1 /******************************************************************************
3 * Module Name: psargs - Parse AML opcode arguments
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************/
117 #include "accommon.h"
118 #include "acparser.h"
120 #include "acnamesp.h"
121 #include "acdispat.h"
123 #define _COMPONENT ACPI_PARSER
124 ACPI_MODULE_NAME ("psargs")
126 /* Local prototypes */
129 AcpiPsGetNextPackageLength (
130 ACPI_PARSE_STATE
*ParserState
);
132 static ACPI_PARSE_OBJECT
*
134 ACPI_PARSE_STATE
*ParserState
);
137 /*******************************************************************************
139 * FUNCTION: AcpiPsGetNextPackageLength
141 * PARAMETERS: ParserState - Current parser state object
143 * RETURN: Decoded package length. On completion, the AML pointer points
144 * past the length byte or bytes.
146 * DESCRIPTION: Decode and return a package length field.
147 * Note: Largest package length is 28 bits, from ACPI specification
149 ******************************************************************************/
152 AcpiPsGetNextPackageLength (
153 ACPI_PARSE_STATE
*ParserState
)
155 UINT8
*Aml
= ParserState
->Aml
;
156 UINT32 PackageLength
= 0;
158 UINT8 ByteZeroMask
= 0x3F; /* Default [0:5] */
161 ACPI_FUNCTION_TRACE (PsGetNextPackageLength
);
165 * Byte 0 bits [6:7] contain the number of additional bytes
166 * used to encode the package length, either 0,1,2, or 3
168 ByteCount
= (Aml
[0] >> 6);
169 ParserState
->Aml
+= ((ACPI_SIZE
) ByteCount
+ 1);
171 /* Get bytes 3, 2, 1 as needed */
176 * Final bit positions for the package length bytes:
182 PackageLength
|= (Aml
[ByteCount
] << ((ByteCount
<< 3) - 4));
184 ByteZeroMask
= 0x0F; /* Use bits [0:3] of byte 0 */
188 /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */
190 PackageLength
|= (Aml
[0] & ByteZeroMask
);
191 return_UINT32 (PackageLength
);
195 /*******************************************************************************
197 * FUNCTION: AcpiPsGetNextPackageEnd
199 * PARAMETERS: ParserState - Current parser state object
201 * RETURN: Pointer to end-of-package +1
203 * DESCRIPTION: Get next package length and return a pointer past the end of
204 * the package. Consumes the package length field
206 ******************************************************************************/
209 AcpiPsGetNextPackageEnd (
210 ACPI_PARSE_STATE
*ParserState
)
212 UINT8
*Start
= ParserState
->Aml
;
213 UINT32 PackageLength
;
216 ACPI_FUNCTION_TRACE (PsGetNextPackageEnd
);
219 /* Function below updates ParserState->Aml */
221 PackageLength
= AcpiPsGetNextPackageLength (ParserState
);
223 return_PTR (Start
+ PackageLength
); /* end of package */
227 /*******************************************************************************
229 * FUNCTION: AcpiPsGetNextNamestring
231 * PARAMETERS: ParserState - Current parser state object
233 * RETURN: Pointer to the start of the name string (pointer points into
236 * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
237 * prefix characters. Set parser state to point past the string.
238 * (Name is consumed from the AML.)
240 ******************************************************************************/
243 AcpiPsGetNextNamestring (
244 ACPI_PARSE_STATE
*ParserState
)
246 UINT8
*Start
= ParserState
->Aml
;
247 UINT8
*End
= ParserState
->Aml
;
250 ACPI_FUNCTION_TRACE (PsGetNextNamestring
);
253 /* Point past any namestring prefix characters (backslash or carat) */
255 while (ACPI_IS_ROOT_PREFIX (*End
) ||
256 ACPI_IS_PARENT_PREFIX (*End
))
261 /* Decode the path prefix character */
276 case AML_DUAL_NAME_PREFIX
:
278 /* Two name segments */
280 End
+= 1 + (2 * ACPI_NAME_SIZE
);
283 case AML_MULTI_NAME_PREFIX_OP
:
285 /* Multiple name segments, 4 chars each, count in next byte */
287 End
+= 2 + (*(End
+ 1) * ACPI_NAME_SIZE
);
292 /* Single name segment */
294 End
+= ACPI_NAME_SIZE
;
298 ParserState
->Aml
= End
;
299 return_PTR ((char *) Start
);
303 /*******************************************************************************
305 * FUNCTION: AcpiPsGetNextNamepath
307 * PARAMETERS: ParserState - Current parser state object
308 * Arg - Where the namepath will be stored
309 * ArgCount - If the namepath points to a control method
310 * the method's argument is returned here.
