1/******************************************************************************
2 *
3 * Module Name: dsobject - Dispatcher object management routines
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 *    notice, this list of conditions, and the following disclaimer,
124 *    without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 *    substantially similar to the "NO WARRANTY" disclaimer below
127 *    ("Disclaimer") and any redistribution must be conditioned upon
128 *    including a substantially similar Disclaimer requirement for further
129 *    binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 *    of any contributors may be used to endorse or promote products derived
132 *    from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152#include "acpi.h"
153#include "accommon.h"
154#include "acparser.h"
155#include "amlcode.h"
156#include "acdispat.h"
157#include "acnamesp.h"
158#include "acinterp.h"
159
160#define _COMPONENT          ACPI_DISPATCHER
161        ACPI_MODULE_NAME    ("dsobject")
162
163
164/*******************************************************************************
165 *
166 * FUNCTION:    AcpiDsBuildInternalObject
167 *
168 * PARAMETERS:  WalkState       - Current walk state
169 *              Op              - Parser object to be translated
170 *              ObjDescPtr      - Where the ACPI internal object is returned
171 *
172 * RETURN:      Status
173 *
174 * DESCRIPTION: Translate a parser Op object to the equivalent namespace object
175 *              Simple objects are any objects other than a package object!
176 *
177 ******************************************************************************/
178
179ACPI_STATUS
180AcpiDsBuildInternalObject (
181    ACPI_WALK_STATE         *WalkState,
182    ACPI_PARSE_OBJECT       *Op,
183    ACPI_OPERAND_OBJECT     **ObjDescPtr)
184{
185    ACPI_OPERAND_OBJECT     *ObjDesc;
186    ACPI_STATUS             Status;
187
188
189    ACPI_FUNCTION_TRACE (DsBuildInternalObject);
190
191
192    *ObjDescPtr = NULL;
193    if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
194    {
195        /*
196         * This is a named object reference. If this name was
197         * previously looked up in the namespace, it was stored in
198         * this op. Otherwise, go ahead and look it up now
199         */
200        if (!Op->Common.Node)
201        {
202            /* Check if we are resolving a named reference within a package */
203
204            if ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
205                (Op->Common.Parent->Common.AmlOpcode == AML_VARIABLE_PACKAGE_OP))
206            {
207                /*
208                 * We won't resolve package elements here, we will do this
209                 * after all ACPI tables are loaded into the namespace. This
210                 * behavior supports both forward references to named objects
211                 * and external references to objects in other tables.
212                 */
213                goto CreateNewObject;
214            }
215            else
216            {
217                Status = AcpiNsLookup (WalkState->ScopeInfo,
218                    Op->Common.Value.String,
219                    ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
220                    ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
221                    ACPI_CAST_INDIRECT_PTR (
222                        ACPI_NAMESPACE_NODE, &(Op->Common.Node)));
223                if (ACPI_FAILURE (Status))
224                {
225                    ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
226                        Op->Common.Value.String, Status);
227                    return_ACPI_STATUS (Status);
228                }
229            }
230        }
231    }
232
233CreateNewObject:
234
235    /* Create and init a new internal ACPI object */
236
237    ObjDesc = AcpiUtCreateInternalObject (
238        (AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode))->ObjectType);
239    if (!ObjDesc)
240    {
241        return_ACPI_STATUS (AE_NO_MEMORY);
242    }
243
244    Status = AcpiDsInitObjectFromOp (
245        WalkState, Op, Op->Common.AmlOpcode, &ObjDesc);
246    if (ACPI_FAILURE (Status))
247    {
248        AcpiUtRemoveReference (ObjDesc);
249        return_ACPI_STATUS (Status);
250    }
251
252    /*
253     * Handling for unresolved package reference elements.
254     * These are elements that are namepaths.
255     */
256    if ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
257        (Op->Common.Parent->Common.AmlOpcode == AML_VARIABLE_PACKAGE_OP))
258    {
259        ObjDesc->Reference.Resolved = TRUE;
260
261        if ((Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
262            !ObjDesc->Reference.Node)
263        {
264            /*
265             * Name was unresolved above.
