1/******************************************************************************
2 *
3 * Module Name: asllookup- Namespace lookup
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2009, 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
117#include <contrib/dev/acpica/compiler/aslcompiler.h>
118#include "aslcompiler.y.h"
119
120#include <contrib/dev/acpica/include/acparser.h>
121#include <contrib/dev/acpica/include/amlcode.h>
122#include <contrib/dev/acpica/include/acnamesp.h>
123#include <contrib/dev/acpica/include/acdispat.h>
124
125
126#define _COMPONENT ACPI_COMPILER
127 ACPI_MODULE_NAME ("asllookup")
128
129/* Local prototypes */
130
131static ACPI_STATUS
132LsCompareOneNamespaceObject (
133 ACPI_HANDLE ObjHandle,
134 UINT32 Level,
135 void *Context,
136 void **ReturnValue);
137
138static ACPI_STATUS
139LsDoOneNamespaceObject (
140 ACPI_HANDLE ObjHandle,
141 UINT32 Level,
142 void *Context,
143 void **ReturnValue);
144
145static BOOLEAN
146LkObjectExists (
147 char *Name);
148
149static void
150LkCheckFieldRange (
151 ACPI_PARSE_OBJECT *Op,
152 UINT32 RegionBitLength,
153 UINT32 FieldBitOffset,
154 UINT32 FieldBitLength,
155 UINT32 AccessBitWidth);
156
157static ACPI_STATUS
158LkNamespaceLocateBegin (
159 ACPI_PARSE_OBJECT *Op,
160 UINT32 Level,
161 void *Context);
162
163static ACPI_STATUS
164LkNamespaceLocateEnd (
165 ACPI_PARSE_OBJECT *Op,
166 UINT32 Level,
167 void *Context);
168
169static ACPI_STATUS
170LkIsObjectUsed (
171 ACPI_HANDLE ObjHandle,
172 UINT32 Level,
173 void *Context,
174 void **ReturnValue);
175
176static ACPI_STATUS
177LsDoOnePathname (
178 ACPI_HANDLE ObjHandle,
179 UINT32 Level,
180 void *Context,
181 void **ReturnValue);
182
183void
184LsSetupNsList (
185 void *Handle);
186
187ACPI_PARSE_OBJECT *
188LkGetNameOp (
189 ACPI_PARSE_OBJECT *Op);
190
191
192/*******************************************************************************
193 *
194 * FUNCTION: LsDoOneNamespaceObject
195 *
196 * PARAMETERS: ACPI_WALK_CALLBACK
197 *
198 * RETURN: Status
199 *
200 * DESCRIPTION: Dump a namespace object to the namespace output file.
201 * Called during the walk of the namespace to dump all objects.
202 *
203 ******************************************************************************/
204
205static ACPI_STATUS
206LsDoOneNamespaceObject (
207 ACPI_HANDLE ObjHandle,
208 UINT32 Level,
209 void *Context,
210 void **ReturnValue)
211{
212 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
213 ACPI_OPERAND_OBJECT *ObjDesc;
214 ACPI_PARSE_OBJECT *Op;
215
216
217 Gbl_NumNamespaceObjects++;
218
219 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "%5d [%d] %*s %4.4s - %s",
220 Gbl_NumNamespaceObjects, Level, (Level * 3), " ",
221 &Node->Name,
222 AcpiUtGetTypeName (Node->Type));
223
224 Op = Node->Op;
225 ObjDesc = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Node->Object);
226
227 if (!Op)
228 {
229 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\n");
230 return (AE_OK);
231 }
232
233
234 if ((ObjDesc) &&
235 (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) == ACPI_DESC_TYPE_OPERAND))
236 {
237 switch (Node->Type)
238 {
239 case ACPI_TYPE_INTEGER:
240
241 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
242 " [Initial Value 0x%8.8X%8.8X]",
243 ACPI_FORMAT_UINT64 (ObjDesc->Integer.Value));
244 break;
245
246
247 case ACPI_TYPE_STRING:
248
249 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
250 " [Initial Value \"%s\"]",
251 ObjDesc->String.Pointer);
252 break;
253
254 default:
255 /* Nothing to do for other types */
256 break;
257 }
258
259 }
260 else
261 {
262 switch (Node->Type)
263 {
264 case ACPI_TYPE_INTEGER:
265
266 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
267 {
268 Op = Op->Asl.Child;
269 }
270 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
271 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
272 {
273 Op = Op->Asl.Next;
274 }
275 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
276 " [Initial Value 0x%8.8X%8.8X]",
277 ACPI_FORMAT_UINT64 (Op->Asl.Value.Integer));
278 break;
279
280
281 case ACPI_TYPE_STRING:
282
283 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
284 {
285 Op = Op->Asl.Child;
286 }
287 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
288 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
289 {
290 Op = Op->Asl.Next;
291 }
292 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
293 " [Initial Value \"%s\"]",
294 Op->Asl.Value.String);
295 break;
296
297
298 case ACPI_TYPE_LOCAL_REGION_FIELD:
299
300 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
301 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
302 {
303 Op = Op->Asl.Child;
304 }
305 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
306 " [Offset 0x%04X Length 0x%04X bits]",
