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
106
107
108
109
110
111
112
113
114
115
|
/* Copyright (C) 1999-2022 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>
#include <errno.h>
ENTRY(__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. */
mov.l .L1, r1
cmp/eq r1, r0
bf skip
nop
mov.l .L2, r0
skip:
#endif
/* Store it in errno... */
#ifndef SHARED
#ifndef _LIBC_REENTRANT
mov.l .L3, r1
mov.l r0, @r1
#else
mov.l .L3, r1
sts.l pr, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (pr, 0)
mov.l r0, @-r15
cfi_adjust_cfa_offset (4)
jsr @r1
nop
mov.l @r15+, r1
cfi_adjust_cfa_offset (-4)
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l r1, @r0
#endif
#else
mov.l r12, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r12, 0)
#ifndef _LIBC_REENTRANT
mov r0, r2
mov.l 0f, r12
mova 0f, r0
add r0, r12
mov.l .L3, r0
mov.l @(r0,r12), r1
mov.l r2, @r1
#else
mov.l r0, @-r15
cfi_adjust_cfa_offset (4)
sts.l pr, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (pr, 0)
mov.l 0f, r12
mova 0f, r0
add r0, r12
mov.l .L3, r1
mova .L3, r0
add r0, r1
jsr @r1
nop
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l @r15+, r1
cfi_adjust_cfa_offset (-4)
mov.l r1, @r0
#endif
mov.l @r15+, r12
cfi_adjust_cfa_offset (-4)
cfi_restore (r12)
#endif
/* And just kick back a -1. */
rts
mov #-1, r0
.align 2
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
.L1: .long EWOULDBLOCK_sys
.L2: .long EAGAIN
#endif
#ifndef SHARED
#ifndef _LIBC_REENTRANT
.L3: .long C_SYMBOL_NAME(errno)
#else
.L3: .long C_SYMBOL_NAME(__errno_location)
#endif
#else
0:
.long _GLOBAL_OFFSET_TABLE_
#ifndef _LIBC_REENTRANT
.L3: .long C_SYMBOL_NAME(errno@GOT)
#else
.L3: .long C_SYMBOL_NAME(__errno_location@PLT)
#endif
#endif
END(__syscall_error)
|
