1 /******************************************************************************
3 * Module Name: utcopy - Internal to external object translation utilities
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2015, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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16 * without modification.
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18 * substantially similar to the "NO WARRANTY" disclaimer below
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20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
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23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
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
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44 #include <contrib/dev/acpica/include/acpi.h>
45 #include <contrib/dev/acpica/include/accommon.h>
46 #include <contrib/dev/acpica/include/acnamesp.h>
49 #define _COMPONENT ACPI_UTILITIES
50 ACPI_MODULE_NAME ("utcopy")
52 /* Local prototypes */
55 AcpiUtCopyIsimpleToEsimple (
56 ACPI_OPERAND_OBJECT *InternalObject,
57 ACPI_OBJECT *ExternalObject,
59 ACPI_SIZE *BufferSpaceUsed);
62 AcpiUtCopyIelementToIelement (
64 ACPI_OPERAND_OBJECT *SourceObject,
65 ACPI_GENERIC_STATE *State,
69 AcpiUtCopyIpackageToEpackage (
70 ACPI_OPERAND_OBJECT *InternalObject,
72 ACPI_SIZE *SpaceUsed);
75 AcpiUtCopyEsimpleToIsimple(
77 ACPI_OPERAND_OBJECT **ReturnObj);
80 AcpiUtCopyEpackageToIpackage (
81 ACPI_OBJECT *ExternalObject,
82 ACPI_OPERAND_OBJECT **InternalObject);
85 AcpiUtCopySimpleObject (
86 ACPI_OPERAND_OBJECT *SourceDesc,
87 ACPI_OPERAND_OBJECT *DestDesc);
90 AcpiUtCopyIelementToEelement (
92 ACPI_OPERAND_OBJECT *SourceObject,
93 ACPI_GENERIC_STATE *State,
97 AcpiUtCopyIpackageToIpackage (
98 ACPI_OPERAND_OBJECT *SourceObj,
99 ACPI_OPERAND_OBJECT *DestObj,
100 ACPI_WALK_STATE *WalkState);
103 /*******************************************************************************
105 * FUNCTION: AcpiUtCopyIsimpleToEsimple
107 * PARAMETERS: InternalObject - Source object to be copied
108 * ExternalObject - Where to return the copied object
109 * DataSpace - Where object data is returned (such as
110 * buffer and string data)
111 * BufferSpaceUsed - Length of DataSpace that was used
115 * DESCRIPTION: This function is called to copy a simple internal object to
116 * an external object.
118 * The DataSpace buffer is assumed to have sufficient space for
121 ******************************************************************************/
124 AcpiUtCopyIsimpleToEsimple (
125 ACPI_OPERAND_OBJECT *InternalObject,
126 ACPI_OBJECT *ExternalObject,
128 ACPI_SIZE *BufferSpaceUsed)
130 ACPI_STATUS Status = AE_OK;
133 ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple);
136 *BufferSpaceUsed = 0;
139 * Check for NULL object case (could be an uninitialized
144 return_ACPI_STATUS (AE_OK);
147 /* Always clear the external object */
149 ACPI_MEMSET (ExternalObject, 0, sizeof (ACPI_OBJECT));
152 * In general, the external object will be the same type as
153 * the internal object
155 ExternalObject->Type = InternalObject->Common.Type;
157 /* However, only a limited number of external types are supported */
159 switch (InternalObject->Common.Type)
161 case ACPI_TYPE_STRING:
163 ExternalObject->String.Pointer = (char *) DataSpace;
164 ExternalObject->String.Length = InternalObject->String.Length;
165 *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
166 (ACPI_SIZE) InternalObject->String.Length + 1);
168 ACPI_MEMCPY ((void *) DataSpace,
169 (void *) InternalObject->String.Pointer,
170 (ACPI_SIZE) InternalObject->String.Length + 1);
173 case ACPI_TYPE_BUFFER:
175 ExternalObject->Buffer.Pointer = DataSpace;
176 ExternalObject->Buffer.Length = InternalObject->Buffer.Length;
177 *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