307 Op->Asl.Parent->Asl.ExtraValue, (UINT32) Op->Asl.Value.Integer);
308 break;
309
310
311 case ACPI_TYPE_BUFFER_FIELD:
312
313 switch (Op->Asl.ParseOpcode)
314 {
315 case PARSEOP_CREATEBYTEFIELD:
316 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [BYTE ( 8 bit)]");
317 break;
318
319 case PARSEOP_CREATEDWORDFIELD:
320 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [DWORD (32 bit)]");
321 break;
322
323 case PARSEOP_CREATEQWORDFIELD:
324 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [QWORD (64 bit)]");
325 break;
326
327 case PARSEOP_CREATEWORDFIELD:
328 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [WORD (16 bit)]");
329 break;
330
331 case PARSEOP_CREATEBITFIELD:
332 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [BIT ( 1 bit)]");
333 break;
334
335 case PARSEOP_CREATEFIELD:
336 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Arbitrary Bit Field]");
337 break;
338
339 default:
340 break;
341
342 }
343 break;
344
345
346 case ACPI_TYPE_PACKAGE:
347
348 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
349 {
350 Op = Op->Asl.Child;
351 }
352 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
353 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
354 {
355 Op = Op->Asl.Next;
356 }
357 Op = Op->Asl.Child;
358
359 if ((Op->Asl.ParseOpcode == PARSEOP_BYTECONST) ||
360 (Op->Asl.ParseOpcode == PARSEOP_RAW_DATA))
361 {
362 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
363 " [Initial Length 0x%.2X elements]",
364 Op->Asl.Value.Integer);
365 }
366 break;
367
368
369 case ACPI_TYPE_BUFFER:
370
371 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
372 {
373 Op = Op->Asl.Child;
374 }
375 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
376 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
377 {
378 Op = Op->Asl.Next;
379 }
380 Op = Op->Asl.Child;
381
382 if (Op && (Op->Asl.ParseOpcode == PARSEOP_INTEGER))
383 {
384 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
385 " [Initial Length 0x%.2X bytes]",
386 Op->Asl.Value.Integer);
387 }
388 break;
389
390
391 case ACPI_TYPE_METHOD:
392
393 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
394 " [Code Length 0x%.4X bytes]",
395 Op->Asl.AmlSubtreeLength);
396 break;
397
398
399 case ACPI_TYPE_LOCAL_RESOURCE:
400
401 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
402 " [Desc Offset 0x%.4X Bytes]", Node->Value);
403 break;
404
405
406 case ACPI_TYPE_LOCAL_RESOURCE_FIELD:
407
408 if (Node->Flags & 0x80)
409 {
410 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
411 " [Field Offset 0x%.4X Bits 0x%.4X Bytes]",
412 Node->Value, Node->Value / 8);
413 }
414 else
415 {
416 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT,
417 " [Field Offset 0x%.4X Bytes]", Node->Value);
418 }
419 break;
420
421
422 default:
423 /* Nothing to do for other types */
424 break;
425 }
426 }
427
428 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\n");
429 return (AE_OK);
430}
431
432
433/*******************************************************************************
434 *
435 * FUNCTION: LsSetupNsList
436 *
437 * PARAMETERS: Handle - local file handle
438 *
439 * RETURN: None
440 *
441 * DESCRIPTION: Set the namespace output file to the input handle
442 *
443 ******************************************************************************/
444
445void
446LsSetupNsList (
447 void *Handle)
448{
449
450 Gbl_NsOutputFlag = TRUE;
451 Gbl_Files[ASL_FILE_NAMESPACE_OUTPUT].Handle = Handle;
452}
453
454
455/*******************************************************************************
456 *
457 * FUNCTION: LsDoOnePathname
458 *
459 * PARAMETERS: ACPI_WALK_CALLBACK
460 *
461 * RETURN: Status
462 *
463 * DESCRIPTION: Print the full pathname for a namespace node.
464 *
465 ******************************************************************************/
466
467static ACPI_STATUS
468LsDoOnePathname (
469 ACPI_HANDLE ObjHandle,
470 UINT32 Level,
471 void *Context,
472 void **ReturnValue)
473{
474 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
475 ACPI_STATUS Status;
476 ACPI_BUFFER TargetPath;
477
478
479 TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
480 Status = AcpiNsHandleToPathname (Node, &TargetPath);
481 if (ACPI_FAILURE (Status))
482 {
483 return (Status);
484 }
485
486 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "%s\n", TargetPath.Pointer);
487 ACPI_FREE (TargetPath.Pointer);
488
489 return (AE_OK);
490}
491
492
493/*******************************************************************************
494 *
495 * FUNCTION: LsDisplayNamespace
496 *
497 * PARAMETERS: None
498 *
499 * RETURN: Status
500 *
501 * DESCRIPTION: Walk the namespace an display information about each node
502 * in the tree. Information is written to the optional
503 * namespace output file.
