1 /*******************************************************************************
2 *
3 * Module Name: dmwalk - AML disassembly tree walk
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 #include "acdebug.h"
49
50
51 #define _COMPONENT ACPI_CA_DEBUGGER
52 ACPI_MODULE_NAME ("dmwalk")
53
54
55 #define DB_FULL_OP_INFO "[%4.4s] @%5.5X #%4.4X: "
56
57 /* Stub for non-compiler code */
58
59 #ifndef ACPI_ASL_COMPILER
60 void
AcpiDmEmitExternals(void)61 AcpiDmEmitExternals (
62 void)
63 {
64 return;
65 }
66 #endif
67
68 /* Local prototypes */
69
70 static ACPI_STATUS
71 AcpiDmDescendingOp (
72 ACPI_PARSE_OBJECT *Op,
73 UINT32 Level,
74 void *Context);
75
76 static ACPI_STATUS
77 AcpiDmAscendingOp (
78 ACPI_PARSE_OBJECT *Op,
79 UINT32 Level,
80 void *Context);
81
82 static UINT32
83 AcpiDmBlockType (
84 ACPI_PARSE_OBJECT *Op);
85
86
87 /*******************************************************************************
88 *
89 * FUNCTION: AcpiDmDisassemble
90 *
91 * PARAMETERS: WalkState - Current state
92 * Origin - Starting object
93 * NumOpcodes - Max number of opcodes to be displayed
94 *
95 * RETURN: None
96 *
97 * DESCRIPTION: Disassemble parser object and its children. This is the
98 * main entry point of the disassembler.
99 *
100 ******************************************************************************/
101
102 void
AcpiDmDisassemble(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Origin,UINT32 NumOpcodes)103 AcpiDmDisassemble (
104 ACPI_WALK_STATE *WalkState,
105 ACPI_PARSE_OBJECT *Origin,
106 UINT32 NumOpcodes)
107 {
108 ACPI_PARSE_OBJECT *Op = Origin;
109 ACPI_OP_WALK_INFO Info;
110
111
112 if (!Op)
113 {
114 return;
115 }
116
117 memset (&Info, 0, sizeof (ACPI_OP_WALK_INFO));
118 Info.WalkState = WalkState;
119 Info.StartAml = Op->Common.Aml - sizeof (ACPI_TABLE_HEADER);
120 Info.AmlOffset = Op->Common.Aml - Info.StartAml;
121
122 AcpiDmWalkParseTree (Op, AcpiDmDescendingOp, AcpiDmAscendingOp, &Info);
123 return;
124 }
125
126
127 /*******************************************************************************
128 *
129 * FUNCTION: AcpiDmWalkParseTree
130 *
131 * PARAMETERS: Op - Root Op object
132 * DescendingCallback - Called during tree descent
133 * AscendingCallback - Called during tree ascent
134 * Context - To be passed to the callbacks
135 *
136 * RETURN: Status from callback(s)
137 *
138 * DESCRIPTION: Walk the entire parse tree.
