1  /* Initialize cpu feature data.  PowerPC version.
       2     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       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
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <stdint.h>
      20  #include <cpu-features.h>
      21  #include <elf/dl-tunables.h>
      22  
      23  static inline void
      24  init_cpu_features (struct cpu_features *cpu_features)
      25  {
      26    /* Default is to use aligned memory access on optimized function unless
      27       tunables is enable, since for this case user can explicit disable
      28       unaligned optimizations.  */
      29    int32_t cached_memfunc = TUNABLE_GET (glibc, cpu, cached_memopt, int32_t,
      30  					NULL);
      31    cpu_features->use_cached_memopt = (cached_memfunc > 0);
      32  }