17c478bd9Sstevel@tonic-gate /******************************************************************************
27c478bd9Sstevel@tonic-gate *
37c478bd9Sstevel@tonic-gate * Module Name: dswstate - Dispatcher parse tree walk management routines
47c478bd9Sstevel@tonic-gate *
57c478bd9Sstevel@tonic-gate *****************************************************************************/
67c478bd9Sstevel@tonic-gate
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.
127c478bd9Sstevel@tonic-gate * All rights reserved.
137c478bd9Sstevel@tonic-gate *
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 *
11926f3cdf0SGordon Ross * Redistribution and use in source and binary forms, with or without
12026f3cdf0SGordon Ross * modification, are permitted provided that the following conditions
12126f3cdf0SGordon Ross * are met:
12226f3cdf0SGordon Ross * 1. Redistributions of source code must retain the above copyright
12326f3cdf0SGordon Ross * notice, this list of conditions, and the following disclaimer,
12426f3cdf0SGordon Ross * without modification.
12526f3cdf0SGordon Ross * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12626f3cdf0SGordon Ross * substantially similar to the "NO WARRANTY" disclaimer below
12726f3cdf0SGordon Ross * ("Disclaimer") and any redistribution must be conditioned upon
12826f3cdf0SGordon Ross * including a substantially similar Disclaimer requirement for further
12926f3cdf0SGordon Ross * binary redistribution.
13026f3cdf0SGordon Ross * 3. Neither the names of the above-listed copyright holders nor the names
13126f3cdf0SGordon Ross * of any contributors may be used to endorse or promote products derived
13226f3cdf0SGordon Ross * from this software without specific prior written permission.
13326f3cdf0SGordon Ross *
13426f3cdf0SGordon Ross * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13526f3cdf0SGordon Ross * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
13726f3cdf0SGordon Ross * 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
147*35786f68SRobert Mustacchi * GNU General Public License ("GPL") version 2 as published by the Free
148*35786f68SRobert Mustacchi * Software Foundation.
149*35786f68SRobert Mustacchi *
150*35786f68SRobert Mustacchi *****************************************************************************/
1517c478bd9Sstevel@tonic-gate
1527c478bd9Sstevel@tonic-gate #include "acpi.h"
153aa2aa9a6SDana Myers #include "accommon.h"
1547c478bd9Sstevel@tonic-gate #include "acparser.h"
1557c478bd9Sstevel@tonic-gate #include "acdispat.h"
1567c478bd9Sstevel@tonic-gate #include "acnamesp.h"
1577c478bd9Sstevel@tonic-gate
1587c478bd9Sstevel@tonic-gate #define _COMPONENT ACPI_DISPATCHER
1597c478bd9Sstevel@tonic-gate ACPI_MODULE_NAME ("dswstate")
1607c478bd9Sstevel@tonic-gate
1617c478bd9Sstevel@tonic-gate /* Local prototypes */
1627c478bd9Sstevel@tonic-gate
163db2bae30SDana Myers static ACPI_STATUS
164db2bae30SDana Myers AcpiDsResultStackPush (
1657c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState);
1667c478bd9Sstevel@tonic-gate
167db2bae30SDana Myers static ACPI_STATUS
168db2bae30SDana Myers AcpiDsResultStackPop (
1697c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState);
1707c478bd9Sstevel@tonic-gate
1717c478bd9Sstevel@tonic-gate
1727c478bd9Sstevel@tonic-gate /*******************************************************************************
1737c478bd9Sstevel@tonic-gate *
174db2bae30SDana Myers * FUNCTION: AcpiDsResultPop
1757c478bd9Sstevel@tonic-gate *
1767c478bd9Sstevel@tonic-gate * PARAMETERS: Object - Where to return the popped object
1777c478bd9Sstevel@tonic-gate * WalkState - Current Walk state
1787c478bd9Sstevel@tonic-gate *
1797c478bd9Sstevel@tonic-gate * RETURN: Status
1807c478bd9Sstevel@tonic-gate *
181db2bae30SDana Myers * DESCRIPTION: Pop an object off the top of this walk's result stack
1827c478bd9Sstevel@tonic-gate *
1837c478bd9Sstevel@tonic-gate ******************************************************************************/
1847c478bd9Sstevel@tonic-gate
1857c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiDsResultPop(ACPI_OPERAND_OBJECT ** Object,ACPI_WALK_STATE * WalkState)186db2bae30SDana Myers AcpiDsResultPop (
1877c478bd9Sstevel@tonic-gate ACPI_OPERAND_OBJECT **Object,
1887c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
1897c478bd9Sstevel@tonic-gate {
190db2bae30SDana Myers UINT32 Index;
1917c478bd9Sstevel@tonic-gate ACPI_GENERIC_STATE *State;
192db2bae30SDana Myers ACPI_STATUS Status;
1937c478bd9Sstevel@tonic-gate
1947c478bd9Sstevel@tonic-gate
195db2bae30SDana Myers ACPI_FUNCTION_NAME (DsResultPop);
1967c478bd9Sstevel@tonic-gate
1977c478bd9Sstevel@tonic-gate
1987c478bd9Sstevel@tonic-gate State = WalkState->Results;
199db2bae30SDana Myers
200db2bae30SDana Myers /* Incorrect state of result stack */
201db2bae30SDana Myers
202db2bae30SDana Myers if (State && !WalkState->ResultCount)
2037c478bd9Sstevel@tonic-gate {
204db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "No results on result stack"));
205db2bae30SDana Myers return (AE_AML_INTERNAL);
2067c478bd9Sstevel@tonic-gate }
2077c478bd9Sstevel@tonic-gate
208db2bae30SDana Myers if (!State && WalkState->ResultCount)
2097c478bd9Sstevel@tonic-gate {
210db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "No result state for result stack"));
211db2bae30SDana Myers return (AE_AML_INTERNAL);
2127c478bd9Sstevel@tonic-gate }
2137c478bd9Sstevel@tonic-gate
214db2bae30SDana Myers /* Empty result stack */
2157c478bd9Sstevel@tonic-gate
216db2bae30SDana Myers if (!State)
2177c478bd9Sstevel@tonic-gate {
