1163 lines
32 KiB
C
1163 lines
32 KiB
C
/******************************************************************************
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*
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* Module Name: dswstate - Dispatcher parse tree walk management routines
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* $Revision: 36 $
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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, 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 __DSWSTATE_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 "acnamesp.h"
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#include "acinterp.h"
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#define _COMPONENT DISPATCHER
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MODULE_NAME ("dswstate")
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsResultStackClear
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*
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* PARAMETERS: WalkState - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Reset this walk's result stack pointers to zero, thus setting
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* the stack to zero.
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*
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******************************************************************************/
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ACPI_STATUS
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xxxAcpiDsResultStackClear (
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ACPI_WALK_STATE *WalkState)
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{
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/*
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WalkState->NumResults = 0;
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WalkState->CurrentResult = 0;
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*/
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsResultInsert
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*
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* PARAMETERS: Object - Object to push
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* WalkState - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Push an object onto this walk's result stack
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsResultInsert (
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void *Object,
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UINT32 Index,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_GENERIC_STATE *State;
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State = WalkState->Results;
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if (!State)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultInsert: No result object pushed! State=%p\n",
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WalkState));
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return (AE_NOT_EXIST);
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}
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if (Index >= OBJ_NUM_OPERANDS)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultInsert: Index out of range: %X Obj=%p State=%p Num=%X\n",
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Index, Object, WalkState, State->Results.NumResults));
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return (AE_BAD_PARAMETER);
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}
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if (!Object)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultInsert: Null Object! Index=%X Obj=%p State=%p Num=%X\n",
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Index, Object, WalkState, State->Results.NumResults));
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return (AE_BAD_PARAMETER);
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}
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State->Results.ObjDesc [Index] = Object;
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State->Results.NumResults++;
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DEBUG_PRINT (TRACE_EXEC,
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("DsResultStackPush: Obj=%p [%s] State=%p Num=%X Cur=%X\n",
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Object, Object ? AcpiCmGetTypeName (((ACPI_OPERAND_OBJECT *) Object)->Common.Type) : "NULL",
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WalkState, State->Results.NumResults, WalkState->CurrentResult));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsResultRemove
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*
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* PARAMETERS: Object - Where to return the popped object
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* WalkState - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop an object off the bottom of this walk's result stack. In
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* other words, this is a FIFO.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsResultRemove (
