diff options
Diffstat (limited to 'arch/nios2')
| -rw-r--r-- | arch/nios2/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/nios2/include/asm/uaccess.h | 55 | ||||
| -rw-r--r-- | arch/nios2/mm/uaccess.c | 16 |
3 files changed, 16 insertions, 56 deletions
diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild index aaa3c218b56c..87e70f2b463f 100644 --- a/arch/nios2/include/asm/Kbuild +++ b/arch/nios2/include/asm/Kbuild @@ -13,6 +13,7 @@ generic-y += dma.h generic-y += emergency-restart.h generic-y += errno.h generic-y += exec.h +generic-y += extable.h generic-y += fb.h generic-y += fcntl.h generic-y += ftrace.h diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h index 0ab82324c817..727bd9504899 100644 --- a/arch/nios2/include/asm/uaccess.h +++ b/arch/nios2/include/asm/uaccess.h @@ -13,33 +13,11 @@ #ifndef _ASM_NIOS2_UACCESS_H #define _ASM_NIOS2_UACCESS_H -#include <linux/errno.h> -#include <linux/thread_info.h> #include <linux/string.h> #include <asm/page.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; - unsigned long fixup; -}; - -extern int fixup_exception(struct pt_regs *regs); +#include <asm/extable.h> /* * Segment stuff @@ -95,36 +73,17 @@ static inline unsigned long __must_check clear_user(void __user *to, return __clear_user(to, n); } -extern long __copy_from_user(void *to, const void __user *from, - unsigned long n); -extern long __copy_to_user(void __user *to, const void *from, unsigned long n); - -static inline long copy_from_user(void *to, const void __user *from, - unsigned long n) -{ - unsigned long res = n; - if (access_ok(VERIFY_READ, from, n)) - res = __copy_from_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; -} - -static inline long copy_to_user(void __user *to, const void *from, - unsigned long n) -{ - if (!access_ok(VERIFY_WRITE, to, n)) - return n; - return __copy_to_user(to, from, n); -} +extern unsigned long +raw_copy_from_user(void *to, const void __user *from, unsigned long n); +extern unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n); +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER extern long strncpy_from_user(char *__to, const char __user *__from, long __len); extern long strnlen_user(const char __user *s, long n); -#define __copy_from_user_inatomic __copy_from_user -#define __copy_to_user_inatomic __copy_to_user - /* Optimized macros */ #define __get_user_asm(val, insn, addr, err) \ { \ diff --git a/arch/nios2/mm/uaccess.c b/arch/nios2/mm/uaccess.c index 7663e156ff4f..804983317766 100644 --- a/arch/nios2/mm/uaccess.c +++ b/arch/nios2/mm/uaccess.c @@ -10,9 +10,9 @@ #include <linux/export.h> #include <linux/uaccess.h> -asm(".global __copy_from_user\n" - " .type __copy_from_user, @function\n" - "__copy_from_user:\n" +asm(".global raw_copy_from_user\n" + " .type raw_copy_from_user, @function\n" + "raw_copy_from_user:\n" " movi r2,7\n" " mov r3,r4\n" " bge r2,r6,1f\n" @@ -65,12 +65,12 @@ asm(".global __copy_from_user\n" ".word 7b,13b\n" ".previous\n" ); -EXPORT_SYMBOL(__copy_from_user); +EXPORT_SYMBOL(raw_copy_from_user); asm( - " .global __copy_to_user\n" - " .type __copy_to_user, @function\n" - "__copy_to_user:\n" + " .global raw_copy_to_user\n" + " .type raw_copy_to_user, @function\n" + "raw_copy_to_user:\n" " movi r2,7\n" " mov r3,r4\n" " bge r2,r6,1f\n" @@ -127,7 +127,7 @@ asm( ".word 11b,13b\n" ".word 12b,13b\n" ".previous\n"); -EXPORT_SYMBOL(__copy_to_user); +EXPORT_SYMBOL(raw_copy_to_user); long strncpy_from_user(char *__to, const char __user *__from, long __len) { |
