1  /* Support for reading ISA level in /etc/ld.so.cache files written by
       2     Linux ldconfig.  x86 version.
       3     Copyright (C) 2021-2023 Free Software Foundation, Inc.
       4     This file is part of the GNU C Library.
       5  
       6     The GNU C Library is free software; you can redistribute it and/or
       7     modify it under the terms of the GNU Lesser General Public
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the License, or (at your option) any later version.
      10  
      11     The GNU C Library is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14     Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public
      17     License along with the GNU C Library; if not, see
      18     <https://www.gnu.org/licenses/>.  */
      19  
      20  #include <sys/platform/x86.h>
      21  
      22  /* Return true if the ISA level in ENTRY is compatible with CPU.  */
      23  static inline bool
      24  dl_cache_hwcap_isa_level_compatible (struct file_entry_new *entry)
      25  {
      26    const struct cpu_features *cpu_features = __get_cpu_features ();
      27    unsigned int isa_level
      28      = 1 << ((entry->hwcap >> 32) & DL_CACHE_HWCAP_ISA_LEVEL_MASK);
      29  
      30    return (isa_level & cpu_features->isa_1) == isa_level;
      31  }