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Diffstat (limited to 'ports/sysdeps/m68k/fpu/feenablxcpt.c')
-rw-r--r--ports/sysdeps/m68k/fpu/feenablxcpt.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/ports/sysdeps/m68k/fpu/feenablxcpt.c b/ports/sysdeps/m68k/fpu/feenablxcpt.c
new file mode 100644
index 0000000000..e18c79e74b
--- /dev/null
+++ b/ports/sysdeps/m68k/fpu/feenablxcpt.c
@@ -0,0 +1,38 @@
+/* Enable floating-point exceptions.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@suse.de>, 2000.
+
+ 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>
+
+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;
+}