[thirdparty/glibc.git] / sysdeps / x86 / dl-minsigstacksize.h

/* Emulate AT_MINSIGSTKSZ.  Generic x86 version.
   Copyright (C) 2020-2023 Free Software Foundation, Inc.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* Emulate AT_MINSIGSTKSZ with XSAVE. */

static inline void
dl_check_minsigstacksize (const struct cpu_features *cpu_features)
{
  /* NB: Default to a constant MINSIGSTKSZ.  */
  _Static_assert (__builtin_constant_p (MINSIGSTKSZ),
		  "MINSIGSTKSZ is constant");
  GLRO(dl_minsigstacksize) = MINSIGSTKSZ;
}
Commit	Line	Data
6c57d320	1	/* Emulate AT_MINSIGSTKSZ. Generic x86 version.
6d7e8eda	2	Copyright (C) 2020-2023 Free Software Foundation, Inc.
6c57d320 L	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	}