1 /******************************************************************************
2 *
3 * Module Name: asltree - Parse tree management
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2021, 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 "aslcompiler.h"
153 #include "aslcompiler.y.h"
154 #include "acapps.h"
155
156 #define _COMPONENT ACPI_COMPILER
157 ACPI_MODULE_NAME ("asltree")
158
159
160 /*******************************************************************************
161 *
162 * FUNCTION: TrSetOpIntegerValue
163 *
164 * PARAMETERS: ParseOpcode - New opcode to be assigned to the op
165 * Op - An existing parse op
166 *
167 * RETURN: The updated op
168 *
169 * DESCRIPTION: Used to set the integer value of a op,
170 * usually to a specific size (8, 16, 32, or 64 bits)
171 *
172 ******************************************************************************/
173
174 ACPI_PARSE_OBJECT *
TrSetOpIntegerValue(UINT32 ParseOpcode,ACPI_PARSE_OBJECT * Op)175 TrSetOpIntegerValue (
176 UINT32 ParseOpcode,
177 ACPI_PARSE_OBJECT *Op)
178 {
179
180 if (!Op)
181 {
182 return (NULL);
183 }
184
185 DbgPrint (ASL_PARSE_OUTPUT,
186 "\nUpdateOp: Old - %s, New - %s\n",
187 UtGetOpName (Op->Asl.ParseOpcode),
188 UtGetOpName (ParseOpcode));
189
190 /* Assign new opcode and name */
191
192 if (Op->Asl.ParseOpcode == PARSEOP_ONES)
193 {
194 switch (ParseOpcode)
195 {
196 case PARSEOP_BYTECONST:
197
198 Op->Asl.Value.Integer = ACPI_UINT8_MAX;
199 break;
200
201 case PARSEOP_WORDCONST:
202
203 Op->Asl.Value.Integer = ACPI_UINT16_MAX;
204 break;
205
206 case PARSEOP_DWORDCONST:
207
208 Op->Asl.Value.Integer = ACPI_UINT32_MAX;
209 break;
210
211 /* Don't need to do the QWORD case */
212
213 default:
214
215 /* Don't care about others */
216 break;
217 }
218 }
219
220 Op->Asl.ParseOpcode = (UINT16) ParseOpcode;
221 UtSetParseOpName (Op);
222
223 /*
224 * For the BYTE, WORD, and DWORD constants, make sure that the integer
225 * that was passed in will actually fit into the data type
226 */
227 switch (ParseOpcode)
228 {
229 case PARSEOP_BYTECONST:
230
231 UtCheckIntegerRange (Op, 0x00, ACPI_UINT8_MAX);
232 Op->Asl.Value.Integer &= ACPI_UINT8_MAX;
233 break;
234
235 case PARSEOP_WORDCONST:
236
237 UtCheckIntegerRange (Op, 0x00, ACPI_UINT16_MAX);
238 Op->Asl.Value.Integer &= ACPI_UINT16_MAX;
239 break;
240
241 case PARSEOP_DWORDCONST:
242
243 UtCheckIntegerRange (Op, 0x00, ACPI_UINT32_MAX);
244 Op->Asl.Value.Integer &= ACPI_UINT32_MAX;
245 break;
246
247 default:
248
249 /* Don't care about others, don't need to check QWORD */
250
251 break;
252 }
253
254 /* Converter: if this is a method invocation, turn off capture comments */
255
256 if (AcpiGbl_CaptureComments &&
257 (ParseOpcode == PARSEOP_METHODCALL))
258 {
259 AslGbl_CommentState.CaptureComments = FALSE;
260 }
261
262 return (Op);
263 }
264
265
266 /*******************************************************************************
267 *
268 * FUNCTION: TrSetOpFlags
269 *
270 * PARAMETERS: Op - An existing parse op
271 * Flags - New flags word
272 *
273 * RETURN: The updated parser op
274 *
275 * DESCRIPTION: Set bits in the op flags word. Will not clear bits, only set
276 *
277 ******************************************************************************/
278
279 ACPI_PARSE_OBJECT *
TrSetOpFlags(ACPI_PARSE_OBJECT * Op,UINT32 Flags)280 TrSetOpFlags (
281 ACPI_PARSE_OBJECT *Op,
282 UINT32 Flags)
283 {
284
