diff options
Diffstat (limited to 'arch/unicore32/lib/strncpy_from_user.S')
| -rw-r--r-- | arch/unicore32/lib/strncpy_from_user.S | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/arch/unicore32/lib/strncpy_from_user.S b/arch/unicore32/lib/strncpy_from_user.S deleted file mode 100644 index ff6c304d5c7e..000000000000 --- a/arch/unicore32/lib/strncpy_from_user.S +++ /dev/null @@ -1,45 +0,0 @@ -/* - * linux/arch/unicore32/lib/strncpy_from_user.S - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Copyright (C) 2001-2010 GUAN Xue-tao - * - * 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/linkage.h> -#include <asm/assembler.h> -#include <asm/errno.h> - - .text - .align 5 - -/* - * Copy a string from user space to kernel space. - * r0 = dst, r1 = src, r2 = byte length - * returns the number of characters copied (strlen of copied string), - * -EFAULT on exception, or "len" if we fill the whole buffer - */ -ENTRY(__strncpy_from_user) - mov ip, r1 -1: sub.a r2, r2, #1 - ldrusr r3, r1, 1, ns - bfs 2f - stb.w r3, [r0]+, #1 - cxor.a r3, #0 - bne 1b - sub r1, r1, #1 @ take NUL character out of count -2: sub r0, r1, ip - mov pc, lr -ENDPROC(__strncpy_from_user) - - .pushsection .fixup,"ax" - .align 0 -9001: mov r3, #0 - stb r3, [r0+], #0 @ null terminate - mov r0, #-EFAULT - mov pc, lr - .popsection - |