814 lines
23 KiB
C
814 lines
23 KiB
C
/******************************************************************************
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*
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* Module Name: exconvrt - Object conversion routines
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* $Revision: 49 $
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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 - 2003, Intel Corp.
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* All rights 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 __EXCONVRT_C__
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#include "acpi.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exconvrt")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToInteger
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to an integer.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToInteger (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 i;
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 Count;
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UINT8 *Pointer;
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ACPI_INTEGER Result;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE_PTR ("ExConvertToInteger", ObjDesc);
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
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{
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case ACPI_TYPE_INTEGER:
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*ResultDesc = ObjDesc;
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return_ACPI_STATUS (AE_OK);
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case ACPI_TYPE_STRING:
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Pointer = (UINT8 *) ObjDesc->String.Pointer;
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Count = ObjDesc->String.Length;
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break;
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case ACPI_TYPE_BUFFER:
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Pointer = ObjDesc->Buffer.Pointer;
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Count = ObjDesc->Buffer.Length;
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break;
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default:
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return_ACPI_STATUS (AE_TYPE);
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}
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/*
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* Convert the buffer/string to an integer. Note that both buffers and
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* strings are treated as raw data - we don't convert ascii to hex for
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* strings.
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*
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* There are two terminating conditions for the loop:
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* 1) The size of an integer has been reached, or
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* 2) The end of the buffer or string has been reached
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*/
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Result = 0;
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/* Transfer no more than an integer's worth of data */
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if (Count > AcpiGbl_IntegerByteWidth)
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{
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Count = AcpiGbl_IntegerByteWidth;
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}
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/*
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* String conversion is different than Buffer conversion
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*/
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
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{
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case ACPI_TYPE_STRING:
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/*
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* Convert string to an integer
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* String must be hexadecimal as per the ACPI specification
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*/
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Status = AcpiUtStrtoul64 ((char *) Pointer, 16, &Result);
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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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break;
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case ACPI_TYPE_BUFFER:
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/*
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* Buffer conversion - we simply grab enough raw data from the
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* buffer to fill an integer
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*/
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for (i = 0; i < Count; i++)
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{
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/*
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* Get next byte and shift it into the Result.
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* Little endian is used, meaning that the first byte of the buffer
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* is the LSB of the integer
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*/
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Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8));
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}
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break;
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default:
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/* No other types can get here */
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break;
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}
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/*
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* Create a new integer
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!RetDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Save the Result */
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RetDesc->Integer.Value = Result;
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/*
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* If we are about to overwrite the original object on the operand stack,
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* we must remove a reference on the original object because we are
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* essentially removing it from the stack.
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*/
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToBuffer
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to a Buffer
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToBuffer (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 i;
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UINT8 *NewBuf;
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ACPI_FUNCTION_TRACE_PTR ("ExConvertToBuffer", ObjDesc);
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
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{
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case ACPI_TYPE_BUFFER:
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/* No conversion necessary */
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*ResultDesc = ObjDesc;
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return_ACPI_STATUS (AE_OK);
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case ACPI_TYPE_INTEGER:
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/*
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* Create a new Buffer object.
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* Need enough space for one integer
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*/
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RetDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth);
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if (!RetDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the integer to the buffer */
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NewBuf = RetDesc->Buffer.Pointer;
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for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
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{
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NewBuf[i] = (UINT8) (ObjDesc->Integer.Value >> (i * 8));
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}
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break;
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case ACPI_TYPE_STRING:
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/*
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* Create a new Buffer object
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* Size will be the string length
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*/
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RetDesc = AcpiUtCreateBufferObject ((ACPI_SIZE) ObjDesc->String.Length);
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if (!RetDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the string to the buffer */
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NewBuf = RetDesc->Buffer.Pointer;
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ACPI_STRNCPY ((char *) NewBuf, (char *) ObjDesc->String.Pointer,
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ObjDesc->String.Length);
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break;
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default:
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return_ACPI_STATUS (AE_TYPE);
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}
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/* Mark buffer initialized */
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RetDesc->Common.Flags |= AOPOBJ_DATA_VALID;
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/*
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* If we are about to overwrite the original object on the operand stack,
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* we must remove a reference on the original object because we are
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* essentially removing it from the stack.
