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      1 /*
      2  * Copyright (c) 1998, 2008, 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.  Oracle designates this
      8  * particular file as subject to the "Classpath" exception as provided
      9  * by Oracle in the LICENSE file that accompanied this code.
     10  *
     11  * This code is distributed in the hope that it will be useful, but WITHOUT
     12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  * version 2 for more details (a copy is included in the LICENSE file that
     15  * accompanied this code).
     16  *
     17  * You should have received a copy of the GNU General Public License version
     18  * 2 along with this work; if not, write to the Free Software Foundation,
     19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
     20  *
     21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
     22  * or visit www.oracle.com if you need additional information or have any
     23  * questions.
     24  */
     25 
     26 #include "util.h"
     27 #include "transport.h"
     28 #include "debugDispatch.h"
     29 #include "VirtualMachineImpl.h"
     30 #include "ReferenceTypeImpl.h"
     31 #include "ClassTypeImpl.h"
     32 #include "InterfaceTypeImpl.h"
     33 #include "ArrayTypeImpl.h"
     34 #include "FieldImpl.h"
     35 #include "MethodImpl.h"
     36 #include "ObjectReferenceImpl.h"
     37 #include "StringReferenceImpl.h"
     38 #include "ThreadReferenceImpl.h"
     39 #include "ThreadGroupReferenceImpl.h"
     40 #include "ClassLoaderReferenceImpl.h"
     41 #include "ClassObjectReferenceImpl.h"
     42 #include "ArrayReferenceImpl.h"
     43 #include "EventRequestImpl.h"
     44 #include "StackFrameImpl.h"
     45 #include "DDMImpl.h"
     46 
     47 static void **l1Array;
     48 
     49 void
     50 debugDispatch_initialize(void)
     51 {
     52     /*
     53      * Create the level-one (CommandSet) dispatch table.
     54      * Zero the table so that unknown CommandSets do not
     55      * cause random errors.
     56      */
     57     l1Array = jvmtiAllocate((JDWP_HIGHEST_COMMAND_SET+1) * sizeof(void *));
     58 
     59     if (l1Array == NULL) {
     60         EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"command set array");
     61     }
     62 
     63     (void)memset(l1Array, 0, (JDWP_HIGHEST_COMMAND_SET+1) * sizeof(void *));
     64 
     65     /*
     66      * Create the level-two (Command) dispatch tables to the
     67      * corresponding slots in the CommandSet dispatch table..
     68      */
     69     l1Array[JDWP_COMMAND_SET(VirtualMachine)] = (void *)VirtualMachine_Cmds;
     70     l1Array[JDWP_COMMAND_SET(ReferenceType)] = (void *)ReferenceType_Cmds;
     71     l1Array[JDWP_COMMAND_SET(ClassType)] = (void *)ClassType_Cmds;
     72     l1Array[JDWP_COMMAND_SET(InterfaceType)] = (void *)InterfaceType_Cmds;
     73     l1Array[JDWP_COMMAND_SET(ArrayType)] = (void *)ArrayType_Cmds;
     74 
     75     l1Array[JDWP_COMMAND_SET(Field)] = (void *)Field_Cmds;
     76     l1Array[JDWP_COMMAND_SET(Method)] = (void *)Method_Cmds;
     77     l1Array[JDWP_COMMAND_SET(ObjectReference)] = (void *)ObjectReference_Cmds;
     78     l1Array[JDWP_COMMAND_SET(StringReference)] = (void *)StringReference_Cmds;
     79     l1Array[JDWP_COMMAND_SET(ThreadReference)] = (void *)ThreadReference_Cmds;
     80     l1Array[JDWP_COMMAND_SET(ThreadGroupReference)] = (void *)ThreadGroupReference_Cmds;
     81     l1Array[JDWP_COMMAND_SET(ClassLoaderReference)] = (void *)ClassLoaderReference_Cmds;
     82     l1Array[JDWP_COMMAND_SET(ArrayReference)] = (void *)ArrayReference_Cmds;
     83     l1Array[JDWP_COMMAND_SET(EventRequest)] = (void *)EventRequest_Cmds;
     84     l1Array[JDWP_COMMAND_SET(StackFrame)] = (void *)StackFrame_Cmds;
     85     l1Array[JDWP_COMMAND_SET(ClassObjectReference)] = (void *)ClassObjectReference_Cmds;
     86 }
     87 
     88 void
     89 debugDispatch_reset(void)
     90 {
     91 }
     92 
     93 CommandHandler
     94 debugDispatch_getHandler(int cmdSet, int cmd)
     95 {
     96     void **l2Array;
     97 
     98     // ANDROID-CHANGED: DDMS has cmdSet -57 (199u). Check for this one specifically.
     99     if (cmdSet == JDWP_COMMAND_SET(DDM)) {
    100         l2Array = (void **)DDM_Cmds;
    101     } else if (cmdSet > JDWP_HIGHEST_COMMAND_SET || cmdSet < 0) {
    102         return NULL;
    103     } else {
    104         l2Array = (void **)l1Array[cmdSet];
    105     }
    106 
    107     /*
    108      * If there is no such CommandSet or the Command
    109      * is greater than the nummber of commands (the first
    110      * element) in the CommandSet, indicate this is invalid.
    111      */
    112     /*LINTED*/
    113     if (l2Array == NULL || cmd > (int)(intptr_t)(void*)l2Array[0]) {
    114         return NULL;
    115     }
    116 
    117     return (CommandHandler)l2Array[cmd];
    118 }
    119