178 InternalObject->String.Length);
180 ACPI_MEMCPY ((void *) DataSpace,
181 (void *) InternalObject->Buffer.Pointer,
182 InternalObject->Buffer.Length);
185 case ACPI_TYPE_INTEGER:
187 ExternalObject->Integer.Value = InternalObject->Integer.Value;
190 case ACPI_TYPE_LOCAL_REFERENCE:
192 /* This is an object reference. */
194 switch (InternalObject->Reference.Class)
196 case ACPI_REFCLASS_NAME:
198 * For namepath, return the object handle ("reference")
199 * We are referring to the namespace node
201 ExternalObject->Reference.Handle =
202 InternalObject->Reference.Node;
203 ExternalObject->Reference.ActualType =
204 AcpiNsGetType (InternalObject->Reference.Node);
209 /* All other reference types are unsupported */
211 return_ACPI_STATUS (AE_TYPE);
215 case ACPI_TYPE_PROCESSOR:
217 ExternalObject->Processor.ProcId =
218 InternalObject->Processor.ProcId;
219 ExternalObject->Processor.PblkAddress =
220 InternalObject->Processor.Address;
221 ExternalObject->Processor.PblkLength =
222 InternalObject->Processor.Length;
225 case ACPI_TYPE_POWER:
227 ExternalObject->PowerResource.SystemLevel =
228 InternalObject->PowerResource.SystemLevel;
230 ExternalObject->PowerResource.ResourceOrder =
231 InternalObject->PowerResource.ResourceOrder;
236 * There is no corresponding external object type
238 ACPI_ERROR ((AE_INFO,
239 "Unsupported object type, cannot convert to external object: %s",
240 AcpiUtGetTypeName (InternalObject->Common.Type)));
242 return_ACPI_STATUS (AE_SUPPORT);
245 return_ACPI_STATUS (Status);
249 /*******************************************************************************
251 * FUNCTION: AcpiUtCopyIelementToEelement
253 * PARAMETERS: ACPI_PKG_CALLBACK
257 * DESCRIPTION: Copy one package element to another package element
259 ******************************************************************************/
262 AcpiUtCopyIelementToEelement (
264 ACPI_OPERAND_OBJECT *SourceObject,
265 ACPI_GENERIC_STATE *State,
268 ACPI_STATUS Status = AE_OK;
269 ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context;
270 ACPI_SIZE ObjectSpace;
272 ACPI_OBJECT *TargetObject;
275 ACPI_FUNCTION_ENTRY ();
278 ThisIndex = State->Pkg.Index;
279 TargetObject = (ACPI_OBJECT *)
280 &((ACPI_OBJECT *)(State->Pkg.DestObject))->Package.Elements[ThisIndex];
284 case ACPI_COPY_TYPE_SIMPLE:
286 * This is a simple or null object
288 Status = AcpiUtCopyIsimpleToEsimple (SourceObject,
289 TargetObject, Info->FreeSpace, &ObjectSpace);
290 if (ACPI_FAILURE (Status))
296 case ACPI_COPY_TYPE_PACKAGE:
298 * Build the package object
300 TargetObject->Type = ACPI_TYPE_PACKAGE;
301 TargetObject->Package.Count = SourceObject->Package.Count;
302 TargetObject->Package.Elements =
303 ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace);
306 * Pass the new package object back to the package walk routine
308 State->Pkg.ThisTargetObj = TargetObject;
311 * Save space for the array of objects (Package elements)
312 * update the buffer length counter
314 ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD (
315 (ACPI_SIZE) TargetObject->Package.Count *
316 sizeof (ACPI_OBJECT));
321 return (AE_BAD_PARAMETER);
324 Info->FreeSpace += ObjectSpace;
325 Info->Length += ObjectSpace;
330 /*******************************************************************************
332 * FUNCTION: AcpiUtCopyIpackageToEpackage
334 * PARAMETERS: InternalObject - Pointer to the object we are returning
335 * Buffer - Where the object is returned
336 * SpaceUsed - Where the object length is returned
340 * DESCRIPTION: This function is called to place a package object in a user
341 * buffer. A package object by definition contains other objects.
343 * The buffer is assumed to have sufficient space for the object.
344 * The caller must have verified the buffer length needed using
345 * the AcpiUtGetObjectSize function before calling this function.
