sysdeps/x86/dl-minsigstacksize.h

   1 /* Emulate AT_MINSIGSTKSZ.  Generic x86 version.
   2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 /* Emulate AT_MINSIGSTKSZ with XSAVE. */
  19
  20 static inline void
  21 dl_check_minsigstacksize (const struct cpu_features *cpu_features)
  22 {
  23   /* NB: Default to a constant MINSIGSTKSZ.  */
  24   _Static_assert (__builtin_constant_p (MINSIGSTKSZ),
  25                   "MINSIGSTKSZ is constant");
  26   GLRO(dl_minsigstacksize) = MINSIGSTKSZ;
  27 }