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bionic/x86: Optimization for string routines

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Optimized strcpy, strcat,
strncpy, strncat, strlcpy, strlcat,
memchr, memrchr, strchr, strrchr, index,
strnlen, strlen, wcslen, wmemcmp, wcscmp,
wcschr, wcsrchr, wcscpy, wcscat

Change-Id: I82b29132edf9a2e144e0bb3ee4ff5217df8d2a6d
Signed-off-by: Liubov Dmitrieva <liubov.dmitrieva@intel.com>
This commit is contained in:
Liubov Dmitrieva
2012-01-17 12:55:46 +04:00
parent 8d79fd1c94
commit 0a490665a3
39 changed files with 13747 additions and 631 deletions
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48
libc/string/__strrchr_chk.c Normal file
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@@ -0,0 +1,48 @@
/* $OpenBSD: rindex.c,v 1.6 2005/08/08 08:05:37 espie Exp $ */
/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <string.h>
#include "libc_logging.h"
char *
__strrchr_chk(const char *p, int ch, size_t s_len)
{
char *save;
for (save = NULL;; ++p, s_len--) {
if (s_len == 0)
__fortify_chk_fail("strrchr read beyond buffer", 0);
if (*p == (char) ch)
save = (char *)p;
if (!*p)
return(save);
}
/* NOTREACHED */
}

17
libc/string/strrchr.c
View File

@@ -29,23 +29,6 @@
*/
#include <string.h>
#include "libc_logging.h"
char *
__strrchr_chk(const char *p, int ch, size_t s_len)
{
char *save;
for (save = NULL;; ++p, s_len--) {
if (s_len == 0)
__fortify_chk_fail("strrchr read beyond buffer", 0);
if (*p == (char) ch)
save = (char *)p;
if (!*p)
return(save);
}
/* NOTREACHED */
}
char *
strrchr(const char *p, int ch)