1 | /****************************************************************************** |
2 | * |
3 | * Module Name: psobject - Support for parse objects |
4 | * |
5 | *****************************************************************************/ |
6 | |
7 | /* |
8 | * Copyright (C) 2000 - 2016, 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 | |
49 | #define _COMPONENT ACPI_PARSER |
50 | ACPI_MODULE_NAME ("psobject" ) |
51 | |
52 | |
53 | /* Local prototypes */ |
54 | |
55 | static ACPI_STATUS |
56 | AcpiPsGetAmlOpcode ( |
57 | ACPI_WALK_STATE *WalkState); |
58 | |
59 | |
60 | /******************************************************************************* |
61 | * |
62 | * FUNCTION: AcpiPsGetAmlOpcode |
63 | * |
64 | * PARAMETERS: WalkState - Current state |
65 | * |
66 | * RETURN: Status |
67 | * |
68 | * DESCRIPTION: Extract the next AML opcode from the input stream. |
69 | * |
70 | ******************************************************************************/ |
71 | |
72 | static ACPI_STATUS |
73 | AcpiPsGetAmlOpcode ( |
74 | ACPI_WALK_STATE *WalkState) |
75 | { |
76 | UINT32 AmlOffset; |
77 | |
78 | |
79 | ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); |
80 | |
81 | |
82 | WalkState->Aml = WalkState->ParserState.Aml; |
83 | WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState)); |
84 | |
85 | /* |
86 | * First cut to determine what we have found: |
87 | * 1) A valid AML opcode |
88 | * 2) A name string |
89 | * 3) An unknown/invalid opcode |
90 | */ |
91 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); |
92 | |
93 | switch (WalkState->OpInfo->Class) |
94 | { |
95 | case AML_CLASS_ASCII: |
96 | case AML_CLASS_PREFIX: |
97 | /* |
98 | * Starts with a valid prefix or ASCII char, this is a name |
99 | * string. Convert the bare name string to a namepath. |
100 | */ |
101 | WalkState->Opcode = AML_INT_NAMEPATH_OP; |
102 | WalkState->ArgTypes = ARGP_NAMESTRING; |
103 | break; |
104 | |
105 | case AML_CLASS_UNKNOWN: |
106 | |
107 | /* The opcode is unrecognized. Complain and skip unknown opcodes */ |
108 | |
109 | if (WalkState->PassNumber == 2) |
110 | { |
111 | AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->Aml, |
112 | WalkState->ParserState.AmlStart); |
113 | |
114 | ACPI_ERROR ((AE_INFO, |
115 | "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring" , |
116 | WalkState->Opcode, |
117 | (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER)))); |
118 | |
119 | ACPI_DUMP_BUFFER ((WalkState->ParserState.Aml - 16), 48); |
120 | |
121 | #ifdef ACPI_ASL_COMPILER |
122 | /* |
123 | * This is executed for the disassembler only. Output goes |
124 | * to the disassembled ASL output file. |
125 | */ |
126 | AcpiOsPrintf ( |
127 | "/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n" , |
128 | WalkState->Opcode, |
129 | (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER))); |
130 | |
131 | /* Dump the context surrounding the invalid opcode */ |
132 | |
133 | AcpiUtDumpBuffer (((UINT8 *) WalkState->ParserState.Aml - 16), |
134 | 48, DB_BYTE_DISPLAY, |
135 | (AmlOffset + sizeof (ACPI_TABLE_HEADER) - 16)); |
136 | AcpiOsPrintf (" */\n" ); |
137 | #endif |
138 | } |
139 | |
140 | /* Increment past one-byte or two-byte opcode */ |
141 | |
142 | WalkState->ParserState.Aml++; |
143 | if (WalkState->Opcode > 0xFF) /* Can only happen if first byte is 0x5B */ |
144 | { |
145 | WalkState->ParserState.Aml++; |
146 | } |
147 | |
148 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
149 | |
150 | default: |
151 | |
152 | /* Found opcode info, this is a normal opcode */ |
153 | |
154 | WalkState->ParserState.Aml += |
155 | AcpiPsGetOpcodeSize (WalkState->Opcode); |
156 | WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; |
157 | break; |
158 | } |
159 | |
