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Diffstat (limited to 'sys/contrib/dev/acpica/dswstate.c')
| -rw-r--r-- | sys/contrib/dev/acpica/dswstate.c | 926 |
1 files changed, 0 insertions, 926 deletions
diff --git a/sys/contrib/dev/acpica/dswstate.c b/sys/contrib/dev/acpica/dswstate.c deleted file mode 100644 index f6f7bd2..0000000 --- a/sys/contrib/dev/acpica/dswstate.c +++ /dev/null @@ -1,926 +0,0 @@ -/****************************************************************************** - * - * Module Name: dswstate - Dispatcher parse tree walk management routines - * $Revision: 1.101 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. - * All rights reserved. - * - * 2. License - * - * 2.1. This is your license from Intel Corp. under its intellectual property - * rights. You may have additional license terms from the party that provided - * you this software, covering your right to use that party's intellectual - * property rights. - * - * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a - * copy of the source code appearing in this file ("Covered Code") an - * irrevocable, perpetual, worldwide license under Intel's copyrights in the - * base code distributed originally by Intel ("Original Intel Code") to copy, - * make derivatives, distribute, use and display any portion of the Covered - * Code in any form, with the right to sublicense such rights; and - * - * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent - * license (with the right to sublicense), under only those claims of Intel - * patents that are infringed by the Original Intel Code, to make, use, sell, - * offer to sell, and import the Covered Code and derivative works thereof - * solely to the minimum extent necessary to exercise the above copyright - * license, and in no event shall the patent license extend to any additions - * to or modifications of the Original Intel Code. No other license or right - * is granted directly or by implication, estoppel or otherwise; - * - * The above copyright and patent license is granted only if the following - * conditions are met: - * - * 3. Conditions - * - * 3.1. Redistribution of Source with Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification with rights to further distribute source must include - * the above Copyright Notice, the above License, this list of Conditions, - * and the following Disclaimer and Export Compliance provision. In addition, - * Licensee must cause all Covered Code to which Licensee contributes to - * contain a file documenting the changes Licensee made to create that Covered - * Code and the date of any change. Licensee must include in that file the - * documentation of any changes made by any predecessor Licensee. Licensee - * must include a prominent statement that the modification is derived, - * directly or indirectly, from Original Intel Code. - * - * 3.2. Redistribution of Source with no Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification without rights to further distribute source must - * include the following Disclaimer and Export Compliance provision in the - * documentation and/or other materials provided with distribution. In - * addition, Licensee may not authorize further sublicense of source of any - * portion of the Covered Code, and must include terms to the effect that the - * license from Licensee to its licensee is limited to the intellectual - * property embodied in the software Licensee provides to its licensee, and - * not to intellectual property embodied in modifications its licensee may - * make. - * - * 3.3. Redistribution of Executable. Redistribution in executable form of any - * substantial portion of the Covered Code or modification must reproduce the - * above Copyright Notice, and the following Disclaimer and Export Compliance - * provision in the documentation and/or other materials provided with the - * distribution. - * - * 3.4. Intel retains all right, title, and interest in and to the Original - * Intel Code. - * - * 3.5. Neither the name Intel nor any other trademark owned or controlled by - * Intel shall be used in advertising or otherwise to promote the sale, use or - * other dealings in products derived from or relating to the Covered Code - * without prior written authorization from Intel. - * - * 4. Disclaimer and Export