third_party/lib/acpica/source/components/dispatcher/dsargs.c - zircon/ - Git at Google

 /******************************************************************************
  *
  * Module Name: dsargs - Support for execution of dynamic arguments for static
  *                       objects (regions, fields, buffer fields, etc.)
  *
  *****************************************************************************/

 /*
  * Copyright (C) 2000 - 2016, 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 "acdispat.h"
 #include "acnamesp.h"

 #define _COMPONENT          ACPI_DISPATCHER
         ACPI_MODULE_NAME    ("dsargs")

 /* Local prototypes */

 static ACPI_STATUS
 AcpiDsExecuteArguments (
     ACPI_NAMESPACE_NODE     *Node,
     ACPI_NAMESPACE_NODE     *ScopeNode,
     UINT32                  AmlLength,
     UINT8                   *AmlStart);


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsExecuteArguments
  *
  * PARAMETERS:  Node                - Object NS node
  *              ScopeNode           - Parent NS node
  *              AmlLength           - Length of executable AML
  *              AmlStart            - Pointer to the AML
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Late (deferred) execution of region or field arguments
  *
  ******************************************************************************/

 static ACPI_STATUS
 AcpiDsExecuteArguments (
     ACPI_NAMESPACE_NODE     *Node,
     ACPI_NAMESPACE_NODE     *ScopeNode,
     UINT32                  AmlLength,
     UINT8                   *AmlStart)
 {
     ACPI_STATUS             Status;
     ACPI_PARSE_OBJECT       *Op;
     ACPI_WALK_STATE         *WalkState;


     ACPI_FUNCTION_TRACE (DsExecuteArguments);


     /* Allocate a new parser op to be the root of the parsed tree */

     Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
     if (!Op)
     {
         return_ACPI_STATUS (AE_NO_MEMORY);
     }

     /* Save the Node for use in AcpiPsParseAml */

     Op->Common.Node = ScopeNode;

     /* Create and initialize a new parser state */

     WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
     if (!WalkState)
     {
         Status = AE_NO_MEMORY;
         goto Cleanup;
     }

     Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
         AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
     if (ACPI_FAILURE (Status))
     {
         AcpiDsDeleteWalkState (WalkState);
         goto Cleanup;
     }

     /* Mark this parse as a deferred opcode */

     WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP;
     WalkState->DeferredNode = Node;

     /* Pass1: Parse the entire declaration */

     Status = AcpiPsParseAml (WalkState);
     if (ACPI_FAILURE (Status))
     {
         goto Cleanup;
     }

     /* Get and init the Op created above */

     Op->Common.Node = Node;
     AcpiPsDeleteParseTree (Op);

     /* Evaluate the deferred arguments */

     Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
     if (!Op)
     {
         return_ACPI_STATUS (AE_NO_MEMORY);
     }

     Op->Common.Node = ScopeNode;

     /* Create and initialize a new parser state */

     WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
     if (!WalkState)
     {
         Status = AE_NO_MEMORY;
         goto Cleanup;
     }

     /* Execute the opcode and arguments */

     Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
         AmlLength, NULL, ACPI_IMODE_EXECUTE);
     if (ACPI_FAILURE (Status))
     {
         AcpiDsDeleteWalkState (WalkState);
         goto Cleanup;
     }

     /* Mark this execution as a deferred opcode */

     WalkState->DeferredNode = Node;
     Status = AcpiPsParseAml (WalkState);

 Cleanup:
     AcpiPsDeleteParseTree (Op);
     return_ACPI_STATUS (Status);
 }


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsGetBufferFieldArguments
  *
  * PARAMETERS:  ObjDesc         - A valid BufferField object
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Get BufferField Buffer and Index. This implements the late
  *              evaluation of these field attributes.
  *
  ******************************************************************************/

 ACPI_STATUS
 AcpiDsGetBufferFieldArguments (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
     ACPI_OPERAND_OBJECT     *ExtraDesc;
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;


     ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc);


     if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
     {
         return_ACPI_STATUS (AE_OK);
     }

     /* Get the AML pointer (method object) and BufferField node */

     ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
     Node = ObjDesc->BufferField.Node;

     ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
         ACPI_TYPE_BUFFER_FIELD, Node, NULL));

