1/*******************************************************************************
2 *
3 * Module Name: dsmthdat - control method arguments and local variables
4 *
5 ******************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions, and the following disclaimer,
16 *    without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 *    substantially similar to the "NO WARRANTY" disclaimer below
19 *    ("Disclaimer") and any redistribution must be conditioned upon
20 *    including a substantially similar Disclaimer requirement for further
21 *    binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 *    of any contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#define __DSMTHDAT_C__
45
46#include <contrib/dev/acpica/include/acpi.h>
47#include <contrib/dev/acpica/include/accommon.h>
48#include <contrib/dev/acpica/include/acdispat.h>
49#include <contrib/dev/acpica/include/acnamesp.h>
50#include <contrib/dev/acpica/include/acinterp.h>
51
52
53#define _COMPONENT          ACPI_DISPATCHER
54        ACPI_MODULE_NAME    ("dsmthdat")
55
56/* Local prototypes */
57
58static void
59AcpiDsMethodDataDeleteValue (
60    UINT8                   Type,
61    UINT32                  Index,
62    ACPI_WALK_STATE         *WalkState);
63
64static ACPI_STATUS
65AcpiDsMethodDataSetValue (
66    UINT8                   Type,
67    UINT32                  Index,
68    ACPI_OPERAND_OBJECT     *Object,
69    ACPI_WALK_STATE         *WalkState);
70
71#ifdef ACPI_OBSOLETE_FUNCTIONS
72ACPI_OBJECT_TYPE
73AcpiDsMethodDataGetType (
74    UINT16                  Opcode,
75    UINT32                  Index,
76    ACPI_WALK_STATE         *WalkState);
77#endif
78
79
80/*******************************************************************************
81 *
82 * FUNCTION:    AcpiDsMethodDataInit
83 *
84 * PARAMETERS:  WalkState           - Current walk state object
85 *
86 * RETURN:      Status
87 *
88 * DESCRIPTION: Initialize the data structures that hold the method's arguments
89 *              and locals. The data struct is an array of namespace nodes for
90 *              each - this allows RefOf and DeRefOf to work properly for these
91 *              special data types.
92 *
93 * NOTES:       WalkState fields are initialized to zero by the
94 *              ACPI_ALLOCATE_ZEROED().
95 *
96 *              A pseudo-Namespace Node is assigned to each argument and local
97 *              so that RefOf() can return a pointer to the Node.
98 *
99 ******************************************************************************/
100
101void
102AcpiDsMethodDataInit (
103    ACPI_WALK_STATE         *WalkState)
104{
105    UINT32                  i;
106
107
108    ACPI_FUNCTION_TRACE (DsMethodDataInit);
109
110
111    /* Init the method arguments */
112
113    for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
114    {
115        ACPI_MOVE_32_TO_32 (&WalkState->Arguments[i].Name, NAMEOF_ARG_NTE);
116        WalkState->Arguments[i].Name.Integer |= (i << 24);
117        WalkState->Arguments[i].DescriptorType = ACPI_DESC_TYPE_NAMED;
118        WalkState->Arguments[i].Type = ACPI_TYPE_ANY;
119        WalkState->Arguments[i].Flags = ANOBJ_METHOD_ARG;
120    }
121
122    /* Init the method locals */
123
124    for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
125    {
126        ACPI_MOVE_32_TO_32 (&WalkState->LocalVariables[i].Name, NAMEOF_LOCAL_NTE);
127
128        WalkState->LocalVariables[i].Name.Integer |= (i << 24);
129        WalkState->LocalVariables[i].DescriptorType = ACPI_DESC_TYPE_NAMED;
130        WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
131        WalkState->LocalVariables[i].Flags = ANOBJ_METHOD_LOCAL;
132    }
133
134    return_VOID;
135}
136
137
138/*******************************************************************************
139 *
140 * FUNCTION:    AcpiDsMethodDataDeleteAll
141 *
142 * PARAMETERS:  WalkState           - Current walk state object
143 *
144 * RETURN:      None
145 *
146 * DESCRIPTION: Delete method locals and arguments. Arguments are only
147 *              deleted if this method was called from another method.
