796 lines
23 KiB
C
796 lines
23 KiB
C
/******************************************************************************
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*
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* Module Name: dswexec - Dispatcher method execution callbacks;
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* dispatch to interpreter.
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2012, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#define __DSWEXEC_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#include "acdebug.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME ("dswexec")
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/*
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* Dispatch table for opcode classes
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*/
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static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] =
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{
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AcpiExOpcode_0A_0T_1R,
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AcpiExOpcode_1A_0T_0R,
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AcpiExOpcode_1A_0T_1R,
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AcpiExOpcode_1A_1T_0R,
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AcpiExOpcode_1A_1T_1R,
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AcpiExOpcode_2A_0T_0R,
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AcpiExOpcode_2A_0T_1R,
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AcpiExOpcode_2A_1T_1R,
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AcpiExOpcode_2A_2T_1R,
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AcpiExOpcode_3A_0T_0R,
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AcpiExOpcode_3A_1T_1R,
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AcpiExOpcode_6A_0T_1R
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};
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/*****************************************************************************
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*
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* FUNCTION: AcpiDsGetPredicateValue
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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* ResultObj - if non-zero, pop result from result stack
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get the result of a predicate evaluation
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*
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****************************************************************************/
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ACPI_STATUS
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AcpiDsGetPredicateValue (
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ACPI_WALK_STATE *WalkState,
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ACPI_OPERAND_OBJECT *ResultObj)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OPERAND_OBJECT *LocalObjDesc = NULL;
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ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState);
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WalkState->ControlState->Common.State = 0;
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if (ResultObj)
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{
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Status = AcpiDsResultPop (&ObjDesc, WalkState);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not get result from predicate evaluation"));
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return_ACPI_STATUS (Status);
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}
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}
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else
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{
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Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ObjDesc = WalkState->Operands [0];
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}
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if (!ObjDesc)
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{
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ACPI_ERROR ((AE_INFO,
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"No predicate ObjDesc=%p State=%p",
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ObjDesc, WalkState));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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/*
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* Result of predicate evaluation must be an Integer
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* object. Implicitly convert the argument if necessary.
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*/
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Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
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{
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ACPI_ERROR ((AE_INFO,
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"Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
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ObjDesc, WalkState, ObjDesc->Common.Type));
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Status = AE_AML_OPERAND_TYPE;
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goto Cleanup;
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}
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/* Truncate the predicate to 32-bits if necessary */
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(void) AcpiExTruncateFor32bitTable (LocalObjDesc);
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/*
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* Save the result of the predicate evaluation on
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* the control stack
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*/
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if (LocalObjDesc->Integer.Value)
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{
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WalkState->ControlState->Common.Value = TRUE;
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}
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else
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{
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/*
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* Predicate is FALSE, we will just toss the
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* rest of the package
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*/
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WalkState->ControlState->Common.Value = FALSE;
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Status = AE_CTRL_FALSE;
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}
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/* Predicate can be used for an implicit return value */
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(void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);
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Cleanup:
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
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WalkState->ControlState->Common.Value, WalkState->Op));
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/* Break to debugger to display result */
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ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (LocalObjDesc, WalkState));
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/*
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* Delete the predicate result object (we know that
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* we don't need it anymore)
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*/
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if (LocalObjDesc != ObjDesc)
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{
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AcpiUtRemoveReference (LocalObjDesc);
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}
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AcpiUtRemoveReference (ObjDesc);
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WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
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return_ACPI_STATUS (Status);
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}
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/*****************************************************************************
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*
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* FUNCTION: AcpiDsExecBeginOp
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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* OutOp - Where to return op if a new one is created
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback used during the execution of control
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* methods. This is where most operators and operands are
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* dispatched to the interpreter.