139 *
140 ******************************************************************************/
141
142 void
AcpiDmWalkParseTree(ACPI_PARSE_OBJECT * Op,ASL_WALK_CALLBACK DescendingCallback,ASL_WALK_CALLBACK AscendingCallback,void * Context)143 AcpiDmWalkParseTree (
144 ACPI_PARSE_OBJECT *Op,
145 ASL_WALK_CALLBACK DescendingCallback,
146 ASL_WALK_CALLBACK AscendingCallback,
147 void *Context)
148 {
149 BOOLEAN NodePreviouslyVisited;
150 ACPI_PARSE_OBJECT *StartOp = Op;
151 ACPI_STATUS Status;
152 ACPI_PARSE_OBJECT *Next;
153 ACPI_OP_WALK_INFO *Info = Context;
154
155
156 Info->Level = 0;
157 NodePreviouslyVisited = FALSE;
158
159 while (Op)
160 {
161 if (NodePreviouslyVisited)
162 {
163 if (AscendingCallback)
164 {
165 Status = AscendingCallback (Op, Info->Level, Context);
166 if (ACPI_FAILURE (Status))
167 {
168 return;
169 }
170 }
171 }
172 else
173 {
174 /* Let the callback process the node */
175
176 Status = DescendingCallback (Op, Info->Level, Context);
177 if (ACPI_SUCCESS (Status))
178 {
179 /* Visit children first, once */
180
181 Next = AcpiPsGetArg (Op, 0);
182 if (Next)
183 {
184 Info->Level++;
185 Op = Next;
186 continue;
187 }
188 }
189 else if (Status != AE_CTRL_DEPTH)
190 {
191 /* Exit immediately on any error */
192
193 return;
194 }
195 }
196
197 /* Terminate walk at start op */
198
199 if (Op == StartOp)
200 {
201 break;
202 }
203
204 /* No more children, re-visit this node */
205
206 if (!NodePreviouslyVisited)
207 {
208 NodePreviouslyVisited = TRUE;
209 continue;
210 }
211
212 /* No more children, visit peers */
213
214 if (Op->Common.Next)
215 {
216 Op = Op->Common.Next;
217 NodePreviouslyVisited = FALSE;
218 }
219 else
220 {
221 /* No peers, re-visit parent */
222
223 if (Info->Level != 0 )
224 {
225 Info->Level--;
226 }
227
228 Op = Op->Common.Parent;
229 NodePreviouslyVisited = TRUE;
230 }
231 }
232
233 /* If we get here, the walk completed with no errors */
234
235 return;
236 }
237
238
239 /*******************************************************************************
240 *
241 * FUNCTION: AcpiDmBlockType
242 *
243 * PARAMETERS: Op - Object to be examined
244 *
245 * RETURN: BlockType - not a block, parens, braces, or even both.
246 *
247 * DESCRIPTION: Type of block for this op (parens or braces)
248 *
249 ******************************************************************************/
250
251 static UINT32
AcpiDmBlockType(ACPI_PARSE_OBJECT * Op)252 AcpiDmBlockType (
253 ACPI_PARSE_OBJECT *Op)
254 {
255 const ACPI_OPCODE_INFO *OpInfo;
256
257
258 if (!Op)
259 {
260 return (BLOCK_NONE);
261 }
262
263 switch (Op->Common.AmlOpcode)
264 {
265 case AML_ELSE_OP:
266
267 return (BLOCK_BRACE);
268
269 case AML_METHOD_OP:
270 case AML_DEVICE_OP:
271 case AML_SCOPE_OP:
272 case AML_PROCESSOR_OP:
273 case AML_POWER_RES_OP:
274 case AML_THERMAL_ZONE_OP:
275 case AML_IF_OP:
276 case AML_WHILE_OP:
277 case AML_FIELD_OP:
278 case AML_INDEX_FIELD_OP:
279 case AML_BANK_FIELD_OP:
280
281 return (BLOCK_PAREN | BLOCK_BRACE);
282
283 case AML_BUFFER_OP:
284
285 if ((Op->Common.DisasmOpcode == ACPI_DASM_UNICODE) ||
286 (Op->Common.DisasmOpcode == ACPI_DASM_UUID) ||
287 (Op->Common.DisasmOpcode == ACPI_DASM_PLD_METHOD))
288 {
289 return (BLOCK_NONE);
290 }
291
292 /*lint -fallthrough */
293
294 case AML_PACKAGE_OP:
295 case AML_VAR_PACKAGE_OP:
296
297 return (BLOCK_PAREN | BLOCK_BRACE);
298
299 case AML_EVENT_OP:
300
301 return (BLOCK_PAREN);
302
303 case AML_INT_METHODCALL_OP:
304
305 if (Op->Common.Parent &&
306 ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
307 (Op->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP)))
308 {
309 /* This is a reference to a method, not an invocation */
310
311 return (BLOCK_NONE);
312 }
313
314 /*lint -fallthrough */
315
316 default:
317
318 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
319 if (OpInfo->Flags & AML_HAS_ARGS)
320 {
321 return (BLOCK_PAREN);
322 }
323
324 return (BLOCK_NONE);
325 }
326 }
327
328
329 /*******************************************************************************
330 *
331 * FUNCTION: AcpiDmListType
332 *
333 * PARAMETERS: Op - Object to be examined
334 *
335 * RETURN: ListType - has commas or not.
