sysdeps/x86/dl-procruntime.c

   1 /* Data for processor runtime information.  x86 version.
   2    Copyright (C) 2018-2023 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 /* This information must be kept in sync with the _DL_HWCAP_COUNT,
  20    HWCAP_PLATFORMS_START and HWCAP_PLATFORMS_COUNT definitions in
  21    dl-hwcap.h.
  22
  23    If anything should be added here check whether the size of each string
  24    is still ok with the given array size.
  25
  26    All the #ifdefs in the definitions are quite irritating but
  27    necessary if we want to avoid duplicating the information.  There
  28    are three different modes:
  29
  30    - PROCINFO_DECL is defined.  This means we are only interested in
  31      declarations.
  32
  33    - PROCINFO_DECL is not defined:
  34
  35      + if SHARED is defined the file is included in an array
  36        initializer.  The .element = { ... } syntax is needed.
  37
  38      + if SHARED is not defined a normal array initialization is
  39        needed.
  40   */
  41
  42 #ifndef PROCINFO_CLASS
  43 # define PROCINFO_CLASS
  44 #endif
  45
  46 #if !IS_IN (ldconfig)
  47 # if !defined PROCINFO_DECL && defined SHARED
  48   ._dl_x86_feature_1
  49 # else
  50 PROCINFO_CLASS unsigned int _dl_x86_feature_1
  51 # endif
  52 # ifndef PROCINFO_DECL
  53 = 0
  54 # endif
  55 # if !defined SHARED || defined PROCINFO_DECL
  56 ;
  57 # else
  58 ,
  59 # endif
  60
  61 # if !defined PROCINFO_DECL && defined SHARED
  62   ._dl_x86_feature_control
  63 # else
  64 PROCINFO_CLASS struct dl_x86_feature_control _dl_x86_feature_control
  65 # endif
  66 # ifndef PROCINFO_DECL
  67 = {
  68     .ibt = DEFAULT_DL_X86_CET_CONTROL,
  69     .shstk = DEFAULT_DL_X86_CET_CONTROL,
  70   }
  71 # endif
  72 # if !defined SHARED || defined PROCINFO_DECL
  73 ;
  74 # else
  75 ,
  76 # endif
  77 #endif