From owner-freebsd-arm@FreeBSD.ORG Mon Jul 19 22:32:48 2004 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0C5E216A4CE for ; Mon, 19 Jul 2004 22:32:48 +0000 (GMT) Received: from dragon.rutgers.edu (dragon.rutgers.edu [128.6.25.118]) by mx1.FreeBSD.org (Postfix) with ESMTP id B997543D39 for ; Mon, 19 Jul 2004 22:32:47 +0000 (GMT) (envelope-from bohra@dragon.rutgers.edu) X-Virus-Scanned: by dragon-cgpav-clamav-v1.3b Received: by dragon.rutgers.edu (CommuniGate Pro PIPE 4.1.8) with PIPE id 17511232; Mon, 19 Jul 2004 18:32:47 -0400 X-Spam-Status-LCSR: dragon spam scanned Received: from [138.15.100.225] (account bohra@dragon.rutgers.edu) by dragon.rutgers.edu (CommuniGate Pro WebUser 4.1.8) with HTTP id 17511229 for freebsd-arm@freebsd.org; Mon, 19 Jul 2004 18:32:46 -0400 From: "Aniruddha Bohra" To: freebsd-arm@freebsd.org X-Mailer: CommuniGate Pro WebUser Interface v.4.1.8 Date: Mon, 19 Jul 2004 18:32:46 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.61 (1.212.2.1-2003-12-09-exp) on spamfilter.rutgers.edu X-Spam-Level: X-Spam-Status: No, hits=-1.9 required=5.0 tests=BAYES_00,MSGID_FROM_MTA_SHORT autolearn=no version=2.61 Subject: SYS32 mode X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Jul 2004 22:32:48 -0000 Hello, Reading through the ARM docs, I understand there are 7 operating modes user, svc, irq, firq, und, abt, sys Out of these, what is the sys mode used for? Is it similar to Ring 1 in x86, that is : Privileged but not used? Any help is appreciated. Thanks Aniruddha