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Diffstat (limited to 'sys/contrib/dev/acpica/psargs.c')
| -rw-r--r-- | sys/contrib/dev/acpica/psargs.c | 869 |
1 files changed, 869 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/psargs.c b/sys/contrib/dev/acpica/psargs.c new file mode 100644 index 0000000..3c39919 --- /dev/null +++ b/sys/contrib/dev/acpica/psargs.c @@ -0,0 +1,869 @@ +/****************************************************************************** + * + * Module Name: psargs - Parse AML opcode arguments + * $Revision: 1.92 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. + * All rights reserved. + * + * 2. License + * + * 2.1. This is your license from Intel Corp. under its intellectual property + * rights. You may have additional license terms from the party that provided + * you this software, covering your right to use that party's intellectual + * property rights. + * + * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a + * copy of the source code appearing in this file ("Covered Code") an + * irrevocable, perpetual, worldwide license under Intel's copyrights in the + * base code distributed originally by Intel ("Original Intel Code") to copy, + * make derivatives, distribute, use and display any portion of the Covered + * Code in any form, with the right to sublicense such rights; and + * + * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent + * license (with the right to sublicense), under only those claims of Intel + * patents that are infringed by the Original Intel Code, to make, use, sell, + * offer to sell, and import the Covered Code and derivative works thereof + * solely to the minimum extent necessary to exercise the above copyright + * license, and in no event shall the patent license extend to any additions + * to or modifications of the Original Intel Code. No other license or right + * is granted directly or by implication, estoppel or otherwise; + * + * The above copyright and patent license is granted only if the following + * conditions are met: + * + * 3. Conditions + * + * 3.1. Redistribution of Source with Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification with rights to further distribute source must include + * the above Copyright Notice, the above License, this list of Conditions, + * and the following Disclaimer and Export Compliance provision. In addition, + * Licensee must cause all Covered Code to which Licensee contributes to + * contain a file documenting the changes Licensee made to create that Covered + * Code and the date of any change. Licensee must include in that file the + * documentation of any changes made by any predecessor Licensee. Licensee + * must include a prominent statement that the modification is derived, + * directly or indirectly, from Original Intel Code. + * + * 3.2. Redistribution of Source with no Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification without rights to further distribute source must + * include the following Disclaimer and Export Compliance provision in the + * documentation and/or other materials provided with distribution. In + * addition, Licensee may not authorize further sublicense of source of any + * portion of the Covered Code, and must include terms to the effect that the + * license from Licensee to its licensee is limited to the intellectual + * property embodied in the software Licensee provides to its licensee, and + * not to intellectual property embodied in modifications its licensee may + * make. + * + * 3.3. Redistribution of Executable. Redistribution in executable form of any + * substantial portion of the Covered Code or modification must reproduce the + * above Copyright Notice, and the following Disclaimer and Export Compliance + * provision in the documentation and/or other materials provided with the + * distribution. + * + * 3.4. Intel retains all right, title, and interest in and to the Original + * Intel Code. + * + * 3.5. Neither the name Intel nor any other trademark owned or controlled by + * Intel shall be used in advertising or otherwise to promote the sale, use or + * other dealings in products derived from or relating to the Covered Code + * without prior written authorization from Intel. + * + * 4. Disclaimer and Export Compliance + * + * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED + * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE + * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, + * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY + * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY + * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A + * PARTICULAR PURPOSE. + * + * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES + * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR + * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, + * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY + * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL + * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS + * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY + * LIMITED REMEDY. + * + * 4.3. Licensee shall not export, either directly or indirectly, any of this + * software or system incorporating such software without first obtaining any + * required license or other approval from the U. S. Department of Commerce or + * any other agency or department of the United States Government. In the + * event Licensee exports any such software from the United States or + * re-exports any such software from a foreign destination, Licensee shall + * ensure that the distribution and export/re-export of the software is in + * compliance with all laws, regulations, orders, or other restrictions of the + * U.S. Export Administration Regulations. Licensee agrees that neither it nor + * any of its subsidiaries will export/re-export any technical data, process, + * software, or service, directly or indirectly, to any country for which the + * United States government or any agency thereof requires an export license, + * other governmental approval, or letter of assurance, without first obtaining + * such license, approval or letter. + * + *****************************************************************************/ + +#define __PSARGS_C__ + +#include <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/acparser.h> +#include <contrib/dev/acpica/amlcode.h> +#include <contrib/dev/acpica/acnamesp.h> +#include <contrib/dev/acpica/acdispat.h> + +#define _COMPONENT ACPI_PARSER + ACPI_MODULE_NAME ("psargs") + +/* Local prototypes */ + +static UINT32 +AcpiPsGetNextPackageLength ( + ACPI_PARSE_STATE *ParserState); + +static ACPI_PARSE_OBJECT * +AcpiPsGetNextField ( + ACPI_PARSE_STATE *ParserState); + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextPackageLength + * + * PARAMETERS: ParserState - Current parser state object + * + * RETURN: Decoded package length. On completion, the AML pointer points + * past the length byte or bytes. + * + * DESCRIPTION: Decode and return a package length field. + * Note: Largest package length is 28 bits, from ACPI specification + * + ******************************************************************************/ + +static UINT32 +AcpiPsGetNextPackageLength ( + ACPI_PARSE_STATE *ParserState) +{ + UINT8 *Aml = ParserState->Aml; + UINT32 PackageLength = 0; + ACPI_NATIVE_UINT ByteCount; + UINT8 ByteZeroMask = 0x3F; /* Default [0:5] */ + + + ACPI_FUNCTION_TRACE (PsGetNextPackageLength); + + + /* + * Byte 0 bits [6:7] contain the number of additional bytes + * used to encode the package length, either 0,1,2, or 3 + */ + ByteCount = (Aml[0] >> 6); + ParserState->Aml += (ByteCount + 1); + + /* Get bytes 3, 2, 1 as needed */ + + while (ByteCount) + { + /* + * Final bit positions for the package length bytes: + * Byte3->[20:27] + * Byte2->[12:19] + * Byte1->[04:11] + * Byte0->[00:03] + */ + PackageLength |= (Aml[ByteCount] << ((ByteCount << 3) - 4)); + + ByteZeroMask = 0x0F; /* Use bits [0:3] of byte 0 */ + ByteCount--; + } + + /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */ + + PackageLength |= (Aml[0] & ByteZeroMask); + return_UINT32 (PackageLength); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextPackageEnd + * + * PARAMETERS: ParserState - Current parser state object + * + * RETURN: Pointer to end-of-package +1 + * + * DESCRIPTION: Get next package length and return a pointer past the end of + * the package. Consumes the package length field + * + ******************************************************************************/ + +UINT8 * +AcpiPsGetNextPackageEnd ( + ACPI_PARSE_STATE *ParserState) +{ + UINT8 *Start = ParserState->Aml; + UINT32 PackageLength; + + + ACPI_FUNCTION_TRACE (PsGetNextPackageEnd); + + + /* Function below updates ParserState->Aml */ + + PackageLength = AcpiPsGetNextPackageLength (ParserState); + + return_PTR (Start + PackageLength); /* end of package */ +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextNamestring + * + * PARAMETERS: ParserState - Current parser state object + * + * RETURN: Pointer to the start of the name string (pointer points into + * the AML. + * + * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name + * prefix characters. Set parser state to point past the string. + * (Name is consumed from the AML.) + * + ******************************************************************************/ + +char * +AcpiPsGetNextNamestring ( + ACPI_PARSE_STATE *ParserState) +{ + UINT8 *Start = ParserState->Aml; + UINT8 *End = ParserState->Aml; + + + ACPI_FUNCTION_TRACE (PsGetNextNamestring); + + + /* Point past any namestring prefix characters (backslash or carat) */ + + while (AcpiPsIsPrefixChar (*End)) + { + End++; + } + + /* Decode the path prefix character */ + + switch (*End) + { + case 0: + + /* NullName */ + + if (End == Start) + { + Start = NULL; + } + End++; + break; + + case AML_DUAL_NAME_PREFIX: + + /* Two name segments */ + + End += 1 + (2 * ACPI_NAME_SIZE); + break; + + case AML_MULTI_NAME_PREFIX_OP: + + /* Multiple name segments, 4 chars each, count in next byte */ + + End += 2 + (*(End + 1) * ACPI_NAME_SIZE); + break; + + default: + + /* Single name segment */ + + End += ACPI_NAME_SIZE; + break; + } + + ParserState->Aml = End; + return_PTR ((char *) Start); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextNamepath + * + * PARAMETERS: ParserState - Current parser state object + * Arg - Where the namepath will be stored + * ArgCount - If the namepath points to a control method + * the method's argument is returned here. + * PossibleMethodCall - Whether the namepath can possibly be the + * start of a method call + * + * RETURN: Status + * + * DESCRIPTION: Get next name (if method call, return # of required args). + * Names are looked up in the internal namespace to determine + * if the name represents a control method. If a method + * is found, the number of arguments to the method is returned. + * This information is critical for parsing to continue correctly. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiPsGetNextNamepath ( + ACPI_WALK_STATE *WalkState, + ACPI_PARSE_STATE *ParserState, + ACPI_PARSE_OBJECT *Arg, + BOOLEAN PossibleMethodCall) +{ + char *Path; + ACPI_PARSE_OBJECT *NameOp; + ACPI_STATUS Status; + ACPI_OPERAND_OBJECT *MethodDesc; + ACPI_NAMESPACE_NODE *Node; + ACPI_GENERIC_STATE ScopeInfo; + + + ACPI_FUNCTION_TRACE (PsGetNextNamepath); + + + Path = AcpiPsGetNextNamestring (ParserState); + AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP); + + /* Null path case is allowed, just exit */ + + if (!Path) + { + Arg->Common.Value.Name = Path; + return_ACPI_STATUS (AE_OK); + } + + /* Setup search scope info */ + + ScopeInfo.Scope.Node = NULL; + Node = ParserState->StartNode; + if (Node) + { + ScopeInfo.Scope.Node = Node; + } + + /* + * Lookup the name in the internal namespace. We don't want to add + * anything new to the namespace here, however, so we use MODE_EXECUTE. + * Allow searching of the parent tree, but don't open a new scope - + * we just want to lookup the object (must be mode EXECUTE to perform + * the upsearch) + */ + Status = AcpiNsLookup (&ScopeInfo, Path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node); + + /* + * If this name is a control method invocation, we must + * setup the method call + */ + if (ACPI_SUCCESS (Status) && + PossibleMethodCall && + (Node->Type == ACPI_TYPE_METHOD)) + { + /* This name is actually a control method invocation */ + + MethodDesc = AcpiNsGetAttachedObject (Node); + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, + "Control Method - %p Desc %p Path=%p\n", Node, MethodDesc, Path)); + + NameOp = AcpiPsAllocOp (AML_INT_NAMEPATH_OP); + if (!NameOp) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Change Arg into a METHOD CALL and attach name to it */ + + AcpiPsInitOp (Arg, AML_INT_METHODCALL_OP); + NameOp->Common.Value.Name = Path; + + /* Point METHODCALL/NAME to the METHOD Node */ + + NameOp->Common.Node = Node; + AcpiPsAppendArg (Arg, NameOp); + + if (!MethodDesc) + { + ACPI_ERROR ((AE_INFO, + "Control Method %p has no attached object", + Node)); + return_ACPI_STATUS (AE_AML_INTERNAL); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, + "Control Method - %p Args %X\n", + Node, MethodDesc->Method.ParamCount)); + + /* Get the number