/* Install given floating-point environment.

   Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

   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

__fesetenv (const fenv_t *envp)

{

  fenv_t temp;

  /* Install the environment specified by ENVP.  But there are a few

     values which we do not want to come from the saved environment.

     Therefore, we get the current environment and replace the values

     we want to use from the environment specified by the parameter.  */

#ifdef __mcoldfire__

  __asm__ ("fmove%.l %/fpcr,%0" : "=dm" (temp.__control_register));

  __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (temp.__status_register));

  __asm__ ("fmove%.l %/fpiar,%0" : "=dm" (temp.__instruction_address));

#else

  __asm__ ("fmovem%.l %/fpcr/%/fpsr/%/fpiar,%0" : "=m" (*&temp));

#endif

  temp.__status_register &= ~FE_ALL_EXCEPT;

  temp.__control_register &= ~((FE_ALL_EXCEPT << 6) | FE_UPWARD);

  if (envp == FE_DFL_ENV)

    ;

  else if (envp == FE_NOMASK_ENV)

    temp.__control_register |= FE_ALL_EXCEPT << 6;

  else

    {

      temp.__control_register |= (envp->__control_register

				  & ((FE_ALL_EXCEPT << 6) | FE_UPWARD));

      temp.__status_register |= envp->__status_register & FE_ALL_EXCEPT;

    }

#ifdef __mcoldfire__

  __asm__ __volatile__ ("fmove%.l %0,%/fpiar"

			:: "dm" (temp.__instruction_address));

  __asm__ __volatile__ ("fmove%.l %0,%/fpcr"

			:: "dm" (temp.__control_register));

  __asm__ __volatile__ ("fmove%.l %0,%/fpsr"

			:: "dm" (temp.__status_register));

#else

  __asm__ __volatile__ ("fmovem%.l %0,%/fpcr/%/fpsr/%/fpiar" : : "m" (*&temp));

#endif

  /* Success.  */

  return 0;

}

#include <shlib-compat.h>

#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)

strong_alias (__fesetenv, __old_fesetenv)

compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);

#endif

libm_hidden_def (__fesetenv)

libm_hidden_ver (__fesetenv, fesetenv)

versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);