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
|
/* Copyright (C) 1991-2020 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
<https://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
#include <tls.h>
#undef 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. */
cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */
it eq
moveq r0, $EAGAIN /* Yes; translate it to EAGAIN. */
#endif
#if !IS_IN (rtld)
mov r1, r0
GET_TLS (r2)
ldr r2, 1f
#ifdef __thumb__
2: add r2, r2, pc
ldr r2, [r2]
#else
2: ldr r2, [pc, r2]
#endif
str r1, [r0, r2]
mvn r0, #0
DO_RET(lr)
1: .word errno(gottpoff) + (. - 2b - PC_OFS)
#elif RTLD_PRIVATE_ERRNO
LDST_PCREL(str, r0, r1, C_SYMBOL_NAME(rtld_errno))
mvn r0, #0
DO_RET(r14)
#else
#error "Unsupported non-TLS case"
#endif
#undef __syscall_error
END (__syscall_error)
|
