1libkern/i386/OSAtomic.s standard 2libkern/zlib/intel/inffastS.s optional zlib 3libkern/zlib/intel/adler32vec.s optional zlib 4 5# Optimized WKdm compressor 6libkern/kxld/i386/WKdmCompress.s optional hibernation 7libkern/kxld/i386/WKdmDecompress.s optional hibernation 8