[ACPICA] Update to version 20171215. CORE-15222
[reactos.git] / drivers / bus / acpi / acpica / parser / psobject.c
1 /******************************************************************************
2 *
3 * Module Name: psobject - Support for parse objects
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2017, 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 #include "acpi.h"
45 #include "accommon.h"
46 #include "acparser.h"
47 #include "amlcode.h"
48 #include "acconvert.h"
49
50 #define _COMPONENT ACPI_PARSER
51 ACPI_MODULE_NAME ("psobject")
52
53
54 /* Local prototypes */
55
56 static ACPI_STATUS
57 AcpiPsGetAmlOpcode (
58 ACPI_WALK_STATE *WalkState);
59
60
61 /*******************************************************************************
62 *
63 * FUNCTION: AcpiPsGetAmlOpcode
64 *
65 * PARAMETERS: WalkState - Current state
66 *
67 * RETURN: Status
68 *
69 * DESCRIPTION: Extract the next AML opcode from the input stream.
70 *
71 ******************************************************************************/
72
73 static ACPI_STATUS
74 AcpiPsGetAmlOpcode (
75 ACPI_WALK_STATE *WalkState)
76 {
77 UINT32 AmlOffset;
78
79
80 ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState);
81
82
83 WalkState->Aml = WalkState->ParserState.Aml;
84 WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState));
85
86 /*
87 * First cut to determine what we have found:
88 * 1) A valid AML opcode
89 * 2) A name string
90 * 3) An unknown/invalid opcode
91 */
92 WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode);
93
94 switch (WalkState->OpInfo->Class)
95 {
96 case AML_CLASS_ASCII:
97 case AML_CLASS_PREFIX:
98 /*
99 * Starts with a valid prefix or ASCII char, this is a name
100 * string. Convert the bare name string to a namepath.
101 */
102 WalkState->Opcode = AML_INT_NAMEPATH_OP;
103 WalkState->ArgTypes = ARGP_NAMESTRING;
104 break;
105
106 case AML_CLASS_UNKNOWN:
107
108 /* The opcode is unrecognized. Complain and skip unknown opcodes */
109
110 if (WalkState->PassNumber == 2)
111 {
112 AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->Aml,
113 WalkState->ParserState.AmlStart);
114
115 ACPI_ERROR ((AE_INFO,
116 "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
117 WalkState->Opcode,
118 (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER))));
119
120 ACPI_DUMP_BUFFER ((WalkState->ParserState.Aml - 16), 48);
121
122 #ifdef ACPI_ASL_COMPILER
123 /*
124 * This is executed for the disassembler only. Output goes
125 * to the disassembled ASL output file.
126 */
127 AcpiOsPrintf (
128 "/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n",
129 WalkState->Opcode,
130 (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER)));
131
132 ACPI_ERROR ((AE_INFO,
133 "Aborting disassembly, AML byte code is corrupt"));
134
135 /* Dump the context surrounding the invalid opcode */
136
137 AcpiUtDumpBuffer (((UINT8 *) WalkState->ParserState.Aml - 16),
138 48, DB_BYTE_DISPLAY,
139 (AmlOffset + sizeof (ACPI_TABLE_HEADER) - 16));
140 AcpiOsPrintf (" */\n");
141
142 /*
143 * Just abort the disassembly, cannot continue because the
144 * parser is essentially lost. The disassembler can then
145 * randomly fail because an ill-constructed parse tree
146 * can result.
147 */
148 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
149 #endif
150 }
151
152 /* Increment past one-byte or two-byte opcode */
153
154 WalkState->ParserState.Aml++;
155 if (WalkState->Opcode > 0xFF) /* Can only happen if first byte is 0x5B */
156 {
157 WalkState->ParserState.Aml++;
158 }
159
160 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
161
162 default:
163
164 /* Found opcode info, this is a normal opcode */
165
166 WalkState->ParserState.Aml +=
167 AcpiPsGetOpcodeSize (WalkState->Opcode);
168 WalkState->ArgTypes = WalkState->OpInfo->ParseArgs;
169 break;
170 }
171
172 return_ACPI_STATUS (AE_OK);
173 }
174
175
176 /*******************************************************************************
177 *
178 * FUNCTION: AcpiPsBuildNamedOp
179 *
180 * PARAMETERS: WalkState - Current state
181 * AmlOpStart - Begin of named Op in AML
182 * UnnamedOp - Early Op (not a named Op)
183 * Op - Returned Op
184 *
185 * RETURN: Status
186 *
187 * DESCRIPTION: Parse a named Op
188 *
189 ******************************************************************************/
190
191 ACPI_STATUS
192 AcpiPsBuildNamedOp (
193 ACPI_WALK_STATE *WalkState,
194 UINT8 *AmlOpStart,
195 ACPI_PARSE_OBJECT *UnnamedOp,
196 ACPI_PARSE_OBJECT **Op)
197 {
198 ACPI_STATUS Status = AE_OK;
199 ACPI_PARSE_OBJECT *Arg = NULL;
200
201
202 ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState);
203
204
205 UnnamedOp->Common.Value.Arg = NULL;
206 UnnamedOp->Common.ArgListLength = 0;
207 UnnamedOp->Common.AmlOpcode = WalkState->Opcode;
208
209 /*
210 * Get and append arguments until we find the node that contains
211 * the name (the type ARGP_NAME).