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ACPI_OPERAND_OBJECT **Object,
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UINT32 Index,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_GENERIC_STATE *State;
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State = WalkState->Results;
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if (!State)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultRemove: No result object pushed! State=%p\n",
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WalkState));
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return (AE_NOT_EXIST);
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}
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if (Index >= OBJ_NUM_OPERANDS)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultRemove: Index out of range: %X State=%p Num=%X\n",
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Index, WalkState, State->Results.NumResults));
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}
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/* Check for a valid result object */
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if (!State->Results.ObjDesc [Index])
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultStackRemove: Null operand! State=%p #Ops=%X, Index=%X\n",
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WalkState, State->Results.NumResults, Index));
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return (AE_AML_NO_OPERAND);
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}
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/* Remove the object */
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State->Results.NumResults--;
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*Object = State->Results.ObjDesc [Index];
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State->Results.ObjDesc [Index] = NULL;
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DEBUG_PRINT (TRACE_EXEC,
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("DsResultStackRemove: Obj=%p [%s] Index=%X State=%p Num=%X\n",
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*Object, (*Object) ? AcpiCmGetTypeName ((*Object)->Common.Type) : "NULL",
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Index, WalkState, State->Results.NumResults));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsResultPop
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*
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* PARAMETERS: Object - Where to return the popped object
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* WalkState - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop an object off the bottom of this walk's result stack. In
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* other words, this is a FIFO.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsResultPop (
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ACPI_OPERAND_OBJECT **Object,
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 Index;
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ACPI_GENERIC_STATE *State;
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State = WalkState->Results;
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if (!State)
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{
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return (AE_OK);
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}
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if (!State->Results.NumResults)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultPop: No result objects! State=%p\n",
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WalkState));
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return (AE_STACK_UNDERFLOW);
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}
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/* Remove top element */
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State->Results.NumResults--;
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for (Index = OBJ_NUM_OPERANDS; Index; Index--)
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{
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/* Check for a valid result object */
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if (State->Results.ObjDesc [Index -1])
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{
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*Object = State->Results.ObjDesc [Index -1];
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State->Results.ObjDesc [Index -1] = NULL;
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DEBUG_PRINT (TRACE_EXEC,
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("DsResultStackRemove: Obj=%p [%s] Index=%X State=%p Num=%X\n",
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*Object, (*Object) ? AcpiCmGetTypeName ((*Object)->Common.Type) : "NULL",
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Index -1, WalkState, State->Results.NumResults));
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return (AE_OK);
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}
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}