311 * PossibleMethodCall - Whether the namepath can possibly be the
312 * start of a method call
316 * DESCRIPTION: Get next name (if method call, return # of required args).
317 * Names are looked up in the internal namespace to determine
318 * if the name represents a control method. If a method
319 * is found, the number of arguments to the method is returned.
320 * This information is critical for parsing to continue correctly.
322 ******************************************************************************/
325 AcpiPsGetNextNamepath (
326 ACPI_WALK_STATE
*WalkState
,
327 ACPI_PARSE_STATE
*ParserState
,
328 ACPI_PARSE_OBJECT
*Arg
,
329 BOOLEAN PossibleMethodCall
)
333 ACPI_PARSE_OBJECT
*NameOp
;
334 ACPI_OPERAND_OBJECT
*MethodDesc
;
335 ACPI_NAMESPACE_NODE
*Node
;
336 UINT8
*Start
= ParserState
->Aml
;
339 ACPI_FUNCTION_TRACE (PsGetNextNamepath
);
342 Path
= AcpiPsGetNextNamestring (ParserState
);
343 AcpiPsInitOp (Arg
, AML_INT_NAMEPATH_OP
);
345 /* Null path case is allowed, just exit */
349 Arg
->Common
.Value
.Name
= Path
;
350 return_ACPI_STATUS (AE_OK
);
354 * Lookup the name in the internal namespace, starting with the current
355 * scope. We don't want to add anything new to the namespace here,
356 * however, so we use MODE_EXECUTE.
357 * Allow searching of the parent tree, but don't open a new scope -
358 * we just want to lookup the object (must be mode EXECUTE to perform
361 Status
= AcpiNsLookup (WalkState
->ScopeInfo
, Path
,
362 ACPI_TYPE_ANY
, ACPI_IMODE_EXECUTE
,
363 ACPI_NS_SEARCH_PARENT
| ACPI_NS_DONT_OPEN_SCOPE
, NULL
, &Node
);
366 * If this name is a control method invocation, we must
367 * setup the method call
369 if (ACPI_SUCCESS (Status
) &&
370 PossibleMethodCall
&&
371 (Node
->Type
== ACPI_TYPE_METHOD
))
373 if (WalkState
->Opcode
== AML_UNLOAD_OP
)
376 * AcpiPsGetNextNamestring has increased the AML pointer,
377 * so we need to restore the saved AML pointer for method call.
379 WalkState
->ParserState
.Aml
= Start
;
380 WalkState
->ArgCount
= 1;
381 AcpiPsInitOp (Arg
, AML_INT_METHODCALL_OP
);
382 return_ACPI_STATUS (AE_OK
);
385 /* This name is actually a control method invocation */
387 MethodDesc
= AcpiNsGetAttachedObject (Node
);
388 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
389 "Control Method - %p Desc %p Path=%p\n", Node
, MethodDesc
, Path
));
391 NameOp
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, Start
);
394 return_ACPI_STATUS (AE_NO_MEMORY
);
397 /* Change Arg into a METHOD CALL and attach name to it */
399 AcpiPsInitOp (Arg
, AML_INT_METHODCALL_OP
);
400 NameOp
->Common
.Value
.Name
= Path
;
402 /* Point METHODCALL/NAME to the METHOD Node */
404 NameOp
->Common
.Node
= Node
;
405 AcpiPsAppendArg (Arg
, NameOp
);
409 ACPI_ERROR ((AE_INFO
,
410 "Control Method %p has no attached object",
412 return_ACPI_STATUS (AE_AML_INTERNAL
);
415 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
416 "Control Method - %p Args %X\n",
417 Node
, MethodDesc
->Method
.ParamCount
));
419 /* Get the number of arguments to expect */
421 WalkState
->ArgCount
= MethodDesc
->Method
.ParamCount
;
422 return_ACPI_STATUS (AE_OK
);
426 * Special handling if the name was not found during the lookup -
427 * some NotFound cases are allowed
429 if (Status
== AE_NOT_FOUND
)
431 /* 1) NotFound is ok during load pass 1/2 (allow forward references) */
433 if ((WalkState
->ParseFlags
& ACPI_PARSE_MODE_MASK
) !=
439 /* 2) NotFound during a CondRefOf(x) is ok by definition */
441 else if (WalkState
->Op
->Common
.AmlOpcode
== AML_COND_REF_OF_OP
)
447 * 3) NotFound while building a Package is ok at this point, we
448 * may flag as an error later if slack mode is not enabled.
