1 /******************************************************************************
2 *
3 * Module Name: adwalk - Application-level disassembler parse tree walk routines
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2023, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "acparser.h"
155 #include "amlcode.h"
156 #include "acdisasm.h"
157 #include "acdispat.h"
158 #include "acnamesp.h"
159 #include "acapps.h"
160
161
162 #define _COMPONENT ACPI_TOOLS
163 ACPI_MODULE_NAME ("adwalk")
164
165 /*
166 * aslmap - opcode mappings and reserved method names
167 */
168 ACPI_OBJECT_TYPE
169 AslMapNamedOpcodeToDataType (
170 UINT16 Opcode);
171
172 /* Local prototypes */
173
174 static ACPI_STATUS
175 AcpiDmFindOrphanDescending (
176 ACPI_PARSE_OBJECT *Op,
177 UINT32 Level,
178 void *Context);
179
180 static ACPI_STATUS
181 AcpiDmDumpDescending (
182 ACPI_PARSE_OBJECT *Op,
183 UINT32 Level,
184 void *Context);
185
186 static ACPI_STATUS
187 AcpiDmXrefDescendingOp (
188 ACPI_PARSE_OBJECT *Op,
189 UINT32 Level,
190 void *Context);
191
192 static ACPI_STATUS
193 AcpiDmCommonAscendingOp (
194 ACPI_PARSE_OBJECT *Op,
195 UINT32 Level,
196 void *Context);
197
198 static ACPI_STATUS
199 AcpiDmLoadDescendingOp (
200 ACPI_PARSE_OBJECT *Op,
201 UINT32 Level,
202 void *Context);
203
204 static UINT32
205 AcpiDmInspectPossibleArgs (
206 UINT32 CurrentOpArgCount,
207 UINT32 TargetCount,
208 ACPI_PARSE_OBJECT *Op);
209
210 static ACPI_STATUS
211 AcpiDmCommonDescendingOp (
212 ACPI_PARSE_OBJECT *Op,
213 UINT32 Level,
214 void *Context);
215
216 static ACPI_STATUS
217 AcpiDmProcessResourceDescriptors (
218 ACPI_PARSE_OBJECT *Op,
219 UINT32 Level,
220 void *Context);
221
222 /*******************************************************************************
223 *
224 * FUNCTION: AcpiDmDumpTree
225 *
226 * PARAMETERS: Origin - Starting object
227 *
228 * RETURN: None
229 *
230 * DESCRIPTION: Parse tree walk to format and output the nodes
231 *
232 ******************************************************************************/
233
234 void
AcpiDmDumpTree(ACPI_PARSE_OBJECT * Origin)235 AcpiDmDumpTree (
236 ACPI_PARSE_OBJECT *Origin)
237 {
238 ACPI_OP_WALK_INFO Info;
239
240
241 if (!Origin)
242 {
243 return;
244 }
245
246 AcpiOsPrintf ("/*\nAML Parse Tree\n\n");
247 Info.Flags = 0;
248 Info.Count = 0;
249 Info.Level = 0;
250 Info.WalkState = NULL;
251
252 AcpiDmWalkParseTree (Origin, AcpiDmDumpDescending, NULL, &Info);
253 AcpiOsPrintf ("*/\n\n");
254 }
255
256
257 /*******************************************************************************
258 *
259 * FUNCTION: AcpiDmFindOrphanMethods
260 *
261 * PARAMETERS: Origin - Starting object
262 *
263 * RETURN: None
264 *
265 * DESCRIPTION: Parse tree walk to find "orphaned" method invocations -- methods
266 * that are not resolved in the namespace
267 *
268 ******************************************************************************/
269
270 void
AcpiDmFindOrphanMethods(ACPI_PARSE_OBJECT * Origin)271 AcpiDmFindOrphanMethods (
272 ACPI_PARSE_OBJECT *Origin)
273 {
274 ACPI_OP_WALK_INFO Info;
275
276
277 if (!Origin)
278 {
279 return;
280 }
281
282 Info.Flags = 0;
283 Info.Level = 0;
284 Info.WalkState = NULL;
285
286 AcpiDmWalkParseTree (Origin, AcpiDmFindOrphanDescending, NULL, &Info);
287 }
288
289
290 /*******************************************************************************
