C++ AcpiDsGetCurrentWalkState函数代码示例

void
AcpiDbDisplayResults (void)
{
    UINT32                  i;
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    UINT32                  NumResults = 0;
    ACPI_NAMESPACE_NODE     *Node;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

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

    if (WalkState->Results)
    {
        NumResults = WalkState->Results->Results.NumResults;
    }

    AcpiOsPrintf ("Method [%4.4s] has %X stacked result objects\n",
        Node->Name.Ascii, NumResults);

    for (i = 0; i < NumResults; i++)
    {
        ObjDesc = WalkState->Results->Results.ObjDesc[i];
        AcpiOsPrintf ("Result%d: ", i);
        AcpiDbDisplayInternalObject (ObjDesc, WalkState);
    }
}

void
AcpiDbDisplayCallingTree (
    void)
{
    ACPI_WALK_STATE         *WalkState;
    ACPI_NAMESPACE_NODE     *Node;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

    Node = WalkState->MethodNode;
    AcpiOsPrintf ("Current Control Method Call Tree\n");

    while (WalkState)
    {
        Node = WalkState->MethodNode;
        AcpiOsPrintf ("    [%4.4s]\n", AcpiUtGetNodeName (Node));

        WalkState = WalkState->Next;
    }
}

void
AcpiDbDisplayLocals (void)
{
    UINT32                  i;
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_NAMESPACE_NODE     *Node;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

    ObjDesc = WalkState->MethodDesc;
    Node = WalkState->MethodNode;
    if (!Node)
    {
        AcpiOsPrintf ("No method node (Executing subtree for buffer or opregion)\n");
        return;
    }

    AcpiOsPrintf ("Local Variables for method [%4.4s]:\n", Node->Name.Ascii);

    for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
    {
        ObjDesc = WalkState->LocalVariables[i].Object;
        AcpiOsPrintf ("Local%d: ", i);
        AcpiDbDisplayInternalObject (ObjDesc, WalkState);
    }
}

void
AcpiDbDisplayResults (
    void)
{
    UINT32                  i;
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    UINT32                  ResultCount = 0;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_GENERIC_STATE      *Frame;
    UINT32                  Index; /* Index onto current frame */


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

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

    if (WalkState->Results)
    {
        ResultCount = WalkState->ResultCount;
    }

    AcpiOsPrintf ("Method [%4.4s] has %X stacked result objects\n",
        AcpiUtGetNodeName (Node), ResultCount);

    /* From the top element of result stack */

    Frame = WalkState->Results;
    Index = (ResultCount - 1) % ACPI_RESULTS_FRAME_OBJ_NUM;

    for (i = 0; i < ResultCount; i++)
    {
        ObjDesc = Frame->Results.ObjDesc[Index];
        AcpiOsPrintf ("Result%u: ", i);
        AcpiDbDisplayInternalObject (ObjDesc, WalkState);

        if (Index == 0)
        {
            Frame = Frame->Results.Next;
            Index = ACPI_RESULTS_FRAME_OBJ_NUM;
        }

        Index--;
    }
}

void
AcpiDbDisplayArguments (
    void)
{
    ACPI_WALK_STATE         *WalkState;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

    AcpiDbDecodeArguments (WalkState);
}

void
AcpiDbDisplayArguments (void)
{
    UINT32                  i;
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    UINT32                  NumArgs;
    UINT32                  Concurrency;
    ACPI_NAMESPACE_NODE     *Node;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

    ObjDesc = WalkState->MethodDesc;
    Node    = WalkState->MethodNode;
    if (!Node)
    {
        AcpiOsPrintf ("No method node (Executing subtree for buffer or opregion)\n");
        return;
    }

    NumArgs     = ObjDesc->Method.ParamCount;
    Concurrency = ObjDesc->Method.Concurrency;

    AcpiOsPrintf ("Method [%4.4s] has %X arguments, max concurrency = %X\n",
            Node->Name.Ascii, NumArgs, Concurrency);

    for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
    {
        ObjDesc = WalkState->Arguments[i].Object;
        AcpiOsPrintf ("Arg%d: ", i);
        AcpiDbDisplayInternalObject (ObjDesc, WalkState);
    }
}

void
AcpiDbSetMethodData (
    char                    *TypeArg,
    char                    *IndexArg,
    char                    *ValueArg)
{
    char                    Type;
    UINT32                  Index;
    UINT32                  Value;
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_STATUS             Status;
    ACPI_NAMESPACE_NODE     *Node;


