1/*******************************************************************************
2 *
3 * Module Name: dsmthdat - control method arguments and local variables
| 1/*******************************************************************************
2 *
3 * Module Name: dsmthdat - control method arguments and local variables
|
4 * $Revision: 74 $
| 4 * $Revision: 77 $
|
5 *
6 ******************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
| 5 *
6 ******************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
|
12 * Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp.
| 12 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
|
13 * All rights reserved.
14 *
15 * 2. License
16 *
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
20 * property rights.
21 *
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
28 *
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;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
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.
54 *
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
65 * make.
66 *
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
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
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.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
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
89 * PARTICULAR PURPOSE.
90 *
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
98 * LIMITED REMEDY.
99 *
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.
114 *
115 *****************************************************************************/
116
117#define __DSMTHDAT_C__
118
119#include "acpi.h"
120#include "acdispat.h"
121#include "amlcode.h"
122#include "acnamesp.h"
123#include "acinterp.h"
124
125
126#define _COMPONENT ACPI_DISPATCHER
127 ACPI_MODULE_NAME ("dsmthdat")
128
129
130/*******************************************************************************
131 *
132 * FUNCTION: AcpiDsMethodDataInit
133 *
134 * PARAMETERS: WalkState - Current walk state object
135 *
136 * RETURN: Status
137 *
138 * DESCRIPTION: Initialize the data structures that hold the method's arguments
139 * and locals. The data struct is an array of NTEs for each.
140 * This allows RefOf and DeRefOf to work properly for these
141 * special data types.
142 *
143 * NOTES: WalkState fields are initialized to zero by the
144 * ACPI_MEM_CALLOCATE().
145 *
146 * A pseudo-Namespace Node is assigned to each argument and local
147 * so that RefOf() can return a pointer to the Node.
148 *
149 ******************************************************************************/
150
151void
152AcpiDsMethodDataInit (
153 ACPI_WALK_STATE *WalkState)
154{
155 UINT32 i;
156
157
158 ACPI_FUNCTION_TRACE ("DsMethodDataInit");
159
160
161 /* Init the method arguments */
162
163 for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
164 {
165 ACPI_MOVE_32_TO_32 (&WalkState->Arguments[i].Name,
166 NAMEOF_ARG_NTE);
167 WalkState->Arguments[i].Name.Integer |= (i << 24);
168 WalkState->Arguments[i].Descriptor = ACPI_DESC_TYPE_NAMED;
169 WalkState->Arguments[i].Type = ACPI_TYPE_ANY;
170 WalkState->Arguments[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG;
171 }
172
173 /* Init the method locals */
174
175 for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
176 {
177 ACPI_MOVE_32_TO_32 (&WalkState->LocalVariables[i].Name,
178 NAMEOF_LOCAL_NTE);
179
180 WalkState->LocalVariables[i].Name.Integer |= (i << 24);
181 WalkState->LocalVariables[i].Descriptor = ACPI_DESC_TYPE_NAMED;
182 WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
183 WalkState->LocalVariables[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
184 }
185
186 return_VOID;
187}
188
189
190/*******************************************************************************
191 *
192 * FUNCTION: AcpiDsMethodDataDeleteAll
193 *
194 * PARAMETERS: WalkState - Current walk state object
195 *
196 * RETURN: None
197 *
198 * DESCRIPTION: Delete method locals and arguments. Arguments are only
199 * deleted if this method was called from another method.
200 *
201 ******************************************************************************/
202
203void
204AcpiDsMethodDataDeleteAll (
205 ACPI_WALK_STATE *WalkState)
206{
207 UINT32 Index;
208
209
210 ACPI_FUNCTION_TRACE ("DsMethodDataDeleteAll");
211
212
213 /* Detach the locals */
214
215 for (Index = 0; Index < ACPI_METHOD_NUM_LOCALS; Index++)
216 {
217 if (WalkState->LocalVariables[Index].Object)
218 {
219 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%d=%p\n",
220 Index, WalkState->LocalVariables[Index].Object));
221
222 /* Detach object (if present) and remove a reference */
223
224 AcpiNsDetachObject (&WalkState->LocalVariables[Index]);
225 }
226 }
227
228 /* Detach the arguments */
229
230 for (Index = 0; Index < ACPI_METHOD_NUM_ARGS; Index++)
231 {
232 if (WalkState->Arguments[Index].Object)
233 {
234 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%d=%p\n",
235 Index, WalkState->Arguments[Index].Object));
236
237 /* Detach object (if present) and remove a reference */
238
239 AcpiNsDetachObject (&WalkState->Arguments[Index]);
240 }
241 }
242
243 return_VOID;
244}
245
246
247/*******************************************************************************
248 *
249 * FUNCTION: AcpiDsMethodDataInitArgs
250 *
251 * PARAMETERS: *Params - Pointer to a parameter list for the method
252 * MaxParamCount - The arg count for this method
253 * WalkState - Current walk state object
254 *
255 * RETURN: Status
256 *
257 * DESCRIPTION: Initialize arguments for a method. The parameter list is a list
258 * of ACPI operand objects, either null terminated or whose length
259 * is defined by MaxParamCount.