291 *
292 * FUNCTION: AcpiDmFinishNamespaceLoad
293 *
294 * PARAMETERS: ParseTreeRoot - Root of the parse tree
295 * NamespaceRoot - Root of the internal namespace
296 * OwnerId - OwnerId of the table to be disassembled
297 *
298 * RETURN: None
299 *
300 * DESCRIPTION: Load all namespace items that are created within control
301 * methods. Used before namespace cross reference
302 *
303 ******************************************************************************/
304
305 void
AcpiDmFinishNamespaceLoad(ACPI_PARSE_OBJECT * ParseTreeRoot,ACPI_NAMESPACE_NODE * NamespaceRoot,ACPI_OWNER_ID OwnerId)306 AcpiDmFinishNamespaceLoad (
307 ACPI_PARSE_OBJECT *ParseTreeRoot,
308 ACPI_NAMESPACE_NODE *NamespaceRoot,
309 ACPI_OWNER_ID OwnerId)
310 {
311 ACPI_STATUS Status;
312 ACPI_OP_WALK_INFO Info;
313 ACPI_WALK_STATE *WalkState;
314
315
316 if (!ParseTreeRoot)
317 {
318 return;
319 }
320
321 /* Create and initialize a new walk state */
322
323 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL);
324 if (!WalkState)
325 {
326 return;
327 }
328
329 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type,
330 WalkState);
331 if (ACPI_FAILURE (Status))
332 {
333 return;
334 }
335
336 Info.Flags = 0;
337 Info.Level = 0;
338 Info.WalkState = WalkState;
339
340 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmLoadDescendingOp,
341 AcpiDmCommonAscendingOp, &Info);
342 ACPI_FREE (WalkState);
343 }
344
345
346 /*******************************************************************************
347 *
348 * FUNCTION: AcpiDmCrossReferenceNamespace
349 *
350 * PARAMETERS: ParseTreeRoot - Root of the parse tree
351 * NamespaceRoot - Root of the internal namespace
352 * OwnerId - OwnerId of the table to be disassembled
353 *
354 * RETURN: None
355 *
356 * DESCRIPTION: Cross reference the namespace to create externals
357 *
358 ******************************************************************************/
359
360 void
AcpiDmCrossReferenceNamespace(ACPI_PARSE_OBJECT * ParseTreeRoot,ACPI_NAMESPACE_NODE * NamespaceRoot,ACPI_OWNER_ID OwnerId)361 AcpiDmCrossReferenceNamespace (
362 ACPI_PARSE_OBJECT *ParseTreeRoot,
363 ACPI_NAMESPACE_NODE *NamespaceRoot,
364 ACPI_OWNER_ID OwnerId)
365 {
366 ACPI_STATUS Status;
367 ACPI_OP_WALK_INFO Info;
368 ACPI_WALK_STATE *WalkState;
369
370
371 if (!ParseTreeRoot)
372 {
373 return;
374 }
375
376 /* Create and initialize a new walk state */
377
378 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL);
379 if (!WalkState)
380 {
381 return;
382 }
383
384 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type,
385 WalkState);
386 if (ACPI_FAILURE (Status))
387 {
388 return;
389 }
390
391 Info.Flags = 0;
392 Info.Level = 0;
393 Info.WalkState = WalkState;
394
395 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmXrefDescendingOp,
396 AcpiDmCommonAscendingOp, &Info);
397 ACPI_FREE (WalkState);
398 }
399
400
401 /*******************************************************************************
402 *
403 * FUNCTION: AcpiDmConvertParseObjects
404 *
405 * PARAMETERS: ParseTreeRoot - Root of the parse tree
406 * NamespaceRoot - Root of the internal namespace
407 *
408 * RETURN: None
409 *
410 * DESCRIPTION: Begin parse tree walk to perform conversions needed for
411 * disassembly. These include resource descriptors and switch/case
412 * operations.