504 *
505 ******************************************************************************/
506
507ACPI_STATUS
508LsDisplayNamespace (
509 void)
510{
511 ACPI_STATUS Status;
512
513
514 if (!Gbl_NsOutputFlag)
515 {
516 return (AE_OK);
517 }
518
519 Gbl_NumNamespaceObjects = 0;
520
521 /* File header */
522
523 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Contents of ACPI Namespace\n\n");
524 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Count Depth Name - Type\n\n");
525
526 /* Walk entire namespace from the root */
527
528 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
529 ACPI_UINT32_MAX, FALSE, LsDoOneNamespaceObject,
|
| 529 ACPI_UINT32_MAX, FALSE, LsDoOneNamespaceObject, NULL, |
530 NULL, NULL);
531
532 /* Print the full pathname for each namespace node */
533
534 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\nNamespace pathnames\n\n");
535
536 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
537 ACPI_UINT32_MAX, FALSE, LsDoOnePathname,
|
| 537 ACPI_UINT32_MAX, FALSE, LsDoOnePathname, NULL, |
538 NULL, NULL);
539
540 return (Status);
541}
542
543
544/*******************************************************************************
545 *
546 * FUNCTION: LsCompareOneNamespaceObject
547 *
548 * PARAMETERS: ACPI_WALK_CALLBACK
549 *
550 * RETURN: Status
551 *
552 * DESCRIPTION: Compare name of one object.
553 *
554 ******************************************************************************/
555
556static ACPI_STATUS
557LsCompareOneNamespaceObject (
558 ACPI_HANDLE ObjHandle,
559 UINT32 Level,
560 void *Context,
561 void **ReturnValue)
562{
563 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
564
565
566 /* Simply check the name */
567
568 if (*((UINT32 *) (Context)) == Node->Name.Integer)
569 {
570 /* Abort walk if we found one instance */
571
572 return (AE_CTRL_TRUE);
573 }
574
575 return (AE_OK);
576}
577
578
579/*******************************************************************************
580 *
581 * FUNCTION: LkObjectExists
582 *
583 * PARAMETERS: Name - 4 char ACPI name
584 *
585 * RETURN: TRUE if name exists in namespace
586 *
587 * DESCRIPTION: Walk the namespace to find an object
588 *
589 ******************************************************************************/
590
591static BOOLEAN
592LkObjectExists (
593 char *Name)
594{
595 ACPI_STATUS Status;
596
597
598 /* Walk entire namespace from the supplied root */
599
600 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
601 ACPI_UINT32_MAX, FALSE, LsCompareOneNamespaceObject,
|
| 601 ACPI_UINT32_MAX, FALSE, LsCompareOneNamespaceObject, NULL, |
602 Name, NULL);
603 if (Status == AE_CTRL_TRUE)
604 {
605 /* At least one instance of the name was found */
606
607 return (TRUE);
608 }
609
610 return (FALSE);
611}
612
613
614/*******************************************************************************
615 *
616 * FUNCTION: LkGetNameOp
617 *
618 * PARAMETERS: Op - Current Op
619 *
620 * RETURN: NameOp associated with the input op
621 *
622 * DESCRIPTION: Find the name declaration op associated with the operator
623 *
624 ******************************************************************************/
625
626ACPI_PARSE_OBJECT *
627LkGetNameOp (
628 ACPI_PARSE_OBJECT *Op)
629{
630 const ACPI_OPCODE_INFO *OpInfo;
631 ACPI_PARSE_OBJECT *NameOp = Op;
632
633
634 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
635
636
637 /* Get the NamePath from the appropriate place */
638
639 if (OpInfo->Flags & AML_NAMED)
640 {
641 /* For nearly all NAMED operators, the name reference is the first child */
642
643 NameOp = Op->Asl.Child;
644 if (Op->Asl.AmlOpcode == AML_ALIAS_OP)
645 {
646 /*
647 * ALIAS is the only oddball opcode, the name declaration
648 * (alias name) is the second operand
649 */
650 NameOp = Op->Asl.Child->Asl.Next;
651 }
652 }
653 else if (OpInfo->Flags & AML_CREATE)
654 {
655 /* Name must appear as the last parameter */
656
657 NameOp = Op->Asl.Child;
658 while (!(NameOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION))
659 {
660 NameOp = NameOp->Asl.Next;
661 }
662 }
663
664 return (NameOp);
665}
666
667
668/*******************************************************************************
669 *
670 * FUNCTION: LkIsObjectUsed
671 *
672 * PARAMETERS: ACPI_WALK_CALLBACK
673 *
674 * RETURN: Status
675 *
676 * DESCRIPTION: Check for an unreferenced namespace object and emit a warning.
