From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1CxBup-000354-Q8 for qemu-devel@nongnu.org; Fri, 04 Feb 2005 17:27:04 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1CxBud-000312-TS for qemu-devel@nongnu.org; Fri, 04 Feb 2005 17:26:53 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1CxBud-0002vN-8I for qemu-devel@nongnu.org; Fri, 04 Feb 2005 17:26:51 -0500 Received: from [65.74.133.9] (helo=mail.codesourcery.com) by monty-python.gnu.org with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.34) id 1CxBVG-0004jB-83 for qemu-devel@nongnu.org; Fri, 04 Feb 2005 17:00:38 -0500 From: Paul Brook Subject: Re: [Qemu-devel] ARM: Adding Maverick FPU support Date: Fri, 4 Feb 2005 22:00:31 +0000 References: <1107544087.23911.8.camel@jmcmullan> In-Reply-To: <1107544087.23911.8.camel@jmcmullan> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200502042200.32185.paul@codesourcery.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On Friday 04 February 2005 19:08, Jason McMullan wrote: > So, I'm working on an emulation environment for the Cirrus Logic EP93xx > processors with the Maverick Crunch(tm) FPUs. > > What files do I need to touch to add support for these instructions? At minimum target-arm/op.c, target-arm/translate.c, and target-arm/cpu.h. Note that that FPA is implemented differently. I uses the same emulator as the linux kernel, hooked up to the undefined instruction interrupt. I wouldn't advise doing this as performance is really awful. It's approximately 2x slower than target soft-float, and I guess about 20x slower than a native implementation. Paul