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22dda71b | 1 | /* Install given floating-point control modes. IA64 version. |
04277e02 | 2 | Copyright (C) 2016-2019 Free Software Foundation, Inc. |
22dda71b JM |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
22dda71b JM |
18 | |
19 | #include <fenv.h> | |
20 | ||
21 | #define FPSR_STATUS 0x1f80UL | |
22 | #define FPSR_STATUS_ALL ((FPSR_STATUS << 6) | (FPSR_STATUS << 19) \ | |
23 | | (FPSR_STATUS << 32) | (FPSR_STATUS << 45)) | |
24 | ||
25 | int | |
26 | fesetmode (const femode_t *modep) | |
27 | { | |
28 | femode_t mode; | |
29 | ||
30 | /* As in fesetenv. */ | |
31 | if (((fenv_t) modep >> 62) == 0x03) | |
32 | mode = (femode_t) modep & 0x3fffffffffffffffUL; | |
33 | else | |
34 | mode = *modep; | |
35 | ||
36 | femode_t fpsr; | |
37 | __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); | |
38 | fpsr = (fpsr & FPSR_STATUS_ALL) | (mode & ~FPSR_STATUS_ALL); | |
39 | __asm__ __volatile__ ("mov.m ar.fpsr=%0;;" :: "r" (fpsr)); | |
40 | ||
41 | return 0; | |
42 | } |