677 * We have to be careful, because some types and names are
678 * typically or always unreferenced, we don't want to issue
679 * excessive warnings.
680 *
681 ******************************************************************************/
682
683static ACPI_STATUS
684LkIsObjectUsed (
685 ACPI_HANDLE ObjHandle,
686 UINT32 Level,
687 void *Context,
688 void **ReturnValue)
689{
690 ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
691
692
693 /* Referenced flag is set during the namespace xref */
694
695 if (Node->Flags & ANOBJ_IS_REFERENCED)
696 {
697 return (AE_OK);
698 }
699
700 /*
701 * Ignore names that start with an underscore,
702 * these are the reserved ACPI names and are typically not referenced,
703 * they are called by the host OS.
704 */
705 if (Node->Name.Ascii[0] == '_')
706 {
707 return (AE_OK);
708 }
709
710 /* There are some types that are typically not referenced, ignore them */
711
712 switch (Node->Type)
713 {
714 case ACPI_TYPE_DEVICE:
715 case ACPI_TYPE_PROCESSOR:
716 case ACPI_TYPE_POWER:
717 case ACPI_TYPE_LOCAL_RESOURCE:
718 return (AE_OK);
719
720 default:
721 break;
722 }
723
724 /* All others are valid unreferenced namespace objects */
725
726 if (Node->Op)
727 {
728 AslError (ASL_WARNING2, ASL_MSG_NOT_REFERENCED, LkGetNameOp (Node->Op), NULL);
729 }
730 return (AE_OK);
731}
732
733
734/*******************************************************************************
735 *
736 * FUNCTION: LkFindUnreferencedObjects
737 *
738 * PARAMETERS: None
739 *
740 * RETURN: None
741 *
742 * DESCRIPTION: Namespace walk to find objects that are not referenced in any
743 * way. Must be called after the namespace has been cross
744 * referenced.
745 *
746 ******************************************************************************/
747
748void
749LkFindUnreferencedObjects (
750 void)
751{
752
753 /* Walk entire namespace from the supplied root */
754
755 (void) AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
756 ACPI_UINT32_MAX, FALSE, LkIsObjectUsed,
|
| 756 ACPI_UINT32_MAX, FALSE, LkIsObjectUsed, NULL, |
757 NULL, NULL);
758}
759
760
761/*******************************************************************************
762 *
763 * FUNCTION: LkCrossReferenceNamespace
764 *
765 * PARAMETERS: None
766 *
767 * RETURN: Status
768 *
769 * DESCRIPTION: Perform a cross reference check of the parse tree against the
770 * namespace. Every named referenced within the parse tree
771 * should be get resolved with a namespace lookup. If not, the
772 * original reference in the ASL code is invalid -- i.e., refers
773 * to a non-existent object.
774 *
775 * NOTE: The ASL "External" operator causes the name to be inserted into the
776 * namespace so that references to the external name will be resolved
777 * correctly here.
778 *
779 ******************************************************************************/
780
781ACPI_STATUS
782LkCrossReferenceNamespace (
783 void)
784{
785 ACPI_WALK_STATE *WalkState;
786
787
788 DbgPrint (ASL_DEBUG_OUTPUT, "\nCross referencing namespace\n\n");
789
790 /*
791 * Create a new walk state for use when looking up names
792 * within the namespace (Passed as context to the callbacks)
793 */
794 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
795 if (!WalkState)
796 {
797 return AE_NO_MEMORY;
798 }
799
800 /* Walk the entire parse tree */
801
802 TrWalkParseTree (RootNode, ASL_WALK_VISIT_TWICE, LkNamespaceLocateBegin,
803 LkNamespaceLocateEnd, WalkState);
804 return AE_OK;
805}
806
807
808/*******************************************************************************
809 *
810 * FUNCTION: LkCheckFieldRange
811 *
812 * PARAMETERS: RegionBitLength - Length of entire parent region
813 * FieldBitOffset - Start of the field unit (within region)
814 * FieldBitLength - Entire length of field unit
815 * AccessBitWidth - Access width of the field unit
816 *
817 * RETURN: None
818 *
819 * DESCRIPTION: Check one field unit to make sure it fits in the parent
820 * op region.
821 *
822 * Note: AccessBitWidth must be either 8,16,32, or 64
823 *
824 ******************************************************************************/
825
826static void
827LkCheckFieldRange (
828 ACPI_PARSE_OBJECT *Op,
829 UINT32 RegionBitLength,
830 UINT32 FieldBitOffset,
831 UINT32 FieldBitLength,
832 UINT32 AccessBitWidth)
833{
834 UINT32 FieldEndBitOffset;
835
836
837 /*
838 * Check each field unit against the region size. The entire
839 * field unit (start offset plus length) must fit within the
840 * region.