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*
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****************************************************************************/
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ACPI_STATUS
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AcpiDsExecBeginOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT **OutOp)
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{
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ACPI_PARSE_OBJECT *Op;
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ACPI_STATUS Status = AE_OK;
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UINT32 OpcodeClass;
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ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState);
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Op = WalkState->Op;
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if (!Op)
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{
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Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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Op = *OutOp;
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WalkState->Op = Op;
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WalkState->Opcode = Op->Common.AmlOpcode;
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WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
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if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"(%s) Popping scope for Op %p\n",
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AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
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Status = AcpiDsScopeStackPop (WalkState);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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}
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}
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if (Op == WalkState->Origin)
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{
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if (OutOp)
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{
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*OutOp = Op;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* If the previous opcode was a conditional, this opcode
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* must be the beginning of the associated predicate.
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* Save this knowledge in the current scope descriptor
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*/
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if ((WalkState->ControlState) &&
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(WalkState->ControlState->Common.State ==
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ACPI_CONTROL_CONDITIONAL_EXECUTING))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n",
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Op, WalkState));
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WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING;
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/* Save start of predicate */
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WalkState->ControlState->Control.PredicateOp = Op;
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}
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OpcodeClass = WalkState->OpInfo->Class;
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/* We want to send namepaths to the load code */
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if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
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{
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OpcodeClass = AML_CLASS_NAMED_OBJECT;
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}
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/*
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* Handle the opcode based upon the opcode type
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*/
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switch (OpcodeClass)
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{
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case AML_CLASS_CONTROL:
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Status = AcpiDsExecBeginControlOp (WalkState, Op);
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break;
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case AML_CLASS_NAMED_OBJECT:
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if (WalkState->WalkType & ACPI_WALK_METHOD)
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{
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/*
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* Found a named object declaration during method execution;
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* we must enter this object into the namespace. The created
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* object is temporary and will be deleted upon completion of
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* the execution of this method.
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*
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* Note 10/2010: Except for the Scope() op. This opcode does
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* not actually create a new object, it refers to an existing
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* object. However, for Scope(), we want to indeed open a
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* new scope.
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*/
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if (Op->Common.AmlOpcode != AML_SCOPE_OP)
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{
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Status = AcpiDsLoad2BeginOp (WalkState, NULL);
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}
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else
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{
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Status = AcpiDsScopeStackPush (Op->Named.Node,
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Op->Named.Node->Type, WalkState);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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}
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break;
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case AML_CLASS_EXECUTE:
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case AML_CLASS_CREATE:
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break;
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default:
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break;
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}
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/* Nothing to do here during method execution */
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return_ACPI_STATUS (Status);
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ErrorExit:
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Status = AcpiDsMethodError (Status, WalkState);
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return_ACPI_STATUS (Status);
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}
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/*****************************************************************************
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*
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* FUNCTION: AcpiDsExecEndOp
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback used during the execution of control
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* methods. The only thing we really need to do here is to
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* notice the beginning of IF, ELSE, and WHILE blocks.
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*
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****************************************************************************/
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ACPI_STATUS
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AcpiDsExecEndOp (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_PARSE_OBJECT *Op;
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ACPI_STATUS Status = AE_OK;
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UINT32 OpType;
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UINT32 OpClass;
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ACPI_PARSE_OBJECT *NextOp;
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ACPI_PARSE_OBJECT *FirstArg;
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ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
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Op = WalkState->Op;
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OpType = WalkState->OpInfo->Type;
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OpClass = WalkState->OpInfo->Class;
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if (OpClass == AML_CLASS_UNKNOWN)
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{
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ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
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return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
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}
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FirstArg = Op->Common.Value.Arg;
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/* Init the walk state */
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WalkState->NumOperands = 0;
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WalkState->OperandIndex = 0;
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WalkState->ReturnDesc = NULL;
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WalkState->ResultObj = NULL;
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/* Call debugger for single step support (DEBUG build only) */
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ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass));
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ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);});
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/* Decode the Opcode Class */
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switch (OpClass)
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{
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case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
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if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
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{
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Status = AcpiDsEvaluateNamePath (WalkState);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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}
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break;
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case AML_CLASS_EXECUTE: /* Most operators with arguments */
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/* Build resolved operand stack */
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Status = AcpiDsCreateOperands (WalkState, FirstArg);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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/*
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* All opcodes require operand resolution, with the only exceptions
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* being the ObjectType and SizeOf operators.
