| 1 | /* Initialize cpu feature data. PowerPC version. |
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| 2 | Copyright (C) 2017-2022 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 <stdint.h> |
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| 20 | #include <cpu-features.h> |
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| 21 | |
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| 22 | #if HAVE_TUNABLES |
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| 23 | # include <elf/dl-tunables.h> |
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| 24 | #endif |
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| 25 | |
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| 26 | static inline void |
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| 27 | init_cpu_features (struct cpu_features *cpu_features) |
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| 28 | { |
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| 29 | /* Default is to use aligned memory access on optimized function unless |
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| 30 | tunables is enable, since for this case user can explicit disable |
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| 31 | unaligned optimizations. */ |
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| 32 | #if HAVE_TUNABLES |
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| 33 | int32_t cached_memfunc = TUNABLE_GET (glibc, cpu, cached_memopt, int32_t, |
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| 34 | NULL); |
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| 35 | cpu_features->use_cached_memopt = (cached_memfunc > 0); |
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| 36 | #else |
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| 37 | cpu_features->use_cached_memopt = false; |
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| 38 | #endif |
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| 39 | } |
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| 40 | |
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