     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
         AcpiUtGetNodeName (Node)));

     /* Execute the AML code for the TermArg arguments */

     Status = AcpiDsExecuteArguments (Node, Node->Parent,
         ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
     return_ACPI_STATUS (Status);
 }


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsGetBankFieldArguments
  *
  * PARAMETERS:  ObjDesc         - A valid BankField object
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Get BankField BankValue. This implements the late
  *              evaluation of these field attributes.
  *
  ******************************************************************************/

 ACPI_STATUS
 AcpiDsGetBankFieldArguments (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
     ACPI_OPERAND_OBJECT     *ExtraDesc;
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;


     ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc);


     if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
     {
         return_ACPI_STATUS (AE_OK);
     }

     /* Get the AML pointer (method object) and BankField node */

     ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
     Node = ObjDesc->BankField.Node;

     ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
         ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL));

     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
         AcpiUtGetNodeName (Node)));

     /* Execute the AML code for the TermArg arguments */

     Status = AcpiDsExecuteArguments (Node, Node->Parent,
         ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
     return_ACPI_STATUS (Status);
 }


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsGetBufferArguments
  *
  * PARAMETERS:  ObjDesc         - A valid Buffer object
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Get Buffer length and initializer byte list. This implements
  *              the late evaluation of these attributes.
  *
  ******************************************************************************/

 ACPI_STATUS
 AcpiDsGetBufferArguments (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;


     ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc);


     if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
     {
         return_ACPI_STATUS (AE_OK);
     }

     /* Get the Buffer node */

     Node = ObjDesc->Buffer.Node;
     if (!Node)
     {
         ACPI_ERROR ((AE_INFO,
             "No pointer back to namespace node in buffer object %p",
             ObjDesc));
         return_ACPI_STATUS (AE_AML_INTERNAL);
     }

     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n"));

     /* Execute the AML code for the TermArg arguments */

     Status = AcpiDsExecuteArguments (Node, Node,
         ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart);
     return_ACPI_STATUS (Status);
 }


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsGetPackageArguments
  *
  * PARAMETERS:  ObjDesc         - A valid Package object
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Get Package length and initializer byte list. This implements
  *              the late evaluation of these attributes.
  *
  ******************************************************************************/

 ACPI_STATUS
 AcpiDsGetPackageArguments (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;


     ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc);


     if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
     {
         return_ACPI_STATUS (AE_OK);
     }

     /* Get the Package node */

     Node = ObjDesc->Package.Node;
     if (!Node)
     {
         ACPI_ERROR ((AE_INFO,
             "No pointer back to namespace node in package %p", ObjDesc));
         return_ACPI_STATUS (AE_AML_INTERNAL);
     }

     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n"));

     /* Execute the AML code for the TermArg arguments */

     Status = AcpiDsExecuteArguments (Node, Node,
         ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart);
     return_ACPI_STATUS (Status);
 }


 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsGetRegionArguments
  *
  * PARAMETERS:  ObjDesc         - A valid region object
  *
  * RETURN:      Status.
  *
  * DESCRIPTION: Get region address and length. This implements the late
  *              evaluation of these region attributes.
  *
  ******************************************************************************/

 ACPI_STATUS
 AcpiDsGetRegionArguments (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;
     ACPI_OPERAND_OBJECT     *ExtraDesc;


     ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);


     if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
     {
         return_ACPI_STATUS (AE_OK);
     }

     ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
     if (!ExtraDesc)
     {
         return_ACPI_STATUS (AE_NOT_EXIST);
     }

     /* Get the Region node */

     Node = ObjDesc->Region.Node;

     ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
         ACPI_TYPE_REGION, Node, NULL));

     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
         "[%4.4s] OpRegion Arg Init at AML %p\n",
         AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));

     /* Execute the argument AML */

     Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode,
         ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
     if (ACPI_FAILURE (Status))
     {
         return_ACPI_STATUS (Status);
     }

     Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
         ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
     return_ACPI_STATUS (Status);
 }
	/******************************************************************************
	*
	* Module Name: dsargs - Support for execution of dynamic arguments for static
	* objects (regions, fields, buffer fields, etc.)
	*
	*****************************************************************************/

	/*
	* Copyright (C) 2000 - 2016, 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 "acdispat.h"
	#include "acnamesp.h"

