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-rw-r--r--sysdeps/m68k/fpu/feholdexcpt.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/feholdexcpt.c b/sysdeps/m68k/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..351fa8ae75
--- /dev/null
+++ b/sysdeps/m68k/fpu/feholdexcpt.c
@@ -0,0 +1,39 @@
+/* Store current floating-point environment and clear exceptions.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <fenv.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+  fexcept_t fpcr, fpsr;
+
+  /* Store the environment.  */
+  __asm__ ("fmovem%.l %/fpcr/%/fpsr,%0" : "=m" (*envp));
+
+  /* Now clear all exceptions.  */
+  fpsr = envp->status_register & ~FE_ALL_EXCEPT;
+  __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+  /* And set all exceptions to non-stop.  */
+  fpcr = envp->control_register & ~(FE_ALL_EXCEPT << 5);
+  __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
+
+  return 1;
+}