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultPop: No result objects! State=%p\n",
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WalkState));
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return (AE_STACK_UNDERFLOW);
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}
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/*******************************************************************************
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*
|
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* FUNCTION: AcpiDsResultPop
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*
|
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* PARAMETERS: Object - Where to return the popped object
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* WalkState - Current Walk state
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*
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* RETURN: Status
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*
|
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* DESCRIPTION: Pop an object off the bottom of this walk's result stack. In
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* other words, this is a FIFO.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsResultPopFromBottom (
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ACPI_OPERAND_OBJECT **Object,
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 Index;
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ACPI_GENERIC_STATE *State;
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|
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State = WalkState->Results;
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if (!State)
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{
|
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultPopFromBottom: Warning: No result object pushed! State=%p\n",
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WalkState));
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return (AE_NOT_EXIST);
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}
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|
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if (!State->Results.NumResults)
|
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{
|
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultPopFromBottom: No result objects! State=%p\n",
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WalkState));
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return (AE_STACK_UNDERFLOW);
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}
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/* Remove Bottom element */
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*Object = State->Results.ObjDesc [0];
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|
|
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/* Push entire stack down one element */
|
|
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for (Index = 0; Index < State->Results.NumResults; Index++)
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{
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State->Results.ObjDesc [Index] = State->Results.ObjDesc [Index + 1];
|
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}
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State->Results.NumResults--;
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|
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/* Check for a valid result object */
|
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|
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if (!*Object)
|
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{
|
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DEBUG_PRINT (ACPI_ERROR,
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("DsResultPopFromBottom: Null operand! State=%p #Ops=%X, Index=%X\n",
|
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WalkState, State->Results.NumResults, Index));
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return (AE_AML_NO_OPERAND);
|
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}
|
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|
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DEBUG_PRINT (TRACE_EXEC,
|
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("DsResultPopFromBottom: Obj=%p [%s], Results=%p State=%p\n",
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*Object, (*Object) ? AcpiCmGetTypeName ((*Object)->Common.Type) : "NULL",
|
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State, WalkState));
|
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|
|
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return (AE_OK);
|
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}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsResultPop
|
|
*
|
|
* PARAMETERS: Object - Where to return the popped object
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Pop an object off the bottom of this walk's result stack. In
|
|
* other words, this is a FIFO.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
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AcpiDsResultPush (