413 *
414 ******************************************************************************/
415
416 void
AcpiDmConvertParseObjects(ACPI_PARSE_OBJECT * ParseTreeRoot,ACPI_NAMESPACE_NODE * NamespaceRoot)417 AcpiDmConvertParseObjects (
418 ACPI_PARSE_OBJECT *ParseTreeRoot,
419 ACPI_NAMESPACE_NODE *NamespaceRoot)
420 {
421 ACPI_STATUS Status;
422 ACPI_OP_WALK_INFO Info;
423 ACPI_WALK_STATE *WalkState;
424
425
426 if (!ParseTreeRoot)
427 {
428 return;
429 }
430
431 /* Create and initialize a new walk state */
432
433 WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL);
434 if (!WalkState)
435 {
436 return;
437 }
438
439 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type,
440 WalkState);
441 if (ACPI_FAILURE (Status))
442 {
443 ACPI_FREE (WalkState);
444 return;
445 }
446
447 Info.Flags = 0;
448 Info.Level = 0;
449 Info.WalkState = WalkState;
450
451 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmCommonDescendingOp,
452 AcpiDmCommonAscendingOp, &Info);
453 ACPI_FREE (WalkState);
454
455 if (AcpiGbl_TempListHead) {
456 AcpiDmClearTempList();
457 }
458
459 return;
460 }
461
462
463 /*******************************************************************************
464 *
465 * FUNCTION: AcpiDmDumpDescending
466 *
467 * PARAMETERS: ASL_WALK_CALLBACK
468 *
469 * RETURN: Status
470 *
471 * DESCRIPTION: Format and print contents of one parse Op.
472 *
473 ******************************************************************************/
474
475 static ACPI_STATUS
AcpiDmDumpDescending(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)476 AcpiDmDumpDescending (
477 ACPI_PARSE_OBJECT *Op,
478 UINT32 Level,
479 void *Context)
480 {
481 ACPI_OP_WALK_INFO *Info = Context;
482 char *Path;
483 ACPI_STATUS Status;
484
485
486 if (!Op)
487 {
488 return (AE_OK);
489 }
490
491 /* Most of the information (count, level, name) here */
492
493 Info->Count++;
494 AcpiOsPrintf ("% 5d [%2.2d] ", Info->Count, Level);
495 AcpiDmIndent (Level);
496 AcpiOsPrintf ("%-28s", AcpiPsGetOpcodeName (Op->Common.AmlOpcode));
497
498 /* Extra info is helpful */
499
500 switch (Op->Common.AmlOpcode)
501 {
502 case AML_BYTE_OP:
503
504 AcpiOsPrintf ("%2.2X", (UINT32) Op->Common.Value.Integer);
505 break;
506
507 case AML_WORD_OP:
508
509 AcpiOsPrintf ("%4.4X", (UINT32) Op->Common.Value.Integer);
510 break;
511
512 case AML_DWORD_OP:
513
514 AcpiOsPrintf ("%8.8X", (UINT32) Op->Common.Value.Integer);
515 break;
516
517 case AML_QWORD_OP:
518
519 AcpiOsPrintf ("%8.8X%8.8X", ACPI_FORMAT_UINT64 (Op->Common.Value.Integer));
520 break;
521
522 case AML_INT_NAMEPATH_OP:
523
524 if (Op->Common.Value.String)
525 {
526 Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String,
527 NULL, &Path);
528 if (ACPI_SUCCESS (Status))
529 {
530 AcpiOsPrintf ("%s %p", Path, Op->Common.Node);
531 ACPI_FREE (Path);
532 }
533 else
534 {
535 AcpiOsPrintf ("Could not externalize pathname for node [%4.4s]",
536 Op->Common.Node->Name.Ascii);
537 }
538 }
539 else
540 {
541 AcpiOsPrintf ("[NULL]");
542 }
543 break;
544
545 case AML_NAME_OP:
546 case AML_METHOD_OP:
547 case AML_DEVICE_OP:
548
549 AcpiOsPrintf ("%4.4s",
550 ACPI_CAST_PTR (char, &Op->Named.Name));
551 break;
552
553 case AML_INT_NAMEDFIELD_OP:
554
555 AcpiOsPrintf ("%4.4s Length: (bits) %8.8X%8.8X (bytes) %8.8X%8.8X",
556 ACPI_CAST_PTR (char, &Op->Named.Name),
557 ACPI_FORMAT_UINT64 (Op->Common.Value.Integer),
558 ACPI_FORMAT_UINT64 (Op->Common.Value.Integer / 8));
559 break;
560
561
562 default:
563
564 break;
565 }
566
567 AcpiOsPrintf ("\n");
568 return (AE_OK);
569 }
570
571
572 /*******************************************************************************
573 *
574 * FUNCTION: AcpiDmFindOrphanDescending
575 *
576 * PARAMETERS: ASL_WALK_CALLBACK
577 *
578 * RETURN: Status
579 *
580 * DESCRIPTION: Check namepath Ops for orphaned method invocations
581 *
582 * Note: Parts of this are experimental, under possible further development.