336 *
337 * DESCRIPTION: Type of block for this op (parens or braces)
338 *
339 ******************************************************************************/
340
341 UINT32
AcpiDmListType(ACPI_PARSE_OBJECT * Op)342 AcpiDmListType (
343 ACPI_PARSE_OBJECT *Op)
344 {
345 const ACPI_OPCODE_INFO *OpInfo;
346
347
348 if (!Op)
349 {
350 return (BLOCK_NONE);
351 }
352
353 switch (Op->Common.AmlOpcode)
354 {
355
356 case AML_ELSE_OP:
357 case AML_METHOD_OP:
358 case AML_DEVICE_OP:
359 case AML_SCOPE_OP:
360 case AML_POWER_RES_OP:
361 case AML_PROCESSOR_OP:
362 case AML_THERMAL_ZONE_OP:
363 case AML_IF_OP:
364 case AML_WHILE_OP:
365 case AML_FIELD_OP:
366 case AML_INDEX_FIELD_OP:
367 case AML_BANK_FIELD_OP:
368
369 return (BLOCK_NONE);
370
371 case AML_BUFFER_OP:
372 case AML_PACKAGE_OP:
373 case AML_VAR_PACKAGE_OP:
374
375 return (BLOCK_COMMA_LIST);
376
377 default:
378
379 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
380 if (OpInfo->Flags & AML_HAS_ARGS)
381 {
382 return (BLOCK_COMMA_LIST);
383 }
384
385 return (BLOCK_NONE);
386 }
387 }
388
389
390 /*******************************************************************************
391 *
392 * FUNCTION: AcpiDmDescendingOp
393 *
394 * PARAMETERS: ASL_WALK_CALLBACK
395 *
396 * RETURN: Status
397 *
398 * DESCRIPTION: First visitation of a parse object during tree descent.
399 * Decode opcode name and begin parameter list(s), if any.
400 *
401 ******************************************************************************/
402
403 static ACPI_STATUS
AcpiDmDescendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)404 AcpiDmDescendingOp (
405 ACPI_PARSE_OBJECT *Op,
406 UINT32 Level,
407 void *Context)
408 {
409 ACPI_OP_WALK_INFO *Info = Context;
410 const ACPI_OPCODE_INFO *OpInfo;
411 UINT32 Name;
412 ACPI_PARSE_OBJECT *NextOp;
413 ACPI_PARSE_OBJECT *NextOp2;
414 UINT32 AmlOffset;
415
416
417 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
418
419 /* Listing support to dump the AML code after the ASL statement */
420
421 if (AcpiGbl_DmOpt_Listing)
422 {
423 /* We only care about these classes of objects */
424
425 if ((OpInfo->Class == AML_CLASS_NAMED_OBJECT) ||
426 (OpInfo->Class == AML_CLASS_CONTROL) ||
427 (OpInfo->Class == AML_CLASS_CREATE) ||
428 ((OpInfo->Class == AML_CLASS_EXECUTE) && (!Op->Common.Next)))
429 {
430 if (AcpiGbl_DmOpt_Listing && Info->PreviousAml)
431 {
432 /* Dump the AML byte code for the previous Op */
433
434 if (Op->Common.Aml > Info->PreviousAml)
435 {
436 AcpiOsPrintf ("\n");
437 AcpiUtDumpBuffer (
438 (Info->StartAml + Info->AmlOffset),
439 (Op->Common.Aml - Info->PreviousAml),
440 DB_BYTE_DISPLAY, Info->AmlOffset);
441 AcpiOsPrintf ("\n");
442 }
443
444 Info->AmlOffset = (Op->Common.Aml - Info->StartAml);
445 }
446
447 Info->PreviousAml = Op->Common.Aml;
448 }
449 }
450
451 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE)
452 {
453 /* Ignore this op -- it was handled elsewhere */
454
455 return (AE_CTRL_DEPTH);
456 }
457
458 if (Op->Common.AmlOpcode == AML_IF_OP)
459 {
460 NextOp = AcpiPsGetDepthNext (NULL, Op);
461 if (NextOp)
462 {
463 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
464
465 /* Don't emit the actual embedded externals unless asked */
466
467 if (!AcpiGbl_DmEmitExternalOpcodes)
468 {
469 /*
470 * A Zero predicate indicates the possibility of one or more
471 * External() opcodes within the If() block.