212 */
213 while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) &&
214 (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME))
215 {
216 ASL_CV_CAPTURE_COMMENTS (WalkState);
217 Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState),
218 GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg);
219 if (ACPI_FAILURE (Status))
220 {
221 return_ACPI_STATUS (Status);
222 }
223
224 AcpiPsAppendArg (UnnamedOp, Arg);
225 INCREMENT_ARG_LIST (WalkState->ArgTypes);
226 }
227
228 /* are there any inline comments associated with the NameSeg?? If so, save this. */
229
230 ASL_CV_CAPTURE_COMMENTS (WalkState);
231
232 #ifdef ACPI_ASL_COMPILER
233 if (AcpiGbl_CurrentInlineComment != NULL)
234 {
235 UnnamedOp->Common.NameComment = AcpiGbl_CurrentInlineComment;
236 AcpiGbl_CurrentInlineComment = NULL;
237 }
238 #endif
239
240 /*
241 * Make sure that we found a NAME and didn't run out of arguments
242 */
243 if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes))
244 {
245 return_ACPI_STATUS (AE_AML_NO_OPERAND);
246 }
247
248 /* We know that this arg is a name, move to next arg */
249
250 INCREMENT_ARG_LIST (WalkState->ArgTypes);
251
252 /*
253 * Find the object. This will either insert the object into
254 * the namespace or simply look it up
255 */
256 WalkState->Op = NULL;
257
258 Status = WalkState->DescendingCallback (WalkState, Op);
259 if (ACPI_FAILURE (Status))
260 {
261 if (Status != AE_CTRL_TERMINATE)
262 {
263 ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog"));
264 }
265 return_ACPI_STATUS (Status);
266 }
267
268 if (!*Op)
269 {
270 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
271 }
272
273 Status = AcpiPsNextParseState (WalkState, *Op, Status);
274 if (ACPI_FAILURE (Status))
275 {
276 if (Status == AE_CTRL_PENDING)
277 {
278 Status = AE_CTRL_PARSE_PENDING;
279 }
280 return_ACPI_STATUS (Status);
281 }
282
283 AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg);
284
285 #ifdef ACPI_ASL_COMPILER
286
287 /* save any comments that might be associated with UnnamedOp. */
288
289 (*Op)->Common.InlineComment = UnnamedOp->Common.InlineComment;
290 (*Op)->Common.EndNodeComment = UnnamedOp->Common.EndNodeComment;
291 (*Op)->Common.CloseBraceComment = UnnamedOp->Common.CloseBraceComment;
292 (*Op)->Common.NameComment = UnnamedOp->Common.NameComment;
293 (*Op)->Common.CommentList = UnnamedOp->Common.CommentList;
294 (*Op)->Common.EndBlkComment = UnnamedOp->Common.EndBlkComment;
295 (*Op)->Common.CvFilename = UnnamedOp->Common.CvFilename;
296 (*Op)->Common.CvParentFilename = UnnamedOp->Common.CvParentFilename;
297 (*Op)->Named.Aml = UnnamedOp->Common.Aml;
298
299 UnnamedOp->Common.InlineComment = NULL;
300 UnnamedOp->Common.EndNodeComment = NULL;
301 UnnamedOp->Common.CloseBraceComment = NULL;
302 UnnamedOp->Common.NameComment = NULL;
303 UnnamedOp->Common.CommentList = NULL;
304 UnnamedOp->Common.EndBlkComment = NULL;
305 #endif
306
307 if ((*Op)->Common.AmlOpcode == AML_REGION_OP ||
308 (*Op)->Common.AmlOpcode == AML_DATA_REGION_OP)
309 {
310 /*
311 * Defer final parsing of an OperationRegion body, because we don't
312 * have enough info in the first pass to parse it correctly (i.e.,
313 * there may be method calls within the TermArg elements of the body.)