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*/
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if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
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{
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/* Resolve all operands */
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Status = AcpiExResolveOperands (WalkState->Opcode,
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&(WalkState->Operands [WalkState->NumOperands -1]),
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WalkState);
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}
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if (ACPI_SUCCESS (Status))
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{
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/*
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* Dispatch the request to the appropriate interpreter handler
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* routine. There is one routine per opcode "type" based upon the
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* number of opcode arguments and return type.
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*/
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Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
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}
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else
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{
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/*
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* Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
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* Local is uninitialized.
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*/
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if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
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(WalkState->Opcode == AML_STORE_OP) &&
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(WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
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(WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
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(WalkState->Operands[0]->Reference.Class ==
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WalkState->Operands[1]->Reference.Class) &&
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(WalkState->Operands[0]->Reference.Value ==
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WalkState->Operands[1]->Reference.Value))
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{
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Status = AE_OK;
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}
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else
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"While resolving operands for [%s]",
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AcpiPsGetOpcodeName (WalkState->Opcode)));
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}
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}
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/* Always delete the argument objects and clear the operand stack */
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AcpiDsClearOperands (WalkState);
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/*
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* If a result object was returned from above, push it on the
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* current result stack
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*/
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if (ACPI_SUCCESS (Status) &&
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WalkState->ResultObj)
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{
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Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
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}
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break;
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|
|
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default:
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switch (OpType)
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{
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case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
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/* 1 Operand, 0 ExternalResult, 0 InternalResult */
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Status = AcpiDsExecEndControlOp (WalkState, Op);
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break;
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case AML_TYPE_METHOD_CALL:
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/*
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* If the method is referenced from within a package
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* declaration, it is not a invocation of the method, just
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* a reference to it.
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*/
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if ((Op->Asl.Parent) &&
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((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
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(Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"Method Reference in a Package, Op=%p\n", Op));
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Op->Common.Node = (ACPI_NAMESPACE_NODE *) Op->Asl.Value.Arg->Asl.Node;
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AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", Op));
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/*
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* (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
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* the method Node pointer
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*/
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/* NextOp points to the op that holds the method name */
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NextOp = FirstArg;
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/* NextOp points to first argument op */
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NextOp = NextOp->Common.Next;
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/*
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* Get the method's arguments and put them on the operand stack
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*/
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Status = AcpiDsCreateOperands (WalkState, NextOp);
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if (ACPI_FAILURE (Status))
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{
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break;
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}
|
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/*
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|
* Since the operands will be passed to another control method,
|
|
* we must resolve all local references here (Local variables,
|
|
* arguments to *this* method, etc.)
|
|
*/
|
|
Status = AcpiDsResolveOperands (WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
/* On error, clear all resolved operands */
|
|
|
|
AcpiDsClearOperands (WalkState);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Tell the walk loop to preempt this running method and
|
|
* execute the new method
|
|
*/
|
|
Status = AE_CTRL_TRANSFER;
|
|
|
|
/*
|
|
* Return now; we don't want to disturb anything,
|
|
* especially the operand count!
