1 /*******************************************************************************
2 *
3 * Module Name: dmwalk - AML disassembly tree walk
4 *
5 ******************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2015, 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 <contrib/dev/acpica/include/acpi.h>
45 #include <contrib/dev/acpica/include/accommon.h>
46 #include <contrib/dev/acpica/include/acparser.h>
47 #include <contrib/dev/acpica/include/amlcode.h>
48 #include <contrib/dev/acpica/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 UINT32 AmlOffset;
414
415
416 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
417
418 /* Listing support to dump the AML code after the ASL statement */
419
420 if (AcpiGbl_DmOpt_Listing)
421 {
422 /* We only care about these classes of objects */
423
424 if ((OpInfo->Class == AML_CLASS_NAMED_OBJECT) ||
425 (OpInfo->Class == AML_CLASS_CONTROL) ||
426 (OpInfo->Class == AML_CLASS_CREATE) ||
427 ((OpInfo->Class == AML_CLASS_EXECUTE) && (!Op->Common.Next)))
428 {
429 if (AcpiGbl_DmOpt_Listing && Info->PreviousAml)
430 {
431 /* Dump the AML byte code for the previous Op */
432
433 if (Op->Common.Aml > Info->PreviousAml)
434 {
435 AcpiOsPrintf ("\n");
436 AcpiUtDumpBuffer (
437 (Info->StartAml + Info->AmlOffset),
438 (Op->Common.Aml - Info->PreviousAml),
439 DB_BYTE_DISPLAY,
440 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 /* Level 0 is at the Definition Block level */
459
460 if (Level == 0)
461 {
462 /* In verbose mode, print the AML offset, opcode and depth count */
463
464 if (Info->WalkState)
465 {
466 AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml,
467 Info->WalkState->ParserState.AmlStart);
468 if (AcpiGbl_DmOpt_Verbose)
469 {
470 AcpiOsPrintf (DB_FULL_OP_INFO,
471 (Info->WalkState->MethodNode ?
472 Info->WalkState->MethodNode->Name.Ascii : " "),
473 AmlOffset, (UINT32) Op->Common.AmlOpcode);
474 }
475 }
476
477 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
478 {
479 /* This is the beginning of the Definition Block */
480
481 AcpiOsPrintf ("{\n");
482
483 /* Emit all External() declarations here */
484
485 AcpiDmEmitExternals ();
486 return (AE_OK);
487 }
488 }
489 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
490 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) &&
491 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
492 {
493 /*
494 * This is a first-level element of a term list,
495 * indent a new line
496 */
497 switch (Op->Common.AmlOpcode)
498 {
499 case AML_NOOP_OP:
500 /*
501 * Optionally just ignore this opcode. Some tables use
502 * NoOp opcodes for "padding" out packages that the BIOS
503 * changes dynamically. This can leave hundreds or
504 * thousands of NoOp opcodes that if disassembled,
505 * cannot be compiled because they are syntactically
506 * incorrect.
507 */
508 if (AcpiGbl_IgnoreNoopOperator)
509 {
510 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
511 return (AE_OK);
512 }
513
514 /* Fallthrough */
515
516 default:
517
518 AcpiDmIndent (Level);
519 break;
520 }
521
522 Info->LastLevel = Level;
523 Info->Count = 0;
524 }
525
526 /*
527 * This is an inexpensive mechanism to try and keep lines from getting
528 * too long. When the limit is hit, start a new line at the previous
529 * indent plus one. A better but more expensive mechanism would be to
530 * keep track of the current column.
