From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6255C04AB3 for ; Wed, 29 May 2019 07:30:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CA33216FD for ; Wed, 29 May 2019 07:30:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559115028; bh=idcoNhswcdLziM3xTokWYHChkxYAvGbUzmPctbxiVI8=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=mxsfV3u+4Pa2xD/XVPYSRee9iswH1dnyRsW8O3EjklBpIMDAQnaj8M2lLrmn+hZ/f o3ce2aEBANJF0r3fjoYPKyXyiuMZkJFvb9E6qTeEkvQTh6v5a9qEhd7bhLxDw32HCo voSfdOzaEfMEdF5ZUkfqYysroUZlkRwpsnembHME= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726544AbfE2Ha2 (ORCPT ); Wed, 29 May 2019 03:30:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:55024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726080AbfE2Ha2 (ORCPT ); Wed, 29 May 2019 03:30:28 -0400 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 68263217D4 for ; Wed, 29 May 2019 07:30:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559115027; bh=idcoNhswcdLziM3xTokWYHChkxYAvGbUzmPctbxiVI8=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=iyGcqf9Hyhfbqs8zkCVZnT8UjAYBB4aFVp2K92Wzi3xmeselXz6nkkEPrn9S7yp0c 4KsBkyniqWIi2E5rYKCakr6qhGQEvn1KqgGneLEz8hglxowOgTJP9QlxB3vEn3STj4 qpgFfY1menIg5G28gChDR0WDigUvZrdOPgsYHZw4= Received: by mail-wr1-f42.google.com with SMTP id l17so875696wrm.10 for ; Wed, 29 May 2019 00:30:27 -0700 (PDT) X-Gm-Message-State: APjAAAWZFVQhoCYvOjJjNuDeHNHOsy+xJBow745cYwMEdtQyNxblZmST h3sh5koKVFHbvKpYsLxtmMOp+iC2i+qH0Ly0Sqw= X-Google-Smtp-Source: APXvYqz+fLOl9ab2YGVnLy2MxQtqTDT5mybKHA+lSp1sp05FOxXCvhKp3VmPjrm4eiBWr1vrp7outaiDs+b5YHKpzq4= X-Received: by 2002:a5d:610e:: with SMTP id v14mr11563062wrt.343.1559115025930; Wed, 29 May 2019 00:30:25 -0700 (PDT) MIME-Version: 1.0 References: <1559114328-23357-1-git-send-email-guoren@kernel.org> <1559114328-23357-4-git-send-email-guoren@kernel.org> <20190529092307.6c78996b@windsurf.home> In-Reply-To: <20190529092307.6c78996b@windsurf.home> From: Guo Ren Date: Wed, 29 May 2019 15:30:14 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH V3 03/10] arch/csky: Add FLOAT_ABI compiler options To: Thomas Petazzoni Cc: Thomas De Schampheleire , arnout@mind.be, linux-csky@vger.kernel.org, buildroot@buildroot.org, Guo Ren Content-Type: text/plain; charset="UTF-8" Sender: linux-csky-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-csky@vger.kernel.org On Wed, May 29, 2019 at 3:23 PM Thomas Petazzoni wrote: > > Hello, > > On Wed, 29 May 2019 15:18:41 +0800 > guoren@kernel.org wrote: > > > From: Guo Ren > > > > This is only for abiv2 and abiv1 don't support FPU. > > > > Signed-off-by: Guo Ren > > What is abiv1 vs. abiv2 ? Also, in your next commit, abiv1 is > apparently used for ck610, but here this BR2_GCC_TARGET_FLOAT_ABI is > defined for all cases, which seems to contradict your commit log. abiv1 contain: ck610 abiv2 contain: ck807 ck810 ck860 Abiv1 is almost the same as mcore and it's ELF_CODE is 39 Abiv2 is C-SKY own ISA and it's ELF_CODE is 252 We don't support FPU in abiv1, because its opcode width is only 16-bits and we don't want to continue developing it. Best Regards Guo Ren