347 ******************************************************************************/
350 AcpiUtCopyIpackageToEpackage (
351 ACPI_OPERAND_OBJECT *InternalObject,
353 ACPI_SIZE *SpaceUsed)
355 ACPI_OBJECT *ExternalObject;
360 ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage);
364 * First package at head of the buffer
366 ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer);
369 * Free space begins right after the first package
371 Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
372 Info.FreeSpace = Buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (
373 sizeof (ACPI_OBJECT));
374 Info.ObjectSpace = 0;
375 Info.NumPackages = 1;
377 ExternalObject->Type = InternalObject->Common.Type;
378 ExternalObject->Package.Count = InternalObject->Package.Count;
379 ExternalObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT,
383 * Leave room for an array of ACPI_OBJECTS in the buffer
384 * and move the free space past it
386 Info.Length += (ACPI_SIZE) ExternalObject->Package.Count *
387 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
388 Info.FreeSpace += ExternalObject->Package.Count *
389 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
391 Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject,
392 AcpiUtCopyIelementToEelement, &Info);
394 *SpaceUsed = Info.Length;
395 return_ACPI_STATUS (Status);
399 /*******************************************************************************
401 * FUNCTION: AcpiUtCopyIobjectToEobject
403 * PARAMETERS: InternalObject - The internal object to be converted
404 * RetBuffer - Where the object is returned
408 * DESCRIPTION: This function is called to build an API object to be returned
411 ******************************************************************************/
414 AcpiUtCopyIobjectToEobject (
415 ACPI_OPERAND_OBJECT *InternalObject,
416 ACPI_BUFFER *RetBuffer)
421 ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject);
424 if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)
427 * Package object: Copy all subobjects (including
430 Status = AcpiUtCopyIpackageToEpackage (InternalObject,
431 RetBuffer->Pointer, &RetBuffer->Length);
436 * Build a simple object (no nested objects)
438 Status = AcpiUtCopyIsimpleToEsimple (InternalObject,
439 ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer),
440 ACPI_ADD_PTR (UINT8, RetBuffer->Pointer,
441 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))),
444 * build simple does not include the object size in the length
445 * so we add it in here
447 RetBuffer->Length += sizeof (ACPI_OBJECT);
450 return_ACPI_STATUS (Status);
454 /*******************************************************************************
456 * FUNCTION: AcpiUtCopyEsimpleToIsimple
458 * PARAMETERS: ExternalObject - The external object to be converted
459 * RetInternalObject - Where the internal object is returned
463 * DESCRIPTION: This function copies an external object to an internal one.
464 * NOTE: Pointers can be copied, we don't need to copy data.
465 * (The pointers have to be valid in our address space no matter
466 * what we do with them!)
468 ******************************************************************************/
471 AcpiUtCopyEsimpleToIsimple (
472 ACPI_OBJECT *ExternalObject,
473 ACPI_OPERAND_OBJECT **RetInternalObject)
475 ACPI_OPERAND_OBJECT *InternalObject;
478 ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple);
482 * Simple types supported are: String, Buffer, Integer
484 switch (ExternalObject->Type)
486 case ACPI_TYPE_STRING:
487 case ACPI_TYPE_BUFFER:
488 case ACPI_TYPE_INTEGER:
489 case ACPI_TYPE_LOCAL_REFERENCE:
491 InternalObject = AcpiUtCreateInternalObject (
492 (UINT8) ExternalObject->Type);
495 return_ACPI_STATUS (AE_NO_MEMORY);
499 case ACPI_TYPE_ANY: /* This is the case for a NULL object */
501 *RetInternalObject = NULL;
502 return_ACPI_STATUS (AE_OK);
506 /* All other types are not supported */
508 ACPI_ERROR ((AE_INFO,
509 "Unsupported object type, cannot convert to internal object: %s",
510 AcpiUtGetTypeName (ExternalObject->Type)));
512 return_ACPI_STATUS (AE_SUPPORT);
516 /* Must COPY string and buffer contents */
518 switch (ExternalObject->Type)