531 */
532 Info->Count++;
533 if (Info->Count /* +Info->LastLevel */ > 12)
534 {
535 Info->Count = 0;
536 AcpiOsPrintf ("\n");
537 AcpiDmIndent (Info->LastLevel + 1);
538 }
539
540 /* If ASL+ is enabled, check for a C-style operator */
541
542 if (AcpiDmCheckForSymbolicOpcode (Op, Info))
543 {
544 return (AE_OK);
545 }
546
547 /* Print the opcode name */
548
549 AcpiDmDisassembleOneOp (NULL, Info, Op);
550
551 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) ||
552 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP))
553 {
554 return (AE_OK);
555 }
556
557 if ((Op->Common.AmlOpcode == AML_NAME_OP) ||
558 (Op->Common.AmlOpcode == AML_RETURN_OP))
559 {
560 Info->Level--;
561 }
562
563 /* Start the opcode argument list if necessary */
564
565 if ((OpInfo->Flags & AML_HAS_ARGS) ||
566 (Op->Common.AmlOpcode == AML_EVENT_OP))
567 {
568 /* This opcode has an argument list */
569
570 if (AcpiDmBlockType (Op) & BLOCK_PAREN)
571 {
572 AcpiOsPrintf (" (");
573 }
574
575 /* If this is a named opcode, print the associated name value */
576
577 if (OpInfo->Flags & AML_NAMED)
578 {
579 switch (Op->Common.AmlOpcode)
580 {
581 case AML_ALIAS_OP:
582
583 NextOp = AcpiPsGetDepthNext (NULL, Op);
584 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
585 AcpiDmNamestring (NextOp->Common.Value.Name);
586 AcpiOsPrintf (", ");
587
588 /*lint -fallthrough */
589
590 default:
591
592 Name = AcpiPsGetName (Op);
593 if (Op->Named.Path)
594 {
595 AcpiDmNamestring ((char *) Op->Named.Path);
596 }
597 else
598 {
599 AcpiDmDumpName (Name);
600 }
601
602 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP)
603 {
604 if (AcpiGbl_DmOpt_Verbose)
605 {
606 (void) AcpiPsDisplayObjectPathname (NULL, Op);
607 }
608 }
609 break;
610 }
611
612 switch (Op->Common.AmlOpcode)
613 {
614 case AML_METHOD_OP:
615
616 AcpiDmMethodFlags (Op);
617 AcpiOsPrintf (")");
618
619 /* Emit description comment for Method() with a predefined ACPI name */
620
621 AcpiDmPredefinedDescription (Op);
622 break;
623
624 case AML_NAME_OP:
625
626 /* Check for _HID and related EISAID() */
627
628 AcpiDmCheckForHardwareId (Op);
629 AcpiOsPrintf (", ");
630 break;
631
632 case AML_REGION_OP:
633
634 AcpiDmRegionFlags (Op);
635 break;
636
637 case AML_POWER_RES_OP:
638
639 /* Mark the next two Ops as part of the parameter list */
640
641 AcpiOsPrintf (", ");
642 NextOp = AcpiPsGetDepthNext (NULL, Op);
643 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
644
645 NextOp = NextOp->Common.Next;
646 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
647 return (AE_OK);
648
649 case AML_PROCESSOR_OP:
650
651 /* Mark the next three Ops as part of the parameter list */
652
653 AcpiOsPrintf (", ");
654 NextOp = AcpiPsGetDepthNext (NULL, Op);
655 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
656
657 NextOp = NextOp->Common.Next;
658 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
659
660 NextOp = NextOp->Common.Next;
661 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
662 return (AE_OK);
663
664 case AML_MUTEX_OP:
665 case AML_DATA_REGION_OP:
666
667 AcpiOsPrintf (", ");
668 return (AE_OK);
669
670 case AML_EVENT_OP:
671 case AML_ALIAS_OP:
672
673 return (AE_OK);
674
675 case AML_SCOPE_OP:
676 case AML_DEVICE_OP:
677 case AML_THERMAL_ZONE_OP:
678
679 AcpiOsPrintf (")");
680 break;
681
682 default:
683
684 AcpiOsPrintf ("*** Unhandled named opcode %X\n",
685 Op->Common.AmlOpcode);
686 break;
687 }
688 }
689
690 else switch (Op->Common.AmlOpcode)
691 {
692 case AML_FIELD_OP:
693 case AML_BANK_FIELD_OP:
694 case AML_INDEX_FIELD_OP:
695
696 Info->BitOffset = 0;
697
698 /* Name of the parent OperationRegion */
699
700 NextOp = AcpiPsGetDepthNext (NULL, Op);
701 AcpiDmNamestring (NextOp->Common.Value.Name);
702 AcpiOsPrintf (", ");
703 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
704
705 switch (Op->Common.AmlOpcode)
706 {
707 case AML_BANK_FIELD_OP:
708
709 /* Namestring - Bank Name */
710
711 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
712 AcpiDmNamestring (NextOp->Common.Value.Name);
713 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
714 AcpiOsPrintf (", ");
715
716 /*
717 * Bank Value. This is a TermArg in the middle of the parameter
718 * list, must handle it here.
719 *
720 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMLIST
721 * eliminates newline in the output.
