Imported gcc-4.4.3

[msp430-gcc.git] / gcc / config / frv / cmovh.c

diff --git a/gcc/config/frv/cmovh.c b/gcc/config/frv/cmovh.c
new file mode 100644 (file)
index 0000000..6b0901d
--- /dev/null
+++ b/gcc/config/frv/cmovh.c
@@ -0,0 +1,47 @@
+/* Move half-word library function.
+   Copyright (C) 2000, 2003, 2009 Free Software Foundation, Inc.
+   Contributed by Red Hat, Inc.
+  
+   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/>.  */
+
+void
+__cmovh (short *dest, const short *src, unsigned len)
+{
+  unsigned i;
+  unsigned num = len >> 1;
+  char *dest_byte = (char *)dest;
+  const char *src_byte = (const char *)src;
+
+  if (dest_byte < src_byte || dest_byte > src_byte+len)
+    {
+      for (i = 0; i < num; i++)
+       dest[i] = src[i];
+
+      if ((len & 1) != 0)
+       dest_byte[len-1] = src_byte[len-1];
+    }
+  else
+    {
+      while (len-- > 0)
+       dest_byte[len] = src_byte[len];
+    }
+}