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- /******************************************************************************
- *
- * Module Name: psargs - Parse AML opcode arguments
- *
- *****************************************************************************/
- /*
- * Copyright (C) 2000 - 2019, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
- #include "acpi.h"
- #include "accommon.h"
- #include "acparser.h"
- #include "amlcode.h"
- #include "acnamesp.h"
- #include "acdispat.h"
- #include "acconvert.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;
- UINT32 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 += ((ACPI_SIZE) 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 (ACPI_IS_ROOT_PREFIX (*End) ||
- ACPI_IS_PARENT_PREFIX (*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_NAMESEG_SIZE);
- break;
- case AML_MULTI_NAME_PREFIX:
- /* Multiple name segments, 4 chars each, count in next byte */
- End += 2 + (*(End + 1) * ACPI_NAMESEG_SIZE);
- break;
- default:
- /* Single name segment */
- End += ACPI_NAMESEG_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)
- {
- ACPI_STATUS Status;
- char *Path;
- ACPI_PARSE_OBJECT *NameOp;
- ACPI_OPERAND_OBJECT *MethodDesc;
- ACPI_NAMESPACE_NODE *Node;
- UINT8 *Start = ParserState->Aml;
- 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);
- }
- /*
- * Lookup the name in the internal namespace, starting with the current
- * scope. 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 (WalkState->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))
- {
- if ((GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) == ARGP_SUPERNAME) ||
- (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) == ARGP_TARGET))
- {
- /*
- * AcpiPsGetNextNamestring has increased the AML pointer past
- * the method invocation namestring, so we need to restore the
- * saved AML pointer back to the original method invocation
- * namestring.
- */
- WalkState->ParserState.Aml = Start;
- WalkState->ArgCount = 1;
- AcpiPsInitOp (Arg, AML_INT_METHODCALL_OP);
- }
- /* This name is actually a control method invocation */
- MethodDesc = AcpiNsGetAttachedObject (Node);
- ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
- "Control Method invocation %4.4s - %p Desc %p Path=%p\n",
- Node->Name.Ascii, Node, MethodDesc, Path));
- NameOp = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, Start);
- 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_CONDITIONAL_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_VARIABLE_PACKAGE_OP)))
- {
- Status = AE_OK;
- }
- }
- /* Final exception check (may have been changed from code above) */
- if (ACPI_FAILURE (Status))
- {
- ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 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 = (UINT64) *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 0x%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)
- {
- UINT8 *Aml;
- ACPI_PARSE_OBJECT *Field;
- ACPI_PARSE_OBJECT *Arg = NULL;
- UINT16 Opcode;
- UINT32 Name;
- UINT8 AccessType;
- UINT8 AccessAttribute;
- UINT8 AccessLength;
- UINT32 PkgLength;
- UINT8 *PkgEnd;
- UINT32 BufferLength;
- ACPI_FUNCTION_TRACE (PsGetNextField);
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- Aml = ParserState->Aml;
- /* Determine field type */
- switch (ACPI_GET8 (ParserState->Aml))
- {
- case AML_FIELD_OFFSET_OP:
- Opcode = AML_INT_RESERVEDFIELD_OP;
- ParserState->Aml++;
- break;
- case AML_FIELD_ACCESS_OP:
- Opcode = AML_INT_ACCESSFIELD_OP;
- ParserState->Aml++;
- break;
- case AML_FIELD_CONNECTION_OP:
- Opcode = AML_INT_CONNECTION_OP;
- ParserState->Aml++;
- break;
- case AML_FIELD_EXT_ACCESS_OP:
- Opcode = AML_INT_EXTACCESSFIELD_OP;
- ParserState->Aml++;
- break;
- default:
- Opcode = AML_INT_NAMEDFIELD_OP;
- break;
- }
- /* Allocate a new field op */
- Field = AcpiPsAllocOp (Opcode, Aml);
- if (!Field)
- {
- return_PTR (NULL);
- }
- /* Decode the field type */
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- 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_NAMESEG_SIZE;
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- #ifdef ACPI_ASL_COMPILER
- /*
- * Because the package length isn't represented as a parse tree object,
- * take comments surrounding this and add to the previously created
- * parse node.
- */
- if (Field->Common.InlineComment)
- {
- Field->Common.NameComment = Field->Common.InlineComment;
- }
- Field->Common.InlineComment = AcpiGbl_CurrentInlineComment;
- AcpiGbl_CurrentInlineComment = NULL;
- #endif
- /* 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:
- case AML_INT_EXTACCESSFIELD_OP:
- /*
- * Get AccessType and AccessAttrib and merge into the field Op
- * AccessType is first operand, AccessAttribute is second. stuff
- * these bytes into the node integer value for convenience.
- */
- /* Get the two bytes (Type/Attribute) */
- AccessType = ACPI_GET8 (ParserState->Aml);
- ParserState->Aml++;
- AccessAttribute = ACPI_GET8 (ParserState->Aml);
- ParserState->Aml++;
- Field->Common.Value.Integer = (UINT8) AccessType;
- Field->Common.Value.Integer |= (UINT16) (AccessAttribute << 8);
- /* This opcode has a third byte, AccessLength */
- if (Opcode == AML_INT_EXTACCESSFIELD_OP)
- {
- AccessLength = ACPI_GET8 (ParserState->Aml);
- ParserState->Aml++;
- Field->Common.Value.Integer |= (UINT32) (AccessLength << 16);
- }
- break;
- case AML_INT_CONNECTION_OP:
- /*
- * Argument for Connection operator can be either a Buffer
- * (resource descriptor), or a NameString.
