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 - 2018, 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 * Alternatively, you may choose to be licensed under the terms of the
118 * following license:
119 *
120 * Redistribution and use in source and binary forms, with or without
121 * modification, are permitted provided that the following conditions
122 * are met:
123 * 1. Redistributions of source code must retain the above copyright
124 * notice, this list of conditions, and the following disclaimer,
125 * without modification.
126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
127 * substantially similar to the "NO WARRANTY" disclaimer below
128 * ("Disclaimer") and any redistribution must be conditioned upon
129 * including a substantially similar Disclaimer requirement for further
130 * binary redistribution.
131 * 3. Neither the names of the above-listed copyright holders nor the names
132 * of any contributors may be used to endorse or promote products derived
133 * from this software without specific prior written permission.
134 *
135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 *
147 * Alternatively, you may choose to be licensed under the terms of the
148 * GNU General Public License ("GPL") version 2 as published by the Free
149 * Software Foundation.
150 *
151 *****************************************************************************/
152
153 #include "acpi.h"
154 #include "accommon.h"
155 #include "acinterp.h"
156 #include "amlcode.h"
157
158
159 #define _COMPONENT ACPI_EXECUTER
160 ACPI_MODULE_NAME ("exstoren")
161
162
163 /*******************************************************************************
164 *
165 * FUNCTION: AcpiExResolveObject
166 *
167 * PARAMETERS: SourceDescPtr - Pointer to the source object
168 * TargetType - Current type of the target
169 * WalkState - Current walk state
170 *
171 * RETURN: Status, resolved object in SourceDescPtr.
172 *
173 * DESCRIPTION: Resolve an object. If the object is a reference, dereference
174 * it and return the actual object in the SourceDescPtr.
175 *
176 ******************************************************************************/
177
178 ACPI_STATUS
AcpiExResolveObject(ACPI_OPERAND_OBJECT ** SourceDescPtr,ACPI_OBJECT_TYPE TargetType,ACPI_WALK_STATE * WalkState)179 AcpiExResolveObject (
180 ACPI_OPERAND_OBJECT **SourceDescPtr,
181 ACPI_OBJECT_TYPE TargetType,
182 ACPI_WALK_STATE *WalkState)
183 {
184 ACPI_OPERAND_OBJECT *SourceDesc = *SourceDescPtr;
185 ACPI_STATUS Status = AE_OK;
186
187
188 ACPI_FUNCTION_TRACE (ExResolveObject);
189
190
191 /* Ensure we have a Target that can be stored to */
192
193 switch (TargetType)
194 {
195 case ACPI_TYPE_BUFFER_FIELD:
196 case ACPI_TYPE_LOCAL_REGION_FIELD:
197 case ACPI_TYPE_LOCAL_BANK_FIELD:
198 case ACPI_TYPE_LOCAL_INDEX_FIELD:
199 /*
200 * These cases all require only Integers or values that
201 * can be converted to Integers (Strings or Buffers)
202 */
203 case ACPI_TYPE_INTEGER:
204 case ACPI_TYPE_STRING:
205 case ACPI_TYPE_BUFFER:
206 /*
207 * Stores into a Field/Region or into a Integer/Buffer/String
208 * are all essentially the same. This case handles the
209 * "interchangeable" types Integer, String, and Buffer.
210 */
211 if (SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE)
212 {
213 /* Resolve a reference object first */
214
215 Status = AcpiExResolveToValue (SourceDescPtr, WalkState);
216 if (ACPI_FAILURE (Status))
217 {
218 break;
219 }
220 }
221
222 /* For CopyObject, no further validation necessary */
223
224 if (WalkState->Opcode == AML_COPY_OBJECT_OP)
225 {
226 break;
227 }
228
229 /* Must have a Integer, Buffer, or String */
230
231 if ((SourceDesc->Common.Type != ACPI_TYPE_INTEGER) &&
232 (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) &&
233 (SourceDesc->Common.Type != ACPI_TYPE_STRING) &&
234 !((SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
235 (SourceDesc->Reference.Class== ACPI_REFCLASS_TABLE)))
236 {
237 /* Conversion successful but still not a valid type */
238
239 ACPI_ERROR ((AE_INFO,
240 "Cannot assign type [%s] to [%s] (must be type Int/Str/Buf)",
241 AcpiUtGetObjectTypeName (SourceDesc),
242 AcpiUtGetTypeName (TargetType)));
243
244 Status = AE_AML_OPERAND_TYPE;
245 }
246 break;
247
248 case ACPI_TYPE_LOCAL_ALIAS:
249 case ACPI_TYPE_LOCAL_METHOD_ALIAS:
250 /*
251 * All aliases should have been resolved earlier, during the
252 * operand resolution phase.
253 */
254 ACPI_ERROR ((AE_INFO, "Store into an unresolved Alias object"));
255 Status = AE_AML_INTERNAL;
256 break;
257
258 case ACPI_TYPE_PACKAGE:
259 default:
260 /*
261 * All other types than Alias and the various Fields come here,
262 * including the untyped case - ACPI_TYPE_ANY.
