diff options
Diffstat (limited to 'include/asm-sh/uaccess_64.h')
| -rw-r--r-- | include/asm-sh/uaccess_64.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/include/asm-sh/uaccess_64.h b/include/asm-sh/uaccess_64.h index a9b68d094844..81b3d515fcb3 100644 --- a/include/asm-sh/uaccess_64.h +++ b/include/asm-sh/uaccess_64.h @@ -20,87 +20,6 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. */ -#include <linux/errno.h> -#include <linux/sched.h> - -#define VERIFY_READ 0 -#define VERIFY_WRITE 1 - -/* - * 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. - * - * For historical reasons (Data Segment Register?), these macros are misnamed. - */ - -#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) - -#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF) -#define USER_DS MAKE_MM_SEG(0x80000000) - -#define get_ds() (KERNEL_DS) -#define get_fs() (current_thread_info()->addr_limit) -#define set_fs(x) (current_thread_info()->addr_limit=(x)) - -#define segment_eq(a,b) ((a).seg == (b).seg) - -#define __addr_ok(addr) ((unsigned long)(addr) < (current_thread_info()->addr_limit.seg)) - -/* - * Uhhuh, this needs 33-bit arithmetic. We have a carry.. - * - * sum := addr + size; carry? --> flag = true; - * if (sum >= addr_limit) flag = true; - */ -#define __range_ok(addr,size) (((unsigned long) (addr) + (size) < (current_thread_info()->addr_limit.seg)) ? 0 : 1) - -#define access_ok(type,addr,size) (__range_ok(addr,size) == 0) -#define __access_ok(addr,size) (__range_ok(addr,size) == 0) - -/* - * Uh, these should become the main single-value transfer routines ... - * They automatically use the right size if we just have the right - * pointer type ... - * - * As MIPS uses the same address space for kernel and user data, we - * can just do these as direct assignments. - * - * Careful to not - * (a) re-use the arguments for side effects (sizeof is ok) - * (b) require any knowledge of processes at this stage - */ -#define put_user(x,ptr) __put_user_check((x),(ptr),sizeof(*(ptr))) -#define get_user(x,ptr) __get_user_check((x),(ptr),sizeof(*(ptr))) - -/* - * The "__xxx" versions do not do address space checking, useful when - * doing multiple accesses to the same area (the user has to do the - * checks by hand with "access_ok()") - */ -#define __put_user(x,ptr) __put_user_nocheck((x),(ptr),sizeof(*(ptr))) -#define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr))) - -/* - * The "xxx_ret" versions return constant specified in third argument, if - * something bad happens. These macros can be optimized for the - * case of just returning from the function xxx_ret is used. - */ - -#define put_user_ret(x,ptr,ret) ({ \ -if (put_user(x,ptr)) return ret; }) - -#define get_user_ret(x,ptr,ret) ({ \ -if (get_user(x,ptr)) return ret; }) - -#define __put_user_ret(x,ptr,ret) ({ \ -if (__put_user(x,ptr)) return ret; }) - -#define __get_user_ret(x,ptr,ret) ({ \ -if (__get_user(x,ptr)) return ret; }) - -struct __large_struct { unsigned long buf[100]; }; -#define __m(x) (*(struct __large_struct *)(x)) #define __get_user_size(x,ptr,size,retval) \ do { \ @@ -124,26 +43,6 @@ do { \ } \ } while (0) -#define __get_user_nocheck(x,ptr,size) \ -({ \ - long __gu_err, __gu_val; \ - __get_user_size((void *)&__gu_val, (long)(ptr), \ - (size), __gu_err); \ - (x) = (__typeof__(*(ptr)))__gu_val; \ - __gu_err; \ -}) - -#define __get_user_check(x,ptr,size) \ -({ \ - long __gu_addr = (long)(ptr); \ - long __gu_err = -EFAULT, __gu_val; \ - if (__access_ok(__gu_addr, (size))) \ - __get_user_size((void *)&__gu_val, __gu_addr, \ - (size), __gu_err); \ - (x) = (__typeof__(*(ptr))) __gu_val; \ - __gu_err; \ -}) - extern long __get_user_asm_b(void *, long); extern long __get_user_asm_w(void *, long); extern long __get_user_asm_l(void *, long); @@ -171,115 +70,10 @@ do { \ } \ } while (0) -#define __put_user_nocheck(x,ptr,size) \ -({ \ - long __pu_err; \ - __typeof__(*(ptr)) __pu_val = (x); \ - __put_user_size((void *)&__pu_val, (long)(ptr), (size), __pu_err); \ - __pu_err; \ -}) - -#define __put_user_check(x,ptr,size) \ -({ \ - long __pu_err = -EFAULT; \ - long __pu_addr = (long)(ptr); \ - __typeof__(*(ptr)) __pu_val = (x); \ - \ - if (__access_ok(__pu_addr, (size))) \ - __put_user_size((void *)&__pu_val, __pu_addr, (size), __pu_err);\ - __pu_err; \ -}) - extern long __put_user_asm_b(void *, long); extern long __put_user_asm_w(void *, long); extern long __put_user_asm_l(void *, long); extern long __put_user_asm_q(void *, long); extern void __put_user_unknown(void); - -/* Generic arbitrary sized copy. */ -/* Return the number of bytes NOT copied */ -/* XXX: should be such that: 4byte and the rest. */ -extern __kernel_size_t __copy_user(void *__to, const void *__from, __kernel_size_t __n); - -#define copy_to_user_ret(to,from,n,retval) ({ \ -if (copy_to_user(to,from,n)) \ - return retval; \ -}) - -#define __copy_to_user(to,from,n) \ - __copy_user((void *)(to), \ - (void *)(from), n) - -#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; \ -}) - -#define __copy_from_user(to,from,n) \ - __copy_user((void *)(to), \ - (void *)(from), n) - -#define __copy_from_user_ret(to,from,n,retval) ({ \ -if (__copy_from_user(to,from,n)) \ - return retval; \ -}) - -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user - -/* XXX: Not sure it works well.. - should be such that: 4byte clear and the rest. */ -extern __kernel_size_t __clear_user(void *addr, __kernel_size_t size); - -#define clear_user(addr,n) ({ \ -void * __cl_addr = (addr); \ -unsigned long __cl_size = (n); \ -if (__cl_size && __access_ok(((unsigned long)(__cl_addr)), __cl_size)) \ -__cl_size = __clear_user(__cl_addr, __cl_size); \ -__cl_size; }) - -extern int __strncpy_from_user(unsigned long __dest, unsigned long __src, int __count); - -#define strncpy_from_user(dest,src,count) ({ \ -unsigned long __sfu_src = (unsigned long) (src); \ -int __sfu_count = (int) (count); \ -long __sfu_res = -EFAULT; \ -if(__access_ok(__sfu_src, __sfu_count)) { \ -__sfu_res = __strncpy_from_user((unsigned long) (dest), __sfu_src, __sfu_count); \ -} __sfu_res; }) - -#define strlen_user(str) strnlen_user(str, ~0UL >> 1) - -/* - * Return the size of a string (including the ending 0!) - */ -extern long __strnlen_user(const char *__s, long __n); - -static inline long strnlen_user(const char *s, long n) -{ - if (!__addr_ok(s)) - return 0; - else - return __strnlen_user(s, n); -} - -struct exception_table_entry -{ - unsigned long insn, fixup; -}; - -#ifdef CONFIG_MMU -#define ARCH_HAS_SEARCH_EXTABLE -#endif - -/* Returns 0 if exception not found and fixup.unit otherwise. */ -extern unsigned long search_exception_table(unsigned long addr); -extern const struct exception_table_entry *search_exception_tables (unsigned long addr); - #endif /* __ASM_SH_UACCESS_64_H */ |