1bc36eafdSMike Gerdts /******************************************************************************
2bc36eafdSMike Gerdts *
3bc36eafdSMike Gerdts * Module Name: psscope - Parser scope stack management routines
4bc36eafdSMike Gerdts *
5bc36eafdSMike Gerdts *****************************************************************************/
6bc36eafdSMike Gerdts
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12bc36eafdSMike Gerdts * All rights reserved.
13bc36eafdSMike Gerdts *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
119bc36eafdSMike Gerdts * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts * are met:
122bc36eafdSMike Gerdts * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts * notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts * without modification.
125bc36eafdSMike Gerdts * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts * substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts * ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts * including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts * binary redistribution.
130bc36eafdSMike Gerdts * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts * of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts * from this software without specific prior written permission.
133bc36eafdSMike Gerdts *
134*35786f68SRobert Mustacchi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135*35786f68SRobert Mustacchi * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137*35786f68SRobert Mustacchi * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147bc36eafdSMike Gerdts * GNU General Public License ("GPL") version 2 as published by the Free
148bc36eafdSMike Gerdts * Software Foundation.
149bc36eafdSMike Gerdts *
150*35786f68SRobert Mustacchi *****************************************************************************/
151bc36eafdSMike Gerdts
152bc36eafdSMike Gerdts #include "acpi.h"
153bc36eafdSMike Gerdts #include "accommon.h"
154bc36eafdSMike Gerdts #include "acparser.h"
155bc36eafdSMike Gerdts
156bc36eafdSMike Gerdts #define _COMPONENT ACPI_PARSER
157bc36eafdSMike Gerdts ACPI_MODULE_NAME ("psscope")
158bc36eafdSMike Gerdts
159bc36eafdSMike Gerdts
160bc36eafdSMike Gerdts /*******************************************************************************
161bc36eafdSMike Gerdts *
162bc36eafdSMike Gerdts * FUNCTION: AcpiPsGetParentScope
163bc36eafdSMike Gerdts *
164bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
165bc36eafdSMike Gerdts *
166bc36eafdSMike Gerdts * RETURN: Pointer to an Op object
167bc36eafdSMike Gerdts *
168bc36eafdSMike Gerdts * DESCRIPTION: Get parent of current op being parsed
169bc36eafdSMike Gerdts *
170bc36eafdSMike Gerdts ******************************************************************************/
171bc36eafdSMike Gerdts
172bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *
AcpiPsGetParentScope(ACPI_PARSE_STATE * ParserState)173bc36eafdSMike Gerdts AcpiPsGetParentScope (
174bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState)
175bc36eafdSMike Gerdts {
176bc36eafdSMike Gerdts
177bc36eafdSMike Gerdts return (ParserState->Scope->ParseScope.Op);
178bc36eafdSMike Gerdts }
179bc36eafdSMike Gerdts
180bc36eafdSMike Gerdts
181bc36eafdSMike Gerdts /*******************************************************************************
182bc36eafdSMike Gerdts *
183bc36eafdSMike Gerdts * FUNCTION: AcpiPsHasCompletedScope
184bc36eafdSMike Gerdts *
185bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
186bc36eafdSMike Gerdts *
187bc36eafdSMike Gerdts * RETURN: Boolean, TRUE = scope completed.
188bc36eafdSMike Gerdts *
189bc36eafdSMike Gerdts * DESCRIPTION: Is parsing of current argument complete? Determined by
190bc36eafdSMike Gerdts * 1) AML pointer is at or beyond the end of the scope
191bc36eafdSMike Gerdts * 2) The scope argument count has reached zero.
