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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* Multiple versions of __memset_chk
Copyright (C) 2010, 2012 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. */
#ifndef NOT_IN_libc
# ifdef SHARED
.text
ENTRY(__memset_chk)
.type __memset_chk, @gnu_indirect_function
pushl %ebx
cfi_adjust_cfa_offset (4)
cfi_rel_offset (ebx, 0)
LOAD_PIC_REG(bx)
cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
jne 1f
call __init_cpu_features
1: leal __memset_chk_ia32@GOTOFF(%ebx), %eax
testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
jz 2f
leal __memset_chk_sse2@GOTOFF(%ebx), %eax
testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx)
jz 2f
leal __memset_chk_sse2_rep@GOTOFF(%ebx), %eax
2: popl %ebx
cfi_adjust_cfa_offset (-4)
cfi_restore (ebx)
ret
END(__memset_chk)
strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
.section .gnu.warning.__memset_zero_constant_len_parameter
.string "memset used with constant zero length parameter; this could be due to transposed parameters"
# else
.text
ENTRY(__memset_chk)
.type __memset_chk, @gnu_indirect_function
cmpl $0, KIND_OFFSET+__cpu_features
jne 1f
call __init_cpu_features
1: leal __memset_chk_ia32, %eax
testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features
jz 2f
leal __memset_chk_sse2, %eax
testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features
jz 2f
leal __memset_chk_sse2_rep, %eax
2: ret
END(__memset_chk)
.type __memset_chk_sse2, @function
.p2align 4;
__memset_chk_sse2:
cfi_startproc
CALL_MCOUNT
movl 12(%esp), %eax
cmpl %eax, 16(%esp)
jb __chk_fail
jmp __memset_sse2
cfi_endproc
.size __memset_chk_sse2, .-__memset_chk_sse2
.type __memset_chk_sse2_rep, @function
.p2align 4;
__memset_chk_sse2_rep:
cfi_startproc
CALL_MCOUNT
movl 12(%esp), %eax
cmpl %eax, 16(%esp)
jb __chk_fail
jmp __memset_sse2_rep
cfi_endproc
.size __memset_chk_sse2_rep, .-__memset_chk_sse2_rep
.type __memset_chk_ia32, @function
.p2align 4;
__memset_chk_ia32:
cfi_startproc
CALL_MCOUNT
movl 12(%esp), %eax
cmpl %eax, 16(%esp)
jb __chk_fail
jmp __memset_ia32
cfi_endproc
.size __memset_chk_ia32, .-__memset_chk_ia32
# endif
#endif
|
