From mboxrd@z Thu Jan  1 00:00:00 1970
From: Colin_Helliwell@Mitel.COM
To: ecos-discuss@sourceware.cygnus.com
Subject: [ECOS] ARM cpu modes
Date: Wed, 05 Apr 2000 03:09:00 -0000
Message-id: <852568B8.0037BA5A.00@kanmta01.software.mitel.com>
X-SW-Source: 2000-04/msg00051.html

Jesper said in a message yesterday that "[ARM] Application threads run in
supervisor mode in eCos". I've heard/seen it said somewhere that the ARM's
privileged Supervisor mode was intended for OS-type operations, whilst the
non-privileged User mode was intended for application-level code. I was curious
about the rationale behind the choice made in eCos, and whether it is felt that
there are actually any pros and/or cons of running application threads in
supervisor mode.

Thanks.
Colin Helliwell