]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/powerpc/powerpc32/e500/nofpu/feenablxcpt.c
9ac554930f33fede38ed48dc780ff10c7f2b3a20
1 /* Enable floating-point exceptions. e500 version.
2 Copyright (C) 2004-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #include <fenv_libc.h>
21 #include <sys/prctl.h>
24 feenableexcept (int excepts
)
26 unsigned int result
= 0, pflags
, r
;
27 INTERNAL_SYSCALL_DECL (err
);
29 r
= INTERNAL_SYSCALL (prctl
, err
, 2, PR_GET_FPEXC
, &pflags
);
30 if (INTERNAL_SYSCALL_ERROR_P (r
, err
))
33 /* Save old enable bits. */
34 result
= __fexcepts_from_prctl (pflags
);
36 pflags
|= __fexcepts_to_prctl (excepts
);
37 r
= INTERNAL_SYSCALL (prctl
, err
, 2, PR_SET_FPEXC
,
38 pflags
| PR_FP_EXC_SW_ENABLE
);
39 if (INTERNAL_SYSCALL_ERROR_P (r
, err
))
42 /* If enabling signals for "inexact", also enable trapping to the
44 if ((excepts
& FE_INEXACT
) != 0)
48 fpescr
= fegetenv_register ();
49 fpescr
|= SPEFSCR_FINXE
;
50 fesetenv_register (fpescr
);