	#define _COMPONENT ACPI_DISPATCHER
	ACPI_MODULE_NAME ("dsargs")

	/* Local prototypes */

	static ACPI_STATUS
	AcpiDsExecuteArguments (
	ACPI_NAMESPACE_NODE *Node,
	ACPI_NAMESPACE_NODE *ScopeNode,
	UINT32 AmlLength,
	UINT8 *AmlStart);


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsExecuteArguments
	*
	* PARAMETERS: Node - Object NS node
	* ScopeNode - Parent NS node
	* AmlLength - Length of executable AML
	* AmlStart - Pointer to the AML
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Late (deferred) execution of region or field arguments
	*
	******************************************************************************/

	static ACPI_STATUS
	AcpiDsExecuteArguments (
	ACPI_NAMESPACE_NODE *Node,
	ACPI_NAMESPACE_NODE *ScopeNode,
	UINT32 AmlLength,
	UINT8 *AmlStart)
	{
	ACPI_STATUS Status;
	ACPI_PARSE_OBJECT *Op;
	ACPI_WALK_STATE *WalkState;


	ACPI_FUNCTION_TRACE (DsExecuteArguments);


	/* Allocate a new parser op to be the root of the parsed tree */

	Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
	if (!Op)
	{
	return_ACPI_STATUS (AE_NO_MEMORY);
	}

	/* Save the Node for use in AcpiPsParseAml */

	Op->Common.Node = ScopeNode;

	/* Create and initialize a new parser state */

	WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
	if (!WalkState)
	{
	Status = AE_NO_MEMORY;
	goto Cleanup;
	}

	Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
	AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
	if (ACPI_FAILURE (Status))
	{
	AcpiDsDeleteWalkState (WalkState);
	goto Cleanup;
	}

	/* Mark this parse as a deferred opcode */

	WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP;
	WalkState->DeferredNode = Node;

	/* Pass1: Parse the entire declaration */

	Status = AcpiPsParseAml (WalkState);
	if (ACPI_FAILURE (Status))
	{
	goto Cleanup;
	}

	/* Get and init the Op created above */

	Op->Common.Node = Node;
	AcpiPsDeleteParseTree (Op);

	/* Evaluate the deferred arguments */

	Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
	if (!Op)
	{
	return_ACPI_STATUS (AE_NO_MEMORY);
	}

	Op->Common.Node = ScopeNode;

	/* Create and initialize a new parser state */

	WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
	if (!WalkState)
	{
	Status = AE_NO_MEMORY;
	goto Cleanup;
	}

	/* Execute the opcode and arguments */

	Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
	AmlLength, NULL, ACPI_IMODE_EXECUTE);
	if (ACPI_FAILURE (Status))
	{
	AcpiDsDeleteWalkState (WalkState);
	goto Cleanup;
	}

	/* Mark this execution as a deferred opcode */

	WalkState->DeferredNode = Node;
	Status = AcpiPsParseAml (WalkState);

	Cleanup:
	AcpiPsDeleteParseTree (Op);
	return_ACPI_STATUS (Status);
	}


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsGetBufferFieldArguments
	*
	* PARAMETERS: ObjDesc - A valid BufferField object
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Get BufferField Buffer and Index. This implements the late
	* evaluation of these field attributes.
	*
	******************************************************************************/

	ACPI_STATUS
	AcpiDsGetBufferFieldArguments (
	ACPI_OPERAND_OBJECT *ObjDesc)
	{
	ACPI_OPERAND_OBJECT *ExtraDesc;
	ACPI_NAMESPACE_NODE *Node;
	ACPI_STATUS Status;


	ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc);


	if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
	{
	return_ACPI_STATUS (AE_OK);
	}

	/* Get the AML pointer (method object) and BufferField node */

	ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
	Node = ObjDesc->BufferField.Node;

	ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
	ACPI_TYPE_BUFFER_FIELD, Node, NULL));

	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
	AcpiUtGetNodeName (Node)));

	/* Execute the AML code for the TermArg arguments */

	Status = AcpiDsExecuteArguments (Node, Node->Parent,
	ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
	return_ACPI_STATUS (Status);
	}


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsGetBankFieldArguments
	*
	* PARAMETERS: ObjDesc - A valid BankField object
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Get BankField BankValue. This implements the late
	* evaluation of these field attributes.
	*
	******************************************************************************/