841 */
842 FieldEndBitOffset = FieldBitOffset + FieldBitLength;
843
844 if (FieldEndBitOffset > RegionBitLength)
845 {
846 /* Field definition itself is beyond the end-of-region */
847
848 AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_OFFSET, Op, NULL);
849 return;
850 }
851
852 /*
853 * Now check that the field plus AccessWidth doesn't go beyond
854 * the end-of-region. Assumes AccessBitWidth is a power of 2
855 */
856 FieldEndBitOffset = ACPI_ROUND_UP (FieldEndBitOffset, AccessBitWidth);
857
858 if (FieldEndBitOffset > RegionBitLength)
859 {
860 /* Field definition combined with the access is beyond EOR */
861
862 AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_ACCESS_WIDTH, Op, NULL);
863 }
864}
865
866/*******************************************************************************
867 *
868 * FUNCTION: LkNamespaceLocateBegin
869 *
870 * PARAMETERS: ASL_WALK_CALLBACK
871 *
872 * RETURN: Status
873 *
874 * DESCRIPTION: Descending callback used during cross-reference. For named
875 * object references, attempt to locate the name in the
876 * namespace.
877 *
878 * NOTE: ASL references to named fields within resource descriptors are
879 * resolved to integer values here. Therefore, this step is an
880 * important part of the code generation. We don't know that the
881 * name refers to a resource descriptor until now.
882 *
883 ******************************************************************************/
884
885static ACPI_STATUS
886LkNamespaceLocateBegin (
887 ACPI_PARSE_OBJECT *Op,
888 UINT32 Level,
889 void *Context)
890{
891 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
892 ACPI_NAMESPACE_NODE *Node;
893 ACPI_STATUS Status;
894 ACPI_OBJECT_TYPE ObjectType;
895 char *Path;
896 UINT8 PassedArgs;
897 ACPI_PARSE_OBJECT *NextOp;
898 ACPI_PARSE_OBJECT *OwningOp;
899 ACPI_PARSE_OBJECT *SpaceIdOp;
900 UINT32 MinimumLength;
901 UINT32 Temp;
902 const ACPI_OPCODE_INFO *OpInfo;
903 UINT32 Flags;
904
905
906 ACPI_FUNCTION_TRACE_PTR (LkNamespaceLocateBegin, Op);
907
908 /*
909 * If this node is the actual declaration of a name
910 * [such as the XXXX name in "Method (XXXX)"],
911 * we are not interested in it here. We only care about names that are
912 * references to other objects within the namespace and the parent objects
913 * of name declarations
914 */
915 if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)
916 {
917 return (AE_OK);
918 }
919
920 /* We are only interested in opcodes that have an associated name */
921
922 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
923
924 if ((!(OpInfo->Flags & AML_NAMED)) &&
925 (!(OpInfo->Flags & AML_CREATE)) &&
926 (Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) &&
927 (Op->Asl.ParseOpcode != PARSEOP_NAMESEG) &&
928 (Op->Asl.ParseOpcode != PARSEOP_METHODCALL))
929 {
930 return (AE_OK);
931 }
932
933 /*
934 * One special case: CondRefOf operator - we don't care if the name exists
935 * or not at this point, just ignore it, the point of the operator is to
936 * determine if the name exists at runtime.
937 */
938 if ((Op->Asl.Parent) &&
939 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF))
940 {
941 return (AE_OK);
942 }
943
944 /*
945 * We must enable the "search-to-root" for single NameSegs, but
946 * we have to be very careful about opening up scopes
947 */
948 Flags = ACPI_NS_SEARCH_PARENT;
949 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
950 (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
951 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
952 {
953 /*
954 * These are name references, do not push the scope stack
955 * for them.
956 */
957 Flags |= ACPI_NS_DONT_OPEN_SCOPE;
958 }
959
960 /* Get the NamePath from the appropriate place */
961
962 if (OpInfo->Flags & AML_NAMED)
963 {
964 /* For nearly all NAMED operators, the name reference is the first child */
965
966 Path = Op->Asl.Child->Asl.Value.String;
967 if (Op->Asl.AmlOpcode == AML_ALIAS_OP)
968 {
969 /*
970 * ALIAS is the only oddball opcode, the name declaration
971 * (alias name) is the second operand
972 */
973 Path = Op->Asl.Child->Asl.Next->Asl.Value.String;
974 }
975 }
976 else if (OpInfo->Flags & AML_CREATE)
977 {
978 /* Name must appear as the last parameter */
979
980 NextOp = Op->Asl.Child;
981 while (!(NextOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION))
982 {
983 NextOp = NextOp->Asl.Next;
984 }
985 Path = NextOp->Asl.Value.String;
986 }
987 else
988 {
989 Path = Op->Asl.Value.String;
990 }
991
992 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
993 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
994 "Type=%s\n", AcpiUtGetTypeName (ObjectType)));
995
996 /*
997 * Lookup the name in the namespace. Name must exist at this point, or it
998 * is an invalid reference.