260 *
261 ******************************************************************************/
262
263ACPI_STATUS
264AcpiDsMethodDataInitArgs (
265 ACPI_OPERAND_OBJECT **Params,
266 UINT32 MaxParamCount,
267 ACPI_WALK_STATE *WalkState)
268{
269 ACPI_STATUS Status;
270 UINT32 Index = 0;
271
272
273 ACPI_FUNCTION_TRACE_PTR ("DsMethodDataInitArgs", Params);
274
275
276 if (!Params)
277 {
278 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n"));
279 return_ACPI_STATUS (AE_OK);
280 }
281
282 /* Copy passed parameters into the new method stack frame */
283
284 while ((Index < ACPI_METHOD_NUM_ARGS) && (Index < MaxParamCount) && Params[Index])
285 {
286 /*
287 * A valid parameter.
| 13 * All rights reserved.
14 *
15 * 2. License
16 *
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
20 * property rights.
21 *
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
28 *
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;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
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.
54 *
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
65 * make.
66 *
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
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
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.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
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
89 * PARTICULAR PURPOSE.
90 *
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
98 * LIMITED REMEDY.
99 *
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.
114 *
115 *****************************************************************************/
116
117#define __DSMTHDAT_C__
118
119#include "acpi.h"
120#include "acdispat.h"
121#include "amlcode.h"
122#include "acnamesp.h"
123#include "acinterp.h"
124
125
126#define _COMPONENT ACPI_DISPATCHER
127 ACPI_MODULE_NAME ("dsmthdat")
128
129
130/*******************************************************************************
131 *
132 * FUNCTION: AcpiDsMethodDataInit
133 *
134 * PARAMETERS: WalkState - Current walk state object
135 *
136 * RETURN: Status
137 *
138 * DESCRIPTION: Initialize the data structures that hold the method's arguments
139 * and locals. The data struct is an array of NTEs for each.
140 * This allows RefOf and DeRefOf to work properly for these
141 * special data types.
142 *
143 * NOTES: WalkState fields are initialized to zero by the
144 * ACPI_MEM_CALLOCATE().
145 *
146 * A pseudo-Namespace Node is assigned to each argument and local
147 * so that RefOf() can return a pointer to the Node.
148 *
149 ******************************************************************************/
150
151void
152AcpiDsMethodDataInit (
153 ACPI_WALK_STATE *WalkState)
154{
155 UINT32 i;
156
157
158 ACPI_FUNCTION_TRACE ("DsMethodDataInit");
159
160
161 /* Init the method arguments */
162
163 for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
164 {
165 ACPI_MOVE_32_TO_32 (&WalkState->Arguments[i].Name,
166 NAMEOF_ARG_NTE);
167 WalkState->Arguments[i].Name.Integer |= (i << 24);
168 WalkState->Arguments[i].Descriptor = ACPI_DESC_TYPE_NAMED;
169 WalkState->Arguments[i].Type = ACPI_TYPE_ANY;
170 WalkState->Arguments[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG;
171 }
172
173 /* Init the method locals */
174
175 for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
176 {
177 ACPI_MOVE_32_TO_32 (&WalkState->LocalVariables[i].Name,
178 NAMEOF_LOCAL_NTE);
179
180 WalkState->LocalVariables[i].Name.Integer |= (i << 24);
181 WalkState->LocalVariables[i].Descriptor = ACPI_DESC_TYPE_NAMED;
182 WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
183 WalkState->LocalVariables[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
184 }
185
186 return_VOID;
187}
188
189
190/*******************************************************************************
191 *
192 * FUNCTION: AcpiDsMethodDataDeleteAll
193 *
194 * PARAMETERS: WalkState - Current walk state object
195 *
196 * RETURN: None
197 *
198 * DESCRIPTION: Delete method locals and arguments. Arguments are only
199 * deleted if this method was called from another method.
200 *
201 ******************************************************************************/
202
203void
204AcpiDsMethodDataDeleteAll (
205 ACPI_WALK_STATE *WalkState)
206{
207 UINT32 Index;
208
209
210 ACPI_FUNCTION_TRACE ("DsMethodDataDeleteAll");
211
212
213 /* Detach the locals */
214
215 for (Index = 0; Index < ACPI_METHOD_NUM_LOCALS; Index++)
216 {
217 if (WalkState->LocalVariables[Index].Object)
218 {
219 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%d=%p\n",
220 Index, WalkState->LocalVariables[Index].Object));
221
222 /* Detach object (if present) and remove a reference */
223
224 AcpiNsDetachObject (&WalkState->LocalVariables[Index]);
225 }
226 }
227
228 /* Detach the arguments */
229
230 for (Index = 0; Index < ACPI_METHOD_NUM_ARGS; Index++)
231 {
232 if (WalkState->Arguments[Index].Object)
233 {
234 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%d=%p\n",
235 Index, WalkState->Arguments[Index].Object));
236
237 /* Detach object (if present) and remove a reference */
238
239 AcpiNsDetachObject (&WalkState->Arguments[Index]);
240 }
241 }
242
243 return_VOID;
244}
245
246
247/*******************************************************************************
248 *
249 * FUNCTION: AcpiDsMethodDataInitArgs
250 *
251 * PARAMETERS: *Params - Pointer to a parameter list for the method
252 * MaxParamCount - The arg count for this method
253 * WalkState - Current walk state object
254 *
255 * RETURN: Status
256 *
257 * DESCRIPTION: Initialize arguments for a method. The parameter list is a list
258 * of ACPI operand objects, either null terminated or whose length
259 * is defined by MaxParamCount.