    /* Validate TypeArg */

    AcpiUtStrupr (TypeArg);
    Type = TypeArg[0];
    if ((Type != 'L') &&
        (Type != 'A') &&
        (Type != 'N'))
    {
        AcpiOsPrintf ("Invalid SET operand: %s\n", TypeArg);
        return;
    }

    Value = ACPI_STRTOUL (ValueArg, NULL, 16);

    if (Type == 'N')
    {
        Node = AcpiDbConvertToNode (IndexArg);
        if (Node->Type != ACPI_TYPE_INTEGER)
        {
            AcpiOsPrintf ("Can only set Integer nodes\n");
            return;
        }
        ObjDesc = Node->Object;
        ObjDesc->Integer.Value = Value;
        return;
    }

    /* Get the index and value */

    Index = ACPI_STRTOUL (IndexArg, NULL, 16);

    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

    /* Create and initialize the new object */

    ObjDesc = AcpiUtCreateIntegerObject ((UINT64) Value);
    if (!ObjDesc)
    {
        AcpiOsPrintf ("Could not create an internal object\n");
        return;
    }

    /* Store the new object into the target */

    switch (Type)
    {
    case 'A':

        /* Set a method argument */

        if (Index > ACPI_METHOD_MAX_ARG)
        {
            AcpiOsPrintf ("Arg%u - Invalid argument name\n", Index);
            goto Cleanup;
        }

        Status = AcpiDsStoreObjectToLocal (ACPI_REFCLASS_ARG, Index, ObjDesc,
                    WalkState);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }

        ObjDesc = WalkState->Arguments[Index].Object;

        AcpiOsPrintf ("Arg%u: ", Index);
        AcpiDmDisplayInternalObject (ObjDesc, WalkState);
        break;

    case 'L':

        /* Set a method local */

        if (Index > ACPI_METHOD_MAX_LOCAL)
        {
            AcpiOsPrintf ("Local%u - Invalid local variable name\n", Index);
            goto Cleanup;
        }

        Status = AcpiDsStoreObjectToLocal (ACPI_REFCLASS_LOCAL, Index, ObjDesc,
//.........这里部分代码省略.........

void
AcpiDbDisplayMethodInfo (
    ACPI_PARSE_OBJECT       *StartOp)
{
    ACPI_WALK_STATE         *WalkState;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_PARSE_OBJECT       *RootOp;
    ACPI_PARSE_OBJECT       *Op;
    const ACPI_OPCODE_INFO  *OpInfo;
    UINT32                  NumOps = 0;
    UINT32                  NumOperands = 0;
    UINT32                  NumOperators = 0;
    UINT32                  NumRemainingOps = 0;
    UINT32                  NumRemainingOperands = 0;
    UINT32                  NumRemainingOperators = 0;
    BOOLEAN                 CountRemaining = FALSE;


    WalkState = AcpiDsGetCurrentWalkState (AcpiGbl_CurrentWalkList);
    if (!WalkState)
    {
        AcpiOsPrintf ("There is no method currently executing\n");
        return;
    }

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

    AcpiOsPrintf ("Currently executing control method is [%4.4s]\n",
            AcpiUtGetNodeName (Node));
    AcpiOsPrintf ("%X Arguments, SyncLevel = %X\n",
            (UINT32) ObjDesc->Method.ParamCount,
            (UINT32) ObjDesc->Method.SyncLevel);


    RootOp = StartOp;
    while (RootOp->Common.Parent)
    {
        RootOp = RootOp->Common.Parent;
    }

    Op = RootOp;

    while (Op)
    {
        if (Op == StartOp)
        {
            CountRemaining = TRUE;
        }

        NumOps++;
        if (CountRemaining)
        {
            NumRemainingOps++;
        }

        /* Decode the opcode */

        OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
        switch (OpInfo->Class)
        {
        case AML_CLASS_ARGUMENT:

            if (CountRemaining)
            {
                NumRemainingOperands++;
            }

            NumOperands++;
            break;

        case AML_CLASS_UNKNOWN:

            /* Bad opcode or ASCII character */

            continue;

        default:

            if (CountRemaining)
            {
                NumRemainingOperators++;
            }

            NumOperators++;
            break;
        }

        Op = AcpiPsGetDepthNext (StartOp, Op);
    }

    AcpiOsPrintf (
        "Method contains:       %X AML Opcodes - %X Operators, %X Operands\n",
        NumOps, NumOperators, NumOperands);