|
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ACPI_OPERAND_OBJECT *Object,
|
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ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
State = WalkState->Results;
|
|
if (!State)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
if (State->Results.NumResults == OBJ_NUM_OPERANDS)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsResultPush: Result stack overflow: Obj=%p State=%p Num=%X\n",
|
|
Object, WalkState, State->Results.NumResults));
|
|
return (AE_STACK_OVERFLOW);
|
|
}
|
|
|
|
if (!Object)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsResultPush: Null Object! Obj=%p State=%p Num=%X\n",
|
|
Object, WalkState, State->Results.NumResults));
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
|
|
State->Results.ObjDesc [State->Results.NumResults] = Object;
|
|
State->Results.NumResults++;
|
|
|
|
DEBUG_PRINT (TRACE_EXEC,
|
|
("DsResultPush: Obj=%p [%s] State=%p Num=%X Cur=%X\n",
|
|
Object, Object ? AcpiCmGetTypeName (((ACPI_OPERAND_OBJECT *) Object)->Common.Type) : "NULL",
|
|
WalkState, State->Results.NumResults, WalkState->CurrentResult));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsResultStackPush
|
|
*
|
|
* PARAMETERS: Object - Object to push
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsResultStackPush (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
State = AcpiCmCreateGenericState ();
|
|
if (!State)
|
|
{
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
AcpiCmPushGenericState (&WalkState->Results, State);
|
|
|
|
DEBUG_PRINT (TRACE_EXEC,
|
|
("DsResultStackPush: Results=%p State=%p\n",
|
|
State, WalkState));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsResultStackPop
|
|
*
|
|
* PARAMETERS: WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsResultStackPop (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
/* Check for stack underflow */
|
|
|
|
if (WalkState->Results == NULL)
|
|
{
|
|
DEBUG_PRINT (TRACE_EXEC,
|
|
("DsResultStackPop: Underflow - State=%p\n",
|
|
WalkState));
|
|
return (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
|
|
State = AcpiCmPopGenericState (&WalkState->Results);
|
|
|
|
DEBUG_PRINT (TRACE_EXEC,
|
|
("DsResultStackPop: Result=%p RemainingResults=%X State=%p\n",
|
|
State, State->Results.NumResults, WalkState));
|
|
|
|
AcpiCmDeleteGenericState (State);
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackDeleteAll
|
|
*
|
|
* PARAMETERS: WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear the object stack by deleting all objects that are on it.
|
|
* Should be used with great care, if at all!
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsObjStackDeleteAll (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
UINT32 i;
|
|
|
|
|
|
FUNCTION_TRACE_PTR ("DsObjStackDeleteAll", WalkState);
|
|
|
|
|
|
/* The stack size is configurable, but fixed */
|
|
|
|
for (i = 0; i < OBJ_NUM_OPERANDS; i++)
|
|
{
|
|
if (WalkState->Operands[i])
|
|
{
|
|
AcpiCmRemoveReference (WalkState->Operands[i]);
|
|
WalkState->Operands[i] = NULL;
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackPush
|
|
*
|
|
* PARAMETERS: Object - Object to push
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Push an object onto this walk's object/operand stack
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsObjStackPush (
|
|
void *Object,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
|
|
|
|
/* Check for stack overflow */
|
|
|
|
if (WalkState->NumOperands >= OBJ_NUM_OPERANDS)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsObjStackPush: overflow! Obj=%p State=%p #Ops=%X\n",
|
|
Object, WalkState, WalkState->NumOperands));
|
|
return (AE_STACK_OVERFLOW);
|
|
}
|
|
|
|
/* Put the object onto the stack */
|
|
|
|
WalkState->Operands [WalkState->NumOperands] = Object;
|
|
WalkState->NumOperands++;
|
|
|
|
DEBUG_PRINT (TRACE_EXEC, ("DsObjStackPush: Obj=%p [%s] State=%p #Ops=%X\n",
|
|
Object, AcpiCmGetTypeName (((ACPI_OPERAND_OBJECT *) Object)->Common.Type),
|
|
WalkState, WalkState->NumOperands));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackPopObject
|
|
*
|
|
* PARAMETERS: PopCount - Number of objects/entries to pop
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
|
|
* deleted by this routine.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsObjStackPopObject (
|
|
ACPI_OPERAND_OBJECT **Object,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
|
|
|
|
/* Check for stack underflow */
|
|
|
|
if (WalkState->NumOperands == 0)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsObjStackPop: Missing operand/stack empty! State=%p #Ops=%X\n",
|
|
WalkState, WalkState->NumOperands));
|
|
return (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
|
|
/* Pop the stack */
|
|
|
|
WalkState->NumOperands--;
|
|
|
|
/* Check for a valid operand */
|
|
|
|
if (!WalkState->Operands [WalkState->NumOperands])
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsObjStackPop: Null operand! State=%p #Ops=%X\n",
|
|
WalkState, WalkState->NumOperands));
|
|
return (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
/* Get operand and set stack entry to null */
|
|
|
|
