634 lines
20 KiB
C
634 lines
20 KiB
C
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/******************************************************************************
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*
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* Module Name: amresolv - AML Interpreter object resolution
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* $Revision: 78 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, Intel Corp. All rights
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* reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __AMRESOLV_C__
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#include "acpi.h"
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#include "amlcode.h"
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#include "acparser.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 "actables.h"
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#include "acevents.h"
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#define _COMPONENT INTERPRETER
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MODULE_NAME ("amresolv")
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/*******************************************************************************
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*
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* FUNCTION: AcpiAmlGetFieldUnitValue
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*
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* PARAMETERS: *FieldDesc - Pointer to a FieldUnit
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* *ResultDesc - Pointer to an empty descriptor
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* which will become a Number
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* containing the field's value.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieve the value from a FieldUnit
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlGetFieldUnitValue (
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ACPI_OPERAND_OBJECT *FieldDesc,
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ACPI_OPERAND_OBJECT *ResultDesc)
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{
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ACPI_STATUS Status = AE_OK;
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UINT32 Mask;
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UINT8 *Location = NULL;
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BOOLEAN Locked = FALSE;
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FUNCTION_TRACE ("AmlGetFieldUnitValue");
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if (!FieldDesc)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlGetFieldUnitValue: Internal error - null field pointer\n"));
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Status = AE_AML_NO_OPERAND;
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}
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if (!(FieldDesc->Common.Flags & AOPOBJ_DATA_VALID))
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{
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Status = AcpiDsGetFieldUnitArguments (FieldDesc);
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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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if (!FieldDesc->FieldUnit.Container)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlGetFieldUnitValue: Internal error - null container pointer\n"));
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Status = AE_AML_INTERNAL;
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}
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else if (ACPI_TYPE_BUFFER != FieldDesc->FieldUnit.Container->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlGetFieldUnitValue: Internal error - container is not a Buffer\n"));
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Status = AE_AML_OPERAND_TYPE;
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}
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else if (!ResultDesc)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlGetFieldUnitValue: Internal error - null result pointer\n"));
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Status = AE_AML_INTERNAL;
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}
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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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/* Get the global lock if needed */
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Locked = AcpiAmlAcquireGlobalLock (FieldDesc->FieldUnit.LockRule);
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/* Field location is (base of buffer) + (byte offset) */
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Location = FieldDesc->FieldUnit.Container->Buffer.Pointer
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+ FieldDesc->FieldUnit.Offset;
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/*
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* Construct Mask with as many 1 bits as the field width
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*
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* NOTE: Only the bottom 5 bits are valid for a shift operation, so
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* special care must be taken for any shift greater than 31 bits.
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*
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* TBD: [Unhandled] Fields greater than 32-bits will not work.
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*/
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if (FieldDesc->FieldUnit.Length < 32)
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{
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Mask = ((UINT32) 1 << FieldDesc->FieldUnit.Length) - (UINT32) 1;
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}
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else
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{
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Mask = ACPI_UINT32_MAX;
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}
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ResultDesc->Number.Type = (UINT8) ACPI_TYPE_NUMBER;
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/* Get the 32 bit value at the location */
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MOVE_UNALIGNED32_TO_32 (&ResultDesc->Number.Value, Location);
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/*
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* Shift the 32-bit word containing the field, and mask off the
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* resulting value
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*/
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ResultDesc->Number.Value =
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(ResultDesc->Number.Value >> FieldDesc->FieldUnit.BitOffset) & Mask;
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DEBUG_PRINT (ACPI_INFO,
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("** Read from buffer %p byte %ld bit %d width %d addr %p mask %08lx val %08lx\n",
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FieldDesc->FieldUnit.Container->Buffer.Pointer,
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FieldDesc->FieldUnit.Offset,
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FieldDesc->FieldUnit.BitOffset,
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FieldDesc->FieldUnit.Length,
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Location, Mask, ResultDesc->Number.Value));
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/* Release global lock if we acquired it earlier */
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AcpiAmlReleaseGlobalLock (Locked);
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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: AcpiAmlResolveToValue
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*
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* PARAMETERS: **StackPtr - Points to entry on ObjStack, which can
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* be either an (ACPI_OPERAND_OBJECT *)
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* or an ACPI_HANDLE.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert Reference entries on ObjStack to Rvalues
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlResolveToValue (
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ACPI_OPERAND_OBJECT **StackPtr,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status = AE_OK;
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FUNCTION_TRACE_PTR ("AmlResolveToValue", StackPtr);
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if (!StackPtr || !*StackPtr)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveToValue: Internal error - null pointer\n"));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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/*
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* The entity pointed to by the StackPtr can be either
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* 1) A valid ACPI_OPERAND_OBJECT, or
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* 2) A ACPI_NAMESPACE_NODE (NamedObj)
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*/
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if (VALID_DESCRIPTOR_TYPE (*StackPtr, ACPI_DESC_TYPE_INTERNAL))
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{
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Status = AcpiAmlResolveObjectToValue (StackPtr, 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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* Object on the stack may have changed if AcpiAmlResolveObjectToValue()
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* was called (i.e., we can't use an _else_ here.)
