| 1 | /* Static library error handling code fragment for Nios II. |
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| 2 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public License as |
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| 7 | published by the Free Software Foundation; either version 2.1 of the |
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| 8 | License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <sysdep.h> |
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| 20 | |
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| 21 | /* The following code is only used in the static library. In the shared |
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| 22 | library, the error handling code is at the end of each function. */ |
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| 23 | |
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| 24 | #ifndef PIC |
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| 25 | |
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| 26 | /* In the static library, the syscall stubs jump here when they detect |
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| 27 | an error. */ |
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| 28 | |
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| 29 | # undef CALL_MCOUNT |
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| 30 | # define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2. */ |
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| 31 | |
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| 32 | # if IS_IN (libc) |
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| 33 | # define SYSCALL_ERROR_ERRNO __libc_errno |
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| 34 | # else |
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| 35 | # define SYSCALL_ERROR_ERRNO errno |
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| 36 | # endif |
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| 37 | .text |
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| 38 | ENTRY (__syscall_error) |
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| 39 | nextpc r3 |
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| 40 | 1: |
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| 41 | movhi r8, %hiadj(_gp_got - 1b) |
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| 42 | addi r8, r8, %lo(_gp_got - 1b) |
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| 43 | add r3, r3, r8 |
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| 44 | ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3) |
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| 45 | add r3, r23, r3 |
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| 46 | stw r2, 0(r3) |
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| 47 | movi r2, -1 |
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| 48 | ret |
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| 49 | END (__syscall_error) |
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| 50 | #endif |
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| 51 | |
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