diff options
Diffstat (limited to 'sysdeps/m68k/m680x0/fpu/math-barriers.h')
| -rw-r--r-- | sysdeps/m68k/m680x0/fpu/math-barriers.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/m68k/m680x0/fpu/math-barriers.h b/sysdeps/m68k/m680x0/fpu/math-barriers.h new file mode 100644 index 0000000000..b1b78d5f11 --- /dev/null +++ b/sysdeps/m68k/m680x0/fpu/math-barriers.h @@ -0,0 +1,37 @@ +/* Control when floating-point expressions are evaluated. M68k version. + Copyright (C) 2011-2018 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/>. */ + +#ifndef M68K_MATH_BARRIERS_H +#define M68K_MATH_BARRIERS_H 1 + +#define math_opt_barrier(x) \ +({ __typeof (x) __x; \ + __asm ("" : "=f" (__x) : "0" (x)); \ + __x; }) +#define math_force_eval(x) \ +do \ + { \ + __typeof (x) __x = (x); \ + if (sizeof (x) <= sizeof (double)) \ + __asm __volatile ("" : : "m" (__x)); \ + else \ + __asm __volatile ("" : : "f" (__x)); \ + } \ +while (0) + +#endif |