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);
55 }
|
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);
58 }
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