160 | return_ACPI_STATUS (AE_OK); |
161 | } |
162 | |
163 | |
164 | /******************************************************************************* |
165 | * |
166 | * FUNCTION: AcpiPsBuildNamedOp |
167 | * |
168 | * PARAMETERS: WalkState - Current state |
169 | * AmlOpStart - Begin of named Op in AML |
170 | * UnnamedOp - Early Op (not a named Op) |
171 | * Op - Returned Op |
172 | * |
173 | * RETURN: Status |
174 | * |
175 | * DESCRIPTION: Parse a named Op |
176 | * |
177 | ******************************************************************************/ |
178 | |
179 | ACPI_STATUS |
180 | AcpiPsBuildNamedOp ( |
181 | ACPI_WALK_STATE *WalkState, |
182 | UINT8 *AmlOpStart, |
183 | ACPI_PARSE_OBJECT *UnnamedOp, |
184 | ACPI_PARSE_OBJECT **Op) |
185 | { |
186 | ACPI_STATUS Status = AE_OK; |
187 | ACPI_PARSE_OBJECT *Arg = NULL; |
188 | |
189 | |
190 | ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState); |
191 | |
192 | |
193 | UnnamedOp->Common.Value.Arg = NULL; |
194 | UnnamedOp->Common.ArgListLength = 0; |
195 | UnnamedOp->Common.AmlOpcode = WalkState->Opcode; |
196 | |
197 | /* |
198 | * Get and append arguments until we find the node that contains |
199 | * the name (the type ARGP_NAME). |
200 | */ |
201 | while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && |
202 | (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME)) |
203 | { |
204 | Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), |
205 | GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); |
206 | if (ACPI_FAILURE (Status)) |
207 | { |
208 | return_ACPI_STATUS (Status); |
209 | } |
210 | |
211 | AcpiPsAppendArg (UnnamedOp, Arg); |
212 | INCREMENT_ARG_LIST (WalkState->ArgTypes); |
213 | } |
214 | |
215 | /* |
216 | * Make sure that we found a NAME and didn't run out of arguments |
217 | */ |
218 | if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes)) |
219 | { |
220 | return_ACPI_STATUS (AE_AML_NO_OPERAND); |
221 | } |
222 | |
223 | /* We know that this arg is a name, move to next arg */ |
224 | |
225 | INCREMENT_ARG_LIST (WalkState->ArgTypes); |
226 | |
227 | /* |
228 | * Find the object. This will either insert the object into |
229 | * the namespace or simply look it up |
230 | */ |
231 | WalkState->Op = NULL; |
232 | |
233 | Status = WalkState->DescendingCallback (WalkState, Op); |
234 | if (ACPI_FAILURE (Status)) |
235 | { |
236 | if (Status != AE_CTRL_TERMINATE) |
237 | { |
238 | ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog" )); |
239 | } |
240 | return_ACPI_STATUS (Status); |
241 | } |
242 | |
243 | if (!*Op) |
244 | { |
245 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
246 | } |
247 | |
248 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
249 | if (ACPI_FAILURE (Status)) |
250 | { |
251 | if (Status == AE_CTRL_PENDING) |
252 | { |
253 | Status = AE_CTRL_PARSE_PENDING; |
254 | } |
255 | return_ACPI_STATUS (Status); |
256 | } |
257 | |
258 | AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); |
259 | |
260 | if ((*Op)->Common.AmlOpcode == AML_REGION_OP || |
261 | (*Op)->Common.AmlOpcode == AML_DATA_REGION_OP) |
262 | { |
263 | /* |
264 | * Defer final parsing of an OperationRegion body, because we don't |
265 | * have enough info in the first pass to parse it correctly (i.e., |
266 | * there may be method calls within the TermArg elements of the body.) |
267 | * |
268 | * However, we must continue parsing because the opregion is not a |
269 | * standalone package -- we don't know where the end is at this point. |
270 | * |
271 | * (Length is unknown until parse of the body complete) |
272 | */ |
273 | (*Op)->Named.Data = AmlOpStart; |
274 | (*Op)->Named.Length = 0; |
275 | } |
276 | |
277 | return_ACPI_STATUS (AE_OK); |
278 | } |
279 | |
280 | |
