summaryrefslogtreecommitdiffstats
path: root/arch/tile/lib/strnlen_64.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/tile/lib/strnlen_64.c')
-rw-r--r--arch/tile/lib/strnlen_64.c48
1 files changed, 0 insertions, 48 deletions
diff --git a/arch/tile/lib/strnlen_64.c b/arch/tile/lib/strnlen_64.c
deleted file mode 100644
index 2e8de6a5136f..000000000000
--- a/arch/tile/lib/strnlen_64.c
+++ /dev/null
@@ -1,48 +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>
-#include "string-endian.h"
-
-size_t strnlen(const char *s, size_t count)
-{
- /* Get an aligned pointer. */
- const uintptr_t s_int = (uintptr_t) s;
- const uint64_t *p = (const uint64_t *)(s_int & -8);
- size_t bytes_read = sizeof(*p) - (s_int & (sizeof(*p) - 1));
- size_t len;
- uint64_t v, bits;
-
- /* Avoid page fault risk by not reading any bytes when count is 0. */
- if (count == 0)
- return 0;
-
- /* Read and MASK the first word. */
- v = *p | MASK(s_int);
-
- while ((bits = __insn_v1cmpeqi(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) + (CFZ(bits) >> 3) - s;
- return (len < count ? len : count);
-}
-EXPORT_SYMBOL(strnlen);
OpenPOWER on IntegriCloud