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Diffstat (limited to 'sysdeps/powerpc/cpu-features.c')
| -rw-r--r-- | sysdeps/powerpc/cpu-features.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/powerpc/cpu-features.c b/sysdeps/powerpc/cpu-features.c new file mode 100644 index 0000000000..fd9debceab --- /dev/null +++ b/sysdeps/powerpc/cpu-features.c @@ -0,0 +1,39 @@ +/* Initialize cpu feature data. PowerPC version. + this file is part of the gnu c library. + copyright (c) 2017 free software foundation, inc. + + the gnu c library is free software; you can redistribute it and/or + modify it under the terms of the gnu lesser general public + license as published by the free software foundation; either + version 2.1 of the license, or (at your option) any later version. + + the gnu c library is distributed in the hope that it will be useful, + but without any warranty; without even the implied warranty of + merchantability or fitness for a particular purpose. see the gnu + lesser general public license for more details. + + you should have received a copy of the gnu lesser general public + license along with the gnu c library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdint.h> +#include <cpu-features.h> + +#if HAVE_TUNABLES +# include <elf/dl-tunables.h> +#endif + +static inline void +init_cpu_features (struct cpu_features *cpu_features) +{ + /* Default is to use aligned memory access on optimized function unless + tunables is enable, since for this case user can explicit disable + unaligned optimizations. */ +#if HAVE_TUNABLES + int32_t aligned_memfunc = TUNABLE_GET (glibc, tune, aligned_memopt, int32_t, + NULL); + cpu_features->use_aligned_memopt = (aligned_memfunc > 0); +#else + cpu_features->use_aligned_memopt = true; +#endif +} |