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Diffstat (limited to 'arch/tile/lib/strnlen_32.c')
-rw-r--r--arch/tile/lib/strnlen_32.c47
1 files changed, 0 insertions, 47 deletions
diff --git a/arch/tile/lib/strnlen_32.c b/arch/tile/lib/strnlen_32.c
deleted file mode 100644
index 1434141d9e01..000000000000
--- a/arch/tile/lib/strnlen_32.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright 2013 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 strnlen(const char *s, size_t count)
-{
- /* Get an aligned pointer. */
- const uintptr_t s_int = (uintptr_t) s;
- const uint32_t *p = (const uint32_t *)(s_int & -4);
- size_t bytes_read = sizeof(*p) - (s_int & (sizeof(*p) - 1));
- size_t len;
- uint32_t v, bits;
-
- /* Avoid page fault risk by not reading any bytes when count is 0. */
- if (count == 0)
- return 0;
-
- /* Read first word, but force bytes before the string to be nonzero. */
- v = *p | ((1 << ((s_int << 3) & 31)) - 1);
-
- while ((bits = __insn_seqb(v, 0)) == 0) {
- if (bytes_read >= count) {
- /* Read COUNT bytes and didn't find the terminator. */
- return count;
- }
- v = *++p;
- bytes_read += sizeof(v);
- }
-
- len = ((const char *) p) + (__insn_ctz(bits) >> 3) - s;
- return (len < count ? len : count);
-}
-EXPORT_SYMBOL(strnlen);