192bc36eafdSMike Gerdts *
193bc36eafdSMike Gerdts ******************************************************************************/
194bc36eafdSMike Gerdts
195bc36eafdSMike Gerdts BOOLEAN
AcpiPsHasCompletedScope(ACPI_PARSE_STATE * ParserState)196bc36eafdSMike Gerdts AcpiPsHasCompletedScope (
197bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState)
198bc36eafdSMike Gerdts {
199bc36eafdSMike Gerdts
200bc36eafdSMike Gerdts return ((BOOLEAN)
201bc36eafdSMike Gerdts ((ParserState->Aml >= ParserState->Scope->ParseScope.ArgEnd ||
202bc36eafdSMike Gerdts !ParserState->Scope->ParseScope.ArgCount)));
203bc36eafdSMike Gerdts }
204bc36eafdSMike Gerdts
205bc36eafdSMike Gerdts
206bc36eafdSMike Gerdts /*******************************************************************************
207bc36eafdSMike Gerdts *
208bc36eafdSMike Gerdts * FUNCTION: AcpiPsInitScope
209bc36eafdSMike Gerdts *
210bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
211bc36eafdSMike Gerdts * Root - the Root Node of this new scope
212bc36eafdSMike Gerdts *
213bc36eafdSMike Gerdts * RETURN: Status
214bc36eafdSMike Gerdts *
215bc36eafdSMike Gerdts * DESCRIPTION: Allocate and init a new scope object
216bc36eafdSMike Gerdts *
217bc36eafdSMike Gerdts ******************************************************************************/
218bc36eafdSMike Gerdts
219bc36eafdSMike Gerdts ACPI_STATUS
AcpiPsInitScope(ACPI_PARSE_STATE * ParserState,ACPI_PARSE_OBJECT * RootOp)220bc36eafdSMike Gerdts AcpiPsInitScope (
221bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState,
222bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *RootOp)
223bc36eafdSMike Gerdts {
224bc36eafdSMike Gerdts ACPI_GENERIC_STATE *Scope;
225bc36eafdSMike Gerdts
226bc36eafdSMike Gerdts
227bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE_PTR (PsInitScope, RootOp);
228bc36eafdSMike Gerdts
229bc36eafdSMike Gerdts
230bc36eafdSMike Gerdts Scope = AcpiUtCreateGenericState ();
231bc36eafdSMike Gerdts if (!Scope)
232bc36eafdSMike Gerdts {
233bc36eafdSMike Gerdts return_ACPI_STATUS (AE_NO_MEMORY);
234bc36eafdSMike Gerdts }
235bc36eafdSMike Gerdts
236bc36eafdSMike Gerdts Scope->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RPSCOPE;
237bc36eafdSMike Gerdts Scope->ParseScope.Op = RootOp;
238bc36eafdSMike Gerdts Scope->ParseScope.ArgCount = ACPI_VAR_ARGS;
239bc36eafdSMike Gerdts Scope->ParseScope.ArgEnd = ParserState->AmlEnd;
240bc36eafdSMike Gerdts Scope->ParseScope.PkgEnd = ParserState->AmlEnd;
241bc36eafdSMike Gerdts
242bc36eafdSMike Gerdts ParserState->Scope = Scope;
243bc36eafdSMike Gerdts ParserState->StartOp = RootOp;
244bc36eafdSMike Gerdts
245bc36eafdSMike Gerdts return_ACPI_STATUS (AE_OK);
246bc36eafdSMike Gerdts }
247bc36eafdSMike Gerdts
248bc36eafdSMike Gerdts
249bc36eafdSMike Gerdts /*******************************************************************************
250bc36eafdSMike Gerdts *
251bc36eafdSMike Gerdts * FUNCTION: AcpiPsPushScope
252bc36eafdSMike Gerdts *
253bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
254bc36eafdSMike Gerdts * Op - Current op to be pushed
255bc36eafdSMike Gerdts * RemainingArgs - List of args remaining
256bc36eafdSMike Gerdts * ArgCount - Fixed or variable number of args
257bc36eafdSMike Gerdts *
258bc36eafdSMike Gerdts * RETURN: Status
259bc36eafdSMike Gerdts *
260bc36eafdSMike Gerdts * DESCRIPTION: Push current op to begin parsing its argument