281 | /******************************************************************************* |
282 | * |
283 | * FUNCTION: AcpiPsCreateOp |
284 | * |
285 | * PARAMETERS: WalkState - Current state |
286 | * AmlOpStart - Op start in AML |
287 | * NewOp - Returned Op |
288 | * |
289 | * RETURN: Status |
290 | * |
291 | * DESCRIPTION: Get Op from AML |
292 | * |
293 | ******************************************************************************/ |
294 | |
295 | ACPI_STATUS |
296 | AcpiPsCreateOp ( |
297 | ACPI_WALK_STATE *WalkState, |
298 | UINT8 *AmlOpStart, |
299 | ACPI_PARSE_OBJECT **NewOp) |
300 | { |
301 | ACPI_STATUS Status = AE_OK; |
302 | ACPI_PARSE_OBJECT *Op; |
303 | ACPI_PARSE_OBJECT *NamedOp = NULL; |
304 | ACPI_PARSE_OBJECT *ParentScope; |
305 | UINT8 ArgumentCount; |
306 | const ACPI_OPCODE_INFO *OpInfo; |
307 | |
308 | |
309 | ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState); |
310 | |
311 | |
312 | Status = AcpiPsGetAmlOpcode (WalkState); |
313 | if (Status == AE_CTRL_PARSE_CONTINUE) |
314 | { |
315 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
316 | } |
317 | |
318 | /* Create Op structure and append to parent's argument list */ |
319 | |
320 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); |
321 | Op = AcpiPsAllocOp (WalkState->Opcode, AmlOpStart); |
322 | if (!Op) |
323 | { |
324 | return_ACPI_STATUS (AE_NO_MEMORY); |
325 | } |
326 | |
327 | if (WalkState->OpInfo->Flags & AML_NAMED) |
328 | { |
329 | Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); |
330 | AcpiPsFreeOp (Op); |
331 | if (ACPI_FAILURE (Status)) |
332 | { |
333 | return_ACPI_STATUS (Status); |
334 | } |
335 | |
336 | *NewOp = NamedOp; |
337 | return_ACPI_STATUS (AE_OK); |
338 | } |
339 | |
340 | /* Not a named opcode, just allocate Op and append to parent */ |
341 | |
342 | if (WalkState->OpInfo->Flags & AML_CREATE) |
343 | { |
344 | /* |
345 | * Backup to beginning of CreateXXXfield declaration |
346 | * BodyLength is unknown until we parse the body |
347 | */ |
348 | Op->Named.Data = AmlOpStart; |
349 | Op->Named.Length = 0; |
350 | } |
351 | |
352 | if (WalkState->Opcode == AML_BANK_FIELD_OP) |
353 | { |
354 | /* |
355 | * Backup to beginning of BankField declaration |
356 | * BodyLength is unknown until we parse the body |
357 | */ |
358 | Op->Named.Data = AmlOpStart; |
359 | Op->Named.Length = 0; |
360 | } |
361 | |
362 | ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState)); |
363 | AcpiPsAppendArg (ParentScope, Op); |
364 | |
365 | if (ParentScope) |
366 | { |
367 | OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode); |
368 | if (OpInfo->Flags & AML_HAS_TARGET) |
369 | { |
370 | ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type); |
371 | if (ParentScope->Common.ArgListLength > ArgumentCount) |
372 | { |
373 | Op->Common.Flags |= ACPI_PARSEOP_TARGET; |
374 | } |
375 | } |
376 | else if (ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) |
377 | { |
378 | Op->Common.Flags |= ACPI_PARSEOP_TARGET; |
379 | } |
380 | } |
381 | |
382 | if (WalkState->DescendingCallback != NULL) |
383 | { |
384 | /* |
385 | * Find the object. This will either insert the object into |
386 | * the namespace or simply look it up |
387 | */ |
388 | WalkState->Op = *NewOp = Op; |
389 | |
390 | Status = WalkState->DescendingCallback (WalkState, &Op); |
391 | Status = AcpiPsNextParseState (WalkState, Op, Status); |
392 | if (Status == AE_CTRL_PENDING) |
393 | { |
394 | Status = AE_CTRL_PARSE_PENDING; |
395 | } |
396 | } |
397 | |
398 | return_ACPI_STATUS (Status); |
399 | } |
400 | |
401 | |
402 | /******************************************************************************* |
403 | * |
404 | * FUNCTION: AcpiPsCompleteOp |
405 | * |
406 | * PARAMETERS: WalkState - Current state |
407 | * Op - Returned Op |