- */
- Aml = ParserState->Aml;
- if (ACPI_GET8 (ParserState->Aml) == AML_BUFFER_OP)
- {
- ParserState->Aml++;
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- PkgEnd = ParserState->Aml;
- PkgLength = AcpiPsGetNextPackageLength (ParserState);
- PkgEnd += PkgLength;
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- if (ParserState->Aml < PkgEnd)
- {
- /* Non-empty list */
- Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP, Aml);
- if (!Arg)
- {
- AcpiPsFreeOp (Field);
- return_PTR (NULL);
- }
- /* Get the actual buffer length argument */
- Opcode = ACPI_GET8 (ParserState->Aml);
- ParserState->Aml++;
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- switch (Opcode)
- {
- case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
- BufferLength = ACPI_GET8 (ParserState->Aml);
- ParserState->Aml += 1;
- break;
- case AML_WORD_OP: /* AML_WORDDATA_ARG */
- BufferLength = ACPI_GET16 (ParserState->Aml);
- ParserState->Aml += 2;
- break;
- case AML_DWORD_OP: /* AML_DWORDATA_ARG */
- BufferLength = ACPI_GET32 (ParserState->Aml);
- ParserState->Aml += 4;
- break;
- default:
- BufferLength = 0;
- break;
- }
- /* Fill in bytelist data */
- ASL_CV_CAPTURE_COMMENTS_ONLY (ParserState);
- Arg->Named.Value.Size = BufferLength;
- Arg->Named.Data = ParserState->Aml;
- }
- /* Skip to End of byte data */
- ParserState->Aml = PkgEnd;
- }
- else
- {
- Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, Aml);
- if (!Arg)
- {
- AcpiPsFreeOp (Field);
- return_PTR (NULL);
- }
- /* Get the Namestring argument */
- Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState);
- }
- /* Link the buffer/namestring to parent (CONNECTION_OP) */
- AcpiPsAppendArg (Field, Arg);
- 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);
- ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
- "Expected argument type ARGP: %s (%2.2X)\n",
- AcpiUtGetArgumentTypeName (ArgType), ArgType));
- 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, ParserState->Aml);
- 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,
- ParserState->Aml);
- 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_SIMPLENAME:
- case ARGP_NAME_OR_REF:
- ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
- "**** SimpleName/NameOrRef: %s (%2.2X)\n",
- AcpiUtGetArgumentTypeName (ArgType), ArgType));
- Subop = AcpiPsPeekOpcode (ParserState);
- if (Subop == 0 ||
- AcpiPsIsLeadingChar (Subop) ||
- ACPI_IS_ROOT_PREFIX (Subop) ||
- ACPI_IS_PARENT_PREFIX (Subop))
- {
- /* NullName or NameString */
- Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, ParserState->Aml);
- if (!Arg)
- {
- return_ACPI_STATUS (AE_NO_MEMORY);
- }
- Status = AcpiPsGetNextNamepath (WalkState, ParserState,
- Arg, ACPI_NOT_METHOD_CALL);
- }
- else
- {
- /* Single complex argument, nothing returned */
- WalkState->ArgCount = 1;
- }
- break;
- case ARGP_TARGET:
- case ARGP_SUPERNAME:
- ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
- "**** Target/Supername: %s (%2.2X)\n",
- AcpiUtGetArgumentTypeName (ArgType), ArgType));
- Subop = AcpiPsPeekOpcode (ParserState);
- if (Subop == 0 ||
- AcpiPsIsLeadingChar (Subop) ||
- ACPI_IS_ROOT_PREFIX (Subop) ||
- ACPI_IS_PARENT_PREFIX (Subop))
- {
- /* NULL target (zero). Convert to a NULL namepath */
- Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, ParserState->Aml);
- if (!Arg)
- {
- return_ACPI_STATUS (AE_NO_MEMORY);
- }
- Status = AcpiPsGetNextNamepath (WalkState, ParserState,
- Arg, ACPI_POSSIBLE_METHOD_CALL);
- if (Arg->Common.AmlOpcode == AML_INT_METHODCALL_OP)
- {
- /* Free method call op and corresponding namestring sub-ob */
- AcpiPsFreeOp (Arg->Common.Value.Arg);
- AcpiPsFreeOp (Arg);
- Arg = NULL;
- WalkState->ArgCount = 1;
- }
- }
- else
- {
- /* Single complex argument, nothing returned */
- WalkState->ArgCount = 1;
- }
- break;
- case ARGP_DATAOBJ:
- case ARGP_TERMARG:
- ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
- "**** TermArg/DataObj: %s (%2.2X)\n",
- AcpiUtGetArgumentTypeName (ArgType), ArgType));
- /* 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: 0x%X", ArgType));
- Status = AE_AML_OPERAND_TYPE;
- break;
- }
- *ReturnArg = Arg;
- return_ACPI_STATUS (Status);
- }
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