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522e6ee3 | 1 | /* Static library error handling code fragment for Nios II. |
688903eb | 2 | Copyright (C) 2015-2018 Free Software Foundation, Inc. |
522e6ee3 CLT |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public License as | |
7 | published by the Free Software Foundation; either version 2.1 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <sysdep.h> | |
20 | ||
21 | /* The following code is only used in the static library. In the shared | |
22 | library, the error handling code is at the end of each function. */ | |
23 | ||
24 | #ifndef PIC | |
25 | ||
26 | /* In the static library, the syscall stubs jump here when they detect | |
27 | an error. */ | |
28 | ||
29 | # undef CALL_MCOUNT | |
30 | # define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2. */ | |
31 | ||
32 | # if IS_IN (libc) | |
33 | # define SYSCALL_ERROR_ERRNO __libc_errno | |
34 | # else | |
35 | # define SYSCALL_ERROR_ERRNO errno | |
36 | # endif | |
37 | .text | |
38 | ENTRY (__syscall_error) | |
39 | nextpc r3 | |
40 | 1: | |
41 | movhi r8, %hiadj(_gp_got - 1b) | |
42 | addi r8, r8, %lo(_gp_got - 1b) | |
43 | add r3, r3, r8 | |
44 | ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3) | |
45 | add r3, r23, r3 | |
46 | stw r2, 0(r3) | |
47 | movi r2, -1 | |
48 | ret | |
49 | END (__syscall_error) | |
50 | #endif |