Compliance - * - * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED - * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE - * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, - * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY - * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY - * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A - * PARTICULAR PURPOSE. - * - * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES - * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR - * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, - * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY - * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL - * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS - * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY - * LIMITED REMEDY. - * - * 4.3. Licensee shall not export, either directly or indirectly, any of this - * software or system incorporating such software without first obtaining any - * required license or other approval from the U. S. Department of Commerce or - * any other agency or department of the United States Government. In the - * event Licensee exports any such software from the United States or - * re-exports any such software from a foreign destination, Licensee shall - * ensure that the distribution and export/re-export of the software is in - * compliance with all laws, regulations, orders, or other restrictions of the - * U.S. Export Administration Regulations. Licensee agrees that neither it nor - * any of its subsidiaries will export/re-export any technical data, process, - * software, or service, directly or indirectly, to any country for which the - * United States government or any agency thereof requires an export license, - * other governmental approval, or letter of assurance, without first obtaining - * such license, approval or letter. - * - *****************************************************************************/ - - -#define __DSWSTATE_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acparser.h> -#include <contrib/dev/acpica/acdispat.h> -#include <contrib/dev/acpica/acnamesp.h> - -#define _COMPONENT ACPI_DISPATCHER - ACPI_MODULE_NAME ("dswstate") - -/* Local prototypes */ - -static ACPI_STATUS -AcpiDsResultStackPush ( - ACPI_WALK_STATE *WalkState); - -static ACPI_STATUS -AcpiDsResultStackPop ( - ACPI_WALK_STATE *WalkState); - - -/******************************************************************************* - * - * FUNCTION: AcpiDsResultPop - * - * PARAMETERS: Object - Where to return the popped object - * WalkState - Current Walk state - * - * RETURN: Status - * - * DESCRIPTION: Pop an object off the top of this walk's result stack - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsResultPop ( - ACPI_OPERAND_OBJECT **Object, - ACPI_WALK_STATE *WalkState) -{ - ACPI_NATIVE_UINT Index; - ACPI_GENERIC_STATE *State; - ACPI_STATUS Status; - - - ACPI_FUNCTION_NAME (DsResultPop); - - - State = WalkState->Results; - - /* Incorrect state of result stack */ - - if (State && !WalkState->ResultCount) - { - ACPI_ERROR ((AE_INFO, "No results on result stack")); - return (AE_AML_INTERNAL); - } - - if (!State && WalkState->ResultCount) - { - ACPI_ERROR ((AE_INFO, "No result state for result stack")); - return (AE_AML_INTERNAL); - } - - /* Empty result stack */ - - if (!State) - { - ACPI_ERROR ((AE_INFO, "Result stack is empty! State=%p", WalkState)); - return (AE_AML_NO_RETURN_VALUE); - } - - /* Return object of the top element and clean that top element result stack */ - - WalkState->ResultCount--; - Index = WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM; - - *Object = State->Results.ObjDesc [Index]; - if (!