314 *
315 * However, we must continue parsing because the opregion is not a
316 * standalone package -- we don't know where the end is at this point.
317 *
318 * (Length is unknown until parse of the body complete)
319 */
320 (*Op)->Named.Data = AmlOpStart;
321 (*Op)->Named.Length = 0;
322 }
323
324 return_ACPI_STATUS (AE_OK);
325 }
326
327
328 /*******************************************************************************
329 *
330 * FUNCTION: AcpiPsCreateOp
331 *
332 * PARAMETERS: WalkState - Current state
333 * AmlOpStart - Op start in AML
334 * NewOp - Returned Op
335 *
336 * RETURN: Status
337 *
338 * DESCRIPTION: Get Op from AML
339 *
340 ******************************************************************************/
341
342 ACPI_STATUS
343 AcpiPsCreateOp (
344 ACPI_WALK_STATE *WalkState,
345 UINT8 *AmlOpStart,
346 ACPI_PARSE_OBJECT **NewOp)
347 {
348 ACPI_STATUS Status = AE_OK;
349 ACPI_PARSE_OBJECT *Op;
350 ACPI_PARSE_OBJECT *NamedOp = NULL;
351 ACPI_PARSE_OBJECT *ParentScope;
352 UINT8 ArgumentCount;
353 const ACPI_OPCODE_INFO *OpInfo;
354
355
356 ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState);
357
358
359 Status = AcpiPsGetAmlOpcode (WalkState);
360 if (Status == AE_CTRL_PARSE_CONTINUE)
361 {
362 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
363 }
364 if (ACPI_FAILURE (Status))
365 {
366 return_ACPI_STATUS (Status);
367 }
368
369 /* Create Op structure and append to parent's argument list */
370
371 WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode);
372 Op = AcpiPsAllocOp (WalkState->Opcode, AmlOpStart);
373 if (!Op)
374 {
375 return_ACPI_STATUS (AE_NO_MEMORY);
376 }
377
378 if (WalkState->OpInfo->Flags & AML_NAMED)
379 {
380 Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp);
381 AcpiPsFreeOp (Op);
382
383 #ifdef ACPI_ASL_COMPILER
384 if (AcpiGbl_DisasmFlag && WalkState->Opcode == AML_EXTERNAL_OP &&
385 Status == AE_NOT_FOUND)
386 {
387 /*
388 * If parsing of AML_EXTERNAL_OP's name path fails, then skip
389 * past this opcode and keep parsing. This is a much better
390 * alternative than to abort the entire disassembler. At this
391 * point, the ParserState is at the end of the namepath of the
392 * external declaration opcode. Setting WalkState->Aml to
393 * WalkState->ParserState.Aml + 2 moves increments the
394 * WalkState->Aml past the object type and the paramcount of the
395 * external opcode.
396 */
397 WalkState->Aml = WalkState->ParserState.Aml + 2;
398 WalkState->ParserState.Aml = WalkState->Aml;
399 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
400 }
401 #endif
402 if (ACPI_FAILURE (Status))
403 {
404 return_ACPI_STATUS (Status);
405 }
406
407 *NewOp = NamedOp;
408 return_ACPI_STATUS (AE_OK);
409 }
410
411 /* Not a named opcode, just allocate Op and append to parent */
412
413 if (WalkState->OpInfo->Flags & AML_CREATE)
414 {
415 /*
416 * Backup to beginning of CreateXXXfield declaration
417 * BodyLength is unknown until we parse the body
418 */
419 Op->Named.Data = AmlOpStart;
420 Op->Named.Length = 0;
421 }
422
423 if (WalkState->Opcode == AML_BANK_FIELD_OP)
424 {
425 /*
426 * Backup to beginning of BankField declaration
427 * BodyLength is unknown until we parse the body
428 */
429 Op->Named.Data = AmlOpStart;
430 Op->Named.Length = 0;
431 }
432
433 ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState));
434 AcpiPsAppendArg (ParentScope, Op);
435
436 if (ParentScope)
437 {
438 OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode);
439 if (OpInfo->Flags & AML_HAS_TARGET)
440 {
441 ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type);
442 if (ParentScope->Common.ArgListLength > ArgumentCount)
443 {
444 Op->Common.Flags |= ACPI_PARSEOP_TARGET;
445 }
446 }
447
448 /*
449 * Special case for both Increment() and Decrement(), where
450 * the lone argument is both a source and a target.