260 *
261 ******************************************************************************/
262
263ACPI_STATUS
264AcpiDsMethodDataInitArgs (
265 ACPI_OPERAND_OBJECT **Params,
266 UINT32 MaxParamCount,
267 ACPI_WALK_STATE *WalkState)
268{
269 ACPI_STATUS Status;
270 UINT32 Index = 0;
271
272
273 ACPI_FUNCTION_TRACE_PTR ("DsMethodDataInitArgs", Params);
274
275
276 if (!Params)
277 {
278 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n"));
279 return_ACPI_STATUS (AE_OK);
280 }
281
282 /* Copy passed parameters into the new method stack frame */
283
284 while ((Index < ACPI_METHOD_NUM_ARGS) && (Index < MaxParamCount) && Params[Index])
285 {
286 /*
287 * A valid parameter.
|
288 * Store the argument in the method/walk descriptor
| 288 * Store the argument in the method/walk descriptor.
289 * Do not copy the arg in order to implement call by reference
|
289 */
| 290 */
|
290 Status = AcpiDsStoreObjectToLocal (AML_ARG_OP, Index, Params[Index],
291 WalkState);
| 291 Status = AcpiDsMethodDataSetValue (AML_ARG_OP, Index, Params[Index], WalkState);
|
292 if (ACPI_FAILURE (Status))
293 {
294 return_ACPI_STATUS (Status);
295 }
296
297 Index++;
298 }
299
300 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%d args passed to method\n", Index));
301 return_ACPI_STATUS (AE_OK);
302}
303
304
305/*******************************************************************************
306 *
307 * FUNCTION: AcpiDsMethodDataGetNode
308 *
309 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
310 * Index - Which localVar or argument whose type
311 * to get
312 * WalkState - Current walk state object
313 *
314 * RETURN: Get the Node associated with a local or arg.
315 *
316 ******************************************************************************/
317
318ACPI_STATUS
319AcpiDsMethodDataGetNode (
320 UINT16 Opcode,
321 UINT32 Index,
322 ACPI_WALK_STATE *WalkState,
323 ACPI_NAMESPACE_NODE **Node)
324{
325 ACPI_FUNCTION_TRACE ("DsMethodDataGetNode");
326
327
328 /*
329 * Method Locals and Arguments are supported
330 */
331 switch (Opcode)
332 {
333 case AML_LOCAL_OP:
334
335 if (Index > ACPI_METHOD_MAX_LOCAL)
336 {
337 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Local index %d is invalid (max %d)\n",
338 Index, ACPI_METHOD_MAX_LOCAL));
339 return_ACPI_STATUS (AE_AML_INVALID_INDEX);
340 }
341
342 /* Return a pointer to the pseudo-node */
343
344 *Node = &WalkState->LocalVariables[Index];
345 break;
346
347 case AML_ARG_OP:
348
349 if (Index > ACPI_METHOD_MAX_ARG)
350 {
351 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
352 Index, ACPI_METHOD_MAX_ARG));
353 return_ACPI_STATUS (AE_AML_INVALID_INDEX);
354 }
355
356 /* Return a pointer to the pseudo-node */
357
358 *Node = &WalkState->Arguments[Index];
359 break;
360
361 default:
362 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", Opcode));
363 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
364 }
365
366 return_ACPI_STATUS (AE_OK);
367}
368
369
370/*******************************************************************************
371 *
372 * FUNCTION: AcpiDsMethodDataSetValue
373 *
374 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
375 * Index - Which localVar or argument to get
376 * Object - Object to be inserted into the stack entry
377 * WalkState - Current walk state object
378 *
379 * RETURN: Status
380 *
381 * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
382 * Note: There is no "implicit conversion" for locals.
383 *
384 ******************************************************************************/
385
386ACPI_STATUS
387AcpiDsMethodDataSetValue (
388 UINT16 Opcode,
389 UINT32 Index,
390 ACPI_OPERAND_OBJECT *Object,
391 ACPI_WALK_STATE *WalkState)
392{
393 ACPI_STATUS Status;
394 ACPI_NAMESPACE_NODE *Node;
395
396
397 ACPI_FUNCTION_TRACE ("DsMethodDataSetValue");
398
399
400 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
401 "obj %p op %X, ref count = %d [%s]\n", Object,
402 Opcode, Object->Common.ReferenceCount,
403 AcpiUtGetTypeName (Object->Common.Type)));
404
405 /* Get the namespace node for the arg/local */
406
407 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
408 if (ACPI_FAILURE (Status))
409 {
410 return_ACPI_STATUS (Status);
411 }
412
413 /*
414 * Increment ref count so object can't be deleted while installed.
415 * NOTE: We do not copy the object in order to preserve the call by
416 * reference semantics of ACPI Control Method invocation.
