ACPI_STATUS
AcpiUtGetPackageObjectSize (
ACPI_OPERAND_OBJECT *InternalObject,
UINT32 *ObjLength)
{
ACPI_STATUS Status;
ACPI_PKG_INFO Info;
FUNCTION_TRACE_PTR ("UtGetPackageObjectSize", InternalObject);
Info.Length = 0;
Info.ObjectSpace = 0;
Info.NumPackages = 1;
Status = AcpiUtWalkPackageTree (InternalObject, NULL,
AcpiUtGetElementLength, &Info);
/*
* We have handled all of the objects in all levels of the package.
* just add the length of the package objects themselves.
* Round up to the next machine word.
*/
Info.Length += ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)) *
Info.NumPackages;
/* Return the total package length */
*ObjLength = Info.Length;
return_ACPI_STATUS (Status);
}
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 = InternalObject->Common.Type;
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);
}
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 = SourceObj->Common.Type;
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);
}
