1 /******************************************************************************
3 * Module Name: psargs - Parse AML opcode arguments
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2021, 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 *****************************************************************************
116 * Alternatively, you may choose to be licensed under the terms of the
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
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.
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.
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.
150 *****************************************************************************/
153 #include "accommon.h"
154 #include "acparser.h"
156 #include "acnamesp.h"
157 #include "acdispat.h"
158 #include "acconvert.h"
160 #define _COMPONENT ACPI_PARSER
161 ACPI_MODULE_NAME ("psargs")
163 /* Local prototypes */
166 AcpiPsGetNextPackageLength (
167 ACPI_PARSE_STATE
*ParserState
);
169 static ACPI_PARSE_OBJECT
*
171 ACPI_PARSE_STATE
*ParserState
);
174 /*******************************************************************************
176 * FUNCTION: AcpiPsGetNextPackageLength
178 * PARAMETERS: ParserState - Current parser state object
180 * RETURN: Decoded package length. On completion, the AML pointer points
181 * past the length byte or bytes.
183 * DESCRIPTION: Decode and return a package length field.
184 * Note: Largest package length is 28 bits, from ACPI specification
186 ******************************************************************************/
189 AcpiPsGetNextPackageLength (
190 ACPI_PARSE_STATE
*ParserState
)
192 UINT8
*Aml
= ParserState
->Aml
;
193 UINT32 PackageLength
= 0;
195 UINT8 ByteZeroMask
= 0x3F; /* Default [0:5] */
198 ACPI_FUNCTION_TRACE (PsGetNextPackageLength
);
202 * Byte 0 bits [6:7] contain the number of additional bytes
203 * used to encode the package length, either 0,1,2, or 3
205 ByteCount
= (Aml
[0] >> 6);
206 ParserState
->Aml
+= ((ACPI_SIZE
) ByteCount
+ 1);
208 /* Get bytes 3, 2, 1 as needed */
213 * Final bit positions for the package length bytes:
219 PackageLength
|= (Aml
[ByteCount
] << ((ByteCount
<< 3) - 4));
221 ByteZeroMask
= 0x0F; /* Use bits [0:3] of byte 0 */
225 /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */
227 PackageLength
|= (Aml
[0] & ByteZeroMask
);
228 return_UINT32 (PackageLength
);
232 /*******************************************************************************
234 * FUNCTION: AcpiPsGetNextPackageEnd
236 * PARAMETERS: ParserState - Current parser state object
238 * RETURN: Pointer to end-of-package +1
240 * DESCRIPTION: Get next package length and return a pointer past the end of
241 * the package. Consumes the package length field
243 ******************************************************************************/
246 AcpiPsGetNextPackageEnd (
247 ACPI_PARSE_STATE
*ParserState
)
249 UINT8
*Start
= ParserState
->Aml
;
250 UINT32 PackageLength
;
253 ACPI_FUNCTION_TRACE (PsGetNextPackageEnd
);
256 /* Function below updates ParserState->Aml */
258 PackageLength
= AcpiPsGetNextPackageLength (ParserState
);
260 return_PTR (Start
+ PackageLength
); /* end of package */
264 /*******************************************************************************
266 * FUNCTION: AcpiPsGetNextNamestring
268 * PARAMETERS: ParserState - Current parser state object
270 * RETURN: Pointer to the start of the name string (pointer points into
273 * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
274 * prefix characters. Set parser state to point past the string.
275 * (Name is consumed from the AML.)
