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Diffstat (limited to 'sys/contrib/dev/acpica/utcopy.c')
| -rw-r--r-- | sys/contrib/dev/acpica/utcopy.c | 1091 |
1 files changed, 1091 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/utcopy.c b/sys/contrib/dev/acpica/utcopy.c new file mode 100644 index 0000000..2d4072c --- /dev/null +++ b/sys/contrib/dev/acpica/utcopy.c @@ -0,0 +1,1091 @@ +/****************************************************************************** + * + * Module Name: utcopy - Internal to external object translation utilities + * $Revision: 1.130 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. + * All rights reserved. + * + * 2. License + * + * 2.1. This is your license from Intel Corp. under its intellectual property + * rights. You may have additional license terms from the party that provided + * you this software, covering your right to use that party's intellectual + * property rights. + * + * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a + * copy of the source code appearing in this file ("Covered Code") an + * irrevocable, perpetual, worldwide license under Intel's copyrights in the + * base code distributed originally by Intel ("Original Intel Code") to copy, + * make derivatives, distribute, use and display any portion of the Covered + * Code in any form, with the right to sublicense such rights; and + * + * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent + * license (with the right to sublicense), under only those claims of Intel + * patents that are infringed by the Original Intel Code, to make, use, sell, + * offer to sell, and import the Covered Code and derivative works thereof + * solely to the minimum extent necessary to exercise the above copyright + * license, and in no event shall the patent license extend to any additions + * to or modifications of the Original Intel Code. No other license or right + * is granted directly or by implication, estoppel or otherwise; + * + * The above copyright and patent license is granted only if the following + * conditions are met: + * + * 3. Conditions + * + * 3.1. Redistribution of Source with Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification with rights to further distribute source must include + * the above Copyright Notice, the above License, this list of Conditions, + * and the following Disclaimer and Export Compliance provision. In addition, + * Licensee must cause all Covered Code to which Licensee contributes to + * contain a file documenting the changes Licensee made to create that Covered + * Code and the date of any change. Licensee must include in that file the + * documentation of any changes made by any predecessor Licensee. Licensee + * must include a prominent statement that the modification is derived, + * directly or indirectly, from Original Intel Code. + * + * 3.2. Redistribution of Source with no Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification without rights to further distribute source must + * include the following Disclaimer and Export Compliance provision in the + * documentation and/or other materials provided with distribution. In + * addition, Licensee may not authorize further sublicense of source of any + * portion of the Covered Code, and must include terms to the effect that the + * license from Licensee to its licensee is limited to the intellectual + * property embodied in the software Licensee provides to its licensee, and + * not to intellectual property embodied in modifications its licensee may + * make. + * + * 3.3. Redistribution of Executable. Redistribution in executable form of any + * substantial portion of the Covered Code or modification must reproduce the + * above Copyright Notice, and the following Disclaimer and Export Compliance + * provision in the documentation and/or other materials provided with the + * distribution. + * + * 3.4. Intel retains all right, title, and interest in and to the Original + * Intel Code. + * + * 3.5. Neither the name Intel nor any other trademark owned or controlled by + * Intel shall be used in advertising or otherwise to promote the sale, use or + * other dealings in products derived from or relating to the Covered Code + * without prior written authorization from Intel. + * + * 4. Disclaimer and Export Compliance + * + * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED + * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE + * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, + * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY + * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY + * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A + * PARTICULAR PURPOSE. + * + * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES + * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR + * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, + * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY + * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL + * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS + * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY + * LIMITED REMEDY. + * + * 4.3. Licensee shall not export, either directly or indirectly, any of this + * software or system incorporating such software without first obtaining any + * required license or other approval from the U. S. Department of Commerce or + * any other agency or department of the United States Government. In the + * event Licensee exports any such software from the United States or + * re-exports any such software from a foreign destination, Licensee shall + * ensure that the distribution and export/re-export of the software is in + * compliance with all laws, regulations, orders, or other restrictions of the + * U.S. Export Administration Regulations. Licensee agrees that neither it nor + * any of its subsidiaries will export/re-export any technical data, process, + * software, or service, directly or indirectly, to any country for which the + * United States government or any agency thereof requires an export license, + * other governmental approval, or letter of assurance, without first obtaining + * such license, approval or letter. + * + *****************************************************************************/ + +#define __UTCOPY_C__ + +#include <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/amlcode.h> + + +#define _COMPONENT ACPI_UTILITIES + ACPI_MODULE_NAME ("utcopy") + +/* Local prototypes */ + +static ACPI_STATUS +AcpiUtCopyIsimpleToEsimple ( + ACPI_OPERAND_OBJECT *InternalObject, + ACPI_OBJECT *ExternalObject, + UINT8 *DataSpace, + ACPI_SIZE *BufferSpaceUsed); + +static ACPI_STATUS +AcpiUtCopyIelementToIelement ( + UINT8 ObjectType, + ACPI_OPERAND_OBJECT *SourceObject, + ACPI_GENERIC_STATE *State, + void *Context); + +static ACPI_STATUS +AcpiUtCopyIpackageToEpackage ( + ACPI_OPERAND_OBJECT *InternalObject, + UINT8 *Buffer, + ACPI_SIZE *SpaceUsed); + +static ACPI_STATUS +AcpiUtCopyEsimpleToIsimple( + ACPI_OBJECT *UserObj, + ACPI_OPERAND_OBJECT **ReturnObj); + +static ACPI_STATUS +AcpiUtCopySimpleObject ( + ACPI_OPERAND_OBJECT *SourceDesc, + ACPI_OPERAND_OBJECT *DestDesc); + +static ACPI_STATUS +AcpiUtCopyIelementToEelement ( + UINT8 ObjectType, + ACPI_OPERAND_OBJECT *SourceObject, + ACPI_GENERIC_STATE *State, + void *Context); + +static ACPI_STATUS +AcpiUtCopyIpackageToIpackage ( + ACPI_OPERAND_OBJECT *SourceObj, + ACPI_OPERAND_OBJECT *DestObj, + ACPI_WALK_STATE *WalkState); + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIsimpleToEsimple + * + * PARAMETERS: InternalObject - Source object to be copied + * ExternalObject - Where to return the copied object + * DataSpace - Where object data is returned (such as + * buffer and string data) + * BufferSpaceUsed - Length of DataSpace that was used + * + * RETURN: Status + * + * DESCRIPTION: This function is called to copy a simple internal object to + * an external object. + * + * The DataSpace buffer is assumed to have sufficient space for + * the object. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyIsimpleToEsimple ( + ACPI_OPERAND_OBJECT *InternalObject, + ACPI_OBJECT *ExternalObject, + UINT8 *DataSpace, + ACPI_SIZE *BufferSpaceUsed) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple); + + + *BufferSpaceUsed = 0; + + /* + * Check for NULL object case (could be an uninitialized + * package element) + */ + if (!InternalObject) + { + return_ACPI_STATUS (AE_OK); + } + + /* Always clear the external object */ + + ACPI_MEMSET (ExternalObject, 0, sizeof (ACPI_OBJECT)); + + /* + * In general, the external object will be the same type as + * the internal object + */ + ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); + + /* However, only a limited number of external types are supported */ + + switch (ACPI_GET_OBJECT_TYPE (InternalObject)) + { + case ACPI_TYPE_STRING: + + ExternalObject->String.Pointer = (char *) DataSpace; + ExternalObject->String.Length = InternalObject->String.Length; + *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD ( + (ACPI_SIZE) InternalObject->String.Length + 1); + + ACPI_MEMCPY ((void *) DataSpace, + (void *) InternalObject->String.Pointer, + (ACPI_SIZE) InternalObject->String.Length + 1); + break; + + + case ACPI_TYPE_BUFFER: + + ExternalObject->Buffer.Pointer = DataSpace; + ExternalObject->Buffer.Length = InternalObject->Buffer.Length; + *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD ( + InternalObject->String.Length); + + ACPI_MEMCPY ((void *) DataSpace, + (void *) InternalObject->Buffer.Pointer, + InternalObject->Buffer.Length); + break; + + + case ACPI_TYPE_INTEGER: + + ExternalObject->Integer.Value = InternalObject->Integer.Value; + break; + + + case ACPI_TYPE_LOCAL_REFERENCE: + + /* + * This is an object reference. Attempt to dereference it. + */ + switch (InternalObject->Reference.Opcode) + { + case AML_INT_NAMEPATH_OP: + + /* For namepath, return the object handle ("reference") */ + + default: + /* + * Use the object type of "Any" to indicate a reference + * to object containing a handle to an ACPI named object. + */ + ExternalObject->Type = ACPI_TYPE_ANY; + ExternalObject->Reference.Handle = InternalObject->Reference.Node; + break; + } + break; + + + case ACPI_TYPE_PROCESSOR: + + ExternalObject->Processor.ProcId = InternalObject->Processor.ProcId; + ExternalObject->Processor.PblkAddress = InternalObject->Processor.Address; + ExternalObject->Processor.PblkLength = InternalObject->Processor.Length; + break; + + + case ACPI_TYPE_POWER: + + ExternalObject->PowerResource.SystemLevel = + InternalObject->PowerResource.SystemLevel; + + ExternalObject->PowerResource.ResourceOrder = + InternalObject->PowerResource.ResourceOrder; + break; + + + default: + /* + * There is no corresponding external object type + */ + return_ACPI_STATUS (AE_SUPPORT); + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIelementToEelement + * + * PARAMETERS: ACPI_PKG_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Copy one package element to another package element + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyIelementToEelement ( + UINT8 ObjectType, + ACPI_OPERAND_OBJECT *SourceObject, + ACPI_GENERIC_STATE *State, + void *Context) +{ + ACPI_STATUS Status = AE_OK; + ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context; + ACPI_SIZE ObjectSpace; + UINT32 ThisIndex; + ACPI_OBJECT *TargetObject; + + + ACPI_FUNCTION_ENTRY (); + + + ThisIndex = State->Pkg.Index; + TargetObject = (ACPI_OBJECT *) + &((ACPI_OBJECT *)(State->Pkg.DestObject))->Package.Elements[ThisIndex]; + + switch (ObjectType) + { + case ACPI_COPY_TYPE_SIMPLE: + + /* + * This is a simple or null object + */ + Status = AcpiUtCopyIsimpleToEsimple (SourceObject, + TargetObject, Info->FreeSpace, &ObjectSpace); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + break; + + + case ACPI_COPY_TYPE_PACKAGE: + + /* + * Build the package object + */ + TargetObject->Type = ACPI_TYPE_PACKAGE; + TargetObject->Package.Count = SourceObject->Package.Count; + TargetObject->Package.Elements = + ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace); + + /* + * Pass the new package object back to the package walk routine + */ + State->Pkg.ThisTargetObj = TargetObject; + + /* + * Save space for the array of objects (Package elements) + * update the buffer length counter + */ + ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD ( + (ACPI_SIZE) TargetObject->Package.Count * + sizeof (ACPI_OBJECT)); + break; + + + default: + return (AE_BAD_PARAMETER); + } + + Info->FreeSpace += ObjectSpace; + Info->Length += ObjectSpace; + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIpackageToEpackage + * + * PARAMETERS: InternalObject - Pointer to the object we are returning + * Buffer - Where the object is returned + * SpaceUsed - Where the object length is returned + * + * RETURN: Status + * + * DESCRIPTION: This function is called to place a package object in a user + * buffer. A package object by definition contains other objects. + * + * The buffer is assumed to have sufficient space for the object. + * The caller must have verified the buffer length needed using the + * AcpiUtGetObjectSize function before calling this function. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyIpackageToEpackage ( + ACPI_OPERAND_OBJECT *InternalObject, + UINT8 *Buffer, + ACPI_SIZE *SpaceUsed) +{ + ACPI_OBJECT *ExternalObject; + ACPI_STATUS Status; + ACPI_PKG_INFO Info; + + + ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage); + + + /* + * First package at head of the buffer + */ + ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer); + + /* + * Free space begins right after the first package + */ + Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); + Info.FreeSpace = Buffer + ACPI_ROUND_UP_TO_NATIVE_WORD ( + sizeof (ACPI_OBJECT)); + Info.ObjectSpace = 0; + Info.NumPackages = 1; + + ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); + ExternalObject->Package.Count = InternalObject->Package.Count; + ExternalObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT, + Info.FreeSpace); + + /* + * Leave room for an array of ACPI_OBJECTS in the buffer + * and move the free space past it + */ + Info.Length += (ACPI_SIZE) ExternalObject->Package.Count * + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); + Info.FreeSpace += ExternalObject->Package.Count * + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); + + Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject, + AcpiUtCopyIelementToEelement, &Info); + + *SpaceUsed = Info.Length; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIobjectToEobject + * + * PARAMETERS: InternalObject - The internal object to be converted + * BufferPtr - Where the object is returned + * + * RETURN: Status + * + * DESCRIPTION: This function is called to build an API object to be returned to + * the caller. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCopyIobjectToEobject ( + ACPI_OPERAND_OBJECT *InternalObject, + ACPI_BUFFER *RetBuffer) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject); + + + if (ACPI_GET_OBJECT_TYPE (InternalObject) == ACPI_TYPE_PACKAGE) + { + /* + * Package object: Copy all subobjects (including + * nested packages) + */ + Status = AcpiUtCopyIpackageToEpackage (InternalObject, + RetBuffer->Pointer, &RetBuffer->Length); + } + else + { + /* + * Build a simple object (no nested objects) + */ + Status = AcpiUtCopyIsimpleToEsimple (InternalObject, + ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer), + ACPI_ADD_PTR (UINT8, RetBuffer->Pointer, + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))), + &RetBuffer->Length); + /* + * build simple does not include the object size in the length + * so we add it in here + */ + RetBuffer->Length += sizeof (ACPI_OBJECT); + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyEsimpleToIsimple + * + * PARAMETERS: ExternalObject - The external object to be converted + * RetInternalObject - Where the internal object is returned + * + * RETURN: Status + * + * DESCRIPTION: This function copies an external object to an internal one. + * NOTE: Pointers can be copied, we don't need to copy data. + * (The pointers have to be valid in our address space no matter + * what we do with them!) + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyEsimpleToIsimple ( + ACPI_OBJECT *ExternalObject, + ACPI_OPERAND_OBJECT **RetInternalObject) +{ + ACPI_OPERAND_OBJECT *InternalObject; + + + ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple); + + + /* + * Simple types supported are: String, Buffer, Integer + */ + switch (ExternalObject->Type) + { + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + case ACPI_TYPE_INTEGER: + + InternalObject = AcpiUtCreateInternalObject ( + (UINT8) ExternalObject->Type); + if (!InternalObject) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + break; + + default: + /* All other types are not supported */ + + return_ACPI_STATUS (AE_SUPPORT); + } + + + /* Must COPY string and buffer contents */ + + switch (ExternalObject->Type) + { + case ACPI_TYPE_STRING: + + InternalObject->String.Pointer = + ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) ExternalObject->String.Length + 1); + if (!InternalObject->String.Pointer) + { + goto ErrorExit; + } + + ACPI_MEMCPY (InternalObject->String.Pointer, + ExternalObject->String.Pointer, + ExternalObject->String.Length); + + InternalObject->String.Length = ExternalObject->String.Length; + break; + + + case ACPI_TYPE_BUFFER: + + InternalObject->Buffer.Pointer = + ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length); + if (!InternalObject->Buffer.Pointer) + { + goto ErrorExit; + } + + ACPI_MEMCPY (InternalObject->Buffer.Pointer, + ExternalObject->Buffer.Pointer, + ExternalObject->Buffer.Length); + + InternalObject->Buffer.Length = ExternalObject->Buffer.Length; + break; + + + case ACPI_TYPE_INTEGER: + + InternalObject->Integer.Value = ExternalObject->Integer.Value; + break; + + default: + /* Other types can't get here */ + break; + } + + *RetInternalObject = InternalObject; + return_ACPI_STATUS (AE_OK); + + +ErrorExit: + AcpiUtRemoveReference (InternalObject); + return_ACPI_STATUS (AE_NO_MEMORY); +} + + +#ifdef ACPI_FUTURE_IMPLEMENTATION +/* Code to convert packages that are parameters to control methods */ + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyEpackageToIpackage + * + * PARAMETERS: *InternalObject - Pointer to the object we are returning + * *Buffer - Where the object is returned + * *SpaceUsed - Where the length of the object is returned + * + * RETURN: Status + * + * DESCRIPTION: This function is called to place a package object in a user + * buffer. A package object by definition contains other objects. + * + * The buffer is assumed to have sufficient space for the object. + * The caller must have verified the buffer length needed using the + * AcpiUtGetObjectSize function before calling this function. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyEpackageToIpackage ( + ACPI_OPERAND_OBJECT *InternalObject, + UINT8 *Buffer, + UINT32 *SpaceUsed) +{ + UINT8 *FreeSpace; + ACPI_OBJECT *ExternalObject; + UINT32 Length = 0; + UINT32 ThisIndex; + UINT32 ObjectSpace = 0; + ACPI_OPERAND_OBJECT *ThisInternalObj; + ACPI_OBJECT *ThisExternalObj; + + + ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage); + + + /* + * First package at head of the buffer + */ + ExternalObject = (ACPI_OBJECT *)Buffer; + + /* + * Free space begins right after the first package + */ + FreeSpace = Buffer + sizeof(ACPI_OBJECT); + + + ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); + ExternalObject->Package.Count = InternalObject->Package.Count; + ExternalObject->Package.Elements = (ACPI_OBJECT *)FreeSpace; + + /* + * Build an array of ACPI_OBJECTS in the buffer + * and move the free space past it + */ + FreeSpace += ExternalObject->Package.Count * sizeof(ACPI_OBJECT); + + + /* Call WalkPackage */ + +} + +#endif /* Future implementation */ + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyEobjectToIobject + * + * PARAMETERS: *InternalObject - The external object to be converted + * *BufferPtr - Where the internal object is returned + * + * RETURN: Status - the status of the call + * + * DESCRIPTION: Converts an external object to an internal object. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCopyEobjectToIobject ( + ACPI_OBJECT *ExternalObject, + ACPI_OPERAND_OBJECT **InternalObject) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject); + + + if (ExternalObject->Type == ACPI_TYPE_PACKAGE) + { + /* + * Packages as external input to control methods are not supported, + */ + ACPI_ERROR ((AE_INFO, + "Packages as parameters not implemented!")); + + return_ACPI_STATUS (AE_NOT_IMPLEMENTED); + } + + else + { + /* + * Build a simple object (no nested objects) + */ + Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, InternalObject); + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopySimpleObject + * + * PARAMETERS: SourceDesc - The internal object to be copied + * DestDesc - New target object + * + * RETURN: Status + * + * DESCRIPTION: Simple copy of one internal object to another. Reference count + * of the destination object is preserved. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopySimpleObject ( + ACPI_OPERAND_OBJECT *SourceDesc, + ACPI_OPERAND_OBJECT *DestDesc) +{ + UINT16 ReferenceCount; + ACPI_OPERAND_OBJECT *NextObject; + + + /* Save fields from destination that we don't want to overwrite */ + + ReferenceCount = DestDesc->Common.ReferenceCount; + NextObject = DestDesc->Common.NextObject; + + /* Copy the entire source object over the destination object*/ + + ACPI_MEMCPY ((char *) DestDesc, (char *) SourceDesc, + sizeof (ACPI_OPERAND_OBJECT)); + + /* Restore the saved fields */ + + DestDesc->Common.ReferenceCount = ReferenceCount; + DestDesc->Common.NextObject = NextObject; + + /* New object is not static, regardless of source */ + + DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER; + + /* Handle the objects with extra data */ + + switch (ACPI_GET_OBJECT_TYPE (DestDesc)) + { + case ACPI_TYPE_BUFFER: + /* + * Allocate and copy the actual buffer if and only if: + * 1) There is a valid buffer pointer + * 2) The buffer has a length > 0 + */ + if ((SourceDesc->Buffer.Pointer) && + (SourceDesc->Buffer.Length)) + { + DestDesc->Buffer.Pointer = + ACPI_ALLOCATE (SourceDesc->Buffer.Length); + if (!DestDesc->Buffer.Pointer) + { + return (AE_NO_MEMORY); + } + + /* Copy the actual buffer data */ + + ACPI_MEMCPY (DestDesc->Buffer.Pointer, + SourceDesc->Buffer.Pointer, + SourceDesc->Buffer.Length); + } + break; + + case ACPI_TYPE_STRING: + /* + * Allocate and copy the actual string if and only if: + * 1) There is a valid string pointer + * (Pointer to a NULL string is allowed) + */ + if (SourceDesc->String.Pointer) + { + DestDesc->String.Pointer = + ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1); + if (!DestDesc->String.Pointer) + { + return (AE_NO_MEMORY); + } + + /* Copy the actual string data */ + + ACPI_MEMCPY (DestDesc->String.Pointer, SourceDesc->String.Pointer, + (ACPI_SIZE) SourceDesc->String.Length + 1); + } + break; + + case ACPI_TYPE_LOCAL_REFERENCE: + /* + * We copied the reference object, so we now must add a reference + * to the object pointed to by the reference + */ + AcpiUtAddReference (SourceDesc->Reference.Object); + break; + + case ACPI_TYPE_REGION: + /* + * We copied the Region Handler, so we now must add a reference + */ + if (DestDesc->Region.Handler) + { + AcpiUtAddReference (DestDesc->Region.Handler); + } + break; + + default: + /* Nothing to do for other simple objects */ + break; + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIelementToIelement + * + * PARAMETERS: ACPI_PKG_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Copy one package element to another package element + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyIelementToIelement ( + UINT8 ObjectType, + ACPI_OPERAND_OBJECT *SourceObject, + ACPI_GENERIC_STATE *State, + void *Context) +{ + ACPI_STATUS Status = AE_OK; + UINT32 ThisIndex; + ACPI_OPERAND_OBJECT **ThisTargetPtr; + ACPI_OPERAND_OBJECT *TargetObject; + + + ACPI_FUNCTION_ENTRY (); + + + ThisIndex = State->Pkg.Index; + ThisTargetPtr = (ACPI_OPERAND_OBJECT **) + &State->Pkg.DestObject->Package.Elements[ThisIndex]; + + switch (ObjectType) + { + case ACPI_COPY_TYPE_SIMPLE: + + /* A null source object indicates a (legal) null package element */ + + if (SourceObject) + { + /* + * This is a simple object, just copy it + */ + TargetObject = AcpiUtCreateInternalObject ( + ACPI_GET_OBJECT_TYPE (SourceObject)); + if (!TargetObject) + { + return (AE_NO_MEMORY); + } + + Status = AcpiUtCopySimpleObject (SourceObject, TargetObject); + if (ACPI_FAILURE (Status)) + { + goto ErrorExit; + } + + *ThisTargetPtr = TargetObject; + } + else + { + /* Pass through a null element */ + + *ThisTargetPtr = NULL; + } + break; + + + case ACPI_COPY_TYPE_PACKAGE: + + /* + * This object is a package - go down another nesting level + * Create and build the package object + */ + TargetObject = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE); + if (!TargetObject) + { + return (AE_NO_MEMORY); + } + + TargetObject->Package.Count = SourceObject->Package.Count; + TargetObject->Common.Flags = SourceObject->Common.Flags; + + /* + * Create the object array + */ + TargetObject->Package.Elements = ACPI_ALLOCATE_ZEROED ( + ((ACPI_SIZE) SourceObject->Package.Count + 1) * sizeof (void *)); + if (!TargetObject->Package.Elements) + { + Status = AE_NO_MEMORY; + goto ErrorExit; + } + + /* + * Pass the new package object back to the package walk routine + */ + State->Pkg.ThisTargetObj = TargetObject; + + /* + * Store the object pointer in the parent package object + */ + *ThisTargetPtr = TargetObject; + break; + + + default: + return (AE_BAD_PARAMETER); + } + + return (Status); + +ErrorExit: + AcpiUtRemoveReference (TargetObject); + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIpackageToIpackage + * + * PARAMETERS: *SourceObj - Pointer to the source package object + * *DestObj - Where the internal object is returned + * + * RETURN: Status - the status of the call + * + * DESCRIPTION: This function is called to copy an internal package object + * into another internal package object. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiUtCopyIpackageToIpackage ( + ACPI_OPERAND_OBJECT *SourceObj, + ACPI_OPERAND_OBJECT *DestObj, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage); + + + DestObj->Common.Type = ACPI_GET_OBJECT_TYPE (SourceObj); + DestObj->Common.Flags = SourceObj->Common.Flags; + DestObj->Package.Count = SourceObj->Package.Count; + + /* + * Create the object array and walk the source package tree + */ + DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED ( + ((ACPI_SIZE) SourceObj->Package.Count + 1) * + sizeof (void *)); + if (!DestObj->Package.Elements) + { + ACPI_ERROR ((AE_INFO, "Package allocation failure")); + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* + * Copy the package element-by-element by walking the package "tree". + * This handles nested packages of arbitrary depth. + */ + Status = AcpiUtWalkPackageTree (SourceObj, DestObj, + AcpiUtCopyIelementToIelement, WalkState); + if (ACPI_FAILURE (Status)) + { + /* On failure, delete the destination package object */ + + AcpiUtRemoveReference (DestObj); + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCopyIobjectToIobject + * + * PARAMETERS: WalkState - Current walk state + * SourceDesc - The internal object to be copied + * DestDesc - Where the copied object is returned + * + * RETURN: Status + * + * DESCRIPTION: Copy an internal object to a new internal object + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCopyIobjectToIobject ( + ACPI_OPERAND_OBJECT *SourceDesc, + ACPI_OPERAND_OBJECT **DestDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject); + + + /* Create the top level object */ + + *DestDesc = AcpiUtCreateInternalObject (ACPI_GET_OBJECT_TYPE (SourceDesc)); + if (!*DestDesc) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Copy the object and possible subobjects */ + + if (ACPI_GET_OBJECT_TYPE (SourceDesc) == ACPI_TYPE_PACKAGE) + { + Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc, + WalkState); + } + else + { + Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc); + } + + return_ACPI_STATUS (Status); +} + + |
