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6fb8cbcb | 1 | /* Multiple versions of __memcpy_chk |
ac49ecaf | 2 | All versions must be listed in ifunc-impl-list.c. |
b168057a | 3 | Copyright (C) 2010-2015 Free Software Foundation, Inc. |
6fb8cbcb L |
4 | Contributed by Intel Corporation. |
5 | This file is part of the GNU C Library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ | |
6fb8cbcb L |
20 | |
21 | #include <sysdep.h> | |
22 | #include <init-arch.h> | |
23 | ||
24 | /* Define multiple versions only for the definition in lib and for | |
25 | DSO. There are no multiarch memcpy functions for static binaries. | |
26 | */ | |
4f41c682 | 27 | #if IS_IN (libc) |
6fb8cbcb L |
28 | # ifdef SHARED |
29 | .text | |
30 | ENTRY(__memcpy_chk) | |
31 | .type __memcpy_chk, @gnu_indirect_function | |
32 | cmpl $0, KIND_OFFSET+__cpu_features(%rip) | |
33 | jne 1f | |
34 | call __init_cpu_features | |
35 | 1: leaq __memcpy_chk_sse2(%rip), %rax | |
36 | testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) | |
37 | jz 2f | |
38 | leaq __memcpy_chk_ssse3(%rip), %rax | |
39 | testl $bit_Fast_Copy_Backward, __cpu_features+FEATURE_OFFSET+index_Fast_Copy_Backward(%rip) | |
40 | jz 2f | |
41 | leaq __memcpy_chk_ssse3_back(%rip), %rax | |
05f3633d LM |
42 | testl $bit_AVX_Usable, __cpu_features+FEATURE_OFFSET+index_AVX_Usable(%rip) |
43 | jz 2f | |
44 | leaq __memcpy_chk_avx_unaligned(%rip), %rax | |
6fb8cbcb L |
45 | 2: ret |
46 | END(__memcpy_chk) | |
47 | # else | |
48 | # include "../memcpy_chk.S" | |
49 | # endif | |
50 | #endif |