diff options
Diffstat (limited to 'arch/avr32/lib/strncpy_from_user.S')
| -rw-r--r-- | arch/avr32/lib/strncpy_from_user.S | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/arch/avr32/lib/strncpy_from_user.S b/arch/avr32/lib/strncpy_from_user.S deleted file mode 100644 index 72bd50599ec6..000000000000 --- a/arch/avr32/lib/strncpy_from_user.S +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copy to/from userspace with optional address space checking. - * - * Copyright 2004-2006 Atmel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/errno.h> - -#include <asm/page.h> -#include <asm/thread_info.h> -#include <asm/asm.h> - - /* - * long strncpy_from_user(char *dst, const char *src, long count) - * - * On success, returns the length of the string, not including - * the terminating NUL. - * - * If the string is longer than count, returns count - * - * If userspace access fails, returns -EFAULT - */ - .text - .align 1 - .global strncpy_from_user - .type strncpy_from_user, "function" -strncpy_from_user: - mov r9, -EFAULT - branch_if_kernel r8, __strncpy_from_user - ret_if_privileged r8, r11, r10, r9 - - .global __strncpy_from_user - .type __strncpy_from_user, "function" -__strncpy_from_user: - cp.w r10, 0 - reteq 0 - - mov r9, r10 - -1: ld.ub r8, r11++ - st.b r12++, r8 - cp.w r8, 0 - breq 2f - sub r9, 1 - brne 1b - -2: sub r10, r9 - retal r10 - - .section .fixup, "ax" - .align 1 -3: mov r12, -EFAULT - retal r12 - - .section __ex_table, "a" - .align 2 - .long 1b, 3b |