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
|
/* Copyright (C) 1991-2015 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>
#define _ERRNO_H
#include <bits/errno.h>
#if IS_IN (rtld)
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#endif
.globl C_SYMBOL_NAME(errno)
.globl syscall_error
__syscall_error:
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */
jne notb /* Branch if not. */
movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
notb:
#endif
#ifndef PIC
# ifndef NO_TLS_DIRECT_SEG_REFS
movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF)
# else
movl %gs:0, %ecx
movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx)
# endif
#else
/* The caller has pushed %ebx and then set it up to
point to the GOT before calling us through the PLT. */
movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx
/* Pop %ebx value saved before jumping here. */
popl %ebx
# ifndef NO_TLS_DIRECT_SEG_REFS
addl %gs:0, %ecx
movl %eax, (%ecx)
# else
movl %eax, %gs:0(%ecx)
# endif
#endif
movl $-1, %eax
ret
#undef __syscall_error
END (__syscall_error)
|
