272 lines
10 KiB
C
272 lines
10 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: dswscope - Scope stack manipulation
|
|
* $Revision: 52 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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 "acinterp.h"
|
|
#include "acdispat.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
ACPI_MODULE_NAME ("dswscope")
|
|
|
|
|
|
#define STACK_POP(head) head
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsScopeStackClear
|
|
*
|
|
* PARAMETERS: 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 %X\n", ScopeInfo->Common.Value));
|
|
AcpiUtDeleteGenericState (ScopeInfo);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsScopeStackPush
|
|
*
|
|
* PARAMETERS: *Node, - Name to be made current
|
|
* Type, - Type of frame being pushed
|
|
*
|
|
* 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_FUNCTION_TRACE ("DsScopeStackPush");
|
|
|
|
|
|
if (!Node)
|
|
{
|
|
/* Invalid scope */
|
|
|
|
ACPI_REPORT_ERROR (("DsScopeStackPush: null scope passed\n"));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Make sure object type is valid */
|
|
|
|
if (!AcpiExValidateObjectType (Type))
|
|
{
|
|
ACPI_REPORT_WARNING (("DsScopeStackPush: type code out of range\n"));
|
|
}
|
|
|
|
|
|
/* Allocate a new scope object */
|
|
|
|
ScopeInfo = AcpiUtCreateGenericState ();
|
|
if (!ScopeInfo)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Init new scope object */
|
|
|
|
ScopeInfo->Common.DataType = ACPI_DESC_TYPE_STATE_WSCOPE;
|
|
ScopeInfo->Scope.Node = Node;
|
|
ScopeInfo->Common.Value = (UINT16) Type;
|
|
|
|
/* Push new scope object onto stack */
|
|
|
|
AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsScopeStackPop
|
|
*
|
|
* PARAMETERS: Type - The type of frame to be found
|
|
*
|
|
* DESCRIPTION: Pop the scope stack until a frame of the requested type
|
|
* is found.
|
|
*
|
|
* RETURN: Count of frames popped. If no frame of the requested type
|
|
* was found, the count is returned as a negative number and
|
|
* the scope stack is emptied (which sets the current scope
|
|
* to the root). If the scope stack was empty at entry, the
|
|
* function is a no-op and returns 0.
|
|
*
|
|
***************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsScopeStackPop (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_GENERIC_STATE *ScopeInfo;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("DsScopeStackPop");
|
|
|
|
|
|
/*
|
|
* Pop scope info object off the stack.
|
|
*/
|
|
ScopeInfo = AcpiUtPopGenericState (&WalkState->ScopeInfo);
|
|
if (!ScopeInfo)
|
|
{
|
|
return_ACPI_STATUS (AE_STACK_UNDERFLOW);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Popped object type %X\n", ScopeInfo->Common.Value));
|
|
|
|
AcpiUtDeleteGenericState (ScopeInfo);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|