417 * (See ACPI Specification 2.0C)
418 */
419 AcpiUtAddReference (Object);
420
421 /* Install the object */
422
423 Node->Object = Object;
424 return_ACPI_STATUS (Status);
425}
426
427
428/*******************************************************************************
429 *
430 * FUNCTION: AcpiDsMethodDataGetType
431 *
432 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
433 * Index - Which localVar or argument whose type
434 * to get
435 * WalkState - Current walk state object
436 *
437 * RETURN: Data type of current value of the selected Arg or Local
438 *
439 ******************************************************************************/
440
441ACPI_OBJECT_TYPE
442AcpiDsMethodDataGetType (
443 UINT16 Opcode,
444 UINT32 Index,
445 ACPI_WALK_STATE *WalkState)
446{
447 ACPI_STATUS Status;
448 ACPI_NAMESPACE_NODE *Node;
449 ACPI_OPERAND_OBJECT *Object;
450
451
452 ACPI_FUNCTION_TRACE ("DsMethodDataGetType");
453
454
455 /* Get the namespace node for the arg/local */
456
457 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
458 if (ACPI_FAILURE (Status))
459 {
460 return_VALUE ((ACPI_TYPE_NOT_FOUND));
461 }
462
463 /* Get the object */
464
465 Object = AcpiNsGetAttachedObject (Node);
466 if (!Object)
467 {
468 /* Uninitialized local/arg, return TYPE_ANY */
469
470 return_VALUE (ACPI_TYPE_ANY);
471 }
472
473 /* Get the object type */
474
475 return_VALUE (ACPI_GET_OBJECT_TYPE (Object));
476}
477
478
479/*******************************************************************************
480 *
481 * FUNCTION: AcpiDsMethodDataGetValue
482 *
483 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
484 * Index - Which localVar or argument to get
485 * WalkState - Current walk state object
486 * *DestDesc - Ptr to Descriptor into which selected Arg
487 * or Local value should be copied
488 *
489 * RETURN: Status
490 *
491 * DESCRIPTION: Retrieve value of selected Arg or Local from the method frame
492 * at the current top of the method stack.
493 * Used only in AcpiExResolveToValue().
494 *
495 ******************************************************************************/
496
497ACPI_STATUS
498AcpiDsMethodDataGetValue (
499 UINT16 Opcode,
500 UINT32 Index,
501 ACPI_WALK_STATE *WalkState,
502 ACPI_OPERAND_OBJECT **DestDesc)
503{
504 ACPI_STATUS Status;
505 ACPI_NAMESPACE_NODE *Node;
506 ACPI_OPERAND_OBJECT *Object;
507
508
509 ACPI_FUNCTION_TRACE ("DsMethodDataGetValue");
510
511
512 /* Validate the object descriptor */
513
514 if (!DestDesc)
515 {
516 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null object descriptor pointer\n"));
517 return_ACPI_STATUS (AE_BAD_PARAMETER);
518 }
519
520 /* Get the namespace node for the arg/local */
521
522 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
523 if (ACPI_FAILURE (Status))
524 {
525 return_ACPI_STATUS (Status);
526 }
527
528 /* Get the object from the node */
529
530 Object = Node->Object;
531
532 /* Examine the returned object, it must be valid. */
533
534 if (!Object)
535 {
536 /*
537 * Index points to uninitialized object.
538 * This means that either 1) The expected argument was
539 * not passed to the method, or 2) A local variable
540 * was referenced by the method (via the ASL)
541 * before it was initialized. Either case is an error.
542 */
543 switch (Opcode)
544 {
545 case AML_ARG_OP:
546
547 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Arg[%d] at node %p\n",
548 Index, Node));
549
550 return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
551
552 case AML_LOCAL_OP:
553
554 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at node %p\n",
555 Index, Node));
556
557 return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
558
559 default:
| 292 if (ACPI_FAILURE (Status))
293 {
294 return_ACPI_STATUS (Status);
295 }
296
297 Index++;
298 }
299
300 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%d args passed to method\n", Index));
301 return_ACPI_STATUS (AE_OK);
302}
303
304
305/*******************************************************************************
306 *
307 * FUNCTION: AcpiDsMethodDataGetNode
308 *
309 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
310 * Index - Which localVar or argument whose type
311 * to get
312 * WalkState - Current walk state object
313 *
314 * RETURN: Get the Node associated with a local or arg.
315 *
316 ******************************************************************************/
317
318ACPI_STATUS
319AcpiDsMethodDataGetNode (
320 UINT16 Opcode,
321 UINT32 Index,
322 ACPI_WALK_STATE *WalkState,
323 ACPI_NAMESPACE_NODE **Node)
324{
325 ACPI_FUNCTION_TRACE ("DsMethodDataGetNode");
326
327
328 /*
329 * Method Locals and Arguments are supported
330 */
331 switch (Opcode)
332 {
333 case AML_LOCAL_OP:
334
335 if (Index > ACPI_METHOD_MAX_LOCAL)
336 {
337 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Local index %d is invalid (max %d)\n",
338 Index, ACPI_METHOD_MAX_LOCAL));
339 return_ACPI_STATUS (AE_AML_INVALID_INDEX);
340 }
341
342 /* Return a pointer to the pseudo-node */
343
344 *Node = &WalkState->LocalVariables[Index];
345 break;
346
347 case AML_ARG_OP:
348
349 if (Index > ACPI_METHOD_MAX_ARG)
350 {
351 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
352 Index, ACPI_METHOD_MAX_ARG));
353 return_ACPI_STATUS (AE_AML_INVALID_INDEX);
354 }
355
356 /* Return a pointer to the pseudo-node */
357
358 *Node = &WalkState->Arguments[Index];
359 break;
360
361 default:
362 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", Opcode));
363 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
364 }
365
366 return_ACPI_STATUS (AE_OK);
367}
368
369
370/*******************************************************************************
371 *
372 * FUNCTION: AcpiDsMethodDataSetValue
373 *
374 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
375 * Index - Which localVar or argument to get
376 * Object - Object to be inserted into the stack entry
377 * WalkState - Current walk state object
378 *
379 * RETURN: Status
380 *
381 * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
382 * Note: There is no "implicit conversion" for locals.
