| 1 | /* Store current floating-point environment. |
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| 2 | Copyright (C) 2000-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library. If not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <fenv.h> |
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| 20 | #include <string.h> |
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| 21 | |
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| 22 | int |
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| 23 | __fegetenv (fenv_t *envp) |
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| 24 | { |
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| 25 | unsigned long long buf[4], *bufptr = buf; |
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| 26 | |
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| 27 | __asm__ ( |
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| 28 | "fstd,ma %%fr0,8(%1) \n\t" |
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| 29 | "fldd -8(%1),%%fr0 \n\t" |
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| 30 | : "=m" (buf), "+r" (bufptr) : : "%r0" ); |
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| 31 | memcpy(dest: envp, src: buf, n: sizeof (*envp)); |
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| 32 | return 0; |
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| 33 | } |
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| 34 | libm_hidden_def (__fegetenv) |
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| 35 | weak_alias (__fegetenv, fegetenv) |
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| 36 | libm_hidden_weak (fegetenv) |
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| 37 | |
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