From owner-freebsd-toolchain@freebsd.org Thu Mar 24 04:33:09 2016 Return-Path: Delivered-To: freebsd-toolchain@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 65773AD6F5A for ; Thu, 24 Mar 2016 04:33:09 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-ig0-x234.google.com (mail-ig0-x234.google.com [IPv6:2607:f8b0:4001:c05::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2EDBE1986 for ; Thu, 24 Mar 2016 04:33:09 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-ig0-x234.google.com with SMTP id cl4so67095069igb.0 for ; Wed, 23 Mar 2016 21:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc; bh=/nVJFPBeyVKbFkh/LvXqAoklhxx4zWoa6iT55mKYPTg=; b=qDBeetlVGPGL1mD/xJt3hsw9EX95MFIyI2CKlUr9ebf5UPpAgIGvdm+jpxpF1D6Xul NckYt5BpzL7F9rSLy22nbsz0PslIzBlN9W+zhfVuHV63A4Wpi7ROzw+Z19DZAgFNclwH SKKJqbW/KCJcsf4Egsu89rzUTgUrndTwfZ7aibQmrve14xODLza29QPXPD1GR60VsIk5 EES6JnzGLkmdYQeWIGFI7n1rYqjnkgugkYiLOShVe+q/pAyJktnjsqfviw0UjJqSREeo XbiARgqFRe7ZhQp+bWe488r7Pb8dZvHHAKwmfuMUB8rTWJmfpuE0n99/R53Rjl6j/cAn huzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:date :message-id:subject:from:to:cc; bh=/nVJFPBeyVKbFkh/LvXqAoklhxx4zWoa6iT55mKYPTg=; b=O0FvuxXtlhnpzKjL2LKL3YKn6moaxHbSlAysBSINh9EbeUyYxx2FsetXJwA7uiBUvA 8OqcLF3ra/BXdQCEA3TeGCeItTbYqQ1G4f++NKDtftEXMCkJzeiEKjRZMTU5l5e8TR7h 4ZpkczdUAFw1R4QKJSB9cdNf6i60T54uWogSXI42amj4+sI9Cj3665c+AHye7mqycI4J eS81r0sayZATPfLxS0wCQNBa0FqrC1rB2LryFJOww/xYZ3tAr2XRdFWCo9y6f4O034aX zlO/+FoqbT4YdfBKHQQoHBRp436YQzGGLA2jOT2pgeB2HpfOdGx78nVDaravSWdyP1nS JrXw== X-Gm-Message-State: AD7BkJIE5v7dFV9mnmrIlB8na4xtC1700YGNAkaw+F41G5PR3rUIfPc87XV5ZKUafogHrnGxYjgD3X+EUsPRTw== MIME-Version: 1.0 X-Received: by 10.50.13.74 with SMTP id f10mr6902500igc.36.1458793988463; Wed, 23 Mar 2016 21:33:08 -0700 (PDT) Sender: wlosh@bsdimp.com Received: by 10.36.65.230 with HTTP; Wed, 23 Mar 2016 21:33:08 -0700 (PDT) X-Originating-IP: [50.253.99.174] Received: by 10.36.65.230 with HTTP; Wed, 23 Mar 2016 21:33:08 -0700 (PDT) In-Reply-To: <87A2F38F-159C-4CFC-B8AA-4177080662EC@dsl-only.net> References: <87A2F38F-159C-4CFC-B8AA-4177080662EC@dsl-only.net> Date: Wed, 23 Mar 2016 22:33:08 -0600 X-Google-Sender-Auth: IDRuBhmbjrRTufN9Qv3mQOGKIzM Message-ID: Subject: Re: CPUTYPE=armv7-a with CPUTYPE=soft (as an example)? From: Warner Losh To: Mark Millard Cc: "freebsd-toolchain@FreeBSD.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Mar 2016 04:33:09 -0000 On Mar 23, 2016 9:57 PM, "Mark Millard" wrote: > > Between: > > > Q: But what if I need to build a system with soft float ABI under 11? > > > > You can still do that. CPUTYPE=soft has been created for this scenario, as well as to generate libraries for WITH_LIBSOFT. It's anticipated that this will live for the entire FreeBSD 11 branch, but go away in FreeBSD 12. > > and: > > > share/mk/bsd.cpu.mk : > > > > . elif ${MACHINE_CPUARCH} == "arm" > > . if ${CPUTYPE} == "xscale" > > #XXX: gcc doesn't seem to like -mcpu=xscale, and dies while rebuilding itself > > #_CPUCFLAGS = -mcpu=xscale > > _CPUCFLAGS = -march=armv5te -D__XSCALE__ > > . elif ${CPUTYPE} == "armv6" > > _CPUCFLAGS = -march=${CPUTYPE} -DARM_ARCH_6=1 > > . elif ${CPUTYPE} == "cortexa" > > _CPUCFLAGS = -march=armv7 -DARM_ARCH_6=1 -mfpu=vfp > > . elif ${CPUTYPE:Marmv[4567]*} != "" > > # Handle all the armvX types that FreeBSD runs: > > # armv4, armv4t, armv5, armv5te, armv6, armv6t2, armv7, armv7-a, armv7ve > > # they require -march=. All the others require -mcpu=. > > _CPUCFLAGS = -march=${CPUTYPE} > > . else > > # Common values for FreeBSD > > # arm: > > # arm920t, arm926ej-s, marvell-pj4, fa526, fa626, > > # fa606te, fa626te, fa726te > > # armv6: > > # arm1176jzf-s, generic-armv7-a, cortex-a5, cortex-a7, cortex-a8, > > # cortex-a9, cortex-a12, cortex-a15, cortex-a17, cortex-a53, cortex-a57, > > # cortex-a72, exynos-m1 > > _CPUCFLAGS = -mcpu=${CPUTYPE} > > . endif > > how will one do a armv7-a (CPUTYPE=armv7-a) soft-float ABI (CPUTYPE=soft) system build if one cares to? (armv7-a is just a specific example of the general issue. But someone might target a RPI2B with armv7-a specified and also wanting the soft float ABI for some reason.) > > (The question is generic for me for now, I'm not out to do so at this point or any time soon, may be never.) Armv7-a-soft is what I planned, but haven't implemented. Today you get it with just armv7-a. Warner