1
2 /******************************************************************************
3 *
4 * Module Name: exresolv - AML Interpreter object resolution
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2011, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
148 * uses the associated AML opcode to determine the value.
149 *
150 ******************************************************************************/
151
152 static ACPI_STATUS
153 AcpiExResolveObjectToValue (
154 ACPI_OPERAND_OBJECT **StackPtr,
155 ACPI_WALK_STATE *WalkState)
156 {
157 ACPI_STATUS Status = AE_OK;
158 ACPI_OPERAND_OBJECT *StackDesc;
159 ACPI_OPERAND_OBJECT *ObjDesc = NULL;
160 UINT8 RefType;
161
162
163 ACPI_FUNCTION_TRACE (ExResolveObjectToValue);
164
165
166 StackDesc = *StackPtr;
167
168 /* This is an ACPI_OPERAND_OBJECT */
169
170 switch (StackDesc->Common.Type)
171 {
172 case ACPI_TYPE_LOCAL_REFERENCE:
173
174 RefType = StackDesc->Reference.Class;
175
176 switch (RefType)
177 {
178 case ACPI_REFCLASS_LOCAL:
179 case ACPI_REFCLASS_ARG:
180
181 /*
182 * Get the local from the method's state info
183 * Note: this increments the local's object reference count
184 */
185 Status = AcpiDsMethodDataGetValue (RefType,
186 StackDesc->Reference.Value, WalkState, &ObjDesc);
187 if (ACPI_FAILURE (Status))
188 {
189 return_ACPI_STATUS (Status);
190 }
191
192 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] ValueObj is %p\n",
193 StackDesc->Reference.Value, ObjDesc));
194
195 /*
196 * Now we can delete the original Reference Object and
197 * replace it with the resolved value
198 */
199 AcpiUtRemoveReference (StackDesc);
200 *StackPtr = ObjDesc;
201 break;
202
203
204 case ACPI_REFCLASS_INDEX:
205
206 switch (StackDesc->Reference.TargetType)
207 {
208 case ACPI_TYPE_BUFFER_FIELD:
209
210 /* Just return - do not dereference */
211 break;
212
213
214 case ACPI_TYPE_PACKAGE:
215
216 /* If method call or CopyObject - do not dereference */
217
218 if ((WalkState->Opcode == AML_INT_METHODCALL_OP) ||
219 (WalkState->Opcode == AML_COPY_OP))
220 {
221 break;
222 }
223
224 /* Otherwise, dereference the PackageIndex to a package element */
225
226 ObjDesc = *StackDesc->Reference.Where;
227 if (ObjDesc)
228 {
229 /*
230 * Valid object descriptor, copy pointer to return value
231 * (i.e., dereference the package index)
232 * Delete the ref object, increment the returned object
233 */
234 AcpiUtRemoveReference (StackDesc);
235 AcpiUtAddReference (ObjDesc);
236 *StackPtr = ObjDesc;
237 }
238 else
239 {
240 /*
241 * A NULL object descriptor means an uninitialized element of
242 * the package, can't dereference it
243 */
244 ACPI_ERROR ((AE_INFO,
245 "Attempt to dereference an Index to NULL package element Idx=%p",
246 StackDesc));
247 Status = AE_AML_UNINITIALIZED_ELEMENT;
248 }
249 break;
250
251
252 default:
253
254 /* Invalid reference object */
255
256 ACPI_ERROR ((AE_INFO,
257 "Unknown TargetType 0x%X in Index/Reference object %p",
258 StackDesc->Reference.TargetType, StackDesc));
259 Status = AE_AML_INTERNAL;
260 break;
261 }
262 break;
263
264
265 case ACPI_REFCLASS_REFOF:
266 case ACPI_REFCLASS_DEBUG:
267 case ACPI_REFCLASS_TABLE:
268
269 /* Just leave the object as-is, do not dereference */
270
271 break;
272
273 case ACPI_REFCLASS_NAME: /* Reference to a named object */
274
275 /* Dereference the name */
276
277 if ((StackDesc->Reference.Node->Type == ACPI_TYPE_DEVICE) ||
278 (StackDesc->Reference.Node->Type == ACPI_TYPE_THERMAL))
279 {
280 /* These node types do not have 'real' subobjects */
281
282 *StackPtr = (void *) StackDesc->Reference.Node;
283 }
284 else
285 {
286 /* Get the object pointed to by the namespace node */
287