261bc36eafdSMike Gerdts *
262bc36eafdSMike Gerdts ******************************************************************************/
263bc36eafdSMike Gerdts
264bc36eafdSMike Gerdts ACPI_STATUS
AcpiPsPushScope(ACPI_PARSE_STATE * ParserState,ACPI_PARSE_OBJECT * Op,UINT32 RemainingArgs,UINT32 ArgCount)265bc36eafdSMike Gerdts AcpiPsPushScope (
266bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState,
267bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *Op,
268bc36eafdSMike Gerdts UINT32 RemainingArgs,
269bc36eafdSMike Gerdts UINT32 ArgCount)
270bc36eafdSMike Gerdts {
271bc36eafdSMike Gerdts ACPI_GENERIC_STATE *Scope;
272bc36eafdSMike Gerdts
273bc36eafdSMike Gerdts
274bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE_PTR (PsPushScope, Op);
275bc36eafdSMike Gerdts
276bc36eafdSMike Gerdts
277bc36eafdSMike Gerdts Scope = AcpiUtCreateGenericState ();
278bc36eafdSMike Gerdts if (!Scope)
279bc36eafdSMike Gerdts {
280bc36eafdSMike Gerdts return_ACPI_STATUS (AE_NO_MEMORY);
281bc36eafdSMike Gerdts }
282bc36eafdSMike Gerdts
283bc36eafdSMike Gerdts Scope->Common.DescriptorType = ACPI_DESC_TYPE_STATE_PSCOPE;
284bc36eafdSMike Gerdts Scope->ParseScope.Op = Op;
285bc36eafdSMike Gerdts Scope->ParseScope.ArgList = RemainingArgs;
286bc36eafdSMike Gerdts Scope->ParseScope.ArgCount = ArgCount;
287bc36eafdSMike Gerdts Scope->ParseScope.PkgEnd = ParserState->PkgEnd;
288bc36eafdSMike Gerdts
289bc36eafdSMike Gerdts /* Push onto scope stack */
290bc36eafdSMike Gerdts
291bc36eafdSMike Gerdts AcpiUtPushGenericState (&ParserState->Scope, Scope);
292bc36eafdSMike Gerdts
293bc36eafdSMike Gerdts if (ArgCount == ACPI_VAR_ARGS)
294bc36eafdSMike Gerdts {
295bc36eafdSMike Gerdts /* Multiple arguments */
296bc36eafdSMike Gerdts
297bc36eafdSMike Gerdts Scope->ParseScope.ArgEnd = ParserState->PkgEnd;
298bc36eafdSMike Gerdts }
299bc36eafdSMike Gerdts else
300bc36eafdSMike Gerdts {
301bc36eafdSMike Gerdts /* Single argument */
302bc36eafdSMike Gerdts
303bc36eafdSMike Gerdts Scope->ParseScope.ArgEnd = ACPI_TO_POINTER (ACPI_MAX_PTR);
304bc36eafdSMike Gerdts }
305bc36eafdSMike Gerdts
306bc36eafdSMike Gerdts return_ACPI_STATUS (AE_OK);
307bc36eafdSMike Gerdts }
308bc36eafdSMike Gerdts
309bc36eafdSMike Gerdts
310bc36eafdSMike Gerdts /*******************************************************************************
311bc36eafdSMike Gerdts *
312bc36eafdSMike Gerdts * FUNCTION: AcpiPsPopScope
313bc36eafdSMike Gerdts *
314bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
315bc36eafdSMike Gerdts * Op - Where the popped op is returned
316bc36eafdSMike Gerdts * ArgList - Where the popped "next argument" is
317bc36eafdSMike Gerdts * returned
318bc36eafdSMike Gerdts * ArgCount - Count of objects in ArgList
319bc36eafdSMike Gerdts *
320bc36eafdSMike Gerdts * RETURN: Status
321bc36eafdSMike Gerdts *
322bc36eafdSMike Gerdts * DESCRIPTION: Return to parsing a previous op
323bc36eafdSMike Gerdts *
324bc36eafdSMike Gerdts ******************************************************************************/
325bc36eafdSMike Gerdts
326bc36eafdSMike Gerdts void
AcpiPsPopScope(ACPI_PARSE_STATE * ParserState,ACPI_PARSE_OBJECT ** Op,UINT32 * ArgList,UINT32 * ArgCount)327bc36eafdSMike Gerdts AcpiPsPopScope (
328bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState,
329bc36eafdSMike Gerdts ACPI_PARSE_OBJECT **Op,
330bc36eafdSMike Gerdts UINT32 *ArgList,
331bc36eafdSMike Gerdts UINT32 *ArgCount)