218db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "Result stack is empty! State=%p", WalkState));
2197c478bd9Sstevel@tonic-gate return (AE_AML_NO_RETURN_VALUE);
2207c478bd9Sstevel@tonic-gate }
2217c478bd9Sstevel@tonic-gate
222db2bae30SDana Myers /* Return object of the top element and clean that top element result stack */
2237c478bd9Sstevel@tonic-gate
224db2bae30SDana Myers WalkState->ResultCount--;
225aa2aa9a6SDana Myers Index = (UINT32) WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM;
2267c478bd9Sstevel@tonic-gate
2277c478bd9Sstevel@tonic-gate *Object = State->Results.ObjDesc [Index];
228db2bae30SDana Myers if (!*Object)
2297c478bd9Sstevel@tonic-gate {
230db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "No result objects on result stack, State=%p",
2317c478bd9Sstevel@tonic-gate WalkState));
2327c478bd9Sstevel@tonic-gate return (AE_AML_NO_RETURN_VALUE);
2337c478bd9Sstevel@tonic-gate }
2347c478bd9Sstevel@tonic-gate
235db2bae30SDana Myers State->Results.ObjDesc [Index] = NULL;
236db2bae30SDana Myers if (Index == 0)
2377c478bd9Sstevel@tonic-gate {
238db2bae30SDana Myers Status = AcpiDsResultStackPop (WalkState);
239db2bae30SDana Myers if (ACPI_FAILURE (Status))
2407c478bd9Sstevel@tonic-gate {
241db2bae30SDana Myers return (Status);
2427c478bd9Sstevel@tonic-gate }
2437c478bd9Sstevel@tonic-gate }
2447c478bd9Sstevel@tonic-gate
245db2bae30SDana Myers ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
246db2bae30SDana Myers "Obj=%p [%s] Index=%X State=%p Num=%X\n", *Object,
247db2bae30SDana Myers AcpiUtGetObjectTypeName (*Object),
248db2bae30SDana Myers Index, WalkState, WalkState->ResultCount));
249db2bae30SDana Myers
250db2bae30SDana Myers return (AE_OK);
2517c478bd9Sstevel@tonic-gate }
2527c478bd9Sstevel@tonic-gate
2537c478bd9Sstevel@tonic-gate
2547c478bd9Sstevel@tonic-gate /*******************************************************************************
2557c478bd9Sstevel@tonic-gate *
256db2bae30SDana Myers * FUNCTION: AcpiDsResultPush
2577c478bd9Sstevel@tonic-gate *
2587c478bd9Sstevel@tonic-gate * PARAMETERS: Object - Where to return the popped object
2597c478bd9Sstevel@tonic-gate * WalkState - Current Walk state
2607c478bd9Sstevel@tonic-gate *
2617c478bd9Sstevel@tonic-gate * RETURN: Status
2627c478bd9Sstevel@tonic-gate *
263db2bae30SDana Myers * DESCRIPTION: Push an object onto the current result stack
2647c478bd9Sstevel@tonic-gate *
2657c478bd9Sstevel@tonic-gate ******************************************************************************/
2667c478bd9Sstevel@tonic-gate
2677c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiDsResultPush(ACPI_OPERAND_OBJECT * Object,ACPI_WALK_STATE * WalkState)268db2bae30SDana Myers AcpiDsResultPush (
269db2bae30SDana Myers ACPI_OPERAND_OBJECT *Object,
2707c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
2717c478bd9Sstevel@tonic-gate {
2727c478bd9Sstevel@tonic-gate ACPI_GENERIC_STATE *State;
273db2bae30SDana Myers ACPI_STATUS Status;
274db2bae30SDana Myers UINT32 Index;
2757c478bd9Sstevel@tonic-gate
2767c478bd9Sstevel@tonic-gate
277db2bae30SDana Myers ACPI_FUNCTION_NAME (DsResultPush);
2787c478bd9Sstevel@tonic-gate
2797c478bd9Sstevel@tonic-gate
280db2bae30SDana Myers if (WalkState->ResultCount > WalkState->ResultSize)
2817c478bd9Sstevel@tonic-gate {
282db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "Result stack is full"));
283db2bae30SDana Myers return (AE_AML_INTERNAL);
2847c478bd9Sstevel@tonic-gate }
285db2bae30SDana Myers else if (WalkState->ResultCount == WalkState->ResultSize)
2867c478bd9Sstevel@tonic-gate {
287db2bae30SDana Myers /* Extend the result stack */
2887c478bd9Sstevel@tonic-gate
289db2bae30SDana Myers Status = AcpiDsResultStackPush (WalkState);
290db2bae30SDana Myers if (ACPI_FAILURE (Status))
291db2bae30SDana Myers {
292db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "Failed to extend the result stack"));
293db2bae30SDana Myers return (Status);
294db2bae30SDana Myers }
2957c478bd9Sstevel@tonic-gate }
2967c478bd9Sstevel@tonic-gate
297db2bae30SDana Myers if (!(WalkState->ResultCount < WalkState->ResultSize))
2987c478bd9Sstevel@tonic-gate {
299db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "No free elements in result stack"));
300db2bae30SDana Myers return (AE_AML_INTERNAL);
3017c478bd9Sstevel@tonic-gate }
3027c478bd9Sstevel@tonic-gate
3037c478bd9Sstevel@tonic-gate State = WalkState->Results;
3047c478bd9Sstevel@tonic-gate if (!State)
3057c478bd9Sstevel@tonic-gate {
30630082d0cSmyers ACPI_ERROR ((AE_INFO, "No result stack frame during push"));
3077c478bd9Sstevel@tonic-gate return (AE_AML_INTERNAL);
3087c478bd9Sstevel@tonic-gate }
3097c478bd9Sstevel@tonic-gate
3107c478bd9Sstevel@tonic-gate if (!Object)
3117c478bd9Sstevel@tonic-gate {
31230082d0cSmyers ACPI_ERROR ((AE_INFO,
31326f3cdf0SGordon Ross "Null Object! Obj=%p State=%p Num=%u",
314db2bae30SDana Myers Object, WalkState, WalkState->ResultCount));
3157c478bd9Sstevel@tonic-gate return (AE_BAD_PARAMETER);
3167c478bd9Sstevel@tonic-gate }
3177c478bd9Sstevel@tonic-gate
318db2bae30SDana Myers /* Assign the address of object to the top free element of result stack */
319db2bae30SDana Myers
320aa2aa9a6SDana Myers Index = (UINT32) WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM;
321db2bae30SDana Myers State->Results.ObjDesc [Index] = Object;
322db2bae30SDana Myers WalkState->ResultCount++;
3237c478bd9Sstevel@tonic-gate
3247c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
325db2bae30SDana Myers Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object),
326db2bae30SDana Myers WalkState, WalkState->ResultCount, WalkState->CurrentResult));