288 *StackPtr = (StackDesc->Reference.Node)->Object;
289 AcpiUtAddReference (*StackPtr);
290 }
291
292 AcpiUtRemoveReference (StackDesc);
293 break;
294
295 default:
296
297 ACPI_ERROR ((AE_INFO,
298 "Unknown Reference type 0x%X in %p", RefType, StackDesc));
299 Status = AE_AML_INTERNAL;
300 break;
301 }
302 break;
303
304
305 case ACPI_TYPE_BUFFER:
306
307 Status = AcpiDsGetBufferArguments (StackDesc);
308 break;
309
310
311 case ACPI_TYPE_PACKAGE:
312
313 Status = AcpiDsGetPackageArguments (StackDesc);
314 break;
315
316
317 case ACPI_TYPE_BUFFER_FIELD:
318 case ACPI_TYPE_LOCAL_REGION_FIELD:
319 case ACPI_TYPE_LOCAL_BANK_FIELD:
320 case ACPI_TYPE_LOCAL_INDEX_FIELD:
321
322 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead SourceDesc=%p Type=%X\n",
323 StackDesc, StackDesc->Common.Type));
324
325 Status = AcpiExReadDataFromField (WalkState, StackDesc, &ObjDesc);
326
327 /* Remove a reference to the original operand, then override */
328
329 AcpiUtRemoveReference (*StackPtr);
330 *StackPtr = (void *) ObjDesc;
331 break;
332
333 default:
334 break;
335 }
336
337 return_ACPI_STATUS (Status);
338 }
339
340
341 /*******************************************************************************
342 *
343 * FUNCTION: AcpiExResolveMultiple
344 *
345 * PARAMETERS: WalkState - Current state (contains AML opcode)
346 * Operand - Starting point for resolution
347 * ReturnType - Where the object type is returned
348 * ReturnDesc - Where the resolved object is returned
349 *
350 * RETURN: Status
351 *
352 * DESCRIPTION: Return the base object and type. Traverse a reference list if
353 * necessary to get to the base object.
358 AcpiExResolveMultiple (
359 ACPI_WALK_STATE *WalkState,
360 ACPI_OPERAND_OBJECT *Operand,
361 ACPI_OBJECT_TYPE *ReturnType,
362 ACPI_OPERAND_OBJECT **ReturnDesc)
363 {
364 ACPI_OPERAND_OBJECT *ObjDesc = (void *) Operand;
365 ACPI_NAMESPACE_NODE *Node;
366 ACPI_OBJECT_TYPE Type;
367 ACPI_STATUS Status;
368
369
370 ACPI_FUNCTION_TRACE (AcpiExResolveMultiple);
371
372
373 /* Operand can be either a namespace node or an operand descriptor */
374
375 switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
376 {
377 case ACPI_DESC_TYPE_OPERAND:
378 Type = ObjDesc->Common.Type;
379 break;
380
381 case ACPI_DESC_TYPE_NAMED:
382 Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type;
383 ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc);
384
385 /* If we had an Alias node, use the attached object for type info */
386
387 if (Type == ACPI_TYPE_LOCAL_ALIAS)
388 {
389 Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type;
390 ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc);
391 }
392 break;
393
394 default:
395 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
396 }
397
398 /* If type is anything other than a reference, we are done */
399
400 if (Type != ACPI_TYPE_LOCAL_REFERENCE)
401 {
438
439 /* Get the attached object */
440
441 ObjDesc = AcpiNsGetAttachedObject (Node);
442 if (!ObjDesc)
443 {
444 /* No object, use the NS node type */
445
446 Type = AcpiNsGetType (Node);
447 goto Exit;
448 }
449
450 /* Check for circular references */
451
452 if (ObjDesc == Operand)
453 {
454 return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
455 }
456 break;
457
458
459 case ACPI_REFCLASS_INDEX:
460
461 /* Get the type of this reference (index into another object) */
462
463 Type = ObjDesc->Reference.TargetType;
464 if (Type != ACPI_TYPE_PACKAGE)
465 {
466 goto Exit;
467 }
468
469 /*
470 * The main object is a package, we want to get the type
471 * of the individual package element that is referenced by
472 * the index.
473 *
474 * This could of course in turn be another reference object.
