diff options
Diffstat (limited to 'ports/sysdeps/m68k/coldfire/fpu/fraiseexcpt.c')
-rw-r--r-- | ports/sysdeps/m68k/coldfire/fpu/fraiseexcpt.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/ports/sysdeps/m68k/coldfire/fpu/fraiseexcpt.c b/ports/sysdeps/m68k/coldfire/fpu/fraiseexcpt.c deleted file mode 100644 index 3d75deb6ac..0000000000 --- a/ports/sysdeps/m68k/coldfire/fpu/fraiseexcpt.c +++ /dev/null @@ -1,66 +0,0 @@ -/* Raise given exceptions. - Copyright (C) 2006-2014 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.h> -#include <float.h> -#include <math.h> - -int -feraiseexcept (int excepts) -{ - /* Raise exceptions represented by EXCEPTS. But we must raise only one - signal at a time. It is important that if the overflow/underflow - exception and the divide by zero exception are given at the same - time, the overflow/underflow exception follows the divide by zero - exception. - - The Coldfire FPU allows an exception to be raised by asserting - the associated EXC bit and then executing an arbitrary arithmetic - instruction. fmove.l is classified as an arithmetic instruction - and suffices for this purpose. - - We therefore raise an exception by setting both the EXC and AEXC - bit associated with the exception (the former being 6 bits to the - left of the latter) and then loading the longword at (%sp) into an - FP register. */ - - inline void - raise_one_exception (int mask) - { - if (excepts & mask) - { - int fpsr; - double unused; - - asm volatile ("fmove%.l %/fpsr,%0" : "=d" (fpsr)); - fpsr |= (mask << 6) | mask; - asm volatile ("fmove%.l %0,%/fpsr" :: "d" (fpsr)); - asm volatile ("fmove%.l (%%sp),%0" : "=f" (unused)); - } - } - - raise_one_exception (FE_INVALID); - raise_one_exception (FE_DIVBYZERO); - raise_one_exception (FE_OVERFLOW); - raise_one_exception (FE_UNDERFLOW); - raise_one_exception (FE_INEXACT); - - /* Success. */ - return 0; -} -libm_hidden_def (feraiseexcept) |