[thirdparty/glibc.git] / sysdeps / x86 / init-arch.h

/* This file is part of the GNU C Library.
   Copyright (C) 2008-2016 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
   <http://www.gnu.org/licenses/>.  */

#ifdef  __ASSEMBLER__
# include <cpu-features.h>
#else
# include <ldsodefs.h>
#endif

#ifndef __x86_64__
/* Due to the reordering and the other nifty extensions in i686, it is
   not really good to use heavily i586 optimized code on an i686.  It's
   better to use i486 code if it isn't an i586.  */
# if MINIMUM_ISA == 686
#  define USE_I586 0
#  define USE_I686 1
# else
#  define USE_I586 (HAS_ARCH_FEATURE (I586) && !HAS_ARCH_FEATURE (I686))
#  define USE_I686 HAS_ARCH_FEATURE (I686)
# endif
#endif
Commit	Line	Data
425ce2ed	1	/* This file is part of the GNU C Library.
f7a9f785	2	Copyright (C) 2008-2016 Free Software Foundation, Inc.
425ce2ed UD	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
59ba27a6 PE	15	License along with the GNU C Library; if not, see
59ba27a6 PE	16	<http://www.gnu.org/licenses/>. */
425ce2ed	17
e2e4f560 L	18	#ifdef __ASSEMBLER__
	19	# include <cpu-features.h>
	20	#else
	21	# include <ldsodefs.h>
	22	#endif
75dd0a8f L	23
	24	#ifndef __x86_64__
	25	/* Due to the reordering and the other nifty extensions in i686, it is
	26	not really good to use heavily i586 optimized code on an i686. It's
	27	better to use i486 code if it isn't an i586. */
	28	# if MINIMUM_ISA == 686
	29	# define USE_I586 0
	30	# define USE_I686 1
	31	# else
	32	# define USE_I586 (HAS_ARCH_FEATURE (I586) && !HAS_ARCH_FEATURE (I686))
	33	# define USE_I686 HAS_ARCH_FEATURE (I686)
	34	# endif
	35	#endif