3277c478bd9Sstevel@tonic-gate
3287c478bd9Sstevel@tonic-gate return (AE_OK);
3297c478bd9Sstevel@tonic-gate }
3307c478bd9Sstevel@tonic-gate
3317c478bd9Sstevel@tonic-gate
3327c478bd9Sstevel@tonic-gate /*******************************************************************************
3337c478bd9Sstevel@tonic-gate *
3347c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsResultStackPush
3357c478bd9Sstevel@tonic-gate *
3367c478bd9Sstevel@tonic-gate * PARAMETERS: WalkState - Current Walk state
3377c478bd9Sstevel@tonic-gate *
3387c478bd9Sstevel@tonic-gate * RETURN: Status
3397c478bd9Sstevel@tonic-gate *
340db2bae30SDana Myers * DESCRIPTION: Push an object onto the WalkState result stack
3417c478bd9Sstevel@tonic-gate *
3427c478bd9Sstevel@tonic-gate ******************************************************************************/
3437c478bd9Sstevel@tonic-gate
344db2bae30SDana Myers static ACPI_STATUS
AcpiDsResultStackPush(ACPI_WALK_STATE * WalkState)3457c478bd9Sstevel@tonic-gate AcpiDsResultStackPush (
3467c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
3477c478bd9Sstevel@tonic-gate {
3487c478bd9Sstevel@tonic-gate ACPI_GENERIC_STATE *State;
3497c478bd9Sstevel@tonic-gate
350db2bae30SDana Myers
35127f7c583Smyers ACPI_FUNCTION_NAME (DsResultStackPush);
3527c478bd9Sstevel@tonic-gate
3537c478bd9Sstevel@tonic-gate
354db2bae30SDana Myers /* Check for stack overflow */
355db2bae30SDana Myers
356db2bae30SDana Myers if (((UINT32) WalkState->ResultSize + ACPI_RESULTS_FRAME_OBJ_NUM) >
357db2bae30SDana Myers ACPI_RESULTS_OBJ_NUM_MAX)
358db2bae30SDana Myers {
35926f3cdf0SGordon Ross ACPI_ERROR ((AE_INFO, "Result stack overflow: State=%p Num=%u",
360db2bae30SDana Myers WalkState, WalkState->ResultSize));
361db2bae30SDana Myers return (AE_STACK_OVERFLOW);
362db2bae30SDana Myers }
363db2bae30SDana Myers
3647c478bd9Sstevel@tonic-gate State = AcpiUtCreateGenericState ();
3657c478bd9Sstevel@tonic-gate if (!State)
3667c478bd9Sstevel@tonic-gate {
3677c478bd9Sstevel@tonic-gate return (AE_NO_MEMORY);
3687c478bd9Sstevel@tonic-gate }
3697c478bd9Sstevel@tonic-gate
37027f7c583Smyers State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RESULT;
3717c478bd9Sstevel@tonic-gate AcpiUtPushGenericState (&WalkState->Results, State);
3727c478bd9Sstevel@tonic-gate
373db2bae30SDana Myers /* Increase the length of the result stack by the length of frame */
374db2bae30SDana Myers
375db2bae30SDana Myers WalkState->ResultSize += ACPI_RESULTS_FRAME_OBJ_NUM;
376db2bae30SDana Myers
3777c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Results=%p State=%p\n",
3787c478bd9Sstevel@tonic-gate State, WalkState));
3797c478bd9Sstevel@tonic-gate
3807c478bd9Sstevel@tonic-gate return (AE_OK);
3817c478bd9Sstevel@tonic-gate }
3827c478bd9Sstevel@tonic-gate
3837c478bd9Sstevel@tonic-gate
3847c478bd9Sstevel@tonic-gate /*******************************************************************************
3857c478bd9Sstevel@tonic-gate *
3867c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsResultStackPop
3877c478bd9Sstevel@tonic-gate *
3887c478bd9Sstevel@tonic-gate * PARAMETERS: WalkState - Current Walk state
3897c478bd9Sstevel@tonic-gate *
3907c478bd9Sstevel@tonic-gate * RETURN: Status
3917c478bd9Sstevel@tonic-gate *
392db2bae30SDana Myers * DESCRIPTION: Pop an object off of the WalkState result stack
3937c478bd9Sstevel@tonic-gate *
3947c478bd9Sstevel@tonic-gate ******************************************************************************/
3957c478bd9Sstevel@tonic-gate
396db2bae30SDana Myers static ACPI_STATUS
AcpiDsResultStackPop(ACPI_WALK_STATE * WalkState)3977c478bd9Sstevel@tonic-gate AcpiDsResultStackPop (
3987c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
3997c478bd9Sstevel@tonic-gate {
4007c478bd9Sstevel@tonic-gate ACPI_GENERIC_STATE *State;
4017c478bd9Sstevel@tonic-gate
402db2bae30SDana Myers
40327f7c583Smyers ACPI_FUNCTION_NAME (DsResultStackPop);
4047c478bd9Sstevel@tonic-gate
4057c478bd9Sstevel@tonic-gate
4067c478bd9Sstevel@tonic-gate /* Check for stack underflow */
4077c478bd9Sstevel@tonic-gate
4087c478bd9Sstevel@tonic-gate if (WalkState->Results == NULL)
4097c478bd9Sstevel@tonic-gate {
4107b1019a6SJerry Jelinek ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
4117b1019a6SJerry Jelinek "Result stack underflow - State=%p\n", WalkState));
4127c478bd9Sstevel@tonic-gate return (AE_AML_NO_OPERAND);
4137c478bd9Sstevel@tonic-gate }
4147c478bd9Sstevel@tonic-gate
415db2bae30SDana Myers if (WalkState->ResultSize < ACPI_RESULTS_FRAME_OBJ_NUM)
416db2bae30SDana Myers {
417db2bae30SDana Myers ACPI_ERROR ((AE_INFO, "Insufficient result stack size"));
418db2bae30SDana Myers return (AE_AML_INTERNAL);
419db2bae30SDana Myers }
420db2bae30SDana Myers
4217c478bd9Sstevel@tonic-gate State = AcpiUtPopGenericState (&WalkState->Results);
422db2bae30SDana Myers AcpiUtDeleteGenericState (State);
423db2bae30SDana Myers
424db2bae30SDana Myers /* Decrease the length of result stack by the length of frame */
425db2bae30SDana Myers
426db2bae30SDana Myers WalkState->ResultSize -= ACPI_RESULTS_FRAME_OBJ_NUM;
4277c478bd9Sstevel@tonic-gate
4287c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
4297c478bd9Sstevel@tonic-gate "Result=%p RemainingResults=%X State=%p\n",
430db2bae30SDana Myers State, WalkState->ResultCount, WalkState));
4317c478bd9Sstevel@tonic-gate
4327c478bd9Sstevel@tonic-gate return (AE_OK);
4337c478bd9Sstevel@tonic-gate }
4347c478bd9Sstevel@tonic-gate
4357c478bd9Sstevel@tonic-gate
4367c478bd9Sstevel@tonic-gate /*******************************************************************************
4377c478bd9Sstevel@tonic-gate *