    AcpiOsPrintf (
        "Remaining to execute:  %X AML Opcodes - %X Operators, %X Operands\n",
        NumRemainingOps, NumRemainingOperators, NumRemainingOperands);
}

ACPI_STATUS
AcpiPsParseAml (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status;
    ACPI_THREAD_STATE       *Thread;
    ACPI_THREAD_STATE       *PrevWalkList = AcpiGbl_CurrentWalkList;
    ACPI_WALK_STATE         *PreviousWalkState;


    ACPI_FUNCTION_TRACE (PsParseAml);

    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
        "Entered with WalkState=%p Aml=%p size=%X\n",
        WalkState, WalkState->ParserState.Aml,
        WalkState->ParserState.AmlSize));

    if (!WalkState->ParserState.Aml)
    {
        return_ACPI_STATUS (AE_NULL_OBJECT);
    }

    /* Create and initialize a new thread state */

    Thread = AcpiUtCreateThreadState ();
    if (!Thread)
    {
        if (WalkState->MethodDesc)
        {
            /* Executing a control method - additional cleanup */

            AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
        }

        AcpiDsDeleteWalkState (WalkState);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    WalkState->Thread = Thread;

    /*
     * If executing a method, the starting SyncLevel is this method's
     * SyncLevel
     */
    if (WalkState->MethodDesc)
    {
        WalkState->Thread->CurrentSyncLevel = WalkState->MethodDesc->Method.SyncLevel;
    }

    AcpiDsPushWalkState (WalkState, Thread);

    /*
     * This global allows the AML debugger to get a handle to the currently
     * executing control method.
     */
    AcpiGbl_CurrentWalkList = Thread;

    /*
     * Execute the walk loop as long as there is a valid Walk State. This
     * handles nested control method invocations without recursion.
     */
    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "State=%p\n", WalkState));

    Status = AE_OK;
    while (WalkState)
    {
        if (ACPI_SUCCESS (Status))
        {
            /*
             * The ParseLoop executes AML until the method terminates
             * or calls another method.
             */
            Status = AcpiPsParseLoop (WalkState);
        }

        ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
            "Completed one call to walk loop, %s State=%p\n",
            AcpiFormatException (Status), WalkState));

        if (Status == AE_CTRL_TRANSFER)
        {
            /*
             * A method call was detected.
             * Transfer control to the called control method
             */
            Status = AcpiDsCallControlMethod (Thread, WalkState, NULL);
            if (ACPI_FAILURE (Status))
            {
                Status = AcpiDsMethodError (Status, WalkState);
            }

            /*
             * If the transfer to the new method method call worked, a new walk
             * state was created -- get it
             */
            WalkState = AcpiDsGetCurrentWalkState (Thread);
            continue;
        }
        else if (Status == AE_CTRL_TERMINATE)
        {
//.........这里部分代码省略.........

//.........这里部分代码省略.........

        }
    }

    /*
     * Execute the walk loop as long as there is a valid Walk State.  This
     * handles nested control method invocations without recursion.
     */
    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "State=%p\n", WalkState));

    Status = AE_OK;
    while (WalkState)
    {
        if (ACPI_SUCCESS (Status))
        {
            Status = AcpiPsParseLoop (WalkState);
        }

        ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
            "Completed one call to walk loop, State=%p\n", WalkState));

        if (Status == AE_CTRL_TRANSFER)
        {
            /*
             * A method call was detected.
             * Transfer control to the called control method
             */
            Status = AcpiDsCallControlMethod (&WalkList, WalkState, NULL);

            /*
             * If the transfer to the new method method call worked, a new walk
             * state was created -- get it
             */
            WalkState = AcpiDsGetCurrentWalkState (&WalkList);
            continue;
        }

        else if (Status == AE_CTRL_TERMINATE)
        {
            Status = AE_OK;
        }

        /* We are done with this walk, move on to the parent if any */

        WalkState = AcpiDsPopWalkState (&WalkList);

        /* Extract return value before we delete WalkState */

        ReturnDesc = WalkState->ReturnDesc;

        ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "ReturnValue=%p, State=%p\n",
            WalkState->ReturnDesc, WalkState));

        /* Reset the current scope to the beginning of scope stack */

        AcpiDsScopeStackClear (WalkState);

        /*
         * If we just returned from the execution of a control method,
         * there's lots of cleanup to do
         */
        if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE)
        {
            AcpiDsTerminateControlMethod (WalkState);
        }