1396
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1 /*
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2 * Copyright 2010 Google, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 /*
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26 * @test
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27 * @bug 6946040
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28 * @summary Tests Character/Short.reverseBytes and their intrinsics implementation in the server compiler
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29 * @run main/othervm -Xbatch -server -XX:CompileOnly=.testChar,.testShort TestCharShortByteSwap
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30 */
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31
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32 // This test must run without any command line arguments.
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33
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34 public class TestCharShortByteSwap {
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35
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36 private static short initShort(String[] args, short v) {
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37 if (args.length > 0) {
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38 try {
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39 return (short) Integer.valueOf(args[0]).intValue();
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40 } catch (NumberFormatException e) { }
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41 }
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42 return v;
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43 }
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44
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45 private static char initChar(String[] args, char v) {
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46 if (args.length > 0) {
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47 try {
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48 return (char) Integer.valueOf(args[0]).intValue();
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49 } catch (NumberFormatException e) { }
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50 }
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51 return v;
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52 }
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53
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54 private static void testChar(char a, char b) {
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55 if (a != Character.reverseBytes(b)) {
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56 throw new RuntimeException("FAIL: " + (int)a + " != Character.reverseBytes(" + (int)b + ")");
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57 }
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58 if (b != Character.reverseBytes(a)) {
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59 throw new RuntimeException("FAIL: " + (int)b + " != Character.reverseBytes(" + (int)a + ")");
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60 }
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61 }
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62
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63 private static void testShort(short a, short b) {
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64 if (a != Short.reverseBytes(b)) {
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65 throw new RuntimeException("FAIL: " + (int)a + " != Short.reverseBytes(" + (int)b + ")");
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66 }
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67 if (b != Short.reverseBytes(a)) {
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68 throw new RuntimeException("FAIL: " + (int)b + " != Short.reverseBytes(" + (int)a + ")");
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69 }
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70 }
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71
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72 public static void main(String[] args) {
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73 for (int i = 0; i < 100000; ++i) { // Trigger compilation
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74 char c1 = initChar(args, (char) 0x0123);
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75 char c2 = initChar(args, (char) 0x2301);
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76 char c3 = initChar(args, (char) 0xaabb);
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77 char c4 = initChar(args, (char) 0xbbaa);
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78 short s1 = initShort(args, (short) 0x0123);
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79 short s2 = initShort(args, (short) 0x2301);
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80 short s3 = initShort(args, (short) 0xaabb);
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81 short s4 = initShort(args, (short) 0xbbaa);
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82 testChar(c1, c2);
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83 testChar(c3, c4);
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84 testShort(s1, s2);
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85 testShort(s3, s4);
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86 }
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87 }
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88 }
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