449 * (Some ASL code depends on allowing this behavior)
451 else if ((Arg
->Common
.Parent
) &&
452 ((Arg
->Common
.Parent
->Common
.AmlOpcode
== AML_PACKAGE_OP
) ||
453 (Arg
->Common
.Parent
->Common
.AmlOpcode
== AML_VAR_PACKAGE_OP
)))
459 /* Final exception check (may have been changed from code above) */
461 if (ACPI_FAILURE (Status
))
463 ACPI_ERROR_NAMESPACE (Path
, Status
);
465 if ((WalkState
->ParseFlags
& ACPI_PARSE_MODE_MASK
) ==
468 /* Report a control method execution error */
470 Status
= AcpiDsMethodError (Status
, WalkState
);
474 /* Save the namepath */
476 Arg
->Common
.Value
.Name
= Path
;
477 return_ACPI_STATUS (Status
);
481 /*******************************************************************************
483 * FUNCTION: AcpiPsGetNextSimpleArg
485 * PARAMETERS: ParserState - Current parser state object
486 * ArgType - The argument type (AML_*_ARG)
487 * Arg - Where the argument is returned
491 * DESCRIPTION: Get the next simple argument (constant, string, or namestring)
493 ******************************************************************************/
496 AcpiPsGetNextSimpleArg (
497 ACPI_PARSE_STATE
*ParserState
,
499 ACPI_PARSE_OBJECT
*Arg
)
503 UINT8
*Aml
= ParserState
->Aml
;
506 ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg
, ArgType
);
513 /* Get 1 byte from the AML stream */
515 Opcode
= AML_BYTE_OP
;
516 Arg
->Common
.Value
.Integer
= (UINT64
) *Aml
;
522 /* Get 2 bytes from the AML stream */
524 Opcode
= AML_WORD_OP
;
525 ACPI_MOVE_16_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
531 /* Get 4 bytes from the AML stream */
533 Opcode
= AML_DWORD_OP
;
534 ACPI_MOVE_32_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
540 /* Get 8 bytes from the AML stream */
542 Opcode
= AML_QWORD_OP
;
543 ACPI_MOVE_64_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
549 /* Get a pointer to the string, point past the string */
551 Opcode
= AML_STRING_OP
;
552 Arg
->Common
.Value
.String
= ACPI_CAST_PTR (char, Aml
);
554 /* Find the null terminator */
565 case ARGP_NAMESTRING
:
567 AcpiPsInitOp (Arg
, AML_INT_NAMEPATH_OP
);
568 Arg
->Common
.Value
.Name
= AcpiPsGetNextNamestring (ParserState
);
573 ACPI_ERROR ((AE_INFO
, "Invalid ArgType 0x%X", ArgType
));
577 AcpiPsInitOp (Arg
, Opcode
);
578 ParserState
->Aml
+= Length
;
583 /*******************************************************************************
585 * FUNCTION: AcpiPsGetNextField
587 * PARAMETERS: ParserState - Current parser state object
589 * RETURN: A newly allocated FIELD op
591 * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField)
593 ******************************************************************************/
595 static ACPI_PARSE_OBJECT
*
597 ACPI_PARSE_STATE
*ParserState
)
600 ACPI_PARSE_OBJECT
*Field
;
601 ACPI_PARSE_OBJECT
*Arg
= NULL
;
605 UINT8 AccessAttribute
;
612 ACPI_FUNCTION_TRACE (PsGetNextField
);
615 Aml
= ParserState
->Aml
;
617 /* Determine field type */
619 switch (ACPI_GET8 (ParserState
->Aml
))
621 case AML_FIELD_OFFSET_OP
:
623 Opcode
= AML_INT_RESERVEDFIELD_OP
;
627 case AML_FIELD_ACCESS_OP
:
629 Opcode
= AML_INT_ACCESSFIELD_OP
;
633 case AML_FIELD_CONNECTION_OP
:
635 Opcode
= AML_INT_CONNECTION_OP
;
639 case AML_FIELD_EXT_ACCESS_OP
:
641 Opcode
= AML_INT_EXTACCESSFIELD_OP
