ports/sysdeps/hppa/fpu/fegetenv.c

   1 /* Store current floating-point environment.
   2    Copyright (C) 2000-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by David Huggins-Daines <dhd@debian.org>, 2000
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   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.
  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
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv.h>
  21 #include <string.h>
  22
  23 int
  24 fegetenv (fenv_t *envp)
  25 {
  26   unsigned long long buf[4], *bufptr = buf;
  27
  28   __asm__ (
  29            "fstd,ma %%fr0,8(%1) \n\t"
  30            "fldd -8(%1),%%fr0   \n\t"
  31            : "=m" (buf), "+r" (bufptr) : : "%r0");
  32   memcpy(envp, buf, sizeof (*envp));
  33   return 0;
  34 }
  35 libm_hidden_def (fegetenv)