148 *
149 ******************************************************************************/
150
151void
152AcpiDsMethodDataDeleteAll (
153    ACPI_WALK_STATE         *WalkState)
154{
155    UINT32                  Index;
156
157
158    ACPI_FUNCTION_TRACE (DsMethodDataDeleteAll);
159
160
161    /* Detach the locals */
162
163    for (Index = 0; Index < ACPI_METHOD_NUM_LOCALS; Index++)
164    {
165        if (WalkState->LocalVariables[Index].Object)
166        {
167            ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%u=%p\n",
168                    Index, WalkState->LocalVariables[Index].Object));
169
170            /* Detach object (if present) and remove a reference */
171
172            AcpiNsDetachObject (&WalkState->LocalVariables[Index]);
173        }
174    }
175
176    /* Detach the arguments */
177
178    for (Index = 0; Index < ACPI_METHOD_NUM_ARGS; Index++)
179    {
180        if (WalkState->Arguments[Index].Object)
181        {
182            ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%u=%p\n",
183                    Index, WalkState->Arguments[Index].Object));
184
185            /* Detach object (if present) and remove a reference */
186
187            AcpiNsDetachObject (&WalkState->Arguments[Index]);
188        }
189    }
190
191    return_VOID;
192}
193
194
195/*******************************************************************************
196 *
197 * FUNCTION:    AcpiDsMethodDataInitArgs
198 *
199 * PARAMETERS:  *Params         - Pointer to a parameter list for the method
200 *              MaxParamCount   - The arg count for this method
201 *              WalkState       - Current walk state object
202 *
203 * RETURN:      Status
204 *
205 * DESCRIPTION: Initialize arguments for a method. The parameter list is a list
206 *              of ACPI operand objects, either null terminated or whose length
207 *              is defined by MaxParamCount.
208 *
209 ******************************************************************************/
210
211ACPI_STATUS
212AcpiDsMethodDataInitArgs (
213    ACPI_OPERAND_OBJECT     **Params,
214    UINT32                  MaxParamCount,
215    ACPI_WALK_STATE         *WalkState)
216{
217    ACPI_STATUS             Status;
218    UINT32                  Index = 0;
219
220
221    ACPI_FUNCTION_TRACE_PTR (DsMethodDataInitArgs, Params);
222
223
224    if (!Params)
225    {
226        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n"));
227        return_ACPI_STATUS (AE_OK);
228    }
229
230    /* Copy passed parameters into the new method stack frame */
231
232    while ((Index < ACPI_METHOD_NUM_ARGS) &&
233           (Index < MaxParamCount)        &&
234            Params[Index])
235    {
236        /*
237         * A valid parameter.
238         * Store the argument in the method/walk descriptor.
239         * Do not copy the arg in order to implement call by reference
240         */
241        Status = AcpiDsMethodDataSetValue (ACPI_REFCLASS_ARG, Index,
242                    Params[Index], WalkState);
243        if (ACPI_FAILURE (Status))
244        {
245            return_ACPI_STATUS (Status);
246        }
247
248        Index++;
249    }
250
251    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%u args passed to method\n", Index));
252    return_ACPI_STATUS (AE_OK);
253}
254
255
256/*******************************************************************************
257 *
258 * FUNCTION:    AcpiDsMethodDataGetNode
259 *
260 * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
261 *                                    ACPI_REFCLASS_ARG
262 *              Index               - Which Local or Arg whose type to get
263 *              WalkState           - Current walk state object
264 *              Node                - Where the node is returned.
265 *
266 * RETURN:      Status and node
267 *
268 * DESCRIPTION: Get the Node associated with a local or arg.
269 *
270 ******************************************************************************/
271
272ACPI_STATUS
273AcpiDsMethodDataGetNode (
274    UINT8                   Type,
275    UINT32                  Index,
276    ACPI_WALK_STATE         *WalkState,
277    ACPI_NAMESPACE_NODE     **Node)
278{
279    ACPI_FUNCTION_TRACE (DsMethodDataGetNode);
280
281
282    /*
283     * Method Locals and Arguments are supported
284     */
285    switch (Type)
286    {
287    case ACPI_REFCLASS_LOCAL:
288
289        if (Index > ACPI_METHOD_MAX_LOCAL)
290        {
291            ACPI_ERROR ((AE_INFO,
292                "Local index %u is invalid (max %u)",
293                Index, ACPI_METHOD_MAX_LOCAL));
294            return_ACPI_STATUS (AE_AML_INVALID_INDEX);
295        }
296
297        /* Return a pointer to the pseudo-node */
298
299        *Node = &WalkState->LocalVariables[Index];
300        break;
301
302    case ACPI_REFCLASS_ARG:
303
304        if (Index > ACPI_METHOD_MAX_ARG)
305        {
306            ACPI_ERROR ((AE_INFO,
307                "Arg index %u is invalid (max %u)",
308                Index, ACPI_METHOD_MAX_ARG));
309            return_ACPI_STATUS (AE_AML_INVALID_INDEX);
310        }
311
312        /* Return a pointer to the pseudo-node */
313
314        *Node = &WalkState->Arguments[Index];
315        break;
316
317    default:
318
319        ACPI_ERROR ((AE_INFO, "Type %u is invalid", Type));
320        return_ACPI_STATUS (AE_TYPE);
321    }
322
323    return_ACPI_STATUS (AE_OK);
324}
325
326
327/*******************************************************************************
328 *
329 * FUNCTION:    AcpiDsMethodDataSetValue
330 *
331 * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
332 *                                    ACPI_REFCLASS_ARG
333 *              Index               - Which Local or Arg to get
334 *              Object              - Object to be inserted into the stack entry
335 *              WalkState           - Current walk state object
336 *
337 * RETURN:      Status
338 *
339 * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
340 *              Note: There is no "implicit conversion" for locals.