383 *
384 ******************************************************************************/
385
386ACPI_STATUS
387AcpiDsMethodDataSetValue (
388 UINT16 Opcode,
389 UINT32 Index,
390 ACPI_OPERAND_OBJECT *Object,
391 ACPI_WALK_STATE *WalkState)
392{
393 ACPI_STATUS Status;
394 ACPI_NAMESPACE_NODE *Node;
395
396
397 ACPI_FUNCTION_TRACE ("DsMethodDataSetValue");
398
399
400 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
401 "obj %p op %X, ref count = %d [%s]\n", Object,
402 Opcode, Object->Common.ReferenceCount,
403 AcpiUtGetTypeName (Object->Common.Type)));
404
405 /* Get the namespace node for the arg/local */
406
407 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
408 if (ACPI_FAILURE (Status))
409 {
410 return_ACPI_STATUS (Status);
411 }
412
413 /*
414 * Increment ref count so object can't be deleted while installed.
415 * NOTE: We do not copy the object in order to preserve the call by
416 * reference semantics of ACPI Control Method invocation.
417 * (See ACPI Specification 2.0C)
418 */
419 AcpiUtAddReference (Object);
420
421 /* Install the object */
422
423 Node->Object = Object;
424 return_ACPI_STATUS (Status);
425}
426
427
428/*******************************************************************************
429 *
430 * FUNCTION: AcpiDsMethodDataGetType
431 *
432 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
433 * Index - Which localVar or argument whose type
434 * to get
435 * WalkState - Current walk state object
436 *
437 * RETURN: Data type of current value of the selected Arg or Local
438 *
439 ******************************************************************************/
440
441ACPI_OBJECT_TYPE
442AcpiDsMethodDataGetType (
443 UINT16 Opcode,
444 UINT32 Index,
445 ACPI_WALK_STATE *WalkState)
446{
447 ACPI_STATUS Status;
448 ACPI_NAMESPACE_NODE *Node;
449 ACPI_OPERAND_OBJECT *Object;
450
451
452 ACPI_FUNCTION_TRACE ("DsMethodDataGetType");
453
454
455 /* Get the namespace node for the arg/local */
456
457 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
458 if (ACPI_FAILURE (Status))
459 {
460 return_VALUE ((ACPI_TYPE_NOT_FOUND));
461 }
462
463 /* Get the object */
464
465 Object = AcpiNsGetAttachedObject (Node);
466 if (!Object)
467 {
468 /* Uninitialized local/arg, return TYPE_ANY */
469
470 return_VALUE (ACPI_TYPE_ANY);
471 }
472
473 /* Get the object type */
474
475 return_VALUE (ACPI_GET_OBJECT_TYPE (Object));
476}
477
478
479/*******************************************************************************
480 *
481 * FUNCTION: AcpiDsMethodDataGetValue
482 *
483 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
484 * Index - Which localVar or argument to get
485 * WalkState - Current walk state object
486 * *DestDesc - Ptr to Descriptor into which selected Arg
487 * or Local value should be copied
488 *
489 * RETURN: Status
490 *
491 * DESCRIPTION: Retrieve value of selected Arg or Local from the method frame
492 * at the current top of the method stack.
493 * Used only in AcpiExResolveToValue().
494 *
495 ******************************************************************************/
496
497ACPI_STATUS
498AcpiDsMethodDataGetValue (
499 UINT16 Opcode,
500 UINT32 Index,
501 ACPI_WALK_STATE *WalkState,
502 ACPI_OPERAND_OBJECT **DestDesc)
503{
504 ACPI_STATUS Status;
505 ACPI_NAMESPACE_NODE *Node;
506 ACPI_OPERAND_OBJECT *Object;
507
508
509 ACPI_FUNCTION_TRACE ("DsMethodDataGetValue");
510
511
512 /* Validate the object descriptor */
513
514 if (!DestDesc)
515 {
516 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null object descriptor pointer\n"));
517 return_ACPI_STATUS (AE_BAD_PARAMETER);
518 }
519
520 /* Get the namespace node for the arg/local */
521
522 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
523 if (ACPI_FAILURE (Status))
524 {
525 return_ACPI_STATUS (Status);
526 }
527
528 /* Get the object from the node */
529
530 Object = Node->Object;
531
532 /* Examine the returned object, it must be valid. */
533
534 if (!Object)
535 {
536 /*
537 * Index points to uninitialized object.