583 *
584 ******************************************************************************/
585
586 static ACPI_STATUS
AcpiDmFindOrphanDescending(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)587 AcpiDmFindOrphanDescending (
588 ACPI_PARSE_OBJECT *Op,
589 UINT32 Level,
590 void *Context)
591 {
592 const ACPI_OPCODE_INFO *OpInfo;
593 ACPI_PARSE_OBJECT *ChildOp;
594 ACPI_PARSE_OBJECT *NextOp;
595 ACPI_PARSE_OBJECT *ParentOp;
596 UINT32 ArgCount;
597
598
599 if (!Op)
600 {
601 return (AE_OK);
602 }
603
604 #ifdef ACPI_UNDER_DEVELOPMENT
605 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
606 #endif
607
608 switch (Op->Common.AmlOpcode)
609 {
610 #ifdef ACPI_UNDER_DEVELOPMENT
611 case AML_ADD_OP:
612
613 ChildOp = Op->Common.Value.Arg;
614 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
615 !ChildOp->Common.Node)
616 {
617 AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String,
618 NULL, &Path);
619 AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n",
620 Op->Common.AmlOpName, Path);
621 ACPI_FREE (Path);
622
623 NextOp = Op->Common.Next;
624 if (!NextOp)
625 {
626 /* This NamePath has no args, assume it is an integer */
627
628 AcpiDmAddOpToExternalList (ChildOp,
629 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0);
630 return (AE_OK);
631 }
632
633 ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp);
634 AcpiOsPrintf ("/* A-CHILDREN: %u Actual %u */\n",
635 ArgCount, AcpiDmCountChildren (Op));
636
637 if (ArgCount < 1)
638 {
639 /* One Arg means this is just a Store(Name,Target) */
640
641 AcpiDmAddOpToExternalList (ChildOp,
642 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0);
643 return (AE_OK);
644 }
645
646 AcpiDmAddOpToExternalList (ChildOp,
647 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0);
648 }
649 break;
650
651 #endif
652
653 case AML_STORE_OP:
654
655 ChildOp = Op->Common.Value.Arg;
656 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
657 !ChildOp->Common.Node)
658 {
659 NextOp = Op->Common.Next;
660 if (!NextOp)
661 {
662 /* This NamePath has no args, assume it is an integer */
663
664 AcpiDmAddOpToExternalList (ChildOp,
665 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0);
666 return (AE_OK);
667 }
668
669 ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp);
670 if (ArgCount <= 1)
671 {
672 /* One Arg means this is just a Store(Name,Target) */
673
674 AcpiDmAddOpToExternalList (ChildOp,
675 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, ArgCount, 0);
676 return (AE_OK);
677 }
678
679 AcpiDmAddOpToExternalList (ChildOp,
680 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0);
681 }
682 break;
683
684 case AML_INT_NAMEPATH_OP:
685
686 /* Must examine parent to see if this namepath is an argument */
687
688 ParentOp = Op->Common.Parent;
689 OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode);
690
691 if ((OpInfo->Class != AML_CLASS_EXECUTE) &&
692 (OpInfo->Class != AML_CLASS_CREATE) &&
693 (OpInfo->ObjectType != ACPI_TYPE_LOCAL_ALIAS) &&
694 (ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) &&
695 !Op->Common.Node)
696 {
697 ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op);
698
699 /*
700 * Check if namepath is a predicate for if/while or lone parameter to
701 * a return.
702 */
703 if (ArgCount == 0)
704 {
705 if (((ParentOp->Common.AmlOpcode == AML_IF_OP) ||
706 (ParentOp->Common.AmlOpcode == AML_WHILE_OP) ||
707 (ParentOp->Common.AmlOpcode == AML_RETURN_OP)) &&
708
709 /* And namepath is the first argument */
710 (ParentOp->Common.Value.Arg == Op))
711 {
712 AcpiDmAddOpToExternalList (Op,
713 Op->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0);
714 break;
715 }
716 }
717
718 /*
719 * This is a standalone namestring (not a parameter to another
720 * operator) - it *must* be a method invocation, nothing else is
721 * grammatically possible.