285 if (!Op)
286 {
287 return (NULL);
288 }
289
290 DbgPrint (ASL_PARSE_OUTPUT,
291 "\nSetOpFlags: %s Op %p, %8.8X", Op->Asl.ParseOpName, Op, Flags);
292
293 TrPrintOpFlags (Flags, ASL_PARSE_OUTPUT);
294 DbgPrint (ASL_PARSE_OUTPUT, "\n\n");
295
296 Op->Asl.CompileFlags |= Flags;
297 return (Op);
298 }
299
300
301 /*******************************************************************************
302 *
303 * FUNCTION: TrSetOpAmlLength
304 *
305 * PARAMETERS: Op - An existing parse op
306 * Length - AML Length
307 *
308 * RETURN: The updated parser op
309 *
310 * DESCRIPTION: Set the AML Length in a op. Used by the parser to indicate
311 * the presence of a op that must be reduced to a fixed length
312 * constant.
313 *
314 ******************************************************************************/
315
316 ACPI_PARSE_OBJECT *
TrSetOpAmlLength(ACPI_PARSE_OBJECT * Op,UINT32 Length)317 TrSetOpAmlLength (
318 ACPI_PARSE_OBJECT *Op,
319 UINT32 Length)
320 {
321
322 DbgPrint (ASL_PARSE_OUTPUT,
323 "\nSetOpAmlLength: Op %p, %8.8X\n", Op, Length);
324
325 if (!Op)
326 {
327 return (NULL);
328 }
329
330 Op->Asl.AmlLength = Length;
331 return (Op);
332 }
333
334
335 /*******************************************************************************
336 *
337 * FUNCTION: TrSetOpParent
338 *
339 * PARAMETERS: Op - To be set to new parent
340 * ParentOp - The parent
341 *
342 * RETURN: None, sets Op parent directly
343 *
344 * DESCRIPTION: Change the parent of a parse op.
345 *
346 ******************************************************************************/
347
348 void
TrSetOpParent(ACPI_PARSE_OBJECT * Op,ACPI_PARSE_OBJECT * ParentOp)349 TrSetOpParent (
350 ACPI_PARSE_OBJECT *Op,
351 ACPI_PARSE_OBJECT *ParentOp)
352 {
353
354 Op->Asl.Parent = ParentOp;
355 }
356
357
358 /*******************************************************************************
359 *
360 * FUNCTION: TrSetOpCurrentFilename
361 *
362 * PARAMETERS: Op - An existing parse op
363 *
364 * RETURN: None
365 *
366 * DESCRIPTION: Save the include file filename. Used for debug output only.
367 *
368 ******************************************************************************/
369
370 void
TrSetOpCurrentFilename(ACPI_PARSE_OBJECT * Op)371 TrSetOpCurrentFilename (
372 ACPI_PARSE_OBJECT *Op)
373 {
374
375 Op->Asl.Filename = AslGbl_PreviousIncludeFilename;
376 }
377
378
379 /*******************************************************************************
380 *
381 * FUNCTION: TrSetOpIntegerWidth
382 *
383 * PARAMETERS: Op - An existing parse op
384 *
385 * RETURN: None
386 *
387 * DESCRIPTION:
388 *
389 ******************************************************************************/
390
391 void
TrSetOpIntegerWidth(ACPI_PARSE_OBJECT * TableSignatureOp,ACPI_PARSE_OBJECT * RevisionOp)392 TrSetOpIntegerWidth (
393 ACPI_PARSE_OBJECT *TableSignatureOp,
394 ACPI_PARSE_OBJECT *RevisionOp)
395 {
396
397 /* TBD: Check table sig? (DSDT vs. SSDT) */
398
399 /* Handle command-line version override */
400
401 if (AslGbl_RevisionOverride)
402 {
403 AcpiUtSetIntegerWidth (AslGbl_RevisionOverride);
404 }
405 else
406 {
407 AcpiUtSetIntegerWidth ((UINT8) RevisionOp->Asl.Value.Integer);
408 }
409 }
410
411
412 /*******************************************************************************
413 *
414 * FUNCTION: TrSetOpEndLineNumber
415 *
416 * PARAMETERS: Op - An existing parse op
417 *
418 * RETURN: None.
