Imported gcc-4.4.3

[msp430-gcc.git] / gcc / config / m32c / m32c-lib2.c

diff --git a/gcc/config/m32c/m32c-lib2.c b/gcc/config/m32c/m32c-lib2.c
new file mode 100644 (file)
index 0000000..1ed6ec5
--- /dev/null
+++ b/gcc/config/m32c/m32c-lib2.c
@@ -0,0 +1,134 @@
+/* libgcc routines for R8C/M16C/M32C
+   Copyright (C) 2005, 2009
+   Free Software Foundation, Inc.
+   Contributed by Red Hat.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3, or (at your
+   option) any later version.
+
+   GCC 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 General Public
+   License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+typedef          int  HItype __attribute__ ((mode (HI)));
+typedef unsigned int UHItype __attribute__ ((mode (HI)));
+typedef          int  SItype __attribute__ ((mode (SI)));
+typedef unsigned int USItype __attribute__ ((mode (SI)));
+
+typedef int word_type __attribute__ ((mode (__word__)));
+
+USItype udivmodsi4 (USItype num, USItype den, word_type modwanted);
+SItype __divsi3 (SItype a, SItype b);
+SItype __modsi3 (SItype a, SItype b);
+SItype __udivsi3 (SItype a, SItype b);
+SItype __umodsi3 (SItype a, SItype b);
+
+USItype
+udivmodsi4 (USItype num, USItype den, word_type modwanted)
+{
+  USItype bit = 1;
+  USItype res = 0;
+
+  while (den < num && bit && !(den & (1L << 31)))
+    {
+      den <<= 1;
+      bit <<= 1;
+    }
+  while (bit)
+    {
+      if (num >= den)
+       {
+         num -= den;
+         res |= bit;
+       }
+      bit >>= 1;
+      den >>= 1;
+    }
+  if (modwanted)
+    return num;
+  return res;
+}
+
+
+
+SItype
+__divsi3 (SItype a, SItype b)
+{
+  word_type neg = 0;
+  SItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = !neg;
+    }
+
+  if (b < 0)
+    {
+      b = -b;
+      neg = !neg;
+    }
+
+  res = udivmodsi4 (a, b, 0);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+
+SItype
+__modsi3 (SItype a, SItype b)
+{
+  word_type neg = 0;
+  SItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = 1;
+    }
+
+  if (b < 0)
+    b = -b;
+
+  res = udivmodsi4 (a, b, 1);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+
+
+SItype
+__udivsi3 (SItype a, SItype b)
+{
+  return udivmodsi4 (a, b, 0);
+}
+
+
+
+SItype
+__umodsi3 (SItype a, SItype b)
+{
+  return udivmodsi4 (a, b, 1);
+}