1 /*

     2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. 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 package jdk.vm.ci.code.test;

    24 

    25 import jdk.vm.ci.code.BytecodeFrame;

    26 import jdk.vm.ci.code.DebugInfo;

    27 import jdk.vm.ci.code.Location;

    28 import jdk.vm.ci.code.RegisterValue;

    29 import jdk.vm.ci.code.StackSlot;

    30 import jdk.vm.ci.code.VirtualObject;

    31 import jdk.vm.ci.hotspot.HotSpotReferenceMap;

    32 import jdk.vm.ci.meta.JavaKind;

    33 import jdk.vm.ci.meta.JavaValue;

    34 import jdk.vm.ci.meta.ResolvedJavaMethod;

    35 

    36 import java.lang.reflect.Method;

    37 import java.util.ArrayList;

    38 import java.util.Arrays;

    39 import java.util.List;

    40 

    41 /**

    42  * Test code installation with debug information.

    43  */

    44 public class DebugInfoTest extends CodeInstallationTest {

    45 

    46     protected interface DebugInfoCompiler {

    47 

    48         VirtualObject[] compile(TestAssembler asm, JavaValue[] frameValues);

    49     }

    50 

    51     protected void test(DebugInfoCompiler compiler, Method method, int bci, JavaKind... slotKinds) {

    52         test(compiler, method, bci, new Location[0], new Location[0], new int[0], slotKinds);

    53     }

    54 

    55     protected void test(DebugInfoCompiler compiler, Method method, int bci, Location[] objects, Location[] derivedBase, int[] sizeInBytes, JavaKind... slotKinds) {

    56         ResolvedJavaMethod resolvedMethod = metaAccess.lookupJavaMethod(method);

    57 

    58         int numLocals = resolvedMethod.getMaxLocals();

    59         int numStack = slotKinds.length - numLocals;

    60         JavaValue[] values = new JavaValue[slotKinds.length];

    61         test(asm -> {

    62             /*

    63              * Ensure that any objects mentioned in the VirtualObjects are also in the OopMap.

    64              */

    65             List<Location> newLocations = new ArrayList<Location>(Arrays.asList(objects));

    66             List<Location> newDerived = new ArrayList<Location>(Arrays.asList(derivedBase));

    67             int[] newSizeInBytes = sizeInBytes;

    68             VirtualObject[] vobjs = compiler.compile(asm, values);

    69             if (vobjs != null) {

    70                 for (VirtualObject obj : vobjs) {

    71                     JavaValue[] objValues = obj.getValues();

    72                     for (int i = 0; i < objValues.length; i++) {

    73                             if (obj.getSlotKind(i) == JavaKind.Object) {

    74                                     Location oopLocation = null;

    75                                     int bytes = -1;

    76                                     if (objValues[i] instanceof RegisterValue) {

    77                                             RegisterValue reg = (RegisterValue) objValues[i];

    78                                             oopLocation = Location.register(reg.getRegister());

    79                                             bytes = reg.getValueKind().getPlatformKind().getSizeInBytes();

    80                                     } else if (objValues[i] instanceof StackSlot) {

    81                                             StackSlot slot = (StackSlot) objValues[i];

    82                                             oopLocation = Location.stack(asm.getOffset(slot));

    83                                             bytes = slot.getValueKind().getPlatformKind().getSizeInBytes();

    84                                     }

    85                                     if (oopLocation != null && !newLocations.contains(oopLocation)) {

    86                                             newLocations.add(oopLocation);

    87                                             newDerived.add(null);

    88                                             newSizeInBytes = Arrays.copyOf(newSizeInBytes, newSizeInBytes.length + 1);

    89                                         newSizeInBytes[newSizeInBytes.length - 1] = bytes;

    90                                 }

    91                         }

    92                     }

    93                 }

    94             }

    95 

    96             BytecodeFrame frame = new BytecodeFrame(null, resolvedMethod, bci, false, false, values, slotKinds, numLocals, numStack, 0);

    97             DebugInfo info = new DebugInfo(frame, vobjs);

    98             info.setReferenceMap(new HotSpotReferenceMap(newLocations.toArray(new Location[0]), newDerived.toArray(new Location[0]), newSizeInBytes, 8));

    99 

   100             asm.emitTrap(info);

   101         }, method);

   102     }

   103 }