419 *
420 * DESCRIPTION: Set the ending line numbers (file line and logical line) of a
421 * parse op to the current line numbers.
422 *
423 ******************************************************************************/
424
425 void
TrSetOpEndLineNumber(ACPI_PARSE_OBJECT * Op)426 TrSetOpEndLineNumber (
427 ACPI_PARSE_OBJECT *Op)
428 {
429
430 /* If the end line # is already set, just return */
431
432 if (Op->Asl.EndLine)
433 {
434 return;
435 }
436
437 Op->Asl.EndLine = AslGbl_CurrentLineNumber;
438 Op->Asl.EndLogicalLine = AslGbl_LogicalLineNumber;
439 }
440
441
442 /*******************************************************************************
443 *
444 * FUNCTION: TrLinkOpChildren
445 *
446 * PARAMETERS: Op - An existing parse op
447 * NumChildren - Number of children to follow
448 * ... - A list of child ops to link to the new
449 * op. NumChildren long.
450 *
451 * RETURN: The updated (linked) op
452 *
453 * DESCRIPTION: Link a group of ops to an existing parse op
454 *
455 ******************************************************************************/
456
457 ACPI_PARSE_OBJECT *
TrLinkOpChildren(ACPI_PARSE_OBJECT * Op,UINT32 NumChildren,...)458 TrLinkOpChildren (
459 ACPI_PARSE_OBJECT *Op,
460 UINT32 NumChildren,
461 ...)
462 {
463 ACPI_PARSE_OBJECT *Child;
464 ACPI_PARSE_OBJECT *PrevChild;
465 ACPI_PARSE_OBJECT *LastSibling;
466 va_list ap;
467 UINT32 i;
468 BOOLEAN FirstChild;
469
470
471 va_start (ap, NumChildren);
472
473 TrSetOpEndLineNumber (Op);
474
475 DbgPrint (ASL_PARSE_OUTPUT,
476 "\nLinkChildren Line [%u to %u] NewParent %p Child %u Op %s ",
477 Op->Asl.LineNumber, Op->Asl.EndLine,
478 Op, NumChildren, UtGetOpName(Op->Asl.ParseOpcode));
479
480 switch (Op->Asl.ParseOpcode)
481 {
482 case PARSEOP_ASL_CODE:
483
484 if (!AslGbl_ParseTreeRoot)
485 {
486 DbgPrint (ASL_PARSE_OUTPUT, "Creating first Definition Block\n");
487 AslGbl_ParseTreeRoot = Op;
488 Op->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
489 }
490 else
491 {
492 DbgPrint (ASL_PARSE_OUTPUT, "Creating subsequent Definition Block\n");
493 Op = AslGbl_ParseTreeRoot;
494 }
495
496 DbgPrint (ASL_PARSE_OUTPUT, "ASLCODE (Tree Completed)->");
497 break;
498
499 case PARSEOP_DEFINITION_BLOCK:
500
501 DbgPrint (ASL_PARSE_OUTPUT, "DEFINITION_BLOCK (Tree Completed)->");
502 break;
503
504 case PARSEOP_OPERATIONREGION:
505
506 DbgPrint (ASL_PARSE_OUTPUT, "OPREGION->");
507 break;
508
509 case PARSEOP_OR:
510
511 DbgPrint (ASL_PARSE_OUTPUT, "OR->");
512 break;
513
514 default:
515
516 /* Nothing to do for other opcodes */
517
518 break;
519 }
520
521 /* The following is for capturing comments */
522
523 if (AcpiGbl_CaptureComments)
524 {
525 /*
526 * If there are "regular comments" detected at this point,
527 * then is an endBlk comment. Categorize it as so and distribute
528 * all regular comments to this parse op.