	ACPI_STATUS
	AcpiDsGetBankFieldArguments (
	ACPI_OPERAND_OBJECT *ObjDesc)
	{
	ACPI_OPERAND_OBJECT *ExtraDesc;
	ACPI_NAMESPACE_NODE *Node;
	ACPI_STATUS Status;


	ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc);


	if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
	{
	return_ACPI_STATUS (AE_OK);
	}

	/* Get the AML pointer (method object) and BankField node */

	ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
	Node = ObjDesc->BankField.Node;

	ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
	ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL));

	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
	AcpiUtGetNodeName (Node)));

	/* Execute the AML code for the TermArg arguments */

	Status = AcpiDsExecuteArguments (Node, Node->Parent,
	ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
	return_ACPI_STATUS (Status);
	}


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsGetBufferArguments
	*
	* PARAMETERS: ObjDesc - A valid Buffer object
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Get Buffer length and initializer byte list. This implements
	* the late evaluation of these attributes.
	*
	******************************************************************************/

	ACPI_STATUS
	AcpiDsGetBufferArguments (
	ACPI_OPERAND_OBJECT *ObjDesc)
	{
	ACPI_NAMESPACE_NODE *Node;
	ACPI_STATUS Status;


	ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc);


	if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
	{
	return_ACPI_STATUS (AE_OK);
	}

	/* Get the Buffer node */

	Node = ObjDesc->Buffer.Node;
	if (!Node)
	{
	ACPI_ERROR ((AE_INFO,
	"No pointer back to namespace node in buffer object %p",
	ObjDesc));
	return_ACPI_STATUS (AE_AML_INTERNAL);
	}

	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n"));

	/* Execute the AML code for the TermArg arguments */

	Status = AcpiDsExecuteArguments (Node, Node,
	ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart);
	return_ACPI_STATUS (Status);
	}


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsGetPackageArguments
	*
	* PARAMETERS: ObjDesc - A valid Package object
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Get Package length and initializer byte list. This implements
	* the late evaluation of these attributes.
	*
	******************************************************************************/

	ACPI_STATUS
	AcpiDsGetPackageArguments (
	ACPI_OPERAND_OBJECT *ObjDesc)
	{
	ACPI_NAMESPACE_NODE *Node;
	ACPI_STATUS Status;


	ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc);


	if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
	{
	return_ACPI_STATUS (AE_OK);
	}

	/* Get the Package node */

	Node = ObjDesc->Package.Node;
	if (!Node)
	{
	ACPI_ERROR ((AE_INFO,
	"No pointer back to namespace node in package %p", ObjDesc));
	return_ACPI_STATUS (AE_AML_INTERNAL);
	}

	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n"));

	/* Execute the AML code for the TermArg arguments */

	Status = AcpiDsExecuteArguments (Node, Node,
	ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart);
	return_ACPI_STATUS (Status);
	}


	/*******************************************************************************
	*
	* FUNCTION: AcpiDsGetRegionArguments
	*
	* PARAMETERS: ObjDesc - A valid region object
	*
	* RETURN: Status.
	*
	* DESCRIPTION: Get region address and length. This implements the late
	* evaluation of these region attributes.
	*
	******************************************************************************/

	ACPI_STATUS
	AcpiDsGetRegionArguments (
	ACPI_OPERAND_OBJECT *ObjDesc)
	{
	ACPI_NAMESPACE_NODE *Node;
	ACPI_STATUS Status;
	ACPI_OPERAND_OBJECT *ExtraDesc;


	ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);


	if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
	{
	return_ACPI_STATUS (AE_OK);
	}

	ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
	if (!ExtraDesc)
	{
	return_ACPI_STATUS (AE_NOT_EXIST);
	}

	/* Get the Region node */

	Node = ObjDesc->Region.Node;

	ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
	ACPI_TYPE_REGION, Node, NULL));

	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
	"[%4.4s] OpRegion Arg Init at AML %p\n",
	AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));

	/* Execute the argument AML */

	Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode,
	ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
	if (ACPI_FAILURE (Status))
	{
	return_ACPI_STATUS (Status);
	}

	Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
	ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
	return_ACPI_STATUS (Status);
	}