277 ******************************************************************************/
280 AcpiPsGetNextNamestring (
281 ACPI_PARSE_STATE
*ParserState
)
283 UINT8
*Start
= ParserState
->Aml
;
284 UINT8
*End
= ParserState
->Aml
;
287 ACPI_FUNCTION_TRACE (PsGetNextNamestring
);
290 /* Point past any namestring prefix characters (backslash or carat) */
292 while (ACPI_IS_ROOT_PREFIX (*End
) ||
293 ACPI_IS_PARENT_PREFIX (*End
))
298 /* Decode the path prefix character */
313 case AML_DUAL_NAME_PREFIX
:
315 /* Two name segments */
317 End
+= 1 + (2 * ACPI_NAMESEG_SIZE
);
320 case AML_MULTI_NAME_PREFIX
:
322 /* Multiple name segments, 4 chars each, count in next byte */
324 End
+= 2 + (*(End
+ 1) * ACPI_NAMESEG_SIZE
);
329 /* Single name segment */
331 End
+= ACPI_NAMESEG_SIZE
;
335 ParserState
->Aml
= End
;
336 return_PTR ((char *) Start
);
340 /*******************************************************************************
342 * FUNCTION: AcpiPsGetNextNamepath
344 * PARAMETERS: ParserState - Current parser state object
345 * Arg - Where the namepath will be stored
346 * ArgCount - If the namepath points to a control method
347 * the method's argument is returned here.
348 * PossibleMethodCall - Whether the namepath can possibly be the
349 * start of a method call
353 * DESCRIPTION: Get next name (if method call, return # of required args).
354 * Names are looked up in the internal namespace to determine
355 * if the name represents a control method. If a method
356 * is found, the number of arguments to the method is returned.
357 * This information is critical for parsing to continue correctly.
359 ******************************************************************************/
362 AcpiPsGetNextNamepath (
363 ACPI_WALK_STATE
*WalkState
,
364 ACPI_PARSE_STATE
*ParserState
,
365 ACPI_PARSE_OBJECT
*Arg
,
366 BOOLEAN PossibleMethodCall
)
370 ACPI_PARSE_OBJECT
*NameOp
;
371 ACPI_OPERAND_OBJECT
*MethodDesc
;
372 ACPI_NAMESPACE_NODE
*Node
;
373 UINT8
*Start
= ParserState
->Aml
;
376 ACPI_FUNCTION_TRACE (PsGetNextNamepath
);
379 Path
= AcpiPsGetNextNamestring (ParserState
);
380 AcpiPsInitOp (Arg
, AML_INT_NAMEPATH_OP
);
382 /* Null path case is allowed, just exit */
386 Arg
->Common
.Value
.Name
= Path
;
387 return_ACPI_STATUS (AE_OK
);
391 * Lookup the name in the internal namespace, starting with the current
392 * scope. We don't want to add anything new to the namespace here,
393 * however, so we use MODE_EXECUTE.
394 * Allow searching of the parent tree, but don't open a new scope -
395 * we just want to lookup the object (must be mode EXECUTE to perform
398 Status
= AcpiNsLookup (WalkState
->ScopeInfo
, Path
,
399 ACPI_TYPE_ANY
, ACPI_IMODE_EXECUTE
,
400 ACPI_NS_SEARCH_PARENT
| ACPI_NS_DONT_OPEN_SCOPE
, NULL
, &Node
);
403 * If this name is a control method invocation, we must
404 * setup the method call
406 if (ACPI_SUCCESS (Status
) &&
407 PossibleMethodCall
&&
408 (Node
->Type
== ACPI_TYPE_METHOD
))
410 if ((GET_CURRENT_ARG_TYPE (WalkState
->ArgTypes
) == ARGP_SUPERNAME
) ||
411 (GET_CURRENT_ARG_TYPE (WalkState
->ArgTypes
) == ARGP_TARGET
))
414 * AcpiPsGetNextNamestring has increased the AML pointer past
415 * the method invocation namestring, so we need to restore the
416 * saved AML pointer back to the original method invocation
419 WalkState
->ParserState
.Aml
= Start
;
420 WalkState
->ArgCount
= 1;
421 AcpiPsInitOp (Arg
, AML_INT_METHODCALL_OP
);
424 /* This name is actually a control method invocation */
426 MethodDesc