472 */
473 if (NextOp->Common.AmlOpcode == AML_ZERO_OP)
474 {
475 NextOp2 = NextOp->Common.Next;
476
477 if (NextOp2 &&
478 (NextOp2->Common.AmlOpcode == AML_EXTERNAL_OP))
479 {
480 /* Ignore the If 0 block and all children */
481
482 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
483 return (AE_CTRL_DEPTH);
484 }
485 }
486 }
487 }
488 }
489
490 /* Level 0 is at the Definition Block level */
491
492 if (Level == 0)
493 {
494 /* In verbose mode, print the AML offset, opcode and depth count */
495
496 if (Info->WalkState)
497 {
498 AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml,
499 Info->WalkState->ParserState.AmlStart);
500 if (AcpiGbl_DmOpt_Verbose)
501 {
502 AcpiOsPrintf (DB_FULL_OP_INFO,
503 (Info->WalkState->MethodNode ?
504 Info->WalkState->MethodNode->Name.Ascii : " "),
505 AmlOffset, (UINT32) Op->Common.AmlOpcode);
506 }
507 }
508
509 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
510 {
511 /* This is the beginning of the Definition Block */
512
513 AcpiOsPrintf ("{\n");
514
515 /* Emit all External() declarations here */
516
517 AcpiDmEmitExternals ();
518 return (AE_OK);
519 }
520 }
521 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
522 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) &&
523 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_ELSEIF)) &&
524 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
525 {
526 /*
527 * This is a first-level element of a term list,
528 * indent a new line
529 */
530 switch (Op->Common.AmlOpcode)
531 {
532 case AML_NOOP_OP:
533 /*
534 * Optionally just ignore this opcode. Some tables use
535 * NoOp opcodes for "padding" out packages that the BIOS
536 * changes dynamically. This can leave hundreds or
537 * thousands of NoOp opcodes that if disassembled,
538 * cannot be compiled because they are syntactically
539 * incorrect.
540 */
541 if (AcpiGbl_IgnoreNoopOperator)
542 {
543 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
544 return (AE_OK);
545 }
546
547 /* Fallthrough */
548
549 default:
550
551 AcpiDmIndent (Level);
552 break;
553 }
554
555 Info->LastLevel = Level;
556 Info->Count = 0;
557 }
558
559 /*
560 * This is an inexpensive mechanism to try and keep lines from getting
561 * too long. When the limit is hit, start a new line at the previous
562 * indent plus one. A better but more expensive mechanism would be to
563 * keep track of the current column.
564 */
565 Info->Count++;
566 if (Info->Count /* +Info->LastLevel */ > 12)
567 {
568 Info->Count = 0;
569 AcpiOsPrintf ("\n");
570 AcpiDmIndent (Info->LastLevel + 1);
571 }
572
573 /* If ASL+ is enabled, check for a C-style operator */
574
575 if (AcpiDmCheckForSymbolicOpcode (Op, Info))
576 {
577 return (AE_OK);
578 }
579
580 /* Print the opcode name */
581
582 AcpiDmDisassembleOneOp (NULL, Info, Op);
583
584 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) ||
585 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP))
586 {
587 return (AE_OK);
588 }
589
590 if ((Op->Common.AmlOpcode == AML_NAME_OP) ||
591 (Op->Common.AmlOpcode == AML_RETURN_OP))
592 {
593 Info->Level--;
594 }
595
596 /* Start the opcode argument list if necessary */
597
598 if ((OpInfo->Flags & AML_HAS_ARGS) ||
599 (Op->Common.AmlOpcode == AML_EVENT_OP))
600 {
601 /* This opcode has an argument list */
602
603 if (AcpiDmBlockType (Op) & BLOCK_PAREN)
604 {
605 AcpiOsPrintf (" (");
606 }