*Object = WalkState->Operands [WalkState->NumOperands];
|
|
WalkState->Operands [WalkState->NumOperands] = NULL;
|
|
|
|
DEBUG_PRINT (TRACE_EXEC, ("DsObjStackPopObject: Obj=%p [%s] State=%p #Ops=%X\n",
|
|
*Object, AcpiCmGetTypeName ((*Object)->Common.Type),
|
|
WalkState, WalkState->NumOperands));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackPop
|
|
*
|
|
* PARAMETERS: PopCount - Number of objects/entries to pop
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
|
|
* deleted by this routine.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsObjStackPop (
|
|
UINT32 PopCount,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
UINT32 i;
|
|
|
|
|
|
for (i = 0; i < PopCount; i++)
|
|
{
|
|
/* Check for stack underflow */
|
|
|
|
if (WalkState->NumOperands == 0)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsObjStackPop: Underflow! Count=%X State=%p #Ops=%X\n",
|
|
PopCount, WalkState, WalkState->NumOperands));
|
|
return (AE_STACK_UNDERFLOW);
|
|
}
|
|
|
|
/* Just set the stack entry to null */
|
|
|
|
WalkState->NumOperands--;
|
|
WalkState->Operands [WalkState->NumOperands] = NULL;
|
|
}
|
|
|
|
DEBUG_PRINT (TRACE_EXEC, ("DsObjStackPop: Count=%X State=%p #Ops=%X\n",
|
|
PopCount, WalkState, WalkState->NumOperands));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackPopAndDelete
|
|
*
|
|
* PARAMETERS: PopCount - Number of objects/entries to pop
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Pop this walk's object stack and delete each object that is
|
|
* popped off.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsObjStackPopAndDelete (
|
|
UINT32 PopCount,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
UINT32 i;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
|
|
|
|
for (i = 0; i < PopCount; i++)
|
|
{
|
|
/* Check for stack underflow */
|
|
|
|
if (WalkState->NumOperands == 0)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsObjStackPop: Underflow! Count=%X State=%p #Ops=%X\n",
|
|
PopCount, WalkState, WalkState->NumOperands));
|
|
return (AE_STACK_UNDERFLOW);
|
|
}
|
|
|
|
/* Pop the stack and delete an object if present in this stack entry */
|
|
|
|
WalkState->NumOperands--;
|
|
ObjDesc = WalkState->Operands [WalkState->NumOperands];
|
|
if (ObjDesc)
|
|
{
|
|
AcpiCmRemoveReference (WalkState->Operands [WalkState->NumOperands]);
|
|
WalkState->Operands [WalkState->NumOperands] = NULL;
|
|
}
|
|
}
|
|
|
|
DEBUG_PRINT (TRACE_EXEC, ("DsObjStackPop: Count=%X State=%p #Ops=%X\n",
|
|
PopCount, WalkState, WalkState->NumOperands));
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsObjStackGetValue
|
|
*
|
|
* PARAMETERS: Index - Stack index whose value is desired. Based
|
|
* on the top of the stack (index=0 == top)
|
|
* WalkState - Current Walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Retrieve an object from this walk's object stack. Index must
|
|
* be within the range of the current stack pointer.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void *
|
|
AcpiDsObjStackGetValue (
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
|
|
FUNCTION_TRACE_PTR ("DsObjStackGetValue", WalkState);
|
|
|
|
|
|
/* Can't do it if the stack is empty */
|
|
|
|
if (WalkState->NumOperands == 0)
|
|
{
|
|
return_VALUE (NULL);
|
|
}
|
|
|
|
/* or if the index is past the top of the stack */
|
|
|
|
if (Index > (WalkState->NumOperands - (UINT32) 1))
|
|
{
|
|
return_VALUE (NULL);
|
|
}
|
|
|
|
|
|
return_PTR (WalkState->Operands[(NATIVE_UINT)(WalkState->NumOperands - 1) -
|
|
Index]);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsGetCurrentWalkState
|
|
*
|
|
* PARAMETERS: WalkList - Get current active state for this walk list
|
|
*
|
|
* RETURN: Pointer to the current walk state
|
|
*
|
|
* DESCRIPTION: Get the walk state that is at the head of the list (the "current"
|
|
* walk state.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_WALK_STATE *
|
|
AcpiDsGetCurrentWalkState (
|
|
ACPI_WALK_LIST *WalkList)
|
|
|
|
{
|
|
|
|
DEBUG_PRINT (TRACE_PARSE, ("DsGetCurrentWalkState, =%p\n", WalkList->WalkState));
|
|
|
|
if (!WalkList)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
return (WalkList->WalkState);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsPushWalkState
|
|
*
|
|
* PARAMETERS: WalkState - State to push
|
|
* WalkList - The list that owns the walk stack
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Place the WalkState at the head of the state list.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiDsPushWalkState (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_WALK_LIST *WalkList)
|
|
{
|
|
|
|
|
|
FUNCTION_TRACE ("DsPushWalkState");
|
|
|
|
|
|
WalkState->Next = WalkList->WalkState;
|
|
WalkList->WalkState = WalkState;
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsPopWalkState
|
|
*
|
|
* PARAMETERS: WalkList - The list that owns the walk stack
|
|
*
|
|
* RETURN: A WalkState object popped from the stack
|
|
*
|
|
* DESCRIPTION: Remove and return the walkstate object that is at the head of
|
|
* the walk stack for the given walk list. NULL indicates that
|
|
* the list is empty.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_WALK_STATE *
|
|
