From d69c496886cd57f95a13f4f883eb1a5b73be83ab Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 26 Apr 2025 19:13:59 +0200 Subject: m68k: add fenv support from glibc --- libm/m68k/feenablxcpt.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 libm/m68k/feenablxcpt.c (limited to 'libm/m68k/feenablxcpt.c') diff --git a/libm/m68k/feenablxcpt.c b/libm/m68k/feenablxcpt.c new file mode 100644 index 000000000..9c01dc28b --- /dev/null +++ b/libm/m68k/feenablxcpt.c @@ -0,0 +1,36 @@ +/* Enable 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 + . */ + +#include + +int +feenableexcept (int excepts) +{ + unsigned int new_exc, old_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; +} -- cgit v1.2.3