1 /* 2 * Copyright 2010 Google, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 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 /* 26 * @test 27 * @bug 6946040 28 * @summary Tests Character/Short.reverseBytes and their intrinsics implementation in the server compiler 29 * @run main/othervm -Xbatch -XX:CompileOnly=.testChar,.testShort TestCharShortByteSwap 30 */ 31 32 // This test must run without any command line arguments. 33 34 public class TestCharShortByteSwap { 35 36 private static short initShort(String[] args, short v) { 37 if (args.length > 0) { 38 try { 39 return (short) Integer.valueOf(args[0]).intValue(); 40 } catch (NumberFormatException e) { } 41 } 42 return v; 43 } 44 45 private static char initChar(String[] args, char v) { 46 if (args.length > 0) { 47 try { 48 return (char) Integer.valueOf(args[0]).intValue(); 49 } catch (NumberFormatException e) { } 50 } 51 return v; 52 } 53 54 private static void testChar(char a, char b) { 55 if (a != Character.reverseBytes(b)) { 56 throw new RuntimeException("FAIL: " + (int)a + " != Character.reverseBytes(" + (int)b + ")"); 57 } 58 if (b != Character.reverseBytes(a)) { 59 throw new RuntimeException("FAIL: " + (int)b + " != Character.reverseBytes(" + (int)a + ")"); 60 } 61 } 62 63 private static void testShort(short a, short b) { 64 if (a != Short.reverseBytes(b)) { 65 throw new RuntimeException("FAIL: " + (int)a + " != Short.reverseBytes(" + (int)b + ")"); 66 } 67 if (b != Short.reverseBytes(a)) { 68 throw new RuntimeException("FAIL: " + (int)b + " != Short.reverseBytes(" + (int)a + ")"); 69 } 70 } 71 72 public static void main(String[] args) { 73 for (int i = 0; i < 100000; ++i) { // Trigger compilation 74 char c1 = initChar(args, (char) 0x0123); 75 char c2 = initChar(args, (char) 0x2301); 76 char c3 = initChar(args, (char) 0xaabb); 77 char c4 = initChar(args, (char) 0xbbaa); 78 short s1 = initShort(args, (short) 0x0123); 79 short s2 = initShort(args, (short) 0x2301); 80 short s3 = initShort(args, (short) 0xaabb); 81 short s4 = initShort(args, (short) 0xbbaa); 82 testChar(c1, c2); 83 testChar(c3, c4); 84 testShort(s1, s2); 85 testShort(s3, s4); 86 } 87 } 88 }