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*/
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if (VALID_DESCRIPTOR_TYPE (*StackPtr, ACPI_DESC_TYPE_NAMED))
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{
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Status = AcpiAmlResolveNodeToValue ((ACPI_NAMESPACE_NODE **) StackPtr, WalkState);
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}
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DEBUG_PRINT (ACPI_INFO,
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("AmlResolveToValue: Returning resolved object %p\n", *StackPtr));
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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: AcpiAmlResolveObjectToValue
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*
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* PARAMETERS: StackPtr - Pointer to a stack location that contains a
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* ptr to an internal object.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieve the value from an internal object. The Reference type
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* uses the associated AML opcode to determine the value.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlResolveObjectToValue (
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ACPI_OPERAND_OBJECT **StackPtr,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *StackDesc;
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ACPI_STATUS Status = AE_OK;
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ACPI_HANDLE TempHandle = NULL;
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ACPI_OPERAND_OBJECT *ObjDesc = NULL;
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UINT32 Index = 0;
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UINT16 Opcode;
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FUNCTION_TRACE ("AmlResolveObjectToValue");
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StackDesc = *StackPtr;
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/* This is an ACPI_OPERAND_OBJECT */
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switch (StackDesc->Common.Type)
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{
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case INTERNAL_TYPE_REFERENCE:
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Opcode = StackDesc->Reference.OpCode;
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switch (Opcode)
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{
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case AML_NAME_OP:
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/*
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* Convert indirect name ptr to a direct name ptr.
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* Then, AcpiAmlResolveNodeToValue can be used to get the value
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*/
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TempHandle = StackDesc->Reference.Object;
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/* Delete the Reference Object */
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AcpiCmRemoveReference (StackDesc);
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/* Put direct name pointer onto stack and exit */
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(*StackPtr) = TempHandle;
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Status = AE_OK;
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break;
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case AML_LOCAL_OP:
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Index = StackDesc->Reference.Offset;
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/*
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* Get the local from the method's state info
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* Note: this increments the local's object reference count
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*/
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Status = AcpiDsMethodDataGetValue (MTH_TYPE_LOCAL, Index,
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WalkState, &ObjDesc);
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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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* Now we can delete the original Reference Object and
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* replace it with the resolve value
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*/
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AcpiCmRemoveReference (StackDesc);
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*StackPtr = ObjDesc;
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DEBUG_PRINT (ACPI_INFO,
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("AmlResolveObjectToValue: [Local%d] ValueObj is %p\n",
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Index, ObjDesc));
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if (ACPI_TYPE_NUMBER == ObjDesc->Common.Type)
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{
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/* Value is a Number */
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DEBUG_PRINT (ACPI_INFO,
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("AmlResolveObjectToValue: [Local%d] value=%X \n",
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Index, ObjDesc->Number.Value));
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}
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break;
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case AML_ARG_OP:
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Index = StackDesc->Reference.Offset;
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/*
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* Get the argument from the method's state info
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* Note: this increments the object reference count
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*/
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Status = AcpiDsMethodDataGetValue (MTH_TYPE_ARG, Index,
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WalkState, &ObjDesc);
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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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* Now we can delete the original Reference Object and
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* replace it with the resolve value
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*/
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AcpiCmRemoveReference (StackDesc);
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*StackPtr = ObjDesc;
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DEBUG_PRINT (TRACE_EXEC,
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("AmlResolveObjectToValue: [Arg%d] ValueObj is %p\n",
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Index, ObjDesc));
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if (ACPI_TYPE_NUMBER == ObjDesc->Common.Type)
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{
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/* Value is a Number */
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DEBUG_PRINT (ACPI_INFO,
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("AmlResolveObjectToValue: [Arg%d] value=%X\n",
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Index, ObjDesc->Number.Value));
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}
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break;
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/*
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* TBD: [Restructure] These next three opcodes change the type of
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* the object, which is actually a no-no.
