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1498 serge 1
 
2
 *
3
 * Module Name: exstoren - AML Interpreter object store support,
4
 *                        Store to Node (namespace object)
5
 *
6
 *****************************************************************************/
7
8
 
9
 *
10
 * 1. Copyright Notice
11
 *
12
 * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
2216 Serge 13
 * All rights reserved.
1498 serge 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
 
118
119
 
120
#include "accommon.h"
121
#include "acinterp.h"
122
#include "amlcode.h"
123
124
 
125
 
126
        ACPI_MODULE_NAME    ("exstoren")
127
128
 
129
 
130
 *
131
 * FUNCTION:    AcpiExResolveObject
132
 *
133
 * PARAMETERS:  SourceDescPtr       - Pointer to the source object
134
 *              TargetType          - Current type of the target
135
 *              WalkState           - Current walk state
136
 *
137
 * RETURN:      Status, resolved object in SourceDescPtr.
138
 *
139
 * DESCRIPTION: Resolve an object.  If the object is a reference, dereference
140
 *              it and return the actual object in the SourceDescPtr.
141
 *
142
 ******************************************************************************/
143
144
 
145
AcpiExResolveObject (
146
    ACPI_OPERAND_OBJECT     **SourceDescPtr,
147
    ACPI_OBJECT_TYPE        TargetType,
148
    ACPI_WALK_STATE         *WalkState)
149
{
150
    ACPI_OPERAND_OBJECT     *SourceDesc = *SourceDescPtr;
151
    ACPI_STATUS             Status = AE_OK;
152
153
 
154
 
155
156
 
157
 
158
159
 
160
    {
161
    case ACPI_TYPE_BUFFER_FIELD:
162
    case ACPI_TYPE_LOCAL_REGION_FIELD:
163
    case ACPI_TYPE_LOCAL_BANK_FIELD:
164
    case ACPI_TYPE_LOCAL_INDEX_FIELD:
165
        /*
166
         * These cases all require only Integers or values that
167
         * can be converted to Integers (Strings or Buffers)
168
         */
169
170
 
171
    case ACPI_TYPE_STRING:
172
    case ACPI_TYPE_BUFFER:
173
174
 
175
         * Stores into a Field/Region or into a Integer/Buffer/String
176
         * are all essentially the same.  This case handles the
177
         * "interchangeable" types Integer, String, and Buffer.
178
         */
179
        if (SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE)
180
        {
181
            /* Resolve a reference object first */
182
183
 
184
            if (ACPI_FAILURE (Status))
185
            {
186
                break;
187
            }
188
        }
189
190
 
191
192
 
193
        {
194
            break;
195
        }
196
197
 
198
199
 
200
            (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)     &&
201
            (SourceDesc->Common.Type != ACPI_TYPE_STRING)     &&
202
            !((SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
203
                    (SourceDesc->Reference.Class== ACPI_REFCLASS_TABLE)))
204
        {
205
            /* Conversion successful but still not a valid type */
206
207
 
208
                "Cannot assign type %s to %s (must be type Int/Str/Buf)",
209
                AcpiUtGetObjectTypeName (SourceDesc),
210
                AcpiUtGetTypeName (TargetType)));
211
            Status = AE_AML_OPERAND_TYPE;
212
        }
213
        break;
214
215
 
216
 
217
    case ACPI_TYPE_LOCAL_METHOD_ALIAS:
218
219
 
220
         * All aliases should have been resolved earlier, during the
221
         * operand resolution phase.
222
         */
223
        ACPI_ERROR ((AE_INFO, "Store into an unresolved Alias object"));
224
        Status = AE_AML_INTERNAL;
225
        break;
226
227
 
228
 
229
    default:
230
231
 
232
         * All other types than Alias and the various Fields come here,
233
         * including the untyped case - ACPI_TYPE_ANY.
234
         */
235
        break;
236
    }
237
238
 