341 *
342 ******************************************************************************/
343
344static ACPI_STATUS
345AcpiDsMethodDataSetValue (
346    UINT8                   Type,
347    UINT32                  Index,
348    ACPI_OPERAND_OBJECT     *Object,
349    ACPI_WALK_STATE         *WalkState)
350{
351    ACPI_STATUS             Status;
352    ACPI_NAMESPACE_NODE     *Node;
353
354
355    ACPI_FUNCTION_TRACE (DsMethodDataSetValue);
356
357
358    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
359        "NewObj %p Type %2.2X, Refs=%u [%s]\n", Object,
360        Type, Object->Common.ReferenceCount,
361        AcpiUtGetTypeName (Object->Common.Type)));
362
363    /* Get the namespace node for the arg/local */
364
365    Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
366    if (ACPI_FAILURE (Status))
367    {
368        return_ACPI_STATUS (Status);
369    }
370
371    /*
372     * Increment ref count so object can't be deleted while installed.
373     * NOTE: We do not copy the object in order to preserve the call by
374     * reference semantics of ACPI Control Method invocation.
375     * (See ACPI Specification 2.0C)
376     */
377    AcpiUtAddReference (Object);
378
379    /* Install the object */
380
381    Node->Object = Object;
382    return_ACPI_STATUS (Status);
383}
384
385
386/*******************************************************************************
387 *
388 * FUNCTION:    AcpiDsMethodDataGetValue
389 *
390 * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
391 *                                    ACPI_REFCLASS_ARG
392 *              Index               - Which localVar or argument to get
393 *              WalkState           - Current walk state object
394 *              DestDesc            - Where Arg or Local value is returned
395 *
396 * RETURN:      Status
397 *
398 * DESCRIPTION: Retrieve value of selected Arg or Local for this method
399 *              Used only in AcpiExResolveToValue().
400 *
401 ******************************************************************************/
402
403ACPI_STATUS
404AcpiDsMethodDataGetValue (
405    UINT8                   Type,
406    UINT32                  Index,
407    ACPI_WALK_STATE         *WalkState,
408    ACPI_OPERAND_OBJECT     **DestDesc)
409{
410    ACPI_STATUS             Status;
411    ACPI_NAMESPACE_NODE     *Node;
412    ACPI_OPERAND_OBJECT     *Object;
413
414
415    ACPI_FUNCTION_TRACE (DsMethodDataGetValue);
416
417
418    /* Validate the object descriptor */
419
420    if (!DestDesc)
421    {
422        ACPI_ERROR ((AE_INFO, "Null object descriptor pointer"));
423        return_ACPI_STATUS (AE_BAD_PARAMETER);
424    }
425
426    /* Get the namespace node for the arg/local */
427
428    Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
429    if (ACPI_FAILURE (Status))
430    {
431        return_ACPI_STATUS (Status);
432    }
433
434    /* Get the object from the node */
435
436    Object = Node->Object;
437
438    /* Examine the returned object, it must be valid. */
439
440    if (!Object)
441    {
442        /*
443         * Index points to uninitialized object.
444         * This means that either 1) The expected argument was
445         * not passed to the method, or 2) A local variable
446         * was referenced by the method (via the ASL)
447         * before it was initialized. Either case is an error.
448         */
449
450        /* If slack enabled, init the LocalX/ArgX to an Integer of value zero */
451
452        if (AcpiGbl_EnableInterpreterSlack)
453        {
454            Object = AcpiUtCreateIntegerObject ((UINT64) 0);
455            if (!Object)
456            {
457                return_ACPI_STATUS (AE_NO_MEMORY);
458            }
459
460            Node->Object = Object;
461        }
462
463        /* Otherwise, return the error */
464
465        else switch (Type)
466        {
467        case ACPI_REFCLASS_ARG:
468
469            ACPI_ERROR ((AE_INFO,
470                "Uninitialized Arg[%u] at node %p",
471                Index, Node));
472
473            return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
474
475        case ACPI_REFCLASS_LOCAL:
476            /*
477             * No error message for this case, will be trapped again later to
478             * detect and ignore cases of Store(LocalX,LocalX)
479             */
480            return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
481
482        default:
483
484            ACPI_ERROR ((AE_INFO, "Not a Arg/Local opcode: 0x%X", Type));
485            return_ACPI_STATUS (AE_AML_INTERNAL);
486        }
487    }
488
489    /*
490     * The Index points to an initialized and valid object.