607
608 /* If this is a named opcode, print the associated name value */
609
610 if (OpInfo->Flags & AML_NAMED)
611 {
612 switch (Op->Common.AmlOpcode)
613 {
614 case AML_ALIAS_OP:
615
616 NextOp = AcpiPsGetDepthNext (NULL, Op);
617 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
618 AcpiDmNamestring (NextOp->Common.Value.Name);
619 AcpiOsPrintf (", ");
620
621 /*lint -fallthrough */
622
623 default:
624
625 Name = AcpiPsGetName (Op);
626 if (Op->Named.Path)
627 {
628 AcpiDmNamestring ((char *) Op->Named.Path);
629 }
630 else
631 {
632 AcpiDmDumpName (Name);
633 }
634
635 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP)
636 {
637 if (AcpiGbl_DmOpt_Verbose)
638 {
639 (void) AcpiPsDisplayObjectPathname (NULL, Op);
640 }
641 }
642 break;
643 }
644
645 switch (Op->Common.AmlOpcode)
646 {
647 case AML_METHOD_OP:
648
649 AcpiDmMethodFlags (Op);
650 AcpiOsPrintf (")");
651
652 /* Emit description comment for Method() with a predefined ACPI name */
653
654 AcpiDmPredefinedDescription (Op);
655 break;
656
657 case AML_NAME_OP:
658
659 /* Check for _HID and related EISAID() */
660
661 AcpiDmCheckForHardwareId (Op);
662 AcpiOsPrintf (", ");
663 break;
664
665 case AML_REGION_OP:
666
667 AcpiDmRegionFlags (Op);
668 break;
669
670 case AML_POWER_RES_OP:
671
672 /* Mark the next two Ops as part of the parameter list */
673
674 AcpiOsPrintf (", ");
675 NextOp = AcpiPsGetDepthNext (NULL, Op);
676 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
677
678 NextOp = NextOp->Common.Next;
679 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
680 return (AE_OK);
681
682 case AML_PROCESSOR_OP:
683
684 /* Mark the next three Ops as part of the parameter list */
685
686 AcpiOsPrintf (", ");
687 NextOp = AcpiPsGetDepthNext (NULL, Op);
688 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
689
690 NextOp = NextOp->Common.Next;
691 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
692
693 NextOp = NextOp->Common.Next;
694 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
695 return (AE_OK);
696
697 case AML_MUTEX_OP:
698 case AML_DATA_REGION_OP:
699
700 AcpiOsPrintf (", ");
701 return (AE_OK);
702
703 case AML_EVENT_OP:
704 case AML_ALIAS_OP:
705
706 return (AE_OK);
707
708 case AML_SCOPE_OP:
709 case AML_DEVICE_OP:
710 case AML_THERMAL_ZONE_OP:
711
712 AcpiOsPrintf (")");
713 break;
714
715 default:
716
717 AcpiOsPrintf ("*** Unhandled named opcode %X\n",
718 Op->Common.AmlOpcode);
719 break;
720 }
721 }
722
723 else switch (Op->Common.AmlOpcode)
724 {
725 case AML_FIELD_OP:
726 case AML_BANK_FIELD_OP:
727 case AML_INDEX_FIELD_OP:
728
729 Info->BitOffset = 0;
730
731 /* Name of the parent OperationRegion */
732
733 NextOp = AcpiPsGetDepthNext (NULL, Op);
734 AcpiDmNamestring (NextOp->Common.Value.Name);
735 AcpiOsPrintf (", ");
736 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
737
738 switch (Op->Common.AmlOpcode)
739 {
740 case AML_BANK_FIELD_OP:
741
742 /* Namestring - Bank Name */
743
744 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
745 AcpiDmNamestring (NextOp->Common.Value.Name);
746 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
747 AcpiOsPrintf (", ");
748
749 /*
750 * Bank Value. This is a TermArg in the middle of the parameter
751 * list, must handle it here.
752 *
753 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMETER_LIST
754 * eliminates newline in the output.