520 case ACPI_TYPE_STRING:
522 InternalObject->String.Pointer =
523 ACPI_ALLOCATE_ZEROED ((ACPI_SIZE)
524 ExternalObject->String.Length + 1);
526 if (!InternalObject->String.Pointer)
531 ACPI_MEMCPY (InternalObject->String.Pointer,
532 ExternalObject->String.Pointer,
533 ExternalObject->String.Length);
535 InternalObject->String.Length = ExternalObject->String.Length;
538 case ACPI_TYPE_BUFFER:
540 InternalObject->Buffer.Pointer =
541 ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length);
542 if (!InternalObject->Buffer.Pointer)
547 ACPI_MEMCPY (InternalObject->Buffer.Pointer,
548 ExternalObject->Buffer.Pointer,
549 ExternalObject->Buffer.Length);
551 InternalObject->Buffer.Length = ExternalObject->Buffer.Length;
553 /* Mark buffer data valid */
555 InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID;
558 case ACPI_TYPE_INTEGER:
560 InternalObject->Integer.Value = ExternalObject->Integer.Value;
563 case ACPI_TYPE_LOCAL_REFERENCE:
565 /* An incoming reference is defined to be a namespace node */
567 InternalObject->Reference.Class = ACPI_REFCLASS_REFOF;
568 InternalObject->Reference.Object = ExternalObject->Reference.Handle;
573 /* Other types can't get here */
578 *RetInternalObject = InternalObject;
579 return_ACPI_STATUS (AE_OK);
583 AcpiUtRemoveReference (InternalObject);
584 return_ACPI_STATUS (AE_NO_MEMORY);
588 /*******************************************************************************
590 * FUNCTION: AcpiUtCopyEpackageToIpackage
592 * PARAMETERS: ExternalObject - The external object to be converted
593 * InternalObject - Where the internal object is returned
597 * DESCRIPTION: Copy an external package object to an internal package.
598 * Handles nested packages.
600 ******************************************************************************/
603 AcpiUtCopyEpackageToIpackage (
604 ACPI_OBJECT *ExternalObject,
605 ACPI_OPERAND_OBJECT **InternalObject)
607 ACPI_STATUS Status = AE_OK;
608 ACPI_OPERAND_OBJECT *PackageObject;
609 ACPI_OPERAND_OBJECT **PackageElements;
613 ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage);
616 /* Create the package object */
618 PackageObject = AcpiUtCreatePackageObject (ExternalObject->Package.Count);
621 return_ACPI_STATUS (AE_NO_MEMORY);
624 PackageElements = PackageObject->Package.Elements;
627 * Recursive implementation. Probably ok, since nested external packages
628 * as parameters should be very rare.
630 for (i = 0; i < ExternalObject->Package.Count; i++)
632 Status = AcpiUtCopyEobjectToIobject (
633 &ExternalObject->Package.Elements[i],
634 &PackageElements[i]);
635 if (ACPI_FAILURE (Status))
637 /* Truncate package and delete it */
639 PackageObject->Package.Count = i;
640 PackageElements[i] = NULL;
641 AcpiUtRemoveReference (PackageObject);
642 return_ACPI_STATUS (Status);
646 /* Mark package data valid */
648 PackageObject->Package.Flags |= AOPOBJ_DATA_VALID;
650 *InternalObject = PackageObject;
651 return_ACPI_STATUS (Status);
655 /*******************************************************************************
657 * FUNCTION: AcpiUtCopyEobjectToIobject
659 * PARAMETERS: ExternalObject - The external object to be converted
660 * InternalObject - Where the internal object is returned
664 * DESCRIPTION: Converts an external object to an internal object.
666 ******************************************************************************/
669 AcpiUtCopyEobjectToIobject (
670 ACPI_OBJECT *ExternalObject,
671 ACPI_OPERAND_OBJECT **InternalObject)
676 ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject);
679 if (ExternalObject->Type == ACPI_TYPE_PACKAGE)
681 Status = AcpiUtCopyEpackageToIpackage (ExternalObject, InternalObject);
686 * Build a simple object (no nested objects)
688 Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, InternalObject);
691 return_ACPI_STATUS (Status);
695 /*******************************************************************************
697 * FUNCTION: AcpiUtCopySimpleObject
699 * PARAMETERS: SourceDesc - The internal object to be copied
700 * DestDesc - New target object
704 * DESCRIPTION: Simple copy of one internal object to another. Reference count
705 * of the destination object is preserved.
