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91a1f3fe JM |
1 | /* Install given floating-point environment and raise exceptions for |
2 | atomic compound assignment. | |
688903eb | 3 | Copyright (C) 2013-2018 Free Software Foundation, Inc. |
91a1f3fe JM |
4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library. If not, see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "soft-fp.h" | |
21 | #include "soft-supp.h" | |
22 | #include <signal.h> | |
23 | ||
24 | void | |
25 | __atomic_feupdateenv (const fenv_t *envp) | |
26 | { | |
27 | fenv_union_t u; | |
28 | int saved_exceptions = __sim_exceptions_thread; | |
29 | ||
30 | /* This function postdates the global variables being turned into | |
31 | compat symbols, so no need to set them. */ | |
32 | u.fenv = *envp; | |
33 | __sim_exceptions_thread |= u.l[0]; | |
34 | __sim_disabled_exceptions_thread = u.l[1]; | |
35 | if (saved_exceptions & ~__sim_disabled_exceptions_thread) | |
36 | raise (SIGFPE); | |
37 | } |