4387c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsObjStackPush
4397c478bd9Sstevel@tonic-gate *
4407c478bd9Sstevel@tonic-gate * PARAMETERS: Object - Object to push
4417c478bd9Sstevel@tonic-gate * WalkState - Current Walk state
4427c478bd9Sstevel@tonic-gate *
4437c478bd9Sstevel@tonic-gate * RETURN: Status
4447c478bd9Sstevel@tonic-gate *
4457c478bd9Sstevel@tonic-gate * DESCRIPTION: Push an object onto this walk's object/operand stack
4467c478bd9Sstevel@tonic-gate *
4477c478bd9Sstevel@tonic-gate ******************************************************************************/
4487c478bd9Sstevel@tonic-gate
4497c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiDsObjStackPush(void * Object,ACPI_WALK_STATE * WalkState)4507c478bd9Sstevel@tonic-gate AcpiDsObjStackPush (
4517c478bd9Sstevel@tonic-gate void *Object,
4527c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
4537c478bd9Sstevel@tonic-gate {
45427f7c583Smyers ACPI_FUNCTION_NAME (DsObjStackPush);
4557c478bd9Sstevel@tonic-gate
4567c478bd9Sstevel@tonic-gate
4577c478bd9Sstevel@tonic-gate /* Check for stack overflow */
4587c478bd9Sstevel@tonic-gate
4597c478bd9Sstevel@tonic-gate if (WalkState->NumOperands >= ACPI_OBJ_NUM_OPERANDS)
4607c478bd9Sstevel@tonic-gate {
46130082d0cSmyers ACPI_ERROR ((AE_INFO,
46226f3cdf0SGordon Ross "Object stack overflow! Obj=%p State=%p #Ops=%u",
4637c478bd9Sstevel@tonic-gate Object, WalkState, WalkState->NumOperands));
4647c478bd9Sstevel@tonic-gate return (AE_STACK_OVERFLOW);
4657c478bd9Sstevel@tonic-gate }
4667c478bd9Sstevel@tonic-gate
4677c478bd9Sstevel@tonic-gate /* Put the object onto the stack */
4687c478bd9Sstevel@tonic-gate
469db2bae30SDana Myers WalkState->Operands [WalkState->OperandIndex] = Object;
4707c478bd9Sstevel@tonic-gate WalkState->NumOperands++;
4717c478bd9Sstevel@tonic-gate
472db2bae30SDana Myers /* For the usual order of filling the operand stack */
473db2bae30SDana Myers
474db2bae30SDana Myers WalkState->OperandIndex++;
475db2bae30SDana Myers
4767c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
477db2bae30SDana Myers Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object),
478db2bae30SDana Myers WalkState, WalkState->NumOperands));
4797c478bd9Sstevel@tonic-gate
4807c478bd9Sstevel@tonic-gate return (AE_OK);
4817c478bd9Sstevel@tonic-gate }
4827c478bd9Sstevel@tonic-gate
4837c478bd9Sstevel@tonic-gate
4847c478bd9Sstevel@tonic-gate /*******************************************************************************
4857c478bd9Sstevel@tonic-gate *
4867c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsObjStackPop
4877c478bd9Sstevel@tonic-gate *
4887c478bd9Sstevel@tonic-gate * PARAMETERS: PopCount - Number of objects/entries to pop
4897c478bd9Sstevel@tonic-gate * WalkState - Current Walk state
4907c478bd9Sstevel@tonic-gate *
4917c478bd9Sstevel@tonic-gate * RETURN: Status
4927c478bd9Sstevel@tonic-gate *
4937b1019a6SJerry Jelinek * DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
4947c478bd9Sstevel@tonic-gate * deleted by this routine.
4957c478bd9Sstevel@tonic-gate *
4967c478bd9Sstevel@tonic-gate ******************************************************************************/
4977c478bd9Sstevel@tonic-gate
4987c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiDsObjStackPop(UINT32 PopCount,ACPI_WALK_STATE * WalkState)4997c478bd9Sstevel@tonic-gate AcpiDsObjStackPop (
5007c478bd9Sstevel@tonic-gate UINT32 PopCount,
5017c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
5027c478bd9Sstevel@tonic-gate {
5037c478bd9Sstevel@tonic-gate UINT32 i;
5047c478bd9Sstevel@tonic-gate
505db2bae30SDana Myers
50627f7c583Smyers ACPI_FUNCTION_NAME (DsObjStackPop);
5077c478bd9Sstevel@tonic-gate
5087c478bd9Sstevel@tonic-gate
5097c478bd9Sstevel@tonic-gate for (i = 0; i < PopCount; i++)
5107c478bd9Sstevel@tonic-gate {
5117c478bd9Sstevel@tonic-gate /* Check for stack underflow */
5127c478bd9Sstevel@tonic-gate
5137c478bd9Sstevel@tonic-gate if (WalkState->NumOperands == 0)
5147c478bd9Sstevel@tonic-gate {
51530082d0cSmyers ACPI_ERROR ((AE_INFO,
51626f3cdf0SGordon Ross "Object stack underflow! Count=%X State=%p #Ops=%u",
5177c478bd9Sstevel@tonic-gate PopCount, WalkState, WalkState->NumOperands));
5187c478bd9Sstevel@tonic-gate return (AE_STACK_UNDERFLOW);
5197c478bd9Sstevel@tonic-gate }
5207c478bd9Sstevel@tonic-gate
5217c478bd9Sstevel@tonic-gate /* Just set the stack entry to null */
5227c478bd9Sstevel@tonic-gate
5237c478bd9Sstevel@tonic-gate WalkState->NumOperands--;
5247c478bd9Sstevel@tonic-gate WalkState->Operands [WalkState->NumOperands] = NULL;
5257c478bd9Sstevel@tonic-gate }
5267c478bd9Sstevel@tonic-gate
52726f3cdf0SGordon Ross ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%u\n",
528db2bae30SDana Myers PopCount, WalkState, WalkState->NumOperands));
5297c478bd9Sstevel@tonic-gate
5307c478bd9Sstevel@tonic-gate return (AE_OK);
5317c478bd9Sstevel@tonic-gate }
5327c478bd9Sstevel@tonic-gate
5337c478bd9Sstevel@tonic-gate
5347c478bd9Sstevel@tonic-gate /*******************************************************************************
5357c478bd9Sstevel@tonic-gate *
5367c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsObjStackPopAndDelete
5377c478bd9Sstevel@tonic-gate *
5387c478bd9Sstevel@tonic-gate * PARAMETERS: PopCount - Number of objects/entries to pop
5397c478bd9Sstevel@tonic-gate * WalkState - Current Walk state
5407c478bd9Sstevel@tonic-gate *
5417c478bd9Sstevel@tonic-gate * RETURN: Status
5427c478bd9Sstevel@tonic-gate *
5437c478bd9Sstevel@tonic-gate * DESCRIPTION: Pop this walk's object stack and delete each object that is
5447c478bd9Sstevel@tonic-gate * popped off.
