opnsense-src/source/components/debugger/dbobject.c

/*******************************************************************************
 *
 * Module Name: dbobject - ACPI object decode and display
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2016, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#include "acdebug.h"


#define _COMPONENT          ACPI_CA_DEBUGGER
        ACPI_MODULE_NAME    ("dbobject")


/* Local prototypes */

static void
AcpiDbDecodeNode (
    ACPI_NAMESPACE_NODE     *Node);


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDumpMethodInfo
 *
 * PARAMETERS:  Status          - Method execution status
 *              WalkState       - Current state of the parse tree walk
 *
 * RETURN:      None
 *
 * DESCRIPTION: Called when a method has been aborted because of an error.
 *              Dumps the method execution stack, and the method locals/args,
 *              and disassembles the AML opcode that failed.
 *
 ******************************************************************************/

void
AcpiDbDumpMethodInfo (
    ACPI_STATUS             Status,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_THREAD_STATE       *Thread;


    /* Ignore control codes, they are not errors */

    if ((Status & AE_CODE_MASK) == AE_CODE_CONTROL)
    {
        return;
    }

    /* We may be executing a deferred opcode */

    if (WalkState->DeferredNode)
    {
        AcpiOsPrintf ("Executing subtree for Buffer/Package/Region\n");
        return;
    }

    /*
     * If there is no Thread, we are not actually executing a method.
     * This can happen when the iASL compiler calls the interpreter
     * to perform constant folding.
     */
    Thread = WalkState->Thread;
    if (!Thread)
    {
        return;
    }

    /* Display the method locals and arguments */

    AcpiOsPrintf ("\n");
    AcpiDbDecodeLocals (WalkState);
    AcpiOsPrintf ("\n");
    AcpiDbDecodeArguments (WalkState);
    AcpiOsPrintf ("\n");
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDecodeInternalObject
 *
 * PARAMETERS:  ObjDesc         - Object to be displayed
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of an internal object. Numbers/Strings/Buffers.
 *
 ******************************************************************************/

void
AcpiDbDecodeInternalObject (
    ACPI_OPERAND_OBJECT     *ObjDesc)
{
    UINT32                  i;


    if (!ObjDesc)
    {
        AcpiOsPrintf (" Uninitialized");
        return;
    }

    if (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND)
    {
        AcpiOsPrintf (" %p [%s]", ObjDesc,
            AcpiUtGetDescriptorName (ObjDesc));
        return;
    }

    AcpiOsPrintf (" %s", AcpiUtGetObjectTypeName (ObjDesc));

    switch (ObjDesc->Common.Type)
    {
    case ACPI_TYPE_INTEGER:

        AcpiOsPrintf (" %8.8X%8.8X",
            ACPI_FORMAT_UINT64 (ObjDesc->Integer.Value));
        break;

    case ACPI_TYPE_STRING:

        AcpiOsPrintf ("(%u) \"%.60s",
            ObjDesc->String.Length, ObjDesc->String.Pointer);

        if (ObjDesc->String.Length > 60)
        {
            AcpiOsPrintf ("...");
        }
        else
        {
            AcpiOsPrintf ("\"");
        }
        break;

    case ACPI_TYPE_BUFFER:

        AcpiOsPrintf ("(%u)", ObjDesc->Buffer.Length);
        for (i = 0; (i < 8) && (i < ObjDesc->Buffer.Length); i++)
        {
            AcpiOsPrintf (" %2.2X", ObjDesc->Buffer.Pointer[i]);
        }
        break;

    default:

        AcpiOsPrintf (" %p", ObjDesc);
        break;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDecodeNode
 *
 * PARAMETERS:  Node        - Object to be displayed
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of a namespace node
 *
 ******************************************************************************/

static void
AcpiDbDecodeNode (
    ACPI_NAMESPACE_NODE     *Node)
{

    AcpiOsPrintf ("<Node>            Name %4.4s",
        AcpiUtGetNodeName (Node));

    if (Node->Flags & ANOBJ_METHOD_ARG)
    {
        AcpiOsPrintf (" [Method Arg]");
    }
    if (Node->Flags & ANOBJ_METHOD_LOCAL)
    {
        AcpiOsPrintf (" [Method Local]");
    }

    switch (Node->Type)
    {
    /* These types have no attached object */

    case ACPI_TYPE_DEVICE:

        AcpiOsPrintf (" Device");
        break;

    case ACPI_TYPE_THERMAL:

        AcpiOsPrintf (" Thermal Zone");
        break;

    default:

        AcpiDbDecodeInternalObject (AcpiNsGetAttachedObject (Node));
        break;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDisplayInternalObject
 *
 * PARAMETERS:  ObjDesc         - Object to be displayed
 *              WalkState       - Current walk state
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of an internal object
 *
 ******************************************************************************/

void
AcpiDbDisplayInternalObject (
    ACPI_OPERAND_OBJECT     *ObjDesc,
    ACPI_WALK_STATE         *WalkState)
{
    UINT8                   Type;


    AcpiOsPrintf ("%p ", ObjDesc);

    if (!ObjDesc)
    {
        AcpiOsPrintf ("<Null Object>\n");
        return;
    }

    /* Decode the object type */

    switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
    {
    case ACPI_DESC_TYPE_PARSER:

        AcpiOsPrintf ("<Parser>  ");
        break;

    case ACPI_DESC_TYPE_NAMED:

        AcpiDbDecodeNode ((ACPI_NAMESPACE_NODE *) ObjDesc);
        break;

    case ACPI_DESC_TYPE_OPERAND:

        Type = ObjDesc->Common.Type;
        if (Type > ACPI_TYPE_LOCAL_MAX)
        {
            AcpiOsPrintf (" Type %X [Invalid Type]", (UINT32) Type);
            return;
        }

        /* Decode the ACPI object type */

        switch (ObjDesc->Common.Type)
        {
        case ACPI_TYPE_LOCAL_REFERENCE:

            AcpiOsPrintf ("[%s] ", AcpiUtGetReferenceName (ObjDesc));

            /* Decode the refererence */

            switch (ObjDesc->Reference.Class)
            {
            case ACPI_REFCLASS_LOCAL:

                AcpiOsPrintf ("%X ", ObjDesc->Reference.Value);
                if (WalkState)
                {
                    ObjDesc = WalkState->LocalVariables
                        [ObjDesc->Reference.Value].Object;
                    AcpiOsPrintf ("%p", ObjDesc);
                    AcpiDbDecodeInternalObject (ObjDesc);
                }
                break;

            case ACPI_REFCLASS_ARG:

                AcpiOsPrintf ("%X ", ObjDesc->Reference.Value);
                if (WalkState)
                {
                    ObjDesc = WalkState->Arguments
                        [ObjDesc->Reference.Value].Object;
                    AcpiOsPrintf ("%p", ObjDesc);
                    AcpiDbDecodeInternalObject (ObjDesc);
                }
                break;

            case ACPI_REFCLASS_INDEX:

                switch (ObjDesc->Reference.TargetType)
                {
                case ACPI_TYPE_BUFFER_FIELD:

                    AcpiOsPrintf ("%p", ObjDesc->Reference.Object);
                    AcpiDbDecodeInternalObject (ObjDesc->Reference.Object);
                    break;

                case ACPI_TYPE_PACKAGE:

                    AcpiOsPrintf ("%p", ObjDesc->Reference.Where);
                    if (!ObjDesc->Reference.Where)
                    {
                        AcpiOsPrintf (" Uninitialized WHERE pointer");
                    }
                    else
                    {
                        AcpiDbDecodeInternalObject (
                            *(ObjDesc->Reference.Where));
                    }
                    break;

                default:

                    AcpiOsPrintf ("Unknown index target type");
                    break;
                }
                break;

            case ACPI_REFCLASS_REFOF:

                if (!ObjDesc->Reference.Object)
                {
                    AcpiOsPrintf (
                        "Uninitialized reference subobject pointer");
                    break;
                }

                /* Reference can be to a Node or an Operand object */

                switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc->Reference.Object))
                {
                case ACPI_DESC_TYPE_NAMED:

                    AcpiDbDecodeNode (ObjDesc->Reference.Object);
                    break;

                case ACPI_DESC_TYPE_OPERAND:

                    AcpiDbDecodeInternalObject (ObjDesc->Reference.Object);
                    break;

                default:
                    break;
                }
                break;

            case ACPI_REFCLASS_NAME:

                AcpiDbDecodeNode (ObjDesc->Reference.Node);
                break;

            case ACPI_REFCLASS_DEBUG:
            case ACPI_REFCLASS_TABLE:

                AcpiOsPrintf ("\n");
                break;

            default:    /* Unknown reference class */

                AcpiOsPrintf ("%2.2X\n", ObjDesc->Reference.Class);
                break;
            }
            break;

        default:

            AcpiOsPrintf ("<Obj>            ");
            AcpiDbDecodeInternalObject (ObjDesc);
            break;
        }
        break;

    default:

        AcpiOsPrintf ("<Not a valid ACPI Object Descriptor> [%s]",
            AcpiUtGetDescriptorName (ObjDesc));
        break;
    }

    AcpiOsPrintf ("\n");
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDecodeLocals
 *
 * PARAMETERS:  WalkState       - State for current method
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all locals for the currently running control method
 *
 ******************************************************************************/

void
AcpiDbDecodeLocals (
    ACPI_WALK_STATE         *WalkState)
{
    UINT32                  i;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_NAMESPACE_NODE     *Node;
    BOOLEAN                 DisplayLocals = FALSE;


    ObjDesc = WalkState->MethodDesc;
    Node    = WalkState->MethodNode;

    if (!Node)
    {
        AcpiOsPrintf (
            "No method node (Executing subtree for buffer or opregion)\n");
        return;
    }

    if (Node->Type != ACPI_TYPE_METHOD)
    {
        AcpiOsPrintf ("Executing subtree for Buffer/Package/Region\n");
        return;
    }

    /* Are any locals actually set? */

    for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
    {
        ObjDesc = WalkState->LocalVariables[i].Object;
        if (ObjDesc)
        {
            DisplayLocals = TRUE;
            break;
        }
    }

    /* If any are set, only display the ones that are set */

    if (DisplayLocals)
    {
        AcpiOsPrintf ("\nInitialized Local Variables for method [%4.4s]:\n",
            AcpiUtGetNodeName (Node));

        for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
        {
            ObjDesc = WalkState->LocalVariables[i].Object;
            if (ObjDesc)
            {
                AcpiOsPrintf ("    Local%X: ", i);
                AcpiDbDisplayInternalObject (ObjDesc, WalkState);
            }
        }
    }
    else
    {
        AcpiOsPrintf (
            "No Local Variables are initialized for method [%4.4s]\n",
            AcpiUtGetNodeName (Node));
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDbDecodeArguments
 *
 * PARAMETERS:  WalkState       - State for current method
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all arguments for the currently running control method
 *
 ******************************************************************************/

void
AcpiDbDecodeArguments (
    ACPI_WALK_STATE         *WalkState)
{
    UINT32                  i;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_NAMESPACE_NODE     *Node;
    BOOLEAN                 DisplayArgs = FALSE;


    Node = WalkState->MethodNode;
    ObjDesc = WalkState->MethodDesc;

    if (!Node)
    {
        AcpiOsPrintf (
            "No method node (Executing subtree for buffer or opregion)\n");
        return;
    }

    if (Node->Type != ACPI_TYPE_METHOD)
    {
        AcpiOsPrintf ("Executing subtree for Buffer/Package/Region\n");
        return;
    }

    /* Are any arguments actually set? */

    for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
    {
        ObjDesc = WalkState->Arguments[i].Object;
        if (ObjDesc)
        {
            DisplayArgs = TRUE;
            break;
        }
    }

    /* If any are set, only display the ones that are set */

    if (DisplayArgs)
    {
        AcpiOsPrintf (
            "Initialized Arguments for Method [%4.4s]:  "
            "(%X arguments defined for method invocation)\n",
            AcpiUtGetNodeName (Node), ObjDesc->Method.ParamCount);

        for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
        {
            ObjDesc = WalkState->Arguments[i].Object;
            if (ObjDesc)
            {
                AcpiOsPrintf ("    Arg%u:   ", i);
                AcpiDbDisplayInternalObject (ObjDesc, WalkState);
            }
        }
    }
    else
    {
        AcpiOsPrintf (
            "No Arguments are initialized for method [%4.4s]\n",
            AcpiUtGetNodeName (Node));
    }
}