722 */
723 AcpiDmAddOpToExternalList (Op,
724 Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0);
725 }
726 break;
727
728 default:
729
730 break;
731 }
732
733 return (AE_OK);
734 }
735
736
737 /*******************************************************************************
738 *
739 * FUNCTION: AcpiDmLoadDescendingOp
740 *
741 * PARAMETERS: ASL_WALK_CALLBACK
742 *
743 * RETURN: Status
744 *
745 * DESCRIPTION: Descending handler for namespace control method object load
746 *
747 ******************************************************************************/
748
749 static ACPI_STATUS
AcpiDmLoadDescendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)750 AcpiDmLoadDescendingOp (
751 ACPI_PARSE_OBJECT *Op,
752 UINT32 Level,
753 void *Context)
754 {
755 ACPI_OP_WALK_INFO *Info = Context;
756 const ACPI_OPCODE_INFO *OpInfo;
757 ACPI_WALK_STATE *WalkState;
758 ACPI_OBJECT_TYPE ObjectType;
759 ACPI_STATUS Status;
760 char *Path = NULL;
761 ACPI_PARSE_OBJECT *NextOp;
762 ACPI_NAMESPACE_NODE *Node;
763 char FieldPath[5];
764 BOOLEAN PreDefined = FALSE;
765 UINT8 PreDefineIndex = 0;
766
767
768 WalkState = Info->WalkState;
769 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
770 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
771
772 /* Only interested in operators that create new names */
773
774 if (!(OpInfo->Flags & AML_NAMED) &&
775 !(OpInfo->Flags & AML_CREATE))
776 {
777 goto Exit;
778 }
779
780 /* Get the NamePath from the appropriate place */
781
782 if (OpInfo->Flags & AML_NAMED)
783 {
784 /* For all named operators, get the new name */
785
786 Path = Op->Named.Path;
787
788 if (!Path && Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
789 {
790 *ACPI_CAST_PTR (UINT32, &FieldPath[0]) = Op->Named.Name;
791 FieldPath[4] = 0;
792 Path = FieldPath;
793 }
794 }
795 else if (OpInfo->Flags & AML_CREATE)
796 {
797 /* New name is the last child */
798
799 NextOp = Op->Common.Value.Arg;
800
801 while (NextOp->Common.Next)
802 {
803 NextOp = NextOp->Common.Next;
804 }
805
806 Path = NextOp->Common.Value.String;
807 }
808
809 if (!Path)
810 {
811 goto Exit;
812 }
813
814 /* Insert the name into the namespace */
815
816 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
817 ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE,
818 WalkState, &Node);
819
820 Op->Common.Node = Node;
821
822 if (ACPI_SUCCESS (Status))
823 {
824 /* Check if it's a predefined node */
825
826 while (AcpiGbl_PreDefinedNames[PreDefineIndex].Name)
827 {
828 if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii,
829 AcpiGbl_PreDefinedNames[PreDefineIndex].Name))
830 {
831 PreDefined = TRUE;
832 break;
833 }
834
835 PreDefineIndex++;
836 }
837
838 /*
839 * Set node owner id if it satisfies all the following conditions:
840 * 1) Not a predefined node, _SB_ etc
841 * 2) Not the root node
842 * 3) Not a node created by Scope
843 */
844 if (!PreDefined &&
845 (Node != AcpiGbl_RootNode) &&
846 (Op->Common.AmlOpcode != AML_SCOPE_OP))
847 {
848 Node->OwnerId = WalkState->OwnerId;
849 }
850 }
851
852
853 Exit:
854
855 if (AcpiNsOpensScope (ObjectType))
856 {
857 if (Op->Common.Node)
858 {
859 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType,
860 WalkState);
861 if (ACPI_FAILURE (Status))
862 {
863 return (Status);
864 }
865 }
866 }
867
868 return (AE_OK);
869 }
870
871
872 /*******************************************************************************
873 *
874 * FUNCTION: AcpiDmXrefDescendingOp
875 *
876 * PARAMETERS: ASL_WALK_CALLBACK
877 *
878 * RETURN: Status
879 *
880 * DESCRIPTION: Descending handler for namespace cross reference
881 *
882 ******************************************************************************/
