blob: 1b4fbe2e6feaf4569929f4df344be388a608338f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/* Multiple versions of __memcpy_chk
All versions must be listed in ifunc-impl-list.c.
Copyright (C) 2010-2017 Free Software Foundation, Inc.
Contributed by Intel Corporation.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <init-arch.h>
/* Define multiple versions only for the definition in lib and for
DSO. There are no multiarch memcpy functions for static binaries.
*/
#if IS_IN (libc)
# ifdef SHARED
.text
ENTRY(__memcpy_chk)
.type __memcpy_chk, @gnu_indirect_function
LOAD_GOT_AND_RTLD_GLOBAL_RO
LOAD_FUNC_GOT_EAX (__memcpy_chk_ia32)
HAS_CPU_FEATURE (SSE2)
jz 2f
LOAD_FUNC_GOT_EAX (__memcpy_chk_sse2_unaligned)
HAS_ARCH_FEATURE (Fast_Unaligned_Load)
jnz 2f
HAS_CPU_FEATURE (SSSE3)
jz 2f
LOAD_FUNC_GOT_EAX (__memcpy_chk_ssse3)
HAS_ARCH_FEATURE (Fast_Rep_String)
jz 2f
LOAD_FUNC_GOT_EAX (__memcpy_chk_ssse3_rep)
2: ret
END(__memcpy_chk)
# else
# include "../memcpy_chk.S"
# endif
#endif
|