= AcpiNsGetAttachedObject (Node
);
427 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
428 "Control Method invocation %4.4s - %p Desc %p Path=%p\n",
429 Node
->Name
.Ascii
, Node
, MethodDesc
, Path
));
431 NameOp
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, Start
);
434 return_ACPI_STATUS (AE_NO_MEMORY
);
437 /* Change Arg into a METHOD CALL and attach name to it */
439 AcpiPsInitOp (Arg
, AML_INT_METHODCALL_OP
);
440 NameOp
->Common
.Value
.Name
= Path
;
442 /* Point METHODCALL/NAME to the METHOD Node */
444 NameOp
->Common
.Node
= Node
;
445 AcpiPsAppendArg (Arg
, NameOp
);
449 ACPI_ERROR ((AE_INFO
,
450 "Control Method %p has no attached object",
452 return_ACPI_STATUS (AE_AML_INTERNAL
);
455 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
456 "Control Method - %p Args %X\n",
457 Node
, MethodDesc
->Method
.ParamCount
));
459 /* Get the number of arguments to expect */
461 WalkState
->ArgCount
= MethodDesc
->Method
.ParamCount
;
462 return_ACPI_STATUS (AE_OK
);
466 * Special handling if the name was not found during the lookup -
467 * some NotFound cases are allowed
469 if (Status
== AE_NOT_FOUND
)
471 /* 1) NotFound is ok during load pass 1/2 (allow forward references) */
473 if ((WalkState
->ParseFlags
& ACPI_PARSE_MODE_MASK
) !=
479 /* 2) NotFound during a CondRefOf(x) is ok by definition */
481 else if (WalkState
->Op
->Common
.AmlOpcode
== AML_CONDITIONAL_REF_OF_OP
)
487 * 3) NotFound while building a Package is ok at this point, we
488 * may flag as an error later if slack mode is not enabled.
489 * (Some ASL code depends on allowing this behavior)
491 else if ((Arg
->Common
.Parent
) &&
492 ((Arg
->Common
.Parent
->Common
.AmlOpcode
== AML_PACKAGE_OP
) ||
493 (Arg
->Common
.Parent
->Common
.AmlOpcode
== AML_VARIABLE_PACKAGE_OP
)))
499 /* Final exception check (may have been changed from code above) */
501 if (ACPI_FAILURE (Status
))
503 ACPI_ERROR_NAMESPACE (WalkState
->ScopeInfo
, Path
, Status
);
505 if ((WalkState
->ParseFlags
& ACPI_PARSE_MODE_MASK
) ==
508 /* Report a control method execution error */
510 Status
= AcpiDsMethodError (Status
, WalkState
);
514 /* Save the namepath */
516 Arg
->Common
.Value
.Name
= Path
;
517 return_ACPI_STATUS (Status
);
521 /*******************************************************************************
523 * FUNCTION: AcpiPsGetNextSimpleArg
525 * PARAMETERS: ParserState - Current parser state object
526 * ArgType - The argument type (AML_*_ARG)
527 * Arg - Where the argument is returned
531 * DESCRIPTION: Get the next simple argument (constant, string, or namestring)
533 ******************************************************************************/
536 AcpiPsGetNextSimpleArg (
537 ACPI_PARSE_STATE
*ParserState
,
539 ACPI_PARSE_OBJECT
*Arg
)
543 UINT8
*Aml
= ParserState
->Aml
;
546 ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg
, ArgType
);
553 /* Get 1 byte from the AML stream */
555 Opcode
= AML_BYTE_OP
;
556 Arg
->Common
.Value
.Integer
= (UINT64
) *Aml
;
562 /* Get 2 bytes from the AML stream */
564 Opcode
= AML_WORD_OP
;
565 ACPI_MOVE_16_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
571 /* Get 4 bytes from the AML stream */
573 Opcode
= AML_DWORD_OP
;
574 ACPI_MOVE_32_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
580 /* Get 8 bytes from the AML stream */
582 Opcode
= AML_QWORD_OP
;
583 ACPI_MOVE_64_TO_64 (&Arg
->Common
.Value
.Integer
, Aml
);
589 /* Get a pointer to the string, point past the string */
591 Opcode
= AML_STRING_OP
