1 /* Enumerate available IFUNC implementations of a function. AARCH64 version.
2 Copyright (C) 2017-2021 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 #include <assert.h>
20 #include <string.h>
21 #include <wchar.h>
22 #include <ldsodefs.h>
23 #include <ifunc-impl-list.h>
24 #include <init-arch.h>
25 #include <stdio.h>
26
27 /* Maximum number of IFUNC implementations. */
28 #define MAX_IFUNC 7
29
30 size_t
__libc_ifunc_impl_list(const char * name,struct libc_ifunc_impl * array,size_t max)31 __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
32 size_t max)
33 {
34 assert (max >= MAX_IFUNC);
35
36 size_t i = 0;
37
38 INIT_ARCH ();
39
40 /* Support sysdeps/aarch64/multiarch/memcpy.c, memmove.c and memset.c. */
41 IFUNC_IMPL (i, name, memcpy,
42 IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_thunderx)
43 IFUNC_IMPL_ADD (array, i, memcpy, !bti, __memcpy_thunderx2)
44 IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_falkor)
45 IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_simd)
46 #if HAVE_AARCH64_SVE_ASM
47 IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_a64fx)
48 #endif
49 IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_generic))
50 IFUNC_IMPL (i, name, memmove,
51 IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_thunderx)
52 IFUNC_IMPL_ADD (array, i, memmove, !bti, __memmove_thunderx2)
53 IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_falkor)
54 IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_simd)
55 #if HAVE_AARCH64_SVE_ASM
56 IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_a64fx)
57 #endif
58 IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_generic))
59 IFUNC_IMPL (i, name, memset,
60 /* Enable this on non-falkor processors too so that other cores
61 can do a comparative analysis with __memset_generic. */
62 IFUNC_IMPL_ADD (array, i, memset, (zva_size == 64), __memset_falkor)
63 IFUNC_IMPL_ADD (array, i, memset, (zva_size == 64), __memset_emag)
64 IFUNC_IMPL_ADD (array, i, memset, 1, __memset_kunpeng)
65 #if HAVE_AARCH64_SVE_ASM
66 IFUNC_IMPL_ADD (array, i, memset, sve, __memset_a64fx)
67 #endif
68 IFUNC_IMPL_ADD (array, i, memset, 1, __memset_generic))
69 IFUNC_IMPL (i, name, memchr,
70 IFUNC_IMPL_ADD (array, i, memchr, !mte, __memchr_nosimd)
71 IFUNC_IMPL_ADD (array, i, memchr, 1, __memchr_generic))
72
73 IFUNC_IMPL (i, name, strlen,
74 IFUNC_IMPL_ADD (array, i, strlen, !mte, __strlen_asimd)
75 IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_mte))
76
77 return i;
78 }
79