999 *
1000 * The namespace is also used as a lookup table for references to resource
1001 * descriptors and the fields within them.
1002 */
1003 Gbl_NsLookupCount++;
1004
1005 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
1006 ACPI_IMODE_EXECUTE, Flags, WalkState, &(Node));
1007 if (ACPI_FAILURE (Status))
1008 {
1009 if (Status == AE_NOT_FOUND)
1010 {
1011 /*
1012 * We didn't find the name reference by path -- we can qualify this
1013 * a little better before we print an error message
1014 */
1015 if (strlen (Path) == ACPI_NAME_SIZE)
1016 {
1017 /* A simple, one-segment ACPI name */
1018
1019 if (LkObjectExists (Path))
1020 {
1021 /*
1022 * There exists such a name, but we couldn't get to it
1023 * from this scope
1024 */
1025 AslError (ASL_ERROR, ASL_MSG_NOT_REACHABLE, Op,
1026 Op->Asl.ExternalName);
1027 }
1028 else
1029 {
1030 /* The name doesn't exist, period */
1031
1032 AslError (ASL_ERROR, ASL_MSG_NOT_EXIST,
1033 Op, Op->Asl.ExternalName);
1034 }
1035 }
1036 else
1037 {
1038 /* Check for a fully qualified path */
1039
1040 if (Path[0] == AML_ROOT_PREFIX)
1041 {
1042 /* Gave full path, the object does not exist */
1043
1044 AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op,
1045 Op->Asl.ExternalName);
1046 }
1047 else
1048 {
1049 /*
1050 * We can't tell whether it doesn't exist or just
1051 * can't be reached.
1052 */
1053 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
1054 Op->Asl.ExternalName);
1055 }
1056 }
1057
1058 Status = AE_OK;
1059 }
1060 return (Status);
1061 }
1062
1063 /* Check for a reference vs. name declaration */
1064
1065 if (!(OpInfo->Flags & AML_NAMED) &&
1066 !(OpInfo->Flags & AML_CREATE))
1067 {
1068 /* This node has been referenced, mark it for reference check */
1069
1070 Node->Flags |= ANOBJ_IS_REFERENCED;
1071 }
1072
1073 /* Attempt to optimize the NamePath */
1074
1075 OptOptimizeNamePath (Op, OpInfo->Flags, WalkState, Path, Node);
1076
1077 /*
1078 * 1) Dereference an alias (A name reference that is an alias)
1079 * Aliases are not nested, the alias always points to the final object
1080 */
1081 if ((Op->Asl.ParseOpcode != PARSEOP_ALIAS) &&
1082 (Node->Type == ACPI_TYPE_LOCAL_ALIAS))
1083 {
1084 /* This node points back to the original PARSEOP_ALIAS */
1085
1086 NextOp = Node->Op;
1087
1088 /* The first child is the alias target op */
1089
1090 NextOp = NextOp->Asl.Child;
1091
1092 /* That in turn points back to original target alias node */
1093
1094 if (NextOp->Asl.Node)
1095 {
1096 Node = NextOp->Asl.Node;
1097 }
1098
1099 /* Else - forward reference to alias, will be resolved later */
1100 }
1101
1102 /* 2) Check for a reference to a resource descriptor */
1103
1104 if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) ||
1105 (Node->Type == ACPI_TYPE_LOCAL_RESOURCE))
1106 {
1107 /*
1108 * This was a reference to a field within a resource descriptor. Extract
1109 * the associated field offset (either a bit or byte offset depending on
1110 * the field type) and change the named reference into an integer for
1111 * AML code generation
1112 */
1113 Temp = Node->Value;
1114 if (Node->Flags & ANOBJ_IS_BIT_OFFSET)
1115 {
1116 Op->Asl.CompileFlags |= NODE_IS_BIT_OFFSET;
1117 }
1118
1119 /* Perform BitOffset <--> ByteOffset conversion if necessary */
1120
1121 switch (Op->Asl.Parent->Asl.AmlOpcode)
1122 {
1123 case AML_CREATE_FIELD_OP:
1124
1125 /* We allow a Byte offset to Bit Offset conversion for this op */
1126
1127 if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET))
1128 {
1129 /* Simply multiply byte offset times 8 to get bit offset */
1130
1131 Temp = ACPI_MUL_8 (Temp);
1132 }
1133 break;
1134
1135
1136 case AML_CREATE_BIT_FIELD_OP:
1137
1138 /* This op requires a Bit Offset */
1139
1140 if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET))
1141 {
1142 AslError (ASL_ERROR, ASL_MSG_BYTES_TO_BITS, Op, NULL);
1143 }
1144 break;
1145
1146
1147 case AML_CREATE_BYTE_FIELD_OP:
1148 case AML_CREATE_WORD_FIELD_OP:
1149 case AML_CREATE_DWORD_FIELD_OP:
1150 case AML_CREATE_QWORD_FIELD_OP:
