--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os_cpu/solaris_sparc/count_trailing_zeros_solaris_sparc.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef OS_CPU_SOLARIS_SPARC_VM_COUNTTRAILINGZEROS_HPP
+#define OS_CPU_SOLARIS_SPARC_VM_COUNTTRAILINGZEROS_HPP
+
+#include "utilities/globalDefinitions.hpp"
+
+inline unsigned count_trailing_zeros(uintx x) {
+  assert(x != 0, "precondition");
+  // Reduce to mask with ones in all positions below the least
+  // significant set bit of x, and zeros otherwise.
+  uintx rx = (x - 1) & ~x;      // sub x, 1, rx; andn rx, x, rx;
+  // Then count the set bits in the reduction.
+  uintx result;
+  __asm__(" popc %1, %0\n\t" : "=r" (result) : "r" (rx));
+  return result;
+}
+
+#endif // include guard