266             * Get the prefix node for later lookup
267             */
268            ObjDesc->Reference.Node = WalkState->ScopeInfo->Scope.Node;
269            ObjDesc->Reference.Aml = Op->Common.Aml;
270            ObjDesc->Reference.Resolved = FALSE;
271        }
272    }
273
274    *ObjDescPtr = ObjDesc;
275    return_ACPI_STATUS (Status);
276}
277
278
279/*******************************************************************************
280 *
281 * FUNCTION:    AcpiDsBuildInternalBufferObj
282 *
283 * PARAMETERS:  WalkState       - Current walk state
284 *              Op              - Parser object to be translated
285 *              BufferLength    - Length of the buffer
286 *              ObjDescPtr      - Where the ACPI internal object is returned
287 *
288 * RETURN:      Status
289 *
290 * DESCRIPTION: Translate a parser Op package object to the equivalent
291 *              namespace object
292 *
293 ******************************************************************************/
294
295ACPI_STATUS
296AcpiDsBuildInternalBufferObj (
297    ACPI_WALK_STATE         *WalkState,
298    ACPI_PARSE_OBJECT       *Op,
299    UINT32                  BufferLength,
300    ACPI_OPERAND_OBJECT     **ObjDescPtr)
301{
302    ACPI_PARSE_OBJECT       *Arg;
303    ACPI_OPERAND_OBJECT     *ObjDesc;
304    ACPI_PARSE_OBJECT       *ByteList;
305    UINT32                  ByteListLength = 0;
306
307
308    ACPI_FUNCTION_TRACE (DsBuildInternalBufferObj);
309
310
311    /*
312     * If we are evaluating a Named buffer object "Name (xxxx, Buffer)".
313     * The buffer object already exists (from the NS node), otherwise it must
314     * be created.
315     */
316    ObjDesc = *ObjDescPtr;
317    if (!ObjDesc)
318    {
319        /* Create a new buffer object */
320
321        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
322        *ObjDescPtr = ObjDesc;
323        if (!ObjDesc)
324        {
325            return_ACPI_STATUS (AE_NO_MEMORY);
326        }
327    }
328
329    /*
330     * Second arg is the buffer data (optional) ByteList can be either
331     * individual bytes or a string initializer. In either case, a
332     * ByteList appears in the AML.
333     */
334    Arg = Op->Common.Value.Arg;         /* skip first arg */
335
336    ByteList = Arg->Named.Next;
337    if (ByteList)
338    {
339        if (ByteList->Common.AmlOpcode != AML_INT_BYTELIST_OP)
340        {
341            ACPI_ERROR ((AE_INFO,
342                "Expecting bytelist, found AML opcode 0x%X in op %p",
343                ByteList->Common.AmlOpcode, ByteList));
344
345            AcpiUtRemoveReference (ObjDesc);
346            return (AE_TYPE);
347        }
348
349        ByteListLength = (UINT32) ByteList->Common.Value.Integer;
350    }
351
352    /*
353     * The buffer length (number of bytes) will be the larger of:
354     * 1) The specified buffer length and
355     * 2) The length of the initializer byte list
356     */
357    ObjDesc->Buffer.Length = BufferLength;
358    if (ByteListLength > BufferLength)
359    {
360        ObjDesc->Buffer.Length = ByteListLength;
361    }
362
363    /* Allocate the buffer */
364
365    if (ObjDesc->Buffer.Length == 0)
366    {
367        ObjDesc->Buffer.Pointer = NULL;
368        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
369            "Buffer defined with zero length in AML, creating\n"));
370    }
371    else
372    {
373        ObjDesc->Buffer.Pointer =
374            ACPI_ALLOCATE_ZEROED (ObjDesc->Buffer.Length);
375        if (!ObjDesc->Buffer.Pointer)
376        {
377            AcpiUtDeleteObjectDesc (ObjDesc);
378            return_ACPI_STATUS (AE_NO_MEMORY);
379        }
380
381        /* Initialize buffer from the ByteList (if present) */
382
383        if (ByteList)
384        {
385            memcpy (ObjDesc->Buffer.Pointer, ByteList->Named.Data,
386                ByteListLength);
387        }
388    }
389
390    ObjDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
391    Op->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjDesc);
392    return_ACPI_STATUS (AE_OK);
393}
394
395/*******************************************************************************
396 *
397 * FUNCTION:    AcpiDsCreateNode
398 *
399 * PARAMETERS:  WalkState       - Current walk state
400 *              Node            - NS Node to be initialized
401 *              Op              - Parser object to be translated
402 *
403 * RETURN:      Status
404 *
405 * DESCRIPTION: Create the object to be associated with a namespace node
406 *
