1 /* Multiple versions of wcscpy.
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2017-2021 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20 /* Define multiple versions only for the definition in libc. */
21 #if IS_IN (libc)
22 # define __wcscpy __redirect_wcscpy
23 # include <wchar.h>
24 # undef __wcscpy
25
26 # define SYMBOL_NAME wcscpy
27 # include <init-arch.h>
28
29 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
30 extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
31
32 static inline void *
IFUNC_SELECTOR(void)33 IFUNC_SELECTOR (void)
34 {
35 const struct cpu_features* cpu_features = __get_cpu_features ();
36
37 if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
38 return OPTIMIZE (ssse3);
39
40 return OPTIMIZE (sse2);
41 }
42
43 libc_ifunc_redirected (__redirect_wcscpy, __wcscpy, IFUNC_SELECTOR ());
44 weak_alias (__wcscpy, wcscpy)
45 # ifdef SHARED
46 __hidden_ver1 (__wcscpy, __GI___wcscpy, __redirect_wcscpy)
47 __attribute__((visibility ("hidden"))) __attribute_copy__ (wcscpy);
48 # endif
49 #endif
50