5457c478bd9Sstevel@tonic-gate *
5467c478bd9Sstevel@tonic-gate ******************************************************************************/
5477c478bd9Sstevel@tonic-gate
548db2bae30SDana Myers void
AcpiDsObjStackPopAndDelete(UINT32 PopCount,ACPI_WALK_STATE * WalkState)5497c478bd9Sstevel@tonic-gate AcpiDsObjStackPopAndDelete (
5507c478bd9Sstevel@tonic-gate UINT32 PopCount,
5517c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
5527c478bd9Sstevel@tonic-gate {
553db2bae30SDana Myers INT32 i;
5547c478bd9Sstevel@tonic-gate ACPI_OPERAND_OBJECT *ObjDesc;
5557c478bd9Sstevel@tonic-gate
5567c478bd9Sstevel@tonic-gate
55727f7c583Smyers ACPI_FUNCTION_NAME (DsObjStackPopAndDelete);
5587c478bd9Sstevel@tonic-gate
5597c478bd9Sstevel@tonic-gate
560db2bae30SDana Myers if (PopCount == 0)
5617c478bd9Sstevel@tonic-gate {
562db2bae30SDana Myers return;
563db2bae30SDana Myers }
5647c478bd9Sstevel@tonic-gate
565db2bae30SDana Myers for (i = (INT32) PopCount - 1; i >= 0; i--)
566db2bae30SDana Myers {
5677c478bd9Sstevel@tonic-gate if (WalkState->NumOperands == 0)
5687c478bd9Sstevel@tonic-gate {
569db2bae30SDana Myers return;
5707c478bd9Sstevel@tonic-gate }
5717c478bd9Sstevel@tonic-gate
5727c478bd9Sstevel@tonic-gate /* Pop the stack and delete an object if present in this stack entry */
5737c478bd9Sstevel@tonic-gate
5747c478bd9Sstevel@tonic-gate WalkState->NumOperands--;
575db2bae30SDana Myers ObjDesc = WalkState->Operands [i];
5767c478bd9Sstevel@tonic-gate if (ObjDesc)
5777c478bd9Sstevel@tonic-gate {
578db2bae30SDana Myers AcpiUtRemoveReference (WalkState->Operands [i]);
579db2bae30SDana Myers WalkState->Operands [i] = NULL;
5807c478bd9Sstevel@tonic-gate }
5817c478bd9Sstevel@tonic-gate }
5827c478bd9Sstevel@tonic-gate
5837c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%X\n",
584db2bae30SDana Myers PopCount, WalkState, WalkState->NumOperands));
5857c478bd9Sstevel@tonic-gate }
5867c478bd9Sstevel@tonic-gate
5877c478bd9Sstevel@tonic-gate
5887c478bd9Sstevel@tonic-gate /*******************************************************************************
5897c478bd9Sstevel@tonic-gate *
5907c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsGetCurrentWalkState
5917c478bd9Sstevel@tonic-gate *
5927c478bd9Sstevel@tonic-gate * PARAMETERS: Thread - Get current active state for this Thread
5937c478bd9Sstevel@tonic-gate *
5947c478bd9Sstevel@tonic-gate * RETURN: Pointer to the current walk state
5957c478bd9Sstevel@tonic-gate *
5967c478bd9Sstevel@tonic-gate * DESCRIPTION: Get the walk state that is at the head of the list (the "current"
5977c478bd9Sstevel@tonic-gate * walk state.)
5987c478bd9Sstevel@tonic-gate *
5997c478bd9Sstevel@tonic-gate ******************************************************************************/
6007c478bd9Sstevel@tonic-gate
6017c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *
AcpiDsGetCurrentWalkState(ACPI_THREAD_STATE * Thread)6027c478bd9Sstevel@tonic-gate AcpiDsGetCurrentWalkState (
6037c478bd9Sstevel@tonic-gate ACPI_THREAD_STATE *Thread)
6047c478bd9Sstevel@tonic-gate {
60527f7c583Smyers ACPI_FUNCTION_NAME (DsGetCurrentWalkState);
6067c478bd9Sstevel@tonic-gate
6077c478bd9Sstevel@tonic-gate
6087c478bd9Sstevel@tonic-gate if (!Thread)
6097c478bd9Sstevel@tonic-gate {
6107c478bd9Sstevel@tonic-gate return (NULL);
6117c478bd9Sstevel@tonic-gate }
6127c478bd9Sstevel@tonic-gate
6137c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Current WalkState %p\n",
6147c478bd9Sstevel@tonic-gate Thread->WalkStateList));
6157c478bd9Sstevel@tonic-gate
6167c478bd9Sstevel@tonic-gate return (Thread->WalkStateList);
6177c478bd9Sstevel@tonic-gate }
6187c478bd9Sstevel@tonic-gate
6197c478bd9Sstevel@tonic-gate
6207c478bd9Sstevel@tonic-gate /*******************************************************************************
6217c478bd9Sstevel@tonic-gate *
6227c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsPushWalkState
6237c478bd9Sstevel@tonic-gate *
6247c478bd9Sstevel@tonic-gate * PARAMETERS: WalkState - State to push
6257c478bd9Sstevel@tonic-gate * Thread - Thread state object
6267c478bd9Sstevel@tonic-gate *
6277c478bd9Sstevel@tonic-gate * RETURN: None
6287c478bd9Sstevel@tonic-gate *
629db2bae30SDana Myers * DESCRIPTION: Place the Thread state at the head of the state list
6307c478bd9Sstevel@tonic-gate *
6317c478bd9Sstevel@tonic-gate ******************************************************************************/
6327c478bd9Sstevel@tonic-gate
6337c478bd9Sstevel@tonic-gate void
AcpiDsPushWalkState(ACPI_WALK_STATE * WalkState,ACPI_THREAD_STATE * Thread)6347c478bd9Sstevel@tonic-gate AcpiDsPushWalkState (
6357c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState,
6367c478bd9Sstevel@tonic-gate ACPI_THREAD_STATE *Thread)
6377c478bd9Sstevel@tonic-gate {
63827f7c583Smyers ACPI_FUNCTION_TRACE (DsPushWalkState);
6397c478bd9Sstevel@tonic-gate
6407c478bd9Sstevel@tonic-gate
641db2bae30SDana Myers WalkState->Next = Thread->WalkStateList;
6427c478bd9Sstevel@tonic-gate Thread->WalkStateList = WalkState;
6437c478bd9Sstevel@tonic-gate
6447c478bd9Sstevel@tonic-gate return_VOID;
6457c478bd9Sstevel@tonic-gate }
6467c478bd9Sstevel@tonic-gate
6477c478bd9Sstevel@tonic-gate
6487c478bd9Sstevel@tonic-gate /*******************************************************************************
6497c478bd9Sstevel@tonic-gate *
6507c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsPopWalkState
6517c478bd9Sstevel@tonic-gate *
6527c478bd9Sstevel@tonic-gate * PARAMETERS: Thread - Current thread state
6537c478bd9Sstevel@tonic-gate *
6547c478bd9Sstevel@tonic-gate * RETURN: A WalkState object popped from the thread's stack
6557c478bd9Sstevel@tonic-gate *
6567c478bd9Sstevel@tonic-gate * DESCRIPTION: Remove and return the walkstate object that is at the head of
6577b1019a6SJerry Jelinek * the walk stack for the given walk list. NULL indicates that
6587c478bd9Sstevel@tonic-gate * the list is empty.