883
884 static ACPI_STATUS
AcpiDmXrefDescendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)885 AcpiDmXrefDescendingOp (
886 ACPI_PARSE_OBJECT *Op,
887 UINT32 Level,
888 void *Context)
889 {
890 ACPI_OP_WALK_INFO *Info = Context;
891 const ACPI_OPCODE_INFO *OpInfo;
892 ACPI_WALK_STATE *WalkState;
893 ACPI_OBJECT_TYPE ObjectType;
894 ACPI_OBJECT_TYPE ObjectType2;
895 ACPI_STATUS Status;
896 char *Path = NULL;
897 ACPI_PARSE_OBJECT *NextOp;
898 ACPI_NAMESPACE_NODE *Node;
899 ACPI_OPERAND_OBJECT *Object;
900 UINT32 ParamCount = 0;
901 char *Pathname;
902 UINT16 Flags = 0;
903
904
905 WalkState = Info->WalkState;
906 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
907 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
908
909 if ((!(OpInfo->Flags & AML_NAMED)) &&
910 (!(OpInfo->Flags & AML_CREATE)) &&
911 (Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP) &&
912 (Op->Common.AmlOpcode != AML_NOTIFY_OP))
913 {
914 goto Exit;
915 }
916
917 /* Get the NamePath from the appropriate place */
918
919 if (OpInfo->Flags & AML_NAMED)
920 {
921 /*
922 * Only these two operators (Alias, Scope) refer to an existing
923 * name, it is the first argument
924 */
925 if (Op->Common.AmlOpcode == AML_ALIAS_OP)
926 {
927 ObjectType = ACPI_TYPE_ANY;
928
929 NextOp = Op->Common.Value.Arg;
930 NextOp = NextOp->Common.Value.Arg;
931 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
932 {
933 Path = NextOp->Common.Value.String;
934 }
935 }
936 else if (Op->Common.AmlOpcode == AML_SCOPE_OP ||
937 Op->Common.AmlOpcode == AML_EXTERNAL_OP)
938 {
939 Path = Op->Named.Path;
940 }
941 }
942 else if (OpInfo->Flags & AML_CREATE)
943 {
944 /* Referenced Buffer Name is the first child */
945
946 ObjectType = ACPI_TYPE_BUFFER; /* Change from TYPE_BUFFER_FIELD */
947
948 NextOp = Op->Common.Value.Arg;
949 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
950 {
951 Path = NextOp->Common.Value.String;
952 }
953 }
954 else if (Op->Common.AmlOpcode == AML_NOTIFY_OP)
955 {
956 Path = Op->Common.Value.Arg->Asl.Value.String;
957 }
958 else
959 {
960 Path = Op->Common.Value.String;
961 }
962
963 if (!Path)
964 {
965 goto Exit;
966 }
967
968 /*
969 * Lookup the name in the namespace. Name must exist at this point, or it
970 * is an invalid reference.
971 *
972 * The namespace is also used as a lookup table for references to resource
973 * descriptors and the fields within them.
974 */
975 Node = NULL;
976 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
977 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
978 WalkState, &Node);
979
980 if (ACPI_SUCCESS (Status) && (Node->Flags & ANOBJ_IS_EXTERNAL))
981 {
982 /* Node was created by an External() statement */
983
984 Status = AE_NOT_FOUND;
985 }
986
987 if (ACPI_FAILURE (Status))
988 {
989 if (Status == AE_NOT_FOUND)
990 {
991 /*
992 * Add this symbol as an external declaration, except if the
993 * parent is a CondRefOf operator. For this operator, we do not
994 * need an external, nor do we want one, since this can cause
995 * disassembly problems if the symbol is actually a control
996 * method.
997 */
998 if (!(Op->Asl.Parent &&
999 (Op->Asl.Parent->Asl.AmlOpcode == AML_CONDITIONAL_REF_OF_OP)))
1000 {
1001 if (Node)
1002 {
1003 AcpiDmAddNodeToExternalList (Node,
1004 (UINT8) ObjectType, 7, Flags);
1005 }
1006 else
1007 {
1008 AcpiDmAddOpToExternalList (Op, Path,
1009 (UINT8) ObjectType, 7, Flags);
1010 }
1011 }
1012 }
1013 }
1014
1015 /*
1016 * Found the node, but check if it came from an external table.
1017 * Add it to external list. Note: Node->OwnerId == 0 indicates
1018 * one of the built-in ACPI Names (_OS_ etc.) which can safely
1019 * be ignored.
