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author | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:42:19 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:42:19 +0000 |
commit | 297c592e2e31cf33f1a99c4efca5e3c2421e8aaf (patch) | |
tree | 989d58a6a39c220ef7d5311d701f4bcf30ffd43e /sysdeps/alpha/fpu/fegetmode.c | |
parent | 1396c647a9391c067fdeb6aa78c1c1f4ddc513bd (diff) | |
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Add femode_t functions: alpha.
This patch adds Alpha versions of fegetmode and fesetmode. Untested.
* sysdeps/alpha/fpu/fegetmode.c: New file.
* sysdeps/alpha/fpu/fesetmode.c: Likewise.
Diffstat (limited to 'sysdeps/alpha/fpu/fegetmode.c')
-rw-r--r-- | sysdeps/alpha/fpu/fegetmode.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/fegetmode.c b/sysdeps/alpha/fpu/fegetmode.c new file mode 100644 index 0000000000..f3a6edee96 --- /dev/null +++ b/sysdeps/alpha/fpu/fegetmode.c @@ -0,0 +1,33 @@ +/* Store current floating-point control modes. Alpha version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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_libc.h> + +int +fegetmode (femode_t *modep) +{ + unsigned long int fpcr; + unsigned long int swcr; + + /* As in fegetenv. */ + swcr = __ieee_get_fp_control (); + __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr)); + *modep = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK)); + + return 0; +} |