529 */
530 if (AslGbl_CommentListHead)
531 {
532 Op->Asl.EndBlkComment = AslGbl_CommentListHead;
533 CvDbgPrint ("EndBlk Comment for %s: %s",
534 Op->Asl.ParseOpName, AslGbl_CommentListHead->Comment);
535 AslGbl_CommentListHead = NULL;
536 AslGbl_CommentListTail = NULL;
537 }
538 }
539
540 /* Link the new op to it's children */
541
542 PrevChild = NULL;
543 FirstChild = TRUE;
544 for (i = 0; i < NumChildren; i++)
545 {
546 Child = va_arg (ap, ACPI_PARSE_OBJECT *);
547
548 if ((Child == PrevChild) && (Child != NULL))
549 {
550 AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Child,
551 "Child op list invalid");
552 va_end(ap);
553 return (Op);
554 }
555
556 DbgPrint (ASL_PARSE_OUTPUT, "%p, ", Child);
557
558 /*
559 * If child is NULL, this means that an optional argument
560 * was omitted. We must create a placeholder with a special
561 * opcode (DEFAULT_ARG) so that the code generator will know
562 * that it must emit the correct default for this argument
563 */
564 if (!Child)
565 {
566 Child = TrAllocateOp (PARSEOP_DEFAULT_ARG);
567 }
568
569 /* Link first child to parent */
570
571 if (FirstChild)
572 {
573 FirstChild = FALSE;
574
575 /*
576 * In the case that multiple definition blocks are being compiled,
577 * append the definition block to the end of the child list as the
578 * last sibling. This is done to facilitate namespace cross-
579 * reference between multiple definition blocks.
580 */
581 if (Op->Asl.Child &&
582 (Op->Asl.Child->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK))
583 {
584 LastSibling = Op->Asl.Child;
585 while (LastSibling->Asl.Next)
586 {
587 LastSibling = LastSibling->Asl.Next;
588 }
589 LastSibling->Asl.Next = Child;
590 }
591 else
592 {
593 Op->Asl.Child = Child;
594 }
595 }
596
597 /* Point all children to parent */
598
599 Child->Asl.Parent = Op;
600
601 /* Link children in a peer list */
602
603 if (PrevChild)
604 {
605 PrevChild->Asl.Next = Child;
606 }
607
608 /*
609 * This child might be a list, point all ops in the list
610 * to the same parent
611 */
612 while (Child->Asl.Next)
613 {
614 Child = Child->Asl.Next;
615 Child->Asl.Parent = Op;
616 }
617
618 PrevChild = Child;
619 }
620
621 va_end(ap);
622 DbgPrint (ASL_PARSE_OUTPUT, "\n\n");
623
624 if (AcpiGbl_CaptureComments)
625 {
626 AslGbl_CommentState.LatestParseOp = Op;
627 CvDbgPrint ("TrLinkOpChildren=====Set latest parse op to this op.\n");
628 }
629
630 return (Op);
631 }
632
633
634 /*******************************************************************************
635 *
636 * FUNCTION: TrLinkPeerOp
637 *
638 * PARAMETERS: Op1 - First peer
639 * Op2 - Second peer
640 *
641 * RETURN: Op1 or the non-null op.
642 *
643 * DESCRIPTION: Link two ops as peers. Handles cases where one peer is null.
