1 | /* Copyright (C) 1999-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <sysdep.h> |
19 | #include <errno.h> |
20 | |
21 | ENTRY(__syscall_error) |
22 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
23 | /* We translate the system's EWOULDBLOCK error into EAGAIN. |
24 | The GNU C library always defines EWOULDBLOCK==EAGAIN. |
25 | EWOULDBLOCK_sys is the original number. */ |
26 | mov.l .L1, r1 |
27 | cmp/eq r1, r0 |
28 | bf skip |
29 | nop |
30 | mov.l .L2, r0 |
31 | skip: |
32 | #endif |
33 | /* Store it in errno... */ |
34 | #ifndef SHARED |
35 | #ifndef _LIBC_REENTRANT |
36 | mov.l .L3, r1 |
37 | mov.l r0, @r1 |
38 | #else |
39 | mov.l .L3, r1 |
40 | sts.l pr, @-r15 |
41 | cfi_adjust_cfa_offset (4) |
42 | cfi_rel_offset (pr, 0) |
43 | mov.l r0, @-r15 |
44 | cfi_adjust_cfa_offset (4) |
45 | jsr @r1 |
46 | nop |
47 | mov.l @r15+, r1 |
48 | cfi_adjust_cfa_offset (-4) |
49 | lds.l @r15+, pr |
50 | cfi_adjust_cfa_offset (-4) |
51 | cfi_restore (pr) |
52 | mov.l r1, @r0 |
53 | #endif |
54 | #else |
55 | mov.l r12, @-r15 |
56 | cfi_adjust_cfa_offset (4) |
57 | cfi_rel_offset (r12, 0) |
58 | #ifndef _LIBC_REENTRANT |
59 | mov r0, r2 |
60 | mov.l 0f, r12 |
61 | mova 0f, r0 |
62 | add r0, r12 |
63 | mov.l .L3, r0 |
64 | mov.l @(r0,r12), r1 |
65 | mov.l r2, @r1 |
66 | #else |
67 | mov.l r0, @-r15 |
68 | cfi_adjust_cfa_offset (4) |
69 | sts.l pr, @-r15 |
70 | cfi_adjust_cfa_offset (4) |
71 | cfi_rel_offset (pr, 0) |
72 | mov.l 0f, r12 |
73 | mova 0f, r0 |
74 | add r0, r12 |
75 | mov.l .L3, r1 |
76 | mova .L3, r0 |
77 | add r0, r1 |
78 | jsr @r1 |
79 | nop |
80 | lds.l @r15+, pr |
81 | cfi_adjust_cfa_offset (-4) |
82 | cfi_restore (pr) |
83 | mov.l @r15+, r1 |
84 | cfi_adjust_cfa_offset (-4) |
85 | mov.l r1, @r0 |
86 | #endif |
87 | mov.l @r15+, r12 |
88 | cfi_adjust_cfa_offset (-4) |
89 | cfi_restore (r12) |
90 | #endif |
91 | /* And just kick back a -1. */ |
92 | rts |
93 | mov #-1, r0 |
94 | |
95 | .align 2 |
96 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
97 | .L1: .long EWOULDBLOCK_sys |
98 | .L2: .long EAGAIN |
99 | #endif |
100 | #ifndef SHARED |
101 | #ifndef _LIBC_REENTRANT |
102 | .L3: .long C_SYMBOL_NAME(errno) |
103 | #else |
104 | .L3: .long C_SYMBOL_NAME(__errno_location) |
105 | #endif |
106 | #else |
107 | 0: |
108 | .long _GLOBAL_OFFSET_TABLE_ |
109 | #ifndef _LIBC_REENTRANT |
110 | .L3: .long C_SYMBOL_NAME(errno@GOT) |
111 | #else |
112 | .L3: .long C_SYMBOL_NAME(__errno_location@PLT) |
113 | #endif |
114 | #endif |
115 | END(__syscall_error) |
116 | |