408 | * Status - Parse status before complete Op |
409 | * |
410 | * RETURN: Status |
411 | * |
412 | * DESCRIPTION: Complete Op |
413 | * |
414 | ******************************************************************************/ |
415 | |
416 | ACPI_STATUS |
417 | AcpiPsCompleteOp ( |
418 | ACPI_WALK_STATE *WalkState, |
419 | ACPI_PARSE_OBJECT **Op, |
420 | ACPI_STATUS Status) |
421 | { |
422 | ACPI_STATUS Status2; |
423 | |
424 | |
425 | ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState); |
426 | |
427 | |
428 | /* |
429 | * Finished one argument of the containing scope |
430 | */ |
431 | WalkState->ParserState.Scope->ParseScope.ArgCount--; |
432 | |
433 | /* Close this Op (will result in parse subtree deletion) */ |
434 | |
435 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
436 | if (ACPI_FAILURE (Status2)) |
437 | { |
438 | return_ACPI_STATUS (Status2); |
439 | } |
440 | |
441 | *Op = NULL; |
442 | |
443 | switch (Status) |
444 | { |
445 | case AE_OK: |
446 | |
447 | break; |
448 | |
449 | case AE_CTRL_TRANSFER: |
450 | |
451 | /* We are about to transfer to a called method */ |
452 | |
453 | WalkState->PrevOp = NULL; |
454 | WalkState->PrevArgTypes = WalkState->ArgTypes; |
455 | return_ACPI_STATUS (Status); |
456 | |
457 | case AE_CTRL_END: |
458 | |
459 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
460 | &WalkState->ArgTypes, &WalkState->ArgCount); |
461 | |
462 | if (*Op) |
463 | { |
464 | WalkState->Op = *Op; |
465 | WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); |
466 | WalkState->Opcode = (*Op)->Common.AmlOpcode; |
467 | |
468 | Status = WalkState->AscendingCallback (WalkState); |
469 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
470 | |
471 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
472 | if (ACPI_FAILURE (Status2)) |
473 | { |
474 | return_ACPI_STATUS (Status2); |
475 | } |
476 | } |
477 | |
478 | Status = AE_OK; |
479 | break; |
480 | |
481 | case AE_CTRL_BREAK: |
482 | case AE_CTRL_CONTINUE: |
483 | |
484 | /* Pop off scopes until we find the While */ |
485 | |
486 | while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP)) |
487 | { |
488 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
489 | &WalkState->ArgTypes, &WalkState->ArgCount); |
490 | } |
491 | |
492 | /* Close this iteration of the While loop */ |
493 | |
494 | WalkState->Op = *Op; |
495 | WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); |
496 | WalkState->Opcode = (*Op)->Common.AmlOpcode; |
497 | |
498 | Status = WalkState->AscendingCallback (WalkState); |
499 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
500 | |
501 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
502 | if (ACPI_FAILURE (Status2)) |
503 | { |
504 | return_ACPI_STATUS (Status2); |
505 | } |
506 | |
507 | Status = AE_OK; |
508 | break; |
509 | |
510 | case AE_CTRL_TERMINATE: |
511 | |
512 | /* Clean up */ |
513 | do |
514 | { |
515 | if (*Op) |
516 | { |
517 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
518 | if (ACPI_FAILURE (Status2)) |
519 | { |
520 | return_ACPI_STATUS (Status2); |
521 | } |
522 | |
523 | AcpiUtDeleteGenericState ( |
524 | AcpiUtPopGenericState (&WalkState->ControlState)); |
525 | } |
526 | |
527 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
528 | &WalkState->ArgTypes, &WalkState->ArgCount); |
529 | |
530 | } while (*Op); |
531 | |
532 | return_ACPI_STATUS (AE_OK); |
533 | |
534 | default: /* All other non-AE_OK status */ |
535 | |
536 | do |
537 | { |
538 | if (*Op) |
539 | { |
540 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
541 | if (ACPI_FAILURE (Status2)) |
542 | { |
543 | return_ACPI_STATUS (Status2); |
544 | } |
545 | } |
546 | |
547 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