644 *
645 ******************************************************************************/
646
647 ACPI_PARSE_OBJECT *
TrLinkPeerOp(ACPI_PARSE_OBJECT * Op1,ACPI_PARSE_OBJECT * Op2)648 TrLinkPeerOp (
649 ACPI_PARSE_OBJECT *Op1,
650 ACPI_PARSE_OBJECT *Op2)
651 {
652 ACPI_PARSE_OBJECT *Next;
653
654
655 DbgPrint (ASL_PARSE_OUTPUT,
656 "\nLinkPeerOp: 1=%p (%s), 2=%p (%s)\n",
657 Op1, Op1 ? UtGetOpName(Op1->Asl.ParseOpcode) : NULL,
658 Op2, Op2 ? UtGetOpName(Op2->Asl.ParseOpcode) : NULL);
659
660
661 if ((!Op1) && (!Op2))
662 {
663 DbgPrint (ASL_PARSE_OUTPUT, "\nTwo Null ops!\n");
664 return (Op1);
665 }
666
667 /* If one of the ops is null, just return the non-null op */
668
669 if (!Op2)
670 {
671 return (Op1);
672 }
673
674 if (!Op1)
675 {
676 return (Op2);
677 }
678
679 if (Op1 == Op2)
680 {
681 DbgPrint (ASL_DEBUG_OUTPUT,
682 "\n************* Internal error, linking op to itself %p\n",
683 Op1);
684 AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op1,
685 "Linking op to itself");
686 return (Op1);
687 }
688
689 Op1->Asl.Parent = Op2->Asl.Parent;
690
691 /*
692 * Op 1 may already have a peer list (such as an IF/ELSE pair),
693 * so we must walk to the end of the list and attach the new
694 * peer at the end
695 */
696 Next = Op1;
697 while (Next->Asl.Next)
698 {
699 Next = Next->Asl.Next;
700 }
701
702 Next->Asl.Next = Op2;
703 return (Op1);
704 }
705
706
707 /*******************************************************************************
708 *
709 * FUNCTION: TrLinkPeerOps
710 *
711 * PARAMETERS: NumPeers - The number of ops in the list to follow
712 * ... - A list of ops to link together as peers
713 *
714 * RETURN: The first op in the list (head of the peer list)
715 *
716 * DESCRIPTION: Link together an arbitrary number of peer ops.
717 *
718 ******************************************************************************/
719
720 ACPI_PARSE_OBJECT *
TrLinkPeerOps(UINT32 NumPeers,...)721 TrLinkPeerOps (
722 UINT32 NumPeers,
723 ...)
724 {
725 ACPI_PARSE_OBJECT *This;
726 ACPI_PARSE_OBJECT *Next;
727 va_list ap;
728 UINT32 i;
729 ACPI_PARSE_OBJECT *Start;
730
731
732 DbgPrint (ASL_PARSE_OUTPUT,
733 "\nLinkPeerOps: (%u) ", NumPeers);
734
735 va_start (ap, NumPeers);
736 This = va_arg (ap, ACPI_PARSE_OBJECT *);
737 Start = This;
738
739 /*
740 * Link all peers
741 */
742 for (i = 0; i < (NumPeers -1); i++)
743 {
744 DbgPrint (ASL_PARSE_OUTPUT, "%u=%p ", (i+1), This);
745
746 while (This->Asl.Next)
747 {
748 This = This->Asl.Next;
749 }
750
751 /* Get another peer op */
752
753 Next = va_arg (ap, ACPI_PARSE_OBJECT *);
754 if (!Next)
755 {
756 Next = TrAllocateOp (PARSEOP_DEFAULT_ARG);
757 }
758
759 /* link new op to the current op */
760
761 This->Asl.Next = Next;
762 This = Next;
763 }
764
765 va_end (ap);
766 DbgPrint (ASL_PARSE_OUTPUT,"\n");
767 return (Start);
768 }
769
770
771 /*******************************************************************************
772 *
773 * FUNCTION: TrLinkChildOp
774 *
775 * PARAMETERS: Op1 - Parent op
776 * Op2 - Op to become a child
777 *
778 * RETURN: The parent op
779 *
780 * DESCRIPTION: Link two ops together as a parent and child
781 *
782 ******************************************************************************/
783
784 ACPI_PARSE_OBJECT *
TrLinkChildOp(ACPI_PARSE_OBJECT * Op1,ACPI_PARSE_OBJECT * Op2)785 TrLinkChildOp (
786 ACPI_PARSE_OBJECT *Op1,
787 ACPI_PARSE_OBJECT *Op2)
788 {
789 ACPI_PARSE_OBJECT *Next;
790
791
792 DbgPrint (ASL_PARSE_OUTPUT,
793 "\nLinkChildOp: Parent=%p (%s), Child=%p (%s)\n",
794 Op1, Op1 ? UtGetOpName(Op1->Asl.ParseOpcode): NULL,
795 Op2, Op2 ? UtGetOpName(Op2->Asl.ParseOpcode): NULL);
796
797 /*
798 * Converter: if TrLinkChildOp is called to link a method call,
799 * turn on capture comments as it signifies that we are done parsing
800 * a method call.
