1 files changed, 74 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/fraiseexcpt.c b/sysdeps/m68k/fpu/fraiseexcpt.c
new file mode 100644
index 0000000000..b6ff82760d
--- /dev/null
+++ b/sysdeps/m68k/fpu/fraiseexcpt.c
@@ -0,0 +1,74 @@
+/* Raise given 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>
+#include <math.h>
+
+void
+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.  */
+
+  /* First: invalid exception.  */
+  if (excepts & FE_INVALID)
+    {
+      /* One example of a invalid operation is 0 * Infinity.  */
+      double d = 0.0 * HUGE_VAL;
+      /* Now force the exception.  */
+      __asm__ __volatile__ ("fnop" : : "f" (d));
+    }
+
+  /* Next: division by zero.  */
+  if (excepts & FE_DIVBYZERO)
+    {
+      double d = 1.0;
+      __asm__ __volatile__ ("fdiv%.s %#0r0,%0; fnop" : "=f" (d) : "0" (d));
+    }
+
+  /* Next: overflow.  */
+  if (excepts & FE_OVERFLOW)
+    {
+      long double d = LDBL_MAX * LDBL_MAX;
+      /* Now force the exception.  */
+      __asm__ __volatile__ ("fnop" : : "f" (d));
+    }
+
+  /* Next: underflow.  */
+  if (excepts & FE_UNDERFLOW)
+    {
+      long double d = LDBL_MIN / 16.0;
+      /* Now force the exception.  */
+      __asm__ __volatile__ ("fnop" : : "f" (d));
+    }
+
+  /* Last: inexact.  */
+  if (excepts & FE_INEXACT)
+    {
+      long double d1, d2 = 1.0;
+      __asm__ __volatile__ ("fmovecr %#0,%0\n\t"
+			    "fdiv%.x %1,%0\n\t"
+			    "fnop"
+			    : "=&f" (d1) : "f" (d2));
+    }
+}