475 */
476 ObjDesc = *(ObjDesc->Reference.Where);
477 if (!ObjDesc)
478 {
479 /* NULL package elements are allowed */
480
481 Type = 0; /* Uninitialized */
482 goto Exit;
483 }
484 break;
485
486
487 case ACPI_REFCLASS_TABLE:
488
489 Type = ACPI_TYPE_DDB_HANDLE;
490 goto Exit;
491
492
493 case ACPI_REFCLASS_LOCAL:
494 case ACPI_REFCLASS_ARG:
495
496 if (ReturnDesc)
497 {
498 Status = AcpiDsMethodDataGetValue (ObjDesc->Reference.Class,
499 ObjDesc->Reference.Value, WalkState, &ObjDesc);
500 if (ACPI_FAILURE (Status))
501 {
502 return_ACPI_STATUS (Status);
503 }
504 AcpiUtRemoveReference (ObjDesc);
505 }
506 else
507 {
508 Status = AcpiDsMethodDataGetNode (ObjDesc->Reference.Class,
509 ObjDesc->Reference.Value, WalkState, &Node);
510 if (ACPI_FAILURE (Status))
511 {
512 return_ACPI_STATUS (Status);
513 }
514
515 ObjDesc = AcpiNsGetAttachedObject (Node);
516 if (!ObjDesc)
517 {
518 Type = ACPI_TYPE_ANY;
519 goto Exit;
520 }
521 }
522 break;
523
524
525 case ACPI_REFCLASS_DEBUG:
526
527 /* The Debug Object is of type "DebugObject" */
528
529 Type = ACPI_TYPE_DEBUG_OBJECT;
530 goto Exit;
531
532
533 default:
534
535 ACPI_ERROR ((AE_INFO,
536 "Unknown Reference Class 0x%2.2X", ObjDesc->Reference.Class));
537 return_ACPI_STATUS (AE_AML_INTERNAL);
538 }
539 }
540
541 /*
542 * Now we are guaranteed to have an object that has not been created
543 * via the RefOf or Index operators.
544 */
545 Type = ObjDesc->Common.Type;
546
547
548 Exit:
549 /* Convert internal types to external types */
550
551 switch (Type)
552 {
553 case ACPI_TYPE_LOCAL_REGION_FIELD:
554 case ACPI_TYPE_LOCAL_BANK_FIELD:
555 case ACPI_TYPE_LOCAL_INDEX_FIELD:
556
557 Type = ACPI_TYPE_FIELD_UNIT;
558 break;
559
560 case ACPI_TYPE_LOCAL_SCOPE:
561
562 /* Per ACPI Specification, Scope is untyped */
563
564 Type = ACPI_TYPE_ANY;
565 break;
566
567 default:
568 /* No change to Type required */
569 break;
570 }
571
572 *ReturnType = Type;
573 if (ReturnDesc)
574 {
575 *ReturnDesc = ObjDesc;
576 }
577 return_ACPI_STATUS (AE_OK);
578 }
579
580
|
1 /******************************************************************************
2 *
3 * Module Name: exresolv - AML Interpreter object resolution
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
147 * uses the associated AML opcode to determine the value.
148 *
149 ******************************************************************************/
150
151 static ACPI_STATUS
152 AcpiExResolveObjectToValue (
153 ACPI_OPERAND_OBJECT **StackPtr,
154 ACPI_WALK_STATE *WalkState)
155 {
156 ACPI_STATUS Status = AE_OK;
157 ACPI_OPERAND_OBJECT *StackDesc;
158 ACPI_OPERAND_OBJECT *ObjDesc = NULL;
159 UINT8 RefType;
160
161
162 ACPI_FUNCTION_TRACE (ExResolveObjectToValue);
163
164
165 StackDesc = *StackPtr;
166
167 /* This is an object of type ACPI_OPERAND_OBJECT */
168
169 switch (StackDesc->Common.Type)
170 {
171 case ACPI_TYPE_LOCAL_REFERENCE:
172
173 RefType = StackDesc->Reference.Class;
174
175 switch (RefType)
176 {
177 case ACPI_REFCLASS_LOCAL:
178 case ACPI_REFCLASS_ARG:
179 /*
180 * Get the local from the method's state info
181 * Note: this increments the local's object reference count
182 */
183 Status = AcpiDsMethodDataGetValue (RefType,
184 StackDesc->Reference.Value, WalkState, &ObjDesc);
185 if (ACPI_FAILURE (Status))
186 {
187 return_ACPI_STATUS (Status);
188 }
189
190 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] ValueObj is %p\n",
191 StackDesc->Reference.Value, ObjDesc));
192
193 /*
194 * Now we can delete the original Reference Object and
195 * replace it with the resolved value
196 */
197 AcpiUtRemoveReference (StackDesc);
198 *StackPtr = ObjDesc;
