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Diffstat (limited to 'arch/tile/lib/memchr_32.c')
-rw-r--r--arch/tile/lib/memchr_32.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/arch/tile/lib/memchr_32.c b/arch/tile/lib/memchr_32.c
deleted file mode 100644
index cc3d9badf030..000000000000
--- a/arch/tile/lib/memchr_32.c
+++ /dev/null
@@ -1,71 +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>
-
-void *memchr(const void *s, int c, size_t n)
-{
-	const uint32_t *last_word_ptr;
-	const uint32_t *p;
-	const char *last_byte_ptr;
-	uintptr_t s_int;
-	uint32_t goal, before_mask, v, bits;
-	char *ret;
-
-	if (__builtin_expect(n == 0, 0)) {
-		/* Don't dereference any memory if the array is empty. */
-		return NULL;
-	}
-
-	/* Get an aligned pointer. */
-	s_int = (uintptr_t) s;
-	p = (const uint32_t *)(s_int & -4);
-
-	/* Create four copies of the byte for which we are looking. */
-	goal = 0x01010101 * (uint8_t) c;
-
-	/* Read the first word, but munge it so that bytes before the array
-	 * will not match goal.
-	 *
-	 * Note that this shift count expression works because we know
-	 * shift counts are taken mod 32.
-	 */
-	before_mask = (1 << (s_int << 3)) - 1;
-	v = (*p | before_mask) ^ (goal & before_mask);
-
-	/* Compute the address of the last byte. */
-	last_byte_ptr = (const char *)s + n - 1;
-
-	/* Compute the address of the word containing the last byte. */
-	last_word_ptr = (const uint32_t *)((uintptr_t) last_byte_ptr & -4);
-
-	while ((bits = __insn_seqb(v, goal)) == 0) {
-		if (__builtin_expect(p == last_word_ptr, 0)) {
-			/* We already read the last word in the array,
-			 * so give up.
-			 */
-			return NULL;
-		}
-		v = *++p;
-	}
-
-	/* We found a match, but it might be in a byte past the end
-	 * of the array.
-	 */
-	ret = ((char *)p) + (__insn_ctz(bits) >> 3);
-	return (ret <= last_byte_ptr) ? ret : NULL;
-}
-EXPORT_SYMBOL(memchr);