538 * This means that either 1) The expected argument was
539 * not passed to the method, or 2) A local variable
540 * was referenced by the method (via the ASL)
541 * before it was initialized. Either case is an error.
542 */
543 switch (Opcode)
544 {
545 case AML_ARG_OP:
546
547 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Arg[%d] at node %p\n",
548 Index, Node));
549
550 return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
551
552 case AML_LOCAL_OP:
553
554 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at node %p\n",
555 Index, Node));
556
557 return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
558
559 default:
|
| 560 ACPI_REPORT_ERROR (("Not Arg/Local opcode: %X\n", Opcode));
|
560 return_ACPI_STATUS (AE_AML_INTERNAL);
561 }
562 }
563
564 /*
565 * The Index points to an initialized and valid object.
566 * Return an additional reference to the object
567 */
568 *DestDesc = Object;
569 AcpiUtAddReference (Object);
570
571 return_ACPI_STATUS (AE_OK);
572}
573
574
575/*******************************************************************************
576 *
577 * FUNCTION: AcpiDsMethodDataDeleteValue
578 *
579 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
580 * Index - Which localVar or argument to delete
581 * WalkState - Current walk state object
582 *
583 * RETURN: None
584 *
585 * DESCRIPTION: Delete the entry at Opcode:Index on the method stack. Inserts
586 * a null into the stack slot after the object is deleted.
587 *
588 ******************************************************************************/
589
590void
591AcpiDsMethodDataDeleteValue (
592 UINT16 Opcode,
593 UINT32 Index,
594 ACPI_WALK_STATE *WalkState)
595{
596 ACPI_STATUS Status;
597 ACPI_NAMESPACE_NODE *Node;
598 ACPI_OPERAND_OBJECT *Object;
599
600
601 ACPI_FUNCTION_TRACE ("DsMethodDataDeleteValue");
602
603
604 /* Get the namespace node for the arg/local */
605
606 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
607 if (ACPI_FAILURE (Status))
608 {
609 return_VOID;
610 }
611
612 /* Get the associated object */
613
614 Object = AcpiNsGetAttachedObject (Node);
615
616 /*
617 * Undefine the Arg or Local by setting its descriptor
618 * pointer to NULL. Locals/Args can contain both
619 * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
620 */
621 Node->Object = NULL;
622
623 if ((Object) &&
624 (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_OPERAND))
625 {
626 /*
627 * There is a valid object.
628 * Decrement the reference count by one to balance the
629 * increment when the object was stored.
630 */
631 AcpiUtRemoveReference (Object);
632 }
633
634 return_VOID;
635}
636
637
638/*******************************************************************************
639 *
640 * FUNCTION: AcpiDsStoreObjectToLocal
641 *
642 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
643 * Index - Which localVar or argument to set
644 * ObjDesc - Value to be stored
645 * WalkState - Current walk state
646 *
647 * RETURN: Status
648 *
649 * DESCRIPTION: Store a value in an Arg or Local. The ObjDesc is installed
650 * as the new value for the Arg or Local and the reference count
651 * for ObjDesc is incremented.
652 *
653 ******************************************************************************/
654
655ACPI_STATUS
656AcpiDsStoreObjectToLocal (
657 UINT16 Opcode,
658 UINT32 Index,
659 ACPI_OPERAND_OBJECT *ObjDesc,
660 ACPI_WALK_STATE *WalkState)
661{
662 ACPI_STATUS Status;
663 ACPI_NAMESPACE_NODE *Node;
664 ACPI_OPERAND_OBJECT *CurrentObjDesc;
665 ACPI_OPERAND_OBJECT *NewObjDesc;
| 561 return_ACPI_STATUS (AE_AML_INTERNAL);
562 }
563 }
564
565 /*
566 * The Index points to an initialized and valid object.
567 * Return an additional reference to the object
568 */
569 *DestDesc = Object;
570 AcpiUtAddReference (Object);
571
572 return_ACPI_STATUS (AE_OK);
573}
574
575
576/*******************************************************************************
577 *
578 * FUNCTION: AcpiDsMethodDataDeleteValue
579 *
580 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
581 * Index - Which localVar or argument to delete
582 * WalkState - Current walk state object
583 *
584 * RETURN: None
585 *
586 * DESCRIPTION: Delete the entry at Opcode:Index on the method stack. Inserts
587 * a null into the stack slot after the object is deleted.
588 *
589 ******************************************************************************/
590
591void
592AcpiDsMethodDataDeleteValue (
593 UINT16 Opcode,
594 UINT32 Index,
595 ACPI_WALK_STATE *WalkState)
596{
597 ACPI_STATUS Status;
598 ACPI_NAMESPACE_NODE *Node;
599 ACPI_OPERAND_OBJECT *Object;
600
601
602 ACPI_FUNCTION_TRACE ("DsMethodDataDeleteValue");
603
604
605 /* Get the namespace node for the arg/local */
606
607 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
608 if (ACPI_FAILURE (Status))
609 {
610 return_VOID;
611 }
612
613 /* Get the associated object */
614
615 Object = AcpiNsGetAttachedObject (Node);
616
617 /*
618 * Undefine the Arg or Local by setting its descriptor
619 * pointer to NULL. Locals/Args can contain both
620 * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
621 */
622 Node->Object = NULL;
623
624 if ((Object) &&
625 (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_OPERAND))
626 {
627 /*
628 * There is a valid object.
