are really trying to do is determine if addr is
- * in an allocated kernel memory region. If not then assume
- * we cannot free it or otherwise de-allocate it. Ideally
- * we could restrict this to really being in a ROM or flash,
- * but that would need to be done on a board by board basis,
- * not globally.
- */
- if ((addr < _ramstart) || (addr >= _ramend))
- return (1);
-
- /* Default case, not in ROM */
- return (0);
-}
-
-/*
- * 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.
- */
-
-#ifndef CONFIG_ACCESS_CHECK
-static inline int _access_ok(unsigned long addr, unsigned long size) { return 1; }
-#else
-#ifdef CONFIG_ACCESS_OK_L1
-extern int _access_ok(unsigned long addr, unsigned long size)__attribute__((l1_text));
-#else
-extern int _access_ok(unsigned long addr, unsigned long size);
-#endif
-#endif
-
-/*
- * 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);
-
-/*
- * 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,p) \
- ({ \
- int _err = 0; \
- typeof(*(p)) _x = (x); \
- typeof(*(p)) *_p = (p); \
- if (!access_ok(VERIFY_WRITE, _p, sizeof(*(_p)))) {\
- _err = -EFAULT; \
- } \
- else { \
- switch (sizeof (*(_p))) { \
- case 1: \
- __put_user_asm(_x, _p, B); \
- break; \
- case 2: \
- __put_user_asm(_x, _p, W); \
- break; \
- case 4: \
- __put_user_asm(_x, _p, ); \
- break; \
- case 8: { \
- long _xl, _xh; \
- _xl = ((long *)&_x)[0]; \
- _xh = ((long *)&_x)[1]; \
- __put_user_asm(_xl, ((long *)_p)+0, ); \
- __put_user_asm(_xh, ((long *)_p)+1, ); \
- } break; \
- default: \
- _err = __put_user_bad(); \
- break; \
- } \
- } \
- _err; \
- })
-
-#define __put_user(x,p) put_user(x,p)
-static inline int bad_user_access_length(void)
-{
- panic("bad_user_access_length");
- return -1;
-}
-
-#define __put_user_bad() (printk(KERN_INFO "put_user_bad %s:%d %s\n",\
- __FILE__, __LINE__, __func__),\
- bad_user_access_length(), (-EFAULT))
-
-/*
- * Tell gcc we read from memory instead of writing: this is because
- * we do not write to any memory gcc knows about, so there are no
- * aliasing issues.
- */
-
-#define __ptr(x) ((unsigned long *)(x))
-
-#define __put_user_asm(x,p,bhw) \
- __asm__ (#bhw"[%1] = %0;\n\t" \
- : /* no outputs */ \
- :"d" (x),"a" (__ptr(p)) : "memory")
-
-#define get_user(x,p) \
- ({ \
- int _err = 0; \
- typeof(*(p)) *_p = (p); \
- if (!access_ok(VERIFY_READ, _p, sizeof(*(_p)))) { \
- _err = -EFAULT; \
- } \
- else { \
- switch (sizeof(*(_p))) { \
- case 1: \
- __get_user_asm(x, _p, B,(Z)); \
- break; \
- case 2: \
- __get_user_asm(x, _p, W,(Z)); \
- break; \
- case 4: \
- __get_user_asm(x, _p, , ); \
- break; \
- case 8: { \
- unsigned long _xl, _xh; \
- __get_user_asm(_xl, ((unsigned long *)_p)+0, , ); \
- __get_user_asm(_xh, ((unsigned long *)_p)+1, , ); \
- ((unsigned long *)&x)[0] = _xl; \
- ((unsigned long *)&x)[1] = _xh; \
- } break; \
- default: \
- x = 0; \
- printk(KERN_INFO "get_user_bad: %s:%d %s\n", \
- __FILE__, __LINE__, __func__); \
- _err = __get_user_bad(); \
- break; \
- } \
- } \
- _err; \
- })
-
-#define __get_user(x,p) get_user(x,p)
-
-#define __get_user_bad() (bad_user_access_length(), (-EFAULT))
-
-#define __get_user_asm(x,p,bhw,option) \
- { \
- unsigned long _tmp; \
- __asm__ ("%0 =" #bhw "[%1]"#option";\n\t" \
- : "=d" (_tmp) \
- : "a" (__ptr(p))); \
- (x) = (__typeof__(*(p))) _tmp; \
- }
-
-#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)
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-#define copy_to_user_ret(to,from,n,retval) ({ if (copy_to_user(to,from,n))\
- return retval; })
-
-#define copy_from_user_ret(to,from,n,retval) ({ if (copy_from_user(to,from,n))\
- return retval; })
-
-static inline long copy_from_user(void *to,
- const void __user * from, unsigned long n)
-{
- if (access_ok(VERIFY_READ, from, n))
- memcpy(to, from, n);
- else
- return n;
- return 0;
-}
-
-static inline long copy_to_user(void *to,
- const void __user * from, unsigned long n)
-{
- if (access_ok(VERIFY_WRITE, to, n))
- memcpy(to, from, n);
- else
- return n;
- return 0;
-}
-
-/*
- * Copy a null terminated string from userspace.
- */
-
-static inline long strncpy_from_user(char *dst,
- const char *src, long count)
-{
- char *tmp;
- if (!access_ok(VERIFY_READ, src, 1))
- return -EFAULT;
- strncpy(dst, src, count);
- for (tmp = dst; *tmp && count > 0; tmp++, count--) ;
- return (tmp - dst);
-}
-
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 on exception, a value greater than N if too long
- */
-static inline long strnlen_user(const char *src, long n)
-{
- return (strlen(src) + 1);
-}
-
-#define strlen_user(str) strnlen_user(str, 32767)
-
-/*
- * Zero Userspace
- */
-
-static inline unsigned long __clear_user(void *to, unsigned long n)
-{
- memset(to, 0, n);
- return 0;
-}
-
-#define clear_user(to, n) __clear_user(to, n)
-
-#endif /* _BLACKFIN_UACCESS_H */
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