755 */
756 NextOp = NextOp->Common.Next;
757
758 Info->Flags = ACPI_PARSEOP_PARAMETER_LIST;
759 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp,
760 AcpiDmAscendingOp, Info);
761 Info->Flags = 0;
762 Info->Level = Level;
763
764 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
765 AcpiOsPrintf (", ");
766 break;
767
768 case AML_INDEX_FIELD_OP:
769
770 /* Namestring - Data Name */
771
772 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
773 AcpiDmNamestring (NextOp->Common.Value.Name);
774 AcpiOsPrintf (", ");
775 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
776 break;
777
778 default:
779
780 break;
781 }
782
783 AcpiDmFieldFlags (NextOp);
784 break;
785
786 case AML_BUFFER_OP:
787
788 /* The next op is the size parameter */
789
790 NextOp = AcpiPsGetDepthNext (NULL, Op);
791 if (!NextOp)
792 {
793 /* Single-step support */
794
795 return (AE_OK);
796 }
797
798 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE)
799 {
800 /*
801 * We have a resource list. Don't need to output
802 * the buffer size Op. Open up a new block
803 */
804 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
805 NextOp = NextOp->Common.Next;
806 AcpiOsPrintf (")");
807
808 /* Emit description comment for Name() with a predefined ACPI name */
809
810 AcpiDmPredefinedDescription (Op->Asl.Parent);
811
812 AcpiOsPrintf ("\n");
813 AcpiDmIndent (Info->Level);
814 AcpiOsPrintf ("{\n");
815 return (AE_OK);
816 }
817
818 /* Normal Buffer, mark size as in the parameter list */
819
820 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
821 return (AE_OK);
822
823 case AML_IF_OP:
824 case AML_VAR_PACKAGE_OP:
825 case AML_WHILE_OP:
826
827 /* The next op is the size or predicate parameter */
828
829 NextOp = AcpiPsGetDepthNext (NULL, Op);
830 if (NextOp)
831 {
832 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
833 }
834 return (AE_OK);
835
836 case AML_PACKAGE_OP:
837
838 /* The next op is the size parameter */
839
840 NextOp = AcpiPsGetDepthNext (NULL, Op);
841 if (NextOp)
842 {
843 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST;
844 }
845 return (AE_OK);
846
847 case AML_MATCH_OP:
848
849 AcpiDmMatchOp (Op);
850 break;
851
852 default:
853
854 break;
855 }
856
857 if (AcpiDmBlockType (Op) & BLOCK_BRACE)
858 {
859 AcpiOsPrintf ("\n");
860 AcpiDmIndent (Level);
861 AcpiOsPrintf ("{\n");
862 }
863 }
864
865 return (AE_OK);
866 }
867
868
869 /*******************************************************************************
870 *
871 * FUNCTION: AcpiDmAscendingOp
872 *
873 * PARAMETERS: ASL_WALK_CALLBACK
874 *
875 * RETURN: Status
876 *
877 * DESCRIPTION: Second visitation of a parse object, during ascent of parse
878 * tree. Close out any parameter lists and complete the opcode.
879 *
880 ******************************************************************************/
881
882 static ACPI_STATUS
AcpiDmAscendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)883 AcpiDmAscendingOp (
884 ACPI_PARSE_OBJECT *Op,
885 UINT32 Level,
886 void *Context)
887 {
888 ACPI_OP_WALK_INFO *Info = Context;
889 ACPI_PARSE_OBJECT *ParentOp;
890
891
892 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE)
893 {
894 /* Ignore this op -- it was handled elsewhere */
895
896 return (AE_OK);
897 }
898
899 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP))
900 {
901 /* Indicates the end of the current descriptor block (table) */
902
903 AcpiOsPrintf ("}\n\n");
904 return (AE_OK);
905 }
906
907 switch (AcpiDmBlockType (Op))
908 {
909 case BLOCK_PAREN:
910
911 /* Completed an op that has arguments, add closing paren if needed */
912
913 AcpiDmCloseOperator (Op);
914
915 if (Op->Common.AmlOpcode == AML_NAME_OP)
916 {
917 /* Emit description comment for Name() with a predefined ACPI name */
918
919 AcpiDmPredefinedDescription (Op);
920 }
921 else
922 {
923 /* For Create* operators, attempt to emit resource tag description */
924
925 AcpiDmFieldPredefinedDescription (Op);
926 }
927
928 /* Decode Notify() values */
929