407 ******************************************************************************/
408
409ACPI_STATUS
410AcpiDsCreateNode (
411    ACPI_WALK_STATE         *WalkState,
412    ACPI_NAMESPACE_NODE     *Node,
413    ACPI_PARSE_OBJECT       *Op)
414{
415    ACPI_STATUS             Status;
416    ACPI_OPERAND_OBJECT     *ObjDesc;
417
418
419    ACPI_FUNCTION_TRACE_PTR (DsCreateNode, Op);
420
421
422    /*
423     * Because of the execution pass through the non-control-method
424     * parts of the table, we can arrive here twice. Only init
425     * the named object node the first time through
426     */
427    if (AcpiNsGetAttachedObject (Node))
428    {
429        return_ACPI_STATUS (AE_OK);
430    }
431
432    if (!Op->Common.Value.Arg)
433    {
434        /* No arguments, there is nothing to do */
435
436        return_ACPI_STATUS (AE_OK);
437    }
438
439    /* Build an internal object for the argument(s) */
440
441    Status = AcpiDsBuildInternalObject (
442        WalkState, Op->Common.Value.Arg, &ObjDesc);
443    if (ACPI_FAILURE (Status))
444    {
445        return_ACPI_STATUS (Status);
446    }
447
448    /* Re-type the object according to its argument */
449
450    Node->Type = ObjDesc->Common.Type;
451
452    /* Attach obj to node */
453
454    Status = AcpiNsAttachObject (Node, ObjDesc, Node->Type);
455
456    /* Remove local reference to the object */
457
458    AcpiUtRemoveReference (ObjDesc);
459    return_ACPI_STATUS (Status);
460}
461
462
463
464/*******************************************************************************
465 *
466 * FUNCTION:    AcpiDsInitObjectFromOp
467 *
468 * PARAMETERS:  WalkState       - Current walk state
469 *              Op              - Parser op used to init the internal object
470 *              Opcode          - AML opcode associated with the object
471 *              RetObjDesc      - Namespace object to be initialized
472 *
473 * RETURN:      Status
474 *
475 * DESCRIPTION: Initialize a namespace object from a parser Op and its
476 *              associated arguments. The namespace object is a more compact
477 *              representation of the Op and its arguments.
478 *
479 ******************************************************************************/
480
481ACPI_STATUS
482AcpiDsInitObjectFromOp (
483    ACPI_WALK_STATE         *WalkState,
484    ACPI_PARSE_OBJECT       *Op,
485    UINT16                  Opcode,
486    ACPI_OPERAND_OBJECT     **RetObjDesc)
487{
488    const ACPI_OPCODE_INFO  *OpInfo;
489    ACPI_OPERAND_OBJECT     *ObjDesc;
490    ACPI_STATUS             Status = AE_OK;
491
492
493    ACPI_FUNCTION_TRACE (DsInitObjectFromOp);
494
495
496    ObjDesc = *RetObjDesc;
497    OpInfo = AcpiPsGetOpcodeInfo (Opcode);
498    if (OpInfo->Class == AML_CLASS_UNKNOWN)
499    {
500        /* Unknown opcode */
501
502        return_ACPI_STATUS (AE_TYPE);
503    }
504
505    /* Perform per-object initialization */
506
507    switch (ObjDesc->Common.Type)
508    {
509    case ACPI_TYPE_BUFFER:
510        /*
511         * Defer evaluation of Buffer TermArg operand
512         */
513        ObjDesc->Buffer.Node = ACPI_CAST_PTR (
514            ACPI_NAMESPACE_NODE, WalkState->Operands[0]);
515        ObjDesc->Buffer.AmlStart = Op->Named.Data;
516        ObjDesc->Buffer.AmlLength = Op->Named.Length;
517        break;
518
519    case ACPI_TYPE_PACKAGE:
520        /*
521         * Defer evaluation of Package TermArg operand and all
522         * package elements. (01/2017): We defer the element
523         * resolution to allow forward references from the package
524         * in order to provide compatibility with other ACPI
525         * implementations.
526         */
527        ObjDesc->Package.Node = ACPI_CAST_PTR (
528            ACPI_NAMESPACE_NODE, WalkState->Operands[0]);
529
530        if (!Op->Named.Data)
531        {
532            return_ACPI_STATUS (AE_OK);
533        }
534
535        ObjDesc->Package.AmlStart = Op->Named.Data;
536        ObjDesc->Package.AmlLength = Op->Named.Length;
537        break;
538
539    case ACPI_TYPE_INTEGER:
540
541        switch (OpInfo->Type)
542        {
543        case AML_TYPE_CONSTANT:
544            /*
545             * Resolve AML Constants here - AND ONLY HERE!
546             * All constants are integers.
547             * We mark the integer with a flag that indicates that it started
548             * life as a constant -- so that stores to constants will perform
549             * as expected (noop). ZeroOp is used as a placeholder for optional
550             * target operands.