722 */
723 NextOp = NextOp->Common.Next;
724
725 Info->Flags = ACPI_PARSEOP_PARAMLIST;
726 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp,
727 AcpiDmAscendingOp, Info);
728 Info->Flags = 0;
729 Info->Level = Level;
730
731 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
732 AcpiOsPrintf (", ");
733 break;
734
735 case AML_INDEX_FIELD_OP:
736
737 /* Namestring - Data Name */
738
739 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
740 AcpiDmNamestring (NextOp->Common.Value.Name);
741 AcpiOsPrintf (", ");
742 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
743 break;
744
745 default:
746
747 break;
748 }
749
750 AcpiDmFieldFlags (NextOp);
751 break;
752
753 case AML_BUFFER_OP:
754
755 /* The next op is the size parameter */
756
757 NextOp = AcpiPsGetDepthNext (NULL, Op);
758 if (!NextOp)
759 {
760 /* Single-step support */
761
762 return (AE_OK);
763 }
764
765 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE)
766 {
767 /*
768 * We have a resource list. Don't need to output
769 * the buffer size Op. Open up a new block
770 */
771 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
772 NextOp = NextOp->Common.Next;
773 AcpiOsPrintf (")");
774
775 /* Emit description comment for Name() with a predefined ACPI name */
776
777 AcpiDmPredefinedDescription (Op->Asl.Parent);
778
779 AcpiOsPrintf ("\n");
780 AcpiDmIndent (Info->Level);
781 AcpiOsPrintf ("{\n");
782 return (AE_OK);
783 }
784
785 /* Normal Buffer, mark size as in the parameter list */
786
787 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
788 return (AE_OK);
789
790 case AML_VAR_PACKAGE_OP:
791 case AML_IF_OP:
792 case AML_WHILE_OP:
793
794 /* The next op is the size or predicate parameter */
795
796 NextOp = AcpiPsGetDepthNext (NULL, Op);
797 if (NextOp)
798 {
799 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
800 }
801 return (AE_OK);
802
803 case AML_PACKAGE_OP:
804
805 /* The next op is the size parameter */
806
807 NextOp = AcpiPsGetDepthNext (NULL, Op);
808 if (NextOp)
809 {
810 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST;
811 }
812 return (AE_OK);
813
814 case AML_MATCH_OP:
815
816 AcpiDmMatchOp (Op);
817 break;
818
819 default:
820
821 break;
822 }
823
824 if (AcpiDmBlockType (Op) & BLOCK_BRACE)
825 {
826 AcpiOsPrintf ("\n");
827 AcpiDmIndent (Level);
828 AcpiOsPrintf ("{\n");
829 }
830 }
831
832 return (AE_OK);
833 }
834
835
836 /*******************************************************************************
837 *
838 * FUNCTION: AcpiDmAscendingOp
839 *
840 * PARAMETERS: ASL_WALK_CALLBACK
841 *
842 * RETURN: Status
843 *
844 * DESCRIPTION: Second visitation of a parse object, during ascent of parse
845 * tree. Close out any parameter lists and complete the opcode.
846 *
847 ******************************************************************************/
848
849 static ACPI_STATUS
AcpiDmAscendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)850 AcpiDmAscendingOp (
851 ACPI_PARSE_OBJECT *Op,
852 UINT32 Level,
853 void *Context)
854 {
855 ACPI_OP_WALK_INFO *Info = Context;
856 ACPI_PARSE_OBJECT *ParentOp;
857
858
859 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE)
860 {
861 /* Ignore this op -- it was handled elsewhere */
862
863 return (AE_OK);
864 }
865
866 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP))
867 {
868 /* Indicates the end of the current descriptor block (table) */
869
870 AcpiOsPrintf ("}\n\n");
871 return (AE_OK);
872 }
873
874 switch (AcpiDmBlockType (Op))
875 {
876 case BLOCK_PAREN:
877
878 /* Completed an op that has arguments, add closing paren if needed */
879
880 AcpiDmCloseOperator (Op);
881
882 if (Op->Common.AmlOpcode == AML_NAME_OP)
883 {
884 /* Emit description comment for Name() with a predefined ACPI name */
885
886 AcpiDmPredefinedDescription (Op);
887 }
888 else
889 {
890 /* For Create* operators, attempt to emit resource tag description */
891
892 AcpiDmFieldPredefinedDescription (Op);
893 }
894
895 /* Decode Notify() values */
