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40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Initialize cpu feature data. PowerPC version.
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Copyright (C) 2017-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdint.h>
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#include <cpu-features.h>
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#if HAVE_TUNABLES
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# include <elf/dl-tunables.h>
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#endif
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static inline void
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init_cpu_features (struct cpu_features *cpu_features)
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{
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/* Default is to use aligned memory access on optimized function unless
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tunables is enable, since for this case user can explicit disable
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unaligned optimizations. */
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#if HAVE_TUNABLES
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int32_t cached_memfunc = TUNABLE_GET (glibc, cpu, cached_memopt, int32_t,
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NULL);
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cpu_features->use_cached_memopt = (cached_memfunc > 0);
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#else
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cpu_features->use_cached_memopt = false;
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#endif
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}
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