[thirdparty/glibc.git] / sysdeps / m68k / fpu / fedisblxcpt.c

/* Disable floating-point exceptions.
   Copyright (C) 2000-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Schwab <schwab@suse.de>, 2000.

   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/>.  */

#include <fenv.h>

int
fedisableexcept (int excepts)
{
  unsigned int old_exc, new_exc;

  /* Get the current control register contents.  */
  __asm__ ("fmove%.l %!,%0" : "=dm" (new_exc));

  old_exc = (new_exc >> 6) & FE_ALL_EXCEPT;

  excepts &= FE_ALL_EXCEPT;

  new_exc &= ~(excepts << 6);
  __asm__ ("fmove%.l %0,%!" : : "dm" (new_exc));

  return old_exc;
}
Commit	Line	Data
f10fa39c	1	/* Disable floating-point exceptions.
04277e02	2	Copyright (C) 2000-2019 Free Software Foundation, Inc.
f10fa39c AS	3	This file is part of the GNU C Library.
	4	Contributed by Andreas Schwab <schwab@suse.de>, 2000.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
3214b89b AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
f10fa39c AS	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3214b89b	14	Lesser General Public License for more details.
f10fa39c	15
3214b89b	16	You should have received a copy of the GNU Lesser General Public
ab84e3ff PE	17	License along with the GNU C Library. If not, see
ab84e3ff PE	18	<http://www.gnu.org/licenses/>. */
f10fa39c AS	19
	20	#include <fenv.h>
	21
	22	int
	23	fedisableexcept (int excepts)
	24	{
	25	unsigned int old_exc, new_exc;
	26
	27	/* Get the current control register contents. */
	28	__asm__ ("fmove%.l %!,%0" : "=dm" (new_exc));
	29
	30	old_exc = (new_exc >> 6) & FE_ALL_EXCEPT;
	31
	32	excepts &= FE_ALL_EXCEPT;
	33
	34	new_exc &= ~(excepts << 6);
	35	__asm__ ("fmove%.l %0,%!" : : "dm" (new_exc));
	36
	37	return old_exc;
	38	}