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
|
/* Copyright (C) 1991, 92, 93, 94, 95, 96 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <sysdep.h>
#define _ERRNO_H
#include <errnos.h>
.globl C_SYMBOL_NAME(errno)
.globl syscall_error
#undef syscall_error
#ifdef NO_UNDERSCORES
__syscall_error:
#else
syscall_error:
#endif
#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
movl %eax, C_SYMBOL_NAME(errno)
#ifdef _LIBC_REENTRANT
pushl %eax
call __errno_location
popl %ecx
movl %ecx, (%eax)
#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@GOT)(%ebx), %ecx
#ifndef _LIBC_REENTRANT
/* Pop %ebx value saved before jumping here. */
popl %ebx
movl %eax, (%ecx)
#else
movl %eax, (%ecx)
pushl %eax
call C_SYMBOL_NAME(__errno_location@PLT)
popl %ecx
/* Pop %ebx value saved before jumping here. */
popl %ebx
movl %ecx, (%eax)
#endif
#endif
movl $-1, %eax
ret
#ifdef __ELF__
#undef __syscall_error
.Lfe2:
.size __syscall_error, .Lfe2-__syscall_error
#endif
|
