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
51
52
53
54
55
|
/* Multiple versions of bzero
Copyright (C) 2010 Free Software Foundation, Inc.
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>
.text
ENTRY(__bzero)
.type __bzero, @gnu_indirect_function
cmpl $0, __cpu_features+KIND_OFFSET(%rip)
jne 1f
call __init_cpu_features
1: leaq __bzero_x86_64(%rip), %rax
testl $bit_Prefer_SSE_for_memop, __cpu_features+FEATURE_OFFSET+index_Prefer_SSE_for_memop(%rip)
jz 2f
leaq __bzero_sse2(%rip), %rax
2: ret
END(__bzero)
.type __bzero_sse2, @function
__bzero_sse2:
cfi_startproc
CALL_MCOUNT
mov %rsi,%rdx /* Adjust parameter. */
xorl %esi,%esi /* Fill with 0s. */
jmp __memset_sse2
cfi_endproc
.size __bzero_sse2, .-__bzero_sse2
.type __bzero_x86_64, @function
__bzero_x86_64:
cfi_startproc
CALL_MCOUNT
mov %rsi,%rdx /* Adjust parameter. */
xorl %esi,%esi /* Fill with 0s. */
jmp __memset_x86_64
cfi_endproc
.size __bzero_x86_64, .-__bzero_x86_64
weak_alias (__bzero, bzero)
|
