1 /******************************************************************************
2 *
3 * Module Name: psargs - Parse AML opcode arguments
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, 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.
165 *
166 * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
167 * prefix characters. Set parser state to point past the string.
168 * (Name is consumed from the AML.)
169 *
170 ******************************************************************************/
171
172 char *
173 AcpiPsGetNextNamestring (
174 ACPI_PARSE_STATE *ParserState)
175 {
176 UINT8 *Start = ParserState->Aml;
177 UINT8 *End = ParserState->Aml;
178
179
180 ACPI_FUNCTION_TRACE (PsGetNextNamestring);
181
182
183 /* Point past any namestring prefix characters (backslash or carat) */
184
185 while (AcpiPsIsPrefixChar (*End))
186 {
187 End++;
188 }
189
190 /* Decode the path prefix character */
191
192 switch (*End)
193 {
194 case 0:
195
196 /* NullName */
197
198 if (End == Start)
199 {
200 Start = NULL;
201 }
202 End++;
203 break;
204
205 case AML_DUAL_NAME_PREFIX:
429 {
430 UINT32 Length;
431 UINT16 Opcode;
432 UINT8 *Aml = ParserState->Aml;
433
434
435 ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg, ArgType);
436
437
438 switch (ArgType)
439 {
440 case ARGP_BYTEDATA:
441
442 /* Get 1 byte from the AML stream */
443
444 Opcode = AML_BYTE_OP;
445 Arg->Common.Value.Integer = (UINT64) *Aml;
446 Length = 1;
447 break;
448
449
450 case ARGP_WORDDATA:
451
452 /* Get 2 bytes from the AML stream */
453
454 Opcode = AML_WORD_OP;
455 ACPI_MOVE_16_TO_64 (&Arg->Common.Value.Integer, Aml);
456 Length = 2;
457 break;
458
459
460 case ARGP_DWORDDATA:
461
462 /* Get 4 bytes from the AML stream */
463
464 Opcode = AML_DWORD_OP;
465 ACPI_MOVE_32_TO_64 (&Arg->Common.Value.Integer, Aml);
466 Length = 4;
467 break;
468
469
470 case ARGP_QWORDDATA:
471
472 /* Get 8 bytes from the AML stream */
473
474 Opcode = AML_QWORD_OP;
475 ACPI_MOVE_64_TO_64 (&Arg->Common.Value.Integer, Aml);
476 Length = 8;
477 break;
478
479
480 case ARGP_CHARLIST:
481
482 /* Get a pointer to the string, point past the string */
483
484 Opcode = AML_STRING_OP;
485 Arg->Common.Value.String = ACPI_CAST_PTR (char, Aml);
486
487 /* Find the null terminator */
488
489 Length = 0;
490 while (Aml[Length])
491 {
492 Length++;
493 }
494 Length++;
495 break;
496
497
498 case ARGP_NAME:
499 case ARGP_NAMESTRING:
500
501 AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
502 Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState);
503 return_VOID;
504
505
506 default:
507
508 ACPI_ERROR ((AE_INFO, "Invalid ArgType 0x%X", ArgType));
509 return_VOID;
510 }
511
512 AcpiPsInitOp (Arg, Opcode);
513 ParserState->Aml += Length;
514 return_VOID;
515 }
516
517
518 /*******************************************************************************
519 *
520 * FUNCTION: AcpiPsGetNextField
521 *
522 * PARAMETERS: ParserState - Current parser state object
523 *
524 * RETURN: A newly allocated FIELD op
525 *
526 * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField)
527 *
528 ******************************************************************************/
529
530 static ACPI_PARSE_OBJECT *
531 AcpiPsGetNextField (
532 ACPI_PARSE_STATE *ParserState)
533 {
534 UINT32 AmlOffset = (UINT32)
535 ACPI_PTR_DIFF (ParserState->Aml,
536 ParserState->AmlStart);
537 ACPI_PARSE_OBJECT *Field;
538 UINT16 Opcode;
539 UINT32 Name;
540
541
542 ACPI_FUNCTION_TRACE (PsGetNextField);
543
544
545 /* Determine field type */
546
547 switch (ACPI_GET8 (ParserState->Aml))
