From d097d97626e44bc6e76d5daf80ce3ff7d147b623 Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Tue, 18 Dec 2018 13:57:07 +0100 Subject: [PATCH] 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. --- ChangeLog | 4 ++++ sysdeps/s390/memcopy.h | 23 +++++++++++++++++++++++ 2 files changed, 27 insertions(+) create mode 100644 sysdeps/s390/memcopy.h diff --git a/ChangeLog b/ChangeLog index 5109bea55c..8f9e2e9d9a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2018-12-18 Stefan Liebler + + * sysdeps/s390/memcopy.h: New file. + 2018-12-18 Stefan Liebler * sysdeps/s390/s390-32/bcopy.S: Remove. diff --git a/sysdeps/s390/memcopy.h b/sysdeps/s390/memcopy.h new file mode 100644 index 0000000000..9a76196502 --- /dev/null +++ b/sysdeps/s390/memcopy.h @@ -0,0 +1,23 @@ +/* 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 + . */ + +#include + +/* 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