422 lines
15 KiB
C
422 lines
15 KiB
C
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/******************************************************************************
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*
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* Module Name: exresolv - AML Interpreter object resolution
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* $Revision: 103 $
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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, 2000, 2001, 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 __EXRESOLV_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 ACPI_EXECUTER
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MODULE_NAME ("exresolv")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExResolveToValue
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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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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert Reference objects to values
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExResolveToValue (
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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;
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FUNCTION_TRACE_PTR ("ExResolveToValue", StackPtr);
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if (!StackPtr || !*StackPtr)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - 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 = AcpiExResolveObjectToValue (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 AcpiExResolveObjectToValue()
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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 = AcpiExResolveNodeToValue ((ACPI_NAMESPACE_NODE **) StackPtr,
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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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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Resolved object %p\n", *StackPtr));
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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: AcpiExResolveObjectToValue
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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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* WalkState - Current method state
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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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AcpiExResolveObjectToValue (
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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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ACPI_OPERAND_OBJECT *StackDesc;
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void *TempNode;
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ACPI_OPERAND_OBJECT *ObjDesc;
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UINT16 Opcode;
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FUNCTION_TRACE ("ExResolveObjectToValue");
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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, AcpiExResolveNodeToValue can be used to get the value
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*/
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TempNode = StackDesc->Reference.Object;
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/* Delete the Reference Object */
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AcpiUtRemoveReference (StackDesc);
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/* Put direct name pointer onto stack and exit */
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(*StackPtr) = TempNode;
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break;
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case AML_LOCAL_OP:
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case AML_ARG_OP:
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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 (Opcode,
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StackDesc->Reference.Offset, 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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AcpiUtRemoveReference (StackDesc);
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*StackPtr = ObjDesc;
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "[Arg/Local %d] ValueObj is %p\n",
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StackDesc->Reference.Offset, ObjDesc));
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break;
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/*
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* For constants, we must change the reference/constant object
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* to a real integer object
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*/
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case AML_ZERO_OP:
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case AML_ONE_OP:
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case AML_ONES_OP:
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case AML_REVISION_OP:
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/* Create a new integer object */
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ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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switch (Opcode)
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{
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case AML_ZERO_OP:
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ObjDesc->Integer.Value = 0;
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break;
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case AML_ONE_OP:
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ObjDesc->Integer.Value = 1;
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break;
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case AML_ONES_OP:
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ObjDesc->Integer.Value = ACPI_INTEGER_MAX;
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/* Truncate value if we are executing from a 32-bit ACPI table */
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AcpiExTruncateFor32bitTable (ObjDesc, WalkState);
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break;
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case AML_REVISION_OP:
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ObjDesc->Integer.Value = ACPI_CA_SUPPORT_LEVEL;
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break;
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}
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/*
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* Remove a reference from the original reference object
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* and put the new object in its place
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*/
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AcpiUtRemoveReference (StackDesc);
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*StackPtr = ObjDesc;
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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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AcpiUtRemoveReference (StackDesc);
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AcpiUtAddReference (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 dereference it
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Attempt to deref an Index to NULL pkg element Idx=%p\n",
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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 object */
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"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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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference object subtype %02X in %p\n",
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Opcode, StackDesc));
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Status = AE_AML_INTERNAL;
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break;
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} /* switch (Opcode) */
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break; /* case INTERNAL_TYPE_REFERENCE */
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/*
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* These cases may never happen here, but just in case..
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*/
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case ACPI_TYPE_BUFFER_FIELD:
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case INTERNAL_TYPE_REGION_FIELD:
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case INTERNAL_TYPE_BANK_FIELD:
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case INTERNAL_TYPE_INDEX_FIELD:
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead SourceDesc=%p Type=%X\n",
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StackDesc, StackDesc->Common.Type));
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Status = AcpiExReadDataFromField (StackDesc, &ObjDesc);
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*StackPtr = (void *) ObjDesc;
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break;
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default:
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break;
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}
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return_ACPI_STATUS (Status);
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}
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