930 if (Op->Common.AmlOpcode == AML_NOTIFY_OP)
931 {
932 AcpiDmNotifyDescription (Op);
933 }
934
935 AcpiDmDisplayTargetPathname (Op);
936
937 /* Could be a nested operator, check if comma required */
938
939 if (!AcpiDmCommaIfListMember (Op))
940 {
941 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
942 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) &&
943 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
944 {
945 /*
946 * This is a first-level element of a term list
947 * start a new line
948 */
949 if (!(Info->Flags & ACPI_PARSEOP_PARAMETER_LIST))
950 {
951 AcpiOsPrintf ("\n");
952 }
953 }
954 }
955 break;
956
957 case BLOCK_BRACE:
958 case (BLOCK_BRACE | BLOCK_PAREN):
959
960 /* Completed an op that has a term list, add closing brace */
961
962 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)
963 {
964 AcpiOsPrintf ("}");
965 }
966 else
967 {
968 AcpiDmIndent (Level);
969 AcpiOsPrintf ("}");
970 }
971
972 AcpiDmCommaIfListMember (Op);
973
974 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN)
975 {
976 AcpiOsPrintf ("\n");
977 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST))
978 {
979 if ((Op->Common.AmlOpcode == AML_IF_OP) &&
980 (Op->Common.Next) &&
981 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP))
982 {
983 break;
984 }
985
986 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
987 (!Op->Common.Next))
988 {
989 break;
990 }
991 AcpiOsPrintf ("\n");
992 }
993 }
994 break;
995
996 case BLOCK_NONE:
997 default:
998
999 /* Could be a nested operator, check if comma required */
1000
1001 if (!AcpiDmCommaIfListMember (Op))
1002 {
1003 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
1004 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) &&
1005 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
1006 {
1007 /*
1008 * This is a first-level element of a term list
1009 * start a new line
1010 */
1011 AcpiOsPrintf ("\n");
1012 }
1013 }
1014 else if (Op->Common.Parent)
1015 {
1016 switch (Op->Common.Parent->Common.AmlOpcode)
1017 {
1018 case AML_PACKAGE_OP:
1019 case AML_VAR_PACKAGE_OP:
1020
1021 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST))
1022 {
1023 AcpiOsPrintf ("\n");
1024 }
1025 break;
1026
1027 default:
1028
1029 break;
1030 }
1031 }
1032 break;
1033 }
1034
1035 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)
1036 {
1037 if ((Op->Common.Next) &&
1038 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST))
1039 {
1040 return (AE_OK);
1041 }
1042
1043 /*
1044 * The parent Op is guaranteed to be valid because of the flag
1045 * ACPI_PARSEOP_PARAMETER_LIST -- which means that this op is part of
1046 * a parameter list and thus has a valid parent.
1047 */
1048 ParentOp = Op->Common.Parent;
1049
1050 /*
1051 * Just completed a parameter node for something like "Buffer (param)".
1052 * Close the paren and open up the term list block with a brace
1053 */
1054 if (Op->Common.Next)
1055 {
1056 AcpiOsPrintf (")");
1057
1058 /*
1059 * Emit a description comment for a Name() operator that is a
1060 * predefined ACPI name. Must check the grandparent.
1061 */
1062 ParentOp = ParentOp->Common.Parent;
1063 if (ParentOp &&
1064 (ParentOp->Asl.AmlOpcode == AML_NAME_OP))
1065 {
1066 AcpiDmPredefinedDescription (ParentOp);
1067 }
1068
1069 AcpiOsPrintf ("\n");
1070 AcpiDmIndent (Level - 1);
1071 AcpiOsPrintf ("{\n");
1072 }
1073 else
1074 {
1075 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST;
1076 AcpiOsPrintf (") {");
1077 }
1078 }
1079
1080 if ((Op->Common.AmlOpcode == AML_NAME_OP) ||
1081 (Op->Common.AmlOpcode == AML_RETURN_OP))
1082 {
1083 Info->Level++;
1084 }
1085
1086 /*
1087 * For ASL+, check for and emit a C-style symbol. If valid, the
1088 * symbol string has been deferred until after the first operand
1089 */
1090 if (AcpiGbl_CstyleDisassembly)
1091 {
1092 if (Op->Asl.OperatorSymbol)
1093 {
1094 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol);
1095 Op->Asl.OperatorSymbol = NULL;
1096 }
1097 }
1098
1099 return (AE_OK);
1100 }
1101