548 | &WalkState->ArgTypes, &WalkState->ArgCount); |
549 | |
550 | } while (*Op); |
551 | |
552 | |
553 | #if 0 |
554 | /* |
555 | * TBD: Cleanup parse ops on error |
556 | */ |
557 | if (*Op == NULL) |
558 | { |
559 | AcpiPsPopScope (ParserState, Op, |
560 | &WalkState->ArgTypes, &WalkState->ArgCount); |
561 | } |
562 | #endif |
563 | WalkState->PrevOp = NULL; |
564 | WalkState->PrevArgTypes = WalkState->ArgTypes; |
565 | return_ACPI_STATUS (Status); |
566 | } |
567 | |
568 | /* This scope complete? */ |
569 | |
570 | if (AcpiPsHasCompletedScope (&(WalkState->ParserState))) |
571 | { |
572 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
573 | &WalkState->ArgTypes, &WalkState->ArgCount); |
574 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n" , *Op)); |
575 | } |
576 | else |
577 | { |
578 | *Op = NULL; |
579 | } |
580 | |
581 | return_ACPI_STATUS (AE_OK); |
582 | } |
583 | |
584 | |
585 | /******************************************************************************* |
586 | * |
587 | * FUNCTION: AcpiPsCompleteFinalOp |
588 | * |
589 | * PARAMETERS: WalkState - Current state |
590 | * Op - Current Op |
591 | * Status - Current parse status before complete last |
592 | * Op |
593 | * |
594 | * RETURN: Status |
595 | * |
596 | * DESCRIPTION: Complete last Op. |
597 | * |
598 | ******************************************************************************/ |
599 | |
600 | ACPI_STATUS |
601 | AcpiPsCompleteFinalOp ( |
602 | ACPI_WALK_STATE *WalkState, |
603 | ACPI_PARSE_OBJECT *Op, |
604 | ACPI_STATUS Status) |
605 | { |
606 | ACPI_STATUS Status2; |
607 | |
608 | |
609 | ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState); |
610 | |
611 | |
612 | /* |
613 | * Complete the last Op (if not completed), and clear the scope stack. |
614 | * It is easily possible to end an AML "package" with an unbounded number |
615 | * of open scopes (such as when several ASL blocks are closed with |
616 | * sequential closing braces). We want to terminate each one cleanly. |
617 | */ |
618 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n" , Op)); |
619 | do |
620 | { |
621 | if (Op) |
622 | { |
623 | if (WalkState->AscendingCallback != NULL) |
624 | { |
625 | WalkState->Op = Op; |
626 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
627 | WalkState->Opcode = Op->Common.AmlOpcode; |
628 | |
629 | Status = WalkState->AscendingCallback (WalkState); |
630 | Status = AcpiPsNextParseState (WalkState, Op, Status); |
631 | if (Status == AE_CTRL_PENDING) |
632 | { |
633 | Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK); |
634 | if (ACPI_FAILURE (Status)) |
635 | { |
636 | return_ACPI_STATUS (Status); |
637 | } |
638 | } |
639 | |
640 | if (Status == AE_CTRL_TERMINATE) |
641 | { |
642 | Status = AE_OK; |
643 | |
644 | /* Clean up */ |
645 | do |
646 | { |
647 | if (Op) |
648 | { |
649 | Status2 = AcpiPsCompleteThisOp (WalkState, Op); |
650 | if (ACPI_FAILURE (Status2)) |
651 | { |
652 | return_ACPI_STATUS (Status2); |
653 | } |
654 | } |
655 | |
656 | AcpiPsPopScope (&(WalkState->ParserState), &Op, |
657 | &WalkState->ArgTypes, &WalkState->ArgCount); |
658 | |
659 | } while (Op); |
660 | |
661 | return_ACPI_STATUS (Status); |
662 | } |
663 | |
664 | else if (ACPI_FAILURE (Status)) |
665 | { |
666 | /* First error is most important */ |
667 | |
668 | (void) AcpiPsCompleteThisOp (WalkState, Op); |
669 | return_ACPI_STATUS (Status); |
670 | } |
671 | } |
672 | |
673 | Status2 = AcpiPsCompleteThisOp (WalkState, Op); |
674 | if (ACPI_FAILURE (Status2)) |
675 | { |
676 | return_ACPI_STATUS (Status2); |
677 | } |
678 | } |
679 | |
680 | AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, |
681 | &WalkState->ArgCount); |
682 | |
683 | } while (Op); |
684 | |
685 | return_ACPI_STATUS (Status); |
686 | } |
687 | |