diff options
Diffstat (limited to 'arch/openrisc/include/asm/uaccess.h')
-rw-r--r-- | arch/openrisc/include/asm/uaccess.h | 48 |
1 files changed, 8 insertions, 40 deletions
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index 227af1acb8bd..a557a7cd0232 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -25,6 +25,7 @@ #include <linux/prefetch.h> #include <linux/string.h> #include <asm/page.h> +#include <asm/extable.h> /* * The fs value determines whether argument validity checking should be @@ -61,23 +62,6 @@ __range_ok((unsigned long)addr, (unsigned long)size) /* - * 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; -}; - -/* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. * @@ -206,7 +190,7 @@ do { \ case 1: __get_user_asm(x, ptr, retval, "l.lbz"); break; \ case 2: __get_user_asm(x, ptr, retval, "l.lhz"); break; \ case 4: __get_user_asm(x, ptr, retval, "l.lwz"); break; \ - case 8: __get_user_asm2(x, ptr, retval); \ + case 8: __get_user_asm2(x, ptr, retval); break; \ default: (x) = __get_user_bad(); \ } \ } while (0) @@ -252,34 +236,18 @@ do { \ extern unsigned long __must_check __copy_tofrom_user(void *to, const void *from, unsigned long size); - -#define __copy_from_user(to, from, size) \ - __copy_tofrom_user(to, from, size) -#define __copy_to_user(to, from, size) \ - __copy_tofrom_user(to, from, size) - -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user - static inline unsigned long -copy_from_user(void *to, const void *from, unsigned long n) +raw_copy_from_user(void *to, const void __user *from, unsigned long size) { - unsigned long res = n; - - if (likely(access_ok(VERIFY_READ, from, n))) - res = __copy_tofrom_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; + return __copy_tofrom_user(to, (__force const void *)from, size); } - static inline unsigned long -copy_to_user(void *to, const void *from, unsigned long n) +raw_copy_to_user(void *to, const void __user *from, unsigned long size) { - if (likely(access_ok(VERIFY_WRITE, to, n))) - n = __copy_tofrom_user(to, from, n); - return n; + return __copy_tofrom_user((__force void *)to, from, size); } +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER extern unsigned long __clear_user(void *addr, unsigned long size); |