6597c478bd9Sstevel@tonic-gate *
6607c478bd9Sstevel@tonic-gate ******************************************************************************/
6617c478bd9Sstevel@tonic-gate
6627c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *
AcpiDsPopWalkState(ACPI_THREAD_STATE * Thread)6637c478bd9Sstevel@tonic-gate AcpiDsPopWalkState (
6647c478bd9Sstevel@tonic-gate ACPI_THREAD_STATE *Thread)
6657c478bd9Sstevel@tonic-gate {
6667c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState;
6677c478bd9Sstevel@tonic-gate
6687c478bd9Sstevel@tonic-gate
66927f7c583Smyers ACPI_FUNCTION_TRACE (DsPopWalkState);
6707c478bd9Sstevel@tonic-gate
6717c478bd9Sstevel@tonic-gate
6727c478bd9Sstevel@tonic-gate WalkState = Thread->WalkStateList;
6737c478bd9Sstevel@tonic-gate
6747c478bd9Sstevel@tonic-gate if (WalkState)
6757c478bd9Sstevel@tonic-gate {
6767c478bd9Sstevel@tonic-gate /* Next walk state becomes the current walk state */
6777c478bd9Sstevel@tonic-gate
6787c478bd9Sstevel@tonic-gate Thread->WalkStateList = WalkState->Next;
6797c478bd9Sstevel@tonic-gate
6807c478bd9Sstevel@tonic-gate /*
6817c478bd9Sstevel@tonic-gate * Don't clear the NEXT field, this serves as an indicator
6827c478bd9Sstevel@tonic-gate * that there is a parent WALK STATE
6837c478bd9Sstevel@tonic-gate * Do Not: WalkState->Next = NULL;
6847c478bd9Sstevel@tonic-gate */
6857c478bd9Sstevel@tonic-gate }
6867c478bd9Sstevel@tonic-gate
6877c478bd9Sstevel@tonic-gate return_PTR (WalkState);
6887c478bd9Sstevel@tonic-gate }
6897c478bd9Sstevel@tonic-gate
6907c478bd9Sstevel@tonic-gate
6917c478bd9Sstevel@tonic-gate /*******************************************************************************
6927c478bd9Sstevel@tonic-gate *
6937c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsCreateWalkState
6947c478bd9Sstevel@tonic-gate *
6957c478bd9Sstevel@tonic-gate * PARAMETERS: OwnerId - ID for object creation
6967c478bd9Sstevel@tonic-gate * Origin - Starting point for this walk
69727f7c583Smyers * MethodDesc - Method object
6987c478bd9Sstevel@tonic-gate * Thread - Current thread state
6997c478bd9Sstevel@tonic-gate *
7007c478bd9Sstevel@tonic-gate * RETURN: Pointer to the new walk state.
7017c478bd9Sstevel@tonic-gate *
7027b1019a6SJerry Jelinek * DESCRIPTION: Allocate and initialize a new walk state. The current walk
7037c478bd9Sstevel@tonic-gate * state is set to this new state.
7047c478bd9Sstevel@tonic-gate *
7057c478bd9Sstevel@tonic-gate ******************************************************************************/
7067c478bd9Sstevel@tonic-gate
7077c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *
AcpiDsCreateWalkState(ACPI_OWNER_ID OwnerId,ACPI_PARSE_OBJECT * Origin,ACPI_OPERAND_OBJECT * MethodDesc,ACPI_THREAD_STATE * Thread)7087c478bd9Sstevel@tonic-gate AcpiDsCreateWalkState (
7097c478bd9Sstevel@tonic-gate ACPI_OWNER_ID OwnerId,
7107c478bd9Sstevel@tonic-gate ACPI_PARSE_OBJECT *Origin,
71127f7c583Smyers ACPI_OPERAND_OBJECT *MethodDesc,
7127c478bd9Sstevel@tonic-gate ACPI_THREAD_STATE *Thread)
7137c478bd9Sstevel@tonic-gate {
7147c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState;
7157c478bd9Sstevel@tonic-gate
7167c478bd9Sstevel@tonic-gate
71727f7c583Smyers ACPI_FUNCTION_TRACE (DsCreateWalkState);
7187c478bd9Sstevel@tonic-gate
7197c478bd9Sstevel@tonic-gate
72027f7c583Smyers WalkState = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_WALK_STATE));
7217c478bd9Sstevel@tonic-gate if (!WalkState)
7227c478bd9Sstevel@tonic-gate {
7237c478bd9Sstevel@tonic-gate return_PTR (NULL);
7247c478bd9Sstevel@tonic-gate }
7257c478bd9Sstevel@tonic-gate
72627f7c583Smyers WalkState->DescriptorType = ACPI_DESC_TYPE_WALK;
72727f7c583Smyers WalkState->MethodDesc = MethodDesc;
72827f7c583Smyers WalkState->OwnerId = OwnerId;
72927f7c583Smyers WalkState->Origin = Origin;
73027f7c583Smyers WalkState->Thread = Thread;
7317c478bd9Sstevel@tonic-gate
7327c478bd9Sstevel@tonic-gate WalkState->ParserState.StartOp = Origin;
7337c478bd9Sstevel@tonic-gate
7347c478bd9Sstevel@tonic-gate /* Init the method args/local */
7357c478bd9Sstevel@tonic-gate
7367c478bd9Sstevel@tonic-gate #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
7377c478bd9Sstevel@tonic-gate AcpiDsMethodDataInit (WalkState);
7387c478bd9Sstevel@tonic-gate #endif
7397c478bd9Sstevel@tonic-gate
7407c478bd9Sstevel@tonic-gate /* Put the new state at the head of the walk list */
7417c478bd9Sstevel@tonic-gate
7427c478bd9Sstevel@tonic-gate if (Thread)
7437c478bd9Sstevel@tonic-gate {
7447c478bd9Sstevel@tonic-gate AcpiDsPushWalkState (WalkState, Thread);
7457c478bd9Sstevel@tonic-gate }
7467c478bd9Sstevel@tonic-gate
7477c478bd9Sstevel@tonic-gate return_PTR (WalkState);
7487c478bd9Sstevel@tonic-gate }
7497c478bd9Sstevel@tonic-gate
7507c478bd9Sstevel@tonic-gate
7517c478bd9Sstevel@tonic-gate /*******************************************************************************
7527c478bd9Sstevel@tonic-gate *
7537c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsInitAmlWalk
7547c478bd9Sstevel@tonic-gate *
7557c478bd9Sstevel@tonic-gate * PARAMETERS: WalkState - New state to be initialized
7567c478bd9Sstevel@tonic-gate * Op - Current parse op
7577c478bd9Sstevel@tonic-gate * MethodNode - Control method NS node, if any
7587c478bd9Sstevel@tonic-gate * AmlStart - Start of AML
7597c478bd9Sstevel@tonic-gate * AmlLength - Length of AML
7607c478bd9Sstevel@tonic-gate * Info - Method info block (params, etc.)