of arguments to expect */ + + WalkState->ArgCount = MethodDesc->Method.ParamCount; + return_ACPI_STATUS (AE_OK); + } + + /* + * Special handling if the name was not found during the lookup - + * some NotFound cases are allowed + */ + if (Status == AE_NOT_FOUND) + { + /* 1) NotFound is ok during load pass 1/2 (allow forward references) */ + + if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) != + ACPI_PARSE_EXECUTE) + { + Status = AE_OK; + } + + /* 2) NotFound during a CondRefOf(x) is ok by definition */ + + else if (WalkState->Op->Common.AmlOpcode == AML_COND_REF_OF_OP) + { + Status = AE_OK; + } + + /* + * 3) NotFound while building a Package is ok at this point, we + * may flag as an error later if slack mode is not enabled. + * (Some ASL code depends on allowing this behavior) + */ + else if ((Arg->Common.Parent) && + ((Arg->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || + (Arg->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))) + { + Status = AE_OK; + } + } + + /* Final exception check (may have been changed from code above) */ + + if (ACPI_FAILURE (Status)) + { + ACPI_ERROR_NAMESPACE (Path, Status); + + if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == + ACPI_PARSE_EXECUTE) + { + /* Report a control method execution error */ + + Status = AcpiDsMethodError (Status, WalkState); + } + } + + /* Save the namepath */ + + Arg->Common.Value.Name = Path; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextSimpleArg + * + * PARAMETERS: ParserState - Current parser state object + * ArgType - The argument type (AML_*_ARG) + * Arg - Where the argument is returned + * + * RETURN: None + * + * DESCRIPTION: Get the next simple argument (constant, string, or namestring) + * + ******************************************************************************/ + +void +AcpiPsGetNextSimpleArg ( + ACPI_PARSE_STATE *ParserState, + UINT32 ArgType, + ACPI_PARSE_OBJECT *Arg) +{ + UINT32 Length; + UINT16 Opcode; + UINT8 *Aml = ParserState->Aml; + + + ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg, ArgType); + + + switch (ArgType) + { + case ARGP_BYTEDATA: + + /* Get 1 byte from the AML stream */ + + Opcode = AML_BYTE_OP; + Arg->Common.Value.Integer = (ACPI_INTEGER) *Aml; + Length = 1; + break; + + + case ARGP_WORDDATA: + + /* Get 2 bytes from the AML stream */ + + Opcode = AML_WORD_OP; + ACPI_MOVE_16_TO_64 (&Arg->Common.Value.Integer, Aml); + Length = 2; + break; + + + case ARGP_DWORDDATA: + + /* Get 4 bytes from the AML stream */ + + Opcode = AML_DWORD_OP; + ACPI_MOVE_32_TO_64 (&Arg->Common.Value.Integer, Aml); + Length = 4; + break; + + + case ARGP_QWORDDATA: + + /* Get 8 bytes from the AML stream */ + + Opcode = AML_QWORD_OP; + ACPI_MOVE_64_TO_64 (&Arg->Common.Value.Integer, Aml); + Length = 8; + break; + + + case ARGP_CHARLIST: + + /* Get a pointer to the string, point past the string */ + + Opcode = AML_STRING_OP; + Arg->Common.Value.String = ACPI_CAST_PTR (char, Aml); + + /* Find the null terminator */ + + Length = 0; + while (Aml[Length]) + { + Length++; + } + Length++; + break; + + + case ARGP_NAME: + case ARGP_NAMESTRING: + + AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP); + Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState); + return_VOID; + + + default: + + ACPI_ERROR ((AE_INFO, "Invalid ArgType %X", ArgType)); + return_VOID; + } + + AcpiPsInitOp (Arg, Opcode); + ParserState->Aml += Length; + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextField + * + * PARAMETERS: ParserState - Current parser state object + * + * RETURN: A newly allocated FIELD op + * + * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField) + * + ******************************************************************************/ + +static ACPI_PARSE_OBJECT * +AcpiPsGetNextField ( + ACPI_PARSE_STATE *ParserState) +{ + UINT32 AmlOffset = (UINT32) + ACPI_PTR_DIFF (ParserState->Aml, + ParserState->AmlStart); + ACPI_PARSE_OBJECT *Field; + UINT16 Opcode; + UINT32 Name; + + + ACPI_FUNCTION_TRACE (PsGetNextField); + + + /* Determine field type */ + + switch (ACPI_GET8 (ParserState->Aml)) + { + default: + + Opcode = AML_INT_NAMEDFIELD_OP; + break; + + case 0x00: + + Opcode = AML_INT_RESERVEDFIELD_OP; + ParserState->Aml++; + break; + + case 0x01: + + Opcode = AML_INT_ACCESSFIELD_OP; + ParserState->Aml++; + break; + } + + /* Allocate a new field op */ + + Field = AcpiPsAllocOp (Opcode); + if (!Field) + { + return_PTR (NULL); + } + + Field->Common.AmlOffset = AmlOffset; + + /* Decode the field type */ + + switch (Opcode) + { + case AML_INT_NAMEDFIELD_OP: + + /* Get the 4-character name */ + + ACPI_MOVE_32_TO_32 (&Name, ParserState->Aml); + AcpiPsSetName (Field, Name); + ParserState->Aml += ACPI_NAME_SIZE; + + /* Get the length which is encoded as a package length */ + + Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState); + break; + + + case AML_INT_RESERVEDFIELD_OP: + + /* Get the length which is encoded as a package length */ + + Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState); + break; + + + case AML_INT_ACCESSFIELD_OP: + + /* + * Get AccessType and AccessAttrib and merge into the field Op + * AccessType is first operand, AccessAttribute is second + */ + Field->Common.Value.Integer = (((UINT32) ACPI_GET8 (ParserState->Aml) << 8)); + ParserState->Aml++; + Field->Common.Value.Integer |= ACPI_GET8 (ParserState->Aml); + ParserState->Aml++; + break; + + default: + + /* Opcode was set in previous switch */ + break; + } + + return_PTR (Field); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsGetNextArg + * + * PARAMETERS: WalkState - Current state + * ParserState - Current parser state object + * ArgType - The argument type (AML_*_ARG) + * ReturnArg - Where the next arg is returned + * + * RETURN: Status, and an op object containing the next argument. + * + * DESCRIPTION: Get next argument (including complex list arguments that require + * pushing the parser stack) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiPsGetNextArg ( + ACPI_WALK_STATE *WalkState, + ACPI_PARSE_STATE *ParserState, + UINT32 ArgType, + ACPI_PARSE_OBJECT **ReturnArg) +{ + ACPI_PARSE_OBJECT *Arg = NULL; + ACPI_PARSE_OBJECT *Prev = NULL; + ACPI_PARSE_OBJECT *Field; + UINT32 Subop; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE_PTR (PsGetNextArg, ParserState); + + + switch (ArgType) + { + case ARGP_BYTEDATA: + case ARGP_WORDDATA: + case ARGP_DWORDDATA: + case ARGP_CHARLIST: + case ARGP_NAME: + case ARGP_NAMESTRING: + + /* Constants, strings, and namestrings are all the same size */ + + Arg = AcpiPsAllocOp (AML_BYTE_OP); + if (!Arg) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + AcpiPsGetNextSimpleArg (ParserState, ArgType, Arg); + break; + + + case ARGP_PKGLENGTH: + + /* Package length, nothing returned */ + + ParserState->PkgEnd = AcpiPsGetNextPackageEnd (ParserState); + break; + + + case ARGP_FIELDLIST: + + if (ParserState->Aml < ParserState->PkgEnd) + { + /* Non-empty list */ + + while (ParserState->Aml < ParserState->PkgEnd) + { + Field = AcpiPsGetNextField (ParserState); + if (!Field) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + if (Prev) + { + Prev->Common.Next = Field; + } + else + { + Arg = Field; + } + Prev = Field; + } + + /* Skip to End of byte data */ + + ParserState->Aml = ParserState->PkgEnd; + } + break; + + + case ARGP_BYTELIST: + + if (ParserState->Aml < ParserState->PkgEnd) + { + /* Non-empty list */ + + Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP); + if (!Arg) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Fill in bytelist data */ + + Arg->Common.Value.Size = (UINT32) + ACPI_PTR_DIFF (ParserState->PkgEnd, ParserState->Aml); + Arg->Named.Data = ParserState->Aml; + + /* Skip to End of byte data */ + + ParserState->Aml = ParserState->PkgEnd; + } + break; + + + case ARGP_TARGET: + case ARGP_SUPERNAME: + case ARGP_SIMPLENAME: + + Subop = AcpiPsPeekOpcode (ParserState); + if (Subop == 0 || + AcpiPsIsLeadingChar (Subop) || + AcpiPsIsPrefixChar (Subop)) + { + /* NullName or NameString */ + + Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP); + if (!Arg) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + Status = AcpiPsGetNextNamepath (WalkState, ParserState, Arg, 0); + } + else + { + /* Single complex argument, nothing returned */ + + WalkState->ArgCount = 1; + } + break; + + + case ARGP_DATAOBJ: + case ARGP_TERMARG: + + /* Single complex argument, nothing returned */ + + WalkState->ArgCount = 1; + break; + + + case ARGP_DATAOBJLIST: + case ARGP_TERMLIST: + case ARGP_OBJLIST: + + if (ParserState->Aml < ParserState->PkgEnd) + { + /* Non-empty list of variable arguments, nothing returned */ + + WalkState->ArgCount = ACPI_VAR_ARGS; + } + break; + + + default: + + ACPI_ERROR ((AE_INFO, "Invalid ArgType: %X", ArgType)); + Status = AE_AML_OPERAND_TYPE; + break; + } + + *ReturnArg = Arg; + return_ACPI_STATUS (Status); +} |