1020 */
1021 else if (Node->OwnerId &&
1022 (WalkState->OwnerId != Node->OwnerId))
1023 {
1024 ObjectType2 = ObjectType;
1025
1026 Object = AcpiNsGetAttachedObject (Node);
1027 if (Object)
1028 {
1029 ObjectType2 = Object->Common.Type;
1030 if (ObjectType2 == ACPI_TYPE_METHOD)
1031 {
1032 ParamCount = Object->Method.ParamCount;
1033 }
1034 }
1035
1036 Pathname = AcpiNsGetExternalPathname (Node);
1037 if (!Pathname)
1038 {
1039 return (AE_NO_MEMORY);
1040 }
1041
1042 AcpiDmAddNodeToExternalList (Node, (UINT8) ObjectType2,
1043 ParamCount, ACPI_EXT_RESOLVED_REFERENCE);
1044
1045 ACPI_FREE (Pathname);
1046 Op->Common.Node = Node;
1047 }
1048 else
1049 {
1050 Op->Common.Node = Node;
1051 }
1052
1053
1054 Exit:
1055 /* Open new scope if necessary */
1056
1057 if (AcpiNsOpensScope (ObjectType))
1058 {
1059 if (Op->Common.Node)
1060 {
1061 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType,
1062 WalkState);
1063 if (ACPI_FAILURE (Status))
1064 {
1065 return (Status);
1066 }
1067 }
1068 }
1069
1070 return (AE_OK);
1071 }
1072
1073 /*******************************************************************************
1074 *
1075 * FUNCTION: AcpiDmCommonDescendingOp
1076 *
1077 * PARAMETERS: ASL_WALK_CALLBACK
1078 *
1079 * RETURN: ACPI_STATUS
1080 *
1081 * DESCRIPTION: Perform parse tree preprocessing before main disassembly walk.
1082 *
1083 ******************************************************************************/
1084
1085 static ACPI_STATUS
AcpiDmCommonDescendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)1086 AcpiDmCommonDescendingOp (
1087 ACPI_PARSE_OBJECT *Op,
1088 UINT32 Level,
1089 void *Context)
1090 {
1091 ACPI_STATUS Status;
1092
1093
1094 /* Resource descriptor conversion */
1095
1096 Status = AcpiDmProcessResourceDescriptors (Op, Level, Context);
1097 if (ACPI_FAILURE (Status))
1098 {
1099 return (Status);
1100 }
1101
1102 /* Switch/Case conversion */
1103
1104 Status = AcpiDmProcessSwitch (Op);
1105 return (Status);
1106 }
1107
1108
1109 /*******************************************************************************
1110 *
1111 * FUNCTION: AcpiDmProcessResourceDescriptors
1112 *
1113 * PARAMETERS: ASL_WALK_CALLBACK
1114 *
1115 * RETURN: ACPI_STATUS
1116 *
1117 * DESCRIPTION: Convert fixed-offset references to resource descriptors to
1118 * symbolic references. Should only be called after namespace has
1119 * been cross referenced.
1120 *
1121 ******************************************************************************/
1122
1123 static ACPI_STATUS
AcpiDmProcessResourceDescriptors(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)1124 AcpiDmProcessResourceDescriptors (
1125 ACPI_PARSE_OBJECT *Op,
1126 UINT32 Level,
1127 void *Context)
1128 {
1129 ACPI_OP_WALK_INFO *Info = Context;
1130 const ACPI_OPCODE_INFO *OpInfo;
1131 ACPI_WALK_STATE *WalkState;
1132 ACPI_OBJECT_TYPE ObjectType;
1133 ACPI_STATUS Status;
1134
1135
1136 WalkState = Info->WalkState;
1137 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
1138
1139 /* Open new scope if necessary */
1140
1141 ObjectType = OpInfo->ObjectType;
1142 if (AcpiNsOpensScope (ObjectType))
1143 {
1144 if (Op->Common.Node)
1145 {
1146
1147 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType,
1148 WalkState);
1149 if (ACPI_FAILURE (Status))
1150 {
1151 return (Status);
1152 }
1153 }
1154 }
1155
1156 /*
1157 * Check if this operator contains a reference to a resource descriptor.
1158 * If so, convert the reference into a symbolic reference.