491     * Return an additional reference to the object
492     */
493    *DestDesc = Object;
494    AcpiUtAddReference (Object);
495
496    return_ACPI_STATUS (AE_OK);
497}
498
499
500/*******************************************************************************
501 *
502 * FUNCTION:    AcpiDsMethodDataDeleteValue
503 *
504 * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
505 *                                    ACPI_REFCLASS_ARG
506 *              Index               - Which localVar or argument to delete
507 *              WalkState           - Current walk state object
508 *
509 * RETURN:      None
510 *
511 * DESCRIPTION: Delete the entry at Opcode:Index. Inserts
512 *              a null into the stack slot after the object is deleted.
513 *
514 ******************************************************************************/
515
516static void
517AcpiDsMethodDataDeleteValue (
518    UINT8                   Type,
519    UINT32                  Index,
520    ACPI_WALK_STATE         *WalkState)
521{
522    ACPI_STATUS             Status;
523    ACPI_NAMESPACE_NODE     *Node;
524    ACPI_OPERAND_OBJECT     *Object;
525
526
527    ACPI_FUNCTION_TRACE (DsMethodDataDeleteValue);
528
529
530    /* Get the namespace node for the arg/local */
531
532    Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
533    if (ACPI_FAILURE (Status))
534    {
535        return_VOID;
536    }
537
538    /* Get the associated object */
539
540    Object = AcpiNsGetAttachedObject (Node);
541
542    /*
543     * Undefine the Arg or Local by setting its descriptor
544     * pointer to NULL. Locals/Args can contain both
545     * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
546     */
547    Node->Object = NULL;
548
549    if ((Object) &&
550        (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_OPERAND))
551    {
552        /*
553         * There is a valid object.
554         * Decrement the reference count by one to balance the
555         * increment when the object was stored.
556         */
557        AcpiUtRemoveReference (Object);
558    }
559
560    return_VOID;
561}
562
563
564/*******************************************************************************
565 *
566 * FUNCTION:    AcpiDsStoreObjectToLocal
567 *
568 * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
569 *                                    ACPI_REFCLASS_ARG
570 *              Index               - Which Local or Arg to set
571 *              ObjDesc             - Value to be stored
572 *              WalkState           - Current walk state
573 *
574 * RETURN:      Status
575 *
576 * DESCRIPTION: Store a value in an Arg or Local. The ObjDesc is installed
577 *              as the new value for the Arg or Local and the reference count
578 *              for ObjDesc is incremented.
579 *
580 ******************************************************************************/
581
582ACPI_STATUS
583AcpiDsStoreObjectToLocal (
584    UINT8                   Type,
585    UINT32                  Index,
586    ACPI_OPERAND_OBJECT     *ObjDesc,
587    ACPI_WALK_STATE         *WalkState)
588{
589    ACPI_STATUS             Status;
590    ACPI_NAMESPACE_NODE     *Node;
591    ACPI_OPERAND_OBJECT     *CurrentObjDesc;
592    ACPI_OPERAND_OBJECT     *NewObjDesc;
593
594
595    ACPI_FUNCTION_TRACE (DsStoreObjectToLocal);
596    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Type=%2.2X Index=%u Obj=%p\n",
597        Type, Index, ObjDesc));
598
599    /* Parameter validation */
600
601    if (!ObjDesc)
602    {
603        return_ACPI_STATUS (AE_BAD_PARAMETER);
604    }
605
606    /* Get the namespace node for the arg/local */
607
608    Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
609    if (ACPI_FAILURE (Status))
610    {
611        return_ACPI_STATUS (Status);
612    }
613
614    CurrentObjDesc = AcpiNsGetAttachedObject (Node);
615    if (CurrentObjDesc == ObjDesc)
616    {
617        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
618            ObjDesc));
619        return_ACPI_STATUS (Status);
620    }
621
622    /*
623     * If the reference count on the object is more than one, we must
624     * take a copy of the object before we store. A reference count
625     * of exactly 1 means that the object was just created during the
626     * evaluation of an expression, and we can safely use it since it
627     * is not used anywhere else.
