Changing kernel entry point

[Martin Osterloh <martin.osterloh%dartmouth.edu@localhost>]

Hi all,

I just started to use NetBSD 6.0.1 (amd64). I am able to compile my own 
kernel without problems. The default entry point is 0xffffffff80100000 
according to readelf. I think the actual location in memory is 0x100000 
(1MiByte).

How could I change the 0xffffffff80100000 to a value of my liking? 
Reason being that I have a custom bootloader which does not like the 
0xffff... address (out of the virtual memory space).
What I could do is just ignore the 0xffffffff80 and tell it to load at 
address 0x100000. But there must be a reason why NetBSD has this entry 
point?

Thanks for any help guys!

Best,
--Martin