548 {
549 default:
550
551 Opcode = AML_INT_NAMEDFIELD_OP;
552 break;
553
554 case 0x00:
555
556 Opcode = AML_INT_RESERVEDFIELD_OP;
557 ParserState->Aml++;
558 break;
559
560 case 0x01:
561
562 Opcode = AML_INT_ACCESSFIELD_OP;
563 ParserState->Aml++;
564 break;
565 }
566
567 /* Allocate a new field op */
568
569 Field = AcpiPsAllocOp (Opcode);
570 if (!Field)
571 {
572 return_PTR (NULL);
573 }
574
575 Field->Common.AmlOffset = AmlOffset;
576
577 /* Decode the field type */
578
579 switch (Opcode)
580 {
581 case AML_INT_NAMEDFIELD_OP:
582
583 /* Get the 4-character name */
584
585 ACPI_MOVE_32_TO_32 (&Name, ParserState->Aml);
586 AcpiPsSetName (Field, Name);
587 ParserState->Aml += ACPI_NAME_SIZE;
588
589 /* Get the length which is encoded as a package length */
590
591 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState);
592 break;
593
594
595 case AML_INT_RESERVEDFIELD_OP:
596
597 /* Get the length which is encoded as a package length */
598
599 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState);
600 break;
601
602
603 case AML_INT_ACCESSFIELD_OP:
604
605 /*
606 * Get AccessType and AccessAttrib and merge into the field Op
607 * AccessType is first operand, AccessAttribute is second
608 */
609 Field->Common.Value.Integer = (((UINT32) ACPI_GET8 (ParserState->Aml) << 8));
610 ParserState->Aml++;
611 Field->Common.Value.Integer |= ACPI_GET8 (ParserState->Aml);
612 ParserState->Aml++;
613 break;
614
615 default:
616
617 /* Opcode was set in previous switch */
618 break;
619 }
620
621 return_PTR (Field);
622 }
623
624
625 /*******************************************************************************
626 *
627 * FUNCTION: AcpiPsGetNextArg
628 *
629 * PARAMETERS: WalkState - Current state
630 * ParserState - Current parser state object
631 * ArgType - The argument type (AML_*_ARG)
632 * ReturnArg - Where the next arg is returned
633 *
634 * RETURN: Status, and an op object containing the next argument.
635 *
636 * DESCRIPTION: Get next argument (including complex list arguments that require
657
658 switch (ArgType)
659 {
660 case ARGP_BYTEDATA:
661 case ARGP_WORDDATA:
662 case ARGP_DWORDDATA:
663 case ARGP_CHARLIST:
664 case ARGP_NAME:
665 case ARGP_NAMESTRING:
666
667 /* Constants, strings, and namestrings are all the same size */
668
669 Arg = AcpiPsAllocOp (AML_BYTE_OP);
670 if (!Arg)
671 {
672 return_ACPI_STATUS (AE_NO_MEMORY);
673 }
674 AcpiPsGetNextSimpleArg (ParserState, ArgType, Arg);
675 break;
676
677
678 case ARGP_PKGLENGTH:
679
680 /* Package length, nothing returned */
681
682 ParserState->PkgEnd = AcpiPsGetNextPackageEnd (ParserState);
683 break;
684
685
686 case ARGP_FIELDLIST:
687
688 if (ParserState->Aml < ParserState->PkgEnd)
689 {
690 /* Non-empty list */
691
692 while (ParserState->Aml < ParserState->PkgEnd)
693 {
694 Field = AcpiPsGetNextField (ParserState);
695 if (!Field)
696 {
697 return_ACPI_STATUS (AE_NO_MEMORY);
698 }
699
700 if (Prev)
701 {
702 Prev->Common.Next = Field;
703 }
704 else
705 {
706 Arg = Field;
707 }
708 Prev = Field;
709 }
710
711 /* Skip to End of byte data */
712
713 ParserState->Aml = ParserState->PkgEnd;
714 }
715 break;
716
717
718 case ARGP_BYTELIST:
719
720 if (ParserState->Aml < ParserState->PkgEnd)
721 {
722 /* Non-empty list */
723
724 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP);
725 if (!Arg)
726 {
727 return_ACPI_STATUS (AE_NO_MEMORY);
728 }
729
730 /* Fill in bytelist data */
731
732 Arg->Common.Value.Size = (UINT32)
733 ACPI_PTR_DIFF (ParserState->PkgEnd, ParserState->Aml);
734 Arg->Named.Data = ParserState->Aml;