707 ******************************************************************************/
710 AcpiUtCopySimpleObject (
711 ACPI_OPERAND_OBJECT *SourceDesc,
712 ACPI_OPERAND_OBJECT *DestDesc)
714 UINT16 ReferenceCount;
715 ACPI_OPERAND_OBJECT *NextObject;
720 /* Save fields from destination that we don't want to overwrite */
722 ReferenceCount = DestDesc->Common.ReferenceCount;
723 NextObject = DestDesc->Common.NextObject;
726 * Copy the entire source object over the destination object.
727 * Note: Source can be either an operand object or namespace node.
729 CopySize = sizeof (ACPI_OPERAND_OBJECT);
730 if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED)
732 CopySize = sizeof (ACPI_NAMESPACE_NODE);
735 ACPI_MEMCPY (ACPI_CAST_PTR (char, DestDesc),
736 ACPI_CAST_PTR (char, SourceDesc), CopySize);
738 /* Restore the saved fields */
740 DestDesc->Common.ReferenceCount = ReferenceCount;
741 DestDesc->Common.NextObject = NextObject;
743 /* New object is not static, regardless of source */
745 DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER;
747 /* Handle the objects with extra data */
749 switch (DestDesc->Common.Type)
751 case ACPI_TYPE_BUFFER:
753 * Allocate and copy the actual buffer if and only if:
754 * 1) There is a valid buffer pointer
755 * 2) The buffer has a length > 0
757 if ((SourceDesc->Buffer.Pointer) &&
758 (SourceDesc->Buffer.Length))
760 DestDesc->Buffer.Pointer =
761 ACPI_ALLOCATE (SourceDesc->Buffer.Length);
762 if (!DestDesc->Buffer.Pointer)
764 return (AE_NO_MEMORY);
767 /* Copy the actual buffer data */
769 ACPI_MEMCPY (DestDesc->Buffer.Pointer,
770 SourceDesc->Buffer.Pointer, SourceDesc->Buffer.Length);
774 case ACPI_TYPE_STRING:
776 * Allocate and copy the actual string if and only if:
777 * 1) There is a valid string pointer
778 * (Pointer to a NULL string is allowed)
780 if (SourceDesc->String.Pointer)
782 DestDesc->String.Pointer =
783 ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1);
784 if (!DestDesc->String.Pointer)
786 return (AE_NO_MEMORY);
789 /* Copy the actual string data */
791 ACPI_MEMCPY (DestDesc->String.Pointer, SourceDesc->String.Pointer,
792 (ACPI_SIZE) SourceDesc->String.Length + 1);
796 case ACPI_TYPE_LOCAL_REFERENCE:
798 * We copied the reference object, so we now must add a reference
799 * to the object pointed to by the reference
801 * DDBHandle reference (from Load/LoadTable) is a special reference,
802 * it does not have a Reference.Object, so does not need to
803 * increase the reference count
805 if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
810 AcpiUtAddReference (SourceDesc->Reference.Object);
813 case ACPI_TYPE_REGION:
815 * We copied the Region Handler, so we now must add a reference
817 if (DestDesc->Region.Handler)
819 AcpiUtAddReference (DestDesc->Region.Handler);
824 * For Mutex and Event objects, we cannot simply copy the underlying
825 * OS object. We must create a new one.
