/****************************************************************************** * * Module Name: dswscope - Scope stack manipulation * $Revision: 59 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2003, 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 "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 (%s)\n", AcpiUtGetTypeName (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_GENERIC_STATE *OldScopeInfo; 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 (!AcpiUtValidObjectType (Type)) { ACPI_REPORT_WARNING (("DsScopeStackPush: Invalid object type: 0x%X\n", Type)); } /* 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; 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: 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_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); }