447 lines
16 KiB
C
447 lines
16 KiB
C
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/******************************************************************************
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*
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* Module Name: amstorob - AML Interpreter object store support, store to object
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* $Revision: 17 $
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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 __AMSTOROB_C__
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#include "acpi.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 "amlcode.h"
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#include "acnamesp.h"
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#include "actables.h"
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#define _COMPONENT INTERPRETER
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MODULE_NAME ("amstorob")
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/*******************************************************************************
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*
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* FUNCTION: AcpiAmlStoreObjectToObject
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*
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* PARAMETERS: *ValDesc - Value to be stored
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* *DestDesc - Object to receive the value
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*
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* RETURN: Status
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*
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* DESCRIPTION: Store an object to another object.
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*
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* The Assignment of an object to another (not named) object
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* is handled here.
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* The val passed in will replace the current value (if any)
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* with the input value.
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*
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* When storing into an object the data is converted to the
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* target object type then stored in the object. This means
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* that the target object type (for an initialized target) will
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* not be changed by a store operation.
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*
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* This module allows destination types of Number, String,
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* and Buffer.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlStoreObjectToObject (
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ACPI_OPERAND_OBJECT *ValDesc,
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ACPI_OPERAND_OBJECT *DestDesc,
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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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UINT8 *Buffer = NULL;
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UINT32 Length = 0;
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OBJECT_TYPE_INTERNAL DestinationType = DestDesc->Common.Type;
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FUNCTION_TRACE ("AmlStoreObjectToObject");
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DEBUG_PRINT (ACPI_INFO,
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("entered AcpiAmlStoreObjectToObject: Dest=%p, Val=%p\n",
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DestDesc, ValDesc));
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/*
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* Assuming the parameters are valid!!!
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*/
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ACPI_ASSERT((DestDesc) && (ValDesc));
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DEBUG_PRINT (ACPI_INFO, ("AmlStoreObjectToObject: Storing %s into %s\n",
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AcpiCmGetTypeName (ValDesc->Common.Type),
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AcpiCmGetTypeName (DestDesc->Common.Type)));
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/*
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* First ensure we have a value that can be stored in the target
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*/
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switch (DestinationType)
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{
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/* Type of Name's existing value */
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case ACPI_TYPE_NUMBER:
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/*
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* These cases all require only number values or values that
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* can be converted to numbers.
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*
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* If value is not a Number, try to resolve it to one.
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*/
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if (ValDesc->Common.Type != ACPI_TYPE_NUMBER)
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{
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/*
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* Initially not a number, convert
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*/
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Status = AcpiAmlResolveToValue (&ValDesc, WalkState);
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if (ACPI_SUCCESS (Status) &&
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(ValDesc->Common.Type != ACPI_TYPE_NUMBER))
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{
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/*
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* Conversion successful but still not a number
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlStoreObjectToObject: Value assigned to %s must be Number, not %s\n",
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AcpiCmGetTypeName (DestinationType),
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AcpiCmGetTypeName (ValDesc->Common.Type)));
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Status = AE_AML_OPERAND_TYPE;
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}
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}
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break;
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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/*
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* Storing into a Field in a region or into a buffer or into
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* a string all is essentially the same.
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*
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* If value is not a valid type, try to resolve it to one.
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*/
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if ((ValDesc->Common.Type != ACPI_TYPE_NUMBER) &&
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(ValDesc->Common.Type != ACPI_TYPE_BUFFER) &&
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(ValDesc->Common.Type != ACPI_TYPE_STRING))
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{
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/*
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* Initially not a valid type, convert
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*/
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Status = AcpiAmlResolveToValue (&ValDesc, WalkState);
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if (ACPI_SUCCESS (Status) &&
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(ValDesc->Common.Type != ACPI_TYPE_NUMBER) &&
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(ValDesc->Common.Type != ACPI_TYPE_BUFFER) &&
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(ValDesc->Common.Type != ACPI_TYPE_STRING))
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{
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/*
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* Conversion successful but still not a valid type
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlStoreObjectToObject: Assign wrong type %s to %s (must be type Num/Str/Buf)\n",
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AcpiCmGetTypeName (ValDesc->Common.Type),
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AcpiCmGetTypeName (DestinationType)));
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Status = AE_AML_OPERAND_TYPE;
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}
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}
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break;
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default:
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/*
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* TBD: [Unhandled] What other combinations must be implemented?