;
647 Opcode
= AML_INT_NAMEDFIELD_OP
;
651 /* Allocate a new field op */
653 Field
= AcpiPsAllocOp (Opcode
, Aml
);
659 /* Decode the field type */
663 case AML_INT_NAMEDFIELD_OP
:
665 /* Get the 4-character name */
667 ACPI_MOVE_32_TO_32 (&Name
, ParserState
->Aml
);
668 AcpiPsSetName (Field
, Name
);
669 ParserState
->Aml
+= ACPI_NAME_SIZE
;
671 /* Get the length which is encoded as a package length */
673 Field
->Common
.Value
.Size
= AcpiPsGetNextPackageLength (ParserState
);
677 case AML_INT_RESERVEDFIELD_OP
:
679 /* Get the length which is encoded as a package length */
681 Field
->Common
.Value
.Size
= AcpiPsGetNextPackageLength (ParserState
);
685 case AML_INT_ACCESSFIELD_OP
:
686 case AML_INT_EXTACCESSFIELD_OP
:
689 * Get AccessType and AccessAttrib and merge into the field Op
690 * AccessType is first operand, AccessAttribute is second. stuff
691 * these bytes into the node integer value for convenience.
694 /* Get the two bytes (Type/Attribute) */
696 AccessType
= ACPI_GET8 (ParserState
->Aml
);
698 AccessAttribute
= ACPI_GET8 (ParserState
->Aml
);
701 Field
->Common
.Value
.Integer
= (UINT8
) AccessType
;
702 Field
->Common
.Value
.Integer
|= (UINT16
) (AccessAttribute
<< 8);
704 /* This opcode has a third byte, AccessLength */
706 if (Opcode
== AML_INT_EXTACCESSFIELD_OP
)
708 AccessLength
= ACPI_GET8 (ParserState
->Aml
);
711 Field
->Common
.Value
.Integer
|= (UINT32
) (AccessLength
<< 16);
716 case AML_INT_CONNECTION_OP
:
719 * Argument for Connection operator can be either a Buffer
720 * (resource descriptor), or a NameString.
722 Aml
= ParserState
->Aml
;
723 if (ACPI_GET8 (ParserState
->Aml
) == AML_BUFFER_OP
)
727 PkgEnd
= ParserState
->Aml
;
728 PkgLength
= AcpiPsGetNextPackageLength (ParserState
);
731 if (ParserState
->Aml
< PkgEnd
)
735 Arg
= AcpiPsAllocOp (AML_INT_BYTELIST_OP
, Aml
);
738 AcpiPsFreeOp (Field
);
742 /* Get the actual buffer length argument */
744 Opcode
= ACPI_GET8 (ParserState
->Aml
);
749 case AML_BYTE_OP
: /* AML_BYTEDATA_ARG */
751 BufferLength
= ACPI_GET8 (ParserState
->Aml
);
752 ParserState
->Aml
+= 1;
755 case AML_WORD_OP
: /* AML_WORDDATA_ARG */
757 BufferLength
= ACPI_GET16 (ParserState
->Aml
);
758 ParserState
->Aml
+= 2;
761 case AML_DWORD_OP
: /* AML_DWORDATA_ARG */
763 BufferLength
= ACPI_GET32 (ParserState
->Aml
);
764 ParserState
->Aml
+= 4;
773 /* Fill in bytelist data */
775 Arg
->Named
.Value
.Size
= BufferLength
;
776 Arg
->Named
.Data
= ParserState
->Aml
;
779 /* Skip to End of byte data */
781 ParserState
->Aml
= PkgEnd
;
785 Arg
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, Aml
);
788 AcpiPsFreeOp (Field
);
792 /* Get the Namestring argument */
794 Arg
->Common
.Value
.Name
= AcpiPsGetNextNamestring (ParserState
);
797 /* Link the buffer/namestring to parent (CONNECTION_OP) */
799 AcpiPsAppendArg (Field
, Arg
);
805 /* Opcode was set in previous switch */
813 /*******************************************************************************
815 * FUNCTION: AcpiPsGetNextArg
817 * PARAMETERS: WalkState - Current state
818 * ParserState - Current parser state object
819 * ArgType - The argument type (AML_*_ARG)
820 * ReturnArg - Where the next arg is returned
822 * RETURN: Status, and an op object containing the next argument.