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*/
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertAscii
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*
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* PARAMETERS: Integer - Value to be converted
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* Base - 10 or 16
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* String - Where the string is returned
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* DataWidth - Size of data item to be converted
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*
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* RETURN: Actual string length
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*
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* DESCRIPTION: Convert an ACPI Integer to a hex or decimal string
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*
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******************************************************************************/
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UINT32
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AcpiExConvertToAscii (
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ACPI_INTEGER Integer,
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UINT32 Base,
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UINT8 *String,
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UINT8 DataWidth)
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{
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UINT32 i;
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UINT32 j;
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UINT32 k = 0;
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char HexDigit;
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ACPI_INTEGER Digit;
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UINT32 Remainder;
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UINT32 Length;
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BOOLEAN LeadingZero;
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ACPI_FUNCTION_ENTRY ();
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if (DataWidth < sizeof (ACPI_INTEGER))
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{
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LeadingZero = FALSE;
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Length = DataWidth;
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}
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else
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{
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LeadingZero = TRUE;
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Length = sizeof (ACPI_INTEGER);
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}
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switch (Base)
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{
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case 10:
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Remainder = 0;
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for (i = ACPI_MAX_DECIMAL_DIGITS; i > 0 ; i--)
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{
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/* Divide by nth factor of 10 */
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Digit = Integer;
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for (j = 1; j < i; j++)
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{
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(void) AcpiUtShortDivide (&Digit, 10, &Digit, &Remainder);
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}
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/* Create the decimal digit */
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if (Digit != 0)
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{
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LeadingZero = FALSE;
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}
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if (!LeadingZero)
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{
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String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder);
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k++;
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}
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}
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break;
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case 16:
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/* Copy the integer to the buffer */
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for (i = 0, j = ((Length * 2) -1); i < (Length * 2); i++, j--)
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{
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HexDigit = AcpiUtHexToAsciiChar (Integer, (j * 4));
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if (HexDigit != ACPI_ASCII_ZERO)
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{
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LeadingZero = FALSE;
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}
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if (!LeadingZero)
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{
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String[k] = (UINT8) HexDigit;
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k++;
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}
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}
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break;
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default:
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break;
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}
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/*
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* Since leading zeros are supressed, we must check for the case where
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* the integer equals 0.
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*
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* Finally, null terminate the string and return the length
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*/
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if (!k)
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{
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String [0] = ACPI_ASCII_ZERO;
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k = 1;
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}
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String [k] = 0;
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return (k);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToString
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to a string
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToString (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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UINT32 Base,
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UINT32 MaxLength,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 i;
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UINT32 StringLength;
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UINT8 *NewBuf;
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UINT8 *Pointer;
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ACPI_FUNCTION_TRACE_PTR ("ExConvertToString", ObjDesc);
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
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{
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case ACPI_TYPE_STRING:
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if (MaxLength >= ObjDesc->String.Length)
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{
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*ResultDesc = ObjDesc;
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return_ACPI_STATUS (AE_OK);
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}
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else
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{
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/* Must copy the string first and then truncate it */
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return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
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}
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case ACPI_TYPE_INTEGER:
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StringLength = AcpiGbl_IntegerByteWidth * 2;
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if (Base == 10)
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{
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StringLength = ACPI_MAX_DECIMAL_DIGITS;
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}
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/*
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* Create a new String
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
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if (!RetDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Need enough space for one ASCII integer plus null terminator */
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NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
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if (!NewBuf)
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{
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ACPI_REPORT_ERROR
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(("ExConvertToString: Buffer allocation failure\n"));
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AcpiUtRemoveReference (RetDesc);
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Convert */
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i = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, NewBuf, sizeof (ACPI_INTEGER));
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/* Null terminate at the correct place */
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if (MaxLength < i)
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{
|
|
NewBuf[MaxLength] = 0;
|
|
RetDesc->String.Length = MaxLength;
|
|
}
|
|
else
|
|
{
|
|
NewBuf [i] = 0;
|
|
RetDesc->String.Length = i;
|
|
}
|
|
|
|
RetDesc->Buffer.Pointer = NewBuf;
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
/* Find the string length */
|
|
|
|
Pointer = ObjDesc->Buffer.Pointer;
|
|
for (StringLength = 0; StringLength < ObjDesc->Buffer.Length; StringLength++)
|
|
{
|
|
/* Exit on null terminator */
|
|
|
|
if (!Pointer[StringLength])
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (MaxLength > ACPI_MAX_STRING_CONVERSION)
|
|
{
|
|
if (StringLength > ACPI_MAX_STRING_CONVERSION)
|
|
{
|
|
return_ACPI_STATUS (AE_AML_STRING_LIMIT);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Create a new string object
|
|
*/
|
|
RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
|
|
if (!RetDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* String length is the lesser of the Max or the actual length */
|
|
|
|
if (MaxLength < StringLength)
|
|
{
|
|
StringLength = MaxLength;
|
|
}
|
|
|
|
NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
|
|
if (!NewBuf)
|
|
{
|
|
ACPI_REPORT_ERROR
|
|
(("ExConvertToString: Buffer allocation failure\n"));
|
|
AcpiUtRemoveReference (RetDesc);
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Copy the appropriate number of buffer characters */
|
|
|
|
ACPI_MEMCPY (NewBuf, Pointer, StringLength);
|
|
|
|
/* Null terminate */
|
|
|
|
NewBuf [StringLength] = 0;
|
|
RetDesc->Buffer.Pointer = NewBuf;
|
|
RetDesc->String.Length = StringLength;
|
|
break;
|
|
|
|
|
|
default:
|
|
return_ACPI_STATUS (AE_TYPE);
|
|
}
|
|
|
|
|
|
/*
|
|
* If we are about to overwrite the original object on the operand stack,
|
|
* we must remove a reference on the original object because we are
|
|
* essentially removing it from the stack.