735
736 /* Skip to End of byte data */
737
738 ParserState->Aml = ParserState->PkgEnd;
739 }
740 break;
741
742
743 case ARGP_TARGET:
744 case ARGP_SUPERNAME:
745 case ARGP_SIMPLENAME:
746
747 Subop = AcpiPsPeekOpcode (ParserState);
748 if (Subop == 0 ||
749 AcpiPsIsLeadingChar (Subop) ||
750 AcpiPsIsPrefixChar (Subop))
751 {
752 /* NullName or NameString */
753
754 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
755 if (!Arg)
756 {
757 return_ACPI_STATUS (AE_NO_MEMORY);
758 }
759
760 /* To support SuperName arg of Unload */
761
762 if (WalkState->Opcode == AML_UNLOAD_OP)
763 {
764 Status = AcpiPsGetNextNamepath (WalkState, ParserState, Arg, 1);
765
766 /*
767 * If the SuperName arg of Unload is a method call,
768 * we have restored the AML pointer, just free this Arg
769 */
770 if (Arg->Common.AmlOpcode == AML_INT_METHODCALL_OP)
771 {
772 AcpiPsFreeOp (Arg);
773 Arg = NULL;
774 }
775 }
776 else
777 {
778 Status = AcpiPsGetNextNamepath (WalkState, ParserState, Arg, 0);
779 }
780 }
781 else
782 {
783 /* Single complex argument, nothing returned */
784
785 WalkState->ArgCount = 1;
786 }
787 break;
788
789
790 case ARGP_DATAOBJ:
791 case ARGP_TERMARG:
792
793 /* Single complex argument, nothing returned */
794
795 WalkState->ArgCount = 1;
796 break;
797
798
799 case ARGP_DATAOBJLIST:
800 case ARGP_TERMLIST:
801 case ARGP_OBJLIST:
802
803 if (ParserState->Aml < ParserState->PkgEnd)
804 {
805 /* Non-empty list of variable arguments, nothing returned */
806
807 WalkState->ArgCount = ACPI_VAR_ARGS;
808 }
809 break;
810
811
812 default:
813
814 ACPI_ERROR ((AE_INFO, "Invalid ArgType: 0x%X", ArgType));
815 Status = AE_AML_OPERAND_TYPE;
816 break;
817 }
818
819 *ReturnArg = Arg;
820 return_ACPI_STATUS (Status);
821 }
|
1 /******************************************************************************
2 *
3 * Module Name: psargs - Parse AML opcode arguments
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, 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.
165 *
166 * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
167 * prefix characters. Set parser state to point past the string.
168 * (Name is consumed from the AML.)
169 *
170 ******************************************************************************/
171
172 char *
173 AcpiPsGetNextNamestring (
174 ACPI_PARSE_STATE *ParserState)
175 {
176 UINT8 *Start = ParserState->Aml;
177 UINT8 *End = ParserState->Aml;
178
179
180 ACPI_FUNCTION_TRACE (PsGetNextNamestring);
181
182
183 /* Point past any namestring prefix characters (backslash or carat) */
184
185 while (ACPI_IS_ROOT_PREFIX (*End) ||
186 ACPI_IS_PARENT_PREFIX (*End))
187 {
188 End++;
189 }
190
191 /* Decode the path prefix character */
192
193 switch (*End)
194 {
195 case 0:
196
197 /* NullName */
198
199 if (End == Start)
200 {
201 Start = NULL;
202 }
203 End++;
204 break;
205
206 case AML_DUAL_NAME_PREFIX:
430 {
431 UINT32 Length;
432 UINT16 Opcode;
433 UINT8 *Aml = ParserState->Aml;
434
435
436 ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg, ArgType);
437
438
439 switch (ArgType)
440 {
441 case ARGP_BYTEDATA:
442
443 /* Get 1 byte from the AML stream */
444
445 Opcode = AML_BYTE_OP;
446 Arg->Common.Value.Integer = (UINT64) *Aml;
447 Length = 1;
448 break;
449
450 case ARGP_WORDDATA:
451
452 /* Get 2 bytes from the AML stream */
453
454 Opcode = AML_WORD_OP;
455 ACPI_MOVE_16_TO_64 (&Arg->Common.Value.Integer, Aml);
456 Length = 2;
457 break;
458
459 case ARGP_DWORDDATA:
460
461 /* Get 4 bytes from the AML stream */
462
463 Opcode = AML_DWORD_OP;