628     */
629    NewObjDesc = ObjDesc;
630    if (ObjDesc->Common.ReferenceCount > 1)
631    {
632        Status = AcpiUtCopyIobjectToIobject (ObjDesc, &NewObjDesc, WalkState);
633        if (ACPI_FAILURE (Status))
634        {
635            return_ACPI_STATUS (Status);
636        }
637    }
638
639    /*
640     * If there is an object already in this slot, we either
641     * have to delete it, or if this is an argument and there
642     * is an object reference stored there, we have to do
643     * an indirect store!
644     */
645    if (CurrentObjDesc)
646    {
647        /*
648         * Check for an indirect store if an argument
649         * contains an object reference (stored as an Node).
650         * We don't allow this automatic dereferencing for
651         * locals, since a store to a local should overwrite
652         * anything there, including an object reference.
653         *
654         * If both Arg0 and Local0 contain RefOf (Local4):
655         *
656         * Store (1, Arg0)             - Causes indirect store to local4
657         * Store (1, Local0)           - Stores 1 in local0, overwriting
658         *                                  the reference to local4
659         * Store (1, DeRefof (Local0)) - Causes indirect store to local4
660         *
661         * Weird, but true.
662         */
663        if (Type == ACPI_REFCLASS_ARG)
664        {
665            /*
666             * If we have a valid reference object that came from RefOf(),
667             * do the indirect store
668             */
669            if ((ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) == ACPI_DESC_TYPE_OPERAND) &&
670                (CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
671                (CurrentObjDesc->Reference.Class == ACPI_REFCLASS_REFOF))
672            {
673                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
674                        "Arg (%p) is an ObjRef(Node), storing in node %p\n",
675                        NewObjDesc, CurrentObjDesc));
676
677                /*
678                 * Store this object to the Node (perform the indirect store)
679                 * NOTE: No implicit conversion is performed, as per the ACPI
680                 * specification rules on storing to Locals/Args.
681                 */
682                Status = AcpiExStoreObjectToNode (NewObjDesc,
683                            CurrentObjDesc->Reference.Object, WalkState,
684                            ACPI_NO_IMPLICIT_CONVERSION);
685
686                /* Remove local reference if we copied the object above */
687
688                if (NewObjDesc != ObjDesc)
689                {
690                    AcpiUtRemoveReference (NewObjDesc);
691                }
692                return_ACPI_STATUS (Status);
693            }
694        }
695
696        /* Delete the existing object before storing the new one */
697
698        AcpiDsMethodDataDeleteValue (Type, Index, WalkState);
699    }
700
701    /*
702     * Install the Obj descriptor (*NewObjDesc) into
703     * the descriptor for the Arg or Local.
704     * (increments the object reference count by one)
705     */
706    Status = AcpiDsMethodDataSetValue (Type, Index, NewObjDesc, WalkState);
707
708    /* Remove local reference if we copied the object above */
709
710    if (NewObjDesc != ObjDesc)
711    {
712        AcpiUtRemoveReference (NewObjDesc);
713    }
714
715    return_ACPI_STATUS (Status);
716}
717
718
719#ifdef ACPI_OBSOLETE_FUNCTIONS
720/*******************************************************************************
721 *
722 * FUNCTION:    AcpiDsMethodDataGetType
723 *
724 * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
725 *              Index               - Which Local or Arg whose type to get
726 *              WalkState           - Current walk state object
727 *
728 * RETURN:      Data type of current value of the selected Arg or Local
729 *
730 * DESCRIPTION: Get the type of the object stored in the Local or Arg
731 *
732 ******************************************************************************/
733
734ACPI_OBJECT_TYPE
735AcpiDsMethodDataGetType (
736    UINT16                  Opcode,
737    UINT32                  Index,
738    ACPI_WALK_STATE         *WalkState)
739{
740    ACPI_STATUS             Status;
741    ACPI_NAMESPACE_NODE     *Node;
742    ACPI_OPERAND_OBJECT     *Object;
743
744
745    ACPI_FUNCTION_TRACE (DsMethodDataGetType);
746
747
748    /* Get the namespace node for the arg/local */
749
750    Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
751    if (ACPI_FAILURE (Status))
752    {
753        return_VALUE ((ACPI_TYPE_NOT_FOUND));
754    }
755
756    /* Get the object */
757
758    Object = AcpiNsGetAttachedObject (Node);
759    if (!Object)
760    {
761        /* Uninitialized local/arg, return TYPE_ANY */
762
763        return_VALUE (ACPI_TYPE_ANY);
764    }
765
766    /* Get the object type */
767
768    return_VALUE (Object->Type);
769}
770#endif
771