This is xnu-12377.1.9. See this file in:
Directory listing for xnu-12377.1.9//iokit/DriverKit
IOBufferMemoryDescriptor.iig
IODMACommand.iig
IODataQueueDispatchSource.iig
IODispatchQueue.iig
IODispatchSource.iig
IOEventLink.iig
IOExtensiblePaniclog.iig
IOInterruptDispatchSource.iig
IOKernelReportStructs.h
IOKitKeys.h
IOMemoryDescriptor.iig
IOMemoryMap.iig
IORPC.h
IOReportTypes.h
IOReturn.h
IOService.iig
IOServiceNotificationDispatchSource.iig
IOServiceStateNotificationDispatchSource.iig
IOTypes.h
IOUserClient.iig
IOUserServer.iig
IOWorkGroup.iig
Makefile
OSAction.iig
OSBoundedArray.h
OSBoundedArrayRef.h
OSBoundedPtr.h
OSBoundedPtrFwd.h
OSObject.iig
bounded_array.h
bounded_array_ref.h
bounded_ptr.h
bounded_ptr_fwd.h
crypto/
macro_help.h
queue_implementation.h
safe_allocation.h