projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 2001-2014 Free Software Foundation, Inc. |
| d5efd131 MF |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. | |
| 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 | |
| 75efb018 MF |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| d5efd131 MF |
18 | |
| 19 | #include <ucontext.h> | |
| 20 | ||
| 21 | struct rv | |
| 22 | { | |
| 23 | long retval; | |
| 24 | long first_return; | |
| 25 | }; | |
| 26 | ||
| 27 | extern struct rv __getcontext (ucontext_t *__ucp) __THROW; | |
| 293432b4 | 28 | extern int __setcontext (const ucontext_t *__ucp) __THROW; |
| d5efd131 MF |
29 | |
| 30 | int | |
| 31 | __swapcontext (ucontext_t *oucp, const ucontext_t *ucp) | |
| 32 | { | |
| 33 | struct rv rv = __getcontext (oucp); | |
| 34 | if (rv.first_return) | |
| 35 | __setcontext (ucp); | |
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| 39 | weak_alias (__swapcontext, swapcontext) |