diff options
Diffstat (limited to 'arch/tile/lib/strlen_32.c')
-rw-r--r-- | arch/tile/lib/strlen_32.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/tile/lib/strlen_32.c b/arch/tile/lib/strlen_32.c deleted file mode 100644 index f26f88e11e4a..000000000000 --- a/arch/tile/lib/strlen_32.c +++ /dev/null @@ -1,36 +0,0 @@ -/* - * Copyright 2010 Tilera Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - */ - -#include <linux/types.h> -#include <linux/string.h> -#include <linux/module.h> - -size_t strlen(const char *s) -{ - /* Get an aligned pointer. */ - const uintptr_t s_int = (uintptr_t) s; - const uint32_t *p = (const uint32_t *)(s_int & -4); - - /* Read the first word, but force bytes before the string to be nonzero. - * This expression works because we know shift counts are taken mod 32. - */ - uint32_t v = *p | ((1 << (s_int << 3)) - 1); - - uint32_t bits; - while ((bits = __insn_seqb(v, 0)) == 0) - v = *++p; - - return ((const char *)p) + (__insn_ctz(bits) >> 3) - s; -} -EXPORT_SYMBOL(strlen); |