824 * DESCRIPTION: Get next argument (including complex list arguments that require
825 * pushing the parser stack)
827 ******************************************************************************/
831 ACPI_WALK_STATE
*WalkState
,
832 ACPI_PARSE_STATE
*ParserState
,
834 ACPI_PARSE_OBJECT
**ReturnArg
)
836 ACPI_PARSE_OBJECT
*Arg
= NULL
;
837 ACPI_PARSE_OBJECT
*Prev
= NULL
;
838 ACPI_PARSE_OBJECT
*Field
;
840 ACPI_STATUS Status
= AE_OK
;
843 ACPI_FUNCTION_TRACE_PTR (PsGetNextArg
, ParserState
);
853 case ARGP_NAMESTRING
:
855 /* Constants, strings, and namestrings are all the same size */
857 Arg
= AcpiPsAllocOp (AML_BYTE_OP
, ParserState
->Aml
);
860 return_ACPI_STATUS (AE_NO_MEMORY
);
862 AcpiPsGetNextSimpleArg (ParserState
, ArgType
, Arg
);
867 /* Package length, nothing returned */
869 ParserState
->PkgEnd
= AcpiPsGetNextPackageEnd (ParserState
);
874 if (ParserState
->Aml
< ParserState
->PkgEnd
)
878 while (ParserState
->Aml
< ParserState
->PkgEnd
)
880 Field
= AcpiPsGetNextField (ParserState
);
883 return_ACPI_STATUS (AE_NO_MEMORY
);
888 Prev
->Common
.Next
= Field
;
897 /* Skip to End of byte data */
899 ParserState
->Aml
= ParserState
->PkgEnd
;
905 if (ParserState
->Aml
< ParserState
->PkgEnd
)
909 Arg
= AcpiPsAllocOp (AML_INT_BYTELIST_OP
,
913 return_ACPI_STATUS (AE_NO_MEMORY
);
916 /* Fill in bytelist data */
918 Arg
->Common
.Value
.Size
= (UINT32
)
919 ACPI_PTR_DIFF (ParserState
->PkgEnd
, ParserState
->Aml
);
920 Arg
->Named
.Data
= ParserState
->Aml
;
922 /* Skip to End of byte data */
924 ParserState
->Aml
= ParserState
->PkgEnd
;
930 case ARGP_SIMPLENAME
:
932 Subop
= AcpiPsPeekOpcode (ParserState
);
934 AcpiPsIsLeadingChar (Subop
) ||
935 ACPI_IS_ROOT_PREFIX (Subop
) ||
936 ACPI_IS_PARENT_PREFIX (Subop
))
938 /* NullName or NameString */
940 Arg
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, ParserState
->Aml
);
943 return_ACPI_STATUS (AE_NO_MEMORY
);
946 /* To support SuperName arg of Unload */
948 if (WalkState
->Opcode
== AML_UNLOAD_OP
)
950 Status
= AcpiPsGetNextNamepath (WalkState
, ParserState
, Arg
, 1);
953 * If the SuperName arg of Unload is a method call,
954 * we have restored the AML pointer, just free this Arg
956 if (Arg
->Common
.AmlOpcode
== AML_INT_METHODCALL_OP
)
964 Status
= AcpiPsGetNextNamepath (WalkState
, ParserState
, Arg
, 0);
969 /* Single complex argument, nothing returned */
971 WalkState
->ArgCount
= 1;
978 /* Single complex argument, nothing returned */
980 WalkState
->ArgCount
= 1;
983 case ARGP_DATAOBJLIST
:
987 if (ParserState
->Aml
< ParserState
->PkgEnd
)
989 /* Non-empty list of variable arguments, nothing returned */
991 WalkState
->ArgCount
= ACPI_VAR_ARGS
;
997 ACPI_ERROR ((AE_INFO
, "Invalid ArgType: 0x%X", ArgType
));
998 Status
= AE_AML_OPERAND_TYPE
;
1003 return_ACPI_STATUS (Status
);