199 break;
200
201 case ACPI_REFCLASS_INDEX:
202
203 switch (StackDesc->Reference.TargetType)
204 {
205 case ACPI_TYPE_BUFFER_FIELD:
206
207 /* Just return - do not dereference */
208 break;
209
210 case ACPI_TYPE_PACKAGE:
211
212 /* If method call or CopyObject - do not dereference */
213
214 if ((WalkState->Opcode == AML_INT_METHODCALL_OP) ||
215 (WalkState->Opcode == AML_COPY_OP))
216 {
217 break;
218 }
219
220 /* Otherwise, dereference the PackageIndex to a package element */
221
222 ObjDesc = *StackDesc->Reference.Where;
223 if (ObjDesc)
224 {
225 /*
226 * Valid object descriptor, copy pointer to return value
227 * (i.e., dereference the package index)
228 * Delete the ref object, increment the returned object
229 */
230 AcpiUtRemoveReference (StackDesc);
231 AcpiUtAddReference (ObjDesc);
232 *StackPtr = ObjDesc;
233 }
234 else
235 {
236 /*
237 * A NULL object descriptor means an uninitialized element of
238 * the package, can't dereference it
239 */
240 ACPI_ERROR ((AE_INFO,
241 "Attempt to dereference an Index to NULL package element Idx=%p",
242 StackDesc));
243 Status = AE_AML_UNINITIALIZED_ELEMENT;
244 }
245 break;
246
247 default:
248
249 /* Invalid reference object */
250
251 ACPI_ERROR ((AE_INFO,
252 "Unknown TargetType 0x%X in Index/Reference object %p",
253 StackDesc->Reference.TargetType, StackDesc));
254 Status = AE_AML_INTERNAL;
255 break;
256 }
257 break;
258
259 case ACPI_REFCLASS_REFOF:
260 case ACPI_REFCLASS_DEBUG:
261 case ACPI_REFCLASS_TABLE:
262
263 /* Just leave the object as-is, do not dereference */
264
265 break;
266
267 case ACPI_REFCLASS_NAME: /* Reference to a named object */
268
269 /* Dereference the name */
270
271 if ((StackDesc->Reference.Node->Type == ACPI_TYPE_DEVICE) ||
272 (StackDesc->Reference.Node->Type == ACPI_TYPE_THERMAL))
273 {
274 /* These node types do not have 'real' subobjects */
275
276 *StackPtr = (void *) StackDesc->Reference.Node;
277 }
278 else
279 {
280 /* Get the object pointed to by the namespace node */
281
282 *StackPtr = (StackDesc->Reference.Node)->Object;
283 AcpiUtAddReference (*StackPtr);
284 }
285
286 AcpiUtRemoveReference (StackDesc);
287 break;
288
289 default:
290
291 ACPI_ERROR ((AE_INFO,
292 "Unknown Reference type 0x%X in %p", RefType, StackDesc));
293 Status = AE_AML_INTERNAL;
294 break;
295 }
296 break;
297
298 case ACPI_TYPE_BUFFER:
299
300 Status = AcpiDsGetBufferArguments (StackDesc);
301 break;
302
303 case ACPI_TYPE_PACKAGE:
304
305 Status = AcpiDsGetPackageArguments (StackDesc);
306 break;
307
308 case ACPI_TYPE_BUFFER_FIELD:
309 case ACPI_TYPE_LOCAL_REGION_FIELD:
310 case ACPI_TYPE_LOCAL_BANK_FIELD:
311 case ACPI_TYPE_LOCAL_INDEX_FIELD:
312
313 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead SourceDesc=%p Type=%X\n",
314 StackDesc, StackDesc->Common.Type));
315
316 Status = AcpiExReadDataFromField (WalkState, StackDesc, &ObjDesc);
317
318 /* Remove a reference to the original operand, then override */
319
320 AcpiUtRemoveReference (*StackPtr);
321 *StackPtr = (void *) ObjDesc;
322 break;
323
324 default:
325
326 break;
327 }
328
329 return_ACPI_STATUS (Status);
330 }
331
332
333 /*******************************************************************************
334 *
335 * FUNCTION: AcpiExResolveMultiple
336 *
337 * PARAMETERS: WalkState - Current state (contains AML opcode)
338 * Operand - Starting point for resolution
339 * ReturnType - Where the object type is returned
340 * ReturnDesc - Where the resolved object is returned
341 *
342 * RETURN: Status
343 *
344 * DESCRIPTION: Return the base object and type. Traverse a reference list if
345 * necessary to get to the base object.
