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
|
/* Static library error handling code fragment for Nios II.
Copyright (C) 2015-2016 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>
/* The following code is only used in the static library. In the shared
library, the error handling code is at the end of each function. */
#ifndef PIC
/* In the static library, the syscall stubs jump here when they detect
an error. */
# undef CALL_MCOUNT
# define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2. */
# if IS_IN (libc)
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
.text
ENTRY (__syscall_error)
nextpc r3
1:
movhi r8, %hiadj(_gp_got - 1b)
addi r8, r8, %lo(_gp_got - 1b)
add r3, r3, r8
ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3)
add r3, r23, r3
stw r2, 0(r3)
movi r2, -1
ret
END (__syscall_error)
#endif
|