AcpiDsPopWalkState (
|
|
ACPI_WALK_LIST *WalkList)
|
|
{
|
|
ACPI_WALK_STATE *WalkState;
|
|
|
|
|
|
FUNCTION_TRACE ("DsPopWalkState");
|
|
|
|
|
|
WalkState = WalkList->WalkState;
|
|
|
|
if (WalkState)
|
|
{
|
|
/* Next walk state becomes the current walk state */
|
|
|
|
WalkList->WalkState = WalkState->Next;
|
|
|
|
/*
|
|
* Don't clear the NEXT field, this serves as an indicator
|
|
* that there is a parent WALK STATE
|
|
* WalkState->Next = NULL;
|
|
*/
|
|
}
|
|
|
|
return_PTR (WalkState);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsCreateWalkState
|
|
*
|
|
* PARAMETERS: Origin - Starting point for this walk
|
|
* WalkList - Owning walk list
|
|
*
|
|
* RETURN: Pointer to the new walk state.
|
|
*
|
|
* DESCRIPTION: Allocate and initialize a new walk state. The current walk state
|
|
* is set to this new state.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_WALK_STATE *
|
|
AcpiDsCreateWalkState (
|
|
ACPI_OWNER_ID OwnerId,
|
|
ACPI_PARSE_OBJECT *Origin,
|
|
ACPI_OPERAND_OBJECT *MthDesc,
|
|
ACPI_WALK_LIST *WalkList)
|
|
{
|
|
ACPI_WALK_STATE *WalkState;
|
|
|
|
|
|
FUNCTION_TRACE ("DsCreateWalkState");
|
|
|
|
|
|
AcpiCmAcquireMutex (ACPI_MTX_CACHES);
|
|
AcpiGbl_WalkStateCacheRequests++;
|
|
|
|
/* Check the cache first */
|
|
|
|
if (AcpiGbl_WalkStateCache)
|
|
{
|
|
/* There is an object available, use it */
|
|
|
|
WalkState = AcpiGbl_WalkStateCache;
|
|
AcpiGbl_WalkStateCache = WalkState->Next;
|
|
|
|
AcpiGbl_WalkStateCacheHits++;
|
|
AcpiGbl_WalkStateCacheDepth--;
|
|
|
|
DEBUG_PRINT (TRACE_EXEC, ("DsCreateWalkState: State %p from cache\n", WalkState));
|
|
|
|
AcpiCmReleaseMutex (ACPI_MTX_CACHES);
|
|
}
|
|
|
|
else
|
|
{
|
|
/* The cache is empty, create a new object */
|
|
|
|
/* Avoid deadlock with AcpiCmCallocate */
|
|
|
|
AcpiCmReleaseMutex (ACPI_MTX_CACHES);
|
|
|
|
WalkState = AcpiCmCallocate (sizeof (ACPI_WALK_STATE));
|
|
if (!WalkState)
|
|
{
|
|
return_VALUE (NULL);
|
|
}
|
|
}
|
|
|
|
WalkState->DataType = ACPI_DESC_TYPE_WALK;
|
|
WalkState->OwnerId = OwnerId;
|
|
WalkState->Origin = Origin;
|
|
WalkState->MethodDesc = MthDesc;
|
|
|
|
/* Init the method args/local */
|
|
|
|
#ifndef _ACPI_ASL_COMPILER
|
|
AcpiDsMethodDataInit (WalkState);
|
|
#endif
|
|
|
|
/* Put the new state at the head of the walk list */
|
|
|
|
AcpiDsPushWalkState (WalkState, WalkList);
|
|
|
|
return_PTR (WalkState);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsDeleteWalkState
|
|
*
|
|
* PARAMETERS: WalkState - State to delete
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Delete a walk state including all internal data structures
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiDsDeleteWalkState (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
FUNCTION_TRACE_PTR ("DsDeleteWalkState", WalkState);
|
|
|
|
|
|
if (!WalkState)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (WalkState->DataType != ACPI_DESC_TYPE_WALK)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("DsDeleteWalkState: **** %p not a valid walk state\n", WalkState));
|
|
return;
|
|
}
|
|
|
|
|
|
/* Always must free any linked control states */
|
|
|
|
while (WalkState->ControlState)
|
|
{
|
|
State = WalkState->ControlState;
|
|
WalkState->ControlState = State->Common.Next;
|
|
|
|
AcpiCmDeleteGenericState (State);
|
|
}
|
|
|
|
/* Always must free any linked parse states */
|
|
|
|
while (WalkState->ScopeInfo)
|
|
{
|
|
State = WalkState->ScopeInfo;
|
|
WalkState->ScopeInfo = State->Common.Next;
|
|
|
|
AcpiCmDeleteGenericState (State);
|
|
}
|
|
|
|
/* Always must free any stacked result states */
|
|
|
|
while (WalkState->Results)
|
|
{
|
|
State = WalkState->Results;
|
|
WalkState->Results = State->Common.Next;
|
|
|
|
AcpiCmDeleteGenericState (State);
|
|
}
|
|
|
|
|
|
/* If walk cache is full, just free this wallkstate object */
|
|
|
|
if (AcpiGbl_WalkStateCacheDepth >= MAX_WALK_CACHE_DEPTH)
|
|
{
|
|
AcpiCmFree (WalkState);
|
|
}
|
|
|
|
/* Otherwise put this object back into the cache */
|
|
|
|
else
|
|
{
|
|
AcpiCmAcquireMutex (ACPI_MTX_CACHES);
|
|
|
|
/* Clear the state */
|
|
|
|
MEMSET (WalkState, 0, sizeof (ACPI_WALK_STATE));
|
|
WalkState->DataType = ACPI_DESC_TYPE_WALK;
|
|
|
|
/* Put the object at the head of the global cache list */
|
|
|
|
WalkState->Next = AcpiGbl_WalkStateCache;
|
|
AcpiGbl_WalkStateCache = WalkState;
|
|
AcpiGbl_WalkStateCacheDepth++;
|
|
|
|
|
|
AcpiCmReleaseMutex (ACPI_MTX_CACHES);
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsDeleteWalkStateCache
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Purge the global state object cache. Used during subsystem
|
|
* termination.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiDsDeleteWalkStateCache (
|
|
void)
|
|
{
|
|
ACPI_WALK_STATE *Next;
|
|
|
|
|
|
FUNCTION_TRACE ("DsDeleteWalkStateCache");
|
|
|
|
|
|
/* Traverse the global cache list */
|
|
|
|
while (AcpiGbl_WalkStateCache)
|
|
{
|
|
/* Delete one cached state object */
|
|
|
|
Next = AcpiGbl_WalkStateCache->Next;
|
|
AcpiCmFree (AcpiGbl_WalkStateCache);
|
|
AcpiGbl_WalkStateCache = Next;
|
|
AcpiGbl_WalkStateCacheDepth--;
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|