;
592 Arg
->Common
.Value
.String
= ACPI_CAST_PTR (char, Aml
);
594 /* Find the null terminator */
605 case ARGP_NAMESTRING
:
607 AcpiPsInitOp (Arg
, AML_INT_NAMEPATH_OP
);
608 Arg
->Common
.Value
.Name
= AcpiPsGetNextNamestring (ParserState
);
613 ACPI_ERROR ((AE_INFO
, "Invalid ArgType 0x%X", ArgType
));
617 AcpiPsInitOp (Arg
, Opcode
);
618 ParserState
->Aml
+= Length
;
623 /*******************************************************************************
625 * FUNCTION: AcpiPsGetNextField
627 * PARAMETERS: ParserState - Current parser state object
629 * RETURN: A newly allocated FIELD op
631 * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField)
633 ******************************************************************************/
635 static ACPI_PARSE_OBJECT
*
637 ACPI_PARSE_STATE
*ParserState
)
640 ACPI_PARSE_OBJECT
*Field
;
641 ACPI_PARSE_OBJECT
*Arg
= NULL
;
645 UINT8 AccessAttribute
;
652 ACPI_FUNCTION_TRACE (PsGetNextField
);
655 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
656 Aml
= ParserState
->Aml
;
658 /* Determine field type */
660 switch (ACPI_GET8 (ParserState
->Aml
))
662 case AML_FIELD_OFFSET_OP
:
664 Opcode
= AML_INT_RESERVEDFIELD_OP
;
668 case AML_FIELD_ACCESS_OP
:
670 Opcode
= AML_INT_ACCESSFIELD_OP
;
674 case AML_FIELD_CONNECTION_OP
:
676 Opcode
= AML_INT_CONNECTION_OP
;
680 case AML_FIELD_EXT_ACCESS_OP
:
682 Opcode
= AML_INT_EXTACCESSFIELD_OP
;
688 Opcode
= AML_INT_NAMEDFIELD_OP
;
692 /* Allocate a new field op */
694 Field
= AcpiPsAllocOp (Opcode
, Aml
);
700 /* Decode the field type */
702 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
705 case AML_INT_NAMEDFIELD_OP
:
707 /* Get the 4-character name */
709 ACPI_MOVE_32_TO_32 (&Name
, ParserState
->Aml
);
710 AcpiPsSetName (Field
, Name
);
711 ParserState
->Aml
+= ACPI_NAMESEG_SIZE
;
714 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
716 #ifdef ACPI_ASL_COMPILER
718 * Because the package length isn't represented as a parse tree object,
719 * take comments surrounding this and add to the previously created
722 if (Field
->Common
.InlineComment
)
724 Field
->Common
.NameComment
= Field
->Common
.InlineComment
;
726 Field
->Common
.InlineComment
= AcpiGbl_CurrentInlineComment
;
727 AcpiGbl_CurrentInlineComment
= NULL
;
730 /* Get the length which is encoded as a package length */
732 Field
->Common
.Value
.Size
= AcpiPsGetNextPackageLength (ParserState
);
736 case AML_INT_RESERVEDFIELD_OP
:
738 /* Get the length which is encoded as a package length */
740 Field
->Common
.Value
.Size
= AcpiPsGetNextPackageLength (ParserState
);
744 case AML_INT_ACCESSFIELD_OP
:
745 case AML_INT_EXTACCESSFIELD_OP
:
748 * Get AccessType and AccessAttrib and merge into the field Op
749 * AccessType is first operand, AccessAttribute is second. stuff
750 * these bytes into the node integer value for convenience.
753 /* Get the two bytes (Type/Attribute) */
755 AccessType
= ACPI_GET8 (ParserState
->Aml
);
757 AccessAttribute
= ACPI_GET8 (ParserState
->Aml
);
760 Field
->Common
.Value
.Integer
= (UINT8
) AccessType
;
761 Field
->Common
.Value
.Integer
|= (UINT16
) (AccessAttribute
<< 8);
763 /* This opcode has a third byte, AccessLength */
765 if (Opcode
== AML_INT_EXTACCESSFIELD_OP
)
767 AccessLength
= ACPI_GET8 (ParserState
->Aml
);
770 Field
->Common
.Value
.Integer
|= (UINT32
) (AccessLength
<< 16);
775 case AML_INT_CONNECTION_OP
:
778 * Argument for Connection operator can be either a Buffer
779 * (resource descriptor), or a NameString.
