From owner-freebsd-arm@freebsd.org  Thu Oct 19 00:04:52 2017
Return-Path: <owner-freebsd-arm@freebsd.org>
Delivered-To: freebsd-arm@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 A3CDAE476BB
 for <freebsd-arm@mailman.ysv.freebsd.org>;
 Thu, 19 Oct 2017 00:04:52 +0000 (UTC)
 (envelope-from jbeich@freebsd.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
 [IPv6:2610:1c1:1:6074::16:84])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "freefall.freebsd.org",
 Issuer "Let's Encrypt Authority X3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 88E3D6F76B
 for <freebsd-arm@freebsd.org>; Thu, 19 Oct 2017 00:04:52 +0000 (UTC)
 (envelope-from jbeich@freebsd.org)
Received: by freefall.freebsd.org (Postfix, from userid 1354)
 id C68078ECB; Thu, 19 Oct 2017 00:04:51 +0000 (UTC)
From: Jan Beich <jbeich@FreeBSD.org>
To: freebsd-arm@freebsd.org
Subject: AT_HWCAP support on aarch64
Date: Thu, 19 Oct 2017 02:04:46 +0200
Message-ID: <mv4o-ovdt-wny@FreeBSD.org>
MIME-Version: 1.0
Content-Type: text/plain
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 19 Oct 2017 00:04:52 -0000

armv6 and armv7 recently gained support to check NEON or VFP* at runtime.
However, some ports want to take advantage of AES, CRC32, SHA1, SHA256
acceleration on aarch64 as well.

Do you plan to support any HWCAP_* for AT_HWCAP on aarch64?

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223016
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223019 (ditto Chromium)
http://elixir.free-electrons.com/linux/latest/source/arch/arm64/include/uapi/asm/hwcap.h