9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6653795
  27  * @summary C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems
  28  * @modules java.base/jdk.internal.misc
  29  * @run main UnsafeGetAddressTest
  30  *

  31  */
  32 


  33 import jdk.internal.misc.Unsafe;
  34 import java.lang.reflect.*;

  35 
  36 public class UnsafeGetAddressTest {
  37     private static Unsafe unsafe;
  38 
  39     public static void main(String[] args) throws Exception {
  40         Class c = UnsafeGetAddressTest.class.getClassLoader().loadClass("jdk.internal.misc.Unsafe");
  41         Field f = c.getDeclaredField("theUnsafe");
  42         f.setAccessible(true);
  43         unsafe = (Unsafe)f.get(c);
  44 
  45         long address = unsafe.allocateMemory(unsafe.addressSize());
  46         unsafe.putAddress(address, 0x0000000080000000L);
  47         // from jdk.internal.misc.Unsafe.getAddress' documentation:
  48         // "If the native pointer is less than 64 bits wide, it is
  49         // extended as an unsigned number to a Java long."
  50         result = unsafe.getAddress(address);
  51         System.out.printf("1: was 0x%x, expected 0x%x\n", result,
  52                 0x0000000080000000L);
  53         for (int i = 0; i < 1000000; i++) {
  54             result = unsafe.getAddress(address);

   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6653795
  27  * @summary C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems
  28  * @modules java.base/jdk.internal.misc

  29  *
  30  * @run main compiler.intrinsics.unsafe.UnsafeGetAddressTest
  31  */
  32 
  33 package compiler.intrinsics.unsafe;
  34 
  35 import jdk.internal.misc.Unsafe;
  36 
  37 import java.lang.reflect.Field;
  38 
  39 public class UnsafeGetAddressTest {
  40     private static Unsafe unsafe;
  41 
  42     public static void main(String[] args) throws Exception {
  43         Class c = UnsafeGetAddressTest.class.getClassLoader().loadClass("jdk.internal.misc.Unsafe");
  44         Field f = c.getDeclaredField("theUnsafe");
  45         f.setAccessible(true);
  46         unsafe = (Unsafe)f.get(c);
  47 
  48         long address = unsafe.allocateMemory(unsafe.addressSize());
  49         unsafe.putAddress(address, 0x0000000080000000L);
  50         // from jdk.internal.misc.Unsafe.getAddress' documentation:
  51         // "If the native pointer is less than 64 bits wide, it is
  52         // extended as an unsigned number to a Java long."
  53         result = unsafe.getAddress(address);
  54         System.out.printf("1: was 0x%x, expected 0x%x\n", result,
  55                 0x0000000080000000L);
  56         for (int i = 0; i < 1000000; i++) {
  57             result = unsafe.getAddress(address);