827 case ACPI_TYPE_MUTEX:
829 Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex);
830 if (ACPI_FAILURE (Status))
836 case ACPI_TYPE_EVENT:
838 Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
839 &DestDesc->Event.OsSemaphore);
840 if (ACPI_FAILURE (Status))
848 /* Nothing to do for other simple objects */
857 /*******************************************************************************
859 * FUNCTION: AcpiUtCopyIelementToIelement
861 * PARAMETERS: ACPI_PKG_CALLBACK
865 * DESCRIPTION: Copy one package element to another package element
867 ******************************************************************************/
870 AcpiUtCopyIelementToIelement (
872 ACPI_OPERAND_OBJECT *SourceObject,
873 ACPI_GENERIC_STATE *State,
876 ACPI_STATUS Status = AE_OK;
878 ACPI_OPERAND_OBJECT **ThisTargetPtr;
879 ACPI_OPERAND_OBJECT *TargetObject;
882 ACPI_FUNCTION_ENTRY ();
885 ThisIndex = State->Pkg.Index;
886 ThisTargetPtr = (ACPI_OPERAND_OBJECT **)
887 &State->Pkg.DestObject->Package.Elements[ThisIndex];
891 case ACPI_COPY_TYPE_SIMPLE:
893 /* A null source object indicates a (legal) null package element */
898 * This is a simple object, just copy it
900 TargetObject = AcpiUtCreateInternalObject (
901 SourceObject->Common.Type);
904 return (AE_NO_MEMORY);
907 Status = AcpiUtCopySimpleObject (SourceObject, TargetObject);
908 if (ACPI_FAILURE (Status))
913 *ThisTargetPtr = TargetObject;
917 /* Pass through a null element */
919 *ThisTargetPtr = NULL;
923 case ACPI_COPY_TYPE_PACKAGE:
925 * This object is a package - go down another nesting level
926 * Create and build the package object
928 TargetObject = AcpiUtCreatePackageObject (SourceObject->Package.Count);
931 return (AE_NO_MEMORY);
934 TargetObject->Common.Flags = SourceObject->Common.Flags;
936 /* Pass the new package object back to the package walk routine */
938 State->Pkg.ThisTargetObj = TargetObject;
940 /* Store the object pointer in the parent package object */
942 *ThisTargetPtr = TargetObject;
947 return (AE_BAD_PARAMETER);
953 AcpiUtRemoveReference (TargetObject);
958 /*******************************************************************************
960 * FUNCTION: AcpiUtCopyIpackageToIpackage
962 * PARAMETERS: SourceObj - Pointer to the source package object
963 * DestObj - Where the internal object is returned
964 * WalkState - Current Walk state descriptor
968 * DESCRIPTION: This function is called to copy an internal package object
969 * into another internal package object.
971 ******************************************************************************/
974 AcpiUtCopyIpackageToIpackage (
975 ACPI_OPERAND_OBJECT *SourceObj,
976 ACPI_OPERAND_OBJECT *DestObj,
977 ACPI_WALK_STATE *WalkState)
979 ACPI_STATUS Status = AE_OK;
982 ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage);
985 DestObj->Common.Type = SourceObj->Common.Type;
986 DestObj->Common.Flags = SourceObj->Common.Flags;
987 DestObj->Package.Count = SourceObj->Package.Count;
990 * Create the object array and walk the source package tree
992 DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED (
993 ((ACPI_SIZE) SourceObj->Package.Count + 1) *
995 if (!DestObj->Package.Elements)
997 ACPI_ERROR ((AE_INFO, "Package allocation failure"));
998 return_ACPI_STATUS (AE_NO_MEMORY);
1002 * Copy the package element-by-element by walking the package "tree".
1003 * This handles nested packages of arbitrary depth.
1005 Status = AcpiUtWalkPackageTree (SourceObj, DestObj,
1006 AcpiUtCopyIelementToIelement, WalkState);
1007 if (ACPI_FAILURE (Status))
1009 /* On failure, delete the destination package object */
1011 AcpiUtRemoveReference (DestObj);
1014 return_ACPI_STATUS (Status);
1018 /*******************************************************************************
1020 * FUNCTION: AcpiUtCopyIobjectToIobject
1022 * PARAMETERS: SourceDesc - The internal object to be copied
1023 * DestDesc - Where the copied object is returned
1024 * WalkState - Current walk state
1028 * DESCRIPTION: Copy an internal object to a new internal object
1030 ******************************************************************************/
1033 AcpiUtCopyIobjectToIobject (
1034 ACPI_OPERAND_OBJECT *SourceDesc,
1035 ACPI_OPERAND_OBJECT **DestDesc,
1036 ACPI_WALK_STATE *WalkState)
1038 ACPI_STATUS Status = AE_OK;
1041 ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);
1044 /* Create the top level object */
1046 *DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type);
1049 return_ACPI_STATUS (AE_NO_MEMORY);
1052 /* Copy the object and possible subobjects */
1054 if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE)
1056 Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc,
1061 Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
1064 /* Delete the allocated object if copy failed */
1066 if (ACPI_FAILURE (Status))
1068 AcpiUtRemoveReference(*DestDesc);
1071 return_ACPI_STATUS (Status);