1 /******************************************************************************
3 * Module Name: dswload - Dispatcher first pass namespace load callbacks
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************
116 * Alternatively, you may choose to be licensed under the terms of the
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
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.
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.
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.
150 *****************************************************************************/
153 #include "accommon.h"
154 #include "acparser.h"
156 #include "acdispat.h"
157 #include "acinterp.h"
158 #include "acnamesp.h"
160 #ifdef ACPI_ASL_COMPILER
161 #include "acdisasm.h"
164 #define _COMPONENT ACPI_DISPATCHER
165 ACPI_MODULE_NAME ("dswload")
168 /*******************************************************************************
170 * FUNCTION: AcpiDsInitCallbacks
172 * PARAMETERS: WalkState - Current state of the parse tree walk
173 * PassNumber - 1, 2, or 3
177 * DESCRIPTION: Init walk state callbacks
179 ******************************************************************************/
182 AcpiDsInitCallbacks (
183 ACPI_WALK_STATE
*WalkState
,
191 /* Parse only - caller will setup callbacks */
193 WalkState
->ParseFlags
= ACPI_PARSE_LOAD_PASS1
|
194 ACPI_PARSE_DELETE_TREE
|
195 ACPI_PARSE_DISASSEMBLE
;
196 WalkState
->DescendingCallback
= NULL
;
197 WalkState
->AscendingCallback
= NULL
;
204 WalkState
->ParseFlags
= ACPI_PARSE_LOAD_PASS1
|
205 ACPI_PARSE_DELETE_TREE
;
206 WalkState
->DescendingCallback
= AcpiDsLoad1BeginOp
;
207 WalkState
->AscendingCallback
= AcpiDsLoad1EndOp
;
214 WalkState
->ParseFlags
= ACPI_PARSE_LOAD_PASS1
|
215 ACPI_PARSE_DELETE_TREE
;
216 WalkState
->DescendingCallback
= AcpiDsLoad2BeginOp
;
217 WalkState
->AscendingCallback
= AcpiDsLoad2EndOp
;
224 WalkState
->ParseFlags
|= ACPI_PARSE_EXECUTE
|
225 ACPI_PARSE_DELETE_TREE
;
226 WalkState
->DescendingCallback
= AcpiDsExecBeginOp
;
227 WalkState
->AscendingCallback
= AcpiDsExecEndOp
;
232 return (AE_BAD_PARAMETER
);
239 /*******************************************************************************
241 * FUNCTION: AcpiDsLoad1BeginOp
243 * PARAMETERS: WalkState - Current state of the parse tree walk
244 * OutOp - Where to return op if a new one is created
248 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
250 ******************************************************************************/
254 ACPI_WALK_STATE
*WalkState
,
255 ACPI_PARSE_OBJECT
**OutOp
)
257 ACPI_PARSE_OBJECT
*Op
;
258 ACPI_NAMESPACE_NODE
*Node
;
260 ACPI_OBJECT_TYPE ObjectType
;
265 ACPI_FUNCTION_TRACE_PTR (DsLoad1BeginOp
, WalkState
->Op
);
269 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
, "Op=%p State=%p\n", Op
, WalkState
));
271 /* We are only interested in opcodes that have an associated name */
275 if (!(WalkState
->OpInfo
->Flags
& AML_NAMED
))
278 return_ACPI_STATUS (AE_OK
);
281 /* Check if this object has already been installed in the namespace */
286 return_ACPI_STATUS (AE_OK
);
290 Path
= AcpiPsGetNextNamestring (&WalkState
->ParserState
);
292 /* Map the raw opcode into an internal object type */
294 ObjectType
= WalkState
->OpInfo
->ObjectType
;
296 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
,
297 "State=%p Op=%p [%s]\n", WalkState
, Op
,
298 AcpiUtGetTypeName (ObjectType
)));
300 switch (WalkState
->Opcode
)
304 * The target name of the Scope() operator must exist at this point so
305 * that we can actually open the scope to enter new names underneath it.
306 * Allow search-to-root for single namesegs.