896
897 if (Op->Common.AmlOpcode == AML_NOTIFY_OP)
898 {
899 AcpiDmNotifyDescription (Op);
900 }
901
902 AcpiDmDisplayTargetPathname (Op);
903
904 /* Could be a nested operator, check if comma required */
905
906 if (!AcpiDmCommaIfListMember (Op))
907 {
908 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
909 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) &&
910 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
911 {
912 /*
913 * This is a first-level element of a term list
914 * start a new line
915 */
916 if (!(Info->Flags & ACPI_PARSEOP_PARAMLIST))
917 {
918 AcpiOsPrintf ("\n");
919 }
920 }
921 }
922 break;
923
924 case BLOCK_BRACE:
925 case (BLOCK_BRACE | BLOCK_PAREN):
926
927 /* Completed an op that has a term list, add closing brace */
928
929 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)
930 {
931 AcpiOsPrintf ("}");
932 }
933 else
934 {
935 AcpiDmIndent (Level);
936 AcpiOsPrintf ("}");
937 }
938
939 AcpiDmCommaIfListMember (Op);
940
941 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN)
942 {
943 AcpiOsPrintf ("\n");
944 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST))
945 {
946 if ((Op->Common.AmlOpcode == AML_IF_OP) &&
947 (Op->Common.Next) &&
948 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP))
949 {
950 break;
951 }
952
953 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
954 (!Op->Common.Next))
955 {
956 break;
957 }
958 AcpiOsPrintf ("\n");
959 }
960 }
961 break;
962
963 case BLOCK_NONE:
964 default:
965
966 /* Could be a nested operator, check if comma required */
967
968 if (!AcpiDmCommaIfListMember (Op))
969 {
970 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) &&
971 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) &&
972 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP))
973 {
974 /*
975 * This is a first-level element of a term list
976 * start a new line
977 */
978 AcpiOsPrintf ("\n");
979 }
980 }
981 else if (Op->Common.Parent)
982 {
983 switch (Op->Common.Parent->Common.AmlOpcode)
984 {
985 case AML_PACKAGE_OP:
986 case AML_VAR_PACKAGE_OP:
987
988 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST))
989 {
990 AcpiOsPrintf ("\n");
991 }
992 break;
993
994 default:
995
996 break;
997 }
998 }
999 break;
1000 }
1001
1002 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)
1003 {
1004 if ((Op->Common.Next) &&
1005 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST))
1006 {
1007 return (AE_OK);
1008 }
1009
1010 /*
1011 * The parent Op is guaranteed to be valid because of the flag
1012 * ACPI_PARSEOP_PARAMLIST -- which means that this op is part of
1013 * a parameter list and thus has a valid parent.
1014 */
1015 ParentOp = Op->Common.Parent;
1016
1017 /*
1018 * Just completed a parameter node for something like "Buffer (param)".
1019 * Close the paren and open up the term list block with a brace
1020 */
1021 if (Op->Common.Next)
1022 {
1023 AcpiOsPrintf (")");
1024
1025 /*
1026 * Emit a description comment for a Name() operator that is a
1027 * predefined ACPI name. Must check the grandparent.
1028 */
1029 ParentOp = ParentOp->Common.Parent;
1030 if (ParentOp &&
1031 (ParentOp->Asl.AmlOpcode == AML_NAME_OP))
1032 {
1033 AcpiDmPredefinedDescription (ParentOp);
1034 }
1035
1036 AcpiOsPrintf ("\n");
1037 AcpiDmIndent (Level - 1);
1038 AcpiOsPrintf ("{\n");
1039 }
1040 else
1041 {
1042 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST;
1043 AcpiOsPrintf (") {");
1044 }
1045 }
1046
1047 if ((Op->Common.AmlOpcode == AML_NAME_OP) ||
1048 (Op->Common.AmlOpcode == AML_RETURN_OP))
1049 {
1050 Info->Level++;
1051 }
1052
1053 /*
1054 * For ASL+, check for and emit a C-style symbol. If valid, the
1055 * symbol string has been deferred until after the first operand
1056 */
1057 if (AcpiGbl_CstyleDisassembly)
1058 {
1059 if (Op->Asl.OperatorSymbol)
1060 {
1061 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol);
1062 Op->Asl.OperatorSymbol = NULL;
1063 }
1064 }
1065
1066 return (AE_OK);
1067 }
1068