sysenter is used by dyld to map the app and then run it.
the custom dyld uses syscall 8 (used to be old creat call in Tiger and older, customized to map segment).
Here is an update:
voodoobuild about 85 procent done
fixed Libc build issue, it now builds correct
fixed libsyscall, added dependencies from iokit and the required headers which were missing from IOUSBFamily and IOFireWireFamily, it now builds too.
Now all that is left is libsystem static libc build, dyld and then I can work on the kernel.
dyld will thus be finished today