1151 case AML_INDEX_OP:
1152
1153 /* These Ops require Byte offsets */
1154
1155 if (Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET)
1156 {
1157 AslError (ASL_ERROR, ASL_MSG_BITS_TO_BYTES, Op, NULL);
1158 }
1159 break;
1160
1161
1162 default:
1163 /* Nothing to do for other opcodes */
1164 break;
1165 }
1166
1167 /* Now convert this node to an integer whose value is the field offset */
1168
1169 Op->Asl.AmlLength = 0;
1170 Op->Asl.ParseOpcode = PARSEOP_INTEGER;
1171 Op->Asl.Value.Integer = (UINT64) Temp;
1172 Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD;
1173
1174 OpcGenerateAmlOpcode (Op);
1175 }
1176
1177 /* 3) Check for a method invocation */
1178
1179 else if ((((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG)) &&
1180 (Node->Type == ACPI_TYPE_METHOD) &&
1181 (Op->Asl.Parent) &&
1182 (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_METHOD)) ||
1183
1184 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
1185 {
1186
1187 /*
1188 * A reference to a method within one of these opcodes is not an
1189 * invocation of the method, it is simply a reference to the method.
1190 */
1191 if ((Op->Asl.Parent) &&
1192 ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_REFOF) ||
1193 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEREFOF) ||
1194 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_OBJECTTYPE)))
1195 {
1196 return (AE_OK);
1197 }
1198 /*
1199 * There are two types of method invocation:
1200 * 1) Invocation with arguments -- the parser recognizes this
1201 * as a METHODCALL.
1202 * 2) Invocation with no arguments --the parser cannot determine that
1203 * this is a method invocation, therefore we have to figure it out
1204 * here.
1205 */
1206 if (Node->Type != ACPI_TYPE_METHOD)
1207 {
1208 sprintf (MsgBuffer, "%s is a %s",
1209 Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
1210
1211 AslError (ASL_ERROR, ASL_MSG_NOT_METHOD, Op, MsgBuffer);
1212 return (AE_OK);
1213 }
1214
1215 /* Save the method node in the caller's op */
1216
1217 Op->Asl.Node = Node;
1218 if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF)
1219 {
1220 return (AE_OK);
1221 }
1222
1223 /*
1224 * This is a method invocation, with or without arguments.
1225 * Count the number of arguments, each appears as a child
1226 * under the parent node
1227 */
1228 Op->Asl.ParseOpcode = PARSEOP_METHODCALL;
1229 UtSetParseOpName (Op);
1230
1231 PassedArgs = 0;
1232 NextOp = Op->Asl.Child;
1233
1234 while (NextOp)
1235 {
1236 PassedArgs++;
1237 NextOp = NextOp->Asl.Next;
1238 }
1239
1240 if (Node->Value != ASL_EXTERNAL_METHOD)
1241 {
1242 /*
1243 * Check the parsed arguments with the number expected by the
1244 * method declaration itself
1245 */
1246 if (PassedArgs != Node->Value)
1247 {
1248 sprintf (MsgBuffer, "%s requires %d", Op->Asl.ExternalName,
1249 Node->Value);
1250
1251 if (PassedArgs < Node->Value)
1252 {
1253 AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, MsgBuffer);
1254 }
1255 else
1256 {
1257 AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_HI, Op, MsgBuffer);
1258 }
1259 }
1260 }
1261 }
1262
1263 /* 4) Check for an ASL Field definition */
1264
1265 else if ((Op->Asl.Parent) &&
1266 ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_FIELD) ||
1267 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_BANKFIELD)))
1268 {
1269 /*
1270 * Offset checking for fields. If the parent operation region has a
1271 * constant length (known at compile time), we can check fields
1272 * defined in that region against the region length. This will catch
1273 * fields and field units that cannot possibly fit within the region.
1274 *
1275 * Note: Index fields do not directly reference an operation region,
1276 * thus they are not included in this check.
1277 */
1278 if (Op == Op->Asl.Parent->Asl.Child)
1279 {
1280 /*
1281 * This is the first child of the field node, which is
1282 * the name of the region. Get the parse node for the
1283 * region -- which contains the length of the region.
