sysdeps/x86/dl-procinfo.h

   1 /* x86 version of processor capability information handling macros.
   2    Copyright (C) 2017-2022 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 #ifndef _DL_PROCINFO_H
  20 #define _DL_PROCINFO_H  1
  21 #include <ldsodefs.h>
  22 #include <dl-hwcap.h>
  23
  24 #define _DL_HWCAP_COUNT         HWCAP_COUNT
  25 #define _DL_PLATFORMS_COUNT     HWCAP_PLATFORMS_COUNT
  26
  27 /* Start at 48 to reserve spaces for hardware capabilities.  */
  28 #define _DL_FIRST_PLATFORM      48
  29 /* Mask to filter out platforms.  */
  30 #define _DL_HWCAP_PLATFORM      (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
  31                                  << _DL_FIRST_PLATFORM)
  32
  33 static inline int
  34 __attribute__ ((unused, always_inline))
  35 _dl_string_platform (const char *str)
  36 {
  37   int i;
  38
  39   if (str != NULL)
  40     for (i = HWCAP_PLATFORMS_START; i < HWCAP_PLATFORMS_COUNT; ++i)
  41       {
  42         if (strcmp (str, GLRO(dl_x86_platforms)[i]) == 0)
  43           return _DL_FIRST_PLATFORM + i;
  44       }
  45   return -1;
  46 };
  47
  48 #endif /* dl-procinfo.h */