diff options
author | Adrian Bunk <bunk@stusta.de> | 2007-07-31 00:38:19 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-31 15:39:39 -0700 |
commit | 99eb8a550dbccc0e1f6c7e866fe421810e0585f6 (patch) | |
tree | 130c6e3338a0655ba74355eba83afab9261e1ed0 /include/asm-arm26/uaccess.h | |
parent | 0d0ed42e5ca2e22465c591341839c18025748fe8 (diff) |
Remove the arm26 port
The arm26 port has been in a state where it was far from even compiling
for quite some time.
Ian Molton agreed with the removal.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-arm26/uaccess.h')
-rw-r--r-- | include/asm-arm26/uaccess.h | 293 |
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 */ |