464 ACPI_MOVE_32_TO_64 (&Arg->Common.Value.Integer, Aml);
465 Length = 4;
466 break;
467
468 case ARGP_QWORDDATA:
469
470 /* Get 8 bytes from the AML stream */
471
472 Opcode = AML_QWORD_OP;
473 ACPI_MOVE_64_TO_64 (&Arg->Common.Value.Integer, Aml);
474 Length = 8;
475 break;
476
477 case ARGP_CHARLIST:
478
479 /* Get a pointer to the string, point past the string */
480
481 Opcode = AML_STRING_OP;
482 Arg->Common.Value.String = ACPI_CAST_PTR (char, Aml);
483
484 /* Find the null terminator */
485
486 Length = 0;
487 while (Aml[Length])
488 {
489 Length++;
490 }
491 Length++;
492 break;
493
494 case ARGP_NAME:
495 case ARGP_NAMESTRING:
496
497 AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
498 Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState);
499 return_VOID;
500
501 default:
502
503 ACPI_ERROR ((AE_INFO, "Invalid ArgType 0x%X", ArgType));
504 return_VOID;
505 }
506
507 AcpiPsInitOp (Arg, Opcode);
508 ParserState->Aml += Length;
509 return_VOID;
510 }
511
512
513 /*******************************************************************************
514 *
515 * FUNCTION: AcpiPsGetNextField
516 *
517 * PARAMETERS: ParserState - Current parser state object
518 *
519 * RETURN: A newly allocated FIELD op
520 *
521 * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField)
522 *
523 ******************************************************************************/
524
525 static ACPI_PARSE_OBJECT *
526 AcpiPsGetNextField (
527 ACPI_PARSE_STATE *ParserState)
528 {
529 UINT32 AmlOffset;
530 ACPI_PARSE_OBJECT *Field;
531 ACPI_PARSE_OBJECT *Arg = NULL;
532 UINT16 Opcode;
533 UINT32 Name;
534 UINT8 AccessType;
535 UINT8 AccessAttribute;
536 UINT8 AccessLength;
537 UINT32 PkgLength;
538 UINT8 *PkgEnd;
539 UINT32 BufferLength;
540
541
542 ACPI_FUNCTION_TRACE (PsGetNextField);
543
544
545 AmlOffset = (UINT32) ACPI_PTR_DIFF (
546 ParserState->Aml, ParserState->AmlStart);
547
548 /* Determine field type */
549
550 switch (ACPI_GET8 (ParserState->Aml))
551 {
552 case AML_FIELD_OFFSET_OP:
553
554 Opcode = AML_INT_RESERVEDFIELD_OP;
555 ParserState->Aml++;
556 break;
557
558 case AML_FIELD_ACCESS_OP:
559
560 Opcode = AML_INT_ACCESSFIELD_OP;
561 ParserState->Aml++;
562 break;
563
564 case AML_FIELD_CONNECTION_OP:
565
566 Opcode = AML_INT_CONNECTION_OP;
567 ParserState->Aml++;
568 break;
569
570 case AML_FIELD_EXT_ACCESS_OP:
571
572 Opcode = AML_INT_EXTACCESSFIELD_OP;
573 ParserState->Aml++;
574 break;
575
576 default:
577
578 Opcode = AML_INT_NAMEDFIELD_OP;
579 break;
580 }
581
582 /* Allocate a new field op */
583
584 Field = AcpiPsAllocOp (Opcode);
585 if (!Field)
586 {
587 return_PTR (NULL);
588 }
589
590 Field->Common.AmlOffset = AmlOffset;
591
592 /* Decode the field type */
593
594 switch (Opcode)
595 {
596 case AML_INT_NAMEDFIELD_OP:
597
598 /* Get the 4-character name */
599
600 ACPI_MOVE_32_TO_32 (&Name, ParserState->Aml);
601 AcpiPsSetName (Field, Name);
602 ParserState->Aml += ACPI_NAME_SIZE;
603
604 /* Get the length which is encoded as a package length */
605
606 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState);
607 break;
608
609
610 case AML_INT_RESERVEDFIELD_OP:
611
612 /* Get the length which is encoded as a package length */
613
614 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState);
615 break;
616
617
618 case AML_INT_ACCESSFIELD_OP:
619 case AML_INT_EXTACCESSFIELD_OP:
620
621 /*
622 * Get AccessType and AccessAttrib and merge into the field Op
623 * AccessType is first operand, AccessAttribute is second. stuff
624 * these bytes into the node integer value for convenience.
