1 /* Multiple versions of memcpy. PowerPC64 version.
2    Copyright (C) 2013-2021 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 /* Define multiple versions only for the definition in lib and for
20    DSO.  In static binaries we need memcpy before the initialization
21    happened.  */
22 #if defined SHARED && IS_IN (libc)
23 /* Redefine memcpy so that the compiler won't complain about the type
24    mismatch with the IFUNC selector in strong_alias, below.  */
25 # undef memcpy
26 # define memcpy __redirect_memcpy
27 # include <string.h>
28 # include "init-arch.h"
29 
30 extern __typeof (__redirect_memcpy) __libc_memcpy;
31 
32 extern __typeof (__redirect_memcpy) __memcpy_ppc attribute_hidden;
33 extern __typeof (__redirect_memcpy) __memcpy_power4 attribute_hidden;
34 extern __typeof (__redirect_memcpy) __memcpy_cell attribute_hidden;
35 extern __typeof (__redirect_memcpy) __memcpy_power6 attribute_hidden;
36 extern __typeof (__redirect_memcpy) __memcpy_a2 attribute_hidden;
37 extern __typeof (__redirect_memcpy) __memcpy_power7 attribute_hidden;
38 extern __typeof (__redirect_memcpy) __memcpy_power8_cached attribute_hidden;
39 # if defined __LITTLE_ENDIAN__
40 extern __typeof (__redirect_memcpy) __memcpy_power10 attribute_hidden;
41 # endif
42 
43 libc_ifunc (__libc_memcpy,
44 # if defined __LITTLE_ENDIAN__
45 	    (hwcap2 & PPC_FEATURE2_ARCH_3_1 && hwcap & PPC_FEATURE_HAS_VSX)
46 	    ? __memcpy_power10 :
47 # endif
48 	    (hwcap2 & PPC_FEATURE2_ARCH_2_07
49 	     && hwcap & PPC_FEATURE_HAS_ALTIVEC
50 	     && use_cached_memopt)
51 	    ? __memcpy_power8_cached :
52 	      (hwcap & PPC_FEATURE_ARCH_2_06
53 	       && hwcap & PPC_FEATURE_HAS_ALTIVEC)
54 	      ? __memcpy_power7 :
55 		(hwcap & PPC_FEATURE_ARCH_2_06)
56 		? __memcpy_a2 :
57 		  (hwcap & PPC_FEATURE_ARCH_2_05)
58 		  ? __memcpy_power6 :
59 		    (hwcap & PPC_FEATURE_CELL_BE)
60 		    ? __memcpy_cell :
61 		      (hwcap & PPC_FEATURE_POWER4)
62 		      ? __memcpy_power4
63             : __memcpy_ppc);
64 
65 #undef memcpy
66 strong_alias (__libc_memcpy, memcpy);
67 libc_hidden_ver (__libc_memcpy, memcpy);
68 #endif
69