1284 */
1285 OwningOp = Node->Op;
1286 Op->Asl.Parent->Asl.ExtraValue =
1287 ACPI_MUL_8 ((UINT32) OwningOp->Asl.Value.Integer);
1288
1289 /* Examine the field access width */
1290
1291 switch ((UINT8) Op->Asl.Parent->Asl.Value.Integer)
1292 {
1293 case AML_FIELD_ACCESS_ANY:
1294 case AML_FIELD_ACCESS_BYTE:
1295 case AML_FIELD_ACCESS_BUFFER:
1296 default:
1297 MinimumLength = 1;
1298 break;
1299
1300 case AML_FIELD_ACCESS_WORD:
1301 MinimumLength = 2;
1302 break;
1303
1304 case AML_FIELD_ACCESS_DWORD:
1305 MinimumLength = 4;
1306 break;
1307
1308 case AML_FIELD_ACCESS_QWORD:
1309 MinimumLength = 8;
1310 break;
1311 }
1312
1313 /*
1314 * Is the region at least as big as the access width?
1315 * Note: DataTableRegions have 0 length
1316 */
1317 if (((UINT32) OwningOp->Asl.Value.Integer) &&
1318 ((UINT32) OwningOp->Asl.Value.Integer < MinimumLength))
1319 {
1320 AslError (ASL_ERROR, ASL_MSG_FIELD_ACCESS_WIDTH, Op, NULL);
1321 }
1322
1323 /*
1324 * Check EC/CMOS/SMBUS fields to make sure that the correct
1325 * access type is used (BYTE for EC/CMOS, BUFFER for SMBUS)
1326 */
1327 SpaceIdOp = OwningOp->Asl.Child->Asl.Next;
1328 switch ((UINT32) SpaceIdOp->Asl.Value.Integer)
1329 {
1330 case REGION_EC:
1331 case REGION_CMOS:
1332
1333 if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BYTE)
1334 {
1335 AslError (ASL_ERROR, ASL_MSG_REGION_BYTE_ACCESS, Op, NULL);
1336 }
1337 break;
1338
1339 case REGION_SMBUS:
1340 case REGION_IPMI:
1341
1342 if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BUFFER)
1343 {
1344 AslError (ASL_ERROR, ASL_MSG_REGION_BUFFER_ACCESS, Op, NULL);
1345 }
1346 break;
1347
1348 default:
1349
1350 /* Nothing to do for other address spaces */
1351 break;
1352 }
1353 }
1354 else
1355 {
1356 /*
1357 * This is one element of the field list. Check to make sure
1358 * that it does not go beyond the end of the parent operation region.
1359 *
1360 * In the code below:
1361 * Op->Asl.Parent->Asl.ExtraValue - Region Length (bits)
1362 * Op->Asl.ExtraValue - Field start offset (bits)
1363 * Op->Asl.Child->Asl.Value.Integer32 - Field length (bits)
1364 * Op->Asl.Child->Asl.ExtraValue - Field access width (bits)
1365 */
1366 if (Op->Asl.Parent->Asl.ExtraValue && Op->Asl.Child)
1367 {
1368 LkCheckFieldRange (Op,
1369 Op->Asl.Parent->Asl.ExtraValue,
1370 Op->Asl.ExtraValue,
1371 (UINT32) Op->Asl.Child->Asl.Value.Integer,
1372 Op->Asl.Child->Asl.ExtraValue);
1373 }
1374 }
1375 }
1376
1377 Op->Asl.Node = Node;
1378 return (Status);
1379}
1380
1381
1382/*******************************************************************************
1383 *
1384 * FUNCTION: LkNamespaceLocateEnd
1385 *
1386 * PARAMETERS: ASL_WALK_CALLBACK
1387 *
1388 * RETURN: Status
1389 *
1390 * DESCRIPTION: Ascending callback used during cross reference. We only
1391 * need to worry about scope management here.
1392 *
1393 ******************************************************************************/
1394
1395static ACPI_STATUS
1396LkNamespaceLocateEnd (
1397 ACPI_PARSE_OBJECT *Op,
1398 UINT32 Level,
1399 void *Context)
1400{
1401 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
1402 const ACPI_OPCODE_INFO *OpInfo;
1403
1404
1405 ACPI_FUNCTION_TRACE (LkNamespaceLocateEnd);
1406
1407
1408 /* We are only interested in opcodes that have an associated name */
1409
1410 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
1411 if (!(OpInfo->Flags & AML_NAMED))
1412 {
1413 return (AE_OK);
1414 }
1415
1416 /* Not interested in name references, we did not open a scope for them */
1417
1418 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
1419 (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
1420 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
1421 {
1422 return (AE_OK);
1423 }
1424
1425 /* Pop the scope stack if necessary */
1426
1427 if (AcpiNsOpensScope (AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode)))
1428 {
1429
1430 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
1431 "%s: Popping scope for Op %p\n",
1432 AcpiUtGetTypeName (OpInfo->ObjectType), Op));
1433
1434 (void) AcpiDsScopeStackPop (WalkState);
1435 }
1436
1437 return (AE_OK);
1438}
1439
1440
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