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*/
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case AML_ZERO_OP:
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StackDesc->Common.Type = (UINT8) ACPI_TYPE_NUMBER;
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StackDesc->Number.Value = 0;
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break;
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case AML_ONE_OP:
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StackDesc->Common.Type = (UINT8) ACPI_TYPE_NUMBER;
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StackDesc->Number.Value = 1;
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break;
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case AML_ONES_OP:
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StackDesc->Common.Type = (UINT8) ACPI_TYPE_NUMBER;
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StackDesc->Number.Value = ACPI_INTEGER_MAX;
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/* Truncate value if we are executing from a 32-bit ACPI table */
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AcpiAmlTruncateFor32bitTable (StackDesc, WalkState);
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break;
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case AML_INDEX_OP:
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switch (StackDesc->Reference.TargetType)
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{
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case ACPI_TYPE_BUFFER_FIELD:
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/* Just return - leave the Reference on the stack */
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break;
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case ACPI_TYPE_PACKAGE:
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ObjDesc = *StackDesc->Reference.Where;
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if (ObjDesc)
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{
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/*
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* Valid obj descriptor, copy pointer to return value
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* (i.e., dereference the package index)
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* Delete the ref object, increment the returned object
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*/
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AcpiCmRemoveReference (StackDesc);
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AcpiCmAddReference (ObjDesc);
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*StackPtr = ObjDesc;
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}
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else
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{
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/*
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* A NULL object descriptor means an unitialized element of
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* the package, can't deref it
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveObjectToValue: Attempt to deref an Index to NULL pkg element Idx=%p\n", StackDesc));
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Status = AE_AML_UNINITIALIZED_ELEMENT;
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}
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break;
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default:
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/* Invalid reference OBJ*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveObjectToValue: Unknown TargetType %X in Index/Reference obj %p\n",
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StackDesc->Reference.TargetType, StackDesc));
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Status = AE_AML_INTERNAL;
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break;
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}
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break;
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case AML_DEBUG_OP:
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/* Just leave the object as-is */
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break;
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default:
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|
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("AmlResolveObjectToValue: Unknown Reference object subtype %02X in %p\n",
|
|
Opcode, StackDesc));
|
|
Status = AE_AML_INTERNAL;
|
|
|
|
} /* switch (Opcode) */
|
|
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
break; /* case INTERNAL_TYPE_REFERENCE */
|
|
|
|
|
|
case ACPI_TYPE_FIELD_UNIT:
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_ANY);
|
|
if (!ObjDesc)
|
|
{
|
|
/* Descriptor allocation failure */
|
|
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Status = AcpiAmlGetFieldUnitValue (StackDesc, ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiCmRemoveReference (ObjDesc);
|
|
ObjDesc = NULL;
|
|
}
|
|
|
|
*StackPtr = (void *) ObjDesc;
|
|
break;
|
|
|
|
|
|
case INTERNAL_TYPE_BANK_FIELD:
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_ANY);
|
|
if (!ObjDesc)
|
|
{
|
|
/* Descriptor allocation failure */
|
|
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Status = AcpiAmlGetFieldUnitValue (StackDesc, ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiCmRemoveReference (ObjDesc);
|
|
ObjDesc = NULL;
|
|
}
|
|
|
|
*StackPtr = (void *) ObjDesc;
|
|
break;
|
|
|
|
|
|
/* TBD: [Future] - may need to handle IndexField, and DefField someday */
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
} /* switch (StackDesc->Common.Type) */
|
|
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|