239
}
240
241
 
242
 
243
 *
244
 * FUNCTION:    AcpiExStoreObjectToObject
245
 *
246
 * PARAMETERS:  SourceDesc          - Object to store
247
 *              DestDesc            - Object to receive a copy of the source
248
 *              NewDesc             - New object if DestDesc is obsoleted
249
 *              WalkState           - Current walk state
250
 *
251
 * RETURN:      Status
252
 *
253
 * DESCRIPTION: "Store" an object to another object.  This may include
254
 *              converting the source type to the target type (implicit
255
 *              conversion), and a copy of the value of the source to
256
 *              the target.
257
 *
258
 *              The Assignment of an object to another (not named) object
259
 *              is handled here.
260
 *              The Source passed in will replace the current value (if any)
261
 *              with the input value.
262
 *
263
 *              When storing into an object the data is converted to the
264
 *              target object type then stored in the object.  This means
265
 *              that the target object type (for an initialized target) will
266
 *              not be changed by a store operation.
267
 *
268
 *              This module allows destination types of Number, String,
269
 *              Buffer, and Package.
270
 *
271
 *              Assumes parameters are already validated.  NOTE: SourceDesc
272
 *              resolution (from a reference object) must be performed by
273
 *              the caller if necessary.
274
 *
275
 ******************************************************************************/
276
277
 
278
AcpiExStoreObjectToObject (
279
    ACPI_OPERAND_OBJECT     *SourceDesc,
280
    ACPI_OPERAND_OBJECT     *DestDesc,
281
    ACPI_OPERAND_OBJECT     **NewDesc,
282
    ACPI_WALK_STATE         *WalkState)
283
{
284
    ACPI_OPERAND_OBJECT     *ActualSrcDesc;
285
    ACPI_STATUS             Status = AE_OK;
286
287
 
288
 
289
290
 
291
 
292
    if (!DestDesc)
293
    {
294
        /*
295
         * There is no destination object (An uninitialized node or
296
         * package element), so we can simply copy the source object
297
         * creating a new destination object
298
         */
299
        Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState);
300
        return_ACPI_STATUS (Status);
301
    }
302
303
 
304
    {
305
        /*
306
         * The source type does not match the type of the destination.
307
         * Perform the "implicit conversion" of the source to the current type
308
         * of the target as per the ACPI specification.
309
         *
310
         * If no conversion performed, ActualSrcDesc = SourceDesc.
311
         * Otherwise, ActualSrcDesc is a temporary object to hold the
312
         * converted object.
313
         */
314
        Status = AcpiExConvertToTargetType (DestDesc->Common.Type,
315
                        SourceDesc, &ActualSrcDesc, WalkState);
316
        if (ACPI_FAILURE (Status))
317
        {
318
            return_ACPI_STATUS (Status);
319
        }
320
321
 
322
        {
323
            /*
324
             * No conversion was performed. Return the SourceDesc as the
325
             * new object.
326
             */
327
            *NewDesc = SourceDesc;
328
            return_ACPI_STATUS (AE_OK);
329
        }
330
    }
331
332
 
333
     * We now have two objects of identical types, and we can perform a
334
     * copy of the *value* of the source object.
335
     */
336
    switch (DestDesc->Common.Type)
337
    {
338
    case ACPI_TYPE_INTEGER:
339
340
 
341
342
 
343
344
 
345
        break;
346
347
 
348
349
 
350
        break;
351
352
 
353
354
 
355
        break;
356
357
 
358
359
 
360
                    WalkState);
361
        break;
362
363
 
364
        /*
365
         * All other types come here.
366
         */
367
        ACPI_WARNING ((AE_INFO, "Store into type %s not implemented",
368
            AcpiUtGetObjectTypeName (DestDesc)));
369
370
 
371
        break;
372
    }
373
374
 
375
    {
376
        /* Delete the intermediate (temporary) source object */
377
378
 
379
    }
380
381
 
382
    return_ACPI_STATUS (Status);
383
}
384