ACPI_TABLE_PDTT
UINT32 Offset = sizeof (ACPI_TABLE_PDTT);
ACPI_TABLE_PDTT *PdttHeader;
PdttHeader = ACPI_CAST_PTR (ACPI_TABLE_PDTT, ParentTable->Buffer);
PdttHeader->ArrayOffset = sizeof (ACPI_TABLE_PDTT);
#define ACPI_PDTT_OFFSET(f) (UINT16) ACPI_OFFSET (ACPI_TABLE_PDTT,f)