1 /* Multiple versions of memset_chk
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2014-2015 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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.
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.
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/>. */
21 #include <init-arch.h>
23 /* Define multiple versions only for the definition in lib. */
25 # if defined SHARED && defined HAVE_AVX2_SUPPORT
27 .type __memset_chk, @gnu_indirect_function
28 cmpl $0, __cpu_features+KIND_OFFSET(%rip)
30 call __init_cpu_features
31 1: leaq __memset_chk_sse2(%rip), %rax
32 testl $bit_AVX2_Usable, __cpu_features+FEATURE_OFFSET+index_AVX2_Usable(%rip)
34 leaq __memset_chk_avx2(%rip), %rax
38 strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
39 .section .gnu.warning.__memset_zero_constant_len_parameter
40 .string "memset used with constant zero length parameter; this could be due to transposed parameters"
42 # include "../memset_chk.S"