sysdeps/powerpc/powerpc32/e500/nofpu/fegetenv.c

   1 /* Store current floating-point environment.  e500 version.
   2    Copyright (C) 2004-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv_libc.h>
  20 #include <sysdep.h>
  21 #include <sys/prctl.h>
  22
  23 int
  24 __fegetenv (fenv_t *envp)
  25 {
  26   fenv_union_t u;
  27   INTERNAL_SYSCALL_DECL (err);
  28   int r;
  29
  30   r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]);
  31   if (INTERNAL_SYSCALL_ERROR_P (r, err))
  32     return -1;
  33
  34   u.l[1] = fegetenv_register ();
  35   *envp = u.fenv;
  36
  37   /* Success.  */
  38   return 0;
  39 }
  40
  41 #include <shlib-compat.h>
  42 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  43 strong_alias (__fegetenv, __old_fegetenv)
  44 compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1);
  45 #endif
  46
  47 versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);