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List:       linux-ppc
Subject:    Re: PPC Privileged mode
From:       Nathan Hurst <njh () drongo ! anu ! edu ! au>
Date:       1999-02-20 23:48:54
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On Fri, 19 Feb 1999, Steven Bytnar wrote:

> 
> How do I exit cleanly from PPC supervisor mode to MacOS? I am trying 
> to work with the code in BootX, but it was meant to execute the 
> kernel and never return. My purpose is only to read and write to 
> supervisor read/writable registers on the chip without destroying 
> MacOS.

Can't you either just set the CPU back to user mode, or return from
interupt? 

njh


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