332bc36eafdSMike Gerdts {
333bc36eafdSMike Gerdts ACPI_GENERIC_STATE *Scope = ParserState->Scope;
334bc36eafdSMike Gerdts
335bc36eafdSMike Gerdts
336bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (PsPopScope);
337bc36eafdSMike Gerdts
338bc36eafdSMike Gerdts
339bc36eafdSMike Gerdts /* Only pop the scope if there is in fact a next scope */
340bc36eafdSMike Gerdts
341bc36eafdSMike Gerdts if (Scope->Common.Next)
342bc36eafdSMike Gerdts {
343bc36eafdSMike Gerdts Scope = AcpiUtPopGenericState (&ParserState->Scope);
344bc36eafdSMike Gerdts
345bc36eafdSMike Gerdts /* Return to parsing previous op */
346bc36eafdSMike Gerdts
347bc36eafdSMike Gerdts *Op = Scope->ParseScope.Op;
348bc36eafdSMike Gerdts *ArgList = Scope->ParseScope.ArgList;
349bc36eafdSMike Gerdts *ArgCount = Scope->ParseScope.ArgCount;
350bc36eafdSMike Gerdts ParserState->PkgEnd = Scope->ParseScope.PkgEnd;
351bc36eafdSMike Gerdts
352bc36eafdSMike Gerdts /* All done with this scope state structure */
353bc36eafdSMike Gerdts
354bc36eafdSMike Gerdts AcpiUtDeleteGenericState (Scope);
355bc36eafdSMike Gerdts }
356bc36eafdSMike Gerdts else
357bc36eafdSMike Gerdts {
358bc36eafdSMike Gerdts /* Empty parse stack, prepare to fetch next opcode */
359bc36eafdSMike Gerdts
360bc36eafdSMike Gerdts *Op = NULL;
361bc36eafdSMike Gerdts *ArgList = 0;
362bc36eafdSMike Gerdts *ArgCount = 0;
363bc36eafdSMike Gerdts }
364bc36eafdSMike Gerdts
365bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
366bc36eafdSMike Gerdts "Popped Op %p Args %X\n", *Op, *ArgCount));
367bc36eafdSMike Gerdts return_VOID;
368bc36eafdSMike Gerdts }
369bc36eafdSMike Gerdts
370bc36eafdSMike Gerdts
371bc36eafdSMike Gerdts /*******************************************************************************
372bc36eafdSMike Gerdts *
373bc36eafdSMike Gerdts * FUNCTION: AcpiPsCleanupScope
374bc36eafdSMike Gerdts *
375bc36eafdSMike Gerdts * PARAMETERS: ParserState - Current parser state object
376bc36eafdSMike Gerdts *
377bc36eafdSMike Gerdts * RETURN: None
378bc36eafdSMike Gerdts *
379bc36eafdSMike Gerdts * DESCRIPTION: Destroy available list, remaining stack levels, and return
380bc36eafdSMike Gerdts * root scope
381bc36eafdSMike Gerdts *
382bc36eafdSMike Gerdts ******************************************************************************/
383bc36eafdSMike Gerdts
384bc36eafdSMike Gerdts void
AcpiPsCleanupScope(ACPI_PARSE_STATE * ParserState)385bc36eafdSMike Gerdts AcpiPsCleanupScope (
386bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState)
387bc36eafdSMike Gerdts {
388bc36eafdSMike Gerdts ACPI_GENERIC_STATE *Scope;
389bc36eafdSMike Gerdts
390bc36eafdSMike Gerdts
391bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE_PTR (PsCleanupScope, ParserState);
392bc36eafdSMike Gerdts
393bc36eafdSMike Gerdts
394bc36eafdSMike Gerdts if (!ParserState)
395bc36eafdSMike Gerdts {
396bc36eafdSMike Gerdts return_VOID;
397bc36eafdSMike Gerdts }
398bc36eafdSMike Gerdts
399bc36eafdSMike Gerdts /* Delete anything on the scope stack */
400bc36eafdSMike Gerdts
401bc36eafdSMike Gerdts while (ParserState->Scope)
402bc36eafdSMike Gerdts {
403bc36eafdSMike Gerdts Scope = AcpiUtPopGenericState (&ParserState->Scope);
404bc36eafdSMike Gerdts AcpiUtDeleteGenericState (Scope);
405bc36eafdSMike Gerdts }
406bc36eafdSMike Gerdts
407bc36eafdSMike Gerdts return_VOID;
408bc36eafdSMike Gerdts }
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