diff options
Diffstat (limited to 'sysdeps/arm/fedisblxcpt.c')
-rw-r--r-- | sysdeps/arm/fedisblxcpt.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/arm/fedisblxcpt.c b/sysdeps/arm/fedisblxcpt.c new file mode 100644 index 0000000000..88da539439 --- /dev/null +++ b/sysdeps/arm/fedisblxcpt.c @@ -0,0 +1,47 @@ +/* Disable floating-point exceptions. + Copyright (C) 2001-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Philip Blundell <philb@gnu.org>, 2001. + + 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> +#include <fpu_control.h> +#include <arm-features.h> + + +int +fedisableexcept (int excepts) +{ + if (ARM_HAVE_VFP) + { + unsigned long int new_exc, old_exc; + + _FPU_GETCW(new_exc); + + old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; + + excepts &= FE_ALL_EXCEPT; + + new_exc &= ~(excepts << FE_EXCEPT_SHIFT); + + _FPU_SETCW(new_exc); + + return old_exc; + } + + /* Unsupported, so return -1 for failure. */ + return -1; +} |