625 */
626
627 /* Get the two bytes (Type/Attribute) */
628
629 AccessType = ACPI_GET8 (ParserState->Aml);
630 ParserState->Aml++;
631 AccessAttribute = ACPI_GET8 (ParserState->Aml);
632 ParserState->Aml++;
633
634 Field->Common.Value.Integer = (UINT8) AccessType;
635 Field->Common.Value.Integer |= (UINT16) (AccessAttribute << 8);
636
637 /* This opcode has a third byte, AccessLength */
638
639 if (Opcode == AML_INT_EXTACCESSFIELD_OP)
640 {
641 AccessLength = ACPI_GET8 (ParserState->Aml);
642 ParserState->Aml++;
643
644 Field->Common.Value.Integer |= (UINT32) (AccessLength << 16);
645 }
646 break;
647
648
649 case AML_INT_CONNECTION_OP:
650
651 /*
652 * Argument for Connection operator can be either a Buffer
653 * (resource descriptor), or a NameString.
654 */
655 if (ACPI_GET8 (ParserState->Aml) == AML_BUFFER_OP)
656 {
657 ParserState->Aml++;
658
659 PkgEnd = ParserState->Aml;
660 PkgLength = AcpiPsGetNextPackageLength (ParserState);
661 PkgEnd += PkgLength;
662
663 if (ParserState->Aml < PkgEnd)
664 {
665 /* Non-empty list */
666
667 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP);
668 if (!Arg)
669 {
670 AcpiPsFreeOp (Field);
671 return_PTR (NULL);
672 }
673
674 /* Get the actual buffer length argument */
675
676 Opcode = ACPI_GET8 (ParserState->Aml);
677 ParserState->Aml++;
678
679 switch (Opcode)
680 {
681 case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
682
683 BufferLength = ACPI_GET8 (ParserState->Aml);
684 ParserState->Aml += 1;
685 break;
686
687 case AML_WORD_OP: /* AML_WORDDATA_ARG */
688
689 BufferLength = ACPI_GET16 (ParserState->Aml);
690 ParserState->Aml += 2;
691 break;
692
693 case AML_DWORD_OP: /* AML_DWORDATA_ARG */
694
695 BufferLength = ACPI_GET32 (ParserState->Aml);
696 ParserState->Aml += 4;
697 break;
698
699 default:
700
701 BufferLength = 0;
702 break;
703 }
704
705 /* Fill in bytelist data */
706
707 Arg->Named.Value.Size = BufferLength;
708 Arg->Named.Data = ParserState->Aml;
709 }
710
711 /* Skip to End of byte data */
712
713 ParserState->Aml = PkgEnd;
714 }
715 else
716 {
717 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
718 if (!Arg)
719 {
720 AcpiPsFreeOp (Field);
721 return_PTR (NULL);
722 }
723
724 /* Get the Namestring argument */
725
726 Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState);
727 }
728
729 /* Link the buffer/namestring to parent (CONNECTION_OP) */
730
731 AcpiPsAppendArg (Field, Arg);
732 break;
733
734
735 default:
736
737 /* Opcode was set in previous switch */
738 break;
739 }
740
741 return_PTR (Field);
742 }
743
744
745 /*******************************************************************************
746 *
747 * FUNCTION: AcpiPsGetNextArg
748 *
749 * PARAMETERS: WalkState - Current state
750 * ParserState - Current parser state object
751 * ArgType - The argument type (AML_*_ARG)
752 * ReturnArg - Where the next arg is returned
753 *
754 * RETURN: Status, and an op object containing the next argument.
