diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/lib/uaccess.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/m68k/lib/uaccess.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/lib/uaccess.c b/ANDROID_3.4.5/arch/m68k/lib/uaccess.c deleted file mode 100644 index 56643863..00000000 --- a/ANDROID_3.4.5/arch/m68k/lib/uaccess.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/module.h> -#include <asm/uaccess.h> - -unsigned long __generic_copy_from_user(void *to, const void __user *from, - unsigned long n) -{ - unsigned long tmp, res; - - asm volatile ("\n" - " tst.l %0\n" - " jeq 2f\n" - "1: "MOVES".l (%1)+,%3\n" - " move.l %3,(%2)+\n" - " subq.l #1,%0\n" - " jne 1b\n" - "2: btst #1,%5\n" - " jeq 4f\n" - "3: "MOVES".w (%1)+,%3\n" - " move.w %3,(%2)+\n" - "4: btst #0,%5\n" - " jeq 6f\n" - "5: "MOVES".b (%1)+,%3\n" - " move.b %3,(%2)+\n" - "6:\n" - " .section .fixup,\"ax\"\n" - " .even\n" - "10: move.l %0,%3\n" - "7: clr.l (%2)+\n" - " subq.l #1,%3\n" - " jne 7b\n" - " lsl.l #2,%0\n" - " btst #1,%5\n" - " jeq 8f\n" - "30: clr.w (%2)+\n" - " addq.l #2,%0\n" - "8: btst #0,%5\n" - " jeq 6b\n" - "50: clr.b (%2)+\n" - " addq.l #1,%0\n" - " jra 6b\n" - " .previous\n" - "\n" - " .section __ex_table,\"a\"\n" - " .align 4\n" - " .long 1b,10b\n" - " .long 3b,30b\n" - " .long 5b,50b\n" - " .previous" - : "=d" (res), "+a" (from), "+a" (to), "=&r" (tmp) - : "0" (n / 4), "d" (n & 3)); - - return res; -} -EXPORT_SYMBOL(__generic_copy_from_user); - -unsigned long __generic_copy_to_user(void __user *to, const void *from, - unsigned long n) -{ - unsigned long tmp, res; - - asm volatile ("\n" - " tst.l %0\n" - " jeq 4f\n" - "1: move.l (%1)+,%3\n" - "2: "MOVES".l %3,(%2)+\n" - "3: subq.l #1,%0\n" - " jne 1b\n" - "4: btst #1,%5\n" - " jeq 6f\n" - " move.w (%1)+,%3\n" - "5: "MOVES".w %3,(%2)+\n" - "6: btst #0,%5\n" - " jeq 8f\n" - " move.b (%1)+,%3\n" - "7: "MOVES".b %3,(%2)+\n" - "8:\n" - " .section .fixup,\"ax\"\n" - " .even\n" - "20: lsl.l #2,%0\n" - "50: add.l %5,%0\n" - " jra 8b\n" - " .previous\n" - "\n" - " .section __ex_table,\"a\"\n" - " .align 4\n" - " .long 2b,20b\n" - " .long 3b,20b\n" - " .long 5b,50b\n" - " .long 6b,50b\n" - " .long 7b,50b\n" - " .long 8b,50b\n" - " .previous" - : "=d" (res), "+a" (from), "+a" (to), "=&r" (tmp) - : "0" (n / 4), "d" (n & 3)); - - return res; -} -EXPORT_SYMBOL(__generic_copy_to_user); - -/* - * Copy a null terminated string from userspace. - */ -long strncpy_from_user(char *dst, const char __user *src, long count) -{ - long res; - char c; - - if (count <= 0) - return count; - - asm volatile ("\n" - "1: "MOVES".b (%2)+,%4\n" - " move.b %4,(%1)+\n" - " jeq 2f\n" - " subq.l #1,%3\n" - " jne 1b\n" - "2: sub.l %3,%0\n" - "3:\n" - " .section .fixup,\"ax\"\n" - " .even\n" - "10: move.l %5,%0\n" - " jra 3b\n" - " .previous\n" - "\n" - " .section __ex_table,\"a\"\n" - " .align 4\n" - " .long 1b,10b\n" - " .previous" - : "=d" (res), "+a" (dst), "+a" (src), "+r" (count), "=&d" (c) - : "i" (-EFAULT), "0" (count)); - - return res; -} -EXPORT_SYMBOL(strncpy_from_user); - -/* - * Return the size of a string (including the ending 0) - * - * Return 0 on exception, a value greater than N if too long - */ -long strnlen_user(const char __user *src, long n) -{ - char c; - long res; - - asm volatile ("\n" - "1: subq.l #1,%1\n" - " jmi 3f\n" - "2: "MOVES".b (%0)+,%2\n" - " tst.b %2\n" - " jne 1b\n" - " jra 4f\n" - "\n" - "3: addq.l #1,%0\n" - "4: sub.l %4,%0\n" - "5:\n" - " .section .fixup,\"ax\"\n" - " .even\n" - "20: sub.l %0,%0\n" - " jra 5b\n" - " .previous\n" - "\n" - " .section __ex_table,\"a\"\n" - " .align 4\n" - " .long 2b,20b\n" - " .previous\n" - : "=&a" (res), "+d" (n), "=&d" (c) - : "0" (src), "r" (src)); - - return res; -} -EXPORT_SYMBOL(strnlen_user); - -/* - * Zero Userspace - */ - -unsigned long __clear_user(void __user *to, unsigned long n) -{ - unsigned long res; - - asm volatile ("\n" - " tst.l %0\n" - " jeq 3f\n" - "1: "MOVES".l %2,(%1)+\n" - "2: subq.l #1,%0\n" - " jne 1b\n" - "3: btst #1,%4\n" - " jeq 5f\n" - "4: "MOVES".w %2,(%1)+\n" - "5: btst #0,%4\n" - " jeq 7f\n" - "6: "MOVES".b %2,(%1)\n" - "7:\n" - " .section .fixup,\"ax\"\n" - " .even\n" - "10: lsl.l #2,%0\n" - "40: add.l %4,%0\n" - " jra 7b\n" - " .previous\n" - "\n" - " .section __ex_table,\"a\"\n" - " .align 4\n" - " .long 1b,10b\n" - " .long 2b,10b\n" - " .long 4b,40b\n" - " .long 5b,40b\n" - " .long 6b,40b\n" - " .long 7b,40b\n" - " .previous" - : "=d" (res), "+a" (to) - : "r" (0), "0" (n / 4), "d" (n & 3)); - - return res; -} -EXPORT_SYMBOL(__clear_user); |