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b677236a | 1 | /* |
a945c346 | 2 | * Copyright (C) 2014-2024 Free Software Foundation, Inc. |
b677236a MS |
3 | * |
4 | * This file is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 3, or (at your option) any | |
7 | * later version. | |
8 | * | |
9 | * This file is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * Under Section 7 of GPL version 3, you are granted additional | |
15 | * permissions described in the GCC Runtime Library Exception, version | |
16 | * 3.1, as published by the Free Software Foundation. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License and | |
19 | * a copy of the GCC Runtime Library Exception along with this program; | |
20 | * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
21 | * <http://www.gnu.org/licenses/>. | |
22 | */ | |
23 | ||
24 | #define _FPU_FPCR_FZ 0x1000000 | |
25 | ||
26 | #define _FPU_SETCW(fpcr) \ | |
27 | { \ | |
28 | __asm__ __volatile__ ("msr fpcr, %0" : : "r" (fpcr)); \ | |
29 | } | |
30 | ||
31 | static void __attribute__((constructor)) | |
32 | set_fast_math (void) | |
33 | { | |
34 | /* Flush to zero, round to nearest, IEEE exceptions disabled. */ | |
35 | _FPU_SETCW (_FPU_FPCR_FZ); | |
36 | } |