755 *
756 * DESCRIPTION: Get next argument (including complex list arguments that require
777
778 switch (ArgType)
779 {
780 case ARGP_BYTEDATA:
781 case ARGP_WORDDATA:
782 case ARGP_DWORDDATA:
783 case ARGP_CHARLIST:
784 case ARGP_NAME:
785 case ARGP_NAMESTRING:
786
787 /* Constants, strings, and namestrings are all the same size */
788
789 Arg = AcpiPsAllocOp (AML_BYTE_OP);
790 if (!Arg)
791 {
792 return_ACPI_STATUS (AE_NO_MEMORY);
793 }
794 AcpiPsGetNextSimpleArg (ParserState, ArgType, Arg);
795 break;
796
797 case ARGP_PKGLENGTH:
798
799 /* Package length, nothing returned */
800
801 ParserState->PkgEnd = AcpiPsGetNextPackageEnd (ParserState);
802 break;
803
804 case ARGP_FIELDLIST:
805
806 if (ParserState->Aml < ParserState->PkgEnd)
807 {
808 /* Non-empty list */
809
810 while (ParserState->Aml < ParserState->PkgEnd)
811 {
812 Field = AcpiPsGetNextField (ParserState);
813 if (!Field)
814 {
815 return_ACPI_STATUS (AE_NO_MEMORY);
816 }
817
818 if (Prev)
819 {
820 Prev->Common.Next = Field;
821 }
822 else
823 {
824 Arg = Field;
825 }
826 Prev = Field;
827 }
828
829 /* Skip to End of byte data */
830
831 ParserState->Aml = ParserState->PkgEnd;
832 }
833 break;
834
835 case ARGP_BYTELIST:
836
837 if (ParserState->Aml < ParserState->PkgEnd)
838 {
839 /* Non-empty list */
840
841 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP);
842 if (!Arg)
843 {
844 return_ACPI_STATUS (AE_NO_MEMORY);
845 }
846
847 /* Fill in bytelist data */
848
849 Arg->Common.Value.Size = (UINT32)
850 ACPI_PTR_DIFF (ParserState->PkgEnd, ParserState->Aml);
851 Arg->Named.Data = ParserState->Aml;
852
853 /* Skip to End of byte data */
854
855 ParserState->Aml = ParserState->PkgEnd;
856 }
857 break;
858
859 case ARGP_TARGET:
860 case ARGP_SUPERNAME:
861 case ARGP_SIMPLENAME:
862
863 Subop = AcpiPsPeekOpcode (ParserState);
864 if (Subop == 0 ||
865 AcpiPsIsLeadingChar (Subop) ||
866 ACPI_IS_ROOT_PREFIX (Subop) ||
867 ACPI_IS_PARENT_PREFIX (Subop))
868 {
869 /* NullName or NameString */
870
871 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
872 if (!Arg)
873 {
874 return_ACPI_STATUS (AE_NO_MEMORY);
875 }
876
877 /* To support SuperName arg of Unload */
878
879 if (WalkState->Opcode == AML_UNLOAD_OP)
880 {
881 Status = AcpiPsGetNextNamepath (WalkState, ParserState, Arg, 1);
882
883 /*
884 * If the SuperName arg of Unload is a method call,
885 * we have restored the AML pointer, just free this Arg
886 */
887 if (Arg->Common.AmlOpcode == AML_INT_METHODCALL_OP)
888 {
889 AcpiPsFreeOp (Arg);
890 Arg = NULL;
891 }
892 }
893 else
894 {
895 Status = AcpiPsGetNextNamepath (WalkState, ParserState, Arg, 0);
896 }
897 }
898 else
899 {
900 /* Single complex argument, nothing returned */
901
902 WalkState->ArgCount = 1;
903 }
904 break;
905
906 case ARGP_DATAOBJ:
907 case ARGP_TERMARG:
908
909 /* Single complex argument, nothing returned */
910
911 WalkState->ArgCount = 1;
912 break;
913
914 case ARGP_DATAOBJLIST:
915 case ARGP_TERMLIST:
916 case ARGP_OBJLIST:
917
918 if (ParserState->Aml < ParserState->PkgEnd)
919 {
920 /* Non-empty list of variable arguments, nothing returned */
921
922 WalkState->ArgCount = ACPI_VAR_ARGS;
923 }
924 break;
925
926 default:
927
928 ACPI_ERROR ((AE_INFO, "Invalid ArgType: 0x%X", ArgType));
929 Status = AE_AML_OPERAND_TYPE;
930 break;
931 }
932
933 *ReturnArg = Arg;
934 return_ACPI_STATUS (Status);
935 }
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