308 Status
= AcpiNsLookup (WalkState
->ScopeInfo
, Path
, ObjectType
,
309 ACPI_IMODE_EXECUTE
, ACPI_NS_SEARCH_PARENT
, WalkState
, &(Node
));
310 #ifdef ACPI_ASL_COMPILER
311 if (Status
== AE_NOT_FOUND
)
315 * Target of Scope() not found. Generate an External for it, and
316 * insert the name into the namespace.
318 AcpiDmAddOpToExternalList (Op
, Path
, ACPI_TYPE_DEVICE
, 0, 0);
319 Status
= AcpiNsLookup (WalkState
->ScopeInfo
, Path
, ObjectType
,
320 ACPI_IMODE_LOAD_PASS1
, ACPI_NS_SEARCH_PARENT
,
324 if (ACPI_FAILURE (Status
))
326 ACPI_ERROR_NAMESPACE (WalkState
->ScopeInfo
, Path
, Status
);
327 return_ACPI_STATUS (Status
);
331 * Check to make sure that the target is
332 * one of the opcodes that actually opens a scope
337 case ACPI_TYPE_LOCAL_SCOPE
: /* Scope */
338 case ACPI_TYPE_DEVICE
:
339 case ACPI_TYPE_POWER
:
340 case ACPI_TYPE_PROCESSOR
:
341 case ACPI_TYPE_THERMAL
:
343 /* These are acceptable types */
346 case ACPI_TYPE_INTEGER
:
347 case ACPI_TYPE_STRING
:
348 case ACPI_TYPE_BUFFER
:
350 * These types we will allow, but we will change the type.
351 * This enables some existing code of the form:
354 * Scope (DEB) { ... }
356 * Note: silently change the type here. On the second pass,
357 * we will report a warning
359 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
,
360 "Type override - [%4.4s] had invalid type (%s) "
361 "for Scope operator, changed to type ANY\n",
362 AcpiUtGetNodeName (Node
), AcpiUtGetTypeName (Node
->Type
)));
364 Node
->Type
= ACPI_TYPE_ANY
;
365 WalkState
->ScopeInfo
->Common
.Value
= ACPI_TYPE_ANY
;
368 case ACPI_TYPE_METHOD
:
370 * Allow scope change to root during execution of module-level
371 * code. Root is typed METHOD during this time.
373 if ((Node
== AcpiGbl_RootNode
) &&
374 (WalkState
->ParseFlags
& ACPI_PARSE_MODULE_LEVEL
))
379 /*lint -fallthrough */
383 /* All other types are an error */
385 ACPI_ERROR ((AE_INFO
,
386 "Invalid type (%s) for target of "
387 "Scope operator [%4.4s] (Cannot override)",
388 AcpiUtGetTypeName (Node
->Type
), AcpiUtGetNodeName (Node
)));
390 return_ACPI_STATUS (AE_AML_OPERAND_TYPE
);
396 * For all other named opcodes, we will enter the name into
399 * Setup the search flags.
400 * Since we are entering a name into the namespace, we do not want to
401 * enable the search-to-root upsearch.
403 * There are only two conditions where it is acceptable that the name
405 * 1) the Scope() operator can reopen a scoping object that was
406 * previously defined (Scope, Method, Device, etc.)
407 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
408 * BufferField, or Package), the name of the object is already
411 if (WalkState
->DeferredNode
)
413 /* This name is already in the namespace, get the node */
415 Node
= WalkState
->DeferredNode
;
421 * If we are executing a method, do not create any namespace objects
422 * during the load phase, only during execution.
