1 /* Multiple versions of mempcpy
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2010-2016 Free Software Foundation, Inc.
4 Contributed by Intel Corporation.
5 This file is part of the GNU C Library.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
22 #include <init-arch.h>
24 /* Define multiple versions only for the definition in lib and for
25 DSO. In static binaries we need mempcpy before the initialization
27 #if defined SHARED && IS_IN (libc)
30 .type __mempcpy, @gnu_indirect_function
31 LOAD_RTLD_GLOBAL_RO_RDX
32 lea __mempcpy_erms(%rip), %RAX_LP
33 HAS_ARCH_FEATURE (Prefer_ERMS)
35 # ifdef HAVE_AVX512_ASM_SUPPORT
36 HAS_ARCH_FEATURE (AVX512F_Usable)
38 lea __mempcpy_avx512_no_vzeroupper(%rip), %RAX_LP
39 HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
41 lea __mempcpy_avx512_unaligned_erms(%rip), %RAX_LP
42 HAS_CPU_FEATURE (ERMS)
44 lea __mempcpy_avx512_unaligned(%rip), %RAX_LP
47 1: lea __mempcpy_avx_unaligned(%rip), %RAX_LP
48 HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
49 jz L(Fast_Unaligned_Load)
50 HAS_CPU_FEATURE (ERMS)
52 lea __mempcpy_avx_unaligned_erms(%rip), %RAX_LP
54 L(Fast_Unaligned_Load):
55 lea __mempcpy_sse2_unaligned(%rip), %RAX_LP
56 HAS_ARCH_FEATURE (Fast_Unaligned_Copy)
58 HAS_CPU_FEATURE (ERMS)
60 lea __mempcpy_sse2_unaligned_erms(%rip), %RAX_LP
63 HAS_CPU_FEATURE (SSSE3)
65 lea __mempcpy_ssse3_back(%rip), %RAX_LP
66 HAS_ARCH_FEATURE (Fast_Copy_Backward)
68 lea __mempcpy_ssse3(%rip), %RAX_LP
72 weak_alias (__mempcpy, mempcpy)