xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Thread-local data used by error handling for runtime dynamic linker. |
| 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
| 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 |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the 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 | #ifdef _LIBC_REENTRANT |
| 20 | |
| 21 | # include <ldsodefs.h> |
| 22 | # include <tls.h> |
| 23 | |
| 24 | # ifndef SHARED |
| 25 | |
| 26 | /* _dl_error_catch_tsd points to this for the single-threaded case. |
| 27 | It's reset by the thread library for multithreaded programs |
| 28 | if we're not using __thread. */ |
| 29 | void ** __attribute__ ((const)) |
| 30 | _dl_initial_error_catch_tsd (void) |
| 31 | { |
| 32 | static __thread void *data; |
| 33 | return &data; |
| 34 | } |
| 35 | void **(*_dl_error_catch_tsd) (void) __attribute__ ((const)) |
| 36 | = &_dl_initial_error_catch_tsd; |
| 37 | |
| 38 | # else |
| 39 | |
| 40 | /* libpthread sets _dl_error_catch_tsd to point to this function. |
| 41 | We define it here instead of in libpthread so that it doesn't |
| 42 | need to have a TLS segment of its own just for this one pointer. */ |
| 43 | |
| 44 | void ** __attribute__ ((const)) |
| 45 | __libc_dl_error_tsd (void) |
| 46 | { |
| 47 | static __thread void *data attribute_tls_model_ie; |
| 48 | return &data; |
| 49 | } |
| 50 | |
| 51 | # endif /* SHARED */ |
| 52 | |
| 53 | #endif /* _LIBC_REENTRANT */ |