424 if (WalkState
->MethodNode
)
431 Flags
= ACPI_NS_NO_UPSEARCH
;
432 if ((WalkState
->Opcode
!= AML_SCOPE_OP
) &&
433 (!(WalkState
->ParseFlags
& ACPI_PARSE_DEFERRED_OP
)))
435 if (WalkState
->NamespaceOverride
)
437 Flags
|= ACPI_NS_OVERRIDE_IF_FOUND
;
438 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
, "[%s] Override allowed\n",
439 AcpiUtGetTypeName (ObjectType
)));
443 Flags
|= ACPI_NS_ERROR_IF_FOUND
;
444 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
, "[%s] Cannot already exist\n",
445 AcpiUtGetTypeName (ObjectType
)));
450 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
,
451 "[%s] Both Find or Create allowed\n",
452 AcpiUtGetTypeName (ObjectType
)));
456 * Enter the named type into the internal namespace. We enter the name
457 * as we go downward in the parse tree. Any necessary subobjects that
458 * involve arguments to the opcode must be created as we go back up the
461 Status
= AcpiNsLookup (WalkState
->ScopeInfo
, Path
, ObjectType
,
462 ACPI_IMODE_LOAD_PASS1
, Flags
, WalkState
, &Node
);
463 if (ACPI_FAILURE (Status
))
465 if (Status
== AE_ALREADY_EXISTS
)
467 /* The name already exists in this scope */
469 if (Node
->Flags
& ANOBJ_IS_EXTERNAL
)
472 * Allow one create on an object or segment that was
473 * previously declared External
475 Node
->Flags
&= ~ANOBJ_IS_EXTERNAL
;
476 Node
->Type
= (UINT8
) ObjectType
;
478 /* Just retyped a node, probably will need to open a scope */
480 if (AcpiNsOpensScope (ObjectType
))
482 Status
= AcpiDsScopeStackPush (
483 Node
, ObjectType
, WalkState
);
484 if (ACPI_FAILURE (Status
))
486 return_ACPI_STATUS (Status
);
494 if (ACPI_FAILURE (Status
))
496 ACPI_ERROR_NAMESPACE (WalkState
->ScopeInfo
, Path
, Status
);
497 return_ACPI_STATUS (Status
);
507 /* Create a new op */
509 Op
= AcpiPsAllocOp (WalkState
->Opcode
, WalkState
->Aml
);
512 return_ACPI_STATUS (AE_NO_MEMORY
);
516 /* Initialize the op */
518 #ifdef ACPI_CONSTANT_EVAL_ONLY
519 Op
->Named
.Path
= Path
;
525 * Put the Node in the "op" object that the parser uses, so we
526 * can get it again quickly when this scope is closed
528 Op
->Common
.Node
= Node
;
529 Op
->Named
.Name
= Node
->Name
.Integer
;
532 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState
->ParserState
), Op
);
534 return_ACPI_STATUS (Status
);
538 /*******************************************************************************
540 * FUNCTION: AcpiDsLoad1EndOp
542 * PARAMETERS: WalkState - Current state of the parse tree walk
546 * DESCRIPTION: Ascending callback used during the loading of the namespace,
547 * both control methods and everything else.
549 ******************************************************************************/
553 ACPI_WALK_STATE
*WalkState
)
555 ACPI_PARSE_OBJECT
*Op
;
556 ACPI_OBJECT_TYPE ObjectType
;
557 ACPI_STATUS Status
= AE_OK
;
559 #ifdef ACPI_ASL_COMPILER
564 ACPI_FUNCTION_TRACE (DsLoad1EndOp
);
568 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
, "Op=%p State=%p\n", Op
, WalkState
));
570 /* We are only interested in opcodes that have an associated name */
572 if (!(WalkState
->OpInfo
->Flags
& (AML_NAMED
| AML_FIELD
)))
574 return_ACPI_STATUS (AE_OK
);
577 /* Get the object type to determine if we should pop the scope */
579 ObjectType
= WalkState
->OpInfo
->ObjectType
;
581 if (WalkState
->OpInfo
->Flags
& AML_FIELD
)
584 * If we are executing a method, do not create any namespace objects
585 * during the load phase, only during execution.
587 if (!WalkState
->MethodNode
)
589 if (WalkState
->Opcode
== AML_FIELD_OP
||
590 WalkState
->Opcode
== AML_BANK_FIELD_OP
||
591 WalkState
->Opcode
== AML_INDEX_FIELD_OP
)
593 Status
= AcpiDsInitFieldObjects (Op
, WalkState
);
596 return_ACPI_STATUS (Status
);
600 * If we are executing a method, do not create any namespace objects
601 * during the load phase, only during execution.