451 */
452 else if ((ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) ||
453 (ParentScope->Common.AmlOpcode == AML_DECREMENT_OP))
454 {
455 Op->Common.Flags |= ACPI_PARSEOP_TARGET;
456 }
457 }
458
459 if (WalkState->DescendingCallback != NULL)
460 {
461 /*
462 * Find the object. This will either insert the object into
463 * the namespace or simply look it up
464 */
465 WalkState->Op = *NewOp = Op;
466
467 Status = WalkState->DescendingCallback (WalkState, &Op);
468 Status = AcpiPsNextParseState (WalkState, Op, Status);
469 if (Status == AE_CTRL_PENDING)
470 {
471 Status = AE_CTRL_PARSE_PENDING;
472 }
473 }
474
475 return_ACPI_STATUS (Status);
476 }
477
478
479 /*******************************************************************************
480 *
481 * FUNCTION: AcpiPsCompleteOp
482 *
483 * PARAMETERS: WalkState - Current state
484 * Op - Returned Op
485 * Status - Parse status before complete Op
486 *
487 * RETURN: Status
488 *
489 * DESCRIPTION: Complete Op
490 *
491 ******************************************************************************/
492
493 ACPI_STATUS
494 AcpiPsCompleteOp (
495 ACPI_WALK_STATE *WalkState,
496 ACPI_PARSE_OBJECT **Op,
497 ACPI_STATUS Status)
498 {
499 ACPI_STATUS Status2;
500
501
502 ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState);
503
504
505 /*
506 * Finished one argument of the containing scope
507 */
508 WalkState->ParserState.Scope->ParseScope.ArgCount--;
509
510 /* Close this Op (will result in parse subtree deletion) */
511
512 Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
513 if (ACPI_FAILURE (Status2))
514 {
515 return_ACPI_STATUS (Status2);
516 }
517
518 *Op = NULL;
519
520 switch (Status)
521 {
522 case AE_OK:
523
524 break;
525
526 case AE_CTRL_TRANSFER:
527
528 /* We are about to transfer to a called method */
529
530 WalkState->PrevOp = NULL;
531 WalkState->PrevArgTypes = WalkState->ArgTypes;
532 return_ACPI_STATUS (Status);
533
534 case AE_CTRL_END:
535
536 AcpiPsPopScope (&(WalkState->ParserState), Op,
537 &WalkState->ArgTypes, &WalkState->ArgCount);
538
539 if (*Op)
540 {
541 WalkState->Op = *Op;
542 WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode);
543 WalkState->Opcode = (*Op)->Common.AmlOpcode;
544
545 Status = WalkState->AscendingCallback (WalkState);
546 Status = AcpiPsNextParseState (WalkState, *Op, Status);
547
548 Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
549 if (ACPI_FAILURE (Status2))
550 {
551 return_ACPI_STATUS (Status2);
552 }
553 }
554
555 Status = AE_OK;
556 break;
557
558 case AE_CTRL_BREAK:
559 case AE_CTRL_CONTINUE:
560
561 /* Pop off scopes until we find the While */
562
563 while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP))
564 {
565 AcpiPsPopScope (&(WalkState->ParserState), Op,
566 &WalkState->ArgTypes, &WalkState->ArgCount);
567 }
568
569 /* Close this iteration of the While loop */
570
571 WalkState->Op = *Op;
572 WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode);
573 WalkState->Opcode = (*Op)->Common.AmlOpcode;
574
575 Status = WalkState->AscendingCallback (WalkState);
576 Status = AcpiPsNextParseState (WalkState, *Op, Status);
577
578 Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
579 if (ACPI_FAILURE (Status2))
580 {
581 return_ACPI_STATUS (Status2);
582 }
583
584 Status = AE_OK;
585 break;
586
587 case AE_CTRL_TERMINATE:
588
589 /* Clean up */
590 do
591 {
592 if (*Op)
593 {
594 Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
595 if (ACPI_FAILURE (Status2))
596 {
597 return_ACPI_STATUS (Status2);
598 }
599
600 AcpiUtDeleteGenericState (
601 AcpiUtPopGenericState (&WalkState->ControlState));
602 }
603