350 AcpiExResolveMultiple (
351 ACPI_WALK_STATE *WalkState,
352 ACPI_OPERAND_OBJECT *Operand,
353 ACPI_OBJECT_TYPE *ReturnType,
354 ACPI_OPERAND_OBJECT **ReturnDesc)
355 {
356 ACPI_OPERAND_OBJECT *ObjDesc = (void *) Operand;
357 ACPI_NAMESPACE_NODE *Node;
358 ACPI_OBJECT_TYPE Type;
359 ACPI_STATUS Status;
360
361
362 ACPI_FUNCTION_TRACE (AcpiExResolveMultiple);
363
364
365 /* Operand can be either a namespace node or an operand descriptor */
366
367 switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
368 {
369 case ACPI_DESC_TYPE_OPERAND:
370
371 Type = ObjDesc->Common.Type;
372 break;
373
374 case ACPI_DESC_TYPE_NAMED:
375
376 Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type;
377 ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc);
378
379 /* If we had an Alias node, use the attached object for type info */
380
381 if (Type == ACPI_TYPE_LOCAL_ALIAS)
382 {
383 Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type;
384 ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc);
385 }
386 break;
387
388 default:
389 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
390 }
391
392 /* If type is anything other than a reference, we are done */
393
394 if (Type != ACPI_TYPE_LOCAL_REFERENCE)
395 {
432
433 /* Get the attached object */
434
435 ObjDesc = AcpiNsGetAttachedObject (Node);
436 if (!ObjDesc)
437 {
438 /* No object, use the NS node type */
439
440 Type = AcpiNsGetType (Node);
441 goto Exit;
442 }
443
444 /* Check for circular references */
445
446 if (ObjDesc == Operand)
447 {
448 return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
449 }
450 break;
451
452 case ACPI_REFCLASS_INDEX:
453
454 /* Get the type of this reference (index into another object) */
455
456 Type = ObjDesc->Reference.TargetType;
457 if (Type != ACPI_TYPE_PACKAGE)
458 {
459 goto Exit;
460 }
461
462 /*
463 * The main object is a package, we want to get the type
464 * of the individual package element that is referenced by
465 * the index.
466 *
467 * This could of course in turn be another reference object.
468 */
469 ObjDesc = *(ObjDesc->Reference.Where);
470 if (!ObjDesc)
471 {
472 /* NULL package elements are allowed */
473
474 Type = 0; /* Uninitialized */
475 goto Exit;
476 }
477 break;
478
479 case ACPI_REFCLASS_TABLE:
480
481 Type = ACPI_TYPE_DDB_HANDLE;
482 goto Exit;
483
484 case ACPI_REFCLASS_LOCAL:
485 case ACPI_REFCLASS_ARG:
486
487 if (ReturnDesc)
488 {
489 Status = AcpiDsMethodDataGetValue (ObjDesc->Reference.Class,
490 ObjDesc->Reference.Value, WalkState, &ObjDesc);
491 if (ACPI_FAILURE (Status))
492 {
493 return_ACPI_STATUS (Status);
494 }
495 AcpiUtRemoveReference (ObjDesc);
496 }
497 else
498 {
499 Status = AcpiDsMethodDataGetNode (ObjDesc->Reference.Class,
500 ObjDesc->Reference.Value, WalkState, &Node);
501 if (ACPI_FAILURE (Status))
502 {
503 return_ACPI_STATUS (Status);
504 }
505
506 ObjDesc = AcpiNsGetAttachedObject (Node);
507 if (!ObjDesc)
508 {
509 Type = ACPI_TYPE_ANY;
510 goto Exit;
511 }
512 }
513 break;
514
515 case ACPI_REFCLASS_DEBUG:
516
517 /* The Debug Object is of type "DebugObject" */
518
519 Type = ACPI_TYPE_DEBUG_OBJECT;
520 goto Exit;
521
522 default:
523
524 ACPI_ERROR ((AE_INFO,
525 "Unknown Reference Class 0x%2.2X", ObjDesc->Reference.Class));
526 return_ACPI_STATUS (AE_AML_INTERNAL);
527 }
528 }
529
530 /*
531 * Now we are guaranteed to have an object that has not been created
532 * via the RefOf or Index operators.
533 */
534 Type = ObjDesc->Common.Type;
535
536
537 Exit:
538 /* Convert internal types to external types */
539
540 switch (Type)
541 {
542 case ACPI_TYPE_LOCAL_REGION_FIELD:
543 case ACPI_TYPE_LOCAL_BANK_FIELD:
544 case ACPI_TYPE_LOCAL_INDEX_FIELD:
545
546 Type = ACPI_TYPE_FIELD_UNIT;
547 break;
548
549 case ACPI_TYPE_LOCAL_SCOPE:
550
551 /* Per ACPI Specification, Scope is untyped */
552
553 Type = ACPI_TYPE_ANY;
554 break;
555
556 default:
557
558 /* No change to Type required */
559
560 break;
561 }
562
563 *ReturnType = Type;
564 if (ReturnDesc)
565 {
566 *ReturnDesc = ObjDesc;
567 }
568 return_ACPI_STATUS (AE_OK);
569 }
|