[no subject]

[matthew green <mrg%eterna.com.au@localhost>]

   Hi, this is a bit off topic.
   
   I'm learning SPARC assembly and UltraSPARC architecture. I would like to 
   create a small flat binary file with gcc and then load and execute it from 
   openboot. The idea is to execute privileged instructions and mess about with 
   system registers which are not accessable from userland.
   
   Does anyone know how this can be done on Ultra 10? I think on powerup the 
   processor is in RED state, is there a way to execute a few assembly 
   instructions that print a message on console? Is there a way to interact 
with 
   openboot firmware?
   

see what bootblk & ofwboot do.  those are the netbsd code
examples similiar to the level you're looking for.


.mrg.