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*/
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Status = AE_NOT_IMPLEMENTED;
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break;
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}
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/* Exit now if failure above */
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if (ACPI_FAILURE (Status))
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{
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goto CleanUpAndBailOut;
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}
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/*
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* AcpiEverything is ready to execute now, We have
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* a value we can handle, just perform the update
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*/
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switch (DestinationType)
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{
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case ACPI_TYPE_STRING:
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/*
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* Perform the update
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*/
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switch (ValDesc->Common.Type)
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{
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case ACPI_TYPE_NUMBER:
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Buffer = (UINT8 *) &ValDesc->Number.Value;
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Length = sizeof (ValDesc->Number.Value);
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break;
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case ACPI_TYPE_BUFFER:
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Buffer = (UINT8 *) ValDesc->Buffer.Pointer;
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Length = ValDesc->Buffer.Length;
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break;
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case ACPI_TYPE_STRING:
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Buffer = (UINT8 *) ValDesc->String.Pointer;
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Length = ValDesc->String.Length;
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break;
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}
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/*
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* Setting a string value replaces the old string
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*/
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if (Length < DestDesc->String.Length)
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{
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/*
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* Zero fill, not willing to do pointer arithmetic for
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* architecture independence. Just clear the whole thing
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*/
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MEMSET(DestDesc->String.Pointer, 0, DestDesc->String.Length);
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MEMCPY(DestDesc->String.Pointer, Buffer, Length);
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}
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else
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{
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/*
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* Free the current buffer, then allocate a buffer
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* large enough to hold the value
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*/
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if ( DestDesc->String.Pointer &&
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!AcpiTbSystemTablePointer (DestDesc->String.Pointer))
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{
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/*
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* Only free if not a pointer into the DSDT
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*/
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AcpiCmFree(DestDesc->String.Pointer);
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}
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DestDesc->String.Pointer = AcpiCmAllocate (Length + 1);
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DestDesc->String.Length = Length;
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if (!DestDesc->String.Pointer)
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{
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Status = AE_NO_MEMORY;
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goto CleanUpAndBailOut;
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}
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MEMCPY(DestDesc->String.Pointer, Buffer, Length);
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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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* Perform the update to the buffer
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*/
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switch (ValDesc->Common.Type)
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{
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case ACPI_TYPE_NUMBER:
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Buffer = (UINT8 *) &ValDesc->Number.Value;
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Length = sizeof (ValDesc->Number.Value);
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break;
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case ACPI_TYPE_BUFFER:
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Buffer = (UINT8 *) ValDesc->Buffer.Pointer;
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Length = ValDesc->Buffer.Length;
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break;
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case ACPI_TYPE_STRING:
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Buffer = (UINT8 *) ValDesc->String.Pointer;
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Length = ValDesc->String.Length;
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break;
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}
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/*
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* If the buffer is uninitialized,
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* memory needs to be allocated for the copy.
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*/
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if(0 == DestDesc->Buffer.Length)
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{
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DestDesc->Buffer.Pointer = AcpiCmCallocate(Length);
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DestDesc->Buffer.Length = Length;
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if (!DestDesc->Buffer.Pointer)
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{
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Status = AE_NO_MEMORY;
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goto CleanUpAndBailOut;
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}
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}
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/*
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* Buffer is a static allocation,
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* only place what will fit in the buffer.
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*/
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if (Length <= DestDesc->Buffer.Length)
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{
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/*
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* Zero fill first, not willing to do pointer arithmetic for
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* architecture independence. Just clear the whole thing
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*/
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MEMSET(DestDesc->Buffer.Pointer, 0, DestDesc->Buffer.Length);
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MEMCPY(DestDesc->Buffer.Pointer, Buffer, Length);
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}
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else
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{
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/*
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* truncate, copy only what will fit
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*/
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MEMCPY(DestDesc->Buffer.Pointer, Buffer, DestDesc->Buffer.Length);
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DEBUG_PRINT (ACPI_INFO,
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("AmlStoreObjectToObject: Truncating src buffer from %d to %d\n",
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Length, DestDesc->Buffer.Length));
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}
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break;
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case ACPI_TYPE_NUMBER:
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DestDesc->Number.Value = ValDesc->Number.Value;
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/* Truncate value if we are executing from a 32-bit ACPI table */
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AcpiAmlTruncateFor32bitTable (DestDesc, WalkState);
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break;
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default:
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/*
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* All other types than Alias and the various Fields come here.
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* Store ValDesc as the new value of the Name, and set
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* the Name's type to that of the value being stored in it.
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* ValDesc reference count is incremented by AttachObject.
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*/
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DEBUG_PRINT (ACPI_WARN,
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("AmlStoreObjectToObject: Store into %s not implemented\n",
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AcpiCmGetTypeName (DestDesc->Common.Type)));
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Status = AE_NOT_IMPLEMENTED;
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break;
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}
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CleanUpAndBailOut:
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return_ACPI_STATUS (Status);
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}
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