|
|
*/
|
|
if (*ResultDesc == ObjDesc)
|
|
{
|
|
if (WalkState->Opcode != AML_STORE_OP)
|
|
{
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
}
|
|
}
|
|
|
|
*ResultDesc = RetDesc;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExConvertToTargetType
|
|
*
|
|
* PARAMETERS: DestinationType - Current type of the destination
|
|
* SourceDesc - Source object to be converted.
|
|
* WalkState - Current method state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Implements "implicit conversion" rules for storing an object.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExConvertToTargetType (
|
|
ACPI_OBJECT_TYPE DestinationType,
|
|
ACPI_OPERAND_OBJECT *SourceDesc,
|
|
ACPI_OPERAND_OBJECT **ResultDesc,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExConvertToTargetType");
|
|
|
|
|
|
/* Default behavior */
|
|
|
|
*ResultDesc = SourceDesc;
|
|
|
|
/*
|
|
* If required by the target,
|
|
* perform implicit conversion on the source before we store it.
|
|
*/
|
|
switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs))
|
|
{
|
|
case ARGI_SIMPLE_TARGET:
|
|
case ARGI_FIXED_TARGET:
|
|
case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
|
|
|
|
switch (DestinationType)
|
|
{
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
/*
|
|
* Named field can always handle conversions
|
|
*/
|
|
break;
|
|
|
|
default:
|
|
/* No conversion allowed for these types */
|
|
|
|
if (DestinationType != ACPI_GET_OBJECT_TYPE (SourceDesc))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Explicit operator, will store (%s) over existing type (%s)\n",
|
|
AcpiUtGetObjectTypeName (SourceDesc),
|
|
AcpiUtGetTypeName (DestinationType)));
|
|
Status = AE_TYPE;
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
case ARGI_TARGETREF:
|
|
|
|
switch (DestinationType)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
/*
|
|
* These types require an Integer operand. We can convert
|
|
* a Buffer or a String to an Integer if necessary.
|
|
*/
|
|
Status = AcpiExConvertToInteger (SourceDesc, ResultDesc, WalkState);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
/*
|
|
* The operand must be a String. We can convert an
|
|
* Integer or Buffer if necessary
|
|
*/
|
|
Status = AcpiExConvertToString (SourceDesc, ResultDesc, 16, ACPI_UINT32_MAX, WalkState);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
/*
|
|
* The operand must be a Buffer. We can convert an
|
|
* Integer or String if necessary
|
|
*/
|
|
Status = AcpiExConvertToBuffer (SourceDesc, ResultDesc, WalkState);
|
|
break;
|
|
|
|
|
|
default:
|
|
Status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
|
|
case ARGI_REFERENCE:
|
|
/*
|
|
* CreateXxxxField cases - we are storing the field object into the name
|
|
*/
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Unknown Target type ID 0x%X Op %s DestType %s\n",
|
|
GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
|
|
WalkState->OpInfo->Name, AcpiUtGetTypeName (DestinationType)));
|
|
|
|
Status = AE_AML_INTERNAL;
|
|
}
|
|
|
|
/*
|
|
* Source-to-Target conversion semantics:
|
|
*
|
|
* If conversion to the target type cannot be performed, then simply
|
|
* overwrite the target with the new object and type.
|
|
*/
|
|
if (Status == AE_TYPE)
|
|
{
|
|
Status = AE_OK;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|