603 if (!WalkState
->MethodNode
)
605 if (Op
->Common
.AmlOpcode
== AML_REGION_OP
)
607 Status
= AcpiExCreateRegion (Op
->Named
.Data
, Op
->Named
.Length
,
608 (ACPI_ADR_SPACE_TYPE
)
609 ((Op
->Common
.Value
.Arg
)->Common
.Value
.Integer
),
611 if (ACPI_FAILURE (Status
))
613 return_ACPI_STATUS (Status
);
616 else if (Op
->Common
.AmlOpcode
== AML_DATA_REGION_OP
)
618 Status
= AcpiExCreateRegion (Op
->Named
.Data
, Op
->Named
.Length
,
619 ACPI_ADR_SPACE_DATA_TABLE
, WalkState
);
620 if (ACPI_FAILURE (Status
))
622 return_ACPI_STATUS (Status
);
627 if (Op
->Common
.AmlOpcode
== AML_NAME_OP
)
629 /* For Name opcode, get the object type from the argument */
631 if (Op
->Common
.Value
.Arg
)
633 ObjectType
= (AcpiPsGetOpcodeInfo (
634 (Op
->Common
.Value
.Arg
)->Common
.AmlOpcode
))->ObjectType
;
636 /* Set node type if we have a namespace node */
640 Op
->Common
.Node
->Type
= (UINT8
) ObjectType
;
645 #ifdef ACPI_ASL_COMPILER
647 * For external opcode, get the object type from the argument and
648 * get the parameter count from the argument's next.
650 if (AcpiGbl_DisasmFlag
&&
652 Op
->Common
.AmlOpcode
== AML_EXTERNAL_OP
)
655 * Note, if this external is not a method
656 * Op->Common.Value.Arg->Common.Next->Common.Value.Integer == 0
657 * Therefore, ParamCount will be 0.
659 ParamCount
= (UINT8
) Op
->Common
.Value
.Arg
->Common
.Next
->Common
.Value
.Integer
;
660 ObjectType
= (UINT8
) Op
->Common
.Value
.Arg
->Common
.Value
.Integer
;
661 Op
->Common
.Node
->Flags
|= ANOBJ_IS_EXTERNAL
;
662 Op
->Common
.Node
->Type
= (UINT8
) ObjectType
;
664 AcpiDmCreateSubobjectForExternal ((UINT8
)ObjectType
,
665 &Op
->Common
.Node
, ParamCount
);
668 * Add the external to the external list because we may be
669 * emitting code based off of the items within the external list.
671 AcpiDmAddOpToExternalList (Op
, Op
->Named
.Path
, (UINT8
)ObjectType
, ParamCount
,
672 ACPI_EXT_ORIGIN_FROM_OPCODE
| ACPI_EXT_RESOLVED_REFERENCE
);
677 * If we are executing a method, do not create any namespace objects
678 * during the load phase, only during execution.
680 if (!WalkState
->MethodNode
)
682 if (Op
->Common
.AmlOpcode
== AML_METHOD_OP
)
685 * MethodOp PkgLength NameString MethodFlags TermList
687 * Note: We must create the method node/object pair as soon as we
688 * see the method declaration. This allows later pass1 parsing
689 * of invocations of the method (need to know the number of
692 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
,
693 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
694 WalkState
, Op
, Op
->Named
.Node
));
696 if (!AcpiNsGetAttachedObject (Op
->Named
.Node
))
698 WalkState
->Operands
[0] = ACPI_CAST_PTR (void, Op
->Named
.Node
);
699 WalkState
->NumOperands
= 1;
701 Status
= AcpiDsCreateOperands (
702 WalkState
, Op
->Common
.Value
.Arg
);
703 if (ACPI_SUCCESS (Status
))
705 Status
= AcpiExCreateMethod (Op
->Named
.Data
,
706 Op
->Named
.Length
, WalkState
);
709 WalkState
->Operands
[0] = NULL
;
710 WalkState
->NumOperands
= 0;
712 if (ACPI_FAILURE (Status
))
714 return_ACPI_STATUS (Status
);
720 /* Pop the scope stack (only if loading a table) */
722 if (!WalkState
->MethodNode
&&
723 Op
->Common
.AmlOpcode
!= AML_EXTERNAL_OP
&&
724 AcpiNsOpensScope (ObjectType
))
726 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH
, "(%s): Popping scope for Op %p\n",
727 AcpiUtGetTypeName (ObjectType
), Op
));
729 Status
= AcpiDsScopeStackPop (WalkState
);
732 return_ACPI_STATUS (Status
);