781 Aml
= ParserState
->Aml
;
782 if (ACPI_GET8 (ParserState
->Aml
) == AML_BUFFER_OP
)
786 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
787 PkgEnd
= ParserState
->Aml
;
788 PkgLength
= AcpiPsGetNextPackageLength (ParserState
);
791 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
792 if (ParserState
->Aml
< PkgEnd
)
796 Arg
= AcpiPsAllocOp (AML_INT_BYTELIST_OP
, Aml
);
799 AcpiPsFreeOp (Field
);
803 /* Get the actual buffer length argument */
805 Opcode
= ACPI_GET8 (ParserState
->Aml
);
808 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
811 case AML_BYTE_OP
: /* AML_BYTEDATA_ARG */
813 BufferLength
= ACPI_GET8 (ParserState
->Aml
);
814 ParserState
->Aml
+= 1;
817 case AML_WORD_OP
: /* AML_WORDDATA_ARG */
819 BufferLength
= ACPI_GET16 (ParserState
->Aml
);
820 ParserState
->Aml
+= 2;
823 case AML_DWORD_OP
: /* AML_DWORDATA_ARG */
825 BufferLength
= ACPI_GET32 (ParserState
->Aml
);
826 ParserState
->Aml
+= 4;
835 /* Fill in bytelist data */
837 ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState
);
838 Arg
->Named
.Value
.Size
= BufferLength
;
839 Arg
->Named
.Data
= ParserState
->Aml
;
842 /* Skip to End of byte data */
844 ParserState
->Aml
= PkgEnd
;
848 Arg
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, Aml
);
851 AcpiPsFreeOp (Field
);
855 /* Get the Namestring argument */
857 Arg
->Common
.Value
.Name
= AcpiPsGetNextNamestring (ParserState
);
860 /* Link the buffer/namestring to parent (CONNECTION_OP) */
862 AcpiPsAppendArg (Field
, Arg
);
868 /* Opcode was set in previous switch */
876 /*******************************************************************************
878 * FUNCTION: AcpiPsGetNextArg
880 * PARAMETERS: WalkState - Current state
881 * ParserState - Current parser state object
882 * ArgType - The argument type (AML_*_ARG)
883 * ReturnArg - Where the next arg is returned
885 * RETURN: Status, and an op object containing the next argument.
887 * DESCRIPTION: Get next argument (including complex list arguments that require
888 * pushing the parser stack)
890 ******************************************************************************/
894 ACPI_WALK_STATE
*WalkState
,
895 ACPI_PARSE_STATE
*ParserState
,
897 ACPI_PARSE_OBJECT
**ReturnArg
)
899 ACPI_PARSE_OBJECT
*Arg
= NULL
;
900 ACPI_PARSE_OBJECT
*Prev
= NULL
;
901 ACPI_PARSE_OBJECT
*Field
;
903 ACPI_STATUS Status
= AE_OK
;
906 ACPI_FUNCTION_TRACE_PTR (PsGetNextArg
, ParserState
);
909 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
910 "Expected argument type ARGP: %s (%2.2X)\n",
911 AcpiUtGetArgumentTypeName (ArgType
), ArgType
));
920 case ARGP_NAMESTRING
:
922 /* Constants, strings, and namestrings are all the same size */
924 Arg
= AcpiPsAllocOp (AML_BYTE_OP
, ParserState
->Aml
);
927 return_ACPI_STATUS (AE_NO_MEMORY
);
930 AcpiPsGetNextSimpleArg (ParserState
, ArgType
, Arg
);
935 /* Package length, nothing returned */
937 ParserState
->PkgEnd
