Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752077AbbKVN3v (ORCPT ); Sun, 22 Nov 2015 08:29:51 -0500 Received: from mail-vk0-f42.google.com ([209.85.213.42]:35209 "EHLO mail-vk0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751474AbbKVN3t (ORCPT ); Sun, 22 Nov 2015 08:29:49 -0500 MIME-Version: 1.0 In-Reply-To: <12750898.0A5czJmNqv@wuerfel> References: <1448068997-26631-1-git-send-email-sboyd@codeaurora.org> <4519802.lamVCN5F0B@wuerfel> <12750898.0A5czJmNqv@wuerfel> From: Peter Maydell Date: Sun, 22 Nov 2015 13:29:29 +0000 Message-ID: Subject: Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions To: Arnd Bergmann Cc: =?UTF-8?B?TcOlbnMgUnVsbGfDpXJk?= , Nicolas Pitre , "linux-arm-msm@vger.kernel.org" , Stephen Boyd , lkml - Kernel Mailing List , Steven Rostedt , arm-mail-list Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 897 Lines: 20 On 21 November 2015 at 23:21, Arnd Bergmann wrote: > Regarding PJ4, it's still unclear whether that has the same > problem and it only reports idivt when it actually supports idiva, > or whether the lack of idiva support on PJ4 is instead the reason > why the ARM ARM was updated to have separate flags. SDIV/IDIV were originally introduced for R and M profile only and there the Thumb encodings of SDIV/IDIV are mandatory whereas the ARM ones are optional (and weren't initially defined at all). So if you're looking for CPUs with only the Thumb encodings I would try checking older R profile cores like the Cortex-R4. thanks -- PMM -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/