*Object) - { - ACPI_ERROR ((AE_INFO, "No result objects on result stack, State=%p", - WalkState)); - return (AE_AML_NO_RETURN_VALUE); - } - - State->Results.ObjDesc [Index] = NULL; - if (Index == 0) - { - Status = AcpiDsResultStackPop (WalkState); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - } - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, - "Obj=%p [%s] Index=%X State=%p Num=%X\n", *Object, - AcpiUtGetObjectTypeName (*Object), - (UINT32) Index, WalkState, WalkState->ResultCount)); - - return (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsResultPush - * - * PARAMETERS: Object - Where to return the popped object - * WalkState - Current Walk state - * - * RETURN: Status - * - * DESCRIPTION: Push an object onto the current result stack - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsResultPush ( - ACPI_OPERAND_OBJECT *Object, - ACPI_WALK_STATE *WalkState) -{ - ACPI_GENERIC_STATE *State; - ACPI_STATUS Status; - ACPI_NATIVE_UINT Index; - - - ACPI_FUNCTION_NAME (DsResultPush); - - - if (WalkState->ResultCount > WalkState->ResultSize) - { - ACPI_ERROR ((AE_INFO, "Result stack is full")); - return (AE_AML_INTERNAL); - } - else if (WalkState->ResultCount == WalkState->ResultSize) - { - /* Extend the result stack */ - - Status = AcpiDsResultStackPush (WalkState); - if (ACPI_FAILURE (Status)) - { - ACPI_ERROR ((AE_INFO, "Failed to extend the result stack")); - return (Status); - } - } - - if (!(WalkState->ResultCount < WalkState->ResultSize)) - { - ACPI_ERROR ((AE_INFO, "No free elements in result stack")); - return (AE_AML_INTERNAL); - } - - State = WalkState->Results; - if (!State) - { - ACPI_ERROR ((AE_INFO, "No result stack frame during push")); - return (AE_AML_INTERNAL); - } - - if (!Object) - { - ACPI_ERROR ((AE_INFO, - "Null Object! Obj=%p State=%p Num=%X", - Object, WalkState, WalkState->ResultCount)); - return (AE_BAD_PARAMETER); - } - - /* Assign the address of object to the top free element of result stack */ - - Index = WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM; - State->Results.ObjDesc [Index] = Object; - WalkState->ResultCount++; - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n", - Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object), - WalkState, WalkState->ResultCount, WalkState->CurrentResult)); - - return (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsResultStackPush - * - * PARAMETERS: WalkState - Current Walk state - * - * RETURN: Status - * - * DESCRIPTION: Push an object onto the WalkState result stack - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiDsResultStackPush ( - ACPI_WALK_STATE *WalkState) -{ - ACPI_GENERIC_STATE *State; - - - ACPI_FUNCTION_NAME (DsResultStackPush); - - - /* Check for stack overflow */ - - if ((WalkState->ResultSize + ACPI_RESULTS_FRAME_OBJ_NUM) > - ACPI_RESULTS_OBJ_NUM_MAX) - { - ACPI_ERROR ((AE_INFO, "Result stack overflow: State=%p Num=%X", - WalkState, WalkState->ResultSize)); - return (AE_STACK_OVERFLOW); - } - - State = AcpiUtCreateGenericState (); - if (!State) - { - return (AE_NO_MEMORY); - } - - State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RESULT; - AcpiUtPushGenericState (&WalkState->Results, State); - - /* Increase the length of the result stack by the length of frame */ - - WalkState->ResultSize += ACPI_RESULTS_FRAME_OBJ_NUM; - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Results=%p State=%p\n", - State, WalkState)); - - return (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsResultStackPop - * - * PARAMETERS: WalkState - Current Walk state - * - * RETURN: Status - * - * DESCRIPTION: Pop an object off of the WalkState result stack - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiDsResultStackPop ( - ACPI_WALK_STATE *WalkState) -{ - ACPI_GENERIC_STATE *State; - - - ACPI_FUNCTION_NAME (DsResultStackPop); - - - /* Check for stack underflow */ - - if (WalkState->Results == NULL) - { - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Result stack underflow - State=%p\n", - WalkState)); - return (AE_AML_NO_OPERAND); - } - - if (WalkState->ResultSize < ACPI_RESULTS_FRAME_OBJ_NUM) - { - ACPI_ERROR ((AE_INFO, "Insufficient result stack size")); - return (AE_AML_INTERNAL); - } - - State = AcpiUtPopGenericState (&WalkState->Results); - AcpiUtDeleteGenericState (State); - - /* Decrease the length of result stack by the length of frame */ - - WalkState->ResultSize -= ACPI_RESULTS_FRAME_OBJ_NUM; - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, - "Result=%p RemainingResults=%X State=%p\n", - State, WalkState->ResultCount, WalkState)); - - return (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) -{ - ACPI_FUNCTION_NAME (DsObjStackPush); - - - /* Check for stack overflow */ - - if (WalkState->NumOperands >= ACPI_OBJ_NUM_OPERANDS) - { - ACPI_ERROR ((AE_INFO, - "Object stack overflow! Obj=%p State=%p #Ops=%X", - Object, WalkState, WalkState->NumOperands)); - return (AE_STACK_OVERFLOW); - } - - /* Put