1 /******************************************************************************
3 * Module Name: dswscope - Scope stack manipulation
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
117 #define __DSWSCOPE_C__
120 #include "acdispat.h"
123 #define _COMPONENT ACPI_DISPATCHER
124 ACPI_MODULE_NAME ("dswscope")
127 /****************************************************************************
129 * FUNCTION: AcpiDsScopeStackClear
131 * PARAMETERS: WalkState - Current state
135 * DESCRIPTION: Pop (and free) everything on the scope stack except the
136 * root scope object (which remains at the stack top.)
138 ***************************************************************************/
141 AcpiDsScopeStackClear (
142 ACPI_WALK_STATE
*WalkState
)
144 ACPI_GENERIC_STATE
*ScopeInfo
;
146 ACPI_FUNCTION_NAME (DsScopeStackClear
);
149 while (WalkState
->ScopeInfo
)
151 /* Pop a scope off the stack */
153 ScopeInfo
= WalkState
->ScopeInfo
;
154 WalkState
->ScopeInfo
= ScopeInfo
->Scope
.Next
;
156 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC
,
157 "Popped object type (%s)\n",
158 AcpiUtGetTypeName (ScopeInfo
->Common
.Value
)));
159 AcpiUtDeleteGenericState (ScopeInfo
);
164 /****************************************************************************
166 * FUNCTION: AcpiDsScopeStackPush
168 * PARAMETERS: Node - Name to be made current
169 * Type - Type of frame being pushed
170 * WalkState - Current state
174 * DESCRIPTION: Push the current scope on the scope stack, and make the
175 * passed Node current.
177 ***************************************************************************/
180 AcpiDsScopeStackPush (
181 ACPI_NAMESPACE_NODE
*Node
,
182 ACPI_OBJECT_TYPE Type
,
183 ACPI_WALK_STATE
*WalkState
)
185 ACPI_GENERIC_STATE
*ScopeInfo
;
186 ACPI_GENERIC_STATE
*OldScopeInfo
;
189 ACPI_FUNCTION_TRACE (DsScopeStackPush
);
196 ACPI_ERROR ((AE_INFO
, "Null scope parameter"));
197 return_ACPI_STATUS (AE_BAD_PARAMETER
);
200 /* Make sure object type is valid */
202 if (!AcpiUtValidObjectType (Type
))
204 ACPI_WARNING ((AE_INFO
,
205 "Invalid object type: 0x%X", Type
));
208 /* Allocate a new scope object */
210 ScopeInfo
= AcpiUtCreateGenericState ();
213 return_ACPI_STATUS (AE_NO_MEMORY
);
216 /* Init new scope object */
218 ScopeInfo
->Common
.DescriptorType
= ACPI_DESC_TYPE_STATE_WSCOPE
;
219 ScopeInfo
->Scope
.Node
= Node
;
220 ScopeInfo
->Common
.Value
= (UINT16
) Type
;
222 WalkState
->ScopeDepth
++;
224 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC
,
225 "[%.2d] Pushed scope ", (UINT32
) WalkState
->ScopeDepth
));
227 OldScopeInfo
= WalkState
->ScopeInfo
;
230 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC
,
232 AcpiUtGetNodeName (OldScopeInfo
->Scope
.Node
),
233 AcpiUtGetTypeName (OldScopeInfo
->Common
.Value
)));
237 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC
,
238 "[\\___] (%s)", "ROOT"));
241 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC
,
242 ", New scope -> [%4.4s] (%s)\n",
243 AcpiUtGetNodeName (ScopeInfo
->Scope
.Node
),
244 AcpiUtGetTypeName (ScopeInfo
->Common
.Value
)));
246 /* Push new scope object onto stack */
248 AcpiUtPushGenericState (&WalkState
->ScopeInfo
, ScopeInfo
);
249 return_ACPI_STATUS (AE_OK
);
253 /****************************************************************************
255 * FUNCTION: AcpiDsScopeStackPop
257 * PARAMETERS: WalkState - Current state
261 * DESCRIPTION: Pop the scope stack once.
263 ***************************************************************************/
266 AcpiDsScopeStackPop (
267 ACPI_WALK_STATE
*WalkState
)
269 ACPI_GENERIC_STATE
*ScopeInfo
;
270 ACPI_GENERIC_STATE
*NewScopeInfo
;
273 ACPI_FUNCTION_TRACE (DsScopeStackPop
);
277 * Pop scope info object off the stack.
279 ScopeInfo
= AcpiUtPopGenericState (&WalkState
->ScopeInfo
);
282 return_ACPI_STATUS (AE_STACK_UNDERFLOW
);
285 WalkState
->ScopeDepth
--;
287 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC
,
288 "[%.2d] Popped scope [%4.4s] (%s), New scope -> ",
289 (UINT32
) WalkState
->ScopeDepth
,
290 AcpiUtGetNodeName (ScopeInfo
->Scope
.Node
),
291 AcpiUtGetTypeName (ScopeInfo
->Common
.Value
)));
293 NewScopeInfo
= WalkState
->ScopeInfo
;
296 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC
,
298 AcpiUtGetNodeName (NewScopeInfo
->Scope
.Node
),
299 AcpiUtGetTypeName (NewScopeInfo
->Common
.Value
)));
303 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC
,
304 "[\\___] (ROOT)\n"));
307 AcpiUtDeleteGenericState (ScopeInfo
);
308 return_ACPI_STATUS (AE_OK
);