= AcpiPsGetNextPackageEnd (ParserState
);
942 if (ParserState
->Aml
< ParserState
->PkgEnd
)
946 while (ParserState
->Aml
< ParserState
->PkgEnd
)
948 Field
= AcpiPsGetNextField (ParserState
);
951 return_ACPI_STATUS (AE_NO_MEMORY
);
956 Prev
->Common
.Next
= Field
;
965 /* Skip to End of byte data */
967 ParserState
->Aml
= ParserState
->PkgEnd
;
973 if (ParserState
->Aml
< ParserState
->PkgEnd
)
977 Arg
= AcpiPsAllocOp (AML_INT_BYTELIST_OP
,
981 return_ACPI_STATUS (AE_NO_MEMORY
);
984 /* Fill in bytelist data */
986 Arg
->Common
.Value
.Size
= (UINT32
)
987 ACPI_PTR_DIFF (ParserState
->PkgEnd
, ParserState
->Aml
);
988 Arg
->Named
.Data
= ParserState
->Aml
;
990 /* Skip to End of byte data */
992 ParserState
->Aml
= ParserState
->PkgEnd
;
996 case ARGP_SIMPLENAME
:
997 case ARGP_NAME_OR_REF
:
999 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
1000 "**** SimpleName/NameOrRef: %s (%2.2X)\n",
1001 AcpiUtGetArgumentTypeName (ArgType
), ArgType
));
1003 Subop
= AcpiPsPeekOpcode (ParserState
);
1005 AcpiPsIsLeadingChar (Subop
) ||
1006 ACPI_IS_ROOT_PREFIX (Subop
) ||
1007 ACPI_IS_PARENT_PREFIX (Subop
))
1009 /* NullName or NameString */
1011 Arg
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, ParserState
->Aml
);
1014 return_ACPI_STATUS (AE_NO_MEMORY
);
1017 Status
= AcpiPsGetNextNamepath (WalkState
, ParserState
,
1018 Arg
, ACPI_NOT_METHOD_CALL
);
1022 /* Single complex argument, nothing returned */
1024 WalkState
->ArgCount
= 1;
1029 case ARGP_SUPERNAME
:
1031 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
1032 "**** Target/Supername: %s (%2.2X)\n",
1033 AcpiUtGetArgumentTypeName (ArgType
), ArgType
));
1035 Subop
= AcpiPsPeekOpcode (ParserState
);
1037 AcpiPsIsLeadingChar (Subop
) ||
1038 ACPI_IS_ROOT_PREFIX (Subop
) ||
1039 ACPI_IS_PARENT_PREFIX (Subop
))
1041 /* NULL target (zero). Convert to a NULL namepath */
1043 Arg
= AcpiPsAllocOp (AML_INT_NAMEPATH_OP
, ParserState
->Aml
);
1046 return_ACPI_STATUS (AE_NO_MEMORY
);
1049 Status
= AcpiPsGetNextNamepath (WalkState
, ParserState
,
1050 Arg
, ACPI_POSSIBLE_METHOD_CALL
);
1052 if (Arg
->Common
.AmlOpcode
== AML_INT_METHODCALL_OP
)
1054 /* Free method call op and corresponding namestring sub-ob */
1056 AcpiPsFreeOp (Arg
->Common
.Value
.Arg
);
1059 WalkState
->ArgCount
= 1;
1064 /* Single complex argument, nothing returned */
1066 WalkState
->ArgCount
= 1;
1073 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
1074 "**** TermArg/DataObj: %s (%2.2X)\n",
1075 AcpiUtGetArgumentTypeName (ArgType
), ArgType
));
1077 /* Single complex argument, nothing returned */
1079 WalkState
->ArgCount
= 1;
1082 case ARGP_DATAOBJLIST
:
1086 if (ParserState
->Aml
< ParserState
->PkgEnd
)
1088 /* Non-empty list of variable arguments, nothing returned */
1090 WalkState
->ArgCount
= ACPI_VAR_ARGS
;
1096 ACPI_ERROR ((AE_INFO
, "Invalid ArgType: 0x%X", ArgType
));
1097 Status
= AE_AML_OPERAND_TYPE
;
1102 return_ACPI_STATUS (Status
);