Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!world!siegel
From: siegel@world.std.com (Rich Siegel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: System 7.0/Supervisor Mode ?
Message-ID: <1991May16.043539.25316@world.std.com>
Date: 16 May 91 04:35:39 GMT
References: <1991May15.024320.9727@world.std.com> <1991May15.155912.23810@cbnewsk.att.com>
Organization: Symantec Language Products Group
Lines: 17

In article <1991May15.155912.23810@cbnewsk.att.com> ech@cbnewsk.att.com (ned.horvath) writes:

>have made sure ThC and ThP won't generate privileged instructions, and that
>all that hand-coded library asm code is clean (right, Rich?), but not all
>of us know for sure...!

	In fact, it's not that the compilers generate or are written with
privileged instructions; it's that the debuggers need to handle exceptions,
and when the machine runs in user mode, there is additional work that's
necessary.

R.
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Rich Siegel                              Internet: siegel@world.std.com
Software Engineer                        Applelink: SIEGEL
Symantec Languages Group