aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/libgcc/config/epiphany/mulsi3.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.9/libgcc/config/epiphany/mulsi3.c')
-rw-r--r--gcc-4.9/libgcc/config/epiphany/mulsi3.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/epiphany/mulsi3.c b/gcc-4.9/libgcc/config/epiphany/mulsi3.c
new file mode 100644
index 000000000..b8f448611
--- /dev/null
+++ b/gcc-4.9/libgcc/config/epiphany/mulsi3.c
@@ -0,0 +1,39 @@
+/* Generic 32 bit multiply.
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Contributed by Embecosm on behalf of Adapteva, Inc.
+
+This file is part of GCC.
+
+This file 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.
+
+This file 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/>. */
+
+unsigned int
+__mulsi3 (unsigned int a, unsigned int b)
+{
+ unsigned int r = 0;
+
+ while (a)
+ {
+ if (a & 1)
+ r += b;
+ a >>= 1;
+ b <<= 1;
+ }
+ return r;
+}