This is xnu-10002.1.13. See this file in:
Directory listing for xnu-10002.1.13//pexpert/pexpert
AppleBoot.h
Clut.h
GearImage.h
Makefile
arm/
arm64/
boot.h
device_tree.h
i386/
machine/
pe_images.h
pexpert.h
protos.h