1/* Multiple versions of memcpy.
2 Copyright (C) 2015-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <ifunc-memcpy.h>
20
21#if HAVE_MEMCPY_IFUNC
22# define memcpy __redirect_memcpy
23# include <string.h>
24# undef memcpy
25# include <ifunc-resolve.h>
26
27# if HAVE_MEMCPY_Z900_G5
28extern __typeof (__redirect_memcpy) MEMCPY_Z900_G5 attribute_hidden;
29# endif
30
31# if HAVE_MEMCPY_Z10
32extern __typeof (__redirect_memcpy) MEMCPY_Z10 attribute_hidden;
33# endif
34
35# if HAVE_MEMCPY_Z196
36extern __typeof (__redirect_memcpy) MEMCPY_Z196 attribute_hidden;
37# endif
38
39s390_libc_ifunc_expr (__redirect_memcpy, memcpy,
40 ({
41 s390_libc_ifunc_expr_stfle_init ();
42 (HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
43 ? MEMCPY_Z196
44 : (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
45 ? MEMCPY_Z10
46 : MEMCPY_DEFAULT;
47 })
48 )
49#endif
50

source code of glibc/sysdeps/s390/memcpy.c