801 */
802 if (AcpiGbl_CaptureComments && Op1)
803 {
804 if (Op1->Asl.ParseOpcode == PARSEOP_METHODCALL)
805 {
806 AslGbl_CommentState.CaptureComments = TRUE;
807 }
808 AslGbl_CommentState.LatestParseOp = Op1;
809 }
810
811 if (!Op1 || !Op2)
812 {
813 return (Op1);
814 }
815
816 Op1->Asl.Child = Op2;
817
818 /* Set the child and all peers of the child to point to the parent */
819
820 Next = Op2;
821 while (Next)
822 {
823 Next->Asl.Parent = Op1;
824 Next = Next->Asl.Next;
825 }
826
827 return (Op1);
828 }
829
830
831 /*******************************************************************************
832 *
833 * FUNCTION: TrWalkParseTree
834 *
835 * PARAMETERS: Op - Walk starting point
836 * Visitation - Type of walk
837 * DescendingCallback - Called during tree descent
838 * AscendingCallback - Called during tree ascent
839 * Context - To be passed to the callbacks
840 *
841 * RETURN: Status from callback(s)
842 *
843 * DESCRIPTION: Walk the entire parse tree.
844 *
845 ******************************************************************************/
846
847 ACPI_STATUS
TrWalkParseTree(ACPI_PARSE_OBJECT * Op,UINT32 Visitation,ASL_WALK_CALLBACK DescendingCallback,ASL_WALK_CALLBACK AscendingCallback,void * Context)848 TrWalkParseTree (
849 ACPI_PARSE_OBJECT *Op,
850 UINT32 Visitation,
851 ASL_WALK_CALLBACK DescendingCallback,
852 ASL_WALK_CALLBACK AscendingCallback,
853 void *Context)
854 {
855 UINT32 Level;
856 BOOLEAN OpPreviouslyVisited;
857 ACPI_PARSE_OBJECT *StartOp = Op;
858 ACPI_STATUS Status;
859 ACPI_PARSE_OBJECT *Restore = NULL;
860 BOOLEAN WalkOneDefinitionBlock = Visitation & ASL_WALK_VISIT_DB_SEPARATELY;
861
862
863 if (!AslGbl_ParseTreeRoot)
864 {
865 return (AE_OK);
866 }
867
868 Level = 0;
869 OpPreviouslyVisited = FALSE;
870
871 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK &&
872 WalkOneDefinitionBlock)
873 {
874 Restore = Op->Asl.Next;
875 Op->Asl.Next = NULL;
876 }
877 switch (Visitation & ~ASL_WALK_VISIT_DB_SEPARATELY)
878 {
879 case ASL_WALK_VISIT_DOWNWARD:
880
881 while (Op)
882 {
883 if (!OpPreviouslyVisited)
884 {
885 /* Let the callback process the op. */
886
887 Status = DescendingCallback (Op, Level, Context);
888 if (ACPI_SUCCESS (Status))
889 {
890 /* Visit children first, once */
891
892 if (Op->Asl.Child)
893 {
894 Level++;
895 Op = Op->Asl.Child;
896 continue;
897 }
898 }
899 else if (Status != AE_CTRL_DEPTH)
900 {
901 /* Exit immediately on any error */
902
903 goto ErrorExit;
904 }
905 }
906
907 /* Terminate walk at start op */
908
909 if (Op == StartOp)
910 {
911 break;
912 }
913
914 /* No more children, visit peers */
915
916 if (Op->Asl.Next)
917 {
918 Op = Op->Asl.Next;
919 OpPreviouslyVisited = FALSE;