7617c478bd9Sstevel@tonic-gate * PassNumber - 1, 2, or 3
7627c478bd9Sstevel@tonic-gate *
7637c478bd9Sstevel@tonic-gate * RETURN: Status
7647c478bd9Sstevel@tonic-gate *
7657c478bd9Sstevel@tonic-gate * DESCRIPTION: Initialize a walk state for a pass 1 or 2 parse tree walk
7667c478bd9Sstevel@tonic-gate *
7677c478bd9Sstevel@tonic-gate ******************************************************************************/
7687c478bd9Sstevel@tonic-gate
7697c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiDsInitAmlWalk(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op,ACPI_NAMESPACE_NODE * MethodNode,UINT8 * AmlStart,UINT32 AmlLength,ACPI_EVALUATE_INFO * Info,UINT8 PassNumber)7707c478bd9Sstevel@tonic-gate AcpiDsInitAmlWalk (
7717c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState,
7727c478bd9Sstevel@tonic-gate ACPI_PARSE_OBJECT *Op,
7737c478bd9Sstevel@tonic-gate ACPI_NAMESPACE_NODE *MethodNode,
7747c478bd9Sstevel@tonic-gate UINT8 *AmlStart,
7757c478bd9Sstevel@tonic-gate UINT32 AmlLength,
77627f7c583Smyers ACPI_EVALUATE_INFO *Info,
777186507a7Smyers UINT8 PassNumber)
7787c478bd9Sstevel@tonic-gate {
7797c478bd9Sstevel@tonic-gate ACPI_STATUS Status;
7807c478bd9Sstevel@tonic-gate ACPI_PARSE_STATE *ParserState = &WalkState->ParserState;
7817c478bd9Sstevel@tonic-gate ACPI_PARSE_OBJECT *ExtraOp;
7827c478bd9Sstevel@tonic-gate
7837c478bd9Sstevel@tonic-gate
78427f7c583Smyers ACPI_FUNCTION_TRACE (DsInitAmlWalk);
7857c478bd9Sstevel@tonic-gate
7867c478bd9Sstevel@tonic-gate
78727f7c583Smyers WalkState->ParserState.Aml =
7887c478bd9Sstevel@tonic-gate WalkState->ParserState.AmlStart = AmlStart;
78927f7c583Smyers WalkState->ParserState.AmlEnd =
79027f7c583Smyers WalkState->ParserState.PkgEnd = AmlStart + AmlLength;
7917c478bd9Sstevel@tonic-gate
7927c478bd9Sstevel@tonic-gate /* The NextOp of the NextWalk will be the beginning of the method */
7937c478bd9Sstevel@tonic-gate
7947c478bd9Sstevel@tonic-gate WalkState->NextOp = NULL;
795186507a7Smyers WalkState->PassNumber = PassNumber;
7967c478bd9Sstevel@tonic-gate
7977c478bd9Sstevel@tonic-gate if (Info)
7987c478bd9Sstevel@tonic-gate {
799db2bae30SDana Myers WalkState->Params = Info->Parameters;
800db2bae30SDana Myers WalkState->CallerReturnDesc = &Info->ReturnObject;
8017c478bd9Sstevel@tonic-gate }
8027c478bd9Sstevel@tonic-gate
8037c478bd9Sstevel@tonic-gate Status = AcpiPsInitScope (&WalkState->ParserState, Op);
8047c478bd9Sstevel@tonic-gate if (ACPI_FAILURE (Status))
8057c478bd9Sstevel@tonic-gate {
8067c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
8077c478bd9Sstevel@tonic-gate }
8087c478bd9Sstevel@tonic-gate
8097c478bd9Sstevel@tonic-gate if (MethodNode)
8107c478bd9Sstevel@tonic-gate {
8117c478bd9Sstevel@tonic-gate WalkState->ParserState.StartNode = MethodNode;
81227f7c583Smyers WalkState->WalkType = ACPI_WALK_METHOD;
81327f7c583Smyers WalkState->MethodNode = MethodNode;
81427f7c583Smyers WalkState->MethodDesc = AcpiNsGetAttachedObject (MethodNode);
8157c478bd9Sstevel@tonic-gate
8167c478bd9Sstevel@tonic-gate /* Push start scope on scope stack and make it current */
8177c478bd9Sstevel@tonic-gate
8187b1019a6SJerry Jelinek Status = AcpiDsScopeStackPush (
8197b1019a6SJerry Jelinek MethodNode, ACPI_TYPE_METHOD, WalkState);
8207c478bd9Sstevel@tonic-gate if (ACPI_FAILURE (Status))
8217c478bd9Sstevel@tonic-gate {
8227c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
8237c478bd9Sstevel@tonic-gate }
8247c478bd9Sstevel@tonic-gate
8257c478bd9Sstevel@tonic-gate /* Init the method arguments */
8267c478bd9Sstevel@tonic-gate
8277c478bd9Sstevel@tonic-gate Status = AcpiDsMethodDataInitArgs (WalkState->Params,
8287c478bd9Sstevel@tonic-gate ACPI_METHOD_NUM_ARGS, WalkState);
8297c478bd9Sstevel@tonic-gate if (ACPI_FAILURE (Status))
8307c478bd9Sstevel@tonic-gate {
8317c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
8327c478bd9Sstevel@tonic-gate }
8337c478bd9Sstevel@tonic-gate }
8347c478bd9Sstevel@tonic-gate else
8357c478bd9Sstevel@tonic-gate {
8367c478bd9Sstevel@tonic-gate /*
8377c478bd9Sstevel@tonic-gate * Setup the current scope.
8387c478bd9Sstevel@tonic-gate * Find a Named Op that has a namespace node associated with it.
8397b1019a6SJerry Jelinek * search upwards from this Op. Current scope is the first
8407c478bd9Sstevel@tonic-gate * Op with a namespace node.