629 * Decrement the reference count by one to balance the
630 * increment when the object was stored.
631 */
632 AcpiUtRemoveReference (Object);
633 }
634
635 return_VOID;
636}
637
638
639/*******************************************************************************
640 *
641 * FUNCTION: AcpiDsStoreObjectToLocal
642 *
643 * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
644 * Index - Which localVar or argument to set
645 * ObjDesc - Value to be stored
646 * WalkState - Current walk state
647 *
648 * RETURN: Status
649 *
650 * DESCRIPTION: Store a value in an Arg or Local. The ObjDesc is installed
651 * as the new value for the Arg or Local and the reference count
652 * for ObjDesc is incremented.
653 *
654 ******************************************************************************/
655
656ACPI_STATUS
657AcpiDsStoreObjectToLocal (
658 UINT16 Opcode,
659 UINT32 Index,
660 ACPI_OPERAND_OBJECT *ObjDesc,
661 ACPI_WALK_STATE *WalkState)
662{
663 ACPI_STATUS Status;
664 ACPI_NAMESPACE_NODE *Node;
665 ACPI_OPERAND_OBJECT *CurrentObjDesc;
666 ACPI_OPERAND_OBJECT *NewObjDesc;
|
666 UINT8 ObjType;
| |
667
668
669 ACPI_FUNCTION_TRACE ("DsStoreObjectToLocal");
670 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%d Idx=%d Obj=%p\n",
671 Opcode, Index, ObjDesc));
672
673 /* Parameter validation */
674
675 if (!ObjDesc)
676 {
677 return_ACPI_STATUS (AE_BAD_PARAMETER);
678 }
679
680 /* Get the namespace node for the arg/local */
681
682 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
683 if (ACPI_FAILURE (Status))
684 {
685 return_ACPI_STATUS (Status);
686 }
687
688 CurrentObjDesc = AcpiNsGetAttachedObject (Node);
689 if (CurrentObjDesc == ObjDesc)
690 {
691 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
692 ObjDesc));
693 return_ACPI_STATUS (Status);
694 }
695
696 /*
697 * If the reference count on the object is more than one, we must
| 667
668
669 ACPI_FUNCTION_TRACE ("DsStoreObjectToLocal");
670 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%d Idx=%d Obj=%p\n",
671 Opcode, Index, ObjDesc));
672
673 /* Parameter validation */
674
675 if (!ObjDesc)
676 {
677 return_ACPI_STATUS (AE_BAD_PARAMETER);
678 }
679
680 /* Get the namespace node for the arg/local */
681
682 Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
683 if (ACPI_FAILURE (Status))
684 {
685 return_ACPI_STATUS (Status);
686 }
687
688 CurrentObjDesc = AcpiNsGetAttachedObject (Node);
689 if (CurrentObjDesc == ObjDesc)
690 {
691 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
692 ObjDesc));
693 return_ACPI_STATUS (Status);
694 }
695
696 /*
697 * If the reference count on the object is more than one, we must
|
698 * take a copy of the object before we store.
| 698 * take a copy of the object before we store. A reference count
699 * of exactly 1 means that the object was just created during the
700 * evaluation of an expression, and we can safely use it since it
701 * is not used anywhere else.
|
699 */
700 NewObjDesc = ObjDesc;
| 702 */
703 NewObjDesc = ObjDesc;
|
701 ObjType = ACPI_GET_OBJECT_TYPE(ObjDesc);
702 if (ObjDesc->Common.ReferenceCount > 1 &&
703 ObjType != ACPI_TYPE_BUFFER &&
704 ObjType != ACPI_TYPE_PACKAGE &&
705 ObjType != ACPI_TYPE_REGION)
| 704 if (ObjDesc->Common.ReferenceCount > 1)
|
706 {
707 Status = AcpiUtCopyIobjectToIobject (ObjDesc, &NewObjDesc, WalkState);
708 if (ACPI_FAILURE (Status))
709 {
710 return_ACPI_STATUS (Status);
711 }
712 }
713
714 /*
715 * If there is an object already in this slot, we either
716 * have to delete it, or if this is an argument and there
717 * is an object reference stored there, we have to do
718 * an indirect store!
719 */
720 if (CurrentObjDesc)
721 {
722 /*
723 * Check for an indirect store if an argument
724 * contains an object reference (stored as an Node).
725 * We don't allow this automatic dereferencing for
726 * locals, since a store to a local should overwrite
727 * anything there, including an object reference.
728 *
729 * If both Arg0 and Local0 contain RefOf (Local4):
730 *
731 * Store (1, Arg0) - Causes indirect store to local4
732 * Store (1, Local0) - Stores 1 in local0, overwriting
733 * the reference to local4
734 * Store (1, DeRefof (Local0)) - Causes indirect store to local4
735 *
736 * Weird, but true.
737 */
738 if (Opcode == AML_ARG_OP)
739 {
740 /*
741 * Make sure that the object is the correct type. This may be overkill, but
742 * it is here because references were NS nodes in the past. Now they are
743 * operand objects of type Reference.