the object onto the stack */ - - WalkState->Operands [WalkState->OperandIndex] = Object; - WalkState->NumOperands++; - - /* For the usual order of filling the operand stack */ - - WalkState->OperandIndex++; - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n", - Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object), - 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; - - - ACPI_FUNCTION_NAME (DsObjStackPop); - - - for (i = 0; i < PopCount; i++) - { - /* Check for stack underflow */ - - if (WalkState->NumOperands == 0) - { - ACPI_ERROR ((AE_INFO, - "Object stack underflow! Count=%X State=%p #Ops=%X", - PopCount, WalkState, WalkState->NumOperands)); - return (AE_STACK_UNDERFLOW); - } - - /* Just set the stack entry to null */ - - WalkState->NumOperands--; - WalkState->Operands [WalkState->NumOperands] = NULL; - } - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "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. - * - ******************************************************************************/ - -void -AcpiDsObjStackPopAndDelete ( - UINT32 PopCount, - ACPI_WALK_STATE *WalkState) -{ - UINT32 i; - ACPI_OPERAND_OBJECT *ObjDesc; - - - ACPI_FUNCTION_NAME (DsObjStackPopAndDelete); - - - if (PopCount == 0) - { - return; - } - - for (i = (PopCount - 1); i >= 0; i--) - { - if (WalkState->NumOperands == 0) - { - return; - } - - /* Pop the stack and delete an object if present in this stack entry */ - - WalkState->NumOperands--; - ObjDesc = WalkState->Operands [i]; - if (ObjDesc) - { - AcpiUtRemoveReference (WalkState->Operands [i]); - WalkState->Operands [i] = NULL; - } - } - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%X\n", - PopCount, WalkState, WalkState->NumOperands)); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsGetCurrentWalkState - * - * PARAMETERS: Thread - Get current active state for this Thread - * - * 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_THREAD_STATE *Thread) -{ - ACPI_FUNCTION_NAME (DsGetCurrentWalkState); - - - if (!Thread) - { - return (NULL); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Current WalkState %p\n", - Thread->WalkStateList)); - - return (Thread->WalkStateList); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsPushWalkState - * - * PARAMETERS: WalkState - State to push - * Thread - Thread state object - * - * RETURN: None - * - * DESCRIPTION: Place the Thread state at the head of the state list - * - ******************************************************************************/ - -void -AcpiDsPushWalkState ( - ACPI_WALK_STATE *WalkState, - ACPI_THREAD_STATE *Thread) -{ - ACPI_FUNCTION_TRACE (DsPushWalkState); - - - WalkState->Next = Thread->WalkStateList; - Thread->WalkStateList = WalkState; - - return_VOID; -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsPopWalkState - * - * PARAMETERS: Thread - Current thread state - * - * RETURN: A WalkState object popped from the thread's 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_THREAD_STATE *Thread) -{ - ACPI_WALK_STATE *WalkState; - - - ACPI_FUNCTION_TRACE (DsPopWalkState); - - - WalkState = Thread->WalkStateList; - - if (WalkState) - { - /* Next walk state becomes the current walk state */ - - Thread->WalkStateList = WalkState->Next; - - /* - * Don't clear the NEXT field, this serves as an indicator - * that there is a parent WALK STATE - * Do Not: WalkState->Next = NULL; - */ - } - - return_PTR (WalkState); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsCreateWalkState - * - * PARAMETERS: OwnerId - ID for object creation - * Origin - Starting point for this walk - * MethodDesc - Method object - * Thread - Current thread state - * - * 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 *MethodDesc, - ACPI_THREAD_STATE *Thread) -{ - ACPI_WALK_STATE *WalkState; - - - ACPI_FUNCTION_TRACE (DsCreateWalkState); - - - WalkState = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_WALK_STATE)); - if (!WalkState) - { - return_PTR (NULL); - } - - WalkState->DescriptorType = ACPI_DESC_TYPE_WALK; - WalkState->MethodDesc = MethodDesc; - WalkState->OwnerId = OwnerId; - WalkState->Origin = Origin; - WalkState->Thread = Thread; - - WalkState->ParserState.StartOp = Origin; - - /* Init the method args/local */ - -#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) - AcpiDsMethodDataInit (WalkState); -#endif - - /* Put the new state at the head of the walk list */ - - if (Thread) - { - AcpiDsPushWalkState (WalkState, Thread); - } - - return_PTR (WalkState); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsInitAmlWalk - * - * PARAMETERS: WalkState - New state to be initialized - * Op - Current parse op - * MethodNode - Control method NS node, if any - * AmlStart - Start of AML - * AmlLength - Length of AML - * Info - Method info block (params, etc.) - * PassNumber - 1, 2, or 3 - * - * RETURN: Status - * - * DESCRIPTION: Initialize a walk state for a pass 1 or 2 parse tree walk - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsInitAmlWalk ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op, - ACPI_NAMESPACE_NODE *MethodNode, - UINT8 *AmlStart, - UINT32 AmlLength, - ACPI_EVALUATE_INFO *Info, - UINT8 PassNumber) -{ - ACPI_STATUS Status; - ACPI_PARSE_STATE *ParserState = &WalkState->ParserState; - ACPI_PARSE_OBJECT *ExtraOp; - - - ACPI_FUNCTION_TRACE (DsInitAmlWalk); - - - WalkState->ParserState.Aml = - WalkState->ParserState.AmlStart = AmlStart; - WalkState->ParserState.AmlEnd = - WalkState->ParserState.PkgEnd = AmlStart + AmlLength; - - /* The NextOp of the NextWalk will be the beginning of the method */ - - WalkState->NextOp = NULL; - WalkState->PassNumber = PassNumber; - - if (Info) - { - if (Info->ParameterType == ACPI_PARAM_GPE) - { - WalkState->GpeEventInfo = - ACPI_CAST_PTR (ACPI_GPE_EVENT_INFO, Info->Parameters); - } - else - { - WalkState->Params = Info->Parameters; - WalkState->CallerReturnDesc = &Info->ReturnObject; - } - } - - Status = AcpiPsInitScope (&WalkState->ParserState, Op); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - if (MethodNode) - { - WalkState->ParserState.StartNode = MethodNode; - WalkState->WalkType = ACPI_WALK_METHOD; - WalkState->MethodNode = MethodNode; - WalkState->MethodDesc = AcpiNsGetAttachedObject (MethodNode); - - /* Push start scope on scope stack and make it current */ - - Status = AcpiDsScopeStackPush (MethodNode, ACPI_TYPE_METHOD, WalkState); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Init the method arguments */ - - Status = AcpiDsMethodDataInitArgs (WalkState->Params, - ACPI_METHOD_NUM_ARGS, WalkState); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - } - else - { - /* - * Setup the current scope. - * Find a Named Op that has a namespace node associated with it. - * search upwards from this Op. Current scope is the first - * Op with a namespace node. - */ - ExtraOp = ParserState->StartOp; - while (ExtraOp && !ExtraOp->Common.Node) - { - ExtraOp = ExtraOp->Common.Parent; - } - - if (!ExtraOp) - { - ParserState->StartNode = NULL; - } - else - { - ParserState->StartNode = ExtraOp->Common.Node; - } - - if (ParserState->StartNode) - { - /* Push start scope on scope stack and make it current */ - - Status = AcpiDsScopeStackPush (ParserState->StartNode, - ParserState->StartNode->Type, WalkState); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - } - } - - Status = AcpiDsInitCallbacks (WalkState, PassNumber); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * 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; - - - ACPI_FUNCTION_TRACE_PTR (DsDeleteWalkState, WalkState); - - - if (!WalkState) - { - return; - } - - if (WalkState->DescriptorType != ACPI_DESC_TYPE_WALK) - { - ACPI_ERROR ((AE_INFO, "%p is not a valid walk state", - WalkState)); - return; - } - - /* There should not be any open scopes */ - - if (WalkState->ParserState.Scope) - { - ACPI_ERROR ((AE_INFO, "%p walk still has a scope list", - WalkState)); - AcpiPsCleanupScope (&WalkState->ParserState); - } - - /* Always must free any linked control states */ - - while (WalkState->ControlState) - { - State = WalkState->ControlState; - WalkState->ControlState = State->Common.Next; - - AcpiUtDeleteGenericState (State); - } - - /* Always must free any linked parse states */ - - while (WalkState->ScopeInfo) - { - State = WalkState->ScopeInfo; - WalkState->ScopeInfo = State->Common.Next; - - AcpiUtDeleteGenericState (State); - } - - /* Always must free any stacked result states */ - - while (WalkState->Results) - { - State = WalkState->Results; - WalkState->Results = State->Common.Next; - - AcpiUtDeleteGenericState (State); - } - - ACPI_FREE (WalkState); - return_VOID; -} - - |