263 */
264 break;
265 }
266
267 return_ACPI_STATUS (Status);
268 }
269
270
271 /*******************************************************************************
272 *
273 * FUNCTION: AcpiExStoreObjectToObject
274 *
275 * PARAMETERS: SourceDesc - Object to store
276 * DestDesc - Object to receive a copy of the source
277 * NewDesc - New object if DestDesc is obsoleted
278 * WalkState - Current walk state
279 *
280 * RETURN: Status
281 *
282 * DESCRIPTION: "Store" an object to another object. This may include
283 * converting the source type to the target type (implicit
284 * conversion), and a copy of the value of the source to
285 * the target.
286 *
287 * The Assignment of an object to another (not named) object
288 * is handled here.
289 * The Source passed in will replace the current value (if any)
290 * with the input value.
291 *
292 * When storing into an object the data is converted to the
293 * target object type then stored in the object. This means
294 * that the target object type (for an initialized target) will
295 * not be changed by a store operation.
296 *
297 * This module allows destination types of Number, String,
298 * Buffer, and Package.
299 *
300 * Assumes parameters are already validated. NOTE: SourceDesc
301 * resolution (from a reference object) must be performed by
302 * the caller if necessary.
303 *
304 ******************************************************************************/
305
306 ACPI_STATUS
AcpiExStoreObjectToObject(ACPI_OPERAND_OBJECT * SourceDesc,ACPI_OPERAND_OBJECT * DestDesc,ACPI_OPERAND_OBJECT ** NewDesc,ACPI_WALK_STATE * WalkState)307 AcpiExStoreObjectToObject (
308 ACPI_OPERAND_OBJECT *SourceDesc,
309 ACPI_OPERAND_OBJECT *DestDesc,
310 ACPI_OPERAND_OBJECT **NewDesc,
311 ACPI_WALK_STATE *WalkState)
312 {
313 ACPI_OPERAND_OBJECT *ActualSrcDesc;
314 ACPI_STATUS Status = AE_OK;
315
316
317 ACPI_FUNCTION_TRACE_PTR (ExStoreObjectToObject, SourceDesc);
318
319
320 ActualSrcDesc = SourceDesc;
321 if (!DestDesc)
322 {
323 /*
324 * There is no destination object (An uninitialized node or
325 * package element), so we can simply copy the source object
326 * creating a new destination object
327 */
328 Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState);
329 return_ACPI_STATUS (Status);
330 }
331
332 if (SourceDesc->Common.Type != DestDesc->Common.Type)
333 {
334 /*
335 * The source type does not match the type of the destination.
336 * Perform the "implicit conversion" of the source to the current type
337 * of the target as per the ACPI specification.
338 *
339 * If no conversion performed, ActualSrcDesc = SourceDesc.
340 * Otherwise, ActualSrcDesc is a temporary object to hold the
341 * converted object.
342 */
343 Status = AcpiExConvertToTargetType (DestDesc->Common.Type,
344 SourceDesc, &ActualSrcDesc, WalkState);
345 if (ACPI_FAILURE (Status))
346 {
347 return_ACPI_STATUS (Status);
348 }
349
350 if (SourceDesc == ActualSrcDesc)
351 {
352 /*
353 * No conversion was performed. Return the SourceDesc as the
354 * new object.
355 */
356 *NewDesc = SourceDesc;
357 return_ACPI_STATUS (AE_OK);
358 }
359 }
360
361 /*
362 * We now have two objects of identical types, and we can perform a
363 * copy of the *value* of the source object.
364 */
365 switch (DestDesc->Common.Type)
366 {
367 case ACPI_TYPE_INTEGER:
368
369 DestDesc->Integer.Value = ActualSrcDesc->Integer.Value;
370
371 /* Truncate value if we are executing from a 32-bit ACPI table */
372
373 (void) AcpiExTruncateFor32bitTable (DestDesc);
374 break;
375
376 case ACPI_TYPE_STRING:
377
378 Status = AcpiExStoreStringToString (ActualSrcDesc, DestDesc);
379 break;
380
381 case ACPI_TYPE_BUFFER:
382
383 Status = AcpiExStoreBufferToBuffer (ActualSrcDesc, DestDesc);
384 break;
385
386 case ACPI_TYPE_PACKAGE:
387
388 Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, &DestDesc,
389 WalkState);
390 break;
391
392 default:
393 /*
394 * All other types come here.
395 */
396 ACPI_WARNING ((AE_INFO, "Store into type [%s] not implemented",
397 AcpiUtGetObjectTypeName (DestDesc)));
398
399 Status = AE_NOT_IMPLEMENTED;
400 break;
401 }
402
403 if (ActualSrcDesc != SourceDesc)
404 {
405 /* Delete the intermediate (temporary) source object */
406
407 AcpiUtRemoveReference (ActualSrcDesc);
408 }
409
410 *NewDesc = DestDesc;
411 return_ACPI_STATUS (Status);
412 }
413