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S390: Use memcpy for forward cases in memmove. 

The s390/s390x memcpy implementations are safe to be
used by memmove.  Starting with this commit, memmove is
using memcpy for the forward cases on s390.

ChangeLog:

	* sysdeps/s390/memcopy.h: New file.
This commit is contained in:
Stefan Liebler 2018-12-18 13:57:07 +01:00
parent e099aab060
commit d097d97626
2 changed files with 27 additions and 0 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
* sysdeps/s390/memcopy.h: New file.
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
* sysdeps/s390/s390-32/bcopy.S: Remove.

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sysdeps/s390/memcopy.h Normal file
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/* memcopy.h -- definitions for memory copy functions.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdeps/generic/memcopy.h>
/* The s390/s390x memcpy implementations are safe to be used by memmove. */
#undef MEMCPY_OK_FOR_FWD_MEMMOVE
#define MEMCPY_OK_FOR_FWD_MEMMOVE 1