xref: /aosp_15_r20/external/oj-libjdwp/src/share/back/debugDispatch.c (revision e82f7db8c62aed3c168547abe4f9f4aeceaebfc7)

/*
 * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "util.h"
#include "transport.h"
#include "debugDispatch.h"
#include "VirtualMachineImpl.h"
#include "ReferenceTypeImpl.h"
#include "ClassTypeImpl.h"
#include "InterfaceTypeImpl.h"
#include "ArrayTypeImpl.h"
#include "FieldImpl.h"
#include "MethodImpl.h"
#include "ObjectReferenceImpl.h"
#include "StringReferenceImpl.h"
#include "ThreadReferenceImpl.h"
#include "ThreadGroupReferenceImpl.h"
#include "ClassLoaderReferenceImpl.h"
#include "ClassObjectReferenceImpl.h"
#include "ArrayReferenceImpl.h"
#include "EventRequestImpl.h"
#include "StackFrameImpl.h"
#include "DDMImpl.h"

static void **l1Array;

void
debugDispatch_initialize(void)
{
    /*
     * Create the level-one (CommandSet) dispatch table.
     * Zero the table so that unknown CommandSets do not
     * cause random errors.
     */
    l1Array = jvmtiAllocate((JDWP_HIGHEST_COMMAND_SET+1) * sizeof(void *));

    if (l1Array == NULL) {
        EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"command set array");
    }

    (void)memset(l1Array, 0, (JDWP_HIGHEST_COMMAND_SET+1) * sizeof(void *));

    /*
     * Create the level-two (Command) dispatch tables to the
     * corresponding slots in the CommandSet dispatch table..
     */
    l1Array[JDWP_COMMAND_SET(VirtualMachine)] = (void *)VirtualMachine_Cmds;
    l1Array[JDWP_COMMAND_SET(ReferenceType)] = (void *)ReferenceType_Cmds;
    l1Array[JDWP_COMMAND_SET(ClassType)] = (void *)ClassType_Cmds;
    l1Array[JDWP_COMMAND_SET(InterfaceType)] = (void *)InterfaceType_Cmds;
    l1Array[JDWP_COMMAND_SET(ArrayType)] = (void *)ArrayType_Cmds;

    l1Array[JDWP_COMMAND_SET(Field)] = (void *)Field_Cmds;
    l1Array[JDWP_COMMAND_SET(Method)] = (void *)Method_Cmds;
    l1Array[JDWP_COMMAND_SET(ObjectReference)] = (void *)ObjectReference_Cmds;
    l1Array[JDWP_COMMAND_SET(StringReference)] = (void *)StringReference_Cmds;
    l1Array[JDWP_COMMAND_SET(ThreadReference)] = (void *)ThreadReference_Cmds;
    l1Array[JDWP_COMMAND_SET(ThreadGroupReference)] = (void *)ThreadGroupReference_Cmds;
    l1Array[JDWP_COMMAND_SET(ClassLoaderReference)] = (void *)ClassLoaderReference_Cmds;
    l1Array[JDWP_COMMAND_SET(ArrayReference)] = (void *)ArrayReference_Cmds;
    l1Array[JDWP_COMMAND_SET(EventRequest)] = (void *)EventRequest_Cmds;
    l1Array[JDWP_COMMAND_SET(StackFrame)] = (void *)StackFrame_Cmds;
    l1Array[JDWP_COMMAND_SET(ClassObjectReference)] = (void *)ClassObjectReference_Cmds;
}

void
debugDispatch_reset(void)
{
}

CommandHandler
debugDispatch_getHandler(int cmdSet, int cmd)
{
    void **l2Array;

    // ANDROID-CHANGED: DDMS has cmdSet -57 (199u). Check for this one specifically.
    if (cmdSet == JDWP_COMMAND_SET(DDM)) {
        l2Array = (void **)DDM_Cmds;
    } else if (cmdSet > JDWP_HIGHEST_COMMAND_SET || cmdSet < 0) {
        return NULL;
    } else {
        l2Array = (void **)l1Array[cmdSet];
    }

    /*
     * If there is no such CommandSet or the Command
     * is greater than the nummber of commands (the first
     * element) in the CommandSet, indicate this is invalid.
     */
    /*LINTED*/
    if (l2Array == NULL || cmd > (int)(intptr_t)(void*)l2Array[0]) {
        return NULL;
    }

    return (CommandHandler)l2Array[cmd];
}