8417c478bd9Sstevel@tonic-gate */
8427c478bd9Sstevel@tonic-gate ExtraOp = ParserState->StartOp;
8437c478bd9Sstevel@tonic-gate while (ExtraOp && !ExtraOp->Common.Node)
8447c478bd9Sstevel@tonic-gate {
8457c478bd9Sstevel@tonic-gate ExtraOp = ExtraOp->Common.Parent;
8467c478bd9Sstevel@tonic-gate }
8477c478bd9Sstevel@tonic-gate
8487c478bd9Sstevel@tonic-gate if (!ExtraOp)
8497c478bd9Sstevel@tonic-gate {
8507c478bd9Sstevel@tonic-gate ParserState->StartNode = NULL;
8517c478bd9Sstevel@tonic-gate }
8527c478bd9Sstevel@tonic-gate else
8537c478bd9Sstevel@tonic-gate {
8547c478bd9Sstevel@tonic-gate ParserState->StartNode = ExtraOp->Common.Node;
8557c478bd9Sstevel@tonic-gate }
8567c478bd9Sstevel@tonic-gate
8577c478bd9Sstevel@tonic-gate if (ParserState->StartNode)
8587c478bd9Sstevel@tonic-gate {
8597c478bd9Sstevel@tonic-gate /* Push start scope on scope stack and make it current */
8607c478bd9Sstevel@tonic-gate
8617c478bd9Sstevel@tonic-gate Status = AcpiDsScopeStackPush (ParserState->StartNode,
8627b1019a6SJerry Jelinek ParserState->StartNode->Type, WalkState);
8637c478bd9Sstevel@tonic-gate if (ACPI_FAILURE (Status))
8647c478bd9Sstevel@tonic-gate {
8657c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
8667c478bd9Sstevel@tonic-gate }
8677c478bd9Sstevel@tonic-gate }
8687c478bd9Sstevel@tonic-gate }
8697c478bd9Sstevel@tonic-gate
8707c478bd9Sstevel@tonic-gate Status = AcpiDsInitCallbacks (WalkState, PassNumber);
8717c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
8727c478bd9Sstevel@tonic-gate }
8737c478bd9Sstevel@tonic-gate
8747c478bd9Sstevel@tonic-gate
8757c478bd9Sstevel@tonic-gate /*******************************************************************************
8767c478bd9Sstevel@tonic-gate *
8777c478bd9Sstevel@tonic-gate * FUNCTION: AcpiDsDeleteWalkState
8787c478bd9Sstevel@tonic-gate *
8797c478bd9Sstevel@tonic-gate * PARAMETERS: WalkState - State to delete
8807c478bd9Sstevel@tonic-gate *
8817c478bd9Sstevel@tonic-gate * RETURN: Status
8827c478bd9Sstevel@tonic-gate *
8837c478bd9Sstevel@tonic-gate * DESCRIPTION: Delete a walk state including all internal data structures
8847c478bd9Sstevel@tonic-gate *
8857c478bd9Sstevel@tonic-gate ******************************************************************************/
8867c478bd9Sstevel@tonic-gate
8877c478bd9Sstevel@tonic-gate void
AcpiDsDeleteWalkState(ACPI_WALK_STATE * WalkState)8887c478bd9Sstevel@tonic-gate AcpiDsDeleteWalkState (
8897c478bd9Sstevel@tonic-gate ACPI_WALK_STATE *WalkState)
8907c478bd9Sstevel@tonic-gate {
8917c478bd9Sstevel@tonic-gate ACPI_GENERIC_STATE *State;
8927c478bd9Sstevel@tonic-gate
8937c478bd9Sstevel@tonic-gate
89427f7c583Smyers ACPI_FUNCTION_TRACE_PTR (DsDeleteWalkState, WalkState);
8957c478bd9Sstevel@tonic-gate
8967c478bd9Sstevel@tonic-gate
8977c478bd9Sstevel@tonic-gate if (!WalkState)
8987c478bd9Sstevel@tonic-gate {
8997b1019a6SJerry Jelinek return_VOID;
9007c478bd9Sstevel@tonic-gate }
9017c478bd9Sstevel@tonic-gate
90227f7c583Smyers if (WalkState->DescriptorType != ACPI_DESC_TYPE_WALK)
9037c478bd9Sstevel@tonic-gate {
90430082d0cSmyers ACPI_ERROR ((AE_INFO, "%p is not a valid walk state",
9057c478bd9Sstevel@tonic-gate WalkState));
9067b1019a6SJerry Jelinek return_VOID;
9077c478bd9Sstevel@tonic-gate }
9087c478bd9Sstevel@tonic-gate
90927f7c583Smyers /* There should not be any open scopes */
91027f7c583Smyers
9117c478bd9Sstevel@tonic-gate if (WalkState->ParserState.Scope)
9127c478bd9Sstevel@tonic-gate {
91330082d0cSmyers ACPI_ERROR ((AE_INFO, "%p walk still has a scope list",
9147c478bd9Sstevel@tonic-gate WalkState));
91527f7c583Smyers AcpiPsCleanupScope (&WalkState->ParserState);
9167c478bd9Sstevel@tonic-gate }
9177c478bd9Sstevel@tonic-gate
9187c478bd9Sstevel@tonic-gate /* Always must free any linked control states */
9197c478bd9Sstevel@tonic-gate
9207c478bd9Sstevel@tonic-gate while (WalkState->ControlState)
9217c478bd9Sstevel@tonic-gate {
9227c478bd9Sstevel@tonic-gate State = WalkState->ControlState;
9237c478bd9Sstevel@tonic-gate WalkState->ControlState = State->Common.Next;
9247c478bd9Sstevel@tonic-gate
9257c478bd9Sstevel@tonic-gate AcpiUtDeleteGenericState (State);
9267c478bd9Sstevel@tonic-gate }
9277c478bd9Sstevel@tonic-gate
9287c478bd9Sstevel@tonic-gate /* Always must free any linked parse states */
9297c478bd9Sstevel@tonic-gate
9307c478bd9Sstevel@tonic-gate while (WalkState->ScopeInfo)
9317c478bd9Sstevel@tonic-gate {
9327c478bd9Sstevel@tonic-gate State = WalkState->ScopeInfo;
9337c478bd9Sstevel@tonic-gate WalkState->ScopeInfo = State->Common.Next;
9347c478bd9Sstevel@tonic-gate
9357c478bd9Sstevel@tonic-gate AcpiUtDeleteGenericState (State);
9367c478bd9Sstevel@tonic-gate }
9377c478bd9Sstevel@tonic-gate
9387c478bd9Sstevel@tonic-gate /* Always must free any stacked result states */
9397c478bd9Sstevel@tonic-gate
9407c478bd9Sstevel@tonic-gate while (WalkState->Results)
9417c478bd9Sstevel@tonic-gate {
9427c478bd9Sstevel@tonic-gate State = WalkState->Results;
9437c478bd9Sstevel@tonic-gate WalkState->Results = State->Common.Next;
9447c478bd9Sstevel@tonic-gate
9457c478bd9Sstevel@tonic-gate AcpiUtDeleteGenericState (State);
9467c478bd9Sstevel@tonic-gate }
9477c478bd9Sstevel@tonic-gate
94827f7c583Smyers ACPI_FREE (WalkState);
9497c478bd9Sstevel@tonic-gate return_VOID;
9507c478bd9Sstevel@tonic-gate }
951