744 */
745 if (ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) != ACPI_DESC_TYPE_OPERAND)
746 {
747 ACPI_REPORT_ERROR (("Invalid descriptor type while storing to method arg: [%s]\n",
748 AcpiUtGetDescriptorName (CurrentObjDesc)));
749 return_ACPI_STATUS (AE_AML_INTERNAL);
750 }
751
752 /*
753 * If we have a valid reference object that came from RefOf(), do the
754 * indirect store
755 */
756 if ((CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
757 (CurrentObjDesc->Reference.Opcode == AML_REF_OF_OP))
758 {
759 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
760 "Arg (%p) is an ObjRef(Node), storing in node %p\n",
761 NewObjDesc, CurrentObjDesc));
762
763 /*
764 * Store this object to the Node
765 * (perform the indirect store)
766 */
767 Status = AcpiExStoreObjectToNode (NewObjDesc,
768 CurrentObjDesc->Reference.Object, WalkState);
769
770 /* Remove local reference if we copied the object above */
771
772 if (NewObjDesc != ObjDesc)
773 {
774 AcpiUtRemoveReference (NewObjDesc);
775 }
776 return_ACPI_STATUS (Status);
777 }
778 }
779
780 /*
781 * Delete the existing object
782 * before storing the new one
783 */
784 AcpiDsMethodDataDeleteValue (Opcode, Index, WalkState);
785 }
786
787 /*
788 * Install the Obj descriptor (*NewObjDesc) into
789 * the descriptor for the Arg or Local.
790 * (increments the object reference count by one)
791 */
792 Status = AcpiDsMethodDataSetValue (Opcode, Index, NewObjDesc, WalkState);
793
794 /* Remove local reference if we copied the object above */
795
796 if (NewObjDesc != ObjDesc)
797 {
798 AcpiUtRemoveReference (NewObjDesc);
799 }
800
801 return_ACPI_STATUS (Status);
802}
803
804
| 705 {
706 Status = AcpiUtCopyIobjectToIobject (ObjDesc, &NewObjDesc, WalkState);
707 if (ACPI_FAILURE (Status))
708 {
709 return_ACPI_STATUS (Status);
710 }
711 }
712
713 /*
714 * If there is an object already in this slot, we either
715 * have to delete it, or if this is an argument and there
716 * is an object reference stored there, we have to do
717 * an indirect store!
718 */
719 if (CurrentObjDesc)
720 {
721 /*
722 * Check for an indirect store if an argument
723 * contains an object reference (stored as an Node).
724 * We don't allow this automatic dereferencing for
725 * locals, since a store to a local should overwrite
726 * anything there, including an object reference.
727 *
728 * If both Arg0 and Local0 contain RefOf (Local4):
729 *
730 * Store (1, Arg0) - Causes indirect store to local4
731 * Store (1, Local0) - Stores 1 in local0, overwriting
732 * the reference to local4
733 * Store (1, DeRefof (Local0)) - Causes indirect store to local4
734 *
735 * Weird, but true.
736 */
737 if (Opcode == AML_ARG_OP)
738 {
739 /*
740 * Make sure that the object is the correct type. This may be overkill, but
741 * it is here because references were NS nodes in the past. Now they are
742 * operand objects of type Reference.
743 */
744 if (ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) != ACPI_DESC_TYPE_OPERAND)
745 {
746 ACPI_REPORT_ERROR (("Invalid descriptor type while storing to method arg: [%s]\n",
747 AcpiUtGetDescriptorName (CurrentObjDesc)));
748 return_ACPI_STATUS (AE_AML_INTERNAL);
749 }
750
751 /*
752 * If we have a valid reference object that came from RefOf(), do the
753 * indirect store
754 */
755 if ((CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
756 (CurrentObjDesc->Reference.Opcode == AML_REF_OF_OP))
757 {
758 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
759 "Arg (%p) is an ObjRef(Node), storing in node %p\n",
760 NewObjDesc, CurrentObjDesc));
761
762 /*
763 * Store this object to the Node
764 * (perform the indirect store)
765 */
766 Status = AcpiExStoreObjectToNode (NewObjDesc,
767 CurrentObjDesc->Reference.Object, WalkState);
768
769 /* Remove local reference if we copied the object above */
770
771 if (NewObjDesc != ObjDesc)
772 {
773 AcpiUtRemoveReference (NewObjDesc);
774 }
775 return_ACPI_STATUS (Status);
776 }
777 }
778
779 /*
780 * Delete the existing object
781 * before storing the new one
782 */
783 AcpiDsMethodDataDeleteValue (Opcode, Index, WalkState);
784 }
785
786 /*
787 * Install the Obj descriptor (*NewObjDesc) into
788 * the descriptor for the Arg or Local.
789 * (increments the object reference count by one)
790 */
791 Status = AcpiDsMethodDataSetValue (Opcode, Index, NewObjDesc, WalkState);
792
793 /* Remove local reference if we copied the object above */
794
795 if (NewObjDesc != ObjDesc)
796 {
797 AcpiUtRemoveReference (NewObjDesc);
798 }
799
800 return_ACPI_STATUS (Status);
801}
802
803
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