551             */
552            ObjDesc->Common.Flags = AOPOBJ_AML_CONSTANT;
553
554            switch (Opcode)
555            {
556            case AML_ZERO_OP:
557
558                ObjDesc->Integer.Value = 0;
559                break;
560
561            case AML_ONE_OP:
562
563                ObjDesc->Integer.Value = 1;
564                break;
565
566            case AML_ONES_OP:
567
568                ObjDesc->Integer.Value = ACPI_UINT64_MAX;
569
570                /* Truncate value if we are executing from a 32-bit ACPI table */
571
572                (void) AcpiExTruncateFor32bitTable (ObjDesc);
573                break;
574
575            case AML_REVISION_OP:
576
577                ObjDesc->Integer.Value = ACPI_CA_VERSION;
578                break;
579
580            default:
581
582                ACPI_ERROR ((AE_INFO,
583                    "Unknown constant opcode 0x%X", Opcode));
584                Status = AE_AML_OPERAND_TYPE;
585                break;
586            }
587            break;
588
589        case AML_TYPE_LITERAL:
590
591            ObjDesc->Integer.Value = Op->Common.Value.Integer;
592
593            if (AcpiExTruncateFor32bitTable (ObjDesc))
594            {
595                /* Warn if we found a 64-bit constant in a 32-bit table */
596
597                ACPI_WARNING ((AE_INFO,
598                    "Truncated 64-bit constant found in 32-bit table: %8.8X%8.8X => %8.8X",
599                    ACPI_FORMAT_UINT64 (Op->Common.Value.Integer),
600                    (UINT32) ObjDesc->Integer.Value));
601            }
602            break;
603
604        default:
605
606            ACPI_ERROR ((AE_INFO, "Unknown Integer type 0x%X",
607                OpInfo->Type));
608            Status = AE_AML_OPERAND_TYPE;
609            break;
610        }
611        break;
612
613    case ACPI_TYPE_STRING:
614
615        ObjDesc->String.Pointer = Op->Common.Value.String;
616        ObjDesc->String.Length = (UINT32) strlen (Op->Common.Value.String);
617
618        /*
619         * The string is contained in the ACPI table, don't ever try
620         * to delete it
621         */
622        ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER;
623        break;
624
625    case ACPI_TYPE_METHOD:
626        break;
627
628    case ACPI_TYPE_LOCAL_REFERENCE:
629
630        switch (OpInfo->Type)
631        {
632        case AML_TYPE_LOCAL_VARIABLE:
633
634            /* Local ID (0-7) is (AML opcode - base AML_FIRST_LOCAL_OP) */
635
636            ObjDesc->Reference.Value = ((UINT32) Opcode) - AML_FIRST_LOCAL_OP;
637            ObjDesc->Reference.Class = ACPI_REFCLASS_LOCAL;
638
639            Status = AcpiDsMethodDataGetNode (ACPI_REFCLASS_LOCAL,
640                ObjDesc->Reference.Value, WalkState,
641                ACPI_CAST_INDIRECT_PTR (ACPI_NAMESPACE_NODE,
642                    &ObjDesc->Reference.Object));
643            break;
644
645        case AML_TYPE_METHOD_ARGUMENT:
646
647            /* Arg ID (0-6) is (AML opcode - base AML_FIRST_ARG_OP) */
648
649            ObjDesc->Reference.Value = ((UINT32) Opcode) - AML_FIRST_ARG_OP;
650            ObjDesc->Reference.Class = ACPI_REFCLASS_ARG;
651
652            Status = AcpiDsMethodDataGetNode (ACPI_REFCLASS_ARG,
653                ObjDesc->Reference.Value, WalkState,
654                ACPI_CAST_INDIRECT_PTR (ACPI_NAMESPACE_NODE,
655                    &ObjDesc->Reference.Object));
656            break;
657
658        default: /* Object name or Debug object */
659
660            switch (Op->Common.AmlOpcode)
661            {
662            case AML_INT_NAMEPATH_OP:
663
664                /* Node was saved in Op */
665
666                ObjDesc->Reference.Node = Op->Common.Node;
667                ObjDesc->Reference.Class = ACPI_REFCLASS_NAME;
668                if (Op->Common.Node)
669                {
670                    ObjDesc->Reference.Object = Op->Common.Node->Object;
671                }
672                break;
673
674            case AML_DEBUG_OP:
675
676                ObjDesc->Reference.Class = ACPI_REFCLASS_DEBUG;
677                break;
678
679            default:
680
681                ACPI_ERROR ((AE_INFO,
682                    "Unimplemented reference type for AML opcode: 0x%4.4X", Opcode));
683                return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
684            }
685            break;
686        }
687        break;
688
689    default:
690
691        ACPI_ERROR ((AE_INFO, "Unimplemented data type: 0x%X",
692            ObjDesc->Common.Type));
693
694        Status = AE_AML_OPERAND_TYPE;
695        break;
696    }
697
698    return_ACPI_STATUS (Status);
699}
700