1/* Multiple versions of strcmp.
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2017 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 <http://www.gnu.org/licenses/>. */
19
20/* Define multiple versions only for the definition in libc. */
21#if IS_IN (libc)
22# define strcmp __redirect_strcmp
23# include <string.h>
24# undef strcmp
25
26# define SYMBOL_NAME strcmp
27# include <init-arch.h>
28
29extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
30extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden;
31extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
32
33static inline void *
34IFUNC_SELECTOR (void)
35{
36 const struct cpu_features* cpu_features = __get_cpu_features ();
37
38 if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load))
39 return OPTIMIZE (sse2_unaligned);
40
41 if (CPU_FEATURES_CPU_P (cpu_features, SSSE3))
42 return OPTIMIZE (ssse3);
43
44 return OPTIMIZE (sse2);
45}
46
47libc_ifunc_redirected (__redirect_strcmp, strcmp, IFUNC_SELECTOR ());
48
49# ifdef SHARED
50__hidden_ver1 (strcmp, __GI_strcmp, __redirect_strcmp)
51 __attribute__ ((visibility ("hidden")));
52# endif
53#endif
54