1159 */
1160 AcpiDmCheckResourceReference (Op, WalkState);
1161 return (AE_OK);
1162 }
1163
1164 /*******************************************************************************
1165 *
1166 * FUNCTION: AcpiDmCommonAscendingOp
1167 *
1168 * PARAMETERS: ASL_WALK_CALLBACK
1169 *
1170 * RETURN: None
1171 *
1172 * DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes
1173 * scope if necessary.
1174 *
1175 ******************************************************************************/
1176
1177 static ACPI_STATUS
AcpiDmCommonAscendingOp(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)1178 AcpiDmCommonAscendingOp (
1179 ACPI_PARSE_OBJECT *Op,
1180 UINT32 Level,
1181 void *Context)
1182 {
1183 ACPI_OP_WALK_INFO *Info = Context;
1184 ACPI_OBJECT_TYPE ObjectType;
1185
1186
1187 /* Close scope if necessary */
1188
1189 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
1190
1191 if (AcpiNsOpensScope (ObjectType))
1192 {
1193 (void) AcpiDsScopeStackPop (Info->WalkState);
1194 }
1195
1196 return (AE_OK);
1197 }
1198
1199 /*******************************************************************************
1200 *
1201 * FUNCTION: AcpiDmInspectPossibleArgs
1202 *
1203 * PARAMETERS: CurrentOpArgCount - Which arg of the current op was the
1204 * possible method invocation found
1205 * TargetCount - Number of targets (0,1,2) for this op
1206 * Op - Parse op
1207 *
1208 * RETURN: Status
1209 *
1210 * DESCRIPTION: Examine following args and next ops for possible arguments
1211 * for an unrecognized method invocation.
1212 *
1213 ******************************************************************************/
1214
1215 static UINT32
AcpiDmInspectPossibleArgs(UINT32 CurrentOpArgCount,UINT32 TargetCount,ACPI_PARSE_OBJECT * Op)1216 AcpiDmInspectPossibleArgs (
1217 UINT32 CurrentOpArgCount,
1218 UINT32 TargetCount,
1219 ACPI_PARSE_OBJECT *Op)
1220 {
1221 const ACPI_OPCODE_INFO *OpInfo;
1222 UINT32 i;
1223 UINT32 ArgumentCount = 0;
1224 ACPI_PARSE_OBJECT *NextOp;
1225 ACPI_PARSE_OBJECT *ExecuteOp;
1226
1227
1228 if (!Op)
1229 {
1230 return (0);
1231 }
1232
1233 /* Lookahead for the maximum number of possible arguments */
1234
1235 NextOp = Op->Common.Next;
1236
1237 for (i = 0; (i < ACPI_METHOD_NUM_ARGS) && NextOp; i++)
1238 {
1239 OpInfo = AcpiPsGetOpcodeInfo (NextOp->Common.AmlOpcode);
1240
1241 /* Any one of these operators is "very probably" not a method arg */
1242
1243 if ((NextOp->Common.AmlOpcode == AML_STORE_OP) ||
1244 (NextOp->Common.AmlOpcode == AML_NOTIFY_OP) ||
1245 (OpInfo->Class == AML_CLASS_CONTROL) ||
1246 (OpInfo->Class == AML_CLASS_CREATE) ||
1247 (OpInfo->Class == AML_CLASS_NAMED_OBJECT))
1248 {
1249 break;
1250 }
1251
1252 if (OpInfo->Class == AML_CLASS_EXECUTE)
1253 {
1254 /* Probable that this is method arg if there is no target */
1255
1256 ExecuteOp = NextOp->Common.Value.Arg;
1257 while (ExecuteOp)
1258 {
1259 if ((ExecuteOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
1260 (ExecuteOp->Common.Value.Arg == NULL))
1261 {
1262 /* No target, could be a method arg */
1263
1264 break;
1265 }
1266
1267 if (NextOp->Common.AmlOpcode == AML_REF_OF_OP)
1268 {
1269 break;
1270 }
1271
1272 ExecuteOp = ExecuteOp->Common.Next;
1273 }
1274
1275 if (!ExecuteOp)
1276 {
1277 /* Has a target, not method arg */
1278
1279 return (ArgumentCount);
1280 }
1281 }
1282
1283 ArgumentCount++;
1284 NextOp = NextOp->Common.Next;
1285 }
1286
1287 return (ArgumentCount);
1288 }
1289
