diff options
Diffstat (limited to 'libm/m68k/fedisblxcpt.c')
-rw-r--r-- | libm/m68k/fedisblxcpt.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libm/m68k/fedisblxcpt.c b/libm/m68k/fedisblxcpt.c new file mode 100644 index 000000000..c2c593e38 --- /dev/null +++ b/libm/m68k/fedisblxcpt.c @@ -0,0 +1,36 @@ +/* Disable floating-point exceptions. + Copyright (C) 2000-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#include <fenv.h> + +int +fedisableexcept (int excepts) +{ + unsigned int old_exc, new_exc; + + /* Get the current control register contents. */ + __asm__ ("fmove%.l %!,%0" : "=dm" (new_exc)); + + old_exc = (new_exc >> 6) & FE_ALL_EXCEPT; + + excepts &= FE_ALL_EXCEPT; + + new_exc &= ~(excepts << 6); + __asm__ ("fmove%.l %0,%!" : : "dm" (new_exc)); + + return old_exc; +} |