1 | /* Copyright (C) 2000-2024 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 <tls.h> |
20 | |
21 | /* The following code is only used in the shared library when we |
22 | compile the reentrant version. Otherwise each system call defines |
23 | each own version. */ |
24 | |
25 | /* The syscall stubs jump here when they detect an error. */ |
26 | |
27 | #undef CALL_MCOUNT |
28 | #define CALL_MCOUNT |
29 | |
30 | .text |
31 | ENTRY(__syscall_error) |
32 | #ifndef PIC |
33 | # if IS_IN (libc) |
34 | # define SYSCALL_ERROR_ERRNO __libc_errno |
35 | # else |
36 | # define SYSCALL_ERROR_ERRNO errno |
37 | # endif |
38 | basr %r1,0 |
39 | 0: l %r1,1f-0b(%r1) |
40 | ear %r3,%a0 |
41 | lcr %r2,%r2 |
42 | st %r2,0(%r1,%r3) |
43 | lhi %r2,-1 |
44 | br %r14 |
45 | 1: .long SYSCALL_ERROR_ERRNO@ntpoff |
46 | #else |
47 | # if RTLD_PRIVATE_ERRNO |
48 | basr %r1,0 |
49 | 0: al %r1,1f-0b(%r1) |
50 | lcr %r2,%r2 |
51 | st %r2,0(%r1) |
52 | lhi %r2,-1 |
53 | br %r14 |
54 | 1: .long rtld_errno - 0b |
55 | # else |
56 | # if IS_IN (libc) |
57 | # define SYSCALL_ERROR_ERRNO __libc_errno |
58 | # else |
59 | # define SYSCALL_ERROR_ERRNO errno |
60 | # endif |
61 | basr %r1,0 |
62 | 0: al %r1,1f-0b(%r1) |
63 | ear %r3,%a0 |
64 | l %r1,SYSCALL_ERROR_ERRNO@gotntpoff(%r1) |
65 | lcr %r2,%r2 |
66 | st %r2,0(%r1,%r3) |
67 | lhi %r2,-1 |
68 | br %r14 |
69 | 1: .long _GLOBAL_OFFSET_TABLE_-0b |
70 | # endif |
71 | #endif |
72 | |
73 | END (__syscall_error) |
74 | |