ACPI_STATUS
AcpiExConcatTemplate (
ACPI_OPERAND_OBJECT *ObjDesc1,
ACPI_OPERAND_OBJECT *ObjDesc2,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
UINT8 *EndTag1;
UINT8 *EndTag2;
ACPI_SIZE Length1;
ACPI_SIZE Length2;
ACPI_FUNCTION_TRACE ("ExConcatTemplate");
/* Find the EndTags in each resource template */
EndTag1 = AcpiUtGetResourceEndTag (ObjDesc1);
EndTag2 = AcpiUtGetResourceEndTag (ObjDesc2);
if (!EndTag1 || !EndTag2)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Compute the length of each part */
Length1 = ACPI_PTR_DIFF (EndTag1, ObjDesc1->Buffer.Pointer);
Length2 = ACPI_PTR_DIFF (EndTag2, ObjDesc2->Buffer.Pointer) +
2; /* Size of END_TAG */
/* Create a new buffer object for the result */
ReturnDesc = AcpiUtCreateBufferObject (Length1 + Length2);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the templates to the new descriptor */
NewBuf = ReturnDesc->Buffer.Pointer;
ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, Length1);
ACPI_MEMCPY (NewBuf + Length1, ObjDesc2->Buffer.Pointer, Length2);
/* Compute the new checksum */
NewBuf[ReturnDesc->Buffer.Length - 1] =
AcpiUtGenerateChecksum (ReturnDesc->Buffer.Pointer,
(ReturnDesc->Buffer.Length - 1));
/* Return the completed template descriptor */
*ActualReturnDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiExConcatTemplate (
ACPI_OPERAND_OBJECT *Operand0,
ACPI_OPERAND_OBJECT *Operand1,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
UINT8 *EndTag;
ACPI_SIZE Length0;
ACPI_SIZE Length1;
ACPI_SIZE NewLength;
ACPI_FUNCTION_TRACE (ExConcatTemplate);
/*
* Find the EndTag descriptor in each resource template.
* Note1: returned pointers point TO the EndTag, not past it.
* Note2: zero-length buffers are allowed; treated like one EndTag
*/
/* Get the length of the first resource template */
Status = AcpiUtGetResourceEndTag (Operand0, &EndTag);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer);
/* Get the length of the second resource template */
Status = AcpiUtGetResourceEndTag (Operand1, &EndTag);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer);
/* Combine both lengths, minimum size will be 2 for EndTag */
NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG);
/* Create a new buffer object for the result (with one EndTag) */
ReturnDesc = AcpiUtCreateBufferObject (NewLength);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Copy the templates to the new buffer, 0 first, then 1 follows. One
* EndTag descriptor is copied from Operand1.
*/
NewBuf = ReturnDesc->Buffer.Pointer;
memcpy (NewBuf, Operand0->Buffer.Pointer, Length0);
memcpy (NewBuf + Length0, Operand1->Buffer.Pointer, Length1);
/* Insert EndTag and set the checksum to zero, means "ignore checksum" */
NewBuf[NewLength - 1] = 0;
NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1;
/* Return the completed resource template */
*ActualReturnDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