920 }
921 else
922 {
923 /* No children or peers, re-visit parent */
924
925 if (Level != 0 )
926 {
927 Level--;
928 }
929 Op = Op->Asl.Parent;
930 OpPreviouslyVisited = TRUE;
931 }
932 }
933 break;
934
935 case ASL_WALK_VISIT_UPWARD:
936
937 while (Op)
938 {
939 /* Visit leaf op (no children) or parent op on return trip */
940
941 if ((!Op->Asl.Child) ||
942 (OpPreviouslyVisited))
943 {
944 /* Let the callback process the op. */
945
946 Status = AscendingCallback (Op, Level, Context);
947 if (ACPI_FAILURE (Status))
948 {
949 goto ErrorExit;
950 }
951 }
952 else
953 {
954 /* Visit children first, once */
955
956 Level++;
957 Op = Op->Asl.Child;
958 continue;
959 }
960
961 /* Terminate walk at start op */
962
963 if (Op == StartOp)
964 {
965 break;
966 }
967
968 /* No more children, visit peers */
969
970 if (Op->Asl.Next)
971 {
972 Op = Op->Asl.Next;
973 OpPreviouslyVisited = FALSE;
974 }
975 else
976 {
977 /* No children or peers, re-visit parent */
978
979 if (Level != 0 )
980 {
981 Level--;
982 }
983 Op = Op->Asl.Parent;
984 OpPreviouslyVisited = TRUE;
985 }
986 }
987 break;
988
989 case ASL_WALK_VISIT_TWICE:
990
991 while (Op)
992 {
993 if (OpPreviouslyVisited)
994 {
995 Status = AscendingCallback (Op, Level, Context);
996 if (ACPI_FAILURE (Status))
997 {
998 goto ErrorExit;
999 }
1000 }
1001 else
1002 {
1003 /* Let the callback process the op. */
1004
1005 Status = DescendingCallback (Op, Level, Context);
1006 if (ACPI_SUCCESS (Status))
1007 {
1008 /* Visit children first, once */
1009
1010 if (Op->Asl.Child)
1011 {
1012 Level++;
1013 Op = Op->Asl.Child;
1014 continue;
1015 }
1016 }
1017 else if (Status != AE_CTRL_DEPTH)
1018 {
1019 /* Exit immediately on any error */
1020
1021 goto ErrorExit;
1022 }
1023 }
1024
1025 /* Terminate walk at start op */
1026
1027 if (Op == StartOp)
1028 {
1029 break;
1030 }
1031
1032 /* No more children, visit peers */
1033
1034 if (Op->Asl.Next)
1035 {
1036 Op = Op->Asl.Next;
1037 OpPreviouslyVisited = FALSE;
1038 }
1039 else
1040 {
1041 /* No children or peers, re-visit parent */
1042
1043 if (Level != 0 )
1044 {
1045 Level--;
1046 }
1047 Op = Op->Asl.Parent;
1048 OpPreviouslyVisited = TRUE;
1049 }
1050 }
1051 break;
1052
1053 default:
1054 /* No other types supported */
1055 break;
1056 }
1057
1058 /* If we get here, the walk completed with no errors */
1059
1060 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK &&
1061 WalkOneDefinitionBlock)
1062 {
1063 Op->Asl.Next = Restore;
1064 }
1065
1066 return (AE_OK);
1067
1068 ErrorExit:
1069
1070 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK &&
1071 WalkOneDefinitionBlock)
1072 {
1073 Op->Asl.Next = Restore;
1074 }
1075 return (Status);
1076 }
1077