/******************************************************************************
*
* Module Name: dswscope - Scope stack manipulation
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, 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 __DSWSCOPE_C__
#include "acpi.h"
#include "accommon.h"
#include "acdispat.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dswscope")
/****************************************************************************
*
* FUNCTION: AcpiDsScopeStackClear
*
* PARAMETERS: WalkState - Current state
*
* RETURN: None
*
* DESCRIPTION: Pop (and free) everything on the scope stack except the
* root scope object (which remains at the stack top.)
*
***************************************************************************/
void
AcpiDsScopeStackClear (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_FUNCTION_NAME (DsScopeStackClear);
while (WalkState->ScopeInfo)
{
/* Pop a scope off the stack */
ScopeInfo = WalkState->ScopeInfo;
WalkState->ScopeInfo = ScopeInfo->Scope.Next;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Popped object type (%s)\n",
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
AcpiUtDeleteGenericState (ScopeInfo);
}
}
/****************************************************************************
*
* FUNCTION: AcpiDsScopeStackPush
*
* PARAMETERS: Node - Name to be made current
* Type - Type of frame being pushed
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Push the current scope on the scope stack, and make the
* passed Node current.
*
***************************************************************************/
ACPI_STATUS
AcpiDsScopeStackPush (
ACPI_NAMESPACE_NODE *Node,
ACPI_OBJECT_TYPE Type,
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_GENERIC_STATE *OldScopeInfo;
ACPI_FUNCTION_TRACE (DsScopeStackPush);
if (!Node)
{
/* Invalid scope */
ACPI_ERROR ((AE_INFO, "Null scope parameter"));
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Make sure object type is valid */
if (!AcpiUtValidObjectType (Type))
{
ACPI_WARNING ((AE_INFO,
"Invalid object type: 0x%X", Type));
}
/* Allocate a new scope object */
ScopeInfo = AcpiUtCreateGenericState ();
if (!ScopeInfo)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Init new scope object */
ScopeInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_WSCOPE;
ScopeInfo->Scope.Node = Node;
ScopeInfo->Common.Value = (UINT16) Type;
WalkState->ScopeDepth++;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth));
OldScopeInfo = WalkState->ScopeInfo;
if (OldScopeInfo)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[%4.4s] (%s)",
AcpiUtGetNodeName (OldScopeInfo->Scope.Node),
AcpiUtGetTypeName (OldScopeInfo->Common.Value)));
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[\\___] (%s)", "ROOT"));
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
", New scope -> [%4.4s] (%s)\n",
AcpiUtGetNodeName (ScopeInfo->Scope.Node),
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
/* Push new scope object onto stack */
AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
return_ACPI_STATUS (AE_OK);
}
/****************************************************************************
*
* FUNCTION: AcpiDsScopeStackPop
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Pop the scope stack once.
*
***************************************************************************/
ACPI_STATUS
AcpiDsScopeStackPop (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_GENERIC_STATE *NewScopeInfo;
ACPI_FUNCTION_TRACE (DsScopeStackPop);
/*
* Pop scope info object off the stack.
*/
ScopeInfo = AcpiUtPopGenericState (&WalkState->ScopeInfo);
if (!ScopeInfo)
{
return_ACPI_STATUS (AE_STACK_UNDERFLOW);
}
WalkState->ScopeDepth--;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%.2d] Popped scope [%4.4s] (%s), New scope -> ",
(UINT32) WalkState->ScopeDepth,
AcpiUtGetNodeName (ScopeInfo->Scope.Node),
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
NewScopeInfo = WalkState->ScopeInfo;
if (NewScopeInfo)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[%4.4s] (%s)\n",
AcpiUtGetNodeName (NewScopeInfo->Scope.Node),
AcpiUtGetTypeName (NewScopeInfo->Common.Value)));
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[\\___] (ROOT)\n"));
}
AcpiUtDeleteGenericState (ScopeInfo);
return_ACPI_STATUS (AE_OK);
}