604 AcpiPsPopScope (&(WalkState->ParserState), Op,
605 &WalkState->ArgTypes, &WalkState->ArgCount);
606
607 } while (*Op);
608
609 return_ACPI_STATUS (AE_OK);
610
611 default: /* All other non-AE_OK status */
612
613 do
614 {
615 if (*Op)
616 {
617 Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
618 if (ACPI_FAILURE (Status2))
619 {
620 return_ACPI_STATUS (Status2);
621 }
622 }
623
624 AcpiPsPopScope (&(WalkState->ParserState), Op,
625 &WalkState->ArgTypes, &WalkState->ArgCount);
626
627 } while (*Op);
628
629
630 #if 0
631 /*
632 * TBD: Cleanup parse ops on error
633 */
634 if (*Op == NULL)
635 {
636 AcpiPsPopScope (ParserState, Op,
637 &WalkState->ArgTypes, &WalkState->ArgCount);
638 }
639 #endif
640 WalkState->PrevOp = NULL;
641 WalkState->PrevArgTypes = WalkState->ArgTypes;
642 return_ACPI_STATUS (Status);
643 }
644
645 /* This scope complete? */
646
647 if (AcpiPsHasCompletedScope (&(WalkState->ParserState)))
648 {
649 AcpiPsPopScope (&(WalkState->ParserState), Op,
650 &WalkState->ArgTypes, &WalkState->ArgCount);
651 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *Op));
652 }
653 else
654 {
655 *Op = NULL;
656 }
657
658 return_ACPI_STATUS (AE_OK);
659 }
660
661
662 /*******************************************************************************
663 *
664 * FUNCTION: AcpiPsCompleteFinalOp
665 *
666 * PARAMETERS: WalkState - Current state
667 * Op - Current Op
668 * Status - Current parse status before complete last
669 * Op
670 *
671 * RETURN: Status
672 *
673 * DESCRIPTION: Complete last Op.
674 *
675 ******************************************************************************/
676
677 ACPI_STATUS
678 AcpiPsCompleteFinalOp (
679 ACPI_WALK_STATE *WalkState,
680 ACPI_PARSE_OBJECT *Op,
681 ACPI_STATUS Status)
682 {
683 ACPI_STATUS Status2;
684
685
686 ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState);
687
688
689 /*
690 * Complete the last Op (if not completed), and clear the scope stack.
691 * It is easily possible to end an AML "package" with an unbounded number
692 * of open scopes (such as when several ASL blocks are closed with
693 * sequential closing braces). We want to terminate each one cleanly.
694 */
695 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", Op));
696 do
697 {
698 if (Op)
699 {
700 if (WalkState->AscendingCallback != NULL)
701 {
702 WalkState->Op = Op;
703 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
704 WalkState->Opcode = Op->Common.AmlOpcode;
705
706 Status = WalkState->AscendingCallback (WalkState);
707 Status = AcpiPsNextParseState (WalkState, Op, Status);
708 if (Status == AE_CTRL_PENDING)
709 {
710 Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK);
711 if (ACPI_FAILURE (Status))
712 {
713 return_ACPI_STATUS (Status);
714 }
715 }
716
717 if (Status == AE_CTRL_TERMINATE)
718 {
719 Status = AE_OK;
720
721 /* Clean up */
722 do
723 {
724 if (Op)
725 {
726 Status2 = AcpiPsCompleteThisOp (WalkState, Op);
727 if (ACPI_FAILURE (Status2))
728 {
729 return_ACPI_STATUS (Status2);
730 }
731 }
732
733 AcpiPsPopScope (&(WalkState->ParserState), &Op,
734 &WalkState->ArgTypes, &WalkState->ArgCount);
735
736 } while (Op);
737
738 return_ACPI_STATUS (Status);
739 }
740
741 else if (ACPI_FAILURE (Status))
742 {
743 /* First error is most important */
744
745 (void) AcpiPsCompleteThisOp (WalkState, Op);
746 return_ACPI_STATUS (Status);
747 }
748 }
749
750 Status2 = AcpiPsCompleteThisOp (WalkState, Op);
751 if (ACPI_FAILURE (Status2))
752 {
753 return_ACPI_STATUS (Status2);
754 }
755 }
756
757 AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes,
758 &WalkState->ArgCount);
759
760 } while (Op);
761
762 return_ACPI_STATUS (Status);
763 }