|
|
*/
|
|
return_ACPI_STATUS (Status);
|
|
|
|
|
|
case AML_TYPE_CREATE_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Executing CreateField Buffer/Index Op=%p\n", Op));
|
|
|
|
Status = AcpiDsLoad2EndOp (WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
|
|
break;
|
|
|
|
|
|
case AML_TYPE_CREATE_OBJECT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Executing CreateObject (Buffer/Package) Op=%p\n", Op));
|
|
|
|
switch (Op->Common.Parent->Common.AmlOpcode)
|
|
{
|
|
case AML_NAME_OP:
|
|
|
|
/*
|
|
* Put the Node on the object stack (Contains the ACPI Name
|
|
* of this object)
|
|
*/
|
|
WalkState->Operands[0] = (void *) Op->Common.Parent->Common.Node;
|
|
WalkState->NumOperands = 1;
|
|
|
|
Status = AcpiDsCreateNode (WalkState,
|
|
Op->Common.Parent->Common.Node,
|
|
Op->Common.Parent);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
/* Fall through */
|
|
/*lint -fallthrough */
|
|
|
|
case AML_INT_EVAL_SUBTREE_OP:
|
|
|
|
Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
|
|
AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
|
|
break;
|
|
|
|
default:
|
|
|
|
Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If a result object was returned from above, push it on the
|
|
* current result stack
|
|
*/
|
|
if (WalkState->ResultObj)
|
|
{
|
|
Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_TYPE_NAMED_FIELD:
|
|
case AML_TYPE_NAMED_COMPLEX:
|
|
case AML_TYPE_NAMED_SIMPLE:
|
|
case AML_TYPE_NAMED_NO_OBJ:
|
|
|
|
Status = AcpiDsLoad2EndOp (WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (Op->Common.AmlOpcode == AML_REGION_OP)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Executing OpRegion Address/Length Op=%p\n", Op));
|
|
|
|
Status = AcpiDsEvalRegionOperands (WalkState, Op);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Executing DataTableRegion Strings Op=%p\n", Op));
|
|
|
|
Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Executing BankField Op=%p\n", Op));
|
|
|
|
Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_TYPE_UNDEFINED:
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Undefined opcode type Op=%p", Op));
|
|
return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
|
|
|
|
|
|
case AML_TYPE_BOGUS:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"Internal opcode=%X type Op=%p\n",
|
|
WalkState->Opcode, Op));
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Unimplemented opcode, class=0x%X type=0x%X Opcode=-0x%X Op=%p",
|
|
OpClass, OpType, Op->Common.AmlOpcode, Op));
|
|
|
|
Status = AE_NOT_IMPLEMENTED;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ACPI 2.0 support for 64-bit integers: Truncate numeric
|
|
* result value if we are executing from a 32-bit ACPI table
|
|
*/
|
|
(void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
|
|
|
|
/*
|
|
* Check if we just completed the evaluation of a
|
|
* conditional predicate
|
|
*/
|
|
if ((ACPI_SUCCESS (Status)) &&
|
|
(WalkState->ControlState) &&
|
|
(WalkState->ControlState->Common.State ==
|
|
ACPI_CONTROL_PREDICATE_EXECUTING) &&
|
|
(WalkState->ControlState->Control.PredicateOp == Op))
|
|
{
|
|
Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
|
|
WalkState->ResultObj = NULL;
|
|
}
|
|
|
|
|
|
Cleanup:
|
|
|
|
if (WalkState->ResultObj)
|
|
{
|
|
/* Break to debugger to display result */
|
|
|
|
ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj,
|
|
WalkState));
|
|
|
|
/*
|
|
* Delete the result op if and only if:
|
|
* Parent will not use the result -- such as any
|
|
* non-nested type2 op in a method (parent will be method)
|
|
*/
|
|
AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
|
|
}
|
|
|
|
#ifdef _UNDER_DEVELOPMENT
|
|
|
|
if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
|
|
{
|
|
AcpiDbMethodEnd (WalkState);
|
|
}
|
|
#endif
|
|
|
|
/* Invoke exception handler on error */
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
Status = AcpiDsMethodError (Status, WalkState);
|
|
}
|
|
|
|
/* Always clear the object stack */
|
|
|
|
WalkState->NumOperands = 0;
|
|
return_ACPI_STATUS (Status);
|
|
}
|